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 = to_i915(dev);
  51         uint32_t enabled_bits;
  52
  53         enabled_bits = HAS_DDI(dev_priv) ? 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 = to_i915(dev);
 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 = to_i915(dev);
 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 = to_i915(dev);
 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 = to_i915(dev);
 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 = to_i915(dev);
 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 = to_i915(encoder->dev);
 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 = to_i915(encoder->dev);
 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))
 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 = to_i915(encoder->dev);
 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 = to_i915(encoder->dev);
 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 = to_i915(encoder->dev);
 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 = to_i915(encoder->dev);
 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 void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable)
 840 {
 841         struct drm_i915_private *dev_priv = to_i915(intel_hdmi_to_dev(hdmi));
 842         struct i2c_adapter *adapter =
 843                 intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
 844
 845         if (hdmi->dp_dual_mode.type < DRM_DP_DUAL_MODE_TYPE2_DVI)
 846                 return;
 847
 848         DRM_DEBUG_KMS("%s DP dual mode adaptor TMDS output\n",
 849                       enable ? "Enabling" : "Disabling");
 850
 851         drm_dp_dual_mode_set_tmds_output(hdmi->dp_dual_mode.type,
 852                                          adapter, enable);
 853 }
 854
 855 static void intel_hdmi_prepare(struct intel_encoder *encoder)
 856 {
 857         struct drm_device *dev = encoder->base.dev;
 858         struct drm_i915_private *dev_priv = to_i915(dev);
 859         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 860         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 861         const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
 862         u32 hdmi_val;
 863
 864         intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
 865
 866         hdmi_val = SDVO_ENCODING_HDMI;
 867         if (!HAS_PCH_SPLIT(dev_priv) && crtc->config->limited_color_range)
 868                 hdmi_val |= HDMI_COLOR_RANGE_16_235;
 869         if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
 870                 hdmi_val |= SDVO_VSYNC_ACTIVE_HIGH;
 871         if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
 872                 hdmi_val |= SDVO_HSYNC_ACTIVE_HIGH;
 873
 874         if (crtc->config->pipe_bpp > 24)
 875                 hdmi_val |= HDMI_COLOR_FORMAT_12bpc;
 876         else
 877                 hdmi_val |= SDVO_COLOR_FORMAT_8bpc;
 878
 879         if (crtc->config->has_hdmi_sink)
 880                 hdmi_val |= HDMI_MODE_SELECT_HDMI;
 881
 882         if (HAS_PCH_CPT(dev_priv))
 883                 hdmi_val |= SDVO_PIPE_SEL_CPT(crtc->pipe);
 884         else if (IS_CHERRYVIEW(dev_priv))
 885                 hdmi_val |= SDVO_PIPE_SEL_CHV(crtc->pipe);
 886         else
 887                 hdmi_val |= SDVO_PIPE_SEL(crtc->pipe);
 888
 889         I915_WRITE(intel_hdmi->hdmi_reg, hdmi_val);
 890         POSTING_READ(intel_hdmi->hdmi_reg);
 891 }
 892
 893 static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
 894                                     enum pipe *pipe)
 895 {
 896         struct drm_device *dev = encoder->base.dev;
 897         struct drm_i915_private *dev_priv = to_i915(dev);
 898         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 899         enum intel_display_power_domain power_domain;
 900         u32 tmp;
 901         bool ret;
 902
 903         power_domain = intel_display_port_power_domain(encoder);
 904         if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
 905                 return false;
 906
 907         ret = false;
 908
 909         tmp = I915_READ(intel_hdmi->hdmi_reg);
 910
 911         if (!(tmp & SDVO_ENABLE))
 912                 goto out;
 913
 914         if (HAS_PCH_CPT(dev_priv))
 915                 *pipe = PORT_TO_PIPE_CPT(tmp);
 916         else if (IS_CHERRYVIEW(dev_priv))
 917                 *pipe = SDVO_PORT_TO_PIPE_CHV(tmp);
 918         else
 919                 *pipe = PORT_TO_PIPE(tmp);
 920
 921         ret = true;
 922
 923 out:
 924         intel_display_power_put(dev_priv, power_domain);
 925
 926         return ret;
 927 }
 928
 929 static void intel_hdmi_get_config(struct intel_encoder *encoder,
 930                                   struct intel_crtc_state *pipe_config)
 931 {
 932         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 933         struct drm_device *dev = encoder->base.dev;
 934         struct drm_i915_private *dev_priv = to_i915(dev);
 935         u32 tmp, flags = 0;
 936         int dotclock;
 937
 938         tmp = I915_READ(intel_hdmi->hdmi_reg);
 939
 940         if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
 941                 flags |= DRM_MODE_FLAG_PHSYNC;
 942         else
 943                 flags |= DRM_MODE_FLAG_NHSYNC;
 944
 945         if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
 946                 flags |= DRM_MODE_FLAG_PVSYNC;
 947         else
 948                 flags |= DRM_MODE_FLAG_NVSYNC;
 949
 950         if (tmp & HDMI_MODE_SELECT_HDMI)
 951                 pipe_config->has_hdmi_sink = true;
 952
 953         if (intel_hdmi->infoframe_enabled(&encoder->base, pipe_config))
 954                 pipe_config->has_infoframe = true;
 955
 956         if (tmp & SDVO_AUDIO_ENABLE)
 957                 pipe_config->has_audio = true;
 958
 959         if (!HAS_PCH_SPLIT(dev_priv) &&
 960             tmp & HDMI_COLOR_RANGE_16_235)
 961                 pipe_config->limited_color_range = true;
 962
 963         pipe_config->base.adjusted_mode.flags |= flags;
 964
 965         if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
 966                 dotclock = pipe_config->port_clock * 2 / 3;
 967         else
 968                 dotclock = pipe_config->port_clock;
 969
 970         if (pipe_config->pixel_multiplier)
 971                 dotclock /= pipe_config->pixel_multiplier;
 972
 973         pipe_config->base.adjusted_mode.crtc_clock = dotclock;
 974
 975         pipe_config->lane_count = 4;
 976 }
 977
 978 static void intel_enable_hdmi_audio(struct intel_encoder *encoder)
 979 {
 980         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 981
 982         WARN_ON(!crtc->config->has_hdmi_sink);
