Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2006 Dave Airlie <airlied@linux.ie> |
| 3 | * Copyright © 2006-2009 Intel Corporation |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 6 | * copy of this software and associated documentation files (the "Software"), |
| 7 | * to deal in the Software without restriction, including without limitation |
| 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 9 | * and/or sell copies of the Software, and to permit persons to whom the |
| 10 | * Software is furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice (including the next |
| 13 | * paragraph) shall be included in all copies or substantial portions of the |
| 14 | * Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 22 | * DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: |
| 25 | * Eric Anholt <eric@anholt.net> |
| 26 | * Jesse Barnes <jesse.barnes@intel.com> |
| 27 | */ |
| 28 | |
| 29 | #include <linux/i2c.h> |
| 30 | #include <linux/delay.h> |
| 31 | #include "drmP.h" |
| 32 | #include "drm.h" |
| 33 | #include "drm_crtc.h" |
Keith Packard | aa93d63 | 2009-05-05 09:52:46 -0700 | [diff] [blame] | 34 | #include "drm_edid.h" |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 35 | #include "intel_drv.h" |
| 36 | #include "i915_drm.h" |
| 37 | #include "i915_drv.h" |
| 38 | |
| 39 | struct intel_hdmi_priv { |
| 40 | u32 sdvox_reg; |
| 41 | u32 save_SDVOX; |
Ma Ling | 9dff6af | 2009-04-02 13:13:26 +0800 | [diff] [blame] | 42 | bool has_hdmi_sink; |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 43 | }; |
| 44 | |
| 45 | static void intel_hdmi_mode_set(struct drm_encoder *encoder, |
| 46 | struct drm_display_mode *mode, |
| 47 | struct drm_display_mode *adjusted_mode) |
| 48 | { |
| 49 | struct drm_device *dev = encoder->dev; |
| 50 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 51 | struct drm_crtc *crtc = encoder->crtc; |
| 52 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 53 | struct intel_output *intel_output = enc_to_intel_output(encoder); |
| 54 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; |
| 55 | u32 sdvox; |
| 56 | |
| 57 | sdvox = SDVO_ENCODING_HDMI | |
| 58 | SDVO_BORDER_ENABLE | |
| 59 | SDVO_VSYNC_ACTIVE_HIGH | |
Zhenyu Wang | 56d21b0 | 2009-06-17 09:43:25 +0800 | [diff] [blame] | 60 | SDVO_HSYNC_ACTIVE_HIGH; |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 61 | |
| 62 | if (hdmi_priv->has_hdmi_sink) |
| 63 | sdvox |= SDVO_AUDIO_ENABLE; |
| 64 | |
| 65 | if (intel_crtc->pipe == 1) |
| 66 | sdvox |= SDVO_PIPE_B_SELECT; |
| 67 | |
| 68 | I915_WRITE(hdmi_priv->sdvox_reg, sdvox); |
| 69 | POSTING_READ(hdmi_priv->sdvox_reg); |
| 70 | } |
| 71 | |
| 72 | static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode) |
| 73 | { |
| 74 | struct drm_device *dev = encoder->dev; |
| 75 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 76 | struct intel_output *intel_output = enc_to_intel_output(encoder); |
| 77 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; |
| 78 | u32 temp; |
| 79 | |
Zhenyu Wang | d8a2d0e | 2009-11-02 07:52:30 +0000 | [diff] [blame] | 80 | temp = I915_READ(hdmi_priv->sdvox_reg); |
| 81 | |
| 82 | /* HW workaround, need to toggle enable bit off and on for 12bpc, but |
| 83 | * we do this anyway which shows more stable in testing. |
| 84 | */ |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 85 | if (IS_IRONLAKE(dev)) { |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 86 | I915_WRITE(hdmi_priv->sdvox_reg, temp & ~SDVO_ENABLE); |
Zhenyu Wang | d8a2d0e | 2009-11-02 07:52:30 +0000 | [diff] [blame] | 87 | POSTING_READ(hdmi_priv->sdvox_reg); |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 88 | } |
Zhenyu Wang | d8a2d0e | 2009-11-02 07:52:30 +0000 | [diff] [blame] | 89 | |
| 90 | if (mode != DRM_MODE_DPMS_ON) { |
