drivers/gpu/drm/i915/intel_hdmi.c

   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/slab.h>
  31 #include <linux/delay.h>
  32 #include "drmP.h"
  33 #include "drm.h"
  34 #include "drm_crtc.h"
  35 #include "drm_edid.h"
  36 #include "intel_drv.h"
  37 #include "i915_drm.h"
  38 #include "i915_drv.h"
  39
  40 struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
  41 {
  42         return container_of(encoder, struct intel_hdmi, base.base);
  43 }
  44
  45 static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
  46 {
  47         return container_of(intel_attached_encoder(connector),
  48                             struct intel_hdmi, base);
  49 }
  50
  51 void intel_dip_infoframe_csum(struct dip_infoframe *frame)
  52 {
  53         uint8_t *data = (uint8_t *)frame;
  54         uint8_t sum = 0;
  55         unsigned i;
  56
  57         frame->checksum = 0;
  58         frame->ecc = 0;
  59
  60         for (i = 0; i < frame->len + DIP_HEADER_SIZE; i++)
  61                 sum += data[i];
  62
  63         frame->checksum = 0x100 - sum;
  64 }
  65
  66 static u32 g4x_infoframe_index(struct dip_infoframe *frame)
  67 {
  68         switch (frame->type) {
  69         case DIP_TYPE_AVI:
  70                 return VIDEO_DIP_SELECT_AVI;
  71         case DIP_TYPE_SPD:
  72                 return VIDEO_DIP_SELECT_SPD;
  73         default:
  74                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
  75                 return 0;
  76         }
  77 }
  78
  79 static u32 g4x_infoframe_enable(struct dip_infoframe *frame)
  80 {
  81         switch (frame->type) {
  82         case DIP_TYPE_AVI:
  83                 return VIDEO_DIP_ENABLE_AVI;
  84         case DIP_TYPE_SPD:
  85                 return VIDEO_DIP_ENABLE_SPD;
  86         default:
  87                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
  88                 return 0;
  89         }
  90 }
  91
  92 static u32 hsw_infoframe_enable(struct dip_infoframe *frame)
  93 {
  94         switch (frame->type) {
  95         case DIP_TYPE_AVI:
  96                 return VIDEO_DIP_ENABLE_AVI_HSW;
  97         case DIP_TYPE_SPD:
  98                 return VIDEO_DIP_ENABLE_SPD_HSW;
  99         default:
 100                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
 101                 return 0;
 102         }
 103 }
 104
 105 static u32 hsw_infoframe_data_reg(struct dip_infoframe *frame, enum pipe pipe)
 106 {
 107         switch (frame->type) {
 108         case DIP_TYPE_AVI:
 109                 return HSW_TVIDEO_DIP_AVI_DATA(pipe);
 110         case DIP_TYPE_SPD:
 111                 return HSW_TVIDEO_DIP_SPD_DATA(pipe);
 112         default:
 113                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
 114                 return 0;
 115         }
 116 }
 117
 118 static void g4x_write_infoframe(struct drm_encoder *encoder,
 119                                 struct dip_infoframe *frame)
 120 {
 121         uint32_t *data = (uint32_t *)frame;
 122         struct drm_device *dev = encoder->dev;
 123         struct drm_i915_private *dev_priv = dev->dev_private;
 124         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 125         u32 val = I915_READ(VIDEO_DIP_CTL);
 126         unsigned i, len = DIP_HEADER_SIZE + frame->len;
 127
 128         val &= ~VIDEO_DIP_PORT_MASK;
 129         if (intel_hdmi->sdvox_reg == SDVOB)
 130                 val |= VIDEO_DIP_PORT_B;
 131         else if (intel_hdmi->sdvox_reg == SDVOC)
 132                 val |= VIDEO_DIP_PORT_C;
 133         else
 134                 return;
 135
 136         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 137         val |= g4x_infoframe_index(frame);
 138
 139         val &= ~g4x_infoframe_enable(frame);
 140         val |= VIDEO_DIP_ENABLE;
 141
 142         I915_WRITE(VIDEO_DIP_CTL, val);
 143
 144         for (i = 0; i < len; i += 4) {
 145                 I915_WRITE(VIDEO_DIP_DATA, *data);
 146                 data++;
 147         }
 148
 149         val |= g4x_infoframe_enable(frame);
 150         val &= ~VIDEO_DIP_FREQ_MASK;
 151         val |= VIDEO_DIP_FREQ_VSYNC;
 152
 153         I915_WRITE(VIDEO_DIP_CTL, val);
 154 }
 155
 156 static void ibx_write_infoframe(struct drm_encoder *encoder,
 157                                 struct dip_infoframe *frame)
 158 {
 159         uint32_t *data = (uint32_t *)frame;
 160         struct drm_device *dev = encoder->dev;
 161         struct drm_i915_private *dev_priv = dev->dev_private;
