drivers/gpu/drm/i915/intel_hdmi.c

   1 /*
   2  * Copyright 2006 Dave Airlie <[email protected]>
   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 <[email protected]>
  26  *      Jesse Barnes <[email protected]>
  27  */
  28
  29 #include <linux/i2c.h>
  30 #include <linux/slab.h>
  31 #include <linux/delay.h>
  32 #include <linux/hdmi.h>
  33 #include <drm/drmP.h>
  34 #include <drm/drm_atomic_helper.h>
  35 #include <drm/drm_crtc.h>
  36 #include <drm/drm_edid.h>
  37 #include "intel_drv.h"
  38 #include <drm/i915_drm.h>
  39 #include "i915_drv.h"
  40
  41 static struct drm_device *intel_hdmi_to_dev(struct intel_hdmi *intel_hdmi)
  42 {
  43         return hdmi_to_dig_port(intel_hdmi)->base.base.dev;
  44 }
  45
  46 static void
  47 assert_hdmi_port_disabled(struct intel_hdmi *intel_hdmi)
  48 {
  49         struct drm_device *dev = intel_hdmi_to_dev(intel_hdmi);
  50         struct drm_i915_private *dev_priv = to_i915(dev);
  51         uint32_t enabled_bits;
  52
  53         enabled_bits = HAS_DDI(dev_priv) ? DDI_BUF_CTL_ENABLE : SDVO_ENABLE;
  54
  55         WARN(I915_READ(intel_hdmi->hdmi_reg) & enabled_bits,
  56              "HDMI port enabled, expecting disabled\n");
  57 }
  58
  59 struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
  60 {
  61         struct intel_digital_port *intel_dig_port =
  62                 container_of(encoder, struct intel_digital_port, base.base);
  63         return &intel_dig_port->hdmi;
  64 }
  65
  66 static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
  67 {
  68         return enc_to_intel_hdmi(&intel_attached_encoder(connector)->base);
  69 }
  70
  71 static u32 g4x_infoframe_index(enum hdmi_infoframe_type type)
  72 {
  73         switch (type) {
  74         case HDMI_INFOFRAME_TYPE_AVI:
  75                 return VIDEO_DIP_SELECT_AVI;
  76         case HDMI_INFOFRAME_TYPE_SPD:
  77                 return VIDEO_DIP_SELECT_SPD;
  78         case HDMI_INFOFRAME_TYPE_VENDOR:
  79                 return VIDEO_DIP_SELECT_VENDOR;
  80         default:
  81                 MISSING_CASE(type);
  82                 return 0;
  83         }
  84 }
  85
  86 static u32 g4x_infoframe_enable(enum hdmi_infoframe_type type)
  87 {
  88         switch (type) {
  89         case HDMI_INFOFRAME_TYPE_AVI:
  90                 return VIDEO_DIP_ENABLE_AVI;
  91         case HDMI_INFOFRAME_TYPE_SPD:
  92                 return VIDEO_DIP_ENABLE_SPD;
  93         case HDMI_INFOFRAME_TYPE_VENDOR:
  94                 return VIDEO_DIP_ENABLE_VENDOR;
  95         default:
  96                 MISSING_CASE(type);
  97                 return 0;
  98         }
  99 }
 100
 101 static u32 hsw_infoframe_enable(enum hdmi_infoframe_type type)
 102 {
 103         switch (type) {
 104         case HDMI_INFOFRAME_TYPE_AVI:
 105                 return VIDEO_DIP_ENABLE_AVI_HSW;
 106         case HDMI_INFOFRAME_TYPE_SPD:
 107                 return VIDEO_DIP_ENABLE_SPD_HSW;
 108         case HDMI_INFOFRAME_TYPE_VENDOR:
 109                 return VIDEO_DIP_ENABLE_VS_HSW;
 110         default:
 111                 MISSING_CASE(type);
 112                 return 0;
 113         }
 114 }
 115
 116 static i915_reg_t
 117 hsw_dip_data_reg(struct drm_i915_private *dev_priv,
 118                  enum transcoder cpu_transcoder,
 119                  enum hdmi_infoframe_type type,
 120                  int i)
 121 {
 122         switch (type) {
 123         case HDMI_INFOFRAME_TYPE_AVI:
 124                 return HSW_TVIDEO_DIP_AVI_DATA(cpu_transcoder, i);
 125         case HDMI_INFOFRAME_TYPE_SPD:
 126                 return HSW_TVIDEO_DIP_SPD_DATA(cpu_transcoder, i);
 127         case HDMI_INFOFRAME_TYPE_VENDOR:
 128                 return HSW_TVIDEO_DIP_VS_DATA(cpu_transcoder, i);
 129         default:
 130                 MISSING_CASE(type);
 131                 return INVALID_MMIO_REG;
 132         }
 133 }
 134
 135 static void g4x_write_infoframe(struct drm_encoder *encoder,
 136                                 enum hdmi_infoframe_type type,
 137                                 const void *frame, ssize_t len)
 138 {
 139         const uint32_t *data = frame;
 140         struct drm_device *dev = encoder->dev;
 141         struct drm_i915_private *dev_priv = to_i915(dev);
 142         u32 val = I915_READ(VIDEO_DIP_CTL);
 143         int i;
 144
 145         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 146
 147         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 148         val |= g4x_infoframe_index(type);
 149
 150         val &= ~g4x_infoframe_enable(type);
 151
 152         I915_WRITE(VIDEO_DIP_CTL, val);
 153
 154         mmiowb();
 155         for (i = 0; i < len; i += 4) {
 156                 I915_WRITE(VIDEO_DIP_DATA, *data);
 157                 data++;
 158         }
 159         /* Write every possible data byte to force correct ECC calculation. */
 160         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 161                 I915_WRITE(VIDEO_DIP_DATA, 0);
 162         mmiowb();
 163
 164         val |= g4x_infoframe_enable(type);
 165         val &= ~VIDEO_DIP_FREQ_MASK;
 166         val |= VIDEO_DIP_FREQ_VSYNC;
 167
 168         I915_WRITE(VIDEO_DIP_CTL, val);
 169         POSTING_READ(VIDEO_DIP_CTL);
 170 }
 171
 172 static bool g4x_infoframe_enabled(struct drm_encoder *encoder,
 173                                   const struct intel_crtc_state *pipe_config)
 174 {
 175         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 176         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 177         u32 val = I915_READ(VIDEO_DIP_CTL);
 178
 179         if ((val & VIDEO_DIP_ENABLE) == 0)
 180                 return false;
 181
 182         if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(intel_dig_port->port))
 183                 return false;
 184
 185         return val & (VIDEO_DIP_ENABLE_AVI |
 186                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
 187 }
 188
 189 static void ibx_write_infoframe(struct drm_encoder *encoder,
 190                                 enum hdmi_infoframe_type type,
 191                                 const void *frame, ssize_t len)
 192 {
 193         const uint32_t *data = frame;
 194         struct drm_device *dev = encoder->dev;
 195         struct drm_i915_private *dev_priv = to_i915(dev);
 196         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 197         i915_reg_t reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 198         u32 val = I915_READ(reg);
 199         int i;
 200
 201         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 202
 203         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 204         val |= g4x_infoframe_index(type);
 205
 206         val &= ~g4x_infoframe_enable(type);
 207
 208         I915_WRITE(reg, val);
 209
 210         mmiowb();
 211         for (i = 0; i < len; i += 4) {
 212                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 213                 data++;
 214         }
 215         /* Write every possible data byte to force correct ECC calculation. */
 216         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 217                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
 218         mmiowb();
 219
 220         val |= g4x_infoframe_enable(type);
 221         val &= ~VIDEO_DIP_FREQ_MASK;
 222         val |= VIDEO_DIP_FREQ_VSYNC;
 223
 224         I915_WRITE(reg, val);
 225         POSTING_READ(reg);
 226 }
 227
 228 static bool ibx_infoframe_enabled(struct drm_encoder *encoder,
 229                                   const struct intel_crtc_state *pipe_config)
 230 {
 231         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 232         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 233         enum pipe pipe = to_intel_crtc(pipe_config->base.crtc)->pipe;
 234         i915_reg_t reg = TVIDEO_DIP_CTL(pipe);
 235         u32 val = I915_READ(reg);
 236
 237         if ((val & VIDEO_DIP_ENABLE) == 0)
 238                 return false;
 239
 240         if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(intel_dig_port->port))
 241                 return false;
 242
 243         return val & (VIDEO_DIP_ENABLE_AVI |
 244                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 245                       VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 246 }
 247
 248 static void cpt_write_infoframe(struct drm_encoder *encoder,
 249                                 enum hdmi_infoframe_type type,
 250                                 const void *frame, ssize_t len)
 251 {
 252         const uint32_t *data = frame;
 253         struct drm_device *dev = encoder->dev;
 254         struct drm_i915_private *dev_priv = to_i915(dev);
 255         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 256         i915_reg_t reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 257         u32 val = I915_READ(reg);
 258         int i;
 259
 260         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 261
 262         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 263         val |= g4x_infoframe_index(type);
 264
 265         /* The DIP control register spec says that we need to update the AVI
 266          * infoframe without clearing its enable bit */
 267         if (type != HDMI_INFOFRAME_TYPE_AVI)
 268                 val &= ~g4x_infoframe_enable(type);
 269
 270         I915_WRITE(reg, val);
 271
 272         mmiowb();
 273         for (i = 0; i < len; i += 4) {
 274                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 275                 data++;
 276         }
 277         /* Write every possible data byte to force correct ECC calculation. */
 278         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 279                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
 280         mmiowb();
 281
 282         val |= g4x_infoframe_enable(type);
 283         val &= ~VIDEO_DIP_FREQ_MASK;
 284         val |= VIDEO_DIP_FREQ_VSYNC;
 285
 286         I915_WRITE(reg, val);
 287         POSTING_READ(reg);
 288 }
 289
 290 static bool cpt_infoframe_enabled(struct drm_encoder *encoder,
 291                                   const struct intel_crtc_state *pipe_config)
 292 {
 293         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 294         enum pipe pipe = to_intel_crtc(pipe_config->base.crtc)->pipe;
 295         u32 val = I915_READ(TVIDEO_DIP_CTL(pipe));
 296
 297         if ((val & VIDEO_DIP_ENABLE) == 0)
 298                 return false;
 299
 300         return val & (VIDEO_DIP_ENABLE_AVI |
 301                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 302                       VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 303 }
 304
 305 static void vlv_write_infoframe(struct drm_encoder *encoder,
 306                                 enum hdmi_infoframe_type type,
 307                                 const void *frame, ssize_t len)
 308 {
 309         const uint32_t *data = frame;
 310         struct drm_device *dev = encoder->dev;
 311         struct drm_i915_private *dev_priv = to_i915(dev);
