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         bool ret;
 884
 885         power_domain = intel_display_port_power_domain(encoder);
 886         if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
 887                 return false;
 888
 889         ret = false;
 890
 891         tmp = I915_READ(intel_hdmi->hdmi_reg);
 892
 893         if (!(tmp & SDVO_ENABLE))
 894                 goto out;
 895
 896         if (HAS_PCH_CPT(dev))
 897                 *pipe = PORT_TO_PIPE_CPT(tmp);
 898         else if (IS_CHERRYVIEW(dev))
 899                 *pipe = SDVO_PORT_TO_PIPE_CHV(tmp);
 900         else
 901                 *pipe = PORT_TO_PIPE(tmp);
 902
 903         ret = true;
 904
 905 out:
 906         intel_display_power_put(dev_priv, power_domain);
 907
 908         return ret;
 909 }
 910
 911 static void intel_hdmi_get_config(struct intel_encoder *encoder,
 912                                   struct intel_crtc_state *pipe_config)
 913 {
 914         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 915         struct drm_device *dev = encoder->base.dev;
 916         struct drm_i915_private *dev_priv = dev->dev_private;
 917         u32 tmp, flags = 0;
 918         int dotclock;
 919
 920         tmp = I915_READ(intel_hdmi->hdmi_reg);
 921
 922         if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
 923                 flags |= DRM_MODE_FLAG_PHSYNC;
 924         else
 925                 flags |= DRM_MODE_FLAG_NHSYNC;
 926
 927         if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
 928                 flags |= DRM_MODE_FLAG_PVSYNC;
 929         else
 930                 flags |= DRM_MODE_FLAG_NVSYNC;
 931
 932         if (tmp & HDMI_MODE_SELECT_HDMI)
 933                 pipe_config->has_hdmi_sink = true;
 934
 935         if (intel_hdmi->infoframe_enabled(&encoder->base, pipe_config))
 936                 pipe_config->has_infoframe = true;
 937
 938         if (tmp & SDVO_AUDIO_ENABLE)
 939                 pipe_config->has_audio = true;
 940
 941         if (!HAS_PCH_SPLIT(dev) &&
 942             tmp & HDMI_COLOR_RANGE_16_235)
 943                 pipe_config->limited_color_range = true;
 944
 945         pipe_config->base.adjusted_mode.flags |= flags;
 946
 947         if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
 948                 dotclock = pipe_config->port_clock * 2 / 3;
 949         else
 950                 dotclock = pipe_config->port_clock;
 951
 952         if (pipe_config->pixel_multiplier)
 953                 dotclock /= pipe_config->pixel_multiplier;
 954
 955         if (HAS_PCH_SPLIT(dev_priv->dev))
 956                 ironlake_check_encoder_dotclock(pipe_config, dotclock);
 957
 958         pipe_config->base.adjusted_mode.crtc_clock = dotclock;
 959 }
 960
 961 static void intel_enable_hdmi_audio(struct intel_encoder *encoder)
 962 {
 963         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 964
 965         WARN_ON(!crtc->config->has_hdmi_sink);
 966         DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
 967                          pipe_name(crtc->pipe));
 968         intel_audio_codec_enable(encoder);
 969 }
 970
 971 static void g4x_enable_hdmi(struct intel_encoder *encoder)
 972 {
 973         struct drm_device *dev = encoder->base.dev;
 974         struct drm_i915_private *dev_priv = dev->dev_private;
 975         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 976         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 977         u32 temp;
 978
 979         temp = I915_READ(intel_hdmi->hdmi_reg);
 980
 981         temp |= SDVO_ENABLE;
 982         if (crtc->config->has_audio)
 983                 temp |= SDVO_AUDIO_ENABLE;
 984
 985         I915_WRITE(intel_hdmi->hdmi_reg, temp);
 986         POSTING_READ(intel_hdmi->hdmi_reg);
 987
 988         if (crtc->config->has_audio)
 989                 intel_enable_hdmi_audio(encoder);
 990 }
 991
 992 static void ibx_enable_hdmi(struct intel_encoder *encoder)
 993 {
 994         struct drm_device *dev = encoder->base.dev;
 995         struct drm_i915_private *dev_priv = dev->dev_private;
 996         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 997         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 998         u32 temp;
 999
1000         temp = I915_READ(intel_hdmi->hdmi_reg);
1001
1002         temp |= SDVO_ENABLE;
1003         if (crtc->config->has_audio)
1004                 temp |= SDVO_AUDIO_ENABLE;
1005
1006         /*
1007          * HW workaround, need to write this twice for issue
1008          * that may result in first write getting masked.
1009          */
1010         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1011         POSTING_READ(intel_hdmi->hdmi_reg);
1012         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1013         POSTING_READ(intel_hdmi->hdmi_reg);
1014
1015         /*
1016          * HW workaround, need to toggle enable bit off and on
1017          * for 12bpc with pixel repeat.
1018          *
1019          * FIXME: BSpec says this should be done at the end of
1020          * of the modeset sequence, so not sure if this isn't too soon.
