Pileus Git - ~andy/linux/blob - 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 "drmP.h"
  33 #include "drm.h"
  34 #include "drm_crtc.h"
  35 #include "drm_edid.h"
  36 #include "intel_drv.h"
  37 #include "i915_drm.h"
  38 #include "i915_drv.h"
  39
  40 static void
  41 assert_hdmi_port_disabled(struct intel_hdmi *intel_hdmi)
  42 {
  43         struct drm_device *dev = intel_hdmi->base.base.dev;
  44         struct drm_i915_private *dev_priv = dev->dev_private;
  45         uint32_t enabled_bits;
  46
  47         enabled_bits = IS_HASWELL(dev) ? DDI_BUF_CTL_ENABLE : SDVO_ENABLE;
  48
  49         WARN(I915_READ(intel_hdmi->sdvox_reg) & enabled_bits,
  50              "HDMI port enabled, expecting disabled\n");
  51 }
  52
  53 struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
  54 {
  55         return container_of(encoder, struct intel_hdmi, base.base);
  56 }
  57
  58 static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
  59 {
  60         return container_of(intel_attached_encoder(connector),
  61                             struct intel_hdmi, base);
  62 }
  63
  64 void intel_dip_infoframe_csum(struct dip_infoframe *frame)
  65 {
  66         uint8_t *data = (uint8_t *)frame;
  67         uint8_t sum = 0;
  68         unsigned i;
  69
  70         frame->checksum = 0;
  71         frame->ecc = 0;
  72
  73         for (i = 0; i < frame->len + DIP_HEADER_SIZE; i++)
  74                 sum += data[i];
  75
  76         frame->checksum = 0x100 - sum;
  77 }
  78
  79 static u32 g4x_infoframe_index(struct dip_infoframe *frame)
  80 {
  81         switch (frame->type) {
  82         case DIP_TYPE_AVI:
  83                 return VIDEO_DIP_SELECT_AVI;
  84         case DIP_TYPE_SPD:
  85                 return VIDEO_DIP_SELECT_SPD;
  86         default:
  87                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
  88                 return 0;
  89         }
  90 }
  91
  92 static u32 g4x_infoframe_enable(struct dip_infoframe *frame)
  93 {
  94         switch (frame->type) {
  95         case DIP_TYPE_AVI:
  96                 return VIDEO_DIP_ENABLE_AVI;
  97         case DIP_TYPE_SPD:
  98                 return VIDEO_DIP_ENABLE_SPD;
  99         default:
 100                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
 101                 return 0;
 102         }
 103 }
 104
 105 static u32 hsw_infoframe_enable(struct dip_infoframe *frame)
 106 {
 107         switch (frame->type) {
 108         case DIP_TYPE_AVI:
 109                 return VIDEO_DIP_ENABLE_AVI_HSW;
 110         case DIP_TYPE_SPD:
 111                 return VIDEO_DIP_ENABLE_SPD_HSW;
 112         default:
 113                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
 114                 return 0;
 115         }
 116 }
 117
 118 static u32 hsw_infoframe_data_reg(struct dip_infoframe *frame, enum pipe pipe)
 119 {
 120         switch (frame->type) {
 121         case DIP_TYPE_AVI:
 122                 return HSW_TVIDEO_DIP_AVI_DATA(pipe);
 123         case DIP_TYPE_SPD:
 124                 return HSW_TVIDEO_DIP_SPD_DATA(pipe);
 125         default:
 126                 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
 127                 return 0;
 128         }
 129 }
 130
 131 static void g4x_write_infoframe(struct drm_encoder *encoder,
 132                                 struct dip_infoframe *frame)
 133 {
 134         uint32_t *data = (uint32_t *)frame;
 135         struct drm_device *dev = encoder->dev;
 136         struct drm_i915_private *dev_priv = dev->dev_private;
 137         u32 val = I915_READ(VIDEO_DIP_CTL);
 138         unsigned i, len = DIP_HEADER_SIZE + frame->len;
 139
 140         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 141
 142         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 143         val |= g4x_infoframe_index(frame);
 144
 145         val &= ~g4x_infoframe_enable(frame);
 146
 147         I915_WRITE(VIDEO_DIP_CTL, val);
 148
 149         mmiowb();
 150         for (i = 0; i < len; i += 4) {
 151                 I915_WRITE(VIDEO_DIP_DATA, *data);
 152                 data++;
 153         }
 154         mmiowb();
 155
 156         val |= g4x_infoframe_enable(frame);
 157         val &= ~VIDEO_DIP_FREQ_MASK;
 158         val |= VIDEO_DIP_FREQ_VSYNC;
 159
 160         I915_WRITE(VIDEO_DIP_CTL, val);
 161         POSTING_READ(VIDEO_DIP_CTL);
 162 }
 163
 164 static void ibx_write_infoframe(struct drm_encoder *encoder,
 165                                 struct dip_infoframe *frame)
 166 {
 167         uint32_t *data = (uint32_t *)frame;
 168         struct drm_device *dev = encoder->dev;
 169         struct drm_i915_private *dev_priv = dev->dev_private;
