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 <linux/hdmi.h>
  33 #include <drm/drmP.h>
  34 #include <drm/drm_atomic_helper.h>
  35 #include <drm/drm_crtc.h>
  36 #include <drm/drm_edid.h>
  37 #include "intel_drv.h"
  38 #include <drm/i915_drm.h>
  39 #include "i915_drv.h"
  40
  41 static struct drm_device *intel_hdmi_to_dev(struct intel_hdmi *intel_hdmi)
  42 {
  43         return hdmi_to_dig_port(intel_hdmi)->base.base.dev;
  44 }
  45
  46 static void
  47 assert_hdmi_port_disabled(struct intel_hdmi *intel_hdmi)
  48 {
  49         struct drm_device *dev = intel_hdmi_to_dev(intel_hdmi);
  50         struct drm_i915_private *dev_priv = dev->dev_private;
  51         uint32_t enabled_bits;
  52
  53         enabled_bits = HAS_DDI(dev) ? DDI_BUF_CTL_ENABLE : SDVO_ENABLE;
  54
  55         WARN(I915_READ(intel_hdmi->hdmi_reg) & enabled_bits,
  56              "HDMI port enabled, expecting disabled\n");
  57 }
  58
  59 struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
  60 {
  61         struct intel_digital_port *intel_dig_port =
  62                 container_of(encoder, struct intel_digital_port, base.base);
  63         return &intel_dig_port->hdmi;
  64 }
  65
  66 static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
  67 {
  68         return enc_to_intel_hdmi(&intel_attached_encoder(connector)->base);
  69 }
  70
  71 static u32 g4x_infoframe_index(enum hdmi_infoframe_type type)
  72 {
  73         switch (type) {
  74         case HDMI_INFOFRAME_TYPE_AVI:
  75                 return VIDEO_DIP_SELECT_AVI;
  76         case HDMI_INFOFRAME_TYPE_SPD:
  77                 return VIDEO_DIP_SELECT_SPD;
  78         case HDMI_INFOFRAME_TYPE_VENDOR:
  79                 return VIDEO_DIP_SELECT_VENDOR;
  80         default:
  81                 MISSING_CASE(type);
  82                 return 0;
  83         }
  84 }
  85
  86 static u32 g4x_infoframe_enable(enum hdmi_infoframe_type type)
  87 {
  88         switch (type) {
  89         case HDMI_INFOFRAME_TYPE_AVI:
  90                 return VIDEO_DIP_ENABLE_AVI;
  91         case HDMI_INFOFRAME_TYPE_SPD:
  92                 return VIDEO_DIP_ENABLE_SPD;
  93         case HDMI_INFOFRAME_TYPE_VENDOR:
  94                 return VIDEO_DIP_ENABLE_VENDOR;
  95         default:
  96                 MISSING_CASE(type);
  97                 return 0;
  98         }
  99 }
 100
 101 static u32 hsw_infoframe_enable(enum hdmi_infoframe_type type)
 102 {
 103         switch (type) {
 104         case HDMI_INFOFRAME_TYPE_AVI:
 105                 return VIDEO_DIP_ENABLE_AVI_HSW;
 106         case HDMI_INFOFRAME_TYPE_SPD:
 107                 return VIDEO_DIP_ENABLE_SPD_HSW;
 108         case HDMI_INFOFRAME_TYPE_VENDOR:
 109                 return VIDEO_DIP_ENABLE_VS_HSW;
 110         default:
 111                 MISSING_CASE(type);
 112                 return 0;
 113         }
 114 }
 115
 116 static i915_reg_t
 117 hsw_dip_data_reg(struct drm_i915_private *dev_priv,
 118                  enum transcoder cpu_transcoder,
 119                  enum hdmi_infoframe_type type,
 120                  int i)
 121 {
 122         switch (type) {
 123         case HDMI_INFOFRAME_TYPE_AVI:
 124                 return HSW_TVIDEO_DIP_AVI_DATA(cpu_transcoder, i);
 125         case HDMI_INFOFRAME_TYPE_SPD:
 126                 return HSW_TVIDEO_DIP_SPD_DATA(cpu_transcoder, i);
 127         case HDMI_INFOFRAME_TYPE_VENDOR:
 128                 return HSW_TVIDEO_DIP_VS_DATA(cpu_transcoder, i);
 129         default:
 130                 MISSING_CASE(type);
 131                 return INVALID_MMIO_REG;
 132         }
 133 }
 134
 135 static void g4x_write_infoframe(struct drm_encoder *encoder,
 136                                 enum hdmi_infoframe_type type,
 137                                 const void *frame, ssize_t len)
 138 {
 139         const uint32_t *data = frame;
 140         struct drm_device *dev = encoder->dev;
 141         struct drm_i915_private *dev_priv = dev->dev_private;
 142         u32 val = I915_READ(VIDEO_DIP_CTL);
 143         int i;
 144
 145         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 146
 147         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 148         val |= g4x_infoframe_index(type);
 149
 150         val &= ~g4x_infoframe_enable(type);
 151
 152         I915_WRITE(VIDEO_DIP_CTL, val);
 153
 154         mmiowb();
 155         for (i = 0; i < len; i += 4) {
 156                 I915_WRITE(VIDEO_DIP_DATA, *data);
 157                 data++;
 158         }
 159         /* Write every possible data byte to force correct ECC calculation. */
 160         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 161                 I915_WRITE(VIDEO_DIP_DATA, 0);
 162         mmiowb();
 163
 164         val |= g4x_infoframe_enable(type);
 165         val &= ~VIDEO_DIP_FREQ_MASK;
 166         val |= VIDEO_DIP_FREQ_VSYNC;
 167
 168         I915_WRITE(VIDEO_DIP_CTL, val);
 169         POSTING_READ(VIDEO_DIP_CTL);
 170 }
 171
 172 static bool g4x_infoframe_enabled(struct drm_encoder *encoder,
 173                                   const struct intel_crtc_state *pipe_config)
 174 {
 175         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 176         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 177         u32 val = I915_READ(VIDEO_DIP_CTL);
 178
 179         if ((val & VIDEO_DIP_ENABLE) == 0)
 180                 return false;
 181
 182         if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(intel_dig_port->port))
 183                 return false;
 184
 185         return val & (VIDEO_DIP_ENABLE_AVI |
 186                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
 187 }
 188
 189 static void ibx_write_infoframe(struct drm_encoder *encoder,
 190                                 enum hdmi_infoframe_type type,
 191                                 const void *frame, ssize_t len)
 192 {
 193         const uint32_t *data = frame;
 194         struct drm_device *dev = encoder->dev;
 195         struct drm_i915_private *dev_priv = dev->dev_private;
 196         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 197         i915_reg_t reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 198         u32 val = I915_READ(reg);
 199         int i;
 200
 201         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 202
 203         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 204         val |= g4x_infoframe_index(type);
 205
 206         val &= ~g4x_infoframe_enable(type);
 207
 208         I915_WRITE(reg, val);
 209
 210         mmiowb();
 211         for (i = 0; i < len; i += 4) {
 212                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 213                 data++;
 214         }
 215         /* Write every possible data byte to force correct ECC calculation. */
 216         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 217                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
 218         mmiowb();
 219
 220         val |= g4x_infoframe_enable(type);
 221         val &= ~VIDEO_DIP_FREQ_MASK;
 222         val |= VIDEO_DIP_FREQ_VSYNC;
 223
 224         I915_WRITE(reg, val);
 225         POSTING_READ(reg);
 226 }
 227
 228 static bool ibx_infoframe_enabled(struct drm_encoder *encoder,
 229                                   const struct intel_crtc_state *pipe_config)
 230 {
 231         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 232         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 233         enum pipe pipe = to_intel_crtc(pipe_config->base.crtc)->pipe;
 234         i915_reg_t reg = TVIDEO_DIP_CTL(pipe);
 235         u32 val = I915_READ(reg);
 236
 237         if ((val & VIDEO_DIP_ENABLE) == 0)
 238                 return false;
 239
 240         if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(intel_dig_port->port))
 241                 return false;
 242
 243         return val & (VIDEO_DIP_ENABLE_AVI |
 244                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 245                       VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 246 }
 247
 248 static void cpt_write_infoframe(struct drm_encoder *encoder,
 249                                 enum hdmi_infoframe_type type,
 250                                 const void *frame, ssize_t len)
 251 {
 252         const uint32_t *data = frame;
 253         struct drm_device *dev = encoder->dev;
 254         struct drm_i915_private *dev_priv = dev->dev_private;
 255         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 256         i915_reg_t reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 257         u32 val = I915_READ(reg);
 258         int i;
 259
 260         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 261
 262         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 263         val |= g4x_infoframe_index(type);
 264
 265         /* The DIP control register spec says that we need to update the AVI
 266          * infoframe without clearing its enable bit */
 267         if (type != HDMI_INFOFRAME_TYPE_AVI)
 268                 val &= ~g4x_infoframe_enable(type);
 269
 270         I915_WRITE(reg, val);
 271
 272         mmiowb();
 273         for (i = 0; i < len; i += 4) {
 274                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 275                 data++;
 276         }
 277         /* Write every possible data byte to force correct ECC calculation. */
 278         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 279                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
 280         mmiowb();
 281
 282         val |= g4x_infoframe_enable(type);
 283         val &= ~VIDEO_DIP_FREQ_MASK;
 284         val |= VIDEO_DIP_FREQ_VSYNC;
 285
 286         I915_WRITE(reg, val);
 287         POSTING_READ(reg);
 288 }
 289
 290 static bool cpt_infoframe_enabled(struct drm_encoder *encoder,
 291                                   const struct intel_crtc_state *pipe_config)
 292 {
 293         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 294         enum pipe pipe = to_intel_crtc(pipe_config->base.crtc)->pipe;
 295         u32 val = I915_READ(TVIDEO_DIP_CTL(pipe));
 296
 297         if ((val & VIDEO_DIP_ENABLE) == 0)
 298                 return false;
 299
 300         return val & (VIDEO_DIP_ENABLE_AVI |
 301                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 302                       VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 303 }
 304
 305 static void vlv_write_infoframe(struct drm_encoder *encoder,
 306                                 enum hdmi_infoframe_type type,
 307                                 const void *frame, ssize_t len)
 308 {
 309         const uint32_t *data = frame;
 310         struct drm_device *dev = encoder->dev;
 311         struct drm_i915_private *dev_priv = dev->dev_private;
 312         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 313         i915_reg_t reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
 314         u32 val = I915_READ(reg);