 312         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 313         i915_reg_t reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
 314         u32 val = I915_READ(reg);
 315         int i;
 316
 317         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 318
 319         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 320         val |= g4x_infoframe_index(type);
 321
 322         val &= ~g4x_infoframe_enable(type);
 323
 324         I915_WRITE(reg, val);
 325
 326         mmiowb();
 327         for (i = 0; i < len; i += 4) {
 328                 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 329                 data++;
 330         }
 331         /* Write every possible data byte to force correct ECC calculation. */
 332         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 333                 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
 334         mmiowb();
 335
 336         val |= g4x_infoframe_enable(type);
 337         val &= ~VIDEO_DIP_FREQ_MASK;
 338         val |= VIDEO_DIP_FREQ_VSYNC;
 339
 340         I915_WRITE(reg, val);
 341         POSTING_READ(reg);
 342 }
 343
 344 static bool vlv_infoframe_enabled(struct drm_encoder *encoder,
 345                                   const struct intel_crtc_state *pipe_config)
 346 {
 347         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 348         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 349         enum pipe pipe = to_intel_crtc(pipe_config->base.crtc)->pipe;
 350         u32 val = I915_READ(VLV_TVIDEO_DIP_CTL(pipe));
 351
 352         if ((val & VIDEO_DIP_ENABLE) == 0)
 353                 return false;
 354
 355         if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(intel_dig_port->port))
 356                 return false;
 357
 358         return val & (VIDEO_DIP_ENABLE_AVI |
 359                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 360                       VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 361 }
 362
 363 static void hsw_write_infoframe(struct drm_encoder *encoder,
 364                                 enum hdmi_infoframe_type type,
 365                                 const void *frame, ssize_t len)
 366 {
 367         const uint32_t *data = frame;
 368         struct drm_device *dev = encoder->dev;
 369         struct drm_i915_private *dev_priv = to_i915(dev);
 370         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 371         enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
 372         i915_reg_t ctl_reg = HSW_TVIDEO_DIP_CTL(cpu_transcoder);
 373         i915_reg_t data_reg;
 374         int i;
 375         u32 val = I915_READ(ctl_reg);
 376
 377         data_reg = hsw_dip_data_reg(dev_priv, cpu_transcoder, type, 0);
 378
 379         val &= ~hsw_infoframe_enable(type);
 380         I915_WRITE(ctl_reg, val);
 381
 382         mmiowb();
 383         for (i = 0; i < len; i += 4) {
 384                 I915_WRITE(hsw_dip_data_reg(dev_priv, cpu_transcoder,
 385                                             type, i >> 2), *data);
 386                 data++;
 387         }
 388         /* Write every possible data byte to force correct ECC calculation. */
 389         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 390                 I915_WRITE(hsw_dip_data_reg(dev_priv, cpu_transcoder,
 391                                             type, i >> 2), 0);
 392         mmiowb();
 393
 394         val |= hsw_infoframe_enable(type);
 395         I915_WRITE(ctl_reg, val);
 396         POSTING_READ(ctl_reg);
 397 }
 398
 399 static bool hsw_infoframe_enabled(struct drm_encoder *encoder,
 400                                   const struct intel_crtc_state *pipe_config)
 401 {
 402         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 403         u32 val = I915_READ(HSW_TVIDEO_DIP_CTL(pipe_config->cpu_transcoder));
 404
 405         return val & (VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
 406                       VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
 407                       VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW);
 408 }
 409
 410 /*
 411  * The data we write to the DIP data buffer registers is 1 byte bigger than the
 412  * HDMI infoframe size because of an ECC/reserved byte at position 3 (starting
 413  * at 0). It's also a byte used by DisplayPort so the same DIP registers can be
 414  * used for both technologies.
 415  *
 416  * DW0: Reserved/ECC/DP | HB2 | HB1 | HB0
 417  * DW1:       DB3       | DB2 | DB1 | DB0
 418  * DW2:       DB7       | DB6 | DB5 | DB4
 419  * DW3: ...
 420  *
 421  * (HB is Header Byte, DB is Data Byte)
 422  *
 423  * The hdmi pack() functions don't know about that hardware specific hole so we
 424  * trick them by giving an offset into the buffer and moving back the header
 425  * bytes by one.
 426  */
 427 static void intel_write_infoframe(struct drm_encoder *encoder,
 428                                   union hdmi_infoframe *frame)
 429 {
 430         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 431         uint8_t buffer[VIDEO_DIP_DATA_SIZE];
 432         ssize_t len;
 433
 434         /* see comment above for the reason for this offset */
 435         len = hdmi_infoframe_pack(frame, buffer + 1, sizeof(buffer) - 1);
 436         if (len < 0)
 437                 return;
 438
 439         /* Insert the 'hole' (see big comment above) at position 3 */
 440         buffer[0] = buffer[1];
 441         buffer[1] = buffer[2];
 442         buffer[2] = buffer[3];
 443         buffer[3] = 0;
 444         len++;
 445
 446         intel_hdmi->write_infoframe(encoder, frame->any.type, buffer, len);
 447 }
 448
 449 static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
 450                                          const struct drm_display_mode *adjusted_mode)
 451 {
 452         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 453         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 454         union hdmi_infoframe frame;
 455         int ret;
 456
 457         ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
 458                                                        adjusted_mode);
 459         if (ret < 0) {
 460                 DRM_ERROR("couldn't fill AVI infoframe\n");
 461                 return;
 462         }
 463
 464         if (intel_hdmi->rgb_quant_range_selectable) {
 465                 if (intel_crtc->config->limited_color_range)
 466                         frame.avi.quantization_range =
 467                                 HDMI_QUANTIZATION_RANGE_LIMITED;
 468                 else
 469                         frame.avi.quantization_range =
 470                                 HDMI_QUANTIZATION_RANGE_FULL;
 471         }
 472
 473         intel_write_infoframe(encoder, &frame);
 474 }
 475
 476 static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
 477 {
 478         union hdmi_infoframe frame;
 479         int ret;
 480
 481         ret = hdmi_spd_infoframe_init(&frame.spd, "Intel", "Integrated gfx");
 482         if (ret < 0) {
 483                 DRM_ERROR("couldn't fill SPD infoframe\n");
 484                 return;
 485         }
 486
 487         frame.spd.sdi = HDMI_SPD_SDI_PC;
 488
 489         intel_write_infoframe(encoder, &frame);
 490 }
 491
 492 static void
 493 intel_hdmi_set_hdmi_infoframe(struct drm_encoder *encoder,
 494                               const struct drm_display_mode *adjusted_mode)
 495 {
 496         union hdmi_infoframe frame;
 497         int ret;
 498
 499         ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
 500                                                           adjusted_mode);
 501         if (ret < 0)
 502                 return;
 503
 504         intel_write_infoframe(encoder, &frame);
 505 }
 506
 507 static void g4x_set_infoframes(struct drm_encoder *encoder,
 508                                bool enable,
 509                                const struct drm_display_mode *adjusted_mode)
 510 {
 511         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 512         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 513         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
 514         i915_reg_t reg = VIDEO_DIP_CTL;
 515         u32 val = I915_READ(reg);
 516         u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
 517
 518         assert_hdmi_port_disabled(intel_hdmi);
 519
 520         /* If the registers were not initialized yet, they might be zeroes,
 521          * which means we're selecting the AVI DIP and we're setting its
 522          * frequency to once. This seems to really confuse the HW and make
 523          * things stop working (the register spec says the AVI always needs to
 524          * be sent every VSync). So here we avoid writing to the register more
 525          * than we need and also explicitly select the AVI DIP and explicitly
 526          * set its frequency to every VSync. Avoiding to write it twice seems to
 527          * be enough to solve the problem, but being defensive shouldn't hurt us
 528          * either. */
 529         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 530
 531         if (!enable) {
 532                 if (!(val & VIDEO_DIP_ENABLE))
 533                         return;
 534                 if (port != (val & VIDEO_DIP_PORT_MASK)) {
 535                         DRM_DEBUG_KMS("video DIP still enabled on port %c\n",
 536                                       (val & VIDEO_DIP_PORT_MASK) >> 29);
 537                         return;
 538                 }
 539                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 540                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
 541                 I915_WRITE(reg, val);
 542                 POSTING_READ(reg);
 543                 return;
 544         }
 545
 546         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 547                 if (val & VIDEO_DIP_ENABLE) {
 548                         DRM_DEBUG_KMS("video DIP already enabled on port %c\n",
 549                                       (val & VIDEO_DIP_PORT_MASK) >> 29);
 550                         return;
 551                 }
 552                 val &= ~VIDEO_DIP_PORT_MASK;
 553                 val |= port;
 554         }
 555
 556         val |= VIDEO_DIP_ENABLE;
 557         val &= ~(VIDEO_DIP_ENABLE_AVI |
 558                  VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
 559
 560         I915_WRITE(reg, val);
 561         POSTING_READ(reg);
 562
 563         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 564         intel_hdmi_set_spd_infoframe(encoder);
 565         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 566 }
 567
 568 static bool hdmi_sink_is_deep_color(struct drm_encoder *encoder)
 569 {
 570         struct drm_device *dev = encoder->dev;
 571         struct drm_connector *connector;
 572
 573         WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
 574
 575         /*
 576          * HDMI cloning is only supported on g4x which doesn't
 577          * support deep color or GCP infoframes anyway so no
 578          * need to worry about multiple HDMI sinks here.
