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 10 #include <drm/display/drm_dsc_helper.h> 11 12 #include "i915_drv.h" 13 #include "i915_reg.h" 14 #include "intel_crtc.h" 15 #include "intel_de.h" 16 #include "intel_display_types.h" 17 #include "intel_dsi.h" 18 #include "intel_qp_tables.h" 19 #include "intel_vdsc.h" 20 21 enum ROW_INDEX_BPP { 22 ROW_INDEX_6BPP = 0, 23 ROW_INDEX_8BPP, 24 ROW_INDEX_10BPP, 25 ROW_INDEX_12BPP, 26 ROW_INDEX_15BPP, 27 MAX_ROW_INDEX 28 }; 29 30 enum COLUMN_INDEX_BPC { 31 COLUMN_INDEX_8BPC = 0, 32 COLUMN_INDEX_10BPC, 33 COLUMN_INDEX_12BPC, 34 COLUMN_INDEX_14BPC, 35 COLUMN_INDEX_16BPC, 36 MAX_COLUMN_INDEX 37 }; 38 39 /* From DSC_v1.11 spec, rc_parameter_Set syntax element typically constant */ 40 static const u16 rc_buf_thresh[] = { 41 896, 1792, 2688, 3584, 4480, 5376, 6272, 6720, 7168, 7616, 42 7744, 7872, 8000, 8064 43 }; 44 45 struct rc_parameters { 46 u16 initial_xmit_delay; 47 u8 first_line_bpg_offset; 48 u16 initial_offset; 49 u8 flatness_min_qp; 50 u8 flatness_max_qp; 51 u8 rc_quant_incr_limit0; 52 u8 rc_quant_incr_limit1; 53 struct drm_dsc_rc_range_parameters rc_range_params[DSC_NUM_BUF_RANGES]; 54 }; 55 56 /* 57 * Selected Rate Control Related Parameter Recommended Values 58 * from DSC_v1.11 spec & C Model release: DSC_model_20161212 59 */ 60 static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { 61 { 62 /* 6BPP/8BPC */ 63 { 768, 15, 6144, 3, 13, 11, 11, { 64 { 0, 4, 0 }, { 1, 6, -2 }, { 3, 8, -2 }, { 4, 8, -4 }, 65 { 5, 9, -6 }, { 5, 9, -6 }, { 6, 9, -6 }, { 6, 10, -8 }, 66 { 7, 11, -8 }, { 8, 12, -10 }, { 9, 12, -10 }, { 10, 12, -12 }, 67 { 10, 12, -12 }, { 11, 12, -12 }, { 13, 14, -12 } 68 } 69 }, 70 /* 6BPP/10BPC */ 71 { 768, 15, 6144, 7, 17, 15, 15, { 72 { 0, 8, 0 }, { 3, 10, -2 }, { 7, 12, -2 }, { 8, 12, -4 }, 73 { 9, 13, -6 }, { 9, 13, -6 }, { 10, 13, -6 }, { 10, 14, -8 }, 74 { 11, 15, -8 }, { 12, 16, -10 }, { 13, 16, -10 }, 75 { 14, 16, -12 }, { 14, 16, -12 }, { 15, 16, -12 }, 76 { 17, 18, -12 } 77 } 78 }, 79 /* 6BPP/12BPC */ 80 { 768, 15, 6144, 11, 21, 19, 19, { 81 { 0, 12, 0 }, { 5, 14, -2 }, { 11, 16, -2 }, { 12, 16, -4 }, 82 { 13, 17, -6 }, { 13, 17, -6 }, { 14, 17, -6 }, { 14, 18, -8 }, 83 { 15, 19, -8 }, { 16, 20, -10 }, { 17, 20, -10 }, 84 { 18, 20, -12 }, { 18, 20, -12 }, { 19, 20, -12 }, 85 { 21, 22, -12 } 86 } 87 }, 88 /* 6BPP/14BPC */ 89 { 768, 15, 6144, 15, 25, 23, 27, { 90 { 0, 16, 0 }, { 7, 18, -2 }, { 15, 20, -2 }, { 16, 20, -4 }, 91 { 17, 21, -6 }, { 17, 21, -6 }, { 18, 21, -6 }, { 18, 22, -8 }, 92 { 19, 23, -8 }, { 20, 24, -10 }, { 21, 24, -10 }, 93 { 22, 24, -12 }, { 22, 24, -12 }, { 23, 24, -12 }, 94 { 25, 26, -12 } 95 } 96 }, 97 /* 6BPP/16BPC */ 98 { 768, 15, 6144, 19, 29, 27, 27, { 99 { 0, 