 983         DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
 984                          pipe_name(crtc->pipe));
 985         intel_audio_codec_enable(encoder);
 986 }
 987
 988 static void g4x_enable_hdmi(struct intel_encoder *encoder,
 989                             struct intel_crtc_state *pipe_config,
 990                             struct drm_connector_state *conn_state)
 991 {
 992         struct drm_device *dev = encoder->base.dev;
 993         struct drm_i915_private *dev_priv = to_i915(dev);
 994         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 995         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 996         u32 temp;
 997
 998         temp = I915_READ(intel_hdmi->hdmi_reg);
 999
1000         temp |= SDVO_ENABLE;
1001         if (crtc->config->has_audio)
1002                 temp |= SDVO_AUDIO_ENABLE;
1003
1004         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1005         POSTING_READ(intel_hdmi->hdmi_reg);
1006
1007         if (crtc->config->has_audio)
1008                 intel_enable_hdmi_audio(encoder);
1009 }
1010
1011 static void ibx_enable_hdmi(struct intel_encoder *encoder,
1012                             struct intel_crtc_state *pipe_config,
1013                             struct drm_connector_state *conn_state)
1014 {
1015         struct drm_device *dev = encoder->base.dev;
1016         struct drm_i915_private *dev_priv = to_i915(dev);
1017         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1018         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1019         u32 temp;
1020
1021         temp = I915_READ(intel_hdmi->hdmi_reg);
1022
1023         temp |= SDVO_ENABLE;
1024         if (crtc->config->has_audio)
1025                 temp |= SDVO_AUDIO_ENABLE;
1026
1027         /*
1028          * HW workaround, need to write this twice for issue
1029          * that may result in first write getting masked.
1030          */
1031         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1032         POSTING_READ(intel_hdmi->hdmi_reg);
1033         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1034         POSTING_READ(intel_hdmi->hdmi_reg);
1035
1036         /*
1037          * HW workaround, need to toggle enable bit off and on
1038          * for 12bpc with pixel repeat.
1039          *
1040          * FIXME: BSpec says this should be done at the end of
1041          * of the modeset sequence, so not sure if this isn't too soon.
1042          */
1043         if (crtc->config->pipe_bpp > 24 &&
1044             crtc->config->pixel_multiplier > 1) {
1045                 I915_WRITE(intel_hdmi->hdmi_reg, temp & ~SDVO_ENABLE);
1046                 POSTING_READ(intel_hdmi->hdmi_reg);
1047
1048                 /*
1049                  * HW workaround, need to write this twice for issue
1050                  * that may result in first write getting masked.
1051                  */
1052                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1053                 POSTING_READ(intel_hdmi->hdmi_reg);
1054                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1055                 POSTING_READ(intel_hdmi->hdmi_reg);
1056         }
1057
1058         if (crtc->config->has_audio)
1059                 intel_enable_hdmi_audio(encoder);
1060 }
1061
1062 static void cpt_enable_hdmi(struct intel_encoder *encoder,
1063                             struct intel_crtc_state *pipe_config,
1064                             struct drm_connector_state *conn_state)
1065 {
1066         struct drm_device *dev = encoder->base.dev;
1067         struct drm_i915_private *dev_priv = to_i915(dev);
1068         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1069         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1070         enum pipe pipe = crtc->pipe;
1071         u32 temp;
1072
1073         temp = I915_READ(intel_hdmi->hdmi_reg);
1074
1075         temp |= SDVO_ENABLE;
1076         if (crtc->config->has_audio)
1077                 temp |= SDVO_AUDIO_ENABLE;
1078
1079         /*
1080          * WaEnableHDMI8bpcBefore12bpc:snb,ivb
1081          *
1082          * The procedure for 12bpc is as follows:
1083          * 1. disable HDMI clock gating
1084          * 2. enable HDMI with 8bpc
1085          * 3. enable HDMI with 12bpc
1086          * 4. enable HDMI clock gating
1087          */
1088
1089         if (crtc->config->pipe_bpp > 24) {
1090                 I915_WRITE(TRANS_CHICKEN1(pipe),
1091                            I915_READ(TRANS_CHICKEN1(pipe)) |
1092                            TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
1093
1094                 temp &= ~SDVO_COLOR_FORMAT_MASK;
1095                 temp |= SDVO_COLOR_FORMAT_8bpc;
1096         }
1097
1098         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1099         POSTING_READ(intel_hdmi->hdmi_reg);
1100
1101         if (crtc->config->pipe_bpp > 24) {
1102                 temp &= ~SDVO_COLOR_FORMAT_MASK;
1103                 temp |= HDMI_COLOR_FORMAT_12bpc;
1104
1105                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1106                 POSTING_READ(intel_hdmi->hdmi_reg);
1107
1108                 I915_WRITE(TRANS_CHICKEN1(pipe),
1109                            I915_READ(TRANS_CHICKEN1(pipe)) &
1110                            ~TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
1111         }
1112
1113         if (crtc->config->has_audio)
1114                 intel_enable_hdmi_audio(encoder);
1115 }
1116
1117 static void vlv_enable_hdmi(struct intel_encoder *encoder,
1118                             struct intel_crtc_state *pipe_config,
1119                             struct drm_connector_state *conn_state)
1120 {
1121 }
1122
1123 static void intel_disable_hdmi(struct intel_encoder *encoder,
1124                                struct intel_crtc_state *old_crtc_state,
1125                                struct drm_connector_state *old_conn_state)
1126 {
1127         struct drm_device *dev = encoder->base.dev;
1128         struct drm_i915_private *dev_priv = to_i915(dev);
1129         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1130         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1131         u32 temp;
1132
1133         temp = I915_READ(intel_hdmi->hdmi_reg);
1134
1135         temp &= ~(SDVO_ENABLE | SDVO_AUDIO_ENABLE);
1136         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1137         POSTING_READ(intel_hdmi->hdmi_reg);
1138
1139         /*
1140          * HW workaround for IBX, we need to move the port
1141          * to transcoder A after disabling it to allow the
1142          * matching DP port to be enabled on transcoder A.
