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                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", 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                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", 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                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
 112                 return 0;
 113         }
 114 }
 115
 116 static u32 hsw_dip_data_reg(struct drm_i915_private *dev_priv,
 117                             enum transcoder cpu_transcoder,
 118                             enum hdmi_infoframe_type type,
 119                             int i)
 120 {
 121         switch (type) {
 122         case HDMI_INFOFRAME_TYPE_AVI:
 123                 return HSW_TVIDEO_DIP_AVI_DATA(cpu_transcoder, i);
 124         case HDMI_INFOFRAME_TYPE_SPD:
 125                 return HSW_TVIDEO_DIP_SPD_DATA(cpu_transcoder, i);
 126         case HDMI_INFOFRAME_TYPE_VENDOR:
 127                 return HSW_TVIDEO_DIP_VS_DATA(cpu_transcoder, i);
 128         default:
 129                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
 130                 return 0;
 131         }
 132 }
 133
 134 static void g4x_write_infoframe(struct drm_encoder *encoder,
 135                                 enum hdmi_infoframe_type type,
 136                                 const void *frame, ssize_t len)
 137 {
 138         const uint32_t *data = frame;
 139         struct drm_device *dev = encoder->dev;
 140         struct drm_i915_private *dev_priv = dev->dev_private;
 141         u32 val = I915_READ(VIDEO_DIP_CTL);
 142         int i;
 143
 144         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 145
 146         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 147         val |= g4x_infoframe_index(type);
 148
 149         val &= ~g4x_infoframe_enable(type);
 150
 151         I915_WRITE(VIDEO_DIP_CTL, val);
 152
 153         mmiowb();
 154         for (i = 0; i < len; i += 4) {
 155                 I915_WRITE(VIDEO_DIP_DATA, *data);
 156                 data++;
 157         }
 158         /* Write every possible data byte to force correct ECC calculation. */
 159         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 160                 I915_WRITE(VIDEO_DIP_DATA, 0);
 161         mmiowb();
 162
 163         val |= g4x_infoframe_enable(type);
 164         val &= ~VIDEO_DIP_FREQ_MASK;
 165         val |= VIDEO_DIP_FREQ_VSYNC;
 166
 167         I915_WRITE(VIDEO_DIP_CTL, val);
 168         POSTING_READ(VIDEO_DIP_CTL);
 169 }
 170
 171 static bool g4x_infoframe_enabled(struct drm_encoder *encoder)
 172 {
 173         struct drm_device *dev = encoder->dev;
 174         struct drm_i915_private *dev_priv = dev->dev_private;
 175         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 176         u32 val = I915_READ(VIDEO_DIP_CTL);
 177
 178         if ((val & VIDEO_DIP_ENABLE) == 0)
 179                 return false;
 180
 181         if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(intel_dig_port->port))
 182                 return false;
 183
 184         return val & (VIDEO_DIP_ENABLE_AVI |
 185                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
 186 }
 187
 188 static void ibx_write_infoframe(struct drm_encoder *encoder,
 189                                 enum hdmi_infoframe_type type,
 190                                 const void *frame, ssize_t len)
 191 {
 192         const uint32_t *data = frame;
 193         struct drm_device *dev = encoder->dev;
 194         struct drm_i915_private *dev_priv = dev->dev_private;
 195         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 196         int i, reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 197         u32 val = I915_READ(reg);
 198
 199         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 200
 201         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 202         val |= g4x_infoframe_index(type);
 203
 204         val &= ~g4x_infoframe_enable(type);
 205
 206         I915_WRITE(reg, val);
 207
 208         mmiowb();
 209         for (i = 0; i < len; i += 4) {
 210                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 211                 data++;
 212         }
 213         /* Write every possible data byte to force correct ECC calculation. */
 214         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 215                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
 216         mmiowb();
 217
 218         val |= g4x_infoframe_enable(type);
 219         val &= ~VIDEO_DIP_FREQ_MASK;
 220         val |= VIDEO_DIP_FREQ_VSYNC;
 221
 222         I915_WRITE(reg, val);
 223         POSTING_READ(reg);
 224 }
 225
 226 static bool ibx_infoframe_enabled(struct drm_encoder *encoder)
 227 {
 228         struct drm_device *dev = encoder->dev;
 229         struct drm_i915_private *dev_priv = dev->dev_private;
 230         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 231         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 232         int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 233         u32 val = I915_READ(reg);
 234
 235         if ((val & VIDEO_DIP_ENABLE) == 0)
 236                 return false;
 237
 238         if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(intel_dig_port->port))
 239                 return false;
 240
 241         return val & (VIDEO_DIP_ENABLE_AVI |
 242                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 243                       VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 244 }
 245
 246 static void cpt_write_infoframe(struct drm_encoder *encoder,
 247                                 enum hdmi_infoframe_type type,
 248                                 const void *frame, ssize_t len)
 249 {
 250         const uint32_t *data = frame;
 251         struct drm_device *dev = encoder->dev;
 252         struct drm_i915_private *dev_priv = dev->dev_private;
 253         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 254         int i, reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 255         u32 val = I915_READ(reg);
 256
 257         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 258
 259         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 260         val |= g4x_infoframe_index(type);
 261
 262         /* The DIP control register spec says that we need to update the AVI
 263          * infoframe without clearing its enable bit */
 264         if (type != HDMI_INFOFRAME_TYPE_AVI)
 265                 val &= ~g4x_infoframe_enable(type);
 266
 267         I915_WRITE(reg, val);
 268
 269         mmiowb();
 270         for (i = 0; i < len; i += 4) {
 271                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 272                 data++;
 273         }
 274         /* Write every possible data byte to force correct ECC calculation. */
 275         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 276                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
 277         mmiowb();
 278
 279         val |= g4x_infoframe_enable(type);
 280         val &= ~VIDEO_DIP_FREQ_MASK;
 281         val |= VIDEO_DIP_FREQ_VSYNC;
 282
 283         I915_WRITE(reg, val);
 284         POSTING_READ(reg);
 285 }
 286
 287 static bool cpt_infoframe_enabled(struct drm_encoder *encoder)
 288 {
 289         struct drm_device *dev = encoder->dev;
 290         struct drm_i915_private *dev_priv = dev->dev_private;
 291         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 292         int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 293         u32 val = I915_READ(reg);
 294
 295         if ((val & VIDEO_DIP_ENABLE) == 0)
 296                 return false;
 297
 298         return val & (VIDEO_DIP_ENABLE_AVI |
 299                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 300                       VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 301 }
 302
 303 static void vlv_write_infoframe(struct drm_encoder *encoder,
 304                                 enum hdmi_infoframe_type type,
 305                                 const void *frame, ssize_t len)
 306 {
 307         const uint32_t *data = frame;
 308         struct drm_device *dev = encoder->dev;
 309         struct drm_i915_private *dev_priv = dev->dev_private;
 310         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 311         int i, reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
 312         u32 val = I915_READ(reg);
 313
 314         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 315
 316         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 317         val |= g4x_infoframe_index(type);
 318
 319         val &= ~g4x_infoframe_enable(type);
 320
 321         I915_WRITE(reg, val);
 322
 323         mmiowb();
 324         for (i = 0; i < len; i += 4) {
 325                 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 326                 data++;
 327         }
 328         /* Write every possible data byte to force correct ECC calculation. */
 329         for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
 330                 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
 331         mmiowb();
 332
 333         val |= g4x_infoframe_enable(type);
 334         val &= ~VIDEO_DIP_FREQ_MASK;
 335         val |= VIDEO_DIP_FREQ_VSYNC;
 336
 337         I915_WRITE(reg, val);
 338         POSTING_READ(reg);
 339 }
 340
 341 static bool vlv_infoframe_enabled(struct drm_encoder *encoder)
 342 {
 343         struct drm_device *dev = encoder->dev;
 344         struct drm_i915_private *dev_priv = dev->dev_private;
 345         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 346         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 347         int reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
 348         u32 val = I915_READ(reg);
 349
 350         if ((val & VIDEO_DIP_ENABLE) == 0)
 351                 return false;
 352
 353         if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(intel_dig_port->port))
 354                 return false;
 355
 356         return val & (VIDEO_DIP_ENABLE_AVI |
 357                       VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 358                       VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 359 }
 360
 361 static void hsw_write_infoframe(struct drm_encoder *encoder,
 362                                 enum hdmi_infoframe_type type,
 363                                 const void *frame, ssize_t len)
 364 {
 365         const uint32_t *data = frame;
 366         struct drm_device *dev = encoder->dev;
 367         struct drm_i915_private *dev_priv = dev->dev_private;
 368         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 369         enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
 370         u32 ctl_reg = HSW_TVIDEO_DIP_CTL(cpu_transcoder);
 371         u32 data_reg;
 372         int i;
 373         u32 val = I915_READ(ctl_reg);
 374
 375         data_reg = hsw_dip_data_reg(dev_priv, cpu_transcoder, type, 0);
 376         if (data_reg == 0)
 377                 return;
 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 {
 401         struct drm_device *dev = encoder->dev;
 402         struct drm_i915_private *dev_priv = dev->dev_private;
 403         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 404         u32 ctl_reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config->cpu_transcoder);
 405         u32 val = I915_READ(ctl_reg);
 406
 407         return val & (VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
 408                       VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
 409                       VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW);
 410 }
 411
 412 /*
 413  * The data we write to the DIP data buffer registers is 1 byte bigger than the
 414  * HDMI infoframe size because of an ECC/reserved byte at position 3 (starting
 415  * at 0). It's also a byte used by DisplayPort so the same DIP registers can be
 416  * used for both technologies.
