1 /* 2 * Copyright © 2012 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 * 23 * Authors: 24 * Eugeni Dodonov <eugeni.dodonov@intel.com> 25 * 26 */ 27 28 #include <drm/drm_scdc_helper.h> 29 30 #include "i915_drv.h" 31 #include "intel_audio.h" 32 #include "intel_combo_phy.h" 33 #include "intel_connector.h" 34 #include "intel_ddi.h" 35 #include "intel_display_types.h" 36 #include "intel_dp.h" 37 #include "intel_dp_mst.h" 38 #include "intel_dp_link_training.h" 39 #include "intel_dpio_phy.h" 40 #include "intel_dsi.h" 41 #include "intel_fifo_underrun.h" 42 #include "intel_gmbus.h" 43 #include "intel_hdcp.h" 44 #include "intel_hdmi.h" 45 #include "intel_hotplug.h" 46 #include "intel_lspcon.h" 47 #include "intel_panel.h" 48 #include "intel_psr.h" 49 #include "intel_sprite.h" 50 #include "intel_tc.h" 51 #include "intel_vdsc.h" 52 53 struct ddi_buf_trans { 54 u32 trans1; /* balance leg enable, de-emph level */ 55 u32 trans2; /* vref sel, vswing */ 56 u8 i_boost; /* SKL: I_boost; valid: 0x0, 0x1, 0x3, 0x7 */ 57 }; 58 59 static const u8 index_to_dp_signal_levels[] = { 60 [0] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0, 61 [1] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1, 62 [2] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2, 63 [3] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3, 64 [4] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0, 65 [5] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1, 66 [6] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2, 67 [7] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0, 68 [8] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1, 69 [9] = DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0, 70 }; 71 72 /* HDMI/DVI modes ignore everything but the last 2 items. So we share 73 * them for both DP and FDI transports, allowing those ports to 74 * automatically adapt to HDMI connections as well 75 */ 76 static const struct ddi_buf_trans hsw_ddi_translations_dp[] = { 77 { 0x00FFFFFF, 0x0006000E, 0x0 }, 78 { 0x00D75FFF, 0x0005000A, 0x0 }, 79 { 0x00C30FFF, 0x00040006, 0x0 }, 80 { 0x80AAAFFF, 0x000B0000, 0x0 }, 81 { 0x00FFFFFF, 0x0005000A, 0x0 }, 82 { 0x00D75FFF, 0x000C0004, 0x0 }, 83 { 0x80C30FFF, 0x000B0000, 0x0 }, 84 { 0x00FFFFFF, 0x00040006, 0x0 }, 85 { 0x80D75FFF, 0x000B0000, 0x0 }, 86 }; 87 88 static const struct ddi_buf_trans hsw_ddi_translations_fdi[] = { 89 { 0x00FFFFFF, 0x0007000E, 0x0 }, 90 { 0x00D75FFF, 0x000F000A, 0x0 }, 91 { 0x00C30FFF, 0x00060006, 0x0 }, 92 { 0x00AAAFFF, 0x001E0000, 0x0 }, 93 { 0x00FFFFFF, 0x000F000A, 0x0 }, 94 { 0x00D75FFF, 0x00160004, 0x0 }, 95 { 0x00C30FFF, 0x001E0000, 0x0 }, 96 { 0x00FFFFFF, 0x00060006, 0x0 }, 97 { 0x00D75FFF, 0x001E0000, 0x0 }, 98 }; 99 100 static const struct ddi_buf_trans hsw_ddi_translations_hdmi[] = { 101 /* Idx NT mV d T mV d db */ 102 { 0x00FFFFFF, 0x0006000E, 0x0 },/* 0: 400 400 0 */ 103 { 0x00E79FFF, 0x000E000C, 0x0 },/* 1: 400 500 2 */ 104 { 0x00D75FFF, 0x0005000A, 0x0 },/* 2: 400 600 3.5 */ 105 { 0x00FFFFFF, 0x0005000A, 0x0 },/* 3: 600 600 0 */ 106 { 0x00E79FFF, 0x001D0007, 0x0 },/* 4: 600 750 2 */ 107 { 0x00D75FFF, 0x000C0004, 0x0 },/* 5: 600 900 3.5 */ 108 { 0x00FFFFFF, 0x00040006, 0x0 },/* 6: 800 800 0 */ 109 { 0x80E79FFF, 0x00030002, 0x0 },/* 7: 800 1000 2 */ 110 { 0x00FFFFFF, 0x00140005, 0x0 },/* 8: 850 850 0 */ 111 { 0x00FFFFFF, 0x000C0004, 0x0 },/* 9: 900 900 0 */ 112 { 0x00FFFFFF, 0x001C0003, 0x0 },/* 10: 950 950 0 */ 113 { 0x80FFFFFF, 0x00030002, 0x0 },/* 11: 1000 1000 0 */ 114 }; 115 116 static const struct ddi_buf_trans bdw_ddi_translations_edp[] = { 117 { 0x00FFFFFF, 0x00000012, 0x0 }, 118 { 0x00EBAFFF, 0x00020011, 0x0 }, 119 { 0x00C71FFF, 0x0006000F, 0x0 }, 120 { 0x00AAAFFF, 0x000E000A, 0x0 }, 121 { 0x00FFFFFF, 0x00020011, 0x0 }, 122 { 0x00DB6FFF, 0x0005000F, 0x0 }, 123 { 0x00BEEFFF, 0x000A000C, 0x0 }, 124 { 0x00FFFFFF, 0x0005000F, 0x0 }, 125 { 0x00DB6FFF, 0x000A000C, 0x0 }, 126 }; 127 128 static const struct ddi_buf_trans bdw_ddi_translations_dp[] = { 129 { 0x00FFFFFF, 0x0007000E, 0x0 }, 130 { 0x00D75FFF, 0x000E000A, 0x0 }, 131 { 0x00BEFFFF, 0x00140006, 0x0 }, 132 { 0x80B2CFFF, 0x001B0002, 0x0 }, 133 { 0x00FFFFFF, 0x000E000A, 0x0 }, 134 { 0x00DB6FFF, 0x00160005, 0x0 }, 135 { 0x80C71FFF, 0x001A0002, 0x0 }, 136 { 0x00F7DFFF, 0x00180004, 0x0 }, 137 { 0x80D75FFF, 0x001B0002, 0x0 }, 138 }; 139 140 static const struct ddi_buf_trans bdw_ddi_translations_fdi[] = { 141 { 0x00FFFFFF, 0x0001000E, 0x0 }, 142 { 0x00D75FFF, 0x0004000A, 0x0 }, 143 { 0x00C30FFF, 0x00070006, 0x0 }, 144 { 0x00AAAFFF, 0x000C0000, 0x0 }, 145 { 0x00FFFFFF, 0x0004000A, 0x0 }, 146 { 0x00D75FFF, 0x00090004, 0x0 }, 147 { 0x00C30FFF, 0x000C0000, 0x0 }, 148 { 0x00FFFFFF, 0x00070006, 0x0 }, 149 { 0x00D75FFF, 0x000C0000, 0x0 }, 150 }; 151 152 static const struct ddi_buf_trans bdw_ddi_translations_hdmi[] = { 153 /* Idx NT mV d T mV df db */ 154 { 0x00FFFFFF, 0x0007000E, 0x0 },/* 0: 400 400 0 */ 155 { 0x00D75FFF, 0x000E000A, 0x0 },/* 1: 400 600 3.5 */ 156 { 0x00BEFFFF, 0x00140006, 0x0 },/* 2: 400 800 6 */ 157 { 0x00FFFFFF, 0x0009000D, 0x0 },/* 3: 450 450 0 */ 158 { 0x00FFFFFF, 0x000E000A, 0x0 },/* 4: 600 600 0 */ 159 { 0x00D7FFFF, 0x00140006, 0x0 },/* 5: 600 800 2.5 */ 160 { 0x80CB2FFF, 0x001B0002, 0x0 },/* 6: 600 1000 4.5 */ 161 { 0x00FFFFFF, 0x00140006, 0x0 },/* 7: 800 800 0 */ 162 { 0x80E79FFF, 0x001B0002, 0x0 },/* 8: 800 1000 2 */ 163 { 0x80FFFFFF, 0x001B0002, 0x0 },/* 9: 1000 1000 0 */ 164 }; 165 166 /* Skylake H and S */ 167 static const struct ddi_buf_trans skl_ddi_translations_dp[] = { 168 { 0x00002016, 0x000000A0, 0x0 }, 169 { 0x00005012, 0x0000009B, 0x0 }, 170 { 0x00007011, 0x00000088, 0x0 }, 171 { 0x80009010, 0x000000C0, 0x1 }, 172 { 0x00002016, 0x0000009B, 0x0 }, 173 { 0x00005012, 0x00000088, 0x0 }, 174 { 0x80007011, 0x000000C0, 0x1 }, 175 { 0x00002016, 0x000000DF, 0x0 }, 176 { 0x80005012, 0x000000C0, 0x1 }, 177 }; 178 179 /* Skylake U */ 180 static const struct ddi_buf_trans skl_u_ddi_translations_dp[] = { 181 { 0x0000201B, 0x000000A2, 0x0 }, 182 { 0x00005012, 0x00000088, 0x0 }, 183 { 0x80007011, 0x000000CD, 0x1 }, 184 { 0x80009010, 0x000000C0, 0x1 }, 185 { 0x0000201B, 0x0000009D, 0x0 }, 186 { 0x80005012, 0x000000C0, 0x1 }, 187 { 0x80007011, 0x000000C0, 0x1 }, 188 { 0x00002016, 0x00000088, 0x0 }, 189 { 0x80005012, 0x000000C0, 0x1 }, 190 }; 191 192 /* Skylake Y */ 193 static const struct ddi_buf_trans skl_y_ddi_translations_dp[] = { 194 { 0x00000018, 0x000000A2, 0x0 }, 195 { 0x00005012, 0x00000088, 0x0 }, 196 { 0x80007011, 0x000000CD, 0x3 }, 197 { 0x80009010, 0x000000C0, 0x3 }, 198 { 0x00000018, 0x0000009D, 0x0 }, 199 { 0x80005012, 0x000000C0, 0x3 }, 200 { 0x80007011, 0x000000C0, 0x3 }, 201 { 0x00000018, 0x00000088, 0x0 }, 202 { 0x80005012, 0x000000C0, 0x3 }, 203 }; 204 205 /* Kabylake H and S */ 206 static const struct ddi_buf_trans kbl_ddi_translations_dp[] = { 207 { 0x00002016, 0x000000A0, 0x0 }, 208 { 0x00005012, 0x0000009B, 0x0 }, 209 { 0x00007011, 0x00000088, 0x0 }, 210 { 0x80009010, 0x000000C0, 0x1 }, 211 { 0x00002016, 0x0000009B, 0x0 }, 212 { 0x00005012, 0x00000088, 0x0 }, 213 { 0x80007011, 0x000000C0, 0x1 }, 214 { 0x00002016, 0x00000097, 0x0 }, 215 { 0x80005012, 0x000000C0, 0x1 }, 216 }; 217 218 /* Kabylake U */ 219 static const struct ddi_buf_trans kbl_u_ddi_translations_dp[] = { 220 { 0x0000201B, 0x000000A1, 0x0 }, 221 { 0x00005012, 0x00000088, 0x0 }, 222 { 0x80007011, 0x000000CD, 0x3 }, 223 { 0x80009010, 0x000000C0, 0x3 }, 224 { 0x0000201B, 0x0000009D, 0x0 }, 225 { 0x80005012, 0x000000C0, 0x3 }, 226 { 0x80007011, 0x000000C0, 0x3 }, 227 { 0x00002016, 0x0000004F, 0x0 }, 228 { 0x80005012, 0x000000C0, 0x3 }, 229 }; 230 231 /* Kabylake Y */ 232 static const struct ddi_buf_trans kbl_y_ddi_translations_dp[] = { 233 { 0x00001017, 0x000000A1, 0x0 }, 234 { 0x00005012, 0x00000088, 0x0 }, 235 { 0x80007011, 0x000000CD, 0x3 }, 236 { 0x8000800F, 0x000000C0, 0x3 }, 237 { 0x00001017, 0x0000009D, 0x0 }, 238 { 0x80005012, 0x000000C0, 0x3 }, 239 { 0x80007011, 0x000000C0, 0x3 }, 240 { 0x00001017, 0x0000004C, 0x0 }, 241 { 0x80005012, 0x000000C0, 0x3 }, 242 }; 243 244 /* 245 * Skylake/Kabylake H and S 246 * eDP 1.4 low vswing translation parameters 247 */ 248 static const struct ddi_buf_trans skl_ddi_translations_edp[] = { 249 { 0x00000018, 0x000000A8, 0x0 }, 250 { 0x00004013, 0x000000A9, 0x0 }, 251 { 0x00007011, 0x000000A2, 0x0 }, 252 { 0x00009010, 0x0000009C, 0x0 }, 253 { 0x00000018, 0x000000A9, 0x0 }, 254 { 0x00006013, 0x000000A2, 0x0 }, 255 { 0x00007011, 0x000000A6, 0x0 }, 256 { 0x00000018, 0x000000AB, 0x0 }, 257 { 0x00007013, 0x0000009F, 0x0 }, 258 { 0x00000018, 0x000000DF, 0x0 }, 259 }; 260 261 /* 262 * Skylake/Kabylake U 263 * eDP 1.4 low vswing translation parameters 264 */ 265 static const struct ddi_buf_trans skl_u_ddi_translations_edp[] = { 266 { 0x00000018, 0x000000A8, 0x0 }, 267 { 0x00004013, 0x000000A9, 0x0 }, 268 { 0x00007011, 0x000000A2, 0x0 }, 269 { 0x00009010, 0x0000009C, 0x0 }, 270 { 0x00000018, 0x000000A9, 0x0 }, 271 { 0x00006013, 0x000000A2, 0x0 }, 272 { 0x00007011, 0x000000A6, 0x0 }, 273 { 0x00002016, 0x000000AB, 0x0 }, 274 { 0x00005013, 0x0000009F, 0x0 }, 275 { 0x00000018, 0x000000DF, 0x0 }, 276 }; 277 278 /* 279 * Skylake/Kabylake Y 280 * eDP 1.4 low vswing translation parameters 281 */ 282 static const struct ddi_buf_trans skl_y_ddi_translations_edp[] = { 283 { 0x00000018, 0x000000A8, 0x0 }, 284 { 0x00004013, 0x000000AB, 0x0 }, 285 { 0x00007011, 0x000000A4, 0x0 }, 286 { 0x00009010, 0x000000DF, 0x0 }, 287 { 0x00000018, 0x000000AA, 0x0 }, 288 { 0x00006013, 0x000000A4, 0x0 }, 289 { 0x00007011, 0x0000009D, 0x0 }, 290 { 0x00000018, 0x000000A0, 0x0 }, 291 { 0x00006012, 0x000000DF, 0x0 }, 292 { 0x00000018, 0x0000008A, 0x0 }, 293 }; 294 295 /* Skylake/Kabylake U, H and S */ 296 static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = { 297 { 0x00000018, 0x000000AC, 0x0 }, 298 { 0x00005012, 0x0000009D, 0x0 }, 299 { 0x00007011, 0x00000088, 0x0 }, 300 { 0x00000018, 0x000000A1, 0x0 }, 301 { 0x00000018, 0x00000098, 0x0 }, 302 { 0x00004013, 0x00000088, 0x0 }, 303 { 0x80006012, 0x000000CD, 0x1 }, 304 { 0x00000018, 0x000000DF, 0x0 }, 305 { 0x80003015, 0x000000CD, 0x1 }, /* Default */ 306 { 0x80003015, 0x000000C0, 0x1 }, 307 { 0x80000018, 0x000000C0, 0x1 }, 308 }; 309 310 /* Skylake/Kabylake Y */ 311 static const struct ddi_buf_trans skl_y_ddi_translations_hdmi[] = { 312 { 0x00000018, 0x000000A1, 0x0 }, 313 { 0x00005012, 0x000000DF, 0x0 }, 314 { 0x80007011, 0x000000CB, 0x3 }, 315 { 0x00000018, 0x000000A4, 0x0 }, 316 { 0x00000018, 0x0000009D, 0x0 }, 317 { 0x00004013, 0x00000080, 0x0 }, 318 { 0x80006013, 0x000000C0, 0x3 }, 319 { 0x00000018, 0x0000008A, 0x0 }, 320 { 0x80003015, 0x000000C0, 0x3 }, /* Default */ 321 { 0x80003015, 0x000000C0, 0x3 }, 322 { 0x80000018, 0x000000C0, 0x3 }, 323 }; 324 325 struct bxt_ddi_buf_trans { 326 u8 margin; /* swing value */ 327 u8 scale; /* scale value */ 328 u8 enable; /* scale enable */ 329 u8 deemphasis; 330 }; 331 332 static const struct bxt_ddi_buf_trans bxt_ddi_translations_dp[] = { 333 /* Idx NT mV diff db */ 334 { 52, 0x9A, 0, 128, }, /* 0: 400 0 */ 335 { 78, 0x9A, 0, 85, }, /* 1: 400 3.5 */ 336 { 104, 0x9A, 0, 64, }, /* 2: 400 6 */ 337 { 154, 0x9A, 0, 43, }, /* 3: 400 9.5 */ 338 { 77, 0x9A, 0, 128, }, /* 4: 600 0 */ 339 { 116, 0x9A, 0, 85, }, /* 5: 600 3.5 */ 340 { 154, 0x9A, 0, 64, }, /* 6: 600 6 */ 341 { 102, 0x9A, 0, 128, }, /* 7: 800 0 */ 342 { 154, 0x9A, 0, 85, }, /* 8: 800 3.5 */ 343 { 154, 0x9A, 1, 128, }, /* 9: 1200 0 */ 344 }; 345 346 static const struct bxt_ddi_buf_trans bxt_ddi_translations_edp[] = { 347 /* Idx NT mV diff db */ 348 { 26, 0, 0, 128, }, /* 0: 200 0 */ 349 { 38, 0, 0, 112, }, /* 1: 200 1.5 */ 350 { 48, 0, 0, 96, }, /* 2: 200 4 */ 351 { 54, 0, 0, 69, }, /* 3: 200 6 */ 352 { 32, 0, 0, 128, }, /* 4: 250 0 */ 353 { 48, 0, 0, 104, }, /* 5: 250 1.5 */ 354 { 54, 0, 0, 85, }, /* 6: 250 4 */ 355 { 43, 0, 0, 128, }, /* 7: 300 0 */ 356 { 54, 0, 0, 101, }, /* 8: 300 1.5 */ 357 { 48, 0, 0, 128, }, /* 9: 300 0 */ 358 }; 359 360 /* BSpec has 2 recommended values - entries 0 and 8. 361 * Using the entry with higher vswing. 362 */ 363 static const struct bxt_ddi_buf_trans bxt_ddi_translations_hdmi[] = { 364 /* Idx NT mV diff db */ 365 { 52, 0x9A, 0, 128, }, /* 0: 400 0 */ 366 { 52, 0x9A, 0, 85, }, /* 1: 400 3.5 */ 367 { 52, 0x9A, 0, 64, }, /* 2: 400 6 */ 368 { 42, 0x9A, 0, 43, }, /* 3: 400 9.5 */ 369 { 77, 0x9A, 0, 128, }, /* 4: 600 0 */ 370 { 77, 0x9A, 0, 85, }, /* 5: 600 3.5 */ 371 { 77, 0x9A, 0, 64, }, /* 6: 600 6 */ 372 { 102, 0x9A, 0, 128, }, /* 7: 800 0 */ 373 { 102, 0x9A, 0, 85, }, /* 8: 800 3.5 */ 374 { 154, 0x9A, 1, 128, }, /* 9: 1200 0 */ 375 }; 376 377 struct cnl_ddi_buf_trans { 378 u8 dw2_swing_sel; 379 u8 dw7_n_scalar; 380 u8 dw4_cursor_coeff; 381 u8 dw4_post_cursor_2; 382 u8 dw4_post_cursor_1; 383 }; 384 385 /* Voltage Swing Programming for VccIO 0.85V for DP */ 386 static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_0_85V[] = { 387 /* NT mV Trans mV db */ 388 { 0xA, 0x5D, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */ 389 { 0xA, 0x6A, 0x38, 0x00, 0x07 }, /* 350 500 3.1 */ 390 { 0xB, 0x7A, 0x32, 0x00, 0x0D }, /* 350 700 6.0 */ 391 { 0x6, 0x7C, 0x2D, 0x00, 0x12 }, /* 350 900 8.2 */ 392 { 0xA, 0x69, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */ 393 { 0xB, 0x7A, 0x36, 0x00, 0x09 }, /* 500 700 2.9 */ 394 { 0x6, 0x7C, 0x30, 0x00, 0x0F }, /* 500 900 5.1 */ 395 { 0xB, 0x7D, 0x3C, 0x00, 0x03 }, /* 650 725 0.9 */ 396 { 0x6, 0x7C, 0x34, 0x00, 0x0B }, /* 600 900 3.5 */ 397 { 0x6, 0x7B, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */ 398 }; 399 400 /* Voltage Swing Programming for VccIO 0.85V for HDMI */ 401 static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_0_85V[] = { 402 /* NT mV Trans mV db */ 403 { 0xA, 0x60, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */ 404 { 0xB, 0x73, 0x36, 0x00, 0x09 }, /* 450 650 3.2 */ 405 { 0x6, 0x7F, 0x31, 0x00, 0x0E }, /* 450 850 5.5 */ 406 { 0xB, 0x73, 0x3F, 0x00, 0x00 }, /* 650 650 0.0 */ 407 { 0x6, 0x7F, 0x37, 0x00, 0x08 }, /* 650 850 2.3 */ 408 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 850 850 0.0 */ 409 { 0x6, 0x7F, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */ 410 }; 411 412 /* Voltage Swing Programming for VccIO 0.85V for eDP */ 413 static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_0_85V[] = { 414 /* NT mV Trans mV db */ 415 { 0xA, 0x66, 0x3A, 0x00, 0x05 }, /* 384 500 2.3 */ 416 { 0x0, 0x7F, 0x38, 0x00, 0x07 }, /* 153 200 2.3 */ 417 { 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 192 250 2.3 */ 418 { 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 230 300 2.3 */ 419 { 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 269 350 2.3 */ 420 { 0xA, 0x66, 0x3C, 0x00, 0x03 }, /* 446 500 1.0 */ 421 { 0xB, 0x70, 0x3C, 0x00, 0x03 }, /* 460 600 2.3 */ 422 { 0xC, 0x75, 0x3C, 0x00, 0x03 }, /* 537 700 2.3 */ 423 { 0x2, 0x7F, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */ 424 }; 425 426 /* Voltage Swing Programming for VccIO 0.95V for DP */ 427 static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_0_95V[] = { 428 /* NT mV Trans mV db */ 429 { 0xA, 0x5D, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */ 430 { 0xA, 0x6A, 0x38, 0x00, 0x07 }, /* 350 500 3.1 */ 431 { 0xB, 0x7A, 0x32, 0x00, 0x0D }, /* 350 700 6.0 */ 432 { 0x6, 0x7C, 0x2D, 0x00, 0x12 }, /* 350 900 8.2 */ 433 { 0xA, 0x69, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */ 434 { 0xB, 0x7A, 0x36, 0x00, 0x09 }, /* 500 700 2.9 */ 435 { 0x6, 0x7C, 0x30, 0x00, 0x0F }, /* 500 900 5.1 */ 436 { 0xB, 0x7D, 0x3C, 0x00, 0x03 }, /* 650 725 0.9 */ 437 { 0x6, 0x7C, 0x34, 0x00, 0x0B }, /* 600 900 3.5 */ 438 { 0x6, 0x7B, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */ 439 }; 440 441 /* Voltage Swing Programming for VccIO 0.95V for HDMI */ 442 static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_0_95V[] = { 443 /* NT mV Trans mV db */ 444 { 0xA, 0x5C, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */ 445 { 0xB, 0x69, 0x37, 0x00, 0x08 }, /* 400 600 3.5 */ 446 { 0x5, 0x76, 0x31, 0x00, 0x0E }, /* 400 800 6.0 */ 447 { 0xA, 0x5E, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */ 448 { 0xB, 0x69, 0x3F, 0x00, 0x00 }, /* 600 600 0.0 */ 449 { 0xB, 0x79, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */ 450 { 0x6, 0x7D, 0x32, 0x00, 0x0D }, /* 600 1000 4.4 */ 451 { 0x5, 0x76, 0x3F, 0x00, 0x00 }, /* 800 800 0.0 */ 452 { 0x6, 0x7D, 0x39, 0x00, 0x06 }, /* 800 1000 1.9 */ 453 { 0x6, 0x7F, 0x39, 0x00, 0x06 }, /* 850 1050 1.8 */ 454 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 1050 1050 0.0 */ 455 }; 456 457 /* Voltage Swing Programming for VccIO 0.95V for eDP */ 458 static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_0_95V[] = { 459 /* NT mV Trans mV db */ 460 { 0xA, 0x61, 0x3A, 0x00, 0x05 }, /* 384 500 2.3 */ 461 { 0x0, 0x7F, 0x38, 0x00, 0x07 }, /* 153 200 2.3 */ 462 { 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 192 250 2.3 */ 463 { 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 230 300 2.3 */ 464 { 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 269 350 2.3 */ 465 { 0xA, 0x61, 0x3C, 0x00, 0x03 }, /* 446 500 1.0 */ 466 { 0xB, 0x68, 0x39, 0x00, 0x06 }, /* 460 600 2.3 */ 467 { 0xC, 0x6E, 0x39, 0x00, 0x06 }, /* 537 700 2.3 */ 468 { 0x4, 0x7F, 0x3A, 0x00, 0x05 }, /* 460 600 2.3 */ 469 { 0x2, 0x7F, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */ 470 }; 471 472 /* Voltage Swing Programming for VccIO 1.05V for DP */ 473 static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_1_05V[] = { 474 /* NT mV Trans mV db */ 475 { 0xA, 0x58, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */ 476 { 0xB, 0x64, 0x37, 0x00, 0x08 }, /* 400 600 3.5 */ 477 { 0x5, 0x70, 0x31, 0x00, 0x0E }, /* 400 800 6.0 */ 478 { 0x6, 0x7F, 0x2C, 0x00, 0x13 }, /* 400 1050 8.4 */ 479 { 0xB, 0x64, 0x3F, 0x00, 0x00 }, /* 600 600 0.0 */ 480 { 0x5, 0x73, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */ 481 { 0x6, 0x7F, 0x30, 0x00, 0x0F }, /* 550 1050 5.6 */ 482 { 0x5, 0x76, 0x3E, 0x00, 0x01 }, /* 850 900 0.5 */ 483 { 0x6, 0x7F, 0x36, 0x00, 0x09 }, /* 750 1050 2.9 */ 484 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 1050 1050 0.0 */ 485 }; 486 487 /* Voltage Swing Programming for VccIO 1.05V for HDMI */ 488 static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_1_05V[] = { 489 /* NT mV Trans mV db */ 490 { 0xA, 0x58, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */ 491 { 0xB, 0x64, 0x37, 0x00, 0x08 }, /* 400 600 3.5 */ 492 { 0x5, 0x70, 0x31, 0x00, 0x0E }, /* 400 800 6.0 */ 493 { 0xA, 0x5B, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */ 494 { 0xB, 0x64, 0x3F, 0x00, 0x00 }, /* 600 600 0.0 */ 495 { 0x5, 0x73, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */ 496 { 0x6, 0x7C, 0x32, 0x00, 0x0D }, /* 600 1000 4.4 */ 497 { 0x5, 0x70, 0x3F, 0x00, 0x00 }, /* 800 800 0.0 */ 498 { 0x6, 0x7C, 0x39, 0x00, 0x06 }, /* 800 1000 1.9 */ 499 { 0x6, 0x7F, 0x39, 0x00, 0x06 }, /* 850 1050 1.8 */ 500 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 1050 1050 0.0 */ 501 }; 502 503 /* Voltage Swing Programming for VccIO 1.05V for eDP */ 504 static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_1_05V[] = { 505 /* NT mV Trans mV db */ 506 { 0xA, 0x5E, 0x3A, 0x00, 0x05 }, /* 384 500 2.3 */ 507 { 0x0, 0x7F, 0x38, 0x00, 0x07 }, /* 153 200 2.3 */ 508 { 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 192 250 2.3 */ 509 { 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 230 300 2.3 */ 510 { 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 269 350 2.3 */ 511 { 0xA, 0x5E, 0x3C, 0x00, 0x03 }, /* 446 500 1.0 */ 512 { 0xB, 0x64, 0x39, 0x00, 0x06 }, /* 460 600 2.3 */ 513 { 0xE, 0x6A, 0x39, 0x00, 0x06 }, /* 537 700 2.3 */ 514 { 0x2, 0x7F, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */ 515 }; 516 517 /* icl_combo_phy_ddi_translations */ 518 static const struct cnl_ddi_buf_trans icl_combo_phy_ddi_translations_dp_hbr2[] = { 519 /* NT mV Trans mV db */ 520 { 0xA, 0x35, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */ 521 { 0xA, 0x4F, 0x37, 0x00, 0x08 }, /* 350 500 3.1 */ 522 { 0xC, 0x71, 0x2F, 0x00, 0x10 }, /* 350 700 6.0 */ 523 { 0x6, 0x7F, 0x2B, 0x00, 0x14 }, /* 350 900 8.2 */ 524 { 0xA, 0x4C, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */ 525 { 0xC, 0x73, 0x34, 0x00, 0x0B }, /* 500 700 2.9 */ 526 { 0x6, 0x7F, 0x2F, 0x00, 0x10 }, /* 500 900 5.1 */ 527 { 0xC, 0x6C, 0x3C, 0x00, 0x03 }, /* 650 700 0.6 */ 528 { 0x6, 0x7F, 0x35, 0x00, 0x0A }, /* 600 900 3.5 */ 529 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */ 