Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2008 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Keith Packard <keithp@keithp.com> |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include <linux/i2c.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 29 | #include <linux/slab.h> |
Paul Gortmaker | 2d1a8a4 | 2011-08-30 18:16:33 -0400 | [diff] [blame] | 30 | #include <linux/export.h> |
Clint Taylor | 01527b3 | 2014-07-07 13:01:46 -0700 | [diff] [blame] | 31 | #include <linux/notifier.h> |
| 32 | #include <linux/reboot.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 33 | #include <drm/drmP.h> |
Matt Roper | c6f95f2 | 2015-01-22 16:50:32 -0800 | [diff] [blame] | 34 | #include <drm/drm_atomic_helper.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 35 | #include <drm/drm_crtc.h> |
| 36 | #include <drm/drm_crtc_helper.h> |
| 37 | #include <drm/drm_edid.h> |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 38 | #include "intel_drv.h" |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 39 | #include <drm/i915_drm.h> |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 40 | #include "i915_drv.h" |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 41 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 42 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
| 43 | |
Chon Ming Lee | 9dd4ffd | 2013-09-04 01:30:37 +0800 | [diff] [blame] | 44 | struct dp_link_dpll { |
| 45 | int link_bw; |
| 46 | struct dpll dpll; |
| 47 | }; |
| 48 | |
| 49 | static const struct dp_link_dpll gen4_dpll[] = { |
| 50 | { DP_LINK_BW_1_62, |
| 51 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, |
| 52 | { DP_LINK_BW_2_7, |
| 53 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } |
| 54 | }; |
| 55 | |
| 56 | static const struct dp_link_dpll pch_dpll[] = { |
| 57 | { DP_LINK_BW_1_62, |
| 58 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, |
| 59 | { DP_LINK_BW_2_7, |
| 60 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } |
| 61 | }; |
| 62 | |
Chon Ming Lee | 65ce4bf | 2013-09-04 01:30:38 +0800 | [diff] [blame] | 63 | static const struct dp_link_dpll vlv_dpll[] = { |
| 64 | { DP_LINK_BW_1_62, |
Chon Ming Lee | 58f6e63 | 2013-09-25 15:47:51 +0800 | [diff] [blame] | 65 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
Chon Ming Lee | 65ce4bf | 2013-09-04 01:30:38 +0800 | [diff] [blame] | 66 | { DP_LINK_BW_2_7, |
| 67 | { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } } |
| 68 | }; |
| 69 | |
Chon Ming Lee | ef9348c | 2014-04-09 13:28:18 +0300 | [diff] [blame] | 70 | /* |
| 71 | * CHV supports eDP 1.4 that have more link rates. |
| 72 | * Below only provides the fixed rate but exclude variable rate. |
| 73 | */ |
| 74 | static const struct dp_link_dpll chv_dpll[] = { |
| 75 | /* |
| 76 | * CHV requires to program fractional division for m2. |
| 77 | * m2 is stored in fixed point format using formula below |
| 78 | * (m2_int << 22) | m2_fraction |
| 79 | */ |
| 80 | { DP_LINK_BW_1_62, /* m2_int = 32, m2_fraction = 1677722 */ |
| 81 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, |
| 82 | { DP_LINK_BW_2_7, /* m2_int = 27, m2_fraction = 0 */ |
| 83 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, |
| 84 | { DP_LINK_BW_5_4, /* m2_int = 27, m2_fraction = 0 */ |
| 85 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } |
| 86 | }; |
| 87 | |
Jesse Barnes | cfcb0fc | 2010-10-07 16:01:06 -0700 | [diff] [blame] | 88 | /** |
| 89 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) |
| 90 | * @intel_dp: DP struct |
| 91 | * |
| 92 | * If a CPU or PCH DP output is attached to an eDP panel, this function |
| 93 | * will return true, and false otherwise. |
| 94 | */ |
| 95 | static bool is_edp(struct intel_dp *intel_dp) |
| 96 | { |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 97 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 98 | |
| 99 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; |
Jesse Barnes | cfcb0fc | 2010-10-07 16:01:06 -0700 | [diff] [blame] | 100 | } |
| 101 | |
Imre Deak | 68b4d82 | 2013-05-08 13:14:06 +0300 | [diff] [blame] | 102 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
Jesse Barnes | cfcb0fc | 2010-10-07 16:01:06 -0700 | [diff] [blame] | 103 | { |
Imre Deak | 68b4d82 | 2013-05-08 13:14:06 +0300 | [diff] [blame] | 104 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 105 | |
| 106 | return intel_dig_port->base.base.dev; |
Jesse Barnes | cfcb0fc | 2010-10-07 16:01:06 -0700 | [diff] [blame] | 107 | } |
| 108 | |
Chris Wilson | df0e924 | 2010-09-09 16:20:55 +0100 | [diff] [blame] | 109 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
| 110 | { |
Paulo Zanoni | fa90ece | 2012-10-26 19:05:44 -0200 | [diff] [blame] | 111 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
Chris Wilson | df0e924 | 2010-09-09 16:20:55 +0100 | [diff] [blame] | 112 | } |
| 113 | |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 114 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
Ville Syrjälä | 1e0560e | 2014-08-19 13:24:25 +0300 | [diff] [blame] | 115 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp); |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 116 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
Ville Syrjälä | 093e3f1 | 2014-10-16 21:27:33 +0300 | [diff] [blame] | 117 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp); |
Ville Syrjälä | a8c3344 | 2014-10-16 21:29:59 +0300 | [diff] [blame] | 118 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
| 119 | enum pipe pipe); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 120 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 121 | int |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 122 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 123 | { |
Jesse Barnes | 7183dc2 | 2011-07-07 11:10:58 -0700 | [diff] [blame] | 124 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 125 | struct drm_device *dev = intel_dp->attached_connector->base.dev; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 126 | |
| 127 | switch (max_link_bw) { |
| 128 | case DP_LINK_BW_1_62: |
| 129 | case DP_LINK_BW_2_7: |
| 130 | break; |
Imre Deak | d4eead5 | 2013-07-09 17:05:26 +0300 | [diff] [blame] | 131 | case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */ |
Paulo Zanoni | 9bbfd20 | 2014-04-29 11:00:22 -0300 | [diff] [blame] | 132 | if (((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || |
| 133 | INTEL_INFO(dev)->gen >= 8) && |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 134 | intel_dp->dpcd[DP_DPCD_REV] >= 0x12) |
| 135 | max_link_bw = DP_LINK_BW_5_4; |
| 136 | else |
| 137 | max_link_bw = DP_LINK_BW_2_7; |
Imre Deak | d4eead5 | 2013-07-09 17:05:26 +0300 | [diff] [blame] | 138 | break; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 139 | default: |
Imre Deak | d4eead5 | 2013-07-09 17:05:26 +0300 | [diff] [blame] | 140 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
| 141 | max_link_bw); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 142 | max_link_bw = DP_LINK_BW_1_62; |
| 143 | break; |
| 144 | } |
| 145 | return max_link_bw; |
| 146 | } |
| 147 | |
Paulo Zanoni | eeb6324 | 2014-05-06 14:56:50 +0300 | [diff] [blame] | 148 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
| 149 | { |
| 150 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 151 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 152 | u8 source_max, sink_max; |
| 153 | |
| 154 | source_max = 4; |
| 155 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && |
| 156 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) |
| 157 | source_max = 2; |
| 158 | |
| 159 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); |
| 160 | |
| 161 | return min(source_max, sink_max); |
| 162 | } |
| 163 | |
Adam Jackson | cd9dde4 | 2011-10-14 12:43:49 -0400 | [diff] [blame] | 164 | /* |
| 165 | * The units on the numbers in the next two are... bizarre. Examples will |
| 166 | * make it clearer; this one parallels an example in the eDP spec. |
| 167 | * |
| 168 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: |
| 169 | * |
| 170 | * 270000 * 1 * 8 / 10 == 216000 |
| 171 | * |
| 172 | * The actual data capacity of that configuration is 2.16Gbit/s, so the |
| 173 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - |
| 174 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be |
| 175 | * 119000. At 18bpp that's 2142000 kilobits per second. |
| 176 | * |
| 177 | * Thus the strange-looking division by 10 in intel_dp_link_required, to |
| 178 | * get the result in decakilobits instead of kilobits. |
| 179 | */ |
| 180 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 181 | static int |
Keith Packard | c898261 | 2012-01-25 08:16:25 -0800 | [diff] [blame] | 182 | intel_dp_link_required(int pixel_clock, int bpp) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 183 | { |
Adam Jackson | cd9dde4 | 2011-10-14 12:43:49 -0400 | [diff] [blame] | 184 | return (pixel_clock * bpp + 9) / 10; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | static int |
Dave Airlie | fe27d53 | 2010-06-30 11:46:17 +1000 | [diff] [blame] | 188 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) |
| 189 | { |
| 190 | return (max_link_clock * max_lanes * 8) / 10; |
| 191 | } |
| 192 | |
Damien Lespiau | c19de8e | 2013-11-28 15:29:18 +0000 | [diff] [blame] | 193 | static enum drm_mode_status |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 194 | intel_dp_mode_valid(struct drm_connector *connector, |
| 195 | struct drm_display_mode *mode) |
| 196 | { |
Chris Wilson | df0e924 | 2010-09-09 16:20:55 +0100 | [diff] [blame] | 197 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
Jani Nikula | dd06f90 | 2012-10-19 14:51:50 +0300 | [diff] [blame] | 198 | struct intel_connector *intel_connector = to_intel_connector(connector); |
| 199 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 200 | int target_clock = mode->clock; |
| 201 | int max_rate, mode_rate, max_lanes, max_link_clock; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 202 | |
Jani Nikula | dd06f90 | 2012-10-19 14:51:50 +0300 | [diff] [blame] | 203 | if (is_edp(intel_dp) && fixed_mode) { |
| 204 | if (mode->hdisplay > fixed_mode->hdisplay) |
Zhao Yakui | 7de56f4 | 2010-07-19 09:43:14 +0100 | [diff] [blame] | 205 | return MODE_PANEL; |
| 206 | |
Jani Nikula | dd06f90 | 2012-10-19 14:51:50 +0300 | [diff] [blame] | 207 | if (mode->vdisplay > fixed_mode->vdisplay) |
Zhao Yakui | 7de56f4 | 2010-07-19 09:43:14 +0100 | [diff] [blame] | 208 | return MODE_PANEL; |
Daniel Vetter | 03afc4a | 2013-04-02 23:42:31 +0200 | [diff] [blame] | 209 | |
| 210 | target_clock = fixed_mode->clock; |
Zhao Yakui | 7de56f4 | 2010-07-19 09:43:14 +0100 | [diff] [blame] | 211 | } |
| 212 | |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 213 | max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp)); |
Paulo Zanoni | eeb6324 | 2014-05-06 14:56:50 +0300 | [diff] [blame] | 214 | max_lanes = intel_dp_max_lane_count(intel_dp); |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 215 | |
| 216 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); |
| 217 | mode_rate = intel_dp_link_required(target_clock, 18); |
| 218 | |
| 219 | if (mode_rate > max_rate) |
Daniel Vetter | c486793 | 2012-04-10 10:42:36 +0200 | [diff] [blame] | 220 | return MODE_CLOCK_HIGH; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 221 | |
| 222 | if (mode->clock < 10000) |
| 223 | return MODE_CLOCK_LOW; |
| 224 | |
Daniel Vetter | 0af78a2 | 2012-05-23 11:30:55 +0200 | [diff] [blame] | 225 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
| 226 | return MODE_H_ILLEGAL; |
| 227 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 228 | return MODE_OK; |
| 229 | } |
| 230 | |
Rodrigo Vivi | a4f1289 | 2014-11-14 08:52:27 -0800 | [diff] [blame] | 231 | uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 232 | { |
| 233 | int i; |
| 234 | uint32_t v = 0; |
| 235 | |
| 236 | if (src_bytes > 4) |
| 237 | src_bytes = 4; |
| 238 | for (i = 0; i < src_bytes; i++) |
| 239 | v |= ((uint32_t) src[i]) << ((3-i) * 8); |
| 240 | return v; |
| 241 | } |
| 242 | |
Damien Lespiau | c2af70e | 2015-02-10 19:32:23 +0000 | [diff] [blame] | 243 | static void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 244 | { |
| 245 | int i; |
| 246 | if (dst_bytes > 4) |
| 247 | dst_bytes = 4; |
| 248 | for (i = 0; i < dst_bytes; i++) |
| 249 | dst[i] = src >> ((3-i) * 8); |
| 250 | } |
| 251 | |
Keith Packard | fb0f8fb | 2009-06-11 22:31:31 -0700 | [diff] [blame] | 252 | /* hrawclock is 1/4 the FSB frequency */ |
| 253 | static int |
| 254 | intel_hrawclk(struct drm_device *dev) |
| 255 | { |
| 256 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 257 | uint32_t clkcfg; |
| 258 | |
Vijay Purushothaman | 9473c8f | 2012-09-27 19:13:01 +0530 | [diff] [blame] | 259 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
| 260 | if (IS_VALLEYVIEW(dev)) |
| 261 | return 200; |
| 262 | |
Keith Packard | fb0f8fb | 2009-06-11 22:31:31 -0700 | [diff] [blame] | 263 | clkcfg = I915_READ(CLKCFG); |
| 264 | switch (clkcfg & CLKCFG_FSB_MASK) { |
| 265 | case CLKCFG_FSB_400: |
| 266 | return 100; |
| 267 | case CLKCFG_FSB_533: |
| 268 | return 133; |
| 269 | case CLKCFG_FSB_667: |
| 270 | return 166; |
| 271 | case CLKCFG_FSB_800: |
| 272 | return 200; |
| 273 | case CLKCFG_FSB_1067: |
| 274 | return 266; |
| 275 | case CLKCFG_FSB_1333: |
| 276 | return 333; |
| 277 | /* these two are just a guess; one of them might be right */ |
| 278 | case CLKCFG_FSB_1600: |
| 279 | case CLKCFG_FSB_1600_ALT: |
| 280 | return 400; |
| 281 | default: |
| 282 | return 133; |
| 283 | } |
| 284 | } |
| 285 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 286 | static void |
| 287 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 288 | struct intel_dp *intel_dp); |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 289 | static void |
| 290 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 291 | struct intel_dp *intel_dp); |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 292 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 293 | static void pps_lock(struct intel_dp *intel_dp) |
| 294 | { |
| 295 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 296 | struct intel_encoder *encoder = &intel_dig_port->base; |
| 297 | struct drm_device *dev = encoder->base.dev; |
| 298 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 299 | enum intel_display_power_domain power_domain; |
| 300 | |
| 301 | /* |
| 302 | * See vlv_power_sequencer_reset() why we need |
| 303 | * a power domain reference here. |
| 304 | */ |
| 305 | power_domain = intel_display_port_power_domain(encoder); |
| 306 | intel_display_power_get(dev_priv, power_domain); |
| 307 | |
| 308 | mutex_lock(&dev_priv->pps_mutex); |
| 309 | } |
| 310 | |
| 311 | static void pps_unlock(struct intel_dp *intel_dp) |
| 312 | { |
| 313 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 314 | struct intel_encoder *encoder = &intel_dig_port->base; |
| 315 | struct drm_device *dev = encoder->base.dev; |
| 316 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 317 | enum intel_display_power_domain power_domain; |
| 318 | |
| 319 | mutex_unlock(&dev_priv->pps_mutex); |
| 320 | |
| 321 | power_domain = intel_display_port_power_domain(encoder); |
| 322 | intel_display_power_put(dev_priv, power_domain); |
| 323 | } |
| 324 | |
Ville Syrjälä | 961a0db | 2014-10-16 21:29:42 +0300 | [diff] [blame] | 325 | static void |
| 326 | vlv_power_sequencer_kick(struct intel_dp *intel_dp) |
| 327 | { |
| 328 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 329 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 330 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 331 | enum pipe pipe = intel_dp->pps_pipe; |
Ville Syrjälä | d288f65 | 2014-10-28 13:20:22 +0200 | [diff] [blame] | 332 | bool pll_enabled; |
Ville Syrjälä | 961a0db | 2014-10-16 21:29:42 +0300 | [diff] [blame] | 333 | uint32_t DP; |
| 334 | |
| 335 | if (WARN(I915_READ(intel_dp->output_reg) & DP_PORT_EN, |
| 336 | "skipping pipe %c power seqeuncer kick due to port %c being active\n", |
| 337 | pipe_name(pipe), port_name(intel_dig_port->port))) |
| 338 | return; |
| 339 | |
| 340 | DRM_DEBUG_KMS("kicking pipe %c power sequencer for port %c\n", |
| 341 | pipe_name(pipe), port_name(intel_dig_port->port)); |
| 342 | |
| 343 | /* Preserve the BIOS-computed detected bit. This is |
| 344 | * supposed to be read-only. |
| 345 | */ |
| 346 | DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; |
| 347 | DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
| 348 | DP |= DP_PORT_WIDTH(1); |
| 349 | DP |= DP_LINK_TRAIN_PAT_1; |
| 350 | |
| 351 | if (IS_CHERRYVIEW(dev)) |
| 352 | DP |= DP_PIPE_SELECT_CHV(pipe); |
| 353 | else if (pipe == PIPE_B) |
| 354 | DP |= DP_PIPEB_SELECT; |
| 355 | |
Ville Syrjälä | d288f65 | 2014-10-28 13:20:22 +0200 | [diff] [blame] | 356 | pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE; |
| 357 | |
| 358 | /* |
| 359 | * The DPLL for the pipe must be enabled for this to work. |
| 360 | * So enable temporarily it if it's not already enabled. |
| 361 | */ |
| 362 | if (!pll_enabled) |
| 363 | vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev) ? |
| 364 | &chv_dpll[0].dpll : &vlv_dpll[0].dpll); |
| 365 | |
Ville Syrjälä | 961a0db | 2014-10-16 21:29:42 +0300 | [diff] [blame] | 366 | /* |
| 367 | * Similar magic as in intel_dp_enable_port(). |
| 368 | * We _must_ do this port enable + disable trick |
| 369 | * to make this power seqeuencer lock onto the port. |
| 370 | * Otherwise even VDD force bit won't work. |
| 371 | */ |
| 372 | I915_WRITE(intel_dp->output_reg, DP); |
| 373 | POSTING_READ(intel_dp->output_reg); |
| 374 | |
| 375 | I915_WRITE(intel_dp->output_reg, DP | DP_PORT_EN); |
| 376 | POSTING_READ(intel_dp->output_reg); |
| 377 | |
| 378 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
| 379 | POSTING_READ(intel_dp->output_reg); |
Ville Syrjälä | d288f65 | 2014-10-28 13:20:22 +0200 | [diff] [blame] | 380 | |
| 381 | if (!pll_enabled) |
| 382 | vlv_force_pll_off(dev, pipe); |
Ville Syrjälä | 961a0db | 2014-10-16 21:29:42 +0300 | [diff] [blame] | 383 | } |
| 384 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 385 | static enum pipe |
| 386 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) |
| 387 | { |
| 388 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 389 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 390 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 391 | struct intel_encoder *encoder; |
| 392 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); |
Ville Syrjälä | a8c3344 | 2014-10-16 21:29:59 +0300 | [diff] [blame] | 393 | enum pipe pipe; |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 394 | |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 395 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 396 | |
Ville Syrjälä | a8c3344 | 2014-10-16 21:29:59 +0300 | [diff] [blame] | 397 | /* We should never land here with regular DP ports */ |
| 398 | WARN_ON(!is_edp(intel_dp)); |
| 399 | |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 400 | if (intel_dp->pps_pipe != INVALID_PIPE) |
| 401 | return intel_dp->pps_pipe; |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 402 | |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 403 | /* |
| 404 | * We don't have power sequencer currently. |
| 405 | * Pick one that's not used by other ports. |
| 406 | */ |
| 407 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
| 408 | base.head) { |
| 409 | struct intel_dp *tmp; |
| 410 | |
| 411 | if (encoder->type != INTEL_OUTPUT_EDP) |
| 412 | continue; |
| 413 | |
| 414 | tmp = enc_to_intel_dp(&encoder->base); |
| 415 | |
| 416 | if (tmp->pps_pipe != INVALID_PIPE) |
| 417 | pipes &= ~(1 << tmp->pps_pipe); |
| 418 | } |
| 419 | |
| 420 | /* |
| 421 | * Didn't find one. This should not happen since there |
| 422 | * are two power sequencers and up to two eDP ports. |
| 423 | */ |
| 424 | if (WARN_ON(pipes == 0)) |
Ville Syrjälä | a8c3344 | 2014-10-16 21:29:59 +0300 | [diff] [blame] | 425 | pipe = PIPE_A; |
| 426 | else |
| 427 | pipe = ffs(pipes) - 1; |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 428 | |
Ville Syrjälä | a8c3344 | 2014-10-16 21:29:59 +0300 | [diff] [blame] | 429 | vlv_steal_power_sequencer(dev, pipe); |
| 430 | intel_dp->pps_pipe = pipe; |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 431 | |
| 432 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", |
| 433 | pipe_name(intel_dp->pps_pipe), |
| 434 | port_name(intel_dig_port->port)); |
| 435 | |
| 436 | /* init power sequencer on this pipe and port */ |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 437 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
| 438 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 439 | |
Ville Syrjälä | 961a0db | 2014-10-16 21:29:42 +0300 | [diff] [blame] | 440 | /* |
| 441 | * Even vdd force doesn't work until we've made |
| 442 | * the power sequencer lock in on the port. |
| 443 | */ |
| 444 | vlv_power_sequencer_kick(intel_dp); |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 445 | |
| 446 | return intel_dp->pps_pipe; |
| 447 | } |
| 448 | |
Ville Syrjälä | 6491ab2 | 2014-08-18 22:16:06 +0300 | [diff] [blame] | 449 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
| 450 | enum pipe pipe); |
| 451 | |
| 452 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, |
| 453 | enum pipe pipe) |
| 454 | { |
| 455 | return I915_READ(VLV_PIPE_PP_STATUS(pipe)) & PP_ON; |
| 456 | } |
| 457 | |
| 458 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, |
| 459 | enum pipe pipe) |
| 460 | { |
| 461 | return I915_READ(VLV_PIPE_PP_CONTROL(pipe)) & EDP_FORCE_VDD; |
| 462 | } |
| 463 | |
| 464 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, |
| 465 | enum pipe pipe) |
| 466 | { |
| 467 | return true; |
| 468 | } |
| 469 | |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 470 | static enum pipe |
Ville Syrjälä | 6491ab2 | 2014-08-18 22:16:06 +0300 | [diff] [blame] | 471 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
| 472 | enum port port, |
| 473 | vlv_pipe_check pipe_check) |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 474 | { |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 475 | enum pipe pipe; |
| 476 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 477 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
| 478 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & |
| 479 | PANEL_PORT_SELECT_MASK; |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 480 | |
| 481 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) |
| 482 | continue; |
| 483 | |
Ville Syrjälä | 6491ab2 | 2014-08-18 22:16:06 +0300 | [diff] [blame] | 484 | if (!pipe_check(dev_priv, pipe)) |
| 485 | continue; |
| 486 | |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 487 | return pipe; |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 488 | } |
| 489 | |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 490 | return INVALID_PIPE; |
| 491 | } |
| 492 | |
| 493 | static void |
| 494 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) |
| 495 | { |
| 496 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 497 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 498 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 499 | enum port port = intel_dig_port->port; |
| 500 | |
| 501 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 502 | |
| 503 | /* try to find a pipe with this port selected */ |
Ville Syrjälä | 6491ab2 | 2014-08-18 22:16:06 +0300 | [diff] [blame] | 504 | /* first pick one where the panel is on */ |
| 505 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, |
| 506 | vlv_pipe_has_pp_on); |
| 507 | /* didn't find one? pick one where vdd is on */ |
| 508 | if (intel_dp->pps_pipe == INVALID_PIPE) |
| 509 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, |
| 510 | vlv_pipe_has_vdd_on); |
| 511 | /* didn't find one? pick one with just the correct port */ |
| 512 | if (intel_dp->pps_pipe == INVALID_PIPE) |
| 513 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, |
| 514 | vlv_pipe_any); |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 515 | |
| 516 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ |
| 517 | if (intel_dp->pps_pipe == INVALID_PIPE) { |
| 518 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", |
| 519 | port_name(port)); |
| 520 | return; |
| 521 | } |
| 522 | |
| 523 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
| 524 | port_name(port), pipe_name(intel_dp->pps_pipe)); |
| 525 | |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 526 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
| 527 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 528 | } |
| 529 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 530 | void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv) |
| 531 | { |
| 532 | struct drm_device *dev = dev_priv->dev; |
| 533 | struct intel_encoder *encoder; |
| 534 | |
| 535 | if (WARN_ON(!IS_VALLEYVIEW(dev))) |
| 536 | return; |
| 537 | |
| 538 | /* |
| 539 | * We can't grab pps_mutex here due to deadlock with power_domain |
| 540 | * mutex when power_domain functions are called while holding pps_mutex. |
| 541 | * That also means that in order to use pps_pipe the code needs to |
| 542 | * hold both a power domain reference and pps_mutex, and the power domain |
| 543 | * reference get/put must be done while _not_ holding pps_mutex. |
| 544 | * pps_{lock,unlock}() do these steps in the correct order, so one |
| 545 | * should use them always. |
| 546 | */ |
| 547 | |
| 548 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) { |
| 549 | struct intel_dp *intel_dp; |
| 550 | |
| 551 | if (encoder->type != INTEL_OUTPUT_EDP) |
| 552 | continue; |
| 553 | |
| 554 | intel_dp = enc_to_intel_dp(&encoder->base); |
| 555 | intel_dp->pps_pipe = INVALID_PIPE; |
| 556 | } |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 557 | } |
| 558 | |
| 559 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) |
| 560 | { |
| 561 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 562 | |
| 563 | if (HAS_PCH_SPLIT(dev)) |
| 564 | return PCH_PP_CONTROL; |
| 565 | else |
| 566 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); |
| 567 | } |
| 568 | |
| 569 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) |
| 570 | { |
| 571 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 572 | |
| 573 | if (HAS_PCH_SPLIT(dev)) |
| 574 | return PCH_PP_STATUS; |
| 575 | else |
| 576 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); |
| 577 | } |
| 578 | |
Clint Taylor | 01527b3 | 2014-07-07 13:01:46 -0700 | [diff] [blame] | 579 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
| 580 | This function only applicable when panel PM state is not to be tracked */ |
| 581 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, |
| 582 | void *unused) |
| 583 | { |
| 584 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), |
| 585 | edp_notifier); |
| 586 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 587 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 588 | u32 pp_div; |
| 589 | u32 pp_ctrl_reg, pp_div_reg; |
Clint Taylor | 01527b3 | 2014-07-07 13:01:46 -0700 | [diff] [blame] | 590 | |
| 591 | if (!is_edp(intel_dp) || code != SYS_RESTART) |
| 592 | return 0; |
| 593 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 594 | pps_lock(intel_dp); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 595 | |
Clint Taylor | 01527b3 | 2014-07-07 13:01:46 -0700 | [diff] [blame] | 596 | if (IS_VALLEYVIEW(dev)) { |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 597 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
| 598 | |
Clint Taylor | 01527b3 | 2014-07-07 13:01:46 -0700 | [diff] [blame] | 599 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
| 600 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); |
| 601 | pp_div = I915_READ(pp_div_reg); |
| 602 | pp_div &= PP_REFERENCE_DIVIDER_MASK; |
| 603 | |
| 604 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ |
| 605 | I915_WRITE(pp_div_reg, pp_div | 0x1F); |
| 606 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); |
| 607 | msleep(intel_dp->panel_power_cycle_delay); |
| 608 | } |
| 609 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 610 | pps_unlock(intel_dp); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 611 | |
Clint Taylor | 01527b3 | 2014-07-07 13:01:46 -0700 | [diff] [blame] | 612 | return 0; |
| 613 | } |
| 614 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 615 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
Keith Packard | ebf33b1 | 2011-09-29 15:53:27 -0700 | [diff] [blame] | 616 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 617 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Keith Packard | ebf33b1 | 2011-09-29 15:53:27 -0700 | [diff] [blame] | 618 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 619 | |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 620 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 621 | |
Ville Syrjälä | 9a42356 | 2014-10-16 21:29:48 +0300 | [diff] [blame] | 622 | if (IS_VALLEYVIEW(dev) && |
| 623 | intel_dp->pps_pipe == INVALID_PIPE) |
| 624 | return false; |
| 625 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 626 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
Keith Packard | ebf33b1 | 2011-09-29 15:53:27 -0700 | [diff] [blame] | 627 | } |
| 628 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 629 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
Keith Packard | ebf33b1 | 2011-09-29 15:53:27 -0700 | [diff] [blame] | 630 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 631 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Keith Packard | ebf33b1 | 2011-09-29 15:53:27 -0700 | [diff] [blame] | 632 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 633 | |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 634 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 635 | |
Ville Syrjälä | 9a42356 | 2014-10-16 21:29:48 +0300 | [diff] [blame] | 636 | if (IS_VALLEYVIEW(dev) && |
| 637 | intel_dp->pps_pipe == INVALID_PIPE) |
| 638 | return false; |
| 639 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 640 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
Keith Packard | ebf33b1 | 2011-09-29 15:53:27 -0700 | [diff] [blame] | 641 | } |
| 642 | |
Keith Packard | 9b984da | 2011-09-19 13:54:47 -0700 | [diff] [blame] | 643 | static void |
| 644 | intel_dp_check_edp(struct intel_dp *intel_dp) |
| 645 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 646 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Keith Packard | 9b984da | 2011-09-19 13:54:47 -0700 | [diff] [blame] | 647 | struct drm_i915_private *dev_priv = dev->dev_private; |
Keith Packard | ebf33b1 | 2011-09-29 15:53:27 -0700 | [diff] [blame] | 648 | |
Keith Packard | 9b984da | 2011-09-19 13:54:47 -0700 | [diff] [blame] | 649 | if (!is_edp(intel_dp)) |
| 650 | return; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 651 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 652 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
Keith Packard | 9b984da | 2011-09-19 13:54:47 -0700 | [diff] [blame] | 653 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
| 654 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 655 | I915_READ(_pp_stat_reg(intel_dp)), |
| 656 | I915_READ(_pp_ctrl_reg(intel_dp))); |
Keith Packard | 9b984da | 2011-09-19 13:54:47 -0700 | [diff] [blame] | 657 | } |
| 658 | } |
| 659 | |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 660 | static uint32_t |
| 661 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) |
| 662 | { |
| 663 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 664 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 665 | struct drm_i915_private *dev_priv = dev->dev_private; |
Paulo Zanoni | 9ed35ab | 2013-02-18 19:00:25 -0300 | [diff] [blame] | 666 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 667 | uint32_t status; |
| 668 | bool done; |
| 669 | |
Daniel Vetter | ef04f00 | 2012-12-01 21:03:59 +0100 | [diff] [blame] | 670 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 671 | if (has_aux_irq) |
Paulo Zanoni | b18ac46 | 2013-02-18 19:00:24 -0300 | [diff] [blame] | 672 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
Imre Deak | 3598706 | 2013-05-21 20:03:20 +0300 | [diff] [blame] | 673 | msecs_to_jiffies_timeout(10)); |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 674 | else |
| 675 | done = wait_for_atomic(C, 10) == 0; |
| 676 | if (!done) |
| 677 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", |
| 678 | has_aux_irq); |
| 679 | #undef C |
| 680 | |
| 681 | return status; |
| 682 | } |
| 683 | |
Damien Lespiau | ec5b01d | 2014-01-21 13:35:39 +0000 | [diff] [blame] | 684 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
| 685 | { |
| 686 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 687 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 688 | |
| 689 | /* |
| 690 | * The clock divider is based off the hrawclk, and would like to run at |
| 691 | * 2MHz. So, take the hrawclk value and divide by 2 and use that |
| 692 | */ |
| 693 | return index ? 0 : intel_hrawclk(dev) / 2; |
| 694 | } |
| 695 | |
| 696 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
| 697 | { |
| 698 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 699 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 700 | |
| 701 | if (index) |
| 702 | return 0; |
| 703 | |
| 704 | if (intel_dig_port->port == PORT_A) { |
| 705 | if (IS_GEN6(dev) || IS_GEN7(dev)) |
| 706 | return 200; /* SNB & IVB eDP input clock at 400Mhz */ |
| 707 | else |
| 708 | return 225; /* eDP input clock at 450Mhz */ |
| 709 | } else { |
| 710 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
| 711 | } |
| 712 | } |
| 713 | |
| 714 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
Rodrigo Vivi | b84a1cf | 2013-07-11 18:44:57 -0300 | [diff] [blame] | 715 | { |
| 716 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 717 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 718 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 719 | |
Damien Lespiau | ec5b01d | 2014-01-21 13:35:39 +0000 | [diff] [blame] | 720 | if (intel_dig_port->port == PORT_A) { |
Chris Wilson | bc86625 | 2013-07-21 16:00:03 +0100 | [diff] [blame] | 721 | if (index) |
| 722 | return 0; |
Damien Lespiau | ec5b01d | 2014-01-21 13:35:39 +0000 | [diff] [blame] | 723 | return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000); |
Rodrigo Vivi | b84a1cf | 2013-07-11 18:44:57 -0300 | [diff] [blame] | 724 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
| 725 | /* Workaround for non-ULT HSW */ |
Chris Wilson | bc86625 | 2013-07-21 16:00:03 +0100 | [diff] [blame] | 726 | switch (index) { |
| 727 | case 0: return 63; |
| 728 | case 1: return 72; |
| 729 | default: return 0; |
| 730 | } |
Damien Lespiau | ec5b01d | 2014-01-21 13:35:39 +0000 | [diff] [blame] | 731 | } else { |
Chris Wilson | bc86625 | 2013-07-21 16:00:03 +0100 | [diff] [blame] | 732 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
Rodrigo Vivi | b84a1cf | 2013-07-11 18:44:57 -0300 | [diff] [blame] | 733 | } |
| 734 | } |
| 735 | |
Damien Lespiau | ec5b01d | 2014-01-21 13:35:39 +0000 | [diff] [blame] | 736 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
| 737 | { |
| 738 | return index ? 0 : 100; |
| 739 | } |
| 740 | |
Damien Lespiau | b6b5e38 | 2014-01-20 16:00:59 +0000 | [diff] [blame] | 741 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
| 742 | { |
| 743 | /* |
| 744 | * SKL doesn't need us to program the AUX clock divider (Hardware will |
| 745 | * derive the clock from CDCLK automatically). We still implement the |
| 746 | * get_aux_clock_divider vfunc to plug-in into the existing code. |
| 747 | */ |
| 748 | return index ? 0 : 1; |
| 749 | } |
| 750 | |
Damien Lespiau | 5ed12a1 | 2014-01-20 15:52:30 +0000 | [diff] [blame] | 751 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
| 752 | bool has_aux_irq, |
| 753 | int send_bytes, |
| 754 | uint32_t aux_clock_divider) |
| 755 | { |
| 756 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 757 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 758 | uint32_t precharge, timeout; |
| 759 | |
| 760 | if (IS_GEN6(dev)) |
| 761 | precharge = 3; |
| 762 | else |
| 763 | precharge = 5; |
| 764 | |
| 765 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) |
| 766 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; |
| 767 | else |
| 768 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; |
| 769 | |
| 770 | return DP_AUX_CH_CTL_SEND_BUSY | |
Damien Lespiau | 788d443 | 2014-01-20 15:52:31 +0000 | [diff] [blame] | 771 | DP_AUX_CH_CTL_DONE | |
Damien Lespiau | 5ed12a1 | 2014-01-20 15:52:30 +0000 | [diff] [blame] | 772 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
Damien Lespiau | 788d443 | 2014-01-20 15:52:31 +0000 | [diff] [blame] | 773 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
Damien Lespiau | 5ed12a1 | 2014-01-20 15:52:30 +0000 | [diff] [blame] | 774 | timeout | |
Damien Lespiau | 788d443 | 2014-01-20 15:52:31 +0000 | [diff] [blame] | 775 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
Damien Lespiau | 5ed12a1 | 2014-01-20 15:52:30 +0000 | [diff] [blame] | 776 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
| 777 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | |
Damien Lespiau | 788d443 | 2014-01-20 15:52:31 +0000 | [diff] [blame] | 778 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
Damien Lespiau | 5ed12a1 | 2014-01-20 15:52:30 +0000 | [diff] [blame] | 779 | } |
| 780 | |
Damien Lespiau | b9ca5fa | 2014-01-20 16:01:00 +0000 | [diff] [blame] | 781 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
| 782 | bool has_aux_irq, |
| 783 | int send_bytes, |
| 784 | uint32_t unused) |
| 785 | { |
| 786 | return DP_AUX_CH_CTL_SEND_BUSY | |
| 787 | DP_AUX_CH_CTL_DONE | |
| 788 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
| 789 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
| 790 | DP_AUX_CH_CTL_TIME_OUT_1600us | |
| 791 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
| 792 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
| 793 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); |
| 794 | } |
| 795 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 796 | static int |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 797 | intel_dp_aux_ch(struct intel_dp *intel_dp, |
Daniel Vetter | bd9f74a | 2014-10-02 09:45:35 +0200 | [diff] [blame] | 798 | const uint8_t *send, int send_bytes, |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 799 | uint8_t *recv, int recv_size) |
| 800 | { |
Paulo Zanoni | 174edf1 | 2012-10-26 19:05:50 -0200 | [diff] [blame] | 801 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 802 | struct drm_device *dev = intel_dig_port->base.base.dev; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 803 | struct drm_i915_private *dev_priv = dev->dev_private; |
Paulo Zanoni | 9ed35ab | 2013-02-18 19:00:25 -0300 | [diff] [blame] | 804 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 805 | uint32_t ch_data = ch_ctl + 4; |
Chris Wilson | bc86625 | 2013-07-21 16:00:03 +0100 | [diff] [blame] | 806 | uint32_t aux_clock_divider; |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 807 | int i, ret, recv_bytes; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 808 | uint32_t status; |
