Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2006-2007 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 |
| 21 | * DEALINGS IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Eric Anholt <eric@anholt.net> |
| 25 | */ |
| 26 | |
| 27 | #include <linux/i2c.h> |
| 28 | #include "drmP.h" |
| 29 | #include "drm.h" |
| 30 | #include "drm_crtc.h" |
| 31 | #include "drm_crtc_helper.h" |
| 32 | #include "intel_drv.h" |
| 33 | #include "i915_drm.h" |
| 34 | #include "i915_drv.h" |
| 35 | |
| 36 | static void intel_crt_dpms(struct drm_encoder *encoder, int mode) |
| 37 | { |
| 38 | struct drm_device *dev = encoder->dev; |
| 39 | struct drm_i915_private *dev_priv = dev->dev_private; |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 40 | u32 temp, reg; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 41 | |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 42 | if (IS_IRONLAKE(dev)) |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 43 | reg = PCH_ADPA; |
| 44 | else |
| 45 | reg = ADPA; |
| 46 | |
| 47 | temp = I915_READ(reg); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 48 | temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE); |
ling.ma@intel.com | febc769 | 2009-06-25 11:55:57 +0800 | [diff] [blame] | 49 | temp &= ~ADPA_DAC_ENABLE; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 50 | |
| 51 | switch(mode) { |
| 52 | case DRM_MODE_DPMS_ON: |
| 53 | temp |= ADPA_DAC_ENABLE; |
| 54 | break; |
| 55 | case DRM_MODE_DPMS_STANDBY: |
| 56 | temp |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE; |
| 57 | break; |
| 58 | case DRM_MODE_DPMS_SUSPEND: |
| 59 | temp |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE; |
| 60 | break; |
| 61 | case DRM_MODE_DPMS_OFF: |
| 62 | temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE; |
| 63 | break; |
| 64 | } |
| 65 | |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 66 | I915_WRITE(reg, temp); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | static int intel_crt_mode_valid(struct drm_connector *connector, |
| 70 | struct drm_display_mode *mode) |
| 71 | { |
Zhao Yakui | 6bcdcd9 | 2009-03-03 18:06:42 +0800 | [diff] [blame] | 72 | struct drm_device *dev = connector->dev; |
| 73 | |
| 74 | int max_clock = 0; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 75 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) |
| 76 | return MODE_NO_DBLESCAN; |
| 77 | |
Zhao Yakui | 6bcdcd9 | 2009-03-03 18:06:42 +0800 | [diff] [blame] | 78 | if (mode->clock < 25000) |
| 79 | return MODE_CLOCK_LOW; |
| 80 | |
| 81 | if (!IS_I9XX(dev)) |
| 82 | max_clock = 350000; |
| 83 | else |
| 84 | max_clock = 400000; |
| 85 | if (mode->clock > max_clock) |
| 86 | return MODE_CLOCK_HIGH; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 87 | |
| 88 | return MODE_OK; |
| 89 | } |
| 90 | |
| 91 | static bool intel_crt_mode_fixup(struct drm_encoder *encoder, |
| 92 | struct drm_display_mode *mode, |
| 93 | struct drm_display_mode *adjusted_mode) |
| 94 | { |
| 95 | return true; |
| 96 | } |
| 97 | |
| 98 | static void intel_crt_mode_set(struct drm_encoder *encoder, |
| 99 | struct drm_display_mode *mode, |
| 100 | struct drm_display_mode *adjusted_mode) |
| 101 | { |
| 102 | |
| 103 | struct drm_device *dev = encoder->dev; |
| 104 | struct drm_crtc *crtc = encoder->crtc; |
