drivers/gpu/drm/i915/intel_ddi.c

   1 /*
   2  * Copyright © 2012 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eugeni Dodonov <eugeni.dodonov@intel.com>
  25  *
  26  */
  27
  28 #include "i915_drv.h"
  29 #include "intel_drv.h"
  30
  31 /* HDMI/DVI modes ignore everything but the last 2 items. So we share
  32  * them for both DP and FDI transports, allowing those ports to
  33  * automatically adapt to HDMI connections as well
  34  */
  35 static const u32 hsw_ddi_translations_dp[] = {
  36         0x00FFFFFF, 0x0006000E,         /* DP parameters */
  37         0x00D75FFF, 0x0005000A,
  38         0x00C30FFF, 0x00040006,
  39         0x80AAAFFF, 0x000B0000,
  40         0x00FFFFFF, 0x0005000A,
  41         0x00D75FFF, 0x000C0004,
  42         0x80C30FFF, 0x000B0000,
  43         0x00FFFFFF, 0x00040006,
  44         0x80D75FFF, 0x000B0000,
  45         0x00FFFFFF, 0x00040006          /* HDMI parameters */
  46 };
  47
  48 static const u32 hsw_ddi_translations_fdi[] = {
  49         0x00FFFFFF, 0x0007000E,         /* FDI parameters */
  50         0x00D75FFF, 0x000F000A,
  51         0x00C30FFF, 0x00060006,
  52         0x00AAAFFF, 0x001E0000,
  53         0x00FFFFFF, 0x000F000A,
  54         0x00D75FFF, 0x00160004,
  55         0x00C30FFF, 0x001E0000,
  56         0x00FFFFFF, 0x00060006,
  57         0x00D75FFF, 0x001E0000,
  58         0x00FFFFFF, 0x00040006          /* HDMI parameters */
  59 };
  60
  61 /* On Haswell, DDI port buffers must be programmed with correct values
  62  * in advance. The buffer values are different for FDI and DP modes,
  63  * but the HDMI/DVI fields are shared among those. So we program the DDI
  64  * in either FDI or DP modes only, as HDMI connections will work with both
  65  * of those
  66  */
  67 void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port, bool use_fdi_mode)
  68 {
  69         struct drm_i915_private *dev_priv = dev->dev_private;
  70         u32 reg;
  71         int i;
  72         const u32 *ddi_translations = ((use_fdi_mode) ?
  73                 hsw_ddi_translations_fdi :
  74                 hsw_ddi_translations_dp);
  75
  76         DRM_DEBUG_DRIVER("Initializing DDI buffers for port %c in %s mode\n",
  77                         port_name(port),
  78                         use_fdi_mode ? "FDI" : "DP");
  79
  80         WARN((use_fdi_mode && (port != PORT_E)),
  81                 "Programming port %c in FDI mode, this probably will not work.\n",
  82                 port_name(port));
  83
  84         for (i=0, reg=DDI_BUF_TRANS(port); i < ARRAY_SIZE(hsw_ddi_translations_fdi); i++) {
  85                 I915_WRITE(reg, ddi_translations[i]);
  86                 reg += 4;
  87         }
  88 }
  89
  90 /* Program DDI buffers translations for DP. By default, program ports A-D in DP
  91  * mode and port E for FDI.
  92  */
  93 void intel_prepare_ddi(struct drm_device *dev)
  94 {
  95         int port;
  96
  97         if (IS_HASWELL(dev)) {
  98                 for (port = PORT_A; port < PORT_E; port++)
  99                         intel_prepare_ddi_buffers(dev, port, false);
 100
 101                 /* DDI E is the suggested one to work in FDI mode, so program is as such by
 102                  * default. It will have to be re-programmed in case a digital DP output
 103                  * will be detected on it
 104                  */
 105                 intel_prepare_ddi_buffers(dev, PORT_E, true);
 106         }
 107 }
 108
 109 static const long hsw_ddi_buf_ctl_values[] = {
 110         DDI_BUF_EMP_400MV_0DB_HSW,
 111         DDI_BUF_EMP_400MV_3_5DB_HSW,
 112         DDI_BUF_EMP_400MV_6DB_HSW,
 113         DDI_BUF_EMP_400MV_9_5DB_HSW,
 114         DDI_BUF_EMP_600MV_0DB_HSW,
 115         DDI_BUF_EMP_600MV_3_5DB_HSW,
 116         DDI_BUF_EMP_600MV_6DB_HSW,
 117         DDI_BUF_EMP_800MV_0DB_HSW,
 118         DDI_BUF_EMP_800MV_3_5DB_HSW
 119 };
 120
 121
 122 /* Starting with Haswell, different DDI ports can work in FDI mode for
 123  * connection to the PCH-located connectors. For this, it is necessary to train
 124  * both the DDI port and PCH receiver for the desired DDI buffer settings.