 579          */
 580         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 581                 if (connector->encoder == encoder)
 582                         return connector->display_info.bpc > 8;
 583
 584         return false;
 585 }
 586
 587 /*
 588  * Determine if default_phase=1 can be indicated in the GCP infoframe.
 589  *
 590  * From HDMI specification 1.4a:
 591  * - The first pixel of each Video Data Period shall always have a pixel packing phase of 0
 592  * - The first pixel following each Video Data Period shall have a pixel packing phase of 0
 593  * - The PP bits shall be constant for all GCPs and will be equal to the last packing phase
 594  * - The first pixel following every transition of HSYNC or VSYNC shall have a pixel packing
 595  *   phase of 0
 596  */
 597 static bool gcp_default_phase_possible(int pipe_bpp,
 598                                        const struct drm_display_mode *mode)
 599 {
 600         unsigned int pixels_per_group;
 601
 602         switch (pipe_bpp) {
 603         case 30:
 604                 /* 4 pixels in 5 clocks */
 605                 pixels_per_group = 4;
 606                 break;
 607         case 36:
 608                 /* 2 pixels in 3 clocks */
 609                 pixels_per_group = 2;
 610                 break;
 611         case 48:
 612                 /* 1 pixel in 2 clocks */
 613                 pixels_per_group = 1;
 614                 break;
 615         default:
 616                 /* phase information not relevant for 8bpc */
 617                 return false;
 618         }
 619
 620         return mode->crtc_hdisplay % pixels_per_group == 0 &&
 621                 mode->crtc_htotal % pixels_per_group == 0 &&
 622                 mode->crtc_hblank_start % pixels_per_group == 0 &&
 623                 mode->crtc_hblank_end % pixels_per_group == 0 &&
 624                 mode->crtc_hsync_start % pixels_per_group == 0 &&
 625                 mode->crtc_hsync_end % pixels_per_group == 0 &&
 626                 ((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0 ||
 627                  mode->crtc_htotal/2 % pixels_per_group == 0);
 628 }
 629
 630 static bool intel_hdmi_set_gcp_infoframe(struct drm_encoder *encoder)
 631 {
 632         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 633         struct intel_crtc *crtc = to_intel_crtc(encoder->crtc);
 634         i915_reg_t reg;
 635         u32 val = 0;
 636
 637         if (HAS_DDI(dev_priv))
 638                 reg = HSW_TVIDEO_DIP_GCP(crtc->config->cpu_transcoder);
 639         else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 640                 reg = VLV_TVIDEO_DIP_GCP(crtc->pipe);
 641         else if (HAS_PCH_SPLIT(dev_priv))
 642                 reg = TVIDEO_DIP_GCP(crtc->pipe);
 643         else
 644                 return false;
 645
 646         /* Indicate color depth whenever the sink supports deep color */
 647         if (hdmi_sink_is_deep_color(encoder))
 648                 val |= GCP_COLOR_INDICATION;
 649
 650         /* Enable default_phase whenever the display mode is suitably aligned */
 651         if (gcp_default_phase_possible(crtc->config->pipe_bpp,
 652                                        &crtc->config->base.adjusted_mode))
 653                 val |= GCP_DEFAULT_PHASE_ENABLE;
 654
 655         I915_WRITE(reg, val);
 656
 657         return val != 0;
 658 }
 659
 660 static void ibx_set_infoframes(struct drm_encoder *encoder,
 661                                bool enable,
 662                                const struct drm_display_mode *adjusted_mode)
 663 {
 664         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 665         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 666         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 667         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
 668         i915_reg_t reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 669         u32 val = I915_READ(reg);
 670         u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
 671
 672         assert_hdmi_port_disabled(intel_hdmi);
 673
 674         /* See the big comment in g4x_set_infoframes() */
 675         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 676
 677         if (!enable) {
 678                 if (!(val & VIDEO_DIP_ENABLE))
 679                         return;
 680                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 681                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 682                          VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 683                 I915_WRITE(reg, val);
 684                 POSTING_READ(reg);
 685                 return;
 686         }
 687
 688         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 689                 WARN(val & VIDEO_DIP_ENABLE,
 690                      "DIP already enabled on port %c\n",
 691                      (val & VIDEO_DIP_PORT_MASK) >> 29);
 692                 val &= ~VIDEO_DIP_PORT_MASK;
 693                 val |= port;
 694         }
 695
 696         val |= VIDEO_DIP_ENABLE;
 697         val &= ~(VIDEO_DIP_ENABLE_AVI |
 698                  VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 699                  VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 700
 701         if (intel_hdmi_set_gcp_infoframe(encoder))
 702                 val |= VIDEO_DIP_ENABLE_GCP;
 703
 704         I915_WRITE(reg, val);
 705         POSTING_READ(reg);
 706
 707         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 708         intel_hdmi_set_spd_infoframe(encoder);
 709         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 710 }
 711
 712 static void cpt_set_infoframes(struct drm_encoder *encoder,
 713                                bool enable,
 714                                const struct drm_display_mode *adjusted_mode)
 715 {
 716         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 717         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 718         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 719         i915_reg_t reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 720         u32 val = I915_READ(reg);
 721
 722         assert_hdmi_port_disabled(intel_hdmi);
 723
 724         /* See the big comment in g4x_set_infoframes() */
 725         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 726
 727         if (!enable) {
 728                 if (!(val & VIDEO_DIP_ENABLE))
 729                         return;
 730                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 731                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 732                          VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 733                 I915_WRITE(reg, val);
 734                 POSTING_READ(reg);
 735                 return;
 736         }
 737
 738         /* Set both together, unset both together: see the spec. */
 739         val |= VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI;
 740         val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 741                  VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 742
 743         if (intel_hdmi_set_gcp_infoframe(encoder))
 744                 val |= VIDEO_DIP_ENABLE_GCP;
 745
 746         I915_WRITE(reg, val);
 747         POSTING_READ(reg);
 748
 749         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 750         intel_hdmi_set_spd_infoframe(encoder);
 751         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 752 }
 753
 754 static void vlv_set_infoframes(struct drm_encoder *encoder,
 755                                bool enable,
 756                                const struct drm_display_mode *adjusted_mode)
 757 {
 758         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 759         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 760         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 761         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 762         i915_reg_t reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
 763         u32 val = I915_READ(reg);
 764         u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
 765
 766         assert_hdmi_port_disabled(intel_hdmi);
 767
 768         /* See the big comment in g4x_set_infoframes() */
 769         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 770
 771         if (!enable) {
 772                 if (!(val & VIDEO_DIP_ENABLE))
 773                         return;
 774                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 775                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 776                          VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 777                 I915_WRITE(reg, val);
 778                 POSTING_READ(reg);
 779                 return;
 780         }
 781
 782         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 783                 WARN(val & VIDEO_DIP_ENABLE,
 784                      "DIP already enabled on port %c\n",
 785                      (val & VIDEO_DIP_PORT_MASK) >> 29);
 786                 val &= ~VIDEO_DIP_PORT_MASK;
 787                 val |= port;
 788         }
 789
 790         val |= VIDEO_DIP_ENABLE;
 791         val &= ~(VIDEO_DIP_ENABLE_AVI |
 792                  VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 793                  VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 794
 795         if (intel_hdmi_set_gcp_infoframe(encoder))
 796                 val |= VIDEO_DIP_ENABLE_GCP;
 797
 798         I915_WRITE(reg, val);
 799         POSTING_READ(reg);
 800
 801         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 802         intel_hdmi_set_spd_infoframe(encoder);
 803         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 804 }
 805
 806 static void hsw_set_infoframes(struct drm_encoder *encoder,