530 }; 531 532 static const struct cnl_ddi_buf_trans icl_combo_phy_ddi_translations_edp_hbr2[] = { 533 /* NT mV Trans mV db */ 534 { 0x0, 0x7F, 0x3F, 0x00, 0x00 }, /* 200 200 0.0 */ 535 { 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 200 250 1.9 */ 536 { 0x1, 0x7F, 0x33, 0x00, 0x0C }, /* 200 300 3.5 */ 537 { 0x9, 0x7F, 0x31, 0x00, 0x0E }, /* 200 350 4.9 */ 538 { 0x8, 0x7F, 0x3F, 0x00, 0x00 }, /* 250 250 0.0 */ 539 { 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 250 300 1.6 */ 540 { 0x9, 0x7F, 0x35, 0x00, 0x0A }, /* 250 350 2.9 */ 541 { 0x1, 0x7F, 0x3F, 0x00, 0x00 }, /* 300 300 0.0 */ 542 { 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 300 350 1.3 */ 543 { 0x9, 0x7F, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */ 544 }; 545 546 static const struct cnl_ddi_buf_trans icl_combo_phy_ddi_translations_edp_hbr3[] = { 547 /* NT mV Trans mV db */ 548 { 0xA, 0x35, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */ 549 { 0xA, 0x4F, 0x37, 0x00, 0x08 }, /* 350 500 3.1 */ 550 { 0xC, 0x71, 0x2F, 0x00, 0x10 }, /* 350 700 6.0 */ 551 { 0x6, 0x7F, 0x2B, 0x00, 0x14 }, /* 350 900 8.2 */ 552 { 0xA, 0x4C, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */ 553 { 0xC, 0x73, 0x34, 0x00, 0x0B }, /* 500 700 2.9 */ 554 { 0x6, 0x7F, 0x2F, 0x00, 0x10 }, /* 500 900 5.1 */ 555 { 0xC, 0x6C, 0x3C, 0x00, 0x03 }, /* 650 700 0.6 */ 556 { 0x6, 0x7F, 0x35, 0x00, 0x0A }, /* 600 900 3.5 */ 557 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */ 558 }; 559 560 static const struct cnl_ddi_buf_trans icl_combo_phy_ddi_translations_hdmi[] = { 561 /* NT mV Trans mV db */ 562 { 0xA, 0x60, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */ 563 { 0xB, 0x73, 0x36, 0x00, 0x09 }, /* 450 650 3.2 */ 564 { 0x6, 0x7F, 0x31, 0x00, 0x0E }, /* 450 850 5.5 */ 565 { 0xB, 0x73, 0x3F, 0x00, 0x00 }, /* 650 650 0.0 ALS */ 566 { 0x6, 0x7F, 0x37, 0x00, 0x08 }, /* 650 850 2.3 */ 567 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 850 850 0.0 */ 568 { 0x6, 0x7F, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */ 569 }; 570 571 struct icl_mg_phy_ddi_buf_trans { 572 u32 cri_txdeemph_override_5_0; 573 u32 cri_txdeemph_override_11_6; 574 u32 cri_txdeemph_override_17_12; 575 }; 576 577 static const struct icl_mg_phy_ddi_buf_trans icl_mg_phy_ddi_translations[] = { 578 /* Voltage swing pre-emphasis */ 579 { 0x0, 0x1B, 0x00 }, /* 0 0 */ 580 { 0x0, 0x23, 0x08 }, /* 0 1 */ 581 { 0x0, 0x2D, 0x12 }, /* 0 2 */ 582 { 0x0, 0x00, 0x00 }, /* 0 3 */ 583 { 0x0, 0x23, 0x00 }, /* 1 0 */ 584 { 0x0, 0x2B, 0x09 }, /* 1 1 */ 585 { 0x0, 0x2E, 0x11 }, /* 1 2 */ 586 { 0x0, 0x2F, 0x00 }, /* 2 0 */ 587 { 0x0, 0x33, 0x0C }, /* 2 1 */ 588 { 0x0, 0x00, 0x00 }, /* 3 0 */ 589 }; 590 591 struct tgl_dkl_phy_ddi_buf_trans { 592 u32 dkl_vswing_control; 593 u32 dkl_preshoot_control; 594 u32 dkl_de_emphasis_control; 595 }; 596 597 static const struct tgl_dkl_phy_ddi_buf_trans tgl_dkl_phy_dp_ddi_trans[] = { 598 /* VS pre-emp Non-trans mV Pre-emph dB */ 599 { 0x7, 0x0, 0x00 }, /* 0 0 400mV 0 dB */ 600 { 0x5, 0x0, 0x03 }, /* 0 1 400mV 3.5 dB */ 601 { 0x2, 0x0, 0x0b }, /* 0 2 400mV 6 dB */ 602 { 0x0, 0x0, 0x19 }, /* 0 3 400mV 9.5 dB */ 603 { 0x5, 0x0, 0x00 }, /* 1 0 600mV 0 dB */ 604 { 0x2, 0x0, 0x03 }, /* 1 1 600mV 3.5 dB */ 605 { 0x0, 0x0, 0x14 }, /* 1 2 600mV 6 dB */ 606 { 0x2, 0x0, 0x00 }, /* 2 0 800mV 0 dB */ 607 { 0x0, 0x0, 0x0B }, /* 2 1 800mV 3.5 dB */ 608 { 0x0, 0x0, 0x00 }, /* 3 0 1200mV 0 dB HDMI default */ 609 }; 610 611 static const struct tgl_dkl_phy_ddi_buf_trans tgl_dkl_phy_hdmi_ddi_trans[] = { 612 /* HDMI Preset VS Pre-emph */ 613 { 0x7, 0x0, 0x0 }, /* 1 400mV 0dB */ 614 { 0x6, 0x0, 0x0 }, /* 2 500mV 0dB */ 615 { 0x4, 0x0, 0x0 }, /* 3 650mV 0dB */ 616 { 0x2, 0x0, 0x0 }, /* 4 800mV 0dB */ 617 { 0x0, 0x0, 0x0 }, /* 5 1000mV 0dB */ 618 { 0x0, 0x0, 0x5 }, /* 6 Full -1.5 dB */ 619 { 0x0, 0x0, 0x6 }, /* 7 Full -1.8 dB */ 620 { 0x0, 0x0, 0x7 }, /* 8 Full -2 dB */ 621 { 0x0, 0x0, 0x8 }, /* 9 Full -2.5 dB */ 622 { 0x0, 0x0, 0xA }, /* 10 Full -3 dB */ 623 }; 624 625 static const struct ddi_buf_trans * 626 bdw_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries) 627 { 628 if (dev_priv->vbt.edp.low_vswing) { 629 *n_entries = ARRAY_SIZE(bdw_ddi_translations_edp); 630 return bdw_ddi_translations_edp; 631 } else { 632 *n_entries = ARRAY_SIZE(bdw_ddi_translations_dp); 633 return bdw_ddi_translations_dp; 634 } 635 } 636 637 static const struct ddi_buf_trans * 638 skl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries) 639 { 640 if (IS_SKL_ULX(dev_priv)) { 641 *n_entries = ARRAY_SIZE(skl_y_ddi_translations_dp); 642 return skl_y_ddi_translations_dp; 643 } else if (IS_SKL_ULT(dev_priv)) { 644 *n_entries = ARRAY_SIZE(skl_u_ddi_translations_dp); 645 return skl_u_ddi_translations_dp; 646 } else { 647 *n_entries = ARRAY_SIZE(skl_ddi_translations_dp); 648 return skl_ddi_translations_dp; 649 } 650 } 651 652 static const struct ddi_buf_trans * 653 kbl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries) 654 { 655 if (IS_KBL_ULX(dev_priv) || IS_CFL_ULX(dev_priv)) { 656 *n_entries = ARRAY_SIZE(kbl_y_ddi_translations_dp); 657 return kbl_y_ddi_translations_dp; 658 } else if (IS_KBL_ULT(dev_priv) || IS_CFL_ULT(dev_priv)) { 659 *n_entries = ARRAY_SIZE(kbl_u_ddi_translations_dp); 660 return kbl_u_ddi_translations_dp; 661 } else { 662 *n_entries = ARRAY_SIZE(kbl_ddi_translations_dp); 663 return kbl_ddi_translations_dp; 664 } 665 } 666 667 static const struct ddi_buf_trans * 668 skl_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries) 669 { 670 if (dev_priv->vbt.edp.low_vswing) { 671 if (IS_SKL_ULX(dev_priv) || IS_KBL_ULX(dev_priv) || 672 IS_CFL_ULX(dev_priv)) { 673 *n_entries = ARRAY_SIZE(skl_y_ddi_translations_edp); 674 return skl_y_ddi_translations_edp; 675 } else if (IS_SKL_ULT(dev_priv) || IS_KBL_ULT(dev_priv) || 676 IS_CFL_ULT(dev_priv)) { 677 *n_entries = ARRAY_SIZE(skl_u_ddi_translations_edp); 678 return skl_u_ddi_translations_edp; 679 } else { 680 *n_entries = ARRAY_SIZE(skl_ddi_translations_edp); 681 return skl_ddi_translations_edp; 682 } 683 } 684 685 if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) 686 return kbl_get_buf_trans_dp(dev_priv, n_entries); 687 else 688 return skl_get_buf_trans_dp(dev_priv, n_entries); 689 } 690 691 static const struct ddi_buf_trans * 692 skl_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, int *n_entries) 693 { 694 if (IS_SKL_ULX(dev_priv) || IS_KBL_ULX(dev_priv) || 695 IS_CFL_ULX(dev_priv)) { 696 *n_entries = ARRAY_SIZE(skl_y_ddi_translations_hdmi); 697 return skl_y_ddi_translations_hdmi; 698 } else { 699 *n_entries = ARRAY_SIZE(skl_ddi_translations_hdmi); 700 return skl_ddi_translations_hdmi; 701 } 702 } 703 704 static int skl_buf_trans_num_entries(enum port port, int n_entries) 705 { 706 /* Only DDIA and DDIE can select the 10th register with DP */ 707 if (port == PORT_A || port == PORT_E) 708 return min(n_entries, 10); 709 else 710 return min(n_entries, 9); 711 } 712 713 static const struct ddi_buf_trans * 714 intel_ddi_get_buf_trans_dp(struct drm_i915_private *dev_priv, 715 enum port port, int *n_entries) 716 { 717 if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) { 718 const struct ddi_buf_trans *ddi_translations = 719 kbl_get_buf_trans_dp(dev_priv, n_entries); 720 *n_entries = skl_buf_trans_num_entries(port, *n_entries); 721 return ddi_translations; 722 } else if (IS_SKYLAKE(dev_priv)) { 723 const struct ddi_buf_trans *ddi_translations = 724 skl_get_buf_trans_dp(dev_priv, n_entries); 725 *n_entries = skl_buf_trans_num_entries(port, *n_entries); 726 return ddi_translations; 727 } else if (IS_BROADWELL(dev_priv)) { 728 *n_entries = ARRAY_SIZE(bdw_ddi_translations_dp); 729 return bdw_ddi_translations_dp; 730 } else if (IS_HASWELL(dev_priv)) { 731 *n_entries = ARRAY_SIZE(hsw_ddi_translations_dp); 732 return hsw_ddi_translations_dp; 733 } 734 735 *n_entries = 0; 736 return NULL; 737 } 738 739 static const struct ddi_buf_trans * 740 intel_ddi_get_buf_trans_edp(struct drm_i915_private *dev_priv, 741 enum port port, int *n_entries) 742 { 743 if (IS_GEN9_BC(dev_priv)) { 744 const struct ddi_buf_trans *ddi_translations = 745 skl_get_buf_trans_edp(dev_priv, n_entries); 746 *n_entries = skl_buf_trans_num_entries(port, *n_entries); 747 return ddi_translations; 748 } else if (IS_BROADWELL(dev_priv)) { 749 return bdw_get_buf_trans_edp(dev_priv, n_entries); 750 } else if (IS_HASWELL(dev_priv)) { 751 *n_entries = ARRAY_SIZE(hsw_ddi_translations_dp); 752 return hsw_ddi_translations_dp; 753 } 754 755 *n_entries = 0; 756 return NULL; 757 } 758 759 static const struct ddi_buf_trans * 760 intel_ddi_get_buf_trans_fdi(struct drm_i915_private *dev_priv, 761 int *n_entries) 762 { 763 if (IS_BROADWELL(dev_priv)) { 764 *n_entries = ARRAY_SIZE(bdw_ddi_translations_fdi); 765 return bdw_ddi_translations_fdi; 766 } else if (IS_HASWELL(dev_priv)) { 767 *n_entries = ARRAY_SIZE(hsw_ddi_translations_fdi); 768 return hsw_ddi_translations_fdi; 769 } 770 771 *n_entries = 0; 772 return NULL; 773 } 774 775 static const struct ddi_buf_trans * 776 intel_ddi_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, 777 int *n_entries) 778 { 779 if (IS_GEN9_BC(dev_priv)) { 780 return skl_get_buf_trans_hdmi(dev_priv, n_entries); 781 } else if (IS_BROADWELL(dev_priv)) { 782 *n_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi); 783 return bdw_ddi_translations_hdmi; 784 } else if (IS_HASWELL(dev_priv)) { 785 *n_entries = ARRAY_SIZE(hsw_ddi_translations_hdmi); 786 return hsw_ddi_translations_hdmi; 787 } 788 789 *n_entries = 0; 790 return NULL; 791 } 792 793 static const struct bxt_ddi_buf_trans * 794 bxt_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries) 795 { 796 *n_entries = ARRAY_SIZE(bxt_ddi_translations_dp); 797 return bxt_ddi_translations_dp; 798 } 799 800 static const struct bxt_ddi_buf_trans * 801 bxt_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries) 802 { 803 if (dev_priv->vbt.edp.low_vswing) { 804 *n_entries = ARRAY_SIZE(bxt_ddi_translations_edp); 805 return bxt_ddi_translations_edp; 806 } 807 808 return bxt_get_buf_trans_dp(dev_priv, n_entries); 809 } 810 811 static const struct bxt_ddi_buf_trans * 812 bxt_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, int *n_entries) 813 { 814 *n_entries = ARRAY_SIZE(bxt_ddi_translations_hdmi); 815 return bxt_ddi_translations_hdmi; 816 } 817 818 static const struct cnl_ddi_buf_trans * 819 cnl_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, int *n_entries) 820 { 821 u32 voltage = I915_READ(CNL_PORT_COMP_DW3) & VOLTAGE_INFO_MASK; 822 823 if (voltage == VOLTAGE_INFO_0_85V) { 824 *n_entries = ARRAY_SIZE(cnl_ddi_translations_hdmi_0_85V); 825 return cnl_ddi_translations_hdmi_0_85V; 826 } else if (voltage == VOLTAGE_INFO_0_95V) { 827 *n_entries = ARRAY_SIZE(cnl_ddi_translations_hdmi_0_95V); 828 return cnl_ddi_translations_hdmi_0_95V; 829 } else if (voltage == VOLTAGE_INFO_1_05V) { 830 *n_entries = ARRAY_SIZE(cnl_ddi_translations_hdmi_1_05V); 831 return cnl_ddi_translations_hdmi_1_05V; 832 } else { 833 *n_entries = 1; /* shut up gcc */ 834 MISSING_CASE(voltage); 835 } 836 return NULL; 837 } 838 839 static const struct cnl_ddi_buf_trans * 840 cnl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries) 841 { 842 u32 voltage = I915_READ(CNL_PORT_COMP_DW3) & VOLTAGE_INFO_MASK; 843 844 if (voltage == VOLTAGE_INFO_0_85V) { 845 *n_entries = ARRAY_SIZE(cnl_ddi_translations_dp_0_85V); 846 return cnl_ddi_translations_dp_0_85V; 847 } else if (voltage == VOLTAGE_INFO_0_95V) { 848 *n_entries = ARRAY_SIZE(cnl_ddi_translations_dp_0_95V); 849 return cnl_ddi_translations_dp_0_95V; 850 } else if (voltage == VOLTAGE_INFO_1_05V) { 851 *n_entries = ARRAY_SIZE(cnl_ddi_translations_dp_1_05V); 852 return cnl_ddi_translations_dp_1_05V; 853 } else { 854 *n_entries = 1; /* shut up gcc */ 855 MISSING_CASE(voltage); 856 } 857 return NULL; 858 } 859 860 static const struct cnl_ddi_buf_trans * 861 cnl_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries) 862 { 863 u32 voltage = I915_READ(CNL_PORT_COMP_DW3) & VOLTAGE_INFO_MASK; 864 865 if (dev_priv->vbt.edp.low_vswing) { 866 if (voltage == VOLTAGE_INFO_0_85V) { 867 *n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_0_85V); 868 return cnl_ddi_translations_edp_0_85V; 869 } else if (voltage == VOLTAGE_INFO_0_95V) { 870 *n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_0_95V); 871 return cnl_ddi_translations_edp_0_95V; 872 } else if (voltage == VOLTAGE_INFO_1_05V) { 873 *n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_1_05V); 874 return cnl_ddi_translations_edp_1_05V; 875 } else { 876 *n_entries = 1; /* shut up gcc */ 877 MISSING_CASE(voltage); 878 } 879 return NULL; 880 } else { 881 return cnl_get_buf_trans_dp(dev_priv, n_entries); 882 } 883 } 884 885 static const struct cnl_ddi_buf_trans * 886 icl_get_combo_buf_trans(struct drm_i915_private *dev_priv, int type, int rate, 887 int *n_entries) 888 { 889 if (type == INTEL_OUTPUT_HDMI) { 890 *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_hdmi); 891 return icl_combo_phy_ddi_translations_hdmi; 892 } else if (rate > 540000 && type == INTEL_OUTPUT_EDP) { 893 *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_edp_hbr3); 894 return icl_combo_phy_ddi_translations_edp_hbr3; 895 } else if (type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp.low_vswing) { 896 *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_edp_hbr2); 897 return icl_combo_phy_ddi_translations_edp_hbr2; 898 } 899 900 *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_dp_hbr2); 901 return icl_combo_phy_ddi_translations_dp_hbr2; 902 } 903 904 static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port port) 905 { 906 struct ddi_vbt_port_info *port_info = &dev_priv->vbt.ddi_port_info[port]; 907 int n_entries, level, default_entry; 908 enum phy phy = intel_port_to_phy(dev_priv, port); 909 910 if (INTEL_GEN(dev_priv) >= 12) { 911 if (intel_phy_is_combo(dev_priv, phy)) 912 icl_get_combo_buf_trans(dev_priv, INTEL_OUTPUT_HDMI, 913 0, &n_entries); 914 else 915 n_entries = ARRAY_SIZE(tgl_dkl_phy_hdmi_ddi_trans); 916 default_entry = n_entries - 1; 917 } else if (INTEL_GEN(dev_priv) == 11) { 918 if (intel_phy_is_combo(dev_priv, phy)) 919 icl_get_combo_buf_trans(dev_priv, INTEL_OUTPUT_HDMI, 920 0, &n_entries); 921 else 922 n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations); 923 default_entry = n_entries - 1; 924 } else if (IS_CANNONLAKE(dev_priv)) { 925 cnl_get_buf_trans_hdmi(dev_priv, &n_entries); 926 default_entry = n_entries - 1; 927 } else if (IS_GEN9_LP(dev_priv)) { 928 bxt_get_buf_trans_hdmi(dev_priv, &n_entries); 929 default_entry = n_entries - 1; 930 } else if (IS_GEN9_BC(dev_priv)) { 931 intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries); 932 default_entry = 8; 933 } else if (IS_BROADWELL(dev_priv)) { 934 intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries); 935 default_entry = 7; 936 } else if (IS_HASWELL(dev_priv)) { 937 intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries); 938 default_entry = 6; 939 } else { 940 WARN(1, "ddi translation table missing\n"); 941 return 0; 942 } 943 944 if (WARN_ON_ONCE(n_entries == 0)) 945 return 0; 946 947 if (port_info->hdmi_level_shift_set) 948 level = port_info->hdmi_level_shift; 949 else 950 level = default_entry; 951 952 if (WARN_ON_ONCE(level >= n_entries)) 953 level = n_entries - 1; 954 955 return level; 956 } 957 958 /* 959 * Starting with Haswell, DDI port buffers must be programmed with correct 960 * values in advance. This function programs the correct values for 961 * DP/eDP/FDI use cases. 962 */ 963 static void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder, 964 const struct intel_crtc_state *crtc_state) 965 { 966 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 967 u32 iboost_bit = 0; 968 int i, n_entries; 969 enum port port = encoder->port; 970 const struct ddi_buf_trans *ddi_translations; 971 972 if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) 973 ddi_translations = intel_ddi_get_buf_trans_fdi(dev_priv, 974 &n_entries); 975 else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP)) 976 ddi_translations = intel_ddi_get_buf_trans_edp(dev_priv, port, 977 &n_entries); 978 else 979 ddi_translations = intel_ddi_get_buf_trans_dp(dev_priv, port, 980 &n_entries); 981 982 /* If we're boosting the current, set bit 31 of trans1 */ 983 if (IS_GEN9_BC(dev_priv) && 984 dev_priv->vbt.ddi_port_info[port].dp_boost_level) 985 iboost_bit = DDI_BUF_BALANCE_LEG_ENABLE; 986 987 for (i = 0; i < n_entries; i++) { 988 I915_WRITE(DDI_BUF_TRANS_LO(port, i), 989 ddi_translations[i].trans1 | iboost_bit); 990 I915_WRITE(DDI_BUF_TRANS_HI(port, i), 991 ddi_translations[i].trans2); 992 } 993 } 994 995 /* 996 * Starting with Haswell, DDI port buffers must be programmed with correct 997 * values in advance. This function programs the correct values for 998 * HDMI/DVI use cases. 999 */ 1000 static void intel_prepare_hdmi_ddi_buffers(struct intel_encoder *encoder, 1001 int level) 1002 { 1003 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1004 u32 iboost_bit = 0; 1005 int n_entries; 1006 enum port port = encoder->port; 1007 const struct ddi_buf_trans *ddi_translations; 1008 1009 ddi_translations = intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries); 1010 1011 if (WARN_ON_ONCE(!ddi_translations)) 1012 return; 1013 if (WARN_ON_ONCE(level >= n_entries)) 1014 level = n_entries - 1; 1015 1016 /* If we're boosting the current, set bit 31 of trans1 */ 1017 if (IS_GEN9_BC(dev_priv) && 1018 dev_priv->vbt.ddi_port_info[port].hdmi_boost_level) 1019 iboost_bit = DDI_BUF_BALANCE_LEG_ENABLE; 1020 1021 /* Entry 9 is for HDMI: */ 1022 I915_WRITE(DDI_BUF_TRANS_LO(port, 9), 1023 ddi_translations[level].trans1 | iboost_bit); 1024 I915_WRITE(DDI_BUF_TRANS_HI(port, 9), 1025 ddi_translations[level].trans2); 1026 } 1027 1028 static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv, 1029 enum port port) 1030 { 1031 i915_reg_t reg = DDI_BUF_CTL(port); 1032 int i; 1033 1034 for (i = 0; i < 16; i++) { 1035 udelay(1); 1036 if (I915_READ(reg) & DDI_BUF_IS_IDLE) 1037 return; 1038 } 1039 DRM_ERROR("Timeout waiting for DDI BUF %c idle bit\n", port_name(port)); 1040 } 1041 1042 static u32 hsw_pll_to_ddi_pll_sel(const struct intel_shared_dpll *pll) 1043 { 1044 switch (pll->info->id) { 1045 case DPLL_ID_WRPLL1: 1046 return PORT_CLK_SEL_WRPLL1; 1047 case DPLL_ID_WRPLL2: 1048 return PORT_CLK_SEL_WRPLL2; 1049 case DPLL_ID_SPLL: 1050 return PORT_CLK_SEL_SPLL; 1051 case DPLL_ID_LCPLL_810: 1052 return PORT_CLK_SEL_LCPLL_810; 1053 case DPLL_ID_LCPLL_1350: 1054 return PORT_CLK_SEL_LCPLL_1350; 1055 case DPLL_ID_LCPLL_2700: 1056 return PORT_CLK_SEL_LCPLL_2700; 1057 default: 1058 MISSING_CASE(pll->info->id); 1059 return PORT_CLK_SEL_NONE; 1060 } 1061 } 1062 1063 static u32 icl_pll_to_ddi_clk_sel(struct intel_encoder *encoder, 1064 const struct intel_crtc_state *crtc_state) 1065 { 1066 const struct intel_shared_dpll *pll = crtc_state->shared_dpll; 1067 int clock = crtc_state->port_clock; 1068 const enum intel_dpll_id id = pll->info->id; 1069 1070 switch (id) { 1071 default: 1072 /* 1073 * DPLL_ID_ICL_DPLL0 and DPLL_ID_ICL_DPLL1 should not be used 1074 * here, so do warn if this get passed in 1075 */ 1076 MISSING_CASE(id); 1077 return DDI_CLK_SEL_NONE; 1078 case DPLL_ID_ICL_TBTPLL: 1079 switch (clock) { 1080 case 162000: 1081 return DDI_CLK_SEL_TBT_162; 1082 case 270000: 1083 return DDI_CLK_SEL_TBT_270; 1084 case 540000: 1085 return DDI_CLK_SEL_TBT_540; 1086 case 810000: 1087 return DDI_CLK_SEL_TBT_810; 1088 default: 1089 MISSING_CASE(clock); 1090 return DDI_CLK_SEL_NONE; 1091 } 1092 case DPLL_ID_ICL_MGPLL1: 1093 case DPLL_ID_ICL_MGPLL2: 1094 case DPLL_ID_ICL_MGPLL3: 1095 case DPLL_ID_ICL_MGPLL4: 1096 case DPLL_ID_TGL_MGPLL5: 1097 case DPLL_ID_TGL_MGPLL6: 1098 return DDI_CLK_SEL_MG; 1099 } 1100 } 1101 1102 /* Starting with Haswell, different DDI ports can work in FDI mode for 1103 * connection to the PCH-located connectors. For this, it is necessary to train 1104 * both the DDI port and PCH receiver for the desired DDI buffer settings. 