 162         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 163         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 164         int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 165         unsigned i, len = DIP_HEADER_SIZE + frame->len;
 166         u32 val = I915_READ(reg);
 167
 168         val &= ~VIDEO_DIP_PORT_MASK;
 169         switch (intel_hdmi->sdvox_reg) {
 170         case HDMIB:
 171                 val |= VIDEO_DIP_PORT_B;
 172                 break;
 173         case HDMIC:
 174                 val |= VIDEO_DIP_PORT_C;
 175                 break;
 176         case HDMID:
 177                 val |= VIDEO_DIP_PORT_D;
 178                 break;
 179         default:
 180                 return;
 181         }
 182
 183         intel_wait_for_vblank(dev, intel_crtc->pipe);
 184
 185         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 186         val |= g4x_infoframe_index(frame);
 187
 188         val &= ~g4x_infoframe_enable(frame);
 189         val |= VIDEO_DIP_ENABLE;
 190
 191         I915_WRITE(reg, val);
 192
 193         for (i = 0; i < len; i += 4) {
 194                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 195                 data++;
 196         }
 197
 198         val |= g4x_infoframe_enable(frame);
 199         val &= ~VIDEO_DIP_FREQ_MASK;
 200         val |= VIDEO_DIP_FREQ_VSYNC;
 201
 202         I915_WRITE(reg, val);
 203 }
 204
 205 static void cpt_write_infoframe(struct drm_encoder *encoder,
 206                                 struct dip_infoframe *frame)
 207 {
 208         uint32_t *data = (uint32_t *)frame;
 209         struct drm_device *dev = encoder->dev;
 210         struct drm_i915_private *dev_priv = dev->dev_private;
 211         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 212         int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 213         unsigned i, len = DIP_HEADER_SIZE + frame->len;
 214         u32 val = I915_READ(reg);
 215
 216         intel_wait_for_vblank(dev, intel_crtc->pipe);
 217
 218         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 219         val |= g4x_infoframe_index(frame);
 220
 221         /* The DIP control register spec says that we need to update the AVI
 222          * infoframe without clearing its enable bit */
 223         if (frame->type == DIP_TYPE_AVI)
 224                 val |= VIDEO_DIP_ENABLE_AVI;
 225         else
 226                 val &= ~g4x_infoframe_enable(frame);
 227
 228         val |= VIDEO_DIP_ENABLE;
 229
 230         I915_WRITE(reg, val);
 231
 232         for (i = 0; i < len; i += 4) {
 233                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 234                 data++;
 235         }
 236
 237         val |= g4x_infoframe_enable(frame);
 238         val &= ~VIDEO_DIP_FREQ_MASK;
 239         val |= VIDEO_DIP_FREQ_VSYNC;
 240
 241         I915_WRITE(reg, val);
 242 }
 243
 244 static void vlv_write_infoframe(struct drm_encoder *encoder,
 245                                      struct dip_infoframe *frame)
 246 {
 247         uint32_t *data = (uint32_t *)frame;
 248         struct drm_device *dev = encoder->dev;
 249         struct drm_i915_private *dev_priv = dev->dev_private;
 250         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 251         int reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
 252         unsigned i, len = DIP_HEADER_SIZE + frame->len;
 253         u32 val = I915_READ(reg);
 254
 255         intel_wait_for_vblank(dev, intel_crtc->pipe);
 256
 257         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 258         val |= g4x_infoframe_index(frame);
 259
 260         val &= ~g4x_infoframe_enable(frame);
 261         val |= VIDEO_DIP_ENABLE;
 262
 263         I915_WRITE(reg, val);
 264
 265         for (i = 0; i < len; i += 4) {
 266                 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 267                 data++;
 268         }
 269
 270         val |= g4x_infoframe_enable(frame);
 271         val &= ~VIDEO_DIP_FREQ_MASK;
 272         val |= VIDEO_DIP_FREQ_VSYNC;
 273
 274         I915_WRITE(reg, val);
 275 }
 276
 277 static void hsw_write_infoframe(struct drm_encoder *encoder,
 278                                 struct dip_infoframe *frame)
 279 {
 280         uint32_t *data = (uint32_t *)frame;
 281         struct drm_device *dev = encoder->dev;
 282         struct drm_i915_private *dev_priv = dev->dev_private;
 283         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 284         u32 ctl_reg = HSW_TVIDEO_DIP_CTL(intel_crtc->pipe);
 285         u32 data_reg = hsw_infoframe_data_reg(frame, intel_crtc->pipe);
 286         unsigned int i, len = DIP_HEADER_SIZE + frame->len;
 287         u32 val = I915_READ(ctl_reg);