 807                                bool enable,
 808                                const struct drm_display_mode *adjusted_mode)
 809 {
 810         struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 811         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 812         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 813         i915_reg_t reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config->cpu_transcoder);
 814         u32 val = I915_READ(reg);
 815
 816         assert_hdmi_port_disabled(intel_hdmi);
 817
 818         val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
 819                  VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
 820                  VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW);
 821
 822         if (!enable) {
 823                 I915_WRITE(reg, val);
 824                 POSTING_READ(reg);
 825                 return;
 826         }
 827
 828         if (intel_hdmi_set_gcp_infoframe(encoder))
 829                 val |= VIDEO_DIP_ENABLE_GCP_HSW;
 830
 831         I915_WRITE(reg, val);
 832         POSTING_READ(reg);
 833
 834         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 835         intel_hdmi_set_spd_infoframe(encoder);
 836         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 837 }
 838
 839 void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable)
 840 {
 841         struct drm_i915_private *dev_priv = to_i915(intel_hdmi_to_dev(hdmi));
 842         struct i2c_adapter *adapter =
 843                 intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
 844
 845         if (hdmi->dp_dual_mode.type < DRM_DP_DUAL_MODE_TYPE2_DVI)
 846                 return;
 847
 848         DRM_DEBUG_KMS("%s DP dual mode adaptor TMDS output\n",
 849                       enable ? "Enabling" : "Disabling");
 850
 851         drm_dp_dual_mode_set_tmds_output(hdmi->dp_dual_mode.type,
 852                                          adapter, enable);
 853 }
 854
 855 static void intel_hdmi_prepare(struct intel_encoder *encoder)
 856 {
 857         struct drm_device *dev = encoder->base.dev;
 858         struct drm_i915_private *dev_priv = to_i915(dev);
 859         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 860         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 861         const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
 862         u32 hdmi_val;
 863
 864         intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
 865
 866         hdmi_val = SDVO_ENCODING_HDMI;
 867         if (!HAS_PCH_SPLIT(dev_priv) && crtc->config->limited_color_range)
 868                 hdmi_val |= HDMI_COLOR_RANGE_16_235;
 869         if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
 870                 hdmi_val |= SDVO_VSYNC_ACTIVE_HIGH;
 871         if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
 872                 hdmi_val |= SDVO_HSYNC_ACTIVE_HIGH;
 873
 874         if (crtc->config->pipe_bpp > 24)
 875                 hdmi_val |= HDMI_COLOR_FORMAT_12bpc;
 876         else
 877                 hdmi_val |= SDVO_COLOR_FORMAT_8bpc;
 878
 879         if (crtc->config->has_hdmi_sink)
 880                 hdmi_val |= HDMI_MODE_SELECT_HDMI;
 881
 882         if (HAS_PCH_CPT(dev_priv))
 883                 hdmi_val |= SDVO_PIPE_SEL_CPT(crtc->pipe);
 884         else if (IS_CHERRYVIEW(dev_priv))
 885                 hdmi_val |= SDVO_PIPE_SEL_CHV(crtc->pipe);
 886         else
 887                 hdmi_val |= SDVO_PIPE_SEL(crtc->pipe);
 888
 889         I915_WRITE(intel_hdmi->hdmi_reg, hdmi_val);
 890         POSTING_READ(intel_hdmi->hdmi_reg);
 891 }
 892
 893 static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
 894                                     enum pipe *pipe)
 895 {
 896         struct drm_device *dev = encoder->base.dev;
 897         struct drm_i915_private *dev_priv = to_i915(dev);
 898         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 899         enum intel_display_power_domain power_domain;
 900         u32 tmp;
 901         bool ret;
 902
 903         power_domain = intel_display_port_power_domain(encoder);
 904         if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
 905                 return false;
 906
 907         ret = false;
 908
 909         tmp = I915_READ(intel_hdmi->hdmi_reg);
 910
 911         if (!(tmp & SDVO_ENABLE))
 912                 goto out;
 913
 914         if (HAS_PCH_CPT(dev_priv))
 915                 *pipe = PORT_TO_PIPE_CPT(tmp);
 916         else if (IS_CHERRYVIEW(dev_priv))
 917                 *pipe = SDVO_PORT_TO_PIPE_CHV(tmp);
 918         else
 919                 *pipe = PORT_TO_PIPE(tmp);
 920
 921         ret = true;
 922
 923 out:
 924         intel_display_power_put(dev_priv, power_domain);
 925
 926         return ret;
 927 }
 928
 929 static void intel_hdmi_get_config(struct intel_encoder *encoder,
 930                                   struct intel_crtc_state *pipe_config)
 931 {
 932         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 933         struct drm_device *dev = encoder->base.dev;
 934         struct drm_i915_private *dev_priv = to_i915(dev);
 935         u32 tmp, flags = 0;
 936         int dotclock;
 937
 938         tmp = I915_READ(intel_hdmi->hdmi_reg);
 939
 940         if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
 941                 flags |= DRM_MODE_FLAG_PHSYNC;
 942         else
 943                 flags |= DRM_MODE_FLAG_NHSYNC;
 944
 945         if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
 946                 flags |= DRM_MODE_FLAG_PVSYNC;
 947         else
 948                 flags |= DRM_MODE_FLAG_NVSYNC;
 949
 950         if (tmp & HDMI_MODE_SELECT_HDMI)
 951                 pipe_config->has_hdmi_sink = true;
 952
 953         if (intel_hdmi->infoframe_enabled(&encoder->base, pipe_config))
 954                 pipe_config->has_infoframe = true;
 955
 956         if (tmp & SDVO_AUDIO_ENABLE)
 957                 pipe_config->has_audio = true;
 958
 959         if (!HAS_PCH_SPLIT(dev_priv) &&
 960             tmp & HDMI_COLOR_RANGE_16_235)
 961                 pipe_config->limited_color_range = true;
 962
 963         pipe_config->base.adjusted_mode.flags |= flags;
 964
 965         if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
 966                 dotclock = pipe_config->port_clock * 2 / 3;
 967         else
 968                 dotclock = pipe_config->port_clock;
 969
 970         if (pipe_config->pixel_multiplier)
 971                 dotclock /= pipe_config->pixel_multiplier;
 972
 973         pipe_config->base.adjusted_mode.crtc_clock = dotclock;
 974
 975         pipe_config->lane_count = 4;
 976 }
 977
 978 static void intel_enable_hdmi_audio(struct intel_encoder *encoder,
 979                                     struct intel_crtc_state *pipe_config,
 980                                     struct drm_connector_state *conn_state)
 981 {
 982         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 983
 984         WARN_ON(!crtc->config->has_hdmi_sink);
 985         DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
 986                          pipe_name(crtc->pipe));
 987         intel_audio_codec_enable(encoder, pipe_config, conn_state);
 988 }
 989
 990 static void g4x_enable_hdmi(struct intel_encoder *encoder,
 991                             struct intel_crtc_state *pipe_config,
 992                             struct drm_connector_state *conn_state)
 993 {
 994         struct drm_device *dev = encoder->base.dev;
 995         struct drm_i915_private *dev_priv = to_i915(dev);
 996         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 997         u32 temp;
 998
 999         temp = I915_READ(intel_hdmi->hdmi_reg);
1000
1001         temp |= SDVO_ENABLE;
1002         if (pipe_config->has_audio)
1003                 temp |= SDVO_AUDIO_ENABLE;
1004
1005         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1006         POSTING_READ(intel_hdmi->hdmi_reg);
1007
1008         if (pipe_config->has_audio)
1009                 intel_enable_hdmi_audio(encoder, pipe_config, conn_state);
1010 }
1011
1012 static void ibx_enable_hdmi(struct intel_encoder *encoder,
1013                             struct intel_crtc_state *pipe_config,
1014                             struct drm_connector_state *conn_state)
1015 {
1016         struct drm_device *dev = encoder->base.dev;
1017         struct drm_i915_private *dev_priv = to_i915(dev);
1018         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1019         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1020         u32 temp;
1021
1022         temp = I915_READ(intel_hdmi->hdmi_reg);
1023
1024         temp |= SDVO_ENABLE;
1025         if (crtc->config->has_audio)
1026                 temp |= SDVO_AUDIO_ENABLE;
1027
1028         /*
1029          * HW workaround, need to write this twice for issue
1030          * that may result in first write getting masked.
1031          */
1032         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1033         POSTING_READ(intel_hdmi->hdmi_reg);
1034         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1035         POSTING_READ(intel_hdmi->hdmi_reg);
1036
1037         /*
1038          * HW workaround, need to toggle enable bit off and on
1039          * for 12bpc with pixel repeat.
1040          *
1041          * FIXME: BSpec says this should be done at the end of
1042          * of the modeset sequence, so not sure if this isn't too soon.
1043          */
1044         if (pipe_config->pipe_bpp > 24 &&
1045             pipe_config->pixel_multiplier > 1) {
1046                 I915_WRITE(intel_hdmi->hdmi_reg, temp & ~SDVO_ENABLE);
1047                 POSTING_READ(intel_hdmi->hdmi_reg);
1048
1049                 /*
1050                  * HW workaround, need to write this twice for issue
1051                  * that may result in first write getting masked.