 417  *
 418  * DW0: Reserved/ECC/DP | HB2 | HB1 | HB0
 419  * DW1:       DB3       | DB2 | DB1 | DB0
 420  * DW2:       DB7       | DB6 | DB5 | DB4
 421  * DW3: ...
 422  *
 423  * (HB is Header Byte, DB is Data Byte)
 424  *
 425  * The hdmi pack() functions don't know about that hardware specific hole so we
 426  * trick them by giving an offset into the buffer and moving back the header
 427  * bytes by one.
 428  */
 429 static void intel_write_infoframe(struct drm_encoder *encoder,
 430                                   union hdmi_infoframe *frame)
 431 {
 432         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 433         uint8_t buffer[VIDEO_DIP_DATA_SIZE];
 434         ssize_t len;
 435
 436         /* see comment above for the reason for this offset */
 437         len = hdmi_infoframe_pack(frame, buffer + 1, sizeof(buffer) - 1);
 438         if (len < 0)
 439                 return;
 440
 441         /* Insert the 'hole' (see big comment above) at position 3 */
 442         buffer[0] = buffer[1];
 443         buffer[1] = buffer[2];
 444         buffer[2] = buffer[3];
 445         buffer[3] = 0;
 446         len++;
 447
 448         intel_hdmi->write_infoframe(encoder, frame->any.type, buffer, len);
 449 }
 450
 451 static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
 452                                          const struct drm_display_mode *adjusted_mode)
 453 {
 454         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 455         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 456         union hdmi_infoframe frame;
 457         int ret;
 458
 459         ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
 460                                                        adjusted_mode);
 461         if (ret < 0) {
 462                 DRM_ERROR("couldn't fill AVI infoframe\n");
 463                 return;
 464         }
 465
 466         if (intel_hdmi->rgb_quant_range_selectable) {
 467                 if (intel_crtc->config->limited_color_range)
 468                         frame.avi.quantization_range =
 469                                 HDMI_QUANTIZATION_RANGE_LIMITED;
 470                 else
 471                         frame.avi.quantization_range =
 472                                 HDMI_QUANTIZATION_RANGE_FULL;
 473         }
 474
 475         intel_write_infoframe(encoder, &frame);
 476 }
 477
 478 static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
 479 {
 480         union hdmi_infoframe frame;
 481         int ret;
 482
 483         ret = hdmi_spd_infoframe_init(&frame.spd, "Intel", "Integrated gfx");
 484         if (ret < 0) {
 485                 DRM_ERROR("couldn't fill SPD infoframe\n");
 486                 return;
 487         }
 488
 489         frame.spd.sdi = HDMI_SPD_SDI_PC;
 490
 491         intel_write_infoframe(encoder, &frame);
 492 }
 493
 494 static void
 495 intel_hdmi_set_hdmi_infoframe(struct drm_encoder *encoder,
 496                               const struct drm_display_mode *adjusted_mode)
 497 {
 498         union hdmi_infoframe frame;
 499         int ret;
 500
 501         ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
 502                                                           adjusted_mode);
 503         if (ret < 0)
 504                 return;
 505
 506         intel_write_infoframe(encoder, &frame);
 507 }
 508
 509 static void g4x_set_infoframes(struct drm_encoder *encoder,
 510                                bool enable,
 511                                const struct drm_display_mode *adjusted_mode)
 512 {
 513         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 514         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 515         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
 516         u32 reg = VIDEO_DIP_CTL;
 517         u32 val = I915_READ(reg);
 518         u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
 519
 520         assert_hdmi_port_disabled(intel_hdmi);
 521
 522         /* If the registers were not initialized yet, they might be zeroes,
 523          * which means we're selecting the AVI DIP and we're setting its
 524          * frequency to once. This seems to really confuse the HW and make
 525          * things stop working (the register spec says the AVI always needs to
 526          * be sent every VSync). So here we avoid writing to the register more
 527          * than we need and also explicitly select the AVI DIP and explicitly
 528          * set its frequency to every VSync. Avoiding to write it twice seems to
 529          * be enough to solve the problem, but being defensive shouldn't hurt us
 530          * either. */
 531         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 532
 533         if (!enable) {
 534                 if (!(val & VIDEO_DIP_ENABLE))
 535                         return;
 536                 if (port != (val & VIDEO_DIP_PORT_MASK)) {
 537                         DRM_DEBUG_KMS("video DIP still enabled on port %c\n",
 538                                       (val & VIDEO_DIP_PORT_MASK) >> 29);
 539                         return;
 540                 }
 541                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 542                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
 543                 I915_WRITE(reg, val);
 544                 POSTING_READ(reg);
 545                 return;
 546         }
 547
 548         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 549                 if (val & VIDEO_DIP_ENABLE) {
 550                         DRM_DEBUG_KMS("video DIP already enabled on port %c\n",
 551                                       (val & VIDEO_DIP_PORT_MASK) >> 29);
 552                         return;
 553                 }
 554                 val &= ~VIDEO_DIP_PORT_MASK;
 555                 val |= port;
 556         }
 557
 558         val |= VIDEO_DIP_ENABLE;
 559         val &= ~(VIDEO_DIP_ENABLE_AVI |
 560                  VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
 561
 562         I915_WRITE(reg, val);
 563         POSTING_READ(reg);
 564
 565         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 566         intel_hdmi_set_spd_infoframe(encoder);
 567         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 568 }
 569
 570 static bool hdmi_sink_is_deep_color(struct drm_encoder *encoder)
 571 {
 572         struct drm_device *dev = encoder->dev;
 573         struct drm_connector *connector;
 574
 575         WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
 576
 577         /*
 578          * HDMI cloning is only supported on g4x which doesn't
 579          * support deep color or GCP infoframes anyway so no
 580          * need to worry about multiple HDMI sinks here.
 581          */
 582         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 583                 if (connector->encoder == encoder)
 584                         return connector->display_info.bpc > 8;
 585
 586         return false;
 587 }
 588
 589 /*
 590  * Determine if default_phase=1 can be indicated in the GCP infoframe.
 591  *
 592  * From HDMI specification 1.4a:
 593  * - The first pixel of each Video Data Period shall always have a pixel packing phase of 0
 594  * - The first pixel following each Video Data Period shall have a pixel packing phase of 0
 595  * - The PP bits shall be constant for all GCPs and will be equal to the last packing phase
 596  * - The first pixel following every transition of HSYNC or VSYNC shall have a pixel packing
 597  *   phase of 0
 598  */
 599 static bool gcp_default_phase_possible(int pipe_bpp,
 600                                        const struct drm_display_mode *mode)
 601 {
 602         unsigned int pixels_per_group;
 603
 604         switch (pipe_bpp) {
 605         case 30:
 606                 /* 4 pixels in 5 clocks */
 607                 pixels_per_group = 4;
 608                 break;
 609         case 36:
 610                 /* 2 pixels in 3 clocks */
 611                 pixels_per_group = 2;
 612                 break;
 613         case 48:
 614                 /* 1 pixel in 2 clocks */
 615                 pixels_per_group = 1;
 616                 break;
 617         default:
 618                 /* phase information not relevant for 8bpc */
 619                 return false;
 620         }
 621
 622         return mode->crtc_hdisplay % pixels_per_group == 0 &&
 623                 mode->crtc_htotal % pixels_per_group == 0 &&
 624                 mode->crtc_hblank_start % pixels_per_group == 0 &&
 625                 mode->crtc_hblank_end % pixels_per_group == 0 &&
 626                 mode->crtc_hsync_start % pixels_per_group == 0 &&
 627                 mode->crtc_hsync_end % pixels_per_group == 0 &&
 628                 ((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0 ||
 629                  mode->crtc_htotal/2 % pixels_per_group == 0);
 630 }
 631
 632 static bool intel_hdmi_set_gcp_infoframe(struct drm_encoder *encoder)
 633 {
 634         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 635         struct intel_crtc *crtc = to_intel_crtc(encoder->crtc);
 636         u32 reg, val = 0;
 637
 638         if (HAS_DDI(dev_priv))
 639                 reg = HSW_TVIDEO_DIP_GCP(crtc->config->cpu_transcoder);
 640         else if (IS_VALLEYVIEW(dev_priv))
 641                 reg = VLV_TVIDEO_DIP_GCP(crtc->pipe);
 642         else if (HAS_PCH_SPLIT(dev_priv->dev))
 643                 reg = TVIDEO_DIP_GCP(crtc->pipe);
 644         else
 645                 return false;
 646
 647         /* Indicate color depth whenever the sink supports deep color */
 648         if (hdmi_sink_is_deep_color(encoder))
 649                 val |= GCP_COLOR_INDICATION;
 650
 651         /* Enable default_phase whenever the display mode is suitably aligned */
 652         if (gcp_default_phase_possible(crtc->config->pipe_bpp,
 653                                        &crtc->config->base.adjusted_mode))
 654                 val |= GCP_DEFAULT_PHASE_ENABLE;
 655
 656         I915_WRITE(reg, val);
 657
 658         return val != 0;
 659 }
 660
 661 static void ibx_set_infoframes(struct drm_encoder *encoder,
 662                                bool enable,
 663                                const struct drm_display_mode *adjusted_mode)
 664 {
 665         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 666         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 667         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 668         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
 669         u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 670         u32 val = I915_READ(reg);
 671         u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
 672
 673         assert_hdmi_port_disabled(intel_hdmi);
 674
 675         /* See the big comment in g4x_set_infoframes() */
 676         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 677
 678         if (!enable) {
 679                 if (!(val & VIDEO_DIP_ENABLE))
 680                         return;
 681                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 682                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 683                          VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 684                 I915_WRITE(reg, val);
 685                 POSTING_READ(reg);
 686                 return;
 687         }
 688
 689         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 690                 WARN(val & VIDEO_DIP_ENABLE,
 691                      "DIP already enabled on port %c\n",
 692                      (val & VIDEO_DIP_PORT_MASK) >> 29);
 693                 val &= ~VIDEO_DIP_PORT_MASK;
 694                 val |= port;
 695         }
 696
 697         val |= VIDEO_DIP_ENABLE;
 698         val &= ~(VIDEO_DIP_ENABLE_AVI |
 699                  VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 700                  VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 701
 702         if (intel_hdmi_set_gcp_infoframe(encoder))
 703                 val |= VIDEO_DIP_ENABLE_GCP;
 704