 170         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 171         int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 172         unsigned i, len = DIP_HEADER_SIZE + frame->len;
 173         u32 val = I915_READ(reg);
 174
 175         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 176
 177         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 178         val |= g4x_infoframe_index(frame);
 179
 180         val &= ~g4x_infoframe_enable(frame);
 181
 182         I915_WRITE(reg, val);
 183
 184         mmiowb();
 185         for (i = 0; i < len; i += 4) {
 186                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 187                 data++;
 188         }
 189         mmiowb();
 190
 191         val |= g4x_infoframe_enable(frame);
 192         val &= ~VIDEO_DIP_FREQ_MASK;
 193         val |= VIDEO_DIP_FREQ_VSYNC;
 194
 195         I915_WRITE(reg, val);
 196         POSTING_READ(reg);
 197 }
 198
 199 static void cpt_write_infoframe(struct drm_encoder *encoder,
 200                                 struct dip_infoframe *frame)
 201 {
 202         uint32_t *data = (uint32_t *)frame;
 203         struct drm_device *dev = encoder->dev;
 204         struct drm_i915_private *dev_priv = dev->dev_private;
 205         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 206         int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 207         unsigned i, len = DIP_HEADER_SIZE + frame->len;
 208         u32 val = I915_READ(reg);
 209
 210         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 211
 212         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 213         val |= g4x_infoframe_index(frame);
 214
 215         /* The DIP control register spec says that we need to update the AVI
 216          * infoframe without clearing its enable bit */
 217         if (frame->type != DIP_TYPE_AVI)
 218                 val &= ~g4x_infoframe_enable(frame);
 219
 220         I915_WRITE(reg, val);
 221
 222         mmiowb();
 223         for (i = 0; i < len; i += 4) {
 224                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 225                 data++;
 226         }
 227         mmiowb();
 228
 229         val |= g4x_infoframe_enable(frame);
 230         val &= ~VIDEO_DIP_FREQ_MASK;
 231         val |= VIDEO_DIP_FREQ_VSYNC;
 232
 233         I915_WRITE(reg, val);
 234         POSTING_READ(reg);
 235 }
 236
 237 static void vlv_write_infoframe(struct drm_encoder *encoder,
 238                                      struct dip_infoframe *frame)
 239 {
 240         uint32_t *data = (uint32_t *)frame;
 241         struct drm_device *dev = encoder->dev;
 242         struct drm_i915_private *dev_priv = dev->dev_private;
 243         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 244         int reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
 245         unsigned i, len = DIP_HEADER_SIZE + frame->len;
 246         u32 val = I915_READ(reg);
 247
 248         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 249
 250         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
 251         val |= g4x_infoframe_index(frame);
 252
 253         val &= ~g4x_infoframe_enable(frame);
 254
 255         I915_WRITE(reg, val);
 256
 257         mmiowb();
 258         for (i = 0; i < len; i += 4) {
 259                 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
 260                 data++;
 261         }
 262         mmiowb();
 263
 264         val |= g4x_infoframe_enable(frame);
 265         val &= ~VIDEO_DIP_FREQ_MASK;
 266         val |= VIDEO_DIP_FREQ_VSYNC;
 267
 268         I915_WRITE(reg, val);
 269         POSTING_READ(reg);
 270 }
 271
 272 static void hsw_write_infoframe(struct drm_encoder *encoder,
 273                                 struct dip_infoframe *frame)
 274 {
 275         uint32_t *data = (uint32_t *)frame;
 276         struct drm_device *dev = encoder->dev;
 277         struct drm_i915_private *dev_priv = dev->dev_private;
 278         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 279         u32 ctl_reg = HSW_TVIDEO_DIP_CTL(intel_crtc->pipe);
 280         u32 data_reg = hsw_infoframe_data_reg(frame, intel_crtc->pipe);
 281         unsigned int i, len = DIP_HEADER_SIZE + frame->len;
 282         u32 val = I915_READ(ctl_reg);
 283
 284         if (data_reg == 0)
 285                 return;
 286
 287         val &= ~hsw_infoframe_enable(frame);
 288         I915_WRITE(ctl_reg, val);
 289
 290         mmiowb();
 291         for (i = 0; i < len; i += 4) {
 292                 I915_WRITE(data_reg + i, *data);
 293                 data++;
 294         }
 295         mmiowb();
 296
 297         val |= hsw_infoframe_enable(frame);
 298         I915_WRITE(ctl_reg, val);