20, 0 }, { 9, 22, -2 }, { 19, 24, -2 }, { 20, 24, -4 }, 100 { 21, 25, -6 }, { 21, 25, -6 }, { 22, 25, -6 }, { 22, 26, -8 }, 101 { 23, 27, -8 }, { 24, 28, -10 }, { 25, 28, -10 }, 102 { 26, 28, -12 }, { 26, 28, -12 }, { 27, 28, -12 }, 103 { 29, 30, -12 } 104 } 105 }, 106 }, 107 { 108 /* 8BPP/8BPC */ 109 { 512, 12, 6144, 3, 12, 11, 11, { 110 { 0, 4, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 1, 6, -2 }, 111 { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 }, 112 { 3, 9, -8 }, { 3, 10, -10 }, { 5, 11, -10 }, { 5, 12, -12 }, 113 { 5, 13, -12 }, { 7, 13, -12 }, { 13, 15, -12 } 114 } 115 }, 116 /* 8BPP/10BPC */ 117 { 512, 12, 6144, 7, 16, 15, 15, { 118 { 0, 4, 2 }, { 4, 8, 0 }, { 5, 9, 0 }, { 5, 10, -2 }, 119 { 7, 11, -4 }, { 7, 11, -6 }, { 7, 11, -8 }, { 7, 12, -8 }, 120 { 7, 13, -8 }, { 7, 14, -10 }, { 9, 15, -10 }, { 9, 16, -12 }, 121 { 9, 17, -12 }, { 11, 17, -12 }, { 17, 19, -12 } 122 } 123 }, 124 /* 8BPP/12BPC */ 125 { 512, 12, 6144, 11, 20, 19, 19, { 126 { 0, 12, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 9, 14, -2 }, 127 { 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 }, 128 { 11, 17, -8 }, { 11, 18, -10 }, { 13, 19, -10 }, 129 { 13, 20, -12 }, { 13, 21, -12 }, { 15, 21, -12 }, 130 { 21, 23, -12 } 131 } 132 }, 133 /* 8BPP/14BPC */ 134 { 512, 12, 6144, 15, 24, 23, 23, { 135 { 0, 12, 0 }, { 5, 13, 0 }, { 11, 15, 0 }, { 12, 17, -2 }, 136 { 15, 19, -4 }, { 15, 19, -6 }, { 15, 19, -8 }, { 15, 20, -8 }, 137 { 15, 21, -8 }, { 15, 22, -10 }, { 17, 22, -10 }, 138 { 17, 23, -12 }, { 17, 23, -12 }, { 21, 24, -12 }, 139 { 24, 25, -12 } 140 } 141 }, 142 /* 8BPP/16BPC */ 143 { 512, 12, 6144, 19, 28, 27, 27, { 144 { 0, 12, 2 }, { 6, 14, 0 }, { 13, 17, 0 }, { 15, 20, -2 }, 145 { 19, 23, -4 }, { 19, 23, -6 }, { 19, 23, -8 }, { 19, 24, -8 }, 146 { 19, 25, -8 }, { 19, 26, -10 }, { 21, 26, -10 }, 147 { 21, 27, -12 }, { 21, 27, -12 }, { 25, 28, -12 }, 148 { 28, 29, -12 } 149 } 150 }, 151 }, 152 { 153 /* 10BPP/8BPC */ 154 { 410, 15, 5632, 3, 12, 11, 11, { 155 { 0, 3, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 2, 6, -2 }, 156 { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 }, 157 { 3, 9, -8 }, { 3, 9, -10 }, { 5, 10, -10 }, { 5, 10, -10 }, 158 { 5, 11, -12 }, { 7, 11, -12 }, { 11, 12, -12 } 159 } 160 }, 161 /* 10BPP/10BPC */ 162 { 410, 15, 5632, 7, 16, 15, 15, { 163 { 0, 7, 2 }, { 4, 8, 0 }, { 5, 9, 0 }, { 6, 10, -2 }, 164 { 7, 11, -4 }, { 7, 11, -6 }, { 7, 11, -8 }, { 7, 12, -8 }, 165 { 7, 13, -8 }, { 7, 13, -10 }, { 9, 14, -10 }, { 9, 14, -10 }, 166 { 9, 15, -12 }, { 11, 15, -12 }, { 15, 16, -12 } 167 } 168 }, 169 /* 10BPP/12BPC */ 170 { 410, 15, 5632, 11, 20, 19, 19, { 171 { 0, 11, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 