1052                  */
1053                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1054                 POSTING_READ(intel_hdmi->hdmi_reg);
1055                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1056                 POSTING_READ(intel_hdmi->hdmi_reg);
1057         }
1058
1059         if (pipe_config->has_audio)
1060                 intel_enable_hdmi_audio(encoder, pipe_config, conn_state);
1061 }
1062
1063 static void cpt_enable_hdmi(struct intel_encoder *encoder,
1064                             struct intel_crtc_state *pipe_config,
1065                             struct drm_connector_state *conn_state)
1066 {
1067         struct drm_device *dev = encoder->base.dev;
1068         struct drm_i915_private *dev_priv = to_i915(dev);
1069         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1070         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1071         enum pipe pipe = crtc->pipe;
1072         u32 temp;
1073
1074         temp = I915_READ(intel_hdmi->hdmi_reg);
1075
1076         temp |= SDVO_ENABLE;
1077         if (pipe_config->has_audio)
1078                 temp |= SDVO_AUDIO_ENABLE;
1079
1080         /*
1081          * WaEnableHDMI8bpcBefore12bpc:snb,ivb
1082          *
1083          * The procedure for 12bpc is as follows:
1084          * 1. disable HDMI clock gating
1085          * 2. enable HDMI with 8bpc
1086          * 3. enable HDMI with 12bpc
1087          * 4. enable HDMI clock gating
1088          */
1089
1090         if (pipe_config->pipe_bpp > 24) {
1091                 I915_WRITE(TRANS_CHICKEN1(pipe),
1092                            I915_READ(TRANS_CHICKEN1(pipe)) |
1093                            TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
1094
1095                 temp &= ~SDVO_COLOR_FORMAT_MASK;
1096                 temp |= SDVO_COLOR_FORMAT_8bpc;
1097         }
1098
1099         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1100         POSTING_READ(intel_hdmi->hdmi_reg);
1101
1102         if (pipe_config->pipe_bpp > 24) {
1103                 temp &= ~SDVO_COLOR_FORMAT_MASK;
1104                 temp |= HDMI_COLOR_FORMAT_12bpc;
1105
1106                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1107                 POSTING_READ(intel_hdmi->hdmi_reg);
1108
1109                 I915_WRITE(TRANS_CHICKEN1(pipe),
1110                            I915_READ(TRANS_CHICKEN1(pipe)) &
1111                            ~TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
1112         }
1113
1114         if (pipe_config->has_audio)
1115                 intel_enable_hdmi_audio(encoder, pipe_config, conn_state);
1116 }
1117
1118 static void vlv_enable_hdmi(struct intel_encoder *encoder,
1119                             struct intel_crtc_state *pipe_config,
1120                             struct drm_connector_state *conn_state)
1121 {
1122 }
1123
1124 static void intel_disable_hdmi(struct intel_encoder *encoder,
1125                                struct intel_crtc_state *old_crtc_state,
1126                                struct drm_connector_state *old_conn_state)
1127 {
1128         struct drm_device *dev = encoder->base.dev;
1129         struct drm_i915_private *dev_priv = to_i915(dev);
1130         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1131         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1132         u32 temp;
1133
1134         temp = I915_READ(intel_hdmi->hdmi_reg);
1135
1136         temp &= ~(SDVO_ENABLE | SDVO_AUDIO_ENABLE);
1137         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1138         POSTING_READ(intel_hdmi->hdmi_reg);
1139
1140         /*
1141          * HW workaround for IBX, we need to move the port
1142          * to transcoder A after disabling it to allow the
1143          * matching DP port to be enabled on transcoder A.
1144          */
1145         if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B) {
1146                 /*
1147                  * We get CPU/PCH FIFO underruns on the other pipe when
1148                  * doing the workaround. Sweep them under the rug.
1149                  */
1150                 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
1151                 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
1152
1153                 temp &= ~SDVO_PIPE_B_SELECT;
1154                 temp |= SDVO_ENABLE;
1155                 /*
1156                  * HW workaround, need to write this twice for issue
1157                  * that may result in first write getting masked.
1158                  */
1159                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1160                 POSTING_READ(intel_hdmi->hdmi_reg);
1161                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1162                 POSTING_READ(intel_hdmi->hdmi_reg);
1163
1164                 temp &= ~SDVO_ENABLE;
1165                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1166                 POSTING_READ(intel_hdmi->hdmi_reg);
1167
1168                 intel_wait_for_vblank_if_active(dev_priv, PIPE_A);
1169                 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
1170                 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
1171         }
1172
1173         intel_hdmi->set_infoframes(&encoder->base, false, NULL);
1174
1175         intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
1176 }
1177
1178 static void g4x_disable_hdmi(struct intel_encoder *encoder,
1179                              struct intel_crtc_state *old_crtc_state,
1180                              struct drm_connector_state *old_conn_state)
1181 {
1182         if (old_crtc_state->has_audio)
1183                 intel_audio_codec_disable(encoder);
1184
1185         intel_disable_hdmi(encoder, old_crtc_state, old_conn_state);
1186 }
1187
1188 static void pch_disable_hdmi(struct intel_encoder *encoder,
1189                              struct intel_crtc_state *old_crtc_state,
1190                              struct drm_connector_state *old_conn_state)
1191 {
1192         if (old_crtc_state->has_audio)
1193                 intel_audio_codec_disable(encoder);
1194 }
1195
1196 static void pch_post_disable_hdmi(struct intel_encoder *encoder,
1197                                   struct intel_crtc_state *old_crtc_state,
1198                                   struct drm_connector_state *old_conn_state)
1199 {
1200         intel_disable_hdmi(encoder, old_crtc_state, old_conn_state);
1201 }
1202
1203 static int intel_hdmi_source_max_tmds_clock(struct drm_i915_private *dev_priv)
1204 {
1205         if (IS_G4X(dev_priv))
1206                 return 165000;
1207         else if (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)
1208                 return 300000;
1209         else
1210                 return 225000;
1211 }
1212
1213 static int hdmi_port_clock_limit(struct intel_hdmi *hdmi,
1214                                  bool respect_downstream_limits)
1215 {
1216         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1217         int max_tmds_clock = intel_hdmi_source_max_tmds_clock(to_i915(dev));
1218
1219         if (respect_downstream_limits) {
1220                 struct intel_connector *connector = hdmi->attached_connector;
1221                 const struct drm_display_info *info = &connector->base.display_info;
1222
1223                 if (hdmi->dp_dual_mode.max_tmds_clock)
1224                         max_tmds_clock = min(max_tmds_clock,
1225                                              hdmi->dp_dual_mode.max_tmds_clock);
1226
1227                 if (info->max_tmds_clock)
1228                         max_tmds_clock = min(max_tmds_clock,
1229                                              info->max_tmds_clock);
1230                 else if (!hdmi->has_hdmi_sink)
1231                         max_tmds_clock = min(max_tmds_clock, 165000);
1232         }
1233
1234         return max_tmds_clock;
1235 }
1236
1237 static enum drm_mode_status
1238 hdmi_port_clock_valid(struct intel_hdmi *hdmi,
1239                       int clock, bool respect_downstream_limits)
1240 {
1241         struct drm_i915_private *dev_priv = to_i915(intel_hdmi_to_dev(hdmi));
1242
1243         if (clock < 25000)
1244                 return MODE_CLOCK_LOW;
1245         if (clock > hdmi_port_clock_limit(hdmi, respect_downstream_limits))
1246                 return MODE_CLOCK_HIGH;
1247
1248         /* BXT DPLL can't generate 223-240 MHz */
1249         if (IS_BROXTON(dev_priv) && clock > 223333 && clock < 240000)
1250                 return MODE_CLOCK_RANGE;
1251
1252         /* CHV DPLL can't generate 216-240 MHz */
1253         if (IS_CHERRYVIEW(dev_priv) && clock > 216000 && clock < 240000)
1254                 return MODE_CLOCK_RANGE;
1255
1256         return MODE_OK;
1257 }
1258
1259 static enum drm_mode_status
1260 intel_hdmi_mode_valid(struct drm_connector *connector,
1261                       struct drm_display_mode *mode)
1262 {
1263         struct intel_hdmi *hdmi = intel_attached_hdmi(connector);
1264         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1265         struct drm_i915_private *dev_priv = to_i915(dev);
1266         enum drm_mode_status status;
1267         int clock;
1268         int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
1269
1270         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
1271                 return MODE_NO_DBLESCAN;
1272
1273         clock = mode->clock;
1274
1275         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1276                 clock *= 2;
1277
1278         if (clock > max_dotclk)
1279                 return MODE_CLOCK_HIGH;
1280
1281         if (mode->flags & DRM_MODE_FLAG_DBLCLK)
1282                 clock *= 2;
1283
1284         /* check if we can do 8bpc */
1285         status = hdmi_port_clock_valid(hdmi, clock, true);
1286
1287         /* if we can't do 8bpc we may still be able to do 12bpc */
1288         if (!HAS_GMCH_DISPLAY(dev_priv) && status != MODE_OK)
1289                 status = hdmi_port_clock_valid(hdmi, clock * 3 / 2, true);
1290
1291         return status;
1292 }
1293
1294 static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state)
1295 {
1296         struct drm_device *dev = crtc_state->base.crtc->dev;
1297
1298         if (HAS_GMCH_DISPLAY(to_i915(dev)))
1299                 return false;
1300
1301         /*
1302          * HDMI 12bpc affects the clocks, so it's only possible
1303          * when not cloning with other encoder types.
