1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2018 Intel Corporation 4 * 5 * Author: Gaurav K Singh <gaurav.k.singh@intel.com> 6 * Manasi Navare <manasi.d.navare@intel.com> 7 */ 8 #include <linux/limits.h> 9 #include "i915_drv.h" 10 #include "intel_de.h" 11 #include "intel_display_types.h" 12 #include "intel_dsi.h" 13 #include "intel_vdsc.h" 14 #include "intel_qp_tables.h" 15 16 enum ROW_INDEX_BPP { 17 ROW_INDEX_6BPP = 0, 18 ROW_INDEX_8BPP, 19 ROW_INDEX_10BPP, 20 ROW_INDEX_12BPP, 21 ROW_INDEX_15BPP, 22 MAX_ROW_INDEX 23 }; 24 25 enum COLUMN_INDEX_BPC { 26 COLUMN_INDEX_8BPC = 0, 27 COLUMN_INDEX_10BPC, 28 COLUMN_INDEX_12BPC, 29 COLUMN_INDEX_14BPC, 30 COLUMN_INDEX_16BPC, 31 MAX_COLUMN_INDEX 32 }; 33 34 /* From DSC_v1.11 spec, rc_parameter_Set syntax element typically constant */ 35 static const u16 rc_buf_thresh[] = { 36 896, 1792, 2688, 3584, 4480, 5376, 6272, 6720, 7168, 7616, 37 7744, 7872, 8000, 8064 38 }; 39 40 struct rc_parameters { 41 u16 initial_xmit_delay; 42 u8 first_line_bpg_offset; 43 u16 initial_offset; 44 u8 flatness_min_qp; 45 u8 flatness_max_qp; 46 u8 rc_quant_incr_limit0; 47 u8 rc_quant_incr_limit1; 48 struct drm_dsc_rc_range_parameters rc_range_params[DSC_NUM_BUF_RANGES]; 49 }; 50 51 /* 52 * Selected Rate Control Related Parameter Recommended Values 53 * from DSC_v1.11 spec & C Model release: DSC_model_20161212 54 */ 55 static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { 56 { 57 /* 6BPP/8BPC */ 58 { 768, 15, 6144, 3, 13, 11, 11, { 59 { 0, 4, 0 }, { 1, 6, -2 }, { 3, 8, -2 }, { 4, 8, -4 }, 60 { 5, 9, -6 }, { 5, 9, -6 }, { 6, 9, -6 }, { 6, 10, -8 }, 61 { 7, 11, -8 }, { 8, 12, -10 }, { 9, 12, -10 }, { 10, 12, -12 }, 62 { 10, 12, -12 }, { 11, 12, -12 }, { 13, 14, -12 } 63 } 64 }, 65 /* 6BPP/10BPC */ 66 { 768, 15, 6144, 7, 17, 15, 15, { 67 { 0, 8, 0 }, { 3, 10, -2 }, { 7, 12, -2 }, { 8, 12, -4 }, 68 { 9, 13, -6 }, { 9, 13, -6 }, { 10, 13, -6 }, { 10, 14, -8 }, 69 { 11, 15, -8 }, { 12, 16, -10 }, { 13, 16, -10 }, 70 { 14, 16, -12 }, { 14, 16, -12 }, { 15, 16, -12 }, 71 { 17, 18, -12 } 72 } 73 }, 74 /* 6BPP/12BPC */ 75 { 768, 15, 6144, 11, 21, 19, 19, { 76 { 0, 12, 0 }, { 5, 14, -2 }, { 11, 16, -2 }, { 12, 16, -4 }, 77 { 13, 17, -6 }, { 13, 17, -6 }, { 14, 17, -6 }, { 14, 18, -8 }, 78 { 15, 19, -8 }, { 16, 20, -10 }, { 17, 20, -10 }, 79 { 18, 20, -12 }, { 18, 20, -12 }, { 19, 20, -12 }, 80 { 21, 22, -12 } 81 } 82 }, 83 /* 6BPP/14BPC */ 84 { 768, 15, 6144, 15, 25, 23, 27, { 85 { 0, 16, 0 }, { 7, 18, -2 }, { 15, 20, -2 }, { 16, 20, -4 }, 86 { 17, 21, -6 }, { 17, 21, -6 }, { 18, 21, -6 }, { 18, 22, -8 }, 87 { 19, 23, -8 }, { 20, 24, -10 }, { 21, 24, -10 }, 88 { 22, 24, -12 }, { 22, 24, -12 }, { 23, 24, -12 }, 89 { 25, 26, -12 } 90 } 91 }, 92 /* 6BPP/16BPC */ 93 { 768, 15, 6144, 19, 29, 27, 27, { 94 { 0, 20, 0 }, { 9, 22, -2 }, { 19, 24, -2 }, { 20, 24, -4 }, 95 { 21, 25, -6 }, { 21, 25, -6 }, { 22, 25, -6 }, { 22, 26, -8 }, 96 { 23, 27, -8 }, { 24, 28, -10 }, { 25, 28, -10 }, 97 { 26, 28, -12 }, { 26, 28, -12 }, { 27, 28, -12 }, 98 { 29, 30, -12 } 99 } 100 }, 101 }, 102 { 103 /* 8BPP/8BPC */ 104 { 512, 12, 6144, 3, 12, 11, 11, { 105 { 0, 4, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 1, 6, -2 }, 106 { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 }, 107 { 3, 9, -8 }, { 3, 10, -10 }, { 5, 11, -10 }, { 5, 12, -12 }, 108 { 5, 13, -12 }, { 7, 13, -12 }, { 13, 15, -12 } 109 } 110 }, 111 /* 8BPP/10BPC */ 112 { 512, 12, 6144, 7, 16, 15, 15, { 113 { 0, 4, 2 }, { 4, 8, 0 }, { 5, 9, 0 }, { 5, 10, -2 }, 114 { 7, 11, -4 }, { 7, 11, -6 }, { 7, 11, -8 }, { 7, 12, -8 }, 115 { 7, 13, -8 }, { 7, 14, -10 }, { 9, 15, -10 }, { 9, 16, -12 }, 116 { 9, 17, -12 }, { 11, 17, -12 }, { 17, 19, -12 } 117 } 118 }, 119 /* 8BPP/12BPC */ 120 { 512, 12, 6144, 11, 20, 19, 19, { 121 { 0, 12, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 9, 14, -2 }, 122 { 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 }, 123 { 11, 17, -8 }, { 11, 18, -10 }, { 13, 19, -10 }, 124 { 13, 20, -12 }, { 13, 21, -12 }, { 15, 21, -12 }, 125 { 21, 23, -12 } 126 } 127 }, 128 /* 8BPP/14BPC */ 129 { 512, 12, 6144, 15, 24, 23, 23, { 130 { 0, 12, 0 }, { 5, 13, 0 }, { 11, 15, 0 }, { 12, 17, -2 }, 131 { 15, 19, -4 }, { 15, 19, -6 }, { 15, 19, -8 }, { 15, 20, -8 }, 132 { 15, 21, -8 }, { 15, 22, -10 }, { 17, 22, -10 }, 133 { 17, 23, -12 }, { 17, 23, -12 }, { 21, 24, -12 }, 134 { 24, 25, -12 } 135 } 136 }, 137 /* 8BPP/16BPC */ 138 { 512, 12, 6144, 19, 28, 27, 27, { 139 { 0, 12, 2 }, { 6, 14, 0 }, { 13, 17, 0 }, { 15, 20, -2 }, 140 { 19, 23, -4 }, { 19, 23, -6 }, { 19, 23, -8 }, { 19, 24, -8 }, 141 { 19, 25, -8 }, { 19, 26, -10 }, { 21, 26, -10 }, 142 { 21, 27, -12 }, { 21, 27, -12 }, { 25, 28, -12 }, 143 { 28, 29, -12 } 144 } 145 }, 146 }, 147 { 148 /* 10BPP/8BPC */ 149 { 410, 15, 5632, 3, 12, 11, 11, { 150 { 0, 3, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 2, 6, -2 }, 151 { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 }, 152 { 3, 9, -8 }, { 3, 9, -10 }, { 5, 10, -10 }, { 5, 10, -10 }, 153 { 5, 11, -12 }, { 7, 11, -12 }, { 11, 12, -12 } 154 } 155 }, 156 /* 10BPP/10BPC */ 157 { 410, 15, 5632, 7, 16, 15, 15, { 158 { 0, 7, 2 }, { 4, 8, 0 }, { 5, 9, 0 }, { 6, 10, -2 }, 159 { 7, 11, -4 }, { 7, 11, -6 }, { 7, 11, -8 }, { 7, 12, -8 }, 160 { 7, 13, -8 }, { 7, 13, -10 }, { 9, 14, -10 }, { 9, 14, -10 }, 161 { 9, 15, -12 }, { 11, 15, -12 }, { 15, 16, -12 } 162 } 163 }, 164 /* 10BPP/12BPC */ 165 { 410, 15, 