1105 * 1106 * The recommended port to work in FDI mode is DDI E, which we use here. Also, 1107 * please note that when FDI mode is active on DDI E, it shares 2 lines with 1108 * DDI A (which is used for eDP) 1109 */ 1110 1111 void hsw_fdi_link_train(struct intel_encoder *encoder, 1112 const struct intel_crtc_state *crtc_state) 1113 { 1114 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1115 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1116 u32 temp, i, rx_ctl_val, ddi_pll_sel; 1117 1118 intel_prepare_dp_ddi_buffers(encoder, crtc_state); 1119 1120 /* Set the FDI_RX_MISC pwrdn lanes and the 2 workarounds listed at the 1121 * mode set "sequence for CRT port" document: 1122 * - TP1 to TP2 time with the default value 1123 * - FDI delay to 90h 1124 * 1125 * WaFDIAutoLinkSetTimingOverrride:hsw 1126 */ 1127 I915_WRITE(FDI_RX_MISC(PIPE_A), FDI_RX_PWRDN_LANE1_VAL(2) | 1128 FDI_RX_PWRDN_LANE0_VAL(2) | 1129 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90); 1130 1131 /* Enable the PCH Receiver FDI PLL */ 1132 rx_ctl_val = dev_priv->fdi_rx_config | FDI_RX_ENHANCE_FRAME_ENABLE | 1133 FDI_RX_PLL_ENABLE | 1134 FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes); 1135 I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val); 1136 POSTING_READ(FDI_RX_CTL(PIPE_A)); 1137 udelay(220); 1138 1139 /* Switch from Rawclk to PCDclk */ 1140 rx_ctl_val |= FDI_PCDCLK; 1141 I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val); 1142 1143 /* Configure Port Clock Select */ 1144 ddi_pll_sel = hsw_pll_to_ddi_pll_sel(crtc_state->shared_dpll); 1145 I915_WRITE(PORT_CLK_SEL(PORT_E), ddi_pll_sel); 1146 WARN_ON(ddi_pll_sel != PORT_CLK_SEL_SPLL); 1147 1148 /* Start the training iterating through available voltages and emphasis, 1149 * testing each value twice. */ 1150 for (i = 0; i < ARRAY_SIZE(hsw_ddi_translations_fdi) * 2; i++) { 1151 /* Configure DP_TP_CTL with auto-training */ 1152 I915_WRITE(DP_TP_CTL(PORT_E), 1153 DP_TP_CTL_FDI_AUTOTRAIN | 1154 DP_TP_CTL_ENHANCED_FRAME_ENABLE | 1155 DP_TP_CTL_LINK_TRAIN_PAT1 | 1156 DP_TP_CTL_ENABLE); 1157 1158 /* Configure and enable DDI_BUF_CTL for DDI E with next voltage. 1159 * DDI E does not support port reversal, the functionality is 1160 * achieved on the PCH side in FDI_RX_CTL, so no need to set the 1161 * port reversal bit */ 1162 I915_WRITE(DDI_BUF_CTL(PORT_E), 1163 DDI_BUF_CTL_ENABLE | 1164 ((crtc_state->fdi_lanes - 1) << 1) | 1165 DDI_BUF_TRANS_SELECT(i / 2)); 1166 POSTING_READ(DDI_BUF_CTL(PORT_E)); 1167 1168 udelay(600); 1169 1170 /* Program PCH FDI Receiver TU */ 1171 I915_WRITE(FDI_RX_TUSIZE1(PIPE_A), TU_SIZE(64)); 1172 1173 /* Enable PCH FDI Receiver with auto-training */ 1174 rx_ctl_val |= FDI_RX_ENABLE | FDI_LINK_TRAIN_AUTO; 1175 I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val); 1176 POSTING_READ(FDI_RX_CTL(PIPE_A)); 1177 1178 /* Wait for FDI receiver lane calibration */ 1179 udelay(30); 1180 1181 /* Unset FDI_RX_MISC pwrdn lanes */ 1182 temp = I915_READ(FDI_RX_MISC(PIPE_A)); 1183 temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); 1184 I915_WRITE(FDI_RX_MISC(PIPE_A), temp); 1185 POSTING_READ(FDI_RX_MISC(PIPE_A)); 1186 1187 /* Wait for FDI auto training time */ 1188 udelay(5); 1189 1190 temp = I915_READ(DP_TP_STATUS(PORT_E)); 1191 if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) { 1192 DRM_DEBUG_KMS("FDI link training done on step %d\n", i); 1193 break; 1194 } 1195 1196 /* 1197 * Leave things enabled even if we failed to train FDI. 1198 * Results in less fireworks from the state checker. 1199 */ 1200 if (i == ARRAY_SIZE(hsw_ddi_translations_fdi) * 2 - 1) { 1201 DRM_ERROR("FDI link training failed!\n"); 1202 break; 1203 } 1204 1205 rx_ctl_val &= ~FDI_RX_ENABLE; 1206 I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val); 1207 POSTING_READ(FDI_RX_CTL(PIPE_A)); 1208 1209 temp = I915_READ(DDI_BUF_CTL(PORT_E)); 1210 temp &= ~DDI_BUF_CTL_ENABLE; 1211 I915_WRITE(DDI_BUF_CTL(PORT_E), temp); 1212 POSTING_READ(DDI_BUF_CTL(PORT_E)); 1213 1214 /* Disable DP_TP_CTL and FDI_RX_CTL and retry */ 1215 temp = I915_READ(DP_TP_CTL(PORT_E)); 1216 temp &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); 1217 temp |= DP_TP_CTL_LINK_TRAIN_PAT1; 1218 I915_WRITE(DP_TP_CTL(PORT_E), temp); 1219 POSTING_READ(DP_TP_CTL(PORT_E)); 1220 1221 intel_wait_ddi_buf_idle(dev_priv, PORT_E); 1222 1223 /* Reset FDI_RX_MISC pwrdn lanes */ 1224 temp = I915_READ(FDI_RX_MISC(PIPE_A)); 1225 temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); 1226 temp |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2); 1227 I915_WRITE(FDI_RX_MISC(PIPE_A), temp); 1228 POSTING_READ(FDI_RX_MISC(PIPE_A)); 1229 } 1230 1231 /* Enable normal pixel sending for FDI */ 1232 I915_WRITE(DP_TP_CTL(PORT_E), 1233 DP_TP_CTL_FDI_AUTOTRAIN | 1234 DP_TP_CTL_LINK_TRAIN_NORMAL | 1235 DP_TP_CTL_ENHANCED_FRAME_ENABLE | 1236 DP_TP_CTL_ENABLE); 1237 } 1238 1239 static void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder) 1240 { 1241 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 1242 struct intel_digital_port *intel_dig_port = 1243 enc_to_dig_port(encoder); 1244 1245 intel_dp->DP = intel_dig_port->saved_port_bits | 1246 DDI_BUF_CTL_ENABLE | DDI_BUF_TRANS_SELECT(0); 1247 intel_dp->DP |= DDI_PORT_WIDTH(intel_dp->lane_count); 1248 } 1249 1250 static struct intel_encoder * 1251 intel_ddi_get_crtc_encoder(struct intel_crtc *crtc) 1252 { 1253 struct drm_device *dev = crtc->base.dev; 1254 struct intel_encoder *encoder, *ret = NULL; 1255 int num_encoders = 0; 1256 1257 for_each_encoder_on_crtc(dev, &crtc->base, encoder) { 1258 ret = encoder; 1259 num_encoders++; 1260 } 1261 1262 if (num_encoders != 1) 1263 WARN(1, "%d encoders on crtc for pipe %c\n", num_encoders, 1264 pipe_name(crtc->pipe)); 1265 1266 BUG_ON(ret == NULL); 1267 return ret; 1268 } 1269 1270 static int hsw_ddi_calc_wrpll_link(struct drm_i915_private *dev_priv, 1271 i915_reg_t reg) 1272 { 1273 int refclk; 1274 int n, p, r; 1275 u32 wrpll; 1276 1277 wrpll = I915_READ(reg); 1278 switch (wrpll & WRPLL_REF_MASK) { 1279 case WRPLL_REF_SPECIAL_HSW: 1280 /* 1281 * muxed-SSC for BDW. 1282 * non-SSC for non-ULT HSW. Check FUSE_STRAP3 1283 * for the non-SSC reference frequency. 1284 */ 1285 if (IS_HASWELL(dev_priv) && !IS_HSW_ULT(dev_priv)) { 1286 if (I915_READ(FUSE_STRAP3) & HSW_REF_CLK_SELECT) 1287 refclk = 24; 1288 else 1289 refclk = 135; 1290 break; 1291 } 1292 /* fall through */ 1293 case WRPLL_REF_PCH_SSC: 1294 /* 1295 * We could calculate spread here, but our checking 1296 * code only cares about 5% accuracy, and spread is a max of 1297 * 0.5% downspread. 1298 */ 1299 refclk = 135; 1300 break; 1301 case WRPLL_REF_LCPLL: 1302 refclk = 2700; 1303 break; 1304 default: 1305 MISSING_CASE(wrpll); 1306 return 0; 1307 } 1308 1309 r = wrpll & WRPLL_DIVIDER_REF_MASK; 1310 p = (wrpll & WRPLL_DIVIDER_POST_MASK) >> WRPLL_DIVIDER_POST_SHIFT; 1311 n = (wrpll & WRPLL_DIVIDER_FB_MASK) >> WRPLL_DIVIDER_FB_SHIFT; 1312 1313 /* Convert to KHz, p & r have a fixed point portion */ 1314 return (refclk * n * 100) / (p * r); 1315 } 1316 1317 static int skl_calc_wrpll_link(const struct intel_dpll_hw_state *pll_state) 1318 { 1319 u32 p0, p1, p2, dco_freq; 1320 1321 p0 = pll_state->cfgcr2 & DPLL_CFGCR2_PDIV_MASK; 1322 p2 = pll_state->cfgcr2 & DPLL_CFGCR2_KDIV_MASK; 1323 1324 if (pll_state->cfgcr2 & DPLL_CFGCR2_QDIV_MODE(1)) 1325 p1 = (pll_state->cfgcr2 & DPLL_CFGCR2_QDIV_RATIO_MASK) >> 8; 1326 else 1327 p1 = 1; 1328 1329 1330 switch (p0) { 1331 case DPLL_CFGCR2_PDIV_1: 1332 p0 = 1; 1333 break; 1334 case DPLL_CFGCR2_PDIV_2: 1335 p0 = 2; 1336 break; 1337 case DPLL_CFGCR2_PDIV_3: 1338 p0 = 3; 1339 break; 1340 case DPLL_CFGCR2_PDIV_7: 1341 p0 = 7; 1342 break; 1343 } 1344 1345 switch (p2) { 1346 case DPLL_CFGCR2_KDIV_5: 1347 p2 = 5; 1348 break; 1349 case DPLL_CFGCR2_KDIV_2: 1350 p2 = 2; 1351 break; 1352 case DPLL_CFGCR2_KDIV_3: 1353 p2 = 3; 1354 break; 1355 case DPLL_CFGCR2_KDIV_1: 1356 p2 = 1; 1357 break; 1358 } 1359 1360 dco_freq = (pll_state->cfgcr1 & DPLL_CFGCR1_DCO_INTEGER_MASK) 1361 * 24 * 1000; 1362 1363 dco_freq += (((pll_state->cfgcr1 & DPLL_CFGCR1_DCO_FRACTION_MASK) >> 9) 1364 * 24 * 1000) / 0x8000; 1365 1366 if (WARN_ON(p0 == 0 || p1 == 0 || p2 == 0)) 1367 return 0; 1368 1369 return dco_freq / (p0 * p1 * p2 * 5); 1370 } 1371 1372 int cnl_calc_wrpll_link(struct drm_i915_private *dev_priv, 1373 struct intel_dpll_hw_state *pll_state) 1374 { 1375 u32 p0, p1, p2, dco_freq, ref_clock; 1376 1377 p0 = pll_state->cfgcr1 & DPLL_CFGCR1_PDIV_MASK; 1378 p2 = pll_state->cfgcr1 & DPLL_CFGCR1_KDIV_MASK; 1379 1380 if (pll_state->cfgcr1 & DPLL_CFGCR1_QDIV_MODE(1)) 1381 p1 = (pll_state->cfgcr1 & DPLL_CFGCR1_QDIV_RATIO_MASK) >> 1382 DPLL_CFGCR1_QDIV_RATIO_SHIFT; 1383 else 1384 p1 = 1; 1385 1386 1387 switch (p0) { 1388 case DPLL_CFGCR1_PDIV_2: 1389 p0 = 2; 1390 break; 1391 case DPLL_CFGCR1_PDIV_3: 1392 p0 = 3; 1393 break; 1394 case DPLL_CFGCR1_PDIV_5: 1395 p0 = 5; 1396 break; 1397 case DPLL_CFGCR1_PDIV_7: 1398 p0 = 7; 1399 break; 1400 } 1401 1402 switch (p2) { 1403 case DPLL_CFGCR1_KDIV_1: 1404 p2 = 1; 1405 break; 1406 case DPLL_CFGCR1_KDIV_2: 1407 p2 = 2; 1408 break; 1409 case DPLL_CFGCR1_KDIV_3: 1410 p2 = 3; 1411 break; 1412 } 1413 1414 ref_clock = cnl_hdmi_pll_ref_clock(dev_priv); 1415 1416 dco_freq = (pll_state->cfgcr0 & DPLL_CFGCR0_DCO_INTEGER_MASK) 1417 * ref_clock; 1418 1419 dco_freq += (((pll_state->cfgcr0 & DPLL_CFGCR0_DCO_FRACTION_MASK) >> 1420 DPLL_CFGCR0_DCO_FRACTION_SHIFT) * ref_clock) / 0x8000; 1421 1422 if (WARN_ON(p0 == 0 || p1 == 0 || p2 == 0)) 1423 return 0; 1424 1425 return dco_freq / (p0 * p1 * p2 * 5); 1426 } 1427 1428 static int icl_calc_tbt_pll_link(struct drm_i915_private *dev_priv, 1429 enum port port) 1430 { 1431 u32 val = I915_READ(DDI_CLK_SEL(port)) & DDI_CLK_SEL_MASK; 1432 1433 switch (val) { 1434 case DDI_CLK_SEL_NONE: 1435 return 0; 1436 case DDI_CLK_SEL_TBT_162: 1437 return 162000; 1438 case DDI_CLK_SEL_TBT_270: 1439 return 270000; 1440 case DDI_CLK_SEL_TBT_540: 1441 return 540000; 1442 case DDI_CLK_SEL_TBT_810: 1443 return 810000; 1444 default: 1445 MISSING_CASE(val); 1446 return 0; 1447 } 1448 } 1449 1450 static int icl_calc_mg_pll_link(struct drm_i915_private *dev_priv, 1451 const struct intel_dpll_hw_state *pll_state) 1452 { 1453 u32 m1, m2_int, m2_frac, div1, div2, ref_clock; 1454 u64 tmp; 1455 1456 ref_clock = dev_priv->cdclk.hw.ref; 1457 1458 if (INTEL_GEN(dev_priv) >= 12) { 1459 m1 = pll_state->mg_pll_div0 & DKL_PLL_DIV0_FBPREDIV_MASK; 1460 m1 = m1 >> DKL_PLL_DIV0_FBPREDIV_SHIFT; 1461 m2_int = pll_state->mg_pll_div0 & DKL_PLL_DIV0_FBDIV_INT_MASK; 1462 1463 if (pll_state->mg_pll_bias & DKL_PLL_BIAS_FRAC_EN_H) { 1464 m2_frac = pll_state->mg_pll_bias & 1465 DKL_PLL_BIAS_FBDIV_FRAC_MASK; 1466 m2_frac = m2_frac >> DKL_PLL_BIAS_FBDIV_SHIFT; 1467 } else { 1468 m2_frac = 0; 1469 } 1470 } else { 1471 m1 = pll_state->mg_pll_div1 & MG_PLL_DIV1_FBPREDIV_MASK; 1472 m2_int = pll_state->mg_pll_div0 & MG_PLL_DIV0_FBDIV_INT_MASK; 1473 1474 if (pll_state->mg_pll_div0 & MG_PLL_DIV0_FRACNEN_H) { 1475 m2_frac = pll_state->mg_pll_div0 & 1476 MG_PLL_DIV0_FBDIV_FRAC_MASK; 1477 m2_frac = m2_frac >> MG_PLL_DIV0_FBDIV_FRAC_SHIFT; 1478 } else { 1479 m2_frac = 0; 1480 } 1481 } 1482 1483 switch (pll_state->mg_clktop2_hsclkctl & 1484 MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK) { 1485 case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_2: 1486 div1 = 2; 1487 break; 1488 case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_3: 1489 div1 = 3; 1490 break; 1491 case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_5: 1492 div1 = 5; 1493 break; 1494 case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_7: 1495 div1 = 7; 1496 break; 1497 default: 1498 MISSING_CASE(pll_state->mg_clktop2_hsclkctl); 1499 return 0; 1500 } 1501 1502 div2 = (pll_state->mg_clktop2_hsclkctl & 1503 MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_MASK) >> 1504 MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_SHIFT; 1505 1506 /* div2 value of 0 is same as 1 means no div */ 1507 if (div2 == 0) 1508 div2 = 1; 1509 1510 /* 1511 * Adjust the original formula to delay the division by 2^22 in order to 1512 * minimize possible rounding errors. 1513 */ 1514 tmp = (u64)m1 * m2_int * ref_clock + 1515 (((u64)m1 * m2_frac * ref_clock) >> 22); 1516 tmp = div_u64(tmp, 5 * div1 * div2); 1517 1518 return tmp; 1519 } 1520 1521 static void ddi_dotclock_get(struct intel_crtc_state *pipe_config) 1522 { 1523 int dotclock; 1524 1525 if (pipe_config->has_pch_encoder) 1526 dotclock = intel_dotclock_calculate(pipe_config->port_clock, 1527 &pipe_config->fdi_m_n); 1528 else if (intel_crtc_has_dp_encoder(pipe_config)) 1529 dotclock = intel_dotclock_calculate(pipe_config->port_clock, 1530 &pipe_config->dp_m_n); 1531 else if (pipe_config->has_hdmi_sink && pipe_config->pipe_bpp > 24) 1532 dotclock = pipe_config->port_clock * 24 / pipe_config->pipe_bpp; 1533 else 1534 dotclock = pipe_config->port_clock; 1535 1536 if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 && 1537 !intel_crtc_has_dp_encoder(pipe_config)) 1538 dotclock *= 2; 1539 1540 if (pipe_config->pixel_multiplier) 1541 dotclock /= pipe_config->pixel_multiplier; 1542 1543 pipe_config->hw.adjusted_mode.crtc_clock = dotclock; 1544 } 1545 1546 static void icl_ddi_clock_get(struct intel_encoder *encoder, 1547 struct intel_crtc_state *pipe_config) 1548 { 1549 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1550 struct intel_dpll_hw_state *pll_state = &pipe_config->dpll_hw_state; 1551 enum port port = encoder->port; 1552 enum phy phy = intel_port_to_phy(dev_priv, port); 1553 int link_clock; 1554 1555 if (intel_phy_is_combo(dev_priv, phy)) { 1556 link_clock = cnl_calc_wrpll_link(dev_priv, pll_state); 1557 } else { 1558 enum intel_dpll_id pll_id = intel_get_shared_dpll_id(dev_priv, 1559 pipe_config->shared_dpll); 1560 1561 if (pll_id == DPLL_ID_ICL_TBTPLL) 1562 link_clock = icl_calc_tbt_pll_link(dev_priv, port); 1563 else 1564 link_clock = icl_calc_mg_pll_link(dev_priv, pll_state); 1565 } 1566 1567 pipe_config->port_clock = link_clock; 1568 1569 ddi_dotclock_get(pipe_config); 1570 } 1571 1572 static void cnl_ddi_clock_get(struct intel_encoder *encoder, 1573 struct intel_crtc_state *pipe_config) 1574 { 1575 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1576 struct intel_dpll_hw_state *pll_state = &pipe_config->dpll_hw_state; 1577 int link_clock; 1578 1579 if (pll_state->cfgcr0 & DPLL_CFGCR0_HDMI_MODE) { 1580 link_clock = cnl_calc_wrpll_link(dev_priv, pll_state); 1581 } else { 1582 link_clock = pll_state->cfgcr0 & DPLL_CFGCR0_LINK_RATE_MASK; 1583 1584 switch (link_clock) { 1585 case DPLL_CFGCR0_LINK_RATE_810: 1586 link_clock = 81000; 1587 break; 1588 case DPLL_CFGCR0_LINK_RATE_1080: 1589 link_clock = 108000; 1590 break; 1591 case DPLL_CFGCR0_LINK_RATE_1350: 1592 link_clock = 135000; 1593 break; 1594 case DPLL_CFGCR0_LINK_RATE_1620: 1595 link_clock = 162000; 1596 break; 1597 case DPLL_CFGCR0_LINK_RATE_2160: 1598 link_clock = 216000; 1599 break; 1600 case DPLL_CFGCR0_LINK_RATE_2700: 1601 link_clock = 270000; 1602 break; 1603 case DPLL_CFGCR0_LINK_RATE_3240: 1604 link_clock = 324000; 1605 break; 1606 case DPLL_CFGCR0_LINK_RATE_4050: 1607 link_clock = 405000; 1608 break; 1609 default: 1610 WARN(1, "Unsupported link rate\n"); 1611 break; 1612 } 1613 link_clock *= 2; 1614 } 1615 1616 pipe_config->port_clock = link_clock; 1617 1618 ddi_dotclock_get(pipe_config); 1619 } 1620 1621 static void skl_ddi_clock_get(struct intel_encoder *encoder, 1622 struct intel_crtc_state *pipe_config) 1623 { 1624 struct intel_dpll_hw_state *pll_state = &pipe_config->dpll_hw_state; 1625 int link_clock; 1626 1627 /* 1628 * ctrl1 register is already shifted for each pll, just use 0 to get 1629 * the internal shift for each field 1630 */ 1631 if (pll_state->ctrl1 & DPLL_CTRL1_HDMI_MODE(0)) { 1632 link_clock = skl_calc_wrpll_link(pll_state); 1633 } else { 1634 link_clock = pll_state->ctrl1 & DPLL_CTRL1_LINK_RATE_MASK(0); 1635 link_clock >>= DPLL_CTRL1_LINK_RATE_SHIFT(0); 1636 1637 switch (link_clock) { 1638 case DPLL_CTRL1_LINK_RATE_810: 1639 link_clock = 81000; 1640 break; 1641 case DPLL_CTRL1_LINK_RATE_1080: 1642 link_clock = 108000; 1643 break; 1644 case DPLL_CTRL1_LINK_RATE_1350: 1645 link_clock = 135000; 1646 break; 1647 case DPLL_CTRL1_LINK_RATE_1620: 1648 link_clock = 162000; 1649 break; 1650 case DPLL_CTRL1_LINK_RATE_2160: 1651 link_clock = 216000; 1652 break; 1653 case DPLL_CTRL1_LINK_RATE_2700: 1654 link_clock = 270000; 1655 break; 1656 default: 1657 WARN(1, "Unsupported link rate\n"); 1658 break; 1659 } 1660 link_clock *= 2; 1661 } 1662 1663 pipe_config->port_clock = link_clock; 1664 1665 ddi_dotclock_get(pipe_config); 1666 } 1667 1668 static void hsw_ddi_clock_get(struct intel_encoder *encoder, 1669 struct intel_crtc_state *pipe_config) 1670 { 1671 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1672 int link_clock = 0; 1673 u32 val, pll; 1674 1675 val = hsw_pll_to_ddi_pll_sel(pipe_config->shared_dpll); 1676 switch (val & PORT_CLK_SEL_MASK) { 1677 case PORT_CLK_SEL_LCPLL_810: 1678 link_clock = 81000; 1679 break; 1680 case PORT_CLK_SEL_LCPLL_1350: 1681 link_clock = 135000; 1682 break; 1683 case PORT_CLK_SEL_LCPLL_2700: 1684 link_clock = 270000; 1685 break; 1686 case PORT_CLK_SEL_WRPLL1: 1687 link_clock = hsw_ddi_calc_wrpll_link(dev_priv, WRPLL_CTL(0)); 1688 break; 1689 case PORT_CLK_SEL_WRPLL2: 1690 link_clock = hsw_ddi_calc_wrpll_link(dev_priv, WRPLL_CTL(1)); 1691 break; 1692 case PORT_CLK_SEL_SPLL: 1693 pll = I915_READ(SPLL_CTL) & SPLL_FREQ_MASK; 1694 if (pll == SPLL_FREQ_810MHz) 1695 link_clock = 81000; 1696 else if (pll == SPLL_FREQ_1350MHz) 1697 link_clock = 135000; 1698 else if (pll == SPLL_FREQ_2700MHz) 1699 link_clock = 270000; 1700 else { 1701 WARN(1, "bad spll freq\n"); 1702 return; 1703 } 1704 break; 1705 default: 1706 WARN(1, "bad port clock sel\n"); 1707 return; 1708 } 1709 1710 pipe_config->port_clock = link_clock * 2; 1711 1712 ddi_dotclock_get(pipe_config); 1713 } 1714 1715 static int bxt_calc_pll_link(const struct intel_dpll_hw_state *pll_state) 1716 { 1717 struct dpll clock; 1718 1719 clock.m1 = 2; 1720 clock.m2 = (pll_state->pll0 & PORT_PLL_M2_MASK) << 22; 1721 if (pll_state->pll3 & PORT_PLL_M2_FRAC_ENABLE) 1722 clock.m2 |= pll_state->pll2 & PORT_PLL_M2_FRAC_MASK; 1723 clock.n = (pll_state->pll1 & PORT_PLL_N_MASK) >> PORT_PLL_N_SHIFT; 1724 clock.p1 = (pll_state->ebb0 & PORT_PLL_P1_MASK) >> PORT_PLL_P1_SHIFT; 1725 clock.p2 = (pll_state->ebb0 & PORT_PLL_P2_MASK) >> PORT_PLL_P2_SHIFT; 1726 1727 return chv_calc_dpll_params(100000, &clock); 1728 } 1729 1730 static void bxt_ddi_clock_get(struct intel_encoder *encoder, 1731 struct intel_crtc_state *pipe_config) 1732 { 1733 pipe_config->port_clock = 1734 bxt_calc_pll_link(&pipe_config->dpll_hw_state); 1735 1736 ddi_dotclock_get(pipe_config); 1737 } 1738 1739 static void intel_ddi_clock_get(struct intel_encoder *encoder, 1740 struct intel_crtc_state *pipe_config) 1741 { 1742 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1743 1744 if (INTEL_GEN(dev_priv) >= 11) 1745 icl_ddi_clock_get(encoder, pipe_config); 1746 else if (IS_CANNONLAKE(dev_priv)) 1747 cnl_ddi_clock_get(encoder, pipe_config); 1748 else if (IS_GEN9_LP(dev_priv)) 1749 bxt_ddi_clock_get(encoder, pipe_config); 1750 else if (IS_GEN9_BC(dev_priv)) 1751 skl_ddi_clock_get(encoder, pipe_config); 1752 else if (INTEL_GEN(dev_priv) <= 8) 1753 hsw_ddi_clock_get(encoder, pipe_config); 1754 } 1755 1756 void intel_ddi_set_dp_msa(const struct intel_crtc_state *crtc_state, 1757 const struct drm_connector_state *conn_state) 1758 { 1759 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1760 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1761 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 1762 u32 temp; 1763 1764 if (!intel_crtc_has_dp_encoder(crtc_state)) 1765 return; 1766 1767 WARN_ON(transcoder_is_dsi(cpu_transcoder)); 1768 1769 temp = DP_MSA_MISC_SYNC_CLOCK; 1770 1771 switch (crtc_state->pipe_bpp) { 1772 case 18: 1773 temp |= DP_MSA_MISC_6_BPC; 1774 break; 1775 case 24: 1776 temp |= DP_MSA_MISC_8_BPC; 1777 break; 1778 case 30: 1779 temp |= DP_MSA_MISC_10_BPC; 1780 break; 1781 case 36: 1782 temp |= DP_MSA_MISC_12_BPC; 1783 break; 1784 default: 1785 MISSING_CASE(crtc_state->pipe_bpp); 1786 break; 1787 } 1788 1789 /* nonsense combination */ 1790 WARN_ON(crtc_state->limited_color_range && 1791 crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB); 1792 1793 if (crtc_state->limited_color_range) 1794 temp |= DP_MSA_MISC_COLOR_CEA_RGB; 1795 1796 /* 1797 * As per DP 1.2 spec section 2.3.4.3 while sending 1798 * YCBCR 444 signals we should program MSA MISC1/0 fields with 1799 * colorspace information. 1800 */ 1801 if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) 1802 temp |= DP_MSA_MISC_COLOR_YCBCR_444_BT709; 1803 1804 /* 1805 * As per DP 1.4a spec section 2.2.4.3 [MSA Field for Indication 1806 * of Color Encoding Format and Content Color Gamut] while sending 1807 * YCBCR 420, HDR BT.2020 signals we should program MSA MISC1 fields 1808 * which indicate VSC SDP for the Pixel Encoding/Colorimetry Format. 