 299         POSTING_READ(ctl_reg);
 300 }
 301
 302 static void intel_set_infoframe(struct drm_encoder *encoder,
 303                                 struct dip_infoframe *frame)
 304 {
 305         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 306
 307         intel_dip_infoframe_csum(frame);
 308         intel_hdmi->write_infoframe(encoder, frame);
 309 }
 310
 311 static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
 312                                          struct drm_display_mode *adjusted_mode)
 313 {
 314         struct dip_infoframe avi_if = {
 315                 .type = DIP_TYPE_AVI,
 316                 .ver = DIP_VERSION_AVI,
 317                 .len = DIP_LEN_AVI,
 318         };
 319
 320         if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
 321                 avi_if.body.avi.YQ_CN_PR |= DIP_AVI_PR_2;
 322
 323         intel_set_infoframe(encoder, &avi_if);
 324 }
 325
 326 static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
 327 {
 328         struct dip_infoframe spd_if;
 329
 330         memset(&spd_if, 0, sizeof(spd_if));
 331         spd_if.type = DIP_TYPE_SPD;
 332         spd_if.ver = DIP_VERSION_SPD;
 333         spd_if.len = DIP_LEN_SPD;
 334         strcpy(spd_if.body.spd.vn, "Intel");
 335         strcpy(spd_if.body.spd.pd, "Integrated gfx");
 336         spd_if.body.spd.sdi = DIP_SPD_PC;
 337
 338         intel_set_infoframe(encoder, &spd_if);
 339 }
 340
 341 static void g4x_set_infoframes(struct drm_encoder *encoder,
 342                                struct drm_display_mode *adjusted_mode)
 343 {
 344         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 345         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 346         u32 reg = VIDEO_DIP_CTL;
 347         u32 val = I915_READ(reg);
 348         u32 port;
 349
 350         assert_hdmi_port_disabled(intel_hdmi);
 351
 352         /* If the registers were not initialized yet, they might be zeroes,
 353          * which means we're selecting the AVI DIP and we're setting its
 354          * frequency to once. This seems to really confuse the HW and make
 355          * things stop working (the register spec says the AVI always needs to
 356          * be sent every VSync). So here we avoid writing to the register more
 357          * than we need and also explicitly select the AVI DIP and explicitly
 358          * set its frequency to every VSync. Avoiding to write it twice seems to
 359          * be enough to solve the problem, but being defensive shouldn't hurt us
 360          * either. */
 361         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 362
 363         if (!intel_hdmi->has_hdmi_sink) {
 364                 if (!(val & VIDEO_DIP_ENABLE))
 365                         return;
 366                 val &= ~VIDEO_DIP_ENABLE;
 367                 I915_WRITE(reg, val);
 368                 POSTING_READ(reg);
 369                 return;
 370         }
 371
 372         switch (intel_hdmi->sdvox_reg) {
 373         case SDVOB:
 374                 port = VIDEO_DIP_PORT_B;
 375                 break;
 376         case SDVOC:
 377                 port = VIDEO_DIP_PORT_C;
 378                 break;
 379         default:
 380                 return;
 381         }
 382
 383         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 384                 if (val & VIDEO_DIP_ENABLE) {
 385                         val &= ~VIDEO_DIP_ENABLE;
 386                         I915_WRITE(reg, val);
 387                         POSTING_READ(reg);
 388                 }
 389                 val &= ~VIDEO_DIP_PORT_MASK;
 390                 val |= port;
 391         }
 392
 393         val |= VIDEO_DIP_ENABLE;
 394         val &= ~VIDEO_DIP_ENABLE_VENDOR;
 395
 396         I915_WRITE(reg, val);
 397         POSTING_READ(reg);
 398
 399         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 400         intel_hdmi_set_spd_infoframe(encoder);
 401 }
 402
 403 static void ibx_set_infoframes(struct drm_encoder *encoder,
 404                                struct drm_display_mode *adjusted_mode)
 405 {
 406         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 407         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 408         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 409         u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 410         u32 val = I915_READ(reg);
 411         u32 port;
 412
 413         assert_hdmi_port_disabled(intel_hdmi);
 414
 415         /* See the big comment in g4x_set_infoframes() */
 416         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 417
 418         if (!intel_hdmi->has_hdmi_sink) {
 419                 if (!(val & VIDEO_DIP_ENABLE))
 420                         return;