5632, 11, 20, 19, 19, { 166 { 0, 11, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 10, 14, -2 }, 167 { 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 }, 168 { 11, 17, -8 }, { 11, 17, -10 }, { 13, 18, -10 }, 169 { 13, 18, -10 }, { 13, 19, -12 }, { 15, 19, -12 }, 170 { 19, 20, -12 } 171 } 172 }, 173 /* 10BPP/14BPC */ 174 { 410, 15, 5632, 15, 24, 23, 23, { 175 { 0, 11, 2 }, { 5, 13, 0 }, { 11, 15, 0 }, { 13, 18, -2 }, 176 { 15, 19, -4 }, { 15, 19, -6 }, { 15, 19, -8 }, { 15, 20, -8 }, 177 { 15, 21, -8 }, { 15, 21, -10 }, { 17, 22, -10 }, 178 { 17, 22, -10 }, { 17, 23, -12 }, { 19, 23, -12 }, 179 { 23, 24, -12 } 180 } 181 }, 182 /* 10BPP/16BPC */ 183 { 410, 15, 5632, 19, 28, 27, 27, { 184 { 0, 11, 2 }, { 6, 14, 0 }, { 13, 17, 0 }, { 16, 20, -2 }, 185 { 19, 23, -4 }, { 19, 23, -6 }, { 19, 23, -8 }, { 19, 24, -8 }, 186 { 19, 25, -8 }, { 19, 25, -10 }, { 21, 26, -10 }, 187 { 21, 26, -10 }, { 21, 27, -12 }, { 23, 27, -12 }, 188 { 27, 28, -12 } 189 } 190 }, 191 }, 192 { 193 /* 12BPP/8BPC */ 194 { 341, 15, 2048, 3, 12, 11, 11, { 195 { 0, 2, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 1, 6, -2 }, 196 { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 }, 197 { 3, 9, -8 }, { 3, 10, -10 }, { 5, 11, -10 }, 198 { 5, 12, -12 }, { 5, 13, -12 }, { 7, 13, -12 }, { 13, 15, -12 } 199 } 200 }, 201 /* 12BPP/10BPC */ 202 { 341, 15, 2048, 7, 16, 15, 15, { 203 { 0, 2, 2 }, { 2, 5, 0 }, { 3, 7, 0 }, { 4, 8, -2 }, 204 { 6, 9, -4 }, { 7, 10, -6 }, { 7, 11, -8 }, { 7, 12, -8 }, 205 { 7, 13, -8 }, { 7, 14, -10 }, { 9, 15, -10 }, { 9, 16, -12 }, 206 { 9, 17, -12 }, { 11, 17, -12 }, { 17, 19, -12 } 207 } 208 }, 209 /* 12BPP/12BPC */ 210 { 341, 15, 2048, 11, 20, 19, 19, { 211 { 0, 6, 2 }, { 4, 9, 0 }, { 7, 11, 0 }, { 8, 12, -2 }, 212 { 10, 13, -4 }, { 11, 14, -6 }, { 11, 15, -8 }, { 11, 16, -8 }, 213 { 11, 17, -8 }, { 11, 18, -10 }, { 13, 19, -10 }, 214 { 13, 20, -12 }, { 13, 21, -12 }, { 15, 21, -12 }, 215 { 21, 23, -12 } 216 } 217 }, 218 /* 12BPP/14BPC */ 219 { 341, 15, 2048, 15, 24, 23, 23, { 220 { 0, 6, 2 }, { 7, 10, 0 }, { 9, 13, 0 }, { 11, 16, -2 }, 221 { 14, 17, -4 }, { 15, 18, -6 }, { 15, 19, -8 }, { 15, 20, -8 }, 222 { 15, 20, -8 }, { 15, 21, -10 }, { 17, 21, -10 }, 223 { 17, 21, -12 }, { 17, 21, -12 }, { 19, 22, -12 }, 224 { 22, 23, -12 } 225 } 226 }, 227 /* 12BPP/16BPC */ 228 { 341, 15, 2048, 19, 28, 27, 27, { 229 { 0, 6, 2 }, { 6, 11, 0 }, { 11, 15, 0 }, { 14, 18, -2 }, 230 { 18, 21, -4 }, { 19, 22, -6 }, { 19, 23, -8 }, { 19, 24, -8 }, 231 { 19, 24, -8 }, { 19, 25, -10 }, { 21, 25, -10 }, 232 { 21, 25, -12 }, { 21, 25, -12 }, { 23, 26, -12 }, 233 { 26, 27, -12 } 234 } 235 }, 236 }, 237 { 238 /* 15BPP/8BPC */ 239 { 273, 15, 2048, 3, 12, 11, 11, { 240 { 0, 0, 10 }, { 0, 1, 8 }, { 0, 1, 6 }, { 0, 2, 4 }, 241 { 1, 2, 2 }, { 1, 3, 0 }, { 1, 3, -2 }, { 2, 4, -4 }, 242 { 2, 5, -6 }, { 3, 5, -8 }, { 4, 6, -10 }, { 4, 7, -10 }, 243 { 5, 7, -12 }, { 7, 8, -12 }, { 8, 9, -12 } 244 } 245 }, 246 /* 15BPP/10BPC */ 247 { 273, 15, 2048, 7, 16, 15, 15, { 248 { 0, 2, 10 }, { 2, 5, 8 }, { 3, 5, 6 }, { 4, 6, 4 }, 249 { 5, 6, 2 }, { 5, 7, 0 }, { 5, 7, -2 }, { 6, 8, -4 }, 250 { 6, 9, -6 }, { 7, 9, -8 }, { 8, 10, -10 }, { 8, 11, -10 }, 251 { 9, 11, -12 }, { 11, 12, -12 }, { 12, 13, -12 } 252 } 253 }, 254 /* 15BPP/12BPC */ 255 { 273, 15, 2048, 11, 20, 19, 19, { 256 { 0, 4, 10 }, { 2, 7, 8 }, { 4, 9, 6 }, { 6, 11, 4 }, 257 { 9, 11, 2 }, { 9, 11, 0 }, { 9, 12, -2 }, { 10, 12, -4 }, 258 { 11, 13, -6 }, { 11, 13, -8 }, { 12, 14, -10 }, 259 { 13, 15, -10 }, { 13, 15, -12 }, { 15, 16, -12 }, 260 { 16, 17, -12 } 261 } 262 }, 263 /* 15BPP/14BPC */ 264 { 273, 15, 2048, 15, 24, 23, 23, { 265 { 0, 4, 10 }, { 3, 8, 8 }, { 6, 11, 6 }, { 9, 14, 4 }, 266 { 13, 15, 2 }, { 13, 15, 0 }, { 13, 16, -2 }, { 14, 16, -4 }, 267 { 15, 17, -6 }, { 15, 17, -8 }, { 16, 18, -10 }, 268 { 17, 19, -10 }, { 17, 19, -12 }, { 19, 20, -12 }, 269 { 20, 21, -12 } 270 } 271 }, 272 /* 15BPP/16BPC */ 273 { 273, 15, 2048, 19, 28, 27, 27, { 274 { 0, 4, 10 }, { 4, 9, 8 }, { 8, 13, 6 }, { 12, 17, 4 }, 275 { 17, 19, 2 }, { 17, 20, 0 }, { 17, 20, -2 }, { 18, 20, -4 }, 276 { 19, 21, -6 }, { 19, 21, -8 }, { 20, 22, -10 }, 277 { 21, 23, -10 }, { 21, 23, -12 }, { 23, 24, -12 }, 278 { 24, 25, -12 } 279 } 280 } 281 } 282 283 }; 284 285 static int get_row_index_for_rc_params(u16 compressed_bpp) 286 { 287 switch (compressed_bpp) { 288 case 6: 289 return ROW_INDEX_6BPP; 290 case 8: 291 return ROW_INDEX_8BPP; 292 case 10: 293 return ROW_INDEX_10BPP; 294 case 12: 295 return ROW_INDEX_12BPP; 296 case 15: 297 return ROW_INDEX_15BPP; 298 default: 299 return -EINVAL; 300 } 301 } 302 303 static int get_column_index_for_rc_params(u8 bits_per_component) 304 { 305 switch (bits_per_component) { 306 case 8: 307 return COLUMN_INDEX_8BPC; 308 case 10: 309 return COLUMN_INDEX_10BPC; 310 case 12: 311 return COLUMN_INDEX_12BPC; 312 case 14: 313 return COLUMN_INDEX_14BPC; 314 case 16: 315 return COLUMN_INDEX_16BPC; 316 default: 317 return -EINVAL; 318 } 319 } 320 321 static const struct rc_parameters *get_rc_params(u16 compressed_bpp, 322 u8 bits_per_component) 323 { 324 int row_index, column_index; 325 326 row_index = get_row_index_for_rc_params(compressed_bpp); 327 if (row_index < 0) 328 return NULL; 329 330 column_index = get_column_index_for_rc_params(bits_per_component); 331 if (column_index < 0) 332 return NULL; 333 334 return &rc_parameters[row_index][column_index]; 335 } 336 337 