1809 */ 1810 if (intel_dp_needs_vsc_sdp(crtc_state, conn_state)) 1811 temp |= DP_MSA_MISC_COLOR_VSC_SDP; 1812 1813 I915_WRITE(TRANS_MSA_MISC(cpu_transcoder), temp); 1814 } 1815 1816 /* 1817 * Returns the TRANS_DDI_FUNC_CTL value based on CRTC state. 1818 * 1819 * Only intended to be used by intel_ddi_enable_transcoder_func() and 1820 * intel_ddi_config_transcoder_func(). 1821 */ 1822 static u32 1823 intel_ddi_transcoder_func_reg_val_get(const struct intel_crtc_state *crtc_state) 1824 { 1825 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1826 struct intel_encoder *encoder = intel_ddi_get_crtc_encoder(crtc); 1827 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1828 enum pipe pipe = crtc->pipe; 1829 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 1830 enum port port = encoder->port; 1831 u32 temp; 1832 1833 /* Enable TRANS_DDI_FUNC_CTL for the pipe to work in HDMI mode */ 1834 temp = TRANS_DDI_FUNC_ENABLE; 1835 if (INTEL_GEN(dev_priv) >= 12) 1836 temp |= TGL_TRANS_DDI_SELECT_PORT(port); 1837 else 1838 temp |= TRANS_DDI_SELECT_PORT(port); 1839 1840 switch (crtc_state->pipe_bpp) { 1841 case 18: 1842 temp |= TRANS_DDI_BPC_6; 1843 break; 1844 case 24: 1845 temp |= TRANS_DDI_BPC_8; 1846 break; 1847 case 30: 1848 temp |= TRANS_DDI_BPC_10; 1849 break; 1850 case 36: 1851 temp |= TRANS_DDI_BPC_12; 1852 break; 1853 default: 1854 BUG(); 1855 } 1856 1857 if (crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC) 1858 temp |= TRANS_DDI_PVSYNC; 1859 if (crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC) 1860 temp |= TRANS_DDI_PHSYNC; 1861 1862 if (cpu_transcoder == TRANSCODER_EDP) { 1863 switch (pipe) { 1864 case PIPE_A: 1865 /* On Haswell, can only use the always-on power well for 1866 * eDP when not using the panel fitter, and when not 1867 * using motion blur mitigation (which we don't 1868 * support). */ 1869 if (crtc_state->pch_pfit.force_thru) 1870 temp |= TRANS_DDI_EDP_INPUT_A_ONOFF; 1871 else 1872 temp |= TRANS_DDI_EDP_INPUT_A_ON; 1873 break; 1874 case PIPE_B: 1875 temp |= TRANS_DDI_EDP_INPUT_B_ONOFF; 1876 break; 1877 case PIPE_C: 1878 temp |= TRANS_DDI_EDP_INPUT_C_ONOFF; 1879 break; 1880 default: 1881 BUG(); 1882 break; 1883 } 1884 } 1885 1886 if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) { 1887 if (crtc_state->has_hdmi_sink) 1888 temp |= TRANS_DDI_MODE_SELECT_HDMI; 1889 else 1890 temp |= TRANS_DDI_MODE_SELECT_DVI; 1891 1892 if (crtc_state->hdmi_scrambling) 1893 temp |= TRANS_DDI_HDMI_SCRAMBLING; 1894 if (crtc_state->hdmi_high_tmds_clock_ratio) 1895 temp |= TRANS_DDI_HIGH_TMDS_CHAR_RATE; 1896 } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) { 1897 temp |= TRANS_DDI_MODE_SELECT_FDI; 1898 temp |= (crtc_state->fdi_lanes - 1) << 1; 1899 } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) { 1900 temp |= TRANS_DDI_MODE_SELECT_DP_MST; 1901 temp |= DDI_PORT_WIDTH(crtc_state->lane_count); 1902 1903 if (INTEL_GEN(dev_priv) >= 12) { 1904 enum transcoder master; 1905 1906 master = crtc_state->mst_master_transcoder; 1907 WARN_ON(master == INVALID_TRANSCODER); 1908 temp |= TRANS_DDI_MST_TRANSPORT_SELECT(master); 1909 } 1910 } else { 1911 temp |= TRANS_DDI_MODE_SELECT_DP_SST; 1912 temp |= DDI_PORT_WIDTH(crtc_state->lane_count); 1913 } 1914 1915 return temp; 1916 } 1917 1918 void intel_ddi_enable_transcoder_func(const struct intel_crtc_state *crtc_state) 1919 { 1920 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1921 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1922 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 1923 u32 temp; 1924 1925 temp = intel_ddi_transcoder_func_reg_val_get(crtc_state); 1926 if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) 1927 temp |= TRANS_DDI_DP_VC_PAYLOAD_ALLOC; 1928 I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp); 1929 } 1930 1931 /* 1932 * Same as intel_ddi_enable_transcoder_func(), but it does not set the enable 1933 * bit. 1934 */ 1935 static void 1936 intel_ddi_config_transcoder_func(const struct intel_crtc_state *crtc_state) 1937 { 1938 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1939 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1940 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 1941 u32 temp; 1942 1943 temp = intel_ddi_transcoder_func_reg_val_get(crtc_state); 1944 temp &= ~TRANS_DDI_FUNC_ENABLE; 1945 I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp); 1946 } 1947 1948 void intel_ddi_disable_transcoder_func(const struct intel_crtc_state *crtc_state) 1949 { 1950 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1951 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1952 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 1953 u32 val; 1954 1955 val = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); 1956 val &= ~TRANS_DDI_FUNC_ENABLE; 1957 1958 if (INTEL_GEN(dev_priv) >= 12) { 1959 if (!intel_dp_mst_is_master_trans(crtc_state)) 1960 val &= ~TGL_TRANS_DDI_PORT_MASK; 1961 } else { 1962 val &= ~TRANS_DDI_PORT_MASK; 1963 } 1964 I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), val); 1965 1966 if (dev_priv->quirks & QUIRK_INCREASE_DDI_DISABLED_TIME && 1967 intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) { 1968 DRM_DEBUG_KMS("Quirk Increase DDI disabled time\n"); 1969 /* Quirk time at 100ms for reliable operation */ 1970 msleep(100); 1971 } 1972 } 1973 1974 int intel_ddi_toggle_hdcp_signalling(struct intel_encoder *intel_encoder, 1975 bool enable) 1976 { 1977 struct drm_device *dev = intel_encoder->base.dev; 1978 struct drm_i915_private *dev_priv = to_i915(dev); 1979 intel_wakeref_t wakeref; 1980 enum pipe pipe = 0; 1981 int ret = 0; 1982 u32 tmp; 1983 1984 wakeref = intel_display_power_get_if_enabled(dev_priv, 1985 intel_encoder->power_domain); 1986 if (WARN_ON(!wakeref)) 1987 return -ENXIO; 1988 1989 if (WARN_ON(!intel_encoder->get_hw_state(intel_encoder, &pipe))) { 1990 ret = -EIO; 1991 goto out; 1992 } 1993 1994 tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe)); 1995 if (enable) 1996 tmp |= TRANS_DDI_HDCP_SIGNALLING; 1997 else 1998 tmp &= ~TRANS_DDI_HDCP_SIGNALLING; 1999 I915_WRITE(TRANS_DDI_FUNC_CTL(pipe), tmp); 2000 out: 2001 intel_display_power_put(dev_priv, intel_encoder->power_domain, wakeref); 2002 return ret; 2003 } 2004 2005 bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector) 2006 { 2007 struct drm_device *dev = intel_connector->base.dev; 2008 struct drm_i915_private *dev_priv = to_i915(dev); 2009 struct intel_encoder *encoder = intel_connector->encoder; 2010 int type = intel_connector->base.connector_type; 2011 enum port port = encoder->port; 2012 enum transcoder cpu_transcoder; 2013 intel_wakeref_t wakeref; 2014 enum pipe pipe = 0; 2015 u32 tmp; 2016 bool ret; 2017 2018 wakeref = intel_display_power_get_if_enabled(dev_priv, 2019 encoder->power_domain); 2020 if (!wakeref) 2021 return false; 2022 2023 if (!encoder->get_hw_state(encoder, &pipe)) { 2024 ret = false; 2025 goto out; 2026 } 2027 2028 if (HAS_TRANSCODER_EDP(dev_priv) && port == PORT_A) 2029 cpu_transcoder = TRANSCODER_EDP; 2030 else 2031 cpu_transcoder = (enum transcoder) pipe; 2032 2033 tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); 2034 2035 switch (tmp & TRANS_DDI_MODE_SELECT_MASK) { 2036 case TRANS_DDI_MODE_SELECT_HDMI: 2037 case TRANS_DDI_MODE_SELECT_DVI: 2038 ret = type == DRM_MODE_CONNECTOR_HDMIA; 2039 break; 2040 2041 case TRANS_DDI_MODE_SELECT_DP_SST: 2042 ret = type == DRM_MODE_CONNECTOR_eDP || 2043 type == DRM_MODE_CONNECTOR_DisplayPort; 2044 break; 2045 2046 case TRANS_DDI_MODE_SELECT_DP_MST: 2047 /* if the transcoder is in MST state then 2048 * connector isn't connected */ 2049 ret = false; 2050 break; 2051 2052 case TRANS_DDI_MODE_SELECT_FDI: 2053 ret = type == DRM_MODE_CONNECTOR_VGA; 2054 break; 2055 2056 default: 2057 ret = false; 2058 break; 2059 } 2060 2061 out: 2062 intel_display_power_put(dev_priv, encoder->power_domain, wakeref); 2063 2064 return ret; 2065 } 2066 2067 static void intel_ddi_get_encoder_pipes(struct intel_encoder *encoder, 2068 u8 *pipe_mask, bool *is_dp_mst) 2069 { 2070 struct drm_device *dev = encoder->base.dev; 2071 struct drm_i915_private *dev_priv = to_i915(dev); 2072 enum port port = encoder->port; 2073 intel_wakeref_t wakeref; 2074 enum pipe p; 2075 u32 tmp; 2076 u8 mst_pipe_mask; 2077 2078 *pipe_mask = 0; 2079 *is_dp_mst = false; 2080 2081 wakeref = intel_display_power_get_if_enabled(dev_priv, 2082 encoder->power_domain); 2083 if (!wakeref) 2084 return; 2085 2086 tmp = I915_READ(DDI_BUF_CTL(port)); 2087 if (!(tmp & DDI_BUF_CTL_ENABLE)) 2088 goto out; 2089 2090 if (HAS_TRANSCODER_EDP(dev_priv) && port == PORT_A) { 2091 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP)); 2092 2093 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) { 2094 default: 2095 MISSING_CASE(tmp & TRANS_DDI_EDP_INPUT_MASK); 2096 /* fallthrough */ 2097 case TRANS_DDI_EDP_INPUT_A_ON: 2098 case TRANS_DDI_EDP_INPUT_A_ONOFF: 2099 *pipe_mask = BIT(PIPE_A); 2100 break; 2101 case TRANS_DDI_EDP_INPUT_B_ONOFF: 2102 *pipe_mask = BIT(PIPE_B); 2103 break; 2104 case TRANS_DDI_EDP_INPUT_C_ONOFF: 2105 *pipe_mask = BIT(PIPE_C); 2106 break; 2107 } 2108 2109 goto out; 2110 } 2111 2112 mst_pipe_mask = 0; 2113 for_each_pipe(dev_priv, p) { 2114 enum transcoder cpu_transcoder = (enum transcoder)p; 2115 unsigned int port_mask, ddi_select; 2116 intel_wakeref_t trans_wakeref; 2117 2118 trans_wakeref = intel_display_power_get_if_enabled(dev_priv, 2119 POWER_DOMAIN_TRANSCODER(cpu_transcoder)); 2120 if (!trans_wakeref) 2121 continue; 2122 2123 if (INTEL_GEN(dev_priv) >= 12) { 2124 port_mask = TGL_TRANS_DDI_PORT_MASK; 2125 ddi_select = TGL_TRANS_DDI_SELECT_PORT(port); 2126 } else { 2127 port_mask = TRANS_DDI_PORT_MASK; 2128 ddi_select = TRANS_DDI_SELECT_PORT(port); 2129 } 2130 2131 tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); 2132 intel_display_power_put(dev_priv, POWER_DOMAIN_TRANSCODER(cpu_transcoder), 2133 trans_wakeref); 2134 2135 if ((tmp & port_mask) != ddi_select) 2136 continue; 2137 2138 if ((tmp & TRANS_DDI_MODE_SELECT_MASK) == 2139 TRANS_DDI_MODE_SELECT_DP_MST) 2140 mst_pipe_mask |= BIT(p); 2141 2142 *pipe_mask |= BIT(p); 2143 } 2144 2145 if (!*pipe_mask) 2146 DRM_DEBUG_KMS("No pipe for [ENCODER:%d:%s] found\n", 2147 encoder->base.base.id, encoder->base.name); 2148 2149 if (!mst_pipe_mask && hweight8(*pipe_mask) > 1) { 2150 DRM_DEBUG_KMS("Multiple pipes for [ENCODER:%d:%s] (pipe_mask %02x)\n", 2151 encoder->base.base.id, encoder->base.name, 2152 *pipe_mask); 2153 *pipe_mask = BIT(ffs(*pipe_mask) - 1); 2154 } 2155 2156 if (mst_pipe_mask && mst_pipe_mask != *pipe_mask) 2157 DRM_DEBUG_KMS("Conflicting MST and non-MST state for [ENCODER:%d:%s] (pipe_mask %02x mst_pipe_mask %02x)\n", 2158 encoder->base.base.id, encoder->base.name, 2159 *pipe_mask, mst_pipe_mask); 2160 else 2161 *is_dp_mst = mst_pipe_mask; 2162 2163 out: 2164 if (*pipe_mask && IS_GEN9_LP(dev_priv)) { 2165 tmp = I915_READ(BXT_PHY_CTL(port)); 2166 if ((tmp & (BXT_PHY_CMNLANE_POWERDOWN_ACK | 2167 BXT_PHY_LANE_POWERDOWN_ACK | 2168 BXT_PHY_LANE_ENABLED)) != BXT_PHY_LANE_ENABLED) 2169 DRM_ERROR("[ENCODER:%d:%s] enabled but PHY powered down? " 2170 "(PHY_CTL %08x)\n", encoder->base.base.id, 2171 encoder->base.name, tmp); 2172 } 2173 2174 intel_display_power_put(dev_priv, encoder->power_domain, wakeref); 2175 } 2176 2177 bool intel_ddi_get_hw_state(struct intel_encoder *encoder, 2178 enum pipe *pipe) 2179 { 2180 u8 pipe_mask; 2181 bool is_mst; 2182 2183 intel_ddi_get_encoder_pipes(encoder, &pipe_mask, &is_mst); 2184 2185 if (is_mst || !pipe_mask) 2186 return false; 2187 2188 *pipe = ffs(pipe_mask) - 1; 2189 2190 return true; 2191 } 2192 2193 static inline enum intel_display_power_domain 2194 intel_ddi_main_link_aux_domain(struct intel_digital_port *dig_port) 2195 { 2196 /* CNL+ HW requires corresponding AUX IOs to be powered up for PSR with 2197 * DC states enabled at the same time, while for driver initiated AUX 2198 * transfers we need the same AUX IOs to be powered but with DC states 2199 * disabled. Accordingly use the AUX power domain here which leaves DC 2200 * states enabled. 2201 * However, for non-A AUX ports the corresponding non-EDP transcoders 2202 * would have already enabled power well 2 and DC_OFF. This means we can 2203 * acquire a wider POWER_DOMAIN_AUX_{B,C,D,F} reference instead of a 2204 * specific AUX_IO reference without powering up any extra wells. 2205 * Note that PSR is enabled only on Port A even though this function 2206 * returns the correct domain for other ports too. 2207 */ 2208 return dig_port->aux_ch == AUX_CH_A ? POWER_DOMAIN_AUX_IO_A : 2209 intel_aux_power_domain(dig_port); 2210 } 2211 2212 static void intel_ddi_get_power_domains(struct intel_encoder *encoder, 2213 struct intel_crtc_state *crtc_state) 2214 { 2215 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2216 struct intel_digital_port *dig_port; 2217 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 2218 2219 /* 2220 * TODO: Add support for MST encoders. Atm, the following should never 2221 * happen since fake-MST encoders don't set their get_power_domains() 2222 * hook. 2223 */ 2224 if (WARN_ON(intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST))) 2225 return; 2226 2227 dig_port = enc_to_dig_port(encoder); 2228 intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain); 2229 2230 /* 2231 * AUX power is only needed for (e)DP mode, and for HDMI mode on TC 2232 * ports. 2233 */ 2234 if (intel_crtc_has_dp_encoder(crtc_state) || 2235 intel_phy_is_tc(dev_priv, phy)) 2236 intel_display_power_get(dev_priv, 2237 intel_ddi_main_link_aux_domain(dig_port)); 2238 2239 /* 2240 * VDSC power is needed when DSC is enabled 2241 */ 2242 if (crtc_state->dsc.compression_enable) 2243 intel_display_power_get(dev_priv, 2244 intel_dsc_power_domain(crtc_state)); 2245 } 2246 2247 void intel_ddi_enable_pipe_clock(const struct intel_crtc_state *crtc_state) 2248 { 2249 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 2250 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 2251 struct intel_encoder *encoder = intel_ddi_get_crtc_encoder(crtc); 2252 enum port port = encoder->port; 2253 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 2254 2255 if (cpu_transcoder != TRANSCODER_EDP) { 2256 if (INTEL_GEN(dev_priv) >= 12) 2257 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder), 2258 TGL_TRANS_CLK_SEL_PORT(port)); 2259 else 2260 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder), 2261 TRANS_CLK_SEL_PORT(port)); 2262 } 2263 } 2264 2265 void intel_ddi_disable_pipe_clock(const struct intel_crtc_state *crtc_state) 2266 { 2267 struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); 2268 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 2269 2270 if (cpu_transcoder != TRANSCODER_EDP) { 2271 if (INTEL_GEN(dev_priv) >= 12) 2272 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder), 2273 TGL_TRANS_CLK_SEL_DISABLED); 2274 else 2275 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder), 2276 TRANS_CLK_SEL_DISABLED); 2277 } 2278 } 2279 2280 static void _skl_ddi_set_iboost(struct drm_i915_private *dev_priv, 2281 enum port port, u8 iboost) 2282 { 2283 u32 tmp; 2284 2285 tmp = I915_READ(DISPIO_CR_TX_BMU_CR0); 2286 tmp &= ~(BALANCE_LEG_MASK(port) | BALANCE_LEG_DISABLE(port)); 2287 if (iboost) 2288 tmp |= iboost << BALANCE_LEG_SHIFT(port); 2289 else 2290 tmp |= BALANCE_LEG_DISABLE(port); 2291 I915_WRITE(DISPIO_CR_TX_BMU_CR0, tmp); 2292 } 2293 2294 static void skl_ddi_set_iboost(struct intel_encoder *encoder, 2295 int level, enum intel_output_type type) 2296 { 2297 struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); 2298 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2299 enum port port = encoder->port; 2300 u8 iboost; 2301 2302 if (type == INTEL_OUTPUT_HDMI) 2303 iboost = dev_priv->vbt.ddi_port_info[port].hdmi_boost_level; 2304 else 2305 iboost = dev_priv->vbt.ddi_port_info[port].dp_boost_level; 2306 2307 if (iboost == 0) { 2308 const struct ddi_buf_trans *ddi_translations; 2309 int n_entries; 2310 2311 if (type == INTEL_OUTPUT_HDMI) 2312 ddi_translations = intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries); 2313 else if (type == INTEL_OUTPUT_EDP) 2314 ddi_translations = intel_ddi_get_buf_trans_edp(dev_priv, port, &n_entries); 2315 else 2316 ddi_translations = intel_ddi_get_buf_trans_dp(dev_priv, port, &n_entries); 2317 2318 if (WARN_ON_ONCE(!ddi_translations)) 2319 return; 2320 if (WARN_ON_ONCE(level >= n_entries)) 2321 level = n_entries - 1; 2322 2323 iboost = ddi_translations[level].i_boost; 2324 } 2325 2326 /* Make sure that the requested I_boost is valid */ 2327 if (iboost && iboost != 0x1 && iboost != 0x3 && iboost != 0x7) { 2328 DRM_ERROR("Invalid I_boost value %u\n", iboost); 2329 return; 2330 } 2331 2332 _skl_ddi_set_iboost(dev_priv, port, iboost); 2333 2334 if (port == PORT_A && intel_dig_port->max_lanes == 4) 2335 _skl_ddi_set_iboost(dev_priv, PORT_E, iboost); 2336 } 2337 2338 static void bxt_ddi_vswing_sequence(struct intel_encoder *encoder, 2339 int level, enum intel_output_type type) 2340 { 2341 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2342 const struct bxt_ddi_buf_trans *ddi_translations; 2343 enum port port = encoder->port; 2344 int n_entries; 2345 2346 if (type == INTEL_OUTPUT_HDMI) 2347 ddi_translations = bxt_get_buf_trans_hdmi(dev_priv, &n_entries); 2348 else if (type == INTEL_OUTPUT_EDP) 2349 ddi_translations = bxt_get_buf_trans_edp(dev_priv, &n_entries); 2350 else 2351 ddi_translations = bxt_get_buf_trans_dp(dev_priv, &n_entries); 2352 2353 if (WARN_ON_ONCE(!ddi_translations)) 2354 return; 2355 if (WARN_ON_ONCE(level >= n_entries)) 2356 level = n_entries - 1; 2357 2358 bxt_ddi_phy_set_signal_level(dev_priv, port, 2359 ddi_translations[level].margin, 2360 ddi_translations[level].scale, 2361 ddi_translations[level].enable, 2362 ddi_translations[level].deemphasis); 2363 } 2364 2365 u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder) 2366 { 2367 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2368 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 2369 enum port port = encoder->port; 2370 enum phy phy = intel_port_to_phy(dev_priv, port); 2371 int n_entries; 2372 2373 if (INTEL_GEN(dev_priv) >= 12) { 2374 if (intel_phy_is_combo(dev_priv, phy)) 2375 icl_get_combo_buf_trans(dev_priv, encoder->type, 2376 intel_dp->link_rate, &n_entries); 2377 else 2378 n_entries = ARRAY_SIZE(tgl_dkl_phy_dp_ddi_trans); 2379 } else if (INTEL_GEN(dev_priv) == 11) { 2380 if (intel_phy_is_combo(dev_priv, phy)) 2381 icl_get_combo_buf_trans(dev_priv, encoder->type, 2382 intel_dp->link_rate, &n_entries); 2383 else 2384 n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations); 2385 } else if (IS_CANNONLAKE(dev_priv)) { 2386 if (encoder->type == INTEL_OUTPUT_EDP) 2387 cnl_get_buf_trans_edp(dev_priv, &n_entries); 2388 else 2389 cnl_get_buf_trans_dp(dev_priv, &n_entries); 2390 } else if (IS_GEN9_LP(dev_priv)) { 2391 if (encoder->type == INTEL_OUTPUT_EDP) 2392 bxt_get_buf_trans_edp(dev_priv, &n_entries); 2393 else 2394 bxt_get_buf_trans_dp(dev_priv, &n_entries); 2395 } else { 2396 if (encoder->type == INTEL_OUTPUT_EDP) 2397 intel_ddi_get_buf_trans_edp(dev_priv, port, &n_entries); 2398 else 2399 intel_ddi_get_buf_trans_dp(dev_priv, port, &n_entries); 2400 } 2401 2402 if (WARN_ON(n_entries < 1)) 2403 n_entries = 1; 2404 if (WARN_ON(n_entries > ARRAY_SIZE(index_to_dp_signal_levels))) 2405 n_entries = ARRAY_SIZE(index_to_dp_signal_levels); 2406 2407 return index_to_dp_signal_levels[n_entries - 1] & 2408 DP_TRAIN_VOLTAGE_SWING_MASK; 2409 } 2410 2411 /* 2412 * We assume that the full set of pre-emphasis values can be 2413 * used on all DDI platforms. Should that change we need to 2414 * rethink this code. 2415 */ 2416 u8 intel_ddi_dp_pre_emphasis_max(struct intel_encoder *encoder, u8 voltage_swing) 2417 { 2418 switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { 2419 case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: 2420 return DP_TRAIN_PRE_EMPH_LEVEL_3; 2421 case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: 2422 return DP_TRAIN_PRE_EMPH_LEVEL_2; 2423 case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: 2424 return DP_TRAIN_PRE_EMPH_LEVEL_1; 2425 case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: 2426 default: 2427 return DP_TRAIN_PRE_EMPH_LEVEL_0; 