 421                 val &= ~VIDEO_DIP_ENABLE;
 422                 I915_WRITE(reg, val);
 423                 POSTING_READ(reg);
 424                 return;
 425         }
 426
 427         switch (intel_hdmi->sdvox_reg) {
 428         case HDMIB:
 429                 port = VIDEO_DIP_PORT_B;
 430                 break;
 431         case HDMIC:
 432                 port = VIDEO_DIP_PORT_C;
 433                 break;
 434         case HDMID:
 435                 port = VIDEO_DIP_PORT_D;
 436                 break;
 437         default:
 438                 return;
 439         }
 440
 441         if (port != (val & VIDEO_DIP_PORT_MASK)) {
 442                 if (val & VIDEO_DIP_ENABLE) {
 443                         val &= ~VIDEO_DIP_ENABLE;
 444                         I915_WRITE(reg, val);
 445                         POSTING_READ(reg);
 446                 }
 447                 val &= ~VIDEO_DIP_PORT_MASK;
 448                 val |= port;
 449         }
 450
 451         val |= VIDEO_DIP_ENABLE;
 452         val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 453                  VIDEO_DIP_ENABLE_GCP);
 454
 455         I915_WRITE(reg, val);
 456         POSTING_READ(reg);
 457
 458         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 459         intel_hdmi_set_spd_infoframe(encoder);
 460 }
 461
 462 static void cpt_set_infoframes(struct drm_encoder *encoder,
 463                                struct drm_display_mode *adjusted_mode)
 464 {
 465         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 466         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 467         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 468         u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
 469         u32 val = I915_READ(reg);
 470
 471         assert_hdmi_port_disabled(intel_hdmi);
 472
 473         /* See the big comment in g4x_set_infoframes() */
 474         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 475
 476         if (!intel_hdmi->has_hdmi_sink) {
 477                 if (!(val & VIDEO_DIP_ENABLE))
 478                         return;
 479                 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI);
 480                 I915_WRITE(reg, val);
 481                 POSTING_READ(reg);
 482                 return;
 483         }
 484
 485         /* Set both together, unset both together: see the spec. */
 486         val |= VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI;
 487         val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 488                  VIDEO_DIP_ENABLE_GCP);
 489
 490         I915_WRITE(reg, val);
 491         POSTING_READ(reg);
 492
 493         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 494         intel_hdmi_set_spd_infoframe(encoder);
 495 }
 496
 497 static void vlv_set_infoframes(struct drm_encoder *encoder,
 498                                struct drm_display_mode *adjusted_mode)
 499 {
 500         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 501         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 502         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 503         u32 reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
 504         u32 val = I915_READ(reg);
 505
 506         assert_hdmi_port_disabled(intel_hdmi);
 507
 508         /* See the big comment in g4x_set_infoframes() */
 509         val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
 510
 511         if (!intel_hdmi->has_hdmi_sink) {
 512                 if (!(val & VIDEO_DIP_ENABLE))
 513                         return;
 514                 val &= ~VIDEO_DIP_ENABLE;
 515                 I915_WRITE(reg, val);
 516                 POSTING_READ(reg);
 517                 return;
 518         }
 519
 520         val |= VIDEO_DIP_ENABLE;
 521         val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
 522                  VIDEO_DIP_ENABLE_GCP);
 523
 524         I915_WRITE(reg, val);
 525         POSTING_READ(reg);
 526
 527         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 528         intel_hdmi_set_spd_infoframe(encoder);
 529 }
 530
 531 static void hsw_set_infoframes(struct drm_encoder *encoder,
 532                                struct drm_display_mode *adjusted_mode)
 533 {
 534         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 535         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 536         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 537         u32 reg = HSW_TVIDEO_DIP_CTL(intel_crtc->pipe);
 538         u32 val = I915_READ(reg);
 539
 540         assert_hdmi_port_disabled(intel_hdmi);
 541
 542         if (!intel_hdmi->has_hdmi_sink) {
 543                 I915_WRITE(reg, 0);