Damien Lespiau | 5ed12a1 | 2014-01-20 15:52:30 +0000 | [diff] [blame] | 809 | int try, clock = 0; |
Daniel Vetter | 4e6b788 | 2014-02-07 16:33:20 +0100 | [diff] [blame] | 810 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
Jani Nikula | 884f19e | 2014-03-14 16:51:14 +0200 | [diff] [blame] | 811 | bool vdd; |
| 812 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 813 | pps_lock(intel_dp); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 814 | |
Ville Syrjälä | 72c3500 | 2014-08-18 22:16:00 +0300 | [diff] [blame] | 815 | /* |
| 816 | * We will be called with VDD already enabled for dpcd/edid/oui reads. |
| 817 | * In such cases we want to leave VDD enabled and it's up to upper layers |
| 818 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off |
| 819 | * ourselves. |
| 820 | */ |
Ville Syrjälä | 1e0560e | 2014-08-19 13:24:25 +0300 | [diff] [blame] | 821 | vdd = edp_panel_vdd_on(intel_dp); |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 822 | |
| 823 | /* dp aux is extremely sensitive to irq latency, hence request the |
| 824 | * lowest possible wakeup latency and so prevent the cpu from going into |
| 825 | * deep sleep states. |
| 826 | */ |
| 827 | pm_qos_update_request(&dev_priv->pm_qos, 0); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 828 | |
Keith Packard | 9b984da | 2011-09-19 13:54:47 -0700 | [diff] [blame] | 829 | intel_dp_check_edp(intel_dp); |
Zhenyu Wang | 5eb08b6 | 2009-07-24 01:00:31 +0800 | [diff] [blame] | 830 | |
Paulo Zanoni | c67a470 | 2013-08-19 13:18:09 -0300 | [diff] [blame] | 831 | intel_aux_display_runtime_get(dev_priv); |
| 832 | |
Jesse Barnes | 11bee43 | 2011-08-01 15:02:20 -0700 | [diff] [blame] | 833 | /* Try to wait for any previous AUX channel activity */ |
| 834 | for (try = 0; try < 3; try++) { |
Daniel Vetter | ef04f00 | 2012-12-01 21:03:59 +0100 | [diff] [blame] | 835 | status = I915_READ_NOTRACE(ch_ctl); |
Jesse Barnes | 11bee43 | 2011-08-01 15:02:20 -0700 | [diff] [blame] | 836 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
| 837 | break; |
| 838 | msleep(1); |
| 839 | } |
| 840 | |
| 841 | if (try == 3) { |
| 842 | WARN(1, "dp_aux_ch not started status 0x%08x\n", |
| 843 | I915_READ(ch_ctl)); |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 844 | ret = -EBUSY; |
| 845 | goto out; |
Chris Wilson | 4f7f7b7 | 2010-08-18 18:12:56 +0100 | [diff] [blame] | 846 | } |
| 847 | |
Paulo Zanoni | 46a5ae9 | 2013-09-17 11:14:10 -0300 | [diff] [blame] | 848 | /* Only 5 data registers! */ |
| 849 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { |
| 850 | ret = -E2BIG; |
| 851 | goto out; |
| 852 | } |
| 853 | |
Damien Lespiau | ec5b01d | 2014-01-21 13:35:39 +0000 | [diff] [blame] | 854 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
Damien Lespiau | 153b110 | 2014-01-21 13:37:15 +0000 | [diff] [blame] | 855 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
| 856 | has_aux_irq, |
| 857 | send_bytes, |
| 858 | aux_clock_divider); |
Damien Lespiau | 5ed12a1 | 2014-01-20 15:52:30 +0000 | [diff] [blame] | 859 | |
Chris Wilson | bc86625 | 2013-07-21 16:00:03 +0100 | [diff] [blame] | 860 | /* Must try at least 3 times according to DP spec */ |
| 861 | for (try = 0; try < 5; try++) { |
| 862 | /* Load the send data into the aux channel data registers */ |
| 863 | for (i = 0; i < send_bytes; i += 4) |
| 864 | I915_WRITE(ch_data + i, |
Rodrigo Vivi | a4f1289 | 2014-11-14 08:52:27 -0800 | [diff] [blame] | 865 | intel_dp_pack_aux(send + i, |
| 866 | send_bytes - i)); |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 867 | |
Chris Wilson | bc86625 | 2013-07-21 16:00:03 +0100 | [diff] [blame] | 868 | /* Send the command and wait for it to complete */ |
Damien Lespiau | 5ed12a1 | 2014-01-20 15:52:30 +0000 | [diff] [blame] | 869 | I915_WRITE(ch_ctl, send_ctl); |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 870 | |
Chris Wilson | bc86625 | 2013-07-21 16:00:03 +0100 | [diff] [blame] | 871 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 872 | |
Chris Wilson | bc86625 | 2013-07-21 16:00:03 +0100 | [diff] [blame] | 873 | /* Clear done status and any errors */ |
| 874 | I915_WRITE(ch_ctl, |
| 875 | status | |
| 876 | DP_AUX_CH_CTL_DONE | |
| 877 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
| 878 | DP_AUX_CH_CTL_RECEIVE_ERROR); |
Adam Jackson | d7e96fe | 2011-07-26 15:39:46 -0400 | [diff] [blame] | 879 | |
Chris Wilson | bc86625 | 2013-07-21 16:00:03 +0100 | [diff] [blame] | 880 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | |
| 881 | DP_AUX_CH_CTL_RECEIVE_ERROR)) |
| 882 | continue; |
| 883 | if (status & DP_AUX_CH_CTL_DONE) |
| 884 | break; |
| 885 | } |
Chris Wilson | 4f7f7b7 | 2010-08-18 18:12:56 +0100 | [diff] [blame] | 886 | if (status & DP_AUX_CH_CTL_DONE) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 887 | break; |
| 888 | } |
| 889 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 890 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
Keith Packard | 1ae8c0a | 2009-06-28 15:42:17 -0700 | [diff] [blame] | 891 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 892 | ret = -EBUSY; |
| 893 | goto out; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 894 | } |
| 895 | |
| 896 | /* Check for timeout or receive error. |
| 897 | * Timeouts occur when the sink is not connected |
| 898 | */ |
Keith Packard | a5b3da5 | 2009-06-11 22:30:32 -0700 | [diff] [blame] | 899 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
Keith Packard | 1ae8c0a | 2009-06-28 15:42:17 -0700 | [diff] [blame] | 900 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 901 | ret = -EIO; |
| 902 | goto out; |
Keith Packard | a5b3da5 | 2009-06-11 22:30:32 -0700 | [diff] [blame] | 903 | } |
Keith Packard | 1ae8c0a | 2009-06-28 15:42:17 -0700 | [diff] [blame] | 904 | |
| 905 | /* Timeouts occur when the device isn't connected, so they're |
| 906 | * "normal" -- don't fill the kernel log with these */ |
Keith Packard | a5b3da5 | 2009-06-11 22:30:32 -0700 | [diff] [blame] | 907 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
Zhao Yakui | 28c9773 | 2009-10-09 11:39:41 +0800 | [diff] [blame] | 908 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 909 | ret = -ETIMEDOUT; |
| 910 | goto out; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 911 | } |
| 912 | |
| 913 | /* Unload any bytes sent back from the other side */ |
| 914 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> |
| 915 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 916 | if (recv_bytes > recv_size) |
| 917 | recv_bytes = recv_size; |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 918 | |
Chris Wilson | 4f7f7b7 | 2010-08-18 18:12:56 +0100 | [diff] [blame] | 919 | for (i = 0; i < recv_bytes; i += 4) |
Rodrigo Vivi | a4f1289 | 2014-11-14 08:52:27 -0800 | [diff] [blame] | 920 | intel_dp_unpack_aux(I915_READ(ch_data + i), |
| 921 | recv + i, recv_bytes - i); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 922 | |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 923 | ret = recv_bytes; |
| 924 | out: |
| 925 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); |
Paulo Zanoni | c67a470 | 2013-08-19 13:18:09 -0300 | [diff] [blame] | 926 | intel_aux_display_runtime_put(dev_priv); |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 927 | |
Jani Nikula | 884f19e | 2014-03-14 16:51:14 +0200 | [diff] [blame] | 928 | if (vdd) |
| 929 | edp_panel_vdd_off(intel_dp, false); |
| 930 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 931 | pps_unlock(intel_dp); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 932 | |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 933 | return ret; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 934 | } |
| 935 | |
Jani Nikula | a6c8aff0 | 2014-04-07 12:37:25 +0300 | [diff] [blame] | 936 | #define BARE_ADDRESS_SIZE 3 |
| 937 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 938 | static ssize_t |
| 939 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 940 | { |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 941 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
| 942 | uint8_t txbuf[20], rxbuf[20]; |
| 943 | size_t txsize, rxsize; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 944 | int ret; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 945 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 946 | txbuf[0] = msg->request << 4; |
| 947 | txbuf[1] = msg->address >> 8; |
| 948 | txbuf[2] = msg->address & 0xff; |
| 949 | txbuf[3] = msg->size - 1; |
Paulo Zanoni | 46a5ae9 | 2013-09-17 11:14:10 -0300 | [diff] [blame] | 950 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 951 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
| 952 | case DP_AUX_NATIVE_WRITE: |
| 953 | case DP_AUX_I2C_WRITE: |
Jani Nikula | a6c8aff0 | 2014-04-07 12:37:25 +0300 | [diff] [blame] | 954 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 955 | rxsize = 1; |
Jani Nikula | f51a44b | 2014-02-11 11:52:05 +0200 | [diff] [blame] | 956 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 957 | if (WARN_ON(txsize > 20)) |
| 958 | return -E2BIG; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 959 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 960 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 961 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 962 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
| 963 | if (ret > 0) { |
| 964 | msg->reply = rxbuf[0] >> 4; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 965 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 966 | /* Return payload size. */ |
| 967 | ret = msg->size; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 968 | } |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 969 | break; |
| 970 | |
| 971 | case DP_AUX_NATIVE_READ: |
| 972 | case DP_AUX_I2C_READ: |
Jani Nikula | a6c8aff0 | 2014-04-07 12:37:25 +0300 | [diff] [blame] | 973 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 974 | rxsize = msg->size + 1; |
| 975 | |
| 976 | if (WARN_ON(rxsize > 20)) |
| 977 | return -E2BIG; |
| 978 | |
| 979 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
| 980 | if (ret > 0) { |
| 981 | msg->reply = rxbuf[0] >> 4; |
| 982 | /* |
| 983 | * Assume happy day, and copy the data. The caller is |
| 984 | * expected to check msg->reply before touching it. |
| 985 | * |
| 986 | * Return payload size. |
| 987 | */ |
| 988 | ret--; |
| 989 | memcpy(msg->buffer, rxbuf + 1, ret); |
| 990 | } |
| 991 | break; |
| 992 | |
| 993 | default: |
| 994 | ret = -EINVAL; |
| 995 | break; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 996 | } |
Jani Nikula | f51a44b | 2014-02-11 11:52:05 +0200 | [diff] [blame] | 997 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 998 | return ret; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 999 | } |
| 1000 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 1001 | static void |
| 1002 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1003 | { |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 1004 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Jani Nikula | 33ad662 | 2014-03-14 16:51:16 +0200 | [diff] [blame] | 1005 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 1006 | enum port port = intel_dig_port->port; |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 1007 | const char *name = NULL; |
Dave Airlie | ab2c067 | 2009-12-04 10:55:24 +1000 | [diff] [blame] | 1008 | int ret; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1009 | |
Jani Nikula | 33ad662 | 2014-03-14 16:51:16 +0200 | [diff] [blame] | 1010 | switch (port) { |
| 1011 | case PORT_A: |
| 1012 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 1013 | name = "DPDDC-A"; |
Dave Airlie | ab2c067 | 2009-12-04 10:55:24 +1000 | [diff] [blame] | 1014 | break; |
Jani Nikula | 33ad662 | 2014-03-14 16:51:16 +0200 | [diff] [blame] | 1015 | case PORT_B: |
| 1016 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 1017 | name = "DPDDC-B"; |
Jani Nikula | 33ad662 | 2014-03-14 16:51:16 +0200 | [diff] [blame] | 1018 | break; |
| 1019 | case PORT_C: |
| 1020 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 1021 | name = "DPDDC-C"; |
Jani Nikula | 33ad662 | 2014-03-14 16:51:16 +0200 | [diff] [blame] | 1022 | break; |
| 1023 | case PORT_D: |
| 1024 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 1025 | name = "DPDDC-D"; |
Dave Airlie | ab2c067 | 2009-12-04 10:55:24 +1000 | [diff] [blame] | 1026 | break; |
| 1027 | default: |
Jani Nikula | 33ad662 | 2014-03-14 16:51:16 +0200 | [diff] [blame] | 1028 | BUG(); |
Dave Airlie | ab2c067 | 2009-12-04 10:55:24 +1000 | [diff] [blame] | 1029 | } |
| 1030 | |
Damien Lespiau | 1b1aad7 | 2013-12-03 13:56:29 +0000 | [diff] [blame] | 1031 | /* |
| 1032 | * The AUX_CTL register is usually DP_CTL + 0x10. |
| 1033 | * |
| 1034 | * On Haswell and Broadwell though: |
| 1035 | * - Both port A DDI_BUF_CTL and DDI_AUX_CTL are on the CPU |
| 1036 | * - Port B/C/D AUX channels are on the PCH, DDI_BUF_CTL on the CPU |
| 1037 | * |
| 1038 | * Skylake moves AUX_CTL back next to DDI_BUF_CTL, on the CPU. |
| 1039 | */ |
| 1040 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) |
Jani Nikula | 33ad662 | 2014-03-14 16:51:16 +0200 | [diff] [blame] | 1041 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
David Flynn | 8316f33 | 2010-12-08 16:10:21 +0000 | [diff] [blame] | 1042 | |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 1043 | intel_dp->aux.name = name; |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 1044 | intel_dp->aux.dev = dev->dev; |
| 1045 | intel_dp->aux.transfer = intel_dp_aux_transfer; |
David Flynn | 8316f33 | 2010-12-08 16:10:21 +0000 | [diff] [blame] | 1046 | |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 1047 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
| 1048 | connector->base.kdev->kobj.name); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1049 | |
Dave Airlie | 4f71d0c | 2014-06-04 16:02:28 +1000 | [diff] [blame] | 1050 | ret = drm_dp_aux_register(&intel_dp->aux); |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 1051 | if (ret < 0) { |
Dave Airlie | 4f71d0c | 2014-06-04 16:02:28 +1000 | [diff] [blame] | 1052 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 1053 | name, ret); |
| 1054 | return; |
Dave Airlie | ab2c067 | 2009-12-04 10:55:24 +1000 | [diff] [blame] | 1055 | } |
David Flynn | 8316f33 | 2010-12-08 16:10:21 +0000 | [diff] [blame] | 1056 | |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 1057 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
| 1058 | &intel_dp->aux.ddc.dev.kobj, |
| 1059 | intel_dp->aux.ddc.dev.kobj.name); |
| 1060 | if (ret < 0) { |
| 1061 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); |
Dave Airlie | 4f71d0c | 2014-06-04 16:02:28 +1000 | [diff] [blame] | 1062 | drm_dp_aux_unregister(&intel_dp->aux); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1063 | } |
| 1064 | } |
| 1065 | |
Imre Deak | 80f65de | 2014-02-11 17:12:49 +0200 | [diff] [blame] | 1066 | static void |
| 1067 | intel_dp_connector_unregister(struct intel_connector *intel_connector) |
| 1068 | { |
| 1069 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); |
| 1070 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 1071 | if (!intel_connector->mst_port) |
| 1072 | sysfs_remove_link(&intel_connector->base.kdev->kobj, |
| 1073 | intel_dp->aux.ddc.dev.kobj.name); |
Imre Deak | 80f65de | 2014-02-11 17:12:49 +0200 | [diff] [blame] | 1074 | intel_connector_unregister(intel_connector); |
| 1075 | } |
| 1076 | |
Daniel Vetter | c6bb353 | 2013-04-19 11:14:33 +0200 | [diff] [blame] | 1077 | static void |
Ander Conselvan de Oliveira | 5cec258 | 2015-01-15 14:55:21 +0200 | [diff] [blame] | 1078 | skl_edp_set_pll_config(struct intel_crtc_state *pipe_config, int link_bw) |
Damien Lespiau | 5416d87 | 2014-11-14 17:24:33 +0000 | [diff] [blame] | 1079 | { |
| 1080 | u32 ctrl1; |
| 1081 | |
| 1082 | pipe_config->ddi_pll_sel = SKL_DPLL0; |
| 1083 | pipe_config->dpll_hw_state.cfgcr1 = 0; |
| 1084 | pipe_config->dpll_hw_state.cfgcr2 = 0; |
| 1085 | |
| 1086 | ctrl1 = DPLL_CTRL1_OVERRIDE(SKL_DPLL0); |
| 1087 | switch (link_bw) { |
| 1088 | case DP_LINK_BW_1_62: |
| 1089 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_810, |
| 1090 | SKL_DPLL0); |
| 1091 | break; |
| 1092 | case DP_LINK_BW_2_7: |
| 1093 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_1350, |
| 1094 | SKL_DPLL0); |
| 1095 | break; |
| 1096 | case DP_LINK_BW_5_4: |
| 1097 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_2700, |
| 1098 | SKL_DPLL0); |
| 1099 | break; |
| 1100 | } |
| 1101 | pipe_config->dpll_hw_state.ctrl1 = ctrl1; |
| 1102 | } |
| 1103 | |
| 1104 | static void |
Ander Conselvan de Oliveira | 5cec258 | 2015-01-15 14:55:21 +0200 | [diff] [blame] | 1105 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config, int link_bw) |
Daniel Vetter | 0e50338 | 2014-07-04 11:26:04 -0300 | [diff] [blame] | 1106 | { |
| 1107 | switch (link_bw) { |
| 1108 | case DP_LINK_BW_1_62: |
| 1109 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; |
| 1110 | break; |
| 1111 | case DP_LINK_BW_2_7: |
| 1112 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; |
| 1113 | break; |
| 1114 | case DP_LINK_BW_5_4: |
| 1115 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; |
| 1116 | break; |
| 1117 | } |
| 1118 | } |
| 1119 | |
| 1120 | static void |
Daniel Vetter | c6bb353 | 2013-04-19 11:14:33 +0200 | [diff] [blame] | 1121 | intel_dp_set_clock(struct intel_encoder *encoder, |
Ander Conselvan de Oliveira | 5cec258 | 2015-01-15 14:55:21 +0200 | [diff] [blame] | 1122 | struct intel_crtc_state *pipe_config, int link_bw) |
Daniel Vetter | c6bb353 | 2013-04-19 11:14:33 +0200 | [diff] [blame] | 1123 | { |
| 1124 | struct drm_device *dev = encoder->base.dev; |
Chon Ming Lee | 9dd4ffd | 2013-09-04 01:30:37 +0800 | [diff] [blame] | 1125 | const struct dp_link_dpll *divisor = NULL; |
| 1126 | int i, count = 0; |
Daniel Vetter | c6bb353 | 2013-04-19 11:14:33 +0200 | [diff] [blame] | 1127 | |
| 1128 | if (IS_G4X(dev)) { |
Chon Ming Lee | 9dd4ffd | 2013-09-04 01:30:37 +0800 | [diff] [blame] | 1129 | divisor = gen4_dpll; |
| 1130 | count = ARRAY_SIZE(gen4_dpll); |
Daniel Vetter | c6bb353 | 2013-04-19 11:14:33 +0200 | [diff] [blame] | 1131 | } else if (HAS_PCH_SPLIT(dev)) { |
Chon Ming Lee | 9dd4ffd | 2013-09-04 01:30:37 +0800 | [diff] [blame] | 1132 | divisor = pch_dpll; |
| 1133 | count = ARRAY_SIZE(pch_dpll); |
Chon Ming Lee | ef9348c | 2014-04-09 13:28:18 +0300 | [diff] [blame] | 1134 | } else if (IS_CHERRYVIEW(dev)) { |
| 1135 | divisor = chv_dpll; |
| 1136 | count = ARRAY_SIZE(chv_dpll); |
Daniel Vetter | c6bb353 | 2013-04-19 11:14:33 +0200 | [diff] [blame] | 1137 | } else if (IS_VALLEYVIEW(dev)) { |
Chon Ming Lee | 65ce4bf | 2013-09-04 01:30:38 +0800 | [diff] [blame] | 1138 | divisor = vlv_dpll; |
| 1139 | count = ARRAY_SIZE(vlv_dpll); |
Daniel Vetter | c6bb353 | 2013-04-19 11:14:33 +0200 | [diff] [blame] | 1140 | } |
Chon Ming Lee | 9dd4ffd | 2013-09-04 01:30:37 +0800 | [diff] [blame] | 1141 | |
| 1142 | if (divisor && count) { |
| 1143 | for (i = 0; i < count; i++) { |
| 1144 | if (link_bw == divisor[i].link_bw) { |
| 1145 | pipe_config->dpll = divisor[i].dpll; |
| 1146 | pipe_config->clock_set = true; |
| 1147 | break; |
| 1148 | } |
| 1149 | } |
Daniel Vetter | c6bb353 | 2013-04-19 11:14:33 +0200 | [diff] [blame] | 1150 | } |
| 1151 | } |
| 1152 | |
Paulo Zanoni | 00c09d7 | 2012-10-26 19:05:52 -0200 | [diff] [blame] | 1153 | bool |
Daniel Vetter | 5bfe2ac | 2013-03-27 00:44:55 +0100 | [diff] [blame] | 1154 | intel_dp_compute_config(struct intel_encoder *encoder, |
Ander Conselvan de Oliveira | 5cec258 | 2015-01-15 14:55:21 +0200 | [diff] [blame] | 1155 | struct intel_crtc_state *pipe_config) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1156 | { |
Daniel Vetter | 5bfe2ac | 2013-03-27 00:44:55 +0100 | [diff] [blame] | 1157 | struct drm_device *dev = encoder->base.dev; |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 1158 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ander Conselvan de Oliveira | 2d112de | 2015-01-15 14:55:22 +0200 | [diff] [blame] | 1159 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
Daniel Vetter | 5bfe2ac | 2013-03-27 00:44:55 +0100 | [diff] [blame] | 1160 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 1161 | enum port port = dp_to_dig_port(intel_dp)->port; |
Jesse Barnes | 2dd2455 | 2013-04-25 12:55:01 -0700 | [diff] [blame] | 1162 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
Jani Nikula | dd06f90 | 2012-10-19 14:51:50 +0300 | [diff] [blame] | 1163 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1164 | int lane_count, clock; |
Jani Nikula | 56071a2 | 2014-05-06 14:56:52 +0300 | [diff] [blame] | 1165 | int min_lane_count = 1; |
Paulo Zanoni | eeb6324 | 2014-05-06 14:56:50 +0300 | [diff] [blame] | 1166 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 1167 | /* Conveniently, the link BW constants become indices with a shift...*/ |
Jani Nikula | 56071a2 | 2014-05-06 14:56:52 +0300 | [diff] [blame] | 1168 | int min_clock = 0; |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 1169 | int max_clock = intel_dp_max_link_bw(intel_dp) >> 3; |
Daniel Vetter | 083f956 | 2012-04-20 20:23:49 +0200 | [diff] [blame] | 1170 | int bpp, mode_rate; |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 1171 | static int bws[] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7, DP_LINK_BW_5_4 }; |
Daniel Vetter | ff9a675 | 2013-06-01 17:16:21 +0200 | [diff] [blame] | 1172 | int link_avail, link_clock; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1173 | |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 1174 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
Daniel Vetter | 5bfe2ac | 2013-03-27 00:44:55 +0100 | [diff] [blame] | 1175 | pipe_config->has_pch_encoder = true; |
| 1176 | |
Daniel Vetter | 03afc4a | 2013-04-02 23:42:31 +0200 | [diff] [blame] | 1177 | pipe_config->has_dp_encoder = true; |
Vandana Kannan | f769cd2 | 2014-08-05 07:51:22 -0700 | [diff] [blame] | 1178 | pipe_config->has_drrs = false; |
Daniel Vetter | 9ed109a | 2014-04-24 23:54:52 +0200 | [diff] [blame] | 1179 | pipe_config->has_audio = intel_dp->has_audio; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1180 | |
Jani Nikula | dd06f90 | 2012-10-19 14:51:50 +0300 | [diff] [blame] | 1181 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
| 1182 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, |
| 1183 | adjusted_mode); |
Jesse Barnes | 2dd2455 | 2013-04-25 12:55:01 -0700 | [diff] [blame] | 1184 | if (!HAS_PCH_SPLIT(dev)) |
| 1185 | intel_gmch_panel_fitting(intel_crtc, pipe_config, |
| 1186 | intel_connector->panel.fitting_mode); |
| 1187 | else |
Jesse Barnes | b074cec | 2013-04-25 12:55:02 -0700 | [diff] [blame] | 1188 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
| 1189 | intel_connector->panel.fitting_mode); |
Zhao Yakui | 0d3a1be | 2010-07-19 09:43:13 +0100 | [diff] [blame] | 1190 | } |
| 1191 | |
Daniel Vetter | cb1793c | 2012-06-04 18:39:21 +0200 | [diff] [blame] | 1192 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
Daniel Vetter | 0af78a2 | 2012-05-23 11:30:55 +0200 | [diff] [blame] | 1193 | return false; |
| 1194 | |
Daniel Vetter | 083f956 | 2012-04-20 20:23:49 +0200 | [diff] [blame] | 1195 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
| 1196 | "max bw %02x pixel clock %iKHz\n", |
Damien Lespiau | 241bfc3 | 2013-09-25 16:45:37 +0100 | [diff] [blame] | 1197 | max_lane_count, bws[max_clock], |
| 1198 | adjusted_mode->crtc_clock); |
Daniel Vetter | 083f956 | 2012-04-20 20:23:49 +0200 | [diff] [blame] | 1199 | |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 1200 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
| 1201 | * bpc in between. */ |
Daniel Vetter | 3e7ca98 | 2013-06-01 19:45:56 +0200 | [diff] [blame] | 1202 | bpp = pipe_config->pipe_bpp; |
Jani Nikula | 56071a2 | 2014-05-06 14:56:52 +0300 | [diff] [blame] | 1203 | if (is_edp(intel_dp)) { |
| 1204 | if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) { |
| 1205 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", |
| 1206 | dev_priv->vbt.edp_bpp); |
| 1207 | bpp = dev_priv->vbt.edp_bpp; |
| 1208 | } |
| 1209 | |
Jani Nikula | 344c5bb | 2014-09-09 11:25:13 +0300 | [diff] [blame] | 1210 | /* |
| 1211 | * Use the maximum clock and number of lanes the eDP panel |
| 1212 | * advertizes being capable of. The panels are generally |
| 1213 | * designed to support only a single clock and lane |
| 1214 | * configuration, and typically these values correspond to the |
| 1215 | * native resolution of the panel. |
| 1216 | */ |
| 1217 | min_lane_count = max_lane_count; |
| 1218 | min_clock = max_clock; |
Imre Deak | 7984211 | 2013-07-18 17:44:13 +0300 | [diff] [blame] | 1219 | } |
Daniel Vetter | 657445f | 2013-05-04 10:09:18 +0200 | [diff] [blame] | 1220 | |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 1221 | for (; bpp >= 6*3; bpp -= 2*3) { |
Damien Lespiau | 241bfc3 | 2013-09-25 16:45:37 +0100 | [diff] [blame] | 1222 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
| 1223 | bpp); |
Daniel Vetter | c486793 | 2012-04-10 10:42:36 +0200 | [diff] [blame] | 1224 | |
Dave Airlie | c693099 | 2014-07-14 11:04:39 +1000 | [diff] [blame] | 1225 | for (clock = min_clock; clock <= max_clock; clock++) { |
| 1226 | for (lane_count = min_lane_count; lane_count <= max_lane_count; lane_count <<= 1) { |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 1227 | link_clock = drm_dp_bw_code_to_link_rate(bws[clock]); |
| 1228 | link_avail = intel_dp_max_data_rate(link_clock, |
| 1229 | lane_count); |
Ville Syrjälä | 3685a8f | 2013-01-17 16:31:28 +0200 | [diff] [blame] | 1230 | |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 1231 | if (mode_rate <= link_avail) { |
| 1232 | goto found; |
| 1233 | } |
| 1234 | } |
| 1235 | } |
| 1236 | } |
| 1237 | |
| 1238 | return false; |
| 1239 | |
| 1240 | found: |
Ville Syrjälä | 55bc60d | 2013-01-17 16:31:29 +0200 | [diff] [blame] | 1241 | if (intel_dp->color_range_auto) { |
| 1242 | /* |
| 1243 | * See: |
| 1244 | * CEA-861-E - 5.1 Default Encoding Parameters |
| 1245 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry |
| 1246 | */ |
Thierry Reding | 18316c8 | 2012-12-20 15:41:44 +0100 | [diff] [blame] | 1247 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
Ville Syrjälä | 55bc60d | 2013-01-17 16:31:29 +0200 | [diff] [blame] | 1248 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
| 1249 | else |
| 1250 | intel_dp->color_range = 0; |
| 1251 | } |
| 1252 | |
Ville Syrjälä | 3685a8f | 2013-01-17 16:31:28 +0200 | [diff] [blame] | 1253 | if (intel_dp->color_range) |
Daniel Vetter | 50f3b01 | 2013-03-27 00:44:56 +0100 | [diff] [blame] | 1254 | pipe_config->limited_color_range = true; |
Ville Syrjälä | 3685a8f | 2013-01-17 16:31:28 +0200 | [diff] [blame] | 1255 | |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 1256 | intel_dp->link_bw = bws[clock]; |
| 1257 | intel_dp->lane_count = lane_count; |
Daniel Vetter | 657445f | 2013-05-04 10:09:18 +0200 | [diff] [blame] | 1258 | pipe_config->pipe_bpp = bpp; |
Daniel Vetter | ff9a675 | 2013-06-01 17:16:21 +0200 | [diff] [blame] | 1259 | pipe_config->port_clock = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); |
Daniel Vetter | c486793 | 2012-04-10 10:42:36 +0200 | [diff] [blame] | 1260 | |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 1261 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
| 1262 | intel_dp->link_bw, intel_dp->lane_count, |
Daniel Vetter | ff9a675 | 2013-06-01 17:16:21 +0200 | [diff] [blame] | 1263 | pipe_config->port_clock, bpp); |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 1264 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
| 1265 | mode_rate, link_avail); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1266 | |
Daniel Vetter | 03afc4a | 2013-04-02 23:42:31 +0200 | [diff] [blame] | 1267 | intel_link_compute_m_n(bpp, lane_count, |
Damien Lespiau | 241bfc3 | 2013-09-25 16:45:37 +0100 | [diff] [blame] | 1268 | adjusted_mode->crtc_clock, |
| 1269 | pipe_config->port_clock, |
Daniel Vetter | 03afc4a | 2013-04-02 23:42:31 +0200 | [diff] [blame] | 1270 | &pipe_config->dp_m_n); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1271 | |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 1272 | if (intel_connector->panel.downclock_mode != NULL && |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 1273 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
Vandana Kannan | f769cd2 | 2014-08-05 07:51:22 -0700 | [diff] [blame] | 1274 | pipe_config->has_drrs = true; |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 1275 | intel_link_compute_m_n(bpp, lane_count, |
| 1276 | intel_connector->panel.downclock_mode->clock, |
| 1277 | pipe_config->port_clock, |
| 1278 | &pipe_config->dp_m2_n2); |
| 1279 | } |
| 1280 | |
Damien Lespiau | 5416d87 | 2014-11-14 17:24:33 +0000 | [diff] [blame] | 1281 | if (IS_SKYLAKE(dev) && is_edp(intel_dp)) |
| 1282 | skl_edp_set_pll_config(pipe_config, intel_dp->link_bw); |
| 1283 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
Daniel Vetter | 0e50338 | 2014-07-04 11:26:04 -0300 | [diff] [blame] | 1284 | hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw); |
| 1285 | else |
| 1286 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); |
Daniel Vetter | c6bb353 | 2013-04-19 11:14:33 +0200 | [diff] [blame] | 1287 | |
Daniel Vetter | 3600836 | 2013-03-27 00:44:59 +0100 | [diff] [blame] | 1288 | return true; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1289 | } |
| 1290 | |
Daniel Vetter | 7c62a16 | 2013-06-01 17:16:20 +0200 | [diff] [blame] | 1291 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
Daniel Vetter | ea9b600 | 2012-11-29 15:59:31 +0100 | [diff] [blame] | 1292 | { |
Daniel Vetter | 7c62a16 | 2013-06-01 17:16:20 +0200 | [diff] [blame] | 1293 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
| 1294 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); |
| 1295 | struct drm_device *dev = crtc->base.dev; |
Daniel Vetter | ea9b600 | 2012-11-29 15:59:31 +0100 | [diff] [blame] | 1296 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1297 | u32 dpa_ctl; |
| 1298 | |
Ander Conselvan de Oliveira | 6e3c971 | 2015-01-15 14:55:25 +0200 | [diff] [blame] | 1299 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", |
| 1300 | crtc->config->port_clock); |
Daniel Vetter | ea9b600 | 2012-11-29 15:59:31 +0100 | [diff] [blame] | 1301 | dpa_ctl = I915_READ(DP_A); |
| 1302 | dpa_ctl &= ~DP_PLL_FREQ_MASK; |
| 1303 | |
Ander Conselvan de Oliveira | 6e3c971 | 2015-01-15 14:55:25 +0200 | [diff] [blame] | 1304 | if (crtc->config->port_clock == 162000) { |
Daniel Vetter | 1ce1703 | 2012-11-29 15:59:32 +0100 | [diff] [blame] | 1305 | /* For a long time we've carried around a ILK-DevA w/a for the |
| 1306 | * 160MHz clock. If we're really unlucky, it's still required. |
| 1307 | */ |
| 1308 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); |
Daniel Vetter | ea9b600 | 2012-11-29 15:59:31 +0100 | [diff] [blame] | 1309 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
Daniel Vetter | 7c62a16 | 2013-06-01 17:16:20 +0200 | [diff] [blame] | 1310 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
Daniel Vetter | ea9b600 | 2012-11-29 15:59:31 +0100 | [diff] [blame] | 1311 | } else { |
| 1312 | dpa_ctl |= DP_PLL_FREQ_270MHZ; |
Daniel Vetter | 7c62a16 | 2013-06-01 17:16:20 +0200 | [diff] [blame] | 1313 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
Daniel Vetter | ea9b600 | 2012-11-29 15:59:31 +0100 | [diff] [blame] | 1314 | } |
Daniel Vetter | 1ce1703 | 2012-11-29 15:59:32 +0100 | [diff] [blame] | 1315 | |
Daniel Vetter | ea9b600 | 2012-11-29 15:59:31 +0100 | [diff] [blame] | 1316 | I915_WRITE(DP_A, dpa_ctl); |
| 1317 | |
| 1318 | POSTING_READ(DP_A); |
| 1319 | udelay(500); |
| 1320 | } |
| 1321 | |
Daniel Vetter | 8ac33ed | 2014-04-24 23:54:54 +0200 | [diff] [blame] | 1322 | static void intel_dp_prepare(struct intel_encoder *encoder) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1323 | { |
Daniel Vetter | b934223d | 2013-07-21 21:37:05 +0200 | [diff] [blame] | 1324 | struct drm_device *dev = encoder->base.dev; |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1325 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | b934223d | 2013-07-21 21:37:05 +0200 | [diff] [blame] | 1326 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 1327 | enum port port = dp_to_dig_port(intel_dp)->port; |
Daniel Vetter | b934223d | 2013-07-21 21:37:05 +0200 | [diff] [blame] | 1328 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
Ander Conselvan de Oliveira | 6e3c971 | 2015-01-15 14:55:25 +0200 | [diff] [blame] | 1329 | struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1330 | |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1331 | /* |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 1332 | * There are four kinds of DP registers: |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1333 | * |
| 1334 | * IBX PCH |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 1335 | * SNB CPU |
| 1336 | * IVB CPU |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1337 | * CPT PCH |
| 1338 | * |
| 1339 | * IBX PCH and CPU are the same for almost everything, |
| 1340 | * except that the CPU DP PLL is configured in this |
| 1341 | * register |
| 1342 | * |
| 1343 | * CPT PCH is quite different, having many bits moved |
| 1344 | * to the TRANS_DP_CTL register instead. That |
| 1345 | * configuration happens (oddly) in ironlake_pch_enable |
| 1346 | */ |
Adam Jackson | 9c9e792 | 2010-04-05 17:57:59 -0400 | [diff] [blame] | 1347 | |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1348 | /* Preserve the BIOS-computed detected bit. This is |
| 1349 | * supposed to be read-only. |
| 1350 | */ |
| 1351 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1352 | |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1353 | /* Handle DP bits in common between all three register formats */ |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1354 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
Daniel Vetter | 17aa6be | 2013-04-30 14:01:40 +0200 | [diff] [blame] | 1355 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1356 | |
Ander Conselvan de Oliveira | 6e3c971 | 2015-01-15 14:55:25 +0200 | [diff] [blame] | 1357 | if (crtc->config->has_audio) |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 1358 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
Paulo Zanoni | 247d89f | 2012-10-15 15:51:33 -0300 | [diff] [blame] | 1359 | |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1360 | /* Split out the IBX/CPU vs CPT settings */ |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1361 | |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 1362 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 1363 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
| 1364 | intel_dp->DP |= DP_SYNC_HS_HIGH; |
| 1365 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) |
| 1366 | intel_dp->DP |= DP_SYNC_VS_HIGH; |
| 1367 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; |
| 1368 | |
Jani Nikula | 6aba5b6 | 2013-10-04 15:08:10 +0300 | [diff] [blame] | 1369 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 1370 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
| 1371 | |
Daniel Vetter | 7c62a16 | 2013-06-01 17:16:20 +0200 | [diff] [blame] | 1372 | intel_dp->DP |= crtc->pipe << 29; |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 1373 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
Jesse Barnes | b263401 | 2013-03-28 09:55:40 -0700 | [diff] [blame] | 1374 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
Ville Syrjälä | 3685a8f | 2013-01-17 16:31:28 +0200 | [diff] [blame] | 1375 | intel_dp->DP |= intel_dp->color_range; |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1376 | |
| 1377 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
| 1378 | intel_dp->DP |= DP_SYNC_HS_HIGH; |
| 1379 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) |
| 1380 | intel_dp->DP |= DP_SYNC_VS_HIGH; |
| 1381 | intel_dp->DP |= DP_LINK_TRAIN_OFF; |
| 1382 | |
Jani Nikula | 6aba5b6 | 2013-10-04 15:08:10 +0300 | [diff] [blame] | 1383 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1384 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
| 1385 | |
Chon Ming Lee | 44f37d1 | 2014-04-09 13:28:21 +0300 | [diff] [blame] | 1386 | if (!IS_CHERRYVIEW(dev)) { |
| 1387 | if (crtc->pipe == 1) |
| 1388 | intel_dp->DP |= DP_PIPEB_SELECT; |
| 1389 | } else { |
| 1390 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); |
| 1391 | } |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 1392 | } else { |
| 1393 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1394 | } |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1395 | } |
| 1396 | |
Paulo Zanoni | ffd6749d | 2013-12-19 14:29:42 -0200 | [diff] [blame] | 1397 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
| 1398 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1399 | |
Paulo Zanoni | 1a5ef5b | 2013-12-19 14:29:43 -0200 | [diff] [blame] | 1400 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
| 1401 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1402 | |
Paulo Zanoni | ffd6749d | 2013-12-19 14:29:42 -0200 | [diff] [blame] | 1403 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
| 1404 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1405 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1406 | static void wait_panel_status(struct intel_dp *intel_dp, |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1407 | u32 mask, |
| 1408 | u32 value) |
| 1409 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 1410 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1411 | struct drm_i915_private *dev_priv = dev->dev_private; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1412 | u32 pp_stat_reg, pp_ctrl_reg; |
| 1413 | |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1414 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 1415 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 1416 | pp_stat_reg = _pp_stat_reg(intel_dp); |
| 1417 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1418 | |
| 1419 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1420 | mask, value, |
| 1421 | I915_READ(pp_stat_reg), |
| 1422 | I915_READ(pp_ctrl_reg)); |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1423 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1424 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1425 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1426 | I915_READ(pp_stat_reg), |
| 1427 | I915_READ(pp_ctrl_reg)); |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1428 | } |
Chris Wilson | 54c136d | 2013-12-02 09:57:16 +0000 | [diff] [blame] | 1429 | |
| 1430 | DRM_DEBUG_KMS("Wait complete\n"); |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1431 | } |
| 1432 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1433 | static void wait_panel_on(struct intel_dp *intel_dp) |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1434 | { |
| 1435 | DRM_DEBUG_KMS("Wait for panel power on\n"); |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1436 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1437 | } |