2428 } 2429 } 2430 2431 static void cnl_ddi_vswing_program(struct intel_encoder *encoder, 2432 int level, enum intel_output_type type) 2433 { 2434 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2435 const struct cnl_ddi_buf_trans *ddi_translations; 2436 enum port port = encoder->port; 2437 int n_entries, ln; 2438 u32 val; 2439 2440 if (type == INTEL_OUTPUT_HDMI) 2441 ddi_translations = cnl_get_buf_trans_hdmi(dev_priv, &n_entries); 2442 else if (type == INTEL_OUTPUT_EDP) 2443 ddi_translations = cnl_get_buf_trans_edp(dev_priv, &n_entries); 2444 else 2445 ddi_translations = cnl_get_buf_trans_dp(dev_priv, &n_entries); 2446 2447 if (WARN_ON_ONCE(!ddi_translations)) 2448 return; 2449 if (WARN_ON_ONCE(level >= n_entries)) 2450 level = n_entries - 1; 2451 2452 /* Set PORT_TX_DW5 Scaling Mode Sel to 010b. */ 2453 val = I915_READ(CNL_PORT_TX_DW5_LN0(port)); 2454 val &= ~SCALING_MODE_SEL_MASK; 2455 val |= SCALING_MODE_SEL(2); 2456 I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val); 2457 2458 /* Program PORT_TX_DW2 */ 2459 val = I915_READ(CNL_PORT_TX_DW2_LN0(port)); 2460 val &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK | 2461 RCOMP_SCALAR_MASK); 2462 val |= SWING_SEL_UPPER(ddi_translations[level].dw2_swing_sel); 2463 val |= SWING_SEL_LOWER(ddi_translations[level].dw2_swing_sel); 2464 /* Rcomp scalar is fixed as 0x98 for every table entry */ 2465 val |= RCOMP_SCALAR(0x98); 2466 I915_WRITE(CNL_PORT_TX_DW2_GRP(port), val); 2467 2468 /* Program PORT_TX_DW4 */ 2469 /* We cannot write to GRP. It would overrite individual loadgen */ 2470 for (ln = 0; ln < 4; ln++) { 2471 val = I915_READ(CNL_PORT_TX_DW4_LN(ln, port)); 2472 val &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK | 2473 CURSOR_COEFF_MASK); 2474 val |= POST_CURSOR_1(ddi_translations[level].dw4_post_cursor_1); 2475 val |= POST_CURSOR_2(ddi_translations[level].dw4_post_cursor_2); 2476 val |= CURSOR_COEFF(ddi_translations[level].dw4_cursor_coeff); 2477 I915_WRITE(CNL_PORT_TX_DW4_LN(ln, port), val); 2478 } 2479 2480 /* Program PORT_TX_DW5 */ 2481 /* All DW5 values are fixed for every table entry */ 2482 val = I915_READ(CNL_PORT_TX_DW5_LN0(port)); 2483 val &= ~RTERM_SELECT_MASK; 2484 val |= RTERM_SELECT(6); 2485 val |= TAP3_DISABLE; 2486 I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val); 2487 2488 /* Program PORT_TX_DW7 */ 2489 val = I915_READ(CNL_PORT_TX_DW7_LN0(port)); 2490 val &= ~N_SCALAR_MASK; 2491 val |= N_SCALAR(ddi_translations[level].dw7_n_scalar); 2492 I915_WRITE(CNL_PORT_TX_DW7_GRP(port), val); 2493 } 2494 2495 static void cnl_ddi_vswing_sequence(struct intel_encoder *encoder, 2496 int level, enum intel_output_type type) 2497 { 2498 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2499 enum port port = encoder->port; 2500 int width, rate, ln; 2501 u32 val; 2502 2503 if (type == INTEL_OUTPUT_HDMI) { 2504 width = 4; 2505 rate = 0; /* Rate is always < than 6GHz for HDMI */ 2506 } else { 2507 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 2508 2509 width = intel_dp->lane_count; 2510 rate = intel_dp->link_rate; 2511 } 2512 2513 /* 2514 * 1. If port type is eDP or DP, 2515 * set PORT_PCS_DW1 cmnkeeper_enable to 1b, 2516 * else clear to 0b. 2517 */ 2518 val = I915_READ(CNL_PORT_PCS_DW1_LN0(port)); 2519 if (type != INTEL_OUTPUT_HDMI) 2520 val |= COMMON_KEEPER_EN; 2521 else 2522 val &= ~COMMON_KEEPER_EN; 2523 I915_WRITE(CNL_PORT_PCS_DW1_GRP(port), val); 2524 2525 /* 2. Program loadgen select */ 2526 /* 2527 * Program PORT_TX_DW4_LN depending on Bit rate and used lanes 2528 * <= 6 GHz and 4 lanes (LN0=0, LN1=1, LN2=1, LN3=1) 2529 * <= 6 GHz and 1,2 lanes (LN0=0, LN1=1, LN2=1, LN3=0) 2530 * > 6 GHz (LN0=0, LN1=0, LN2=0, LN3=0) 2531 */ 2532 for (ln = 0; ln <= 3; ln++) { 2533 val = I915_READ(CNL_PORT_TX_DW4_LN(ln, port)); 2534 val &= ~LOADGEN_SELECT; 2535 2536 if ((rate <= 600000 && width == 4 && ln >= 1) || 2537 (rate <= 600000 && width < 4 && (ln == 1 || ln == 2))) { 2538 val |= LOADGEN_SELECT; 2539 } 2540 I915_WRITE(CNL_PORT_TX_DW4_LN(ln, port), val); 2541 } 2542 2543 /* 3. Set PORT_CL_DW5 SUS Clock Config to 11b */ 2544 val = I915_READ(CNL_PORT_CL1CM_DW5); 2545 val |= SUS_CLOCK_CONFIG; 2546 I915_WRITE(CNL_PORT_CL1CM_DW5, val); 2547 2548 /* 4. Clear training enable to change swing values */ 2549 val = I915_READ(CNL_PORT_TX_DW5_LN0(port)); 2550 val &= ~TX_TRAINING_EN; 2551 I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val); 2552 2553 /* 5. Program swing and de-emphasis */ 2554 cnl_ddi_vswing_program(encoder, level, type); 2555 2556 /* 6. Set training enable to trigger update */ 2557 val = I915_READ(CNL_PORT_TX_DW5_LN0(port)); 2558 val |= TX_TRAINING_EN; 2559 I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val); 2560 } 2561 2562 static void icl_ddi_combo_vswing_program(struct drm_i915_private *dev_priv, 2563 u32 level, enum phy phy, int type, 2564 int rate) 2565 { 2566 const struct cnl_ddi_buf_trans *ddi_translations = NULL; 2567 u32 n_entries, val; 2568 int ln; 2569 2570 ddi_translations = icl_get_combo_buf_trans(dev_priv, type, rate, 2571 &n_entries); 2572 if (!ddi_translations) 2573 return; 2574 2575 if (level >= n_entries) { 2576 DRM_DEBUG_KMS("DDI translation not found for level %d. Using %d instead.", level, n_entries - 1); 2577 level = n_entries - 1; 2578 } 2579 2580 /* Set PORT_TX_DW5 */ 2581 val = I915_READ(ICL_PORT_TX_DW5_LN0(phy)); 2582 val &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK | 2583 TAP2_DISABLE | TAP3_DISABLE); 2584 val |= SCALING_MODE_SEL(0x2); 2585 val |= RTERM_SELECT(0x6); 2586 val |= TAP3_DISABLE; 2587 I915_WRITE(ICL_PORT_TX_DW5_GRP(phy), val); 2588 2589 /* Program PORT_TX_DW2 */ 2590 val = I915_READ(ICL_PORT_TX_DW2_LN0(phy)); 2591 val &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK | 2592 RCOMP_SCALAR_MASK); 2593 val |= SWING_SEL_UPPER(ddi_translations[level].dw2_swing_sel); 2594 val |= SWING_SEL_LOWER(ddi_translations[level].dw2_swing_sel); 2595 /* Program Rcomp scalar for every table entry */ 2596 val |= RCOMP_SCALAR(0x98); 2597 I915_WRITE(ICL_PORT_TX_DW2_GRP(phy), val); 2598 2599 /* Program PORT_TX_DW4 */ 2600 /* We cannot write to GRP. It would overwrite individual loadgen. */ 2601 for (ln = 0; ln <= 3; ln++) { 2602 val = I915_READ(ICL_PORT_TX_DW4_LN(ln, phy)); 2603 val &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK | 2604 CURSOR_COEFF_MASK); 2605 val |= POST_CURSOR_1(ddi_translations[level].dw4_post_cursor_1); 2606 val |= POST_CURSOR_2(ddi_translations[level].dw4_post_cursor_2); 2607 val |= CURSOR_COEFF(ddi_translations[level].dw4_cursor_coeff); 2608 I915_WRITE(ICL_PORT_TX_DW4_LN(ln, phy), val); 2609 } 2610 2611 /* Program PORT_TX_DW7 */ 2612 val = I915_READ(ICL_PORT_TX_DW7_LN0(phy)); 2613 val &= ~N_SCALAR_MASK; 2614 val |= N_SCALAR(ddi_translations[level].dw7_n_scalar); 2615 I915_WRITE(ICL_PORT_TX_DW7_GRP(phy), val); 2616 } 2617 2618 static void icl_combo_phy_ddi_vswing_sequence(struct intel_encoder *encoder, 2619 u32 level, 2620 enum intel_output_type type) 2621 { 2622 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2623 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 2624 int width = 0; 2625 int rate = 0; 2626 u32 val; 2627 int ln = 0; 2628 2629 if (type == INTEL_OUTPUT_HDMI) { 2630 width = 4; 2631 /* Rate is always < than 6GHz for HDMI */ 2632 } else { 2633 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 2634 2635 width = intel_dp->lane_count; 2636 rate = intel_dp->link_rate; 2637 } 2638 2639 /* 2640 * 1. If port type is eDP or DP, 2641 * set PORT_PCS_DW1 cmnkeeper_enable to 1b, 2642 * else clear to 0b. 2643 */ 2644 val = I915_READ(ICL_PORT_PCS_DW1_LN0(phy)); 2645 if (type == INTEL_OUTPUT_HDMI) 2646 val &= ~COMMON_KEEPER_EN; 2647 else 2648 val |= COMMON_KEEPER_EN; 2649 I915_WRITE(ICL_PORT_PCS_DW1_GRP(phy), val); 2650 2651 /* 2. Program loadgen select */ 2652 /* 2653 * Program PORT_TX_DW4_LN depending on Bit rate and used lanes 2654 * <= 6 GHz and 4 lanes (LN0=0, LN1=1, LN2=1, LN3=1) 2655 * <= 6 GHz and 1,2 lanes (LN0=0, LN1=1, LN2=1, LN3=0) 2656 * > 6 GHz (LN0=0, LN1=0, LN2=0, LN3=0) 2657 */ 2658 for (ln = 0; ln <= 3; ln++) { 2659 val = I915_READ(ICL_PORT_TX_DW4_LN(ln, phy)); 2660 val &= ~LOADGEN_SELECT; 2661 2662 if ((rate <= 600000 && width == 4 && ln >= 1) || 2663 (rate <= 600000 && width < 4 && (ln == 1 || ln == 2))) { 2664 val |= LOADGEN_SELECT; 2665 } 2666 I915_WRITE(ICL_PORT_TX_DW4_LN(ln, phy), val); 2667 } 2668 2669 /* 3. Set PORT_CL_DW5 SUS Clock Config to 11b */ 2670 val = I915_READ(ICL_PORT_CL_DW5(phy)); 2671 val |= SUS_CLOCK_CONFIG; 2672 I915_WRITE(ICL_PORT_CL_DW5(phy), val); 2673 2674 /* 4. Clear training enable to change swing values */ 2675 val = I915_READ(ICL_PORT_TX_DW5_LN0(phy)); 2676 val &= ~TX_TRAINING_EN; 2677 I915_WRITE(ICL_PORT_TX_DW5_GRP(phy), val); 2678 2679 /* 5. Program swing and de-emphasis */ 2680 icl_ddi_combo_vswing_program(dev_priv, level, phy, type, rate); 2681 2682 /* 6. Set training enable to trigger update */ 2683 val = I915_READ(ICL_PORT_TX_DW5_LN0(phy)); 2684 val |= TX_TRAINING_EN; 2685 I915_WRITE(ICL_PORT_TX_DW5_GRP(phy), val); 2686 } 2687 2688 static void icl_mg_phy_ddi_vswing_sequence(struct intel_encoder *encoder, 2689 int link_clock, 2690 u32 level) 2691 { 2692 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2693 enum tc_port tc_port = intel_port_to_tc(dev_priv, encoder->port); 2694 const struct icl_mg_phy_ddi_buf_trans *ddi_translations; 2695 u32 n_entries, val; 2696 int ln; 2697 2698 n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations); 2699 ddi_translations = icl_mg_phy_ddi_translations; 2700 /* The table does not have values for level 3 and level 9. */ 2701 if (level >= n_entries || level == 3 || level == 9) { 2702 DRM_DEBUG_KMS("DDI translation not found for level %d. Using %d instead.", 2703 level, n_entries - 2); 2704 level = n_entries - 2; 2705 } 2706 2707 /* Set MG_TX_LINK_PARAMS cri_use_fs32 to 0. */ 2708 for (ln = 0; ln < 2; ln++) { 2709 val = I915_READ(MG_TX1_LINK_PARAMS(ln, tc_port)); 2710 val &= ~CRI_USE_FS32; 2711 I915_WRITE(MG_TX1_LINK_PARAMS(ln, tc_port), val); 2712 2713 val = I915_READ(MG_TX2_LINK_PARAMS(ln, tc_port)); 2714 val &= ~CRI_USE_FS32; 2715 I915_WRITE(MG_TX2_LINK_PARAMS(ln, tc_port), val); 2716 } 2717 2718 /* Program MG_TX_SWINGCTRL with values from vswing table */ 2719 for (ln = 0; ln < 2; ln++) { 2720 val = I915_READ(MG_TX1_SWINGCTRL(ln, tc_port)); 2721 val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK; 2722 val |= CRI_TXDEEMPH_OVERRIDE_17_12( 2723 ddi_translations[level].cri_txdeemph_override_17_12); 2724 I915_WRITE(MG_TX1_SWINGCTRL(ln, tc_port), val); 2725 2726 val = I915_READ(MG_TX2_SWINGCTRL(ln, tc_port)); 2727 val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK; 2728 val |= CRI_TXDEEMPH_OVERRIDE_17_12( 2729 ddi_translations[level].cri_txdeemph_override_17_12); 2730 I915_WRITE(MG_TX2_SWINGCTRL(ln, tc_port), val); 2731 } 2732 2733 /* Program MG_TX_DRVCTRL with values from vswing table */ 2734 for (ln = 0; ln < 2; ln++) { 2735 val = I915_READ(MG_TX1_DRVCTRL(ln, tc_port)); 2736 val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK | 2737 CRI_TXDEEMPH_OVERRIDE_5_0_MASK); 2738 val |= CRI_TXDEEMPH_OVERRIDE_5_0( 2739 ddi_translations[level].cri_txdeemph_override_5_0) | 2740 CRI_TXDEEMPH_OVERRIDE_11_6( 2741 ddi_translations[level].cri_txdeemph_override_11_6) | 2742 CRI_TXDEEMPH_OVERRIDE_EN; 2743 I915_WRITE(MG_TX1_DRVCTRL(ln, tc_port), val); 2744 2745 val = I915_READ(MG_TX2_DRVCTRL(ln, tc_port)); 2746 val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK | 2747 CRI_TXDEEMPH_OVERRIDE_5_0_MASK); 2748 val |= CRI_TXDEEMPH_OVERRIDE_5_0( 2749 ddi_translations[level].cri_txdeemph_override_5_0) | 2750 CRI_TXDEEMPH_OVERRIDE_11_6( 2751 ddi_translations[level].cri_txdeemph_override_11_6) | 2752 CRI_TXDEEMPH_OVERRIDE_EN; 2753 I915_WRITE(MG_TX2_DRVCTRL(ln, tc_port), val); 2754 2755 /* FIXME: Program CRI_LOADGEN_SEL after the spec is updated */ 2756 } 2757 2758 /* 2759 * Program MG_CLKHUB<LN, port being used> with value from frequency table 2760 * In case of Legacy mode on MG PHY, both TX1 and TX2 enabled so use the 2761 * values from table for which TX1 and TX2 enabled. 2762 */ 2763 for (ln = 0; ln < 2; ln++) { 2764 val = I915_READ(MG_CLKHUB(ln, tc_port)); 2765 if (link_clock < 300000) 2766 val |= CFG_LOW_RATE_LKREN_EN; 2767 else 2768 val &= ~CFG_LOW_RATE_LKREN_EN; 2769 I915_WRITE(MG_CLKHUB(ln, tc_port), val); 2770 } 2771 2772 /* Program the MG_TX_DCC<LN, port being used> based on the link frequency */ 2773 for (ln = 0; ln < 2; ln++) { 2774 val = I915_READ(MG_TX1_DCC(ln, tc_port)); 2775 val &= ~CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK; 2776 if (link_clock <= 500000) { 2777 val &= ~CFG_AMI_CK_DIV_OVERRIDE_EN; 2778 } else { 2779 val |= CFG_AMI_CK_DIV_OVERRIDE_EN | 2780 CFG_AMI_CK_DIV_OVERRIDE_VAL(1); 2781 } 2782 I915_WRITE(MG_TX1_DCC(ln, tc_port), val); 2783 2784 val = I915_READ(MG_TX2_DCC(ln, tc_port)); 2785 val &= ~CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK; 2786 if (link_clock <= 500000) { 2787 val &= ~CFG_AMI_CK_DIV_OVERRIDE_EN; 2788 } else { 2789 val |= CFG_AMI_CK_DIV_OVERRIDE_EN | 2790 CFG_AMI_CK_DIV_OVERRIDE_VAL(1); 2791 } 2792 I915_WRITE(MG_TX2_DCC(ln, tc_port), val); 2793 } 2794 2795 /* Program MG_TX_PISO_READLOAD with values from vswing table */ 2796 for (ln = 0; ln < 2; ln++) { 2797 val = I915_READ(MG_TX1_PISO_READLOAD(ln, tc_port)); 2798 val |= CRI_CALCINIT; 2799 I915_WRITE(MG_TX1_PISO_READLOAD(ln, tc_port), val); 2800 2801 val = I915_READ(MG_TX2_PISO_READLOAD(ln, tc_port)); 2802 val |= CRI_CALCINIT; 2803 I915_WRITE(MG_TX2_PISO_READLOAD(ln, tc_port), val); 2804 } 2805 } 2806 2807 static void icl_ddi_vswing_sequence(struct intel_encoder *encoder, 2808 int link_clock, 2809 u32 level, 2810 enum intel_output_type type) 2811 { 2812 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2813 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 2814 2815 if (intel_phy_is_combo(dev_priv, phy)) 2816 icl_combo_phy_ddi_vswing_sequence(encoder, level, type); 2817 else 2818 icl_mg_phy_ddi_vswing_sequence(encoder, link_clock, level); 2819 } 2820 2821 static void 2822 tgl_dkl_phy_ddi_vswing_sequence(struct intel_encoder *encoder, int link_clock, 2823 u32 level) 2824 { 2825 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2826 enum tc_port tc_port = intel_port_to_tc(dev_priv, encoder->port); 2827 const struct tgl_dkl_phy_ddi_buf_trans *ddi_translations; 2828 u32 n_entries, val, ln, dpcnt_mask, dpcnt_val; 2829 2830 if (encoder->type == INTEL_OUTPUT_HDMI) { 2831 n_entries = ARRAY_SIZE(tgl_dkl_phy_hdmi_ddi_trans); 2832 ddi_translations = tgl_dkl_phy_hdmi_ddi_trans; 2833 } else { 2834 n_entries = ARRAY_SIZE(tgl_dkl_phy_dp_ddi_trans); 2835 ddi_translations = tgl_dkl_phy_dp_ddi_trans; 2836 } 2837 2838 if (level >= n_entries) 2839 level = n_entries - 1; 2840 2841 dpcnt_mask = (DKL_TX_PRESHOOT_COEFF_MASK | 2842 DKL_TX_DE_EMPAHSIS_COEFF_MASK | 2843 DKL_TX_VSWING_CONTROL_MASK); 2844 dpcnt_val = DKL_TX_VSWING_CONTROL(ddi_translations[level].dkl_vswing_control); 2845 dpcnt_val |= DKL_TX_DE_EMPHASIS_COEFF(ddi_translations[level].dkl_de_emphasis_control); 2846 dpcnt_val |= DKL_TX_PRESHOOT_COEFF(ddi_translations[level].dkl_preshoot_control); 2847 2848 for (ln = 0; ln < 2; ln++) { 2849 I915_WRITE(HIP_INDEX_REG(tc_port), HIP_INDEX_VAL(tc_port, ln)); 2850 2851 I915_WRITE(DKL_TX_PMD_LANE_SUS(tc_port), 0); 2852 2853 /* All the registers are RMW */ 2854 val = I915_READ(DKL_TX_DPCNTL0(tc_port)); 2855 val &= ~dpcnt_mask; 2856 val |= dpcnt_val; 2857 I915_WRITE(DKL_TX_DPCNTL0(tc_port), val); 2858 2859 val = I915_READ(DKL_TX_DPCNTL1(tc_port)); 2860 val &= ~dpcnt_mask; 2861 val |= dpcnt_val; 2862 I915_WRITE(DKL_TX_DPCNTL1(tc_port), val); 2863 2864 val = I915_READ(DKL_TX_DPCNTL2(tc_port)); 2865 val &= ~DKL_TX_DP20BITMODE; 2866 I915_WRITE(DKL_TX_DPCNTL2(tc_port), val); 2867 } 2868 } 2869 2870 static void tgl_ddi_vswing_sequence(struct intel_encoder *encoder, 2871 int link_clock, 2872 u32 level, 2873 enum intel_output_type type) 2874 { 2875 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2876 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 2877 2878 if (intel_phy_is_combo(dev_priv, phy)) 2879 icl_combo_phy_ddi_vswing_sequence(encoder, level, type); 2880 else 2881 tgl_dkl_phy_ddi_vswing_sequence(encoder, link_clock, level); 2882 } 2883 2884 static u32 translate_signal_level(int signal_levels) 2885 { 2886 int i; 2887 2888 for (i = 0; i < ARRAY_SIZE(index_to_dp_signal_levels); i++) { 2889 if (index_to_dp_signal_levels[i] == signal_levels) 2890 return i; 2891 } 2892 2893 WARN(1, "Unsupported voltage swing/pre-emphasis level: 0x%x\n", 2894 signal_levels); 2895 2896 return 0; 2897 } 2898 2899 static u32 intel_ddi_dp_level(struct intel_dp *intel_dp) 2900 { 2901 u8 train_set = intel_dp->train_set[0]; 2902 int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | 2903 DP_TRAIN_PRE_EMPHASIS_MASK); 2904 2905 return translate_signal_level(signal_levels); 2906 } 2907 2908 u32 bxt_signal_levels(struct intel_dp *intel_dp) 2909 { 2910 struct intel_digital_port *dport = dp_to_dig_port(intel_dp); 2911 struct drm_i915_private *dev_priv = to_i915(dport->base.base.dev); 2912 struct intel_encoder *encoder = &dport->base; 2913 int level = intel_ddi_dp_level(intel_dp); 2914 2915 if (INTEL_GEN(dev_priv) >= 12) 2916 tgl_ddi_vswing_sequence(encoder, intel_dp->link_rate, 2917 level, encoder->type); 2918 else if (INTEL_GEN(dev_priv) >= 11) 2919 icl_ddi_vswing_sequence(encoder, intel_dp->link_rate, 2920 level, encoder->type); 2921 else if (IS_CANNONLAKE(dev_priv)) 2922 cnl_ddi_vswing_sequence(encoder, level, encoder->type); 2923 else 2924 bxt_ddi_vswing_sequence(encoder, level, encoder->type); 2925 2926 return 0; 2927 } 2928 2929 u32 ddi_signal_levels(struct intel_dp *intel_dp) 2930 { 2931 struct intel_digital_port *dport = dp_to_dig_port(intel_dp); 2932 struct drm_i915_private *dev_priv = to_i915(dport->base.base.dev); 2933 struct intel_encoder *encoder = &dport->base; 2934 int level = intel_ddi_dp_level(intel_dp); 2935 2936 if (IS_GEN9_BC(dev_priv)) 2937 skl_ddi_set_iboost(encoder, level, encoder->type); 2938 2939 return DDI_BUF_TRANS_SELECT(level); 2940 } 2941 2942 static inline 2943 u32 icl_dpclka_cfgcr0_clk_off(struct drm_i915_private *dev_priv, 2944 enum phy phy) 2945 { 2946 if (intel_phy_is_combo(dev_priv, phy)) { 2947 return ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 2948 } else if (intel_phy_is_tc(dev_priv, phy)) { 2949 enum tc_port tc_port = intel_port_to_tc(dev_priv, 2950 (enum port)phy); 2951 2952 return ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port); 2953 } 2954 2955 return 0; 2956 } 2957 2958 static void icl_map_plls_to_ports(struct intel_encoder *encoder, 2959 const struct intel_crtc_state *crtc_state) 2960 { 2961 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2962 struct intel_shared_dpll *pll = crtc_state->shared_dpll; 2963 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 2964 u32 val; 2965 2966 mutex_lock(&dev_priv->dpll_lock); 2967 2968 val = I915_READ(ICL_DPCLKA_CFGCR0); 2969 WARN_ON((val & icl_dpclka_cfgcr0_clk_off(dev_priv, phy)) == 0); 2970 2971 if (intel_phy_is_combo(dev_priv, phy)) { 2972 /* 2973 * Even though this register references DDIs, note that we 2974 * want to pass the PHY rather than the port (DDI). For 2975 * ICL, port=phy in all cases so it doesn't matter, but for 2976 * EHL the bspec notes the following: 2977 * 2978 * "DDID clock tied to DDIA clock, so DPCLKA_CFGCR0 DDIA 2979 * Clock Select chooses the PLL for both DDIA and DDID and 2980 * drives port A in all cases." 