 125  *
 126  * The recommended port to work in FDI mode is DDI E, which we use here. Also,
 127  * please note that when FDI mode is active on DDI E, it shares 2 lines with
 128  * DDI A (which is used for eDP)
 129  */
 130
 131 void hsw_fdi_link_train(struct drm_crtc *crtc)
 132 {
 133         struct drm_device *dev = crtc->dev;
 134         struct drm_i915_private *dev_priv = dev->dev_private;
 135         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 136         int pipe = intel_crtc->pipe;
 137         u32 reg, temp, i;
 138
 139         /* Configure CPU PLL, wait for warmup */
 140         I915_WRITE(SPLL_CTL,
 141                         SPLL_PLL_ENABLE |
 142                         SPLL_PLL_FREQ_1350MHz |
 143                         SPLL_PLL_SCC);
 144
 145         /* Use SPLL to drive the output when in FDI mode */
 146         I915_WRITE(PORT_CLK_SEL(PORT_E),
 147                         PORT_CLK_SEL_SPLL);
 148         I915_WRITE(PIPE_CLK_SEL(pipe),
 149                         PIPE_CLK_SEL_PORT(PORT_E));
 150
 151         udelay(20);
 152
 153         /* Start the training iterating through available voltages and emphasis */
 154         for (i=0; i < ARRAY_SIZE(hsw_ddi_buf_ctl_values); i++) {
 155                 /* Configure DP_TP_CTL with auto-training */
 156                 I915_WRITE(DP_TP_CTL(PORT_E),
 157                                         DP_TP_CTL_FDI_AUTOTRAIN |
 158                                         DP_TP_CTL_ENHANCED_FRAME_ENABLE |
 159                                         DP_TP_CTL_LINK_TRAIN_PAT1 |
 160                                         DP_TP_CTL_ENABLE);
 161
 162                 /* Configure and enable DDI_BUF_CTL for DDI E with next voltage */
 163                 temp = I915_READ(DDI_BUF_CTL(PORT_E));
 164                 temp = (temp & ~DDI_BUF_EMP_MASK);
 165                 I915_WRITE(DDI_BUF_CTL(PORT_E),
 166                                 temp |
 167                                 DDI_BUF_CTL_ENABLE |
 168                                 DDI_PORT_WIDTH_X2 |
 169                                 hsw_ddi_buf_ctl_values[i]);
 170
 171                 udelay(600);
 172
 173                 /* Enable CPU FDI Receiver with auto-training */
 174                 reg = FDI_RX_CTL(pipe);
 175                 I915_WRITE(reg,
 176                                 I915_READ(reg) |
 177                                         FDI_LINK_TRAIN_AUTO |
 178                                         FDI_RX_ENABLE |
 179                                         FDI_LINK_TRAIN_PATTERN_1_CPT |
 180                                         FDI_RX_ENHANCE_FRAME_ENABLE |
 181                                         FDI_PORT_WIDTH_2X_LPT |
 182                                         FDI_RX_PLL_ENABLE);
 183                 POSTING_READ(reg);
 184                 udelay(100);
 185
 186                 temp = I915_READ(DP_TP_STATUS(PORT_E));
 187                 if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) {
 188                         DRM_DEBUG_DRIVER("BUF_CTL training done on %d step\n", i);
 189
 190                         /* Enable normal pixel sending for FDI */
 191                         I915_WRITE(DP_TP_CTL(PORT_E),
 192                                                 DP_TP_CTL_FDI_AUTOTRAIN |
 193                                                 DP_TP_CTL_LINK_TRAIN_NORMAL |
 194                                                 DP_TP_CTL_ENHANCED_FRAME_ENABLE |
 195                                                 DP_TP_CTL_ENABLE);
 196
 197                         /* Enable PIPE_DDI_FUNC_CTL for the pipe to work in FDI mode */
 198                         temp = I915_READ(DDI_FUNC_CTL(pipe));
 199                         temp &= ~PIPE_DDI_PORT_MASK;
 200                         temp |= PIPE_DDI_SELECT_PORT(PORT_E) |
 201                                         PIPE_DDI_MODE_SELECT_FDI |
 202                                         PIPE_DDI_FUNC_ENABLE |
 203                                         PIPE_DDI_PORT_WIDTH_X2;
 204                         I915_WRITE(DDI_FUNC_CTL(pipe),
 205                                         temp);
