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 <[email protected]>
  25  *
  26  */
  27
  28 #include <drm/drm_scdc_helper.h>
  29 #include "i915_drv.h"
  30 #include "intel_drv.h"
  31
  32 struct ddi_buf_trans {
  33         u32 trans1;     /* balance leg enable, de-emph level */
  34         u32 trans2;     /* vref sel, vswing */
  35         u8 i_boost;     /* SKL: I_boost; valid: 0x0, 0x1, 0x3, 0x7 */
  36 };
  37
  38 static const u8 index_to_dp_signal_levels[] = {
  39         [0] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0,
  40         [1] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1,
  41         [2] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2,
  42         [3] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3,
  43         [4] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0,
  44         [5] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1,
  45         [6] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2,
  46         [7] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0,
  47         [8] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1,
  48         [9] = DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0,
  49 };
  50
  51 /* HDMI/DVI modes ignore everything but the last 2 items. So we share
  52  * them for both DP and FDI transports, allowing those ports to
  53  * automatically adapt to HDMI connections as well
  54  */
  55 static const struct ddi_buf_trans hsw_ddi_translations_dp[] = {
  56         { 0x00FFFFFF, 0x0006000E, 0x0 },
  57         { 0x00D75FFF, 0x0005000A, 0x0 },
  58         { 0x00C30FFF, 0x00040006, 0x0 },
  59         { 0x80AAAFFF, 0x000B0000, 0x0 },
  60         { 0x00FFFFFF, 0x0005000A, 0x0 },
  61         { 0x00D75FFF, 0x000C0004, 0x0 },
  62         { 0x80C30FFF, 0x000B0000, 0x0 },
  63         { 0x00FFFFFF, 0x00040006, 0x0 },
  64         { 0x80D75FFF, 0x000B0000, 0x0 },
  65 };
  66
  67 static const struct ddi_buf_trans hsw_ddi_translations_fdi[] = {
  68         { 0x00FFFFFF, 0x0007000E, 0x0 },
  69         { 0x00D75FFF, 0x000F000A, 0x0 },
  70         { 0x00C30FFF, 0x00060006, 0x0 },
  71         { 0x00AAAFFF, 0x001E0000, 0x0 },
  72         { 0x00FFFFFF, 0x000F000A, 0x0 },
  73         { 0x00D75FFF, 0x00160004, 0x0 },
  74         { 0x00C30FFF, 0x001E0000, 0x0 },
  75         { 0x00FFFFFF, 0x00060006, 0x0 },
  76         { 0x00D75FFF, 0x001E0000, 0x0 },
  77 };
  78
  79 static const struct ddi_buf_trans hsw_ddi_translations_hdmi[] = {
  80                                         /* Idx  NT mV d T mV d  db      */
  81         { 0x00FFFFFF, 0x0006000E, 0x0 },/* 0:   400     400     0       */
  82         { 0x00E79FFF, 0x000E000C, 0x0 },/* 1:   400     500     2       */
  83         { 0x00D75FFF, 0x0005000A, 0x0 },/* 2:   400     600     3.5     */
  84         { 0x00FFFFFF, 0x0005000A, 0x0 },/* 3:   600     600     0       */
  85         { 0x00E79FFF, 0x001D0007, 0x0 },/* 4:   600     750     2       */
  86         { 0x00D75FFF, 0x000C0004, 0x0 },/* 5:   600     900     3.5     */
  87         { 0x00FFFFFF, 0x00040006, 0x0 },/* 6:   800     800     0       */
  88         { 0x80E79FFF, 0x00030002, 0x0 },/* 7:   800     1000    2       */
  89         { 0x00FFFFFF, 0x00140005, 0x0 },/* 8:   850     850     0       */
  90         { 0x00FFFFFF, 0x000C0004, 0x0 },/* 9:   900     900     0       */
  91         { 0x00FFFFFF, 0x001C0003, 0x0 },/* 10:  950     950     0       */
  92         { 0x80FFFFFF, 0x00030002, 0x0 },/* 11:  1000    1000    0       */
  93 };
  94
  95 static const struct ddi_buf_trans bdw_ddi_translations_edp[] = {
  96         { 0x00FFFFFF, 0x00000012, 0x0 },
  97         { 0x00EBAFFF, 0x00020011, 0x0 },
  98         { 0x00C71FFF, 0x0006000F, 0x0 },
  99         { 0x00AAAFFF, 0x000E000A, 0x0 },
 100         { 0x00FFFFFF, 0x00020011, 0x0 },
 101         { 0x00DB6FFF, 0x0005000F, 0x0 },
 102         { 0x00BEEFFF, 0x000A000C, 0x0 },
 103         { 0x00FFFFFF, 0x0005000F, 0x0 },
 104         { 0x00DB6FFF, 0x000A000C, 0x0 },
 105 };
 106
 107 static const struct ddi_buf_trans bdw_ddi_translations_dp[] = {
 108         { 0x00FFFFFF, 0x0007000E, 0x0 },
 109         { 0x00D75FFF, 0x000E000A, 0x0 },
 110         { 0x00BEFFFF, 0x00140006, 0x0 },
 111         { 0x80B2CFFF, 0x001B0002, 0x0 },
 112         { 0x00FFFFFF, 0x000E000A, 0x0 },
 113         { 0x00DB6FFF, 0x00160005, 0x0 },
 114         { 0x80C71FFF, 0x001A0002, 0x0 },
 115         { 0x00F7DFFF, 0x00180004, 0x0 },
 116         { 0x80D75FFF, 0x001B0002, 0x0 },
 117 };
 118
 119 static const struct ddi_buf_trans bdw_ddi_translations_fdi[] = {
 120         { 0x00FFFFFF, 0x0001000E, 0x0 },
 121         { 0x00D75FFF, 0x0004000A, 0x0 },
 122         { 0x00C30FFF, 0x00070006, 0x0 },
 123         { 0x00AAAFFF, 0x000C0000, 0x0 },
 124         { 0x00FFFFFF, 0x0004000A, 0x0 },
 125         { 0x00D75FFF, 0x00090004, 0x0 },
 126         { 0x00C30FFF, 0x000C0000, 0x0 },
 127         { 0x00FFFFFF, 0x00070006, 0x0 },
 128         { 0x00D75FFF, 0x000C0000, 0x0 },
 129 };
 130
 131 static const struct ddi_buf_trans bdw_ddi_translations_hdmi[] = {
 132                                         /* Idx  NT mV d T mV df db      */
 133         { 0x00FFFFFF, 0x0007000E, 0x0 },/* 0:   400     400     0       */
 134         { 0x00D75FFF, 0x000E000A, 0x0 },/* 1:   400     600     3.5     */
 135         { 0x00BEFFFF, 0x00140006, 0x0 },/* 2:   400     800     6       */
 136         { 0x00FFFFFF, 0x0009000D, 0x0 },/* 3:   450     450     0       */
 137         { 0x00FFFFFF, 0x000E000A, 0x0 },/* 4:   600     600     0       */
 138         { 0x00D7FFFF, 0x00140006, 0x0 },/* 5:   600     800     2.5     */
 139         { 0x80CB2FFF, 0x001B0002, 0x0 },/* 6:   600     1000    4.5     */
 140         { 0x00FFFFFF, 0x00140006, 0x0 },/* 7:   800     800     0       */
 141         { 0x80E79FFF, 0x001B0002, 0x0 },/* 8:   800     1000    2       */
 142         { 0x80FFFFFF, 0x001B0002, 0x0 },/* 9:   1000    1000    0       */
 143 };
 144
 145 /* Skylake H and S */
 146 static const struct ddi_buf_trans skl_ddi_translations_dp[] = {
 147         { 0x00002016, 0x000000A0, 0x0 },
 148         { 0x00005012, 0x0000009B, 0x0 },
 149         { 0x00007011, 0x00000088, 0x0 },
 150         { 0x80009010, 0x000000C0, 0x1 },
 151         { 0x00002016, 0x0000009B, 0x0 },
 152         { 0x00005012, 0x00000088, 0x0 },
 153         { 0x80007011, 0x000000C0, 0x1 },
 154         { 0x00002016, 0x000000DF, 0x0 },
 155         { 0x80005012, 0x000000C0, 0x1 },
 156 };
 157
 158 /* Skylake U */
 159 static const struct ddi_buf_trans skl_u_ddi_translations_dp[] = {
 160         { 0x0000201B, 0x000000A2, 0x0 },
 161         { 0x00005012, 0x00000088, 0x0 },
 162         { 0x80007011, 0x000000CD, 0x1 },
 163         { 0x80009010, 0x000000C0, 0x1 },
 164         { 0x0000201B, 0x0000009D, 0x0 },
 165         { 0x80005012, 0x000000C0, 0x1 },
 166         { 0x80007011, 0x000000C0, 0x1 },
 167         { 0x00002016, 0x00000088, 0x0 },
 168         { 0x80005012, 0x000000C0, 0x1 },
 169 };
 170
 171 /* Skylake Y */
 172 static const struct ddi_buf_trans skl_y_ddi_translations_dp[] = {
 173         { 0x00000018, 0x000000A2, 0x0 },
 174         { 0x00005012, 0x00000088, 0x0 },
 175         { 0x80007011, 0x000000CD, 0x3 },
 176         { 0x80009010, 0x000000C0, 0x3 },
 177         { 0x00000018, 0x0000009D, 0x0 },
 178         { 0x80005012, 0x000000C0, 0x3 },
 179         { 0x80007011, 0x000000C0, 0x3 },
 180         { 0x00000018, 0x00000088, 0x0 },
 181         { 0x80005012, 0x000000C0, 0x3 },
 182 };
 183
 184 /* Kabylake H and S */
 185 static const struct ddi_buf_trans kbl_ddi_translations_dp[] = {
 186         { 0x00002016, 0x000000A0, 0x0 },
 187         { 0x00005012, 0x0000009B, 0x0 },
 188         { 0x00007011, 0x00000088, 0x0 },
 189         { 0x80009010, 0x000000C0, 0x1 },
 190         { 0x00002016, 0x0000009B, 0x0 },
 191         { 0x00005012, 0x00000088, 0x0 },
 192         { 0x80007011, 0x000000C0, 0x1 },
 193         { 0x00002016, 0x00000097, 0x0 },
 194         { 0x80005012, 0x000000C0, 0x1 },
 195 };
 196
 197 /* Kabylake U */
 198 static const struct ddi_buf_trans kbl_u_ddi_translations_dp[] = {
 199         { 0x0000201B, 0x000000A1, 0x0 },
 200         { 0x00005012, 0x00000088, 0x0 },
 201         { 0x80007011, 0x000000CD, 0x3 },
 202         { 0x80009010, 0x000000C0, 0x3 },
 203         { 0x0000201B, 0x0000009D, 0x0 },
 204         { 0x80005012, 0x000000C0, 0x3 },
 205         { 0x80007011, 0x000000C0, 0x3 },
 206         { 0x00002016, 0x0000004F, 0x0 },
 207         { 0x80005012, 0x000000C0, 0x3 },
 208 };
 209
 210 /* Kabylake Y */
 211 static const struct ddi_buf_trans kbl_y_ddi_translations_dp[] = {
 212         { 0x00001017, 0x000000A1, 0x0 },
 213         { 0x00005012, 0x00000088, 0x0 },
 214         { 0x80007011, 0x000000CD, 0x3 },
 215         { 0x8000800F, 0x000000C0, 0x3 },
 216         { 0x00001017, 0x0000009D, 0x0 },
 217         { 0x80005012, 0x000000C0, 0x3 },
 218         { 0x80007011, 0x000000C0, 0x3 },
 219         { 0x00001017, 0x0000004C, 0x0 },
 220         { 0x80005012, 0x000000C0, 0x3 },
 221 };
 222
 223 /*
 224  * Skylake/Kabylake H and S
 225  * eDP 1.4 low vswing translation parameters
 226  */
 227 static const struct ddi_buf_trans skl_ddi_translations_edp[] = {
 228         { 0x00000018, 0x000000A8, 0x0 },
 229         { 0x00004013, 0x000000A9, 0x0 },
 230         { 0x00007011, 0x000000A2, 0x0 },
 231         { 0x00009010, 0x0000009C, 0x0 },
 232         { 0x00000018, 0x000000A9, 0x0 },
 233         { 0x00006013, 0x000000A2, 0x0 },
 234         { 0x00007011, 0x000000A6, 0x0 },
 235         { 0x00000018, 0x000000AB, 0x0 },
 236         { 0x00007013, 0x0000009F, 0x0 },
 237         { 0x00000018, 0x000000DF, 0x0 },
 238 };
 239
 240 /*
 241  * Skylake/Kabylake U
 242  * eDP 1.4 low vswing translation parameters
 243  */
 244 static const struct ddi_buf_trans skl_u_ddi_translations_edp[] = {
 245         { 0x00000018, 0x000000A8, 0x0 },
 246         { 0x00004013, 0x000000A9, 0x0 },
 247         { 0x00007011, 0x000000A2, 0x0 },
 248         { 0x00009010, 0x0000009C, 0x0 },
 249         { 0x00000018, 0x000000A9, 0x0 },
 250         { 0x00006013, 0x000000A2, 0x0 },
 251         { 0x00007011, 0x000000A6, 0x0 },
 252         { 0x00002016, 0x000000AB, 0x0 },
 253         { 0x00005013, 0x0000009F, 0x0 },
 254         { 0x00000018, 0x000000DF, 0x0 },
 255 };
 256
 257 /*
 258  * Skylake/Kabylake Y
 259  * eDP 1.4 low vswing translation parameters
 260  */
 261 static const struct ddi_buf_trans skl_y_ddi_translations_edp[] = {
 262         { 0x00000018, 0x000000A8, 0x0 },
 263         { 0x00004013, 0x000000AB, 0x0 },
 264         { 0x00007011, 0x000000A4, 0x0 },
 265         { 0x00009010, 0x000000DF, 0x0 },
 266         { 0x00000018, 0x000000AA, 0x0 },
 267         { 0x00006013, 0x000000A4, 0x0 },
 268         { 0x00007011, 0x0000009D, 0x0 },
 269         { 0x00000018, 0x000000A0, 0x0 },
 270         { 0x00006012, 0x000000DF, 0x0 },
 271         { 0x00000018, 0x0000008A, 0x0 },
 272 };
 273
 274 /* Skylake/Kabylake U, H and S */
 275 static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = {
 276         { 0x00000018, 0x000000AC, 0x0 },
 277         { 0x00005012, 0x0000009D, 0x0 },
 278         { 0x00007011, 0x00000088, 0x0 },
 279         { 0x00000018, 0x000000A1, 0x0 },
 280         { 0x00000018, 0x00000098, 0x0 },
 281         { 0x00004013, 0x00000088, 0x0 },
 282         { 0x80006012, 0x000000CD, 0x1 },
 283         { 0x00000018, 0x000000DF, 0x0 },
 284         { 0x80003015, 0x000000CD, 0x1 },        /* Default */
 285         { 0x80003015, 0x000000C0, 0x1 },
 286         { 0x80000018, 0x000000C0, 0x1 },
 287 };
 288
 289 /* Skylake/Kabylake Y */
 290 static const struct ddi_buf_trans skl_y_ddi_translations_hdmi[] = {
 291         { 0x00000018, 0x000000A1, 0x0 },
 292         { 0x00005012, 0x000000DF, 0x0 },
 293         { 0x80007011, 0x000000CB, 0x3 },
 294         { 0x00000018, 0x000000A4, 0x0 },
 295         { 0x00000018, 0x0000009D, 0x0 },
 296         { 0x00004013, 0x00000080, 0x0 },
 297         { 0x80006013, 0x000000C0, 0x3 },
 298         { 0x00000018, 0x0000008A, 0x0 },
 299         { 0x80003015, 0x000000C0, 0x3 },        /* Default */
 300         { 0x80003015, 0x000000C0, 0x3 },
 301         { 0x80000018, 0x000000C0, 0x3 },
 302 };
 303
 304 struct bxt_ddi_buf_trans {
 305         u8 margin;      /* swing value */
 306         u8 scale;       /* scale value */
 307         u8 enable;      /* scale enable */
 308         u8 deemphasis;
 309 };
 310
 311 static const struct bxt_ddi_buf_trans bxt_ddi_translations_dp[] = {
 312                                         /* Idx  NT mV diff      db  */
 313         { 52,  0x9A, 0, 128, }, /* 0:   400             0   */
 314         { 78,  0x9A, 0, 85,  }, /* 1:   400             3.5 */
 315         { 104, 0x9A, 0, 64,  }, /* 2:   400             6   */
 316         { 154, 0x9A, 0, 43,  }, /* 3:   400             9.5 */
 317         { 77,  0x9A, 0, 128, }, /* 4:   600             0   */
 318         { 116, 0x9A, 0, 85,  }, /* 5:   600             3.5 */
 319         { 154, 0x9A, 0, 64,  }, /* 6:   600             6   */
 320         { 102, 0x9A, 0, 128, }, /* 7:   800             0   */
 321         { 154, 0x9A, 0, 85,  }, /* 8:   800             3.5 */
 322         { 154, 0x9A, 1, 128, }, /* 9:   1200            0   */
 323 };
 324
 325 static const struct bxt_ddi_buf_trans bxt_ddi_translations_edp[] = {
 326                                         /* Idx  NT mV diff      db  */
 327         { 26, 0, 0, 128, },     /* 0:   200             0   */
 328         { 38, 0, 0, 112, },     /* 1:   200             1.5 */
 329         { 48, 0, 0, 96,  },     /* 2:   200             4   */
 330         { 54, 0, 0, 69,  },     /* 3:   200             6   */
 331         { 32, 0, 0, 128, },     /* 4:   250             0   */
 332         { 48, 0, 0, 104, },     /* 5:   250             1.5 */
 333         { 54, 0, 0, 85,  },     /* 6:   250             4   */
 334         { 43, 0, 0, 128, },     /* 7:   300             0   */
 335         { 54, 0, 0, 101, },     /* 8:   300             1.5 */
 336         { 48, 0, 0, 128, },     /* 9:   300             0   */
 337 };
 338
 339 /* BSpec has 2 recommended values - entries 0 and 8.
 340  * Using the entry with higher vswing.