1021          */
1022         if (crtc->config->pipe_bpp > 24 &&
1023             crtc->config->pixel_multiplier > 1) {
1024                 I915_WRITE(intel_hdmi->hdmi_reg, temp & ~SDVO_ENABLE);
1025                 POSTING_READ(intel_hdmi->hdmi_reg);
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         if (crtc->config->has_audio)
1038                 intel_enable_hdmi_audio(encoder);
1039 }
1040
1041 static void cpt_enable_hdmi(struct intel_encoder *encoder)
1042 {
1043         struct drm_device *dev = encoder->base.dev;
1044         struct drm_i915_private *dev_priv = dev->dev_private;
1045         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1046         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1047         enum pipe pipe = crtc->pipe;
1048         u32 temp;
1049
1050         temp = I915_READ(intel_hdmi->hdmi_reg);
1051
1052         temp |= SDVO_ENABLE;
1053         if (crtc->config->has_audio)
1054                 temp |= SDVO_AUDIO_ENABLE;
1055
1056         /*
1057          * WaEnableHDMI8bpcBefore12bpc:snb,ivb
1058          *
1059          * The procedure for 12bpc is as follows:
1060          * 1. disable HDMI clock gating
1061          * 2. enable HDMI with 8bpc
1062          * 3. enable HDMI with 12bpc
1063          * 4. enable HDMI clock gating
1064          */
1065
1066         if (crtc->config->pipe_bpp > 24) {
1067                 I915_WRITE(TRANS_CHICKEN1(pipe),
1068                            I915_READ(TRANS_CHICKEN1(pipe)) |
1069                            TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
1070
1071                 temp &= ~SDVO_COLOR_FORMAT_MASK;
1072                 temp |= SDVO_COLOR_FORMAT_8bpc;
1073         }
1074
1075         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1076         POSTING_READ(intel_hdmi->hdmi_reg);
1077
1078         if (crtc->config->pipe_bpp > 24) {
1079                 temp &= ~SDVO_COLOR_FORMAT_MASK;
1080                 temp |= HDMI_COLOR_FORMAT_12bpc;
1081
1082                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1083                 POSTING_READ(intel_hdmi->hdmi_reg);
1084
1085                 I915_WRITE(TRANS_CHICKEN1(pipe),
1086                            I915_READ(TRANS_CHICKEN1(pipe)) &
1087                            ~TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
1088         }
1089
1090         if (crtc->config->has_audio)
1091                 intel_enable_hdmi_audio(encoder);
1092 }
1093
1094 static void vlv_enable_hdmi(struct intel_encoder *encoder)
1095 {
1096 }
1097
1098 static void intel_disable_hdmi(struct intel_encoder *encoder)
1099 {
1100         struct drm_device *dev = encoder->base.dev;
1101         struct drm_i915_private *dev_priv = dev->dev_private;
1102         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1103         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1104         u32 temp;
1105
1106         temp = I915_READ(intel_hdmi->hdmi_reg);
1107
1108         temp &= ~(SDVO_ENABLE | SDVO_AUDIO_ENABLE);
1109         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1110         POSTING_READ(intel_hdmi->hdmi_reg);
1111
1112         /*
1113          * HW workaround for IBX, we need to move the port
1114          * to transcoder A after disabling it to allow the
1115          * matching DP port to be enabled on transcoder A.
1116          */
1117         if (HAS_PCH_IBX(dev) && crtc->pipe == PIPE_B) {
1118                 /*
1119                  * We get CPU/PCH FIFO underruns on the other pipe when
1120                  * doing the workaround. Sweep them under the rug.
1121                  */
1122                 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
1123                 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
1124
1125                 temp &= ~SDVO_PIPE_B_SELECT;
1126                 temp |= SDVO_ENABLE;
1127                 /*
1128                  * HW workaround, need to write this twice for issue
1129                  * that may result in first write getting masked.
1130                  */
1131                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1132                 POSTING_READ(intel_hdmi->hdmi_reg);
1133                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1134                 POSTING_READ(intel_hdmi->hdmi_reg);
1135
1136                 temp &= ~SDVO_ENABLE;
1137                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1138                 POSTING_READ(intel_hdmi->hdmi_reg);
1139
1140                 intel_wait_for_vblank_if_active(dev_priv->dev, PIPE_A);
1141                 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
1142                 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
1143         }
1144
1145         intel_hdmi->set_infoframes(&encoder->base, false, NULL);
1146 }
1147
1148 static void g4x_disable_hdmi(struct intel_encoder *encoder)
1149 {
1150         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1151
1152         if (crtc->config->has_audio)
1153                 intel_audio_codec_disable(encoder);
1154
1155         intel_disable_hdmi(encoder);
1156 }
1157
1158 static void pch_disable_hdmi(struct intel_encoder *encoder)
1159 {
1160         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1161
1162         if (crtc->config->has_audio)
1163                 intel_audio_codec_disable(encoder);
1164 }
1165
1166 static void pch_post_disable_hdmi(struct intel_encoder *encoder)
1167 {
1168         intel_disable_hdmi(encoder);
1169 }
1170
1171 static int hdmi_port_clock_limit(struct intel_hdmi *hdmi, bool respect_dvi_limit)
1172 {
1173         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1174
1175         if ((respect_dvi_limit && !hdmi->has_hdmi_sink) || IS_G4X(dev))
1176                 return 165000;
1177         else if (IS_HASWELL(dev) || INTEL_INFO(dev)->gen >= 8)
1178                 return 300000;
1179         else
1180                 return 225000;
1181 }
1182
1183 static enum drm_mode_status
1184 hdmi_port_clock_valid(struct intel_hdmi *hdmi,
1185                       int clock, bool respect_dvi_limit)
1186 {
1187         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1188
1189         if (clock < 25000)
1190                 return MODE_CLOCK_LOW;
1191         if (clock > hdmi_port_clock_limit(hdmi, respect_dvi_limit))
1192                 return MODE_CLOCK_HIGH;
1193
1194         /* BXT DPLL can't generate 223-240 MHz */
1195         if (IS_BROXTON(dev) && clock > 223333 && clock < 240000)
1196                 return MODE_CLOCK_RANGE;
1197
1198         /* CHV DPLL can't generate 216-240 MHz */
1199         if (IS_CHERRYVIEW(dev) && clock > 216000 && clock < 240000)
1200                 return MODE_CLOCK_RANGE;
1201
1202         return MODE_OK;
1203 }
1204
1205 static enum drm_mode_status
1206 intel_hdmi_mode_valid(struct drm_connector *connector,
1207                       struct drm_display_mode *mode)
1208 {
1209         struct intel_hdmi *hdmi = intel_attached_hdmi(connector);
1210         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1211         enum drm_mode_status status;
1212         int clock;
1213         int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
1214
1215         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
1216                 return MODE_NO_DBLESCAN;
1217
1218         clock = mode->clock;
1219
1220         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1221                 clock *= 2;
1222
1223         if (clock > max_dotclk)
1224                 return MODE_CLOCK_HIGH;
1225
1226         if (mode->flags & DRM_MODE_FLAG_DBLCLK)
1227                 clock *= 2;
1228
1229         /* check if we can do 8bpc */
1230         status = hdmi_port_clock_valid(hdmi, clock, true);
1231
1232         /* if we can't do 8bpc we may still be able to do 12bpc */
1233         if (!HAS_GMCH_DISPLAY(dev) && status != MODE_OK)
1234                 status = hdmi_port_clock_valid(hdmi, clock * 3 / 2, true);
1235
1236         return status;
1237 }
1238
1239 static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state)
1240 {
1241         struct drm_device *dev = crtc_state->base.crtc->dev;
1242         struct drm_atomic_state *state;
1243         struct intel_encoder *encoder;
1244         struct drm_connector *connector;
1245         struct drm_connector_state *connector_state;
1246         int count = 0, count_hdmi = 0;
1247         int i;
1248
1249         if (HAS_GMCH_DISPLAY(dev))
1250                 return false;
1251
1252         state = crtc_state->base.state;
1253
1254         for_each_connector_in_state(state, connector, connector_state, i) {
1255                 if (connector_state->crtc != crtc_state->base.crtc)
1256                         continue;
1257
1258                 encoder = to_intel_encoder(connector_state->best_encoder);
1259
1260                 count_hdmi += encoder->type == INTEL_OUTPUT_HDMI;
1261                 count++;
1262         }
1263
1264         /*
1265          * HDMI 12bpc affects the clocks, so it's only possible
1266          * when not cloning with other encoder types.