 206                         break;
 207                 } else {
 208                         DRM_ERROR("Error training BUF_CTL %d\n", i);
 209
 210                         /* Disable DP_TP_CTL and FDI_RX_CTL) and retry */
 211                         I915_WRITE(DP_TP_CTL(PORT_E),
 212                                         I915_READ(DP_TP_CTL(PORT_E)) &
 213                                                 ~DP_TP_CTL_ENABLE);
 214                         I915_WRITE(FDI_RX_CTL(pipe),
 215                                         I915_READ(FDI_RX_CTL(pipe)) &
 216                                                 ~FDI_RX_PLL_ENABLE);
 217                         continue;
 218                 }
 219         }
 220
 221         DRM_DEBUG_KMS("FDI train done.\n");
 222 }
 223
 224 /* For DDI connections, it is possible to support different outputs over the
 225  * same DDI port, such as HDMI or DP or even VGA via FDI. So we don't know by
 226  * the time the output is detected what exactly is on the other end of it. This
 227  * function aims at providing support for this detection and proper output
 228  * configuration.
 229  */
 230 void intel_ddi_init(struct drm_device *dev, enum port port)
 231 {
 232         /* For now, we don't do any proper output detection and assume that we
 233          * handle HDMI only */
 234
 235         switch(port){
 236         case PORT_A:
 237                 /* We don't handle eDP and DP yet */
 238                 DRM_DEBUG_DRIVER("Found digital output on DDI port A\n");
 239                 break;
 240         /* Assume that the  ports B, C and D are working in HDMI mode for now */
 241         case PORT_B:
 242         case PORT_C:
 243         case PORT_D:
 244                 intel_hdmi_init(dev, DDI_BUF_CTL(port));
 245                 break;
 246         default:
 247                 DRM_DEBUG_DRIVER("No handlers defined for port %d, skipping DDI initialization\n",
 248                                 port);
 249                 break;
 250         }
 251 }
 252
 253 /* WRPLL clock dividers */
 254 struct wrpll_tmds_clock {
 255         u32 clock;
 256         u16 p;          /* Post divider */
 257         u16 n2;         /* Feedback divider */
 258         u16 r2;         /* Reference divider */
 259 };
 260
 261 /* Table of matching values for WRPLL clocks programming for each frequency */
 262 static const struct wrpll_tmds_clock wrpll_tmds_clock_table[] = {
 263         {19750, 38,     25,     18},
 264         {20000, 48,     32,     18},
 265         {21000, 36,     21,     15},
 266         {21912, 42,     29,     17},
 267         {22000, 36,     22,     15},
 268         {23000, 36,     23,     15},
 269         {23500, 40,     40,     23},
 270         {23750, 26,     16,     14},
 271         {23750, 26,     16,     14},
 272         {24000, 36,     24,     15},
 273         {25000, 36,     25,     15},
 274         {25175, 26,     40,     33},
 275         {25200, 30,     21,     15},
 276         {26000, 36,     26,     15},
 277         {27000, 30,     21,     14},
 278         {27027, 18,     100,    111},
 279         {27500, 30,     29,     19},
 280         {28000, 34,     30,     17},
 281         {28320, 26,     30,     22},
 282         {28322, 32,     42,     25},
 283         {28750, 24,     23,     18},
 284         {29000, 30,     29,     18},
 285         {29750, 32,     30,     17},
 286         {30000, 30,     25,     15},
 287         {30750, 30,     41,     24},
 288         {31000, 30,     31,     18},
 289         {31500, 30,     28,     16},
 290         {32000, 30,     32,     18},
 291         {32500, 28,     32,     19},
 292         {33000, 24,     22,     15},
 293         {34000, 28,     30,     17},
 294         {35000, 26,     32,     19},
 295         {35500, 24,     30,     19},
 296         {36000, 26,     26,     15},
 297         {36750, 26,     46,     26},
 298         {37000, 24,     23,     14},
 299         {37762, 22,     40,     26},
 300         {37800, 20,     21,     15},
 301         {38000, 24,     27,     16},
 302         {38250, 24,     34,     20},
 303         {39000, 24,     26,     15},