| 1438 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1439 | static void wait_panel_off(struct intel_dp *intel_dp) |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1440 | { |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1441 | DRM_DEBUG_KMS("Wait for panel power off time\n"); |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1442 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1443 | } |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1444 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1445 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1446 | { |
| 1447 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); |
Paulo Zanoni | dce56b3 | 2013-12-19 14:29:40 -0200 | [diff] [blame] | 1448 | |
| 1449 | /* When we disable the VDD override bit last we have to do the manual |
| 1450 | * wait. */ |
| 1451 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, |
| 1452 | intel_dp->panel_power_cycle_delay); |
| 1453 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1454 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1455 | } |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1456 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1457 | static void wait_backlight_on(struct intel_dp *intel_dp) |
Paulo Zanoni | dce56b3 | 2013-12-19 14:29:40 -0200 | [diff] [blame] | 1458 | { |
| 1459 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, |
| 1460 | intel_dp->backlight_on_delay); |
| 1461 | } |
| 1462 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1463 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
Paulo Zanoni | dce56b3 | 2013-12-19 14:29:40 -0200 | [diff] [blame] | 1464 | { |
| 1465 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, |
| 1466 | intel_dp->backlight_off_delay); |
| 1467 | } |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1468 | |
Keith Packard | 832dd3c | 2011-11-01 19:34:06 -0700 | [diff] [blame] | 1469 | /* Read the current pp_control value, unlocking the register if it |
| 1470 | * is locked |
| 1471 | */ |
| 1472 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1473 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
Keith Packard | 832dd3c | 2011-11-01 19:34:06 -0700 | [diff] [blame] | 1474 | { |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1475 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 1476 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1477 | u32 control; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1478 | |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1479 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 1480 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 1481 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
Keith Packard | 832dd3c | 2011-11-01 19:34:06 -0700 | [diff] [blame] | 1482 | control &= ~PANEL_UNLOCK_MASK; |
| 1483 | control |= PANEL_UNLOCK_REGS; |
| 1484 | return control; |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1485 | } |
| 1486 | |
Ville Syrjälä | 951468f | 2014-09-04 14:55:31 +0300 | [diff] [blame] | 1487 | /* |
| 1488 | * Must be paired with edp_panel_vdd_off(). |
| 1489 | * Must hold pps_mutex around the whole on/off sequence. |
| 1490 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. |
| 1491 | */ |
Ville Syrjälä | 1e0560e | 2014-08-19 13:24:25 +0300 | [diff] [blame] | 1492 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1493 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 1494 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Imre Deak | 4e6e1a5 | 2014-03-27 17:45:11 +0200 | [diff] [blame] | 1495 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 1496 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1497 | struct drm_i915_private *dev_priv = dev->dev_private; |
Imre Deak | 4e6e1a5 | 2014-03-27 17:45:11 +0200 | [diff] [blame] | 1498 | enum intel_display_power_domain power_domain; |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1499 | u32 pp; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1500 | u32 pp_stat_reg, pp_ctrl_reg; |
Jani Nikula | adddaaf | 2014-03-14 16:51:13 +0200 | [diff] [blame] | 1501 | bool need_to_disable = !intel_dp->want_panel_vdd; |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1502 | |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1503 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 1504 | |
Keith Packard | 97af61f57 | 2011-09-28 16:23:51 -0700 | [diff] [blame] | 1505 | if (!is_edp(intel_dp)) |
Jani Nikula | adddaaf | 2014-03-14 16:51:13 +0200 | [diff] [blame] | 1506 | return false; |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1507 | |
Egbert Eich | 2c623c1 | 2014-11-25 12:54:57 +0100 | [diff] [blame] | 1508 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1509 | intel_dp->want_panel_vdd = true; |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1510 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1511 | if (edp_have_panel_vdd(intel_dp)) |
Jani Nikula | adddaaf | 2014-03-14 16:51:13 +0200 | [diff] [blame] | 1512 | return need_to_disable; |
Paulo Zanoni | b0665d5 | 2013-10-30 19:50:27 -0200 | [diff] [blame] | 1513 | |
Imre Deak | 4e6e1a5 | 2014-03-27 17:45:11 +0200 | [diff] [blame] | 1514 | power_domain = intel_display_port_power_domain(intel_encoder); |
| 1515 | intel_display_power_get(dev_priv, power_domain); |
Paulo Zanoni | e9cb81a | 2013-11-21 13:47:23 -0200 | [diff] [blame] | 1516 | |
Ville Syrjälä | 3936fcf | 2014-10-16 21:30:02 +0300 | [diff] [blame] | 1517 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
| 1518 | port_name(intel_dig_port->port)); |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1519 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1520 | if (!edp_have_panel_power(intel_dp)) |
| 1521 | wait_panel_power_cycle(intel_dp); |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1522 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1523 | pp = ironlake_get_pp_control(intel_dp); |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1524 | pp |= EDP_FORCE_VDD; |
Keith Packard | ebf33b1 | 2011-09-29 15:53:27 -0700 | [diff] [blame] | 1525 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 1526 | pp_stat_reg = _pp_stat_reg(intel_dp); |
| 1527 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1528 | |
| 1529 | I915_WRITE(pp_ctrl_reg, pp); |
| 1530 | POSTING_READ(pp_ctrl_reg); |
| 1531 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", |
| 1532 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); |
Keith Packard | ebf33b1 | 2011-09-29 15:53:27 -0700 | [diff] [blame] | 1533 | /* |
| 1534 | * If the panel wasn't on, delay before accessing aux channel |
| 1535 | */ |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1536 | if (!edp_have_panel_power(intel_dp)) { |
Ville Syrjälä | 3936fcf | 2014-10-16 21:30:02 +0300 | [diff] [blame] | 1537 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
| 1538 | port_name(intel_dig_port->port)); |
Keith Packard | f01eca2 | 2011-09-28 16:48:10 -0700 | [diff] [blame] | 1539 | msleep(intel_dp->panel_power_up_delay); |
Keith Packard | f01eca2 | 2011-09-28 16:48:10 -0700 | [diff] [blame] | 1540 | } |
Jani Nikula | adddaaf | 2014-03-14 16:51:13 +0200 | [diff] [blame] | 1541 | |
| 1542 | return need_to_disable; |
| 1543 | } |
| 1544 | |
Ville Syrjälä | 951468f | 2014-09-04 14:55:31 +0300 | [diff] [blame] | 1545 | /* |
| 1546 | * Must be paired with intel_edp_panel_vdd_off() or |
| 1547 | * intel_edp_panel_off(). |
| 1548 | * Nested calls to these functions are not allowed since |
| 1549 | * we drop the lock. Caller must use some higher level |
| 1550 | * locking to prevent nested calls from other threads. |
| 1551 | */ |
Daniel Vetter | b80d6c7 | 2014-03-19 15:54:37 +0100 | [diff] [blame] | 1552 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
Jani Nikula | adddaaf | 2014-03-14 16:51:13 +0200 | [diff] [blame] | 1553 | { |
Ville Syrjälä | c695b6b | 2014-08-18 22:16:03 +0300 | [diff] [blame] | 1554 | bool vdd; |
Jani Nikula | adddaaf | 2014-03-14 16:51:13 +0200 | [diff] [blame] | 1555 | |
Ville Syrjälä | c695b6b | 2014-08-18 22:16:03 +0300 | [diff] [blame] | 1556 | if (!is_edp(intel_dp)) |
| 1557 | return; |
| 1558 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1559 | pps_lock(intel_dp); |
Ville Syrjälä | c695b6b | 2014-08-18 22:16:03 +0300 | [diff] [blame] | 1560 | vdd = edp_panel_vdd_on(intel_dp); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1561 | pps_unlock(intel_dp); |
Ville Syrjälä | c695b6b | 2014-08-18 22:16:03 +0300 | [diff] [blame] | 1562 | |
Rob Clark | e2c719b | 2014-12-15 13:56:32 -0500 | [diff] [blame] | 1563 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
Ville Syrjälä | 3936fcf | 2014-10-16 21:30:02 +0300 | [diff] [blame] | 1564 | port_name(dp_to_dig_port(intel_dp)->port)); |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1565 | } |
| 1566 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1567 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1568 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 1569 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1570 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ville Syrjälä | be2c919 | 2014-08-18 22:16:01 +0300 | [diff] [blame] | 1571 | struct intel_digital_port *intel_dig_port = |
| 1572 | dp_to_dig_port(intel_dp); |
| 1573 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
| 1574 | enum intel_display_power_domain power_domain; |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1575 | u32 pp; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1576 | u32 pp_stat_reg, pp_ctrl_reg; |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1577 | |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1578 | lockdep_assert_held(&dev_priv->pps_mutex); |
Daniel Vetter | a0e99e6 | 2012-12-02 01:05:46 +0100 | [diff] [blame] | 1579 | |
Ville Syrjälä | 15e899a | 2014-08-18 22:16:02 +0300 | [diff] [blame] | 1580 | WARN_ON(intel_dp->want_panel_vdd); |
Imre Deak | 4e6e1a5 | 2014-03-27 17:45:11 +0200 | [diff] [blame] | 1581 | |
Ville Syrjälä | 15e899a | 2014-08-18 22:16:02 +0300 | [diff] [blame] | 1582 | if (!edp_have_panel_vdd(intel_dp)) |
Ville Syrjälä | be2c919 | 2014-08-18 22:16:01 +0300 | [diff] [blame] | 1583 | return; |
Paulo Zanoni | b0665d5 | 2013-10-30 19:50:27 -0200 | [diff] [blame] | 1584 | |
Ville Syrjälä | 3936fcf | 2014-10-16 21:30:02 +0300 | [diff] [blame] | 1585 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
| 1586 | port_name(intel_dig_port->port)); |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1587 | |
Ville Syrjälä | be2c919 | 2014-08-18 22:16:01 +0300 | [diff] [blame] | 1588 | pp = ironlake_get_pp_control(intel_dp); |
| 1589 | pp &= ~EDP_FORCE_VDD; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1590 | |
Ville Syrjälä | be2c919 | 2014-08-18 22:16:01 +0300 | [diff] [blame] | 1591 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
| 1592 | pp_stat_reg = _pp_stat_reg(intel_dp); |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1593 | |
Ville Syrjälä | be2c919 | 2014-08-18 22:16:01 +0300 | [diff] [blame] | 1594 | I915_WRITE(pp_ctrl_reg, pp); |
| 1595 | POSTING_READ(pp_ctrl_reg); |
Paulo Zanoni | 90791a5 | 2013-12-06 17:32:42 -0200 | [diff] [blame] | 1596 | |
Ville Syrjälä | be2c919 | 2014-08-18 22:16:01 +0300 | [diff] [blame] | 1597 | /* Make sure sequencer is idle before allowing subsequent activity */ |
| 1598 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", |
| 1599 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); |
Paulo Zanoni | e9cb81a | 2013-11-21 13:47:23 -0200 | [diff] [blame] | 1600 | |
Ville Syrjälä | be2c919 | 2014-08-18 22:16:01 +0300 | [diff] [blame] | 1601 | if ((pp & POWER_TARGET_ON) == 0) |
| 1602 | intel_dp->last_power_cycle = jiffies; |
Paulo Zanoni | e9cb81a | 2013-11-21 13:47:23 -0200 | [diff] [blame] | 1603 | |
Ville Syrjälä | be2c919 | 2014-08-18 22:16:01 +0300 | [diff] [blame] | 1604 | power_domain = intel_display_port_power_domain(intel_encoder); |
| 1605 | intel_display_power_put(dev_priv, power_domain); |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1606 | } |
| 1607 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1608 | static void edp_panel_vdd_work(struct work_struct *__work) |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1609 | { |
| 1610 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), |
| 1611 | struct intel_dp, panel_vdd_work); |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1612 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1613 | pps_lock(intel_dp); |
Ville Syrjälä | 15e899a | 2014-08-18 22:16:02 +0300 | [diff] [blame] | 1614 | if (!intel_dp->want_panel_vdd) |
| 1615 | edp_panel_vdd_off_sync(intel_dp); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1616 | pps_unlock(intel_dp); |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1617 | } |
| 1618 | |
Imre Deak | aba8689 | 2014-07-30 15:57:31 +0300 | [diff] [blame] | 1619 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
| 1620 | { |
| 1621 | unsigned long delay; |
| 1622 | |
| 1623 | /* |
| 1624 | * Queue the timer to fire a long time from now (relative to the power |
| 1625 | * down delay) to keep the panel power up across a sequence of |
| 1626 | * operations. |
| 1627 | */ |
| 1628 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); |
| 1629 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); |
| 1630 | } |
| 1631 | |
Ville Syrjälä | 951468f | 2014-09-04 14:55:31 +0300 | [diff] [blame] | 1632 | /* |
| 1633 | * Must be paired with edp_panel_vdd_on(). |
| 1634 | * Must hold pps_mutex around the whole on/off sequence. |
| 1635 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. |
| 1636 | */ |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1637 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1638 | { |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1639 | struct drm_i915_private *dev_priv = |
| 1640 | intel_dp_to_dev(intel_dp)->dev_private; |
| 1641 | |
| 1642 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 1643 | |
Keith Packard | 97af61f57 | 2011-09-28 16:23:51 -0700 | [diff] [blame] | 1644 | if (!is_edp(intel_dp)) |
| 1645 | return; |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1646 | |
Rob Clark | e2c719b | 2014-12-15 13:56:32 -0500 | [diff] [blame] | 1647 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
Ville Syrjälä | 3936fcf | 2014-10-16 21:30:02 +0300 | [diff] [blame] | 1648 | port_name(dp_to_dig_port(intel_dp)->port)); |
Keith Packard | f2e8b18 | 2011-11-01 20:01:35 -0700 | [diff] [blame] | 1649 | |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1650 | intel_dp->want_panel_vdd = false; |
| 1651 | |
Imre Deak | aba8689 | 2014-07-30 15:57:31 +0300 | [diff] [blame] | 1652 | if (sync) |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1653 | edp_panel_vdd_off_sync(intel_dp); |
Imre Deak | aba8689 | 2014-07-30 15:57:31 +0300 | [diff] [blame] | 1654 | else |
| 1655 | edp_panel_vdd_schedule_off(intel_dp); |
Jesse Barnes | 5d61350 | 2011-01-24 17:10:54 -0800 | [diff] [blame] | 1656 | } |
| 1657 | |
Ville Syrjälä | 9f0fb5b | 2014-10-16 21:27:32 +0300 | [diff] [blame] | 1658 | static void edp_panel_on(struct intel_dp *intel_dp) |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1659 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 1660 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1661 | struct drm_i915_private *dev_priv = dev->dev_private; |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1662 | u32 pp; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1663 | u32 pp_ctrl_reg; |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1664 | |
Ville Syrjälä | 9f0fb5b | 2014-10-16 21:27:32 +0300 | [diff] [blame] | 1665 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 1666 | |
Keith Packard | 97af61f57 | 2011-09-28 16:23:51 -0700 | [diff] [blame] | 1667 | if (!is_edp(intel_dp)) |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 1668 | return; |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1669 | |
Ville Syrjälä | 3936fcf | 2014-10-16 21:30:02 +0300 | [diff] [blame] | 1670 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
| 1671 | port_name(dp_to_dig_port(intel_dp)->port)); |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1672 | |
Ville Syrjälä | e7a89ac | 2014-10-16 21:30:07 +0300 | [diff] [blame] | 1673 | if (WARN(edp_have_panel_power(intel_dp), |
| 1674 | "eDP port %c panel power already on\n", |
| 1675 | port_name(dp_to_dig_port(intel_dp)->port))) |
Ville Syrjälä | 9f0fb5b | 2014-10-16 21:27:32 +0300 | [diff] [blame] | 1676 | return; |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1677 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1678 | wait_panel_power_cycle(intel_dp); |
Jesse Barnes | 37c6c9b | 2010-08-11 10:04:43 -0700 | [diff] [blame] | 1679 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 1680 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1681 | pp = ironlake_get_pp_control(intel_dp); |
Keith Packard | 05ce1a4 | 2011-09-29 16:33:01 -0700 | [diff] [blame] | 1682 | if (IS_GEN5(dev)) { |
| 1683 | /* ILK workaround: disable reset around power sequence */ |
| 1684 | pp &= ~PANEL_POWER_RESET; |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 1685 | I915_WRITE(pp_ctrl_reg, pp); |
| 1686 | POSTING_READ(pp_ctrl_reg); |
Keith Packard | 05ce1a4 | 2011-09-29 16:33:01 -0700 | [diff] [blame] | 1687 | } |
Jesse Barnes | 37c6c9b | 2010-08-11 10:04:43 -0700 | [diff] [blame] | 1688 | |
Keith Packard | 1c0ae80 | 2011-09-19 13:59:29 -0700 | [diff] [blame] | 1689 | pp |= POWER_TARGET_ON; |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1690 | if (!IS_GEN5(dev)) |
| 1691 | pp |= PANEL_POWER_RESET; |
| 1692 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1693 | I915_WRITE(pp_ctrl_reg, pp); |
| 1694 | POSTING_READ(pp_ctrl_reg); |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1695 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1696 | wait_panel_on(intel_dp); |
Paulo Zanoni | dce56b3 | 2013-12-19 14:29:40 -0200 | [diff] [blame] | 1697 | intel_dp->last_power_on = jiffies; |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1698 | |
Keith Packard | 05ce1a4 | 2011-09-29 16:33:01 -0700 | [diff] [blame] | 1699 | if (IS_GEN5(dev)) { |
| 1700 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 1701 | I915_WRITE(pp_ctrl_reg, pp); |
| 1702 | POSTING_READ(pp_ctrl_reg); |
Keith Packard | 05ce1a4 | 2011-09-29 16:33:01 -0700 | [diff] [blame] | 1703 | } |
Ville Syrjälä | 9f0fb5b | 2014-10-16 21:27:32 +0300 | [diff] [blame] | 1704 | } |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1705 | |
Ville Syrjälä | 9f0fb5b | 2014-10-16 21:27:32 +0300 | [diff] [blame] | 1706 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
| 1707 | { |
| 1708 | if (!is_edp(intel_dp)) |
| 1709 | return; |
| 1710 | |
| 1711 | pps_lock(intel_dp); |
| 1712 | edp_panel_on(intel_dp); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1713 | pps_unlock(intel_dp); |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1714 | } |
| 1715 | |
Ville Syrjälä | 9f0fb5b | 2014-10-16 21:27:32 +0300 | [diff] [blame] | 1716 | |
| 1717 | static void edp_panel_off(struct intel_dp *intel_dp) |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1718 | { |
Imre Deak | 4e6e1a5 | 2014-03-27 17:45:11 +0200 | [diff] [blame] | 1719 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 1720 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 1721 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1722 | struct drm_i915_private *dev_priv = dev->dev_private; |
Imre Deak | 4e6e1a5 | 2014-03-27 17:45:11 +0200 | [diff] [blame] | 1723 | enum intel_display_power_domain power_domain; |
Keith Packard | 99ea712 | 2011-11-01 19:57:50 -0700 | [diff] [blame] | 1724 | u32 pp; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1725 | u32 pp_ctrl_reg; |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1726 | |
Ville Syrjälä | 9f0fb5b | 2014-10-16 21:27:32 +0300 | [diff] [blame] | 1727 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 1728 | |
Keith Packard | 97af61f57 | 2011-09-28 16:23:51 -0700 | [diff] [blame] | 1729 | if (!is_edp(intel_dp)) |
| 1730 | return; |
Jesse Barnes | 37c6c9b | 2010-08-11 10:04:43 -0700 | [diff] [blame] | 1731 | |
Ville Syrjälä | 3936fcf | 2014-10-16 21:30:02 +0300 | [diff] [blame] | 1732 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
| 1733 | port_name(dp_to_dig_port(intel_dp)->port)); |
Jesse Barnes | 37c6c9b | 2010-08-11 10:04:43 -0700 | [diff] [blame] | 1734 | |
Ville Syrjälä | 3936fcf | 2014-10-16 21:30:02 +0300 | [diff] [blame] | 1735 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
| 1736 | port_name(dp_to_dig_port(intel_dp)->port)); |
Jani Nikula | 24f3e09 | 2014-03-17 16:43:36 +0200 | [diff] [blame] | 1737 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1738 | pp = ironlake_get_pp_control(intel_dp); |
Daniel Vetter | 35a3855 | 2012-08-12 22:17:14 +0200 | [diff] [blame] | 1739 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
| 1740 | * panels get very unhappy and cease to work. */ |
Patrik Jakobsson | b306415 | 2014-03-04 00:42:44 +0100 | [diff] [blame] | 1741 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
| 1742 | EDP_BLC_ENABLE); |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1743 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 1744 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1745 | |
Paulo Zanoni | 849e39f | 2014-03-07 20:05:20 -0300 | [diff] [blame] | 1746 | intel_dp->want_panel_vdd = false; |
| 1747 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1748 | I915_WRITE(pp_ctrl_reg, pp); |
| 1749 | POSTING_READ(pp_ctrl_reg); |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1750 | |
Paulo Zanoni | dce56b3 | 2013-12-19 14:29:40 -0200 | [diff] [blame] | 1751 | intel_dp->last_power_cycle = jiffies; |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1752 | wait_panel_off(intel_dp); |
Paulo Zanoni | 849e39f | 2014-03-07 20:05:20 -0300 | [diff] [blame] | 1753 | |
| 1754 | /* We got a reference when we enabled the VDD. */ |
Imre Deak | 4e6e1a5 | 2014-03-27 17:45:11 +0200 | [diff] [blame] | 1755 | power_domain = intel_display_port_power_domain(intel_encoder); |
| 1756 | intel_display_power_put(dev_priv, power_domain); |
Ville Syrjälä | 9f0fb5b | 2014-10-16 21:27:32 +0300 | [diff] [blame] | 1757 | } |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1758 | |
Ville Syrjälä | 9f0fb5b | 2014-10-16 21:27:32 +0300 | [diff] [blame] | 1759 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
| 1760 | { |
| 1761 | if (!is_edp(intel_dp)) |
| 1762 | return; |
| 1763 | |
| 1764 | pps_lock(intel_dp); |
| 1765 | edp_panel_off(intel_dp); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1766 | pps_unlock(intel_dp); |
Jesse Barnes | 9934c13 | 2010-07-22 13:18:19 -0700 | [diff] [blame] | 1767 | } |
| 1768 | |
Jani Nikula | 1250d10 | 2014-08-12 17:11:39 +0300 | [diff] [blame] | 1769 | /* Enable backlight in the panel power control. */ |
| 1770 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1771 | { |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 1772 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 1773 | struct drm_device *dev = intel_dig_port->base.base.dev; |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1774 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1775 | u32 pp; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1776 | u32 pp_ctrl_reg; |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1777 | |
Jesse Barnes | 01cb9ea | 2010-10-07 16:01:12 -0700 | [diff] [blame] | 1778 | /* |
| 1779 | * If we enable the backlight right away following a panel power |
| 1780 | * on, we may see slight flicker as the panel syncs with the eDP |
| 1781 | * link. So delay a bit to make sure the image is solid before |
| 1782 | * allowing it to appear. |
| 1783 | */ |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 1784 | wait_backlight_on(intel_dp); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1785 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1786 | pps_lock(intel_dp); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1787 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1788 | pp = ironlake_get_pp_control(intel_dp); |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1789 | pp |= EDP_BLC_ENABLE; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1790 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 1791 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1792 | |
| 1793 | I915_WRITE(pp_ctrl_reg, pp); |
| 1794 | POSTING_READ(pp_ctrl_reg); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1795 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1796 | pps_unlock(intel_dp); |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1797 | } |
| 1798 | |
Jani Nikula | 1250d10 | 2014-08-12 17:11:39 +0300 | [diff] [blame] | 1799 | /* Enable backlight PWM and backlight PP control. */ |
| 1800 | void intel_edp_backlight_on(struct intel_dp *intel_dp) |
| 1801 | { |
| 1802 | if (!is_edp(intel_dp)) |
| 1803 | return; |
| 1804 | |
| 1805 | DRM_DEBUG_KMS("\n"); |
| 1806 | |
| 1807 | intel_panel_enable_backlight(intel_dp->attached_connector); |
| 1808 | _intel_edp_backlight_on(intel_dp); |
| 1809 | } |
| 1810 | |
| 1811 | /* Disable backlight in the panel power control. */ |
| 1812 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1813 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 1814 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1815 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1816 | u32 pp; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1817 | u32 pp_ctrl_reg; |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1818 | |
Keith Packard | f01eca2 | 2011-09-28 16:48:10 -0700 | [diff] [blame] | 1819 | if (!is_edp(intel_dp)) |
| 1820 | return; |
| 1821 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1822 | pps_lock(intel_dp); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1823 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1824 | pp = ironlake_get_pp_control(intel_dp); |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1825 | pp &= ~EDP_BLC_ENABLE; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1826 | |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 1827 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 1828 | |
| 1829 | I915_WRITE(pp_ctrl_reg, pp); |
| 1830 | POSTING_READ(pp_ctrl_reg); |
Jesse Barnes | f7d2323 | 2014-03-31 11:13:56 -0700 | [diff] [blame] | 1831 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1832 | pps_unlock(intel_dp); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1833 | |
Paulo Zanoni | dce56b3 | 2013-12-19 14:29:40 -0200 | [diff] [blame] | 1834 | intel_dp->last_backlight_off = jiffies; |
Jesse Barnes | f7d2323 | 2014-03-31 11:13:56 -0700 | [diff] [blame] | 1835 | edp_wait_backlight_off(intel_dp); |
Jani Nikula | 1250d10 | 2014-08-12 17:11:39 +0300 | [diff] [blame] | 1836 | } |
Jesse Barnes | f7d2323 | 2014-03-31 11:13:56 -0700 | [diff] [blame] | 1837 | |
Jani Nikula | 1250d10 | 2014-08-12 17:11:39 +0300 | [diff] [blame] | 1838 | /* Disable backlight PP control and backlight PWM. */ |
| 1839 | void intel_edp_backlight_off(struct intel_dp *intel_dp) |
| 1840 | { |
| 1841 | if (!is_edp(intel_dp)) |
| 1842 | return; |
| 1843 | |
| 1844 | DRM_DEBUG_KMS("\n"); |
| 1845 | |
| 1846 | _intel_edp_backlight_off(intel_dp); |
Jesse Barnes | f7d2323 | 2014-03-31 11:13:56 -0700 | [diff] [blame] | 1847 | intel_panel_disable_backlight(intel_dp->attached_connector); |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 1848 | } |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 1849 | |
Jani Nikula | 73580fb7 | 2014-08-12 17:11:41 +0300 | [diff] [blame] | 1850 | /* |
| 1851 | * Hook for controlling the panel power control backlight through the bl_power |
| 1852 | * sysfs attribute. Take care to handle multiple calls. |
| 1853 | */ |
| 1854 | static void intel_edp_backlight_power(struct intel_connector *connector, |
| 1855 | bool enable) |
| 1856 | { |
| 1857 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1858 | bool is_enabled; |
| 1859 | |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1860 | pps_lock(intel_dp); |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 1861 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 1862 | pps_unlock(intel_dp); |
Jani Nikula | 73580fb7 | 2014-08-12 17:11:41 +0300 | [diff] [blame] | 1863 | |
| 1864 | if (is_enabled == enable) |
| 1865 | return; |
| 1866 | |
Jani Nikula | 23ba937 | 2014-08-27 14:08:43 +0300 | [diff] [blame] | 1867 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
| 1868 | enable ? "enable" : "disable"); |
Jani Nikula | 73580fb7 | 2014-08-12 17:11:41 +0300 | [diff] [blame] | 1869 | |
| 1870 | if (enable) |
| 1871 | _intel_edp_backlight_on(intel_dp); |
| 1872 | else |
| 1873 | _intel_edp_backlight_off(intel_dp); |
| 1874 | } |
| 1875 | |
Daniel Vetter | 2bd2ad6 | 2012-09-06 22:15:41 +0200 | [diff] [blame] | 1876 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1877 | { |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 1878 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 1879 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
| 1880 | struct drm_device *dev = crtc->dev; |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1881 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1882 | u32 dpa_ctl; |
| 1883 | |
Daniel Vetter | 2bd2ad6 | 2012-09-06 22:15:41 +0200 | [diff] [blame] | 1884 | assert_pipe_disabled(dev_priv, |
| 1885 | to_intel_crtc(crtc)->pipe); |
| 1886 | |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1887 | DRM_DEBUG_KMS("\n"); |
| 1888 | dpa_ctl = I915_READ(DP_A); |
Daniel Vetter | 0767935 | 2012-09-06 22:15:42 +0200 | [diff] [blame] | 1889 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
| 1890 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); |
| 1891 | |
| 1892 | /* We don't adjust intel_dp->DP while tearing down the link, to |
| 1893 | * facilitate link retraining (e.g. after hotplug). Hence clear all |
| 1894 | * enable bits here to ensure that we don't enable too much. */ |
| 1895 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); |
| 1896 | intel_dp->DP |= DP_PLL_ENABLE; |
| 1897 | I915_WRITE(DP_A, intel_dp->DP); |
Jesse Barnes | 298b0b3 | 2010-10-07 16:01:24 -0700 | [diff] [blame] | 1898 | POSTING_READ(DP_A); |
| 1899 | udelay(200); |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1900 | } |
| 1901 | |
Daniel Vetter | 2bd2ad6 | 2012-09-06 22:15:41 +0200 | [diff] [blame] | 1902 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1903 | { |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 1904 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 1905 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
| 1906 | struct drm_device *dev = crtc->dev; |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1907 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1908 | u32 dpa_ctl; |
| 1909 | |
Daniel Vetter | 2bd2ad6 | 2012-09-06 22:15:41 +0200 | [diff] [blame] | 1910 | assert_pipe_disabled(dev_priv, |
| 1911 | to_intel_crtc(crtc)->pipe); |
| 1912 | |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1913 | dpa_ctl = I915_READ(DP_A); |
Daniel Vetter | 0767935 | 2012-09-06 22:15:42 +0200 | [diff] [blame] | 1914 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
| 1915 | "dp pll off, should be on\n"); |
| 1916 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); |
| 1917 | |
| 1918 | /* We can't rely on the value tracked for the DP register in |
| 1919 | * intel_dp->DP because link_down must not change that (otherwise link |
| 1920 | * re-training will fail. */ |
Jesse Barnes | 298b0b3 | 2010-10-07 16:01:24 -0700 | [diff] [blame] | 1921 | dpa_ctl &= ~DP_PLL_ENABLE; |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1922 | I915_WRITE(DP_A, dpa_ctl); |
Chris Wilson | 1af5fa1 | 2010-09-08 21:07:28 +0100 | [diff] [blame] | 1923 | POSTING_READ(DP_A); |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1924 | udelay(200); |
| 1925 | } |
| 1926 | |
Jesse Barnes | c7ad381 | 2011-07-07 11:11:03 -0700 | [diff] [blame] | 1927 | /* If the sink supports it, try to set the power state appropriately */ |
Paulo Zanoni | c19b066 | 2012-10-15 15:51:41 -0300 | [diff] [blame] | 1928 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
Jesse Barnes | c7ad381 | 2011-07-07 11:11:03 -0700 | [diff] [blame] | 1929 | { |
| 1930 | int ret, i; |
| 1931 | |
| 1932 | /* Should have a valid DPCD by this point */ |
| 1933 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) |
| 1934 | return; |
| 1935 | |
| 1936 | if (mode != DRM_MODE_DPMS_ON) { |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 1937 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
| 1938 | DP_SET_POWER_D3); |
Jesse Barnes | c7ad381 | 2011-07-07 11:11:03 -0700 | [diff] [blame] | 1939 | } else { |
| 1940 | /* |
| 1941 | * When turning on, we need to retry for 1ms to give the sink |
| 1942 | * time to wake up. |
| 1943 | */ |
| 1944 | for (i = 0; i < 3; i++) { |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 1945 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
| 1946 | DP_SET_POWER_D0); |
Jesse Barnes | c7ad381 | 2011-07-07 11:11:03 -0700 | [diff] [blame] | 1947 | if (ret == 1) |
| 1948 | break; |
| 1949 | msleep(1); |
| 1950 | } |
| 1951 | } |
Jani Nikula | f9cac72 | 2014-09-02 16:33:52 +0300 | [diff] [blame] | 1952 | |
| 1953 | if (ret != 1) |
| 1954 | DRM_DEBUG_KMS("failed to %s sink power state\n", |
| 1955 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); |
Jesse Barnes | c7ad381 | 2011-07-07 11:11:03 -0700 | [diff] [blame] | 1956 | } |
| 1957 | |
Daniel Vetter | 19d8fe1 | 2012-07-02 13:26:27 +0200 | [diff] [blame] | 1958 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
| 1959 | enum pipe *pipe) |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1960 | { |
Daniel Vetter | 19d8fe1 | 2012-07-02 13:26:27 +0200 | [diff] [blame] | 1961 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 1962 | enum port port = dp_to_dig_port(intel_dp)->port; |
Daniel Vetter | 19d8fe1 | 2012-07-02 13:26:27 +0200 | [diff] [blame] | 1963 | struct drm_device *dev = encoder->base.dev; |
| 1964 | struct drm_i915_private *dev_priv = dev->dev_private; |
Imre Deak | 6d129be | 2014-03-05 16:20:54 +0200 | [diff] [blame] | 1965 | enum intel_display_power_domain power_domain; |
| 1966 | u32 tmp; |
| 1967 | |
| 1968 | power_domain = intel_display_port_power_domain(encoder); |
Daniel Vetter | f458ebb | 2014-09-30 10:56:39 +0200 | [diff] [blame] | 1969 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
Imre Deak | 6d129be | 2014-03-05 16:20:54 +0200 | [diff] [blame] | 1970 | return false; |
| 1971 | |
| 1972 | tmp = I915_READ(intel_dp->output_reg); |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 1973 | |
Daniel Vetter | 19d8fe1 | 2012-07-02 13:26:27 +0200 | [diff] [blame] | 1974 | if (!(tmp & DP_PORT_EN)) |
| 1975 | return false; |
| 1976 | |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 1977 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
Daniel Vetter | 19d8fe1 | 2012-07-02 13:26:27 +0200 | [diff] [blame] | 1978 | *pipe = PORT_TO_PIPE_CPT(tmp); |
Ville Syrjälä | 71485e0 | 2014-04-09 13:28:55 +0300 | [diff] [blame] | 1979 | } else if (IS_CHERRYVIEW(dev)) { |
| 1980 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 1981 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
Daniel Vetter | 19d8fe1 | 2012-07-02 13:26:27 +0200 | [diff] [blame] | 1982 | *pipe = PORT_TO_PIPE(tmp); |
| 1983 | } else { |
| 1984 | u32 trans_sel; |
| 1985 | u32 trans_dp; |
| 1986 | int i; |
| 1987 | |
| 1988 | switch (intel_dp->output_reg) { |
| 1989 | case PCH_DP_B: |
| 1990 | trans_sel = TRANS_DP_PORT_SEL_B; |
| 1991 | break; |
| 1992 | case PCH_DP_C: |
| 1993 | trans_sel = TRANS_DP_PORT_SEL_C; |
| 1994 | break; |
| 1995 | case PCH_DP_D: |
| 1996 | trans_sel = TRANS_DP_PORT_SEL_D; |
| 1997 | break; |
| 1998 | default: |
| 1999 | return true; |
| 2000 | } |
| 2001 | |
Damien Lespiau | 055e393 | 2014-08-18 13:49:10 +0100 | [diff] [blame] | 2002 | for_each_pipe(dev_priv, i) { |
Daniel Vetter | 19d8fe1 | 2012-07-02 13:26:27 +0200 | [diff] [blame] | 2003 | trans_dp = I915_READ(TRANS_DP_CTL(i)); |
| 2004 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { |
| 2005 | *pipe = i; |
| 2006 | return true; |
| 2007 | } |
| 2008 | } |
Daniel Vetter | 19d8fe1 | 2012-07-02 13:26:27 +0200 | [diff] [blame] | 2009 | |
Daniel Vetter | 4a0833e | 2012-10-26 10:58:11 +0200 | [diff] [blame] | 2010 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
| 2011 | intel_dp->output_reg); |
| 2012 | } |
Daniel Vetter | 19d8fe1 | 2012-07-02 13:26:27 +0200 | [diff] [blame] | 2013 | |
| 2014 | return true; |
| 2015 | } |
| 2016 | |
Jesse Barnes | 045ac3b | 2013-05-14 17:08:26 -0700 | [diff] [blame] | 2017 | static void intel_dp_get_config(struct intel_encoder *encoder, |
Ander Conselvan de Oliveira | 5cec258 | 2015-01-15 14:55:21 +0200 | [diff] [blame] | 2018 | struct intel_crtc_state *pipe_config) |
Jesse Barnes | 045ac3b | 2013-05-14 17:08:26 -0700 | [diff] [blame] | 2019 | { |
| 2020 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
Jesse Barnes | 045ac3b | 2013-05-14 17:08:26 -0700 | [diff] [blame] | 2021 | u32 tmp, flags = 0; |
Xiong Zhang | 63000ef | 2013-06-28 12:59:06 +0800 | [diff] [blame] | 2022 | struct drm_device *dev = encoder->base.dev; |
| 2023 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2024 | enum port port = dp_to_dig_port(intel_dp)->port; |
| 2025 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
Ville Syrjälä | 18442d0 | 2013-09-13 16:00:08 +0300 | [diff] [blame] | 2026 | int dotclock; |
Jesse Barnes | 045ac3b | 2013-05-14 17:08:26 -0700 | [diff] [blame] | 2027 | |
Daniel Vetter | 9ed109a | 2014-04-24 23:54:52 +0200 | [diff] [blame] | 2028 | tmp = I915_READ(intel_dp->output_reg); |
| 2029 | if (tmp & DP_AUDIO_OUTPUT_ENABLE) |
| 2030 | pipe_config->has_audio = true; |
| 2031 | |
Xiong Zhang | 63000ef | 2013-06-28 12:59:06 +0800 | [diff] [blame] | 2032 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
Xiong Zhang | 63000ef | 2013-06-28 12:59:06 +0800 | [diff] [blame] | 2033 | if (tmp & DP_SYNC_HS_HIGH) |
| 2034 | flags |= DRM_MODE_FLAG_PHSYNC; |
| 2035 | else |
| 2036 | flags |= DRM_MODE_FLAG_NHSYNC; |
Jesse Barnes | 045ac3b | 2013-05-14 17:08:26 -0700 | [diff] [blame] | 2037 | |
Xiong Zhang | 63000ef | 2013-06-28 12:59:06 +0800 | [diff] [blame] | 2038 | if (tmp & DP_SYNC_VS_HIGH) |
| 2039 | flags |= DRM_MODE_FLAG_PVSYNC; |
| 2040 | else |
| 2041 | flags |= DRM_MODE_FLAG_NVSYNC; |
| 2042 | } else { |
| 2043 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); |
| 2044 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) |
| 2045 | flags |= DRM_MODE_FLAG_PHSYNC; |
| 2046 | else |
| 2047 | flags |= DRM_MODE_FLAG_NHSYNC; |
Jesse Barnes | 045ac3b | 2013-05-14 17:08:26 -0700 | [diff] [blame] | 2048 | |
Xiong Zhang | 63000ef | 2013-06-28 12:59:06 +0800 | [diff] [blame] | 2049 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
| 2050 | flags |= DRM_MODE_FLAG_PVSYNC; |
| 2051 | else |
| 2052 | flags |= DRM_MODE_FLAG_NVSYNC; |
| 2053 | } |
Jesse Barnes | 045ac3b | 2013-05-14 17:08:26 -0700 | [diff] [blame] | 2054 | |
Ander Conselvan de Oliveira | 2d112de | 2015-01-15 14:55:22 +0200 | [diff] [blame] | 2055 | pipe_config->base.adjusted_mode.flags |= flags; |