1267          */
1268         return count_hdmi > 0 && count_hdmi == count;
1269 }
1270
1271 bool intel_hdmi_compute_config(struct intel_encoder *encoder,
1272                                struct intel_crtc_state *pipe_config)
1273 {
1274         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1275         struct drm_device *dev = encoder->base.dev;
1276         struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
1277         int clock_8bpc = pipe_config->base.adjusted_mode.crtc_clock;
1278         int clock_12bpc = clock_8bpc * 3 / 2;
1279         int desired_bpp;
1280
1281         pipe_config->has_hdmi_sink = intel_hdmi->has_hdmi_sink;
1282
1283         if (pipe_config->has_hdmi_sink)
1284                 pipe_config->has_infoframe = true;
1285
1286         if (intel_hdmi->color_range_auto) {
1287                 /* See CEA-861-E - 5.1 Default Encoding Parameters */
1288                 pipe_config->limited_color_range =
1289                         pipe_config->has_hdmi_sink &&
1290                         drm_match_cea_mode(adjusted_mode) > 1;
1291         } else {
1292                 pipe_config->limited_color_range =
1293                         intel_hdmi->limited_color_range;
1294         }
1295
1296         if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) {
1297                 pipe_config->pixel_multiplier = 2;
1298                 clock_8bpc *= 2;
1299                 clock_12bpc *= 2;
1300         }
1301
1302         if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev))
1303                 pipe_config->has_pch_encoder = true;
1304
1305         if (pipe_config->has_hdmi_sink && intel_hdmi->has_audio)
1306                 pipe_config->has_audio = true;
1307
1308         /*
1309          * HDMI is either 12 or 8, so if the display lets 10bpc sneak
1310          * through, clamp it down. Note that g4x/vlv don't support 12bpc hdmi
1311          * outputs. We also need to check that the higher clock still fits
1312          * within limits.
1313          */
1314         if (pipe_config->pipe_bpp > 8*3 && pipe_config->has_hdmi_sink &&
1315             hdmi_port_clock_valid(intel_hdmi, clock_12bpc, false) == MODE_OK &&
1316             hdmi_12bpc_possible(pipe_config)) {
1317                 DRM_DEBUG_KMS("picking bpc to 12 for HDMI output\n");
1318                 desired_bpp = 12*3;
1319
1320                 /* Need to adjust the port link by 1.5x for 12bpc. */
1321                 pipe_config->port_clock = clock_12bpc;
1322         } else {
1323                 DRM_DEBUG_KMS("picking bpc to 8 for HDMI output\n");
1324                 desired_bpp = 8*3;
1325
1326                 pipe_config->port_clock = clock_8bpc;
1327         }
1328
1329         if (!pipe_config->bw_constrained) {
1330                 DRM_DEBUG_KMS("forcing pipe bpc to %i for HDMI\n", desired_bpp);
1331                 pipe_config->pipe_bpp = desired_bpp;
1332         }
1333
1334         if (hdmi_port_clock_valid(intel_hdmi, pipe_config->port_clock,
1335                                   false) != MODE_OK) {
1336                 DRM_DEBUG_KMS("unsupported HDMI clock, rejecting mode\n");
1337                 return false;
1338         }
1339
1340         /* Set user selected PAR to incoming mode's member */
1341         adjusted_mode->picture_aspect_ratio = intel_hdmi->aspect_ratio;
1342
1343         return true;
1344 }
1345
1346 static void
1347 intel_hdmi_unset_edid(struct drm_connector *connector)
1348 {
1349         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1350
1351         intel_hdmi->has_hdmi_sink = false;
1352         intel_hdmi->has_audio = false;
1353         intel_hdmi->rgb_quant_range_selectable = false;
1354
1355         kfree(to_intel_connector(connector)->detect_edid);
1356         to_intel_connector(connector)->detect_edid = NULL;
1357 }
1358
1359 static bool
1360 intel_hdmi_set_edid(struct drm_connector *connector, bool force)
1361 {
1362         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1363         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1364         struct edid *edid = NULL;
1365         bool connected = false;
1366
1367         if (force) {
1368                 intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
1369
1370                 edid = drm_get_edid(connector,
1371                                     intel_gmbus_get_adapter(dev_priv,
1372                                     intel_hdmi->ddc_bus));
1373
1374                 intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
1375         }
1376
1377         to_intel_connector(connector)->detect_edid = edid;
1378         if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
1379                 intel_hdmi->rgb_quant_range_selectable =
1380                         drm_rgb_quant_range_selectable(edid);
1381
1382                 intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
1383                 if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
1384                         intel_hdmi->has_audio =
1385                                 intel_hdmi->force_audio == HDMI_AUDIO_ON;
1386
1387                 if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
1388                         intel_hdmi->has_hdmi_sink =
1389                                 drm_detect_hdmi_monitor(edid);
1390
1391                 connected = true;
1392         }
1393
1394         return connected;
1395 }
1396
1397 static enum drm_connector_status
1398 intel_hdmi_detect(struct drm_connector *connector, bool force)
1399 {
1400         enum drm_connector_status status;
1401         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1402         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1403         bool live_status = false;
1404         unsigned int try;
1405
1406         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1407                       connector->base.id, connector->name);
1408
1409         intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
1410
1411         for (try = 0; !live_status && try < 9; try++) {
1412                 if (try)
1413                         msleep(10);
1414                 live_status = intel_digital_port_connected(dev_priv,
1415                                 hdmi_to_dig_port(intel_hdmi));
1416         }
1417
1418         if (!live_status)
1419                 DRM_DEBUG_KMS("Live status not up!");
1420
1421         intel_hdmi_unset_edid(connector);
1422
1423         if (intel_hdmi_set_edid(connector, live_status)) {
1424                 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1425
1426                 hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
1427                 status = connector_status_connected;
1428         } else
1429                 status = connector_status_disconnected;
1430
1431         intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
1432
1433         return status;
1434 }
1435
1436 static void
1437 intel_hdmi_force(struct drm_connector *connector)
1438 {
1439         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1440