 288
 289         if (data_reg == 0)
 290                 return;
 291
 292         intel_wait_for_vblank(dev, intel_crtc->pipe);
 293
 294         val &= ~hsw_infoframe_enable(frame);
 295         I915_WRITE(ctl_reg, val);
 296
 297         for (i = 0; i < len; i += 4) {
 298                 I915_WRITE(data_reg + i, *data);
 299                 data++;
 300         }
 301
 302         val |= hsw_infoframe_enable(frame);
 303         I915_WRITE(ctl_reg, val);
 304 }
 305
 306 static void intel_set_infoframe(struct drm_encoder *encoder,
 307                                 struct dip_infoframe *frame)
 308 {
 309         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 310
 311         if (!intel_hdmi->has_hdmi_sink)
 312                 return;
 313
 314         intel_dip_infoframe_csum(frame);
 315         intel_hdmi->write_infoframe(encoder, frame);
 316 }
 317
 318 void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
 319                                          struct drm_display_mode *adjusted_mode)
 320 {
 321         struct dip_infoframe avi_if = {
 322                 .type = DIP_TYPE_AVI,
 323                 .ver = DIP_VERSION_AVI,
 324                 .len = DIP_LEN_AVI,
 325         };
 326
 327         if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
 328                 avi_if.body.avi.YQ_CN_PR |= DIP_AVI_PR_2;
 329
 330         intel_set_infoframe(encoder, &avi_if);
 331 }
 332
 333 void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
 334 {
 335         struct dip_infoframe spd_if;
 336
 337         memset(&spd_if, 0, sizeof(spd_if));
 338         spd_if.type = DIP_TYPE_SPD;
 339         spd_if.ver = DIP_VERSION_SPD;
 340         spd_if.len = DIP_LEN_SPD;
 341         strcpy(spd_if.body.spd.vn, "Intel");
 342         strcpy(spd_if.body.spd.pd, "Integrated gfx");
 343         spd_if.body.spd.sdi = DIP_SPD_PC;
 344
 345         intel_set_infoframe(encoder, &spd_if);
 346 }
 347
 348 static void intel_hdmi_mode_set(struct drm_encoder *encoder,
 349                                 struct drm_display_mode *mode,
 350                                 struct drm_display_mode *adjusted_mode)
 351 {
 352         struct drm_device *dev = encoder->dev;
 353         struct drm_i915_private *dev_priv = dev->dev_private;
 354         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 355         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 356         u32 sdvox;
 357
 358         sdvox = SDVO_ENCODING_HDMI | SDVO_BORDER_ENABLE;
 359         if (!HAS_PCH_SPLIT(dev))
 360                 sdvox |= intel_hdmi->color_range;
 361         if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
 362                 sdvox |= SDVO_VSYNC_ACTIVE_HIGH;
 363         if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
 364                 sdvox |= SDVO_HSYNC_ACTIVE_HIGH;
 365
 366         if (intel_crtc->bpp > 24)
 367                 sdvox |= COLOR_FORMAT_12bpc;
 368         else
 369                 sdvox |= COLOR_FORMAT_8bpc;
 370
 371         /* Required on CPT */
 372         if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
 373                 sdvox |= HDMI_MODE_SELECT;
 374
 375         if (intel_hdmi->has_audio) {
 376                 DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
 377                                  pipe_name(intel_crtc->pipe));
 378                 sdvox |= SDVO_AUDIO_ENABLE;
 379                 sdvox |= SDVO_NULL_PACKETS_DURING_VSYNC;
 380                 intel_write_eld(encoder, adjusted_mode);
 381         }
 382
 383         if (HAS_PCH_CPT(dev))
 384                 sdvox |= PORT_TRANS_SEL_CPT(intel_crtc->pipe);
 385         else if (intel_crtc->pipe == 1)
 386                 sdvox |= SDVO_PIPE_B_SELECT;
 387
 388         I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
 389         POSTING_READ(intel_hdmi->sdvox_reg);
 390
 391         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 392         intel_hdmi_set_spd_infoframe(encoder);
 393 }
 394
 395 static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)
 396 {
 397         struct drm_device *dev = encoder->dev;
 398         struct drm_i915_private *dev_priv = dev->dev_private;
 399         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 400         u32 temp;
 401         u32 enable_bits = SDVO_ENABLE;
 402
 403         if (intel_hdmi->has_audio)
 404                 enable_bits |= SDVO_AUDIO_ENABLE;
 405
 406         temp = I915_READ(intel_hdmi->sdvox_reg);
 407
 408         /* HW workaround, need to toggle enable bit off and on for 12bpc, but
 409          * we do this anyway which shows more stable in testing.