Jesse Barnes | f1f644d | 2013-06-27 00:39:25 +0300 | [diff] [blame] | 2056 | |
Ville Syrjälä | 8c875fc | 2014-09-12 15:46:29 +0300 | [diff] [blame] | 2057 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
| 2058 | tmp & DP_COLOR_RANGE_16_235) |
| 2059 | pipe_config->limited_color_range = true; |
| 2060 | |
Ville Syrjälä | eb14cb7 | 2013-09-10 17:02:54 +0300 | [diff] [blame] | 2061 | pipe_config->has_dp_encoder = true; |
| 2062 | |
| 2063 | intel_dp_get_m_n(crtc, pipe_config); |
| 2064 | |
Ville Syrjälä | 18442d0 | 2013-09-13 16:00:08 +0300 | [diff] [blame] | 2065 | if (port == PORT_A) { |
Jesse Barnes | f1f644d | 2013-06-27 00:39:25 +0300 | [diff] [blame] | 2066 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
| 2067 | pipe_config->port_clock = 162000; |
| 2068 | else |
| 2069 | pipe_config->port_clock = 270000; |
| 2070 | } |
Ville Syrjälä | 18442d0 | 2013-09-13 16:00:08 +0300 | [diff] [blame] | 2071 | |
| 2072 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, |
| 2073 | &pipe_config->dp_m_n); |
| 2074 | |
| 2075 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) |
| 2076 | ironlake_check_encoder_dotclock(pipe_config, dotclock); |
| 2077 | |
Ander Conselvan de Oliveira | 2d112de | 2015-01-15 14:55:22 +0200 | [diff] [blame] | 2078 | pipe_config->base.adjusted_mode.crtc_clock = dotclock; |
Daniel Vetter | 7f16e5c | 2013-11-04 16:28:47 +0100 | [diff] [blame] | 2079 | |
Jani Nikula | c6cd2ee | 2013-10-21 10:52:07 +0300 | [diff] [blame] | 2080 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
| 2081 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { |
| 2082 | /* |
| 2083 | * This is a big fat ugly hack. |
| 2084 | * |
| 2085 | * Some machines in UEFI boot mode provide us a VBT that has 18 |
| 2086 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons |
| 2087 | * unknown we fail to light up. Yet the same BIOS boots up with |
| 2088 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as |
| 2089 | * max, not what it tells us to use. |
| 2090 | * |
| 2091 | * Note: This will still be broken if the eDP panel is not lit |
| 2092 | * up by the BIOS, and thus we can't get the mode at module |
| 2093 | * load. |
| 2094 | */ |
| 2095 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", |
| 2096 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); |
| 2097 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; |
| 2098 | } |
Jesse Barnes | 045ac3b | 2013-05-14 17:08:26 -0700 | [diff] [blame] | 2099 | } |
| 2100 | |
Daniel Vetter | e8cb455 | 2012-07-01 13:05:48 +0200 | [diff] [blame] | 2101 | static void intel_disable_dp(struct intel_encoder *encoder) |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 2102 | { |
Daniel Vetter | e8cb455 | 2012-07-01 13:05:48 +0200 | [diff] [blame] | 2103 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
Imre Deak | 982a386 | 2013-05-23 19:39:40 +0300 | [diff] [blame] | 2104 | struct drm_device *dev = encoder->base.dev; |
Jani Nikula | 495a5bb | 2014-10-27 16:26:55 +0200 | [diff] [blame] | 2105 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
| 2106 | |
Ander Conselvan de Oliveira | 6e3c971 | 2015-01-15 14:55:25 +0200 | [diff] [blame] | 2107 | if (crtc->config->has_audio) |
Jani Nikula | 495a5bb | 2014-10-27 16:26:55 +0200 | [diff] [blame] | 2108 | intel_audio_codec_disable(encoder); |
Daniel Vetter | 6cb4983 | 2012-05-20 17:14:50 +0200 | [diff] [blame] | 2109 | |
Rodrigo Vivi | b32c6f4 | 2014-11-20 03:44:37 -0800 | [diff] [blame] | 2110 | if (HAS_PSR(dev) && !HAS_DDI(dev)) |
| 2111 | intel_psr_disable(intel_dp); |
| 2112 | |
Daniel Vetter | 6cb4983 | 2012-05-20 17:14:50 +0200 | [diff] [blame] | 2113 | /* Make sure the panel is off before trying to change the mode. But also |
| 2114 | * ensure that we have vdd while we switch off the panel. */ |
Jani Nikula | 24f3e09 | 2014-03-17 16:43:36 +0200 | [diff] [blame] | 2115 | intel_edp_panel_vdd_on(intel_dp); |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 2116 | intel_edp_backlight_off(intel_dp); |
Jani Nikula | fdbc3b1 | 2013-11-12 17:10:13 +0200 | [diff] [blame] | 2117 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 2118 | intel_edp_panel_off(intel_dp); |
Daniel Vetter | 3739850 | 2012-09-06 22:15:44 +0200 | [diff] [blame] | 2119 | |
Ville Syrjälä | 08aff3f | 2014-08-18 22:16:09 +0300 | [diff] [blame] | 2120 | /* disable the port before the pipe on g4x */ |
| 2121 | if (INTEL_INFO(dev)->gen < 5) |
Daniel Vetter | 3739850 | 2012-09-06 22:15:44 +0200 | [diff] [blame] | 2122 | intel_dp_link_down(intel_dp); |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 2123 | } |
| 2124 | |
Ville Syrjälä | 08aff3f | 2014-08-18 22:16:09 +0300 | [diff] [blame] | 2125 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 2126 | { |
Daniel Vetter | 2bd2ad6 | 2012-09-06 22:15:41 +0200 | [diff] [blame] | 2127 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
Imre Deak | 982a386 | 2013-05-23 19:39:40 +0300 | [diff] [blame] | 2128 | enum port port = dp_to_dig_port(intel_dp)->port; |
Daniel Vetter | 2bd2ad6 | 2012-09-06 22:15:41 +0200 | [diff] [blame] | 2129 | |
Ville Syrjälä | 49277c3 | 2014-03-31 18:21:26 +0300 | [diff] [blame] | 2130 | intel_dp_link_down(intel_dp); |
Ville Syrjälä | 08aff3f | 2014-08-18 22:16:09 +0300 | [diff] [blame] | 2131 | if (port == PORT_A) |
| 2132 | ironlake_edp_pll_off(intel_dp); |
Ville Syrjälä | 49277c3 | 2014-03-31 18:21:26 +0300 | [diff] [blame] | 2133 | } |
| 2134 | |
| 2135 | static void vlv_post_disable_dp(struct intel_encoder *encoder) |
| 2136 | { |
| 2137 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
| 2138 | |
| 2139 | intel_dp_link_down(intel_dp); |
Daniel Vetter | 2bd2ad6 | 2012-09-06 22:15:41 +0200 | [diff] [blame] | 2140 | } |
| 2141 | |
Ville Syrjälä | 580d381 | 2014-04-09 13:29:00 +0300 | [diff] [blame] | 2142 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
| 2143 | { |
| 2144 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
| 2145 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
| 2146 | struct drm_device *dev = encoder->base.dev; |
| 2147 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2148 | struct intel_crtc *intel_crtc = |
| 2149 | to_intel_crtc(encoder->base.crtc); |
| 2150 | enum dpio_channel ch = vlv_dport_to_channel(dport); |
| 2151 | enum pipe pipe = intel_crtc->pipe; |
| 2152 | u32 val; |
| 2153 | |
| 2154 | intel_dp_link_down(intel_dp); |
| 2155 | |
| 2156 | mutex_lock(&dev_priv->dpio_lock); |
| 2157 | |
| 2158 | /* Propagate soft reset to data lane reset */ |
Ville Syrjälä | 97fd4d5 | 2014-04-09 13:29:02 +0300 | [diff] [blame] | 2159 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
Ville Syrjälä | d2152b2 | 2014-04-28 14:15:24 +0300 | [diff] [blame] | 2160 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
Ville Syrjälä | 97fd4d5 | 2014-04-09 13:29:02 +0300 | [diff] [blame] | 2161 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
Ville Syrjälä | d2152b2 | 2014-04-28 14:15:24 +0300 | [diff] [blame] | 2162 | |
Ville Syrjälä | 97fd4d5 | 2014-04-09 13:29:02 +0300 | [diff] [blame] | 2163 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
| 2164 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
| 2165 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); |
| 2166 | |
| 2167 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); |
Ville Syrjälä | 580d381 | 2014-04-09 13:29:00 +0300 | [diff] [blame] | 2168 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
Ville Syrjälä | 97fd4d5 | 2014-04-09 13:29:02 +0300 | [diff] [blame] | 2169 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); |
| 2170 | |
| 2171 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
| 2172 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
| 2173 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
Ville Syrjälä | 580d381 | 2014-04-09 13:29:00 +0300 | [diff] [blame] | 2174 | |
| 2175 | mutex_unlock(&dev_priv->dpio_lock); |
| 2176 | } |
| 2177 | |
Ville Syrjälä | 7b13b58 | 2014-08-18 22:16:08 +0300 | [diff] [blame] | 2178 | static void |
| 2179 | _intel_dp_set_link_train(struct intel_dp *intel_dp, |
| 2180 | uint32_t *DP, |
| 2181 | uint8_t dp_train_pat) |
| 2182 | { |
| 2183 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 2184 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 2185 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2186 | enum port port = intel_dig_port->port; |
| 2187 | |
| 2188 | if (HAS_DDI(dev)) { |
| 2189 | uint32_t temp = I915_READ(DP_TP_CTL(port)); |
| 2190 | |
| 2191 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) |
| 2192 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; |
| 2193 | else |
| 2194 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; |
| 2195 | |
| 2196 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; |
| 2197 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { |
| 2198 | case DP_TRAINING_PATTERN_DISABLE: |
| 2199 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; |
| 2200 | |
| 2201 | break; |
| 2202 | case DP_TRAINING_PATTERN_1: |
| 2203 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; |
| 2204 | break; |
| 2205 | case DP_TRAINING_PATTERN_2: |
| 2206 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; |
| 2207 | break; |
| 2208 | case DP_TRAINING_PATTERN_3: |
| 2209 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; |
| 2210 | break; |
| 2211 | } |
| 2212 | I915_WRITE(DP_TP_CTL(port), temp); |
| 2213 | |
| 2214 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
| 2215 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; |
| 2216 | |
| 2217 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { |
| 2218 | case DP_TRAINING_PATTERN_DISABLE: |
| 2219 | *DP |= DP_LINK_TRAIN_OFF_CPT; |
| 2220 | break; |
| 2221 | case DP_TRAINING_PATTERN_1: |
| 2222 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; |
| 2223 | break; |
| 2224 | case DP_TRAINING_PATTERN_2: |
| 2225 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
| 2226 | break; |
| 2227 | case DP_TRAINING_PATTERN_3: |
| 2228 | DRM_ERROR("DP training pattern 3 not supported\n"); |
| 2229 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
| 2230 | break; |
| 2231 | } |
| 2232 | |
| 2233 | } else { |
| 2234 | if (IS_CHERRYVIEW(dev)) |
| 2235 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; |
| 2236 | else |
| 2237 | *DP &= ~DP_LINK_TRAIN_MASK; |
| 2238 | |
| 2239 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { |
| 2240 | case DP_TRAINING_PATTERN_DISABLE: |
| 2241 | *DP |= DP_LINK_TRAIN_OFF; |
| 2242 | break; |
| 2243 | case DP_TRAINING_PATTERN_1: |
| 2244 | *DP |= DP_LINK_TRAIN_PAT_1; |
| 2245 | break; |
| 2246 | case DP_TRAINING_PATTERN_2: |
| 2247 | *DP |= DP_LINK_TRAIN_PAT_2; |
| 2248 | break; |
| 2249 | case DP_TRAINING_PATTERN_3: |
| 2250 | if (IS_CHERRYVIEW(dev)) { |
| 2251 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; |
| 2252 | } else { |
| 2253 | DRM_ERROR("DP training pattern 3 not supported\n"); |
| 2254 | *DP |= DP_LINK_TRAIN_PAT_2; |
| 2255 | } |
| 2256 | break; |
| 2257 | } |
| 2258 | } |
| 2259 | } |
| 2260 | |
| 2261 | static void intel_dp_enable_port(struct intel_dp *intel_dp) |
| 2262 | { |
| 2263 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 2264 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2265 | |
Ville Syrjälä | 7b13b58 | 2014-08-18 22:16:08 +0300 | [diff] [blame] | 2266 | /* enable with pattern 1 (as per spec) */ |
| 2267 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
| 2268 | DP_TRAINING_PATTERN_1); |
| 2269 | |
| 2270 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); |
| 2271 | POSTING_READ(intel_dp->output_reg); |
Ville Syrjälä | 7b713f5 | 2014-10-16 21:27:35 +0300 | [diff] [blame] | 2272 | |
| 2273 | /* |
| 2274 | * Magic for VLV/CHV. We _must_ first set up the register |
| 2275 | * without actually enabling the port, and then do another |
| 2276 | * write to enable the port. Otherwise link training will |
| 2277 | * fail when the power sequencer is freshly used for this port. |
| 2278 | */ |
| 2279 | intel_dp->DP |= DP_PORT_EN; |
| 2280 | |
| 2281 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); |
| 2282 | POSTING_READ(intel_dp->output_reg); |
Ville Syrjälä | 7b13b58 | 2014-08-18 22:16:08 +0300 | [diff] [blame] | 2283 | } |
| 2284 | |
Daniel Vetter | e8cb455 | 2012-07-01 13:05:48 +0200 | [diff] [blame] | 2285 | static void intel_enable_dp(struct intel_encoder *encoder) |
Jesse Barnes | d240f20 | 2010-08-13 15:43:26 -0700 | [diff] [blame] | 2286 | { |
Daniel Vetter | e8cb455 | 2012-07-01 13:05:48 +0200 | [diff] [blame] | 2287 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
| 2288 | struct drm_device *dev = encoder->base.dev; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2289 | struct drm_i915_private *dev_priv = dev->dev_private; |
Jani Nikula | c1dec79 | 2014-10-27 16:26:56 +0200 | [diff] [blame] | 2290 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 2291 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2292 | |
Daniel Vetter | 0c33d8d | 2012-09-06 22:15:43 +0200 | [diff] [blame] | 2293 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
| 2294 | return; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2295 | |
Ville Syrjälä | 093e3f1 | 2014-10-16 21:27:33 +0300 | [diff] [blame] | 2296 | pps_lock(intel_dp); |
| 2297 | |
| 2298 | if (IS_VALLEYVIEW(dev)) |
| 2299 | vlv_init_panel_power_sequencer(intel_dp); |
| 2300 | |
Ville Syrjälä | 7b13b58 | 2014-08-18 22:16:08 +0300 | [diff] [blame] | 2301 | intel_dp_enable_port(intel_dp); |
Ville Syrjälä | 093e3f1 | 2014-10-16 21:27:33 +0300 | [diff] [blame] | 2302 | |
| 2303 | edp_panel_vdd_on(intel_dp); |
| 2304 | edp_panel_on(intel_dp); |
| 2305 | edp_panel_vdd_off(intel_dp, true); |
| 2306 | |
| 2307 | pps_unlock(intel_dp); |
| 2308 | |
Ville Syrjälä | 61234fa | 2014-10-16 21:27:34 +0300 | [diff] [blame] | 2309 | if (IS_VALLEYVIEW(dev)) |
| 2310 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp)); |
| 2311 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2312 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
| 2313 | intel_dp_start_link_train(intel_dp); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2314 | intel_dp_complete_link_train(intel_dp); |
Imre Deak | 3ab9c63 | 2013-05-03 12:57:41 +0300 | [diff] [blame] | 2315 | intel_dp_stop_link_train(intel_dp); |
Jani Nikula | c1dec79 | 2014-10-27 16:26:56 +0200 | [diff] [blame] | 2316 | |
Ander Conselvan de Oliveira | 6e3c971 | 2015-01-15 14:55:25 +0200 | [diff] [blame] | 2317 | if (crtc->config->has_audio) { |
Jani Nikula | c1dec79 | 2014-10-27 16:26:56 +0200 | [diff] [blame] | 2318 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
| 2319 | pipe_name(crtc->pipe)); |
| 2320 | intel_audio_codec_enable(encoder); |
| 2321 | } |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2322 | } |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2323 | |
Jani Nikula | ecff4f3 | 2013-09-06 07:38:29 +0300 | [diff] [blame] | 2324 | static void g4x_enable_dp(struct intel_encoder *encoder) |
| 2325 | { |
Jani Nikula | 828f5c6 | 2013-09-05 16:44:45 +0300 | [diff] [blame] | 2326 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
| 2327 | |
Jani Nikula | ecff4f3 | 2013-09-06 07:38:29 +0300 | [diff] [blame] | 2328 | intel_enable_dp(encoder); |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 2329 | intel_edp_backlight_on(intel_dp); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2330 | } |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2331 | |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2332 | static void vlv_enable_dp(struct intel_encoder *encoder) |
| 2333 | { |
Jani Nikula | 828f5c6 | 2013-09-05 16:44:45 +0300 | [diff] [blame] | 2334 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
| 2335 | |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 2336 | intel_edp_backlight_on(intel_dp); |
Rodrigo Vivi | b32c6f4 | 2014-11-20 03:44:37 -0800 | [diff] [blame] | 2337 | intel_psr_enable(intel_dp); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2338 | } |
| 2339 | |
Jani Nikula | ecff4f3 | 2013-09-06 07:38:29 +0300 | [diff] [blame] | 2340 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2341 | { |
Daniel Vetter | 2bd2ad6 | 2012-09-06 22:15:41 +0200 | [diff] [blame] | 2342 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 2343 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2344 | |
Daniel Vetter | 8ac33ed | 2014-04-24 23:54:54 +0200 | [diff] [blame] | 2345 | intel_dp_prepare(encoder); |
| 2346 | |
Daniel Vetter | d41f1ef | 2014-04-24 23:54:53 +0200 | [diff] [blame] | 2347 | /* Only ilk+ has port A */ |
| 2348 | if (dport->port == PORT_A) { |
| 2349 | ironlake_set_pll_cpu_edp(intel_dp); |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2350 | ironlake_edp_pll_on(intel_dp); |
Daniel Vetter | d41f1ef | 2014-04-24 23:54:53 +0200 | [diff] [blame] | 2351 | } |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2352 | } |
| 2353 | |
Ville Syrjälä | 83b8459 | 2014-10-16 21:29:51 +0300 | [diff] [blame] | 2354 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
| 2355 | { |
| 2356 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 2357 | struct drm_i915_private *dev_priv = intel_dig_port->base.base.dev->dev_private; |
| 2358 | enum pipe pipe = intel_dp->pps_pipe; |
| 2359 | int pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); |
| 2360 | |
| 2361 | edp_panel_vdd_off_sync(intel_dp); |
| 2362 | |
| 2363 | /* |
| 2364 | * VLV seems to get confused when multiple power seqeuencers |
| 2365 | * have the same port selected (even if only one has power/vdd |
| 2366 | * enabled). The failure manifests as vlv_wait_port_ready() failing |
| 2367 | * CHV on the other hand doesn't seem to mind having the same port |
| 2368 | * selected in multiple power seqeuencers, but let's clear the |
| 2369 | * port select always when logically disconnecting a power sequencer |
| 2370 | * from a port. |
| 2371 | */ |
| 2372 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", |
| 2373 | pipe_name(pipe), port_name(intel_dig_port->port)); |
| 2374 | I915_WRITE(pp_on_reg, 0); |
| 2375 | POSTING_READ(pp_on_reg); |
| 2376 | |
| 2377 | intel_dp->pps_pipe = INVALID_PIPE; |
| 2378 | } |
| 2379 | |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2380 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
| 2381 | enum pipe pipe) |
| 2382 | { |
| 2383 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2384 | struct intel_encoder *encoder; |
| 2385 | |
| 2386 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 2387 | |
Ville Syrjälä | ac3c12e | 2014-10-16 21:29:56 +0300 | [diff] [blame] | 2388 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
| 2389 | return; |
| 2390 | |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2391 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
| 2392 | base.head) { |
| 2393 | struct intel_dp *intel_dp; |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 2394 | enum port port; |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2395 | |
| 2396 | if (encoder->type != INTEL_OUTPUT_EDP) |
| 2397 | continue; |
| 2398 | |
| 2399 | intel_dp = enc_to_intel_dp(&encoder->base); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 2400 | port = dp_to_dig_port(intel_dp)->port; |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2401 | |
| 2402 | if (intel_dp->pps_pipe != pipe) |
| 2403 | continue; |
| 2404 | |
| 2405 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 2406 | pipe_name(pipe), port_name(port)); |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2407 | |
Ville Syrjälä | 034e43c | 2014-10-16 21:27:28 +0300 | [diff] [blame] | 2408 | WARN(encoder->connectors_active, |
| 2409 | "stealing pipe %c power sequencer from active eDP port %c\n", |
| 2410 | pipe_name(pipe), port_name(port)); |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2411 | |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2412 | /* make sure vdd is off before we steal it */ |
Ville Syrjälä | 83b8459 | 2014-10-16 21:29:51 +0300 | [diff] [blame] | 2413 | vlv_detach_power_sequencer(intel_dp); |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2414 | } |
| 2415 | } |
| 2416 | |
| 2417 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) |
| 2418 | { |
| 2419 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 2420 | struct intel_encoder *encoder = &intel_dig_port->base; |
| 2421 | struct drm_device *dev = encoder->base.dev; |
| 2422 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2423 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2424 | |
| 2425 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 2426 | |
Ville Syrjälä | 093e3f1 | 2014-10-16 21:27:33 +0300 | [diff] [blame] | 2427 | if (!is_edp(intel_dp)) |
| 2428 | return; |
| 2429 | |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2430 | if (intel_dp->pps_pipe == crtc->pipe) |
| 2431 | return; |
| 2432 | |
| 2433 | /* |
| 2434 | * If another power sequencer was being used on this |
| 2435 | * port previously make sure to turn off vdd there while |
| 2436 | * we still have control of it. |
| 2437 | */ |
| 2438 | if (intel_dp->pps_pipe != INVALID_PIPE) |
Ville Syrjälä | 83b8459 | 2014-10-16 21:29:51 +0300 | [diff] [blame] | 2439 | vlv_detach_power_sequencer(intel_dp); |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2440 | |
| 2441 | /* |
| 2442 | * We may be stealing the power |
| 2443 | * sequencer from another port. |
| 2444 | */ |
| 2445 | vlv_steal_power_sequencer(dev, crtc->pipe); |
| 2446 | |
| 2447 | /* now it's all ours */ |
| 2448 | intel_dp->pps_pipe = crtc->pipe; |
| 2449 | |
| 2450 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", |
| 2451 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); |
| 2452 | |
| 2453 | /* init power sequencer on this pipe and port */ |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 2454 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
| 2455 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 2456 | } |
| 2457 | |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2458 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
| 2459 | { |
| 2460 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
| 2461 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
Jesse Barnes | b263401 | 2013-03-28 09:55:40 -0700 | [diff] [blame] | 2462 | struct drm_device *dev = encoder->base.dev; |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2463 | struct drm_i915_private *dev_priv = dev->dev_private; |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2464 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
Chon Ming Lee | e4607fc | 2013-11-06 14:36:35 +0800 | [diff] [blame] | 2465 | enum dpio_channel port = vlv_dport_to_channel(dport); |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2466 | int pipe = intel_crtc->pipe; |
| 2467 | u32 val; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2468 | |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2469 | mutex_lock(&dev_priv->dpio_lock); |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2470 | |
Chon Ming Lee | ab3c759 | 2013-11-07 10:43:30 +0800 | [diff] [blame] | 2471 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2472 | val = 0; |
| 2473 | if (pipe) |
| 2474 | val |= (1<<21); |
| 2475 | else |
| 2476 | val &= ~(1<<21); |
| 2477 | val |= 0x001000c4; |
Chon Ming Lee | ab3c759 | 2013-11-07 10:43:30 +0800 | [diff] [blame] | 2478 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
| 2479 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); |
| 2480 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2481 | |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2482 | mutex_unlock(&dev_priv->dpio_lock); |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2483 | |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 2484 | intel_enable_dp(encoder); |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2485 | } |
| 2486 | |
Jani Nikula | ecff4f3 | 2013-09-06 07:38:29 +0300 | [diff] [blame] | 2487 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2488 | { |
| 2489 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); |
| 2490 | struct drm_device *dev = encoder->base.dev; |
| 2491 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chon Ming Lee | 5e69f97 | 2013-09-05 20:41:49 +0800 | [diff] [blame] | 2492 | struct intel_crtc *intel_crtc = |
| 2493 | to_intel_crtc(encoder->base.crtc); |
Chon Ming Lee | e4607fc | 2013-11-06 14:36:35 +0800 | [diff] [blame] | 2494 | enum dpio_channel port = vlv_dport_to_channel(dport); |
Chon Ming Lee | 5e69f97 | 2013-09-05 20:41:49 +0800 | [diff] [blame] | 2495 | int pipe = intel_crtc->pipe; |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2496 | |
Daniel Vetter | 8ac33ed | 2014-04-24 23:54:54 +0200 | [diff] [blame] | 2497 | intel_dp_prepare(encoder); |
| 2498 | |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2499 | /* Program Tx lane resets to default */ |
Chris Wilson | 0980a60 | 2013-07-26 19:57:35 +0100 | [diff] [blame] | 2500 | mutex_lock(&dev_priv->dpio_lock); |
Chon Ming Lee | ab3c759 | 2013-11-07 10:43:30 +0800 | [diff] [blame] | 2501 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2502 | DPIO_PCS_TX_LANE2_RESET | |
| 2503 | DPIO_PCS_TX_LANE1_RESET); |
Chon Ming Lee | ab3c759 | 2013-11-07 10:43:30 +0800 | [diff] [blame] | 2504 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
Jesse Barnes | 89b667f | 2013-04-18 14:51:36 -0700 | [diff] [blame] | 2505 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
| 2506 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | |
| 2507 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | |
| 2508 | DPIO_PCS_CLK_SOFT_RESET); |
| 2509 | |
| 2510 | /* Fix up inter-pair skew failure */ |
Chon Ming Lee | ab3c759 | 2013-11-07 10:43:30 +0800 | [diff] [blame] | 2511 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
| 2512 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); |
| 2513 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); |
Chris Wilson | 0980a60 | 2013-07-26 19:57:35 +0100 | [diff] [blame] | 2514 | mutex_unlock(&dev_priv->dpio_lock); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2515 | } |
| 2516 | |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2517 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
| 2518 | { |
| 2519 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
| 2520 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
| 2521 | struct drm_device *dev = encoder->base.dev; |
| 2522 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2523 | struct intel_crtc *intel_crtc = |
| 2524 | to_intel_crtc(encoder->base.crtc); |
| 2525 | enum dpio_channel ch = vlv_dport_to_channel(dport); |
| 2526 | int pipe = intel_crtc->pipe; |
| 2527 | int data, i; |
Ville Syrjälä | 949c1d4 | 2014-04-09 13:28:58 +0300 | [diff] [blame] | 2528 | u32 val; |
| 2529 | |
| 2530 | mutex_lock(&dev_priv->dpio_lock); |
| 2531 | |
Ville Syrjälä | 570e2a7 | 2014-08-18 14:42:46 +0300 | [diff] [blame] | 2532 | /* allow hardware to manage TX FIFO reset source */ |
| 2533 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); |
| 2534 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; |
| 2535 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); |
| 2536 | |
| 2537 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); |
| 2538 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; |
| 2539 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); |
| 2540 | |
Ville Syrjälä | 949c1d4 | 2014-04-09 13:28:58 +0300 | [diff] [blame] | 2541 | /* Deassert soft data lane reset*/ |
Ville Syrjälä | 97fd4d5 | 2014-04-09 13:29:02 +0300 | [diff] [blame] | 2542 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
Ville Syrjälä | d2152b2 | 2014-04-28 14:15:24 +0300 | [diff] [blame] | 2543 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
Ville Syrjälä | 97fd4d5 | 2014-04-09 13:29:02 +0300 | [diff] [blame] | 2544 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
Ville Syrjälä | d2152b2 | 2014-04-28 14:15:24 +0300 | [diff] [blame] | 2545 | |
Ville Syrjälä | 97fd4d5 | 2014-04-09 13:29:02 +0300 | [diff] [blame] | 2546 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
| 2547 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
| 2548 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); |
| 2549 | |
| 2550 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); |
Ville Syrjälä | 949c1d4 | 2014-04-09 13:28:58 +0300 | [diff] [blame] | 2551 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
Ville Syrjälä | 97fd4d5 | 2014-04-09 13:29:02 +0300 | [diff] [blame] | 2552 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); |
| 2553 | |
| 2554 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
| 2555 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
| 2556 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2557 | |
| 2558 | /* Program Tx lane latency optimal setting*/ |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2559 | for (i = 0; i < 4; i++) { |
| 2560 | /* Set the latency optimal bit */ |
| 2561 | data = (i == 1) ? 0x0 : 0x6; |
| 2562 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i), |
| 2563 | data << DPIO_FRC_LATENCY_SHFIT); |
| 2564 | |
| 2565 | /* Set the upar bit */ |
| 2566 | data = (i == 1) ? 0x0 : 0x1; |
| 2567 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), |
| 2568 | data << DPIO_UPAR_SHIFT); |
| 2569 | } |
| 2570 | |
| 2571 | /* Data lane stagger programming */ |
| 2572 | /* FIXME: Fix up value only after power analysis */ |
| 2573 | |
| 2574 | mutex_unlock(&dev_priv->dpio_lock); |
| 2575 | |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2576 | intel_enable_dp(encoder); |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2577 | } |
| 2578 | |
Ville Syrjälä | 9197c88 | 2014-04-09 13:29:05 +0300 | [diff] [blame] | 2579 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
| 2580 | { |
| 2581 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); |
| 2582 | struct drm_device *dev = encoder->base.dev; |
| 2583 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2584 | struct intel_crtc *intel_crtc = |
| 2585 | to_intel_crtc(encoder->base.crtc); |
| 2586 | enum dpio_channel ch = vlv_dport_to_channel(dport); |
| 2587 | enum pipe pipe = intel_crtc->pipe; |
| 2588 | u32 val; |
| 2589 | |
Ville Syrjälä | 625695f | 2014-06-28 02:04:02 +0300 | [diff] [blame] | 2590 | intel_dp_prepare(encoder); |
| 2591 | |
Ville Syrjälä | 9197c88 | 2014-04-09 13:29:05 +0300 | [diff] [blame] | 2592 | mutex_lock(&dev_priv->dpio_lock); |
| 2593 | |
Ville Syrjälä | b9e5ac3 | 2014-05-27 16:30:18 +0300 | [diff] [blame] | 2594 | /* program left/right clock distribution */ |
| 2595 | if (pipe != PIPE_B) { |
| 2596 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); |
| 2597 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); |
| 2598 | if (ch == DPIO_CH0) |
| 2599 | val |= CHV_BUFLEFTENA1_FORCE; |
| 2600 | if (ch == DPIO_CH1) |
| 2601 | val |= CHV_BUFRIGHTENA1_FORCE; |
| 2602 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); |
| 2603 | } else { |
| 2604 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); |
| 2605 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); |
| 2606 | if (ch == DPIO_CH0) |
| 2607 | val |= CHV_BUFLEFTENA2_FORCE; |
| 2608 | if (ch == DPIO_CH1) |
| 2609 | val |= CHV_BUFRIGHTENA2_FORCE; |
| 2610 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); |
| 2611 | } |
| 2612 | |
Ville Syrjälä | 9197c88 | 2014-04-09 13:29:05 +0300 | [diff] [blame] | 2613 | /* program clock channel usage */ |
| 2614 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); |
| 2615 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; |
| 2616 | if (pipe != PIPE_B) |
| 2617 | val &= ~CHV_PCS_USEDCLKCHANNEL; |
| 2618 | else |
| 2619 | val |= CHV_PCS_USEDCLKCHANNEL; |
| 2620 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); |
| 2621 | |
| 2622 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); |
| 2623 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; |
| 2624 | if (pipe != PIPE_B) |
| 2625 | val &= ~CHV_PCS_USEDCLKCHANNEL; |
| 2626 | else |
| 2627 | val |= CHV_PCS_USEDCLKCHANNEL; |
| 2628 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); |
| 2629 | |
| 2630 | /* |
| 2631 | * This a a bit weird since generally CL |
| 2632 | * matches the pipe, but here we need to |
| 2633 | * pick the CL based on the port. |
| 2634 | */ |
| 2635 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); |
| 2636 | if (pipe != PIPE_B) |
| 2637 | val &= ~CHV_CMN_USEDCLKCHANNEL; |
| 2638 | else |
| 2639 | val |= CHV_CMN_USEDCLKCHANNEL; |
| 2640 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); |
| 2641 | |
| 2642 | mutex_unlock(&dev_priv->dpio_lock); |
| 2643 | } |
| 2644 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2645 | /* |
Jesse Barnes | df0c237 | 2011-07-07 11:11:02 -0700 | [diff] [blame] | 2646 | * Native read with retry for link status and receiver capability reads for |
| 2647 | * cases where the sink may still be asleep. |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 2648 | * |
| 2649 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also |
| 2650 | * supposed to retry 3 times per the spec. |
Jesse Barnes | df0c237 | 2011-07-07 11:11:02 -0700 | [diff] [blame] | 2651 | */ |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 2652 | static ssize_t |
| 2653 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, |
| 2654 | void *buffer, size_t size) |
Jesse Barnes | df0c237 | 2011-07-07 11:11:02 -0700 | [diff] [blame] | 2655 | { |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 2656 | ssize_t ret; |
| 2657 | int i; |
Jesse Barnes | df0c237 | 2011-07-07 11:11:02 -0700 | [diff] [blame] | 2658 | |
Ville Syrjälä | f6a1906 | 2014-10-16 20:46:09 +0300 | [diff] [blame] | 2659 | /* |
| 2660 | * Sometime we just get the same incorrect byte repeated |
| 2661 | * over the entire buffer. Doing just one throw away read |
| 2662 | * initially seems to "solve" it. |
| 2663 | */ |
| 2664 | drm_dp_dpcd_read(aux, DP_DPCD_REV, buffer, 1); |
| 2665 | |
Jesse Barnes | df0c237 | 2011-07-07 11:11:02 -0700 | [diff] [blame] | 2666 | for (i = 0; i < 3; i++) { |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 2667 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
| 2668 | if (ret == size) |
| 2669 | return ret; |
Jesse Barnes | df0c237 | 2011-07-07 11:11:02 -0700 | [diff] [blame] | 2670 | msleep(1); |
| 2671 | } |
| 2672 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 2673 | return ret; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2674 | } |
| 2675 | |
| 2676 | /* |
| 2677 | * Fetch AUX CH registers 0x202 - 0x207 which contain |
| 2678 | * link status information |
| 2679 | */ |
| 2680 | static bool |
Keith Packard | 93f62da | 2011-11-01 19:45:03 -0700 | [diff] [blame] | 2681 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2682 | { |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 2683 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
| 2684 | DP_LANE0_1_STATUS, |
| 2685 | link_status, |
| 2686 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2687 | } |
| 2688 | |
Paulo Zanoni | 1100244 | 2014-06-13 18:45:41 -0300 | [diff] [blame] | 2689 | /* These are source-specific values. */ |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2690 | static uint8_t |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 2691 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2692 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 2693 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 2694 | enum port port = dp_to_dig_port(intel_dp)->port; |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 2695 | |
Damien Lespiau | 5a9d1f1 | 2013-12-03 13:56:26 +0000 | [diff] [blame] | 2696 | if (INTEL_INFO(dev)->gen >= 9) |
| 2697 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
| 2698 | else if (IS_VALLEYVIEW(dev)) |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2699 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 2700 | else if (IS_GEN7(dev) && port == PORT_A) |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2701 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 2702 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2703 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 2704 | else |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2705 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 2706 | } |
| 2707 | |
| 2708 | static uint8_t |
| 2709 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) |
| 2710 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 2711 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 2712 | enum port port = dp_to_dig_port(intel_dp)->port; |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 2713 | |
Damien Lespiau | 5a9d1f1 | 2013-12-03 13:56:26 +0000 | [diff] [blame] | 2714 | if (INTEL_INFO(dev)->gen >= 9) { |
| 2715 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
| 2716 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
| 2717 | return DP_TRAIN_PRE_EMPH_LEVEL_3; |
| 2718 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
| 2719 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
| 2720 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
| 2721 | return DP_TRAIN_PRE_EMPH_LEVEL_1; |
| 2722 | default: |
| 2723 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
| 2724 | } |
| 2725 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
Paulo Zanoni | d6c0d72 | 2012-10-15 15:51:34 -0300 | [diff] [blame] | 2726 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2727 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
| 2728 | return DP_TRAIN_PRE_EMPH_LEVEL_3; |
| 2729 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
| 2730 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
| 2731 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
| 2732 | return DP_TRAIN_PRE_EMPH_LEVEL_1; |
| 2733 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
Paulo Zanoni | d6c0d72 | 2012-10-15 15:51:34 -0300 | [diff] [blame] | 2734 | default: |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2735 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
Paulo Zanoni | d6c0d72 | 2012-10-15 15:51:34 -0300 | [diff] [blame] | 2736 | } |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2737 | } else if (IS_VALLEYVIEW(dev)) { |
| 2738 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2739 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
| 2740 | return DP_TRAIN_PRE_EMPH_LEVEL_3; |
| 2741 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
| 2742 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
| 2743 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
| 2744 | return DP_TRAIN_PRE_EMPH_LEVEL_1; |
| 2745 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2746 | default: |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2747 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2748 | } |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 2749 | } else if (IS_GEN7(dev) && port == PORT_A) { |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 2750 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2751 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
| 2752 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
| 2753 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
| 2754 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
| 2755 | return DP_TRAIN_PRE_EMPH_LEVEL_1; |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 2756 | default: |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2757 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 2758 | } |