 304         {40000, 24,     32,     18},
 305         {40500, 20,     21,     14},
 306         {40541, 22,     147,    89},
 307         {40750, 18,     19,     14},
 308         {41000, 16,     17,     14},
 309         {41500, 22,     44,     26},
 310         {41540, 22,     44,     26},
 311         {42000, 18,     21,     15},
 312         {42500, 22,     45,     26},
 313         {43000, 20,     43,     27},
 314         {43163, 20,     24,     15},
 315         {44000, 18,     22,     15},
 316         {44900, 20,     108,    65},
 317         {45000, 20,     25,     15},
 318         {45250, 20,     52,     31},
 319         {46000, 18,     23,     15},
 320         {46750, 20,     45,     26},
 321         {47000, 20,     40,     23},
 322         {48000, 18,     24,     15},
 323         {49000, 18,     49,     30},
 324         {49500, 16,     22,     15},
 325         {50000, 18,     25,     15},
 326         {50500, 18,     32,     19},
 327         {51000, 18,     34,     20},
 328         {52000, 18,     26,     15},
 329         {52406, 14,     34,     25},
 330         {53000, 16,     22,     14},
 331         {54000, 16,     24,     15},
 332         {54054, 16,     173,    108},
 333         {54500, 14,     24,     17},
 334         {55000, 12,     22,     18},
 335         {56000, 14,     45,     31},
 336         {56250, 16,     25,     15},
 337         {56750, 14,     25,     17},
 338         {57000, 16,     27,     16},
 339         {58000, 16,     43,     25},
 340         {58250, 16,     38,     22},
 341         {58750, 16,     40,     23},
 342         {59000, 14,     26,     17},
 343         {59341, 14,     40,     26},
 344         {59400, 16,     44,     25},
 345         {60000, 16,     32,     18},
 346         {60500, 12,     39,     29},
 347         {61000, 14,     49,     31},
 348         {62000, 14,     37,     23},
 349         {62250, 14,     42,     26},
 350         {63000, 12,     21,     15},
 351         {63500, 14,     28,     17},
 352         {64000, 12,     27,     19},
 353         {65000, 14,     32,     19},
 354         {65250, 12,     29,     20},
 355         {65500, 12,     32,     22},
 356         {66000, 12,     22,     15},
 357         {66667, 14,     38,     22},
 358         {66750, 10,     21,     17},
 359         {67000, 14,     33,     19},
 360         {67750, 14,     58,     33},
 361         {68000, 14,     30,     17},
 362         {68179, 14,     46,     26},
 363         {68250, 14,     46,     26},
 364         {69000, 12,     23,     15},
 365         {70000, 12,     28,     18},
 366         {71000, 12,     30,     19},
 367         {72000, 12,     24,     15},
 368         {73000, 10,     23,     17},
 369         {74000, 12,     23,     14},
 370         {74176, 8,      100,    91},
 371         {74250, 10,     22,     16},
 372         {74481, 12,     43,     26},
 373         {74500, 10,     29,     21},
 374         {75000, 12,     25,     15},
 375         {75250, 10,     39,     28},
 376         {76000, 12,     27,     16},
 377         {77000, 12,     53,     31},
 378         {78000, 12,     26,     15},
 379         {78750, 12,     28,     16},
 380         {79000, 10,     38,     26},
 381         {79500, 10,     28,     19},
 382         {80000, 12,     32,     18},
 383         {81000, 10,     21,     14},
 384         {81081, 6,      100,    111},
 385         {81624, 8,      29,     24},
 386         {82000, 8,      17,     14},
 387         {83000, 10,     40,     26},
 388         {83950, 10,     28,     18},
 389         {84000, 10,     28,     18},
 390         {84750, 6,      16,     17},
 391         {85000, 6,      17,     18},
 392         {85250, 10,     30,     19},
 393         {85750, 10,     27,     17},
 394         {86000, 10,     43,     27},
 395         {87000, 10,     29,     18},
 396         {88000, 10,     44,     27},
 397         {88500, 10,     41,     25},
 398         {89000, 10,     28,     17},
 399         {89012, 6,      90,     91},
 400         {89100, 10,     33,     20},
 401         {90000, 10,     25,     15},
 402         {91000, 10,     32,     19},