 315         int i;
 316
 317         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 318
 319         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 320         val |= g4x_infoframe_index(type);
 321
 322         val &= ~g4x_infoframe_enable(type);
 323
 324         I915_WRITE(reg, val);
 325
 326         mmiowb();
 327         for (i = 0; i < len; i += 4) {
 328                 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 329                 data++;
 330         }
 331         /* Write every possible data byte to force correct ECC calculation. */
 332         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 333                 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
 334         mmiowb();
 335
 336         val |= g4x_infoframe_enable(type);
 337         val &= ~VIDEO_DIP_FREQ_MASK;
 338         val |= VIDEO_DIP_FREQ_VSYNC;
 339
 340         I915_WRITE(reg, val);
 341         POSTING_READ(reg);
 342 }
 343
 344 static bool vlv_infoframe_enabled(struct drm_encoder *encoder,
 345                                   const struct intel_crtc_state *pipe_config)
 346 {
 347         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 348         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 349         enum pipe pipe = to_intel_crtc(pipe_config->base.crtc)->pipe;
 350         u32 val = I915_READ(VLV_TVIDEO_DIP_CTL(pipe));
 351
 352         if ((val & VIDEO_DIP_ENABLE) == 0)
 353                 return false;
 354
 355         if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(intel_dig_port->port))
 356                 return false;
 357
 358         return val & (VIDEO_DIP_ENABLE_AVI |
 359                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 360                       VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 361 }
 362
 363 static void hsw_write_infoframe(struct drm_encoder *encoder,
 364                                 enum hdmi_infoframe_type type,
 365                                 const void *frame, ssize_t len)
 366 {
 367         const uint32_t *data = frame;
 368         struct drm_device *dev = encoder->dev;
 369         struct drm_i915_private *dev_priv = dev->dev_private;
 370         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 371         enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
 372         i915_reg_t ctl_reg = HSW_TVIDEO_DIP_CTL(cpu_transcoder);
 373         i915_reg_t data_reg;
 374         int i;
 375         u32 val = I915_READ(ctl_reg);
 376
 377         data_reg = hsw_dip_data_reg(dev_priv, cpu_transcoder, type, 0);
 378
 379         val &= ~hsw_infoframe_enable(type);
 380         I915_WRITE(ctl_reg, val);
 381
 382         mmiowb();
 383         for (i = 0; i < len; i += 4) {
 384                 I915_WRITE(hsw_dip_data_reg(dev_priv, cpu_transcoder,
 385                                             type, i >> 2), *data);
 386                 data++;
 387         }
 388         /* Write every possible data byte to force correct ECC calculation. */
 389         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 390                 I915_WRITE(hsw_dip_data_reg(dev_priv, cpu_transcoder,
 391                                             type, i >> 2), 0);
 392         mmiowb();
 393
 394         val |= hsw_infoframe_enable(type);
 395         I915_WRITE(ctl_reg, val);
 396         POSTING_READ(ctl_reg);
 397 }
 398
 399 static bool hsw_infoframe_enabled(struct drm_encoder *encoder,
 400                                   const struct intel_crtc_state *pipe_config)
 401 {
 402         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 403         u32 val = I915_READ(HSW_TVIDEO_DIP_CTL(pipe_config->cpu_transcoder));
 404
 405         return val & (VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
 406                       VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
 407                       VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW);
 408 }
 409
 410 /*
 411  * The data we write to the DIP data buffer registers is 1 byte bigger than the
 412  * HDMI infoframe size because of an ECC/reserved byte at position 3 (starting
 413  * at 0). It's also a byte used by DisplayPort so the same DIP registers can be
 414  * used for both technologies.
 415  *
 416  * DW0: Reserved/ECC/DP | HB2 | HB1 | HB0
 417  * DW1:       DB3       | DB2 | DB1 | DB0
 418  * DW2:       DB7       | DB6 | DB5 | DB4
 419  * DW3: ...
 420  *
 421  * (HB is Header Byte, DB is Data Byte)
 422  *
 423  * The hdmi pack() functions don't know about that hardware specific hole so we
 424  * trick them by giving an offset into the buffer and moving back the header
 425  * bytes by one.
 426  */
 427 static void intel_write_infoframe(struct drm_encoder *encoder,
 428                                   union hdmi_infoframe *frame)
 429 {
 430         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 431         uint8_t buffer[VIDEO_DIP_DATA_SIZE];
 432         ssize_t len;
 433
 434         /* see comment above for the reason for this offset */
 435         len = hdmi_infoframe_pack(frame, buffer + 1, sizeof(buffer) - 1);
 436         if (len < 0)
 437                 return;
 438
 439         /* Insert the 'hole' (see big comment above) at position 3 */
 440         buffer[0] = buffer[1];
 441         buffer[1] = buffer[2];
 442         buffer[2] = buffer[3];
 443         buffer[3] = 0;
 444         len++;
 445
 446         intel_hdmi->write_infoframe(encoder, frame->any.type, buffer, len);
 447 }
 448
 449 static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
 450                                          const struct drm_display_mode *adjusted_mode)
 451 {
 452         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 453         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 454         union hdmi_infoframe frame;
 455         int ret;
 456
 457         ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
 458                                                        adjusted_mode);
 459         if (ret < 0) {
 460                 DRM_ERROR("couldn't fill AVI infoframe\n");
 461                 return;
 462         }
 463
 464         if (intel_hdmi->rgb_quant_range_selectable) {
 465                 if (intel_crtc->config->limited_color_range)
 466                         frame.avi.quantization_range =
 467                                 HDMI_QUANTIZATION_RANGE_LIMITED;
 468                 else
 469                         frame.avi.quantization_range =
 470                                 HDMI_QUANTIZATION_RANGE_FULL;
 471         }
 472
 473         intel_write_infoframe(encoder, &frame);
 474 }
 475
 476 static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
 477 {
 478         union hdmi_infoframe frame;
 479         int ret;
 480
 481         ret = hdmi_spd_infoframe_init(&frame.spd, "Intel", "Integrated gfx");
 482         if (ret < 0) {
 483                 DRM_ERROR("couldn't fill SPD infoframe\n");
 484                 return;
 485         }
 486
 487         frame.spd.sdi = HDMI_SPD_SDI_PC;
 488
 489         intel_write_infoframe(encoder, &frame);
 490 }
 491
 492 static void
 493 intel_hdmi_set_hdmi_infoframe(struct drm_encoder *encoder,
 494                               const struct drm_display_mode *adjusted_mode)
 495 {
 496         union hdmi_infoframe frame;
 497         int ret;
 498
 499         ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
 500                                                           adjusted_mode);
 501         if (ret < 0)
 502                 return;
 503
 504         intel_write_infoframe(encoder, &frame);
 505 }
 506
 507 static void g4x_set_infoframes(struct drm_encoder *encoder,
 508                                bool enable,
 509                                const struct drm_display_mode *adjusted_mode)
 510 {
 511         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 512         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 513         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
 514         i915_reg_t reg = VIDEO_DIP_CTL;
 515         u32 val = I915_READ(reg);
 516         u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
 517
 518         assert_hdmi_port_disabled(intel_hdmi);
 519
 520         /* If the registers were not initialized yet, they might be zeroes,
 521          * which means we're selecting the AVI DIP and we're setting its
 522          * frequency to once. This seems to really confuse the HW and make
 523          * things stop working (the register spec says the AVI always needs to
 524          * be sent every VSync). So here we avoid writing to the register more
 525          * than we need and also explicitly select the AVI DIP and explicitly
 526          * set its frequency to every VSync. Avoiding to write it twice seems to
 527          * be enough to solve the problem, but being defensive shouldn't hurt us
 528          * either. */
 529         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 530
 531         if (!enable) {
 532                 if (!(val & VIDEO_DIP_ENABLE))
 533                         return;
 534                 if (port != (val & VIDEO_DIP_PORT_MASK)) {
 535                         DRM_DEBUG_KMS("video DIP still enabled on port %c\n",
 536                                       (val & VIDEO_DIP_PORT_MASK) >> 29);
 537                         return;
 538                 }
 539                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 540                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
 541                 I915_WRITE(reg, val);
 542                 POSTING_READ(reg);
 543                 return;
 544         }
 545
 546         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 547                 if (val & VIDEO_DIP_ENABLE) {
 548                         DRM_DEBUG_KMS("video DIP already enabled on port %c\n",
 549                                       (val & VIDEO_DIP_PORT_MASK) >> 29);
 550                         return;
 551                 }
 552                 val &= ~VIDEO_DIP_PORT_MASK;
 553                 val |= port;
 554         }
 555
 556         val |= VIDEO_DIP_ENABLE;
 557         val &= ~(VIDEO_DIP_ENABLE_AVI |
 558                  VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
 559
 560         I915_WRITE(reg, val);
 561         POSTING_READ(reg);
 562
 563         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 564         intel_hdmi_set_spd_infoframe(encoder);
 565         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 566 }
 567
 568 static bool hdmi_sink_is_deep_color(struct drm_encoder *encoder)
 569 {
 570         struct drm_device *dev = encoder->dev;
 571         struct drm_connector *connector;
 572
 573         WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
 574
 575         /*
 576          * HDMI cloning is only supported on g4x which doesn't
 577          * support deep color or GCP infoframes anyway so no
 578          * need to worry about multiple HDMI sinks here.