1304          */
1305         return crtc_state->output_types == 1 << INTEL_OUTPUT_HDMI;
1306 }
1307
1308 bool intel_hdmi_compute_config(struct intel_encoder *encoder,
1309                                struct intel_crtc_state *pipe_config,
1310                                struct drm_connector_state *conn_state)
1311 {
1312         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1313         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1314         struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
1315         int clock_8bpc = pipe_config->base.adjusted_mode.crtc_clock;
1316         int clock_12bpc = clock_8bpc * 3 / 2;
1317         int desired_bpp;
1318
1319         pipe_config->has_hdmi_sink = intel_hdmi->has_hdmi_sink;
1320
1321         if (pipe_config->has_hdmi_sink)
1322                 pipe_config->has_infoframe = true;
1323
1324         if (intel_hdmi->color_range_auto) {
1325                 /* See CEA-861-E - 5.1 Default Encoding Parameters */
1326                 pipe_config->limited_color_range =
1327                         pipe_config->has_hdmi_sink &&
1328                         drm_match_cea_mode(adjusted_mode) > 1;
1329         } else {
1330                 pipe_config->limited_color_range =
1331                         intel_hdmi->limited_color_range;
1332         }
1333
1334         if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) {
1335                 pipe_config->pixel_multiplier = 2;
1336                 clock_8bpc *= 2;
1337                 clock_12bpc *= 2;
1338         }
1339
1340         if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv))
1341                 pipe_config->has_pch_encoder = true;
1342
1343         if (pipe_config->has_hdmi_sink && intel_hdmi->has_audio)
1344                 pipe_config->has_audio = true;
1345
1346         /*
1347          * HDMI is either 12 or 8, so if the display lets 10bpc sneak
1348          * through, clamp it down. Note that g4x/vlv don't support 12bpc hdmi
1349          * outputs. We also need to check that the higher clock still fits
1350          * within limits.
1351          */
1352         if (pipe_config->pipe_bpp > 8*3 && pipe_config->has_hdmi_sink &&
1353             hdmi_port_clock_valid(intel_hdmi, clock_12bpc, true) == MODE_OK &&
1354             hdmi_12bpc_possible(pipe_config)) {
1355                 DRM_DEBUG_KMS("picking bpc to 12 for HDMI output\n");
1356                 desired_bpp = 12*3;
1357
1358                 /* Need to adjust the port link by 1.5x for 12bpc. */
1359                 pipe_config->port_clock = clock_12bpc;
1360         } else {
1361                 DRM_DEBUG_KMS("picking bpc to 8 for HDMI output\n");
1362                 desired_bpp = 8*3;
1363
1364                 pipe_config->port_clock = clock_8bpc;
1365         }
1366
1367         if (!pipe_config->bw_constrained) {
1368                 DRM_DEBUG_KMS("forcing pipe bpc to %i for HDMI\n", desired_bpp);
1369                 pipe_config->pipe_bpp = desired_bpp;
1370         }
1371
1372         if (hdmi_port_clock_valid(intel_hdmi, pipe_config->port_clock,
1373                                   false) != MODE_OK) {
1374                 DRM_DEBUG_KMS("unsupported HDMI clock, rejecting mode\n");
1375                 return false;
1376         }
1377
1378         /* Set user selected PAR to incoming mode's member */
1379         adjusted_mode->picture_aspect_ratio = intel_hdmi->aspect_ratio;
1380
1381         pipe_config->lane_count = 4;
1382
1383         return true;
1384 }
1385
1386 static void
1387 intel_hdmi_unset_edid(struct drm_connector *connector)
1388 {
1389         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1390
1391         intel_hdmi->has_hdmi_sink = false;
1392         intel_hdmi->has_audio = false;
1393         intel_hdmi->rgb_quant_range_selectable = false;
1394
1395         intel_hdmi->dp_dual_mode.type = DRM_DP_DUAL_MODE_NONE;
1396         intel_hdmi->dp_dual_mode.max_tmds_clock = 0;
1397
1398         kfree(to_intel_connector(connector)->detect_edid);
1399         to_intel_connector(connector)->detect_edid = NULL;
1400 }
1401
1402 static void
1403 intel_hdmi_dp_dual_mode_detect(struct drm_connector *connector, bool has_edid)
1404 {
1405         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1406         struct intel_hdmi *hdmi = intel_attached_hdmi(connector);
1407         enum port port = hdmi_to_dig_port(hdmi)->port;
1408         struct i2c_adapter *adapter =
1409                 intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
1410         enum drm_dp_dual_mode_type type = drm_dp_dual_mode_detect(adapter);
1411
1412         /*
1413          * Type 1 DVI adaptors are not required to implement any
1414          * registers, so we can't always detect their presence.
1415          * Ideally we should be able to check the state of the
1416          * CONFIG1 pin, but no such luck on our hardware.
1417          *
1418          * The only method left to us is to check the VBT to see
1419          * if the port is a dual mode capable DP port. But let's
1420          * only do that when we sucesfully read the EDID, to avoid
1421          * confusing log messages about DP dual mode adaptors when
1422          * there's nothing connected to the port.
1423          */
1424         if (type == DRM_DP_DUAL_MODE_UNKNOWN) {
1425                 if (has_edid &&
1426                     intel_bios_is_port_dp_dual_mode(dev_priv, port)) {
1427                         DRM_DEBUG_KMS("Assuming DP dual mode adaptor presence based on VBT\n");
1428                         type = DRM_DP_DUAL_MODE_TYPE1_DVI;
1429                 } else {
1430                         type = DRM_DP_DUAL_MODE_NONE;
1431                 }
1432         }
1433
1434         if (type == DRM_DP_DUAL_MODE_NONE)
1435                 return;
1436
1437         hdmi->dp_dual_mode.type = type;
1438         hdmi->dp_dual_mode.max_tmds_clock =
1439                 drm_dp_dual_mode_max_tmds_clock(type, adapter);
1440
1441         DRM_DEBUG_KMS("DP dual mode adaptor (%s) detected (max TMDS clock: %d kHz)\n",
1442                       drm_dp_get_dual_mode_type_name(type),
1443                       hdmi->dp_dual_mode.max_tmds_clock);
1444 }
1445
1446 static bool
1447 intel_hdmi_set_edid(struct drm_connector *connector)
1448 {
1449         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1450         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1451         struct edid *edid;
1452         bool connected = false;
1453
1454         intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
1455
1456         edid = drm_get_edid(connector,
1457                             intel_gmbus_get_adapter(dev_priv,
1458                             intel_hdmi->ddc_bus));
1459
1460         intel_hdmi_dp_dual_mode_detect(connector, edid != NULL);
1461
1462         intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
1463
1464         to_intel_connector(connector)->detect_edid = edid;
1465         if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
1466                 intel_hdmi->rgb_quant_range_selectable =
1467                         drm_rgb_quant_range_selectable(edid);
1468
1469                 intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
1470                 if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
1471                         intel_hdmi->has_audio =
1472                                 intel_hdmi->force_audio == HDMI_AUDIO_ON;
1473
1474                 if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
1475                         intel_hdmi->has_hdmi_sink =
1476                                 drm_detect_hdmi_monitor(edid);
1477
1478                 connected = true;
1479         }
1480
1481         return connected;
1482 }
1483
1484 static enum drm_connector_status
1485 intel_hdmi_detect(struct drm_connector *connector, bool force)
1486 {
1487         enum drm_connector_status status;
1488         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1489
1490         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1491                       connector->base.id, connector->name);
1492
1493         intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
1494
1495         intel_hdmi_unset_edid(connector);
1496
1497         if (intel_hdmi_set_edid(connector)) {
1498                 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1499
1500                 hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
1501                 status = connector_status_connected;
1502         } else
1503                 status = connector_status_disconnected;
1504
1505         intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
1506
1507         return status;
1508 }
1509
1510 static void
1511 intel_hdmi_force(struct drm_connector *connector)
1512 {
1513         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1514
1515         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1516                       connector->base.id, connector->name);
1517
1518         intel_hdmi_unset_edid(connector);
1519
1520         if (connector->status != connector_status_connected)
1521                 return;
1522
1523         intel_hdmi_set_edid(connector);
1524         hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
1525 }
1526
1527 static int intel_hdmi_get_modes(struct drm_connector *connector)
1528 {
1529         struct edid *edid;
1530
1531         edid = to_intel_connector(connector)->detect_edid;
1532         if (edid == NULL)
1533                 return 0;
1534
1535         return intel_connector_update_modes(connector, edid);
1536 }
1537
1538 static bool
1539 intel_hdmi_detect_audio(struct drm_connector *connector)
1540 {
1541         bool has_audio = false;
1542         struct edid *edid;
1543
1544         edid = to_intel_connector(connector)->detect_edid;
1545         if (edid && edid->input & DRM_EDID_INPUT_DIGITAL)
1546                 has_audio = drm_detect_monitor_audio(edid);
1547
1548         return has_audio;