1143          */
1144         if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B) {
1145                 /*
1146                  * We get CPU/PCH FIFO underruns on the other pipe when
1147                  * doing the workaround. Sweep them under the rug.
1148                  */
1149                 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
1150                 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
1151
1152                 temp &= ~SDVO_PIPE_B_SELECT;
1153                 temp |= SDVO_ENABLE;
1154                 /*
1155                  * HW workaround, need to write this twice for issue
1156                  * that may result in first write getting masked.
1157                  */
1158                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1159                 POSTING_READ(intel_hdmi->hdmi_reg);
1160                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1161                 POSTING_READ(intel_hdmi->hdmi_reg);
1162
1163                 temp &= ~SDVO_ENABLE;
1164                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1165                 POSTING_READ(intel_hdmi->hdmi_reg);
1166
1167                 intel_wait_for_vblank_if_active(&dev_priv->drm, PIPE_A);
1168                 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
1169                 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
1170         }
1171
1172         intel_hdmi->set_infoframes(&encoder->base, false, NULL);
1173
1174         intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
1175 }
1176
1177 static void g4x_disable_hdmi(struct intel_encoder *encoder,
1178                              struct intel_crtc_state *old_crtc_state,
1179                              struct drm_connector_state *old_conn_state)
1180 {
1181         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1182
1183         if (crtc->config->has_audio)
1184                 intel_audio_codec_disable(encoder);
1185
1186         intel_disable_hdmi(encoder, old_crtc_state, old_conn_state);
1187 }
1188
1189 static void pch_disable_hdmi(struct intel_encoder *encoder,
1190                              struct intel_crtc_state *old_crtc_state,
1191                              struct drm_connector_state *old_conn_state)
1192 {
1193         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1194
1195         if (crtc->config->has_audio)
1196                 intel_audio_codec_disable(encoder);
1197 }
1198
1199 static void pch_post_disable_hdmi(struct intel_encoder *encoder,
1200                                   struct intel_crtc_state *old_crtc_state,
1201                                   struct drm_connector_state *old_conn_state)
1202 {
1203         intel_disable_hdmi(encoder, old_crtc_state, old_conn_state);
1204 }
1205
1206 static int intel_hdmi_source_max_tmds_clock(struct drm_i915_private *dev_priv)
1207 {
1208         if (IS_G4X(dev_priv))
1209                 return 165000;
1210         else if (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)
1211                 return 300000;
1212         else
1213                 return 225000;
1214 }
1215
1216 static int hdmi_port_clock_limit(struct intel_hdmi *hdmi,
1217                                  bool respect_downstream_limits)
1218 {
1219         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1220         int max_tmds_clock = intel_hdmi_source_max_tmds_clock(to_i915(dev));
1221
1222         if (respect_downstream_limits) {
1223                 struct intel_connector *connector = hdmi->attached_connector;
1224                 const struct drm_display_info *info = &connector->base.display_info;
1225
1226                 if (hdmi->dp_dual_mode.max_tmds_clock)
1227                         max_tmds_clock = min(max_tmds_clock,
1228                                              hdmi->dp_dual_mode.max_tmds_clock);
1229
1230                 if (info->max_tmds_clock)
1231                         max_tmds_clock = min(max_tmds_clock,
1232                                              info->max_tmds_clock);
1233                 else if (!hdmi->has_hdmi_sink)
1234                         max_tmds_clock = min(max_tmds_clock, 165000);
1235         }
1236
1237         return max_tmds_clock;
1238 }
1239
1240 static enum drm_mode_status
1241 hdmi_port_clock_valid(struct intel_hdmi *hdmi,
1242                       int clock, bool respect_downstream_limits)
1243 {
1244         struct drm_i915_private *dev_priv = to_i915(intel_hdmi_to_dev(hdmi));
1245
1246         if (clock < 25000)
1247                 return MODE_CLOCK_LOW;
1248         if (clock > hdmi_port_clock_limit(hdmi, respect_downstream_limits))
1249                 return MODE_CLOCK_HIGH;
1250
1251         /* BXT DPLL can't generate 223-240 MHz */
1252         if (IS_BROXTON(dev_priv) && clock > 223333 && clock < 240000)
1253                 return MODE_CLOCK_RANGE;
1254
1255         /* CHV DPLL can't generate 216-240 MHz */
1256         if (IS_CHERRYVIEW(dev_priv) && clock > 216000 && clock < 240000)
1257                 return MODE_CLOCK_RANGE;
1258
1259         return MODE_OK;
1260 }
1261
1262 static enum drm_mode_status
1263 intel_hdmi_mode_valid(struct drm_connector *connector,
1264                       struct drm_display_mode *mode)
1265 {
1266         struct intel_hdmi *hdmi = intel_attached_hdmi(connector);
1267         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1268         struct drm_i915_private *dev_priv = to_i915(dev);
1269         enum drm_mode_status status;
1270         int clock;
1271         int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
1272
1273         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
1274                 return MODE_NO_DBLESCAN;
1275
1276         clock = mode->clock;
1277
1278         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1279                 clock *= 2;
1280
1281         if (clock > max_dotclk)
1282                 return MODE_CLOCK_HIGH;
1283
1284         if (mode->flags & DRM_MODE_FLAG_DBLCLK)
1285                 clock *= 2;
1286
1287         /* check if we can do 8bpc */
1288         status = hdmi_port_clock_valid(hdmi, clock, true);
1289
1290         /* if we can't do 8bpc we may still be able to do 12bpc */
1291         if (!HAS_GMCH_DISPLAY(dev_priv) && status != MODE_OK)
1292                 status = hdmi_port_clock_valid(hdmi, clock * 3 / 2, true);
1293
1294         return status;
1295 }
1296
1297 static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state)
1298 {
1299         struct drm_device *dev = crtc_state->base.crtc->dev;
1300
1301         if (HAS_GMCH_DISPLAY(to_i915(dev)))
1302                 return false;
1303
1304         /*
1305          * HDMI 12bpc affects the clocks, so it's only possible
1306          * when not cloning with other encoder types.