| 2759 | } else { |
| 2760 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2761 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
| 2762 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
| 2763 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
| 2764 | return DP_TRAIN_PRE_EMPH_LEVEL_2; |
| 2765 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
| 2766 | return DP_TRAIN_PRE_EMPH_LEVEL_1; |
| 2767 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 2768 | default: |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2769 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 2770 | } |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 2771 | } |
| 2772 | } |
| 2773 | |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2774 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
| 2775 | { |
| 2776 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 2777 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2778 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
Chon Ming Lee | 5e69f97 | 2013-09-05 20:41:49 +0800 | [diff] [blame] | 2779 | struct intel_crtc *intel_crtc = |
| 2780 | to_intel_crtc(dport->base.base.crtc); |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2781 | unsigned long demph_reg_value, preemph_reg_value, |
| 2782 | uniqtranscale_reg_value; |
| 2783 | uint8_t train_set = intel_dp->train_set[0]; |
Chon Ming Lee | e4607fc | 2013-11-06 14:36:35 +0800 | [diff] [blame] | 2784 | enum dpio_channel port = vlv_dport_to_channel(dport); |
Chon Ming Lee | 5e69f97 | 2013-09-05 20:41:49 +0800 | [diff] [blame] | 2785 | int pipe = intel_crtc->pipe; |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2786 | |
| 2787 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2788 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2789 | preemph_reg_value = 0x0004000; |
| 2790 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2791 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2792 | demph_reg_value = 0x2B405555; |
| 2793 | uniqtranscale_reg_value = 0x552AB83A; |
| 2794 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2795 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2796 | demph_reg_value = 0x2B404040; |
| 2797 | uniqtranscale_reg_value = 0x5548B83A; |
| 2798 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2799 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2800 | demph_reg_value = 0x2B245555; |
| 2801 | uniqtranscale_reg_value = 0x5560B83A; |
| 2802 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2803 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2804 | demph_reg_value = 0x2B405555; |
| 2805 | uniqtranscale_reg_value = 0x5598DA3A; |
| 2806 | break; |
| 2807 | default: |
| 2808 | return 0; |
| 2809 | } |
| 2810 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2811 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2812 | preemph_reg_value = 0x0002000; |
| 2813 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2814 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2815 | demph_reg_value = 0x2B404040; |
| 2816 | uniqtranscale_reg_value = 0x5552B83A; |
| 2817 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2818 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2819 | demph_reg_value = 0x2B404848; |
| 2820 | uniqtranscale_reg_value = 0x5580B83A; |
| 2821 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2822 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2823 | demph_reg_value = 0x2B404040; |
| 2824 | uniqtranscale_reg_value = 0x55ADDA3A; |
| 2825 | break; |
| 2826 | default: |
| 2827 | return 0; |
| 2828 | } |
| 2829 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2830 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2831 | preemph_reg_value = 0x0000000; |
| 2832 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2833 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2834 | demph_reg_value = 0x2B305555; |
| 2835 | uniqtranscale_reg_value = 0x5570B83A; |
| 2836 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2837 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2838 | demph_reg_value = 0x2B2B4040; |
| 2839 | uniqtranscale_reg_value = 0x55ADDA3A; |
| 2840 | break; |
| 2841 | default: |
| 2842 | return 0; |
| 2843 | } |
| 2844 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2845 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2846 | preemph_reg_value = 0x0006000; |
| 2847 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2848 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2849 | demph_reg_value = 0x1B405555; |
| 2850 | uniqtranscale_reg_value = 0x55ADDA3A; |
| 2851 | break; |
| 2852 | default: |
| 2853 | return 0; |
| 2854 | } |
| 2855 | break; |
| 2856 | default: |
| 2857 | return 0; |
| 2858 | } |
| 2859 | |
Chris Wilson | 0980a60 | 2013-07-26 19:57:35 +0100 | [diff] [blame] | 2860 | mutex_lock(&dev_priv->dpio_lock); |
Chon Ming Lee | ab3c759 | 2013-11-07 10:43:30 +0800 | [diff] [blame] | 2861 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
| 2862 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); |
| 2863 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2864 | uniqtranscale_reg_value); |
Chon Ming Lee | ab3c759 | 2013-11-07 10:43:30 +0800 | [diff] [blame] | 2865 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
| 2866 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); |
| 2867 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); |
| 2868 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); |
Chris Wilson | 0980a60 | 2013-07-26 19:57:35 +0100 | [diff] [blame] | 2869 | mutex_unlock(&dev_priv->dpio_lock); |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 2870 | |
| 2871 | return 0; |
| 2872 | } |
| 2873 | |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2874 | static uint32_t intel_chv_signal_levels(struct intel_dp *intel_dp) |
| 2875 | { |
| 2876 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 2877 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2878 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
| 2879 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); |
Ville Syrjälä | f72df8d | 2014-04-09 13:29:03 +0300 | [diff] [blame] | 2880 | u32 deemph_reg_value, margin_reg_value, val; |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2881 | uint8_t train_set = intel_dp->train_set[0]; |
| 2882 | enum dpio_channel ch = vlv_dport_to_channel(dport); |
Ville Syrjälä | f72df8d | 2014-04-09 13:29:03 +0300 | [diff] [blame] | 2883 | enum pipe pipe = intel_crtc->pipe; |
| 2884 | int i; |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2885 | |
| 2886 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2887 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2888 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2889 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2890 | deemph_reg_value = 128; |
| 2891 | margin_reg_value = 52; |
| 2892 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2893 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2894 | deemph_reg_value = 128; |
| 2895 | margin_reg_value = 77; |
| 2896 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2897 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2898 | deemph_reg_value = 128; |
| 2899 | margin_reg_value = 102; |
| 2900 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2901 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2902 | deemph_reg_value = 128; |
| 2903 | margin_reg_value = 154; |
| 2904 | /* FIXME extra to set for 1200 */ |
| 2905 | break; |
| 2906 | default: |
| 2907 | return 0; |
| 2908 | } |
| 2909 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2910 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2911 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2912 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2913 | deemph_reg_value = 85; |
| 2914 | margin_reg_value = 78; |
| 2915 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2916 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2917 | deemph_reg_value = 85; |
| 2918 | margin_reg_value = 116; |
| 2919 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2920 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2921 | deemph_reg_value = 85; |
| 2922 | margin_reg_value = 154; |
| 2923 | break; |
| 2924 | default: |
| 2925 | return 0; |
| 2926 | } |
| 2927 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2928 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2929 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2930 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2931 | deemph_reg_value = 64; |
| 2932 | margin_reg_value = 104; |
| 2933 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2934 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2935 | deemph_reg_value = 64; |
| 2936 | margin_reg_value = 154; |
| 2937 | break; |
| 2938 | default: |
| 2939 | return 0; |
| 2940 | } |
| 2941 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2942 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2943 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 2944 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2945 | deemph_reg_value = 43; |
| 2946 | margin_reg_value = 154; |
| 2947 | break; |
| 2948 | default: |
| 2949 | return 0; |
| 2950 | } |
| 2951 | break; |
| 2952 | default: |
| 2953 | return 0; |
| 2954 | } |
| 2955 | |
| 2956 | mutex_lock(&dev_priv->dpio_lock); |
| 2957 | |
| 2958 | /* Clear calc init */ |
Ville Syrjälä | 1966e59 | 2014-04-09 13:29:04 +0300 | [diff] [blame] | 2959 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
| 2960 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); |
Ville Syrjälä | a02ef3c | 2014-08-18 14:42:45 +0300 | [diff] [blame] | 2961 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
| 2962 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; |
Ville Syrjälä | 1966e59 | 2014-04-09 13:29:04 +0300 | [diff] [blame] | 2963 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
| 2964 | |
| 2965 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); |
| 2966 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); |
Ville Syrjälä | a02ef3c | 2014-08-18 14:42:45 +0300 | [diff] [blame] | 2967 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
| 2968 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; |
Ville Syrjälä | 1966e59 | 2014-04-09 13:29:04 +0300 | [diff] [blame] | 2969 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2970 | |
Ville Syrjälä | a02ef3c | 2014-08-18 14:42:45 +0300 | [diff] [blame] | 2971 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch)); |
| 2972 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); |
| 2973 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; |
| 2974 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val); |
| 2975 | |
| 2976 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch)); |
| 2977 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); |
| 2978 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; |
| 2979 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val); |
| 2980 | |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2981 | /* Program swing deemph */ |
Ville Syrjälä | f72df8d | 2014-04-09 13:29:03 +0300 | [diff] [blame] | 2982 | for (i = 0; i < 4; i++) { |
| 2983 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); |
| 2984 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; |
| 2985 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; |
| 2986 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); |
| 2987 | } |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2988 | |
| 2989 | /* Program swing margin */ |
Ville Syrjälä | f72df8d | 2014-04-09 13:29:03 +0300 | [diff] [blame] | 2990 | for (i = 0; i < 4; i++) { |
| 2991 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); |
Ville Syrjälä | 1fb4450 | 2014-06-28 02:04:03 +0300 | [diff] [blame] | 2992 | val &= ~DPIO_SWING_MARGIN000_MASK; |
| 2993 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; |
Ville Syrjälä | f72df8d | 2014-04-09 13:29:03 +0300 | [diff] [blame] | 2994 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
| 2995 | } |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 2996 | |
| 2997 | /* Disable unique transition scale */ |
Ville Syrjälä | f72df8d | 2014-04-09 13:29:03 +0300 | [diff] [blame] | 2998 | for (i = 0; i < 4; i++) { |
| 2999 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); |
| 3000 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; |
| 3001 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); |
| 3002 | } |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 3003 | |
| 3004 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3005 | == DP_TRAIN_PRE_EMPH_LEVEL_0) && |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 3006 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3007 | == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)) { |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 3008 | |
| 3009 | /* |
| 3010 | * The document said it needs to set bit 27 for ch0 and bit 26 |
| 3011 | * for ch1. Might be a typo in the doc. |
| 3012 | * For now, for this unique transition scale selection, set bit |
| 3013 | * 27 for ch0 and ch1. |
| 3014 | */ |
Ville Syrjälä | f72df8d | 2014-04-09 13:29:03 +0300 | [diff] [blame] | 3015 | for (i = 0; i < 4; i++) { |
| 3016 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); |
| 3017 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; |
| 3018 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); |
| 3019 | } |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 3020 | |
Ville Syrjälä | f72df8d | 2014-04-09 13:29:03 +0300 | [diff] [blame] | 3021 | for (i = 0; i < 4; i++) { |
| 3022 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); |
| 3023 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); |
| 3024 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); |
| 3025 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
| 3026 | } |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 3027 | } |
| 3028 | |
| 3029 | /* Start swing calculation */ |
Ville Syrjälä | 1966e59 | 2014-04-09 13:29:04 +0300 | [diff] [blame] | 3030 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
| 3031 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; |
| 3032 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
| 3033 | |
| 3034 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); |
| 3035 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; |
| 3036 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 3037 | |
| 3038 | /* LRC Bypass */ |
| 3039 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); |
| 3040 | val |= DPIO_LRC_BYPASS; |
| 3041 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); |
| 3042 | |
| 3043 | mutex_unlock(&dev_priv->dpio_lock); |
| 3044 | |
| 3045 | return 0; |
| 3046 | } |
| 3047 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3048 | static void |
Jani Nikula | 0301b3a | 2013-10-15 09:36:08 +0300 | [diff] [blame] | 3049 | intel_get_adjust_train(struct intel_dp *intel_dp, |
| 3050 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3051 | { |
| 3052 | uint8_t v = 0; |
| 3053 | uint8_t p = 0; |
| 3054 | int lane; |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3055 | uint8_t voltage_max; |
| 3056 | uint8_t preemph_max; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3057 | |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3058 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
Daniel Vetter | 0f037bd | 2012-10-18 10:15:27 +0200 | [diff] [blame] | 3059 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
| 3060 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3061 | |
| 3062 | if (this_v > v) |
| 3063 | v = this_v; |
| 3064 | if (this_p > p) |
| 3065 | p = this_p; |
| 3066 | } |
| 3067 | |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3068 | voltage_max = intel_dp_voltage_max(intel_dp); |
Keith Packard | 417e822 | 2011-11-01 19:54:11 -0700 | [diff] [blame] | 3069 | if (v >= voltage_max) |
| 3070 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3071 | |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3072 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
| 3073 | if (p >= preemph_max) |
| 3074 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3075 | |
| 3076 | for (lane = 0; lane < 4; lane++) |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3077 | intel_dp->train_set[lane] = v | p; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3078 | } |
| 3079 | |
| 3080 | static uint32_t |
Paulo Zanoni | f0a3424 | 2012-12-06 16:51:50 -0200 | [diff] [blame] | 3081 | intel_gen4_signal_levels(uint8_t train_set) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3082 | { |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3083 | uint32_t signal_levels = 0; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3084 | |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3085 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3086 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3087 | default: |
| 3088 | signal_levels |= DP_VOLTAGE_0_4; |
| 3089 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3090 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3091 | signal_levels |= DP_VOLTAGE_0_6; |
| 3092 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3093 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3094 | signal_levels |= DP_VOLTAGE_0_8; |
| 3095 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3096 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3097 | signal_levels |= DP_VOLTAGE_1_2; |
| 3098 | break; |
| 3099 | } |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3100 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3101 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3102 | default: |
| 3103 | signal_levels |= DP_PRE_EMPHASIS_0; |
| 3104 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3105 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3106 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
| 3107 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3108 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3109 | signal_levels |= DP_PRE_EMPHASIS_6; |
| 3110 | break; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3111 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3112 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
| 3113 | break; |
| 3114 | } |
| 3115 | return signal_levels; |
| 3116 | } |
| 3117 | |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 3118 | /* Gen6's DP voltage swing and pre-emphasis control */ |
| 3119 | static uint32_t |
| 3120 | intel_gen6_edp_signal_levels(uint8_t train_set) |
| 3121 | { |
Yuanhan Liu | 3c5a62b | 2011-01-06 18:26:08 +0800 | [diff] [blame] | 3122 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
| 3123 | DP_TRAIN_PRE_EMPHASIS_MASK); |
| 3124 | switch (signal_levels) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3125 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
| 3126 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
Yuanhan Liu | 3c5a62b | 2011-01-06 18:26:08 +0800 | [diff] [blame] | 3127 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3128 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
Yuanhan Liu | 3c5a62b | 2011-01-06 18:26:08 +0800 | [diff] [blame] | 3129 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3130 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
| 3131 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
Yuanhan Liu | 3c5a62b | 2011-01-06 18:26:08 +0800 | [diff] [blame] | 3132 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3133 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
| 3134 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
Yuanhan Liu | 3c5a62b | 2011-01-06 18:26:08 +0800 | [diff] [blame] | 3135 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3136 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
| 3137 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
Yuanhan Liu | 3c5a62b | 2011-01-06 18:26:08 +0800 | [diff] [blame] | 3138 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 3139 | default: |
Yuanhan Liu | 3c5a62b | 2011-01-06 18:26:08 +0800 | [diff] [blame] | 3140 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
| 3141 | "0x%x\n", signal_levels); |
| 3142 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 3143 | } |
| 3144 | } |
| 3145 | |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3146 | /* Gen7's DP voltage swing and pre-emphasis control */ |
| 3147 | static uint32_t |
| 3148 | intel_gen7_edp_signal_levels(uint8_t train_set) |
| 3149 | { |
| 3150 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
| 3151 | DP_TRAIN_PRE_EMPHASIS_MASK); |
| 3152 | switch (signal_levels) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3153 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3154 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3155 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3156 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3157 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3158 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
| 3159 | |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3160 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3161 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3162 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3163 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
| 3164 | |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3165 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3166 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3167 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3168 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
| 3169 | |
| 3170 | default: |
| 3171 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
| 3172 | "0x%x\n", signal_levels); |
| 3173 | return EDP_LINK_TRAIN_500MV_0DB_IVB; |
| 3174 | } |
| 3175 | } |
| 3176 | |
Paulo Zanoni | d6c0d72 | 2012-10-15 15:51:34 -0300 | [diff] [blame] | 3177 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
| 3178 | static uint32_t |
Paulo Zanoni | f0a3424 | 2012-12-06 16:51:50 -0200 | [diff] [blame] | 3179 | intel_hsw_signal_levels(uint8_t train_set) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3180 | { |
Paulo Zanoni | d6c0d72 | 2012-10-15 15:51:34 -0300 | [diff] [blame] | 3181 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
| 3182 | DP_TRAIN_PRE_EMPHASIS_MASK); |
| 3183 | switch (signal_levels) { |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3184 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
Sonika Jindal | c5fe6a0 | 2014-08-11 08:57:36 +0530 | [diff] [blame] | 3185 | return DDI_BUF_TRANS_SELECT(0); |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3186 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
Sonika Jindal | c5fe6a0 | 2014-08-11 08:57:36 +0530 | [diff] [blame] | 3187 | return DDI_BUF_TRANS_SELECT(1); |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3188 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
Sonika Jindal | c5fe6a0 | 2014-08-11 08:57:36 +0530 | [diff] [blame] | 3189 | return DDI_BUF_TRANS_SELECT(2); |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3190 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: |
Sonika Jindal | c5fe6a0 | 2014-08-11 08:57:36 +0530 | [diff] [blame] | 3191 | return DDI_BUF_TRANS_SELECT(3); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3192 | |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3193 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
Sonika Jindal | c5fe6a0 | 2014-08-11 08:57:36 +0530 | [diff] [blame] | 3194 | return DDI_BUF_TRANS_SELECT(4); |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3195 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
Sonika Jindal | c5fe6a0 | 2014-08-11 08:57:36 +0530 | [diff] [blame] | 3196 | return DDI_BUF_TRANS_SELECT(5); |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3197 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
Sonika Jindal | c5fe6a0 | 2014-08-11 08:57:36 +0530 | [diff] [blame] | 3198 | return DDI_BUF_TRANS_SELECT(6); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3199 | |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3200 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
Sonika Jindal | c5fe6a0 | 2014-08-11 08:57:36 +0530 | [diff] [blame] | 3201 | return DDI_BUF_TRANS_SELECT(7); |
Sonika Jindal | bd60018 | 2014-08-08 16:23:41 +0530 | [diff] [blame] | 3202 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
Sonika Jindal | c5fe6a0 | 2014-08-11 08:57:36 +0530 | [diff] [blame] | 3203 | return DDI_BUF_TRANS_SELECT(8); |
Paulo Zanoni | d6c0d72 | 2012-10-15 15:51:34 -0300 | [diff] [blame] | 3204 | default: |
| 3205 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
| 3206 | "0x%x\n", signal_levels); |
Sonika Jindal | c5fe6a0 | 2014-08-11 08:57:36 +0530 | [diff] [blame] | 3207 | return DDI_BUF_TRANS_SELECT(0); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3208 | } |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3209 | } |
| 3210 | |
Paulo Zanoni | f0a3424 | 2012-12-06 16:51:50 -0200 | [diff] [blame] | 3211 | /* Properly updates "DP" with the correct signal levels. */ |
| 3212 | static void |
| 3213 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) |
| 3214 | { |
| 3215 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 3216 | enum port port = intel_dig_port->port; |
Paulo Zanoni | f0a3424 | 2012-12-06 16:51:50 -0200 | [diff] [blame] | 3217 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 3218 | uint32_t signal_levels, mask; |
| 3219 | uint8_t train_set = intel_dp->train_set[0]; |
| 3220 | |
Damien Lespiau | 5a9d1f1 | 2013-12-03 13:56:26 +0000 | [diff] [blame] | 3221 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) { |
Paulo Zanoni | f0a3424 | 2012-12-06 16:51:50 -0200 | [diff] [blame] | 3222 | signal_levels = intel_hsw_signal_levels(train_set); |
| 3223 | mask = DDI_BUF_EMP_MASK; |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 3224 | } else if (IS_CHERRYVIEW(dev)) { |
| 3225 | signal_levels = intel_chv_signal_levels(intel_dp); |
| 3226 | mask = 0; |
Pallavi G | e2fa6fb | 2013-04-18 14:44:28 -0700 | [diff] [blame] | 3227 | } else if (IS_VALLEYVIEW(dev)) { |
| 3228 | signal_levels = intel_vlv_signal_levels(intel_dp); |
| 3229 | mask = 0; |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 3230 | } else if (IS_GEN7(dev) && port == PORT_A) { |
Paulo Zanoni | f0a3424 | 2012-12-06 16:51:50 -0200 | [diff] [blame] | 3231 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
| 3232 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 3233 | } else if (IS_GEN6(dev) && port == PORT_A) { |
Paulo Zanoni | f0a3424 | 2012-12-06 16:51:50 -0200 | [diff] [blame] | 3234 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
| 3235 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; |
| 3236 | } else { |
| 3237 | signal_levels = intel_gen4_signal_levels(train_set); |
| 3238 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; |
| 3239 | } |
| 3240 | |
| 3241 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); |
| 3242 | |
| 3243 | *DP = (*DP & ~mask) | signal_levels; |
| 3244 | } |
| 3245 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3246 | static bool |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 3247 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3248 | uint32_t *DP, |
Chris Wilson | 58e10eb | 2010-10-03 10:56:11 +0100 | [diff] [blame] | 3249 | uint8_t dp_train_pat) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3250 | { |
Paulo Zanoni | 174edf1 | 2012-10-26 19:05:50 -0200 | [diff] [blame] | 3251 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 3252 | struct drm_device *dev = intel_dig_port->base.base.dev; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3253 | struct drm_i915_private *dev_priv = dev->dev_private; |
Jani Nikula | 2cdfe6c | 2013-10-04 15:08:48 +0300 | [diff] [blame] | 3254 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
| 3255 | int ret, len; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3256 | |
Ville Syrjälä | 7b13b58 | 2014-08-18 22:16:08 +0300 | [diff] [blame] | 3257 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
Paulo Zanoni | 47ea754 | 2012-07-17 16:55:16 -0300 | [diff] [blame] | 3258 | |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3259 | I915_WRITE(intel_dp->output_reg, *DP); |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 3260 | POSTING_READ(intel_dp->output_reg); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3261 | |
Jani Nikula | 2cdfe6c | 2013-10-04 15:08:48 +0300 | [diff] [blame] | 3262 | buf[0] = dp_train_pat; |
| 3263 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == |
Paulo Zanoni | 47ea754 | 2012-07-17 16:55:16 -0300 | [diff] [blame] | 3264 | DP_TRAINING_PATTERN_DISABLE) { |
Jani Nikula | 2cdfe6c | 2013-10-04 15:08:48 +0300 | [diff] [blame] | 3265 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
| 3266 | len = 1; |
| 3267 | } else { |
| 3268 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ |
| 3269 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); |
| 3270 | len = intel_dp->lane_count + 1; |
Paulo Zanoni | 47ea754 | 2012-07-17 16:55:16 -0300 | [diff] [blame] | 3271 | } |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3272 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3273 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
| 3274 | buf, len); |
Jani Nikula | 2cdfe6c | 2013-10-04 15:08:48 +0300 | [diff] [blame] | 3275 | |
| 3276 | return ret == len; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3277 | } |
| 3278 | |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3279 | static bool |
| 3280 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, |
| 3281 | uint8_t dp_train_pat) |
| 3282 | { |
Jani Nikula | 953d22e | 2013-10-04 15:08:47 +0300 | [diff] [blame] | 3283 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3284 | intel_dp_set_signal_levels(intel_dp, DP); |
| 3285 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
| 3286 | } |
| 3287 | |
| 3288 | static bool |
| 3289 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, |
Jani Nikula | 0301b3a | 2013-10-15 09:36:08 +0300 | [diff] [blame] | 3290 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3291 | { |
| 3292 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 3293 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 3294 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3295 | int ret; |
| 3296 | |
| 3297 | intel_get_adjust_train(intel_dp, link_status); |
| 3298 | intel_dp_set_signal_levels(intel_dp, DP); |
| 3299 | |
| 3300 | I915_WRITE(intel_dp->output_reg, *DP); |
| 3301 | POSTING_READ(intel_dp->output_reg); |
| 3302 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3303 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
| 3304 | intel_dp->train_set, intel_dp->lane_count); |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3305 | |
| 3306 | return ret == intel_dp->lane_count; |
| 3307 | } |
| 3308 | |
Imre Deak | 3ab9c63 | 2013-05-03 12:57:41 +0300 | [diff] [blame] | 3309 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
| 3310 | { |
| 3311 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 3312 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 3313 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3314 | enum port port = intel_dig_port->port; |
| 3315 | uint32_t val; |
| 3316 | |
| 3317 | if (!HAS_DDI(dev)) |
| 3318 | return; |
| 3319 | |
| 3320 | val = I915_READ(DP_TP_CTL(port)); |
| 3321 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; |
| 3322 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; |
| 3323 | I915_WRITE(DP_TP_CTL(port), val); |
| 3324 | |
| 3325 | /* |
| 3326 | * On PORT_A we can have only eDP in SST mode. There the only reason |
| 3327 | * we need to set idle transmission mode is to work around a HW issue |
| 3328 | * where we enable the pipe while not in idle link-training mode. |
| 3329 | * In this case there is requirement to wait for a minimum number of |
| 3330 | * idle patterns to be sent. |
| 3331 | */ |
| 3332 | if (port == PORT_A) |
| 3333 | return; |
| 3334 | |
| 3335 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), |
| 3336 | 1)) |
| 3337 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); |
| 3338 | } |
| 3339 | |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3340 | /* Enable corresponding port and start training pattern 1 */ |
Paulo Zanoni | c19b066 | 2012-10-15 15:51:41 -0300 | [diff] [blame] | 3341 | void |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3342 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3343 | { |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 3344 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
Paulo Zanoni | c19b066 | 2012-10-15 15:51:41 -0300 | [diff] [blame] | 3345 | struct drm_device *dev = encoder->dev; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3346 | int i; |
| 3347 | uint8_t voltage; |
Keith Packard | cdb0e95 | 2011-11-01 20:00:06 -0700 | [diff] [blame] | 3348 | int voltage_tries, loop_tries; |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 3349 | uint32_t DP = intel_dp->DP; |
Jani Nikula | 6aba5b6 | 2013-10-04 15:08:10 +0300 | [diff] [blame] | 3350 | uint8_t link_config[2]; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3351 | |
Paulo Zanoni | affa935 | 2012-11-23 15:30:39 -0200 | [diff] [blame] | 3352 | if (HAS_DDI(dev)) |
Paulo Zanoni | c19b066 | 2012-10-15 15:51:41 -0300 | [diff] [blame] | 3353 | intel_ddi_prepare_link_retrain(encoder); |
| 3354 | |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3355 | /* Write the link configuration data */ |
Jani Nikula | 6aba5b6 | 2013-10-04 15:08:10 +0300 | [diff] [blame] | 3356 | link_config[0] = intel_dp->link_bw; |
| 3357 | link_config[1] = intel_dp->lane_count; |
| 3358 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
| 3359 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3360 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
Jani Nikula | 6aba5b6 | 2013-10-04 15:08:10 +0300 | [diff] [blame] | 3361 | |
| 3362 | link_config[0] = 0; |
| 3363 | link_config[1] = DP_SET_ANSI_8B10B; |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3364 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3365 | |
| 3366 | DP |= DP_PORT_EN; |
Keith Packard | 1a2eb46 | 2011-11-16 16:26:07 -0800 | [diff] [blame] | 3367 | |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3368 | /* clock recovery */ |
| 3369 | if (!intel_dp_reset_link_train(intel_dp, &DP, |
| 3370 | DP_TRAINING_PATTERN_1 | |
| 3371 | DP_LINK_SCRAMBLING_DISABLE)) { |
| 3372 | DRM_ERROR("failed to enable link training\n"); |
| 3373 | return; |
| 3374 | } |
| 3375 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3376 | voltage = 0xff; |
Keith Packard | cdb0e95 | 2011-11-01 20:00:06 -0700 | [diff] [blame] | 3377 | voltage_tries = 0; |
| 3378 | loop_tries = 0; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3379 | for (;;) { |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3380 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3381 | |
Daniel Vetter | a7c9655 | 2012-10-18 10:15:30 +0200 | [diff] [blame] | 3382 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
Keith Packard | 93f62da | 2011-11-01 19:45:03 -0700 | [diff] [blame] | 3383 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
| 3384 | DRM_ERROR("failed to get link status\n"); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3385 | break; |
Keith Packard | 93f62da | 2011-11-01 19:45:03 -0700 | [diff] [blame] | 3386 | } |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3387 | |
Daniel Vetter | 0191627 | 2012-10-18 10:15:25 +0200 | [diff] [blame] | 3388 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
Keith Packard | 93f62da | 2011-11-01 19:45:03 -0700 | [diff] [blame] | 3389 | DRM_DEBUG_KMS("clock recovery OK\n"); |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3390 | break; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3391 | } |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3392 | |
| 3393 | /* Check to see if we've tried the max voltage */ |
| 3394 | for (i = 0; i < intel_dp->lane_count; i++) |
| 3395 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) |
| 3396 | break; |
Takashi Iwai | 3b4f819 | 2013-03-11 18:40:16 +0100 | [diff] [blame] | 3397 | if (i == intel_dp->lane_count) { |
Daniel Vetter | b06fbda | 2012-10-16 09:50:25 +0200 | [diff] [blame] | 3398 | ++loop_tries; |
| 3399 | if (loop_tries == 5) { |
Jani Nikula | 3def84b | 2013-10-05 16:13:56 +0300 | [diff] [blame] | 3400 | DRM_ERROR("too many full retries, give up\n"); |
Keith Packard | cdb0e95 | 2011-11-01 20:00:06 -0700 | [diff] [blame] | 3401 | break; |
| 3402 | } |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3403 | intel_dp_reset_link_train(intel_dp, &DP, |
| 3404 | DP_TRAINING_PATTERN_1 | |
| 3405 | DP_LINK_SCRAMBLING_DISABLE); |
Keith Packard | cdb0e95 | 2011-11-01 20:00:06 -0700 | [diff] [blame] | 3406 | voltage_tries = 0; |
| 3407 | continue; |
| 3408 | } |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3409 | |
| 3410 | /* Check to see if we've tried the same voltage 5 times */ |
Daniel Vetter | b06fbda | 2012-10-16 09:50:25 +0200 | [diff] [blame] | 3411 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
Chris Wilson | 2477367 | 2012-09-26 16:48:30 +0100 | [diff] [blame] | 3412 | ++voltage_tries; |
Daniel Vetter | b06fbda | 2012-10-16 09:50:25 +0200 | [diff] [blame] | 3413 | if (voltage_tries == 5) { |
Jani Nikula | 3def84b | 2013-10-05 16:13:56 +0300 | [diff] [blame] | 3414 | DRM_ERROR("too many voltage retries, give up\n"); |
Daniel Vetter | b06fbda | 2012-10-16 09:50:25 +0200 | [diff] [blame] | 3415 | break; |
| 3416 | } |
| 3417 | } else |
| 3418 | voltage_tries = 0; |
| 3419 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3420 | |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3421 | /* Update training set as requested by target */ |
| 3422 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { |
| 3423 | DRM_ERROR("failed to update link training\n"); |
| 3424 | break; |
| 3425 | } |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3426 | } |
| 3427 | |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3428 | intel_dp->DP = DP; |
| 3429 | } |
| 3430 | |
Paulo Zanoni | c19b066 | 2012-10-15 15:51:41 -0300 | [diff] [blame] | 3431 | void |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3432 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
| 3433 | { |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3434 | bool channel_eq = false; |
Jesse Barnes | 37f8097 | 2011-01-05 14:45:24 -0800 | [diff] [blame] | 3435 | int tries, cr_tries; |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3436 | uint32_t DP = intel_dp->DP; |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 3437 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
| 3438 | |
| 3439 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ |
| 3440 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) |