10, 14, -2 }, 172 { 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 }, 173 { 11, 17, -8 }, { 11, 17, -10 }, { 13, 18, -10 }, 174 { 13, 18, -10 }, { 13, 19, -12 }, { 15, 19, -12 }, 175 { 19, 20, -12 } 176 } 177 }, 178 /* 10BPP/14BPC */ 179 { 410, 15, 5632, 15, 24, 23, 23, { 180 { 0, 11, 2 }, { 5, 13, 0 }, { 11, 15, 0 }, { 13, 18, -2 }, 181 { 15, 19, -4 }, { 15, 19, -6 }, { 15, 19, -8 }, { 15, 20, -8 }, 182 { 15, 21, -8 }, { 15, 21, -10 }, { 17, 22, -10 }, 183 { 17, 22, -10 }, { 17, 23, -12 }, { 19, 23, -12 }, 184 { 23, 24, -12 } 185 } 186 }, 187 /* 10BPP/16BPC */ 188 { 410, 15, 5632, 19, 28, 27, 27, { 189 { 0, 11, 2 }, { 6, 14, 0 }, { 13, 17, 0 }, { 16, 20, -2 }, 190 { 19, 23, -4 }, { 19, 23, -6 }, { 19, 23, -8 }, { 19, 24, -8 }, 191 { 19, 25, -8 }, { 19, 25, -10 }, { 21, 26, -10 }, 192 { 21, 26, -10 }, { 21, 27, -12 }, { 23, 27, -12 }, 193 { 27, 28, -12 } 194 } 195 }, 196 }, 197 { 198 /* 12BPP/8BPC */ 199 { 341, 15, 2048, 3, 12, 11, 11, { 200 { 0, 2, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 1, 6, -2 }, 201 { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 }, 202 { 3, 9, -8 }, { 3, 10, -10 }, { 5, 11, -10 }, 203 { 5, 12, -12 }, { 5, 13, -12 }, { 7, 13, -12 }, { 13, 15, -12 } 204 } 205 }, 206 /* 12BPP/10BPC */ 207 { 341, 15, 2048, 7, 16, 15, 15, { 208 { 0, 2, 2 }, { 2, 5, 0 }, { 3, 7, 0 }, { 4, 8, -2 }, 209 { 6, 9, -4 }, { 7, 10, -6 }, { 7, 11, -8 }, { 7, 12, -8 }, 210 { 7, 13, -8 }, { 7, 14, -10 }, { 9, 15, -10 }, { 9, 16, -12 }, 211 { 9, 17, -12 }, { 11, 17, -12 }, { 17, 19, -12 } 212 } 213 }, 214 /* 12BPP/12BPC */ 215 { 341, 15, 2048, 11, 20, 19, 19, { 216 { 0, 6, 2 }, { 4, 9, 0 }, { 7, 11, 0 }, { 8, 12, -2 }, 217 { 10, 13, -4 }, { 11, 14, -6 }, { 11, 15, -8 }, { 11, 16, -8 }, 218 { 11, 17, -8 }, { 11, 18, -10 }, { 13, 19, -10 }, 219 { 13, 20, -12 }, { 13, 21, -12 }, { 15, 21, -12 }, 220 { 21, 23, -12 } 221 } 222 }, 223 /* 12BPP/14BPC */ 224 { 341, 15, 2048, 15, 24, 23, 23, { 225 { 0, 6, 2 }, { 7, 10, 0 }, { 9, 13, 0 }, { 11, 16, -2 }, 226 { 14, 17, -4 }, { 15, 18, -6 }, { 15, 19, -8 }, { 15, 20, -8 }, 227 { 15, 20, -8 }, { 15, 21, -10 }, { 17, 21, -10 }, 228 { 17, 21, -12 }, { 17, 21, -12 }, { 19, 22, -12 }, 229 { 22, 23, -12 } 230 } 231 }, 232 /* 12BPP/16BPC */ 233 { 341, 15, 2048, 19, 28, 27, 27, { 234 { 0, 6, 2 }, { 6, 11, 0 }, { 11, 15, 0 }, { 14, 18, -2 }, 235 { 18, 21, -4 }, { 19, 22, -6 }, { 19, 23, -8 }, { 19, 24, -8 }, 236 { 19, 24, -8 }, { 19, 25, -10 }, { 21, 25, -10 }, 237 { 21, 25, -12 }, { 21, 25, -12 }, { 23, 26, -12 }, 238 { 26, 27, -12 } 239 } 240 }, 241 }, 242 { 243 /* 15BPP/8BPC */ 244 { 273, 15, 2048, 3, 12, 11, 11, { 245 { 0, 0, 10 }, { 0, 1, 8 }, { 0, 1, 6 }, { 0, 2, 4 }, 246 { 1, 2, 2 }, { 1, 3, 0 }, { 1, 3, -2 }, { 2, 