1307          */
1308         return crtc_state->output_types == 1 << INTEL_OUTPUT_HDMI;
1309 }
1310
1311 bool intel_hdmi_compute_config(struct intel_encoder *encoder,
1312                                struct intel_crtc_state *pipe_config,
1313                                struct drm_connector_state *conn_state)
1314 {
1315         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1316         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1317         struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
1318         int clock_8bpc = pipe_config->base.adjusted_mode.crtc_clock;
1319         int clock_12bpc = clock_8bpc * 3 / 2;
1320         int desired_bpp;
1321
1322         pipe_config->has_hdmi_sink = intel_hdmi->has_hdmi_sink;
1323
1324         if (pipe_config->has_hdmi_sink)
1325                 pipe_config->has_infoframe = true;
1326
1327         if (intel_hdmi->color_range_auto) {
1328                 /* See CEA-861-E - 5.1 Default Encoding Parameters */
1329                 pipe_config->limited_color_range =
1330                         pipe_config->has_hdmi_sink &&
1331                         drm_match_cea_mode(adjusted_mode) > 1;
1332         } else {
1333                 pipe_config->limited_color_range =
1334                         intel_hdmi->limited_color_range;
1335         }
1336
1337         if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) {
1338                 pipe_config->pixel_multiplier = 2;
1339                 clock_8bpc *= 2;
1340                 clock_12bpc *= 2;
1341         }
1342
1343         if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv))
1344                 pipe_config->has_pch_encoder = true;
1345
1346         if (pipe_config->has_hdmi_sink && intel_hdmi->has_audio)
1347                 pipe_config->has_audio = true;
1348
1349         /*
1350          * HDMI is either 12 or 8, so if the display lets 10bpc sneak
1351          * through, clamp it down. Note that g4x/vlv don't support 12bpc hdmi
1352          * outputs. We also need to check that the higher clock still fits
1353          * within limits.
1354          */
1355         if (pipe_config->pipe_bpp > 8*3 && pipe_config->has_hdmi_sink &&
1356             hdmi_port_clock_valid(intel_hdmi, clock_12bpc, true) == MODE_OK &&
1357             hdmi_12bpc_possible(pipe_config)) {
1358                 DRM_DEBUG_KMS("picking bpc to 12 for HDMI output\n");
1359                 desired_bpp = 12*3;
1360
1361                 /* Need to adjust the port link by 1.5x for 12bpc. */
1362                 pipe_config->port_clock = clock_12bpc;
1363         } else {
1364                 DRM_DEBUG_KMS("picking bpc to 8 for HDMI output\n");
1365                 desired_bpp = 8*3;
1366
1367                 pipe_config->port_clock = clock_8bpc;
1368         }
1369
1370         if (!pipe_config->bw_constrained) {
1371                 DRM_DEBUG_KMS("forcing pipe bpc to %i for HDMI\n", desired_bpp);
1372                 pipe_config->pipe_bpp = desired_bpp;
1373         }
1374
1375         if (hdmi_port_clock_valid(intel_hdmi, pipe_config->port_clock,
1376                                   false) != MODE_OK) {
1377                 DRM_DEBUG_KMS("unsupported HDMI clock, rejecting mode\n");
1378                 return false;
1379         }
1380
1381         /* Set user selected PAR to incoming mode's member */
1382         adjusted_mode->picture_aspect_ratio = intel_hdmi->aspect_ratio;
1383
1384         pipe_config->lane_count = 4;
1385
1386         return true;
1387 }
1388
1389 static void
1390 intel_hdmi_unset_edid(struct drm_connector *connector)
1391 {
1392         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1393
1394         intel_hdmi->has_hdmi_sink = false;
1395         intel_hdmi->has_audio = false;
1396         intel_hdmi->rgb_quant_range_selectable = false;
1397
1398         intel_hdmi->dp_dual_mode.type = DRM_DP_DUAL_MODE_NONE;
1399         intel_hdmi->dp_dual_mode.max_tmds_clock = 0;
1400
1401         kfree(to_intel_connector(connector)->detect_edid);
1402         to_intel_connector(connector)->detect_edid = NULL;
1403 }
1404
1405 static void
1406 intel_hdmi_dp_dual_mode_detect(struct drm_connector *connector, bool has_edid)
1407 {
1408         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1409         struct intel_hdmi *hdmi = intel_attached_hdmi(connector);
1410         enum port port = hdmi_to_dig_port(hdmi)->port;
1411         struct i2c_adapter *adapter =
1412                 intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
1413         enum drm_dp_dual_mode_type type = drm_dp_dual_mode_detect(adapter);
1414
1415         /*
1416          * Type 1 DVI adaptors are not required to implement any
1417          * registers, so we can't always detect their presence.