2981 */ 2982 val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy); 2983 val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy); 2984 I915_WRITE(ICL_DPCLKA_CFGCR0, val); 2985 POSTING_READ(ICL_DPCLKA_CFGCR0); 2986 } 2987 2988 val &= ~icl_dpclka_cfgcr0_clk_off(dev_priv, phy); 2989 I915_WRITE(ICL_DPCLKA_CFGCR0, val); 2990 2991 mutex_unlock(&dev_priv->dpll_lock); 2992 } 2993 2994 static void icl_unmap_plls_to_ports(struct intel_encoder *encoder) 2995 { 2996 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2997 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 2998 u32 val; 2999 3000 mutex_lock(&dev_priv->dpll_lock); 3001 3002 val = I915_READ(ICL_DPCLKA_CFGCR0); 3003 val |= icl_dpclka_cfgcr0_clk_off(dev_priv, phy); 3004 I915_WRITE(ICL_DPCLKA_CFGCR0, val); 3005 3006 mutex_unlock(&dev_priv->dpll_lock); 3007 } 3008 3009 static void icl_sanitize_port_clk_off(struct drm_i915_private *dev_priv, 3010 u32 port_mask, bool ddi_clk_needed) 3011 { 3012 enum port port; 3013 u32 val; 3014 3015 val = I915_READ(ICL_DPCLKA_CFGCR0); 3016 for_each_port_masked(port, port_mask) { 3017 enum phy phy = intel_port_to_phy(dev_priv, port); 3018 bool ddi_clk_off = val & icl_dpclka_cfgcr0_clk_off(dev_priv, 3019 phy); 3020 3021 if (ddi_clk_needed == !ddi_clk_off) 3022 continue; 3023 3024 /* 3025 * Punt on the case now where clock is gated, but it would 3026 * be needed by the port. Something else is really broken then. 3027 */ 3028 if (WARN_ON(ddi_clk_needed)) 3029 continue; 3030 3031 DRM_NOTE("PHY %c is disabled/in DSI mode with an ungated DDI clock, gate it\n", 3032 phy_name(phy)); 3033 val |= icl_dpclka_cfgcr0_clk_off(dev_priv, phy); 3034 I915_WRITE(ICL_DPCLKA_CFGCR0, val); 3035 } 3036 } 3037 3038 void icl_sanitize_encoder_pll_mapping(struct intel_encoder *encoder) 3039 { 3040 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3041 u32 port_mask; 3042 bool ddi_clk_needed; 3043 3044 /* 3045 * In case of DP MST, we sanitize the primary encoder only, not the 3046 * virtual ones. 3047 */ 3048 if (encoder->type == INTEL_OUTPUT_DP_MST) 3049 return; 3050 3051 if (!encoder->base.crtc && intel_encoder_is_dp(encoder)) { 3052 u8 pipe_mask; 3053 bool is_mst; 3054 3055 intel_ddi_get_encoder_pipes(encoder, &pipe_mask, &is_mst); 3056 /* 3057 * In the unlikely case that BIOS enables DP in MST mode, just 3058 * warn since our MST HW readout is incomplete. 3059 */ 3060 if (WARN_ON(is_mst)) 3061 return; 3062 } 3063 3064 port_mask = BIT(encoder->port); 3065 ddi_clk_needed = encoder->base.crtc; 3066 3067 if (encoder->type == INTEL_OUTPUT_DSI) { 3068 struct intel_encoder *other_encoder; 3069 3070 port_mask = intel_dsi_encoder_ports(encoder); 3071 /* 3072 * Sanity check that we haven't incorrectly registered another 3073 * encoder using any of the ports of this DSI encoder. 3074 */ 3075 for_each_intel_encoder(&dev_priv->drm, other_encoder) { 3076 if (other_encoder == encoder) 3077 continue; 3078 3079 if (WARN_ON(port_mask & BIT(other_encoder->port))) 3080 return; 3081 } 3082 /* 3083 * For DSI we keep the ddi clocks gated 3084 * except during enable/disable sequence. 3085 */ 3086 ddi_clk_needed = false; 3087 } 3088 3089 icl_sanitize_port_clk_off(dev_priv, port_mask, ddi_clk_needed); 3090 } 3091 3092 static void intel_ddi_clk_select(struct intel_encoder *encoder, 3093 const struct intel_crtc_state *crtc_state) 3094 { 3095 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3096 enum port port = encoder->port; 3097 enum phy phy = intel_port_to_phy(dev_priv, port); 3098 u32 val; 3099 const struct intel_shared_dpll *pll = crtc_state->shared_dpll; 3100 3101 if (WARN_ON(!pll)) 3102 return; 3103 3104 mutex_lock(&dev_priv->dpll_lock); 3105 3106 if (INTEL_GEN(dev_priv) >= 11) { 3107 if (!intel_phy_is_combo(dev_priv, phy)) 3108 I915_WRITE(DDI_CLK_SEL(port), 3109 icl_pll_to_ddi_clk_sel(encoder, crtc_state)); 3110 else if (IS_ELKHARTLAKE(dev_priv) && port >= PORT_C) 3111 /* 3112 * MG does not exist but the programming is required 3113 * to ungate DDIC and DDID 3114 */ 3115 I915_WRITE(DDI_CLK_SEL(port), DDI_CLK_SEL_MG); 3116 } else if (IS_CANNONLAKE(dev_priv)) { 3117 /* Configure DPCLKA_CFGCR0 to map the DPLL to the DDI. */ 3118 val = I915_READ(DPCLKA_CFGCR0); 3119 val &= ~DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port); 3120 val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port); 3121 I915_WRITE(DPCLKA_CFGCR0, val); 3122 3123 /* 3124 * Configure DPCLKA_CFGCR0 to turn on the clock for the DDI. 3125 * This step and the step before must be done with separate 3126 * register writes. 3127 */ 3128 val = I915_READ(DPCLKA_CFGCR0); 3129 val &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port); 3130 I915_WRITE(DPCLKA_CFGCR0, val); 3131 } else if (IS_GEN9_BC(dev_priv)) { 3132 /* DDI -> PLL mapping */ 3133 val = I915_READ(DPLL_CTRL2); 3134 3135 val &= ~(DPLL_CTRL2_DDI_CLK_OFF(port) | 3136 DPLL_CTRL2_DDI_CLK_SEL_MASK(port)); 3137 val |= (DPLL_CTRL2_DDI_CLK_SEL(pll->info->id, port) | 3138 DPLL_CTRL2_DDI_SEL_OVERRIDE(port)); 3139 3140 I915_WRITE(DPLL_CTRL2, val); 3141 3142 } else if (INTEL_GEN(dev_priv) < 9) { 3143 I915_WRITE(PORT_CLK_SEL(port), hsw_pll_to_ddi_pll_sel(pll)); 3144 } 3145 3146 mutex_unlock(&dev_priv->dpll_lock); 3147 } 3148 3149 static void intel_ddi_clk_disable(struct intel_encoder *encoder) 3150 { 3151 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3152 enum port port = encoder->port; 3153 enum phy phy = intel_port_to_phy(dev_priv, port); 3154 3155 if (INTEL_GEN(dev_priv) >= 11) { 3156 if (!intel_phy_is_combo(dev_priv, phy) || 3157 (IS_ELKHARTLAKE(dev_priv) && port >= PORT_C)) 3158 I915_WRITE(DDI_CLK_SEL(port), DDI_CLK_SEL_NONE); 3159 } else if (IS_CANNONLAKE(dev_priv)) { 3160 I915_WRITE(DPCLKA_CFGCR0, I915_READ(DPCLKA_CFGCR0) | 3161 DPCLKA_CFGCR0_DDI_CLK_OFF(port)); 3162 } else if (IS_GEN9_BC(dev_priv)) { 3163 I915_WRITE(DPLL_CTRL2, I915_READ(DPLL_CTRL2) | 3164 DPLL_CTRL2_DDI_CLK_OFF(port)); 3165 } else if (INTEL_GEN(dev_priv) < 9) { 3166 I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE); 3167 } 3168 } 3169 3170 static void 3171 icl_program_mg_dp_mode(struct intel_digital_port *intel_dig_port, 3172 const struct intel_crtc_state *crtc_state) 3173 { 3174 struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); 3175 enum tc_port tc_port = intel_port_to_tc(dev_priv, intel_dig_port->base.port); 3176 u32 ln0, ln1, pin_assignment; 3177 u8 width; 3178 3179 if (intel_dig_port->tc_mode == TC_PORT_TBT_ALT) 3180 return; 3181 3182 if (INTEL_GEN(dev_priv) >= 12) { 3183 I915_WRITE(HIP_INDEX_REG(tc_port), HIP_INDEX_VAL(tc_port, 0x0)); 3184 ln0 = I915_READ(DKL_DP_MODE(tc_port)); 3185 I915_WRITE(HIP_INDEX_REG(tc_port), HIP_INDEX_VAL(tc_port, 0x1)); 3186 ln1 = I915_READ(DKL_DP_MODE(tc_port)); 3187 } else { 3188 ln0 = I915_READ(MG_DP_MODE(0, tc_port)); 3189 ln1 = I915_READ(MG_DP_MODE(1, tc_port)); 3190 } 3191 3192 ln0 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X1_MODE); 3193 ln1 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE); 3194 3195 /* DPPATC */ 3196 pin_assignment = intel_tc_port_get_pin_assignment_mask(intel_dig_port); 3197 width = crtc_state->lane_count; 3198 3199 switch (pin_assignment) { 3200 case 0x0: 3201 WARN_ON(intel_dig_port->tc_mode != TC_PORT_LEGACY); 3202 if (width == 1) { 3203 ln1 |= MG_DP_MODE_CFG_DP_X1_MODE; 3204 } else { 3205 ln0 |= MG_DP_MODE_CFG_DP_X2_MODE; 3206 ln1 |= MG_DP_MODE_CFG_DP_X2_MODE; 3207 } 3208 break; 3209 case 0x1: 3210 if (width == 4) { 3211 ln0 |= MG_DP_MODE_CFG_DP_X2_MODE; 3212 ln1 |= MG_DP_MODE_CFG_DP_X2_MODE; 3213 } 3214 break; 3215 case 0x2: 3216 if (width == 2) { 3217 ln0 |= MG_DP_MODE_CFG_DP_X2_MODE; 3218 ln1 |= MG_DP_MODE_CFG_DP_X2_MODE; 3219 } 3220 break; 3221 case 0x3: 3222 case 0x5: 3223 if (width == 1) { 3224 ln0 |= MG_DP_MODE_CFG_DP_X1_MODE; 3225 ln1 |= MG_DP_MODE_CFG_DP_X1_MODE; 3226 } else { 3227 ln0 |= MG_DP_MODE_CFG_DP_X2_MODE; 3228 ln1 |= MG_DP_MODE_CFG_DP_X2_MODE; 3229 } 3230 break; 3231 case 0x4: 3232 case 0x6: 3233 if (width == 1) { 3234 ln0 |= MG_DP_MODE_CFG_DP_X1_MODE; 3235 ln1 |= MG_DP_MODE_CFG_DP_X1_MODE; 3236 } else { 3237 ln0 |= MG_DP_MODE_CFG_DP_X2_MODE; 3238 ln1 |= MG_DP_MODE_CFG_DP_X2_MODE; 3239 } 3240 break; 3241 default: 3242 MISSING_CASE(pin_assignment); 3243 } 3244 3245 if (INTEL_GEN(dev_priv) >= 12) { 3246 I915_WRITE(HIP_INDEX_REG(tc_port), HIP_INDEX_VAL(tc_port, 0x0)); 3247 I915_WRITE(DKL_DP_MODE(tc_port), ln0); 3248 I915_WRITE(HIP_INDEX_REG(tc_port), HIP_INDEX_VAL(tc_port, 0x1)); 3249 I915_WRITE(DKL_DP_MODE(tc_port), ln1); 3250 } else { 3251 I915_WRITE(MG_DP_MODE(0, tc_port), ln0); 3252 I915_WRITE(MG_DP_MODE(1, tc_port), ln1); 3253 } 3254 } 3255 3256 static void intel_dp_sink_set_fec_ready(struct intel_dp *intel_dp, 3257 const struct intel_crtc_state *crtc_state) 3258 { 3259 if (!crtc_state->fec_enable) 3260 return; 3261 3262 if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_FEC_CONFIGURATION, DP_FEC_READY) <= 0) 3263 DRM_DEBUG_KMS("Failed to set FEC_READY in the sink\n"); 3264 } 3265 3266 static void intel_ddi_enable_fec(struct intel_encoder *encoder, 3267 const struct intel_crtc_state *crtc_state) 3268 { 3269 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3270 struct intel_dp *intel_dp; 3271 u32 val; 3272 3273 if (!crtc_state->fec_enable) 3274 return; 3275 3276 intel_dp = enc_to_intel_dp(encoder); 3277 val = I915_READ(intel_dp->regs.dp_tp_ctl); 3278 val |= DP_TP_CTL_FEC_ENABLE; 3279 I915_WRITE(intel_dp->regs.dp_tp_ctl, val); 3280 3281 if (intel_de_wait_for_set(dev_priv, intel_dp->regs.dp_tp_status, 3282 DP_TP_STATUS_FEC_ENABLE_LIVE, 1)) 3283 DRM_ERROR("Timed out waiting for FEC Enable Status\n"); 3284 } 3285 3286 static void intel_ddi_disable_fec_state(struct intel_encoder *encoder, 3287 const struct intel_crtc_state *crtc_state) 3288 { 3289 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3290 struct intel_dp *intel_dp; 3291 u32 val; 3292 3293 if (!crtc_state->fec_enable) 3294 return; 3295 3296 intel_dp = enc_to_intel_dp(encoder); 3297 val = I915_READ(intel_dp->regs.dp_tp_ctl); 3298 val &= ~DP_TP_CTL_FEC_ENABLE; 3299 I915_WRITE(intel_dp->regs.dp_tp_ctl, val); 3300 POSTING_READ(intel_dp->regs.dp_tp_ctl); 3301 } 3302 3303 static void 3304 tgl_clear_psr2_transcoder_exitline(const struct intel_crtc_state *cstate) 3305 { 3306 struct drm_i915_private *dev_priv = to_i915(cstate->uapi.crtc->dev); 3307 u32 val; 3308 3309 if (!cstate->dc3co_exitline) 3310 return; 3311 3312 val = I915_READ(EXITLINE(cstate->cpu_transcoder)); 3313 val &= ~(EXITLINE_MASK | EXITLINE_ENABLE); 3314 I915_WRITE(EXITLINE(cstate->cpu_transcoder), val); 3315 } 3316 3317 static void 3318 tgl_set_psr2_transcoder_exitline(const struct intel_crtc_state *cstate) 3319 { 3320 u32 val, exit_scanlines; 3321 struct drm_i915_private *dev_priv = to_i915(cstate->uapi.crtc->dev); 3322 3323 if (!cstate->dc3co_exitline) 3324 return; 3325 3326 exit_scanlines = cstate->dc3co_exitline; 3327 exit_scanlines <<= EXITLINE_SHIFT; 3328 val = I915_READ(EXITLINE(cstate->cpu_transcoder)); 3329 val &= ~(EXITLINE_MASK | EXITLINE_ENABLE); 3330 val |= exit_scanlines; 3331 val |= EXITLINE_ENABLE; 3332 I915_WRITE(EXITLINE(cstate->cpu_transcoder), val); 3333 } 3334 3335 static void tgl_dc3co_exitline_compute_config(struct intel_encoder *encoder, 3336 struct intel_crtc_state *cstate) 3337 { 3338 u32 exit_scanlines; 3339 struct drm_i915_private *dev_priv = to_i915(cstate->uapi.crtc->dev); 3340 u32 crtc_vdisplay = cstate->hw.adjusted_mode.crtc_vdisplay; 3341 3342 cstate->dc3co_exitline = 0; 3343 3344 if (!(dev_priv->csr.allowed_dc_mask & DC_STATE_EN_DC3CO)) 3345 return; 3346 3347 /* B.Specs:49196 DC3CO only works with pipeA and DDIA.*/ 3348 if (to_intel_crtc(cstate->uapi.crtc)->pipe != PIPE_A || 3349 encoder->port != PORT_A) 3350 return; 3351 3352 if (!cstate->has_psr2 || !cstate->hw.active) 3353 return; 3354 3355 /* 3356 * DC3CO Exit time 200us B.Spec 49196 3357 * PSR2 transcoder Early Exit scanlines = ROUNDUP(200 / line time) + 1 3358 */ 3359 exit_scanlines = 3360 intel_usecs_to_scanlines(&cstate->hw.adjusted_mode, 200) + 1; 3361 3362 if (WARN_ON(exit_scanlines > crtc_vdisplay)) 3363 return; 3364 3365 cstate->dc3co_exitline = crtc_vdisplay - exit_scanlines; 3366 DRM_DEBUG_KMS("DC3CO exit scanlines %d\n", cstate->dc3co_exitline); 3367 } 3368 3369 static void tgl_dc3co_exitline_get_config(struct intel_crtc_state *crtc_state) 3370 { 3371 u32 val; 3372 struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); 3373 3374 if (INTEL_GEN(dev_priv) < 12) 3375 return; 3376 3377 val = I915_READ(EXITLINE(crtc_state->cpu_transcoder)); 3378 3379 if (val & EXITLINE_ENABLE) 3380 crtc_state->dc3co_exitline = val & EXITLINE_MASK; 3381 } 3382 3383 static void tgl_ddi_pre_enable_dp(struct intel_encoder *encoder, 3384 const struct intel_crtc_state *crtc_state, 3385 const struct drm_connector_state *conn_state) 3386 { 3387 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 3388 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3389 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 3390 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 3391 bool is_mst = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST); 3392 int level = intel_ddi_dp_level(intel_dp); 3393 enum transcoder transcoder = crtc_state->cpu_transcoder; 3394 3395 tgl_set_psr2_transcoder_exitline(crtc_state); 3396 intel_dp_set_link_params(intel_dp, crtc_state->port_clock, 3397 crtc_state->lane_count, is_mst); 3398 3399 intel_dp->regs.dp_tp_ctl = TGL_DP_TP_CTL(transcoder); 3400 intel_dp->regs.dp_tp_status = TGL_DP_TP_STATUS(transcoder); 3401 3402 /* 3403 * 1. Enable Power Wells 3404 * 3405 * This was handled at the beginning of intel_atomic_commit_tail(), 3406 * before we called down into this function. 3407 */ 3408 3409 /* 2. Enable Panel Power if PPS is required */ 3410 intel_edp_panel_on(intel_dp); 3411 3412 /* 3413 * 3. For non-TBT Type-C ports, set FIA lane count 3414 * (DFLEXDPSP.DPX4TXLATC) 3415 * 3416 * This was done before tgl_ddi_pre_enable_dp by 3417 * hsw_crtc_enable()->intel_encoders_pre_pll_enable(). 3418 */ 3419 3420 /* 3421 * 4. Enable the port PLL. 3422 * 3423 * The PLL enabling itself was already done before this function by 3424 * hsw_crtc_enable()->intel_enable_shared_dpll(). We need only 3425 * configure the PLL to port mapping here. 3426 */ 3427 intel_ddi_clk_select(encoder, crtc_state); 3428 3429 /* 5. If IO power is controlled through PWR_WELL_CTL, Enable IO Power */ 3430 if (!intel_phy_is_tc(dev_priv, phy) || 3431 dig_port->tc_mode != TC_PORT_TBT_ALT) 3432 intel_display_power_get(dev_priv, 3433 dig_port->ddi_io_power_domain); 3434 3435 /* 6. Program DP_MODE */ 3436 icl_program_mg_dp_mode(dig_port, crtc_state); 3437 3438 /* 3439 * 7. The rest of the below are substeps under the bspec's "Enable and 3440 * Train Display Port" step. Note that steps that are specific to 3441 * MST will be handled by intel_mst_pre_enable_dp() before/after it 3442 * calls into this function. Also intel_mst_pre_enable_dp() only calls 3443 * us when active_mst_links==0, so any steps designated for "single 3444 * stream or multi-stream master transcoder" can just be performed 3445 * unconditionally here. 3446 */ 3447 3448 /* 3449 * 7.a Configure Transcoder Clock Select to direct the Port clock to the 3450 * Transcoder. 3451 */ 3452 intel_ddi_enable_pipe_clock(crtc_state); 3453 3454 /* 3455 * 7.b Configure TRANS_DDI_FUNC_CTL DDI Select, DDI Mode Select & MST 3456 * Transport Select 3457 */ 3458 intel_ddi_config_transcoder_func(crtc_state); 3459 3460 /* 3461 * 7.c Configure & enable DP_TP_CTL with link training pattern 1 3462 * selected 3463 * 3464 * This will be handled by the intel_dp_start_link_train() farther 3465 * down this function. 3466 */ 3467 3468 /* 7.e Configure voltage swing and related IO settings */ 3469 tgl_ddi_vswing_sequence(encoder, crtc_state->port_clock, level, 3470 encoder->type); 3471 3472 /* 3473 * 7.f Combo PHY: Configure PORT_CL_DW10 Static Power Down to power up 3474 * the used lanes of the DDI. 3475 */ 3476 if (intel_phy_is_combo(dev_priv, phy)) { 3477 bool lane_reversal = 3478 dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL; 3479 3480 intel_combo_phy_power_up_lanes(dev_priv, phy, false, 3481 crtc_state->lane_count, 3482 lane_reversal); 3483 } 3484 3485 /* 3486 * 7.g Configure and enable DDI_BUF_CTL 3487 * 7.h Wait for DDI_BUF_CTL DDI Idle Status = 0b (Not Idle), timeout 3488 * after 500 us. 3489 * 3490 * We only configure what the register value will be here. Actual 3491 * enabling happens during link training farther down. 3492 */ 3493 intel_ddi_init_dp_buf_reg(encoder); 3494 3495 if (!is_mst) 3496 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); 3497 3498 intel_dp_sink_set_decompression_state(intel_dp, crtc_state, true); 3499 /* 3500 * DDI FEC: "anticipates enabling FEC encoding sets the FEC_READY bit 3501 * in the FEC_CONFIGURATION register to 1 before initiating link 3502 * training 3503 */ 3504 intel_dp_sink_set_fec_ready(intel_dp, crtc_state); 3505 3506 /* 3507 * 7.i Follow DisplayPort specification training sequence (see notes for 3508 * failure handling) 3509 * 7.j If DisplayPort multi-stream - Set DP_TP_CTL link training to Idle 3510 * Pattern, wait for 5 idle patterns (DP_TP_STATUS Min_Idles_Sent) 3511 * (timeout after 800 us) 3512 */ 3513 intel_dp_start_link_train(intel_dp); 3514 3515 /* 7.k Set DP_TP_CTL link training to Normal */ 3516 if (!is_trans_port_sync_mode(crtc_state)) 3517 intel_dp_stop_link_train(intel_dp); 3518 3519 /* 7.l Configure and enable FEC if needed */ 3520 intel_ddi_enable_fec(encoder, crtc_state); 3521 intel_dsc_enable(encoder, crtc_state); 3522 } 3523 3524 static void hsw_ddi_pre_enable_dp(struct intel_encoder *encoder, 3525 const struct intel_crtc_state *crtc_state, 3526 const struct drm_connector_state *conn_state) 3527 { 3528 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 3529 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3530 enum port port = encoder->port; 3531 enum phy phy = intel_port_to_phy(dev_priv, port); 3532 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 3533 bool is_mst = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST); 3534 int level = intel_ddi_dp_level(intel_dp); 3535 3536 if (INTEL_GEN(dev_priv) < 11) 3537 WARN_ON(is_mst && (port == PORT_A || port == PORT_E)); 3538 else 3539 WARN_ON(is_mst && port == PORT_A); 3540 3541 intel_dp_set_link_params(intel_dp, crtc_state->port_clock, 3542 crtc_state->lane_count, is_mst); 3543 3544 intel_dp->regs.dp_tp_ctl = DP_TP_CTL(port); 3545 intel_dp->regs.dp_tp_status = DP_TP_STATUS(port); 3546 3547 intel_edp_panel_on(intel_dp); 3548 3549 intel_ddi_clk_select(encoder, crtc_state); 3550 3551 if (!intel_phy_is_tc(dev_priv, phy) || 3552 dig_port->tc_mode != TC_PORT_TBT_ALT) 3553 intel_display_power_get(dev_priv, 3554 dig_port->ddi_io_power_domain); 3555 3556 icl_program_mg_dp_mode(dig_port, crtc_state); 3557 3558 if (INTEL_GEN(dev_priv) >= 11) 3559 icl_ddi_vswing_sequence(encoder, crtc_state->port_clock, 3560 level, encoder->type); 3561 else if (IS_CANNONLAKE(dev_priv)) 3562 cnl_ddi_vswing_sequence(encoder, level, encoder->type); 3563 else if (IS_GEN9_LP(dev_priv)) 3564 bxt_ddi_vswing_sequence(encoder, level, encoder->type); 3565 else 3566 intel_prepare_dp_ddi_buffers(encoder, crtc_state); 3567 3568 if (intel_phy_is_combo(dev_priv, phy)) { 3569 bool lane_reversal = 3570 dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL; 3571 3572 intel_combo_phy_power_up_lanes(dev_priv, phy, false, 3573 crtc_state->lane_count, 3574 lane_reversal); 3575 } 3576 3577 intel_ddi_init_dp_buf_reg(encoder); 3578 if (!is_mst) 3579 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); 3580 intel_dp_sink_set_decompression_state(intel_dp, crtc_state, 3581 true); 3582 intel_dp_sink_set_fec_ready(intel_dp, crtc_state); 3583 intel_dp_start_link_train(intel_dp); 3584 if ((port != PORT_A || INTEL_GEN(dev_priv) >= 9) && 3585 !is_trans_port_sync_mode(crtc_state)) 3586 intel_dp_stop_link_train(intel_dp); 3587 3588 intel_ddi_enable_fec(encoder, crtc_state); 3589 3590 if (!is_mst) 3591 intel_ddi_enable_pipe_clock(crtc_state); 3592 3593 intel_dsc_enable(encoder, crtc_state); 3594 } 3595 3596 static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder, 3597 const struct intel_crtc_state *crtc_state, 3598 const struct drm_connector_state *conn_state) 3599 { 3600 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3601 3602 if (INTEL_GEN(dev_priv) >= 12) 3603 tgl_ddi_pre_enable_dp(encoder, crtc_state, conn_state); 3604 else 3605 hsw_ddi_pre_enable_dp(encoder, crtc_state, conn_state); 3606 3607 /* MST will call a setting of MSA after an allocating of Virtual Channel 3608 * from MST encoder pre_enable callback. 