| 105 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 106 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 107 | int dpll_md_reg; |
| 108 | u32 adpa, dpll_md; |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 109 | u32 adpa_reg; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 110 | |
| 111 | if (intel_crtc->pipe == 0) |
| 112 | dpll_md_reg = DPLL_A_MD; |
| 113 | else |
| 114 | dpll_md_reg = DPLL_B_MD; |
| 115 | |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 116 | if (IS_IRONLAKE(dev)) |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 117 | adpa_reg = PCH_ADPA; |
| 118 | else |
| 119 | adpa_reg = ADPA; |
| 120 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 121 | /* |
| 122 | * Disable separate mode multiplier used when cloning SDVO to CRT |
| 123 | * XXX this needs to be adjusted when we really are cloning |
| 124 | */ |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 125 | if (IS_I965G(dev) && !IS_IRONLAKE(dev)) { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 126 | dpll_md = I915_READ(dpll_md_reg); |
| 127 | I915_WRITE(dpll_md_reg, |
| 128 | dpll_md & ~DPLL_MD_UDI_MULTIPLIER_MASK); |
| 129 | } |
| 130 | |
| 131 | adpa = 0; |
| 132 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
| 133 | adpa |= ADPA_HSYNC_ACTIVE_HIGH; |
| 134 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) |
| 135 | adpa |= ADPA_VSYNC_ACTIVE_HIGH; |
| 136 | |
Zhao Yakui | 6bcdcd9 | 2009-03-03 18:06:42 +0800 | [diff] [blame] | 137 | if (intel_crtc->pipe == 0) { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 138 | adpa |= ADPA_PIPE_A_SELECT; |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 139 | if (!IS_IRONLAKE(dev)) |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 140 | I915_WRITE(BCLRPAT_A, 0); |
Zhao Yakui | 6bcdcd9 | 2009-03-03 18:06:42 +0800 | [diff] [blame] | 141 | } else { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 142 | adpa |= ADPA_PIPE_B_SELECT; |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 143 | if (!IS_IRONLAKE(dev)) |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 144 | I915_WRITE(BCLRPAT_B, 0); |
Zhao Yakui | 6bcdcd9 | 2009-03-03 18:06:42 +0800 | [diff] [blame] | 145 | } |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 146 | |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 147 | I915_WRITE(adpa_reg, adpa); |
| 148 | } |
| 149 | |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 150 | static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector) |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 151 | { |
| 152 | struct drm_device *dev = connector->dev; |
| 153 | struct drm_i915_private *dev_priv = dev->dev_private; |
Zhenyu Wang | 730915d | 2009-09-19 14:54:08 +0800 | [diff] [blame] | 154 | u32 adpa; |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 155 | bool ret; |
| 156 | |
Zhenyu Wang | 730915d | 2009-09-19 14:54:08 +0800 | [diff] [blame] | 157 | adpa = I915_READ(PCH_ADPA); |
Zhenyu Wang | 67941da | 2009-07-24 01:00:33 +0800 | [diff] [blame] | 158 | |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 159 | adpa &= ~ADPA_CRT_HOTPLUG_MASK; |
| 160 | |
| 161 | adpa |= (ADPA_CRT_HOTPLUG_PERIOD_128 | |
| 162 | ADPA_CRT_HOTPLUG_WARMUP_10MS | |
| 163 | ADPA_CRT_HOTPLUG_SAMPLE_4S | |
| 164 | ADPA_CRT_HOTPLUG_VOLTAGE_50 | /* default */ |
| 165 | ADPA_CRT_HOTPLUG_VOLREF_325MV | |
| 166 | ADPA_CRT_HOTPLUG_ENABLE | |
| 167 | ADPA_CRT_HOTPLUG_FORCE_TRIGGER); |