 410          */
 411         if (HAS_PCH_SPLIT(dev)) {
 412                 I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
 413                 POSTING_READ(intel_hdmi->sdvox_reg);
 414         }
 415
 416         if (mode != DRM_MODE_DPMS_ON) {
 417                 temp &= ~enable_bits;
 418         } else {
 419                 temp |= enable_bits;
 420         }
 421
 422         I915_WRITE(intel_hdmi->sdvox_reg, temp);
 423         POSTING_READ(intel_hdmi->sdvox_reg);
 424
 425         /* HW workaround, need to write this twice for issue that may result
 426          * in first write getting masked.
 427          */
 428         if (HAS_PCH_SPLIT(dev)) {
 429                 I915_WRITE(intel_hdmi->sdvox_reg, temp);
 430                 POSTING_READ(intel_hdmi->sdvox_reg);
 431         }
 432 }
 433
 434 static int intel_hdmi_mode_valid(struct drm_connector *connector,
 435                                  struct drm_display_mode *mode)
 436 {
 437         if (mode->clock > 165000)
 438                 return MODE_CLOCK_HIGH;
 439         if (mode->clock < 20000)
 440                 return MODE_CLOCK_LOW;
 441
 442         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
 443                 return MODE_NO_DBLESCAN;
 444
 445         return MODE_OK;
 446 }
 447
 448 static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
 449                                   struct drm_display_mode *mode,
 450                                   struct drm_display_mode *adjusted_mode)
 451 {
 452         return true;
 453 }
 454
 455 static enum drm_connector_status
 456 intel_hdmi_detect(struct drm_connector *connector, bool force)
 457 {
 458         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
 459         struct drm_i915_private *dev_priv = connector->dev->dev_private;
 460         struct edid *edid;
 461         enum drm_connector_status status = connector_status_disconnected;
 462
 463         intel_hdmi->has_hdmi_sink = false;
 464         intel_hdmi->has_audio = false;
 465         edid = drm_get_edid(connector,
 466                             intel_gmbus_get_adapter(dev_priv,
 467                                                     intel_hdmi->ddc_bus));
 468
 469         if (edid) {
 470                 if (edid->input & DRM_EDID_INPUT_DIGITAL) {
 471                         status = connector_status_connected;
 472                         if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
 473                                 intel_hdmi->has_hdmi_sink =
 474                                                 drm_detect_hdmi_monitor(edid);
 475                         intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
 476                 }
 477                 connector->display_info.raw_edid = NULL;
 478                 kfree(edid);
 479         }
 480
 481         if (status == connector_status_connected) {
 482                 if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
 483                         intel_hdmi->has_audio =
 484                                 (intel_hdmi->force_audio == HDMI_AUDIO_ON);
 485         }
 486
 487         return status;
 488 }
 489
 490 static int intel_hdmi_get_modes(struct drm_connector *connector)
 491 {
 492         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
 493         struct drm_i915_private *dev_priv = connector->dev->dev_private;
 494
 495         /* We should parse the EDID data and find out if it's an HDMI sink so
 496          * we can send audio to it.