bool intel_dsc_source_support(const struct intel_crtc_state *crtc_state) 338 { 339 const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 340 struct drm_i915_private *i915 = to_i915(crtc->base.dev); 341 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 342 enum pipe pipe = crtc->pipe; 343 344 if (!INTEL_INFO(i915)->display.has_dsc) 345 return false; 346 347 /* On TGL, DSC is supported on all Pipes */ 348 if (DISPLAY_VER(i915) >= 12) 349 return true; 350 351 if (DISPLAY_VER(i915) >= 11 && 352 (pipe != PIPE_A || cpu_transcoder == TRANSCODER_EDP || 353 cpu_transcoder == TRANSCODER_DSI_0 || 354 cpu_transcoder == TRANSCODER_DSI_1)) 355 return true; 356 357 return false; 358 } 359 360 static bool is_pipe_dsc(const struct intel_crtc_state *crtc_state) 361 { 362 const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 363 const struct drm_i915_private *i915 = to_i915(crtc->base.dev); 364 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 365 366 if (DISPLAY_VER(i915) >= 12) 367 return true; 368 369 if (cpu_transcoder == TRANSCODER_EDP || 370 cpu_transcoder == TRANSCODER_DSI_0 || 371 cpu_transcoder == TRANSCODER_DSI_1) 372 return false; 373 374 /* There's no pipe A DSC engine on ICL */ 375 drm_WARN_ON(&i915->drm, crtc->pipe == PIPE_A); 376 377 return true; 378 } 379 380 static void 381 calculate_rc_params(struct rc_parameters *rc, 382 struct drm_dsc_config *vdsc_cfg) 383 { 384 int bpc = vdsc_cfg->bits_per_component; 385 int bpp = vdsc_cfg->bits_per_pixel >> 4; 386 int ofs_und6[] = { 0, -2, -2, -4, -6, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12 }; 387 int ofs_und8[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 }; 388 int ofs_und12[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 }; 389 int ofs_und15[] = { 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12 }; 390 int qp_bpc_modifier = (bpc - 8) * 2; 391 u32 res, buf_i, bpp_i; 392 393 if (vdsc_cfg->slice_height >= 8) 394 rc->first_line_bpg_offset = 395 12 + DIV_ROUND_UP((9 * min(34, vdsc_cfg->slice_height - 8)), 100); 396 else 397 rc->first_line_bpg_offset = 2 * (vdsc_cfg->slice_height - 1); 398 399 /* Our hw supports only 444 modes as of today */ 400 if (bpp >= 12) 401 rc->initial_offset = 2048; 402 else if (bpp >= 10) 403 rc->initial_offset = 5632 - DIV_ROUND_UP(((bpp - 10) * 3584), 2); 404 else if (bpp >= 8) 405 rc->initial_offset = 6144 - DIV_ROUND_UP(((bpp - 8) * 512), 2); 406 else 407 rc->initial_offset = 6144; 408 409 /* initial_xmit_delay = rc_model_size/2/compression_bpp */ 410 rc->initial_xmit_delay = DIV_ROUND_UP(DSC_RC_MODEL_SIZE_CONST, 2 * bpp); 411 412 rc->flatness_min_qp = 3 + qp_bpc_modifier; 413 rc->flatness_max_qp = 12 + qp_bpc_modifier; 414 415 rc->rc_quant_incr_limit0 = 11 + qp_bpc_modifier; 416 rc->rc_quant_incr_limit1 = 11 + qp_bpc_modifier; 417 418 bpp_i = (2 * (bpp - 6)); 419 for (buf_i = 0; buf_i < DSC_NUM_BUF_RANGES; buf_i++) { 420 /* Read range_minqp and range_max_qp from qp tables */ 421 rc->rc_range_params[buf_i].range_min_qp = 422 intel_lookup_range_min_qp(bpc, buf_i, bpp_i); 423 rc->rc_range_params[buf_i].range_max_qp = 424 intel_lookup_range_max_qp(bpc, buf_i, bpp_i); 425 426 /* Calculate range_bgp_offset */ 427 if (bpp <= 6) { 428 rc->rc_range_params[buf_i].range_bpg_offset = ofs_und6[buf_i]; 429 } else if (bpp <= 8) { 430 res = DIV_ROUND_UP(((bpp - 6) * (ofs_und8[buf_i] - ofs_und6[buf_i])), 2); 431 rc->rc_range_params[buf_i].range_bpg_offset = 432 ofs_und6[buf_i] + res; 433 } else if (bpp <= 12) { 434 rc->rc_range_params[buf_i].range_bpg_offset = 435 ofs_und8[buf_i]; 436 } else if (bpp <= 15) { 437 res = DIV_ROUND_UP(((bpp - 12) * (ofs_und15[buf_i] - ofs_und12[buf_i])), 3); 438 rc->rc_range_params[buf_i].range_bpg_offset = 439 ofs_und12[buf_i] + res; 440 } else { 441 rc->rc_range_params[buf_i].range_bpg_offset = 442 ofs_und15[buf_i]; 443 } 444 } 445 } 446 447 int intel_dsc_compute_params(struct intel_encoder *encoder, 448 struct intel_crtc_state *pipe_config) 449 { 450 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 451 struct drm_dsc_config *vdsc_cfg = &pipe_config->dsc.config; 452 u16 compressed_bpp = pipe_config->dsc.compressed_bpp; 453 const struct rc_parameters *rc_params; 454 struct rc_parameters *rc = NULL; 455 u8 i = 0; 456 457 vdsc_cfg->pic_width = pipe_config->hw.adjusted_mode.crtc_hdisplay; 458 vdsc_cfg->pic_height = pipe_config->hw.adjusted_mode.crtc_vdisplay; 459 vdsc_cfg->slice_width = DIV_ROUND_UP(vdsc_cfg->pic_width, 460 pipe_config->dsc.slice_count); 461 462 /* Gen 11 does not support YCbCr */ 463 vdsc_cfg->simple_422 = false; 464 /* Gen 11 does not support VBR */ 465 vdsc_cfg->vbr_enable = false; 466 467 /* Gen 11 only supports integral values of bpp */ 468 vdsc_cfg->bits_per_pixel = compressed_bpp << 4; 469 vdsc_cfg->bits_per_component = pipe_config->pipe_bpp / 3; 470 471 for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++) { 472 /* 473 * six 0s are appended to the lsb of each threshold value 474 * internally in h/w. 475 * Only 8 bits are allowed for programming RcBufThreshold 476 */ 477 vdsc_cfg->rc_buf_thresh[i] = rc_buf_thresh[i] >> 6; 478 } 479 480 /* 481 * For 6bpp, RC Buffer threshold 12 and 13 need a different value 482 * as per C Model 483 */ 484 if (compressed_bpp == 6) { 485 vdsc_cfg->rc_buf_thresh[12] = 0x7C; 486 vdsc_cfg->rc_buf_thresh[13] = 0x7D; 487 } 488 489 /* 490 * From XE_LPD onwards we supports compression bpps in steps of 1 491 * upto uncompressed bpp-1, hence add calculations for all the rc 492 * parameters 493 */ 494 if (DISPLAY_VER(dev_priv) >= 13) { 495 rc = kmalloc(sizeof(*rc), GFP_KERNEL); 496 if (!rc) 497 return -ENOMEM; 498 499 calculate_rc_params(rc, vdsc_cfg); 500 rc_params = rc; 501 } else { 502 rc_params = get_rc_params(compressed_bpp, 503 vdsc_cfg->bits_per_component); 504 if (!rc_params) 505 return -EINVAL; 506 } 507 508 vdsc_cfg->first_line_bpg_offset = rc_params->first_line_bpg_offset; 509 vdsc_cfg->initial_xmit_delay = rc_params->initial_xmit_delay; 510 vdsc_cfg->initial_offset = rc_params->initial_offset; 511 vdsc_cfg->flatness_min_qp = rc_params->flatness_min_qp; 512 vdsc_cfg->flatness_max_qp = rc_params->flatness_max_qp; 513 vdsc_cfg->rc_quant_incr_limit0 = rc_params->rc_quant_incr_limit0; 514 vdsc_cfg->rc_quant_incr_limit1 = rc_params->rc_quant_incr_limit1; 515 516 for (i = 0; i < DSC_NUM_BUF_RANGES; i++) { 517 vdsc_cfg->rc_range_params[i].range_min_qp = 518 rc_params->rc_range_params[i].range_min_qp; 519 vdsc_cfg->rc_range_params[i].range_max_qp = 520 rc_params->rc_range_params[i].range_max_qp; 521 /* 522 * Range BPG Offset uses 2's complement and is only a 6 bits. So 523 * mask it to get only 6 bits. 524 */ 525 vdsc_cfg->rc_range_params[i].range_bpg_offset = 526 rc_params->rc_range_params[i].range_bpg_offset & 527 DSC_RANGE_BPG_OFFSET_MASK; 528 } 529 530 /* 531 * BitsPerComponent value determines mux_word_size: 532 * When BitsPerComponent is less than or 10bpc, muxWordSize will be equal to 533 * 48 bits otherwise 64 534 */ 535 if (vdsc_cfg->bits_per_component <= 10) 536 vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC; 537 else 538 vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC; 539 540 /* InitialScaleValue is a 6 bit value with 3 fractional bits (U3.3) */ 541 vdsc_cfg->initial_scale_value = (vdsc_cfg->rc_model_size << 3) / 542 (vdsc_cfg->rc_model_size - vdsc_cfg->initial_offset); 543 544 kfree(rc); 545 546 return 0; 547 } 548 549 enum intel_display_power_domain 550 intel_dsc_power_domain(const struct intel_crtc_state *crtc_state) 551 { 552 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 553 struct drm_i915_private *i915 = to_i915(crtc->base.dev); 554 enum pipe pipe = crtc->pipe; 555 556 /* 557 * VDSC/joining uses a separate power well, PW2, and requires 558 * POWER_DOMAIN_TRANSCODER_VDSC_PW2 power domain in two cases: 559 * 560 * - ICL eDP/DSI transcoder 561 * - Display version 12 (except RKL) pipe A 562 * 563 * For any other pipe, VDSC/joining uses the power well associated with 564 * the pipe in use. Hence another reference on the pipe power domain 565 * will suffice. (Except no VDSC/joining on ICL pipe A.) 566 */ 567 if (DISPLAY_VER(i915) == 12 && !IS_ROCKETLAKE(i915) && pipe == PIPE_A) 568 return POWER_DOMAIN_TRANSCODER_VDSC_PW2; 569 else if (is_pipe_dsc(crtc_state)) 570 return POWER_DOMAIN_PIPE(pipe); 571 else 572 return POWER_DOMAIN_TRANSCODER_VDSC_PW2; 573 } 574 575 static void intel_dsc_pps_configure(const struct intel_crtc_state *crtc_state) 576 { 577 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 578 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 579 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; 580 enum pipe pipe = crtc->pipe; 581 u32 pps_val = 0; 582 u32 rc_buf_thresh_dword[4]; 583 u32 rc_range_params_dword[8]; 584 u8 num_vdsc_instances = (crtc_state->dsc.dsc_split) ? 2 : 1; 585 int i = 0; 586 587 if (crtc_state->bigjoiner) 588 num_vdsc_instances *= 2; 589 590 /* Populate PICTURE_PARAMETER_SET_0 registers */ 591 pps_val = DSC_VER_MAJ | vdsc_cfg->dsc_version_minor << 592 DSC_VER_MIN_SHIFT | 593 vdsc_cfg->bits_per_component << DSC_BPC_SHIFT | 594 vdsc_cfg->line_buf_depth << DSC_LINE_BUF_DEPTH_SHIFT; 595 if (vdsc_cfg->block_pred_enable) 596 pps_val |= DSC_BLOCK_PREDICTION; 597 if (vdsc_cfg->convert_rgb) 598 pps_val |= DSC_COLOR_SPACE_CONVERSION; 599 if (vdsc_cfg->simple_422) 600 pps_val |= DSC_422_ENABLE; 601 if (vdsc_cfg->vbr_enable) 602 pps_val |= DSC_VBR_ENABLE; 603 drm_info(&dev_priv->drm, "PPS0 = 0x%08x\n", pps_val); 604 if (!is_pipe_dsc(crtc_state)) { 605 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_0, 606 pps_val); 607 /* 608 * If 2 VDSC instances are needed, configure PPS for second 609 * VDSC 610 */ 611 if (crtc_state->dsc.dsc_split) 612 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_0, 613 pps_val); 614 } else { 615 intel_de_write(dev_priv, 616 ICL_DSC0_PICTURE_PARAMETER_SET_0(pipe), 617 pps_val); 618 if (crtc_state->dsc.dsc_split) 619 intel_de_write(dev_priv, 620 ICL_DSC1_PICTURE_PARAMETER_SET_0(pipe), 621 pps_val); 622 } 623 624 /* Populate PICTURE_PARAMETER_SET_1 registers */ 625 pps_val = 0; 626 pps_val |= DSC_BPP(vdsc_cfg->bits_per_pixel); 627 drm_info(&dev_priv->drm, "PPS1 = 0x%08x\n", pps_val); 628 if (!is_pipe_dsc(crtc_state)) { 629 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_1, 630 pps_val); 631 /* 632 * If 2 VDSC instances are needed, configure PPS for second 633 * VDSC 634 */ 635 if (crtc_state->dsc.dsc_split) 636 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_1, 637 pps_val); 638 } else { 639 intel_de_write(dev_priv, 640 ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe), 641 pps_val); 642 if (crtc_state->dsc.dsc_split) 643 intel_de_write(dev_priv, 644 ICL_DSC1_PICTURE_PARAMETER_SET_1(pipe), 645 pps_val); 646 } 647 648 /* Populate PICTURE_PARAMETER_SET_2 registers */ 649 pps_val = 