| 3441 | training_pattern = DP_TRAINING_PATTERN_3; |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3442 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3443 | /* channel equalization */ |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3444 | if (!intel_dp_set_link_train(intel_dp, &DP, |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 3445 | training_pattern | |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3446 | DP_LINK_SCRAMBLING_DISABLE)) { |
| 3447 | DRM_ERROR("failed to start channel equalization\n"); |
| 3448 | return; |
| 3449 | } |
| 3450 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3451 | tries = 0; |
Jesse Barnes | 37f8097 | 2011-01-05 14:45:24 -0800 | [diff] [blame] | 3452 | cr_tries = 0; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3453 | channel_eq = false; |
| 3454 | for (;;) { |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3455 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 3456 | |
Jesse Barnes | 37f8097 | 2011-01-05 14:45:24 -0800 | [diff] [blame] | 3457 | if (cr_tries > 5) { |
| 3458 | DRM_ERROR("failed to train DP, aborting\n"); |
Jesse Barnes | 37f8097 | 2011-01-05 14:45:24 -0800 | [diff] [blame] | 3459 | break; |
| 3460 | } |
| 3461 | |
Daniel Vetter | a7c9655 | 2012-10-18 10:15:30 +0200 | [diff] [blame] | 3462 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3463 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
| 3464 | DRM_ERROR("failed to get link status\n"); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3465 | break; |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3466 | } |
Jesse Barnes | 869184a | 2010-10-07 16:01:22 -0700 | [diff] [blame] | 3467 | |
Jesse Barnes | 37f8097 | 2011-01-05 14:45:24 -0800 | [diff] [blame] | 3468 | /* Make sure clock is still ok */ |
Daniel Vetter | 0191627 | 2012-10-18 10:15:25 +0200 | [diff] [blame] | 3469 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
Jesse Barnes | 37f8097 | 2011-01-05 14:45:24 -0800 | [diff] [blame] | 3470 | intel_dp_start_link_train(intel_dp); |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3471 | intel_dp_set_link_train(intel_dp, &DP, |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 3472 | training_pattern | |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3473 | DP_LINK_SCRAMBLING_DISABLE); |
Jesse Barnes | 37f8097 | 2011-01-05 14:45:24 -0800 | [diff] [blame] | 3474 | cr_tries++; |
| 3475 | continue; |
| 3476 | } |
| 3477 | |
Daniel Vetter | 1ffdff1 | 2012-10-18 10:15:24 +0200 | [diff] [blame] | 3478 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3479 | channel_eq = true; |
| 3480 | break; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3481 | } |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3482 | |
Jesse Barnes | 37f8097 | 2011-01-05 14:45:24 -0800 | [diff] [blame] | 3483 | /* Try 5 times, then try clock recovery if that fails */ |
| 3484 | if (tries > 5) { |
Jesse Barnes | 37f8097 | 2011-01-05 14:45:24 -0800 | [diff] [blame] | 3485 | intel_dp_start_link_train(intel_dp); |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3486 | intel_dp_set_link_train(intel_dp, &DP, |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 3487 | training_pattern | |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3488 | DP_LINK_SCRAMBLING_DISABLE); |
Jesse Barnes | 37f8097 | 2011-01-05 14:45:24 -0800 | [diff] [blame] | 3489 | tries = 0; |
| 3490 | cr_tries++; |
| 3491 | continue; |
| 3492 | } |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3493 | |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3494 | /* Update training set as requested by target */ |
| 3495 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { |
| 3496 | DRM_ERROR("failed to update link training\n"); |
| 3497 | break; |
| 3498 | } |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3499 | ++tries; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3500 | } |
Chris Wilson | 3cf2efb | 2010-11-29 10:09:55 +0000 | [diff] [blame] | 3501 | |
Imre Deak | 3ab9c63 | 2013-05-03 12:57:41 +0300 | [diff] [blame] | 3502 | intel_dp_set_idle_link_train(intel_dp); |
| 3503 | |
| 3504 | intel_dp->DP = DP; |
| 3505 | |
Paulo Zanoni | d6c0d72 | 2012-10-15 15:51:34 -0300 | [diff] [blame] | 3506 | if (channel_eq) |
Masanari Iida | 07f4225 | 2013-03-20 11:00:34 +0900 | [diff] [blame] | 3507 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
Paulo Zanoni | d6c0d72 | 2012-10-15 15:51:34 -0300 | [diff] [blame] | 3508 | |
Imre Deak | 3ab9c63 | 2013-05-03 12:57:41 +0300 | [diff] [blame] | 3509 | } |
| 3510 | |
| 3511 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) |
| 3512 | { |
Jani Nikula | 70aff66 | 2013-09-27 15:10:44 +0300 | [diff] [blame] | 3513 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
Imre Deak | 3ab9c63 | 2013-05-03 12:57:41 +0300 | [diff] [blame] | 3514 | DP_TRAINING_PATTERN_DISABLE); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3515 | } |
| 3516 | |
| 3517 | static void |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 3518 | intel_dp_link_down(struct intel_dp *intel_dp) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3519 | { |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 3520 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 3521 | enum port port = intel_dig_port->port; |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 3522 | struct drm_device *dev = intel_dig_port->base.base.dev; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3523 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | ab527ef | 2012-11-29 15:59:33 +0100 | [diff] [blame] | 3524 | struct intel_crtc *intel_crtc = |
| 3525 | to_intel_crtc(intel_dig_port->base.base.crtc); |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 3526 | uint32_t DP = intel_dp->DP; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3527 | |
Daniel Vetter | bc76e32 | 2014-05-20 22:46:50 +0200 | [diff] [blame] | 3528 | if (WARN_ON(HAS_DDI(dev))) |
Paulo Zanoni | c19b066 | 2012-10-15 15:51:41 -0300 | [diff] [blame] | 3529 | return; |
| 3530 | |
Daniel Vetter | 0c33d8d | 2012-09-06 22:15:43 +0200 | [diff] [blame] | 3531 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
Chris Wilson | 1b39d6f | 2010-12-06 11:20:45 +0000 | [diff] [blame] | 3532 | return; |
| 3533 | |
Zhao Yakui | 28c9773 | 2009-10-09 11:39:41 +0800 | [diff] [blame] | 3534 | DRM_DEBUG_KMS("\n"); |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 3535 | |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 3536 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 3537 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 3538 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 3539 | } else { |
Ville Syrjälä | aad3d14 | 2014-06-28 02:04:25 +0300 | [diff] [blame] | 3540 | if (IS_CHERRYVIEW(dev)) |
| 3541 | DP &= ~DP_LINK_TRAIN_MASK_CHV; |
| 3542 | else |
| 3543 | DP &= ~DP_LINK_TRAIN_MASK; |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 3544 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 3545 | } |
Chris Wilson | fe255d0 | 2010-09-11 21:37:48 +0100 | [diff] [blame] | 3546 | POSTING_READ(intel_dp->output_reg); |
Zhenyu Wang | 5eb08b6 | 2009-07-24 01:00:31 +0800 | [diff] [blame] | 3547 | |
Daniel Vetter | 493a708 | 2012-05-30 12:31:56 +0200 | [diff] [blame] | 3548 | if (HAS_PCH_IBX(dev) && |
Chris Wilson | 1b39d6f | 2010-12-06 11:20:45 +0000 | [diff] [blame] | 3549 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 3550 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
Chris Wilson | 31acbcc | 2011-04-17 06:38:35 +0100 | [diff] [blame] | 3551 | |
Eric Anholt | 5bddd17 | 2010-11-18 09:32:59 +0800 | [diff] [blame] | 3552 | /* Hardware workaround: leaving our transcoder select |
| 3553 | * set to transcoder B while it's off will prevent the |
| 3554 | * corresponding HDMI output on transcoder A. |
| 3555 | * |
| 3556 | * Combine this with another hardware workaround: |
| 3557 | * transcoder select bit can only be cleared while the |
| 3558 | * port is enabled. |
| 3559 | */ |
| 3560 | DP &= ~DP_PIPEB_SELECT; |
| 3561 | I915_WRITE(intel_dp->output_reg, DP); |
| 3562 | |
| 3563 | /* Changes to enable or select take place the vblank |
| 3564 | * after being written. |
| 3565 | */ |
Daniel Vetter | ff50afe | 2012-11-29 15:59:34 +0100 | [diff] [blame] | 3566 | if (WARN_ON(crtc == NULL)) { |
| 3567 | /* We should never try to disable a port without a crtc |
| 3568 | * attached. For paranoia keep the code around for a |
| 3569 | * bit. */ |
Chris Wilson | 31acbcc | 2011-04-17 06:38:35 +0100 | [diff] [blame] | 3570 | POSTING_READ(intel_dp->output_reg); |
| 3571 | msleep(50); |
| 3572 | } else |
Daniel Vetter | ab527ef | 2012-11-29 15:59:33 +0100 | [diff] [blame] | 3573 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
Eric Anholt | 5bddd17 | 2010-11-18 09:32:59 +0800 | [diff] [blame] | 3574 | } |
| 3575 | |
Wu Fengguang | 832afda | 2011-12-09 20:42:21 +0800 | [diff] [blame] | 3576 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 3577 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
| 3578 | POSTING_READ(intel_dp->output_reg); |
Keith Packard | f01eca2 | 2011-09-28 16:48:10 -0700 | [diff] [blame] | 3579 | msleep(intel_dp->panel_power_down_delay); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3580 | } |
| 3581 | |
Keith Packard | 26d61aa | 2011-07-25 20:01:09 -0700 | [diff] [blame] | 3582 | static bool |
| 3583 | intel_dp_get_dpcd(struct intel_dp *intel_dp) |
Keith Packard | 92fd8fd | 2011-07-25 19:50:10 -0700 | [diff] [blame] | 3584 | { |
Rodrigo Vivi | a031d70 | 2013-10-03 16:15:06 -0300 | [diff] [blame] | 3585 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
| 3586 | struct drm_device *dev = dig_port->base.base.dev; |
| 3587 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3588 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3589 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
| 3590 | sizeof(intel_dp->dpcd)) < 0) |
Adam Jackson | edb3924 | 2012-09-18 10:58:49 -0400 | [diff] [blame] | 3591 | return false; /* aux transfer failed */ |
Keith Packard | 92fd8fd | 2011-07-25 19:50:10 -0700 | [diff] [blame] | 3592 | |
Andy Shevchenko | a8e9815 | 2014-09-01 14:12:01 +0300 | [diff] [blame] | 3593 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
Damien Lespiau | 577c7a5 | 2012-12-13 16:09:02 +0000 | [diff] [blame] | 3594 | |
Adam Jackson | edb3924 | 2012-09-18 10:58:49 -0400 | [diff] [blame] | 3595 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
| 3596 | return false; /* DPCD not present */ |
| 3597 | |
Shobhit Kumar | 2293bb5 | 2013-07-11 18:44:56 -0300 | [diff] [blame] | 3598 | /* Check if the panel supports PSR */ |
| 3599 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); |
Jani Nikula | 5000393 | 2013-09-20 16:42:17 +0300 | [diff] [blame] | 3600 | if (is_edp(intel_dp)) { |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3601 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
| 3602 | intel_dp->psr_dpcd, |
| 3603 | sizeof(intel_dp->psr_dpcd)); |
Rodrigo Vivi | a031d70 | 2013-10-03 16:15:06 -0300 | [diff] [blame] | 3604 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
| 3605 | dev_priv->psr.sink_support = true; |
Jani Nikula | 5000393 | 2013-09-20 16:42:17 +0300 | [diff] [blame] | 3606 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
Rodrigo Vivi | a031d70 | 2013-10-03 16:15:06 -0300 | [diff] [blame] | 3607 | } |
Jani Nikula | 5000393 | 2013-09-20 16:42:17 +0300 | [diff] [blame] | 3608 | } |
| 3609 | |
Jani Nikula | 7809a61 | 2014-10-29 11:03:26 +0200 | [diff] [blame] | 3610 | /* Training Pattern 3 support, both source and sink */ |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 3611 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && |
Jani Nikula | 7809a61 | 2014-10-29 11:03:26 +0200 | [diff] [blame] | 3612 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED && |
| 3613 | (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)) { |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 3614 | intel_dp->use_tps3 = true; |
Jani Nikula | f8d8a67 | 2014-09-05 16:19:18 +0300 | [diff] [blame] | 3615 | DRM_DEBUG_KMS("Displayport TPS3 supported\n"); |
Todd Previte | 06ea66b | 2014-01-20 10:19:39 -0700 | [diff] [blame] | 3616 | } else |
| 3617 | intel_dp->use_tps3 = false; |
| 3618 | |
Adam Jackson | edb3924 | 2012-09-18 10:58:49 -0400 | [diff] [blame] | 3619 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
| 3620 | DP_DWN_STRM_PORT_PRESENT)) |
| 3621 | return true; /* native DP sink */ |
| 3622 | |
| 3623 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) |
| 3624 | return true; /* no per-port downstream info */ |
| 3625 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3626 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
| 3627 | intel_dp->downstream_ports, |
| 3628 | DP_MAX_DOWNSTREAM_PORTS) < 0) |
Adam Jackson | edb3924 | 2012-09-18 10:58:49 -0400 | [diff] [blame] | 3629 | return false; /* downstream port status fetch failed */ |
| 3630 | |
| 3631 | return true; |
Keith Packard | 92fd8fd | 2011-07-25 19:50:10 -0700 | [diff] [blame] | 3632 | } |
| 3633 | |
Adam Jackson | 0d19832 | 2012-05-14 16:05:47 -0400 | [diff] [blame] | 3634 | static void |
| 3635 | intel_dp_probe_oui(struct intel_dp *intel_dp) |
| 3636 | { |
| 3637 | u8 buf[3]; |
| 3638 | |
| 3639 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) |
| 3640 | return; |
| 3641 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3642 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
Adam Jackson | 0d19832 | 2012-05-14 16:05:47 -0400 | [diff] [blame] | 3643 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
| 3644 | buf[0], buf[1], buf[2]); |
| 3645 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3646 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
Adam Jackson | 0d19832 | 2012-05-14 16:05:47 -0400 | [diff] [blame] | 3647 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
| 3648 | buf[0], buf[1], buf[2]); |
| 3649 | } |
| 3650 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 3651 | static bool |
| 3652 | intel_dp_probe_mst(struct intel_dp *intel_dp) |
| 3653 | { |
| 3654 | u8 buf[1]; |
| 3655 | |
| 3656 | if (!intel_dp->can_mst) |
| 3657 | return false; |
| 3658 | |
| 3659 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) |
| 3660 | return false; |
| 3661 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 3662 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
| 3663 | if (buf[0] & DP_MST_CAP) { |
| 3664 | DRM_DEBUG_KMS("Sink is MST capable\n"); |
| 3665 | intel_dp->is_mst = true; |
| 3666 | } else { |
| 3667 | DRM_DEBUG_KMS("Sink is not MST capable\n"); |
| 3668 | intel_dp->is_mst = false; |
| 3669 | } |
| 3670 | } |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 3671 | |
| 3672 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); |
| 3673 | return intel_dp->is_mst; |
| 3674 | } |
| 3675 | |
Rodrigo Vivi | d2e216d | 2014-01-24 13:36:17 -0200 | [diff] [blame] | 3676 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
| 3677 | { |
| 3678 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 3679 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 3680 | struct intel_crtc *intel_crtc = |
| 3681 | to_intel_crtc(intel_dig_port->base.base.crtc); |
Rodrigo Vivi | ad9dc91 | 2014-09-16 19:18:12 -0400 | [diff] [blame] | 3682 | u8 buf; |
| 3683 | int test_crc_count; |
| 3684 | int attempts = 6; |
Rodrigo Vivi | d2e216d | 2014-01-24 13:36:17 -0200 | [diff] [blame] | 3685 | |
Rodrigo Vivi | ad9dc91 | 2014-09-16 19:18:12 -0400 | [diff] [blame] | 3686 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
Rodrigo Vivi | bda0381 | 2014-09-15 19:24:03 -0400 | [diff] [blame] | 3687 | return -EIO; |
Rodrigo Vivi | d2e216d | 2014-01-24 13:36:17 -0200 | [diff] [blame] | 3688 | |
Rodrigo Vivi | ad9dc91 | 2014-09-16 19:18:12 -0400 | [diff] [blame] | 3689 | if (!(buf & DP_TEST_CRC_SUPPORTED)) |
Rodrigo Vivi | d2e216d | 2014-01-24 13:36:17 -0200 | [diff] [blame] | 3690 | return -ENOTTY; |
| 3691 | |
Rodrigo Vivi | 1dda5f9 | 2014-10-01 07:32:37 -0700 | [diff] [blame] | 3692 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
Rodrigo Vivi | bda0381 | 2014-09-15 19:24:03 -0400 | [diff] [blame] | 3693 | return -EIO; |
Rodrigo Vivi | d2e216d | 2014-01-24 13:36:17 -0200 | [diff] [blame] | 3694 | |
Rodrigo Vivi | d2e216d | 2014-01-24 13:36:17 -0200 | [diff] [blame] | 3695 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
Rodrigo Vivi | ce31d9f | 2014-09-29 18:29:52 -0400 | [diff] [blame] | 3696 | buf | DP_TEST_SINK_START) < 0) |
Rodrigo Vivi | d2e216d | 2014-01-24 13:36:17 -0200 | [diff] [blame] | 3697 | return -EIO; |
| 3698 | |
Rodrigo Vivi | 1dda5f9 | 2014-10-01 07:32:37 -0700 | [diff] [blame] | 3699 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
| 3700 | return -EIO; |
Rodrigo Vivi | ad9dc91 | 2014-09-16 19:18:12 -0400 | [diff] [blame] | 3701 | test_crc_count = buf & DP_TEST_COUNT_MASK; |
| 3702 | |
| 3703 | do { |
Rodrigo Vivi | 1dda5f9 | 2014-10-01 07:32:37 -0700 | [diff] [blame] | 3704 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
| 3705 | DP_TEST_SINK_MISC, &buf) < 0) |
| 3706 | return -EIO; |
Rodrigo Vivi | ad9dc91 | 2014-09-16 19:18:12 -0400 | [diff] [blame] | 3707 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
| 3708 | } while (--attempts && (buf & DP_TEST_COUNT_MASK) == test_crc_count); |
| 3709 | |
| 3710 | if (attempts == 0) { |
Daniel Vetter | 90bd1f4 | 2014-11-19 11:18:47 +0100 | [diff] [blame] | 3711 | DRM_DEBUG_KMS("Panel is unable to calculate CRC after 6 vblanks\n"); |
| 3712 | return -ETIMEDOUT; |
Rodrigo Vivi | ad9dc91 | 2014-09-16 19:18:12 -0400 | [diff] [blame] | 3713 | } |
Rodrigo Vivi | d2e216d | 2014-01-24 13:36:17 -0200 | [diff] [blame] | 3714 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3715 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
Rodrigo Vivi | bda0381 | 2014-09-15 19:24:03 -0400 | [diff] [blame] | 3716 | return -EIO; |
Rodrigo Vivi | d2e216d | 2014-01-24 13:36:17 -0200 | [diff] [blame] | 3717 | |
Rodrigo Vivi | 1dda5f9 | 2014-10-01 07:32:37 -0700 | [diff] [blame] | 3718 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
| 3719 | return -EIO; |
| 3720 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
| 3721 | buf & ~DP_TEST_SINK_START) < 0) |
| 3722 | return -EIO; |
Rodrigo Vivi | ce31d9f | 2014-09-29 18:29:52 -0400 | [diff] [blame] | 3723 | |
Rodrigo Vivi | d2e216d | 2014-01-24 13:36:17 -0200 | [diff] [blame] | 3724 | return 0; |
| 3725 | } |
| 3726 | |
Jesse Barnes | a60f0e3 | 2011-10-20 15:09:17 -0700 | [diff] [blame] | 3727 | static bool |
| 3728 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) |
| 3729 | { |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3730 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
| 3731 | DP_DEVICE_SERVICE_IRQ_VECTOR, |
| 3732 | sink_irq_vector, 1) == 1; |
Jesse Barnes | a60f0e3 | 2011-10-20 15:09:17 -0700 | [diff] [blame] | 3733 | } |
| 3734 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 3735 | static bool |
| 3736 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) |
| 3737 | { |
| 3738 | int ret; |
| 3739 | |
| 3740 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, |
| 3741 | DP_SINK_COUNT_ESI, |
| 3742 | sink_irq_vector, 14); |
| 3743 | if (ret != 14) |
| 3744 | return false; |
| 3745 | |
| 3746 | return true; |
| 3747 | } |
| 3748 | |
Jesse Barnes | a60f0e3 | 2011-10-20 15:09:17 -0700 | [diff] [blame] | 3749 | static void |
| 3750 | intel_dp_handle_test_request(struct intel_dp *intel_dp) |
| 3751 | { |
| 3752 | /* NAK by default */ |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3753 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK); |
Jesse Barnes | a60f0e3 | 2011-10-20 15:09:17 -0700 | [diff] [blame] | 3754 | } |
| 3755 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 3756 | static int |
| 3757 | intel_dp_check_mst_status(struct intel_dp *intel_dp) |
| 3758 | { |
| 3759 | bool bret; |
| 3760 | |
| 3761 | if (intel_dp->is_mst) { |
| 3762 | u8 esi[16] = { 0 }; |
| 3763 | int ret = 0; |
| 3764 | int retry; |
| 3765 | bool handled; |
| 3766 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); |
| 3767 | go_again: |
| 3768 | if (bret == true) { |
| 3769 | |
| 3770 | /* check link status - esi[10] = 0x200c */ |
| 3771 | if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { |
| 3772 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); |
| 3773 | intel_dp_start_link_train(intel_dp); |
| 3774 | intel_dp_complete_link_train(intel_dp); |
| 3775 | intel_dp_stop_link_train(intel_dp); |
| 3776 | } |
| 3777 | |
Andy Shevchenko | 6f34cc3 | 2015-01-15 13:45:09 +0200 | [diff] [blame] | 3778 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 3779 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
| 3780 | |
| 3781 | if (handled) { |
| 3782 | for (retry = 0; retry < 3; retry++) { |
| 3783 | int wret; |
| 3784 | wret = drm_dp_dpcd_write(&intel_dp->aux, |
| 3785 | DP_SINK_COUNT_ESI+1, |
| 3786 | &esi[1], 3); |
| 3787 | if (wret == 3) { |
| 3788 | break; |
| 3789 | } |
| 3790 | } |
| 3791 | |
| 3792 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); |
| 3793 | if (bret == true) { |
Andy Shevchenko | 6f34cc3 | 2015-01-15 13:45:09 +0200 | [diff] [blame] | 3794 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 3795 | goto go_again; |
| 3796 | } |
| 3797 | } else |
| 3798 | ret = 0; |
| 3799 | |
| 3800 | return ret; |
| 3801 | } else { |
| 3802 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 3803 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); |
| 3804 | intel_dp->is_mst = false; |
| 3805 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); |
| 3806 | /* send a hotplug event */ |
| 3807 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); |
| 3808 | } |
| 3809 | } |
| 3810 | return -EINVAL; |
| 3811 | } |
| 3812 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3813 | /* |
| 3814 | * According to DP spec |
| 3815 | * 5.1.2: |
| 3816 | * 1. Read DPCD |
| 3817 | * 2. Configure link according to Receiver Capabilities |
| 3818 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 |
| 3819 | * 4. Check link status on receipt of hot-plug interrupt |
| 3820 | */ |
Damien Lespiau | a514620 | 2015-02-10 19:32:22 +0000 | [diff] [blame] | 3821 | static void |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 3822 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3823 | { |
Dave Airlie | 5b215bc | 2014-08-05 10:40:20 +1000 | [diff] [blame] | 3824 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 3825 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
Jesse Barnes | a60f0e3 | 2011-10-20 15:09:17 -0700 | [diff] [blame] | 3826 | u8 sink_irq_vector; |
Keith Packard | 93f62da | 2011-11-01 19:45:03 -0700 | [diff] [blame] | 3827 | u8 link_status[DP_LINK_STATUS_SIZE]; |
Jesse Barnes | a60f0e3 | 2011-10-20 15:09:17 -0700 | [diff] [blame] | 3828 | |
Dave Airlie | 5b215bc | 2014-08-05 10:40:20 +1000 | [diff] [blame] | 3829 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
| 3830 | |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 3831 | if (!intel_encoder->connectors_active) |
Keith Packard | d2b996a | 2011-07-25 22:37:51 -0700 | [diff] [blame] | 3832 | return; |
Jesse Barnes | 59cd09e | 2011-07-07 11:10:59 -0700 | [diff] [blame] | 3833 | |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 3834 | if (WARN_ON(!intel_encoder->base.crtc)) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3835 | return; |
| 3836 | |
Imre Deak | 1a125d8 | 2014-08-18 14:42:46 +0300 | [diff] [blame] | 3837 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
| 3838 | return; |
| 3839 | |
Keith Packard | 92fd8fd | 2011-07-25 19:50:10 -0700 | [diff] [blame] | 3840 | /* Try to read receiver status if the link appears to be up */ |
Keith Packard | 93f62da | 2011-11-01 19:45:03 -0700 | [diff] [blame] | 3841 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3842 | return; |
| 3843 | } |
| 3844 | |
Keith Packard | 92fd8fd | 2011-07-25 19:50:10 -0700 | [diff] [blame] | 3845 | /* Now read the DPCD to see if it's actually running */ |
Keith Packard | 26d61aa | 2011-07-25 20:01:09 -0700 | [diff] [blame] | 3846 | if (!intel_dp_get_dpcd(intel_dp)) { |
Jesse Barnes | 59cd09e | 2011-07-07 11:10:59 -0700 | [diff] [blame] | 3847 | return; |
| 3848 | } |
| 3849 | |
Jesse Barnes | a60f0e3 | 2011-10-20 15:09:17 -0700 | [diff] [blame] | 3850 | /* Try to read the source of the interrupt */ |
| 3851 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
| 3852 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { |
| 3853 | /* Clear interrupt source */ |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3854 | drm_dp_dpcd_writeb(&intel_dp->aux, |
| 3855 | DP_DEVICE_SERVICE_IRQ_VECTOR, |
| 3856 | sink_irq_vector); |
Jesse Barnes | a60f0e3 | 2011-10-20 15:09:17 -0700 | [diff] [blame] | 3857 | |
| 3858 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) |
| 3859 | intel_dp_handle_test_request(intel_dp); |
| 3860 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) |
| 3861 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); |
| 3862 | } |
| 3863 | |
Daniel Vetter | 1ffdff1 | 2012-10-18 10:15:24 +0200 | [diff] [blame] | 3864 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
Keith Packard | 92fd8fd | 2011-07-25 19:50:10 -0700 | [diff] [blame] | 3865 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
Jani Nikula | 8e329a03 | 2014-06-03 14:56:21 +0300 | [diff] [blame] | 3866 | intel_encoder->base.name); |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3867 | intel_dp_start_link_train(intel_dp); |
| 3868 | intel_dp_complete_link_train(intel_dp); |
Imre Deak | 3ab9c63 | 2013-05-03 12:57:41 +0300 | [diff] [blame] | 3869 | intel_dp_stop_link_train(intel_dp); |
Jesse Barnes | 33a34e4 | 2010-09-08 12:42:02 -0700 | [diff] [blame] | 3870 | } |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3871 | } |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3872 | |
Adam Jackson | caf9ab2 | 2012-09-18 10:58:50 -0400 | [diff] [blame] | 3873 | /* XXX this is probably wrong for multiple downstream ports */ |
Zhenyu Wang | 5eb08b6 | 2009-07-24 01:00:31 +0800 | [diff] [blame] | 3874 | static enum drm_connector_status |
Keith Packard | 26d61aa | 2011-07-25 20:01:09 -0700 | [diff] [blame] | 3875 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
Adam Jackson | 71ba9000 | 2011-07-12 17:38:04 -0400 | [diff] [blame] | 3876 | { |
Adam Jackson | caf9ab2 | 2012-09-18 10:58:50 -0400 | [diff] [blame] | 3877 | uint8_t *dpcd = intel_dp->dpcd; |
Adam Jackson | caf9ab2 | 2012-09-18 10:58:50 -0400 | [diff] [blame] | 3878 | uint8_t type; |
| 3879 | |
| 3880 | if (!intel_dp_get_dpcd(intel_dp)) |
| 3881 | return connector_status_disconnected; |
| 3882 | |
| 3883 | /* if there's no downstream port, we're done */ |
| 3884 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) |
Keith Packard | 26d61aa | 2011-07-25 20:01:09 -0700 | [diff] [blame] | 3885 | return connector_status_connected; |
Adam Jackson | caf9ab2 | 2012-09-18 10:58:50 -0400 | [diff] [blame] | 3886 | |
| 3887 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ |
Jani Nikula | c9ff160 | 2013-09-27 14:48:42 +0300 | [diff] [blame] | 3888 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
| 3889 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { |
Adam Jackson | 2323517 | 2012-09-20 16:42:45 -0400 | [diff] [blame] | 3890 | uint8_t reg; |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3891 | |
| 3892 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, |
| 3893 | ®, 1) < 0) |
Adam Jackson | caf9ab2 | 2012-09-18 10:58:50 -0400 | [diff] [blame] | 3894 | return connector_status_unknown; |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 3895 | |
Adam Jackson | 2323517 | 2012-09-20 16:42:45 -0400 | [diff] [blame] | 3896 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
| 3897 | : connector_status_disconnected; |
Adam Jackson | caf9ab2 | 2012-09-18 10:58:50 -0400 | [diff] [blame] | 3898 | } |
| 3899 | |
| 3900 | /* If no HPD, poke DDC gently */ |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 3901 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
Adam Jackson | caf9ab2 | 2012-09-18 10:58:50 -0400 | [diff] [blame] | 3902 | return connector_status_connected; |
| 3903 | |
| 3904 | /* Well we tried, say unknown for unreliable port types */ |
Jani Nikula | c9ff160 | 2013-09-27 14:48:42 +0300 | [diff] [blame] | 3905 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
| 3906 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; |
| 3907 | if (type == DP_DS_PORT_TYPE_VGA || |
| 3908 | type == DP_DS_PORT_TYPE_NON_EDID) |
| 3909 | return connector_status_unknown; |
| 3910 | } else { |
| 3911 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
| 3912 | DP_DWN_STRM_PORT_TYPE_MASK; |
| 3913 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || |
| 3914 | type == DP_DWN_STRM_PORT_TYPE_OTHER) |
| 3915 | return connector_status_unknown; |
| 3916 | } |
Adam Jackson | caf9ab2 | 2012-09-18 10:58:50 -0400 | [diff] [blame] | 3917 | |
| 3918 | /* Anything else is out of spec, warn and ignore */ |
| 3919 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); |
Keith Packard | 26d61aa | 2011-07-25 20:01:09 -0700 | [diff] [blame] | 3920 | return connector_status_disconnected; |
Adam Jackson | 71ba9000 | 2011-07-12 17:38:04 -0400 | [diff] [blame] | 3921 | } |
| 3922 | |
| 3923 | static enum drm_connector_status |
Chris Wilson | d410b56 | 2014-09-02 20:03:59 +0100 | [diff] [blame] | 3924 | edp_detect(struct intel_dp *intel_dp) |
| 3925 | { |
| 3926 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 3927 | enum drm_connector_status status; |
| 3928 | |
| 3929 | status = intel_panel_detect(dev); |
| 3930 | if (status == connector_status_unknown) |
| 3931 | status = connector_status_connected; |
| 3932 | |
| 3933 | return status; |
| 3934 | } |
| 3935 | |
| 3936 | static enum drm_connector_status |
Zhenyu Wang | a9756bb | 2010-09-19 13:09:06 +0800 | [diff] [blame] | 3937 | ironlake_dp_detect(struct intel_dp *intel_dp) |
Zhenyu Wang | 5eb08b6 | 2009-07-24 01:00:31 +0800 | [diff] [blame] | 3938 | { |
Paulo Zanoni | 30add22 | 2012-10-26 19:05:45 -0200 | [diff] [blame] | 3939 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
Damien Lespiau | 1b46963 | 2012-12-13 16:09:01 +0000 | [diff] [blame] | 3940 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3941 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
Jesse Barnes | 01cb9ea | 2010-10-07 16:01:12 -0700 | [diff] [blame] | 3942 | |
Damien Lespiau | 1b46963 | 2012-12-13 16:09:01 +0000 | [diff] [blame] | 3943 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
| 3944 | return connector_status_disconnected; |
| 3945 | |
Keith Packard | 26d61aa | 2011-07-25 20:01:09 -0700 | [diff] [blame] | 3946 | return intel_dp_detect_dpcd(intel_dp); |
Zhenyu Wang | 5eb08b6 | 2009-07-24 01:00:31 +0800 | [diff] [blame] | 3947 | } |
| 3948 | |
Dave Airlie | 2a592be | 2014-09-01 16:58:12 +1000 | [diff] [blame] | 3949 | static int g4x_digital_port_connected(struct drm_device *dev, |
| 3950 | struct intel_digital_port *intel_dig_port) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3951 | { |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3952 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 10f76a3 | 2012-05-11 18:01:32 +0100 | [diff] [blame] | 3953 | uint32_t bit; |
Zhenyu Wang | 5eb08b6 | 2009-07-24 01:00:31 +0800 | [diff] [blame] | 3954 | |
Todd Previte | 232a6ee | 2014-01-23 00:13:41 -0700 | [diff] [blame] | 3955 | if (IS_VALLEYVIEW(dev)) { |
| 3956 | switch (intel_dig_port->port) { |
| 3957 | case PORT_B: |
| 3958 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; |
| 3959 | break; |
| 3960 | case PORT_C: |
| 3961 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; |
| 3962 | break; |
| 3963 | case PORT_D: |
| 3964 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; |
| 3965 | break; |
| 3966 | default: |
Dave Airlie | 2a592be | 2014-09-01 16:58:12 +1000 | [diff] [blame] | 3967 | return -EINVAL; |
Todd Previte | 232a6ee | 2014-01-23 00:13:41 -0700 | [diff] [blame] | 3968 | } |
| 3969 | } else { |
| 3970 | switch (intel_dig_port->port) { |
| 3971 | case PORT_B: |
| 3972 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; |
| 3973 | break; |
| 3974 | case PORT_C: |
| 3975 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; |
| 3976 | break; |
| 3977 | case PORT_D: |
| 3978 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; |
| 3979 | break; |
| 3980 | default: |
Dave Airlie | 2a592be | 2014-09-01 16:58:12 +1000 | [diff] [blame] | 3981 | return -EINVAL; |
Todd Previte | 232a6ee | 2014-01-23 00:13:41 -0700 | [diff] [blame] | 3982 | } |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 3983 | } |
| 3984 | |
Chris Wilson | 10f76a3 | 2012-05-11 18:01:32 +0100 | [diff] [blame] | 3985 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
Dave Airlie | 2a592be | 2014-09-01 16:58:12 +1000 | [diff] [blame] | 3986 | return 0; |
| 3987 | return 1; |
| 3988 | } |
| 3989 | |
| 3990 | static enum drm_connector_status |
| 3991 | g4x_dp_detect(struct intel_dp *intel_dp) |
| 3992 | { |
| 3993 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 3994 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 3995 | int ret; |
| 3996 | |
| 3997 | /* Can't disconnect eDP, but you can close the lid... */ |
| 3998 | if (is_edp(intel_dp)) { |
| 3999 | enum drm_connector_status status; |
| 4000 | |
| 4001 | status = intel_panel_detect(dev); |
| 4002 | if (status == connector_status_unknown) |
| 4003 | status = connector_status_connected; |
| 4004 | return status; |
| 4005 | } |
| 4006 | |
| 4007 | ret = g4x_digital_port_connected(dev, intel_dig_port); |
| 4008 | if (ret == -EINVAL) |
| 4009 | return connector_status_unknown; |
| 4010 | else if (ret == 0) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4011 | return connector_status_disconnected; |
| 4012 | |
Keith Packard | 26d61aa | 2011-07-25 20:01:09 -0700 | [diff] [blame] | 4013 | return intel_dp_detect_dpcd(intel_dp); |
Zhenyu Wang | a9756bb | 2010-09-19 13:09:06 +0800 | [diff] [blame] | 4014 | } |
| 4015 | |
Keith Packard | 8c241fe | 2011-09-28 16:38:44 -0700 | [diff] [blame] | 4016 | static struct edid * |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4017 | intel_dp_get_edid(struct intel_dp *intel_dp) |
Keith Packard | 8c241fe | 2011-09-28 16:38:44 -0700 | [diff] [blame] | 4018 | { |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4019 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
Keith Packard | 8c241fe | 2011-09-28 16:38:44 -0700 | [diff] [blame] | 4020 | |
Jani Nikula | 9cd300e | 2012-10-19 14:51:52 +0300 | [diff] [blame] | 4021 | /* use cached edid if we have one */ |
| 4022 | if (intel_connector->edid) { |
Jani Nikula | 9cd300e | 2012-10-19 14:51:52 +0300 | [diff] [blame] | 4023 | /* invalid edid */ |
| 4024 | if (IS_ERR(intel_connector->edid)) |
Jesse Barnes | d6f24d0 | 2012-06-14 15:28:33 -0400 | [diff] [blame] | 4025 | return NULL; |
| 4026 | |
Jani Nikula | 55e9ede | 2013-10-01 10:38:54 +0300 | [diff] [blame] | 4027 | return drm_edid_duplicate(intel_connector->edid); |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4028 | } else |
| 4029 | return drm_get_edid(&intel_connector->base, |
| 4030 | &intel_dp->aux.ddc); |
Keith Packard | 8c241fe | 2011-09-28 16:38:44 -0700 | [diff] [blame] | 4031 | } |
| 4032 | |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4033 | static void |
| 4034 | intel_dp_set_edid(struct intel_dp *intel_dp) |
Keith Packard | 8c241fe | 2011-09-28 16:38:44 -0700 | [diff] [blame] | 4035 | { |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4036 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
| 4037 | struct edid *edid; |
Keith Packard | 8c241fe | 2011-09-28 16:38:44 -0700 | [diff] [blame] | 4038 | |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4039 | edid = intel_dp_get_edid(intel_dp); |
| 4040 | intel_connector->detect_edid = edid; |
Jani Nikula | 9cd300e | 2012-10-19 14:51:52 +0300 | [diff] [blame] | 4041 | |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4042 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) |
| 4043 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; |
| 4044 | else |
| 4045 | intel_dp->has_audio = drm_detect_monitor_audio(edid); |
| 4046 | } |
Jesse Barnes | d6f24d0 | 2012-06-14 15:28:33 -0400 | [diff] [blame] | 4047 | |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4048 | static void |
| 4049 | intel_dp_unset_edid(struct intel_dp *intel_dp) |
| 4050 | { |
| 4051 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
| 4052 | |
| 4053 | kfree(intel_connector->detect_edid); |
| 4054 | intel_connector->detect_edid = NULL; |
| 4055 | |
| 4056 | intel_dp->has_audio = false; |
| 4057 | } |
| 4058 | |
| 4059 | static enum intel_display_power_domain |
| 4060 | intel_dp_power_get(struct intel_dp *dp) |
| 4061 | { |
| 4062 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; |
| 4063 | enum intel_display_power_domain power_domain; |
| 4064 | |
| 4065 | power_domain = intel_display_port_power_domain(encoder); |
| 4066 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); |
| 4067 | |
| 4068 | return power_domain; |
| 4069 | } |
| 4070 | |
| 4071 | static void |
| 4072 | intel_dp_power_put(struct intel_dp *dp, |
| 4073 | enum intel_display_power_domain power_domain) |
| 4074 | { |
| 4075 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; |
| 4076 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); |
Keith Packard | 8c241fe | 2011-09-28 16:38:44 -0700 | [diff] [blame] | 4077 | } |
| 4078 | |
Zhenyu Wang | a9756bb | 2010-09-19 13:09:06 +0800 | [diff] [blame] | 4079 | static enum drm_connector_status |
| 4080 | intel_dp_detect(struct drm_connector *connector, bool force) |
| 4081 | { |
| 4082 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
Paulo Zanoni | d63885d | 2012-10-26 19:05:49 -0200 | [diff] [blame] | 4083 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 4084 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
Paulo Zanoni | fa90ece | 2012-10-26 19:05:44 -0200 | [diff] [blame] | 4085 | struct drm_device *dev = connector->dev; |
Zhenyu Wang | a9756bb | 2010-09-19 13:09:06 +0800 | [diff] [blame] | 4086 | enum drm_connector_status status; |
Imre Deak | 671dedd | 2014-03-05 16:20:53 +0200 | [diff] [blame] | 4087 | enum intel_display_power_domain power_domain; |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4088 | bool ret; |
Zhenyu Wang | a9756bb | 2010-09-19 13:09:06 +0800 | [diff] [blame] | 4089 | |
Chris Wilson | 164c859 | 2013-07-20 20:27:08 +0100 | [diff] [blame] | 4090 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
Jani Nikula | c23cc41 | 2014-06-03 14:56:17 +0300 | [diff] [blame] | 4091 | connector->base.id, connector->name); |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4092 | intel_dp_unset_edid(intel_dp); |
Chris Wilson | 164c859 | 2013-07-20 20:27:08 +0100 | [diff] [blame] | 4093 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4094 | if (intel_dp->is_mst) { |
| 4095 | /* MST devices are disconnected from a monitor POV */ |
| 4096 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
| 4097 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4098 | return connector_status_disconnected; |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4099 | } |
| 4100 | |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4101 | power_domain = intel_dp_power_get(intel_dp); |
Zhenyu Wang | a9756bb | 2010-09-19 13:09:06 +0800 | [diff] [blame] | 4102 | |
Chris Wilson | d410b56 | 2014-09-02 20:03:59 +0100 | [diff] [blame] | 4103 | /* Can't disconnect eDP, but you can close the lid... */ |