1418          * Ideally we should be able to check the state of the
1419          * CONFIG1 pin, but no such luck on our hardware.
1420          *
1421          * The only method left to us is to check the VBT to see
1422          * if the port is a dual mode capable DP port. But let's
1423          * only do that when we sucesfully read the EDID, to avoid
1424          * confusing log messages about DP dual mode adaptors when
1425          * there's nothing connected to the port.
1426          */
1427         if (type == DRM_DP_DUAL_MODE_UNKNOWN) {
1428                 if (has_edid &&
1429                     intel_bios_is_port_dp_dual_mode(dev_priv, port)) {
1430                         DRM_DEBUG_KMS("Assuming DP dual mode adaptor presence based on VBT\n");
1431                         type = DRM_DP_DUAL_MODE_TYPE1_DVI;
1432                 } else {
1433                         type = DRM_DP_DUAL_MODE_NONE;
1434                 }
1435         }
1436
1437         if (type == DRM_DP_DUAL_MODE_NONE)
1438                 return;
1439
1440         hdmi->dp_dual_mode.type = type;
1441         hdmi->dp_dual_mode.max_tmds_clock =
1442                 drm_dp_dual_mode_max_tmds_clock(type, adapter);
1443
1444         DRM_DEBUG_KMS("DP dual mode adaptor (%s) detected (max TMDS clock: %d kHz)\n",
1445                       drm_dp_get_dual_mode_type_name(type),
1446                       hdmi->dp_dual_mode.max_tmds_clock);
1447 }
1448
1449 static bool
1450 intel_hdmi_set_edid(struct drm_connector *connector)
1451 {
1452         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1453         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1454         struct edid *edid;
1455         bool connected = false;
1456
1457         intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
1458
1459         edid = drm_get_edid(connector,
1460                             intel_gmbus_get_adapter(dev_priv,
1461                             intel_hdmi->ddc_bus));
1462
1463         intel_hdmi_dp_dual_mode_detect(connector, edid != NULL);
1464
1465         intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
1466
1467         to_intel_connector(connector)->detect_edid = edid;
1468         if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
1469                 intel_hdmi->rgb_quant_range_selectable =
1470                         drm_rgb_quant_range_selectable(edid);
1471
1472                 intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
1473                 if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
1474                         intel_hdmi->has_audio =
1475                                 intel_hdmi->force_audio == HDMI_AUDIO_ON;
1476
1477                 if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
1478                         intel_hdmi->has_hdmi_sink =
1479                                 drm_detect_hdmi_monitor(edid);
1480
1481                 connected = true;
1482         }
1483
1484         return connected;
1485 }
1486
1487 static enum drm_connector_status
1488 intel_hdmi_detect(struct drm_connector *connector, bool force)
1489 {
1490         enum drm_connector_status status;
1491         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1492
1493         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1494                       connector->base.id, connector->name);
1495
1496         intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
1497
1498         intel_hdmi_unset_edid(connector);
1499
1500         if (intel_hdmi_set_edid(connector)) {
1501                 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1502
1503                 hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
1504                 status = connector_status_connected;
1505         } else
1506                 status = connector_status_disconnected;
1507
1508         intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
1509
1510         return status;
1511 }
1512
1513 static void
1514 intel_hdmi_force(struct drm_connector *connector)
1515 {
1516         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1517
1518         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1519                       connector->base.id, connector->name);
1520
1521         intel_hdmi_unset_edid(connector);
1522
1523         if (connector->status != connector_status_connected)
1524                 return;
1525
1526         intel_hdmi_set_edid(connector);
1527         hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
1528 }
1529
1530 static int intel_hdmi_get_modes(struct drm_connector *connector)
1531 {
1532         struct edid *edid;
1533
1534         edid = to_intel_connector(connector)->detect_edid;
1535         if (edid == NULL)
1536                 return 0;
1537
1538         return intel_connector_update_modes(connector, edid);
1539 }
1540
1541 static bool
1542 intel_hdmi_detect_audio(struct drm_connector *connector)
1543 {
1544         bool has_audio = false;
1545         struct edid *edid;
1546
1547         edid = to_intel_connector(connector)->detect_edid;
1548         if (edid && edid->input & DRM_EDID_INPUT_DIGITAL)
1549                 has_audio = drm_detect_monitor_audio(edid);
1550
1551         return has_audio;
1552 }
1553
1554 static int
1555 intel_hdmi_set_property(struct drm_connector *connector,
1556                         struct drm_property *property,
1557                         uint64_t val)
1558 {
1559         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1560         struct intel_digital_port *intel_dig_port =
1561                 hdmi_to_dig_port(intel_hdmi);
1562         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1563         int ret;
1564
1565         ret = drm_object_property_set_value(&connector->base, property, val);
1566         if (ret)
1567                 return ret;
1568
1569         if (property == dev_priv->force_audio_property) {
1570                 enum hdmi_force_audio i = val;
1571                 bool has_audio;
1572
1573                 if (i == intel_hdmi->force_audio)
1574                         return 0;
1575
1576                 intel_hdmi->force_audio = i;
1577
1578                 if (i == HDMI_AUDIO_AUTO)