3609 */ 3610 if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) 3611 intel_ddi_set_dp_msa(crtc_state, conn_state); 3612 } 3613 3614 static void intel_ddi_pre_enable_hdmi(struct intel_encoder *encoder, 3615 const struct intel_crtc_state *crtc_state, 3616 const struct drm_connector_state *conn_state) 3617 { 3618 struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); 3619 struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi; 3620 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3621 enum port port = encoder->port; 3622 int level = intel_ddi_hdmi_level(dev_priv, port); 3623 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 3624 3625 intel_dp_dual_mode_set_tmds_output(intel_hdmi, true); 3626 intel_ddi_clk_select(encoder, crtc_state); 3627 3628 intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain); 3629 3630 icl_program_mg_dp_mode(dig_port, crtc_state); 3631 3632 if (INTEL_GEN(dev_priv) >= 12) 3633 tgl_ddi_vswing_sequence(encoder, crtc_state->port_clock, 3634 level, INTEL_OUTPUT_HDMI); 3635 else if (INTEL_GEN(dev_priv) == 11) 3636 icl_ddi_vswing_sequence(encoder, crtc_state->port_clock, 3637 level, INTEL_OUTPUT_HDMI); 3638 else if (IS_CANNONLAKE(dev_priv)) 3639 cnl_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI); 3640 else if (IS_GEN9_LP(dev_priv)) 3641 bxt_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI); 3642 else 3643 intel_prepare_hdmi_ddi_buffers(encoder, level); 3644 3645 if (IS_GEN9_BC(dev_priv)) 3646 skl_ddi_set_iboost(encoder, level, INTEL_OUTPUT_HDMI); 3647 3648 intel_ddi_enable_pipe_clock(crtc_state); 3649 3650 intel_dig_port->set_infoframes(encoder, 3651 crtc_state->has_infoframe, 3652 crtc_state, conn_state); 3653 } 3654 3655 static void intel_ddi_pre_enable(struct intel_encoder *encoder, 3656 const struct intel_crtc_state *crtc_state, 3657 const struct drm_connector_state *conn_state) 3658 { 3659 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 3660 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 3661 enum pipe pipe = crtc->pipe; 3662 3663 /* 3664 * When called from DP MST code: 3665 * - conn_state will be NULL 3666 * - encoder will be the main encoder (ie. mst->primary) 3667 * - the main connector associated with this port 3668 * won't be active or linked to a crtc 3669 * - crtc_state will be the state of the first stream to 3670 * be activated on this port, and it may not be the same 3671 * stream that will be deactivated last, but each stream 3672 * should have a state that is identical when it comes to 3673 * the DP link parameteres 3674 */ 3675 3676 WARN_ON(crtc_state->has_pch_encoder); 3677 3678 if (INTEL_GEN(dev_priv) >= 11) 3679 icl_map_plls_to_ports(encoder, crtc_state); 3680 3681 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true); 3682 3683 if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) { 3684 intel_ddi_pre_enable_hdmi(encoder, crtc_state, conn_state); 3685 } else { 3686 struct intel_lspcon *lspcon = 3687 enc_to_intel_lspcon(encoder); 3688 3689 intel_ddi_pre_enable_dp(encoder, crtc_state, conn_state); 3690 if (lspcon->active) { 3691 struct intel_digital_port *dig_port = 3692 enc_to_dig_port(encoder); 3693 3694 dig_port->set_infoframes(encoder, 3695 crtc_state->has_infoframe, 3696 crtc_state, conn_state); 3697 } 3698 } 3699 } 3700 3701 static void intel_disable_ddi_buf(struct intel_encoder *encoder, 3702 const struct intel_crtc_state *crtc_state) 3703 { 3704 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3705 enum port port = encoder->port; 3706 bool wait = false; 3707 u32 val; 3708 3709 val = I915_READ(DDI_BUF_CTL(port)); 3710 if (val & DDI_BUF_CTL_ENABLE) { 3711 val &= ~DDI_BUF_CTL_ENABLE; 3712 I915_WRITE(DDI_BUF_CTL(port), val); 3713 wait = true; 3714 } 3715 3716 if (intel_crtc_has_dp_encoder(crtc_state)) { 3717 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 3718 3719 val = I915_READ(intel_dp->regs.dp_tp_ctl); 3720 val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); 3721 val |= DP_TP_CTL_LINK_TRAIN_PAT1; 3722 I915_WRITE(intel_dp->regs.dp_tp_ctl, val); 3723 } 3724 3725 /* Disable FEC in DP Sink */ 3726 intel_ddi_disable_fec_state(encoder, crtc_state); 3727 3728 if (wait) 3729 intel_wait_ddi_buf_idle(dev_priv, port); 3730 } 3731 3732 static void intel_ddi_post_disable_dp(struct intel_encoder *encoder, 3733 const struct intel_crtc_state *old_crtc_state, 3734 const struct drm_connector_state *old_conn_state) 3735 { 3736 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3737 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 3738 struct intel_dp *intel_dp = &dig_port->dp; 3739 bool is_mst = intel_crtc_has_type(old_crtc_state, 3740 INTEL_OUTPUT_DP_MST); 3741 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 3742 3743 /* 3744 * Power down sink before disabling the port, otherwise we end 3745 * up getting interrupts from the sink on detecting link loss. 3746 */ 3747 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); 3748 3749 if (INTEL_GEN(dev_priv) >= 12) { 3750 if (is_mst) { 3751 enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder; 3752 u32 val; 3753 3754 val = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); 3755 val &= ~TGL_TRANS_DDI_PORT_MASK; 3756 I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), val); 3757 } 3758 } else { 3759 if (!is_mst) 3760 intel_ddi_disable_pipe_clock(old_crtc_state); 3761 } 3762 3763 intel_disable_ddi_buf(encoder, old_crtc_state); 3764 3765 /* 3766 * From TGL spec: "If single stream or multi-stream master transcoder: 3767 * Configure Transcoder Clock select to direct no clock to the 3768 * transcoder" 3769 */ 3770 if (INTEL_GEN(dev_priv) >= 12) 3771 intel_ddi_disable_pipe_clock(old_crtc_state); 3772 3773 intel_edp_panel_vdd_on(intel_dp); 3774 intel_edp_panel_off(intel_dp); 3775 3776 if (!intel_phy_is_tc(dev_priv, phy) || 3777 dig_port->tc_mode != TC_PORT_TBT_ALT) 3778 intel_display_power_put_unchecked(dev_priv, 3779 dig_port->ddi_io_power_domain); 3780 3781 intel_ddi_clk_disable(encoder); 3782 tgl_clear_psr2_transcoder_exitline(old_crtc_state); 3783 } 3784 3785 static void intel_ddi_post_disable_hdmi(struct intel_encoder *encoder, 3786 const struct intel_crtc_state *old_crtc_state, 3787 const struct drm_connector_state *old_conn_state) 3788 { 3789 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3790 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 3791 struct intel_hdmi *intel_hdmi = &dig_port->hdmi; 3792 3793 dig_port->set_infoframes(encoder, false, 3794 old_crtc_state, old_conn_state); 3795 3796 intel_ddi_disable_pipe_clock(old_crtc_state); 3797 3798 intel_disable_ddi_buf(encoder, old_crtc_state); 3799 3800 intel_display_power_put_unchecked(dev_priv, 3801 dig_port->ddi_io_power_domain); 3802 3803 intel_ddi_clk_disable(encoder); 3804 3805 intel_dp_dual_mode_set_tmds_output(intel_hdmi, false); 3806 } 3807 3808 static void icl_disable_transcoder_port_sync(const struct intel_crtc_state *old_crtc_state) 3809 { 3810 struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc); 3811 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 3812 3813 if (old_crtc_state->master_transcoder == INVALID_TRANSCODER) 3814 return; 3815 3816 DRM_DEBUG_KMS("Disabling Transcoder Port Sync on Slave Transcoder %s\n", 3817 transcoder_name(old_crtc_state->cpu_transcoder)); 3818 3819 I915_WRITE(TRANS_DDI_FUNC_CTL2(old_crtc_state->cpu_transcoder), 0); 3820 } 3821 3822 static void intel_ddi_post_disable(struct intel_encoder *encoder, 3823 const struct intel_crtc_state *old_crtc_state, 3824 const struct drm_connector_state *old_conn_state) 3825 { 3826 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3827 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 3828 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 3829 bool is_tc_port = intel_phy_is_tc(dev_priv, phy); 3830 3831 if (!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST)) { 3832 intel_crtc_vblank_off(old_crtc_state); 3833 3834 intel_disable_pipe(old_crtc_state); 3835 3836 if (INTEL_GEN(dev_priv) >= 11) 3837 icl_disable_transcoder_port_sync(old_crtc_state); 3838 3839 intel_ddi_disable_transcoder_func(old_crtc_state); 3840 3841 intel_dsc_disable(old_crtc_state); 3842 3843 if (INTEL_GEN(dev_priv) >= 9) 3844 skl_scaler_disable(old_crtc_state); 3845 else 3846 ilk_pfit_disable(old_crtc_state); 3847 } 3848 3849 /* 3850 * When called from DP MST code: 3851 * - old_conn_state will be NULL 3852 * - encoder will be the main encoder (ie. mst->primary) 3853 * - the main connector associated with this port 3854 * won't be active or linked to a crtc 3855 * - old_crtc_state will be the state of the last stream to 3856 * be deactivated on this port, and it may not be the same 3857 * stream that was activated last, but each stream 3858 * should have a state that is identical when it comes to 3859 * the DP link parameteres 3860 */ 3861 3862 if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI)) 3863 intel_ddi_post_disable_hdmi(encoder, 3864 old_crtc_state, old_conn_state); 3865 else 3866 intel_ddi_post_disable_dp(encoder, 3867 old_crtc_state, old_conn_state); 3868 3869 if (INTEL_GEN(dev_priv) >= 11) 3870 icl_unmap_plls_to_ports(encoder); 3871 3872 if (intel_crtc_has_dp_encoder(old_crtc_state) || is_tc_port) 3873 intel_display_power_put_unchecked(dev_priv, 3874 intel_ddi_main_link_aux_domain(dig_port)); 3875 3876 if (is_tc_port) 3877 intel_tc_port_put_link(dig_port); 3878 } 3879 3880 void intel_ddi_fdi_post_disable(struct intel_encoder *encoder, 3881 const struct intel_crtc_state *old_crtc_state, 3882 const struct drm_connector_state *old_conn_state) 3883 { 3884 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3885 u32 val; 3886 3887 /* 3888 * Bspec lists this as both step 13 (before DDI_BUF_CTL disable) 3889 * and step 18 (after clearing PORT_CLK_SEL). Based on a BUN, 3890 * step 13 is the correct place for it. Step 18 is where it was 3891 * originally before the BUN. 3892 */ 3893 val = I915_READ(FDI_RX_CTL(PIPE_A)); 3894 val &= ~FDI_RX_ENABLE; 3895 I915_WRITE(FDI_RX_CTL(PIPE_A), val); 3896 3897 intel_disable_ddi_buf(encoder, old_crtc_state); 3898 intel_ddi_clk_disable(encoder); 3899 3900 val = I915_READ(FDI_RX_MISC(PIPE_A)); 3901 val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); 3902 val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2); 3903 I915_WRITE(FDI_RX_MISC(PIPE_A), val); 3904 3905 val = I915_READ(FDI_RX_CTL(PIPE_A)); 3906 val &= ~FDI_PCDCLK; 3907 I915_WRITE(FDI_RX_CTL(PIPE_A), val); 3908 3909 val = I915_READ(FDI_RX_CTL(PIPE_A)); 3910 val &= ~FDI_RX_PLL_ENABLE; 3911 I915_WRITE(FDI_RX_CTL(PIPE_A), val); 3912 } 3913 3914 static void intel_enable_ddi_dp(struct intel_encoder *encoder, 3915 const struct intel_crtc_state *crtc_state, 3916 const struct drm_connector_state *conn_state) 3917 { 3918 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3919 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 3920 enum port port = encoder->port; 3921 3922 if (port == PORT_A && INTEL_GEN(dev_priv) < 9) 3923 intel_dp_stop_link_train(intel_dp); 3924 3925 intel_edp_backlight_on(crtc_state, conn_state); 3926 intel_psr_enable(intel_dp, crtc_state); 3927 intel_dp_vsc_enable(intel_dp, crtc_state, conn_state); 3928 intel_dp_hdr_metadata_enable(intel_dp, crtc_state, conn_state); 3929 intel_edp_drrs_enable(intel_dp, crtc_state); 3930 3931 if (crtc_state->has_audio) 3932 intel_audio_codec_enable(encoder, crtc_state, conn_state); 3933 } 3934 3935 static i915_reg_t 3936 gen9_chicken_trans_reg_by_port(struct drm_i915_private *dev_priv, 3937 enum port port) 3938 { 3939 static const enum transcoder trans[] = { 3940 [PORT_A] = TRANSCODER_EDP, 3941 [PORT_B] = TRANSCODER_A, 3942 [PORT_C] = TRANSCODER_B, 3943 [PORT_D] = TRANSCODER_C, 3944 [PORT_E] = TRANSCODER_A, 3945 }; 3946 3947 WARN_ON(INTEL_GEN(dev_priv) < 9); 3948 3949 if (WARN_ON(port < PORT_A || port > PORT_E)) 3950 port = PORT_A; 3951 3952 return CHICKEN_TRANS(trans[port]); 3953 } 3954 3955 static void intel_enable_ddi_hdmi(struct intel_encoder *encoder, 3956 const struct intel_crtc_state *crtc_state, 3957 const struct drm_connector_state *conn_state) 3958 { 3959 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 3960 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 3961 struct drm_connector *connector = conn_state->connector; 3962 enum port port = encoder->port; 3963 3964 if (!intel_hdmi_handle_sink_scrambling(encoder, connector, 3965 crtc_state->hdmi_high_tmds_clock_ratio, 3966 crtc_state->hdmi_scrambling)) 3967 DRM_ERROR("[CONNECTOR:%d:%s] Failed to configure sink scrambling/TMDS bit clock ratio\n", 3968 connector->base.id, connector->name); 3969 3970 /* Display WA #1143: skl,kbl,cfl */ 3971 if (IS_GEN9_BC(dev_priv)) { 3972 /* 3973 * For some reason these chicken bits have been 3974 * stuffed into a transcoder register, event though 3975 * the bits affect a specific DDI port rather than 3976 * a specific transcoder. 3977 */ 3978 i915_reg_t reg = gen9_chicken_trans_reg_by_port(dev_priv, port); 3979 u32 val; 3980 3981 val = I915_READ(reg); 3982 3983 if (port == PORT_E) 3984 val |= DDIE_TRAINING_OVERRIDE_ENABLE | 3985 DDIE_TRAINING_OVERRIDE_VALUE; 3986 else 3987 val |= DDI_TRAINING_OVERRIDE_ENABLE | 3988 DDI_TRAINING_OVERRIDE_VALUE; 3989 3990 I915_WRITE(reg, val); 3991 POSTING_READ(reg); 3992 3993 udelay(1); 3994 3995 if (port == PORT_E) 3996 val &= ~(DDIE_TRAINING_OVERRIDE_ENABLE | 3997 DDIE_TRAINING_OVERRIDE_VALUE); 3998 else 3999 val &= ~(DDI_TRAINING_OVERRIDE_ENABLE | 4000 DDI_TRAINING_OVERRIDE_VALUE); 4001 4002 I915_WRITE(reg, val); 4003 } 4004 4005 /* In HDMI/DVI mode, the port width, and swing/emphasis values 4006 * are ignored so nothing special needs to be done besides 4007 * enabling the port. 4008 */ 4009 I915_WRITE(DDI_BUF_CTL(port), 4010 dig_port->saved_port_bits | DDI_BUF_CTL_ENABLE); 4011 4012 if (crtc_state->has_audio) 4013 intel_audio_codec_enable(encoder, crtc_state, conn_state); 4014 } 4015 4016 static void intel_enable_ddi(struct intel_encoder *encoder, 4017 const struct intel_crtc_state *crtc_state, 4018 const struct drm_connector_state *conn_state) 4019 { 4020 if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) 4021 intel_enable_ddi_hdmi(encoder, crtc_state, conn_state); 4022 else 4023 intel_enable_ddi_dp(encoder, crtc_state, conn_state); 4024 4025 /* Enable hdcp if it's desired */ 4026 if (conn_state->content_protection == 4027 DRM_MODE_CONTENT_PROTECTION_DESIRED) 4028 intel_hdcp_enable(to_intel_connector(conn_state->connector), 4029 crtc_state->cpu_transcoder, 4030 (u8)conn_state->hdcp_content_type); 4031 } 4032 4033 static void intel_disable_ddi_dp(struct intel_encoder *encoder, 4034 const struct intel_crtc_state *old_crtc_state, 4035 const struct drm_connector_state *old_conn_state) 4036 { 4037 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 4038 4039 intel_dp->link_trained = false; 4040 4041 if (old_crtc_state->has_audio) 4042 intel_audio_codec_disable(encoder, 4043 old_crtc_state, old_conn_state); 4044 4045 intel_edp_drrs_disable(intel_dp, old_crtc_state); 4046 intel_psr_disable(intel_dp, old_crtc_state); 4047 intel_edp_backlight_off(old_conn_state); 4048 /* Disable the decompression in DP Sink */ 4049 intel_dp_sink_set_decompression_state(intel_dp, old_crtc_state, 4050 false); 4051 } 4052 4053 static void intel_disable_ddi_hdmi(struct intel_encoder *encoder, 4054 const struct intel_crtc_state *old_crtc_state, 4055 const struct drm_connector_state *old_conn_state) 4056 { 4057 struct drm_connector *connector = old_conn_state->connector; 4058 4059 if (old_crtc_state->has_audio) 4060 intel_audio_codec_disable(encoder, 4061 old_crtc_state, old_conn_state); 4062 4063 if (!intel_hdmi_handle_sink_scrambling(encoder, connector, 4064 false, false)) 4065 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Failed to reset sink scrambling/TMDS bit clock ratio\n", 4066 connector->base.id, connector->name); 4067 } 4068 4069 static void intel_disable_ddi(struct intel_encoder *encoder, 4070 const struct intel_crtc_state *old_crtc_state, 4071 const struct drm_connector_state *old_conn_state) 4072 { 4073 intel_hdcp_disable(to_intel_connector(old_conn_state->connector)); 4074 4075 if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI)) 4076 intel_disable_ddi_hdmi(encoder, old_crtc_state, old_conn_state); 4077 else 4078 intel_disable_ddi_dp(encoder, old_crtc_state, old_conn_state); 4079 } 4080 4081 static void intel_ddi_update_pipe_dp(struct intel_encoder *encoder, 4082 const struct intel_crtc_state *crtc_state, 4083 const struct drm_connector_state *conn_state) 4084 { 4085 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 4086 4087 intel_ddi_set_dp_msa(crtc_state, conn_state); 4088 4089 intel_psr_update(intel_dp, crtc_state); 4090 intel_edp_drrs_enable(intel_dp, crtc_state); 4091 4092 intel_panel_update_backlight(encoder, crtc_state, conn_state); 4093 } 4094 4095 static void intel_ddi_update_pipe(struct intel_encoder *encoder, 4096 const struct intel_crtc_state *crtc_state, 4097 const struct drm_connector_state *conn_state) 4098 { 4099 struct intel_connector *connector = 4100 to_intel_connector(conn_state->connector); 4101 struct intel_hdcp *hdcp = &connector->hdcp; 4102 bool content_protection_type_changed = 4103 (conn_state->hdcp_content_type != hdcp->content_type && 4104 conn_state->content_protection != 4105 DRM_MODE_CONTENT_PROTECTION_UNDESIRED); 4106 4107 if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) 4108 intel_ddi_update_pipe_dp(encoder, crtc_state, conn_state); 4109 4110 /* 4111 * During the HDCP encryption session if Type change is requested, 4112 * disable the HDCP and reenable it with new TYPE value. 4113 */ 4114 if (conn_state->content_protection == 4115 DRM_MODE_CONTENT_PROTECTION_UNDESIRED || 4116 content_protection_type_changed) 4117 intel_hdcp_disable(connector); 4118 4119 /* 4120 * Mark the hdcp state as DESIRED after the hdcp disable of type 4121 * change procedure. 4122 */ 4123 if (content_protection_type_changed) { 4124 mutex_lock(&hdcp->mutex); 4125 hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED; 4126 schedule_work(&hdcp->prop_work); 4127 mutex_unlock(&hdcp->mutex); 4128 } 4129 4130 if (conn_state->content_protection == 4131 DRM_MODE_CONTENT_PROTECTION_DESIRED || 4132 content_protection_type_changed) 4133 intel_hdcp_enable(connector, 4134 crtc_state->cpu_transcoder, 4135 (u8)conn_state->hdcp_content_type); 4136 } 4137 4138 static void 4139 intel_ddi_update_prepare(struct intel_atomic_state *state, 4140 struct intel_encoder *encoder, 4141 struct intel_crtc *crtc) 4142 { 4143 struct intel_crtc_state *crtc_state = 4144 crtc ? intel_atomic_get_new_crtc_state(state, crtc) : NULL; 4145 int required_lanes = crtc_state ? crtc_state->lane_count : 1; 4146 4147 WARN_ON(crtc && crtc->active); 4148 4149 intel_tc_port_get_link(enc_to_dig_port(encoder), 4150 required_lanes); 4151 if (crtc_state && crtc_state->hw.active) 4152 intel_update_active_dpll(state, crtc, encoder); 4153 } 4154 4155 static void 4156 intel_ddi_update_complete(struct intel_atomic_state *state, 4157 struct intel_encoder *encoder, 4158 struct intel_crtc *crtc) 4159 { 4160 intel_tc_port_put_link(enc_to_dig_port(encoder)); 4161 } 4162 4163 static void 4164 intel_ddi_pre_pll_enable(struct intel_encoder *encoder, 4165 const struct intel_crtc_state *crtc_state, 4166 const struct drm_connector_state *conn_state) 4167 { 4168 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 4169 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 4170 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 4171 bool is_tc_port = intel_phy_is_tc(dev_priv, phy); 4172 4173 if (is_tc_port) 4174 intel_tc_port_get_link(dig_port, crtc_state->lane_count); 4175 4176 if (intel_crtc_has_dp_encoder(crtc_state) || is_tc_port) 4177 intel_display_power_get(dev_priv, 4178 intel_ddi_main_link_aux_domain(dig_port)); 4179 4180 if (is_tc_port && dig_port->tc_mode != TC_PORT_TBT_ALT) 4181 /* 4182 * Program the lane count for static/dynamic connections on 4183 * Type-C ports. Skip this step for TBT. 4184 */ 4185 intel_tc_port_set_fia_lane_count(dig_port, crtc_state->lane_count); 4186 else if (IS_GEN9_LP(dev_priv)) 4187 bxt_ddi_phy_set_lane_optim_mask(encoder, 4188 crtc_state->lane_lat_optim_mask); 4189 } 4190 4191 static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp) 4192 { 4193 struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); 4194 struct drm_i915_private *dev_priv = 4195 to_i915(intel_dig_port->base.base.dev); 4196 enum port port = intel_dig_port->base.port; 4197 u32 dp_tp_ctl, ddi_buf_ctl; 4198 bool wait = false; 4199 4200 dp_tp_ctl = I915_READ(intel_dp->regs.dp_tp_ctl); 4201 4202 if (dp_tp_ctl & DP_TP_CTL_ENABLE) { 4203 ddi_buf_ctl = I915_READ(DDI_BUF_CTL(port)); 4204 if (ddi_buf_ctl & DDI_BUF_CTL_ENABLE) { 4205 I915_WRITE(DDI_BUF_CTL(port), 4206 ddi_buf_ctl & ~DDI_BUF_CTL_ENABLE); 4207 wait = true; 4208 } 4209 4210 dp_tp_ctl &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); 4211 dp_tp_ctl |= DP_TP_CTL_LINK_TRAIN_PAT1; 4212 I915_WRITE(intel_dp->regs.dp_tp_ctl, dp_tp_ctl); 4213 POSTING_READ(intel_dp->regs.dp_tp_ctl); 4214 4215 if (wait) 4216 intel_wait_ddi_buf_idle(dev_priv, port); 4217 } 4218 4219 dp_tp_ctl = DP_TP_CTL_ENABLE | 4220 DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE; 