| 4104 | if (is_edp(intel_dp)) |
| 4105 | status = edp_detect(intel_dp); |
| 4106 | else if (HAS_PCH_SPLIT(dev)) |
Zhenyu Wang | a9756bb | 2010-09-19 13:09:06 +0800 | [diff] [blame] | 4107 | status = ironlake_dp_detect(intel_dp); |
| 4108 | else |
| 4109 | status = g4x_dp_detect(intel_dp); |
| 4110 | if (status != connector_status_connected) |
Paulo Zanoni | c8c8fb3 | 2013-11-27 18:21:54 -0200 | [diff] [blame] | 4111 | goto out; |
Zhenyu Wang | a9756bb | 2010-09-19 13:09:06 +0800 | [diff] [blame] | 4112 | |
Adam Jackson | 0d19832 | 2012-05-14 16:05:47 -0400 | [diff] [blame] | 4113 | intel_dp_probe_oui(intel_dp); |
| 4114 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4115 | ret = intel_dp_probe_mst(intel_dp); |
| 4116 | if (ret) { |
| 4117 | /* if we are in MST mode then this connector |
| 4118 | won't appear connected or have anything with EDID on it */ |
| 4119 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
| 4120 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
| 4121 | status = connector_status_disconnected; |
| 4122 | goto out; |
| 4123 | } |
| 4124 | |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4125 | intel_dp_set_edid(intel_dp); |
Zhenyu Wang | a9756bb | 2010-09-19 13:09:06 +0800 | [diff] [blame] | 4126 | |
Paulo Zanoni | d63885d | 2012-10-26 19:05:49 -0200 | [diff] [blame] | 4127 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
| 4128 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
Paulo Zanoni | c8c8fb3 | 2013-11-27 18:21:54 -0200 | [diff] [blame] | 4129 | status = connector_status_connected; |
| 4130 | |
| 4131 | out: |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4132 | intel_dp_power_put(intel_dp, power_domain); |
Paulo Zanoni | c8c8fb3 | 2013-11-27 18:21:54 -0200 | [diff] [blame] | 4133 | return status; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4134 | } |
| 4135 | |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4136 | static void |
| 4137 | intel_dp_force(struct drm_connector *connector) |
| 4138 | { |
| 4139 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
| 4140 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
| 4141 | enum intel_display_power_domain power_domain; |
| 4142 | |
| 4143 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
| 4144 | connector->base.id, connector->name); |
| 4145 | intel_dp_unset_edid(intel_dp); |
| 4146 | |
| 4147 | if (connector->status != connector_status_connected) |
| 4148 | return; |
| 4149 | |
| 4150 | power_domain = intel_dp_power_get(intel_dp); |
| 4151 | |
| 4152 | intel_dp_set_edid(intel_dp); |
| 4153 | |
| 4154 | intel_dp_power_put(intel_dp, power_domain); |
| 4155 | |
| 4156 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
| 4157 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
| 4158 | } |
| 4159 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4160 | static int intel_dp_get_modes(struct drm_connector *connector) |
| 4161 | { |
Jani Nikula | dd06f90 | 2012-10-19 14:51:50 +0300 | [diff] [blame] | 4162 | struct intel_connector *intel_connector = to_intel_connector(connector); |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4163 | struct edid *edid; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4164 | |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4165 | edid = intel_connector->detect_edid; |
| 4166 | if (edid) { |
| 4167 | int ret = intel_connector_update_modes(connector, edid); |
| 4168 | if (ret) |
| 4169 | return ret; |
| 4170 | } |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 4171 | |
Jani Nikula | f8779fd | 2012-10-19 14:51:48 +0300 | [diff] [blame] | 4172 | /* if eDP has no EDID, fall back to fixed mode */ |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4173 | if (is_edp(intel_attached_dp(connector)) && |
| 4174 | intel_connector->panel.fixed_mode) { |
Jani Nikula | f8779fd | 2012-10-19 14:51:48 +0300 | [diff] [blame] | 4175 | struct drm_display_mode *mode; |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4176 | |
| 4177 | mode = drm_mode_duplicate(connector->dev, |
Jani Nikula | dd06f90 | 2012-10-19 14:51:50 +0300 | [diff] [blame] | 4178 | intel_connector->panel.fixed_mode); |
Jani Nikula | f8779fd | 2012-10-19 14:51:48 +0300 | [diff] [blame] | 4179 | if (mode) { |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 4180 | drm_mode_probed_add(connector, mode); |
| 4181 | return 1; |
| 4182 | } |
| 4183 | } |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4184 | |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 4185 | return 0; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4186 | } |
| 4187 | |
Chris Wilson | 1aad7ac | 2011-02-09 18:46:58 +0000 | [diff] [blame] | 4188 | static bool |
| 4189 | intel_dp_detect_audio(struct drm_connector *connector) |
| 4190 | { |
Chris Wilson | 1aad7ac | 2011-02-09 18:46:58 +0000 | [diff] [blame] | 4191 | bool has_audio = false; |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4192 | struct edid *edid; |
Chris Wilson | 1aad7ac | 2011-02-09 18:46:58 +0000 | [diff] [blame] | 4193 | |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4194 | edid = to_intel_connector(connector)->detect_edid; |
| 4195 | if (edid) |
Chris Wilson | 1aad7ac | 2011-02-09 18:46:58 +0000 | [diff] [blame] | 4196 | has_audio = drm_detect_monitor_audio(edid); |
Imre Deak | 671dedd | 2014-03-05 16:20:53 +0200 | [diff] [blame] | 4197 | |
Chris Wilson | 1aad7ac | 2011-02-09 18:46:58 +0000 | [diff] [blame] | 4198 | return has_audio; |
| 4199 | } |
| 4200 | |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4201 | static int |
| 4202 | intel_dp_set_property(struct drm_connector *connector, |
| 4203 | struct drm_property *property, |
| 4204 | uint64_t val) |
| 4205 | { |
Chris Wilson | e953fd7 | 2011-02-21 22:23:52 +0000 | [diff] [blame] | 4206 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
Yuly Novikov | 53b4183 | 2012-10-26 12:04:00 +0300 | [diff] [blame] | 4207 | struct intel_connector *intel_connector = to_intel_connector(connector); |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 4208 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
| 4209 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4210 | int ret; |
| 4211 | |
Rob Clark | 662595d | 2012-10-11 20:36:04 -0500 | [diff] [blame] | 4212 | ret = drm_object_property_set_value(&connector->base, property, val); |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4213 | if (ret) |
| 4214 | return ret; |
| 4215 | |
Chris Wilson | 3f43c48 | 2011-05-12 22:17:24 +0100 | [diff] [blame] | 4216 | if (property == dev_priv->force_audio_property) { |
Chris Wilson | 1aad7ac | 2011-02-09 18:46:58 +0000 | [diff] [blame] | 4217 | int i = val; |
| 4218 | bool has_audio; |
| 4219 | |
| 4220 | if (i == intel_dp->force_audio) |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4221 | return 0; |
| 4222 | |
Chris Wilson | 1aad7ac | 2011-02-09 18:46:58 +0000 | [diff] [blame] | 4223 | intel_dp->force_audio = i; |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4224 | |
Daniel Vetter | c3e5f67 | 2012-02-23 17:14:47 +0100 | [diff] [blame] | 4225 | if (i == HDMI_AUDIO_AUTO) |
Chris Wilson | 1aad7ac | 2011-02-09 18:46:58 +0000 | [diff] [blame] | 4226 | has_audio = intel_dp_detect_audio(connector); |
| 4227 | else |
Daniel Vetter | c3e5f67 | 2012-02-23 17:14:47 +0100 | [diff] [blame] | 4228 | has_audio = (i == HDMI_AUDIO_ON); |
Chris Wilson | 1aad7ac | 2011-02-09 18:46:58 +0000 | [diff] [blame] | 4229 | |
| 4230 | if (has_audio == intel_dp->has_audio) |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4231 | return 0; |
| 4232 | |
Chris Wilson | 1aad7ac | 2011-02-09 18:46:58 +0000 | [diff] [blame] | 4233 | intel_dp->has_audio = has_audio; |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4234 | goto done; |
| 4235 | } |
| 4236 | |
Chris Wilson | e953fd7 | 2011-02-21 22:23:52 +0000 | [diff] [blame] | 4237 | if (property == dev_priv->broadcast_rgb_property) { |
Daniel Vetter | ae4edb8 | 2013-04-22 17:07:23 +0200 | [diff] [blame] | 4238 | bool old_auto = intel_dp->color_range_auto; |
| 4239 | uint32_t old_range = intel_dp->color_range; |
| 4240 | |
Ville Syrjälä | 55bc60d | 2013-01-17 16:31:29 +0200 | [diff] [blame] | 4241 | switch (val) { |
| 4242 | case INTEL_BROADCAST_RGB_AUTO: |
| 4243 | intel_dp->color_range_auto = true; |
| 4244 | break; |
| 4245 | case INTEL_BROADCAST_RGB_FULL: |
| 4246 | intel_dp->color_range_auto = false; |
| 4247 | intel_dp->color_range = 0; |
| 4248 | break; |
| 4249 | case INTEL_BROADCAST_RGB_LIMITED: |
| 4250 | intel_dp->color_range_auto = false; |
| 4251 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
| 4252 | break; |
| 4253 | default: |
| 4254 | return -EINVAL; |
| 4255 | } |
Daniel Vetter | ae4edb8 | 2013-04-22 17:07:23 +0200 | [diff] [blame] | 4256 | |
| 4257 | if (old_auto == intel_dp->color_range_auto && |
| 4258 | old_range == intel_dp->color_range) |
| 4259 | return 0; |
| 4260 | |
Chris Wilson | e953fd7 | 2011-02-21 22:23:52 +0000 | [diff] [blame] | 4261 | goto done; |
| 4262 | } |
| 4263 | |
Yuly Novikov | 53b4183 | 2012-10-26 12:04:00 +0300 | [diff] [blame] | 4264 | if (is_edp(intel_dp) && |
| 4265 | property == connector->dev->mode_config.scaling_mode_property) { |
| 4266 | if (val == DRM_MODE_SCALE_NONE) { |
| 4267 | DRM_DEBUG_KMS("no scaling not supported\n"); |
| 4268 | return -EINVAL; |
| 4269 | } |
| 4270 | |
| 4271 | if (intel_connector->panel.fitting_mode == val) { |
| 4272 | /* the eDP scaling property is not changed */ |
| 4273 | return 0; |
| 4274 | } |
| 4275 | intel_connector->panel.fitting_mode = val; |
| 4276 | |
| 4277 | goto done; |
| 4278 | } |
| 4279 | |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4280 | return -EINVAL; |
| 4281 | |
| 4282 | done: |
Chris Wilson | c0c36b94 | 2012-12-19 16:08:43 +0000 | [diff] [blame] | 4283 | if (intel_encoder->base.crtc) |
| 4284 | intel_crtc_restore_mode(intel_encoder->base.crtc); |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4285 | |
| 4286 | return 0; |
| 4287 | } |
| 4288 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4289 | static void |
Paulo Zanoni | 73845ad | 2013-06-12 17:27:30 -0300 | [diff] [blame] | 4290 | intel_dp_connector_destroy(struct drm_connector *connector) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4291 | { |
Jani Nikula | 1d50870 | 2012-10-19 14:51:49 +0300 | [diff] [blame] | 4292 | struct intel_connector *intel_connector = to_intel_connector(connector); |
Matthew Garrett | aaa6fd2 | 2011-08-12 12:11:33 +0200 | [diff] [blame] | 4293 | |
Chris Wilson | 10e972d | 2014-09-04 21:43:45 +0100 | [diff] [blame] | 4294 | kfree(intel_connector->detect_edid); |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4295 | |
Jani Nikula | 9cd300e | 2012-10-19 14:51:52 +0300 | [diff] [blame] | 4296 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
| 4297 | kfree(intel_connector->edid); |
| 4298 | |
Paulo Zanoni | acd8db10 | 2013-06-12 17:27:23 -0300 | [diff] [blame] | 4299 | /* Can't call is_edp() since the encoder may have been destroyed |
| 4300 | * already. */ |
| 4301 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) |
Jani Nikula | 1d50870 | 2012-10-19 14:51:49 +0300 | [diff] [blame] | 4302 | intel_panel_fini(&intel_connector->panel); |
Matthew Garrett | aaa6fd2 | 2011-08-12 12:11:33 +0200 | [diff] [blame] | 4303 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4304 | drm_connector_cleanup(connector); |
Zhenyu Wang | 55f78c4 | 2010-03-29 16:13:57 +0800 | [diff] [blame] | 4305 | kfree(connector); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4306 | } |
| 4307 | |
Paulo Zanoni | 00c09d7 | 2012-10-26 19:05:52 -0200 | [diff] [blame] | 4308 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
Daniel Vetter | 24d0592 | 2010-08-20 18:08:28 +0200 | [diff] [blame] | 4309 | { |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 4310 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
| 4311 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
Daniel Vetter | 24d0592 | 2010-08-20 18:08:28 +0200 | [diff] [blame] | 4312 | |
Dave Airlie | 4f71d0c | 2014-06-04 16:02:28 +1000 | [diff] [blame] | 4313 | drm_dp_aux_unregister(&intel_dp->aux); |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4314 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 4315 | if (is_edp(intel_dp)) { |
| 4316 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
Ville Syrjälä | 951468f | 2014-09-04 14:55:31 +0300 | [diff] [blame] | 4317 | /* |
| 4318 | * vdd might still be enabled do to the delayed vdd off. |
| 4319 | * Make sure vdd is actually turned off here. |
| 4320 | */ |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 4321 | pps_lock(intel_dp); |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 4322 | edp_panel_vdd_off_sync(intel_dp); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 4323 | pps_unlock(intel_dp); |
| 4324 | |
Clint Taylor | 01527b3 | 2014-07-07 13:01:46 -0700 | [diff] [blame] | 4325 | if (intel_dp->edp_notifier.notifier_call) { |
| 4326 | unregister_reboot_notifier(&intel_dp->edp_notifier); |
| 4327 | intel_dp->edp_notifier.notifier_call = NULL; |
| 4328 | } |
Keith Packard | bd94315 | 2011-09-18 23:09:52 -0700 | [diff] [blame] | 4329 | } |
Imre Deak | c8bd0e4 | 2014-12-12 17:57:38 +0200 | [diff] [blame] | 4330 | drm_encoder_cleanup(encoder); |
Paulo Zanoni | da63a9f | 2012-10-26 19:05:46 -0200 | [diff] [blame] | 4331 | kfree(intel_dig_port); |
Daniel Vetter | 24d0592 | 2010-08-20 18:08:28 +0200 | [diff] [blame] | 4332 | } |
| 4333 | |
Imre Deak | 07f9cd0 | 2014-08-18 14:42:45 +0300 | [diff] [blame] | 4334 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
| 4335 | { |
| 4336 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); |
| 4337 | |
| 4338 | if (!is_edp(intel_dp)) |
| 4339 | return; |
| 4340 | |
Ville Syrjälä | 951468f | 2014-09-04 14:55:31 +0300 | [diff] [blame] | 4341 | /* |
| 4342 | * vdd might still be enabled do to the delayed vdd off. |
| 4343 | * Make sure vdd is actually turned off here. |
| 4344 | */ |
Ville Syrjälä | afa4e53 | 2014-11-25 15:43:48 +0200 | [diff] [blame] | 4345 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 4346 | pps_lock(intel_dp); |
Imre Deak | 07f9cd0 | 2014-08-18 14:42:45 +0300 | [diff] [blame] | 4347 | edp_panel_vdd_off_sync(intel_dp); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 4348 | pps_unlock(intel_dp); |
Imre Deak | 07f9cd0 | 2014-08-18 14:42:45 +0300 | [diff] [blame] | 4349 | } |
| 4350 | |
Ville Syrjälä | 49e6bc5 | 2014-10-28 16:15:52 +0200 | [diff] [blame] | 4351 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
| 4352 | { |
| 4353 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
| 4354 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 4355 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4356 | enum intel_display_power_domain power_domain; |
| 4357 | |
| 4358 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 4359 | |
| 4360 | if (!edp_have_panel_vdd(intel_dp)) |
| 4361 | return; |
| 4362 | |
| 4363 | /* |
| 4364 | * The VDD bit needs a power domain reference, so if the bit is |
| 4365 | * already enabled when we boot or resume, grab this reference and |
| 4366 | * schedule a vdd off, so we don't hold on to the reference |
| 4367 | * indefinitely. |
| 4368 | */ |
| 4369 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); |
| 4370 | power_domain = intel_display_port_power_domain(&intel_dig_port->base); |
| 4371 | intel_display_power_get(dev_priv, power_domain); |
| 4372 | |
| 4373 | edp_panel_vdd_schedule_off(intel_dp); |
| 4374 | } |
| 4375 | |
Imre Deak | 6d93c0c | 2014-07-31 14:03:36 +0300 | [diff] [blame] | 4376 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
| 4377 | { |
Ville Syrjälä | 49e6bc5 | 2014-10-28 16:15:52 +0200 | [diff] [blame] | 4378 | struct intel_dp *intel_dp; |
| 4379 | |
| 4380 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) |
| 4381 | return; |
| 4382 | |
| 4383 | intel_dp = enc_to_intel_dp(encoder); |
| 4384 | |
| 4385 | pps_lock(intel_dp); |
| 4386 | |
| 4387 | /* |
| 4388 | * Read out the current power sequencer assignment, |
| 4389 | * in case the BIOS did something with it. |
| 4390 | */ |
| 4391 | if (IS_VALLEYVIEW(encoder->dev)) |
| 4392 | vlv_initial_power_sequencer_setup(intel_dp); |
| 4393 | |
| 4394 | intel_edp_panel_vdd_sanitize(intel_dp); |
| 4395 | |
| 4396 | pps_unlock(intel_dp); |
Imre Deak | 6d93c0c | 2014-07-31 14:03:36 +0300 | [diff] [blame] | 4397 | } |
| 4398 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4399 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
Daniel Vetter | 2bd2ad6 | 2012-09-06 22:15:41 +0200 | [diff] [blame] | 4400 | .dpms = intel_connector_dpms, |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4401 | .detect = intel_dp_detect, |
Chris Wilson | beb6060 | 2014-09-02 20:04:00 +0100 | [diff] [blame] | 4402 | .force = intel_dp_force, |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4403 | .fill_modes = drm_helper_probe_single_connector_modes, |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4404 | .set_property = intel_dp_set_property, |
Matt Roper | 2545e4a | 2015-01-22 16:51:27 -0800 | [diff] [blame] | 4405 | .atomic_get_property = intel_connector_atomic_get_property, |
Paulo Zanoni | 73845ad | 2013-06-12 17:27:30 -0300 | [diff] [blame] | 4406 | .destroy = intel_dp_connector_destroy, |
Matt Roper | c6f95f2 | 2015-01-22 16:50:32 -0800 | [diff] [blame] | 4407 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4408 | }; |
| 4409 | |
| 4410 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { |
| 4411 | .get_modes = intel_dp_get_modes, |
| 4412 | .mode_valid = intel_dp_mode_valid, |
Chris Wilson | df0e924 | 2010-09-09 16:20:55 +0100 | [diff] [blame] | 4413 | .best_encoder = intel_best_encoder, |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4414 | }; |
| 4415 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4416 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
Imre Deak | 6d93c0c | 2014-07-31 14:03:36 +0300 | [diff] [blame] | 4417 | .reset = intel_dp_encoder_reset, |
Daniel Vetter | 24d0592 | 2010-08-20 18:08:28 +0200 | [diff] [blame] | 4418 | .destroy = intel_dp_encoder_destroy, |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 4419 | }; |
| 4420 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4421 | void |
Eric Anholt | 21d40d3 | 2010-03-25 11:11:14 -0700 | [diff] [blame] | 4422 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
Keith Packard | c8110e5 | 2009-05-06 11:51:10 -0700 | [diff] [blame] | 4423 | { |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4424 | return; |
Keith Packard | c8110e5 | 2009-05-06 11:51:10 -0700 | [diff] [blame] | 4425 | } |
| 4426 | |
Daniel Vetter | b2c5c18 | 2015-01-23 06:00:31 +0100 | [diff] [blame] | 4427 | enum irqreturn |
Dave Airlie | 13cf550 | 2014-06-18 11:29:35 +1000 | [diff] [blame] | 4428 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
| 4429 | { |
| 4430 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
Imre Deak | 1c767b3 | 2014-08-18 14:42:42 +0300 | [diff] [blame] | 4431 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4432 | struct drm_device *dev = intel_dig_port->base.base.dev; |
| 4433 | struct drm_i915_private *dev_priv = dev->dev_private; |
Imre Deak | 1c767b3 | 2014-08-18 14:42:42 +0300 | [diff] [blame] | 4434 | enum intel_display_power_domain power_domain; |
Daniel Vetter | b2c5c18 | 2015-01-23 06:00:31 +0100 | [diff] [blame] | 4435 | enum irqreturn ret = IRQ_NONE; |
Imre Deak | 1c767b3 | 2014-08-18 14:42:42 +0300 | [diff] [blame] | 4436 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4437 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
| 4438 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; |
Dave Airlie | 13cf550 | 2014-06-18 11:29:35 +1000 | [diff] [blame] | 4439 | |
Ville Syrjälä | 7a7f84c | 2014-10-16 20:46:10 +0300 | [diff] [blame] | 4440 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
| 4441 | /* |
| 4442 | * vdd off can generate a long pulse on eDP which |
| 4443 | * would require vdd on to handle it, and thus we |
| 4444 | * would end up in an endless cycle of |
| 4445 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." |
| 4446 | */ |
| 4447 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", |
| 4448 | port_name(intel_dig_port->port)); |
| 4449 | return false; |
| 4450 | } |
| 4451 | |
Ville Syrjälä | 26fbb77 | 2014-08-11 18:37:37 +0300 | [diff] [blame] | 4452 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
| 4453 | port_name(intel_dig_port->port), |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4454 | long_hpd ? "long" : "short"); |
Dave Airlie | 13cf550 | 2014-06-18 11:29:35 +1000 | [diff] [blame] | 4455 | |
Imre Deak | 1c767b3 | 2014-08-18 14:42:42 +0300 | [diff] [blame] | 4456 | power_domain = intel_display_port_power_domain(intel_encoder); |
| 4457 | intel_display_power_get(dev_priv, power_domain); |
| 4458 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4459 | if (long_hpd) { |
Dave Airlie | 2a592be | 2014-09-01 16:58:12 +1000 | [diff] [blame] | 4460 | |
| 4461 | if (HAS_PCH_SPLIT(dev)) { |
| 4462 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
| 4463 | goto mst_fail; |
| 4464 | } else { |
| 4465 | if (g4x_digital_port_connected(dev, intel_dig_port) != 1) |
| 4466 | goto mst_fail; |
| 4467 | } |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4468 | |
| 4469 | if (!intel_dp_get_dpcd(intel_dp)) { |
| 4470 | goto mst_fail; |
| 4471 | } |
| 4472 | |
| 4473 | intel_dp_probe_oui(intel_dp); |
| 4474 | |
| 4475 | if (!intel_dp_probe_mst(intel_dp)) |
| 4476 | goto mst_fail; |
| 4477 | |
| 4478 | } else { |
| 4479 | if (intel_dp->is_mst) { |
Imre Deak | 1c767b3 | 2014-08-18 14:42:42 +0300 | [diff] [blame] | 4480 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4481 | goto mst_fail; |
| 4482 | } |
| 4483 | |
| 4484 | if (!intel_dp->is_mst) { |
| 4485 | /* |
| 4486 | * we'll check the link status via the normal hot plug path later - |
| 4487 | * but for short hpds we should check it now |
| 4488 | */ |
Dave Airlie | 5b215bc | 2014-08-05 10:40:20 +1000 | [diff] [blame] | 4489 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4490 | intel_dp_check_link_status(intel_dp); |
Dave Airlie | 5b215bc | 2014-08-05 10:40:20 +1000 | [diff] [blame] | 4491 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4492 | } |
| 4493 | } |
Daniel Vetter | b2c5c18 | 2015-01-23 06:00:31 +0100 | [diff] [blame] | 4494 | |
| 4495 | ret = IRQ_HANDLED; |
| 4496 | |
Imre Deak | 1c767b3 | 2014-08-18 14:42:42 +0300 | [diff] [blame] | 4497 | goto put_power; |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4498 | mst_fail: |
| 4499 | /* if we were in MST mode, and device is not there get out of MST mode */ |
| 4500 | if (intel_dp->is_mst) { |
| 4501 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); |
| 4502 | intel_dp->is_mst = false; |
| 4503 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); |
| 4504 | } |
Imre Deak | 1c767b3 | 2014-08-18 14:42:42 +0300 | [diff] [blame] | 4505 | put_power: |
| 4506 | intel_display_power_put(dev_priv, power_domain); |
| 4507 | |
| 4508 | return ret; |
Dave Airlie | 13cf550 | 2014-06-18 11:29:35 +1000 | [diff] [blame] | 4509 | } |
| 4510 | |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 4511 | /* Return which DP Port should be selected for Transcoder DP control */ |
| 4512 | int |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 4513 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 4514 | { |
| 4515 | struct drm_device *dev = crtc->dev; |
Paulo Zanoni | fa90ece | 2012-10-26 19:05:44 -0200 | [diff] [blame] | 4516 | struct intel_encoder *intel_encoder; |
| 4517 | struct intel_dp *intel_dp; |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 4518 | |
Paulo Zanoni | fa90ece | 2012-10-26 19:05:44 -0200 | [diff] [blame] | 4519 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
| 4520 | intel_dp = enc_to_intel_dp(&intel_encoder->base); |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 4521 | |
Paulo Zanoni | fa90ece | 2012-10-26 19:05:44 -0200 | [diff] [blame] | 4522 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
| 4523 | intel_encoder->type == INTEL_OUTPUT_EDP) |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 4524 | return intel_dp->output_reg; |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 4525 | } |
Chris Wilson | ea5b213 | 2010-08-04 13:50:23 +0100 | [diff] [blame] | 4526 | |
Zhenyu Wang | e3421a1 | 2010-04-08 09:43:27 +0800 | [diff] [blame] | 4527 | return -1; |
| 4528 | } |
| 4529 | |
Zhao Yakui | 36e83a1 | 2010-06-12 14:32:21 +0800 | [diff] [blame] | 4530 | /* check the VBT to see whether the eDP is on DP-D port */ |
Ville Syrjälä | 5d8a775 | 2013-11-01 18:22:39 +0200 | [diff] [blame] | 4531 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
Zhao Yakui | 36e83a1 | 2010-06-12 14:32:21 +0800 | [diff] [blame] | 4532 | { |
| 4533 | struct drm_i915_private *dev_priv = dev->dev_private; |
Paulo Zanoni | 768f69c | 2013-09-11 18:02:47 -0300 | [diff] [blame] | 4534 | union child_device_config *p_child; |
Zhao Yakui | 36e83a1 | 2010-06-12 14:32:21 +0800 | [diff] [blame] | 4535 | int i; |
Ville Syrjälä | 5d8a775 | 2013-11-01 18:22:39 +0200 | [diff] [blame] | 4536 | static const short port_mapping[] = { |
| 4537 | [PORT_B] = PORT_IDPB, |
| 4538 | [PORT_C] = PORT_IDPC, |
| 4539 | [PORT_D] = PORT_IDPD, |
| 4540 | }; |
Zhao Yakui | 36e83a1 | 2010-06-12 14:32:21 +0800 | [diff] [blame] | 4541 | |
Ville Syrjälä | 3b32a35 | 2013-11-01 18:22:41 +0200 | [diff] [blame] | 4542 | if (port == PORT_A) |
| 4543 | return true; |
| 4544 | |
Rodrigo Vivi | 41aa344 | 2013-05-09 20:03:18 -0300 | [diff] [blame] | 4545 | if (!dev_priv->vbt.child_dev_num) |
Zhao Yakui | 36e83a1 | 2010-06-12 14:32:21 +0800 | [diff] [blame] | 4546 | return false; |
| 4547 | |
Rodrigo Vivi | 41aa344 | 2013-05-09 20:03:18 -0300 | [diff] [blame] | 4548 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
| 4549 | p_child = dev_priv->vbt.child_dev + i; |
Zhao Yakui | 36e83a1 | 2010-06-12 14:32:21 +0800 | [diff] [blame] | 4550 | |
Ville Syrjälä | 5d8a775 | 2013-11-01 18:22:39 +0200 | [diff] [blame] | 4551 | if (p_child->common.dvo_port == port_mapping[port] && |
Ville Syrjälä | f02586d | 2013-11-01 20:32:08 +0200 | [diff] [blame] | 4552 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
| 4553 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) |
Zhao Yakui | 36e83a1 | 2010-06-12 14:32:21 +0800 | [diff] [blame] | 4554 | return true; |
| 4555 | } |
| 4556 | return false; |
| 4557 | } |
| 4558 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 4559 | void |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4560 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
| 4561 | { |
Yuly Novikov | 53b4183 | 2012-10-26 12:04:00 +0300 | [diff] [blame] | 4562 | struct intel_connector *intel_connector = to_intel_connector(connector); |
| 4563 | |
Chris Wilson | 3f43c48 | 2011-05-12 22:17:24 +0100 | [diff] [blame] | 4564 | intel_attach_force_audio_property(connector); |
Chris Wilson | e953fd7 | 2011-02-21 22:23:52 +0000 | [diff] [blame] | 4565 | intel_attach_broadcast_rgb_property(connector); |
Ville Syrjälä | 55bc60d | 2013-01-17 16:31:29 +0200 | [diff] [blame] | 4566 | intel_dp->color_range_auto = true; |
Yuly Novikov | 53b4183 | 2012-10-26 12:04:00 +0300 | [diff] [blame] | 4567 | |
| 4568 | if (is_edp(intel_dp)) { |
| 4569 | drm_mode_create_scaling_mode_property(connector->dev); |
Rob Clark | 6de6d84 | 2012-10-11 20:36:04 -0500 | [diff] [blame] | 4570 | drm_object_attach_property( |
| 4571 | &connector->base, |
Yuly Novikov | 53b4183 | 2012-10-26 12:04:00 +0300 | [diff] [blame] | 4572 | connector->dev->mode_config.scaling_mode_property, |
Yuly Novikov | 8e740cd | 2012-10-26 12:04:01 +0300 | [diff] [blame] | 4573 | DRM_MODE_SCALE_ASPECT); |
| 4574 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; |
Yuly Novikov | 53b4183 | 2012-10-26 12:04:00 +0300 | [diff] [blame] | 4575 | } |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 4576 | } |
| 4577 | |
Imre Deak | dada1a9 | 2014-01-29 13:25:41 +0200 | [diff] [blame] | 4578 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
| 4579 | { |
| 4580 | intel_dp->last_power_cycle = jiffies; |
| 4581 | intel_dp->last_power_on = jiffies; |
| 4582 | intel_dp->last_backlight_off = jiffies; |
| 4583 | } |
| 4584 | |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4585 | static void |
| 4586 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 4587 | struct intel_dp *intel_dp) |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4588 | { |
| 4589 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 4590 | struct edp_power_seq cur, vbt, spec, |
| 4591 | *final = &intel_dp->pps_delays; |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4592 | u32 pp_on, pp_off, pp_div, pp; |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 4593 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4594 | |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 4595 | lockdep_assert_held(&dev_priv->pps_mutex); |
| 4596 | |
Ville Syrjälä | 81ddbc6 | 2014-10-16 21:27:31 +0300 | [diff] [blame] | 4597 | /* already initialized? */ |
| 4598 | if (final->t11_t12 != 0) |
| 4599 | return; |
| 4600 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4601 | if (HAS_PCH_SPLIT(dev)) { |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 4602 | pp_ctrl_reg = PCH_PP_CONTROL; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4603 | pp_on_reg = PCH_PP_ON_DELAYS; |
| 4604 | pp_off_reg = PCH_PP_OFF_DELAYS; |
| 4605 | pp_div_reg = PCH_PP_DIVISOR; |
| 4606 | } else { |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 4607 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
| 4608 | |
| 4609 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
| 4610 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); |
| 4611 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); |
| 4612 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4613 | } |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4614 | |
| 4615 | /* Workaround: Need to write PP_CONTROL with the unlock key as |
| 4616 | * the very first thing. */ |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4617 | pp = ironlake_get_pp_control(intel_dp); |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 4618 | I915_WRITE(pp_ctrl_reg, pp); |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4619 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4620 | pp_on = I915_READ(pp_on_reg); |
| 4621 | pp_off = I915_READ(pp_off_reg); |
| 4622 | pp_div = I915_READ(pp_div_reg); |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4623 | |
| 4624 | /* Pull timing values out of registers */ |
| 4625 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> |
| 4626 | PANEL_POWER_UP_DELAY_SHIFT; |
| 4627 | |
| 4628 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> |
| 4629 | PANEL_LIGHT_ON_DELAY_SHIFT; |
| 4630 | |
| 4631 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> |
| 4632 | PANEL_LIGHT_OFF_DELAY_SHIFT; |
| 4633 | |
| 4634 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> |
| 4635 | PANEL_POWER_DOWN_DELAY_SHIFT; |
| 4636 | |
| 4637 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> |
| 4638 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; |
| 4639 | |
| 4640 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", |
| 4641 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); |
| 4642 | |
Rodrigo Vivi | 41aa344 | 2013-05-09 20:03:18 -0300 | [diff] [blame] | 4643 | vbt = dev_priv->vbt.edp_pps; |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4644 | |
| 4645 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of |
| 4646 | * our hw here, which are all in 100usec. */ |
| 4647 | spec.t1_t3 = 210 * 10; |
| 4648 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ |
| 4649 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ |
| 4650 | spec.t10 = 500 * 10; |
| 4651 | /* This one is special and actually in units of 100ms, but zero |
| 4652 | * based in the hw (so we need to add 100 ms). But the sw vbt |
| 4653 | * table multiplies it with 1000 to make it in units of 100usec, |
| 4654 | * too. */ |
| 4655 | spec.t11_t12 = (510 + 100) * 10; |
| 4656 | |
| 4657 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", |
| 4658 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); |
| 4659 | |
| 4660 | /* Use the max of the register settings and vbt. If both are |
| 4661 | * unset, fall back to the spec limits. */ |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 4662 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4663 | spec.field : \ |
| 4664 | max(cur.field, vbt.field)) |
| 4665 | assign_final(t1_t3); |
| 4666 | assign_final(t8); |
| 4667 | assign_final(t9); |
| 4668 | assign_final(t10); |
| 4669 | assign_final(t11_t12); |
| 4670 | #undef assign_final |
| 4671 | |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 4672 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4673 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
| 4674 | intel_dp->backlight_on_delay = get_delay(t8); |
| 4675 | intel_dp->backlight_off_delay = get_delay(t9); |
| 4676 | intel_dp->panel_power_down_delay = get_delay(t10); |
| 4677 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); |
| 4678 | #undef get_delay |
| 4679 | |
Jani Nikula | f30d26e | 2013-01-16 10:53:40 +0200 | [diff] [blame] | 4680 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
| 4681 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, |
| 4682 | intel_dp->panel_power_cycle_delay); |
| 4683 | |
| 4684 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", |
| 4685 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); |
Jani Nikula | f30d26e | 2013-01-16 10:53:40 +0200 | [diff] [blame] | 4686 | } |
| 4687 | |
| 4688 | static void |
| 4689 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 4690 | struct intel_dp *intel_dp) |
Jani Nikula | f30d26e | 2013-01-16 10:53:40 +0200 | [diff] [blame] | 4691 | { |
| 4692 | struct drm_i915_private *dev_priv = dev->dev_private; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4693 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
| 4694 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); |
| 4695 | int pp_on_reg, pp_off_reg, pp_div_reg; |
Ville Syrjälä | ad933b5 | 2014-08-18 22:15:56 +0300 | [diff] [blame] | 4696 | enum port port = dp_to_dig_port(intel_dp)->port; |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 4697 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4698 | |
Ville Syrjälä | e39b999 | 2014-09-04 14:53:14 +0300 | [diff] [blame] | 4699 | lockdep_assert_held(&dev_priv->pps_mutex); |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4700 | |
| 4701 | if (HAS_PCH_SPLIT(dev)) { |
| 4702 | pp_on_reg = PCH_PP_ON_DELAYS; |
| 4703 | pp_off_reg = PCH_PP_OFF_DELAYS; |
| 4704 | pp_div_reg = PCH_PP_DIVISOR; |
| 4705 | } else { |
Jani Nikula | bf13e81 | 2013-09-06 07:40:05 +0300 | [diff] [blame] | 4706 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
| 4707 | |
| 4708 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); |
| 4709 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); |
| 4710 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4711 | } |
| 4712 | |
Paulo Zanoni | b2f19d1 | 2013-12-19 14:29:44 -0200 | [diff] [blame] | 4713 | /* |
| 4714 | * And finally store the new values in the power sequencer. The |
| 4715 | * backlight delays are set to 1 because we do manual waits on them. For |
| 4716 | * T8, even BSpec recommends doing it. For T9, if we don't do this, |
| 4717 | * we'll end up waiting for the backlight off delay twice: once when we |
| 4718 | * do the manual sleep, and once when we disable the panel and wait for |
| 4719 | * the PP_STATUS bit to become zero. |
| 4720 | */ |
Jani Nikula | f30d26e | 2013-01-16 10:53:40 +0200 | [diff] [blame] | 4721 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
Paulo Zanoni | b2f19d1 | 2013-12-19 14:29:44 -0200 | [diff] [blame] | 4722 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
| 4723 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | |
Jani Nikula | f30d26e | 2013-01-16 10:53:40 +0200 | [diff] [blame] | 4724 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4725 | /* Compute the divisor for the pp clock, simply match the Bspec |
| 4726 | * formula. */ |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4727 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
Jani Nikula | f30d26e | 2013-01-16 10:53:40 +0200 | [diff] [blame] | 4728 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4729 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
| 4730 | |
| 4731 | /* Haswell doesn't have any port selection bits for the panel |
| 4732 | * power sequencer any more. */ |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 4733 | if (IS_VALLEYVIEW(dev)) { |
Ville Syrjälä | ad933b5 | 2014-08-18 22:15:56 +0300 | [diff] [blame] | 4734 | port_sel = PANEL_PORT_SELECT_VLV(port); |
Imre Deak | bc7d38a | 2013-05-16 14:40:36 +0300 | [diff] [blame] | 4735 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
Ville Syrjälä | ad933b5 | 2014-08-18 22:15:56 +0300 | [diff] [blame] | 4736 | if (port == PORT_A) |
Jani Nikula | a24c144 | 2013-09-05 16:44:46 +0300 | [diff] [blame] | 4737 | port_sel = PANEL_PORT_SELECT_DPA; |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4738 | else |
Jani Nikula | a24c144 | 2013-09-05 16:44:46 +0300 | [diff] [blame] | 4739 | port_sel = PANEL_PORT_SELECT_DPD; |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4740 | } |
| 4741 | |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4742 | pp_on |= port_sel; |
| 4743 | |
| 4744 | I915_WRITE(pp_on_reg, pp_on); |
| 4745 | I915_WRITE(pp_off_reg, pp_off); |
| 4746 | I915_WRITE(pp_div_reg, pp_div); |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4747 | |
Daniel Vetter | 67a5456 | 2012-10-20 20:57:45 +0200 | [diff] [blame] | 4748 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
Jesse Barnes | 453c542 | 2013-03-28 09:55:41 -0700 | [diff] [blame] | 4749 | I915_READ(pp_on_reg), |
| 4750 | I915_READ(pp_off_reg), |
| 4751 | I915_READ(pp_div_reg)); |
Keith Packard | c8110e5 | 2009-05-06 11:51:10 -0700 | [diff] [blame] | 4752 | } |
| 4753 | |
Vandana Kannan | b33a281 | 2015-02-13 15:33:03 +0530 | [diff] [blame^] | 4754 | /** |
| 4755 | * intel_dp_set_drrs_state - program registers for RR switch to take effect |
| 4756 | * @dev: DRM device |
| 4757 | * @refresh_rate: RR to be programmed |
| 4758 | * |
| 4759 | * This function gets called when refresh rate (RR) has to be changed from |
| 4760 | * one frequency to another. Switches can be between high and low RR |
| 4761 | * supported by the panel or to any other RR based on media playback (in |
| 4762 | * this case, RR value needs to be passed from user space). |
| 4763 | * |
| 4764 | * The caller of this function needs to take a lock on dev_priv->drrs. |
| 4765 | */ |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 4766 | static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4767 | { |
| 4768 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4769 | struct intel_encoder *encoder; |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 4770 | struct intel_digital_port *dig_port = NULL; |
| 4771 | struct intel_dp *intel_dp = dev_priv->drrs.dp; |