0; 650 pps_val |= DSC_PIC_HEIGHT(vdsc_cfg->pic_height) | 651 DSC_PIC_WIDTH(vdsc_cfg->pic_width / num_vdsc_instances); 652 drm_info(&dev_priv->drm, "PPS2 = 0x%08x\n", pps_val); 653 if (!is_pipe_dsc(crtc_state)) { 654 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_2, 655 pps_val); 656 /* 657 * If 2 VDSC instances are needed, configure PPS for second 658 * VDSC 659 */ 660 if (crtc_state->dsc.dsc_split) 661 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_2, 662 pps_val); 663 } else { 664 intel_de_write(dev_priv, 665 ICL_DSC0_PICTURE_PARAMETER_SET_2(pipe), 666 pps_val); 667 if (crtc_state->dsc.dsc_split) 668 intel_de_write(dev_priv, 669 ICL_DSC1_PICTURE_PARAMETER_SET_2(pipe), 670 pps_val); 671 } 672 673 /* Populate PICTURE_PARAMETER_SET_3 registers */ 674 pps_val = 0; 675 pps_val |= DSC_SLICE_HEIGHT(vdsc_cfg->slice_height) | 676 DSC_SLICE_WIDTH(vdsc_cfg->slice_width); 677 drm_info(&dev_priv->drm, "PPS3 = 0x%08x\n", pps_val); 678 if (!is_pipe_dsc(crtc_state)) { 679 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_3, 680 pps_val); 681 /* 682 * If 2 VDSC instances are needed, configure PPS for second 683 * VDSC 684 */ 685 if (crtc_state->dsc.dsc_split) 686 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_3, 687 pps_val); 688 } else { 689 intel_de_write(dev_priv, 690 ICL_DSC0_PICTURE_PARAMETER_SET_3(pipe), 691 pps_val); 692 if (crtc_state->dsc.dsc_split) 693 intel_de_write(dev_priv, 694 ICL_DSC1_PICTURE_PARAMETER_SET_3(pipe), 695 pps_val); 696 } 697 698 /* Populate PICTURE_PARAMETER_SET_4 registers */ 699 pps_val = 0; 700 pps_val |= DSC_INITIAL_XMIT_DELAY(vdsc_cfg->initial_xmit_delay) | 701 DSC_INITIAL_DEC_DELAY(vdsc_cfg->initial_dec_delay); 702 drm_info(&dev_priv->drm, "PPS4 = 0x%08x\n", pps_val); 703 if (!is_pipe_dsc(crtc_state)) { 704 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_4, 705 pps_val); 706 /* 707 * If 2 VDSC instances are needed, configure PPS for second 708 * VDSC 709 */ 710 if (crtc_state->dsc.dsc_split) 711 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_4, 712 pps_val); 713 } else { 714 intel_de_write(dev_priv, 715 ICL_DSC0_PICTURE_PARAMETER_SET_4(pipe), 716 pps_val); 717 if (crtc_state->dsc.dsc_split) 718 intel_de_write(dev_priv, 719 ICL_DSC1_PICTURE_PARAMETER_SET_4(pipe), 720 pps_val); 721 } 722 723 /* Populate PICTURE_PARAMETER_SET_5 registers */ 724 pps_val = 0; 725 pps_val |= DSC_SCALE_INC_INT(vdsc_cfg->scale_increment_interval) | 726 DSC_SCALE_DEC_INT(vdsc_cfg->scale_decrement_interval); 727 drm_info(&dev_priv->drm, "PPS5 = 0x%08x\n", pps_val); 728 if (!is_pipe_dsc(crtc_state)) { 729 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_5, 730 pps_val); 731 /* 732 * If 2 VDSC instances are needed, configure PPS for second 733 * VDSC 734 */ 735 if (crtc_state->dsc.dsc_split) 736 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_5, 737 pps_val); 738 } else { 739 intel_de_write(dev_priv, 740 ICL_DSC0_PICTURE_PARAMETER_SET_5(pipe), 741 pps_val); 742 if (crtc_state->dsc.dsc_split) 743 intel_de_write(dev_priv, 744 ICL_DSC1_PICTURE_PARAMETER_SET_5(pipe), 745 pps_val); 746 } 747 748 /* Populate PICTURE_PARAMETER_SET_6 registers */ 749 pps_val = 0; 750 pps_val |= DSC_INITIAL_SCALE_VALUE(vdsc_cfg->initial_scale_value) | 751 DSC_FIRST_LINE_BPG_OFFSET(vdsc_cfg->first_line_bpg_offset) | 752 DSC_FLATNESS_MIN_QP(vdsc_cfg->flatness_min_qp) | 753 DSC_FLATNESS_MAX_QP(vdsc_cfg->flatness_max_qp); 754 drm_info(&dev_priv->drm, "PPS6 = 0x%08x\n", pps_val); 755 if (!is_pipe_dsc(crtc_state)) { 756 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_6, 757 pps_val); 758 /* 759 * If 2 VDSC instances are needed, configure PPS for second 760 * VDSC 761 */ 762 if (crtc_state->dsc.dsc_split) 763 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_6, 764 pps_val); 765 } else { 766 intel_de_write(dev_priv, 767 ICL_DSC0_PICTURE_PARAMETER_SET_6(pipe), 768 pps_val); 769 if (crtc_state->dsc.dsc_split) 770 intel_de_write(dev_priv, 771 ICL_DSC1_PICTURE_PARAMETER_SET_6(pipe), 772 pps_val); 773 } 774 775 /* Populate PICTURE_PARAMETER_SET_7 registers */ 776 pps_val = 0; 777 pps_val |= DSC_SLICE_BPG_OFFSET(vdsc_cfg->slice_bpg_offset) | 778 DSC_NFL_BPG_OFFSET(vdsc_cfg->nfl_bpg_offset); 779 drm_info(&dev_priv->drm, "PPS7 = 0x%08x\n", pps_val); 780 if (!is_pipe_dsc(crtc_state)) { 781 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_7, 782 pps_val); 783 /* 784 * If 2 VDSC instances are needed, configure PPS for second 785 * VDSC 786 */ 787 if (crtc_state->dsc.dsc_split) 788 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_7, 789 pps_val); 790 } else { 791 intel_de_write(dev_priv, 792 ICL_DSC0_PICTURE_PARAMETER_SET_7(pipe), 793 pps_val); 794 if (crtc_state->dsc.dsc_split) 795 intel_de_write(dev_priv, 796 ICL_DSC1_PICTURE_PARAMETER_SET_7(pipe), 797 pps_val); 798 } 799 800 /* Populate PICTURE_PARAMETER_SET_8 registers */ 801 pps_val = 0; 802 pps_val |= DSC_FINAL_OFFSET(vdsc_cfg->final_offset) | 803 DSC_INITIAL_OFFSET(vdsc_cfg->initial_offset); 804 drm_info(&dev_priv->drm, "PPS8 = 0x%08x\n", pps_val); 805 if (!is_pipe_dsc(crtc_state)) { 806 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_8, 807 pps_val); 808 /* 809 * If 2 VDSC instances are needed, configure PPS for second 810 * VDSC 811 */ 812 if (crtc_state->dsc.dsc_split) 813 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_8, 814 pps_val); 815 } else { 816 intel_de_write(dev_priv, 817 ICL_DSC0_PICTURE_PARAMETER_SET_8(pipe), 