| 168 | |
Zhao Yakui | 28c9773 | 2009-10-09 11:39:41 +0800 | [diff] [blame] | 169 | DRM_DEBUG_KMS("pch crt adpa 0x%x", adpa); |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 170 | I915_WRITE(PCH_ADPA, adpa); |
| 171 | |
Zhenyu Wang | 67941da | 2009-07-24 01:00:33 +0800 | [diff] [blame] | 172 | while ((I915_READ(PCH_ADPA) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER) != 0) |
| 173 | ; |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 174 | |
| 175 | /* Check the status to see if both blue and green are on now */ |
| 176 | adpa = I915_READ(PCH_ADPA); |
Zhenyu Wang | 67941da | 2009-07-24 01:00:33 +0800 | [diff] [blame] | 177 | adpa &= ADPA_CRT_HOTPLUG_MONITOR_MASK; |
| 178 | if ((adpa == ADPA_CRT_HOTPLUG_MONITOR_COLOR) || |
| 179 | (adpa == ADPA_CRT_HOTPLUG_MONITOR_MONO)) |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 180 | ret = true; |
| 181 | else |
| 182 | ret = false; |
| 183 | |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 184 | return ret; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence. |
| 189 | * |
| 190 | * Not for i915G/i915GM |
| 191 | * |
| 192 | * \return true if CRT is connected. |
| 193 | * \return false if CRT is disconnected. |
| 194 | */ |
| 195 | static bool intel_crt_detect_hotplug(struct drm_connector *connector) |
| 196 | { |
| 197 | struct drm_device *dev = connector->dev; |
| 198 | struct drm_i915_private *dev_priv = dev->dev_private; |
Zhao Yakui | 771cb08 | 2009-03-03 18:07:52 +0800 | [diff] [blame] | 199 | u32 hotplug_en; |
| 200 | int i, tries = 0; |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 201 | |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 202 | if (IS_IRONLAKE(dev)) |
| 203 | return intel_ironlake_crt_detect_hotplug(connector); |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 204 | |
Zhao Yakui | 771cb08 | 2009-03-03 18:07:52 +0800 | [diff] [blame] | 205 | /* |
| 206 | * On 4 series desktop, CRT detect sequence need to be done twice |
| 207 | * to get a reliable result. |
| 208 | */ |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 209 | |
Zhao Yakui | 771cb08 | 2009-03-03 18:07:52 +0800 | [diff] [blame] | 210 | if (IS_G4X(dev) && !IS_GM45(dev)) |
| 211 | tries = 2; |
| 212 | else |
| 213 | tries = 1; |
| 214 | hotplug_en = I915_READ(PORT_HOTPLUG_EN); |
Jesse Barnes | 5ca5828 | 2009-03-31 14:11:15 -0700 | [diff] [blame] | 215 | hotplug_en &= CRT_FORCE_HOTPLUG_MASK; |
Zhao Yakui | 771cb08 | 2009-03-03 18:07:52 +0800 | [diff] [blame] | 216 | hotplug_en |= CRT_HOTPLUG_FORCE_DETECT; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 217 | |
Ma Ling | e92597cf | 2009-05-13 14:46:12 +0800 | [diff] [blame] | 218 | if (IS_G4X(dev)) |
Zhao Yakui | 771cb08 | 2009-03-03 18:07:52 +0800 | [diff] [blame] | 219 | hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 220 | |
Zhao Yakui | 771cb08 | 2009-03-03 18:07:52 +0800 | [diff] [blame] | 221 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 222 | |
Zhao Yakui | 771cb08 | 2009-03-03 18:07:52 +0800 | [diff] [blame] | 223 | for (i = 0; i < tries ; i++) { |
| 224 | unsigned long timeout; |
| 225 | /* turn on the FORCE_DETECT */ |
| 226 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); |
| 227 | timeout = jiffies + msecs_to_jiffies(1000); |
| 228 | /* wait for FORCE_DETECT to go off */ |
| 229 | do { |
| 230 | if (!(I915_READ(PORT_HOTPLUG_EN) & |