| 91 | temp &= ~SDVO_ENABLE; |
| 92 | } else { |
| 93 | temp |= SDVO_ENABLE; |
| 94 | } |
| 95 | |
| 96 | I915_WRITE(hdmi_priv->sdvox_reg, temp); |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 97 | POSTING_READ(hdmi_priv->sdvox_reg); |
Zhenyu Wang | d8a2d0e | 2009-11-02 07:52:30 +0000 | [diff] [blame] | 98 | |
| 99 | /* HW workaround, need to write this twice for issue that may result |
| 100 | * in first write getting masked. |
| 101 | */ |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 102 | if (IS_IRONLAKE(dev)) { |
Zhenyu Wang | d8a2d0e | 2009-11-02 07:52:30 +0000 | [diff] [blame] | 103 | I915_WRITE(hdmi_priv->sdvox_reg, temp); |
| 104 | POSTING_READ(hdmi_priv->sdvox_reg); |
| 105 | } |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | static void intel_hdmi_save(struct drm_connector *connector) |
| 109 | { |
| 110 | struct drm_device *dev = connector->dev; |
| 111 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 112 | struct intel_output *intel_output = to_intel_output(connector); |
| 113 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; |
| 114 | |
| 115 | hdmi_priv->save_SDVOX = I915_READ(hdmi_priv->sdvox_reg); |
| 116 | } |
| 117 | |
| 118 | static void intel_hdmi_restore(struct drm_connector *connector) |
| 119 | { |
| 120 | struct drm_device *dev = connector->dev; |
| 121 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 122 | struct intel_output *intel_output = to_intel_output(connector); |
| 123 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; |
| 124 | |
| 125 | I915_WRITE(hdmi_priv->sdvox_reg, hdmi_priv->save_SDVOX); |
| 126 | POSTING_READ(hdmi_priv->sdvox_reg); |
| 127 | } |
| 128 | |
| 129 | static int intel_hdmi_mode_valid(struct drm_connector *connector, |
| 130 | struct drm_display_mode *mode) |
| 131 | { |
| 132 | if (mode->clock > 165000) |
| 133 | return MODE_CLOCK_HIGH; |
| 134 | if (mode->clock < 20000) |
| 135 | return MODE_CLOCK_HIGH; |
| 136 | |
| 137 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) |
| 138 | return MODE_NO_DBLESCAN; |
| 139 | |
| 140 | return MODE_OK; |
| 141 | } |
| 142 | |
| 143 | static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder, |
| 144 | struct drm_display_mode *mode, |
| 145 | struct drm_display_mode *adjusted_mode) |
| 146 | { |
| 147 | return true; |
| 148 | } |
| 149 | |
Keith Packard | aa93d63 | 2009-05-05 09:52:46 -0700 | [diff] [blame] | 150 | static enum drm_connector_status |
ling.ma@intel.com | 2ded9e2 | 2009-07-16 17:23:09 +0800 | [diff] [blame] | 151 | intel_hdmi_detect(struct drm_connector *connector) |
Ma Ling | 9dff6af | 2009-04-02 13:13:26 +0800 | [diff] [blame] | 152 | { |
| 153 | struct intel_output *intel_output = to_intel_output(connector); |
| 154 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; |
| 155 | struct edid *edid = NULL; |
Keith Packard | aa93d63 | 2009-05-05 09:52:46 -0700 | [diff] [blame] | 156 | enum drm_connector_status status = connector_status_disconnected; |
Ma Ling | 9dff6af | 2009-04-02 13:13:26 +0800 | [diff] [blame] | 157 | |
ling.ma@intel.com | 2ded9e2 | 2009-07-16 17:23:09 +0800 | [diff] [blame] | 158 | hdmi_priv->has_hdmi_sink = false; |
Ma Ling | 9dff6af | 2009-04-02 13:13:26 +0800 | [diff] [blame] | 159 | edid = drm_get_edid(&intel_output->base, |
Keith Packard | f9c10a9 | 2009-05-30 12:16:25 -0700 | [diff] [blame] | 160 | intel_output->ddc_bus); |
ling.ma@intel.com | 2ded9e2 | 2009-07-16 17:23:09 +0800 | [diff] [blame] | 161 | |
Keith Packard | aa93d63 | 2009-05-05 09:52:46 -0700 | [diff] [blame] | 162 | if (edid) { |
Eric Anholt | be9f1c4 | 2009-06-21 22:14:55 -0700 | [diff] [blame] | 163 | if (edid->input & DRM_EDID_INPUT_DIGITAL) { |
Keith Packard | aa93d63 | 2009-05-05 09:52:46 -0700 | [diff] [blame] | 164 | status = connector_status_connected; |