818 pps_val); 819 if (crtc_state->dsc.dsc_split) 820 intel_de_write(dev_priv, 821 ICL_DSC1_PICTURE_PARAMETER_SET_8(pipe), 822 pps_val); 823 } 824 825 /* Populate PICTURE_PARAMETER_SET_9 registers */ 826 pps_val = 0; 827 pps_val |= DSC_RC_MODEL_SIZE(vdsc_cfg->rc_model_size) | 828 DSC_RC_EDGE_FACTOR(DSC_RC_EDGE_FACTOR_CONST); 829 drm_info(&dev_priv->drm, "PPS9 = 0x%08x\n", pps_val); 830 if (!is_pipe_dsc(crtc_state)) { 831 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_9, 832 pps_val); 833 /* 834 * If 2 VDSC instances are needed, configure PPS for second 835 * VDSC 836 */ 837 if (crtc_state->dsc.dsc_split) 838 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_9, 839 pps_val); 840 } else { 841 intel_de_write(dev_priv, 842 ICL_DSC0_PICTURE_PARAMETER_SET_9(pipe), 843 pps_val); 844 if (crtc_state->dsc.dsc_split) 845 intel_de_write(dev_priv, 846 ICL_DSC1_PICTURE_PARAMETER_SET_9(pipe), 847 pps_val); 848 } 849 850 /* Populate PICTURE_PARAMETER_SET_10 registers */ 851 pps_val = 0; 852 pps_val |= DSC_RC_QUANT_INC_LIMIT0(vdsc_cfg->rc_quant_incr_limit0) | 853 DSC_RC_QUANT_INC_LIMIT1(vdsc_cfg->rc_quant_incr_limit1) | 854 DSC_RC_TARGET_OFF_HIGH(DSC_RC_TGT_OFFSET_HI_CONST) | 855 DSC_RC_TARGET_OFF_LOW(DSC_RC_TGT_OFFSET_LO_CONST); 856 drm_info(&dev_priv->drm, "PPS10 = 0x%08x\n", pps_val); 857 if (!is_pipe_dsc(crtc_state)) { 858 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_10, 859 pps_val); 860 /* 861 * If 2 VDSC instances are needed, configure PPS for second 862 * VDSC 863 */ 864 if (crtc_state->dsc.dsc_split) 865 intel_de_write(dev_priv, 866 DSCC_PICTURE_PARAMETER_SET_10, pps_val); 867 } else { 868 intel_de_write(dev_priv, 869 ICL_DSC0_PICTURE_PARAMETER_SET_10(pipe), 870 pps_val); 871 if (crtc_state->dsc.dsc_split) 872 intel_de_write(dev_priv, 873 ICL_DSC1_PICTURE_PARAMETER_SET_10(pipe), 874 pps_val); 875 } 876 877 /* Populate Picture parameter set 16 */ 878 pps_val = 0; 879 pps_val |= DSC_SLICE_CHUNK_SIZE(vdsc_cfg->slice_chunk_size) | 880 DSC_SLICE_PER_LINE((vdsc_cfg->pic_width / num_vdsc_instances) / 881 vdsc_cfg->slice_width) | 882 DSC_SLICE_ROW_PER_FRAME(vdsc_cfg->pic_height / 883 vdsc_cfg->slice_height); 884 drm_info(&dev_priv->drm, "PPS16 = 0x%08x\n", pps_val); 885 if (!is_pipe_dsc(crtc_state)) { 886 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_16, 887 pps_val); 888 /* 889 * If 2 VDSC instances are needed, configure PPS for second 890 * VDSC 891 */ 892 if (crtc_state->dsc.dsc_split) 893 intel_de_write(dev_priv, 894 DSCC_PICTURE_PARAMETER_SET_16, pps_val); 895 } else { 896 intel_de_write(dev_priv, 897 ICL_DSC0_PICTURE_PARAMETER_SET_16(pipe), 898 pps_val); 899 if (crtc_state->dsc.dsc_split) 900 intel_de_write(dev_priv, 901 ICL_DSC1_PICTURE_PARAMETER_SET_16(pipe), 902 pps_val); 903 } 904 905 /* Populate the RC_BUF_THRESH registers */ 906 memset(rc_buf_thresh_dword, 0, sizeof(rc_buf_thresh_dword)); 907 for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++) { 908 rc_buf_thresh_dword[i / 4] |= 909 (u32)(vdsc_cfg->rc_buf_thresh[i] << 910 BITS_PER_BYTE * (i % 4)); 911 drm_info(&dev_priv->drm, " RC_BUF_THRESH%d = 0x%08x\n", i, 912 rc_buf_thresh_dword[i / 4]); 913 } 914 if (!is_pipe_dsc(crtc_state)) { 915 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0, 916 rc_buf_thresh_dword[0]); 917 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0_UDW, 918 rc_buf_thresh_dword[1]); 919 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1, 920 rc_buf_thresh_dword[2]); 921 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1_UDW, 922 rc_buf_thresh_dword[3]); 923 if (crtc_state->dsc.dsc_split) { 924 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0, 925 rc_buf_thresh_dword[0]); 926 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0_UDW, 927 rc_buf_thresh_dword[1]); 928 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1, 929 rc_buf_thresh_dword[2]); 930 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1_UDW, 931 rc_buf_thresh_dword[3]); 932 } 933 } else { 934 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0(pipe), 935 rc_buf_thresh_dword[0]); 936 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0_UDW(pipe), 937 rc_buf_thresh_dword[1]); 938 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1(pipe), 939 rc_buf_thresh_dword[2]); 940 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1_UDW(pipe), 941 rc_buf_thresh_dword[3]); 942 if (crtc_state->dsc.dsc_split) { 943 intel_de_write(dev_priv, 944 ICL_DSC1_RC_BUF_THRESH_0(pipe), 945 rc_buf_thresh_dword[0]); 946 intel_de_write(dev_priv, 947 ICL_DSC1_RC_BUF_THRESH_0_UDW(pipe), 948 rc_buf_thresh_dword[1]); 949 intel_de_write(dev_priv, 950 ICL_DSC1_RC_BUF_THRESH_1(pipe), 951 rc_buf_thresh_dword[2]); 952 intel_de_write(dev_priv, 953 ICL_DSC1_RC_BUF_THRESH_1_UDW(pipe), 954 rc_buf_thresh_dword[3]); 955 } 956 } 957 958 /* Populate the RC_RANGE_PARAMETERS registers */ 959 memset(rc_range_params_dword, 0, sizeof(rc_range_params_dword)); 960 for (i = 0; i < DSC_NUM_BUF_RANGES; i++) { 961 rc_range_params_dword[i / 2] |= 962 (u32)(((vdsc_cfg->rc_range_params[i].range_bpg_offset << 963 RC_BPG_OFFSET_SHIFT) | 964 (vdsc_cfg->rc_range_params[i].range_max_qp << 965 RC_MAX_QP_SHIFT) | 966 (vdsc_cfg->rc_range_params[i].range_min_qp << 967 RC_MIN_QP_SHIFT)) << 16 * (i % 2)); 968 drm_info(&dev_priv->drm, " RC_RANGE_PARAM_%d = 0x%08x\n", i, 969 rc_range_params_dword[i / 2]); 970 } 971 if (!is_pipe_dsc(crtc_state)) { 972 