 403         {92000, 10,     46,     27},
 404         {93000, 10,     31,     18},
 405         {94000, 10,     40,     23},
 406         {94500, 10,     28,     16},
 407         {95000, 10,     44,     25},
 408         {95654, 10,     39,     22},
 409         {95750, 10,     39,     22},
 410         {96000, 10,     32,     18},
 411         {97000, 8,      23,     16},
 412         {97750, 8,      42,     29},
 413         {98000, 8,      45,     31},
 414         {99000, 8,      22,     15},
 415         {99750, 8,      34,     23},
 416         {100000,        6,      20,     18},
 417         {100500,        6,      19,     17},
 418         {101000,        6,      37,     33},
 419         {101250,        8,      21,     14},
 420         {102000,        6,      17,     15},
 421         {102250,        6,      25,     22},
 422         {103000,        8,      29,     19},
 423         {104000,        8,      37,     24},
 424         {105000,        8,      28,     18},
 425         {106000,        8,      22,     14},
 426         {107000,        8,      46,     29},
 427         {107214,        8,      27,     17},
 428         {108000,        8,      24,     15},
 429         {108108,        8,      173,    108},
 430         {109000,        6,      23,     19},
 431         {109000,        6,      23,     19},
 432         {110000,        6,      22,     18},
 433         {110013,        6,      22,     18},
 434         {110250,        8,      49,     30},
 435         {110500,        8,      36,     22},
 436         {111000,        8,      23,     14},
 437         {111264,        8,      150,    91},
 438         {111375,        8,      33,     20},
 439         {112000,        8,      63,     38},
 440         {112500,        8,      25,     15},
 441         {113100,        8,      57,     34},
 442         {113309,        8,      42,     25},
 443         {114000,        8,      27,     16},
 444         {115000,        6,      23,     18},
 445         {116000,        8,      43,     25},
 446         {117000,        8,      26,     15},
 447         {117500,        8,      40,     23},
 448         {118000,        6,      38,     29},
 449         {119000,        8,      30,     17},
 450         {119500,        8,      46,     26},
 451         {119651,        8,      39,     22},
 452         {120000,        8,      32,     18},
 453         {121000,        6,      39,     29},
 454         {121250,        6,      31,     23},
 455         {121750,        6,      23,     17},
 456         {122000,        6,      42,     31},
 457         {122614,        6,      30,     22},
 458         {123000,        6,      41,     30},
 459         {123379,        6,      37,     27},
 460         {124000,        6,      51,     37},
 461         {125000,        6,      25,     18},
 462         {125250,        4,      13,     14},
 463         {125750,        4,      27,     29},
 464         {126000,        6,      21,     15},
 465         {127000,        6,      24,     17},
 466         {127250,        6,      41,     29},
 467         {128000,        6,      27,     19},
 468         {129000,        6,      43,     30},
 469         {129859,        4,      25,     26},
 470         {130000,        6,      26,     18},
 471         {130250,        6,      42,     29},
 472         {131000,        6,      32,     22},
 473         {131500,        6,      38,     26},
 474         {131850,        6,      41,     28},
 475         {132000,        6,      22,     15},
 476         {132750,        6,      28,     19},
 477         {133000,        6,      34,     23},
 478         {133330,        6,      37,     25},
 479         {134000,        6,      61,     41},
 480         {135000,        6,      21,     14},
 481         {135250,        6,      167,    111},
 482         {136000,        6,      62,     41},
 483         {137000,        6,      35,     23},
 484         {138000,        6,      23,     15},
 485         {138500,        6,      40,     26},
 486         {138750,        6,      37,     24},
 487         {139000,        6,      34,     22},
 488         {139050,        6,      34,     22},