| 165 | hdmi_priv->has_hdmi_sink = drm_detect_hdmi_monitor(edid); |
| 166 | } |
Ma Ling | 9dff6af | 2009-04-02 13:13:26 +0800 | [diff] [blame] | 167 | intel_output->base.display_info.raw_edid = NULL; |
Keith Packard | aa93d63 | 2009-05-05 09:52:46 -0700 | [diff] [blame] | 168 | kfree(edid); |
Ma Ling | 9dff6af | 2009-04-02 13:13:26 +0800 | [diff] [blame] | 169 | } |
ling.ma@intel.com | 2ded9e2 | 2009-07-16 17:23:09 +0800 | [diff] [blame] | 170 | |
Keith Packard | aa93d63 | 2009-05-05 09:52:46 -0700 | [diff] [blame] | 171 | return status; |
Ma Ling | 9dff6af | 2009-04-02 13:13:26 +0800 | [diff] [blame] | 172 | } |
| 173 | |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 174 | static int intel_hdmi_get_modes(struct drm_connector *connector) |
| 175 | { |
| 176 | struct intel_output *intel_output = to_intel_output(connector); |
| 177 | |
| 178 | /* We should parse the EDID data and find out if it's an HDMI sink so |
| 179 | * we can send audio to it. |
| 180 | */ |
| 181 | |
| 182 | return intel_ddc_get_modes(intel_output); |
| 183 | } |
| 184 | |
| 185 | static void intel_hdmi_destroy(struct drm_connector *connector) |
| 186 | { |
| 187 | struct intel_output *intel_output = to_intel_output(connector); |
| 188 | |
| 189 | if (intel_output->i2c_bus) |
| 190 | intel_i2c_destroy(intel_output->i2c_bus); |
| 191 | drm_sysfs_connector_remove(connector); |
| 192 | drm_connector_cleanup(connector); |
| 193 | kfree(intel_output); |
| 194 | } |
| 195 | |
| 196 | static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = { |
| 197 | .dpms = intel_hdmi_dpms, |
| 198 | .mode_fixup = intel_hdmi_mode_fixup, |
| 199 | .prepare = intel_encoder_prepare, |
| 200 | .mode_set = intel_hdmi_mode_set, |
| 201 | .commit = intel_encoder_commit, |
| 202 | }; |
| 203 | |
| 204 | static const struct drm_connector_funcs intel_hdmi_connector_funcs = { |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 205 | .dpms = drm_helper_connector_dpms, |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 206 | .save = intel_hdmi_save, |
| 207 | .restore = intel_hdmi_restore, |
| 208 | .detect = intel_hdmi_detect, |
| 209 | .fill_modes = drm_helper_probe_single_connector_modes, |
| 210 | .destroy = intel_hdmi_destroy, |
| 211 | }; |
| 212 | |
| 213 | static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = { |
| 214 | .get_modes = intel_hdmi_get_modes, |
| 215 | .mode_valid = intel_hdmi_mode_valid, |
| 216 | .best_encoder = intel_best_encoder, |
| 217 | }; |
| 218 | |
| 219 | static void intel_hdmi_enc_destroy(struct drm_encoder *encoder) |
| 220 | { |
| 221 | drm_encoder_cleanup(encoder); |
| 222 | } |
| 223 | |
| 224 | static const struct drm_encoder_funcs intel_hdmi_enc_funcs = { |
| 225 | .destroy = intel_hdmi_enc_destroy, |
| 226 | }; |
| 227 | |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 228 | void intel_hdmi_init(struct drm_device *dev, int sdvox_reg) |
| 229 | { |
| 230 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 231 | struct drm_connector *connector; |
| 232 | struct intel_output *intel_output; |
| 233 | struct intel_hdmi_priv *hdmi_priv; |
| 234 | |
| 235 | intel_output = kcalloc(sizeof(struct intel_output) + |
| 236 | sizeof(struct intel_hdmi_priv), 1, GFP_KERNEL); |
| 237 | if (!intel_output) |
| 238 | return; |
| 239 | hdmi_priv = (struct intel_hdmi_priv *)(intel_output + 1); |
| 240 | |
| 241 | connector = &intel_output->base; |
| 242 | drm_connector_init(dev, connector, &intel_hdmi_connector_funcs, |
Adam Jackson | 8d91104 | 2009-09-23 15:08:29 -0400 | [diff] [blame] | 243 | DRM_MODE_CONNECTOR_HDMIA); |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 244 | drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs); |
| 245 | |
| 246 | intel_output->type = INTEL_OUTPUT_HDMI; |
| 247 | |
| 248 | connector->interlace_allowed = 0; |