Ander Conselvan de Oliveira | 5cec258 | 2015-01-15 14:55:21 +0200 | [diff] [blame] | 4772 | struct intel_crtc_state *config = NULL; |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4773 | struct intel_crtc *intel_crtc = NULL; |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4774 | u32 reg, val; |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 4775 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4776 | |
| 4777 | if (refresh_rate <= 0) { |
| 4778 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); |
| 4779 | return; |
| 4780 | } |
| 4781 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 4782 | if (intel_dp == NULL) { |
| 4783 | DRM_DEBUG_KMS("DRRS not supported.\n"); |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4784 | return; |
| 4785 | } |
| 4786 | |
Daniel Vetter | 1fcc9d1 | 2014-07-11 10:30:10 -0700 | [diff] [blame] | 4787 | /* |
Rodrigo Vivi | e4d59f6 | 2014-11-20 02:22:08 -0800 | [diff] [blame] | 4788 | * FIXME: This needs proper synchronization with psr state for some |
| 4789 | * platforms that cannot have PSR and DRRS enabled at the same time. |
Daniel Vetter | 1fcc9d1 | 2014-07-11 10:30:10 -0700 | [diff] [blame] | 4790 | */ |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4791 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 4792 | dig_port = dp_to_dig_port(intel_dp); |
| 4793 | encoder = &dig_port->base; |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4794 | intel_crtc = encoder->new_crtc; |
| 4795 | |
| 4796 | if (!intel_crtc) { |
| 4797 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); |
| 4798 | return; |
| 4799 | } |
| 4800 | |
Ander Conselvan de Oliveira | 6e3c971 | 2015-01-15 14:55:25 +0200 | [diff] [blame] | 4801 | config = intel_crtc->config; |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4802 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 4803 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4804 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
| 4805 | return; |
| 4806 | } |
| 4807 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 4808 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
| 4809 | refresh_rate) |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4810 | index = DRRS_LOW_RR; |
| 4811 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 4812 | if (index == dev_priv->drrs.refresh_rate_type) { |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4813 | DRM_DEBUG_KMS( |
| 4814 | "DRRS requested for previously set RR...ignoring\n"); |
| 4815 | return; |
| 4816 | } |
| 4817 | |
| 4818 | if (!intel_crtc->active) { |
| 4819 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); |
| 4820 | return; |
| 4821 | } |
| 4822 | |
Durgadoss R | 44395bf | 2015-02-13 15:33:02 +0530 | [diff] [blame] | 4823 | if (INTEL_INFO(dev)->gen >= 8 && !IS_CHERRYVIEW(dev)) { |
Vandana Kannan | a4c30b1 | 2015-02-13 15:33:00 +0530 | [diff] [blame] | 4824 | switch (index) { |
| 4825 | case DRRS_HIGH_RR: |
| 4826 | intel_dp_set_m_n(intel_crtc, M1_N1); |
| 4827 | break; |
| 4828 | case DRRS_LOW_RR: |
| 4829 | intel_dp_set_m_n(intel_crtc, M2_N2); |
| 4830 | break; |
| 4831 | case DRRS_MAX_RR: |
| 4832 | default: |
| 4833 | DRM_ERROR("Unsupported refreshrate type\n"); |
| 4834 | } |
| 4835 | } else if (INTEL_INFO(dev)->gen > 6) { |
Ander Conselvan de Oliveira | 6e3c971 | 2015-01-15 14:55:25 +0200 | [diff] [blame] | 4836 | reg = PIPECONF(intel_crtc->config->cpu_transcoder); |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4837 | val = I915_READ(reg); |
Vandana Kannan | a4c30b1 | 2015-02-13 15:33:00 +0530 | [diff] [blame] | 4838 | |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4839 | if (index > DRRS_HIGH_RR) { |
Vandana Kannan | 6fa7aec | 2015-02-13 15:33:01 +0530 | [diff] [blame] | 4840 | if (IS_VALLEYVIEW(dev)) |
| 4841 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; |
| 4842 | else |
| 4843 | val |= PIPECONF_EDP_RR_MODE_SWITCH; |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4844 | } else { |
Vandana Kannan | 6fa7aec | 2015-02-13 15:33:01 +0530 | [diff] [blame] | 4845 | if (IS_VALLEYVIEW(dev)) |
| 4846 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; |
| 4847 | else |
| 4848 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4849 | } |
| 4850 | I915_WRITE(reg, val); |
| 4851 | } |
| 4852 | |
Vandana Kannan | 4e9ac94 | 2015-01-22 15:14:45 +0530 | [diff] [blame] | 4853 | dev_priv->drrs.refresh_rate_type = index; |
| 4854 | |
| 4855 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); |
| 4856 | } |
| 4857 | |
Vandana Kannan | b33a281 | 2015-02-13 15:33:03 +0530 | [diff] [blame^] | 4858 | /** |
| 4859 | * intel_edp_drrs_enable - init drrs struct if supported |
| 4860 | * @intel_dp: DP struct |
| 4861 | * |
| 4862 | * Initializes frontbuffer_bits and drrs.dp |
| 4863 | */ |
Vandana Kannan | c395578 | 2015-01-22 15:17:40 +0530 | [diff] [blame] | 4864 | void intel_edp_drrs_enable(struct intel_dp *intel_dp) |
| 4865 | { |
| 4866 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 4867 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4868 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
| 4869 | struct drm_crtc *crtc = dig_port->base.base.crtc; |
| 4870 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 4871 | |
| 4872 | if (!intel_crtc->config->has_drrs) { |
| 4873 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); |
| 4874 | return; |
| 4875 | } |
| 4876 | |
| 4877 | mutex_lock(&dev_priv->drrs.mutex); |
| 4878 | if (WARN_ON(dev_priv->drrs.dp)) { |
| 4879 | DRM_ERROR("DRRS already enabled\n"); |
| 4880 | goto unlock; |
| 4881 | } |
| 4882 | |
| 4883 | dev_priv->drrs.busy_frontbuffer_bits = 0; |
| 4884 | |
| 4885 | dev_priv->drrs.dp = intel_dp; |
| 4886 | |
| 4887 | unlock: |
| 4888 | mutex_unlock(&dev_priv->drrs.mutex); |
| 4889 | } |
| 4890 | |
Vandana Kannan | b33a281 | 2015-02-13 15:33:03 +0530 | [diff] [blame^] | 4891 | /** |
| 4892 | * intel_edp_drrs_disable - Disable DRRS |
| 4893 | * @intel_dp: DP struct |
| 4894 | * |
| 4895 | */ |
Vandana Kannan | c395578 | 2015-01-22 15:17:40 +0530 | [diff] [blame] | 4896 | void intel_edp_drrs_disable(struct intel_dp *intel_dp) |
| 4897 | { |
| 4898 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
| 4899 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4900 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
| 4901 | struct drm_crtc *crtc = dig_port->base.base.crtc; |
| 4902 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 4903 | |
| 4904 | if (!intel_crtc->config->has_drrs) |
| 4905 | return; |
| 4906 | |
| 4907 | mutex_lock(&dev_priv->drrs.mutex); |
| 4908 | if (!dev_priv->drrs.dp) { |
| 4909 | mutex_unlock(&dev_priv->drrs.mutex); |
| 4910 | return; |
| 4911 | } |
| 4912 | |
| 4913 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
| 4914 | intel_dp_set_drrs_state(dev_priv->dev, |
| 4915 | intel_dp->attached_connector->panel. |
| 4916 | fixed_mode->vrefresh); |
| 4917 | |
| 4918 | dev_priv->drrs.dp = NULL; |
| 4919 | mutex_unlock(&dev_priv->drrs.mutex); |
| 4920 | |
| 4921 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
| 4922 | } |
| 4923 | |
Vandana Kannan | 4e9ac94 | 2015-01-22 15:14:45 +0530 | [diff] [blame] | 4924 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
| 4925 | { |
| 4926 | struct drm_i915_private *dev_priv = |
| 4927 | container_of(work, typeof(*dev_priv), drrs.work.work); |
| 4928 | struct intel_dp *intel_dp; |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4929 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 4930 | mutex_lock(&dev_priv->drrs.mutex); |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4931 | |
Vandana Kannan | 4e9ac94 | 2015-01-22 15:14:45 +0530 | [diff] [blame] | 4932 | intel_dp = dev_priv->drrs.dp; |
| 4933 | |
| 4934 | if (!intel_dp) |
| 4935 | goto unlock; |
| 4936 | |
| 4937 | /* |
| 4938 | * The delayed work can race with an invalidate hence we need to |
| 4939 | * recheck. |
| 4940 | */ |
| 4941 | |
| 4942 | if (dev_priv->drrs.busy_frontbuffer_bits) |
| 4943 | goto unlock; |
| 4944 | |
| 4945 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) |
| 4946 | intel_dp_set_drrs_state(dev_priv->dev, |
| 4947 | intel_dp->attached_connector->panel. |
| 4948 | downclock_mode->vrefresh); |
| 4949 | |
| 4950 | unlock: |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4951 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 4952 | mutex_unlock(&dev_priv->drrs.mutex); |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 4953 | } |
| 4954 | |
Vandana Kannan | b33a281 | 2015-02-13 15:33:03 +0530 | [diff] [blame^] | 4955 | /** |
| 4956 | * intel_edp_drrs_invalidate - Invalidate DRRS |
| 4957 | * @dev: DRM device |
| 4958 | * @frontbuffer_bits: frontbuffer plane tracking bits |
| 4959 | * |
| 4960 | * When there is a disturbance on screen (due to cursor movement/time |
| 4961 | * update etc), DRRS needs to be invalidated, i.e. need to switch to |
| 4962 | * high RR. |
| 4963 | * |
| 4964 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. |
| 4965 | */ |
Vandana Kannan | a93fad0 | 2015-01-10 02:25:59 +0530 | [diff] [blame] | 4966 | void intel_edp_drrs_invalidate(struct drm_device *dev, |
| 4967 | unsigned frontbuffer_bits) |
| 4968 | { |
| 4969 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4970 | struct drm_crtc *crtc; |
| 4971 | enum pipe pipe; |
| 4972 | |
| 4973 | if (!dev_priv->drrs.dp) |
| 4974 | return; |
| 4975 | |
| 4976 | mutex_lock(&dev_priv->drrs.mutex); |
| 4977 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
| 4978 | pipe = to_intel_crtc(crtc)->pipe; |
| 4979 | |
| 4980 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) { |
| 4981 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
| 4982 | intel_dp_set_drrs_state(dev_priv->dev, |
| 4983 | dev_priv->drrs.dp->attached_connector->panel. |
| 4984 | fixed_mode->vrefresh); |
| 4985 | } |
| 4986 | |
| 4987 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); |
| 4988 | |
| 4989 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; |
| 4990 | mutex_unlock(&dev_priv->drrs.mutex); |
| 4991 | } |
| 4992 | |
Vandana Kannan | b33a281 | 2015-02-13 15:33:03 +0530 | [diff] [blame^] | 4993 | /** |
| 4994 | * intel_edp_drrs_flush - Flush DRRS |
| 4995 | * @dev: DRM device |
| 4996 | * @frontbuffer_bits: frontbuffer plane tracking bits |
| 4997 | * |
| 4998 | * When there is no movement on screen, DRRS work can be scheduled. |
| 4999 | * This DRRS work is responsible for setting relevant registers after a |
| 5000 | * timeout of 1 second. |
| 5001 | * |
| 5002 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. |
| 5003 | */ |
Vandana Kannan | a93fad0 | 2015-01-10 02:25:59 +0530 | [diff] [blame] | 5004 | void intel_edp_drrs_flush(struct drm_device *dev, |
| 5005 | unsigned frontbuffer_bits) |
| 5006 | { |
| 5007 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5008 | struct drm_crtc *crtc; |
| 5009 | enum pipe pipe; |
| 5010 | |
| 5011 | if (!dev_priv->drrs.dp) |
| 5012 | return; |
| 5013 | |
| 5014 | mutex_lock(&dev_priv->drrs.mutex); |
| 5015 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
| 5016 | pipe = to_intel_crtc(crtc)->pipe; |
| 5017 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; |
| 5018 | |
| 5019 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
| 5020 | |
| 5021 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR && |
| 5022 | !dev_priv->drrs.busy_frontbuffer_bits) |
| 5023 | schedule_delayed_work(&dev_priv->drrs.work, |
| 5024 | msecs_to_jiffies(1000)); |
| 5025 | mutex_unlock(&dev_priv->drrs.mutex); |
| 5026 | } |
| 5027 | |
Vandana Kannan | b33a281 | 2015-02-13 15:33:03 +0530 | [diff] [blame^] | 5028 | /** |
| 5029 | * DOC: Display Refresh Rate Switching (DRRS) |
| 5030 | * |
| 5031 | * Display Refresh Rate Switching (DRRS) is a power conservation feature |
| 5032 | * which enables swtching between low and high refresh rates, |
| 5033 | * dynamically, based on the usage scenario. This feature is applicable |
| 5034 | * for internal panels. |
| 5035 | * |
| 5036 | * Indication that the panel supports DRRS is given by the panel EDID, which |
| 5037 | * would list multiple refresh rates for one resolution. |
| 5038 | * |
| 5039 | * DRRS is of 2 types - static and seamless. |
| 5040 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset |
| 5041 | * (may appear as a blink on screen) and is used in dock-undock scenario. |
| 5042 | * Seamless DRRS involves changing RR without any visual effect to the user |
| 5043 | * and can be used during normal system usage. This is done by programming |
| 5044 | * certain registers. |
| 5045 | * |
| 5046 | * Support for static/seamless DRRS may be indicated in the VBT based on |
| 5047 | * inputs from the panel spec. |
| 5048 | * |
| 5049 | * DRRS saves power by switching to low RR based on usage scenarios. |
| 5050 | * |
| 5051 | * eDP DRRS:- |
| 5052 | * The implementation is based on frontbuffer tracking implementation. |
| 5053 | * When there is a disturbance on the screen triggered by user activity or a |
| 5054 | * periodic system activity, DRRS is disabled (RR is changed to high RR). |
| 5055 | * When there is no movement on screen, after a timeout of 1 second, a switch |
| 5056 | * to low RR is made. |
| 5057 | * For integration with frontbuffer tracking code, |
| 5058 | * intel_edp_drrs_invalidate() and intel_edp_drrs_flush() are called. |
| 5059 | * |
| 5060 | * DRRS can be further extended to support other internal panels and also |
| 5061 | * the scenario of video playback wherein RR is set based on the rate |
| 5062 | * requested by userspace. |
| 5063 | */ |
| 5064 | |
| 5065 | /** |
| 5066 | * intel_dp_drrs_init - Init basic DRRS work and mutex. |
| 5067 | * @intel_connector: eDP connector |
| 5068 | * @fixed_mode: preferred mode of panel |
| 5069 | * |
| 5070 | * This function is called only once at driver load to initialize basic |
| 5071 | * DRRS stuff. |
| 5072 | * |
| 5073 | * Returns: |
| 5074 | * Downclock mode if panel supports it, else return NULL. |
| 5075 | * DRRS support is determined by the presence of downclock mode (apart |
| 5076 | * from VBT setting). |
| 5077 | */ |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5078 | static struct drm_display_mode * |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 5079 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
| 5080 | struct drm_display_mode *fixed_mode) |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5081 | { |
| 5082 | struct drm_connector *connector = &intel_connector->base; |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 5083 | struct drm_device *dev = connector->dev; |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5084 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5085 | struct drm_display_mode *downclock_mode = NULL; |
| 5086 | |
| 5087 | if (INTEL_INFO(dev)->gen <= 6) { |
| 5088 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); |
| 5089 | return NULL; |
| 5090 | } |
| 5091 | |
| 5092 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { |
Damien Lespiau | 4079b8d | 2014-08-05 10:39:42 +0100 | [diff] [blame] | 5093 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5094 | return NULL; |
| 5095 | } |
| 5096 | |
| 5097 | downclock_mode = intel_find_panel_downclock |
| 5098 | (dev, fixed_mode, connector); |
| 5099 | |
| 5100 | if (!downclock_mode) { |
Damien Lespiau | 4079b8d | 2014-08-05 10:39:42 +0100 | [diff] [blame] | 5101 | DRM_DEBUG_KMS("DRRS not supported\n"); |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5102 | return NULL; |
| 5103 | } |
| 5104 | |
Vandana Kannan | 4e9ac94 | 2015-01-22 15:14:45 +0530 | [diff] [blame] | 5105 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
| 5106 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 5107 | mutex_init(&dev_priv->drrs.mutex); |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 5108 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 5109 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
Pradeep Bhat | 439d7ac | 2014-04-05 12:13:28 +0530 | [diff] [blame] | 5110 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 5111 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
Damien Lespiau | 4079b8d | 2014-08-05 10:39:42 +0100 | [diff] [blame] | 5112 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5113 | return downclock_mode; |
| 5114 | } |
| 5115 | |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5116 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 5117 | struct intel_connector *intel_connector) |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5118 | { |
| 5119 | struct drm_connector *connector = &intel_connector->base; |
| 5120 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
Paulo Zanoni | 6363521 | 2014-04-22 19:55:42 -0300 | [diff] [blame] | 5121 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
| 5122 | struct drm_device *dev = intel_encoder->base.dev; |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5123 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5124 | struct drm_display_mode *fixed_mode = NULL; |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5125 | struct drm_display_mode *downclock_mode = NULL; |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5126 | bool has_dpcd; |
| 5127 | struct drm_display_mode *scan; |
| 5128 | struct edid *edid; |
Ville Syrjälä | 6517d27 | 2014-11-07 11:16:02 +0200 | [diff] [blame] | 5129 | enum pipe pipe = INVALID_PIPE; |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5130 | |
Vandana Kannan | 96178ee | 2015-01-10 02:25:56 +0530 | [diff] [blame] | 5131 | dev_priv->drrs.type = DRRS_NOT_SUPPORTED; |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5132 | |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5133 | if (!is_edp(intel_dp)) |
| 5134 | return true; |
| 5135 | |
Ville Syrjälä | 49e6bc5 | 2014-10-28 16:15:52 +0200 | [diff] [blame] | 5136 | pps_lock(intel_dp); |
| 5137 | intel_edp_panel_vdd_sanitize(intel_dp); |
| 5138 | pps_unlock(intel_dp); |
Paulo Zanoni | 6363521 | 2014-04-22 19:55:42 -0300 | [diff] [blame] | 5139 | |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5140 | /* Cache DPCD and EDID for edp. */ |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5141 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5142 | |
| 5143 | if (has_dpcd) { |
| 5144 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) |
| 5145 | dev_priv->no_aux_handshake = |
| 5146 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & |
| 5147 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; |
| 5148 | } else { |
| 5149 | /* if this fails, presume the device is a ghost */ |
| 5150 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5151 | return false; |
| 5152 | } |
| 5153 | |
| 5154 | /* We now know it's not a ghost, init power sequence regs. */ |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 5155 | pps_lock(intel_dp); |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 5156 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 5157 | pps_unlock(intel_dp); |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5158 | |
Daniel Vetter | 060c877 | 2014-03-21 23:22:35 +0100 | [diff] [blame] | 5159 | mutex_lock(&dev->mode_config.mutex); |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 5160 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5161 | if (edid) { |
| 5162 | if (drm_add_edid_modes(connector, edid)) { |
| 5163 | drm_mode_connector_update_edid_property(connector, |
| 5164 | edid); |
| 5165 | drm_edid_to_eld(connector, edid); |
| 5166 | } else { |
| 5167 | kfree(edid); |
| 5168 | edid = ERR_PTR(-EINVAL); |
| 5169 | } |
| 5170 | } else { |
| 5171 | edid = ERR_PTR(-ENOENT); |
| 5172 | } |
| 5173 | intel_connector->edid = edid; |
| 5174 | |
| 5175 | /* prefer fixed mode from EDID if available */ |
| 5176 | list_for_each_entry(scan, &connector->probed_modes, head) { |
| 5177 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { |
| 5178 | fixed_mode = drm_mode_duplicate(dev, scan); |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5179 | downclock_mode = intel_dp_drrs_init( |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5180 | intel_connector, fixed_mode); |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5181 | break; |
| 5182 | } |
| 5183 | } |
| 5184 | |
| 5185 | /* fallback to VBT if available for eDP */ |
| 5186 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { |
| 5187 | fixed_mode = drm_mode_duplicate(dev, |
| 5188 | dev_priv->vbt.lfp_lvds_vbt_mode); |
| 5189 | if (fixed_mode) |
| 5190 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; |
| 5191 | } |
Daniel Vetter | 060c877 | 2014-03-21 23:22:35 +0100 | [diff] [blame] | 5192 | mutex_unlock(&dev->mode_config.mutex); |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5193 | |
Clint Taylor | 01527b3 | 2014-07-07 13:01:46 -0700 | [diff] [blame] | 5194 | if (IS_VALLEYVIEW(dev)) { |
| 5195 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; |
| 5196 | register_reboot_notifier(&intel_dp->edp_notifier); |
Ville Syrjälä | 6517d27 | 2014-11-07 11:16:02 +0200 | [diff] [blame] | 5197 | |
| 5198 | /* |
| 5199 | * Figure out the current pipe for the initial backlight setup. |
| 5200 | * If the current pipe isn't valid, try the PPS pipe, and if that |
| 5201 | * fails just assume pipe A. |
| 5202 | */ |
| 5203 | if (IS_CHERRYVIEW(dev)) |
| 5204 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); |
| 5205 | else |
| 5206 | pipe = PORT_TO_PIPE(intel_dp->DP); |
| 5207 | |
| 5208 | if (pipe != PIPE_A && pipe != PIPE_B) |
| 5209 | pipe = intel_dp->pps_pipe; |
| 5210 | |
| 5211 | if (pipe != PIPE_A && pipe != PIPE_B) |
| 5212 | pipe = PIPE_A; |
| 5213 | |
| 5214 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", |
| 5215 | pipe_name(pipe)); |
Clint Taylor | 01527b3 | 2014-07-07 13:01:46 -0700 | [diff] [blame] | 5216 | } |
| 5217 | |
Pradeep Bhat | 4f9db5b | 2014-04-05 12:12:31 +0530 | [diff] [blame] | 5218 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
Jani Nikula | 73580fb7 | 2014-08-12 17:11:41 +0300 | [diff] [blame] | 5219 | intel_connector->panel.backlight_power = intel_edp_backlight_power; |
Ville Syrjälä | 6517d27 | 2014-11-07 11:16:02 +0200 | [diff] [blame] | 5220 | intel_panel_setup_backlight(connector, pipe); |
Paulo Zanoni | ed92f0b | 2013-06-12 17:27:24 -0300 | [diff] [blame] | 5221 | |
| 5222 | return true; |
| 5223 | } |
| 5224 | |
Paulo Zanoni | 16c2553 | 2013-06-12 17:27:25 -0300 | [diff] [blame] | 5225 | bool |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5226 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
| 5227 | struct intel_connector *intel_connector) |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 5228 | { |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5229 | struct drm_connector *connector = &intel_connector->base; |
| 5230 | struct intel_dp *intel_dp = &intel_dig_port->dp; |
| 5231 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
| 5232 | struct drm_device *dev = intel_encoder->base.dev; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 5233 | struct drm_i915_private *dev_priv = dev->dev_private; |
Paulo Zanoni | 174edf1 | 2012-10-26 19:05:50 -0200 | [diff] [blame] | 5234 | enum port port = intel_dig_port->port; |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 5235 | int type; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 5236 | |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 5237 | intel_dp->pps_pipe = INVALID_PIPE; |
| 5238 | |
Damien Lespiau | ec5b01d | 2014-01-21 13:35:39 +0000 | [diff] [blame] | 5239 | /* intel_dp vfuncs */ |
Damien Lespiau | b6b5e38 | 2014-01-20 16:00:59 +0000 | [diff] [blame] | 5240 | if (INTEL_INFO(dev)->gen >= 9) |
| 5241 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; |
| 5242 | else if (IS_VALLEYVIEW(dev)) |
Damien Lespiau | ec5b01d | 2014-01-21 13:35:39 +0000 | [diff] [blame] | 5243 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; |
| 5244 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
| 5245 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; |
| 5246 | else if (HAS_PCH_SPLIT(dev)) |
| 5247 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; |
| 5248 | else |
| 5249 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; |
| 5250 | |
Damien Lespiau | b9ca5fa | 2014-01-20 16:01:00 +0000 | [diff] [blame] | 5251 | if (INTEL_INFO(dev)->gen >= 9) |
| 5252 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; |
| 5253 | else |
| 5254 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; |
Damien Lespiau | 153b110 | 2014-01-21 13:37:15 +0000 | [diff] [blame] | 5255 | |
Daniel Vetter | 0767935 | 2012-09-06 22:15:42 +0200 | [diff] [blame] | 5256 | /* Preserve the current hw state. */ |
| 5257 | intel_dp->DP = I915_READ(intel_dp->output_reg); |
Jani Nikula | dd06f90 | 2012-10-19 14:51:50 +0300 | [diff] [blame] | 5258 | intel_dp->attached_connector = intel_connector; |
Chris Wilson | 3d3dc14 | 2011-02-12 10:33:12 +0000 | [diff] [blame] | 5259 | |
Ville Syrjälä | 3b32a35 | 2013-11-01 18:22:41 +0200 | [diff] [blame] | 5260 | if (intel_dp_is_edp(dev, port)) |
Gajanan Bhat | 19c0392 | 2012-09-27 19:13:07 +0530 | [diff] [blame] | 5261 | type = DRM_MODE_CONNECTOR_eDP; |
Ville Syrjälä | 3b32a35 | 2013-11-01 18:22:41 +0200 | [diff] [blame] | 5262 | else |
| 5263 | type = DRM_MODE_CONNECTOR_DisplayPort; |
Adam Jackson | b329530 | 2010-07-16 14:46:28 -0400 | [diff] [blame] | 5264 | |
Imre Deak | f7d2490 | 2013-05-08 13:14:05 +0300 | [diff] [blame] | 5265 | /* |
| 5266 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but |
| 5267 | * for DP the encoder type can be set by the caller to |
| 5268 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. |
| 5269 | */ |
| 5270 | if (type == DRM_MODE_CONNECTOR_eDP) |
| 5271 | intel_encoder->type = INTEL_OUTPUT_EDP; |
| 5272 | |
Ville Syrjälä | c17ed5b | 2014-10-16 21:27:27 +0300 | [diff] [blame] | 5273 | /* eDP only on port B and/or C on vlv/chv */ |
| 5274 | if (WARN_ON(IS_VALLEYVIEW(dev) && is_edp(intel_dp) && |
| 5275 | port != PORT_B && port != PORT_C)) |
| 5276 | return false; |
| 5277 | |
Imre Deak | e7281ea | 2013-05-08 13:14:08 +0300 | [diff] [blame] | 5278 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
| 5279 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", |
| 5280 | port_name(port)); |
| 5281 | |
Adam Jackson | b329530 | 2010-07-16 14:46:28 -0400 | [diff] [blame] | 5282 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 5283 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
| 5284 | |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5285 | connector->interlace_allowed = true; |
| 5286 | connector->doublescan_allowed = 0; |
Ma Ling | f8aed70 | 2009-08-24 13:50:24 +0800 | [diff] [blame] | 5287 | |
Daniel Vetter | 66a9278 | 2012-07-12 20:08:18 +0200 | [diff] [blame] | 5288 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 5289 | edp_panel_vdd_work); |
Zhenyu Wang | 6251ec0 | 2010-01-12 05:38:32 +0800 | [diff] [blame] | 5290 | |
Chris Wilson | df0e924 | 2010-09-09 16:20:55 +0100 | [diff] [blame] | 5291 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
Thomas Wood | 34ea3d3 | 2014-05-29 16:57:41 +0100 | [diff] [blame] | 5292 | drm_connector_register(connector); |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 5293 | |
Paulo Zanoni | affa935 | 2012-11-23 15:30:39 -0200 | [diff] [blame] | 5294 | if (HAS_DDI(dev)) |
Paulo Zanoni | bcbc889 | 2012-10-26 19:05:51 -0200 | [diff] [blame] | 5295 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
| 5296 | else |
| 5297 | intel_connector->get_hw_state = intel_connector_get_hw_state; |
Imre Deak | 80f65de | 2014-02-11 17:12:49 +0200 | [diff] [blame] | 5298 | intel_connector->unregister = intel_dp_connector_unregister; |
Paulo Zanoni | bcbc889 | 2012-10-26 19:05:51 -0200 | [diff] [blame] | 5299 | |
Jani Nikula | 0b99836 | 2014-03-14 16:51:17 +0200 | [diff] [blame] | 5300 | /* Set up the hotplug pin. */ |
Paulo Zanoni | ab9d7c3 | 2012-07-17 17:53:45 -0300 | [diff] [blame] | 5301 | switch (port) { |
| 5302 | case PORT_A: |
Egbert Eich | 1d843f9 | 2013-02-25 12:06:49 -0500 | [diff] [blame] | 5303 | intel_encoder->hpd_pin = HPD_PORT_A; |
Paulo Zanoni | ab9d7c3 | 2012-07-17 17:53:45 -0300 | [diff] [blame] | 5304 | break; |
| 5305 | case PORT_B: |
Egbert Eich | 1d843f9 | 2013-02-25 12:06:49 -0500 | [diff] [blame] | 5306 | intel_encoder->hpd_pin = HPD_PORT_B; |
Paulo Zanoni | ab9d7c3 | 2012-07-17 17:53:45 -0300 | [diff] [blame] | 5307 | break; |
| 5308 | case PORT_C: |
Egbert Eich | 1d843f9 | 2013-02-25 12:06:49 -0500 | [diff] [blame] | 5309 | intel_encoder->hpd_pin = HPD_PORT_C; |
Paulo Zanoni | ab9d7c3 | 2012-07-17 17:53:45 -0300 | [diff] [blame] | 5310 | break; |
| 5311 | case PORT_D: |
Egbert Eich | 1d843f9 | 2013-02-25 12:06:49 -0500 | [diff] [blame] | 5312 | intel_encoder->hpd_pin = HPD_PORT_D; |
Paulo Zanoni | ab9d7c3 | 2012-07-17 17:53:45 -0300 | [diff] [blame] | 5313 | break; |
| 5314 | default: |
Damien Lespiau | ad1c0b1 | 2013-03-07 15:30:28 +0000 | [diff] [blame] | 5315 | BUG(); |
Zhenyu Wang | 5eb08b6 | 2009-07-24 01:00:31 +0800 | [diff] [blame] | 5316 | } |
| 5317 | |
Imre Deak | dada1a9 | 2014-01-29 13:25:41 +0200 | [diff] [blame] | 5318 | if (is_edp(intel_dp)) { |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 5319 | pps_lock(intel_dp); |
Ville Syrjälä | 1e74a32 | 2014-10-28 16:15:51 +0200 | [diff] [blame] | 5320 | intel_dp_init_panel_power_timestamps(intel_dp); |
| 5321 | if (IS_VALLEYVIEW(dev)) |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 5322 | vlv_initial_power_sequencer_setup(intel_dp); |
Ville Syrjälä | 1e74a32 | 2014-10-28 16:15:51 +0200 | [diff] [blame] | 5323 | else |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 5324 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 5325 | pps_unlock(intel_dp); |
Imre Deak | dada1a9 | 2014-01-29 13:25:41 +0200 | [diff] [blame] | 5326 | } |
Paulo Zanoni | 0095e6d | 2013-12-19 14:29:39 -0200 | [diff] [blame] | 5327 | |
Jani Nikula | 9d1a103 | 2014-03-14 16:51:15 +0200 | [diff] [blame] | 5328 | intel_dp_aux_init(intel_dp, intel_connector); |
Dave Airlie | c1f0526 | 2012-08-30 11:06:18 +1000 | [diff] [blame] | 5329 | |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 5330 | /* init MST on ports that can support it */ |
Damien Lespiau | c86ea3d | 2014-12-12 14:26:58 +0000 | [diff] [blame] | 5331 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) { |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 5332 | if (port == PORT_B || port == PORT_C || port == PORT_D) { |
Ville Syrjälä | a4a5d2f | 2014-09-04 14:54:20 +0300 | [diff] [blame] | 5333 | intel_dp_mst_encoder_init(intel_dig_port, |
| 5334 | intel_connector->base.base.id); |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 5335 | } |
| 5336 | } |
| 5337 | |
Ville Syrjälä | 36b5f42 | 2014-10-16 21:27:30 +0300 | [diff] [blame] | 5338 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
Dave Airlie | 4f71d0c | 2014-06-04 16:02:28 +1000 | [diff] [blame] | 5339 | drm_dp_aux_unregister(&intel_dp->aux); |
Paulo Zanoni | 15b1d17 | 2013-06-12 17:27:27 -0300 | [diff] [blame] | 5340 | if (is_edp(intel_dp)) { |
| 5341 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
Ville Syrjälä | 951468f | 2014-09-04 14:55:31 +0300 | [diff] [blame] | 5342 | /* |
| 5343 | * vdd might still be enabled do to the delayed vdd off. |
| 5344 | * Make sure vdd is actually turned off here. |
| 5345 | */ |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 5346 | pps_lock(intel_dp); |
Daniel Vetter | 4be7378 | 2014-01-17 14:39:48 +0100 | [diff] [blame] | 5347 | edp_panel_vdd_off_sync(intel_dp); |
Ville Syrjälä | 773538e8 | 2014-09-04 14:54:56 +0300 | [diff] [blame] | 5348 | pps_unlock(intel_dp); |
Paulo Zanoni | 15b1d17 | 2013-06-12 17:27:27 -0300 | [diff] [blame] | 5349 | } |
Thomas Wood | 34ea3d3 | 2014-05-29 16:57:41 +0100 | [diff] [blame] | 5350 | drm_connector_unregister(connector); |
Paulo Zanoni | b2f246a | 2013-06-12 17:27:26 -0300 | [diff] [blame] | 5351 | drm_connector_cleanup(connector); |
Paulo Zanoni | 16c2553 | 2013-06-12 17:27:25 -0300 | [diff] [blame] | 5352 | return false; |
Paulo Zanoni | b2f246a | 2013-06-12 17:27:26 -0300 | [diff] [blame] | 5353 | } |
Zhenyu Wang | 32f9d65 | 2009-07-24 01:00:32 +0800 | [diff] [blame] | 5354 | |
Chris Wilson | f684960 | 2010-09-19 09:29:33 +0100 | [diff] [blame] | 5355 | intel_dp_add_properties(intel_dp, connector); |
| 5356 | |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 5357 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
| 5358 | * 0xd. Failure to do so will result in spurious interrupts being |
| 5359 | * generated on the port when a cable is not attached. |
| 5360 | */ |
| 5361 | if (IS_G4X(dev) && !IS_GM45(dev)) { |
| 5362 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); |
| 5363 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); |
| 5364 | } |
Paulo Zanoni | 16c2553 | 2013-06-12 17:27:25 -0300 | [diff] [blame] | 5365 | |
| 5366 | return true; |
Keith Packard | a4fc5ed | 2009-04-07 16:16:42 -0700 | [diff] [blame] | 5367 | } |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5368 | |
| 5369 | void |
| 5370 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) |
| 5371 | { |
Dave Airlie | 13cf550 | 2014-06-18 11:29:35 +1000 | [diff] [blame] | 5372 | struct drm_i915_private *dev_priv = dev->dev_private; |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5373 | struct intel_digital_port *intel_dig_port; |
| 5374 | struct intel_encoder *intel_encoder; |
| 5375 | struct drm_encoder *encoder; |
| 5376 | struct intel_connector *intel_connector; |
| 5377 | |
Daniel Vetter | b14c567 | 2013-09-19 12:18:32 +0200 | [diff] [blame] | 5378 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5379 | if (!intel_dig_port) |
| 5380 | return; |
| 5381 | |
Daniel Vetter | b14c567 | 2013-09-19 12:18:32 +0200 | [diff] [blame] | 5382 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5383 | if (!intel_connector) { |
| 5384 | kfree(intel_dig_port); |
| 5385 | return; |
| 5386 | } |
| 5387 | |
| 5388 | intel_encoder = &intel_dig_port->base; |
| 5389 | encoder = &intel_encoder->base; |
| 5390 | |
| 5391 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, |
| 5392 | DRM_MODE_ENCODER_TMDS); |
| 5393 | |
Daniel Vetter | 5bfe2ac | 2013-03-27 00:44:55 +0100 | [diff] [blame] | 5394 | intel_encoder->compute_config = intel_dp_compute_config; |
Paulo Zanoni | 00c09d7 | 2012-10-26 19:05:52 -0200 | [diff] [blame] | 5395 | intel_encoder->disable = intel_disable_dp; |
Paulo Zanoni | 00c09d7 | 2012-10-26 19:05:52 -0200 | [diff] [blame] | 5396 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
Jesse Barnes | 045ac3b | 2013-05-14 17:08:26 -0700 | [diff] [blame] | 5397 | intel_encoder->get_config = intel_dp_get_config; |
Imre Deak | 07f9cd0 | 2014-08-18 14:42:45 +0300 | [diff] [blame] | 5398 | intel_encoder->suspend = intel_dp_encoder_suspend; |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 5399 | if (IS_CHERRYVIEW(dev)) { |
Ville Syrjälä | 9197c88 | 2014-04-09 13:29:05 +0300 | [diff] [blame] | 5400 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 5401 | intel_encoder->pre_enable = chv_pre_enable_dp; |
| 5402 | intel_encoder->enable = vlv_enable_dp; |
Ville Syrjälä | 580d381 | 2014-04-09 13:29:00 +0300 | [diff] [blame] | 5403 | intel_encoder->post_disable = chv_post_disable_dp; |
Chon Ming Lee | e4a1d84 | 2014-04-09 13:28:20 +0300 | [diff] [blame] | 5404 | } else if (IS_VALLEYVIEW(dev)) { |
Jani Nikula | ecff4f3 | 2013-09-06 07:38:29 +0300 | [diff] [blame] | 5405 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 5406 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
| 5407 | intel_encoder->enable = vlv_enable_dp; |
Ville Syrjälä | 49277c3 | 2014-03-31 18:21:26 +0300 | [diff] [blame] | 5408 | intel_encoder->post_disable = vlv_post_disable_dp; |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 5409 | } else { |
Jani Nikula | ecff4f3 | 2013-09-06 07:38:29 +0300 | [diff] [blame] | 5410 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
| 5411 | intel_encoder->enable = g4x_enable_dp; |
Ville Syrjälä | 08aff3f | 2014-08-18 22:16:09 +0300 | [diff] [blame] | 5412 | if (INTEL_INFO(dev)->gen >= 5) |
| 5413 | intel_encoder->post_disable = ilk_post_disable_dp; |
Jani Nikula | ab1f90f | 2013-07-30 12:20:30 +0300 | [diff] [blame] | 5414 | } |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5415 | |
Paulo Zanoni | 174edf1 | 2012-10-26 19:05:50 -0200 | [diff] [blame] | 5416 | intel_dig_port->port = port; |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5417 | intel_dig_port->dp.output_reg = output_reg; |
| 5418 | |
Paulo Zanoni | 00c09d7 | 2012-10-26 19:05:52 -0200 | [diff] [blame] | 5419 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
Ville Syrjälä | 882ec38 | 2014-04-28 14:07:43 +0300 | [diff] [blame] | 5420 | if (IS_CHERRYVIEW(dev)) { |
| 5421 | if (port == PORT_D) |
| 5422 | intel_encoder->crtc_mask = 1 << 2; |
| 5423 | else |
| 5424 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); |
| 5425 | } else { |
| 5426 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); |
| 5427 | } |
Ville Syrjälä | bc079e8 | 2014-03-03 16:15:28 +0200 | [diff] [blame] | 5428 | intel_encoder->cloneable = 0; |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5429 | intel_encoder->hot_plug = intel_dp_hot_plug; |
| 5430 | |
Dave Airlie | 13cf550 | 2014-06-18 11:29:35 +1000 | [diff] [blame] | 5431 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
| 5432 | dev_priv->hpd_irq_port[port] = intel_dig_port; |
| 5433 | |
Paulo Zanoni | 15b1d17 | 2013-06-12 17:27:27 -0300 | [diff] [blame] | 5434 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
| 5435 | drm_encoder_cleanup(encoder); |
| 5436 | kfree(intel_dig_port); |
Paulo Zanoni | b2f246a | 2013-06-12 17:27:26 -0300 | [diff] [blame] | 5437 | kfree(intel_connector); |
Paulo Zanoni | 15b1d17 | 2013-06-12 17:27:27 -0300 | [diff] [blame] | 5438 | } |
Paulo Zanoni | f0fec3f | 2012-10-26 19:05:48 -0200 | [diff] [blame] | 5439 | } |
Dave Airlie | 0e32b39 | 2014-05-02 14:02:48 +1000 | [diff] [blame] | 5440 | |
| 5441 | void intel_dp_mst_suspend(struct drm_device *dev) |
| 5442 | { |
| 5443 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5444 | int i; |
| 5445 | |
| 5446 | /* disable MST */ |
| 5447 | for (i = 0; i < I915_MAX_PORTS; i++) { |
| 5448 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; |
| 5449 | if (!intel_dig_port) |
| 5450 | continue; |
| 5451 | |
| 5452 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { |
| 5453 | if (!intel_dig_port->dp.can_mst) |
| 5454 | continue; |
| 5455 | if (intel_dig_port->dp.is_mst) |
| 5456 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); |
| 5457 | } |
| 5458 | } |
| 5459 | } |
| 5460 | |
| 5461 | void intel_dp_mst_resume(struct drm_device *dev) |
| 5462 | { |
| 5463 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5464 | int i; |
| 5465 | |
| 5466 | for (i = 0; i < I915_MAX_PORTS; i++) { |
| 5467 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; |
| 5468 | if (!intel_dig_port) |
| 5469 | continue; |
| 5470 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { |
| 5471 | int ret; |
| 5472 | |
| 5473 | if (!intel_dig_port->dp.can_mst) |
| 5474 | continue; |
| 5475 | |
| 5476 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); |
| 5477 | if (ret != 0) { |
| 5478 | intel_dp_check_mst_status(&intel_dig_port->dp); |
| 5479 | } |
| 5480 | } |
| 5481 | } |
| 5482 | } |