 341  */
 342 static const struct bxt_ddi_buf_trans bxt_ddi_translations_hdmi[] = {
 343                                         /* Idx  NT mV diff      db  */
 344         { 52,  0x9A, 0, 128, }, /* 0:   400             0   */
 345         { 52,  0x9A, 0, 85,  }, /* 1:   400             3.5 */
 346         { 52,  0x9A, 0, 64,  }, /* 2:   400             6   */
 347         { 42,  0x9A, 0, 43,  }, /* 3:   400             9.5 */
 348         { 77,  0x9A, 0, 128, }, /* 4:   600             0   */
 349         { 77,  0x9A, 0, 85,  }, /* 5:   600             3.5 */
 350         { 77,  0x9A, 0, 64,  }, /* 6:   600             6   */
 351         { 102, 0x9A, 0, 128, }, /* 7:   800             0   */
 352         { 102, 0x9A, 0, 85,  }, /* 8:   800             3.5 */
 353         { 154, 0x9A, 1, 128, }, /* 9:   1200            0   */
 354 };
 355
 356 struct cnl_ddi_buf_trans {
 357         u8 dw2_swing_sel;
 358         u8 dw7_n_scalar;
 359         u8 dw4_cursor_coeff;
 360         u8 dw4_post_cursor_2;
 361         u8 dw4_post_cursor_1;
 362 };
 363
 364 /* Voltage Swing Programming for VccIO 0.85V for DP */
 365 static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_0_85V[] = {
 366                                                 /* NT mV Trans mV db    */
 367         { 0xA, 0x5D, 0x3F, 0x00, 0x00 },        /* 350   350      0.0   */
 368         { 0xA, 0x6A, 0x38, 0x00, 0x07 },        /* 350   500      3.1   */
 369         { 0xB, 0x7A, 0x32, 0x00, 0x0D },        /* 350   700      6.0   */
 370         { 0x6, 0x7C, 0x2D, 0x00, 0x12 },        /* 350   900      8.2   */
 371         { 0xA, 0x69, 0x3F, 0x00, 0x00 },        /* 500   500      0.0   */
 372         { 0xB, 0x7A, 0x36, 0x00, 0x09 },        /* 500   700      2.9   */
 373         { 0x6, 0x7C, 0x30, 0x00, 0x0F },        /* 500   900      5.1   */
 374         { 0xB, 0x7D, 0x3C, 0x00, 0x03 },        /* 650   725      0.9   */
 375         { 0x6, 0x7C, 0x34, 0x00, 0x0B },        /* 600   900      3.5   */
 376         { 0x6, 0x7B, 0x3F, 0x00, 0x00 },        /* 900   900      0.0   */
 377 };
 378
 379 /* Voltage Swing Programming for VccIO 0.85V for HDMI */
 380 static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_0_85V[] = {
 381                                                 /* NT mV Trans mV db    */
 382         { 0xA, 0x60, 0x3F, 0x00, 0x00 },        /* 450   450      0.0   */
 383         { 0xB, 0x73, 0x36, 0x00, 0x09 },        /* 450   650      3.2   */
 384         { 0x6, 0x7F, 0x31, 0x00, 0x0E },        /* 450   850      5.5   */
 385         { 0xB, 0x73, 0x3F, 0x00, 0x00 },        /* 650   650      0.0   */
 386         { 0x6, 0x7F, 0x37, 0x00, 0x08 },        /* 650   850      2.3   */
 387         { 0x6, 0x7F, 0x3F, 0x00, 0x00 },        /* 850   850      0.0   */
 388         { 0x6, 0x7F, 0x35, 0x00, 0x0A },        /* 600   850      3.0   */
 389 };
 390
 391 /* Voltage Swing Programming for VccIO 0.85V for eDP */
 392 static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_0_85V[] = {
 393                                                 /* NT mV Trans mV db    */
 394         { 0xA, 0x66, 0x3A, 0x00, 0x05 },        /* 384   500      2.3   */
 395         { 0x0, 0x7F, 0x38, 0x00, 0x07 },        /* 153   200      2.3   */
 396         { 0x8, 0x7F, 0x38, 0x00, 0x07 },        /* 192   250      2.3   */
 397         { 0x1, 0x7F, 0x38, 0x00, 0x07 },        /* 230   300      2.3   */
 398         { 0x9, 0x7F, 0x38, 0x00, 0x07 },        /* 269   350      2.3   */
 399         { 0xA, 0x66, 0x3C, 0x00, 0x03 },        /* 446   500      1.0   */
 400         { 0xB, 0x70, 0x3C, 0x00, 0x03 },        /* 460   600      2.3   */
 401         { 0xC, 0x75, 0x3C, 0x00, 0x03 },        /* 537   700      2.3   */
 402         { 0x2, 0x7F, 0x3F, 0x00, 0x00 },        /* 400   400      0.0   */
 403 };
 404
 405 /* Voltage Swing Programming for VccIO 0.95V for DP */
 406 static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_0_95V[] = {
 407                                                 /* NT mV Trans mV db    */
 408         { 0xA, 0x5D, 0x3F, 0x00, 0x00 },        /* 350   350      0.0   */
 409         { 0xA, 0x6A, 0x38, 0x00, 0x07 },        /* 350   500      3.1   */
 410         { 0xB, 0x7A, 0x32, 0x00, 0x0D },        /* 350   700      6.0   */
 411         { 0x6, 0x7C, 0x2D, 0x00, 0x12 },        /* 350   900      8.2   */
 412         { 0xA, 0x69, 0x3F, 0x00, 0x00 },        /* 500   500      0.0   */
 413         { 0xB, 0x7A, 0x36, 0x00, 0x09 },        /* 500   700      2.9   */
 414         { 0x6, 0x7C, 0x30, 0x00, 0x0F },        /* 500   900      5.1   */
 415         { 0xB, 0x7D, 0x3C, 0x00, 0x03 },        /* 650   725      0.9   */
 416         { 0x6, 0x7C, 0x34, 0x00, 0x0B },        /* 600   900      3.5   */
 417         { 0x6, 0x7B, 0x3F, 0x00, 0x00 },        /* 900   900      0.0   */
 418 };
 419
 420 /* Voltage Swing Programming for VccIO 0.95V for HDMI */
 421 static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_0_95V[] = {
 422                                                 /* NT mV Trans mV db    */
 423         { 0xA, 0x5C, 0x3F, 0x00, 0x00 },        /* 400   400      0.0   */
 424         { 0xB, 0x69, 0x37, 0x00, 0x08 },        /* 400   600      3.5   */
 425         { 0x5, 0x76, 0x31, 0x00, 0x0E },        /* 400   800      6.0   */
 426         { 0xA, 0x5E, 0x3F, 0x00, 0x00 },        /* 450   450      0.0   */
 427         { 0xB, 0x69, 0x3F, 0x00, 0x00 },        /* 600   600      0.0   */
 428         { 0xB, 0x79, 0x35, 0x00, 0x0A },        /* 600   850      3.0   */
 429         { 0x6, 0x7D, 0x32, 0x00, 0x0D },        /* 600   1000     4.4   */
 430         { 0x5, 0x76, 0x3F, 0x00, 0x00 },        /* 800   800      0.0   */
 431         { 0x6, 0x7D, 0x39, 0x00, 0x06 },        /* 800   1000     1.9   */
 432         { 0x6, 0x7F, 0x39, 0x00, 0x06 },        /* 850   1050     1.8   */
 433         { 0x6, 0x7F, 0x3F, 0x00, 0x00 },        /* 1050  1050     0.0   */
 434 };
 435
 436 /* Voltage Swing Programming for VccIO 0.95V for eDP */
 437 static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_0_95V[] = {
 438                                                 /* NT mV Trans mV db    */
 439         { 0xA, 0x61, 0x3A, 0x00, 0x05 },        /* 384   500      2.3   */
 440         { 0x0, 0x7F, 0x38, 0x00, 0x07 },        /* 153   200      2.3   */
 441         { 0x8, 0x7F, 0x38, 0x00, 0x07 },        /* 192   250      2.3   */
 442         { 0x1, 0x7F, 0x38, 0x00, 0x07 },        /* 230   300      2.3   */
 443         { 0x9, 0x7F, 0x38, 0x00, 0x07 },        /* 269   350      2.3   */
 444         { 0xA, 0x61, 0x3C, 0x00, 0x03 },        /* 446   500      1.0   */
 445         { 0xB, 0x68, 0x39, 0x00, 0x06 },        /* 460   600      2.3   */
 446         { 0xC, 0x6E, 0x39, 0x00, 0x06 },        /* 537   700      2.3   */
 447         { 0x4, 0x7F, 0x3A, 0x00, 0x05 },        /* 460   600      2.3   */
 448         { 0x2, 0x7F, 0x3F, 0x00, 0x00 },        /* 400   400      0.0   */
 449 };
 450
 451 /* Voltage Swing Programming for VccIO 1.05V for DP */
 452 static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_1_05V[] = {
 453                                                 /* NT mV Trans mV db    */
 454         { 0xA, 0x58, 0x3F, 0x00, 0x00 },        /* 400   400      0.0   */
 455         { 0xB, 0x64, 0x37, 0x00, 0x08 },        /* 400   600      3.5   */
 456         { 0x5, 0x70, 0x31, 0x00, 0x0E },        /* 400   800      6.0   */
 457         { 0x6, 0x7F, 0x2C, 0x00, 0x13 },        /* 400   1050     8.4   */
 458         { 0xB, 0x64, 0x3F, 0x00, 0x00 },        /* 600   600      0.0   */
 459         { 0x5, 0x73, 0x35, 0x00, 0x0A },        /* 600   850      3.0   */
 460         { 0x6, 0x7F, 0x30, 0x00, 0x0F },        /* 550   1050     5.6   */
 461         { 0x5, 0x76, 0x3E, 0x00, 0x01 },        /* 850   900      0.5   */
 462         { 0x6, 0x7F, 0x36, 0x00, 0x09 },        /* 750   1050     2.9   */
 463         { 0x6, 0x7F, 0x3F, 0x00, 0x00 },        /* 1050  1050     0.0   */
 464 };
 465
 466 /* Voltage Swing Programming for VccIO 1.05V for HDMI */
 467 static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_1_05V[] = {
 468                                                 /* NT mV Trans mV db    */
 469         { 0xA, 0x58, 0x3F, 0x00, 0x00 },        /* 400   400      0.0   */
 470         { 0xB, 0x64, 0x37, 0x00, 0x08 },        /* 400   600      3.5   */
 471         { 0x5, 0x70, 0x31, 0x00, 0x0E },        /* 400   800      6.0   */
 472         { 0xA, 0x5B, 0x3F, 0x00, 0x00 },        /* 450   450      0.0   */
 473         { 0xB, 0x64, 0x3F, 0x00, 0x00 },        /* 600   600      0.0   */
 474         { 0x5, 0x73, 0x35, 0x00, 0x0A },        /* 600   850      3.0   */
 475         { 0x6, 0x7C, 0x32, 0x00, 0x0D },        /* 600   1000     4.4   */
 476         { 0x5, 0x70, 0x3F, 0x00, 0x00 },        /* 800   800      0.0   */
 477         { 0x6, 0x7C, 0x39, 0x00, 0x06 },        /* 800   1000     1.9   */
 478         { 0x6, 0x7F, 0x39, 0x00, 0x06 },        /* 850   1050     1.8   */
 479         { 0x6, 0x7F, 0x3F, 0x00, 0x00 },        /* 1050  1050     0.0   */
 480 };
 481
 482 /* Voltage Swing Programming for VccIO 1.05V for eDP */
 483 static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_1_05V[] = {
 484                                                 /* NT mV Trans mV db    */
 485         { 0xA, 0x5E, 0x3A, 0x00, 0x05 },        /* 384   500      2.3   */
 486         { 0x0, 0x7F, 0x38, 0x00, 0x07 },        /* 153   200      2.3   */
 487         { 0x8, 0x7F, 0x38, 0x00, 0x07 },        /* 192   250      2.3   */
 488         { 0x1, 0x7F, 0x38, 0x00, 0x07 },        /* 230   300      2.3   */
 489         { 0x9, 0x7F, 0x38, 0x00, 0x07 },        /* 269   350      2.3   */
 490         { 0xA, 0x5E, 0x3C, 0x00, 0x03 },        /* 446   500      1.0   */
 491         { 0xB, 0x64, 0x39, 0x00, 0x06 },        /* 460   600      2.3   */
 492         { 0xE, 0x6A, 0x39, 0x00, 0x06 },        /* 537   700      2.3   */
 493         { 0x2, 0x7F, 0x3F, 0x00, 0x00 },        /* 400   400      0.0   */
 494 };
 495
 496 struct icl_combo_phy_ddi_buf_trans {
 497         u32 dw2_swing_select;
 498         u32 dw2_swing_scalar;
 499         u32 dw4_scaling;
 500 };
 501
 502 /* Voltage Swing Programming for VccIO 0.85V for DP */
 503 static const struct icl_combo_phy_ddi_buf_trans icl_combo_phy_ddi_translations_dp_hdmi_0_85V[] = {
 504                                 /* Voltage mV  db    */
 505         { 0x2, 0x98, 0x0018 },  /* 400         0.0   */
 506         { 0x2, 0x98, 0x3015 },  /* 400         3.5   */
 507         { 0x2, 0x98, 0x6012 },  /* 400         6.0   */
 508         { 0x2, 0x98, 0x900F },  /* 400         9.5   */
 509         { 0xB, 0x70, 0x0018 },  /* 600         0.0   */
 510         { 0xB, 0x70, 0x3015 },  /* 600         3.5   */
 511         { 0xB, 0x70, 0x6012 },  /* 600         6.0   */
 512         { 0x5, 0x00, 0x0018 },  /* 800         0.0   */
 513         { 0x5, 0x00, 0x3015 },  /* 800         3.5   */
 514         { 0x6, 0x98, 0x0018 },  /* 1200        0.0   */
 515 };
 516
 517 /* FIXME - After table is updated in Bspec */
 518 /* Voltage Swing Programming for VccIO 0.85V for eDP */
 519 static const struct icl_combo_phy_ddi_buf_trans icl_combo_phy_ddi_translations_edp_0_85V[] = {
 520                                 /* Voltage mV  db    */
 521         { 0x0, 0x00, 0x00 },    /* 200         0.0   */
 522         { 0x0, 0x00, 0x00 },    /* 200         1.5   */
 523         { 0x0, 0x00, 0x00 },    /* 200         4.0   */
 524         { 0x0, 0x00, 0x00 },    /* 200         6.0   */
 525         { 0x0, 0x00, 0x00 },    /* 250         0.0   */
 526         { 0x0, 0x00, 0x00 },    /* 250         1.5   */
 527         { 0x0, 0x00, 0x00 },    /* 250         4.0   */
 528         { 0x0, 0x00, 0x00 },    /* 300         0.0   */
 529         { 0x0, 0x00, 0x00 },    /* 300         1.5   */
 530         { 0x0, 0x00, 0x00 },    /* 350         0.0   */
 531 };
 532
 533 /* Voltage Swing Programming for VccIO 0.95V for DP */
 534 static const struct icl_combo_phy_ddi_buf_trans icl_combo_phy_ddi_translations_dp_hdmi_0_95V[] = {
 535                                 /* Voltage mV  db    */
 536         { 0x2, 0x98, 0x0018 },  /* 400         0.0   */
 537         { 0x2, 0x98, 0x3015 },  /* 400         3.5   */
 538         { 0x2, 0x98, 0x6012 },  /* 400         6.0   */
 539         { 0x2, 0x98, 0x900F },  /* 400         9.5   */
 540         { 0x4, 0x98, 0x0018 },  /* 600         0.0   */
 541         { 0x4, 0x98, 0x3015 },  /* 600         3.5   */
 542         { 0x4, 0x98, 0x6012 },  /* 600         6.0   */
 543         { 0x5, 0x76, 0x0018 },  /* 800         0.0   */
 544         { 0x5, 0x76, 0x3015 },  /* 800         3.5   */
 545         { 0x6, 0x98, 0x0018 },  /* 1200        0.0   */
 546 };
 547
 548 /* FIXME - After table is updated in Bspec */
 549 /* Voltage Swing Programming for VccIO 0.95V for eDP */
 550 static const struct icl_combo_phy_ddi_buf_trans icl_combo_phy_ddi_translations_edp_0_95V[] = {
 551                                 /* Voltage mV  db    */
 552         { 0x0, 0x00, 0x00 },    /* 200         0.0   */
 553         { 0x0, 0x00, 0x00 },    /* 200         1.5   */
 554         { 0x0, 0x00, 0x00 },    /* 200         4.0   */
 555         { 0x0, 0x00, 0x00 },    /* 200         6.0   */
 556         { 0x0, 0x00, 0x00 },    /* 250         0.0   */
 557         { 0x0, 0x00, 0x00 },    /* 250         1.5   */
 558         { 0x0, 0x00, 0x00 },    /* 250         4.0   */
 559         { 0x0, 0x00, 0x00 },    /* 300         0.0   */
 560         { 0x0, 0x00, 0x00 },    /* 300         1.5   */
 561         { 0x0, 0x00, 0x00 },    /* 350         0.0   */
 562 };
 563
 564 /* Voltage Swing Programming for VccIO 1.05V for DP */
 565 static const struct icl_combo_phy_ddi_buf_trans icl_combo_phy_ddi_translations_dp_hdmi_1_05V[] = {
 566                                 /* Voltage mV  db    */
 567         { 0x2, 0x98, 0x0018 },  /* 400         0.0   */
 568         { 0x2, 0x98, 0x3015 },  /* 400         3.5   */
 569         { 0x2, 0x98, 0x6012 },  /* 400         6.0   */
 570         { 0x2, 0x98, 0x900F },  /* 400         9.5   */
 571         { 0x4, 0x98, 0x0018 },  /* 600         0.0   */
 572         { 0x4, 0x98, 0x3015 },  /* 600         3.5   */
 573         { 0x4, 0x98, 0x6012 },  /* 600         6.0   */
 574         { 0x5, 0x71, 0x0018 },  /* 800         0.0   */
 575         { 0x5, 0x71, 0x3015 },  /* 800         3.5   */
 576         { 0x6, 0x98, 0x0018 },  /* 1200        0.0   */
 577 };
 578
 579 /* FIXME - After table is updated in Bspec */
 580 /* Voltage Swing Programming for VccIO 1.05V for eDP */
 581 static const struct icl_combo_phy_ddi_buf_trans icl_combo_phy_ddi_translations_edp_1_05V[] = {
 582                                 /* Voltage mV  db    */
 583         { 0x0, 0x00, 0x00 },    /* 200         0.0   */
 584         { 0x0, 0x00, 0x00 },    /* 200         1.5   */
 585         { 0x0, 0x00, 0x00 },    /* 200         4.0   */
 586         { 0x0, 0x00, 0x00 },    /* 200         6.0   */
 587         { 0x0, 0x00, 0x00 },    /* 250         0.0   */
 588         { 0x0, 0x00, 0x00 },    /* 250         1.5   */
 589         { 0x0, 0x00, 0x00 },    /* 250         4.0   */
 590         { 0x0, 0x00, 0x00 },    /* 300         0.0   */
 591         { 0x0, 0x00, 0x00 },    /* 300         1.5   */
 592         { 0x0, 0x00, 0x00 },    /* 350         0.0   */
 593 };
 594
 595 struct icl_mg_phy_ddi_buf_trans {
 596         u32 cri_txdeemph_override_5_0;
 597         u32 cri_txdeemph_override_11_6;
 598         u32 cri_txdeemph_override_17_12;
 599 };
 600
 601 static const struct icl_mg_phy_ddi_buf_trans icl_mg_phy_ddi_translations[] = {
 602                                 /* Voltage swing  pre-emphasis */
 603         { 0x0, 0x1B, 0x00 },    /* 0              0   */
 604         { 0x0, 0x23, 0x08 },    /* 0              1   */
 605         { 0x0, 0x2D, 0x12 },    /* 0              2   */
 606         { 0x0, 0x00, 0x00 },    /* 0              3   */
 607         { 0x0, 0x23, 0x00 },    /* 1              0   */
 608         { 0x0, 0x2B, 0x09 },    /* 1              1   */
 609         { 0x0, 0x2E, 0x11 },    /* 1              2   */
 610         { 0x0, 0x2F, 0x00 },    /* 2              0   */
 611         { 0x0, 0x33, 0x0C },    /* 2              1   */
 612         { 0x0, 0x00, 0x00 },    /* 3              0   */
 613 };
 614
 615 static const struct ddi_buf_trans *
 616 bdw_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
 617 {
 618         if (dev_priv->vbt.edp.low_vswing) {
 619                 *n_entries = ARRAY_SIZE(bdw_ddi_translations_edp);
 620                 return bdw_ddi_translations_edp;
 621         } else {
 622                 *n_entries = ARRAY_SIZE(bdw_ddi_translations_dp);
 623                 return bdw_ddi_translations_dp;
 624         }
 625 }
 626
 627 static const struct ddi_buf_trans *
 628 skl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries)
 629 {
 630         if (IS_SKL_ULX(dev_priv)) {
 631                 *n_entries = ARRAY_SIZE(skl_y_ddi_translations_dp);
 632                 return skl_y_ddi_translations_dp;
 633         } else if (IS_SKL_ULT(dev_priv)) {
 634                 *n_entries = ARRAY_SIZE(skl_u_ddi_translations_dp);
 635                 return skl_u_ddi_translations_dp;
 636         } else {
 637                 *n_entries = ARRAY_SIZE(skl_ddi_translations_dp);
 638                 return skl_ddi_translations_dp;
 639         }
 640 }
 641
 642 static const struct ddi_buf_trans *
 643 kbl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries)
 644 {
 645         if (IS_KBL_ULX(dev_priv)) {
 646                 *n_entries = ARRAY_SIZE(kbl_y_ddi_translations_dp);
 647                 return kbl_y_ddi_translations_dp;
 648         } else if (IS_KBL_ULT(dev_priv) || IS_CFL_ULT(dev_priv)) {
 649                 *n_entries = ARRAY_SIZE(kbl_u_ddi_translations_dp);
 650                 return kbl_u_ddi_translations_dp;
 651         } else {
 652                 *n_entries = ARRAY_SIZE(kbl_ddi_translations_dp);
 653                 return kbl_ddi_translations_dp;
 654         }
 655 }
 656
 657 static const struct ddi_buf_trans *
 658 skl_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
 659 {
 660         if (dev_priv->vbt.edp.low_vswing) {