 579          */
 580         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 581                 if (connector->encoder == encoder)
 582                         return connector->display_info.bpc > 8;
 583
 584         return false;
 585 }
 586
 587 /*
 588  * Determine if default_phase=1 can be indicated in the GCP infoframe.
 589  *
 590  * From HDMI specification 1.4a:
 591  * - The first pixel of each Video Data Period shall always have a pixel packing phase of 0
 592  * - The first pixel following each Video Data Period shall have a pixel packing phase of 0
 593  * - The PP bits shall be constant for all GCPs and will be equal to the last packing phase
 594  * - The first pixel following every transition of HSYNC or VSYNC shall have a pixel packing
 595  *   phase of 0
 596  */
 597 static bool gcp_default_phase_possible(int pipe_bpp,
 598                                        const struct drm_display_mode *mode)
 599 {
 600         unsigned int pixels_per_group;
 601
 602         switch (pipe_bpp) {
 603         case 30:
 604                 /* 4 pixels in 5 clocks */
 605                 pixels_per_group = 4;
 606                 break;
 607         case 36:
 608                 /* 2 pixels in 3 clocks */
 609                 pixels_per_group = 2;
 610                 break;
 611         case 48:
 612                 /* 1 pixel in 2 clocks */
 613                 pixels_per_group = 1;
 614                 break;
 615         default:
 616                 /* phase information not relevant for 8bpc */
 617                 return false;
 618         }
 619
 620         return mode->crtc_hdisplay % pixels_per_group == 0 &&
 621                 mode->crtc_htotal % pixels_per_group == 0 &&
 622                 mode->crtc_hblank_start % pixels_per_group == 0 &&
 623                 mode->crtc_hblank_end % pixels_per_group == 0 &&
 624                 mode->crtc_hsync_start % pixels_per_group == 0 &&
 625                 mode->crtc_hsync_end % pixels_per_group == 0 &&
 626                 ((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0 ||
 627                  mode->crtc_htotal/2 % pixels_per_group == 0);
 628 }
 629
 630 static bool intel_hdmi_set_gcp_infoframe(struct drm_encoder *encoder)
 631 {
 632         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 633         struct intel_crtc *crtc = to_intel_crtc(encoder->crtc);
 634         i915_reg_t reg;
 635         u32 val = 0;
 636
 637         if (HAS_DDI(dev_priv))
 638                 reg = HSW_TVIDEO_DIP_GCP(crtc->config->cpu_transcoder);
 639         else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 640                 reg = VLV_TVIDEO_DIP_GCP(crtc->pipe);
 641         else if (HAS_PCH_SPLIT(dev_priv->dev))
 642                 reg = TVIDEO_DIP_GCP(crtc->pipe);
 643         else
 644                 return false;
 645
 646         /* Indicate color depth whenever the sink supports deep color */
 647         if (hdmi_sink_is_deep_color(encoder))
 648                 val |= GCP_COLOR_INDICATION;
 649
 650         /* Enable default_phase whenever the display mode is suitably aligned */
 651         if (gcp_default_phase_possible(crtc->config->pipe_bpp,
 652                                        &crtc->config->base.adjusted_mode))
 653                 val |= GCP_DEFAULT_PHASE_ENABLE;
 654
 655         I915_WRITE(reg, val);
 656
 657         return val != 0;
 658 }
 659
 660 static void ibx_set_infoframes(struct drm_encoder *encoder,
 661                                bool enable,
 662                                const struct drm_display_mode *adjusted_mode)
 663 {
 664         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 665         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 666         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 667         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
 668         i915_reg_t reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 669         u32 val = I915_READ(reg);
 670         u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
 671
 672         assert_hdmi_port_disabled(intel_hdmi);
 673
 674         /* See the big comment in g4x_set_infoframes() */
 675         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 676
 677         if (!enable) {
 678                 if (!(val & VIDEO_DIP_ENABLE))
 679                         return;
 680                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 681                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 682                          VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 683                 I915_WRITE(reg, val);
 684                 POSTING_READ(reg);
 685                 return;
 686         }
 687
 688         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 689                 WARN(val & VIDEO_DIP_ENABLE,
 690                      "DIP already enabled on port %c\n",
 691                      (val & VIDEO_DIP_PORT_MASK) >> 29);
 692                 val &= ~VIDEO_DIP_PORT_MASK;
 693                 val |= port;
 694         }
 695
 696         val |= VIDEO_DIP_ENABLE;
 697         val &= ~(VIDEO_DIP_ENABLE_AVI |
 698                  VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 699                  VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 700
 701         if (intel_hdmi_set_gcp_infoframe(encoder))
 702                 val |= VIDEO_DIP_ENABLE_GCP;
 703
 704         I915_WRITE(reg, val);
 705         POSTING_READ(reg);
 706
 707         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 708         intel_hdmi_set_spd_infoframe(encoder);
 709         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 710 }
 711
 712 static void cpt_set_infoframes(struct drm_encoder *encoder,
 713                                bool enable,
 714                                const struct drm_display_mode *adjusted_mode)
 715 {
 716         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 717         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 718         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 719         i915_reg_t reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 720         u32 val = I915_READ(reg);
 721
 722         assert_hdmi_port_disabled(intel_hdmi);
 723
 724         /* See the big comment in g4x_set_infoframes() */
 725         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 726
 727         if (!enable) {
 728                 if (!(val & VIDEO_DIP_ENABLE))
 729                         return;
 730                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 731                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 732                          VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 733                 I915_WRITE(reg, val);
 734                 POSTING_READ(reg);
 735                 return;
 736         }
 737
 738         /* Set both together, unset both together: see the spec. */
 739         val |= VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI;
 740         val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 741                  VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 742
 743         if (intel_hdmi_set_gcp_infoframe(encoder))
 744                 val |= VIDEO_DIP_ENABLE_GCP;
 745
 746         I915_WRITE(reg, val);
 747         POSTING_READ(reg);
 748
 749         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 750         intel_hdmi_set_spd_infoframe(encoder);
 751         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 752 }
 753
 754 static void vlv_set_infoframes(struct drm_encoder *encoder,
 755                                bool enable,
 756                                const struct drm_display_mode *adjusted_mode)
 757 {
 758         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 759         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 760         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 761         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 762         i915_reg_t reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
 763         u32 val = I915_READ(reg);
 764         u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
 765
 766         assert_hdmi_port_disabled(intel_hdmi);
 767
 768         /* See the big comment in g4x_set_infoframes() */
 769         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 770
 771         if (!enable) {
 772                 if (!(val & VIDEO_DIP_ENABLE))
 773                         return;
 774                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 775                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 776                          VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 777                 I915_WRITE(reg, val);
 778                 POSTING_READ(reg);
 779                 return;
 780         }
 781
 782         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 783                 WARN(val & VIDEO_DIP_ENABLE,
 784                      "DIP already enabled on port %c\n",
 785                      (val & VIDEO_DIP_PORT_MASK) >> 29);
 786                 val &= ~VIDEO_DIP_PORT_MASK;
 787                 val |= port;
 788         }
 789
 790         val |= VIDEO_DIP_ENABLE;
 791         val &= ~(VIDEO_DIP_ENABLE_AVI |
 792                  VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 793                  VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 794
 795         if (intel_hdmi_set_gcp_infoframe(encoder))
 796                 val |= VIDEO_DIP_ENABLE_GCP;
 797
 798         I915_WRITE(reg, val);
 799         POSTING_READ(reg);
 800
 801         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 802         intel_hdmi_set_spd_infoframe(encoder);
 803         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 804 }
 805
 806 static void hsw_set_infoframes(struct drm_encoder *encoder,
 807                                bool enable,
 808                                const struct drm_display_mode *adjusted_mode)
 809 {
 810         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 811         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 812         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 813         i915_reg_t reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config->cpu_transcoder);
 814         u32 val = I915_READ(reg);
 815
 816         assert_hdmi_port_disabled(intel_hdmi);
 817
 818         val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
 819                  VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
 820                  VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW);
 821
 822         if (!enable) {
 823                 I915_WRITE(reg, val);
 824                 POSTING_READ(reg);
 825                 return;
 826         }
 827
 828         if (intel_hdmi_set_gcp_infoframe(encoder))
 829                 val |= VIDEO_DIP_ENABLE_GCP_HSW;
 830
 831         I915_WRITE(reg, val);
 832         POSTING_READ(reg);
 833
 834         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 835         intel_hdmi_set_spd_infoframe(encoder);
 836         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 837 }
 838
 839 static void intel_hdmi_prepare(struct intel_encoder *encoder)
 840 {