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0, 973 rc_range_params_dword[0]); 974 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0_UDW, 975 rc_range_params_dword[1]); 976 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1, 977 rc_range_params_dword[2]); 978 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1_UDW, 979 rc_range_params_dword[3]); 980 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2, 981 rc_range_params_dword[4]); 982 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2_UDW, 983 rc_range_params_dword[5]); 984 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3, 985 rc_range_params_dword[6]); 986 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3_UDW, 987 rc_range_params_dword[7]); 988 if (crtc_state->dsc.dsc_split) { 989 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_0, 990 rc_range_params_dword[0]); 991 intel_de_write(dev_priv, 992 DSCC_RC_RANGE_PARAMETERS_0_UDW, 993 rc_range_params_dword[1]); 994 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_1, 995 rc_range_params_dword[2]); 996 intel_de_write(dev_priv, 997 DSCC_RC_RANGE_PARAMETERS_1_UDW, 998 rc_range_params_dword[3]); 999 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_2, 1000 rc_range_params_dword[4]); 1001 intel_de_write(dev_priv, 1002 DSCC_RC_RANGE_PARAMETERS_2_UDW, 1003 rc_range_params_dword[5]); 1004 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_3, 1005 rc_range_params_dword[6]); 1006 intel_de_write(dev_priv, 1007 DSCC_RC_RANGE_PARAMETERS_3_UDW, 1008 rc_range_params_dword[7]); 1009 } 1010 } else { 1011 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_0(pipe), 1012 rc_range_params_dword[0]); 1013 intel_de_write(dev_priv, 1014 ICL_DSC0_RC_RANGE_PARAMETERS_0_UDW(pipe), 1015 rc_range_params_dword[1]); 1016 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_1(pipe), 1017 rc_range_params_dword[2]); 1018 intel_de_write(dev_priv, 1019 ICL_DSC0_RC_RANGE_PARAMETERS_1_UDW(pipe), 1020 rc_range_params_dword[3]); 1021 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_2(pipe), 1022 rc_range_params_dword[4]); 1023 intel_de_write(dev_priv, 1024 ICL_DSC0_RC_RANGE_PARAMETERS_2_UDW(pipe), 1025 rc_range_params_dword[5]); 1026 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_3(pipe), 1027 rc_range_params_dword[6]); 1028 intel_de_write(dev_priv, 1029 ICL_DSC0_RC_RANGE_PARAMETERS_3_UDW(pipe), 1030 rc_range_params_dword[7]); 1031 if (crtc_state->dsc.dsc_split) { 1032 intel_de_write(dev_priv, 1033 ICL_DSC1_RC_RANGE_PARAMETERS_0(pipe), 1034 rc_range_params_dword[0]); 1035 intel_de_write(dev_priv, 1036 ICL_DSC1_RC_RANGE_PARAMETERS_0_UDW(pipe), 1037 rc_range_params_dword[1]); 1038 intel_de_write(dev_priv, 1039 ICL_DSC1_RC_RANGE_PARAMETERS_1(pipe), 1040 rc_range_params_dword[2]); 1041 intel_de_write(dev_priv, 1042 ICL_DSC1_RC_RANGE_PARAMETERS_1_UDW(pipe), 1043 rc_range_params_dword[3]); 1044 intel_de_write(dev_priv, 1045 ICL_DSC1_RC_RANGE_PARAMETERS_2(pipe), 1046 rc_range_params_dword[4]); 1047 intel_de_write(dev_priv, 1048 ICL_DSC1_RC_RANGE_PARAMETERS_2_UDW(pipe), 1049 rc_range_params_dword[5]); 1050 intel_de_write(dev_priv, 1051 ICL_DSC1_RC_RANGE_PARAMETERS_3(pipe), 1052 rc_range_params_dword[6]); 1053 intel_de_write(dev_priv, 1054 ICL_DSC1_RC_RANGE_PARAMETERS_3_UDW(pipe), 1055 rc_range_params_dword[7]); 1056 } 1057 } 1058 } 1059 1060 static void intel_dsc_dsi_pps_write(struct intel_encoder *encoder, 1061 const struct intel_crtc_state *crtc_state) 1062 { 1063 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; 1064 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1065 struct mipi_dsi_device *dsi; 1066 struct drm_dsc_picture_parameter_set pps; 1067 enum port port; 1068 1069 drm_dsc_pps_payload_pack(&pps, vdsc_cfg); 1070 1071 for_each_dsi_port(port, intel_dsi->ports) { 1072 dsi = intel_dsi->dsi_hosts[port]->device; 1073 1074 mipi_dsi_picture_parameter_set(dsi, &pps); 1075 mipi_dsi_compression_mode(dsi, true); 1076 } 1077 } 1078 1079 static void intel_dsc_dp_pps_write(struct intel_encoder *encoder, 1080 const struct intel_crtc_state *crtc_state) 1081 { 1082 struct intel_dp *intel_dp = enc_to_intel_dp(encoder); 1083 struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); 1084 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; 1085 struct drm_dsc_pps_infoframe dp_dsc_pps_sdp; 1086 1087 /* Prepare DP SDP PPS header as per DP 1.4 spec, Table 2-123 */ 1088 drm_dsc_dp_pps_header_init(&dp_dsc_pps_sdp.pps_header); 1089 1090 /* Fill the PPS payload bytes as per DSC spec 1.2 Table 4-1 */ 1091 drm_dsc_pps_payload_pack(&dp_dsc_pps_sdp.pps_payload, vdsc_cfg); 1092 1093 dig_port->write_infoframe(encoder, crtc_state, 1094 DP_SDP_PPS, &dp_dsc_pps_sdp, 1095 sizeof(dp_dsc_pps_sdp)); 1096 } 1097 1098 static i915_reg_t dss_ctl1_reg(const struct intel_crtc_state *crtc_state) 1099 { 1100 enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe; 1101 1102 return is_pipe_dsc(crtc_state) ? ICL_PIPE_DSS_CTL1(pipe) : DSS_CTL1; 1103 } 1104 1105 static i915_reg_t dss_ctl2_reg(const struct intel_crtc_state *crtc_state) 1106 { 1107 enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe; 1108 1109 return is_pipe_dsc(crtc_state) ? ICL_PIPE_DSS_CTL2(pipe) : DSS_CTL2; 1110 } 1111 1112 static struct intel_crtc * 1113 _get_crtc_for_pipe(struct drm_i915_private *i915, enum pipe pipe) 1114 { 1115 if (!intel_pipe_valid(i915, pipe)) 1116 return NULL; 1117 1118 return intel_get_crtc_for_pipe(i915, pipe); 