 661                 if (IS_SKL_ULX(dev_priv) || IS_KBL_ULX(dev_priv)) {
 662                         *n_entries = ARRAY_SIZE(skl_y_ddi_translations_edp);
 663                         return skl_y_ddi_translations_edp;
 664                 } else if (IS_SKL_ULT(dev_priv) || IS_KBL_ULT(dev_priv) ||
 665                            IS_CFL_ULT(dev_priv)) {
 666                         *n_entries = ARRAY_SIZE(skl_u_ddi_translations_edp);
 667                         return skl_u_ddi_translations_edp;
 668                 } else {
 669                         *n_entries = ARRAY_SIZE(skl_ddi_translations_edp);
 670                         return skl_ddi_translations_edp;
 671                 }
 672         }
 673
 674         if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv))
 675                 return kbl_get_buf_trans_dp(dev_priv, n_entries);
 676         else
 677                 return skl_get_buf_trans_dp(dev_priv, n_entries);
 678 }
 679
 680 static const struct ddi_buf_trans *
 681 skl_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, int *n_entries)
 682 {
 683         if (IS_SKL_ULX(dev_priv) || IS_KBL_ULX(dev_priv)) {
 684                 *n_entries = ARRAY_SIZE(skl_y_ddi_translations_hdmi);
 685                 return skl_y_ddi_translations_hdmi;
 686         } else {
 687                 *n_entries = ARRAY_SIZE(skl_ddi_translations_hdmi);
 688                 return skl_ddi_translations_hdmi;
 689         }
 690 }
 691
 692 static int skl_buf_trans_num_entries(enum port port, int n_entries)
 693 {
 694         /* Only DDIA and DDIE can select the 10th register with DP */
 695         if (port == PORT_A || port == PORT_E)
 696                 return min(n_entries, 10);
 697         else
 698                 return min(n_entries, 9);
 699 }
 700
 701 static const struct ddi_buf_trans *
 702 intel_ddi_get_buf_trans_dp(struct drm_i915_private *dev_priv,
 703                            enum port port, int *n_entries)
 704 {
 705         if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) {
 706                 const struct ddi_buf_trans *ddi_translations =
 707                         kbl_get_buf_trans_dp(dev_priv, n_entries);
 708                 *n_entries = skl_buf_trans_num_entries(port, *n_entries);
 709                 return ddi_translations;
 710         } else if (IS_SKYLAKE(dev_priv)) {
 711                 const struct ddi_buf_trans *ddi_translations =
 712                         skl_get_buf_trans_dp(dev_priv, n_entries);
 713                 *n_entries = skl_buf_trans_num_entries(port, *n_entries);
 714                 return ddi_translations;
 715         } else if (IS_BROADWELL(dev_priv)) {
 716                 *n_entries = ARRAY_SIZE(bdw_ddi_translations_dp);
 717                 return  bdw_ddi_translations_dp;
 718         } else if (IS_HASWELL(dev_priv)) {
 719                 *n_entries = ARRAY_SIZE(hsw_ddi_translations_dp);
 720                 return hsw_ddi_translations_dp;
 721         }
 722
 723         *n_entries = 0;
 724         return NULL;
 725 }
 726
 727 static const struct ddi_buf_trans *
 728 intel_ddi_get_buf_trans_edp(struct drm_i915_private *dev_priv,
 729                             enum port port, int *n_entries)
 730 {
 731         if (IS_GEN9_BC(dev_priv)) {
 732                 const struct ddi_buf_trans *ddi_translations =
 733                         skl_get_buf_trans_edp(dev_priv, n_entries);
 734                 *n_entries = skl_buf_trans_num_entries(port, *n_entries);
 735                 return ddi_translations;
 736         } else if (IS_BROADWELL(dev_priv)) {
 737                 return bdw_get_buf_trans_edp(dev_priv, n_entries);
 738         } else if (IS_HASWELL(dev_priv)) {
 739                 *n_entries = ARRAY_SIZE(hsw_ddi_translations_dp);
 740                 return hsw_ddi_translations_dp;
 741         }
 742
 743         *n_entries = 0;
 744         return NULL;
 745 }
 746
 747 static const struct ddi_buf_trans *
 748 intel_ddi_get_buf_trans_fdi(struct drm_i915_private *dev_priv,
 749                             int *n_entries)
 750 {
 751         if (IS_BROADWELL(dev_priv)) {
 752                 *n_entries = ARRAY_SIZE(bdw_ddi_translations_fdi);
 753                 return bdw_ddi_translations_fdi;
 754         } else if (IS_HASWELL(dev_priv)) {
 755                 *n_entries = ARRAY_SIZE(hsw_ddi_translations_fdi);
 756                 return hsw_ddi_translations_fdi;
 757         }
 758
 759         *n_entries = 0;
 760         return NULL;
 761 }
 762
 763 static const struct ddi_buf_trans *
 764 intel_ddi_get_buf_trans_hdmi(struct drm_i915_private *dev_priv,
 765                              int *n_entries)
 766 {
 767         if (IS_GEN9_BC(dev_priv)) {
 768                 return skl_get_buf_trans_hdmi(dev_priv, n_entries);
 769         } else if (IS_BROADWELL(dev_priv)) {
 770                 *n_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi);
 771                 return bdw_ddi_translations_hdmi;
 772         } else if (IS_HASWELL(dev_priv)) {
 773                 *n_entries = ARRAY_SIZE(hsw_ddi_translations_hdmi);
 774                 return hsw_ddi_translations_hdmi;
 775         }
 776
 777         *n_entries = 0;
 778         return NULL;
 779 }
 780
 781 static const struct bxt_ddi_buf_trans *
 782 bxt_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries)
 783 {
 784         *n_entries = ARRAY_SIZE(bxt_ddi_translations_dp);
 785         return bxt_ddi_translations_dp;
 786 }
 787
 788 static const struct bxt_ddi_buf_trans *
 789 bxt_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
 790 {
 791         if (dev_priv->vbt.edp.low_vswing) {
 792                 *n_entries = ARRAY_SIZE(bxt_ddi_translations_edp);
 793                 return bxt_ddi_translations_edp;
 794         }
 795
 796         return bxt_get_buf_trans_dp(dev_priv, n_entries);
 797 }
 798
 799 static const struct bxt_ddi_buf_trans *
 800 bxt_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, int *n_entries)
 801 {
 802         *n_entries = ARRAY_SIZE(bxt_ddi_translations_hdmi);
 803         return bxt_ddi_translations_hdmi;
 804 }
 805
 806 static const struct cnl_ddi_buf_trans *
 807 cnl_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, int *n_entries)
 808 {
 809         u32 voltage = I915_READ(CNL_PORT_COMP_DW3) & VOLTAGE_INFO_MASK;
 810
 811         if (voltage == VOLTAGE_INFO_0_85V) {
 812                 *n_entries = ARRAY_SIZE(cnl_ddi_translations_hdmi_0_85V);
 813                 return cnl_ddi_translations_hdmi_0_85V;
 814         } else if (voltage == VOLTAGE_INFO_0_95V) {
 815                 *n_entries = ARRAY_SIZE(cnl_ddi_translations_hdmi_0_95V);
 816                 return cnl_ddi_translations_hdmi_0_95V;
 817         } else if (voltage == VOLTAGE_INFO_1_05V) {
 818                 *n_entries = ARRAY_SIZE(cnl_ddi_translations_hdmi_1_05V);
 819                 return cnl_ddi_translations_hdmi_1_05V;
 820         } else {
 821                 *n_entries = 1; /* shut up gcc */
 822                 MISSING_CASE(voltage);
 823         }
 824         return NULL;
 825 }
 826
 827 static const struct cnl_ddi_buf_trans *
 828 cnl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries)
 829 {
 830         u32 voltage = I915_READ(CNL_PORT_COMP_DW3) & VOLTAGE_INFO_MASK;
 831
 832         if (voltage == VOLTAGE_INFO_0_85V) {
 833                 *n_entries = ARRAY_SIZE(cnl_ddi_translations_dp_0_85V);
 834                 return cnl_ddi_translations_dp_0_85V;
 835         } else if (voltage == VOLTAGE_INFO_0_95V) {
 836                 *n_entries = ARRAY_SIZE(cnl_ddi_translations_dp_0_95V);
 837                 return cnl_ddi_translations_dp_0_95V;
 838         } else if (voltage == VOLTAGE_INFO_1_05V) {
 839                 *n_entries = ARRAY_SIZE(cnl_ddi_translations_dp_1_05V);
 840                 return cnl_ddi_translations_dp_1_05V;
 841         } else {
 842                 *n_entries = 1; /* shut up gcc */
 843                 MISSING_CASE(voltage);
 844         }
 845         return NULL;
 846 }
 847
 848 static const struct cnl_ddi_buf_trans *
 849 cnl_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
 850 {
 851         u32 voltage = I915_READ(CNL_PORT_COMP_DW3) & VOLTAGE_INFO_MASK;
 852
 853         if (dev_priv->vbt.edp.low_vswing) {
 854                 if (voltage == VOLTAGE_INFO_0_85V) {
 855                         *n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_0_85V);
 856                         return cnl_ddi_translations_edp_0_85V;
 857                 } else if (voltage == VOLTAGE_INFO_0_95V) {
 858                         *n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_0_95V);
 859                         return cnl_ddi_translations_edp_0_95V;
 860                 } else if (voltage == VOLTAGE_INFO_1_05V) {
 861                         *n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_1_05V);
 862                         return cnl_ddi_translations_edp_1_05V;
 863                 } else {
 864                         *n_entries = 1; /* shut up gcc */
 865                         MISSING_CASE(voltage);
 866                 }
 867                 return NULL;
 868         } else {
 869                 return cnl_get_buf_trans_dp(dev_priv, n_entries);
 870         }
 871 }
 872
 873 static const struct icl_combo_phy_ddi_buf_trans *
 874 icl_get_combo_buf_trans(struct drm_i915_private *dev_priv, enum port port,
 875                         int type, int *n_entries)
 876 {
 877         u32 voltage = I915_READ(ICL_PORT_COMP_DW3(port)) & VOLTAGE_INFO_MASK;
 878
 879         if (type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp.low_vswing) {
 880                 switch (voltage) {
 881                 case VOLTAGE_INFO_0_85V:
 882                         *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_edp_0_85V);
 883                         return icl_combo_phy_ddi_translations_edp_0_85V;
 884                 case VOLTAGE_INFO_0_95V:
 885                         *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_edp_0_95V);
 886                         return icl_combo_phy_ddi_translations_edp_0_95V;
 887                 case VOLTAGE_INFO_1_05V:
 888                         *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_edp_1_05V);
 889                         return icl_combo_phy_ddi_translations_edp_1_05V;
 890                 default:
 891                         MISSING_CASE(voltage);
 892                         return NULL;
 893                 }
 894         } else {
 895                 switch (voltage) {
 896                 case VOLTAGE_INFO_0_85V:
 897                         *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_dp_hdmi_0_85V);
 898                         return icl_combo_phy_ddi_translations_dp_hdmi_0_85V;
 899                 case VOLTAGE_INFO_0_95V:
 900                         *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_dp_hdmi_0_95V);
 901                         return icl_combo_phy_ddi_translations_dp_hdmi_0_95V;
 902                 case VOLTAGE_INFO_1_05V:
 903                         *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_dp_hdmi_1_05V);
 904                         return icl_combo_phy_ddi_translations_dp_hdmi_1_05V;
 905                 default:
 906                         MISSING_CASE(voltage);
 907                         return NULL;
 908                 }
 909         }
 910 }
 911
 912 static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port port)
 913 {
 914         int n_entries, level, default_entry;
 915
 916         level = dev_priv->vbt.ddi_port_info[port].hdmi_level_shift;
 917
 918         if (IS_CANNONLAKE(dev_priv)) {
 919                 cnl_get_buf_trans_hdmi(dev_priv, &n_entries);
 920                 default_entry = n_entries - 1;
 921         } else if (IS_GEN9_LP(dev_priv)) {
 922                 bxt_get_buf_trans_hdmi(dev_priv, &n_entries);
 923                 default_entry = n_entries - 1;
 924         } else if (IS_GEN9_BC(dev_priv)) {
 925                 intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries);
 926                 default_entry = 8;
 927         } else if (IS_BROADWELL(dev_priv)) {
 928                 intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries);
 929                 default_entry = 7;
 930         } else if (IS_HASWELL(dev_priv)) {
 931                 intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries);
 932                 default_entry = 6;
 933         } else {
 934                 WARN(1, "ddi translation table missing\n");
 935                 return 0;
 936         }
 937
 938         /* Choose a good default if VBT is badly populated */
 939         if (level == HDMI_LEVEL_SHIFT_UNKNOWN || level >= n_entries)
 940                 level = default_entry;
 941
 942         if (WARN_ON_ONCE(n_entries == 0))
 943                 return 0;
 944         if (WARN_ON_ONCE(level >= n_entries))
 945                 level = n_entries - 1;
 946
 947         return level;
 948 }
 949
 950 /*
 951  * Starting with Haswell, DDI port buffers must be programmed with correct
 952  * values in advance. This function programs the correct values for
 953  * DP/eDP/FDI use cases.
 954  */
 955 static void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder,
 956                                          const struct intel_crtc_state *crtc_state)
 957 {
 958         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 959         u32 iboost_bit = 0;
 960         int i, n_entries;
 961         enum port port = encoder->port;
 962         const struct ddi_buf_trans *ddi_translations;
 963
 964         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
 965                 ddi_translations = intel_ddi_get_buf_trans_fdi(dev_priv,
 966                                                                &n_entries);
 967         else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
 968                 ddi_translations = intel_ddi_get_buf_trans_edp(dev_priv, port,
 969                                                                &n_entries);
 970         else
 971                 ddi_translations = intel_ddi_get_buf_trans_dp(dev_priv, port,
 972                                                               &n_entries);
 973
 974         /* If we're boosting the current, set bit 31 of trans1 */
 975         if (IS_GEN9_BC(dev_priv) &&
 976             dev_priv->vbt.ddi_port_info[port].dp_boost_level)
 977                 iboost_bit = DDI_BUF_BALANCE_LEG_ENABLE;
 978
 979         for (i = 0; i < n_entries; i++) {
 980                 I915_WRITE(DDI_BUF_TRANS_LO(port, i),
 981                            ddi_translations[i].trans1 | iboost_bit);
 982                 I915_WRITE(DDI_BUF_TRANS_HI(port, i),
 983                            ddi_translations[i].trans2);
 984         }
 985 }
 986
 987 /*
 988  * Starting with Haswell, DDI port buffers must be programmed with correct
 989  * values in advance. This function programs the correct values for
 990  * HDMI/DVI use cases.
 991  */
 992 static void intel_prepare_hdmi_ddi_buffers(struct intel_encoder *encoder,
 993                                            int level)
 994 {
 995         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 996         u32 iboost_bit = 0;
 997         int n_entries;
 998         enum port port = encoder->port;
 999         const struct ddi_buf_trans *ddi_translations;
1000
1001         ddi_translations = intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries);
1002
1003         if (WARN_ON_ONCE(!ddi_translations))
1004                 return;
1005         if (WARN_ON_ONCE(level >= n_entries))
1006                 level = n_entries - 1;
1007
1008         /* If we're boosting the current, set bit 31 of trans1 */
1009         if (IS_GEN9_BC(dev_priv) &&
1010             dev_priv->vbt.ddi_port_info[port].hdmi_boost_level)
1011                 iboost_bit = DDI_BUF_BALANCE_LEG_ENABLE;
1012
1013         /* Entry 9 is for HDMI: */
1014         I915_WRITE(DDI_BUF_TRANS_LO(port, 9),
1015                    ddi_translations[level].trans1 | iboost_bit);
1016         I915_WRITE(DDI_BUF_TRANS_HI(port, 9),
1017                    ddi_translations[level].trans2);
1018 }
1019
1020 static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
1021                                     enum port port)
1022 {
1023         i915_reg_t reg = DDI_BUF_CTL(port);
1024         int i;
1025
1026         for (i = 0; i < 16; i++) {
1027                 udelay(1);
1028                 if (I915_READ(reg) & DDI_BUF_IS_IDLE)
1029                         return;
1030         }
1031         DRM_ERROR("Timeout waiting for DDI BUF %c idle bit\n", port_name(port));
1032 }
1033
1034 static uint32_t hsw_pll_to_ddi_pll_sel(const struct intel_shared_dpll *pll)
1035 {
1036         switch (pll->info->id) {
1037         case DPLL_ID_WRPLL1:
1038                 return PORT_CLK_SEL_WRPLL1;
1039         case DPLL_ID_WRPLL2:
1040                 return PORT_CLK_SEL_WRPLL2;
1041         case DPLL_ID_SPLL:
1042                 return PORT_CLK_SEL_SPLL;
1043         case DPLL_ID_LCPLL_810:
1044                 return PORT_CLK_SEL_LCPLL_810;
1045         case DPLL_ID_LCPLL_1350:
1046                 return PORT_CLK_SEL_LCPLL_1350;
1047         case DPLL_ID_LCPLL_2700:
1048                 return PORT_CLK_SEL_LCPLL_2700;
1049         default:
1050                 MISSING_CASE(pll->info->id);
1051                 return PORT_CLK_SEL_NONE;
1052         }
1053 }
1054
1055 static uint32_t icl_pll_to_ddi_pll_sel(struct intel_encoder *encoder,
1056                                        const struct intel_shared_dpll *pll)
1057 {
1058         const enum intel_dpll_id id = pll->info->id;
1059
1060         switch (id) {
1061         default:
1062                 MISSING_CASE(id);
1063         case DPLL_ID_ICL_DPLL0:
1064         case DPLL_ID_ICL_DPLL1:
1065                 return DDI_CLK_SEL_NONE;
1066         case DPLL_ID_ICL_MGPLL1:
1067         case DPLL_ID_ICL_MGPLL2:
1068         case DPLL_ID_ICL_MGPLL3:
1069         case DPLL_ID_ICL_MGPLL4:
1070                 return DDI_CLK_SEL_MG;
1071         }
1072 }
1073
1074 /* Starting with Haswell, different DDI ports can work in FDI mode for
1075  * connection to the PCH-located connectors. For this, it is necessary to train
1076  * both the DDI port and PCH receiver for the desired DDI buffer settings.