4221 if (intel_dp->link_mst) 4222 dp_tp_ctl |= DP_TP_CTL_MODE_MST; 4223 else { 4224 dp_tp_ctl |= DP_TP_CTL_MODE_SST; 4225 if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) 4226 dp_tp_ctl |= DP_TP_CTL_ENHANCED_FRAME_ENABLE; 4227 } 4228 I915_WRITE(intel_dp->regs.dp_tp_ctl, dp_tp_ctl); 4229 POSTING_READ(intel_dp->regs.dp_tp_ctl); 4230 4231 intel_dp->DP |= DDI_BUF_CTL_ENABLE; 4232 I915_WRITE(DDI_BUF_CTL(port), intel_dp->DP); 4233 POSTING_READ(DDI_BUF_CTL(port)); 4234 4235 udelay(600); 4236 } 4237 4238 static bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv, 4239 enum transcoder cpu_transcoder) 4240 { 4241 if (cpu_transcoder == TRANSCODER_EDP) 4242 return false; 4243 4244 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO)) 4245 return false; 4246 4247 return I915_READ(HSW_AUD_PIN_ELD_CP_VLD) & 4248 AUDIO_OUTPUT_ENABLE(cpu_transcoder); 4249 } 4250 4251 void intel_ddi_compute_min_voltage_level(struct drm_i915_private *dev_priv, 4252 struct intel_crtc_state *crtc_state) 4253 { 4254 if (IS_ELKHARTLAKE(dev_priv) && crtc_state->port_clock > 594000) 4255 crtc_state->min_voltage_level = 3; 4256 else if (INTEL_GEN(dev_priv) >= 11 && crtc_state->port_clock > 594000) 4257 crtc_state->min_voltage_level = 1; 4258 else if (IS_CANNONLAKE(dev_priv) && crtc_state->port_clock > 594000) 4259 crtc_state->min_voltage_level = 2; 4260 } 4261 4262 void intel_ddi_get_config(struct intel_encoder *encoder, 4263 struct intel_crtc_state *pipe_config) 4264 { 4265 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 4266 struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->uapi.crtc); 4267 enum transcoder cpu_transcoder = pipe_config->cpu_transcoder; 4268 u32 temp, flags = 0; 4269 4270 /* XXX: DSI transcoder paranoia */ 4271 if (WARN_ON(transcoder_is_dsi(cpu_transcoder))) 4272 return; 4273 4274 intel_dsc_get_config(encoder, pipe_config); 4275 4276 temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); 4277 if (temp & TRANS_DDI_PHSYNC) 4278 flags |= DRM_MODE_FLAG_PHSYNC; 4279 else 4280 flags |= DRM_MODE_FLAG_NHSYNC; 4281 if (temp & TRANS_DDI_PVSYNC) 4282 flags |= DRM_MODE_FLAG_PVSYNC; 4283 else 4284 flags |= DRM_MODE_FLAG_NVSYNC; 4285 4286 pipe_config->hw.adjusted_mode.flags |= flags; 4287 4288 switch (temp & TRANS_DDI_BPC_MASK) { 4289 case TRANS_DDI_BPC_6: 4290 pipe_config->pipe_bpp = 18; 4291 break; 4292 case TRANS_DDI_BPC_8: 4293 pipe_config->pipe_bpp = 24; 4294 break; 4295 case TRANS_DDI_BPC_10: 4296 pipe_config->pipe_bpp = 30; 4297 break; 4298 case TRANS_DDI_BPC_12: 4299 pipe_config->pipe_bpp = 36; 4300 break; 4301 default: 4302 break; 4303 } 4304 4305 switch (temp & TRANS_DDI_MODE_SELECT_MASK) { 4306 case TRANS_DDI_MODE_SELECT_HDMI: 4307 pipe_config->has_hdmi_sink = true; 4308 4309 pipe_config->infoframes.enable |= 4310 intel_hdmi_infoframes_enabled(encoder, pipe_config); 4311 4312 if (pipe_config->infoframes.enable) 4313 pipe_config->has_infoframe = true; 4314 4315 if (temp & TRANS_DDI_HDMI_SCRAMBLING) 4316 pipe_config->hdmi_scrambling = true; 4317 if (temp & TRANS_DDI_HIGH_TMDS_CHAR_RATE) 4318 pipe_config->hdmi_high_tmds_clock_ratio = true; 4319 /* fall through */ 4320 case TRANS_DDI_MODE_SELECT_DVI: 4321 pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI); 4322 pipe_config->lane_count = 4; 4323 break; 4324 case TRANS_DDI_MODE_SELECT_FDI: 4325 pipe_config->output_types |= BIT(INTEL_OUTPUT_ANALOG); 4326 break; 4327 case TRANS_DDI_MODE_SELECT_DP_SST: 4328 if (encoder->type == INTEL_OUTPUT_EDP) 4329 pipe_config->output_types |= BIT(INTEL_OUTPUT_EDP); 4330 else 4331 pipe_config->output_types |= BIT(INTEL_OUTPUT_DP); 4332 pipe_config->lane_count = 4333 ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1; 4334 intel_dp_get_m_n(intel_crtc, pipe_config); 4335 4336 if (INTEL_GEN(dev_priv) >= 11) { 4337 i915_reg_t dp_tp_ctl; 4338 4339 if (IS_GEN(dev_priv, 11)) 4340 dp_tp_ctl = DP_TP_CTL(encoder->port); 4341 else 4342 dp_tp_ctl = TGL_DP_TP_CTL(pipe_config->cpu_transcoder); 4343 4344 pipe_config->fec_enable = 4345 I915_READ(dp_tp_ctl) & DP_TP_CTL_FEC_ENABLE; 4346 4347 DRM_DEBUG_KMS("[ENCODER:%d:%s] Fec status: %u\n", 4348 encoder->base.base.id, encoder->base.name, 4349 pipe_config->fec_enable); 4350 } 4351 4352 break; 4353 case TRANS_DDI_MODE_SELECT_DP_MST: 4354 pipe_config->output_types |= BIT(INTEL_OUTPUT_DP_MST); 4355 pipe_config->lane_count = 4356 ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1; 4357 4358 if (INTEL_GEN(dev_priv) >= 12) 4359 pipe_config->mst_master_transcoder = 4360 REG_FIELD_GET(TRANS_DDI_MST_TRANSPORT_SELECT_MASK, temp); 4361 4362 intel_dp_get_m_n(intel_crtc, pipe_config); 4363 break; 4364 default: 4365 break; 4366 } 4367 4368 if (encoder->type == INTEL_OUTPUT_EDP) 4369 tgl_dc3co_exitline_get_config(pipe_config); 4370 4371 pipe_config->has_audio = 4372 intel_ddi_is_audio_enabled(dev_priv, cpu_transcoder); 4373 4374 if (encoder->type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp.bpp && 4375 pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) { 4376 /* 4377 * This is a big fat ugly hack. 4378 * 4379 * Some machines in UEFI boot mode provide us a VBT that has 18 4380 * bpp and 1.62 GHz link bandwidth for eDP, which for reasons 4381 * unknown we fail to light up. Yet the same BIOS boots up with 4382 * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as 4383 * max, not what it tells us to use. 4384 * 4385 * Note: This will still be broken if the eDP panel is not lit 4386 * up by the BIOS, and thus we can't get the mode at module 4387 * load. 4388 */ 4389 DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", 4390 pipe_config->pipe_bpp, dev_priv->vbt.edp.bpp); 4391 dev_priv->vbt.edp.bpp = pipe_config->pipe_bpp; 4392 } 4393 4394 intel_ddi_clock_get(encoder, pipe_config); 4395 4396 if (IS_GEN9_LP(dev_priv)) 4397 pipe_config->lane_lat_optim_mask = 4398 bxt_ddi_phy_get_lane_lat_optim_mask(encoder); 4399 4400 intel_ddi_compute_min_voltage_level(dev_priv, pipe_config); 4401 4402 intel_hdmi_read_gcp_infoframe(encoder, pipe_config); 4403 4404 intel_read_infoframe(encoder, pipe_config, 4405 HDMI_INFOFRAME_TYPE_AVI, 4406 &pipe_config->infoframes.avi); 4407 intel_read_infoframe(encoder, pipe_config, 4408 HDMI_INFOFRAME_TYPE_SPD, 4409 &pipe_config->infoframes.spd); 4410 intel_read_infoframe(encoder, pipe_config, 4411 HDMI_INFOFRAME_TYPE_VENDOR, 4412 &pipe_config->infoframes.hdmi); 4413 intel_read_infoframe(encoder, pipe_config, 4414 HDMI_INFOFRAME_TYPE_DRM, 4415 &pipe_config->infoframes.drm); 4416 } 4417 4418 static enum intel_output_type 4419 intel_ddi_compute_output_type(struct intel_encoder *encoder, 4420 struct intel_crtc_state *crtc_state, 4421 struct drm_connector_state *conn_state) 4422 { 4423 switch (conn_state->connector->connector_type) { 4424 case DRM_MODE_CONNECTOR_HDMIA: 4425 return INTEL_OUTPUT_HDMI; 4426 case DRM_MODE_CONNECTOR_eDP: 4427 return INTEL_OUTPUT_EDP; 4428 case DRM_MODE_CONNECTOR_DisplayPort: 4429 return INTEL_OUTPUT_DP; 4430 default: 4431 MISSING_CASE(conn_state->connector->connector_type); 4432 return INTEL_OUTPUT_UNUSED; 4433 } 4434 } 4435 4436 static int intel_ddi_compute_config(struct intel_encoder *encoder, 4437 struct intel_crtc_state *pipe_config, 4438 struct drm_connector_state *conn_state) 4439 { 4440 struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); 4441 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 4442 enum port port = encoder->port; 4443 int ret; 4444 4445 if (HAS_TRANSCODER_EDP(dev_priv) && port == PORT_A) 4446 pipe_config->cpu_transcoder = TRANSCODER_EDP; 4447 4448 if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI)) { 4449 ret = intel_hdmi_compute_config(encoder, pipe_config, conn_state); 4450 } else { 4451 ret = intel_dp_compute_config(encoder, pipe_config, conn_state); 4452 tgl_dc3co_exitline_compute_config(encoder, pipe_config); 4453 } 4454 4455 if (ret) 4456 return ret; 4457 4458 if (IS_HASWELL(dev_priv) && crtc->pipe == PIPE_A && 4459 pipe_config->cpu_transcoder == TRANSCODER_EDP) 4460 pipe_config->pch_pfit.force_thru = 4461 pipe_config->pch_pfit.enabled || 4462 pipe_config->crc_enabled; 4463 4464 if (IS_GEN9_LP(dev_priv)) 4465 pipe_config->lane_lat_optim_mask = 4466 bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count); 4467 4468 intel_ddi_compute_min_voltage_level(dev_priv, pipe_config); 4469 4470 return 0; 4471 } 4472 4473 static void intel_ddi_encoder_destroy(struct drm_encoder *encoder) 4474 { 4475 struct intel_digital_port *dig_port = enc_to_dig_port(to_intel_encoder(encoder)); 4476 4477 intel_dp_encoder_flush_work(encoder); 4478 4479 drm_encoder_cleanup(encoder); 4480 kfree(dig_port); 4481 } 4482 4483 static const struct drm_encoder_funcs intel_ddi_funcs = { 4484 .reset = intel_dp_encoder_reset, 4485 .destroy = intel_ddi_encoder_destroy, 4486 }; 4487 4488 static struct intel_connector * 4489 intel_ddi_init_dp_connector(struct intel_digital_port *intel_dig_port) 4490 { 4491 struct intel_connector *connector; 4492 enum port port = intel_dig_port->base.port; 4493 4494 connector = intel_connector_alloc(); 4495 if (!connector) 4496 return NULL; 4497 4498 intel_dig_port->dp.output_reg = DDI_BUF_CTL(port); 4499 intel_dig_port->dp.prepare_link_retrain = 4500 intel_ddi_prepare_link_retrain; 4501 4502 if (!intel_dp_init_connector(intel_dig_port, connector)) { 4503 kfree(connector); 4504 return NULL; 4505 } 4506 4507 return connector; 4508 } 4509 4510 static int modeset_pipe(struct drm_crtc *crtc, 4511 struct drm_modeset_acquire_ctx *ctx) 4512 { 4513 struct drm_atomic_state *state; 4514 struct drm_crtc_state *crtc_state; 4515 int ret; 4516 4517 state = drm_atomic_state_alloc(crtc->dev); 4518 if (!state) 4519 return -ENOMEM; 4520 4521 state->acquire_ctx = ctx; 4522 4523 crtc_state = drm_atomic_get_crtc_state(state, crtc); 4524 if (IS_ERR(crtc_state)) { 4525 ret = PTR_ERR(crtc_state); 4526 goto out; 4527 } 4528 4529 crtc_state->connectors_changed = true; 4530 4531 ret = drm_atomic_commit(state); 4532 out: 4533 drm_atomic_state_put(state); 4534 4535 return ret; 4536 } 4537 4538 static int intel_hdmi_reset_link(struct intel_encoder *encoder, 4539 struct drm_modeset_acquire_ctx *ctx) 4540 { 4541 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 4542 struct intel_hdmi *hdmi = enc_to_intel_hdmi(encoder); 4543 struct intel_connector *connector = hdmi->attached_connector; 4544 struct i2c_adapter *adapter = 4545 intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus); 4546 struct drm_connector_state *conn_state; 4547 struct intel_crtc_state *crtc_state; 4548 struct intel_crtc *crtc; 4549 u8 config; 4550 int ret; 4551 4552 if (!connector || connector->base.status != connector_status_connected) 4553 return 0; 4554 4555 ret = drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex, 4556 ctx); 4557 if (ret) 4558 return ret; 4559 4560 conn_state = connector->base.state; 4561 4562 crtc = to_intel_crtc(conn_state->crtc); 4563 if (!crtc) 4564 return 0; 4565 4566 ret = drm_modeset_lock(&crtc->base.mutex, ctx); 4567 if (ret) 4568 return ret; 4569 4570 crtc_state = to_intel_crtc_state(crtc->base.state); 4571 4572 WARN_ON(!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)); 4573 4574 if (!crtc_state->hw.active) 4575 return 0; 4576 4577 if (!crtc_state->hdmi_high_tmds_clock_ratio && 4578 !crtc_state->hdmi_scrambling) 4579 return 0; 4580 4581 if (conn_state->commit && 4582 !try_wait_for_completion(&conn_state->commit->hw_done)) 4583 return 0; 4584 4585 ret = drm_scdc_readb(adapter, SCDC_TMDS_CONFIG, &config); 4586 if (ret < 0) { 4587 DRM_ERROR("Failed to read TMDS config: %d\n", ret); 4588 return 0; 4589 } 4590 4591 if (!!(config & SCDC_TMDS_BIT_CLOCK_RATIO_BY_40) == 4592 crtc_state->hdmi_high_tmds_clock_ratio && 4593 !!(config & SCDC_SCRAMBLING_ENABLE) == 4594 crtc_state->hdmi_scrambling) 4595 return 0; 4596 4597 /* 4598 * HDMI 2.0 says that one should not send scrambled data 4599 * prior to configuring the sink scrambling, and that 4600 * TMDS clock/data transmission should be suspended when 4601 * changing the TMDS clock rate in the sink. So let's 4602 * just do a full modeset here, even though some sinks 4603 * would be perfectly happy if were to just reconfigure 4604 * the SCDC settings on the fly. 4605 */ 4606 return modeset_pipe(&crtc->base, ctx); 4607 } 4608 4609 static enum intel_hotplug_state 4610 intel_ddi_hotplug(struct intel_encoder *encoder, 4611 struct intel_connector *connector, 4612 bool irq_received) 4613 { 4614 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 4615 struct drm_modeset_acquire_ctx ctx; 4616 enum intel_hotplug_state state; 4617 int ret; 4618 4619 state = intel_encoder_hotplug(encoder, connector, irq_received); 4620 4621 drm_modeset_acquire_init(&ctx, 0); 4622 4623 for (;;) { 4624 if (connector->base.connector_type == DRM_MODE_CONNECTOR_HDMIA) 4625 ret = intel_hdmi_reset_link(encoder, &ctx); 4626 else 4627 ret = intel_dp_retrain_link(encoder, &ctx); 4628 4629 if (ret == -EDEADLK) { 4630 drm_modeset_backoff(&ctx); 4631 continue; 4632 } 4633 4634 break; 4635 } 4636 4637 drm_modeset_drop_locks(&ctx); 4638 drm_modeset_acquire_fini(&ctx); 4639 WARN(ret, "Acquiring modeset locks failed with %i\n", ret); 4640 4641 /* 4642 * Unpowered type-c dongles can take some time to boot and be 4643 * responsible, so here giving some time to those dongles to power up 4644 * and then retrying the probe. 4645 * 4646 * On many platforms the HDMI live state signal is known to be 4647 * unreliable, so we can't use it to detect if a sink is connected or 4648 * not. Instead we detect if it's connected based on whether we can 4649 * read the EDID or not. That in turn has a problem during disconnect, 4650 * since the HPD interrupt may be raised before the DDC lines get 4651 * disconnected (due to how the required length of DDC vs. HPD 4652 * connector pins are specified) and so we'll still be able to get a 4653 * valid EDID. To solve this schedule another detection cycle if this 4654 * time around we didn't detect any change in the sink's connection 4655 * status. 4656 */ 4657 if (state == INTEL_HOTPLUG_UNCHANGED && irq_received && 4658 !dig_port->dp.is_mst) 4659 state = INTEL_HOTPLUG_RETRY; 4660 4661 return state; 4662 } 4663 4664 static struct intel_connector * 4665 intel_ddi_init_hdmi_connector(struct intel_digital_port *intel_dig_port) 4666 { 4667 struct intel_connector *connector; 4668 enum port port = intel_dig_port->base.port; 4669 4670 connector = intel_connector_alloc(); 4671 if (!connector) 4672 return NULL; 4673 4674 intel_dig_port->hdmi.hdmi_reg = DDI_BUF_CTL(port); 4675 intel_hdmi_init_connector(intel_dig_port, connector); 4676 4677 return connector; 4678 } 4679 4680 static bool intel_ddi_a_force_4_lanes(struct intel_digital_port *dport) 4681 { 4682 struct drm_i915_private *dev_priv = to_i915(dport->base.base.dev); 4683 4684 if (dport->base.port != PORT_A) 4685 return false; 4686 4687 if (dport->saved_port_bits & DDI_A_4_LANES) 4688 return false; 4689 4690 /* Broxton/Geminilake: Bspec says that DDI_A_4_LANES is the only 4691 * supported configuration 4692 */ 4693 if (IS_GEN9_LP(dev_priv)) 4694 return true; 4695 4696 /* Cannonlake: Most of SKUs don't support DDI_E, and the only 4697 * one who does also have a full A/E split called 4698 * DDI_F what makes DDI_E useless. However for this 4699 * case let's trust VBT info. 4700 */ 4701 if (IS_CANNONLAKE(dev_priv) && 4702 !intel_bios_is_port_present(dev_priv, PORT_E)) 4703 return true; 4704 4705 return false; 4706 } 4707 4708 static int 4709 intel_ddi_max_lanes(struct intel_digital_port *intel_dport) 4710 { 4711 struct drm_i915_private *dev_priv = to_i915(intel_dport->base.base.dev); 4712 enum port port = intel_dport->base.port; 4713 int max_lanes = 4; 4714 4715 if (INTEL_GEN(dev_priv) >= 11) 4716 return max_lanes; 4717 4718 if (port == PORT_A || port == PORT_E) { 4719 if (I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES) 4720 max_lanes = port == PORT_A ? 4 : 0; 4721 else 4722 /* Both A and E share 2 lanes */ 4723 max_lanes = 2; 4724 } 4725 4726 /* 4727 * Some BIOS might fail to set this bit on port A if eDP 4728 * wasn't lit up at boot. Force this bit set when needed 4729 * so we use the proper lane count for our calculations. 4730 */ 4731 if (intel_ddi_a_force_4_lanes(intel_dport)) { 4732 DRM_DEBUG_KMS("Forcing DDI_A_4_LANES for port A\n"); 4733 intel_dport->saved_port_bits |= DDI_A_4_LANES; 4734 max_lanes = 4; 4735 } 4736 4737 return max_lanes; 4738 } 4739 4740 void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port) 4741 { 4742 struct ddi_vbt_port_info *port_info = 4743 &dev_priv->vbt.ddi_port_info[port]; 4744 struct intel_digital_port *intel_dig_port; 4745 struct intel_encoder *encoder; 4746 bool init_hdmi, init_dp, init_lspcon = false; 4747 enum phy phy = intel_port_to_phy(dev_priv, port); 4748 4749 init_hdmi = port_info->supports_dvi || port_info->supports_hdmi; 4750 init_dp = port_info->supports_dp; 4751 4752 if (intel_bios_is_lspcon_present(dev_priv, port)) { 4753 /* 4754 * Lspcon device needs to be driven with DP connector 4755 * with special detection sequence. So make sure DP 4756 * is initialized before lspcon. 4757 */ 4758 init_dp = true; 4759 init_lspcon = true; 4760 init_hdmi = false; 4761 DRM_DEBUG_KMS("VBT says port %c has lspcon\n", port_name(port)); 4762 } 4763 4764 if (!init_dp && !init_hdmi) { 4765 DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible, respect it\n", 4766 port_name(port)); 4767 return; 4768 } 4769 4770 intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); 4771 if (!intel_dig_port) 4772 return; 4773 4774 encoder = &intel_dig_port->base; 4775 4776 drm_encoder_init(&dev_priv->drm, &encoder->base, &intel_ddi_funcs, 4777 DRM_MODE_ENCODER_TMDS, "DDI %c", port_name(port)); 4778 4779 encoder->hotplug = intel_ddi_hotplug; 4780 encoder->compute_output_type = intel_ddi_compute_output_type; 4781 encoder->compute_config = intel_ddi_compute_config; 4782 encoder->enable = intel_enable_ddi; 4783 encoder->pre_pll_enable = intel_ddi_pre_pll_enable; 4784 encoder->pre_enable = intel_ddi_pre_enable; 4785 encoder->disable = intel_disable_ddi; 4786 encoder->post_disable = intel_ddi_post_disable; 4787 encoder->update_pipe = intel_ddi_update_pipe; 4788 encoder->get_hw_state = intel_ddi_get_hw_state; 4789 encoder->get_config = intel_ddi_get_config; 4790 encoder->suspend = intel_dp_encoder_suspend; 4791 encoder->get_power_domains = intel_ddi_get_power_domains; 4792 4793 encoder->type = INTEL_OUTPUT_DDI; 4794 encoder->power_domain = intel_port_to_power_domain(port); 4795 encoder->port = port; 4796 encoder->cloneable = 0; 4797 encoder->pipe_mask = ~0; 4798 4799 if (INTEL_GEN(dev_priv) >= 11) 4800 intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) & 4801 DDI_BUF_PORT_REVERSAL; 4802 else 4803 intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) & 4804 (DDI_BUF_PORT_REVERSAL | DDI_A_4_LANES); 4805 4806 intel_dig_port->dp.output_reg = INVALID_MMIO_REG; 4807 intel_dig_port->max_lanes = intel_ddi_max_lanes(intel_dig_port); 4808 intel_dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port); 4809 4810 if (intel_phy_is_tc(dev_priv, phy)) { 4811 bool is_legacy = !port_info->supports_typec_usb && 4812 !port_info->supports_tbt; 4813 4814 intel_tc_port_init(intel_dig_port, is_legacy); 4815 4816 encoder->update_prepare = intel_ddi_update_prepare; 4817 encoder->update_complete = intel_ddi_update_complete; 4818 } 4819 4820 WARN_ON(port > PORT_I); 4821 intel_dig_port->ddi_io_power_domain = POWER_DOMAIN_PORT_DDI_A_IO + 4822 port - PORT_A; 4823 4824 if (init_dp) { 4825 if (!intel_ddi_init_dp_connector(intel_dig_port)) 4826 goto err; 4827 4828 intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; 4829 } 4830 4831 /* In theory we don't need the encoder->type check, but leave it just in 4832 * case we have some really bad VBTs... */ 4833 if (encoder->type != INTEL_OUTPUT_EDP && init_hdmi) { 4834 if (!intel_ddi_init_hdmi_connector(intel_dig_port)) 4835 goto err; 4836 } 4837 4838 if (init_lspcon) { 4839 if (lspcon_init(intel_dig_port)) 4840 /* TODO: handle hdmi info frame part */ 4841 DRM_DEBUG_KMS("LSPCON init success on port %c\n", 4842 port_name(port)); 4843 else 4844 /* 4845 * LSPCON init faied, but DP init was success, so 4846 * lets try to drive as DP++ port. 4847 */ 4848 DRM_ERROR("LSPCON init failed on port %c\n", 4849 port_name(port)); 4850 } 4851 4852 intel_infoframe_init(intel_dig_port); 4853 4854 return; 4855 4856 err: 4857 drm_encoder_cleanup(&encoder->base); 4858 kfree(intel_dig_port); 4859 } 4860