1579                         has_audio = intel_hdmi_detect_audio(connector);
1580                 else
1581                         has_audio = (i == HDMI_AUDIO_ON);
1582
1583                 if (i == HDMI_AUDIO_OFF_DVI)
1584                         intel_hdmi->has_hdmi_sink = 0;
1585
1586                 intel_hdmi->has_audio = has_audio;
1587                 goto done;
1588         }
1589
1590         if (property == dev_priv->broadcast_rgb_property) {
1591                 bool old_auto = intel_hdmi->color_range_auto;
1592                 bool old_range = intel_hdmi->limited_color_range;
1593
1594                 switch (val) {
1595                 case INTEL_BROADCAST_RGB_AUTO:
1596                         intel_hdmi->color_range_auto = true;
1597                         break;
1598                 case INTEL_BROADCAST_RGB_FULL:
1599                         intel_hdmi->color_range_auto = false;
1600                         intel_hdmi->limited_color_range = false;
1601                         break;
1602                 case INTEL_BROADCAST_RGB_LIMITED:
1603                         intel_hdmi->color_range_auto = false;
1604                         intel_hdmi->limited_color_range = true;
1605                         break;
1606                 default:
1607                         return -EINVAL;
1608                 }
1609
1610                 if (old_auto == intel_hdmi->color_range_auto &&
1611                     old_range == intel_hdmi->limited_color_range)
1612                         return 0;
1613
1614                 goto done;
1615         }
1616
1617         if (property == connector->dev->mode_config.aspect_ratio_property) {
1618                 switch (val) {
1619                 case DRM_MODE_PICTURE_ASPECT_NONE:
1620                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
1621                         break;
1622                 case DRM_MODE_PICTURE_ASPECT_4_3:
1623                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_4_3;
1624                         break;
1625                 case DRM_MODE_PICTURE_ASPECT_16_9:
1626                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_16_9;
1627                         break;
1628                 default:
1629                         return -EINVAL;
1630                 }
1631                 goto done;
1632         }
1633
1634         return -EINVAL;
1635
1636 done:
1637         if (intel_dig_port->base.base.crtc)
1638                 intel_crtc_restore_mode(intel_dig_port->base.base.crtc);
1639
1640         return 0;
1641 }
1642
1643 static void intel_hdmi_pre_enable(struct intel_encoder *encoder,
1644                                   struct intel_crtc_state *pipe_config,
1645                                   struct drm_connector_state *conn_state)
1646 {
1647         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1648         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
1649         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1650
1651         intel_hdmi_prepare(encoder);
1652
1653         intel_hdmi->set_infoframes(&encoder->base,
1654                                    intel_crtc->config->has_hdmi_sink,
1655                                    adjusted_mode);
1656 }
1657
1658 static void vlv_hdmi_pre_enable(struct intel_encoder *encoder,
1659                                 struct intel_crtc_state *pipe_config,
1660                                 struct drm_connector_state *conn_state)
1661 {
1662         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1663         struct intel_hdmi *intel_hdmi = &dport->hdmi;
1664         struct drm_device *dev = encoder->base.dev;
1665         struct drm_i915_private *dev_priv = to_i915(dev);
1666         struct intel_crtc *intel_crtc =
1667                 to_intel_crtc(encoder->base.crtc);
1668         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1669
1670         vlv_phy_pre_encoder_enable(encoder);
1671
1672         /* HDMI 1.0V-2dB */
1673         vlv_set_phy_signal_level(encoder, 0x2b245f5f, 0x00002000, 0x5578b83a,
1674                                  0x2b247878);
1675
1676         intel_hdmi->set_infoframes(&encoder->base,
1677                                    intel_crtc->config->has_hdmi_sink,
1678                                    adjusted_mode);
1679
1680         g4x_enable_hdmi(encoder, pipe_config, conn_state);
1681
1682         vlv_wait_port_ready(dev_priv, dport, 0x0);
1683 }
1684
1685 static void vlv_hdmi_pre_pll_enable(struct intel_encoder *encoder,
1686                                     struct intel_crtc_state *pipe_config,
1687                                     struct drm_connector_state *conn_state)
1688 {
1689         intel_hdmi_prepare(encoder);
1690
1691         vlv_phy_pre_pll_enable(encoder);
1692 }
1693
1694 static void chv_hdmi_pre_pll_enable(struct intel_encoder *encoder,
1695                                     struct intel_crtc_state *pipe_config,
1696                                     struct drm_connector_state *conn_state)
1697 {
1698         intel_hdmi_prepare(encoder);
1699
1700         chv_phy_pre_pll_enable(encoder);
1701 }
1702
1703 static void chv_hdmi_post_pll_disable(struct intel_encoder *encoder,
1704                                       struct intel_crtc_state *old_crtc_state,
1705                                       struct drm_connector_state *old_conn_state)
1706 {
1707         chv_phy_post_pll_disable(encoder);
1708 }
1709
1710 static void vlv_hdmi_post_disable(struct intel_encoder *encoder,
1711                                   struct intel_crtc_state *old_crtc_state,
1712                                   struct drm_connector_state *old_conn_state)
1713 {
1714         /* Reset lanes to avoid HDMI flicker (VLV w/a) */
1715         vlv_phy_reset_lanes(encoder);
1716 }
1717
1718 static void chv_hdmi_post_disable(struct intel_encoder *encoder,
1719                                   struct intel_crtc_state *old_crtc_state,
1720                                   struct drm_connector_state *old_conn_state)
1721 {
1722         struct drm_device *dev = encoder->base.dev;
1723         struct drm_i915_private *dev_priv = to_i915(dev);
1724
1725         mutex_lock(&dev_priv->sb_lock);
1726