1077  *
1078  * The recommended port to work in FDI mode is DDI E, which we use here. Also,
1079  * please note that when FDI mode is active on DDI E, it shares 2 lines with
1080  * DDI A (which is used for eDP)
1081  */
1082
1083 void hsw_fdi_link_train(struct intel_crtc *crtc,
1084                         const struct intel_crtc_state *crtc_state)
1085 {
1086         struct drm_device *dev = crtc->base.dev;
1087         struct drm_i915_private *dev_priv = to_i915(dev);
1088         struct intel_encoder *encoder;
1089         u32 temp, i, rx_ctl_val, ddi_pll_sel;
1090
1091         for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
1092                 WARN_ON(encoder->type != INTEL_OUTPUT_ANALOG);
1093                 intel_prepare_dp_ddi_buffers(encoder, crtc_state);
1094         }
1095
1096         /* Set the FDI_RX_MISC pwrdn lanes and the 2 workarounds listed at the
1097          * mode set "sequence for CRT port" document:
1098          * - TP1 to TP2 time with the default value
1099          * - FDI delay to 90h
1100          *
1101          * WaFDIAutoLinkSetTimingOverrride:hsw
1102          */
1103         I915_WRITE(FDI_RX_MISC(PIPE_A), FDI_RX_PWRDN_LANE1_VAL(2) |
1104                                   FDI_RX_PWRDN_LANE0_VAL(2) |
1105                                   FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
1106
1107         /* Enable the PCH Receiver FDI PLL */
1108         rx_ctl_val = dev_priv->fdi_rx_config | FDI_RX_ENHANCE_FRAME_ENABLE |
1109                      FDI_RX_PLL_ENABLE |
1110                      FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
1111         I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
1112         POSTING_READ(FDI_RX_CTL(PIPE_A));
1113         udelay(220);
1114
1115         /* Switch from Rawclk to PCDclk */
1116         rx_ctl_val |= FDI_PCDCLK;
1117         I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
1118
1119         /* Configure Port Clock Select */
1120         ddi_pll_sel = hsw_pll_to_ddi_pll_sel(crtc_state->shared_dpll);
1121         I915_WRITE(PORT_CLK_SEL(PORT_E), ddi_pll_sel);
1122         WARN_ON(ddi_pll_sel != PORT_CLK_SEL_SPLL);
1123
1124         /* Start the training iterating through available voltages and emphasis,
1125          * testing each value twice. */
1126         for (i = 0; i < ARRAY_SIZE(hsw_ddi_translations_fdi) * 2; i++) {
1127                 /* Configure DP_TP_CTL with auto-training */
1128                 I915_WRITE(DP_TP_CTL(PORT_E),
1129                                         DP_TP_CTL_FDI_AUTOTRAIN |
1130                                         DP_TP_CTL_ENHANCED_FRAME_ENABLE |
1131                                         DP_TP_CTL_LINK_TRAIN_PAT1 |
1132                                         DP_TP_CTL_ENABLE);
1133
1134                 /* Configure and enable DDI_BUF_CTL for DDI E with next voltage.
1135                  * DDI E does not support port reversal, the functionality is
1136                  * achieved on the PCH side in FDI_RX_CTL, so no need to set the
1137                  * port reversal bit */
1138                 I915_WRITE(DDI_BUF_CTL(PORT_E),
1139                            DDI_BUF_CTL_ENABLE |
1140                            ((crtc_state->fdi_lanes - 1) << 1) |
1141                            DDI_BUF_TRANS_SELECT(i / 2));
1142                 POSTING_READ(DDI_BUF_CTL(PORT_E));
1143
1144                 udelay(600);
1145
1146                 /* Program PCH FDI Receiver TU */
1147                 I915_WRITE(FDI_RX_TUSIZE1(PIPE_A), TU_SIZE(64));
1148
1149                 /* Enable PCH FDI Receiver with auto-training */
1150                 rx_ctl_val |= FDI_RX_ENABLE | FDI_LINK_TRAIN_AUTO;
1151                 I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
1152                 POSTING_READ(FDI_RX_CTL(PIPE_A));
1153
1154                 /* Wait for FDI receiver lane calibration */
1155                 udelay(30);
1156
1157                 /* Unset FDI_RX_MISC pwrdn lanes */
1158                 temp = I915_READ(FDI_RX_MISC(PIPE_A));
1159                 temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
1160                 I915_WRITE(FDI_RX_MISC(PIPE_A), temp);
1161                 POSTING_READ(FDI_RX_MISC(PIPE_A));
1162
1163                 /* Wait for FDI auto training time */
1164                 udelay(5);
1165
1166                 temp = I915_READ(DP_TP_STATUS(PORT_E));
1167                 if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) {
1168                         DRM_DEBUG_KMS("FDI link training done on step %d\n", i);
1169                         break;
1170                 }
1171
1172                 /*
1173                  * Leave things enabled even if we failed to train FDI.
1174                  * Results in less fireworks from the state checker.
1175                  */
1176                 if (i == ARRAY_SIZE(hsw_ddi_translations_fdi) * 2 - 1) {
1177                         DRM_ERROR("FDI link training failed!\n");
1178                         break;
1179                 }
1180
1181                 rx_ctl_val &= ~FDI_RX_ENABLE;
1182                 I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
1183                 POSTING_READ(FDI_RX_CTL(PIPE_A));
1184
1185                 temp = I915_READ(DDI_BUF_CTL(PORT_E));
1186                 temp &= ~DDI_BUF_CTL_ENABLE;
1187                 I915_WRITE(DDI_BUF_CTL(PORT_E), temp);
1188                 POSTING_READ(DDI_BUF_CTL(PORT_E));
1189
1190                 /* Disable DP_TP_CTL and FDI_RX_CTL and retry */
1191                 temp = I915_READ(DP_TP_CTL(PORT_E));
1192                 temp &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
1193                 temp |= DP_TP_CTL_LINK_TRAIN_PAT1;
1194                 I915_WRITE(DP_TP_CTL(PORT_E), temp);
1195                 POSTING_READ(DP_TP_CTL(PORT_E));
1196
1197                 intel_wait_ddi_buf_idle(dev_priv, PORT_E);
1198
1199                 /* Reset FDI_RX_MISC pwrdn lanes */
1200                 temp = I915_READ(FDI_RX_MISC(PIPE_A));
1201                 temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
1202                 temp |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
1203                 I915_WRITE(FDI_RX_MISC(PIPE_A), temp);
1204                 POSTING_READ(FDI_RX_MISC(PIPE_A));
1205         }
1206
1207         /* Enable normal pixel sending for FDI */
1208         I915_WRITE(DP_TP_CTL(PORT_E),
1209                    DP_TP_CTL_FDI_AUTOTRAIN |
1210                    DP_TP_CTL_LINK_TRAIN_NORMAL |
1211                    DP_TP_CTL_ENHANCED_FRAME_ENABLE |
1212                    DP_TP_CTL_ENABLE);
1213 }
1214
1215 static void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder)
1216 {
1217         struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
1218         struct intel_digital_port *intel_dig_port =
1219                 enc_to_dig_port(&encoder->base);
1220
1221         intel_dp->DP = intel_dig_port->saved_port_bits |
1222                 DDI_BUF_CTL_ENABLE | DDI_BUF_TRANS_SELECT(0);
1223         intel_dp->DP |= DDI_PORT_WIDTH(intel_dp->lane_count);
1224 }
1225
1226 static struct intel_encoder *
1227 intel_ddi_get_crtc_encoder(struct intel_crtc *crtc)
1228 {
1229         struct drm_device *dev = crtc->base.dev;
1230         struct intel_encoder *encoder, *ret = NULL;
1231         int num_encoders = 0;
1232
1233         for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
1234                 ret = encoder;
1235                 num_encoders++;
1236         }
1237
1238         if (num_encoders != 1)
1239                 WARN(1, "%d encoders on crtc for pipe %c\n", num_encoders,
1240                      pipe_name(crtc->pipe));
1241
1242         BUG_ON(ret == NULL);
1243         return ret;
1244 }
1245
1246 /* Finds the only possible encoder associated with the given CRTC. */
1247 struct intel_encoder *
1248 intel_ddi_get_crtc_new_encoder(struct intel_crtc_state *crtc_state)
1249 {
1250         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
1251         struct intel_encoder *ret = NULL;
1252         struct drm_atomic_state *state;
1253         struct drm_connector *connector;
1254         struct drm_connector_state *connector_state;
1255         int num_encoders = 0;
1256         int i;
1257
1258         state = crtc_state->base.state;
1259
1260         for_each_new_connector_in_state(state, connector, connector_state, i) {
1261                 if (connector_state->crtc != crtc_state->base.crtc)
1262                         continue;
1263
1264                 ret = to_intel_encoder(connector_state->best_encoder);
1265                 num_encoders++;
1266         }
1267
1268         WARN(num_encoders != 1, "%d encoders on crtc for pipe %c\n", num_encoders,
1269              pipe_name(crtc->pipe));
1270
1271         BUG_ON(ret == NULL);
1272         return ret;
1273 }
1274
1275 #define LC_FREQ 2700
1276
1277 static int hsw_ddi_calc_wrpll_link(struct drm_i915_private *dev_priv,
1278                                    i915_reg_t reg)
1279 {
1280         int refclk = LC_FREQ;
1281         int n, p, r;
1282         u32 wrpll;
1283
1284         wrpll = I915_READ(reg);
1285         switch (wrpll & WRPLL_PLL_REF_MASK) {
1286         case WRPLL_PLL_SSC:
1287         case WRPLL_PLL_NON_SSC:
1288                 /*
1289                  * We could calculate spread here, but our checking
1290                  * code only cares about 5% accuracy, and spread is a max of
1291                  * 0.5% downspread.
1292                  */
1293                 refclk = 135;
1294                 break;
1295         case WRPLL_PLL_LCPLL:
1296                 refclk = LC_FREQ;
1297                 break;
1298         default:
1299                 WARN(1, "bad wrpll refclk\n");
1300                 return 0;
1301         }
1302
1303         r = wrpll & WRPLL_DIVIDER_REF_MASK;
1304         p = (wrpll & WRPLL_DIVIDER_POST_MASK) >> WRPLL_DIVIDER_POST_SHIFT;
1305         n = (wrpll & WRPLL_DIVIDER_FB_MASK) >> WRPLL_DIVIDER_FB_SHIFT;
1306
1307         /* Convert to KHz, p & r have a fixed point portion */
1308         return (refclk * n * 100) / (p * r);
1309 }
1310
1311 static int skl_calc_wrpll_link(struct drm_i915_private *dev_priv,
1312                                enum intel_dpll_id pll_id)
1313 {
1314         i915_reg_t cfgcr1_reg, cfgcr2_reg;
1315         uint32_t cfgcr1_val, cfgcr2_val;
1316         uint32_t p0, p1, p2, dco_freq;
1317
1318         cfgcr1_reg = DPLL_CFGCR1(pll_id);
1319         cfgcr2_reg = DPLL_CFGCR2(pll_id);
1320
1321         cfgcr1_val = I915_READ(cfgcr1_reg);
1322         cfgcr2_val = I915_READ(cfgcr2_reg);
1323
1324         p0 = cfgcr2_val & DPLL_CFGCR2_PDIV_MASK;
1325         p2 = cfgcr2_val & DPLL_CFGCR2_KDIV_MASK;
1326
1327         if (cfgcr2_val &  DPLL_CFGCR2_QDIV_MODE(1))
1328                 p1 = (cfgcr2_val & DPLL_CFGCR2_QDIV_RATIO_MASK) >> 8;
1329         else
1330                 p1 = 1;
1331
1332
1333         switch (p0) {
1334         case DPLL_CFGCR2_PDIV_1:
1335                 p0 = 1;
1336                 break;
1337         case DPLL_CFGCR2_PDIV_2:
1338                 p0 = 2;
1339                 break;
1340         case DPLL_CFGCR2_PDIV_3:
1341                 p0 = 3;
1342                 break;
1343         case DPLL_CFGCR2_PDIV_7:
1344                 p0 = 7;
1345                 break;
1346         }
1347
1348         switch (p2) {
1349         case DPLL_CFGCR2_KDIV_5:
1350                 p2 = 5;
1351                 break;
1352         case DPLL_CFGCR2_KDIV_2:
1353                 p2 = 2;
1354                 break;
1355         case DPLL_CFGCR2_KDIV_3:
1356                 p2 = 3;
1357                 break;
1358         case DPLL_CFGCR2_KDIV_1:
1359                 p2 = 1;
1360                 break;
1361         }
1362
1363         dco_freq = (cfgcr1_val & DPLL_CFGCR1_DCO_INTEGER_MASK) * 24 * 1000;
1364
1365         dco_freq += (((cfgcr1_val & DPLL_CFGCR1_DCO_FRACTION_MASK) >> 9) * 24 *
1366                 1000) / 0x8000;
1367
1368         return dco_freq / (p0 * p1 * p2 * 5);
1369 }
1370
1371 static int cnl_calc_wrpll_link(struct drm_i915_private *dev_priv,
1372                                enum intel_dpll_id pll_id)
1373 {
1374         uint32_t cfgcr0, cfgcr1;
1375         uint32_t p0, p1, p2, dco_freq, ref_clock;
1376
1377         cfgcr0 = I915_READ(CNL_DPLL_CFGCR0(pll_id));
1378         cfgcr1 = I915_READ(CNL_DPLL_CFGCR1(pll_id));
1379
1380         p0 = cfgcr1 & DPLL_CFGCR1_PDIV_MASK;
1381         p2 = cfgcr1 & DPLL_CFGCR1_KDIV_MASK;
1382
1383         if (cfgcr1 & DPLL_CFGCR1_QDIV_MODE(1))
1384                 p1 = (cfgcr1 & DPLL_CFGCR1_QDIV_RATIO_MASK) >>
1385                         DPLL_CFGCR1_QDIV_RATIO_SHIFT;
1386         else
1387                 p1 = 1;
1388
1389
1390         switch (p0) {
1391         case DPLL_CFGCR1_PDIV_2:
1392                 p0 = 2;
1393                 break;
1394         case DPLL_CFGCR1_PDIV_3:
1395                 p0 = 3;
1396                 break;
1397         case DPLL_CFGCR1_PDIV_5:
1398                 p0 = 5;
1399                 break;
1400         case DPLL_CFGCR1_PDIV_7:
1401                 p0 = 7;
1402                 break;
1403         }
1404
1405         switch (p2) {
1406         case DPLL_CFGCR1_KDIV_1:
1407                 p2 = 1;
1408                 break;
1409         case DPLL_CFGCR1_KDIV_2:
1410                 p2 = 2;
1411                 break;
1412         case DPLL_CFGCR1_KDIV_4:
1413                 p2 = 4;
1414                 break;
1415         }
1416
1417         ref_clock = dev_priv->cdclk.hw.ref;
1418
1419         dco_freq = (cfgcr0 & DPLL_CFGCR0_DCO_INTEGER_MASK) * ref_clock;
1420
1421         dco_freq += (((cfgcr0 & DPLL_CFGCR0_DCO_FRACTION_MASK) >>
1422                       DPLL_CFGCR0_DCO_FRACTION_SHIFT) * ref_clock) / 0x8000;
1423
1424         if (WARN_ON(p0 == 0 || p1 == 0 || p2 == 0))
1425                 return 0;
1426
1427         return dco_freq / (p0 * p1 * p2 * 5);
1428 }
1429
1430 static void ddi_dotclock_get(struct intel_crtc_state *pipe_config)
1431 {
1432         int dotclock;
1433
1434         if (pipe_config->has_pch_encoder)
1435                 dotclock = intel_dotclock_calculate(pipe_config->port_clock,
1436                                                     &pipe_config->fdi_m_n);
1437         else if (intel_crtc_has_dp_encoder(pipe_config))
1438                 dotclock = intel_dotclock_calculate(pipe_config->port_clock,
1439                                                     &pipe_config->dp_m_n);
1440         else if (pipe_config->has_hdmi_sink && pipe_config->pipe_bpp == 36)
1441                 dotclock = pipe_config->port_clock * 2 / 3;
1442         else
1443                 dotclock = pipe_config->port_clock;
1444
1445         if (pipe_config->ycbcr420)
1446                 dotclock *= 2;
1447
1448         if (pipe_config->pixel_multiplier)
1449                 dotclock /= pipe_config->pixel_multiplier;
1450
1451         pipe_config->base.adjusted_mode.crtc_clock = dotclock;
1452 }
1453
1454 static void cnl_ddi_clock_get(struct intel_encoder *encoder,
1455                               struct intel_crtc_state *pipe_config)
1456 {
1457         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1458         int link_clock = 0;
1459         uint32_t cfgcr0;
1460         enum intel_dpll_id pll_id;
1461
1462         pll_id = intel_get_shared_dpll_id(dev_priv, pipe_config->shared_dpll);
1463
1464         cfgcr0 = I915_READ(CNL_DPLL_CFGCR0(pll_id));
1465
1466         if (cfgcr0 & DPLL_CFGCR0_HDMI_MODE) {
1467                 link_clock = cnl_calc_wrpll_link(dev_priv, pll_id);
1468         } else {
1469                 link_clock = cfgcr0 & DPLL_CFGCR0_LINK_RATE_MASK;
1470
1471                 switch (link_clock) {
1472                 case DPLL_CFGCR0_LINK_RATE_810:
1473                         link_clock = 81000;
1474                         break;
1475                 case DPLL_CFGCR0_LINK_RATE_1080:
1476                         link_clock = 108000;
1477                         break;
1478                 case DPLL_CFGCR0_LINK_RATE_1350:
1479                         link_clock = 135000;
1480                         break;
1481                 case DPLL_CFGCR0_LINK_RATE_1620:
1482                         link_clock = 162000;
1483                         break;
1484                 case DPLL_CFGCR0_LINK_RATE_2160:
1485                         link_clock = 216000;
1486                         break;
1487                 case DPLL_CFGCR0_LINK_RATE_2700:
1488                         link_clock = 270000;
1489                         break;
1490                 case DPLL_CFGCR0_LINK_RATE_3240:
1491                         link_clock = 324000;
1492                         break;
1493                 case DPLL_CFGCR0_LINK_RATE_4050:
1494                         link_clock = 405000;
1495                         break;
1496                 default:
1497                         WARN(1, "Unsupported link rate\n");
1498                         break;
1499                 }
1500                 link_clock *= 2;
1501         }
1502
1503         pipe_config->port_clock = link_clock;
1504
1505         ddi_dotclock_get(pipe_config);
1506 }
1507
1508 static void skl_ddi_clock_get(struct intel_encoder *encoder,
1509                                 struct intel_crtc_state *pipe_config)
1510 {
1511         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1512         int link_clock = 0;
1513         uint32_t dpll_ctl1;
1514         enum intel_dpll_id pll_id;
1515
1516         pll_id = intel_get_shared_dpll_id(dev_priv, pipe_config->shared_dpll);
1517
1518         dpll_ctl1 = I915_READ(DPLL_CTRL1);
1519
1520         if (dpll_ctl1 & DPLL_CTRL1_HDMI_MODE(pll_id)) {
1521                 link_clock = skl_calc_wrpll_link(dev_priv, pll_id);
1522         } else {
1523                 link_clock = dpll_ctl1 & DPLL_CTRL1_LINK_RATE_MASK(pll_id);
1524                 link_clock >>= DPLL_CTRL1_LINK_RATE_SHIFT(pll_id);
1525
1526                 switch (link_clock) {
1527                 case DPLL_CTRL1_LINK_RATE_810:
1528                         link_clock = 81000;
1529                         break;
1530                 case DPLL_CTRL1_LINK_RATE_1080:
1531                         link_clock = 108000;
1532                         break;
1533                 case DPLL_CTRL1_LINK_RATE_1350:
1534                         link_clock = 135000;
1535                         break;
1536                 case DPLL_CTRL1_LINK_RATE_1620:
1537                         link_clock = 162000;
1538                         break;
1539                 case DPLL_CTRL1_LINK_RATE_2160:
1540                         link_clock = 216000;
1541                         break;
1542                 case DPLL_CTRL1_LINK_RATE_2700:
1543                         link_clock = 270000;
1544                         break;
1545                 default:
1546                         WARN(1, "Unsupported link rate\n");
1547                         break;
1548                 }
1549                 link_clock *= 2;
1550         }
1551
1552         pipe_config->port_clock = link_clock;
1553
1554         ddi_dotclock_get(pipe_config);
1555 }
1556
1557 static void hsw_ddi_clock_get(struct intel_encoder *encoder,
1558                               struct intel_crtc_state *pipe_config)
1559 {
1560         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1561         int link_clock = 0;
1562         u32 val, pll;
1563
1564         val = hsw_pll_to_ddi_pll_sel(pipe_config->shared_dpll);
1565         switch (val & PORT_CLK_SEL_MASK) {
1566         case PORT_CLK_SEL_LCPLL_810:
1567                 link_clock = 81000;
1568                 break;
1569         case PORT_CLK_SEL_LCPLL_1350:
1570                 link_clock = 135000;
1571                 break;
1572         case PORT_CLK_SEL_LCPLL_2700:
1573                 link_clock = 270000;
1574                 break;
1575         case PORT_CLK_SEL_WRPLL1:
1576                 link_clock = hsw_ddi_calc_wrpll_link(dev_priv, WRPLL_CTL(0));
1577                 break;
1578         case PORT_CLK_SEL_WRPLL2:
1579                 link_clock = hsw_ddi_calc_wrpll_link(dev_priv, WRPLL_CTL(1));
1580                 break;
1581         case PORT_CLK_SEL_SPLL:
1582                 pll = I915_READ(SPLL_CTL) & SPLL_PLL_FREQ_MASK;
1583                 if (pll == SPLL_PLL_FREQ_810MHz)
1584                         link_clock = 81000;
1585                 else if (pll == SPLL_PLL_FREQ_1350MHz)
1586                         link_clock = 135000;
1587                 else if (pll == SPLL_PLL_FREQ_2700MHz)
1588                         link_clock = 270000;
1589                 else {
1590                         WARN(1, "bad spll freq\n");
1591                         return;
1592                 }
1593                 break;
1594         default:
1595                 WARN(1, "bad port clock sel\n");
1596                 return;
1597         }
1598
1599         pipe_config->port_clock = link_clock * 2;
1600
1601         ddi_dotclock_get(pipe_config);
1602 }
1603
1604 static int bxt_calc_pll_link(struct intel_crtc_state *crtc_state)
1605 {
1606         struct intel_dpll_hw_state *state;
1607         struct dpll clock;
1608
1609         /* For DDI ports we always use a shared PLL. */
1610         if (WARN_ON(!crtc_state->shared_dpll))
1611                 return 0;
1612
1613         state = &crtc_state->dpll_hw_state;
1614
1615         clock.m1 = 2;
1616         clock.m2 = (state->pll0 & PORT_PLL_M2_MASK) << 22;
1617         if (state->pll3 & PORT_PLL_M2_FRAC_ENABLE)
1618                 clock.m2 |= state->pll2 & PORT_PLL_M2_FRAC_MASK;
1619         clock.n = (state->pll1 & PORT_PLL_N_MASK) >> PORT_PLL_N_SHIFT;
1620         clock.p1 = (state->ebb0 & PORT_PLL_P1_MASK) >> PORT_PLL_P1_SHIFT;
1621         clock.p2 = (state->ebb0 & PORT_PLL_P2_MASK) >> PORT_PLL_P2_SHIFT;
1622
1623         return chv_calc_dpll_params(100000, &clock);
1624 }
1625
1626 static void bxt_ddi_clock_get(struct intel_encoder *encoder,
1627                               struct intel_crtc_state *pipe_config)
1628 {
1629         pipe_config->port_clock = bxt_calc_pll_link(pipe_config);
1630
1631         ddi_dotclock_get(pipe_config);
1632 }
1633
1634 static void intel_ddi_clock_get(struct intel_encoder *encoder,
1635                                 struct intel_crtc_state *pipe_config)
1636 {
1637         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1638
1639         if (INTEL_GEN(dev_priv) <= 8)
1640                 hsw_ddi_clock_get(encoder, pipe_config);
1641         else if (IS_GEN9_BC(dev_priv))
1642                 skl_ddi_clock_get(encoder, pipe_config);
1643         else if (IS_GEN9_LP(dev_priv))
1644                 bxt_ddi_clock_get(encoder, pipe_config);
1645         else if (IS_CANNONLAKE(dev_priv))
1646                 cnl_ddi_clock_get(encoder, pipe_config);
1647 }
1648
1649 void intel_ddi_set_pipe_settings(const struct intel_crtc_state *crtc_state)
1650 {
1651         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