 497          */
 498
 499         return intel_ddc_get_modes(connector,
 500                                    intel_gmbus_get_adapter(dev_priv,
 501                                                            intel_hdmi->ddc_bus));
 502 }
 503
 504 static bool
 505 intel_hdmi_detect_audio(struct drm_connector *connector)
 506 {
 507         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
 508         struct drm_i915_private *dev_priv = connector->dev->dev_private;
 509         struct edid *edid;
 510         bool has_audio = false;
 511
 512         edid = drm_get_edid(connector,
 513                             intel_gmbus_get_adapter(dev_priv,
 514                                                     intel_hdmi->ddc_bus));
 515         if (edid) {
 516                 if (edid->input & DRM_EDID_INPUT_DIGITAL)
 517                         has_audio = drm_detect_monitor_audio(edid);
 518
 519                 connector->display_info.raw_edid = NULL;
 520                 kfree(edid);
 521         }
 522
 523         return has_audio;
 524 }
 525
 526 static int
 527 intel_hdmi_set_property(struct drm_connector *connector,
 528                         struct drm_property *property,
 529                         uint64_t val)
 530 {
 531         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
 532         struct drm_i915_private *dev_priv = connector->dev->dev_private;
 533         int ret;
 534
 535         ret = drm_connector_property_set_value(connector, property, val);
 536         if (ret)
 537                 return ret;
 538
 539         if (property == dev_priv->force_audio_property) {
 540                 enum hdmi_force_audio i = val;
 541                 bool has_audio;
 542
 543                 if (i == intel_hdmi->force_audio)
 544                         return 0;
 545
 546                 intel_hdmi->force_audio = i;
 547
 548                 if (i == HDMI_AUDIO_AUTO)
 549                         has_audio = intel_hdmi_detect_audio(connector);
 550                 else
 551                         has_audio = (i == HDMI_AUDIO_ON);
 552
 553                 if (i == HDMI_AUDIO_OFF_DVI)
 554                         intel_hdmi->has_hdmi_sink = 0;
 555
 556                 intel_hdmi->has_audio = has_audio;
 557                 goto done;
 558         }
 559
 560         if (property == dev_priv->broadcast_rgb_property) {
 561                 if (val == !!intel_hdmi->color_range)
 562                         return 0;
 563
 564                 intel_hdmi->color_range = val ? SDVO_COLOR_RANGE_16_235 : 0;
 565                 goto done;
 566         }
 567
 568         return -EINVAL;
 569
 570 done:
 571         if (intel_hdmi->base.base.crtc) {
 572                 struct drm_crtc *crtc = intel_hdmi->base.base.crtc;
 573                 drm_crtc_helper_set_mode(crtc, &crtc->mode,
 574                                          crtc->x, crtc->y,
 575                                          crtc->fb);
 576         }
 577
 578         return 0;
 579 }
 580
 581 static void intel_hdmi_destroy(struct drm_connector *connector)
 582 {
 583         drm_sysfs_connector_remove(connector);
 584         drm_connector_cleanup(connector);
 585         kfree(connector);
 586 }
 587
 588 static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs_hsw = {
 589         .dpms = intel_ddi_dpms,
 590         .mode_fixup = intel_hdmi_mode_fixup,
 591         .prepare = intel_encoder_prepare,
 592         .mode_set = intel_ddi_mode_set,
 593         .commit = intel_encoder_commit,
 594 };
 595
 596 static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = {
 597         .dpms = intel_hdmi_dpms,
 598         .mode_fixup = intel_hdmi_mode_fixup,
 599         .prepare = intel_encoder_prepare,
 600         .mode_set = intel_hdmi_mode_set,
 601         .commit = intel_encoder_commit,
 602 };
 603
 604 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
 605         .dpms = drm_helper_connector_dpms,
 606         .detect = intel_hdmi_detect,
 607         .fill_modes = drm_helper_probe_single_connector_modes,
 608         .set_property = intel_hdmi_set_property,
 609         .destroy = intel_hdmi_destroy,
 610 };
 611
 612 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
 613         .get_modes = intel_hdmi_get_modes,
 614         .mode_valid = intel_hdmi_mode_valid,
 615         .best_encoder = intel_best_encoder,
 616 };
 617
 618 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
 619         .destroy = intel_encoder_destroy,
 620 };
 621
 622 static void
 623 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
 624 {
 625         intel_attach_force_audio_property(connector);
 626         intel_attach_broadcast_rgb_property(connector);
 627 }
 628
 629 void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
 630 {
 631         struct drm_i915_private *dev_priv = dev->dev_private;
 632         struct drm_connector *connector;
 633         struct intel_encoder *intel_encoder;
 634         struct intel_connector *intel_connector;
 635         struct intel_hdmi *intel_hdmi;
 636         int i;
 637
 638         intel_hdmi = kzalloc(sizeof(struct intel_hdmi), GFP_KERNEL);
 639         if (!intel_hdmi)
 640                 return;
 641
 642         intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
 643         if (!intel_connector) {
 644                 kfree(intel_hdmi);
 645                 return;
 646         }
 647
 648         intel_encoder = &intel_hdmi->base;
 649         drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
 650                          DRM_MODE_ENCODER_TMDS);
 651