 489         {139054,        6,      34,     22},
 490         {140000,        6,      28,     18},
 491         {141000,        6,      36,     23},
 492         {141500,        6,      22,     14},
 493         {142000,        6,      30,     19},
 494         {143000,        6,      27,     17},
 495         {143472,        4,      17,     16},
 496         {144000,        6,      24,     15},
 497         {145000,        6,      29,     18},
 498         {146000,        6,      47,     29},
 499         {146250,        6,      26,     16},
 500         {147000,        6,      49,     30},
 501         {147891,        6,      23,     14},
 502         {148000,        6,      23,     14},
 503         {148250,        6,      28,     17},
 504         {148352,        4,      100,    91},
 505         {148500,        6,      33,     20},
 506         {149000,        6,      48,     29},
 507         {150000,        6,      25,     15},
 508         {151000,        4,      19,     17},
 509         {152000,        6,      27,     16},
 510         {152280,        6,      44,     26},
 511         {153000,        6,      34,     20},
 512         {154000,        6,      53,     31},
 513         {155000,        6,      31,     18},
 514         {155250,        6,      50,     29},
 515         {155750,        6,      45,     26},
 516         {156000,        6,      26,     15},
 517         {157000,        6,      61,     35},
 518         {157500,        6,      28,     16},
 519         {158000,        6,      65,     37},
 520         {158250,        6,      44,     25},
 521         {159000,        6,      53,     30},
 522         {159500,        6,      39,     22},
 523         {160000,        6,      32,     18},
 524         {161000,        4,      31,     26},
 525         {162000,        4,      18,     15},
 526         {162162,        4,      131,    109},
 527         {162500,        4,      53,     44},
 528         {163000,        4,      29,     24},
 529         {164000,        4,      17,     14},
 530         {165000,        4,      22,     18},
 531         {166000,        4,      32,     26},
 532         {167000,        4,      26,     21},
 533         {168000,        4,      46,     37},
 534         {169000,        4,      104,    83},
 535         {169128,        4,      64,     51},
 536         {169500,        4,      39,     31},
 537         {170000,        4,      34,     27},
 538         {171000,        4,      19,     15},
 539         {172000,        4,      51,     40},
 540         {172750,        4,      32,     25},
 541         {172800,        4,      32,     25},
 542         {173000,        4,      41,     32},
 543         {174000,        4,      49,     38},
 544         {174787,        4,      22,     17},
 545         {175000,        4,      35,     27},
 546         {176000,        4,      30,     23},
 547         {177000,        4,      38,     29},
 548         {178000,        4,      29,     22},
 549         {178500,        4,      37,     28},
 550         {179000,        4,      53,     40},
 551         {179500,        4,      73,     55},
 552         {180000,        4,      20,     15},
 553         {181000,        4,      55,     41},
 554         {182000,        4,      31,     23},
 555         {183000,        4,      42,     31},
 556         {184000,        4,      30,     22},
 557         {184750,        4,      26,     19},
 558         {185000,        4,      37,     27},
 559         {186000,        4,      51,     37},
 560         {187000,        4,      36,     26},
 561         {188000,        4,      32,     23},
 562         {189000,        4,      21,     15},
 563         {190000,        4,      38,     27},
 564         {190960,        4,      41,     29},
 565         {191000,        4,      41,     29},
 566         {192000,        4,      27,     19},
 567         {192250,        4,      37,     26},
 568         {193000,        4,      20,     14},
 569         {193250,        4,      53,     37},
 570         {194000,        4,      23,     16},
 571         {194208,        4,      23,     16},