| 249 | connector->doublescan_allowed = 0; |
Ma Ling | f8aed70 | 2009-08-24 13:50:24 +0800 | [diff] [blame] | 250 | intel_output->crtc_mask = (1 << 0) | (1 << 1); |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 251 | |
| 252 | /* Set up the DDC bus. */ |
Ma Ling | f8aed70 | 2009-08-24 13:50:24 +0800 | [diff] [blame] | 253 | if (sdvox_reg == SDVOB) { |
| 254 | intel_output->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT); |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 255 | intel_output->ddc_bus = intel_i2c_create(dev, GPIOE, "HDMIB"); |
Jesse Barnes | b01f2c3 | 2009-12-11 11:07:17 -0800 | [diff] [blame] | 256 | dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS; |
Ma Ling | f8aed70 | 2009-08-24 13:50:24 +0800 | [diff] [blame] | 257 | } else if (sdvox_reg == SDVOC) { |
| 258 | intel_output->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT); |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 259 | intel_output->ddc_bus = intel_i2c_create(dev, GPIOD, "HDMIC"); |
Jesse Barnes | b01f2c3 | 2009-12-11 11:07:17 -0800 | [diff] [blame] | 260 | dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS; |
Ma Ling | f8aed70 | 2009-08-24 13:50:24 +0800 | [diff] [blame] | 261 | } else if (sdvox_reg == HDMIB) { |
| 262 | intel_output->clone_mask = (1 << INTEL_HDMID_CLONE_BIT); |
Zhenyu Wang | 30ad48b | 2009-06-05 15:38:43 +0800 | [diff] [blame] | 263 | intel_output->ddc_bus = intel_i2c_create(dev, PCH_GPIOE, |
| 264 | "HDMIB"); |
Jesse Barnes | b01f2c3 | 2009-12-11 11:07:17 -0800 | [diff] [blame] | 265 | dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS; |
Ma Ling | f8aed70 | 2009-08-24 13:50:24 +0800 | [diff] [blame] | 266 | } else if (sdvox_reg == HDMIC) { |
| 267 | intel_output->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT); |
Zhenyu Wang | 30ad48b | 2009-06-05 15:38:43 +0800 | [diff] [blame] | 268 | intel_output->ddc_bus = intel_i2c_create(dev, PCH_GPIOD, |
| 269 | "HDMIC"); |
Jesse Barnes | b01f2c3 | 2009-12-11 11:07:17 -0800 | [diff] [blame] | 270 | dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS; |
Ma Ling | f8aed70 | 2009-08-24 13:50:24 +0800 | [diff] [blame] | 271 | } else if (sdvox_reg == HDMID) { |
| 272 | intel_output->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT); |
Zhenyu Wang | 30ad48b | 2009-06-05 15:38:43 +0800 | [diff] [blame] | 273 | intel_output->ddc_bus = intel_i2c_create(dev, PCH_GPIOF, |
| 274 | "HDMID"); |
Jesse Barnes | b01f2c3 | 2009-12-11 11:07:17 -0800 | [diff] [blame] | 275 | dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS; |
Ma Ling | f8aed70 | 2009-08-24 13:50:24 +0800 | [diff] [blame] | 276 | } |
Eric Anholt | 7d57382 | 2009-01-02 13:33:00 -0800 | [diff] [blame] | 277 | if (!intel_output->ddc_bus) |
| 278 | goto err_connector; |
| 279 | |
| 280 | hdmi_priv->sdvox_reg = sdvox_reg; |
| 281 | intel_output->dev_priv = hdmi_priv; |
| 282 | |
| 283 | drm_encoder_init(dev, &intel_output->enc, &intel_hdmi_enc_funcs, |
| 284 | DRM_MODE_ENCODER_TMDS); |
| 285 | drm_encoder_helper_add(&intel_output->enc, &intel_hdmi_helper_funcs); |
| 286 | |
| 287 | drm_mode_connector_attach_encoder(&intel_output->base, |
| 288 | &intel_output->enc); |
| 289 | drm_sysfs_connector_add(connector); |
| 290 | |
| 291 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
| 292 | * 0xd. Failure to do so will result in spurious interrupts being |
| 293 | * generated on the port when a cable is not attached. |
| 294 | */ |
| 295 | if (IS_G4X(dev) && !IS_GM45(dev)) { |
| 296 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); |
| 297 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); |
| 298 | } |
| 299 | |
| 300 | return; |
| 301 | |
| 302 | err_connector: |
| 303 | drm_connector_cleanup(connector); |
| 304 | kfree(intel_output); |
| 305 | |
| 306 | return; |
| 307 | } |