 705         I915_WRITE(reg, val);
 706         POSTING_READ(reg);
 707
 708         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 709         intel_hdmi_set_spd_infoframe(encoder);
 710         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 711 }
 712
 713 static void cpt_set_infoframes(struct drm_encoder *encoder,
 714                                bool enable,
 715                                const struct drm_display_mode *adjusted_mode)
 716 {
 717         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 718         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 719         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 720         u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 721         u32 val = I915_READ(reg);
 722
 723         assert_hdmi_port_disabled(intel_hdmi);
 724
 725         /* See the big comment in g4x_set_infoframes() */
 726         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 727
 728         if (!enable) {
 729                 if (!(val & VIDEO_DIP_ENABLE))
 730                         return;
 731                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 732                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 733                          VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 734                 I915_WRITE(reg, val);
 735                 POSTING_READ(reg);
 736                 return;
 737         }
 738
 739         /* Set both together, unset both together: see the spec. */
 740         val |= VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI;
 741         val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 742                  VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 743
 744         if (intel_hdmi_set_gcp_infoframe(encoder))
 745                 val |= VIDEO_DIP_ENABLE_GCP;
 746
 747         I915_WRITE(reg, val);
 748         POSTING_READ(reg);
 749
 750         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 751         intel_hdmi_set_spd_infoframe(encoder);
 752         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 753 }
 754
 755 static void vlv_set_infoframes(struct drm_encoder *encoder,
 756                                bool enable,
 757                                const struct drm_display_mode *adjusted_mode)
 758 {
 759         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 760         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 761         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 762         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 763         u32 reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
 764         u32 val = I915_READ(reg);
 765         u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
 766
 767         assert_hdmi_port_disabled(intel_hdmi);
 768
 769         /* See the big comment in g4x_set_infoframes() */
 770         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 771
 772         if (!enable) {
 773                 if (!(val & VIDEO_DIP_ENABLE))
 774                         return;
 775                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
 776                          VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 777                          VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 778                 I915_WRITE(reg, val);
 779                 POSTING_READ(reg);
 780                 return;
 781         }
 782
 783         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 784                 WARN(val & VIDEO_DIP_ENABLE,
 785                      "DIP already enabled on port %c\n",
 786                      (val & VIDEO_DIP_PORT_MASK) >> 29);
 787                 val &= ~VIDEO_DIP_PORT_MASK;
 788                 val |= port;
 789         }
 790
 791         val |= VIDEO_DIP_ENABLE;
 792         val &= ~(VIDEO_DIP_ENABLE_AVI |
 793                  VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 794                  VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
 795
 796         if (intel_hdmi_set_gcp_infoframe(encoder))
 797                 val |= VIDEO_DIP_ENABLE_GCP;
 798
 799         I915_WRITE(reg, val);
 800         POSTING_READ(reg);
 801
 802         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 803         intel_hdmi_set_spd_infoframe(encoder);
 804         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 805 }
 806
 807 static void hsw_set_infoframes(struct drm_encoder *encoder,
 808                                bool enable,
 809                                const struct drm_display_mode *adjusted_mode)
 810 {
 811         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 812         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 813         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 814         u32 reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config->cpu_transcoder);
 815         u32 val = I915_READ(reg);
 816
 817         assert_hdmi_port_disabled(intel_hdmi);
 818
 819         val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
 820                  VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
 821                  VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW);
 822
 823         if (!enable) {
 824                 I915_WRITE(reg, val);
 825                 POSTING_READ(reg);
 826                 return;
 827         }
 828
 829         if (intel_hdmi_set_gcp_infoframe(encoder))
 830                 val |= VIDEO_DIP_ENABLE_GCP_HSW;
 831
 832         I915_WRITE(reg, val);
 833         POSTING_READ(reg);
 834
 835         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 836         intel_hdmi_set_spd_infoframe(encoder);
 837         intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
 838 }
 839
 840 static void intel_hdmi_prepare(struct intel_encoder *encoder)
 841 {
 842         struct drm_device *dev = encoder->base.dev;
 843         struct drm_i915_private *dev_priv = dev->dev_private;
 844         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 845         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 846         const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
 847         u32 hdmi_val;
 848
 849         hdmi_val = SDVO_ENCODING_HDMI;
 850         if (!HAS_PCH_SPLIT(dev) && crtc->config->limited_color_range)
 851                 hdmi_val |= HDMI_COLOR_RANGE_16_235;
 852         if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
 853                 hdmi_val |= SDVO_VSYNC_ACTIVE_HIGH;
 854         if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
 855                 hdmi_val |= SDVO_HSYNC_ACTIVE_HIGH;
 856
 857         if (crtc->config->pipe_bpp > 24)
 858                 hdmi_val |= HDMI_COLOR_FORMAT_12bpc;
 859         else
 860                 hdmi_val |= SDVO_COLOR_FORMAT_8bpc;
 861
 862         if (crtc->config->has_hdmi_sink)
 863                 hdmi_val |= HDMI_MODE_SELECT_HDMI;
 864
 865         if (HAS_PCH_CPT(dev))
 866                 hdmi_val |= SDVO_PIPE_SEL_CPT(crtc->pipe);
 867         else if (IS_CHERRYVIEW(dev))
 868                 hdmi_val |= SDVO_PIPE_SEL_CHV(crtc->pipe);
 869         else
 870                 hdmi_val |= SDVO_PIPE_SEL(crtc->pipe);
 871
 872         I915_WRITE(intel_hdmi->hdmi_reg, hdmi_val);
 873         POSTING_READ(intel_hdmi->hdmi_reg);
 874 }
 875
 876 static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
 877                                     enum pipe *pipe)
 878 {
 879         struct drm_device *dev = encoder->base.dev;
 880         struct drm_i915_private *dev_priv = dev->dev_private;
 881         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 882         enum intel_display_power_domain power_domain;
 883         u32 tmp;
 884
 885         power_domain = intel_display_port_power_domain(encoder);
 886         if (!intel_display_power_is_enabled(dev_priv, power_domain))
 887                 return false;
 888
 889         tmp = I915_READ(intel_hdmi->hdmi_reg);
 890
 891         if (!(tmp & SDVO_ENABLE))
 892                 return false;
 893
 894         if (HAS_PCH_CPT(dev))
 895                 *pipe = PORT_TO_PIPE_CPT(tmp);
 896         else if (IS_CHERRYVIEW(dev))
 897                 *pipe = SDVO_PORT_TO_PIPE_CHV(tmp);
 898         else
 899                 *pipe = PORT_TO_PIPE(tmp);
 900
 901         return true;
 902 }
 903
 904 static void intel_hdmi_get_config(struct intel_encoder *encoder,
 905                                   struct intel_crtc_state *pipe_config)
 906 {
 907         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 908         struct drm_device *dev = encoder->base.dev;
 909         struct drm_i915_private *dev_priv = dev->dev_private;
 910         u32 tmp, flags = 0;
 911         int dotclock;
 912
 913         tmp = I915_READ(intel_hdmi->hdmi_reg);
 914
 915         if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
 916                 flags |= DRM_MODE_FLAG_PHSYNC;
 917         else
 918                 flags |= DRM_MODE_FLAG_NHSYNC;
 919
 920         if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
 921                 flags |= DRM_MODE_FLAG_PVSYNC;
 922         else
 923                 flags |= DRM_MODE_FLAG_NVSYNC;
 924
 925         if (tmp & HDMI_MODE_SELECT_HDMI)
 926                 pipe_config->has_hdmi_sink = true;
 927
 928         if (intel_hdmi->infoframe_enabled(&encoder->base))
 929                 pipe_config->has_infoframe = true;
 930
 931         if (tmp & SDVO_AUDIO_ENABLE)
 932                 pipe_config->has_audio = true;
 933
 934         if (!HAS_PCH_SPLIT(dev) &&
 935             tmp & HDMI_COLOR_RANGE_16_235)
 936                 pipe_config->limited_color_range = true;
 937
 938         pipe_config->base.adjusted_mode.flags |= flags;
 939
 940         if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
 941                 dotclock = pipe_config->port_clock * 2 / 3;
 942         else
 943                 dotclock = pipe_config->port_clock;
 944
 945         if (pipe_config->pixel_multiplier)
 946                 dotclock /= pipe_config->pixel_multiplier;
 947
 948         if (HAS_PCH_SPLIT(dev_priv->dev))
 949                 ironlake_check_encoder_dotclock(pipe_config, dotclock);
 950
 951         pipe_config->base.adjusted_mode.crtc_clock = dotclock;
 952 }
 953
 954 static void intel_enable_hdmi_audio(struct intel_encoder *encoder)
 955 {
 956         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 957
 958         WARN_ON(!crtc->config->has_hdmi_sink);
 959         DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
 960                          pipe_name(crtc->pipe));
 961         intel_audio_codec_enable(encoder);
 962 }
 963
 964 static void g4x_enable_hdmi(struct intel_encoder *encoder)
 965 {
 966         struct drm_device *dev = encoder->base.dev;
 967         struct drm_i915_private *dev_priv = dev->dev_private;
 968         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 969         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 970         u32 temp;
 971
 972         temp = I915_READ(intel_hdmi->hdmi_reg);
 973
 974         temp |= SDVO_ENABLE;
 975         if (crtc->config->has_audio)
 976                 temp |= SDVO_AUDIO_ENABLE;
 977
 978         I915_WRITE(intel_hdmi->hdmi_reg, temp);
 979         POSTING_READ(intel_hdmi->hdmi_reg);
 980
 981         if (crtc->config->has_audio)
 982                 intel_enable_hdmi_audio(encoder);
 983 }
 984
 985 static void ibx_enable_hdmi(struct intel_encoder *encoder)
 986 {
 987         struct drm_device *dev = encoder->base.dev;
 988         struct drm_i915_private *dev_priv = dev->dev_private;
 989         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 990         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 991         u32 temp;
 992
 993         temp = I915_READ(intel_hdmi->hdmi_reg);
 994
 995         temp |= SDVO_ENABLE;
 996         if (crtc->config->has_audio)
 997                 temp |= SDVO_AUDIO_ENABLE;
 998
 999         /*
1000          * HW workaround, need to write this twice for issue
1001          * that may result in first write getting masked.