 572         {195000,        4,      26,     18},
 573         {196000,        4,      45,     31},
 574         {197000,        4,      35,     24},
 575         {197750,        4,      41,     28},
 576         {198000,        4,      22,     15},
 577         {198500,        4,      25,     17},
 578         {199000,        4,      28,     19},
 579         {200000,        4,      37,     25},
 580         {201000,        4,      61,     41},
 581         {202000,        4,      112,    75},
 582         {202500,        4,      21,     14},
 583         {203000,        4,      146,    97},
 584         {204000,        4,      62,     41},
 585         {204750,        4,      44,     29},
 586         {205000,        4,      38,     25},
 587         {206000,        4,      29,     19},
 588         {207000,        4,      23,     15},
 589         {207500,        4,      40,     26},
 590         {208000,        4,      37,     24},
 591         {208900,        4,      48,     31},
 592         {209000,        4,      48,     31},
 593         {209250,        4,      31,     20},
 594         {210000,        4,      28,     18},
 595         {211000,        4,      25,     16},
 596         {212000,        4,      22,     14},
 597         {213000,        4,      30,     19},
 598         {213750,        4,      38,     24},
 599         {214000,        4,      46,     29},
 600         {214750,        4,      35,     22},
 601         {215000,        4,      43,     27},
 602         {216000,        4,      24,     15},
 603         {217000,        4,      37,     23},
 604         {218000,        4,      42,     26},
 605         {218250,        4,      42,     26},
 606         {218750,        4,      34,     21},
 607         {219000,        4,      47,     29},
 608         {219000,        4,      47,     29},
 609         {220000,        4,      44,     27},
 610         {220640,        4,      49,     30},
 611         {220750,        4,      36,     22},
 612         {221000,        4,      36,     22},
 613         {222000,        4,      23,     14},
 614         {222525,        4,      28,     17},
 615         {222750,        4,      33,     20},
 616         {227000,        4,      37,     22},
 617         {230250,        4,      29,     17},
 618         {233500,        4,      38,     22},
 619         {235000,        4,      40,     23},
 620         {238000,        4,      30,     17},
 621         {241500,        2,      17,     19},
 622         {245250,        2,      20,     22},
 623         {247750,        2,      22,     24},
 624         {253250,        2,      15,     16},
 625         {256250,        2,      18,     19},
 626         {262500,        2,      31,     32},
 627         {267250,        2,      66,     67},
 628         {268500,        2,      94,     95},
 629         {270000,        2,      14,     14},
 630         {272500,        2,      77,     76},
 631         {273750,        2,      57,     56},
 632         {280750,        2,      24,     23},
 633         {281250,        2,      23,     22},
 634         {286000,        2,      17,     16},
 635         {291750,        2,      26,     24},
 636         {296703,        2,      56,     51},
 637         {297000,        2,      22,     20},
 638         {298000,        2,      21,     19},
 639 };
 640
 641 void intel_ddi_mode_set(struct drm_encoder *encoder,
 642                                 struct drm_display_mode *mode,
 643                                 struct drm_display_mode *adjusted_mode)
 644 {
 645         struct drm_device *dev = encoder->dev;
 646         struct drm_i915_private *dev_priv = dev->dev_private;
 647         struct drm_crtc *crtc = encoder->crtc;
 648         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 649         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 650         int port = intel_hdmi->ddi_port;
 651         int pipe = intel_crtc->pipe;
 652         int p, n2, r2, valid=0;
 653         u32 temp, i;
 654
 655         /* On Haswell, we need to enable the clocks and prepare DDI function to
 656          * work in HDMI mode for this pipe.