 841         struct drm_device *dev = encoder->base.dev;
 842         struct drm_i915_private *dev_priv = dev->dev_private;
 843         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 844         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 845         const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
 846         u32 hdmi_val;
 847
 848         hdmi_val = SDVO_ENCODING_HDMI;
 849         if (!HAS_PCH_SPLIT(dev) && crtc->config->limited_color_range)
 850                 hdmi_val |= HDMI_COLOR_RANGE_16_235;
 851         if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
 852                 hdmi_val |= SDVO_VSYNC_ACTIVE_HIGH;
 853         if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
 854                 hdmi_val |= SDVO_HSYNC_ACTIVE_HIGH;
 855
 856         if (crtc->config->pipe_bpp > 24)
 857                 hdmi_val |= HDMI_COLOR_FORMAT_12bpc;
 858         else
 859                 hdmi_val |= SDVO_COLOR_FORMAT_8bpc;
 860
 861         if (crtc->config->has_hdmi_sink)
 862                 hdmi_val |= HDMI_MODE_SELECT_HDMI;
 863
 864         if (HAS_PCH_CPT(dev))
 865                 hdmi_val |= SDVO_PIPE_SEL_CPT(crtc->pipe);
 866         else if (IS_CHERRYVIEW(dev))
 867                 hdmi_val |= SDVO_PIPE_SEL_CHV(crtc->pipe);
 868         else
 869                 hdmi_val |= SDVO_PIPE_SEL(crtc->pipe);
 870
 871         I915_WRITE(intel_hdmi->hdmi_reg, hdmi_val);
 872         POSTING_READ(intel_hdmi->hdmi_reg);
 873 }
 874
 875 static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
 876                                     enum pipe *pipe)
 877 {
 878         struct drm_device *dev = encoder->base.dev;
 879         struct drm_i915_private *dev_priv = dev->dev_private;
 880         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 881         enum intel_display_power_domain power_domain;
 882         u32 tmp;
 883
 884         power_domain = intel_display_port_power_domain(encoder);
 885         if (!intel_display_power_is_enabled(dev_priv, power_domain))
 886                 return false;
 887
 888         tmp = I915_READ(intel_hdmi->hdmi_reg);
 889
 890         if (!(tmp & SDVO_ENABLE))
 891                 return false;
 892
 893         if (HAS_PCH_CPT(dev))
 894                 *pipe = PORT_TO_PIPE_CPT(tmp);
 895         else if (IS_CHERRYVIEW(dev))
 896                 *pipe = SDVO_PORT_TO_PIPE_CHV(tmp);
 897         else
 898                 *pipe = PORT_TO_PIPE(tmp);
 899
 900         return true;
 901 }
 902
 903 static void intel_hdmi_get_config(struct intel_encoder *encoder,
 904                                   struct intel_crtc_state *pipe_config)
 905 {
 906         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 907         struct drm_device *dev = encoder->base.dev;
 908         struct drm_i915_private *dev_priv = dev->dev_private;
 909         u32 tmp, flags = 0;
 910         int dotclock;
 911
 912         tmp = I915_READ(intel_hdmi->hdmi_reg);
 913
 914         if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
 915                 flags |= DRM_MODE_FLAG_PHSYNC;
 916         else
 917                 flags |= DRM_MODE_FLAG_NHSYNC;
 918
 919         if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
 920                 flags |= DRM_MODE_FLAG_PVSYNC;
 921         else
 922                 flags |= DRM_MODE_FLAG_NVSYNC;
 923
 924         if (tmp & HDMI_MODE_SELECT_HDMI)
 925                 pipe_config->has_hdmi_sink = true;
 926
 927         if (intel_hdmi->infoframe_enabled(&encoder->base, pipe_config))
 928                 pipe_config->has_infoframe = true;
 929
 930         if (tmp & SDVO_AUDIO_ENABLE)
 931                 pipe_config->has_audio = true;
 932
 933         if (!HAS_PCH_SPLIT(dev) &&
 934             tmp & HDMI_COLOR_RANGE_16_235)
 935                 pipe_config->limited_color_range = true;
 936
 937         pipe_config->base.adjusted_mode.flags |= flags;
 938
 939         if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
 940                 dotclock = pipe_config->port_clock * 2 / 3;
 941         else
 942                 dotclock = pipe_config->port_clock;
 943
 944         if (pipe_config->pixel_multiplier)
 945                 dotclock /= pipe_config->pixel_multiplier;
 946
 947         if (HAS_PCH_SPLIT(dev_priv->dev))
 948                 ironlake_check_encoder_dotclock(pipe_config, dotclock);
 949
 950         pipe_config->base.adjusted_mode.crtc_clock = dotclock;
 951 }
 952
 953 static void intel_enable_hdmi_audio(struct intel_encoder *encoder)
 954 {
 955         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 956
 957         WARN_ON(!crtc->config->has_hdmi_sink);
 958         DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
 959                          pipe_name(crtc->pipe));
 960         intel_audio_codec_enable(encoder);
 961 }
 962
 963 static void g4x_enable_hdmi(struct intel_encoder *encoder)
 964 {
 965         struct drm_device *dev = encoder->base.dev;
 966         struct drm_i915_private *dev_priv = dev->dev_private;
 967         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 968         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 969         u32 temp;
 970
 971         temp = I915_READ(intel_hdmi->hdmi_reg);
 972
 973         temp |= SDVO_ENABLE;
 974         if (crtc->config->has_audio)
 975                 temp |= SDVO_AUDIO_ENABLE;
 976
 977         I915_WRITE(intel_hdmi->hdmi_reg, temp);
 978         POSTING_READ(intel_hdmi->hdmi_reg);
 979
 980         if (crtc->config->has_audio)
 981                 intel_enable_hdmi_audio(encoder);
 982 }
 983
 984 static void ibx_enable_hdmi(struct intel_encoder *encoder)
 985 {
 986         struct drm_device *dev = encoder->base.dev;
 987         struct drm_i915_private *dev_priv = dev->dev_private;
 988         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 989         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 990         u32 temp;
 991
 992         temp = I915_READ(intel_hdmi->hdmi_reg);
 993
 994         temp |= SDVO_ENABLE;
 995         if (crtc->config->has_audio)
 996                 temp |= SDVO_AUDIO_ENABLE;
 997
 998         /*
 999          * HW workaround, need to write this twice for issue
1000          * that may result in first write getting masked.
1001          */
1002         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1003         POSTING_READ(intel_hdmi->hdmi_reg);
1004         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1005         POSTING_READ(intel_hdmi->hdmi_reg);
1006
1007         /*
1008          * HW workaround, need to toggle enable bit off and on
1009          * for 12bpc with pixel repeat.
1010          *
1011          * FIXME: BSpec says this should be done at the end of
1012          * of the modeset sequence, so not sure if this isn't too soon.
1013          */
1014         if (crtc->config->pipe_bpp > 24 &&
1015             crtc->config->pixel_multiplier > 1) {
1016                 I915_WRITE(intel_hdmi->hdmi_reg, temp & ~SDVO_ENABLE);
1017                 POSTING_READ(intel_hdmi->hdmi_reg);
1018
1019                 /*
1020                  * HW workaround, need to write this twice for issue
1021                  * that may result in first write getting masked.
1022                  */
1023                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1024                 POSTING_READ(intel_hdmi->hdmi_reg);
1025                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1026                 POSTING_READ(intel_hdmi->hdmi_reg);
1027         }
1028
1029         if (crtc->config->has_audio)
1030                 intel_enable_hdmi_audio(encoder);
1031 }
1032
1033 static void cpt_enable_hdmi(struct intel_encoder *encoder)
1034 {
1035         struct drm_device *dev = encoder->base.dev;
1036         struct drm_i915_private *dev_priv = dev->dev_private;
1037         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1038         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1039         enum pipe pipe = crtc->pipe;
1040         u32 temp;
1041
1042         temp = I915_READ(intel_hdmi->hdmi_reg);
1043
1044         temp |= SDVO_ENABLE;
1045         if (crtc->config->has_audio)
1046                 temp |= SDVO_AUDIO_ENABLE;
1047
1048         /*
1049          * WaEnableHDMI8bpcBefore12bpc:snb,ivb
1050          *
1051          * The procedure for 12bpc is as follows:
1052          * 1. disable HDMI clock gating
1053          * 2. enable HDMI with 8bpc
1054          * 3. enable HDMI with 12bpc
1055          * 4. enable HDMI clock gating
1056          */
1057
1058         if (crtc->config->pipe_bpp > 24) {
1059                 I915_WRITE(TRANS_CHICKEN1(pipe),
1060                            I915_READ(TRANS_CHICKEN1(pipe)) |
1061                            TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
1062
1063                 temp &= ~SDVO_COLOR_FORMAT_MASK;
1064                 temp |= SDVO_COLOR_FORMAT_8bpc;
1065         }
1066
1067         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1068         POSTING_READ(intel_hdmi->hdmi_reg);
1069
1070         if (crtc->config->pipe_bpp > 24) {
1071                 temp &= ~SDVO_COLOR_FORMAT_MASK;
1072                 temp |= HDMI_COLOR_FORMAT_12bpc;
1073
1074                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1075                 POSTING_READ(intel_hdmi->hdmi_reg);
1076
1077                 I915_WRITE(TRANS_CHICKEN1(pipe),
1078                            I915_READ(TRANS_CHICKEN1(pipe)) &
1079                            ~TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
1080         }
1081
1082         if (crtc->config->has_audio)
1083                 intel_enable_hdmi_audio(encoder);
1084 }
1085
1086 static void vlv_enable_hdmi(struct intel_encoder *encoder)
1087 {
1088 }
1089
1090 static void intel_disable_hdmi(struct intel_encoder *encoder)
1091 {
1092         struct drm_device *dev = encoder->base.dev;
1093         struct drm_i915_private *dev_priv = dev->dev_private;
1094         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1095         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1096         u32 temp;
1097
1098         temp = I915_READ(intel_hdmi->hdmi_reg);
1099
1100         temp &= ~(SDVO_ENABLE | SDVO_AUDIO_ENABLE);
1101         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1102         POSTING_READ(intel_hdmi->hdmi_reg);
1103
1104         /*
1105          * HW workaround for IBX, we need to move the port
1106          * to transcoder A after disabling it to allow the
1107          * matching DP port to be enabled on transcoder A.
1108          */
1109         if (HAS_PCH_IBX(dev) && crtc->pipe == PIPE_B) {
1110                 /*
1111                  * We get CPU/PCH FIFO underruns on the other pipe when
1112                  * doing the workaround. Sweep them under the rug.
1113                  */
1114                 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
1115                 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
1116
1117                 temp &= ~SDVO_PIPE_B_SELECT;
1118                 temp |= SDVO_ENABLE;
1119                 /*
1120                  * HW workaround, need to write this twice for issue
1121                  * that may result in first write getting masked.