1549 }
1550
1551 static int
1552 intel_hdmi_set_property(struct drm_connector *connector,
1553                         struct drm_property *property,
1554                         uint64_t val)
1555 {
1556         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1557         struct intel_digital_port *intel_dig_port =
1558                 hdmi_to_dig_port(intel_hdmi);
1559         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1560         int ret;
1561
1562         ret = drm_object_property_set_value(&connector->base, property, val);
1563         if (ret)
1564                 return ret;
1565
1566         if (property == dev_priv->force_audio_property) {
1567                 enum hdmi_force_audio i = val;
1568                 bool has_audio;
1569
1570                 if (i == intel_hdmi->force_audio)
1571                         return 0;
1572
1573                 intel_hdmi->force_audio = i;
1574
1575                 if (i == HDMI_AUDIO_AUTO)
1576                         has_audio = intel_hdmi_detect_audio(connector);
1577                 else
1578                         has_audio = (i == HDMI_AUDIO_ON);
1579
1580                 if (i == HDMI_AUDIO_OFF_DVI)
1581                         intel_hdmi->has_hdmi_sink = 0;
1582
1583                 intel_hdmi->has_audio = has_audio;
1584                 goto done;
1585         }
1586
1587         if (property == dev_priv->broadcast_rgb_property) {
1588                 bool old_auto = intel_hdmi->color_range_auto;
1589                 bool old_range = intel_hdmi->limited_color_range;
1590
1591                 switch (val) {
1592                 case INTEL_BROADCAST_RGB_AUTO:
1593                         intel_hdmi->color_range_auto = true;
1594                         break;
1595                 case INTEL_BROADCAST_RGB_FULL:
1596                         intel_hdmi->color_range_auto = false;
1597                         intel_hdmi->limited_color_range = false;
1598                         break;
1599                 case INTEL_BROADCAST_RGB_LIMITED:
1600                         intel_hdmi->color_range_auto = false;
1601                         intel_hdmi->limited_color_range = true;
1602                         break;
1603                 default:
1604                         return -EINVAL;
1605                 }
1606
1607                 if (old_auto == intel_hdmi->color_range_auto &&
1608                     old_range == intel_hdmi->limited_color_range)
1609                         return 0;
1610
1611                 goto done;
1612         }
1613
1614         if (property == connector->dev->mode_config.aspect_ratio_property) {
1615                 switch (val) {
1616                 case DRM_MODE_PICTURE_ASPECT_NONE:
1617                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
1618                         break;
1619                 case DRM_MODE_PICTURE_ASPECT_4_3:
1620                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_4_3;
1621                         break;
1622                 case DRM_MODE_PICTURE_ASPECT_16_9:
1623                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_16_9;
1624                         break;
1625                 default:
1626                         return -EINVAL;
1627                 }
1628                 goto done;
1629         }
1630
1631         return -EINVAL;
1632
1633 done:
1634         if (intel_dig_port->base.base.crtc)
1635                 intel_crtc_restore_mode(intel_dig_port->base.base.crtc);
1636
1637         return 0;
1638 }
1639
1640 static void intel_hdmi_pre_enable(struct intel_encoder *encoder,
1641                                   struct intel_crtc_state *pipe_config,
1642                                   struct drm_connector_state *conn_state)
1643 {
1644         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1645         const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
1646
1647         intel_hdmi_prepare(encoder);
1648
1649         intel_hdmi->set_infoframes(&encoder->base,
1650                                    pipe_config->has_hdmi_sink,
1651                                    adjusted_mode);
1652 }
1653
1654 static void vlv_hdmi_pre_enable(struct intel_encoder *encoder,
1655                                 struct intel_crtc_state *pipe_config,
1656                                 struct drm_connector_state *conn_state)
1657 {
1658         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1659         struct intel_hdmi *intel_hdmi = &dport->hdmi;
1660         struct drm_device *dev = encoder->base.dev;
1661         struct drm_i915_private *dev_priv = to_i915(dev);
1662         const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
1663
1664         vlv_phy_pre_encoder_enable(encoder);
1665
1666         /* HDMI 1.0V-2dB */
1667         vlv_set_phy_signal_level(encoder, 0x2b245f5f, 0x00002000, 0x5578b83a,
1668                                  0x2b247878);
1669
1670         intel_hdmi->set_infoframes(&encoder->base,
1671                                    pipe_config->has_hdmi_sink,
1672                                    adjusted_mode);
1673
1674         g4x_enable_hdmi(encoder, pipe_config, conn_state);
1675
1676         vlv_wait_port_ready(dev_priv, dport, 0x0);
1677 }
1678
1679 static void vlv_hdmi_pre_pll_enable(struct intel_encoder *encoder,
1680                                     struct intel_crtc_state *pipe_config,
1681                                     struct drm_connector_state *conn_state)
1682 {
1683         intel_hdmi_prepare(encoder);
1684
1685         vlv_phy_pre_pll_enable(encoder);
1686 }
1687
1688 static void chv_hdmi_pre_pll_enable(struct intel_encoder *encoder,
1689                                     struct intel_crtc_state *pipe_config,
1690                                     struct drm_connector_state *conn_state)
1691 {
1692         intel_hdmi_prepare(encoder);
1693
1694         chv_phy_pre_pll_enable(encoder);
1695 }
1696
1697 static void chv_hdmi_post_pll_disable(struct intel_encoder *encoder,
1698                                       struct intel_crtc_state *old_crtc_state,
1699                                       struct drm_connector_state *old_conn_state)
1700 {
1701         chv_phy_post_pll_disable(encoder);
1702 }
1703
1704 static void vlv_hdmi_post_disable(struct intel_encoder *encoder,
1705                                   struct intel_crtc_state *old_crtc_state,
1706                                   struct drm_connector_state *old_conn_state)
1707 {
1708         /* Reset lanes to avoid HDMI flicker (VLV w/a) */
1709         vlv_phy_reset_lanes(encoder);
1710 }
1711
1712 static void chv_hdmi_post_disable(struct intel_encoder *encoder,
1713                                   struct intel_crtc_state *old_crtc_state,
1714                                   struct drm_connector_state *old_conn_state)
1715 {
1716         struct drm_device *dev = encoder->base.dev;
1717         struct drm_i915_private *dev_priv = to_i915(dev);
1718
1719         mutex_lock(&dev_priv->sb_lock);
1720
1721         /* Assert data lane reset */
1722         chv_data_lane_soft_reset(encoder, true);
1723
1724         mutex_unlock(&dev_priv->sb_lock);
1725 }
1726
1727 static void chv_hdmi_pre_enable(struct intel_encoder *encoder,
1728                                 struct intel_crtc_state *pipe_config,
1729                                 struct drm_connector_state *conn_state)
1730 {
1731         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1732         struct intel_hdmi *intel_hdmi = &dport->hdmi;
1733         struct drm_device *dev = encoder->base.dev;
1734         struct drm_i915_private *dev_priv = to_i915(dev);
1735         struct intel_crtc *intel_crtc =
1736                 to_intel_crtc(encoder->base.crtc);
1737         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1738
1739         chv_phy_pre_encoder_enable(encoder);
1740
1741         /* FIXME: Program the support xxx V-dB */
1742         /* Use 800mV-0dB */
1743         chv_set_phy_signal_level(encoder, 128, 102, false);
1744
1745         intel_hdmi->set_infoframes(&encoder->base,
1746                                    intel_crtc->config->has_hdmi_sink,
1747                                    adjusted_mode);
1748
1749         g4x_enable_hdmi(encoder, pipe_config, conn_state);
1750
1751         vlv_wait_port_ready(dev_priv, dport, 0x0);
1752
1753         /* Second common lane will stay alive on its own now */
1754         chv_phy_release_cl2_override(encoder);
1755 }
1756
1757 static void intel_hdmi_destroy(struct drm_connector *connector)
1758 {
1759         kfree(to_intel_connector(connector)->detect_edid);
1760         drm_connector_cleanup(connector);
1761         kfree(connector);
1762 }
1763
1764 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
1765         .dpms = drm_atomic_helper_connector_dpms,
1766         .detect = intel_hdmi_detect,
1767         .force = intel_hdmi_force,
1768         .fill_modes = drm_helper_probe_single_connector_modes,
1769         .set_property = intel_hdmi_set_property,
1770         .atomic_get_property = intel_connector_atomic_get_property,
1771         .late_register = intel_connector_register,
1772         .early_unregister = intel_connector_unregister,
1773         .destroy = intel_hdmi_destroy,
1774         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1775         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1776 };
1777
1778 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
1779         .get_modes = intel_hdmi_get_modes,
1780         .mode_valid = intel_hdmi_mode_valid,
1781 };
1782
1783 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
1784         .destroy = intel_encoder_destroy,
1785 };
1786
1787 static void
1788 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
1789 {
1790         intel_attach_force_audio_property(connector);
1791         intel_attach_broadcast_rgb_property(connector);
1792         intel_hdmi->color_range_auto = true;
1793         intel_attach_aspect_ratio_property(connector);