1652         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1653         enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
1654         u32 temp;
1655
1656         if (!intel_crtc_has_dp_encoder(crtc_state))
1657                 return;
1658
1659         WARN_ON(transcoder_is_dsi(cpu_transcoder));
1660
1661         temp = TRANS_MSA_SYNC_CLK;
1662         switch (crtc_state->pipe_bpp) {
1663         case 18:
1664                 temp |= TRANS_MSA_6_BPC;
1665                 break;
1666         case 24:
1667                 temp |= TRANS_MSA_8_BPC;
1668                 break;
1669         case 30:
1670                 temp |= TRANS_MSA_10_BPC;
1671                 break;
1672         case 36:
1673                 temp |= TRANS_MSA_12_BPC;
1674                 break;
1675         default:
1676                 MISSING_CASE(crtc_state->pipe_bpp);
1677                 break;
1678         }
1679
1680         I915_WRITE(TRANS_MSA_MISC(cpu_transcoder), temp);
1681 }
1682
1683 void intel_ddi_set_vc_payload_alloc(const struct intel_crtc_state *crtc_state,
1684                                     bool state)
1685 {
1686         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
1687         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1688         enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
1689         uint32_t temp;
1690
1691         temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1692         if (state == true)
1693                 temp |= TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
1694         else
1695                 temp &= ~TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
1696         I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
1697 }
1698
1699 void intel_ddi_enable_transcoder_func(const struct intel_crtc_state *crtc_state)
1700 {
1701         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
1702         struct intel_encoder *encoder = intel_ddi_get_crtc_encoder(crtc);
1703         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1704         enum pipe pipe = crtc->pipe;
1705         enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
1706         enum port port = encoder->port;
1707         uint32_t temp;
1708
1709         /* Enable TRANS_DDI_FUNC_CTL for the pipe to work in HDMI mode */
1710         temp = TRANS_DDI_FUNC_ENABLE;
1711         temp |= TRANS_DDI_SELECT_PORT(port);
1712
1713         switch (crtc_state->pipe_bpp) {
1714         case 18:
1715                 temp |= TRANS_DDI_BPC_6;
1716                 break;
1717         case 24:
1718                 temp |= TRANS_DDI_BPC_8;
1719                 break;
1720         case 30:
1721                 temp |= TRANS_DDI_BPC_10;
1722                 break;
1723         case 36:
1724                 temp |= TRANS_DDI_BPC_12;
1725                 break;
1726         default:
1727                 BUG();
1728         }
1729
1730         if (crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC)
1731                 temp |= TRANS_DDI_PVSYNC;
1732         if (crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC)
1733                 temp |= TRANS_DDI_PHSYNC;
1734
1735         if (cpu_transcoder == TRANSCODER_EDP) {
1736                 switch (pipe) {
1737                 case PIPE_A:
1738                         /* On Haswell, can only use the always-on power well for
1739                          * eDP when not using the panel fitter, and when not
1740                          * using motion blur mitigation (which we don't
1741                          * support). */
1742                         if (IS_HASWELL(dev_priv) &&
1743                             (crtc_state->pch_pfit.enabled ||
1744                              crtc_state->pch_pfit.force_thru))
1745                                 temp |= TRANS_DDI_EDP_INPUT_A_ONOFF;
1746                         else
1747                                 temp |= TRANS_DDI_EDP_INPUT_A_ON;
1748                         break;
1749                 case PIPE_B:
1750                         temp |= TRANS_DDI_EDP_INPUT_B_ONOFF;
1751                         break;
1752                 case PIPE_C:
1753                         temp |= TRANS_DDI_EDP_INPUT_C_ONOFF;
1754                         break;
1755                 default:
1756                         BUG();
1757                         break;
1758                 }
1759         }
1760
1761         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
1762                 if (crtc_state->has_hdmi_sink)
1763                         temp |= TRANS_DDI_MODE_SELECT_HDMI;
1764                 else
1765                         temp |= TRANS_DDI_MODE_SELECT_DVI;
1766
1767                 if (crtc_state->hdmi_scrambling)
1768                         temp |= TRANS_DDI_HDMI_SCRAMBLING_MASK;
1769                 if (crtc_state->hdmi_high_tmds_clock_ratio)
1770                         temp |= TRANS_DDI_HIGH_TMDS_CHAR_RATE;
1771         } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
1772                 temp |= TRANS_DDI_MODE_SELECT_FDI;
1773                 temp |= (crtc_state->fdi_lanes - 1) << 1;
1774         } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) {
1775                 temp |= TRANS_DDI_MODE_SELECT_DP_MST;
1776                 temp |= DDI_PORT_WIDTH(crtc_state->lane_count);
1777         } else {
1778                 temp |= TRANS_DDI_MODE_SELECT_DP_SST;
1779                 temp |= DDI_PORT_WIDTH(crtc_state->lane_count);
1780         }
1781
1782         I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
1783 }
1784
1785 void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
1786                                        enum transcoder cpu_transcoder)
1787 {
1788         i915_reg_t reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
1789         uint32_t val = I915_READ(reg);
1790
1791         val &= ~(TRANS_DDI_FUNC_ENABLE | TRANS_DDI_PORT_MASK | TRANS_DDI_DP_VC_PAYLOAD_ALLOC);
1792         val |= TRANS_DDI_PORT_NONE;
1793         I915_WRITE(reg, val);
1794 }
1795
1796 int intel_ddi_toggle_hdcp_signalling(struct intel_encoder *intel_encoder,
1797                                      bool enable)
1798 {
1799         struct drm_device *dev = intel_encoder->base.dev;
1800         struct drm_i915_private *dev_priv = to_i915(dev);
1801         enum pipe pipe = 0;
1802         int ret = 0;
1803         uint32_t tmp;
1804
1805         if (WARN_ON(!intel_display_power_get_if_enabled(dev_priv,
1806                                                 intel_encoder->power_domain)))
1807                 return -ENXIO;
1808
1809         if (WARN_ON(!intel_encoder->get_hw_state(intel_encoder, &pipe))) {
1810                 ret = -EIO;
1811                 goto out;
1812         }
1813
1814         tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe));
1815         if (enable)
1816                 tmp |= TRANS_DDI_HDCP_SIGNALLING;
1817         else
1818                 tmp &= ~TRANS_DDI_HDCP_SIGNALLING;
1819         I915_WRITE(TRANS_DDI_FUNC_CTL(pipe), tmp);
1820 out:
1821         intel_display_power_put(dev_priv, intel_encoder->power_domain);
1822         return ret;
1823 }
1824
1825 bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector)
1826 {
1827         struct drm_device *dev = intel_connector->base.dev;
1828         struct drm_i915_private *dev_priv = to_i915(dev);
1829         struct intel_encoder *encoder = intel_connector->encoder;
1830         int type = intel_connector->base.connector_type;
1831         enum port port = encoder->port;
1832         enum pipe pipe = 0;
1833         enum transcoder cpu_transcoder;
1834         uint32_t tmp;
1835         bool ret;
1836
1837         if (!intel_display_power_get_if_enabled(dev_priv,
1838                                                 encoder->power_domain))
1839                 return false;
1840
1841         if (!encoder->get_hw_state(encoder, &pipe)) {
1842                 ret = false;
1843                 goto out;
1844         }
1845
1846         if (port == PORT_A)
1847                 cpu_transcoder = TRANSCODER_EDP;
1848         else
1849                 cpu_transcoder = (enum transcoder) pipe;
1850
1851         tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1852
1853         switch (tmp & TRANS_DDI_MODE_SELECT_MASK) {
1854         case TRANS_DDI_MODE_SELECT_HDMI:
1855         case TRANS_DDI_MODE_SELECT_DVI:
1856                 ret = type == DRM_MODE_CONNECTOR_HDMIA;
1857                 break;
1858
1859         case TRANS_DDI_MODE_SELECT_DP_SST:
1860                 ret = type == DRM_MODE_CONNECTOR_eDP ||
1861                       type == DRM_MODE_CONNECTOR_DisplayPort;
1862                 break;
1863
1864         case TRANS_DDI_MODE_SELECT_DP_MST:
1865                 /* if the transcoder is in MST state then
1866                  * connector isn't connected */
1867                 ret = false;
1868                 break;
1869
1870         case TRANS_DDI_MODE_SELECT_FDI:
1871                 ret = type == DRM_MODE_CONNECTOR_VGA;
1872                 break;
1873
1874         default:
1875                 ret = false;
1876                 break;
1877         }
1878
1879 out:
1880         intel_display_power_put(dev_priv, encoder->power_domain);
1881
1882         return ret;
1883 }
1884
1885 bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
1886                             enum pipe *pipe)
1887 {
1888         struct drm_device *dev = encoder->base.dev;
1889         struct drm_i915_private *dev_priv = to_i915(dev);
1890         enum port port = encoder->port;
1891         enum pipe p;
1892         u32 tmp;
1893         bool ret;
1894
1895         if (!intel_display_power_get_if_enabled(dev_priv,
1896                                                 encoder->power_domain))
1897                 return false;
1898
1899         ret = false;
1900
1901         tmp = I915_READ(DDI_BUF_CTL(port));
1902
1903         if (!(tmp & DDI_BUF_CTL_ENABLE))
1904                 goto out;
1905
1906         if (port == PORT_A) {
1907                 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
1908
1909                 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
1910                 case TRANS_DDI_EDP_INPUT_A_ON:
1911                 case TRANS_DDI_EDP_INPUT_A_ONOFF:
1912                         *pipe = PIPE_A;
1913                         break;
1914                 case TRANS_DDI_EDP_INPUT_B_ONOFF:
1915                         *pipe = PIPE_B;
1916                         break;
1917                 case TRANS_DDI_EDP_INPUT_C_ONOFF:
1918                         *pipe = PIPE_C;
1919                         break;
1920                 }
1921
1922                 ret = true;
1923
1924                 goto out;
1925         }
1926
1927         for_each_pipe(dev_priv, p) {
1928                 enum transcoder cpu_transcoder = (enum transcoder) p;
1929
1930                 tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1931
1932                 if ((tmp & TRANS_DDI_PORT_MASK) == TRANS_DDI_SELECT_PORT(port)) {
1933                         if ((tmp & TRANS_DDI_MODE_SELECT_MASK) ==
1934                             TRANS_DDI_MODE_SELECT_DP_MST)
1935                                 goto out;
1936
1937                         *pipe = p;
1938                         ret = true;
1939
1940                         goto out;
1941                 }
1942         }
1943
1944         DRM_DEBUG_KMS("No pipe for ddi port %c found\n", port_name(port));
1945
1946 out:
1947         if (ret && IS_GEN9_LP(dev_priv)) {
1948                 tmp = I915_READ(BXT_PHY_CTL(port));
1949                 if ((tmp & (BXT_PHY_CMNLANE_POWERDOWN_ACK |
1950                             BXT_PHY_LANE_POWERDOWN_ACK |
1951                             BXT_PHY_LANE_ENABLED)) != BXT_PHY_LANE_ENABLED)
1952                         DRM_ERROR("Port %c enabled but PHY powered down? "
1953                                   "(PHY_CTL %08x)\n", port_name(port), tmp);
1954         }
1955
1956         intel_display_power_put(dev_priv, encoder->power_domain);
1957
1958         return ret;
1959 }
1960
1961 static u64 intel_ddi_get_power_domains(struct intel_encoder *encoder)
1962 {
1963         struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
1964         enum pipe pipe;
1965
1966         if (intel_ddi_get_hw_state(encoder, &pipe))
1967                 return BIT_ULL(dig_port->ddi_io_power_domain);
1968
1969         return 0;
1970 }
1971
1972 void intel_ddi_enable_pipe_clock(const struct intel_crtc_state *crtc_state)
1973 {
1974         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
1975         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1976         struct intel_encoder *encoder = intel_ddi_get_crtc_encoder(crtc);
1977         enum port port = encoder->port;
1978         enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
1979
1980         if (cpu_transcoder != TRANSCODER_EDP)
1981                 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
1982                            TRANS_CLK_SEL_PORT(port));
1983 }
1984
1985 void intel_ddi_disable_pipe_clock(const struct intel_crtc_state *crtc_state)
1986 {
1987         struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
1988         enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
1989
1990         if (cpu_transcoder != TRANSCODER_EDP)
1991                 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
1992                            TRANS_CLK_SEL_DISABLED);
1993 }
1994
1995 static void _skl_ddi_set_iboost(struct drm_i915_private *dev_priv,
1996                                 enum port port, uint8_t iboost)
1997 {
1998         u32 tmp;
1999
2000         tmp = I915_READ(DISPIO_CR_TX_BMU_CR0);
2001         tmp &= ~(BALANCE_LEG_MASK(port) | BALANCE_LEG_DISABLE(port));
2002         if (iboost)
2003                 tmp |= iboost << BALANCE_LEG_SHIFT(port);
2004         else
2005                 tmp |= BALANCE_LEG_DISABLE(port);
2006         I915_WRITE(DISPIO_CR_TX_BMU_CR0, tmp);
2007 }
2008
2009 static void skl_ddi_set_iboost(struct intel_encoder *encoder,
2010                                int level, enum intel_output_type type)
2011 {
2012         struct intel_digital_port *intel_dig_port = enc_to_dig_port(&encoder->base);
2013         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2014         enum port port = encoder->port;
2015         uint8_t iboost;
2016
2017         if (type == INTEL_OUTPUT_HDMI)
2018                 iboost = dev_priv->vbt.ddi_port_info[port].hdmi_boost_level;
2019         else
2020                 iboost = dev_priv->vbt.ddi_port_info[port].dp_boost_level;
2021
2022         if (iboost == 0) {
2023                 const struct ddi_buf_trans *ddi_translations;
2024                 int n_entries;
2025
2026                 if (type == INTEL_OUTPUT_HDMI)
2027                         ddi_translations = intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries);
2028                 else if (type == INTEL_OUTPUT_EDP)
2029                         ddi_translations = intel_ddi_get_buf_trans_edp(dev_priv, port, &n_entries);
2030                 else
2031                         ddi_translations = intel_ddi_get_buf_trans_dp(dev_priv, port, &n_entries);
2032
2033                 if (WARN_ON_ONCE(!ddi_translations))
2034                         return;
2035                 if (WARN_ON_ONCE(level >= n_entries))
2036                         level = n_entries - 1;
2037
2038                 iboost = ddi_translations[level].i_boost;
2039         }
2040
2041         /* Make sure that the requested I_boost is valid */
2042         if (iboost && iboost != 0x1 && iboost != 0x3 && iboost != 0x7) {
2043                 DRM_ERROR("Invalid I_boost value %u\n", iboost);
2044                 return;
2045         }
2046
2047         _skl_ddi_set_iboost(dev_priv, port, iboost);
2048
2049         if (port == PORT_A && intel_dig_port->max_lanes == 4)
2050                 _skl_ddi_set_iboost(dev_priv, PORT_E, iboost);
2051 }
2052
2053 static void bxt_ddi_vswing_sequence(struct intel_encoder *encoder,
2054                                     int level, enum intel_output_type type)
2055 {
2056         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2057         const struct bxt_ddi_buf_trans *ddi_translations;
2058         enum port port = encoder->port;
2059         int n_entries;
2060
2061         if (type == INTEL_OUTPUT_HDMI)
2062                 ddi_translations = bxt_get_buf_trans_hdmi(dev_priv, &n_entries);
2063         else if (type == INTEL_OUTPUT_EDP)
2064                 ddi_translations = bxt_get_buf_trans_edp(dev_priv, &n_entries);
2065         else
2066                 ddi_translations = bxt_get_buf_trans_dp(dev_priv, &n_entries);
2067
2068         if (WARN_ON_ONCE(!ddi_translations))
2069                 return;
2070         if (WARN_ON_ONCE(level >= n_entries))
2071                 level = n_entries - 1;
2072
2073         bxt_ddi_phy_set_signal_level(dev_priv, port,
2074                                      ddi_translations[level].margin,
2075                                      ddi_translations[level].scale,
2076                                      ddi_translations[level].enable,
2077                                      ddi_translations[level].deemphasis);
2078 }
2079
2080 u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder)
2081 {
2082         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2083         enum port port = encoder->port;
2084         int n_entries;
2085
2086         if (IS_ICELAKE(dev_priv)) {
2087                 if (port == PORT_A || port == PORT_B)
2088                         icl_get_combo_buf_trans(dev_priv, port, encoder->type,
2089                                                 &n_entries);
2090                 else
2091                         n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations);
2092         } else if (IS_CANNONLAKE(dev_priv)) {
2093                 if (encoder->type == INTEL_OUTPUT_EDP)
2094                         cnl_get_buf_trans_edp(dev_priv, &n_entries);
2095                 else
2096                         cnl_get_buf_trans_dp(dev_priv, &n_entries);
2097         } else if (IS_GEN9_LP(dev_priv)) {
2098                 if (encoder->type == INTEL_OUTPUT_EDP)
2099                         bxt_get_buf_trans_edp(dev_priv, &n_entries);
2100                 else
2101                         bxt_get_buf_trans_dp(dev_priv, &n_entries);
2102         } else {
2103                 if (encoder->type == INTEL_OUTPUT_EDP)
2104                         intel_ddi_get_buf_trans_edp(dev_priv, port, &n_entries);
2105                 else
2106                         intel_ddi_get_buf_trans_dp(dev_priv, port, &n_entries);
2107         }
2108
2109         if (WARN_ON(n_entries < 1))
2110                 n_entries = 1;
2111         if (WARN_ON(n_entries > ARRAY_SIZE(index_to_dp_signal_levels)))
2112                 n_entries = ARRAY_SIZE(index_to_dp_signal_levels);
2113
2114         return index_to_dp_signal_levels[n_entries - 1] &
2115                 DP_TRAIN_VOLTAGE_SWING_MASK;
2116 }
2117
2118 static void cnl_ddi_vswing_program(struct intel_encoder *encoder,
2119                                    int level, enum intel_output_type type)
2120 {
2121         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2122         const struct cnl_ddi_buf_trans *ddi_translations;
2123         enum port port = encoder->port;
2124         int n_entries, ln;
2125         u32 val;
2126
2127         if (type == INTEL_OUTPUT_HDMI)
2128                 ddi_translations = cnl_get_buf_trans_hdmi(dev_priv, &n_entries);
2129         else if (type == INTEL_OUTPUT_EDP)
2130                 ddi_translations = cnl_get_buf_trans_edp(dev_priv, &n_entries);
2131         else
2132                 ddi_translations = cnl_get_buf_trans_dp(dev_priv, &n_entries);
2133
2134         if (WARN_ON_ONCE(!ddi_translations))
2135                 return;
2136         if (WARN_ON_ONCE(level >= n_entries))
2137                 level = n_entries - 1;
2138
2139         /* Set PORT_TX_DW5 Scaling Mode Sel to 010b. */
2140         val = I915_READ(CNL_PORT_TX_DW5_LN0(port));
2141         val &= ~SCALING_MODE_SEL_MASK;
2142         val |= SCALING_MODE_SEL(2);
2143         I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val);
2144
2145         /* Program PORT_TX_DW2 */
2146         val = I915_READ(CNL_PORT_TX_DW2_LN0(port));
2147         val &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
2148                  RCOMP_SCALAR_MASK);
2149         val |= SWING_SEL_UPPER(ddi_translations[level].dw2_swing_sel);
2150         val |= SWING_SEL_LOWER(ddi_translations[level].dw2_swing_sel);
2151         /* Rcomp scalar is fixed as 0x98 for every table entry */
2152         val |= RCOMP_SCALAR(0x98);
2153         I915_WRITE(CNL_PORT_TX_DW2_GRP(port), val);
2154
2155         /* Program PORT_TX_DW4 */
2156         /* We cannot write to GRP. It would overrite individual loadgen */
2157         for (ln = 0; ln < 4; ln++) {
2158                 val = I915_READ(CNL_PORT_TX_DW4_LN(port, ln));
2159                 val &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
2160                          CURSOR_COEFF_MASK);
2161                 val |= POST_CURSOR_1(ddi_translations[level].dw4_post_cursor_1);
2162                 val |= POST_CURSOR_2(ddi_translations[level].dw4_post_cursor_2);
2163                 val |= CURSOR_COEFF(ddi_translations[level].dw4_cursor_coeff);
2164                 I915_WRITE(CNL_PORT_TX_DW4_LN(port, ln), val);
2165         }
2166
2167         /* Program PORT_TX_DW5 */
2168         /* All DW5 values are fixed for every table entry */
2169         val = I915_READ(CNL_PORT_TX_DW5_LN0(port));
2170         val &= ~RTERM_SELECT_MASK;
2171         val |= RTERM_SELECT(6);
2172         val |= TAP3_DISABLE;
2173         I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val);
2174
2175         /* Program PORT_TX_DW7 */
2176         val = I915_READ(CNL_PORT_TX_DW7_LN0(port));
2177         val &= ~N_SCALAR_MASK;
2178         val |= N_SCALAR(ddi_translations[level].dw7_n_scalar);
2179         I915_WRITE(CNL_PORT_TX_DW7_GRP(port), val);
2180 }
2181
2182 static void cnl_ddi_vswing_sequence(struct intel_encoder *encoder,
2183                                     int level, enum intel_output_type type)
2184 {
2185         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2186         enum port port = encoder->port;
2187         int width, rate, ln;
2188         u32 val;
2189
2190         if (type == INTEL_OUTPUT_HDMI) {
2191                 width = 4;
2192                 rate = 0; /* Rate is always < than 6GHz for HDMI */
2193         } else {
2194                 struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
2195
2196                 width = intel_dp->lane_count;
2197                 rate = intel_dp->link_rate;
2198         }
2199
2200         /*
2201          * 1. If port type is eDP or DP,
2202          * set PORT_PCS_DW1 cmnkeeper_enable to 1b,
2203          * else clear to 0b.