1122                  */
1123                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1124                 POSTING_READ(intel_hdmi->hdmi_reg);
1125                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1126                 POSTING_READ(intel_hdmi->hdmi_reg);
1127
1128                 temp &= ~SDVO_ENABLE;
1129                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1130                 POSTING_READ(intel_hdmi->hdmi_reg);
1131
1132                 intel_wait_for_vblank_if_active(dev_priv->dev, PIPE_A);
1133                 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
1134                 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
1135         }
1136
1137         intel_hdmi->set_infoframes(&encoder->base, false, NULL);
1138 }
1139
1140 static void g4x_disable_hdmi(struct intel_encoder *encoder)
1141 {
1142         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1143
1144         if (crtc->config->has_audio)
1145                 intel_audio_codec_disable(encoder);
1146
1147         intel_disable_hdmi(encoder);
1148 }
1149
1150 static void pch_disable_hdmi(struct intel_encoder *encoder)
1151 {
1152         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1153
1154         if (crtc->config->has_audio)
1155                 intel_audio_codec_disable(encoder);
1156 }
1157
1158 static void pch_post_disable_hdmi(struct intel_encoder *encoder)
1159 {
1160         intel_disable_hdmi(encoder);
1161 }
1162
1163 static int hdmi_port_clock_limit(struct intel_hdmi *hdmi, bool respect_dvi_limit)
1164 {
1165         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1166
1167         if ((respect_dvi_limit && !hdmi->has_hdmi_sink) || IS_G4X(dev))
1168                 return 165000;
1169         else if (IS_HASWELL(dev) || INTEL_INFO(dev)->gen >= 8)
1170                 return 300000;
1171         else
1172                 return 225000;
1173 }
1174
1175 static enum drm_mode_status
1176 hdmi_port_clock_valid(struct intel_hdmi *hdmi,
1177                       int clock, bool respect_dvi_limit)
1178 {
1179         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1180
1181         if (clock < 25000)
1182                 return MODE_CLOCK_LOW;
1183         if (clock > hdmi_port_clock_limit(hdmi, respect_dvi_limit))
1184                 return MODE_CLOCK_HIGH;
1185
1186         /* BXT DPLL can't generate 223-240 MHz */
1187         if (IS_BROXTON(dev) && clock > 223333 && clock < 240000)
1188                 return MODE_CLOCK_RANGE;
1189
1190         /* CHV DPLL can't generate 216-240 MHz */
1191         if (IS_CHERRYVIEW(dev) && clock > 216000 && clock < 240000)
1192                 return MODE_CLOCK_RANGE;
1193
1194         return MODE_OK;
1195 }
1196
1197 static enum drm_mode_status
1198 intel_hdmi_mode_valid(struct drm_connector *connector,
1199                       struct drm_display_mode *mode)
1200 {
1201         struct intel_hdmi *hdmi = intel_attached_hdmi(connector);
1202         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1203         enum drm_mode_status status;
1204         int clock;
1205
1206         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
1207                 return MODE_NO_DBLESCAN;
1208
1209         clock = mode->clock;
1210         if (mode->flags & DRM_MODE_FLAG_DBLCLK)
1211                 clock *= 2;
1212
1213         /* check if we can do 8bpc */
1214         status = hdmi_port_clock_valid(hdmi, clock, true);
1215
1216         /* if we can't do 8bpc we may still be able to do 12bpc */
1217         if (!HAS_GMCH_DISPLAY(dev) && status != MODE_OK)
1218                 status = hdmi_port_clock_valid(hdmi, clock * 3 / 2, true);
1219
1220         return status;
1221 }
1222
1223 static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state)
1224 {
1225         struct drm_device *dev = crtc_state->base.crtc->dev;
1226         struct drm_atomic_state *state;
1227         struct intel_encoder *encoder;
1228         struct drm_connector *connector;
1229         struct drm_connector_state *connector_state;
1230         int count = 0, count_hdmi = 0;
1231         int i;
1232
1233         if (HAS_GMCH_DISPLAY(dev))
1234                 return false;
1235
1236         state = crtc_state->base.state;
1237
1238         for_each_connector_in_state(state, connector, connector_state, i) {
1239                 if (connector_state->crtc != crtc_state->base.crtc)
1240                         continue;
1241
1242                 encoder = to_intel_encoder(connector_state->best_encoder);
1243
1244                 count_hdmi += encoder->type == INTEL_OUTPUT_HDMI;
1245                 count++;
1246         }
1247
1248         /*
1249          * HDMI 12bpc affects the clocks, so it's only possible
1250          * when not cloning with other encoder types.
1251          */
1252         return count_hdmi > 0 && count_hdmi == count;
1253 }
1254
1255 bool intel_hdmi_compute_config(struct intel_encoder *encoder,
1256                                struct intel_crtc_state *pipe_config)
1257 {
1258         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1259         struct drm_device *dev = encoder->base.dev;
1260         struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
1261         int clock_8bpc = pipe_config->base.adjusted_mode.crtc_clock;
1262         int clock_12bpc = clock_8bpc * 3 / 2;
1263         int desired_bpp;
1264
1265         pipe_config->has_hdmi_sink = intel_hdmi->has_hdmi_sink;
1266
1267         if (pipe_config->has_hdmi_sink)
1268                 pipe_config->has_infoframe = true;
1269
1270         if (intel_hdmi->color_range_auto) {
1271                 /* See CEA-861-E - 5.1 Default Encoding Parameters */
1272                 pipe_config->limited_color_range =
1273                         pipe_config->has_hdmi_sink &&
1274                         drm_match_cea_mode(adjusted_mode) > 1;
1275         } else {
1276                 pipe_config->limited_color_range =
1277                         intel_hdmi->limited_color_range;
1278         }
1279
1280         if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) {
1281                 pipe_config->pixel_multiplier = 2;
1282                 clock_8bpc *= 2;
1283                 clock_12bpc *= 2;
1284         }
1285
1286         if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev))
1287                 pipe_config->has_pch_encoder = true;
1288
1289         if (pipe_config->has_hdmi_sink && intel_hdmi->has_audio)
1290                 pipe_config->has_audio = true;
1291
1292         /*
1293          * HDMI is either 12 or 8, so if the display lets 10bpc sneak
1294          * through, clamp it down. Note that g4x/vlv don't support 12bpc hdmi
1295          * outputs. We also need to check that the higher clock still fits
1296          * within limits.
1297          */
1298         if (pipe_config->pipe_bpp > 8*3 && pipe_config->has_hdmi_sink &&
1299             hdmi_port_clock_valid(intel_hdmi, clock_12bpc, false) == MODE_OK &&
1300             hdmi_12bpc_possible(pipe_config)) {
1301                 DRM_DEBUG_KMS("picking bpc to 12 for HDMI output\n");
1302                 desired_bpp = 12*3;
1303
1304                 /* Need to adjust the port link by 1.5x for 12bpc. */
1305                 pipe_config->port_clock = clock_12bpc;
1306         } else {
1307                 DRM_DEBUG_KMS("picking bpc to 8 for HDMI output\n");
1308                 desired_bpp = 8*3;
1309
1310                 pipe_config->port_clock = clock_8bpc;
1311         }
1312
1313         if (!pipe_config->bw_constrained) {
1314                 DRM_DEBUG_KMS("forcing pipe bpc to %i for HDMI\n", desired_bpp);
1315                 pipe_config->pipe_bpp = desired_bpp;
1316         }
1317
1318         if (hdmi_port_clock_valid(intel_hdmi, pipe_config->port_clock,
1319                                   false) != MODE_OK) {
1320                 DRM_DEBUG_KMS("unsupported HDMI clock, rejecting mode\n");
1321                 return false;
1322         }
1323
1324         /* Set user selected PAR to incoming mode's member */
1325         adjusted_mode->picture_aspect_ratio = intel_hdmi->aspect_ratio;
1326
1327         return true;
1328 }
1329
1330 static void
1331 intel_hdmi_unset_edid(struct drm_connector *connector)
1332 {
1333         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1334
1335         intel_hdmi->has_hdmi_sink = false;
1336         intel_hdmi->has_audio = false;
1337         intel_hdmi->rgb_quant_range_selectable = false;
1338
1339         kfree(to_intel_connector(connector)->detect_edid);
1340         to_intel_connector(connector)->detect_edid = NULL;
1341 }
1342
1343 static bool
1344 intel_hdmi_set_edid(struct drm_connector *connector, bool force)
1345 {
1346         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1347         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1348         struct edid *edid = NULL;
1349         bool connected = false;
1350
1351         if (force) {
1352                 intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
1353
1354                 edid = drm_get_edid(connector,
1355                                     intel_gmbus_get_adapter(dev_priv,
1356                                     intel_hdmi->ddc_bus));
1357
1358                 intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
1359         }
1360
1361         to_intel_connector(connector)->detect_edid = edid;
1362         if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
1363                 intel_hdmi->rgb_quant_range_selectable =
1364                         drm_rgb_quant_range_selectable(edid);
1365
1366                 intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
1367                 if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
1368                         intel_hdmi->has_audio =
1369                                 intel_hdmi->force_audio == HDMI_AUDIO_ON;
1370
1371                 if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
1372                         intel_hdmi->has_hdmi_sink =
1373                                 drm_detect_hdmi_monitor(edid);
1374
1375                 connected = true;
1376         }
1377
1378         return connected;
1379 }
1380
1381 static enum drm_connector_status
1382 intel_hdmi_detect(struct drm_connector *connector, bool force)
1383 {
1384         enum drm_connector_status status;
1385         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1386         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1387         bool live_status = false;
1388         unsigned int try;
1389
1390         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1391                       connector->base.id, connector->name);
1392
1393         intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
1394
1395         for (try = 0; !live_status && try < 9; try++) {
1396                 if (try)
1397                         msleep(10);
1398                 live_status = intel_digital_port_connected(dev_priv,
1399                                 hdmi_to_dig_port(intel_hdmi));
1400         }
1401
1402         if (!live_status)
1403                 DRM_DEBUG_KMS("Live status not up!");
1404
1405         intel_hdmi_unset_edid(connector);
1406
1407         if (intel_hdmi_set_edid(connector, live_status)) {
1408                 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1409
1410                 hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
1411                 status = connector_status_connected;
1412         } else
1413                 status = connector_status_disconnected;
1414
1415         intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
1416
1417         return status;
1418 }
1419
1420 static void
1421 intel_hdmi_force(struct drm_connector *connector)
1422 {
1423         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1424