4, -4 }, 247 { 2, 5, -6 }, { 3, 5, -8 }, { 4, 6, -10 }, { 4, 7, -10 }, 248 { 5, 7, -12 }, { 7, 8, -12 }, { 8, 9, -12 } 249 } 250 }, 251 /* 15BPP/10BPC */ 252 { 273, 15, 2048, 7, 16, 15, 15, { 253 { 0, 2, 10 }, { 2, 5, 8 }, { 3, 5, 6 }, { 4, 6, 4 }, 254 { 5, 6, 2 }, { 5, 7, 0 }, { 5, 7, -2 }, { 6, 8, -4 }, 255 { 6, 9, -6 }, { 7, 9, -8 }, { 8, 10, -10 }, { 8, 11, -10 }, 256 { 9, 11, -12 }, { 11, 12, -12 }, { 12, 13, -12 } 257 } 258 }, 259 /* 15BPP/12BPC */ 260 { 273, 15, 2048, 11, 20, 19, 19, { 261 { 0, 4, 10 }, { 2, 7, 8 }, { 4, 9, 6 }, { 6, 11, 4 }, 262 { 9, 11, 2 }, { 9, 11, 0 }, { 9, 12, -2 }, { 10, 12, -4 }, 263 { 11, 13, -6 }, { 11, 13, -8 }, { 12, 14, -10 }, 264 { 13, 15, -10 }, { 13, 15, -12 }, { 15, 16, -12 }, 265 { 16, 17, -12 } 266 } 267 }, 268 /* 15BPP/14BPC */ 269 { 273, 15, 2048, 15, 24, 23, 23, { 270 { 0, 4, 10 }, { 3, 8, 8 }, { 6, 11, 6 }, { 9, 14, 4 }, 271 { 13, 15, 2 }, { 13, 15, 0 }, { 13, 16, -2 }, { 14, 16, -4 }, 272 { 15, 17, -6 }, { 15, 17, -8 }, { 16, 18, -10 }, 273 { 17, 19, -10 }, { 17, 19, -12 }, { 19, 20, -12 }, 274 { 20, 21, -12 } 275 } 276 }, 277 /* 15BPP/16BPC */ 278 { 273, 15, 2048, 19, 28, 27, 27, { 279 { 0, 4, 10 }, { 4, 9, 8 }, { 8, 13, 6 }, { 12, 17, 4 }, 280 { 17, 19, 2 }, { 17, 20, 0 }, { 17, 20, -2 }, { 18, 20, -4 }, 281 { 19, 21, -6 }, { 19, 21, -8 }, { 20, 22, -10 }, 282 { 21, 23, -10 }, { 21, 23, -12 }, { 23, 24, -12 }, 283 { 24, 25, -12 } 284 } 285 } 286 } 287 288 }; 289 290 static int get_row_index_for_rc_params(u16 compressed_bpp) 291 { 292 switch (compressed_bpp) { 293 case 6: 294 return ROW_INDEX_6BPP; 295 case 8: 296 return ROW_INDEX_8BPP; 297 case 10: 298 return ROW_INDEX_10BPP; 299 case 12: 300 return ROW_INDEX_12BPP; 301 case 15: 302 return ROW_INDEX_15BPP; 303 default: 304 return -EINVAL; 305 } 306 } 307 308 static int get_column_index_for_rc_params(u8 bits_per_component) 309 { 310 switch (bits_per_component) { 311 case 8: 312 return COLUMN_INDEX_8BPC; 313 case 10: 314 return COLUMN_INDEX_10BPC; 315 case 12: 316 return COLUMN_INDEX_12BPC; 317 case 14: 318 return COLUMN_INDEX_14BPC; 319 case 16: 320 return COLUMN_INDEX_16BPC; 321 default: 322 return -EINVAL; 323 } 324 } 325 326 static const struct rc_parameters *get_rc_params(u16 compressed_bpp, 327 u8 bits_per_component) 328 { 329 int row_index, column_index; 330 331 row_index = get_row_index_for_rc_params(compressed_bpp); 332 if (row_index < 0) 333 return NULL; 334 335 column_index = get_column_index_for_rc_params(bits_per_component); 336 if (column_index < 0) 337 return NULL; 338 339 return &rc_parameters[row_index][column_index]; 340 } 341 342 bool intel_dsc_source_support(const struct intel_crtc_state *crtc_state) 343 { 344 const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 