| 231 | CRT_HOTPLUG_FORCE_DETECT)) |
| 232 | break; |
| 233 | msleep(1); |
| 234 | } while (time_after(timeout, jiffies)); |
| 235 | } |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 236 | |
Zhenyu Wang | 8e9e0ee | 2009-11-11 02:30:50 +0000 | [diff] [blame] | 237 | if ((I915_READ(PORT_HOTPLUG_STAT) & CRT_HOTPLUG_MONITOR_MASK) != |
| 238 | CRT_HOTPLUG_MONITOR_NONE) |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 239 | return true; |
| 240 | |
| 241 | return false; |
| 242 | } |
| 243 | |
| 244 | static bool intel_crt_detect_ddc(struct drm_connector *connector) |
| 245 | { |
| 246 | struct intel_output *intel_output = to_intel_output(connector); |
| 247 | |
| 248 | /* CRT should always be at 0, but check anyway */ |
| 249 | if (intel_output->type != INTEL_OUTPUT_ANALOG) |
| 250 | return false; |
| 251 | |
| 252 | return intel_ddc_probe(intel_output); |
| 253 | } |
| 254 | |
Ma Ling | e4a5d54 | 2009-05-26 11:31:00 +0800 | [diff] [blame] | 255 | static enum drm_connector_status |
| 256 | intel_crt_load_detect(struct drm_crtc *crtc, struct intel_output *intel_output) |
| 257 | { |
| 258 | struct drm_encoder *encoder = &intel_output->enc; |
| 259 | struct drm_device *dev = encoder->dev; |
| 260 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 261 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 262 | uint32_t pipe = intel_crtc->pipe; |
| 263 | uint32_t save_bclrpat; |
| 264 | uint32_t save_vtotal; |
| 265 | uint32_t vtotal, vactive; |
| 266 | uint32_t vsample; |
| 267 | uint32_t vblank, vblank_start, vblank_end; |
| 268 | uint32_t dsl; |
| 269 | uint32_t bclrpat_reg; |
| 270 | uint32_t vtotal_reg; |
| 271 | uint32_t vblank_reg; |
| 272 | uint32_t vsync_reg; |
| 273 | uint32_t pipeconf_reg; |
| 274 | uint32_t pipe_dsl_reg; |
| 275 | uint8_t st00; |
| 276 | enum drm_connector_status status; |
| 277 | |
| 278 | if (pipe == 0) { |
| 279 | bclrpat_reg = BCLRPAT_A; |
| 280 | vtotal_reg = VTOTAL_A; |
| 281 | vblank_reg = VBLANK_A; |
| 282 | vsync_reg = VSYNC_A; |
| 283 | pipeconf_reg = PIPEACONF; |
| 284 | pipe_dsl_reg = PIPEADSL; |
| 285 | } else { |
| 286 | bclrpat_reg = BCLRPAT_B; |
| 287 | vtotal_reg = VTOTAL_B; |
| 288 | vblank_reg = VBLANK_B; |
| 289 | vsync_reg = VSYNC_B; |
| 290 | pipeconf_reg = PIPEBCONF; |
| 291 | pipe_dsl_reg = PIPEBDSL; |
| 292 | } |
| 293 | |
| 294 | save_bclrpat = I915_READ(bclrpat_reg); |
| 295 | save_vtotal = I915_READ(vtotal_reg); |
| 296 | vblank = I915_READ(vblank_reg); |
| 297 | |
| 298 | vtotal = ((save_vtotal >> 16) & 0xfff) + 1; |
| 299 | vactive = (save_vtotal & 0x7ff) + 1; |
| 300 | |
| 301 | vblank_start = (vblank & 0xfff) + 1; |
| 302 | vblank_end = ((vblank >> 16) & 0xfff) + 1; |
| 303 | |
| 304 | /* Set the border color to purple. */ |
| 305 | I915_WRITE(bclrpat_reg, 0x500050); |
| 306 | |
| 307 | if (IS_I9XX(dev)) { |
| 308 | uint32_t pipeconf = I915_READ(pipeconf_reg); |
| 309 | I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER); |
| 310 | /* Wait for next Vblank to substitue |
| 311 | * border color for Color info */ |
| 312 | intel_wait_for_vblank(dev); |
| 313 | st00 = I915_READ8(VGA_MSR_WRITE); |
| 314 | status = ((st00 & (1 << 4)) != 0) ? |
| 315 | connector_status_connected : |
| 316 | connector_status_disconnected; |
| 317 | |
| 318 | I915_WRITE(pipeconf_reg, pipeconf); |
| 319 | } else { |
| 320 | bool restore_vblank = false; |