1425         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1426                       connector->base.id, connector->name);
1427
1428         intel_hdmi_unset_edid(connector);
1429
1430         if (connector->status != connector_status_connected)
1431                 return;
1432
1433         intel_hdmi_set_edid(connector, true);
1434         hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
1435 }
1436
1437 static int intel_hdmi_get_modes(struct drm_connector *connector)
1438 {
1439         struct edid *edid;
1440
1441         edid = to_intel_connector(connector)->detect_edid;
1442         if (edid == NULL)
1443                 return 0;
1444
1445         return intel_connector_update_modes(connector, edid);
1446 }
1447
1448 static bool
1449 intel_hdmi_detect_audio(struct drm_connector *connector)
1450 {
1451         bool has_audio = false;
1452         struct edid *edid;
1453
1454         edid = to_intel_connector(connector)->detect_edid;
1455         if (edid && edid->input & DRM_EDID_INPUT_DIGITAL)
1456                 has_audio = drm_detect_monitor_audio(edid);
1457
1458         return has_audio;
1459 }
1460
1461 static int
1462 intel_hdmi_set_property(struct drm_connector *connector,
1463                         struct drm_property *property,
1464                         uint64_t val)
1465 {
1466         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1467         struct intel_digital_port *intel_dig_port =
1468                 hdmi_to_dig_port(intel_hdmi);
1469         struct drm_i915_private *dev_priv = connector->dev->dev_private;
1470         int ret;
1471
1472         ret = drm_object_property_set_value(&connector->base, property, val);
1473         if (ret)
1474                 return ret;
1475
1476         if (property == dev_priv->force_audio_property) {
1477                 enum hdmi_force_audio i = val;
1478                 bool has_audio;
1479
1480                 if (i == intel_hdmi->force_audio)
1481                         return 0;
1482
1483                 intel_hdmi->force_audio = i;
1484
1485                 if (i == HDMI_AUDIO_AUTO)
1486                         has_audio = intel_hdmi_detect_audio(connector);
1487                 else
1488                         has_audio = (i == HDMI_AUDIO_ON);
1489
1490                 if (i == HDMI_AUDIO_OFF_DVI)
1491                         intel_hdmi->has_hdmi_sink = 0;
1492
1493                 intel_hdmi->has_audio = has_audio;
1494                 goto done;
1495         }
1496
1497         if (property == dev_priv->broadcast_rgb_property) {
1498                 bool old_auto = intel_hdmi->color_range_auto;
1499                 bool old_range = intel_hdmi->limited_color_range;
1500
1501                 switch (val) {
1502                 case INTEL_BROADCAST_RGB_AUTO:
1503                         intel_hdmi->color_range_auto = true;
1504                         break;
1505                 case INTEL_BROADCAST_RGB_FULL:
1506                         intel_hdmi->color_range_auto = false;
1507                         intel_hdmi->limited_color_range = false;
1508                         break;
1509                 case INTEL_BROADCAST_RGB_LIMITED:
1510                         intel_hdmi->color_range_auto = false;
1511                         intel_hdmi->limited_color_range = true;
1512                         break;
1513                 default:
1514                         return -EINVAL;
1515                 }
1516
1517                 if (old_auto == intel_hdmi->color_range_auto &&
1518                     old_range == intel_hdmi->limited_color_range)
1519                         return 0;
1520
1521                 goto done;
1522         }
1523
1524         if (property == connector->dev->mode_config.aspect_ratio_property) {
1525                 switch (val) {
1526                 case DRM_MODE_PICTURE_ASPECT_NONE:
1527                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
1528                         break;
1529                 case DRM_MODE_PICTURE_ASPECT_4_3:
1530                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_4_3;
1531                         break;
1532                 case DRM_MODE_PICTURE_ASPECT_16_9:
1533                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_16_9;
1534                         break;
1535                 default:
1536                         return -EINVAL;
1537                 }
1538                 goto done;
1539         }
1540
1541         return -EINVAL;
1542
1543 done:
1544         if (intel_dig_port->base.base.crtc)
1545                 intel_crtc_restore_mode(intel_dig_port->base.base.crtc);
1546
1547         return 0;
1548 }
1549
1550 static void intel_hdmi_pre_enable(struct intel_encoder *encoder)
1551 {
1552         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1553         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
1554         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1555
1556         intel_hdmi_prepare(encoder);
1557
1558         intel_hdmi->set_infoframes(&encoder->base,
1559                                    intel_crtc->config->has_hdmi_sink,
1560                                    adjusted_mode);
1561 }
1562
1563 static void vlv_hdmi_pre_enable(struct intel_encoder *encoder)
1564 {
1565         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1566         struct intel_hdmi *intel_hdmi = &dport->hdmi;
1567         struct drm_device *dev = encoder->base.dev;
1568         struct drm_i915_private *dev_priv = dev->dev_private;
1569         struct intel_crtc *intel_crtc =
1570                 to_intel_crtc(encoder->base.crtc);
1571         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1572         enum dpio_channel port = vlv_dport_to_channel(dport);
1573         int pipe = intel_crtc->pipe;
1574         u32 val;
1575
1576         /* Enable clock channels for this port */
1577         mutex_lock(&dev_priv->sb_lock);
1578         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port));
1579         val = 0;
1580         if (pipe)
1581                 val |= (1<<21);
1582         else
1583                 val &= ~(1<<21);
1584         val |= 0x001000c4;
1585         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val);
1586
1587         /* HDMI 1.0V-2dB */
1588         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0);
1589         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), 0x2b245f5f);
1590         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), 0x5578b83a);
1591         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0c782040);
1592         vlv_dpio_write(dev_priv, pipe, VLV_TX3_DW4(port), 0x2b247878);
1593         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000);
1594         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), 0x00002000);
1595         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), DPIO_TX_OCALINIT_EN);
1596
1597         /* Program lane clock */
1598         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018);
1599         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888);
1600         mutex_unlock(&dev_priv->sb_lock);
1601
1602         intel_hdmi->set_infoframes(&encoder->base,
1603                                    intel_crtc->config->has_hdmi_sink,
1604                                    adjusted_mode);
1605
1606         g4x_enable_hdmi(encoder);
1607
1608         vlv_wait_port_ready(dev_priv, dport, 0x0);
1609 }
1610
1611 static void vlv_hdmi_pre_pll_enable(struct intel_encoder *encoder)
1612 {
1613         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1614         struct drm_device *dev = encoder->base.dev;
1615         struct drm_i915_private *dev_priv = dev->dev_private;
1616         struct intel_crtc *intel_crtc =
1617                 to_intel_crtc(encoder->base.crtc);
1618         enum dpio_channel port = vlv_dport_to_channel(dport);
1619         int pipe = intel_crtc->pipe;
1620
1621         intel_hdmi_prepare(encoder);
1622
1623         /* Program Tx lane resets to default */
1624         mutex_lock(&dev_priv->sb_lock);
1625         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port),
1626                          DPIO_PCS_TX_LANE2_RESET |
1627                          DPIO_PCS_TX_LANE1_RESET);
1628         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port),
1629                          DPIO_PCS_CLK_CRI_RXEB_EIOS_EN |
1630                          DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN |
1631                          (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) |
1632                          DPIO_PCS_CLK_SOFT_RESET);
1633
1634         /* Fix up inter-pair skew failure */
1635         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00);
1636         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500);
1637         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000);
1638
1639         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), 0x00002000);
1640         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), DPIO_TX_OCALINIT_EN);
1641         mutex_unlock(&dev_priv->sb_lock);
1642 }
1643
1644 static void chv_data_lane_soft_reset(struct intel_encoder *encoder,
1645                                      bool reset)
1646 {
1647         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1648         enum dpio_channel ch = vlv_dport_to_channel(enc_to_dig_port(&encoder->base));
1649         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1650         enum pipe pipe = crtc->pipe;
1651         uint32_t val;
1652
1653         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch));
1654         if (reset)
1655                 val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
1656         else
1657                 val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET;
1658         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val);
1659
1660         if (crtc->config->lane_count > 2) {
1661                 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch));
1662                 if (reset)
1663                         val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
1664                 else
1665                         val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET;
1666                 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val);
1667         }
1668
1669         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch));
1670         val |= CHV_PCS_REQ_SOFTRESET_EN;
1671         if (reset)
1672                 val &= ~DPIO_PCS_CLK_SOFT_RESET;
1673         else
1674                 val |= DPIO_PCS_CLK_SOFT_RESET;
1675         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val);
1676
1677         if (crtc->config->lane_count > 2) {
1678                 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch));
1679                 val |= CHV_PCS_REQ_SOFTRESET_EN;
1680                 if (reset)
1681                         val &= ~DPIO_PCS_CLK_SOFT_RESET;
1682                 else
1683                         val |= DPIO_PCS_CLK_SOFT_RESET;
1684                 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val);
1685         }
1686 }
1687
1688 static void chv_hdmi_pre_pll_enable(struct intel_encoder *encoder)
1689 {
1690         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1691         struct drm_device *dev = encoder->base.dev;
1692         struct drm_i915_private *dev_priv = dev->dev_private;
1693         struct intel_crtc *intel_crtc =
1694                 to_intel_crtc(encoder->base.crtc);
1695         enum dpio_channel ch = vlv_dport_to_channel(dport);
1696         enum pipe pipe = intel_crtc->pipe;
1697         u32 val;
1698
1699         intel_hdmi_prepare(encoder);
1700
1701         /*
1702          * Must trick the second common lane into life.
1703          * Otherwise we can't even access the PLL.