2204          */
2205         val = I915_READ(CNL_PORT_PCS_DW1_LN0(port));
2206         if (type != INTEL_OUTPUT_HDMI)
2207                 val |= COMMON_KEEPER_EN;
2208         else
2209                 val &= ~COMMON_KEEPER_EN;
2210         I915_WRITE(CNL_PORT_PCS_DW1_GRP(port), val);
2211
2212         /* 2. Program loadgen select */
2213         /*
2214          * Program PORT_TX_DW4_LN depending on Bit rate and used lanes
2215          * <= 6 GHz and 4 lanes (LN0=0, LN1=1, LN2=1, LN3=1)
2216          * <= 6 GHz and 1,2 lanes (LN0=0, LN1=1, LN2=1, LN3=0)
2217          * > 6 GHz (LN0=0, LN1=0, LN2=0, LN3=0)
2218          */
2219         for (ln = 0; ln <= 3; ln++) {
2220                 val = I915_READ(CNL_PORT_TX_DW4_LN(port, ln));
2221                 val &= ~LOADGEN_SELECT;
2222
2223                 if ((rate <= 600000 && width == 4 && ln >= 1)  ||
2224                     (rate <= 600000 && width < 4 && (ln == 1 || ln == 2))) {
2225                         val |= LOADGEN_SELECT;
2226                 }
2227                 I915_WRITE(CNL_PORT_TX_DW4_LN(port, ln), val);
2228         }
2229
2230         /* 3. Set PORT_CL_DW5 SUS Clock Config to 11b */
2231         val = I915_READ(CNL_PORT_CL1CM_DW5);
2232         val |= SUS_CLOCK_CONFIG;
2233         I915_WRITE(CNL_PORT_CL1CM_DW5, val);
2234
2235         /* 4. Clear training enable to change swing values */
2236         val = I915_READ(CNL_PORT_TX_DW5_LN0(port));
2237         val &= ~TX_TRAINING_EN;
2238         I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val);
2239
2240         /* 5. Program swing and de-emphasis */
2241         cnl_ddi_vswing_program(encoder, level, type);
2242
2243         /* 6. Set training enable to trigger update */
2244         val = I915_READ(CNL_PORT_TX_DW5_LN0(port));
2245         val |= TX_TRAINING_EN;
2246         I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val);
2247 }
2248
2249 static void icl_ddi_combo_vswing_program(struct drm_i915_private *dev_priv,
2250                                          u32 level, enum port port, int type)
2251 {
2252         const struct icl_combo_phy_ddi_buf_trans *ddi_translations = NULL;
2253         u32 n_entries, val;
2254         int ln;
2255
2256         ddi_translations = icl_get_combo_buf_trans(dev_priv, port, type,
2257                                                    &n_entries);
2258         if (!ddi_translations)
2259                 return;
2260
2261         if (level >= n_entries) {
2262                 DRM_DEBUG_KMS("DDI translation not found for level %d. Using %d instead.", level, n_entries - 1);
2263                 level = n_entries - 1;
2264         }
2265
2266         /* Set PORT_TX_DW5 Rterm Sel to 110b. */
2267         val = I915_READ(ICL_PORT_TX_DW5_LN0(port));
2268         val &= ~RTERM_SELECT_MASK;
2269         val |= RTERM_SELECT(0x6);
2270         I915_WRITE(ICL_PORT_TX_DW5_GRP(port), val);
2271
2272         /* Program PORT_TX_DW5 */
2273         val = I915_READ(ICL_PORT_TX_DW5_LN0(port));
2274         /* Set DisableTap2 and DisableTap3 if MIPI DSI
2275          * Clear DisableTap2 and DisableTap3 for all other Ports
2276          */
2277         if (type == INTEL_OUTPUT_DSI) {
2278                 val |= TAP2_DISABLE;
2279                 val |= TAP3_DISABLE;
2280         } else {
2281                 val &= ~TAP2_DISABLE;
2282                 val &= ~TAP3_DISABLE;
2283         }
2284         I915_WRITE(ICL_PORT_TX_DW5_GRP(port), val);
2285
2286         /* Program PORT_TX_DW2 */
2287         val = I915_READ(ICL_PORT_TX_DW2_LN0(port));
2288         val &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
2289                  RCOMP_SCALAR_MASK);
2290         val |= SWING_SEL_UPPER(ddi_translations[level].dw2_swing_select);
2291         val |= SWING_SEL_LOWER(ddi_translations[level].dw2_swing_select);
2292         /* Program Rcomp scalar for every table entry */
2293         val |= RCOMP_SCALAR(ddi_translations[level].dw2_swing_scalar);
2294         I915_WRITE(ICL_PORT_TX_DW2_GRP(port), val);
2295
2296         /* Program PORT_TX_DW4 */
2297         /* We cannot write to GRP. It would overwrite individual loadgen. */
2298         for (ln = 0; ln <= 3; ln++) {
2299                 val = I915_READ(ICL_PORT_TX_DW4_LN(port, ln));
2300                 val &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
2301                          CURSOR_COEFF_MASK);
2302                 val |= ddi_translations[level].dw4_scaling;
2303                 I915_WRITE(ICL_PORT_TX_DW4_LN(port, ln), val);
2304         }
2305 }
2306
2307 static void icl_combo_phy_ddi_vswing_sequence(struct intel_encoder *encoder,
2308                                               u32 level,
2309                                               enum intel_output_type type)
2310 {
2311         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2312         enum port port = encoder->port;
2313         int width = 0;
2314         int rate = 0;
2315         u32 val;
2316         int ln = 0;
2317
2318         if (type == INTEL_OUTPUT_HDMI) {
2319                 width = 4;
2320                 /* Rate is always < than 6GHz for HDMI */
2321         } else {
2322                 struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
2323
2324                 width = intel_dp->lane_count;
2325                 rate = intel_dp->link_rate;
2326         }
2327
2328         /*
2329          * 1. If port type is eDP or DP,
2330          * set PORT_PCS_DW1 cmnkeeper_enable to 1b,
2331          * else clear to 0b.
2332          */
2333         val = I915_READ(ICL_PORT_PCS_DW1_LN0(port));
2334         if (type == INTEL_OUTPUT_HDMI)
2335                 val &= ~COMMON_KEEPER_EN;
2336         else
2337                 val |= COMMON_KEEPER_EN;
2338         I915_WRITE(ICL_PORT_PCS_DW1_GRP(port), val);
2339
2340         /* 2. Program loadgen select */
2341         /*
2342          * Program PORT_TX_DW4_LN depending on Bit rate and used lanes
2343          * <= 6 GHz and 4 lanes (LN0=0, LN1=1, LN2=1, LN3=1)
2344          * <= 6 GHz and 1,2 lanes (LN0=0, LN1=1, LN2=1, LN3=0)
2345          * > 6 GHz (LN0=0, LN1=0, LN2=0, LN3=0)
2346          */
2347         for (ln = 0; ln <= 3; ln++) {
2348                 val = I915_READ(ICL_PORT_TX_DW4_LN(port, ln));
2349                 val &= ~LOADGEN_SELECT;
2350
2351                 if ((rate <= 600000 && width == 4 && ln >= 1) ||
2352                     (rate <= 600000 && width < 4 && (ln == 1 || ln == 2))) {
2353                         val |= LOADGEN_SELECT;
2354                 }
2355                 I915_WRITE(ICL_PORT_TX_DW4_LN(port, ln), val);
2356         }
2357
2358         /* 3. Set PORT_CL_DW5 SUS Clock Config to 11b */
2359         val = I915_READ(ICL_PORT_CL_DW5(port));
2360         val |= SUS_CLOCK_CONFIG;
2361         I915_WRITE(ICL_PORT_CL_DW5(port), val);
2362
2363         /* 4. Clear training enable to change swing values */
2364         val = I915_READ(ICL_PORT_TX_DW5_LN0(port));
2365         val &= ~TX_TRAINING_EN;
2366         I915_WRITE(ICL_PORT_TX_DW5_GRP(port), val);
2367
2368         /* 5. Program swing and de-emphasis */
2369         icl_ddi_combo_vswing_program(dev_priv, level, port, type);
2370
2371         /* 6. Set training enable to trigger update */
2372         val = I915_READ(ICL_PORT_TX_DW5_LN0(port));
2373         val |= TX_TRAINING_EN;
2374         I915_WRITE(ICL_PORT_TX_DW5_GRP(port), val);
2375 }
2376
2377 static void icl_ddi_vswing_sequence(struct intel_encoder *encoder, u32 level,
2378                                     enum intel_output_type type)
2379 {
2380         enum port port = encoder->port;
2381
2382         if (port == PORT_A || port == PORT_B)
2383                 icl_combo_phy_ddi_vswing_sequence(encoder, level, type);
2384         else
2385                 /* Not Implemented Yet */
2386                 WARN_ON(1);
2387 }
2388
2389 static uint32_t translate_signal_level(int signal_levels)
2390 {
2391         int i;
2392
2393         for (i = 0; i < ARRAY_SIZE(index_to_dp_signal_levels); i++) {
2394                 if (index_to_dp_signal_levels[i] == signal_levels)
2395                         return i;
2396         }
2397
2398         WARN(1, "Unsupported voltage swing/pre-emphasis level: 0x%x\n",
2399              signal_levels);
2400
2401         return 0;
2402 }
2403
2404 static uint32_t intel_ddi_dp_level(struct intel_dp *intel_dp)
2405 {
2406         uint8_t train_set = intel_dp->train_set[0];
2407         int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
2408                                          DP_TRAIN_PRE_EMPHASIS_MASK);
2409
2410         return translate_signal_level(signal_levels);
2411 }
2412
2413 u32 bxt_signal_levels(struct intel_dp *intel_dp)
2414 {
2415         struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
2416         struct drm_i915_private *dev_priv = to_i915(dport->base.base.dev);
2417         struct intel_encoder *encoder = &dport->base;
2418         int level = intel_ddi_dp_level(intel_dp);
2419
2420         if (IS_ICELAKE(dev_priv))
2421                 icl_ddi_vswing_sequence(encoder, level, encoder->type);
2422         else if (IS_CANNONLAKE(dev_priv))
2423                 cnl_ddi_vswing_sequence(encoder, level, encoder->type);
2424         else
2425                 bxt_ddi_vswing_sequence(encoder, level, encoder->type);
2426
2427         return 0;
2428 }
2429
2430 uint32_t ddi_signal_levels(struct intel_dp *intel_dp)
2431 {
2432         struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
2433         struct drm_i915_private *dev_priv = to_i915(dport->base.base.dev);
2434         struct intel_encoder *encoder = &dport->base;
2435         int level = intel_ddi_dp_level(intel_dp);
2436
2437         if (IS_GEN9_BC(dev_priv))
2438                 skl_ddi_set_iboost(encoder, level, encoder->type);
2439
2440         return DDI_BUF_TRANS_SELECT(level);
2441 }
2442
2443 void icl_map_plls_to_ports(struct drm_crtc *crtc,
2444                            struct intel_crtc_state *crtc_state,
2445                            struct drm_atomic_state *old_state)
2446 {
2447         struct intel_shared_dpll *pll = crtc_state->shared_dpll;
2448         struct drm_i915_private *dev_priv = to_i915(crtc->dev);
2449         struct drm_connector_state *conn_state;
2450         struct drm_connector *conn;
2451         int i;
2452
2453         for_each_new_connector_in_state(old_state, conn, conn_state, i) {
2454                 struct intel_encoder *encoder =
2455                         to_intel_encoder(conn_state->best_encoder);
2456                 enum port port = encoder->port;
2457                 uint32_t val;
2458
2459                 if (conn_state->crtc != crtc)
2460                         continue;
2461
2462                 mutex_lock(&dev_priv->dpll_lock);
2463
2464                 val = I915_READ(DPCLKA_CFGCR0_ICL);
2465                 WARN_ON((val & DPCLKA_CFGCR0_DDI_CLK_OFF(port)) == 0);
2466
2467                 if (port == PORT_A || port == PORT_B) {
2468                         val &= ~DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port);
2469                         val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port);
2470                         I915_WRITE(DPCLKA_CFGCR0_ICL, val);
2471                         POSTING_READ(DPCLKA_CFGCR0_ICL);
2472                 }
2473
2474                 val &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port);
2475                 I915_WRITE(DPCLKA_CFGCR0_ICL, val);
2476
2477                 mutex_unlock(&dev_priv->dpll_lock);
2478         }
2479 }
2480
2481 void icl_unmap_plls_to_ports(struct drm_crtc *crtc,
2482                              struct intel_crtc_state *crtc_state,
2483                              struct drm_atomic_state *old_state)
2484 {
2485         struct drm_i915_private *dev_priv = to_i915(crtc->dev);
2486         struct drm_connector_state *old_conn_state;
2487         struct drm_connector *conn;
2488         int i;
2489
2490         for_each_old_connector_in_state(old_state, conn, old_conn_state, i) {
2491                 struct intel_encoder *encoder =
2492                         to_intel_encoder(old_conn_state->best_encoder);
2493                 enum port port = encoder->port;
2494
2495                 if (old_conn_state->crtc != crtc)
2496                         continue;
2497
2498                 mutex_lock(&dev_priv->dpll_lock);
2499                 I915_WRITE(DPCLKA_CFGCR0_ICL,
2500                            I915_READ(DPCLKA_CFGCR0_ICL) |
2501                            DPCLKA_CFGCR0_DDI_CLK_OFF(port));
2502                 mutex_unlock(&dev_priv->dpll_lock);
2503         }
2504 }
2505
2506 static void intel_ddi_clk_select(struct intel_encoder *encoder,
2507                                  const struct intel_shared_dpll *pll)
2508 {
2509         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2510         enum port port = encoder->port;
2511         uint32_t val;
2512
2513         if (WARN_ON(!pll))
2514                 return;
2515
2516         mutex_lock(&dev_priv->dpll_lock);
2517
2518         if (IS_ICELAKE(dev_priv)) {
2519                 if (port >= PORT_C)
2520                         I915_WRITE(DDI_CLK_SEL(port),
2521                                    icl_pll_to_ddi_pll_sel(encoder, pll));
2522         } else if (IS_CANNONLAKE(dev_priv)) {
2523                 /* Configure DPCLKA_CFGCR0 to map the DPLL to the DDI. */
2524                 val = I915_READ(DPCLKA_CFGCR0);
2525                 val &= ~DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port);
2526                 val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port);
2527                 I915_WRITE(DPCLKA_CFGCR0, val);
2528
2529                 /*
2530                  * Configure DPCLKA_CFGCR0 to turn on the clock for the DDI.
2531                  * This step and the step before must be done with separate
2532                  * register writes.