1002          */
1003         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1004         POSTING_READ(intel_hdmi->hdmi_reg);
1005         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1006         POSTING_READ(intel_hdmi->hdmi_reg);
1007
1008         /*
1009          * HW workaround, need to toggle enable bit off and on
1010          * for 12bpc with pixel repeat.
1011          *
1012          * FIXME: BSpec says this should be done at the end of
1013          * of the modeset sequence, so not sure if this isn't too soon.
1014          */
1015         if (crtc->config->pipe_bpp > 24 &&
1016             crtc->config->pixel_multiplier > 1) {
1017                 I915_WRITE(intel_hdmi->hdmi_reg, temp & ~SDVO_ENABLE);
1018                 POSTING_READ(intel_hdmi->hdmi_reg);
1019
1020                 /*
1021                  * HW workaround, need to write this twice for issue
1022                  * that may result in first write getting masked.
1023                  */
1024                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1025                 POSTING_READ(intel_hdmi->hdmi_reg);
1026                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1027                 POSTING_READ(intel_hdmi->hdmi_reg);
1028         }
1029
1030         if (crtc->config->has_audio)
1031                 intel_enable_hdmi_audio(encoder);
1032 }
1033
1034 static void cpt_enable_hdmi(struct intel_encoder *encoder)
1035 {
1036         struct drm_device *dev = encoder->base.dev;
1037         struct drm_i915_private *dev_priv = dev->dev_private;
1038         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1039         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1040         enum pipe pipe = crtc->pipe;
1041         u32 temp;
1042
1043         temp = I915_READ(intel_hdmi->hdmi_reg);
1044
1045         temp |= SDVO_ENABLE;
1046         if (crtc->config->has_audio)
1047                 temp |= SDVO_AUDIO_ENABLE;
1048
1049         /*
1050          * WaEnableHDMI8bpcBefore12bpc:snb,ivb
1051          *
1052          * The procedure for 12bpc is as follows:
1053          * 1. disable HDMI clock gating
1054          * 2. enable HDMI with 8bpc
1055          * 3. enable HDMI with 12bpc
1056          * 4. enable HDMI clock gating
1057          */
1058
1059         if (crtc->config->pipe_bpp > 24) {
1060                 I915_WRITE(TRANS_CHICKEN1(pipe),
1061                            I915_READ(TRANS_CHICKEN1(pipe)) |
1062                            TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
1063
1064                 temp &= ~SDVO_COLOR_FORMAT_MASK;
1065                 temp |= SDVO_COLOR_FORMAT_8bpc;
1066         }
1067
1068         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1069         POSTING_READ(intel_hdmi->hdmi_reg);
1070
1071         if (crtc->config->pipe_bpp > 24) {
1072                 temp &= ~SDVO_COLOR_FORMAT_MASK;
1073                 temp |= HDMI_COLOR_FORMAT_12bpc;
1074
1075                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1076                 POSTING_READ(intel_hdmi->hdmi_reg);
1077
1078                 I915_WRITE(TRANS_CHICKEN1(pipe),
1079                            I915_READ(TRANS_CHICKEN1(pipe)) &
1080                            ~TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
1081         }
1082
1083         if (crtc->config->has_audio)
1084                 intel_enable_hdmi_audio(encoder);
1085 }
1086
1087 static void vlv_enable_hdmi(struct intel_encoder *encoder)
1088 {
1089 }
1090
1091 static void intel_disable_hdmi(struct intel_encoder *encoder)
1092 {
1093         struct drm_device *dev = encoder->base.dev;
1094         struct drm_i915_private *dev_priv = dev->dev_private;
1095         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1096         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1097         u32 temp;
1098
1099         temp = I915_READ(intel_hdmi->hdmi_reg);
1100
1101         temp &= ~(SDVO_ENABLE | SDVO_AUDIO_ENABLE);
1102         I915_WRITE(intel_hdmi->hdmi_reg, temp);
1103         POSTING_READ(intel_hdmi->hdmi_reg);
1104
1105         /*
1106          * HW workaround for IBX, we need to move the port
1107          * to transcoder A after disabling it to allow the
1108          * matching DP port to be enabled on transcoder A.
1109          */
1110         if (HAS_PCH_IBX(dev) && crtc->pipe == PIPE_B) {
1111                 temp &= ~SDVO_PIPE_B_SELECT;
1112                 temp |= SDVO_ENABLE;
1113                 /*
1114                  * HW workaround, need to write this twice for issue
1115                  * that may result in first write getting masked.
1116                  */
1117                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1118                 POSTING_READ(intel_hdmi->hdmi_reg);
1119                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1120                 POSTING_READ(intel_hdmi->hdmi_reg);
1121
1122                 temp &= ~SDVO_ENABLE;
1123                 I915_WRITE(intel_hdmi->hdmi_reg, temp);
1124                 POSTING_READ(intel_hdmi->hdmi_reg);
1125         }
1126
1127         intel_hdmi->set_infoframes(&encoder->base, false, NULL);
1128 }
1129
1130 static void g4x_disable_hdmi(struct intel_encoder *encoder)
1131 {
1132         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1133
1134         if (crtc->config->has_audio)
1135                 intel_audio_codec_disable(encoder);
1136
1137         intel_disable_hdmi(encoder);
1138 }
1139
1140 static void pch_disable_hdmi(struct intel_encoder *encoder)
1141 {
1142         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1143
1144         if (crtc->config->has_audio)
1145                 intel_audio_codec_disable(encoder);
1146 }
1147
1148 static void pch_post_disable_hdmi(struct intel_encoder *encoder)
1149 {
1150         intel_disable_hdmi(encoder);
1151 }
1152
1153 static int hdmi_port_clock_limit(struct intel_hdmi *hdmi, bool respect_dvi_limit)
1154 {
1155         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1156
1157         if ((respect_dvi_limit && !hdmi->has_hdmi_sink) || IS_G4X(dev))
1158                 return 165000;
1159         else if (IS_HASWELL(dev) || INTEL_INFO(dev)->gen >= 8)
1160                 return 300000;
1161         else
1162                 return 225000;
1163 }
1164
1165 static enum drm_mode_status
1166 hdmi_port_clock_valid(struct intel_hdmi *hdmi,
1167                       int clock, bool respect_dvi_limit)
1168 {
1169         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1170
1171         if (clock < 25000)
1172                 return MODE_CLOCK_LOW;
1173         if (clock > hdmi_port_clock_limit(hdmi, respect_dvi_limit))
1174                 return MODE_CLOCK_HIGH;
1175
1176         /* BXT DPLL can't generate 223-240 MHz */
1177         if (IS_BROXTON(dev) && clock > 223333 && clock < 240000)
1178                 return MODE_CLOCK_RANGE;
1179
1180         /* CHV DPLL can't generate 216-240 MHz */
1181         if (IS_CHERRYVIEW(dev) && clock > 216000 && clock < 240000)
1182                 return MODE_CLOCK_RANGE;
1183
1184         return MODE_OK;
1185 }
1186
1187 static enum drm_mode_status
1188 intel_hdmi_mode_valid(struct drm_connector *connector,
1189                       struct drm_display_mode *mode)
1190 {
1191         struct intel_hdmi *hdmi = intel_attached_hdmi(connector);
1192         struct drm_device *dev = intel_hdmi_to_dev(hdmi);
1193         enum drm_mode_status status;
1194         int clock;
1195
1196         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
1197                 return MODE_NO_DBLESCAN;
1198
1199         clock = mode->clock;
1200         if (mode->flags & DRM_MODE_FLAG_DBLCLK)
1201                 clock *= 2;
1202
1203         /* check if we can do 8bpc */
1204         status = hdmi_port_clock_valid(hdmi, clock, true);
1205
1206         /* if we can't do 8bpc we may still be able to do 12bpc */
1207         if (!HAS_GMCH_DISPLAY(dev) && status != MODE_OK)
1208                 status = hdmi_port_clock_valid(hdmi, clock * 3 / 2, true);
1209
1210         return status;
1211 }
1212
1213 static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state)
1214 {
1215         struct drm_device *dev = crtc_state->base.crtc->dev;
1216         struct drm_atomic_state *state;
1217         struct intel_encoder *encoder;
1218         struct drm_connector *connector;
1219         struct drm_connector_state *connector_state;
1220         int count = 0, count_hdmi = 0;
1221         int i;
1222
1223         if (HAS_GMCH_DISPLAY(dev))
1224                 return false;
1225
1226         state = crtc_state->base.state;
1227
1228         for_each_connector_in_state(state, connector, connector_state, i) {
1229                 if (connector_state->crtc != crtc_state->base.crtc)
1230                         continue;
1231
1232                 encoder = to_intel_encoder(connector_state->best_encoder);
1233
1234                 count_hdmi += encoder->type == INTEL_OUTPUT_HDMI;
1235                 count++;
1236         }
1237
1238         /*
1239          * HDMI 12bpc affects the clocks, so it's only possible
1240          * when not cloning with other encoder types.