 544                 POSTING_READ(reg);
 545                 return;
 546         }
 547
 548         val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_GCP_HSW |
 549                  VIDEO_DIP_ENABLE_VS_HSW | VIDEO_DIP_ENABLE_GMP_HSW);
 550
 551         I915_WRITE(reg, val);
 552         POSTING_READ(reg);
 553
 554         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 555         intel_hdmi_set_spd_infoframe(encoder);
 556 }
 557
 558 static void intel_hdmi_mode_set(struct drm_encoder *encoder,
 559                                 struct drm_display_mode *mode,
 560                                 struct drm_display_mode *adjusted_mode)
 561 {
 562         struct drm_device *dev = encoder->dev;
 563         struct drm_i915_private *dev_priv = dev->dev_private;
 564         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
 565         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 566         u32 sdvox;
 567
 568         sdvox = SDVO_ENCODING_HDMI;
 569         if (!HAS_PCH_SPLIT(dev))
 570                 sdvox |= intel_hdmi->color_range;
 571         if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
 572                 sdvox |= SDVO_VSYNC_ACTIVE_HIGH;
 573         if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
 574                 sdvox |= SDVO_HSYNC_ACTIVE_HIGH;
 575
 576         if (intel_crtc->bpp > 24)
 577                 sdvox |= COLOR_FORMAT_12bpc;
 578         else
 579                 sdvox |= COLOR_FORMAT_8bpc;
 580
 581         /* Required on CPT */
 582         if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
 583                 sdvox |= HDMI_MODE_SELECT;
 584
 585         if (intel_hdmi->has_audio) {
 586                 DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
 587                                  pipe_name(intel_crtc->pipe));
 588                 sdvox |= SDVO_AUDIO_ENABLE;
 589                 sdvox |= SDVO_NULL_PACKETS_DURING_VSYNC;
 590                 intel_write_eld(encoder, adjusted_mode);
 591         }
 592
 593         if (HAS_PCH_CPT(dev))
 594                 sdvox |= PORT_TRANS_SEL_CPT(intel_crtc->pipe);
 595         else if (intel_crtc->pipe == PIPE_B)
 596                 sdvox |= SDVO_PIPE_B_SELECT;
 597
 598         I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
 599         POSTING_READ(intel_hdmi->sdvox_reg);
 600
 601         intel_hdmi->set_infoframes(encoder, adjusted_mode);
 602 }
 603
 604 static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
 605                                     enum pipe *pipe)
 606 {
 607         struct drm_device *dev = encoder->base.dev;
 608         struct drm_i915_private *dev_priv = dev->dev_private;
 609         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 610         u32 tmp;
 611
 612         tmp = I915_READ(intel_hdmi->sdvox_reg);
 613
 614         if (!(tmp & SDVO_ENABLE))
 615                 return false;
 616
 617         if (HAS_PCH_CPT(dev))
 618                 *pipe = PORT_TO_PIPE_CPT(tmp);
 619         else
 620                 *pipe = PORT_TO_PIPE(tmp);
 621
 622         return true;
 623 }
 624
 625 static void intel_enable_hdmi(struct intel_encoder *encoder)
 626 {
 627         struct drm_device *dev = encoder->base.dev;
 628         struct drm_i915_private *dev_priv = dev->dev_private;
 629         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 630         u32 temp;
 631         u32 enable_bits = SDVO_ENABLE;
 632
 633         if (intel_hdmi->has_audio)
 634                 enable_bits |= SDVO_AUDIO_ENABLE;
 635
 636         temp = I915_READ(intel_hdmi->sdvox_reg);
 637
 638         /* HW workaround for IBX, we need to move the port to transcoder A
 639          * before disabling it. */
 640         if (HAS_PCH_IBX(dev)) {
 641                 struct drm_crtc *crtc = encoder->base.crtc;
 642                 int pipe = crtc ? to_intel_crtc(crtc)->pipe : -1;
 643
 644                 /* Restore the transcoder select bit. */
 645                 if (pipe == PIPE_B)
 646                         enable_bits |= SDVO_PIPE_B_SELECT;
 647         }
 648
 649         /* HW workaround, need to toggle enable bit off and on for 12bpc, but
 650          * we do this anyway which shows more stable in testing.
 651          */
 652         if (HAS_PCH_SPLIT(dev)) {
 653                 I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
 654                 POSTING_READ(intel_hdmi->sdvox_reg);
 655         }
 656
 657         temp |= enable_bits;
 658
 659         I915_WRITE(intel_hdmi->sdvox_reg, temp);
 660         POSTING_READ(intel_hdmi->sdvox_reg);
 661
 662         /* HW workaround, need to write this twice for issue that may result
 663          * in first write getting masked.