 652         connector = &intel_connector->base;
 653         drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
 654                            DRM_MODE_CONNECTOR_HDMIA);
 655         drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
 656
 657         intel_encoder->type = INTEL_OUTPUT_HDMI;
 658
 659         connector->polled = DRM_CONNECTOR_POLL_HPD;
 660         connector->interlace_allowed = 1;
 661         connector->doublescan_allowed = 0;
 662         intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
 663
 664         /* Set up the DDC bus. */
 665         if (sdvox_reg == SDVOB) {
 666                 intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
 667                 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
 668                 dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
 669         } else if (sdvox_reg == SDVOC) {
 670                 intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
 671                 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
 672                 dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
 673         } else if (sdvox_reg == HDMIB) {
 674                 intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
 675                 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
 676                 dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
 677         } else if (sdvox_reg == HDMIC) {
 678                 intel_encoder->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT);
 679                 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
 680                 dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
 681         } else if (sdvox_reg == HDMID) {
 682                 intel_encoder->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
 683                 intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
 684                 dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
 685         } else if (sdvox_reg == DDI_BUF_CTL(PORT_B)) {
 686                 DRM_DEBUG_DRIVER("LPT: detected output on DDI B\n");
 687                 intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
 688                 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
 689                 intel_hdmi->ddi_port = PORT_B;
 690                 dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
 691         } else if (sdvox_reg == DDI_BUF_CTL(PORT_C)) {
 692                 DRM_DEBUG_DRIVER("LPT: detected output on DDI C\n");
 693                 intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
 694                 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
 695                 intel_hdmi->ddi_port = PORT_C;
 696                 dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
 697         } else if (sdvox_reg == DDI_BUF_CTL(PORT_D)) {
 698                 DRM_DEBUG_DRIVER("LPT: detected output on DDI D\n");
 699                 intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
 700                 intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
 701                 intel_hdmi->ddi_port = PORT_D;
 702                 dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
 703         } else {
 704                 /* If we got an unknown sdvox_reg, things are pretty much broken
 705                  * in a way that we should let the kernel know about it */
 706                 BUG();
 707         }
 708
 709         intel_hdmi->sdvox_reg = sdvox_reg;
 710
 711         if (!HAS_PCH_SPLIT(dev)) {
 712                 intel_hdmi->write_infoframe = g4x_write_infoframe;
 713                 I915_WRITE(VIDEO_DIP_CTL, 0);
 714         } else if (IS_VALLEYVIEW(dev)) {
 715                 intel_hdmi->write_infoframe = vlv_write_infoframe;
 716                 for_each_pipe(i)
 717                         I915_WRITE(VLV_TVIDEO_DIP_CTL(i), 0);
 718         } else if (IS_HASWELL(dev)) {
 719                 /* FIXME: Haswell has a new set of DIP frame registers, but we are
 720                  * just doing the minimal required for HDMI to work at this stage.
 721                  */
 722                 intel_hdmi->write_infoframe = hsw_write_infoframe;
 723                 for_each_pipe(i)
 724                         I915_WRITE(HSW_TVIDEO_DIP_CTL(i), 0);
 725         } else if (HAS_PCH_IBX(dev)) {
 726                 intel_hdmi->write_infoframe = ibx_write_infoframe;
 727                 for_each_pipe(i)
 728                         I915_WRITE(TVIDEO_DIP_CTL(i), 0);
 729         } else {
 730                 intel_hdmi->write_infoframe = cpt_write_infoframe;
 731                 for_each_pipe(i)
 732                         I915_WRITE(TVIDEO_DIP_CTL(i), 0);
 733         }
 734
 735         if (IS_HASWELL(dev))
 736                 drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs_hsw);
 737         else
 738                 drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs);
 739
 740         intel_hdmi_add_properties(intel_hdmi, connector);
 741
 742         intel_connector_attach_encoder(intel_connector, intel_encoder);
 743         drm_sysfs_connector_add(connector);
 744
 745         /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
 746          * 0xd.  Failure to do so will result in spurious interrupts being
 747          * generated on the port when a cable is not attached.
 748          */
 749         if (IS_G4X(dev) && !IS_GM45(dev)) {
 750                 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
 751                 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
 752         }
 753 }