2533                  */
2534                 val = I915_READ(DPCLKA_CFGCR0);
2535                 val &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port);
2536                 I915_WRITE(DPCLKA_CFGCR0, val);
2537         } else if (IS_GEN9_BC(dev_priv)) {
2538                 /* DDI -> PLL mapping  */
2539                 val = I915_READ(DPLL_CTRL2);
2540
2541                 val &= ~(DPLL_CTRL2_DDI_CLK_OFF(port) |
2542                          DPLL_CTRL2_DDI_CLK_SEL_MASK(port));
2543                 val |= (DPLL_CTRL2_DDI_CLK_SEL(pll->info->id, port) |
2544                         DPLL_CTRL2_DDI_SEL_OVERRIDE(port));
2545
2546                 I915_WRITE(DPLL_CTRL2, val);
2547
2548         } else if (INTEL_GEN(dev_priv) < 9) {
2549                 I915_WRITE(PORT_CLK_SEL(port), hsw_pll_to_ddi_pll_sel(pll));
2550         }
2551
2552         mutex_unlock(&dev_priv->dpll_lock);
2553 }
2554
2555 static void intel_ddi_clk_disable(struct intel_encoder *encoder)
2556 {
2557         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2558         enum port port = encoder->port;
2559
2560         if (IS_ICELAKE(dev_priv)) {
2561                 if (port >= PORT_C)
2562                         I915_WRITE(DDI_CLK_SEL(port), DDI_CLK_SEL_NONE);
2563         } else if (IS_CANNONLAKE(dev_priv)) {
2564                 I915_WRITE(DPCLKA_CFGCR0, I915_READ(DPCLKA_CFGCR0) |
2565                            DPCLKA_CFGCR0_DDI_CLK_OFF(port));
2566         } else if (IS_GEN9_BC(dev_priv)) {
2567                 I915_WRITE(DPLL_CTRL2, I915_READ(DPLL_CTRL2) |
2568                            DPLL_CTRL2_DDI_CLK_OFF(port));
2569         } else if (INTEL_GEN(dev_priv) < 9) {
2570                 I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE);
2571         }
2572 }
2573
2574 static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
2575                                     const struct intel_crtc_state *crtc_state,
2576                                     const struct drm_connector_state *conn_state)
2577 {
2578         struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
2579         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2580         enum port port = encoder->port;
2581         struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
2582         bool is_mst = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST);
2583         int level = intel_ddi_dp_level(intel_dp);
2584
2585         WARN_ON(is_mst && (port == PORT_A || port == PORT_E));
2586
2587         intel_dp_set_link_params(intel_dp, crtc_state->port_clock,
2588                                  crtc_state->lane_count, is_mst);
2589
2590         intel_edp_panel_on(intel_dp);
2591
2592         intel_ddi_clk_select(encoder, crtc_state->shared_dpll);
2593
2594         intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain);
2595
2596         if (IS_ICELAKE(dev_priv))
2597                 icl_ddi_vswing_sequence(encoder, level, encoder->type);
2598         else if (IS_CANNONLAKE(dev_priv))
2599                 cnl_ddi_vswing_sequence(encoder, level, encoder->type);
2600         else if (IS_GEN9_LP(dev_priv))
2601                 bxt_ddi_vswing_sequence(encoder, level, encoder->type);
2602         else
2603                 intel_prepare_dp_ddi_buffers(encoder, crtc_state);
2604
2605         intel_ddi_init_dp_buf_reg(encoder);
2606         if (!is_mst)
2607                 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
2608         intel_dp_start_link_train(intel_dp);
2609         if (port != PORT_A || INTEL_GEN(dev_priv) >= 9)
2610                 intel_dp_stop_link_train(intel_dp);
2611 }
2612
2613 static void intel_ddi_pre_enable_hdmi(struct intel_encoder *encoder,
2614                                       const struct intel_crtc_state *crtc_state,
2615                                       const struct drm_connector_state *conn_state)
2616 {
2617         struct intel_digital_port *intel_dig_port = enc_to_dig_port(&encoder->base);
2618         struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
2619         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2620         enum port port = encoder->port;
2621         int level = intel_ddi_hdmi_level(dev_priv, port);
2622         struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
2623
2624         intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
2625         intel_ddi_clk_select(encoder, crtc_state->shared_dpll);
2626
2627         intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain);
2628
2629         if (IS_ICELAKE(dev_priv))
2630                 icl_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI);
2631         else if (IS_CANNONLAKE(dev_priv))
2632                 cnl_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI);
2633         else if (IS_GEN9_LP(dev_priv))
2634                 bxt_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI);
2635         else
2636                 intel_prepare_hdmi_ddi_buffers(encoder, level);
2637
2638         if (IS_GEN9_BC(dev_priv))
2639                 skl_ddi_set_iboost(encoder, level, INTEL_OUTPUT_HDMI);
2640
2641         intel_dig_port->set_infoframes(&encoder->base,
2642                                        crtc_state->has_infoframe,
2643                                        crtc_state, conn_state);
2644 }
2645
2646 static void intel_ddi_pre_enable(struct intel_encoder *encoder,
2647                                  const struct intel_crtc_state *crtc_state,
2648                                  const struct drm_connector_state *conn_state)
2649 {
2650         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
2651         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
2652         enum pipe pipe = crtc->pipe;
2653
2654         /*
2655          * When called from DP MST code:
2656          * - conn_state will be NULL
2657          * - encoder will be the main encoder (ie. mst->primary)
2658          * - the main connector associated with this port
2659          *   won't be active or linked to a crtc
2660          * - crtc_state will be the state of the first stream to
2661          *   be activated on this port, and it may not be the same
2662          *   stream that will be deactivated last, but each stream
2663          *   should have a state that is identical when it comes to
2664          *   the DP link parameteres
2665          */
2666
2667         WARN_ON(crtc_state->has_pch_encoder);
2668
2669         intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
2670
2671         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
2672                 intel_ddi_pre_enable_hdmi(encoder, crtc_state, conn_state);
2673         else
2674                 intel_ddi_pre_enable_dp(encoder, crtc_state, conn_state);
2675 }
2676
2677 static void intel_disable_ddi_buf(struct intel_encoder *encoder)
2678 {
2679         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2680         enum port port = encoder->port;
2681         bool wait = false;
2682         u32 val;
2683
2684         val = I915_READ(DDI_BUF_CTL(port));
2685         if (val & DDI_BUF_CTL_ENABLE) {
2686                 val &= ~DDI_BUF_CTL_ENABLE;
2687                 I915_WRITE(DDI_BUF_CTL(port), val);
2688                 wait = true;
2689         }
2690
2691         val = I915_READ(DP_TP_CTL(port));
2692         val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
2693         val |= DP_TP_CTL_LINK_TRAIN_PAT1;
2694         I915_WRITE(DP_TP_CTL(port), val);
2695
2696         if (wait)
2697                 intel_wait_ddi_buf_idle(dev_priv, port);
2698 }
2699
2700 static void intel_ddi_post_disable_dp(struct intel_encoder *encoder,
2701                                       const struct intel_crtc_state *old_crtc_state,
2702                                       const struct drm_connector_state *old_conn_state)
2703 {
2704         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2705         struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
2706         struct intel_dp *intel_dp = &dig_port->dp;
2707         bool is_mst = intel_crtc_has_type(old_crtc_state,
2708                                           INTEL_OUTPUT_DP_MST);
2709
2710         /*
2711          * Power down sink before disabling the port, otherwise we end
2712          * up getting interrupts from the sink on detecting link loss.
2713          */
2714         if (!is_mst)
2715                 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
2716
2717         intel_disable_ddi_buf(encoder);
2718
2719         intel_edp_panel_vdd_on(intel_dp);
2720         intel_edp_panel_off(intel_dp);
2721
2722         intel_display_power_put(dev_priv, dig_port->ddi_io_power_domain);
2723
2724         intel_ddi_clk_disable(encoder);
2725 }
2726
2727 static void intel_ddi_post_disable_hdmi(struct intel_encoder *encoder,
2728                                         const struct intel_crtc_state *old_crtc_state,
2729                                         const struct drm_connector_state *old_conn_state)
2730 {
2731         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2732         struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
2733         struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
2734
2735         intel_disable_ddi_buf(encoder);
2736
2737         dig_port->set_infoframes(&encoder->base, false,
2738                                  old_crtc_state, old_conn_state);
2739
2740         intel_display_power_put(dev_priv, dig_port->ddi_io_power_domain);
2741
2742         intel_ddi_clk_disable(encoder);
2743
2744         intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
2745 }
2746
2747 static void intel_ddi_post_disable(struct intel_encoder *encoder,
2748                                    const struct intel_crtc_state *old_crtc_state,
2749                                    const struct drm_connector_state *old_conn_state)
2750 {
2751         /*
2752          * When called from DP MST code:
2753          * - old_conn_state will be NULL
2754          * - encoder will be the main encoder (ie. mst->primary)
2755          * - the main connector associated with this port
2756          *   won't be active or linked to a crtc
2757          * - old_crtc_state will be the state of the last stream to
2758          *   be deactivated on this port, and it may not be the same
2759          *   stream that was activated last, but each stream
2760          *   should have a state that is identical when it comes to
2761          *   the DP link parameteres
2762          */
2763
2764         if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI))
2765                 intel_ddi_post_disable_hdmi(encoder,
2766                                             old_crtc_state, old_conn_state);
2767         else
2768                 intel_ddi_post_disable_dp(encoder,
2769                                           old_crtc_state, old_conn_state);
2770 }
2771
2772 void intel_ddi_fdi_post_disable(struct intel_encoder *encoder,
2773                                 const struct intel_crtc_state *old_crtc_state,
2774                                 const struct drm_connector_state *old_conn_state)
2775 {
2776         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2777         uint32_t val;
2778
2779         /*
2780          * Bspec lists this as both step 13 (before DDI_BUF_CTL disable)
2781          * and step 18 (after clearing PORT_CLK_SEL). Based on a BUN,
2782          * step 13 is the correct place for it. Step 18 is where it was
2783          * originally before the BUN.
2784          */
2785         val = I915_READ(FDI_RX_CTL(PIPE_A));
2786         val &= ~FDI_RX_ENABLE;
2787         I915_WRITE(FDI_RX_CTL(PIPE_A), val);
2788
2789         intel_disable_ddi_buf(encoder);
2790         intel_ddi_clk_disable(encoder);
2791
2792         val = I915_READ(FDI_RX_MISC(PIPE_A));
2793         val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
2794         val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
2795         I915_WRITE(FDI_RX_MISC(PIPE_A), val);
2796
2797         val = I915_READ(FDI_RX_CTL(PIPE_A));
2798         val &= ~FDI_PCDCLK;
2799         I915_WRITE(FDI_RX_CTL(PIPE_A), val);
2800
2801         val = I915_READ(FDI_RX_CTL(PIPE_A));
2802         val &= ~FDI_RX_PLL_ENABLE;
2803         I915_WRITE(FDI_RX_CTL(PIPE_A), val);
2804 }
2805
2806 static void intel_enable_ddi_dp(struct intel_encoder *encoder,
2807                                 const struct intel_crtc_state *crtc_state,
2808                                 const struct drm_connector_state *conn_state)
2809 {
2810         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2811         struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
2812         enum port port = encoder->port;
2813
2814         if (port == PORT_A && INTEL_GEN(dev_priv) < 9)
2815                 intel_dp_stop_link_train(intel_dp);
2816
2817         intel_edp_backlight_on(crtc_state, conn_state);
2818         intel_psr_enable(intel_dp, crtc_state);
2819         intel_edp_drrs_enable(intel_dp, crtc_state);
2820
2821         if (crtc_state->has_audio)
2822                 intel_audio_codec_enable(encoder, crtc_state, conn_state);
2823 }
2824
2825 static void intel_enable_ddi_hdmi(struct intel_encoder *encoder,
2826                                   const struct intel_crtc_state *crtc_state,
2827                                   const struct drm_connector_state *conn_state)
2828 {
2829         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2830         struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
2831         struct drm_connector *connector = conn_state->connector;
2832         enum port port = encoder->port;
2833
2834         if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
2835                                                crtc_state->hdmi_high_tmds_clock_ratio,
2836                                                crtc_state->hdmi_scrambling))
2837                 DRM_ERROR("[CONNECTOR:%d:%s] Failed to configure sink scrambling/TMDS bit clock ratio\n",
2838                           connector->base.id, connector->name);
2839
2840         /* Display WA #1143: skl,kbl,cfl */
2841         if (IS_GEN9_BC(dev_priv)) {
2842                 /*
2843                  * For some reason these chicken bits have been
2844                  * stuffed into a transcoder register, event though
2845                  * the bits affect a specific DDI port rather than
2846                  * a specific transcoder.
2847                  */
2848                 static const enum transcoder port_to_transcoder[] = {
2849                         [PORT_A] = TRANSCODER_EDP,
2850                         [PORT_B] = TRANSCODER_A,
2851                         [PORT_C] = TRANSCODER_B,
2852                         [PORT_D] = TRANSCODER_C,
2853                         [PORT_E] = TRANSCODER_A,
2854                 };
2855                 enum transcoder transcoder = port_to_transcoder[port];
2856                 u32 val;
2857
2858                 val = I915_READ(CHICKEN_TRANS(transcoder));
2859
2860                 if (port == PORT_E)
2861                         val |= DDIE_TRAINING_OVERRIDE_ENABLE |
2862                                 DDIE_TRAINING_OVERRIDE_VALUE;
2863                 else
2864                         val |= DDI_TRAINING_OVERRIDE_ENABLE |
2865                                 DDI_TRAINING_OVERRIDE_VALUE;
2866
2867                 I915_WRITE(CHICKEN_TRANS(transcoder), val);
2868                 POSTING_READ(CHICKEN_TRANS(transcoder));
2869
2870                 udelay(1);
2871
2872                 if (port == PORT_E)
2873                         val &= ~(DDIE_TRAINING_OVERRIDE_ENABLE |
2874                                  DDIE_TRAINING_OVERRIDE_VALUE);
2875                 else
2876                         val &= ~(DDI_TRAINING_OVERRIDE_ENABLE |
2877                                  DDI_TRAINING_OVERRIDE_VALUE);
2878
2879                 I915_WRITE(CHICKEN_TRANS(transcoder), val);
2880         }
2881
2882         /* In HDMI/DVI mode, the port width, and swing/emphasis values
2883          * are ignored so nothing special needs to be done besides
2884          * enabling the port.
2885          */
2886         I915_WRITE(DDI_BUF_CTL(port),
2887                    dig_port->saved_port_bits | DDI_BUF_CTL_ENABLE);
2888
2889         if (crtc_state->has_audio)
2890                 intel_audio_codec_enable(encoder, crtc_state, conn_state);
2891 }
2892
2893 static void intel_enable_ddi(struct intel_encoder *encoder,
2894                              const struct intel_crtc_state *crtc_state,
2895                              const struct drm_connector_state *conn_state)
2896 {
2897         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
2898                 intel_enable_ddi_hdmi(encoder, crtc_state, conn_state);
2899         else
2900                 intel_enable_ddi_dp(encoder, crtc_state, conn_state);
2901
2902         /* Enable hdcp if it's desired */
2903         if (conn_state->content_protection ==
2904             DRM_MODE_CONTENT_PROTECTION_DESIRED)
2905                 intel_hdcp_enable(to_intel_connector(conn_state->connector));
2906 }
2907
2908 static void intel_disable_ddi_dp(struct intel_encoder *encoder,
2909                                  const struct intel_crtc_state *old_crtc_state,
2910                                  const struct drm_connector_state *old_conn_state)
2911 {
2912         struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
2913
2914         intel_dp->link_trained = false;
2915
2916         if (old_crtc_state->has_audio)
2917                 intel_audio_codec_disable(encoder,
2918                                           old_crtc_state, old_conn_state);
2919
2920         intel_edp_drrs_disable(intel_dp, old_crtc_state);
2921         intel_psr_disable(intel_dp, old_crtc_state);
2922         intel_edp_backlight_off(old_conn_state);
2923 }
2924
2925 static void intel_disable_ddi_hdmi(struct intel_encoder *encoder,
2926                                    const struct intel_crtc_state *old_crtc_state,
2927                                    const struct drm_connector_state *old_conn_state)
2928 {
2929         struct drm_connector *connector = old_conn_state->connector;
2930
2931         if (old_crtc_state->has_audio)
2932                 intel_audio_codec_disable(encoder,
2933                                           old_crtc_state, old_conn_state);
2934
2935         if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
2936                                                false, false))
2937                 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Failed to reset sink scrambling/TMDS bit clock ratio\n",
2938                               connector->base.id, connector->name);
2939 }
2940
2941 static void intel_disable_ddi(struct intel_encoder *encoder,
2942                               const struct intel_crtc_state *old_crtc_state,
2943                               const struct drm_connector_state *old_conn_state)
2944 {
2945         intel_hdcp_disable(to_intel_connector(old_conn_state->connector));
2946
2947         if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI))
2948                 intel_disable_ddi_hdmi(encoder, old_crtc_state, old_conn_state);
2949         else
2950                 intel_disable_ddi_dp(encoder, old_crtc_state, old_conn_state);
2951 }
2952
2953 static void bxt_ddi_pre_pll_enable(struct intel_encoder *encoder,
2954                                    const struct intel_crtc_state *pipe_config,
2955                                    const struct drm_connector_state *conn_state)
2956 {
2957         uint8_t mask = pipe_config->lane_lat_optim_mask;
2958
2959         bxt_ddi_phy_set_lane_optim_mask(encoder, mask);
2960 }
2961
2962 void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp)
2963 {
2964         struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
2965         struct drm_i915_private *dev_priv =
2966                 to_i915(intel_dig_port->base.base.dev);
2967         enum port port = intel_dig_port->base.port;
2968         uint32_t val;
2969         bool wait = false;
2970
2971         if (I915_READ(DP_TP_CTL(port)) & DP_TP_CTL_ENABLE) {
2972                 val = I915_READ(DDI_BUF_CTL(port));
2973                 if (val & DDI_BUF_CTL_ENABLE) {
2974                         val &= ~DDI_BUF_CTL_ENABLE;
2975                         I915_WRITE(DDI_BUF_CTL(port), val);
2976                         wait = true;
2977                 }
2978
2979                 val = I915_READ(DP_TP_CTL(port));
2980                 val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
2981                 val |= DP_TP_CTL_LINK_TRAIN_PAT1;
2982                 I915_WRITE(DP_TP_CTL(port), val);
2983                 POSTING_READ(DP_TP_CTL(port));
2984
2985                 if (wait)
2986                         intel_wait_ddi_buf_idle(dev_priv, port);
2987         }
2988
2989         val = DP_TP_CTL_ENABLE |
2990               DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE;
2991         if (intel_dp->link_mst)
2992                 val |= DP_TP_CTL_MODE_MST;
2993         else {
2994                 val |= DP_TP_CTL_MODE_SST;
2995                 if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
2996                         val |= DP_TP_CTL_ENHANCED_FRAME_ENABLE;
2997         }
2998         I915_WRITE(DP_TP_CTL(port), val);
2999         POSTING_READ(DP_TP_CTL(port));
3000
3001         intel_dp->DP |= DDI_BUF_CTL_ENABLE;
3002         I915_WRITE(DDI_BUF_CTL(port), intel_dp->DP);
3003         POSTING_READ(DDI_BUF_CTL(port));
3004
3005         udelay(600);
3006 }
3007
3008 static bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
3009                                        enum transcoder cpu_transcoder)
3010 {
3011         if (cpu_transcoder == TRANSCODER_EDP)
3012                 return false;
3013
3014         if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO))
3015                 return false;
3016
3017         return I915_READ(HSW_AUD_PIN_ELD_CP_VLD) &
3018                 AUDIO_OUTPUT_ENABLE(cpu_transcoder);
3019 }
3020
3021 void intel_ddi_compute_min_voltage_level(struct drm_i915_private *dev_priv,
3022                                          struct intel_crtc_state *crtc_state)
3023 {
3024         if (IS_CANNONLAKE(dev_priv) && crtc_state->port_clock > 594000)
3025                 crtc_state->min_voltage_level = 2;
3026 }
3027
3028 void intel_ddi_get_config(struct intel_encoder *encoder,
3029                           struct intel_crtc_state *pipe_config)
3030 {
3031         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
3032         struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc);
3033         enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
3034         struct intel_digital_port *intel_dig_port;
3035         u32 temp, flags = 0;
3036
3037         /* XXX: DSI transcoder paranoia */
3038         if (WARN_ON(transcoder_is_dsi(cpu_transcoder)))
3039                 return;
3040
3041         temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
3042         if (temp & TRANS_DDI_PHSYNC)
3043                 flags |= DRM_MODE_FLAG_PHSYNC;
3044         else
3045                 flags |= DRM_MODE_FLAG_NHSYNC;
3046         if (temp & TRANS_DDI_PVSYNC)
3047                 flags |= DRM_MODE_FLAG_PVSYNC;
3048         else
3049                 flags |= DRM_MODE_FLAG_NVSYNC;
3050
3051         pipe_config->base.adjusted_mode.flags |= flags;
3052
3053         switch (temp & TRANS_DDI_BPC_MASK) {
3054         case TRANS_DDI_BPC_6:
3055                 pipe_config->pipe_bpp = 18;
3056                 break;
3057         case TRANS_DDI_BPC_8:
3058                 pipe_config->pipe_bpp = 24;
3059                 break;
3060         case TRANS_DDI_BPC_10:
3061                 pipe_config->pipe_bpp = 30;
3062                 break;
3063         case TRANS_DDI_BPC_12:
3064                 pipe_config->pipe_bpp = 36;
3065                 break;
3066         default:
3067                 break;
3068         }
3069
3070         switch (temp & TRANS_DDI_MODE_SELECT_MASK) {
3071         case TRANS_DDI_MODE_SELECT_HDMI:
3072                 pipe_config->has_hdmi_sink = true;
3073                 intel_dig_port = enc_to_dig_port(&encoder->base);
3074
3075                 if (intel_dig_port->infoframe_enabled(&encoder->base, pipe_config))
3076                         pipe_config->has_infoframe = true;
3077
3078                 if ((temp & TRANS_DDI_HDMI_SCRAMBLING_MASK) ==
3079                         TRANS_DDI_HDMI_SCRAMBLING_MASK)
3080                         pipe_config->hdmi_scrambling = true;
3081                 if (temp & TRANS_DDI_HIGH_TMDS_CHAR_RATE)
3082                         pipe_config->hdmi_high_tmds_clock_ratio = true;
3083                 /* fall through */
3084         case TRANS_DDI_MODE_SELECT_DVI:
3085                 pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI);
3086                 pipe_config->lane_count = 4;
3087                 break;
3088         case TRANS_DDI_MODE_SELECT_FDI:
3089                 pipe_config->output_types |= BIT(INTEL_OUTPUT_ANALOG);
3090                 break;
3091         case TRANS_DDI_MODE_SELECT_DP_SST:
3092                 if (encoder->type == INTEL_OUTPUT_EDP)
3093                         pipe_config->output_types |= BIT(INTEL_OUTPUT_EDP);
3094                 else
3095                         pipe_config->output_types |= BIT(INTEL_OUTPUT_DP);
3096                 pipe_config->lane_count =
3097                         ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
3098                 intel_dp_get_m_n(intel_crtc, pipe_config);
3099                 break;
3100         case TRANS_DDI_MODE_SELECT_DP_MST:
3101                 pipe_config->output_types |= BIT(INTEL_OUTPUT_DP_MST);
3102                 pipe_config->lane_count =
3103                         ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
3104                 intel_dp_get_m_n(intel_crtc, pipe_config);
3105                 break;
3106         default:
3107                 break;
3108         }
3109
3110         pipe_config->has_audio =
3111                 intel_ddi_is_audio_enabled(dev_priv, cpu_transcoder);
3112
3113         if (encoder->type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp.bpp &&
3114             pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) {
3115                 /*
3116                  * This is a big fat ugly hack.