1119 } 1120 1121 struct intel_crtc * 1122 intel_dsc_get_bigjoiner_secondary(const struct intel_crtc *primary_crtc) 1123 { 1124 return _get_crtc_for_pipe(to_i915(primary_crtc->base.dev), primary_crtc->pipe + 1); 1125 } 1126 1127 static struct intel_crtc * 1128 intel_dsc_get_bigjoiner_primary(const struct intel_crtc *secondary_crtc) 1129 { 1130 return _get_crtc_for_pipe(to_i915(secondary_crtc->base.dev), secondary_crtc->pipe - 1); 1131 } 1132 1133 void intel_uncompressed_joiner_enable(const struct intel_crtc_state *crtc_state) 1134 { 1135 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1136 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1137 u32 dss_ctl1_val = 0; 1138 1139 if (crtc_state->bigjoiner && !crtc_state->dsc.compression_enable) { 1140 if (crtc_state->bigjoiner_slave) 1141 dss_ctl1_val |= UNCOMPRESSED_JOINER_SLAVE; 1142 else 1143 dss_ctl1_val |= UNCOMPRESSED_JOINER_MASTER; 1144 1145 intel_de_write(dev_priv, dss_ctl1_reg(crtc_state), dss_ctl1_val); 1146 } 1147 } 1148 1149 void intel_dsc_enable(struct intel_encoder *encoder, 1150 const struct intel_crtc_state *crtc_state) 1151 { 1152 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1153 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1154 u32 dss_ctl1_val = 0; 1155 u32 dss_ctl2_val = 0; 1156 1157 if (!crtc_state->dsc.compression_enable) 1158 return; 1159 1160 intel_dsc_pps_configure(crtc_state); 1161 1162 if (!crtc_state->bigjoiner_slave) { 1163 if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI)) 1164 intel_dsc_dsi_pps_write(encoder, crtc_state); 1165 else 1166 intel_dsc_dp_pps_write(encoder, crtc_state); 1167 } 1168 1169 dss_ctl2_val |= LEFT_BRANCH_VDSC_ENABLE; 1170 if (crtc_state->dsc.dsc_split) { 1171 dss_ctl2_val |= RIGHT_BRANCH_VDSC_ENABLE; 1172 dss_ctl1_val |= JOINER_ENABLE; 1173 } 1174 if (crtc_state->bigjoiner) { 1175 dss_ctl1_val |= BIG_JOINER_ENABLE; 1176 if (!crtc_state->bigjoiner_slave) 1177 dss_ctl1_val |= MASTER_BIG_JOINER_ENABLE; 1178 } 1179 intel_de_write(dev_priv, dss_ctl1_reg(crtc_state), dss_ctl1_val); 1180 intel_de_write(dev_priv, dss_ctl2_reg(crtc_state), dss_ctl2_val); 1181 } 1182 1183 void intel_dsc_disable(const struct intel_crtc_state *old_crtc_state) 1184 { 1185 struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc); 1186 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1187 1188 /* Disable only if either of them is enabled */ 1189 if (old_crtc_state->dsc.compression_enable || 1190 old_crtc_state->bigjoiner) { 1191 intel_de_write(dev_priv, dss_ctl1_reg(old_crtc_state), 0); 1192 intel_de_write(dev_priv, dss_ctl2_reg(old_crtc_state), 0); 1193 } 1194 } 1195 1196 void intel_uncompressed_joiner_get_config(struct intel_crtc_state *crtc_state) 1197 { 1198 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1199 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1200 u32 dss_ctl1; 1201 1202 dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc_state)); 1203 if (dss_ctl1 & UNCOMPRESSED_JOINER_MASTER) { 1204 crtc_state->bigjoiner = true; 1205 crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_secondary(crtc); 1206 drm_WARN_ON(&dev_priv->drm, !crtc_state->bigjoiner_linked_crtc); 1207 } else if (dss_ctl1 & UNCOMPRESSED_JOINER_SLAVE) { 1208 crtc_state->bigjoiner = true; 1209 crtc_state->bigjoiner_slave = true; 1210 crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_primary(crtc); 1211 drm_WARN_ON(&dev_priv->drm, !crtc_state->bigjoiner_linked_crtc); 1212 } 1213 } 1214 1215 void intel_dsc_get_config(struct intel_crtc_state *crtc_state) 1216 { 1217 struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; 1218 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1219 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1220 enum pipe pipe = crtc->pipe; 1221 enum intel_display_power_domain power_domain; 1222 intel_wakeref_t wakeref; 1223 u32 dss_ctl1, dss_ctl2, val; 1224 1225 if (!intel_dsc_source_support(crtc_state)) 1226 return; 1227 1228 power_domain = intel_dsc_power_domain(crtc_state); 1229 1230 wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain); 1231 if (!wakeref) 1232 return; 1233 1234 dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc_state)); 1235 dss_ctl2 = intel_de_read(dev_priv, dss_ctl2_reg(crtc_state)); 1236 1237 crtc_state->dsc.compression_enable = dss_ctl2 & LEFT_BRANCH_VDSC_ENABLE; 1238 if (!crtc_state->dsc.compression_enable) 1239 goto out; 1240 1241 crtc_state->dsc.dsc_split = (dss_ctl2 & RIGHT_BRANCH_VDSC_ENABLE) && 1242 (dss_ctl1 & JOINER_ENABLE); 1243 1244 if (dss_ctl1 & BIG_JOINER_ENABLE) { 1245 crtc_state->bigjoiner = true; 1246 1247 if (!(dss_ctl1 & MASTER_BIG_JOINER_ENABLE)) { 1248 crtc_state->bigjoiner_slave = true; 1249 crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_primary(crtc); 1250 } else { 1251 crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_secondary(crtc); 1252 } 1253 drm_WARN_ON(&dev_priv->drm, !crtc_state->bigjoiner_linked_crtc); 1254 } 1255 1256 /* FIXME: add more state readout as needed */ 1257 1258 /* PPS1 */ 1259 if (!is_pipe_dsc(crtc_state)) 1260 val = intel_de_read(dev_priv, DSCA_PICTURE_PARAMETER_SET_1); 1261 else 1262 val = intel_de_read(dev_priv, 1263 ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe)); 1264 vdsc_cfg->bits_per_pixel = val; 1265 crtc_state->dsc.compressed_bpp = vdsc_cfg->bits_per_pixel >> 4; 1266 out: 1267 intel_display_power_put(dev_priv, power_domain, wakeref); 1268 } 1269