 664          */
 665         if (HAS_PCH_SPLIT(dev)) {
 666                 I915_WRITE(intel_hdmi->sdvox_reg, temp);
 667                 POSTING_READ(intel_hdmi->sdvox_reg);
 668         }
 669 }
 670
 671 static void intel_disable_hdmi(struct intel_encoder *encoder)
 672 {
 673         struct drm_device *dev = encoder->base.dev;
 674         struct drm_i915_private *dev_priv = dev->dev_private;
 675         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 676         u32 temp;
 677         u32 enable_bits = SDVO_ENABLE;
 678
 679         if (intel_hdmi->has_audio)
 680                 enable_bits |= SDVO_AUDIO_ENABLE;
 681
 682         temp = I915_READ(intel_hdmi->sdvox_reg);
 683
 684         /* HW workaround for IBX, we need to move the port to transcoder A
 685          * before disabling it. */
 686         if (HAS_PCH_IBX(dev)) {
 687                 struct drm_crtc *crtc = encoder->base.crtc;
 688                 int pipe = crtc ? to_intel_crtc(crtc)->pipe : -1;
 689
 690                 if (temp & SDVO_PIPE_B_SELECT) {
 691                         temp &= ~SDVO_PIPE_B_SELECT;
 692                         I915_WRITE(intel_hdmi->sdvox_reg, temp);
 693                         POSTING_READ(intel_hdmi->sdvox_reg);
 694
 695                         /* Again we need to write this twice. */
 696                         I915_WRITE(intel_hdmi->sdvox_reg, temp);
 697                         POSTING_READ(intel_hdmi->sdvox_reg);
 698
 699                         /* Transcoder selection bits only update
 700                          * effectively on vblank. */
 701                         if (crtc)
 702                                 intel_wait_for_vblank(dev, pipe);
 703                         else
 704                                 msleep(50);
 705                 }
 706         }
 707
 708         /* HW workaround, need to toggle enable bit off and on for 12bpc, but
 709          * we do this anyway which shows more stable in testing.
 710          */
 711         if (HAS_PCH_SPLIT(dev)) {
 712                 I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
 713                 POSTING_READ(intel_hdmi->sdvox_reg);
 714         }
 715
 716         temp &= ~enable_bits;
 717
 718         I915_WRITE(intel_hdmi->sdvox_reg, temp);
 719         POSTING_READ(intel_hdmi->sdvox_reg);
 720
 721         /* HW workaround, need to write this twice for issue that may result
 722          * in first write getting masked.
 723          */
 724         if (HAS_PCH_SPLIT(dev)) {
 725                 I915_WRITE(intel_hdmi->sdvox_reg, temp);
 726                 POSTING_READ(intel_hdmi->sdvox_reg);
 727         }
 728 }
 729
 730 static int intel_hdmi_mode_valid(struct drm_connector *connector,
 731                                  struct drm_display_mode *mode)
 732 {
 733         if (mode->clock > 165000)
 734                 return MODE_CLOCK_HIGH;
 735         if (mode->clock < 20000)
 736                 return MODE_CLOCK_LOW;
 737
 738         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
 739                 return MODE_NO_DBLESCAN;
 740
 741         return MODE_OK;
 742 }
 743
 744 static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
 745                                   const struct drm_display_mode *mode,
 746                                   struct drm_display_mode *adjusted_mode)
 747 {
 748         return true;
 749 }
 750
 751 static bool g4x_hdmi_connected(struct intel_hdmi *intel_hdmi)
 752 {
 753         struct drm_device *dev = intel_hdmi->base.base.dev;
 754         struct drm_i915_private *dev_priv = dev->dev_private;
 755         uint32_t bit;
 756
 757         switch (intel_hdmi->sdvox_reg) {
 758         case SDVOB:
 759                 bit = HDMIB_HOTPLUG_LIVE_STATUS;
 760                 break;
 761         case SDVOC:
 762                 bit = HDMIC_HOTPLUG_LIVE_STATUS;
 763                 break;
 764         default:
 765                 bit = 0;
 766                 break;
 767         }
 768
 769         return I915_READ(PORT_HOTPLUG_STAT) & bit;
 770 }
 771
 772 static enum drm_connector_status
 773 intel_hdmi_detect(struct drm_connector *connector, bool force)
 774 {
 775         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
 776         struct drm_i915_private *dev_priv = connector->dev->dev_private;
 777         struct edid *edid;
 778         enum drm_connector_status status = connector_status_disconnected;
 779
 780         if (IS_G4X(connector->dev) && !g4x_hdmi_connected(intel_hdmi))
 781                 return status;
 782
 783         intel_hdmi->has_hdmi_sink = false;
 784         intel_hdmi->has_audio = false;
 785         edid = drm_get_edid(connector,
 786                             intel_gmbus_get_adapter(dev_priv,
 787                                                     intel_hdmi->ddc_bus));
 788
 789         if (edid) {
 790                 if (edid->input & DRM_EDID_INPUT_DIGITAL) {
 791                         status = connector_status_connected;
 792                         if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
 793                                 intel_hdmi->has_hdmi_sink =
 794                                                 drm_detect_hdmi_monitor(edid);
 795                         intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
 796                 }
 797                 kfree(edid);
 798         }
 799
 800         if (status == connector_status_connected) {
 801                 if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
 802                         intel_hdmi->has_audio =
 803                                 (intel_hdmi->force_audio == HDMI_AUDIO_ON);
 804         }
 805
 806         return status;
 807 }
 808
 809 static int intel_hdmi_get_modes(struct drm_connector *connector)
 810 {
 811         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
 812         struct drm_i915_private *dev_priv = connector->dev->dev_private;
 813
 814         /* We should parse the EDID data and find out if it's an HDMI sink so
 815          * we can send audio to it.