1704          */
1705         if (ch == DPIO_CH0 && pipe == PIPE_B)
1706                 dport->release_cl2_override =
1707                         !chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, true);
1708
1709         chv_phy_powergate_lanes(encoder, true, 0x0);
1710
1711         mutex_lock(&dev_priv->sb_lock);
1712
1713         /* Assert data lane reset */
1714         chv_data_lane_soft_reset(encoder, true);
1715
1716         /* program left/right clock distribution */
1717         if (pipe != PIPE_B) {
1718                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
1719                 val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
1720                 if (ch == DPIO_CH0)
1721                         val |= CHV_BUFLEFTENA1_FORCE;
1722                 if (ch == DPIO_CH1)
1723                         val |= CHV_BUFRIGHTENA1_FORCE;
1724                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
1725         } else {
1726                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
1727                 val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
1728                 if (ch == DPIO_CH0)
1729                         val |= CHV_BUFLEFTENA2_FORCE;
1730                 if (ch == DPIO_CH1)
1731                         val |= CHV_BUFRIGHTENA2_FORCE;
1732                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
1733         }
1734
1735         /* program clock channel usage */
1736         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch));
1737         val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;
1738         if (pipe != PIPE_B)
1739                 val &= ~CHV_PCS_USEDCLKCHANNEL;
1740         else
1741                 val |= CHV_PCS_USEDCLKCHANNEL;
1742         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val);
1743
1744         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch));
1745         val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;
1746         if (pipe != PIPE_B)
1747                 val &= ~CHV_PCS_USEDCLKCHANNEL;
1748         else
1749                 val |= CHV_PCS_USEDCLKCHANNEL;
1750         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val);
1751
1752         /*
1753          * This a a bit weird since generally CL
1754          * matches the pipe, but here we need to
1755          * pick the CL based on the port.
1756          */
1757         val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch));
1758         if (pipe != PIPE_B)
1759                 val &= ~CHV_CMN_USEDCLKCHANNEL;
1760         else
1761                 val |= CHV_CMN_USEDCLKCHANNEL;
1762         vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val);
1763
1764         mutex_unlock(&dev_priv->sb_lock);
1765 }
1766
1767 static void chv_hdmi_post_pll_disable(struct intel_encoder *encoder)
1768 {
1769         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1770         enum pipe pipe = to_intel_crtc(encoder->base.crtc)->pipe;
1771         u32 val;
1772
1773         mutex_lock(&dev_priv->sb_lock);
1774
1775         /* disable left/right clock distribution */
1776         if (pipe != PIPE_B) {
1777                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
1778                 val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
1779                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
1780         } else {
1781                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
1782                 val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
1783                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
1784         }
1785
1786         mutex_unlock(&dev_priv->sb_lock);
1787
1788         /*
1789          * Leave the power down bit cleared for at least one
1790          * lane so that chv_powergate_phy_ch() will power
1791          * on something when the channel is otherwise unused.
1792          * When the port is off and the override is removed
1793          * the lanes power down anyway, so otherwise it doesn't
1794          * really matter what the state of power down bits is
1795          * after this.
1796          */
1797         chv_phy_powergate_lanes(encoder, false, 0x0);
1798 }
1799
1800 static void vlv_hdmi_post_disable(struct intel_encoder *encoder)
1801 {
1802         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1803         struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
1804         struct intel_crtc *intel_crtc =
1805                 to_intel_crtc(encoder->base.crtc);
1806         enum dpio_channel port = vlv_dport_to_channel(dport);
1807         int pipe = intel_crtc->pipe;
1808
1809         /* Reset lanes to avoid HDMI flicker (VLV w/a) */
1810         mutex_lock(&dev_priv->sb_lock);
1811         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), 0x00000000);
1812         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), 0x00e00060);
1813         mutex_unlock(&dev_priv->sb_lock);
1814 }
1815
1816 static void chv_hdmi_post_disable(struct intel_encoder *encoder)
1817 {
1818         struct drm_device *dev = encoder->base.dev;
1819         struct drm_i915_private *dev_priv = dev->dev_private;
1820
1821         mutex_lock(&dev_priv->sb_lock);
1822
1823         /* Assert data lane reset */
1824         chv_data_lane_soft_reset(encoder, true);
1825
1826         mutex_unlock(&dev_priv->sb_lock);
1827 }
1828
1829 static void chv_hdmi_pre_enable(struct intel_encoder *encoder)
1830 {
1831         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1832         struct intel_hdmi *intel_hdmi = &dport->hdmi;
1833         struct drm_device *dev = encoder->base.dev;
1834         struct drm_i915_private *dev_priv = dev->dev_private;
1835         struct intel_crtc *intel_crtc =
1836                 to_intel_crtc(encoder->base.crtc);
1837         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1838         enum dpio_channel ch = vlv_dport_to_channel(dport);
1839         int pipe = intel_crtc->pipe;
1840         int data, i, stagger;
1841         u32 val;
1842
1843         mutex_lock(&dev_priv->sb_lock);
1844
1845         /* allow hardware to manage TX FIFO reset source */
1846         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch));
1847         val &= ~DPIO_LANEDESKEW_STRAP_OVRD;
1848         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val);
1849
1850         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch));
1851         val &= ~DPIO_LANEDESKEW_STRAP_OVRD;
1852         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val);
1853
1854         /* Program Tx latency optimal setting */
1855         for (i = 0; i < 4; i++) {
1856                 /* Set the upar bit */
1857                 data = (i == 1) ? 0x0 : 0x1;
1858                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i),
1859                                 data << DPIO_UPAR_SHIFT);
1860         }
1861
1862         /* Data lane stagger programming */
1863         if (intel_crtc->config->port_clock > 270000)
1864                 stagger = 0x18;
1865         else if (intel_crtc->config->port_clock > 135000)
1866                 stagger = 0xd;
1867         else if (intel_crtc->config->port_clock > 67500)
1868                 stagger = 0x7;
1869         else if (intel_crtc->config->port_clock > 33750)
1870                 stagger = 0x4;
1871         else
1872                 stagger = 0x2;
1873
1874         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch));
1875         val |= DPIO_TX2_STAGGER_MASK(0x1f);
1876         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val);
1877
1878         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch));
1879         val |= DPIO_TX2_STAGGER_MASK(0x1f);
1880         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val);
1881
1882         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW12(ch),
1883                        DPIO_LANESTAGGER_STRAP(stagger) |
1884                        DPIO_LANESTAGGER_STRAP_OVRD |
1885                        DPIO_TX1_STAGGER_MASK(0x1f) |
1886                        DPIO_TX1_STAGGER_MULT(6) |
1887                        DPIO_TX2_STAGGER_MULT(0));
1888
1889         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW12(ch),
1890                        DPIO_LANESTAGGER_STRAP(stagger) |
1891                        DPIO_LANESTAGGER_STRAP_OVRD |
1892                        DPIO_TX1_STAGGER_MASK(0x1f) |
1893                        DPIO_TX1_STAGGER_MULT(7) |
1894                        DPIO_TX2_STAGGER_MULT(5));
1895
1896         /* Deassert data lane reset */
1897         chv_data_lane_soft_reset(encoder, false);
1898
1899         /* Clear calc init */
1900         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
1901         val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
1902         val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK);
1903         val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5;
1904         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
1905
1906         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
1907         val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
1908         val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK);
1909         val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5;
1910         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
1911
1912         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch));
1913         val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK);
1914         val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000;
1915         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val);
1916
1917         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch));
1918         val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK);
1919         val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000;
1920         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val);
1921
1922         /* FIXME: Program the support xxx V-dB */
1923         /* Use 800mV-0dB */
1924         for (i = 0; i < 4; i++) {
1925                 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i));
1926                 val &= ~DPIO_SWING_DEEMPH9P5_MASK;
1927                 val |= 128 << DPIO_SWING_DEEMPH9P5_SHIFT;
1928                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val);
1929         }
1930
1931         for (i = 0; i < 4; i++) {
1932                 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i));
1933
1934                 val &= ~DPIO_SWING_MARGIN000_MASK;
1935                 val |= 102 << DPIO_SWING_MARGIN000_SHIFT;
1936
1937                 /*
1938                  * Supposedly this value shouldn't matter when unique transition
1939                  * scale is disabled, but in fact it does matter. Let's just
1940                  * always program the same value and hope it's OK.
1941                  */
1942                 val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT);
1943                 val |= 0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT;
1944
1945                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val);
1946         }
1947
1948         /*
1949          * The document said it needs to set bit 27 for ch0 and bit 26
1950          * for ch1. Might be a typo in the doc.
1951          * For now, for this unique transition scale selection, set bit
1952          * 27 for ch0 and ch1.