| 321 | int count, detect; |
| 322 | |
| 323 | /* |
| 324 | * If there isn't any border, add some. |
| 325 | * Yes, this will flicker |
| 326 | */ |
| 327 | if (vblank_start <= vactive && vblank_end >= vtotal) { |
| 328 | uint32_t vsync = I915_READ(vsync_reg); |
| 329 | uint32_t vsync_start = (vsync & 0xffff) + 1; |
| 330 | |
| 331 | vblank_start = vsync_start; |
| 332 | I915_WRITE(vblank_reg, |
| 333 | (vblank_start - 1) | |
| 334 | ((vblank_end - 1) << 16)); |
| 335 | restore_vblank = true; |
| 336 | } |
| 337 | /* sample in the vertical border, selecting the larger one */ |
| 338 | if (vblank_start - vactive >= vtotal - vblank_end) |
| 339 | vsample = (vblank_start + vactive) >> 1; |
| 340 | else |
| 341 | vsample = (vtotal + vblank_end) >> 1; |
| 342 | |
| 343 | /* |
| 344 | * Wait for the border to be displayed |
| 345 | */ |
| 346 | while (I915_READ(pipe_dsl_reg) >= vactive) |
| 347 | ; |
| 348 | while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample) |
| 349 | ; |
| 350 | /* |
| 351 | * Watch ST00 for an entire scanline |
| 352 | */ |
| 353 | detect = 0; |
| 354 | count = 0; |
| 355 | do { |
| 356 | count++; |
| 357 | /* Read the ST00 VGA status register */ |
| 358 | st00 = I915_READ8(VGA_MSR_WRITE); |
| 359 | if (st00 & (1 << 4)) |
| 360 | detect++; |
| 361 | } while ((I915_READ(pipe_dsl_reg) == dsl)); |
| 362 | |
| 363 | /* restore vblank if necessary */ |
| 364 | if (restore_vblank) |
| 365 | I915_WRITE(vblank_reg, vblank); |
| 366 | /* |
| 367 | * If more than 3/4 of the scanline detected a monitor, |
| 368 | * then it is assumed to be present. This works even on i830, |
| 369 | * where there isn't any way to force the border color across |
| 370 | * the screen |
| 371 | */ |
| 372 | status = detect * 4 > count * 3 ? |
| 373 | connector_status_connected : |
| 374 | connector_status_disconnected; |
| 375 | } |
| 376 | |
| 377 | /* Restore previous settings */ |
| 378 | I915_WRITE(bclrpat_reg, save_bclrpat); |
| 379 | |
| 380 | return status; |
| 381 | } |
| 382 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 383 | static enum drm_connector_status intel_crt_detect(struct drm_connector *connector) |
| 384 | { |
| 385 | struct drm_device *dev = connector->dev; |
Ma Ling | e4a5d54 | 2009-05-26 11:31:00 +0800 | [diff] [blame] | 386 | struct intel_output *intel_output = to_intel_output(connector); |
| 387 | struct drm_encoder *encoder = &intel_output->enc; |
| 388 | struct drm_crtc *crtc; |
| 389 | int dpms_mode; |
| 390 | enum drm_connector_status status; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 391 | |
| 392 | if (IS_I9XX(dev) && !IS_I915G(dev) && !IS_I915GM(dev)) { |
| 393 | if (intel_crt_detect_hotplug(connector)) |
| 394 | return connector_status_connected; |
| 395 | else |
| 396 | return connector_status_disconnected; |
| 397 | } |
| 398 | |
| 399 | if (intel_crt_detect_ddc(connector)) |
| 400 | return connector_status_connected; |
| 401 | |
Ma Ling | e4a5d54 | 2009-05-26 11:31:00 +0800 | [diff] [blame] | 402 | /* for pre-945g platforms use load detect */ |
| 403 | if (encoder->crtc && encoder->crtc->enabled) { |
| 404 | status = intel_crt_load_detect(encoder->crtc, intel_output); |
| 405 | } else { |
| 406 | crtc = intel_get_load_detect_pipe(intel_output, |
| 407 | NULL, &dpms_mode); |
| 408 | if (crtc) { |
| 409 | status = intel_crt_load_detect(crtc, intel_output); |