1441         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1442                       connector->base.id, connector->name);
1443
1444         intel_hdmi_unset_edid(connector);
1445
1446         if (connector->status != connector_status_connected)
1447                 return;
1448
1449         intel_hdmi_set_edid(connector, true);
1450         hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
1451 }
1452
1453 static int intel_hdmi_get_modes(struct drm_connector *connector)
1454 {
1455         struct edid *edid;
1456
1457         edid = to_intel_connector(connector)->detect_edid;
1458         if (edid == NULL)
1459                 return 0;
1460
1461         return intel_connector_update_modes(connector, edid);
1462 }
1463
1464 static bool
1465 intel_hdmi_detect_audio(struct drm_connector *connector)
1466 {
1467         bool has_audio = false;
1468         struct edid *edid;
1469
1470         edid = to_intel_connector(connector)->detect_edid;
1471         if (edid && edid->input & DRM_EDID_INPUT_DIGITAL)
1472                 has_audio = drm_detect_monitor_audio(edid);
1473
1474         return has_audio;
1475 }
1476
1477 static int
1478 intel_hdmi_set_property(struct drm_connector *connector,
1479                         struct drm_property *property,
1480                         uint64_t val)
1481 {
1482         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1483         struct intel_digital_port *intel_dig_port =
1484                 hdmi_to_dig_port(intel_hdmi);
1485         struct drm_i915_private *dev_priv = connector->dev->dev_private;
1486         int ret;
1487
1488         ret = drm_object_property_set_value(&connector->base, property, val);
1489         if (ret)
1490                 return ret;
1491
1492         if (property == dev_priv->force_audio_property) {
1493                 enum hdmi_force_audio i = val;
1494                 bool has_audio;
1495
1496                 if (i == intel_hdmi->force_audio)
1497                         return 0;
1498
1499                 intel_hdmi->force_audio = i;
1500
1501                 if (i == HDMI_AUDIO_AUTO)
1502                         has_audio = intel_hdmi_detect_audio(connector);
1503                 else
1504                         has_audio = (i == HDMI_AUDIO_ON);
1505
1506                 if (i == HDMI_AUDIO_OFF_DVI)
1507                         intel_hdmi->has_hdmi_sink = 0;
1508
1509                 intel_hdmi->has_audio = has_audio;
1510                 goto done;
1511         }
1512
1513         if (property == dev_priv->broadcast_rgb_property) {
1514                 bool old_auto = intel_hdmi->color_range_auto;
1515                 bool old_range = intel_hdmi->limited_color_range;
1516
1517                 switch (val) {
1518                 case INTEL_BROADCAST_RGB_AUTO:
1519                         intel_hdmi->color_range_auto = true;
1520                         break;
1521                 case INTEL_BROADCAST_RGB_FULL:
1522                         intel_hdmi->color_range_auto = false;
1523                         intel_hdmi->limited_color_range = false;
1524                         break;
1525                 case INTEL_BROADCAST_RGB_LIMITED:
1526                         intel_hdmi->color_range_auto = false;
1527                         intel_hdmi->limited_color_range = true;
1528                         break;
1529                 default:
1530                         return -EINVAL;
1531                 }
1532
1533                 if (old_auto == intel_hdmi->color_range_auto &&
1534                     old_range == intel_hdmi->limited_color_range)
1535                         return 0;
1536
1537                 goto done;
1538         }
1539
1540         if (property == connector->dev->mode_config.aspect_ratio_property) {
1541                 switch (val) {
1542                 case DRM_MODE_PICTURE_ASPECT_NONE:
1543                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
1544                         break;
1545                 case DRM_MODE_PICTURE_ASPECT_4_3:
1546                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_4_3;
1547                         break;
1548                 case DRM_MODE_PICTURE_ASPECT_16_9:
1549                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_16_9;
1550                         break;
1551                 default:
1552                         return -EINVAL;
1553                 }
1554                 goto done;
1555         }
1556
1557         return -EINVAL;
1558
1559 done:
1560         if (intel_dig_port->base.base.crtc)
1561                 intel_crtc_restore_mode(intel_dig_port->base.base.crtc);
1562
1563         return 0;
1564 }
1565
1566 static void intel_hdmi_pre_enable(struct intel_encoder *encoder)
1567 {
1568         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1569         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
1570         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1571
1572         intel_hdmi_prepare(encoder);
1573
1574         intel_hdmi->set_infoframes(&encoder->base,
1575                                    intel_crtc->config->has_hdmi_sink,
1576                                    adjusted_mode);
1577 }
1578
1579 static void vlv_hdmi_pre_enable(struct intel_encoder *encoder)
1580 {
1581         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1582         struct intel_hdmi *intel_hdmi = &dport->hdmi;
1583         struct drm_device *dev = encoder->base.dev;
1584         struct drm_i915_private *dev_priv = dev->dev_private;
1585         struct intel_crtc *intel_crtc =
1586                 to_intel_crtc(encoder->base.crtc);
1587         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1588         enum dpio_channel port = vlv_dport_to_channel(dport);
1589         int pipe = intel_crtc->pipe;
1590         u32 val;
1591
1592         /* Enable clock channels for this port */
1593         mutex_lock(&dev_priv->sb_lock);
1594         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port));
1595         val = 0;
1596         if (pipe)
1597                 val |= (1<<21);
1598         else
1599                 val &= ~(1<<21);
1600         val |= 0x001000c4;
1601         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val);
1602
1603         /* HDMI 1.0V-2dB */
1604         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0);
1605         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), 0x2b245f5f);
1606         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), 0x5578b83a);
1607         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0c782040);
1608         vlv_dpio_write(dev_priv, pipe, VLV_TX3_DW4(port), 0x2b247878);
1609         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000);
1610         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), 0x00002000);
1611         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), DPIO_TX_OCALINIT_EN);
1612
1613         /* Program lane clock */
1614         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018);
1615         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888);
1616         mutex_unlock(&dev_priv->sb_lock);
1617