345 struct drm_i915_private *i915 = to_i915(crtc->base.dev); 346 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 347 348 if (!HAS_DSC(i915)) 349 return false; 350 351 if (DISPLAY_VER(i915) == 11 && cpu_transcoder == TRANSCODER_A) 352 return false; 353 354 return true; 355 } 356 357 static bool is_pipe_dsc(struct intel_crtc *crtc, enum transcoder cpu_transcoder) 358 { 359 struct drm_i915_private *i915 = to_i915(crtc->base.dev); 360 361 if (DISPLAY_VER(i915) >= 12) 362 return true; 363 364 if (cpu_transcoder == TRANSCODER_EDP || 365 cpu_transcoder == TRANSCODER_DSI_0 || 366 cpu_transcoder == TRANSCODER_DSI_1) 367 return false; 368 369 /* There's no pipe A DSC engine on ICL */ 370 drm_WARN_ON(&i915->drm, crtc->pipe == PIPE_A); 371 372 return true; 373 } 374 375 static void 376 calculate_rc_params(struct rc_parameters *rc, 377 struct drm_dsc_config *vdsc_cfg) 378 { 379 int bpc = vdsc_cfg->bits_per_component; 380 int bpp = vdsc_cfg->bits_per_pixel >> 4; 381 static const s8 ofs_und6[] = { 382 0, -2, -2, -4, -6, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12 383 }; 384 static const s8 ofs_und8[] = { 385 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 386 }; 387 static const s8 ofs_und12[] = { 388 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 389 }; 390 static const s8 ofs_und15[] = { 391 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12 392 }; 393 int qp_bpc_modifier = (bpc - 8) * 2; 394 u32 res, buf_i, bpp_i; 395 396 if (vdsc_cfg->slice_height >= 8) 397 rc->first_line_bpg_offset = 398 12 + DIV_ROUND_UP((9 * min(34, vdsc_cfg->slice_height - 8)), 100); 399 else 400 rc->first_line_bpg_offset = 2 * (vdsc_cfg->slice_height - 1); 401 402 /* Our hw supports only 444 modes as of today */ 403 if (bpp >= 12) 404 rc->initial_offset = 2048; 405 else if (bpp >= 10) 406 rc->initial_offset = 5632 - DIV_ROUND_UP(((bpp - 10) * 3584), 2); 407 else if (bpp >= 8) 408 rc->initial_offset = 6144 - DIV_ROUND_UP(((bpp - 8) * 512), 2); 409 else 410 rc->initial_offset = 6144; 411 412 /* initial_xmit_delay = rc_model_size/2/compression_bpp */ 413 rc->initial_xmit_delay = DIV_ROUND_UP(DSC_RC_MODEL_SIZE_CONST, 2 * bpp); 414 415 rc->flatness_min_qp = 3 + qp_bpc_modifier; 416 rc->flatness_max_qp = 12 + qp_bpc_modifier; 417 418 rc->rc_quant_incr_limit0 = 11 + qp_bpc_modifier; 419 rc->rc_quant_incr_limit1 = 11 + qp_bpc_modifier; 420 421 bpp_i = (2 * (bpp - 6)); 422 for (buf_i = 0; buf_i < DSC_NUM_BUF_RANGES; buf_i++) { 423 /* Read range_minqp and range_max_qp from qp tables */ 424 rc->rc_range_params[buf_i].range_min_qp = 425 intel_lookup_range_min_qp(bpc, buf_i, bpp_i); 426 rc->rc_range_params[buf_i].range_max_qp = 427 intel_lookup_range_max_qp(bpc, buf_i, bpp_i); 