| 410 | intel_release_load_detect_pipe(intel_output, dpms_mode); |
| 411 | } else |
| 412 | status = connector_status_unknown; |
| 413 | } |
| 414 | |
| 415 | return status; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 416 | } |
| 417 | |
| 418 | static void intel_crt_destroy(struct drm_connector *connector) |
| 419 | { |
| 420 | struct intel_output *intel_output = to_intel_output(connector); |
| 421 | |
| 422 | intel_i2c_destroy(intel_output->ddc_bus); |
| 423 | drm_sysfs_connector_remove(connector); |
| 424 | drm_connector_cleanup(connector); |
| 425 | kfree(connector); |
| 426 | } |
| 427 | |
| 428 | static int intel_crt_get_modes(struct drm_connector *connector) |
| 429 | { |
ling.ma@intel.com | 8e4d36b | 2009-06-30 11:35:34 +0800 | [diff] [blame] | 430 | int ret; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 431 | struct intel_output *intel_output = to_intel_output(connector); |
Eric Anholt | 883e860 | 2009-07-10 12:28:30 -0700 | [diff] [blame] | 432 | struct i2c_adapter *ddcbus; |
ling.ma@intel.com | 8e4d36b | 2009-06-30 11:35:34 +0800 | [diff] [blame] | 433 | struct drm_device *dev = connector->dev; |
| 434 | |
| 435 | |
| 436 | ret = intel_ddc_get_modes(intel_output); |
| 437 | if (ret || !IS_G4X(dev)) |
| 438 | goto end; |
| 439 | |
| 440 | ddcbus = intel_output->ddc_bus; |
| 441 | /* Try to probe digital port for output in DVI-I -> VGA mode. */ |
| 442 | intel_output->ddc_bus = |
| 443 | intel_i2c_create(connector->dev, GPIOD, "CRTDDC_D"); |
| 444 | |
| 445 | if (!intel_output->ddc_bus) { |
| 446 | intel_output->ddc_bus = ddcbus; |
| 447 | dev_printk(KERN_ERR, &connector->dev->pdev->dev, |
| 448 | "DDC bus registration failed for CRTDDC_D.\n"); |
| 449 | goto end; |
| 450 | } |
| 451 | /* Try to get modes by GPIOD port */ |
| 452 | ret = intel_ddc_get_modes(intel_output); |
| 453 | intel_i2c_destroy(ddcbus); |
| 454 | |
| 455 | end: |
| 456 | return ret; |
| 457 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 458 | } |
| 459 | |
| 460 | static int intel_crt_set_property(struct drm_connector *connector, |
| 461 | struct drm_property *property, |
| 462 | uint64_t value) |
| 463 | { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 464 | return 0; |
| 465 | } |
| 466 | |
| 467 | /* |
| 468 | * Routines for controlling stuff on the analog port |
| 469 | */ |
| 470 | |
| 471 | static const struct drm_encoder_helper_funcs intel_crt_helper_funcs = { |
| 472 | .dpms = intel_crt_dpms, |
| 473 | .mode_fixup = intel_crt_mode_fixup, |
| 474 | .prepare = intel_encoder_prepare, |
| 475 | .commit = intel_encoder_commit, |
| 476 | .mode_set = intel_crt_mode_set, |
| 477 | }; |
| 478 | |
| 479 | static const struct drm_connector_funcs intel_crt_connector_funcs = { |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 480 | .dpms = drm_helper_connector_dpms, |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 481 | .detect = intel_crt_detect, |
| 482 | .fill_modes = drm_helper_probe_single_connector_modes, |
| 483 | .destroy = intel_crt_destroy, |
| 484 | .set_property = intel_crt_set_property, |
| 485 | }; |
| 486 | |
| 487 | static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs = { |
| 488 | .mode_valid = intel_crt_mode_valid, |
| 489 | .get_modes = intel_crt_get_modes, |
| 490 | .best_encoder = intel_best_encoder, |
| 491 | }; |
| 492 | |