1618         intel_hdmi->set_infoframes(&encoder->base,
1619                                    intel_crtc->config->has_hdmi_sink,
1620                                    adjusted_mode);
1621
1622         g4x_enable_hdmi(encoder);
1623
1624         vlv_wait_port_ready(dev_priv, dport, 0x0);
1625 }
1626
1627 static void vlv_hdmi_pre_pll_enable(struct intel_encoder *encoder)
1628 {
1629         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1630         struct drm_device *dev = encoder->base.dev;
1631         struct drm_i915_private *dev_priv = dev->dev_private;
1632         struct intel_crtc *intel_crtc =
1633                 to_intel_crtc(encoder->base.crtc);
1634         enum dpio_channel port = vlv_dport_to_channel(dport);
1635         int pipe = intel_crtc->pipe;
1636
1637         intel_hdmi_prepare(encoder);
1638
1639         /* Program Tx lane resets to default */
1640         mutex_lock(&dev_priv->sb_lock);
1641         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port),
1642                          DPIO_PCS_TX_LANE2_RESET |
1643                          DPIO_PCS_TX_LANE1_RESET);
1644         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port),
1645                          DPIO_PCS_CLK_CRI_RXEB_EIOS_EN |
1646                          DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN |
1647                          (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) |
1648                          DPIO_PCS_CLK_SOFT_RESET);
1649
1650         /* Fix up inter-pair skew failure */
1651         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00);
1652         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500);
1653         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000);
1654
1655         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), 0x00002000);
1656         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), DPIO_TX_OCALINIT_EN);
1657         mutex_unlock(&dev_priv->sb_lock);
1658 }
1659
1660 static void chv_data_lane_soft_reset(struct intel_encoder *encoder,
1661                                      bool reset)
1662 {
1663         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1664         enum dpio_channel ch = vlv_dport_to_channel(enc_to_dig_port(&encoder->base));
1665         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1666         enum pipe pipe = crtc->pipe;
1667         uint32_t val;
1668
1669         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch));
1670         if (reset)
1671                 val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
1672         else
1673                 val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET;
1674         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val);
1675
1676         if (crtc->config->lane_count > 2) {
1677                 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch));
1678                 if (reset)
1679                         val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
1680                 else
1681                         val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET;
1682                 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val);
1683         }
1684
1685         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch));
1686         val |= CHV_PCS_REQ_SOFTRESET_EN;
1687         if (reset)
1688                 val &= ~DPIO_PCS_CLK_SOFT_RESET;
1689         else
1690                 val |= DPIO_PCS_CLK_SOFT_RESET;
1691         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val);
1692
1693         if (crtc->config->lane_count > 2) {
1694                 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch));
1695                 val |= CHV_PCS_REQ_SOFTRESET_EN;
1696                 if (reset)
1697                         val &= ~DPIO_PCS_CLK_SOFT_RESET;
1698                 else
1699                         val |= DPIO_PCS_CLK_SOFT_RESET;
1700                 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val);
1701         }
1702 }
1703
1704 static void chv_hdmi_pre_pll_enable(struct intel_encoder *encoder)
1705 {
1706         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1707         struct drm_device *dev = encoder->base.dev;
1708         struct drm_i915_private *dev_priv = dev->dev_private;
1709         struct intel_crtc *intel_crtc =
1710                 to_intel_crtc(encoder->base.crtc);
1711         enum dpio_channel ch = vlv_dport_to_channel(dport);
1712         enum pipe pipe = intel_crtc->pipe;
1713         u32 val;
1714
1715         intel_hdmi_prepare(encoder);
1716
1717         /*
1718          * Must trick the second common lane into life.
1719          * Otherwise we can't even access the PLL.
1720          */
1721         if (ch == DPIO_CH0 && pipe == PIPE_B)
1722                 dport->release_cl2_override =
1723                         !chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, true);
1724
1725         chv_phy_powergate_lanes(encoder, true, 0x0);
1726
1727         mutex_lock(&dev_priv->sb_lock);
1728
1729         /* Assert data lane reset */
1730         chv_data_lane_soft_reset(encoder, true);
1731
1732         /* program left/right clock distribution */
1733         if (pipe != PIPE_B) {
1734                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
1735                 val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
1736                 if (ch == DPIO_CH0)
1737                         val |= CHV_BUFLEFTENA1_FORCE;
1738                 if (ch == DPIO_CH1)
1739                         val |= CHV_BUFRIGHTENA1_FORCE;
1740                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
1741         } else {
1742                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
1743                 val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
1744                 if (ch == DPIO_CH0)
1745                         val |= CHV_BUFLEFTENA2_FORCE;
1746                 if (ch == DPIO_CH1)
1747                         val |= CHV_BUFRIGHTENA2_FORCE;
1748                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
1749         }
1750
1751         /* program clock channel usage */
1752         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch));
1753         val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;
1754         if (pipe != PIPE_B)
1755                 val &= ~CHV_PCS_USEDCLKCHANNEL;
1756         else
1757                 val |= CHV_PCS_USEDCLKCHANNEL;
1758         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val);
1759
1760         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch));
1761         val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;
1762         if (pipe != PIPE_B)
1763                 val &= ~CHV_PCS_USEDCLKCHANNEL;
1764         else
1765                 val |= CHV_PCS_USEDCLKCHANNEL;
1766         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val);
1767
1768         /*
1769          * This a a bit weird since generally CL
1770          * matches the pipe, but here we need to
1771          * pick the CL based on the port.