 816          */
 817
 818         return intel_ddc_get_modes(connector,
 819                                    intel_gmbus_get_adapter(dev_priv,
 820                                                            intel_hdmi->ddc_bus));
 821 }
 822
 823 static bool
 824 intel_hdmi_detect_audio(struct drm_connector *connector)
 825 {
 826         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
 827         struct drm_i915_private *dev_priv = connector->dev->dev_private;
 828         struct edid *edid;
 829         bool has_audio = false;
 830
 831         edid = drm_get_edid(connector,
 832                             intel_gmbus_get_adapter(dev_priv,
 833                                                     intel_hdmi->ddc_bus));
 834         if (edid) {
 835                 if (edid->input & DRM_EDID_INPUT_DIGITAL)
 836                         has_audio = drm_detect_monitor_audio(edid);
 837                 kfree(edid);
 838         }
 839
 840         return has_audio;
 841 }
 842
 843 static int
 844 intel_hdmi_set_property(struct drm_connector *connector,
 845                         struct drm_property *property,
 846                         uint64_t val)
 847 {
 848         struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
 849         struct drm_i915_private *dev_priv = connector->dev->dev_private;
 850         int ret;
 851
 852         ret = drm_connector_property_set_value(connector, property, val);
 853         if (ret)
 854                 return ret;
 855
 856         if (property == dev_priv->force_audio_property) {
 857                 enum hdmi_force_audio i = val;
 858                 bool has_audio;
 859
 860                 if (i == intel_hdmi->force_audio)
 861                         return 0;
 862
 863                 intel_hdmi->force_audio = i;
 864
 865                 if (i == HDMI_AUDIO_AUTO)
 866                         has_audio = intel_hdmi_detect_audio(connector);
 867                 else
 868                         has_audio = (i == HDMI_AUDIO_ON);
 869
 870                 if (i == HDMI_AUDIO_OFF_DVI)
 871                         intel_hdmi->has_hdmi_sink = 0;
 872
 873                 intel_hdmi->has_audio = has_audio;
 874                 goto done;
 875         }
 876
 877         if (property == dev_priv->broadcast_rgb_property) {
 878                 if (val == !!intel_hdmi->color_range)
 879                         return 0;
 880
 881                 intel_hdmi->color_range = val ? SDVO_COLOR_RANGE_16_235 : 0;
 882                 goto done;
 883         }
 884
 885         return -EINVAL;
 886
 887 done:
 888         if (intel_hdmi->base.base.crtc) {
 889                 struct drm_crtc *crtc = intel_hdmi->base.base.crtc;
 890                 intel_set_mode(crtc, &crtc->mode,
 891                                crtc->x, crtc->y, crtc->fb);
 892         }
 893
 894         return 0;
 895 }
 896
 897 static void intel_hdmi_destroy(struct drm_connector *connector)
 898 {
 899         drm_sysfs_connector_remove(connector);
 900         drm_connector_cleanup(connector);
 901         kfree(connector);
 902 }
 903
 904 static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs_hsw = {
 905         .mode_fixup = intel_hdmi_mode_fixup,
 906         .mode_set = intel_ddi_mode_set,
 907         .disable = intel_encoder_noop,
 908 };
 909
 910 static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = {
 911         .mode_fixup = intel_hdmi_mode_fixup,
 912         .mode_set = intel_hdmi_mode_set,
 913         .disable = intel_encoder_noop,
 914 };
 915
 916 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
 917         .dpms = intel_connector_dpms,
 918         .detect = intel_hdmi_detect,
 919         .fill_modes = drm_helper_probe_single_connector_modes,
 920         .set_property = intel_hdmi_set_property,
 921         .destroy = intel_hdmi_destroy,
 922 };
 923
 924 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
 925         .get_modes = intel_hdmi_get_modes,
 926         .mode_valid = intel_hdmi_mode_valid,
 927         .best_encoder = intel_best_encoder,
 928 };
 929
 930 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
 931         .destroy = intel_encoder_destroy,
 932 };
 933
 934 static void
 935 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
 936 {
 937         intel_attach_force_audio_property(connector);
 938         intel_attach_broadcast_rgb_property(connector);
 939 }
 940
 941 void intel_hdmi_init(struct drm_device *dev, int sdvox_reg, enum port port)
 942 {
 943         struct drm_i915_private *dev_priv = dev->dev_private;