1953          */
1954         for (i = 0; i < 4; i++) {
1955                 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i));
1956                 val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN;
1957                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val);
1958         }
1959
1960         /* Start swing calculation */
1961         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
1962         val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
1963         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
1964
1965         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
1966         val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
1967         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
1968
1969         mutex_unlock(&dev_priv->sb_lock);
1970
1971         intel_hdmi->set_infoframes(&encoder->base,
1972                                    intel_crtc->config->has_hdmi_sink,
1973                                    adjusted_mode);
1974
1975         g4x_enable_hdmi(encoder);
1976
1977         vlv_wait_port_ready(dev_priv, dport, 0x0);
1978
1979         /* Second common lane will stay alive on its own now */
1980         if (dport->release_cl2_override) {
1981                 chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, false);
1982                 dport->release_cl2_override = false;
1983         }
1984 }
1985
1986 static void intel_hdmi_destroy(struct drm_connector *connector)
1987 {
1988         kfree(to_intel_connector(connector)->detect_edid);
1989         drm_connector_cleanup(connector);
1990         kfree(connector);
1991 }
1992
1993 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
1994         .dpms = drm_atomic_helper_connector_dpms,
1995         .detect = intel_hdmi_detect,
1996         .force = intel_hdmi_force,
1997         .fill_modes = drm_helper_probe_single_connector_modes,
1998         .set_property = intel_hdmi_set_property,
1999         .atomic_get_property = intel_connector_atomic_get_property,
2000         .destroy = intel_hdmi_destroy,
2001         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
2002         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
2003 };
2004
2005 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
2006         .get_modes = intel_hdmi_get_modes,
2007         .mode_valid = intel_hdmi_mode_valid,
2008         .best_encoder = intel_best_encoder,
2009 };
2010
2011 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
2012         .destroy = intel_encoder_destroy,
2013 };
2014
2015 static void
2016 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
2017 {
2018         intel_attach_force_audio_property(connector);
2019         intel_attach_broadcast_rgb_property(connector);
2020         intel_hdmi->color_range_auto = true;
2021         intel_attach_aspect_ratio_property(connector);
2022         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
2023 }
2024
2025 void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
2026                                struct intel_connector *intel_connector)
2027 {
2028         struct drm_connector *connector = &intel_connector->base;
2029         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
2030         struct intel_encoder *intel_encoder = &intel_dig_port->base;
2031         struct drm_device *dev = intel_encoder->base.dev;
2032         struct drm_i915_private *dev_priv = dev->dev_private;
2033         enum port port = intel_dig_port->port;
2034         uint8_t alternate_ddc_pin;
2035
2036         drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
2037                            DRM_MODE_CONNECTOR_HDMIA);
2038         drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
2039
2040         connector->interlace_allowed = 1;
2041         connector->doublescan_allowed = 0;
2042         connector->stereo_allowed = 1;
2043
2044         switch (port) {
2045         case PORT_B:
2046                 if (IS_BROXTON(dev_priv))
2047                         intel_hdmi->ddc_bus = GMBUS_PIN_1_BXT;
2048                 else
2049                         intel_hdmi->ddc_bus = GMBUS_PIN_DPB;
2050                 /*
2051                  * On BXT A0/A1, sw needs to activate DDIA HPD logic and
2052                  * interrupts to check the external panel connection.
2053                  */
2054                 if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
2055                         intel_encoder->hpd_pin = HPD_PORT_A;
2056                 else
2057                         intel_encoder->hpd_pin = HPD_PORT_B;
2058                 break;
2059         case PORT_C:
2060                 if (IS_BROXTON(dev_priv))
2061                         intel_hdmi->ddc_bus = GMBUS_PIN_2_BXT;
2062                 else
2063                         intel_hdmi->ddc_bus = GMBUS_PIN_DPC;
2064                 intel_encoder->hpd_pin = HPD_PORT_C;
2065                 break;
2066         case PORT_D:
2067                 if (WARN_ON(IS_BROXTON(dev_priv)))
2068                         intel_hdmi->ddc_bus = GMBUS_PIN_DISABLED;
2069                 else if (IS_CHERRYVIEW(dev_priv))
2070                         intel_hdmi->ddc_bus = GMBUS_PIN_DPD_CHV;
2071                 else
2072                         intel_hdmi->ddc_bus = GMBUS_PIN_DPD;
2073                 intel_encoder->hpd_pin = HPD_PORT_D;
2074                 break;
2075         case PORT_E:
2076                 /* On SKL PORT E doesn't have seperate GMBUS pin
2077                  *  We rely on VBT to set a proper alternate GMBUS pin. */
2078                 alternate_ddc_pin =
2079                         dev_priv->vbt.ddi_port_info[PORT_E].alternate_ddc_pin;
2080                 switch (alternate_ddc_pin) {
2081                 case DDC_PIN_B:
2082                         intel_hdmi->ddc_bus = GMBUS_PIN_DPB;
2083                         break;
2084                 case DDC_PIN_C:
2085                         intel_hdmi->ddc_bus = GMBUS_PIN_DPC;
2086                         break;
2087                 case DDC_PIN_D:
2088                         intel_hdmi->ddc_bus = GMBUS_PIN_DPD;
2089                         break;
2090                 default:
2091                         MISSING_CASE(alternate_ddc_pin);
2092                 }
2093                 intel_encoder->hpd_pin = HPD_PORT_E;
2094                 break;
2095         case PORT_A:
2096                 intel_encoder->hpd_pin = HPD_PORT_A;
2097                 /* Internal port only for eDP. */
2098         default:
2099                 BUG();
2100         }
2101
2102         if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
2103                 intel_hdmi->write_infoframe = vlv_write_infoframe;
2104                 intel_hdmi->set_infoframes = vlv_set_infoframes;
2105                 intel_hdmi->infoframe_enabled = vlv_infoframe_enabled;
2106         } else if (IS_G4X(dev)) {
2107                 intel_hdmi->write_infoframe = g4x_write_infoframe;
2108                 intel_hdmi->set_infoframes = g4x_set_infoframes;
2109                 intel_hdmi->infoframe_enabled = g4x_infoframe_enabled;
2110         } else if (HAS_DDI(dev)) {
2111                 intel_hdmi->write_infoframe = hsw_write_infoframe;
2112                 intel_hdmi->set_infoframes = hsw_set_infoframes;
2113                 intel_hdmi->infoframe_enabled = hsw_infoframe_enabled;
2114         } else if (HAS_PCH_IBX(dev)) {
2115                 intel_hdmi->write_infoframe = ibx_write_infoframe;
2116                 intel_hdmi->set_infoframes = ibx_set_infoframes;
2117                 intel_hdmi->infoframe_enabled = ibx_infoframe_enabled;
2118         } else {
2119                 intel_hdmi->write_infoframe = cpt_write_infoframe;
2120                 intel_hdmi->set_infoframes = cpt_set_infoframes;
2121                 intel_hdmi->infoframe_enabled = cpt_infoframe_enabled;
2122         }
2123
2124         if (HAS_DDI(dev))
2125                 intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
2126         else
2127                 intel_connector->get_hw_state = intel_connector_get_hw_state;
2128         intel_connector->unregister = intel_connector_unregister;
2129
2130         intel_hdmi_add_properties(intel_hdmi, connector);
2131
2132         intel_connector_attach_encoder(intel_connector, intel_encoder);
2133         drm_connector_register(connector);
2134         intel_hdmi->attached_connector = intel_connector;
2135
2136         /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
2137          * 0xd.  Failure to do so will result in spurious interrupts being
2138          * generated on the port when a cable is not attached.
2139          */
2140         if (IS_G4X(dev) && !IS_GM45(dev)) {
2141                 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
2142                 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
2143         }
2144 }
2145
2146 void intel_hdmi_init(struct drm_device *dev,
2147                      i915_reg_t hdmi_reg, enum port port)
2148 {
2149         struct drm_i915_private *dev_priv = dev->dev_private;
2150         struct intel_digital_port *intel_dig_port;
2151         struct intel_encoder *intel_encoder;
2152         struct intel_connector *intel_connector;
2153
2154         intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL);
2155         if (!intel_dig_port)
2156                 return;
2157
2158         intel_connector = intel_connector_alloc();
2159         if (!intel_connector) {
2160                 kfree(intel_dig_port);
2161                 return;
2162         }
2163
2164         intel_encoder = &intel_dig_port->base;
2165
2166         drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
2167                          DRM_MODE_ENCODER_TMDS, NULL);
2168
2169         intel_encoder->compute_config = intel_hdmi_compute_config;
2170         if (HAS_PCH_SPLIT(dev)) {
2171                 intel_encoder->disable = pch_disable_hdmi;
2172                 intel_encoder->post_disable = pch_post_disable_hdmi;
2173         } else {
2174                 intel_encoder->disable = g4x_disable_hdmi;
2175         }
2176         intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
2177         intel_encoder->get_config = intel_hdmi_get_config;
2178         if (IS_CHERRYVIEW(dev)) {
2179                 intel_encoder->pre_pll_enable = chv_hdmi_pre_pll_enable;
2180                 intel_encoder->pre_enable = chv_hdmi_pre_enable;
2181                 intel_encoder->enable = vlv_enable_hdmi;
2182                 intel_encoder->post_disable = chv_hdmi_post_disable;
2183                 intel_encoder->post_pll_disable = chv_hdmi_post_pll_disable;
2184         } else if (IS_VALLEYVIEW(dev)) {
2185                 intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
2186                 intel_encoder->pre_enable = vlv_hdmi_pre_enable;
2187                 intel_encoder->enable = vlv_enable_hdmi;
2188                 intel_encoder->post_disable = vlv_hdmi_post_disable;
2189         } else {
2190                 intel_encoder->pre_enable = intel_hdmi_pre_enable;
2191                 if (HAS_PCH_CPT(dev))
2192                         intel_encoder->enable = cpt_enable_hdmi;
2193                 else if (HAS_PCH_IBX(dev))
2194                         intel_encoder->enable = ibx_enable_hdmi;
2195                 else
2196                         intel_encoder->enable = g4x_enable_hdmi;
2197         }
2198
2199         intel_encoder->type = INTEL_OUTPUT_HDMI;
2200         if (IS_CHERRYVIEW(dev)) {
2201                 if (port == PORT_D)
2202                         intel_encoder->crtc_mask = 1 << 2;
2203                 else
2204                         intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
2205         } else {
2206                 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
2207         }
2208         intel_encoder->cloneable = 1 << INTEL_OUTPUT_ANALOG;
2209         /*
2210          * BSpec is unclear about HDMI+HDMI cloning on g4x, but it seems
2211          * to work on real hardware. And since g4x can send infoframes to
2212          * only one port anyway, nothing is lost by allowing it.
2213          */
2214         if (IS_G4X(dev))
2215                 intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
2216
2217         intel_dig_port->port = port;
2218         dev_priv->dig_port_map[port] = intel_encoder;
2219         intel_dig_port->hdmi.hdmi_reg = hdmi_reg;
2220         intel_dig_port->dp.output_reg = INVALID_MMIO_REG;
2221
2222         intel_hdmi_init_connector(intel_dig_port, intel_connector);
2223 }