1772          */
1773         val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch));
1774         if (pipe != PIPE_B)
1775                 val &= ~CHV_CMN_USEDCLKCHANNEL;
1776         else
1777                 val |= CHV_CMN_USEDCLKCHANNEL;
1778         vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val);
1779
1780         mutex_unlock(&dev_priv->sb_lock);
1781 }
1782
1783 static void chv_hdmi_post_pll_disable(struct intel_encoder *encoder)
1784 {
1785         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1786         enum pipe pipe = to_intel_crtc(encoder->base.crtc)->pipe;
1787         u32 val;
1788
1789         mutex_lock(&dev_priv->sb_lock);
1790
1791         /* disable left/right clock distribution */
1792         if (pipe != PIPE_B) {
1793                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
1794                 val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
1795                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
1796         } else {
1797                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
1798                 val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
1799                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
1800         }
1801
1802         mutex_unlock(&dev_priv->sb_lock);
1803
1804         /*
1805          * Leave the power down bit cleared for at least one
1806          * lane so that chv_powergate_phy_ch() will power
1807          * on something when the channel is otherwise unused.
1808          * When the port is off and the override is removed
1809          * the lanes power down anyway, so otherwise it doesn't
1810          * really matter what the state of power down bits is
1811          * after this.
1812          */
1813         chv_phy_powergate_lanes(encoder, false, 0x0);
1814 }
1815
1816 static void vlv_hdmi_post_disable(struct intel_encoder *encoder)
1817 {
1818         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1819         struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
1820         struct intel_crtc *intel_crtc =
1821                 to_intel_crtc(encoder->base.crtc);
1822         enum dpio_channel port = vlv_dport_to_channel(dport);
1823         int pipe = intel_crtc->pipe;
1824
1825         /* Reset lanes to avoid HDMI flicker (VLV w/a) */
1826         mutex_lock(&dev_priv->sb_lock);
1827         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), 0x00000000);
1828         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), 0x00e00060);
1829         mutex_unlock(&dev_priv->sb_lock);
1830 }
1831
1832 static void chv_hdmi_post_disable(struct intel_encoder *encoder)
1833 {
1834         struct drm_device *dev = encoder->base.dev;
1835         struct drm_i915_private *dev_priv = dev->dev_private;
1836
1837         mutex_lock(&dev_priv->sb_lock);
1838
1839         /* Assert data lane reset */
1840         chv_data_lane_soft_reset(encoder, true);
1841
1842         mutex_unlock(&dev_priv->sb_lock);
1843 }
1844
1845 static void chv_hdmi_pre_enable(struct intel_encoder *encoder)
1846 {
1847         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1848         struct intel_hdmi *intel_hdmi = &dport->hdmi;
1849         struct drm_device *dev = encoder->base.dev;
1850         struct drm_i915_private *dev_priv = dev->dev_private;
1851         struct intel_crtc *intel_crtc =
1852                 to_intel_crtc(encoder->base.crtc);
1853         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1854         enum dpio_channel ch = vlv_dport_to_channel(dport);
1855         int pipe = intel_crtc->pipe;
1856         int data, i, stagger;
1857         u32 val;
1858
1859         mutex_lock(&dev_priv->sb_lock);
1860
1861         /* allow hardware to manage TX FIFO reset source */
1862         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch));
1863         val &= ~DPIO_LANEDESKEW_STRAP_OVRD;
1864         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val);
1865
1866         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch));
1867         val &= ~DPIO_LANEDESKEW_STRAP_OVRD;
1868         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val);
1869
1870         /* Program Tx latency optimal setting */
1871         for (i = 0; i < 4; i++) {
1872                 /* Set the upar bit */
1873                 data = (i == 1) ? 0x0 : 0x1;
1874                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i),
1875                                 data << DPIO_UPAR_SHIFT);
1876         }
1877
1878         /* Data lane stagger programming */
1879         if (intel_crtc->config->port_clock > 270000)
1880                 stagger = 0x18;
1881         else if (intel_crtc->config->port_clock > 135000)
1882                 stagger = 0xd;
1883         else if (intel_crtc->config->port_clock > 67500)
1884                 stagger = 0x7;
1885         else if (intel_crtc->config->port_clock > 33750)
1886                 stagger = 0x4;
1887         else
1888                 stagger = 0x2;
1889
1890         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch));
1891         val |= DPIO_TX2_STAGGER_MASK(0x1f);
1892         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val);
1893
1894         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch));
1895         val |= DPIO_TX2_STAGGER_MASK(0x1f);
1896         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val);
1897
1898         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW12(ch),
1899                        DPIO_LANESTAGGER_STRAP(stagger) |
1900                        DPIO_LANESTAGGER_STRAP_OVRD |
1901                        DPIO_TX1_STAGGER_MASK(0x1f) |
1902                        DPIO_TX1_STAGGER_MULT(6) |
1903                        DPIO_TX2_STAGGER_MULT(0));
1904
1905         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW12(ch),
1906                        DPIO_LANESTAGGER_STRAP(stagger) |
1907                        DPIO_LANESTAGGER_STRAP_OVRD |
1908                        DPIO_TX1_STAGGER_MASK(0x1f) |
1909                        DPIO_TX1_STAGGER_MULT(7) |
1910                        DPIO_TX2_STAGGER_MULT(5));
1911
1912         /* Deassert data lane reset */
1913         chv_data_lane_soft_reset(encoder, false);
1914
1915         /* Clear calc init */
1916         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
1917         val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
1918         val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK);
1919         val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5;
1920         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
1921
1922         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
1923         val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
1924         val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK);
1925         val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5;
1926         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
1927
1928         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch));
1929         val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK);
1930         val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000;
1931         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val);
1932
1933         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch));
1934         val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK);
1935         val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000;
1936         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val);
1937
1938         /* FIXME: Program the support xxx V-dB */
1939         /* Use 800mV-0dB */
1940         for (i = 0; i < 4; i++) {
1941                 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i));
1942                 val &= ~DPIO_SWING_DEEMPH9P5_MASK;
1943                 val |= 128 << DPIO_SWING_DEEMPH9P5_SHIFT;
1944                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val);
1945         }
1946
1947         for (i = 0; i < 4; i++) {
1948                 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i));
1949
1950                 val &= ~DPIO_SWING_MARGIN000_MASK;
1951                 val |= 102 << DPIO_SWING_MARGIN000_SHIFT;
1952
1953                 /*
1954                  * Supposedly this value shouldn't matter when unique transition
1955                  * scale is disabled, but in fact it does matter. Let's just
1956                  * always program the same value and hope it's OK.