1727         /* Assert data lane reset */
1728         chv_data_lane_soft_reset(encoder, true);
1729
1730         mutex_unlock(&dev_priv->sb_lock);
1731 }
1732
1733 static void chv_hdmi_pre_enable(struct intel_encoder *encoder,
1734                                 struct intel_crtc_state *pipe_config,
1735                                 struct drm_connector_state *conn_state)
1736 {
1737         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1738         struct intel_hdmi *intel_hdmi = &dport->hdmi;
1739         struct drm_device *dev = encoder->base.dev;
1740         struct drm_i915_private *dev_priv = to_i915(dev);
1741         struct intel_crtc *intel_crtc =
1742                 to_intel_crtc(encoder->base.crtc);
1743         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1744
1745         chv_phy_pre_encoder_enable(encoder);
1746
1747         /* FIXME: Program the support xxx V-dB */
1748         /* Use 800mV-0dB */
1749         chv_set_phy_signal_level(encoder, 128, 102, false);
1750
1751         intel_hdmi->set_infoframes(&encoder->base,
1752                                    intel_crtc->config->has_hdmi_sink,
1753                                    adjusted_mode);
1754
1755         g4x_enable_hdmi(encoder, pipe_config, conn_state);
1756
1757         vlv_wait_port_ready(dev_priv, dport, 0x0);
1758
1759         /* Second common lane will stay alive on its own now */
1760         chv_phy_release_cl2_override(encoder);
1761 }
1762
1763 static void intel_hdmi_destroy(struct drm_connector *connector)
1764 {
1765         kfree(to_intel_connector(connector)->detect_edid);
1766         drm_connector_cleanup(connector);
1767         kfree(connector);
1768 }
1769
1770 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
1771         .dpms = drm_atomic_helper_connector_dpms,
1772         .detect = intel_hdmi_detect,
1773         .force = intel_hdmi_force,
1774         .fill_modes = drm_helper_probe_single_connector_modes,
1775         .set_property = intel_hdmi_set_property,
1776         .atomic_get_property = intel_connector_atomic_get_property,
1777         .late_register = intel_connector_register,
1778         .early_unregister = intel_connector_unregister,
1779         .destroy = intel_hdmi_destroy,
1780         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1781         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1782 };
1783
1784 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
1785         .get_modes = intel_hdmi_get_modes,
1786         .mode_valid = intel_hdmi_mode_valid,
1787 };
1788
1789 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
1790         .destroy = intel_encoder_destroy,
1791 };
1792
1793 static void
1794 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
1795 {
1796         intel_attach_force_audio_property(connector);
1797         intel_attach_broadcast_rgb_property(connector);
1798         intel_hdmi->color_range_auto = true;
1799         intel_attach_aspect_ratio_property(connector);
1800         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
1801 }
1802
1803 static u8 intel_hdmi_ddc_pin(struct drm_i915_private *dev_priv,
1804                              enum port port)
1805 {
1806         const struct ddi_vbt_port_info *info =
1807                 &dev_priv->vbt.ddi_port_info[port];
1808         u8 ddc_pin;
1809
1810         if (info->alternate_ddc_pin) {
1811                 DRM_DEBUG_KMS("Using DDC pin 0x%x for port %c (VBT)\n",
1812                               info->alternate_ddc_pin, port_name(port));
1813                 return info->alternate_ddc_pin;
1814         }
1815
1816         switch (port) {
1817         case PORT_B:
1818                 if (IS_BROXTON(dev_priv))
1819                         ddc_pin = GMBUS_PIN_1_BXT;
1820                 else
1821                         ddc_pin = GMBUS_PIN_DPB;
1822                 break;
1823         case PORT_C:
1824                 if (IS_BROXTON(dev_priv))
1825                         ddc_pin = GMBUS_PIN_2_BXT;
1826                 else
1827                         ddc_pin = GMBUS_PIN_DPC;
1828                 break;
1829         case PORT_D:
1830                 if (IS_CHERRYVIEW(dev_priv))
1831                         ddc_pin = GMBUS_PIN_DPD_CHV;
1832                 else
1833                         ddc_pin = GMBUS_PIN_DPD;
1834                 break;
1835         default:
1836                 MISSING_CASE(port);
1837                 ddc_pin = GMBUS_PIN_DPB;
1838                 break;
1839         }
1840
1841         DRM_DEBUG_KMS("Using DDC pin 0x%x for port %c (platform default)\n",
1842                       ddc_pin, port_name(port));
1843
1844         return ddc_pin;
1845 }
1846
1847 void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
1848                                struct intel_connector *intel_connector)
1849 {
1850         struct drm_connector *connector = &intel_connector->base;
1851         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
1852         struct intel_encoder *intel_encoder = &intel_dig_port->base;
1853         struct drm_device *dev = intel_encoder->base.dev;
1854         struct drm_i915_private *dev_priv = to_i915(dev);
1855         enum port port = intel_dig_port->port;
1856
1857         DRM_DEBUG_KMS("Adding HDMI connector on port %c\n",
1858                       port_name(port));
1859
1860         if (WARN(intel_dig_port->max_lanes < 4,
1861                  "Not enough lanes (%d) for HDMI on port %c\n",
1862                  intel_dig_port->max_lanes, port_name(port)))
1863                 return;
1864
1865         drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
1866                            DRM_MODE_CONNECTOR_HDMIA);
1867         drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
1868
1869         connector->interlace_allowed = 1;
1870         connector->doublescan_allowed = 0;
1871         connector->stereo_allowed = 1;
1872
1873         intel_hdmi->ddc_bus = intel_hdmi_ddc_pin(dev_priv, port);
1874
1875         switch (port) {
1876         case PORT_B:
1877                 /*
1878                  * On BXT A0/A1, sw needs to activate DDIA HPD logic and
1879                  * interrupts to check the external panel connection.