3117                  *
3118                  * Some machines in UEFI boot mode provide us a VBT that has 18
3119                  * bpp and 1.62 GHz link bandwidth for eDP, which for reasons
3120                  * unknown we fail to light up. Yet the same BIOS boots up with
3121                  * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as
3122                  * max, not what it tells us to use.
3123                  *
3124                  * Note: This will still be broken if the eDP panel is not lit
3125                  * up by the BIOS, and thus we can't get the mode at module
3126                  * load.
3127                  */
3128                 DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n",
3129                               pipe_config->pipe_bpp, dev_priv->vbt.edp.bpp);
3130                 dev_priv->vbt.edp.bpp = pipe_config->pipe_bpp;
3131         }
3132
3133         intel_ddi_clock_get(encoder, pipe_config);
3134
3135         if (IS_GEN9_LP(dev_priv))
3136                 pipe_config->lane_lat_optim_mask =
3137                         bxt_ddi_phy_get_lane_lat_optim_mask(encoder);
3138
3139         intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
3140 }
3141
3142 static enum intel_output_type
3143 intel_ddi_compute_output_type(struct intel_encoder *encoder,
3144                               struct intel_crtc_state *crtc_state,
3145                               struct drm_connector_state *conn_state)
3146 {
3147         switch (conn_state->connector->connector_type) {
3148         case DRM_MODE_CONNECTOR_HDMIA:
3149                 return INTEL_OUTPUT_HDMI;
3150         case DRM_MODE_CONNECTOR_eDP:
3151                 return INTEL_OUTPUT_EDP;
3152         case DRM_MODE_CONNECTOR_DisplayPort:
3153                 return INTEL_OUTPUT_DP;
3154         default:
3155                 MISSING_CASE(conn_state->connector->connector_type);
3156                 return INTEL_OUTPUT_UNUSED;
3157         }
3158 }
3159
3160 static bool intel_ddi_compute_config(struct intel_encoder *encoder,
3161                                      struct intel_crtc_state *pipe_config,
3162                                      struct drm_connector_state *conn_state)
3163 {
3164         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
3165         enum port port = encoder->port;
3166         int ret;
3167
3168         if (port == PORT_A)
3169                 pipe_config->cpu_transcoder = TRANSCODER_EDP;
3170
3171         if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI))
3172                 ret = intel_hdmi_compute_config(encoder, pipe_config, conn_state);
3173         else
3174                 ret = intel_dp_compute_config(encoder, pipe_config, conn_state);
3175
3176         if (IS_GEN9_LP(dev_priv) && ret)
3177                 pipe_config->lane_lat_optim_mask =
3178                         bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count);
3179
3180         intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
3181
3182         return ret;
3183
3184 }
3185
3186 static const struct drm_encoder_funcs intel_ddi_funcs = {
3187         .reset = intel_dp_encoder_reset,
3188         .destroy = intel_dp_encoder_destroy,
3189 };
3190
3191 static struct intel_connector *
3192 intel_ddi_init_dp_connector(struct intel_digital_port *intel_dig_port)
3193 {
3194         struct intel_connector *connector;
3195         enum port port = intel_dig_port->base.port;
3196
3197         connector = intel_connector_alloc();
3198         if (!connector)
3199                 return NULL;
3200
3201         intel_dig_port->dp.output_reg = DDI_BUF_CTL(port);
3202         if (!intel_dp_init_connector(intel_dig_port, connector)) {
3203                 kfree(connector);
3204                 return NULL;
3205         }
3206
3207         return connector;
3208 }
3209
3210 static int modeset_pipe(struct drm_crtc *crtc,
3211                         struct drm_modeset_acquire_ctx *ctx)
3212 {
3213         struct drm_atomic_state *state;
3214         struct drm_crtc_state *crtc_state;
3215         int ret;
3216
3217         state = drm_atomic_state_alloc(crtc->dev);
3218         if (!state)
3219                 return -ENOMEM;
3220
3221         state->acquire_ctx = ctx;
3222
3223         crtc_state = drm_atomic_get_crtc_state(state, crtc);
3224         if (IS_ERR(crtc_state)) {
3225                 ret = PTR_ERR(crtc_state);
3226                 goto out;
3227         }
3228
3229         crtc_state->mode_changed = true;
3230
3231         ret = drm_atomic_add_affected_connectors(state, crtc);
3232         if (ret)
3233                 goto out;
3234
3235         ret = drm_atomic_add_affected_planes(state, crtc);
3236         if (ret)
3237                 goto out;
3238
3239         ret = drm_atomic_commit(state);
3240         if (ret)
3241                 goto out;
3242
3243         return 0;
3244
3245  out:
3246         drm_atomic_state_put(state);
3247
3248         return ret;
3249 }
3250
3251 static int intel_hdmi_reset_link(struct intel_encoder *encoder,
3252                                  struct drm_modeset_acquire_ctx *ctx)
3253 {
3254         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
3255         struct intel_hdmi *hdmi = enc_to_intel_hdmi(&encoder->base);
3256         struct intel_connector *connector = hdmi->attached_connector;
3257         struct i2c_adapter *adapter =
3258                 intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
3259         struct drm_connector_state *conn_state;
3260         struct intel_crtc_state *crtc_state;
3261         struct intel_crtc *crtc;
3262         u8 config;
3263         int ret;
3264
3265         if (!connector || connector->base.status != connector_status_connected)
3266                 return 0;
3267
3268         ret = drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex,
3269                                ctx);
3270         if (ret)
3271                 return ret;
3272
3273         conn_state = connector->base.state;
3274
3275         crtc = to_intel_crtc(conn_state->crtc);
3276         if (!crtc)
3277                 return 0;
3278
3279         ret = drm_modeset_lock(&crtc->base.mutex, ctx);
3280         if (ret)
3281                 return ret;
3282
3283         crtc_state = to_intel_crtc_state(crtc->base.state);
3284
3285         WARN_ON(!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI));
3286
3287         if (!crtc_state->base.active)
3288                 return 0;
3289
3290         if (!crtc_state->hdmi_high_tmds_clock_ratio &&
3291             !crtc_state->hdmi_scrambling)
3292                 return 0;
3293
3294         if (conn_state->commit &&
3295             !try_wait_for_completion(&conn_state->commit->hw_done))
3296                 return 0;
3297
3298         ret = drm_scdc_readb(adapter, SCDC_TMDS_CONFIG, &config);
3299         if (ret < 0) {
3300                 DRM_ERROR("Failed to read TMDS config: %d\n", ret);
3301                 return 0;
3302         }
3303
3304         if (!!(config & SCDC_TMDS_BIT_CLOCK_RATIO_BY_40) ==
3305             crtc_state->hdmi_high_tmds_clock_ratio &&
3306             !!(config & SCDC_SCRAMBLING_ENABLE) ==
3307             crtc_state->hdmi_scrambling)
3308                 return 0;
3309
3310         /*
3311          * HDMI 2.0 says that one should not send scrambled data
3312          * prior to configuring the sink scrambling, and that
3313          * TMDS clock/data transmission should be suspended when
3314          * changing the TMDS clock rate in the sink. So let's
3315          * just do a full modeset here, even though some sinks
3316          * would be perfectly happy if were to just reconfigure
3317          * the SCDC settings on the fly.
3318          */
3319         return modeset_pipe(&crtc->base, ctx);
3320 }
3321
3322 static bool intel_ddi_hotplug(struct intel_encoder *encoder,
3323                               struct intel_connector *connector)
3324 {
3325         struct drm_modeset_acquire_ctx ctx;
3326         bool changed;
3327         int ret;
3328
3329         changed = intel_encoder_hotplug(encoder, connector);
3330
3331         drm_modeset_acquire_init(&ctx, 0);
3332
3333         for (;;) {
3334                 if (connector->base.connector_type == DRM_MODE_CONNECTOR_HDMIA)
3335                         ret = intel_hdmi_reset_link(encoder, &ctx);
3336                 else
3337                         ret = intel_dp_retrain_link(encoder, &ctx);
3338
3339                 if (ret == -EDEADLK) {
3340                         drm_modeset_backoff(&ctx);
3341                         continue;
3342                 }
3343
3344                 break;
3345         }
3346
3347         drm_modeset_drop_locks(&ctx);
3348         drm_modeset_acquire_fini(&ctx);
3349         WARN(ret, "Acquiring modeset locks failed with %i\n", ret);
3350
3351         return changed;
3352 }
3353
3354 static struct intel_connector *
3355 intel_ddi_init_hdmi_connector(struct intel_digital_port *intel_dig_port)
3356 {
3357         struct intel_connector *connector;
3358         enum port port = intel_dig_port->base.port;
3359
3360         connector = intel_connector_alloc();
3361         if (!connector)
3362                 return NULL;
3363
3364         intel_dig_port->hdmi.hdmi_reg = DDI_BUF_CTL(port);
3365         intel_hdmi_init_connector(intel_dig_port, connector);
3366
3367         return connector;
3368 }
3369
3370 static bool intel_ddi_a_force_4_lanes(struct intel_digital_port *dport)
3371 {
3372         struct drm_i915_private *dev_priv = to_i915(dport->base.base.dev);
3373
3374         if (dport->base.port != PORT_A)
3375                 return false;
3376
3377         if (dport->saved_port_bits & DDI_A_4_LANES)
3378                 return false;
3379
3380         /* Broxton/Geminilake: Bspec says that DDI_A_4_LANES is the only
3381          *                     supported configuration
3382          */
3383         if (IS_GEN9_LP(dev_priv))
3384                 return true;
3385
3386         /* Cannonlake: Most of SKUs don't support DDI_E, and the only
3387          *             one who does also have a full A/E split called
3388          *             DDI_F what makes DDI_E useless. However for this
3389          *             case let's trust VBT info.
3390          */
3391         if (IS_CANNONLAKE(dev_priv) &&
3392             !intel_bios_is_port_present(dev_priv, PORT_E))
3393                 return true;
3394
3395         return false;
3396 }
3397
3398 static int
3399 intel_ddi_max_lanes(struct intel_digital_port *intel_dport)
3400 {
3401         struct drm_i915_private *dev_priv = to_i915(intel_dport->base.base.dev);
3402         enum port port = intel_dport->base.port;
3403         int max_lanes = 4;
3404
3405         if (INTEL_GEN(dev_priv) >= 11)
3406                 return max_lanes;
3407
3408         if (port == PORT_A || port == PORT_E) {
3409                 if (I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES)
3410                         max_lanes = port == PORT_A ? 4 : 0;
3411                 else
3412                         /* Both A and E share 2 lanes */
3413                         max_lanes = 2;
3414         }
3415
3416         /*
3417          * Some BIOS might fail to set this bit on port A if eDP
3418          * wasn't lit up at boot.  Force this bit set when needed
3419          * so we use the proper lane count for our calculations.
3420          */
3421         if (intel_ddi_a_force_4_lanes(intel_dport)) {
3422                 DRM_DEBUG_KMS("Forcing DDI_A_4_LANES for port A\n");
3423                 intel_dport->saved_port_bits |= DDI_A_4_LANES;
3424                 max_lanes = 4;
3425         }
3426
3427         return max_lanes;
3428 }
3429
3430 void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
3431 {
3432         struct intel_digital_port *intel_dig_port;
3433         struct intel_encoder *intel_encoder;
3434         struct drm_encoder *encoder;
3435         bool init_hdmi, init_dp, init_lspcon = false;
3436
3437
3438         init_hdmi = (dev_priv->vbt.ddi_port_info[port].supports_dvi ||
3439                      dev_priv->vbt.ddi_port_info[port].supports_hdmi);
3440         init_dp = dev_priv->vbt.ddi_port_info[port].supports_dp;
3441
3442         if (intel_bios_is_lspcon_present(dev_priv, port)) {
3443                 /*
3444                  * Lspcon device needs to be driven with DP connector
3445                  * with special detection sequence. So make sure DP
3446                  * is initialized before lspcon.
3447                  */
3448                 init_dp = true;
3449                 init_lspcon = true;
3450                 init_hdmi = false;
3451                 DRM_DEBUG_KMS("VBT says port %c has lspcon\n", port_name(port));
3452         }
3453
3454         if (!init_dp && !init_hdmi) {
3455                 DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible, respect it\n",
3456                               port_name(port));
3457                 return;
3458         }
3459
3460         intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL);
3461         if (!intel_dig_port)
3462                 return;
3463
3464         intel_encoder = &intel_dig_port->base;
3465         encoder = &intel_encoder->base;
3466
3467         drm_encoder_init(&dev_priv->drm, encoder, &intel_ddi_funcs,
3468                          DRM_MODE_ENCODER_TMDS, "DDI %c", port_name(port));
3469
3470         intel_encoder->hotplug = intel_ddi_hotplug;
3471         intel_encoder->compute_output_type = intel_ddi_compute_output_type;
3472         intel_encoder->compute_config = intel_ddi_compute_config;
3473         intel_encoder->enable = intel_enable_ddi;
3474         if (IS_GEN9_LP(dev_priv))
3475                 intel_encoder->pre_pll_enable = bxt_ddi_pre_pll_enable;
3476         intel_encoder->pre_enable = intel_ddi_pre_enable;
3477         intel_encoder->disable = intel_disable_ddi;
3478         intel_encoder->post_disable = intel_ddi_post_disable;
3479         intel_encoder->get_hw_state = intel_ddi_get_hw_state;
3480         intel_encoder->get_config = intel_ddi_get_config;
3481         intel_encoder->suspend = intel_dp_encoder_suspend;
3482         intel_encoder->get_power_domains = intel_ddi_get_power_domains;
3483         intel_encoder->type = INTEL_OUTPUT_DDI;
3484         intel_encoder->power_domain = intel_port_to_power_domain(port);
3485         intel_encoder->port = port;
3486         intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
3487         intel_encoder->cloneable = 0;
3488
3489         if (INTEL_GEN(dev_priv) >= 11)
3490                 intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) &
3491                         DDI_BUF_PORT_REVERSAL;
3492         else
3493                 intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) &
3494                         (DDI_BUF_PORT_REVERSAL | DDI_A_4_LANES);
3495         intel_dig_port->dp.output_reg = INVALID_MMIO_REG;
3496         intel_dig_port->max_lanes = intel_ddi_max_lanes(intel_dig_port);
3497
3498         switch (port) {
3499         case PORT_A:
3500                 intel_dig_port->ddi_io_power_domain =
3501                         POWER_DOMAIN_PORT_DDI_A_IO;
3502                 break;
3503         case PORT_B:
3504                 intel_dig_port->ddi_io_power_domain =
3505                         POWER_DOMAIN_PORT_DDI_B_IO;
3506                 break;
3507         case PORT_C:
3508                 intel_dig_port->ddi_io_power_domain =
3509                         POWER_DOMAIN_PORT_DDI_C_IO;
3510                 break;
3511         case PORT_D:
3512                 intel_dig_port->ddi_io_power_domain =
3513                         POWER_DOMAIN_PORT_DDI_D_IO;
3514                 break;
3515         case PORT_E:
3516                 intel_dig_port->ddi_io_power_domain =
3517                         POWER_DOMAIN_PORT_DDI_E_IO;
3518                 break;
3519         case PORT_F:
3520                 intel_dig_port->ddi_io_power_domain =
3521                         POWER_DOMAIN_PORT_DDI_F_IO;
3522                 break;
3523         default:
3524                 MISSING_CASE(port);
3525         }
3526
3527         intel_infoframe_init(intel_dig_port);
3528
3529         if (init_dp) {
3530                 if (!intel_ddi_init_dp_connector(intel_dig_port))
3531                         goto err;
3532
3533                 intel_dig_port->hpd_pulse = intel_dp_hpd_pulse;
3534                 dev_priv->hotplug.irq_port[port] = intel_dig_port;
3535         }
3536
3537         /* In theory we don't need the encoder->type check, but leave it just in
3538          * case we have some really bad VBTs... */
3539         if (intel_encoder->type != INTEL_OUTPUT_EDP && init_hdmi) {
3540                 if (!intel_ddi_init_hdmi_connector(intel_dig_port))
3541                         goto err;
3542         }
3543
3544         if (init_lspcon) {
3545                 if (lspcon_init(intel_dig_port))
3546                         /* TODO: handle hdmi info frame part */
3547                         DRM_DEBUG_KMS("LSPCON init success on port %c\n",
3548                                 port_name(port));
3549                 else
3550                         /*
3551                          * LSPCON init faied, but DP init was success, so
3552                          * lets try to drive as DP++ port.
3553                          */
3554                         DRM_ERROR("LSPCON init failed on port %c\n",
3555                                 port_name(port));
3556         }
3557
3558         return;
3559
3560 err:
3561         drm_encoder_cleanup(encoder);
3562         kfree(intel_dig_port);
3563 }