1241          */
1242         return count_hdmi > 0 && count_hdmi == count;
1243 }
1244
1245 bool intel_hdmi_compute_config(struct intel_encoder *encoder,
1246                                struct intel_crtc_state *pipe_config)
1247 {
1248         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1249         struct drm_device *dev = encoder->base.dev;
1250         struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
1251         int clock_8bpc = pipe_config->base.adjusted_mode.crtc_clock;
1252         int clock_12bpc = clock_8bpc * 3 / 2;
1253         int desired_bpp;
1254
1255         pipe_config->has_hdmi_sink = intel_hdmi->has_hdmi_sink;
1256
1257         if (pipe_config->has_hdmi_sink)
1258                 pipe_config->has_infoframe = true;
1259
1260         if (intel_hdmi->color_range_auto) {
1261                 /* See CEA-861-E - 5.1 Default Encoding Parameters */
1262                 pipe_config->limited_color_range =
1263                         pipe_config->has_hdmi_sink &&
1264                         drm_match_cea_mode(adjusted_mode) > 1;
1265         } else {
1266                 pipe_config->limited_color_range =
1267                         intel_hdmi->limited_color_range;
1268         }
1269
1270         if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) {
1271                 pipe_config->pixel_multiplier = 2;
1272                 clock_8bpc *= 2;
1273                 clock_12bpc *= 2;
1274         }
1275
1276         if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev))
1277                 pipe_config->has_pch_encoder = true;
1278
1279         if (pipe_config->has_hdmi_sink && intel_hdmi->has_audio)
1280                 pipe_config->has_audio = true;
1281
1282         /*
1283          * HDMI is either 12 or 8, so if the display lets 10bpc sneak
1284          * through, clamp it down. Note that g4x/vlv don't support 12bpc hdmi
1285          * outputs. We also need to check that the higher clock still fits
1286          * within limits.
1287          */
1288         if (pipe_config->pipe_bpp > 8*3 && pipe_config->has_hdmi_sink &&
1289             hdmi_port_clock_valid(intel_hdmi, clock_12bpc, false) == MODE_OK &&
1290             hdmi_12bpc_possible(pipe_config)) {
1291                 DRM_DEBUG_KMS("picking bpc to 12 for HDMI output\n");
1292                 desired_bpp = 12*3;
1293
1294                 /* Need to adjust the port link by 1.5x for 12bpc. */
1295                 pipe_config->port_clock = clock_12bpc;
1296         } else {
1297                 DRM_DEBUG_KMS("picking bpc to 8 for HDMI output\n");
1298                 desired_bpp = 8*3;
1299
1300                 pipe_config->port_clock = clock_8bpc;
1301         }
1302
1303         if (!pipe_config->bw_constrained) {
1304                 DRM_DEBUG_KMS("forcing pipe bpc to %i for HDMI\n", desired_bpp);
1305                 pipe_config->pipe_bpp = desired_bpp;
1306         }
1307
1308         if (hdmi_port_clock_valid(intel_hdmi, pipe_config->port_clock,
1309                                   false) != MODE_OK) {
1310                 DRM_DEBUG_KMS("unsupported HDMI clock, rejecting mode\n");
1311                 return false;
1312         }
1313
1314         /* Set user selected PAR to incoming mode's member */
1315         adjusted_mode->picture_aspect_ratio = intel_hdmi->aspect_ratio;
1316
1317         return true;
1318 }
1319
1320 static void
1321 intel_hdmi_unset_edid(struct drm_connector *connector)
1322 {
1323         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1324
1325         intel_hdmi->has_hdmi_sink = false;
1326         intel_hdmi->has_audio = false;
1327         intel_hdmi->rgb_quant_range_selectable = false;
1328
1329         kfree(to_intel_connector(connector)->detect_edid);
1330         to_intel_connector(connector)->detect_edid = NULL;
1331 }
1332
1333 static bool
1334 intel_hdmi_set_edid(struct drm_connector *connector, bool force)
1335 {
1336         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1337         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1338         struct edid *edid = NULL;
1339         bool connected = false;
1340
1341         intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
1342
1343         if (force)
1344                 edid = drm_get_edid(connector,
1345                                     intel_gmbus_get_adapter(dev_priv,
1346                                     intel_hdmi->ddc_bus));
1347
1348         intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
1349
1350         to_intel_connector(connector)->detect_edid = edid;
1351         if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
1352                 intel_hdmi->rgb_quant_range_selectable =
1353                         drm_rgb_quant_range_selectable(edid);
1354
1355                 intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
1356                 if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
1357                         intel_hdmi->has_audio =
1358                                 intel_hdmi->force_audio == HDMI_AUDIO_ON;
1359
1360                 if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
1361                         intel_hdmi->has_hdmi_sink =
1362                                 drm_detect_hdmi_monitor(edid);
1363
1364                 connected = true;
1365         }
1366
1367         return connected;
1368 }
1369
1370 static enum drm_connector_status
1371 intel_hdmi_detect(struct drm_connector *connector, bool force)
1372 {
1373         enum drm_connector_status status;
1374         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1375         struct drm_i915_private *dev_priv = to_i915(connector->dev);
1376         bool live_status = false;
1377         unsigned int try;
1378
1379         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1380                       connector->base.id, connector->name);
1381
1382         intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
1383
1384         for (try = 0; !live_status && try < 9; try++) {
1385                 if (try)
1386                         msleep(10);
1387                 live_status = intel_digital_port_connected(dev_priv,
1388                                 hdmi_to_dig_port(intel_hdmi));
1389         }
1390
1391         if (!live_status) {
1392                 DRM_DEBUG_KMS("HDMI live status down\n");
1393                 /*
1394                  * Live status register is not reliable on all intel platforms.
1395                  * So consider live_status only for certain platforms, for
1396                  * others, read EDID to determine presence of sink.