 944         struct drm_connector *connector;
 945         struct intel_encoder *intel_encoder;
 946         struct intel_connector *intel_connector;
 947         struct intel_hdmi *intel_hdmi;
 948
 949         intel_hdmi = kzalloc(sizeof(struct intel_hdmi), GFP_KERNEL);
 950         if (!intel_hdmi)
 951                 return;
 952
 953         intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
 954         if (!intel_connector) {
 955                 kfree(intel_hdmi);
 956                 return;
 957         }
 958
 959         intel_encoder = &intel_hdmi->base;
 960         drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
 961                          DRM_MODE_ENCODER_TMDS);
 962
 963         connector = &intel_connector->base;
 964         drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
 965                            DRM_MODE_CONNECTOR_HDMIA);
 966         drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
 967
 968         intel_encoder->type = INTEL_OUTPUT_HDMI;
 969
 970         connector->polled = DRM_CONNECTOR_POLL_HPD;
 971         connector->interlace_allowed = 1;
 972         connector->doublescan_allowed = 0;
 973         intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
 974
 975         intel_encoder->cloneable = false;
 976
 977         intel_hdmi->ddi_port = port;
 978         switch (port) {
 979         case PORT_B:
 980                 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
 981                 dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
 982                 break;
 983         case PORT_C:
 984                 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
 985                 dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
 986                 break;
 987         case PORT_D:
 988                 intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
 989                 dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
 990                 break;
 991         case PORT_A:
 992                 /* Internal port only for eDP. */
 993         default:
 994                 BUG();
 995         }
 996
 997         intel_hdmi->sdvox_reg = sdvox_reg;
 998
 999         if (!HAS_PCH_SPLIT(dev)) {
1000                 intel_hdmi->write_infoframe = g4x_write_infoframe;
1001                 intel_hdmi->set_infoframes = g4x_set_infoframes;
1002         } else if (IS_VALLEYVIEW(dev)) {
1003                 intel_hdmi->write_infoframe = vlv_write_infoframe;
1004                 intel_hdmi->set_infoframes = vlv_set_infoframes;
1005         } else if (IS_HASWELL(dev)) {
1006                 intel_hdmi->write_infoframe = hsw_write_infoframe;
1007                 intel_hdmi->set_infoframes = hsw_set_infoframes;
1008         } else if (HAS_PCH_IBX(dev)) {
1009                 intel_hdmi->write_infoframe = ibx_write_infoframe;
1010                 intel_hdmi->set_infoframes = ibx_set_infoframes;
1011         } else {
1012                 intel_hdmi->write_infoframe = cpt_write_infoframe;
1013                 intel_hdmi->set_infoframes = cpt_set_infoframes;
1014         }
1015
1016         if (IS_HASWELL(dev)) {
1017                 intel_encoder->enable = intel_enable_ddi;
1018                 intel_encoder->disable = intel_disable_ddi;
1019                 intel_encoder->get_hw_state = intel_ddi_get_hw_state;
1020                 drm_encoder_helper_add(&intel_encoder->base,
1021                                        &intel_hdmi_helper_funcs_hsw);
1022         } else {
1023                 intel_encoder->enable = intel_enable_hdmi;
1024                 intel_encoder->disable = intel_disable_hdmi;
1025                 intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
1026                 drm_encoder_helper_add(&intel_encoder->base,
1027                                        &intel_hdmi_helper_funcs);
1028         }
1029         intel_connector->get_hw_state = intel_connector_get_hw_state;
1030
1031
1032         intel_hdmi_add_properties(intel_hdmi, connector);
1033
1034         intel_connector_attach_encoder(intel_connector, intel_encoder);
1035         drm_sysfs_connector_add(connector);
1036
1037         /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
1038          * 0xd.  Failure to do so will result in spurious interrupts being
1039          * generated on the port when a cable is not attached.
1040          */
1041         if (IS_G4X(dev) && !IS_GM45(dev)) {
1042                 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
1043                 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
1044         }
1045 }