 657          */
 658         DRM_DEBUG_KMS("Preparing HDMI DDI mode for Haswell on port %c, pipe %c\n", port_name(port), pipe_name(pipe));
 659
 660         for (i=0; i < ARRAY_SIZE(wrpll_tmds_clock_table); i++) {
 661                 if (crtc->mode.clock == wrpll_tmds_clock_table[i].clock) {
 662                         p = wrpll_tmds_clock_table[i].p;
 663                         n2 = wrpll_tmds_clock_table[i].n2;
 664                         r2 = wrpll_tmds_clock_table[i].r2;
 665
 666                         DRM_DEBUG_KMS("WR PLL clock: found settings for %dKHz refresh rate: p=%d, n2=%d, r2=%d\n",
 667                                         crtc->mode.clock,
 668                                         p, n2, r2);
 669
 670                         valid = 1;
 671                         break;
 672                 }
 673         }
 674
 675         if (!valid) {
 676                 DRM_ERROR("Unable to find WR PLL clock settings for %dKHz refresh rate\n",
 677                                 crtc->mode.clock);
 678                 return;
 679         }
 680
 681         /* Enable LCPLL if disabled */
 682         temp = I915_READ(LCPLL_CTL);
 683         if (temp & LCPLL_PLL_DISABLE)
 684                 I915_WRITE(LCPLL_CTL,
 685                                 temp & ~LCPLL_PLL_DISABLE);
 686
 687         /* Configure WR PLL 1, program the correct divider values for
 688          * the desired frequency and wait for warmup */
 689         I915_WRITE(WRPLL_CTL1,
 690                         WRPLL_PLL_ENABLE |
 691                         WRPLL_PLL_SELECT_LCPLL_2700 |
 692                         WRPLL_DIVIDER_REFERENCE(r2) |
 693                         WRPLL_DIVIDER_FEEDBACK(n2) |
 694                         WRPLL_DIVIDER_POST(p));
 695
 696         udelay(20);
 697
 698         /* Use WRPLL1 clock to drive the output to the port, and tell the pipe to use
 699          * this port for connection.
 700          */
 701         I915_WRITE(PORT_CLK_SEL(port),
 702                         PORT_CLK_SEL_WRPLL1);
 703         I915_WRITE(PIPE_CLK_SEL(pipe),
 704                         PIPE_CLK_SEL_PORT(port));
 705
 706         udelay(20);
 707
 708         if (intel_hdmi->has_audio) {
 709                 /* Proper support for digital audio needs a new logic and a new set
 710                  * of registers, so we leave it for future patch bombing.
 711                  */
 712                 DRM_DEBUG_DRIVER("HDMI audio on pipe %c not yet supported on DDI\n",
 713                                  pipe_name(intel_crtc->pipe));
 714         }
 715
 716         /* Enable PIPE_DDI_FUNC_CTL for the pipe to work in HDMI mode */
 717         temp = I915_READ(DDI_FUNC_CTL(pipe));
 718         temp &= ~PIPE_DDI_PORT_MASK;
 719         temp &= ~PIPE_DDI_BPC_12;
 720         temp |= PIPE_DDI_SELECT_PORT(port) |
 721                         PIPE_DDI_MODE_SELECT_HDMI |
 722                         ((intel_crtc->bpp > 24) ?
 723                                 PIPE_DDI_BPC_12 :
 724                                 PIPE_DDI_BPC_8) |
 725                         PIPE_DDI_FUNC_ENABLE;
 726
 727         I915_WRITE(DDI_FUNC_CTL(pipe), temp);
 728
 729         intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
 730         intel_hdmi_set_spd_infoframe(encoder);
 731 }
 732
 733 void intel_ddi_dpms(struct drm_encoder *encoder, int mode)
 734 {
 735         struct drm_device *dev = encoder->dev;
 736         struct drm_i915_private *dev_priv = dev->dev_private;
 737         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 738         int port = intel_hdmi->ddi_port;
 739         u32 temp;
 740
 741         temp = I915_READ(DDI_BUF_CTL(port));
 742
 743         if (mode != DRM_MODE_DPMS_ON) {
 744                 temp &= ~DDI_BUF_CTL_ENABLE;
 745         } else {
 746                 temp |= DDI_BUF_CTL_ENABLE;
 747         }
 748
 749         /* Enable DDI_BUF_CTL. In HDMI/DVI mode, the port width,
 750          * and swing/emphasis values are ignored so nothing special needs
 751          * to be done besides enabling the port.
 752          */
 753         I915_WRITE(DDI_BUF_CTL(port),
 754                         temp);
 755 }