1397                  */
1398                 if (INTEL_INFO(dev_priv)->gen < 7 || IS_IVYBRIDGE(dev_priv))
1399                         live_status = true;
1400         }
1401
1402         intel_hdmi_unset_edid(connector);
1403
1404         if (intel_hdmi_set_edid(connector, live_status)) {
1405                 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1406
1407                 hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
1408                 status = connector_status_connected;
1409         } else
1410                 status = connector_status_disconnected;
1411
1412         intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
1413
1414         return status;
1415 }
1416
1417 static void
1418 intel_hdmi_force(struct drm_connector *connector)
1419 {
1420         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1421
1422         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1423                       connector->base.id, connector->name);
1424
1425         intel_hdmi_unset_edid(connector);
1426
1427         if (connector->status != connector_status_connected)
1428                 return;
1429
1430         intel_hdmi_set_edid(connector, true);
1431         hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
1432 }
1433
1434 static int intel_hdmi_get_modes(struct drm_connector *connector)
1435 {
1436         struct edid *edid;
1437
1438         edid = to_intel_connector(connector)->detect_edid;
1439         if (edid == NULL)
1440                 return 0;
1441
1442         return intel_connector_update_modes(connector, edid);
1443 }
1444
1445 static bool
1446 intel_hdmi_detect_audio(struct drm_connector *connector)
1447 {
1448         bool has_audio = false;
1449         struct edid *edid;
1450
1451         edid = to_intel_connector(connector)->detect_edid;
1452         if (edid && edid->input & DRM_EDID_INPUT_DIGITAL)
1453                 has_audio = drm_detect_monitor_audio(edid);
1454
1455         return has_audio;
1456 }
1457
1458 static int
1459 intel_hdmi_set_property(struct drm_connector *connector,
1460                         struct drm_property *property,
1461                         uint64_t val)
1462 {
1463         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1464         struct intel_digital_port *intel_dig_port =
1465                 hdmi_to_dig_port(intel_hdmi);
1466         struct drm_i915_private *dev_priv = connector->dev->dev_private;
1467         int ret;
1468
1469         ret = drm_object_property_set_value(&connector->base, property, val);
1470         if (ret)
1471                 return ret;
1472
1473         if (property == dev_priv->force_audio_property) {
1474                 enum hdmi_force_audio i = val;
1475                 bool has_audio;
1476
1477                 if (i == intel_hdmi->force_audio)
1478                         return 0;
1479
1480                 intel_hdmi->force_audio = i;
1481
1482                 if (i == HDMI_AUDIO_AUTO)
1483                         has_audio = intel_hdmi_detect_audio(connector);
1484                 else
1485                         has_audio = (i == HDMI_AUDIO_ON);
1486
1487                 if (i == HDMI_AUDIO_OFF_DVI)
1488                         intel_hdmi->has_hdmi_sink = 0;
1489
1490                 intel_hdmi->has_audio = has_audio;
1491                 goto done;
1492         }
1493
1494         if (property == dev_priv->broadcast_rgb_property) {
1495                 bool old_auto = intel_hdmi->color_range_auto;
1496                 bool old_range = intel_hdmi->limited_color_range;
1497
1498                 switch (val) {
1499                 case INTEL_BROADCAST_RGB_AUTO:
1500                         intel_hdmi->color_range_auto = true;
1501                         break;
1502                 case INTEL_BROADCAST_RGB_FULL:
1503                         intel_hdmi->color_range_auto = false;
1504                         intel_hdmi->limited_color_range = false;
1505                         break;
1506                 case INTEL_BROADCAST_RGB_LIMITED:
1507                         intel_hdmi->color_range_auto = false;
1508                         intel_hdmi->limited_color_range = true;
1509                         break;
1510                 default:
1511                         return -EINVAL;
1512                 }
1513
1514                 if (old_auto == intel_hdmi->color_range_auto &&
1515                     old_range == intel_hdmi->limited_color_range)
1516                         return 0;
1517
1518                 goto done;
1519         }
1520
1521         if (property == connector->dev->mode_config.aspect_ratio_property) {
1522                 switch (val) {
1523                 case DRM_MODE_PICTURE_ASPECT_NONE:
1524                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
1525                         break;
1526                 case DRM_MODE_PICTURE_ASPECT_4_3:
1527                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_4_3;
1528                         break;
1529                 case DRM_MODE_PICTURE_ASPECT_16_9:
1530                         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_16_9;
1531                         break;
1532                 default:
1533                         return -EINVAL;
1534                 }
1535                 goto done;
1536         }
1537
1538         return -EINVAL;
1539
1540 done:
1541         if (intel_dig_port->base.base.crtc)
1542                 intel_crtc_restore_mode(intel_dig_port->base.base.crtc);
1543
1544         return 0;
1545 }
1546
1547 static void intel_hdmi_pre_enable(struct intel_encoder *encoder)
1548 {
1549         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1550         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
1551         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1552
1553         intel_hdmi_prepare(encoder);
1554
1555         intel_hdmi->set_infoframes(&encoder->base,
1556                                    intel_crtc->config->has_hdmi_sink,
1557                                    adjusted_mode);
1558 }
1559
1560 static void vlv_hdmi_pre_enable(struct intel_encoder *encoder)
1561 {
1562         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1563         struct intel_hdmi *intel_hdmi = &dport->hdmi;
1564         struct drm_device *dev = encoder->base.dev;
1565         struct drm_i915_private *dev_priv = dev->dev_private;
1566         struct intel_crtc *intel_crtc =
1567                 to_intel_crtc(encoder->base.crtc);
1568         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1569         enum dpio_channel port = vlv_dport_to_channel(dport);
1570         int pipe = intel_crtc->pipe;
1571         u32 val;
1572
1573         /* Enable clock channels for this port */
1574         mutex_lock(&dev_priv->sb_lock);
1575         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port));
1576         val = 0;
1577         if (pipe)
1578                 val |= (1<<21);
1579         else
1580                 val &= ~(1<<21);
1581         val |= 0x001000c4;
1582         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val);
1583
1584         /* HDMI 1.0V-2dB */
1585         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0);
1586         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), 0x2b245f5f);
1587         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), 0x5578b83a);
1588         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0c782040);
1589         vlv_dpio_write(dev_priv, pipe, VLV_TX3_DW4(port), 0x2b247878);
1590         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000);
1591         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), 0x00002000);
1592         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), DPIO_TX_OCALINIT_EN);
1593
1594         /* Program lane clock */
1595         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018);
1596         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888);
1597         mutex_unlock(&dev_priv->sb_lock);
1598
1599         intel_hdmi->set_infoframes(&encoder->base,
1600                                    intel_crtc->config->has_hdmi_sink,
1601                                    adjusted_mode);
1602
1603         g4x_enable_hdmi(encoder);
1604
1605         vlv_wait_port_ready(dev_priv, dport, 0x0);
1606 }
1607
1608 static void vlv_hdmi_pre_pll_enable(struct intel_encoder *encoder)
1609 {
1610         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1611         struct drm_device *dev = encoder->base.dev;
1612         struct drm_i915_private *dev_priv = dev->dev_private;
1613         struct intel_crtc *intel_crtc =
1614                 to_intel_crtc(encoder->base.crtc);
1615         enum dpio_channel port = vlv_dport_to_channel(dport);
1616         int pipe = intel_crtc->pipe;
1617
1618         intel_hdmi_prepare(encoder);
1619
1620         /* Program Tx lane resets to default */
1621         mutex_lock(&dev_priv->sb_lock);
1622         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port),
1623                          DPIO_PCS_TX_LANE2_RESET |
1624                          DPIO_PCS_TX_LANE1_RESET);
1625         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port),
1626                          DPIO_PCS_CLK_CRI_RXEB_EIOS_EN |
1627                          DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN |
1628                          (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) |
1629                          DPIO_PCS_CLK_SOFT_RESET);
1630
1631         /* Fix up inter-pair skew failure */
1632         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00);
1633         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500);
1634         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000);
1635
1636         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), 0x00002000);
1637         vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), DPIO_TX_OCALINIT_EN);
1638         mutex_unlock(&dev_priv->sb_lock);
1639 }
1640
1641 static void chv_data_lane_soft_reset(struct intel_encoder *encoder,
1642                                      bool reset)
1643 {
1644         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1645         enum dpio_channel ch = vlv_dport_to_channel(enc_to_dig_port(&encoder->base));
1646         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
1647         enum pipe pipe = crtc->pipe;
1648         uint32_t val;
1649
1650         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch));
1651         if (reset)
1652                 val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
1653         else
1654                 val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET;
1655         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val);
1656
1657         if (crtc->config->lane_count > 2) {
1658                 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch));
1659                 if (reset)
1660                         val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
1661                 else
1662                         val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET;
1663                 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val);
1664         }
1665
1666         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch));
1667         val |= CHV_PCS_REQ_SOFTRESET_EN;
1668         if (reset)
1669                 val &= ~DPIO_PCS_CLK_SOFT_RESET;
1670         else
1671                 val |= DPIO_PCS_CLK_SOFT_RESET;
1672         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val);
1673
1674         if (crtc->config->lane_count > 2) {
1675                 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch));
1676                 val |= CHV_PCS_REQ_SOFTRESET_EN;
1677                 if (reset)
1678                         val &= ~DPIO_PCS_CLK_SOFT_RESET;
1679                 else
1680                         val |= DPIO_PCS_CLK_SOFT_RESET;
1681                 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val);
1682         }
1683 }
1684
1685 static void chv_hdmi_pre_pll_enable(struct intel_encoder *encoder)
1686 {
1687         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1688         struct drm_device *dev = encoder->base.dev;
1689         struct drm_i915_private *dev_priv = dev->dev_private;
1690         struct intel_crtc *intel_crtc =
1691                 to_intel_crtc(encoder->base.crtc);
1692         enum dpio_channel ch = vlv_dport_to_channel(dport);
1693         enum pipe pipe = intel_crtc->pipe;
1694         u32 val;
1695
1696         intel_hdmi_prepare(encoder);
1697
1698         /*
1699          * Must trick the second common lane into life.
1700          * Otherwise we can't even access the PLL.
1701          */
1702         if (ch == DPIO_CH0 && pipe == PIPE_B)
1703                 dport->release_cl2_override =
1704                         !chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, true);
1705
1706         chv_phy_powergate_lanes(encoder, true, 0x0);
1707
1708         mutex_lock(&dev_priv->sb_lock);
1709
1710         /* Assert data lane reset */
1711         chv_data_lane_soft_reset(encoder, true);
1712
1713         /* program left/right clock distribution */
1714         if (pipe != PIPE_B) {
1715                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
1716                 val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
1717                 if (ch == DPIO_CH0)
1718                         val |= CHV_BUFLEFTENA1_FORCE;
1719                 if (ch == DPIO_CH1)
1720                         val |= CHV_BUFRIGHTENA1_FORCE;
1721                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
1722         } else {
1723                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
1724                 val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
1725                 if (ch == DPIO_CH0)
1726                         val |= CHV_BUFLEFTENA2_FORCE;
1727                 if (ch == DPIO_CH1)
1728                         val |= CHV_BUFRIGHTENA2_FORCE;
1729                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
1730         }
1731
1732         /* program clock channel usage */
1733         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch));
1734         val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;
1735         if (pipe != PIPE_B)
1736                 val &= ~CHV_PCS_USEDCLKCHANNEL;
1737         else
1738                 val |= CHV_PCS_USEDCLKCHANNEL;
1739         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val);
1740
1741         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch));
1742         val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;
1743         if (pipe != PIPE_B)
1744                 val &= ~CHV_PCS_USEDCLKCHANNEL;
1745         else
1746                 val |= CHV_PCS_USEDCLKCHANNEL;
1747         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val);
1748
1749         /*
1750          * This a a bit weird since generally CL
1751          * matches the pipe, but here we need to
1752          * pick the CL based on the port.