1794         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
1795 }
1796
1797 static u8 intel_hdmi_ddc_pin(struct drm_i915_private *dev_priv,
1798                              enum port port)
1799 {
1800         const struct ddi_vbt_port_info *info =
1801                 &dev_priv->vbt.ddi_port_info[port];
1802         u8 ddc_pin;
1803
1804         if (info->alternate_ddc_pin) {
1805                 DRM_DEBUG_KMS("Using DDC pin 0x%x for port %c (VBT)\n",
1806                               info->alternate_ddc_pin, port_name(port));
1807                 return info->alternate_ddc_pin;
1808         }
1809
1810         switch (port) {
1811         case PORT_B:
1812                 if (IS_BROXTON(dev_priv))
1813                         ddc_pin = GMBUS_PIN_1_BXT;
1814                 else
1815                         ddc_pin = GMBUS_PIN_DPB;
1816                 break;
1817         case PORT_C:
1818                 if (IS_BROXTON(dev_priv))
1819                         ddc_pin = GMBUS_PIN_2_BXT;
1820                 else
1821                         ddc_pin = GMBUS_PIN_DPC;
1822                 break;
1823         case PORT_D:
1824                 if (IS_CHERRYVIEW(dev_priv))
1825                         ddc_pin = GMBUS_PIN_DPD_CHV;
1826                 else
1827                         ddc_pin = GMBUS_PIN_DPD;
1828                 break;
1829         default:
1830                 MISSING_CASE(port);
1831                 ddc_pin = GMBUS_PIN_DPB;
1832                 break;
1833         }
1834
1835         DRM_DEBUG_KMS("Using DDC pin 0x%x for port %c (platform default)\n",
1836                       ddc_pin, port_name(port));
1837
1838         return ddc_pin;
1839 }
1840
1841 void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
1842                                struct intel_connector *intel_connector)
1843 {
1844         struct drm_connector *connector = &intel_connector->base;
1845         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
1846         struct intel_encoder *intel_encoder = &intel_dig_port->base;
1847         struct drm_device *dev = intel_encoder->base.dev;
1848         struct drm_i915_private *dev_priv = to_i915(dev);
1849         enum port port = intel_dig_port->port;
1850
1851         DRM_DEBUG_KMS("Adding HDMI connector on port %c\n",
1852                       port_name(port));
1853
1854         if (WARN(intel_dig_port->max_lanes < 4,
1855                  "Not enough lanes (%d) for HDMI on port %c\n",
1856                  intel_dig_port->max_lanes, port_name(port)))
1857                 return;
1858
1859         drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
1860                            DRM_MODE_CONNECTOR_HDMIA);
1861         drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
1862
1863         connector->interlace_allowed = 1;
1864         connector->doublescan_allowed = 0;
1865         connector->stereo_allowed = 1;
1866
1867         intel_hdmi->ddc_bus = intel_hdmi_ddc_pin(dev_priv, port);
1868
1869         switch (port) {
1870         case PORT_B:
1871                 /*
1872                  * On BXT A0/A1, sw needs to activate DDIA HPD logic and
1873                  * interrupts to check the external panel connection.
1874                  */
1875                 if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
1876                         intel_encoder->hpd_pin = HPD_PORT_A;
1877                 else
1878                         intel_encoder->hpd_pin = HPD_PORT_B;
1879                 break;
1880         case PORT_C:
1881                 intel_encoder->hpd_pin = HPD_PORT_C;
1882                 break;
1883         case PORT_D:
1884                 intel_encoder->hpd_pin = HPD_PORT_D;
1885                 break;
1886         case PORT_E:
1887                 intel_encoder->hpd_pin = HPD_PORT_E;
1888                 break;
1889         default:
1890                 MISSING_CASE(port);
1891                 return;
1892         }
1893
1894         if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
1895                 intel_hdmi->write_infoframe = vlv_write_infoframe;
1896                 intel_hdmi->set_infoframes = vlv_set_infoframes;
1897                 intel_hdmi->infoframe_enabled = vlv_infoframe_enabled;
1898         } else if (IS_G4X(dev_priv)) {
1899                 intel_hdmi->write_infoframe = g4x_write_infoframe;
1900                 intel_hdmi->set_infoframes = g4x_set_infoframes;
1901                 intel_hdmi->infoframe_enabled = g4x_infoframe_enabled;
1902         } else if (HAS_DDI(dev_priv)) {
1903                 intel_hdmi->write_infoframe = hsw_write_infoframe;
1904                 intel_hdmi->set_infoframes = hsw_set_infoframes;
1905                 intel_hdmi->infoframe_enabled = hsw_infoframe_enabled;
1906         } else if (HAS_PCH_IBX(dev_priv)) {
1907                 intel_hdmi->write_infoframe = ibx_write_infoframe;
1908                 intel_hdmi->set_infoframes = ibx_set_infoframes;
1909                 intel_hdmi->infoframe_enabled = ibx_infoframe_enabled;
1910         } else {
1911                 intel_hdmi->write_infoframe = cpt_write_infoframe;
1912                 intel_hdmi->set_infoframes = cpt_set_infoframes;
1913                 intel_hdmi->infoframe_enabled = cpt_infoframe_enabled;
1914         }
1915
1916         if (HAS_DDI(dev_priv))
1917                 intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
1918         else
1919                 intel_connector->get_hw_state = intel_connector_get_hw_state;
1920
1921         intel_hdmi_add_properties(intel_hdmi, connector);
1922
1923         intel_connector_attach_encoder(intel_connector, intel_encoder);
1924         intel_hdmi->attached_connector = intel_connector;
1925
1926         /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
1927          * 0xd.  Failure to do so will result in spurious interrupts being
1928          * generated on the port when a cable is not attached.
1929          */
1930         if (IS_G4X(dev_priv) && !IS_GM45(dev_priv)) {
1931                 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
1932                 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
1933         }
1934 }
1935
1936 void intel_hdmi_init(struct drm_device *dev,
1937                      i915_reg_t hdmi_reg, enum port port)
1938 {
1939         struct drm_i915_private *dev_priv = to_i915(dev);
1940         struct intel_digital_port *intel_dig_port;
1941         struct intel_encoder *intel_encoder;
1942         struct intel_connector *intel_connector;
1943
1944         intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL);
1945         if (!intel_dig_port)
1946                 return;
1947
1948         intel_connector = intel_connector_alloc();
1949         if (!intel_connector) {
1950                 kfree(intel_dig_port);
1951                 return;
1952         }
1953
1954         intel_encoder = &intel_dig_port->base;
1955
1956         drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
1957                          DRM_MODE_ENCODER_TMDS, "HDMI %c", port_name(port));
1958
1959         intel_encoder->compute_config = intel_hdmi_compute_config;
1960         if (HAS_PCH_SPLIT(dev_priv)) {
1961                 intel_encoder->disable = pch_disable_hdmi;
1962                 intel_encoder->post_disable = pch_post_disable_hdmi;
1963         } else {
1964                 intel_encoder->disable = g4x_disable_hdmi;
1965         }
1966         intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
1967         intel_encoder->get_config = intel_hdmi_get_config;
1968         if (IS_CHERRYVIEW(dev_priv)) {
1969                 intel_encoder->pre_pll_enable = chv_hdmi_pre_pll_enable;
1970                 intel_encoder->pre_enable = chv_hdmi_pre_enable;
1971                 intel_encoder->enable = vlv_enable_hdmi;
1972                 intel_encoder->post_disable = chv_hdmi_post_disable;
1973                 intel_encoder->post_pll_disable = chv_hdmi_post_pll_disable;
1974         } else if (IS_VALLEYVIEW(dev_priv)) {
1975                 intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
1976                 intel_encoder->pre_enable = vlv_hdmi_pre_enable;
1977                 intel_encoder->enable = vlv_enable_hdmi;
1978                 intel_encoder->post_disable = vlv_hdmi_post_disable;
1979         } else {
1980                 intel_encoder->pre_enable = intel_hdmi_pre_enable;
1981                 if (HAS_PCH_CPT(dev_priv))
1982                         intel_encoder->enable = cpt_enable_hdmi;
1983                 else if (HAS_PCH_IBX(dev_priv))
1984                         intel_encoder->enable = ibx_enable_hdmi;
1985                 else
1986                         intel_encoder->enable = g4x_enable_hdmi;
1987         }
1988
1989         intel_encoder->type = INTEL_OUTPUT_HDMI;
1990         intel_encoder->port = port;
1991         if (IS_CHERRYVIEW(dev_priv)) {
1992                 if (port == PORT_D)
1993                         intel_encoder->crtc_mask = 1 << 2;
1994                 else
1995                         intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
1996         } else {
1997                 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
1998         }
1999         intel_encoder->cloneable = 1 << INTEL_OUTPUT_ANALOG;
2000         /*
2001          * BSpec is unclear about HDMI+HDMI cloning on g4x, but it seems
2002          * to work on real hardware. And since g4x can send infoframes to
2003          * only one port anyway, nothing is lost by allowing it.
2004          */
2005         if (IS_G4X(dev_priv))
2006                 intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
2007
2008         intel_dig_port->port = port;
2009         intel_dig_port->hdmi.hdmi_reg = hdmi_reg;
2010         intel_dig_port->dp.output_reg = INVALID_MMIO_REG;
2011         intel_dig_port->max_lanes = 4;
2012
2013         intel_hdmi_init_connector(intel_dig_port, intel_connector);
2014 }