Hannes Eder | b358d0a | 2008-12-18 21:18:47 +0100 | [diff] [blame] | 493 | static void intel_crt_enc_destroy(struct drm_encoder *encoder) |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 494 | { |
| 495 | drm_encoder_cleanup(encoder); |
| 496 | } |
| 497 | |
| 498 | static const struct drm_encoder_funcs intel_crt_enc_funcs = { |
| 499 | .destroy = intel_crt_enc_destroy, |
| 500 | }; |
| 501 | |
| 502 | void intel_crt_init(struct drm_device *dev) |
| 503 | { |
| 504 | struct drm_connector *connector; |
| 505 | struct intel_output *intel_output; |
David Müller (ELSOFT AG) | db54501 | 2009-08-29 08:54:45 +0200 | [diff] [blame] | 506 | struct drm_i915_private *dev_priv = dev->dev_private; |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 507 | u32 i2c_reg; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 508 | |
| 509 | intel_output = kzalloc(sizeof(struct intel_output), GFP_KERNEL); |
| 510 | if (!intel_output) |
| 511 | return; |
| 512 | |
| 513 | connector = &intel_output->base; |
| 514 | drm_connector_init(dev, &intel_output->base, |
| 515 | &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA); |
| 516 | |
| 517 | drm_encoder_init(dev, &intel_output->enc, &intel_crt_enc_funcs, |
| 518 | DRM_MODE_ENCODER_DAC); |
| 519 | |
| 520 | drm_mode_connector_attach_encoder(&intel_output->base, |
| 521 | &intel_output->enc); |
| 522 | |
| 523 | /* Set up the DDC bus. */ |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 524 | if (IS_IRONLAKE(dev)) |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 525 | i2c_reg = PCH_GPIOA; |
David Müller (ELSOFT AG) | db54501 | 2009-08-29 08:54:45 +0200 | [diff] [blame] | 526 | else { |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 527 | i2c_reg = GPIOA; |
David Müller (ELSOFT AG) | db54501 | 2009-08-29 08:54:45 +0200 | [diff] [blame] | 528 | /* Use VBT information for CRT DDC if available */ |
Shaohua Li | 29874f4 | 2009-11-18 15:15:02 +0800 | [diff] [blame] | 529 | if (dev_priv->crt_ddc_bus != 0) |
David Müller (ELSOFT AG) | db54501 | 2009-08-29 08:54:45 +0200 | [diff] [blame] | 530 | i2c_reg = dev_priv->crt_ddc_bus; |
| 531 | } |
Zhenyu Wang | 2c07245 | 2009-06-05 15:38:42 +0800 | [diff] [blame] | 532 | intel_output->ddc_bus = intel_i2c_create(dev, i2c_reg, "CRTDDC_A"); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 533 | if (!intel_output->ddc_bus) { |
| 534 | dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration " |
| 535 | "failed.\n"); |
| 536 | return; |
| 537 | } |
| 538 | |
| 539 | intel_output->type = INTEL_OUTPUT_ANALOG; |
Ma Ling | f8aed70 | 2009-08-24 13:50:24 +0800 | [diff] [blame] | 540 | intel_output->clone_mask = (1 << INTEL_SDVO_NON_TV_CLONE_BIT) | |
| 541 | (1 << INTEL_ANALOG_CLONE_BIT) | |
| 542 | (1 << INTEL_SDVO_LVDS_CLONE_BIT); |
| 543 | intel_output->crtc_mask = (1 << 0) | (1 << 1); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 544 | connector->interlace_allowed = 0; |
| 545 | connector->doublescan_allowed = 0; |
| 546 | |
| 547 | drm_encoder_helper_add(&intel_output->enc, &intel_crt_helper_funcs); |
| 548 | drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs); |
| 549 | |
| 550 | drm_sysfs_connector_add(connector); |
Jesse Barnes | b01f2c3 | 2009-12-11 11:07:17 -0800 | [diff] [blame^] | 551 | |
| 552 | dev_priv->hotplug_supported_mask |= CRT_HOTPLUG_INT_STATUS; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 553 | } |