1753          */
1754         val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch));
1755         if (pipe != PIPE_B)
1756                 val &= ~CHV_CMN_USEDCLKCHANNEL;
1757         else
1758                 val |= CHV_CMN_USEDCLKCHANNEL;
1759         vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val);
1760
1761         mutex_unlock(&dev_priv->sb_lock);
1762 }
1763
1764 static void chv_hdmi_post_pll_disable(struct intel_encoder *encoder)
1765 {
1766         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1767         enum pipe pipe = to_intel_crtc(encoder->base.crtc)->pipe;
1768         u32 val;
1769
1770         mutex_lock(&dev_priv->sb_lock);
1771
1772         /* disable left/right clock distribution */
1773         if (pipe != PIPE_B) {
1774                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
1775                 val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
1776                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
1777         } else {
1778                 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
1779                 val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
1780                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
1781         }
1782
1783         mutex_unlock(&dev_priv->sb_lock);
1784
1785         /*
1786          * Leave the power down bit cleared for at least one
1787          * lane so that chv_powergate_phy_ch() will power
1788          * on something when the channel is otherwise unused.
1789          * When the port is off and the override is removed
1790          * the lanes power down anyway, so otherwise it doesn't
1791          * really matter what the state of power down bits is
1792          * after this.
1793          */
1794         chv_phy_powergate_lanes(encoder, false, 0x0);
1795 }
1796
1797 static void vlv_hdmi_post_disable(struct intel_encoder *encoder)
1798 {
1799         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1800         struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
1801         struct intel_crtc *intel_crtc =
1802                 to_intel_crtc(encoder->base.crtc);
1803         enum dpio_channel port = vlv_dport_to_channel(dport);
1804         int pipe = intel_crtc->pipe;
1805
1806         /* Reset lanes to avoid HDMI flicker (VLV w/a) */
1807         mutex_lock(&dev_priv->sb_lock);
1808         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), 0x00000000);
1809         vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), 0x00e00060);
1810         mutex_unlock(&dev_priv->sb_lock);
1811 }
1812
1813 static void chv_hdmi_post_disable(struct intel_encoder *encoder)
1814 {
1815         struct drm_device *dev = encoder->base.dev;
1816         struct drm_i915_private *dev_priv = dev->dev_private;
1817
1818         mutex_lock(&dev_priv->sb_lock);
1819
1820         /* Assert data lane reset */
1821         chv_data_lane_soft_reset(encoder, true);
1822
1823         mutex_unlock(&dev_priv->sb_lock);
1824 }
1825
1826 static void chv_hdmi_pre_enable(struct intel_encoder *encoder)
1827 {
1828         struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1829         struct intel_hdmi *intel_hdmi = &dport->hdmi;
1830         struct drm_device *dev = encoder->base.dev;
1831         struct drm_i915_private *dev_priv = dev->dev_private;
1832         struct intel_crtc *intel_crtc =
1833                 to_intel_crtc(encoder->base.crtc);
1834         const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
1835         enum dpio_channel ch = vlv_dport_to_channel(dport);
1836         int pipe = intel_crtc->pipe;
1837         int data, i, stagger;
1838         u32 val;
1839
1840         mutex_lock(&dev_priv->sb_lock);
1841
1842         /* allow hardware to manage TX FIFO reset source */
1843         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch));
1844         val &= ~DPIO_LANEDESKEW_STRAP_OVRD;
1845         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val);
1846
1847         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch));
1848         val &= ~DPIO_LANEDESKEW_STRAP_OVRD;
1849         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val);
1850
1851         /* Program Tx latency optimal setting */
1852         for (i = 0; i < 4; i++) {
1853                 /* Set the upar bit */
1854                 data = (i == 1) ? 0x0 : 0x1;
1855                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i),
1856                                 data << DPIO_UPAR_SHIFT);
1857         }
1858
1859         /* Data lane stagger programming */
1860         if (intel_crtc->config->port_clock > 270000)
1861                 stagger = 0x18;
1862         else if (intel_crtc->config->port_clock > 135000)
1863                 stagger = 0xd;
1864         else if (intel_crtc->config->port_clock > 67500)
1865                 stagger = 0x7;
1866         else if (intel_crtc->config->port_clock > 33750)
1867                 stagger = 0x4;
1868         else
1869                 stagger = 0x2;
1870
1871         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch));
1872         val |= DPIO_TX2_STAGGER_MASK(0x1f);
1873         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val);
1874
1875         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch));
1876         val |= DPIO_TX2_STAGGER_MASK(0x1f);
1877         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val);
1878
1879         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW12(ch),
1880                        DPIO_LANESTAGGER_STRAP(stagger) |
1881                        DPIO_LANESTAGGER_STRAP_OVRD |
1882                        DPIO_TX1_STAGGER_MASK(0x1f) |
1883                        DPIO_TX1_STAGGER_MULT(6) |
1884                        DPIO_TX2_STAGGER_MULT(0));
1885
1886         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW12(ch),
1887                        DPIO_LANESTAGGER_STRAP(stagger) |
1888                        DPIO_LANESTAGGER_STRAP_OVRD |
1889                        DPIO_TX1_STAGGER_MASK(0x1f) |
1890                        DPIO_TX1_STAGGER_MULT(7) |
1891                        DPIO_TX2_STAGGER_MULT(5));
1892
1893         /* Deassert data lane reset */
1894         chv_data_lane_soft_reset(encoder, false);
1895
1896         /* Clear calc init */
1897         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
1898         val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
1899         val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK);
1900         val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5;
1901         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
1902
1903         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
1904         val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
1905         val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK);
1906         val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5;
1907         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
1908
1909         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch));
1910         val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK);
1911         val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000;
1912         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val);
1913
1914         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch));
1915         val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK);
1916         val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000;
1917         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val);
1918
1919         /* FIXME: Program the support xxx V-dB */
1920         /* Use 800mV-0dB */
1921         for (i = 0; i < 4; i++) {
1922                 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i));
1923                 val &= ~DPIO_SWING_DEEMPH9P5_MASK;
1924                 val |= 128 << DPIO_SWING_DEEMPH9P5_SHIFT;
1925                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val);
1926         }
1927
1928         for (i = 0; i < 4; i++) {
1929                 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i));
1930
1931                 val &= ~DPIO_SWING_MARGIN000_MASK;
1932                 val |= 102 << DPIO_SWING_MARGIN000_SHIFT;
1933
1934                 /*
1935                  * Supposedly this value shouldn't matter when unique transition
1936                  * scale is disabled, but in fact it does matter. Let's just
1937                  * always program the same value and hope it's OK.
1938                  */
1939                 val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT);
1940                 val |= 0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT;
1941
1942                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val);
1943         }
1944
1945         /*
1946          * The document said it needs to set bit 27 for ch0 and bit 26
1947          * for ch1. Might be a typo in the doc.
1948          * For now, for this unique transition scale selection, set bit
1949          * 27 for ch0 and ch1.
1950          */
1951         for (i = 0; i < 4; i++) {
1952                 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i));
1953                 val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN;
1954                 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val);
1955         }
1956
1957         /* Start swing calculation */
1958         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
1959         val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
1960         vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
1961
1962         val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
1963         val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
1964         vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
1965
1966         mutex_unlock(&dev_priv->sb_lock);
1967
1968         intel_hdmi->set_infoframes(&encoder->base,
1969                                    intel_crtc->config->has_hdmi_sink,
1970                                    adjusted_mode);
1971
1972         g4x_enable_hdmi(encoder);
1973
1974         vlv_wait_port_ready(dev_priv, dport, 0x0);
1975
1976         /* Second common lane will stay alive on its own now */
1977         if (dport->release_cl2_override) {
1978                 chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, false);
1979                 dport->release_cl2_override = false;
1980         }
1981 }
1982
1983 static void intel_hdmi_destroy(struct drm_connector *connector)
1984 {
1985         kfree(to_intel_connector(connector)->detect_edid);
1986         drm_connector_cleanup(connector);
1987         kfree(connector);
1988 }
1989
1990 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
1991         .dpms = drm_atomic_helper_connector_dpms,
1992         .detect = intel_hdmi_detect,
1993         .force = intel_hdmi_force,
1994         .fill_modes = drm_helper_probe_single_connector_modes,
1995         .set_property = intel_hdmi_set_property,
1996         .atomic_get_property = intel_connector_atomic_get_property,
1997         .destroy = intel_hdmi_destroy,
1998         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1999         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
2000 };
2001
2002 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
2003         .get_modes = intel_hdmi_get_modes,
2004         .mode_valid = intel_hdmi_mode_valid,
2005         .best_encoder = intel_best_encoder,
2006 };
2007
2008 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
2009         .destroy = intel_encoder_destroy,
2010 };
2011
2012 static void
2013 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
2014 {
2015         intel_attach_force_audio_property(connector);
2016         intel_attach_broadcast_rgb_property(connector);
2017         intel_hdmi->color_range_auto = true;
2018         intel_attach_aspect_ratio_property(connector);
2019         intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
2020 }
2021
2022 void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
2023                                struct intel_connector *intel_connector)
2024 {
2025         struct drm_connector *connector = &intel_connector->base;
2026         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
2027         struct intel_encoder *intel_encoder = &intel_dig_port->base;
2028         struct drm_device *dev = intel_encoder->base.dev;
2029         struct drm_i915_private *dev_priv = dev->dev_private;
2030         enum port port = intel_dig_port->port;
2031         uint8_t alternate_ddc_pin;
2032
2033         DRM_DEBUG_KMS("Adding HDMI connector on port %c\n",
2034                       port_name(port));
2035
2036         drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
2037                            DRM_MODE_CONNECTOR_HDMIA);
2038         drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
2039
2040         connector->interlace_allowed = 1;
2041         connector->doublescan_allowed = 0;
2042         connector->stereo_allowed = 1;
2043
2044         switch (port) {
2045         case PORT_B:
2046                 if (IS_BROXTON(dev_priv))
2047                         intel_hdmi->ddc_bus = GMBUS_PIN_1_BXT;
2048                 else
2049                         intel_hdmi->ddc_bus = GMBUS_PIN_DPB;
2050                 /*
2051                  * On BXT A0/A1, sw needs to activate DDIA HPD logic and
2052                  * interrupts to check the external panel connection.