1957                  */
1958                 val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT);
1959                 val |= 0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT;
1960
1961                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val);
1962         }
1963
1964         /*
1965          * The document said it needs to set bit 27 for ch0 and bit 26
1966          * for ch1. Might be a typo in the doc.
1967          * For now, for this unique transition scale selection, set bit
1968          * 27 for ch0 and ch1.
1969          */
1970         for (i = 0; i < 4; i++) {
1971                 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i));
1972                 val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN;
1973                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val);
1974         }
1975
1976         /* Start swing calculation */
1977         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
1978         val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
1979         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
1980
1981         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
1982         val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
1983         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
1984
1985         mutex_unlock(&dev_priv->sb_lock);
1986
1987         intel_hdmi->set_infoframes(&encoder->base,
1988                                    intel_crtc->config->has_hdmi_sink,
1989                                    adjusted_mode);
1990
1991         g4x_enable_hdmi(encoder);
1992
1993         vlv_wait_port_ready(dev_priv, dport, 0x0);
1994
1995         /* Second common lane will stay alive on its own now */
1996         if (dport->release_cl2_override) {
1997                 chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, false);
1998                 dport->release_cl2_override = false;
1999         }
2000 }
2001
2002 static void intel_hdmi_destroy(struct drm_connector *connector)
2003 {
2004         kfree(to_intel_connector(connector)->detect_edid);
2005         drm_connector_cleanup(connector);
2006         kfree(connector);
2007 }
2008
2009 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
2010         .dpms = drm_atomic_helper_connector_dpms,
2011         .detect = intel_hdmi_detect,
2012         .force = intel_hdmi_force,
2013         .fill_modes = drm_helper_probe_single_connector_modes,
2014         .set_property = intel_hdmi_set_property,
2015         .atomic_get_property = intel_connector_atomic_get_property,
2016         .destroy = intel_hdmi_destroy,
2017         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
2018         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
2019 };
2020
2021 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
2022         .get_modes = intel_hdmi_get_modes,
2023         .mode_valid = intel_hdmi_mode_valid,
2024         .best_encoder = intel_best_encoder,
2025 };
2026
2027 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
2028         .destroy = intel_encoder_destroy,
2029 };
2030
2031 static void
2032 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
2033 {
2034         intel_attach_force_audio_property(connector);
2035         intel_attach_broadcast_rgb_property(connector);
2036         intel_hdmi->color_range_auto = true;
2037         intel_attach_aspect_ratio_property(connector);
2038         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
2039 }
2040
2041 void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
2042                                struct intel_connector *intel_connector)
2043 {
2044         struct drm_connector *connector = &intel_connector->base;
2045         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
2046         struct intel_encoder *intel_encoder = &intel_dig_port->base;
2047         struct drm_device *dev = intel_encoder->base.dev;
2048         struct drm_i915_private *dev_priv = dev->dev_private;
2049         enum port port = intel_dig_port->port;
2050         uint8_t alternate_ddc_pin;
2051
2052         if (WARN(intel_dig_port->max_lanes < 4,
2053                  "Not enough lanes (%d) for HDMI on port %c\n",
2054                  intel_dig_port->max_lanes, port_name(port)))
2055                 return;
2056
2057         drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
2058                            DRM_MODE_CONNECTOR_HDMIA);
2059         drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
2060
2061         connector->interlace_allowed = 1;
2062         connector->doublescan_allowed = 0;
2063         connector->stereo_allowed = 1;
2064
2065         switch (port) {
2066         case PORT_B:
2067                 if (IS_BROXTON(dev_priv))
2068                         intel_hdmi->ddc_bus = GMBUS_PIN_1_BXT;
2069                 else
2070                         intel_hdmi->ddc_bus = GMBUS_PIN_DPB;
2071                 /*
2072                  * On BXT A0/A1, sw needs to activate DDIA HPD logic and
2073                  * interrupts to check the external panel connection.