1880                  */
1881                 if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
1882                         intel_encoder->hpd_pin = HPD_PORT_A;
1883                 else
1884                         intel_encoder->hpd_pin = HPD_PORT_B;
1885                 break;
1886         case PORT_C:
1887                 intel_encoder->hpd_pin = HPD_PORT_C;
1888                 break;
1889         case PORT_D:
1890                 intel_encoder->hpd_pin = HPD_PORT_D;
1891                 break;
1892         case PORT_E:
1893                 intel_encoder->hpd_pin = HPD_PORT_E;
1894                 break;
1895         default:
1896                 MISSING_CASE(port);
1897                 return;
1898         }
1899
1900         if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
1901                 intel_hdmi->write_infoframe = vlv_write_infoframe;
1902                 intel_hdmi->set_infoframes = vlv_set_infoframes;
1903                 intel_hdmi->infoframe_enabled = vlv_infoframe_enabled;
1904         } else if (IS_G4X(dev_priv)) {
1905                 intel_hdmi->write_infoframe = g4x_write_infoframe;
1906                 intel_hdmi->set_infoframes = g4x_set_infoframes;
1907                 intel_hdmi->infoframe_enabled = g4x_infoframe_enabled;
1908         } else if (HAS_DDI(dev_priv)) {
1909                 intel_hdmi->write_infoframe = hsw_write_infoframe;
1910                 intel_hdmi->set_infoframes = hsw_set_infoframes;
1911                 intel_hdmi->infoframe_enabled = hsw_infoframe_enabled;
1912         } else if (HAS_PCH_IBX(dev_priv)) {
1913                 intel_hdmi->write_infoframe = ibx_write_infoframe;
1914                 intel_hdmi->set_infoframes = ibx_set_infoframes;
1915                 intel_hdmi->infoframe_enabled = ibx_infoframe_enabled;
1916         } else {
1917                 intel_hdmi->write_infoframe = cpt_write_infoframe;
1918                 intel_hdmi->set_infoframes = cpt_set_infoframes;
1919                 intel_hdmi->infoframe_enabled = cpt_infoframe_enabled;
1920         }
1921
1922         if (HAS_DDI(dev_priv))
1923                 intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
1924         else
1925                 intel_connector->get_hw_state = intel_connector_get_hw_state;
1926
1927         intel_hdmi_add_properties(intel_hdmi, connector);
1928
1929         intel_connector_attach_encoder(intel_connector, intel_encoder);
1930         intel_hdmi->attached_connector = intel_connector;
1931
1932         /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
1933          * 0xd.  Failure to do so will result in spurious interrupts being
1934          * generated on the port when a cable is not attached.
1935          */
1936         if (IS_G4X(dev_priv) && !IS_GM45(dev_priv)) {
1937                 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
1938                 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
1939         }
1940 }
1941
1942 void intel_hdmi_init(struct drm_device *dev,
1943                      i915_reg_t hdmi_reg, enum port port)
1944 {
1945         struct drm_i915_private *dev_priv = to_i915(dev);
1946         struct intel_digital_port *intel_dig_port;
1947         struct intel_encoder *intel_encoder;
1948         struct intel_connector *intel_connector;
1949
1950         intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL);
1951         if (!intel_dig_port)
1952                 return;
1953
1954         intel_connector = intel_connector_alloc();
1955         if (!intel_connector) {
1956                 kfree(intel_dig_port);
1957                 return;
1958         }
1959
1960         intel_encoder = &intel_dig_port->base;
1961
1962         drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
1963                          DRM_MODE_ENCODER_TMDS, "HDMI %c", port_name(port));
1964
1965         intel_encoder->compute_config = intel_hdmi_compute_config;
1966         if (HAS_PCH_SPLIT(dev_priv)) {
1967                 intel_encoder->disable = pch_disable_hdmi;
1968                 intel_encoder->post_disable = pch_post_disable_hdmi;
1969         } else {
1970                 intel_encoder->disable = g4x_disable_hdmi;
1971         }
1972         intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
1973         intel_encoder->get_config = intel_hdmi_get_config;
1974         if (IS_CHERRYVIEW(dev_priv)) {
1975                 intel_encoder->pre_pll_enable = chv_hdmi_pre_pll_enable;
1976                 intel_encoder->pre_enable = chv_hdmi_pre_enable;
1977                 intel_encoder->enable = vlv_enable_hdmi;
1978                 intel_encoder->post_disable = chv_hdmi_post_disable;
1979                 intel_encoder->post_pll_disable = chv_hdmi_post_pll_disable;
1980         } else if (IS_VALLEYVIEW(dev_priv)) {
1981                 intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
1982                 intel_encoder->pre_enable = vlv_hdmi_pre_enable;
1983                 intel_encoder->enable = vlv_enable_hdmi;
1984                 intel_encoder->post_disable = vlv_hdmi_post_disable;
1985         } else {
1986                 intel_encoder->pre_enable = intel_hdmi_pre_enable;
1987                 if (HAS_PCH_CPT(dev_priv))
1988                         intel_encoder->enable = cpt_enable_hdmi;
1989                 else if (HAS_PCH_IBX(dev_priv))
1990                         intel_encoder->enable = ibx_enable_hdmi;
1991                 else
1992                         intel_encoder->enable = g4x_enable_hdmi;
1993         }
1994
1995         intel_encoder->type = INTEL_OUTPUT_HDMI;
1996         intel_encoder->port = port;
1997         if (IS_CHERRYVIEW(dev_priv)) {
1998                 if (port == PORT_D)
1999                         intel_encoder->crtc_mask = 1 << 2;
2000                 else
2001                         intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
2002         } else {
2003                 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
2004         }
2005         intel_encoder->cloneable = 1 << INTEL_OUTPUT_ANALOG;
2006         /*
2007          * BSpec is unclear about HDMI+HDMI cloning on g4x, but it seems
2008          * to work on real hardware. And since g4x can send infoframes to
2009          * only one port anyway, nothing is lost by allowing it.
2010          */
2011         if (IS_G4X(dev_priv))
2012                 intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
2013
2014         intel_dig_port->port = port;
2015         intel_dig_port->hdmi.hdmi_reg = hdmi_reg;
2016         intel_dig_port->dp.output_reg = INVALID_MMIO_REG;
2017         intel_dig_port->max_lanes = 4;
2018
2019         intel_hdmi_init_connector(intel_dig_port, intel_connector);
2020 }