2053                  */
2054                 if (IS_BROXTON(dev_priv) && (INTEL_REVID(dev) < BXT_REVID_B0))
2055                         intel_encoder->hpd_pin = HPD_PORT_A;
2056                 else
2057                         intel_encoder->hpd_pin = HPD_PORT_B;
2058                 break;
2059         case PORT_C:
2060                 if (IS_BROXTON(dev_priv))
2061                         intel_hdmi->ddc_bus = GMBUS_PIN_2_BXT;
2062                 else
2063                         intel_hdmi->ddc_bus = GMBUS_PIN_DPC;
2064                 intel_encoder->hpd_pin = HPD_PORT_C;
2065                 break;
2066         case PORT_D:
2067                 if (WARN_ON(IS_BROXTON(dev_priv)))
2068                         intel_hdmi->ddc_bus = GMBUS_PIN_DISABLED;
2069                 else if (IS_CHERRYVIEW(dev_priv))
2070                         intel_hdmi->ddc_bus = GMBUS_PIN_DPD_CHV;
2071                 else
2072                         intel_hdmi->ddc_bus = GMBUS_PIN_DPD;
2073                 intel_encoder->hpd_pin = HPD_PORT_D;
2074                 break;
2075         case PORT_E:
2076                 /* On SKL PORT E doesn't have seperate GMBUS pin
2077                  *  We rely on VBT to set a proper alternate GMBUS pin. */
2078                 alternate_ddc_pin =
2079                         dev_priv->vbt.ddi_port_info[PORT_E].alternate_ddc_pin;
2080                 switch (alternate_ddc_pin) {
2081                 case DDC_PIN_B:
2082                         intel_hdmi->ddc_bus = GMBUS_PIN_DPB;
2083                         break;
2084                 case DDC_PIN_C:
2085                         intel_hdmi->ddc_bus = GMBUS_PIN_DPC;
2086                         break;
2087                 case DDC_PIN_D:
2088                         intel_hdmi->ddc_bus = GMBUS_PIN_DPD;
2089                         break;
2090                 default:
2091                         MISSING_CASE(alternate_ddc_pin);
2092                 }
2093                 intel_encoder->hpd_pin = HPD_PORT_E;
2094                 break;
2095         case PORT_A:
2096                 intel_encoder->hpd_pin = HPD_PORT_A;
2097                 /* Internal port only for eDP. */
2098         default:
2099                 BUG();
2100         }
2101
2102         if (IS_VALLEYVIEW(dev)) {
2103                 intel_hdmi->write_infoframe = vlv_write_infoframe;
2104                 intel_hdmi->set_infoframes = vlv_set_infoframes;
2105                 intel_hdmi->infoframe_enabled = vlv_infoframe_enabled;
2106         } else if (IS_G4X(dev)) {
2107                 intel_hdmi->write_infoframe = g4x_write_infoframe;
2108                 intel_hdmi->set_infoframes = g4x_set_infoframes;
2109                 intel_hdmi->infoframe_enabled = g4x_infoframe_enabled;
2110         } else if (HAS_DDI(dev)) {
2111                 intel_hdmi->write_infoframe = hsw_write_infoframe;
2112                 intel_hdmi->set_infoframes = hsw_set_infoframes;
2113                 intel_hdmi->infoframe_enabled = hsw_infoframe_enabled;
2114         } else if (HAS_PCH_IBX(dev)) {
2115                 intel_hdmi->write_infoframe = ibx_write_infoframe;
2116                 intel_hdmi->set_infoframes = ibx_set_infoframes;
2117                 intel_hdmi->infoframe_enabled = ibx_infoframe_enabled;
2118         } else {
2119                 intel_hdmi->write_infoframe = cpt_write_infoframe;
2120                 intel_hdmi->set_infoframes = cpt_set_infoframes;
2121                 intel_hdmi->infoframe_enabled = cpt_infoframe_enabled;
2122         }
2123
2124         if (HAS_DDI(dev))
2125                 intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
2126         else
2127                 intel_connector->get_hw_state = intel_connector_get_hw_state;
2128         intel_connector->unregister = intel_connector_unregister;
2129
2130         intel_hdmi_add_properties(intel_hdmi, connector);
2131
2132         intel_connector_attach_encoder(intel_connector, intel_encoder);
2133         drm_connector_register(connector);
2134         intel_hdmi->attached_connector = intel_connector;
2135
2136         /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
2137          * 0xd.  Failure to do so will result in spurious interrupts being
2138          * generated on the port when a cable is not attached.
2139          */
2140         if (IS_G4X(dev) && !IS_GM45(dev)) {
2141                 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
2142                 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
2143         }
2144 }
2145
2146 void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port)
2147 {
2148         struct intel_digital_port *intel_dig_port;
2149         struct intel_encoder *intel_encoder;
2150         struct intel_connector *intel_connector;
2151
2152         intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL);
2153         if (!intel_dig_port)
2154                 return;
2155
2156         intel_connector = intel_connector_alloc();
2157         if (!intel_connector) {
2158                 kfree(intel_dig_port);
2159                 return;
2160         }
2161
2162         intel_encoder = &intel_dig_port->base;
2163
2164         drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
2165                          DRM_MODE_ENCODER_TMDS);
2166
2167         intel_encoder->compute_config = intel_hdmi_compute_config;
2168         if (HAS_PCH_SPLIT(dev)) {
2169                 intel_encoder->disable = pch_disable_hdmi;
2170                 intel_encoder->post_disable = pch_post_disable_hdmi;
2171         } else {
2172                 intel_encoder->disable = g4x_disable_hdmi;
2173         }
2174         intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
2175         intel_encoder->get_config = intel_hdmi_get_config;
2176         if (IS_CHERRYVIEW(dev)) {
2177                 intel_encoder->pre_pll_enable = chv_hdmi_pre_pll_enable;
2178                 intel_encoder->pre_enable = chv_hdmi_pre_enable;
2179                 intel_encoder->enable = vlv_enable_hdmi;
2180                 intel_encoder->post_disable = chv_hdmi_post_disable;
2181                 intel_encoder->post_pll_disable = chv_hdmi_post_pll_disable;
2182         } else if (IS_VALLEYVIEW(dev)) {
2183                 intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
2184                 intel_encoder->pre_enable = vlv_hdmi_pre_enable;
2185                 intel_encoder->enable = vlv_enable_hdmi;
2186                 intel_encoder->post_disable = vlv_hdmi_post_disable;
2187         } else {
2188                 intel_encoder->pre_enable = intel_hdmi_pre_enable;
2189                 if (HAS_PCH_CPT(dev))
2190                         intel_encoder->enable = cpt_enable_hdmi;
2191                 else if (HAS_PCH_IBX(dev))
2192                         intel_encoder->enable = ibx_enable_hdmi;
2193                 else
2194                         intel_encoder->enable = g4x_enable_hdmi;
2195         }
2196
2197         intel_encoder->type = INTEL_OUTPUT_HDMI;
2198         if (IS_CHERRYVIEW(dev)) {
2199                 if (port == PORT_D)
2200                         intel_encoder->crtc_mask = 1 << 2;
2201                 else
2202                         intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
2203         } else {
2204                 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
2205         }
2206         intel_encoder->cloneable = 1 << INTEL_OUTPUT_ANALOG;
2207         /*
2208          * BSpec is unclear about HDMI+HDMI cloning on g4x, but it seems
2209          * to work on real hardware. And since g4x can send infoframes to
2210          * only one port anyway, nothing is lost by allowing it.
2211          */
2212         if (IS_G4X(dev))
2213                 intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
2214
2215         intel_dig_port->port = port;
2216         intel_dig_port->hdmi.hdmi_reg = hdmi_reg;
2217         intel_dig_port->dp.output_reg = 0;
2218
2219         intel_hdmi_init_connector(intel_dig_port, intel_connector);
2220 }