2074                  */
2075                 if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
2076                         intel_encoder->hpd_pin = HPD_PORT_A;
2077                 else
2078                         intel_encoder->hpd_pin = HPD_PORT_B;
2079                 break;
2080         case PORT_C:
2081                 if (IS_BROXTON(dev_priv))
2082                         intel_hdmi->ddc_bus = GMBUS_PIN_2_BXT;
2083                 else
2084                         intel_hdmi->ddc_bus = GMBUS_PIN_DPC;
2085                 intel_encoder->hpd_pin = HPD_PORT_C;
2086                 break;
2087         case PORT_D:
2088                 if (WARN_ON(IS_BROXTON(dev_priv)))
2089                         intel_hdmi->ddc_bus = GMBUS_PIN_DISABLED;
2090                 else if (IS_CHERRYVIEW(dev_priv))
2091                         intel_hdmi->ddc_bus = GMBUS_PIN_DPD_CHV;
2092                 else
2093                         intel_hdmi->ddc_bus = GMBUS_PIN_DPD;
2094                 intel_encoder->hpd_pin = HPD_PORT_D;
2095                 break;
2096         case PORT_E:
2097                 /* On SKL PORT E doesn't have seperate GMBUS pin
2098                  *  We rely on VBT to set a proper alternate GMBUS pin. */
2099                 alternate_ddc_pin =
2100                         dev_priv->vbt.ddi_port_info[PORT_E].alternate_ddc_pin;
2101                 switch (alternate_ddc_pin) {
2102                 case DDC_PIN_B:
2103                         intel_hdmi->ddc_bus = GMBUS_PIN_DPB;
2104                         break;
2105                 case DDC_PIN_C:
2106                         intel_hdmi->ddc_bus = GMBUS_PIN_DPC;
2107                         break;
2108                 case DDC_PIN_D:
2109                         intel_hdmi->ddc_bus = GMBUS_PIN_DPD;
2110                         break;
2111                 default:
2112                         MISSING_CASE(alternate_ddc_pin);
2113                 }
2114                 intel_encoder->hpd_pin = HPD_PORT_E;
2115                 break;
2116         case PORT_A:
2117                 intel_encoder->hpd_pin = HPD_PORT_A;
2118                 /* Internal port only for eDP. */
2119         default:
2120                 BUG();
2121         }
2122
2123         if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
2124                 intel_hdmi->write_infoframe = vlv_write_infoframe;
2125                 intel_hdmi->set_infoframes = vlv_set_infoframes;
2126                 intel_hdmi->infoframe_enabled = vlv_infoframe_enabled;
2127         } else if (IS_G4X(dev)) {
2128                 intel_hdmi->write_infoframe = g4x_write_infoframe;
2129                 intel_hdmi->set_infoframes = g4x_set_infoframes;
2130                 intel_hdmi->infoframe_enabled = g4x_infoframe_enabled;
2131         } else if (HAS_DDI(dev)) {
2132                 intel_hdmi->write_infoframe = hsw_write_infoframe;
2133                 intel_hdmi->set_infoframes = hsw_set_infoframes;
2134                 intel_hdmi->infoframe_enabled = hsw_infoframe_enabled;
2135         } else if (HAS_PCH_IBX(dev)) {
2136                 intel_hdmi->write_infoframe = ibx_write_infoframe;
2137                 intel_hdmi->set_infoframes = ibx_set_infoframes;
2138                 intel_hdmi->infoframe_enabled = ibx_infoframe_enabled;
2139         } else {
2140                 intel_hdmi->write_infoframe = cpt_write_infoframe;
2141                 intel_hdmi->set_infoframes = cpt_set_infoframes;
2142                 intel_hdmi->infoframe_enabled = cpt_infoframe_enabled;
2143         }
2144
2145         if (HAS_DDI(dev))
2146                 intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
2147         else
2148                 intel_connector->get_hw_state = intel_connector_get_hw_state;
2149         intel_connector->unregister = intel_connector_unregister;
2150
2151         intel_hdmi_add_properties(intel_hdmi, connector);
2152
2153         intel_connector_attach_encoder(intel_connector, intel_encoder);
2154         drm_connector_register(connector);
2155         intel_hdmi->attached_connector = intel_connector;
2156
2157         /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
2158          * 0xd.  Failure to do so will result in spurious interrupts being
2159          * generated on the port when a cable is not attached.
2160          */
2161         if (IS_G4X(dev) && !IS_GM45(dev)) {
2162                 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
2163                 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
2164         }
2165 }
2166
2167 void intel_hdmi_init(struct drm_device *dev,
2168                      i915_reg_t hdmi_reg, enum port port)
2169 {
2170         struct intel_digital_port *intel_dig_port;
2171         struct intel_encoder *intel_encoder;
2172         struct intel_connector *intel_connector;
2173
2174         intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL);
2175         if (!intel_dig_port)
2176                 return;
2177
2178         intel_connector = intel_connector_alloc();
2179         if (!intel_connector) {
2180                 kfree(intel_dig_port);
2181                 return;
2182         }
2183
2184         intel_encoder = &intel_dig_port->base;
2185
2186         drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
2187                          DRM_MODE_ENCODER_TMDS, NULL);
2188
2189         intel_encoder->compute_config = intel_hdmi_compute_config;
2190         if (HAS_PCH_SPLIT(dev)) {
2191                 intel_encoder->disable = pch_disable_hdmi;
2192                 intel_encoder->post_disable = pch_post_disable_hdmi;
2193         } else {
2194                 intel_encoder->disable = g4x_disable_hdmi;
2195         }
2196         intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
2197         intel_encoder->get_config = intel_hdmi_get_config;
2198         if (IS_CHERRYVIEW(dev)) {
2199                 intel_encoder->pre_pll_enable = chv_hdmi_pre_pll_enable;
2200                 intel_encoder->pre_enable = chv_hdmi_pre_enable;
2201                 intel_encoder->enable = vlv_enable_hdmi;
2202                 intel_encoder->post_disable = chv_hdmi_post_disable;
2203                 intel_encoder->post_pll_disable = chv_hdmi_post_pll_disable;
2204         } else if (IS_VALLEYVIEW(dev)) {
2205                 intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
2206                 intel_encoder->pre_enable = vlv_hdmi_pre_enable;
2207                 intel_encoder->enable = vlv_enable_hdmi;
2208                 intel_encoder->post_disable = vlv_hdmi_post_disable;
2209         } else {
2210                 intel_encoder->pre_enable = intel_hdmi_pre_enable;
2211                 if (HAS_PCH_CPT(dev))
2212                         intel_encoder->enable = cpt_enable_hdmi;
2213                 else if (HAS_PCH_IBX(dev))
2214                         intel_encoder->enable = ibx_enable_hdmi;
2215                 else
2216                         intel_encoder->enable = g4x_enable_hdmi;
2217         }
2218
2219         intel_encoder->type = INTEL_OUTPUT_HDMI;
2220         if (IS_CHERRYVIEW(dev)) {
2221                 if (port == PORT_D)
2222                         intel_encoder->crtc_mask = 1 << 2;
2223                 else
2224                         intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
2225         } else {
2226                 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
2227         }
2228         intel_encoder->cloneable = 1 << INTEL_OUTPUT_ANALOG;
2229         /*
2230          * BSpec is unclear about HDMI+HDMI cloning on g4x, but it seems
2231          * to work on real hardware. And since g4x can send infoframes to
2232          * only one port anyway, nothing is lost by allowing it.
2233          */
2234         if (IS_G4X(dev))
2235                 intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
2236
2237         intel_dig_port->port = port;
2238         intel_dig_port->hdmi.hdmi_reg = hdmi_reg;
2239         intel_dig_port->dp.output_reg = INVALID_MMIO_REG;
2240         intel_dig_port->max_lanes = 4;
2241
2242         intel_hdmi_init_connector(intel_dig_port, intel_connector);
2243 }