428 429 /* Calculate range_bgp_offset */ 430 if (bpp <= 6) { 431 rc->rc_range_params[buf_i].range_bpg_offset = ofs_und6[buf_i]; 432 } else if (bpp <= 8) { 433 res = DIV_ROUND_UP(((bpp - 6) * (ofs_und8[buf_i] - ofs_und6[buf_i])), 2); 434 rc->rc_range_params[buf_i].range_bpg_offset = 435 ofs_und6[buf_i] + res; 436 } else if (bpp <= 12) { 437 rc->rc_range_params[buf_i].range_bpg_offset = 438 ofs_und8[buf_i]; 439 } else if (bpp <= 15) { 440 res = DIV_ROUND_UP(((bpp - 12) * (ofs_und15[buf_i] - ofs_und12[buf_i])), 3); 441 rc->rc_range_params[buf_i].range_bpg_offset = 442 ofs_und12[buf_i] + res; 443 } else { 444 rc->rc_range_params[buf_i].range_bpg_offset = 445 ofs_und15[buf_i]; 446 } 447 } 448 } 449 450 int intel_dsc_compute_params(struct intel_crtc_state *pipe_config) 451 { 452 struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); 453 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 454 struct drm_dsc_config *vdsc_cfg = &pipe_config->dsc.config; 455 u16 compressed_bpp = pipe_config->dsc.compressed_bpp; 456 const struct rc_parameters *rc_params; 457 struct rc_parameters *rc = NULL; 458 u8 i = 0; 459 460 vdsc_cfg->pic_width = pipe_config->hw.adjusted_mode.crtc_hdisplay; 461 vdsc_cfg->slice_width = DIV_ROUND_UP(vdsc_cfg->pic_width, 462 pipe_config->dsc.slice_count); 463 464 /* Gen 11 does not support YCbCr */ 465 vdsc_cfg->simple_422 = false; 466 /* Gen 11 does not support VBR */ 467 vdsc_cfg->vbr_enable = false; 468 469 /* Gen 11 only supports integral values of bpp */ 470 vdsc_cfg->bits_per_pixel = compressed_bpp << 4; 471 vdsc_cfg->bits_per_component = pipe_config->pipe_bpp / 3; 472 473 for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++) { 474 /* 475 * six 0s are appended to the lsb of each threshold value 476 * internally in h/w. 477 * Only 8 bits are allowed for programming RcBufThreshold 478 */ 479 vdsc_cfg->rc_buf_thresh[i] = rc_buf_thresh[i] >> 6; 480 } 481 482 /* 483 * For 6bpp, RC Buffer threshold 12 and 13 need a different value 484 * as per C Model 485 */ 486 if (compressed_bpp == 6) { 487 vdsc_cfg->rc_buf_thresh[12] = 0x7C; 488 vdsc_cfg->rc_buf_thresh[13] = 0x7D; 489 } 490 491 /* 492 * From XE_LPD onwards we supports compression bpps in steps of 1 493 * upto uncompressed bpp-1, hence add calculations for all the rc 494 * parameters 495 */ 496 if (DISPLAY_VER(dev_priv) >= 13) { 497 rc = kmalloc(sizeof(*rc), GFP_KERNEL); 498 if (!rc) 499 return -ENOMEM; 500 501 calculate_rc_params(rc, vdsc_cfg); 502 rc_params = rc; 503 } else { 504 rc_params = get_rc_params(compressed_bpp, 505 vdsc_cfg->bits_per_component); 506 if (!rc_params) 507 return -EINVAL; 508 } 509 510 vdsc_cfg->first_line_bpg_offset = rc_params->first_line_bpg_offset; 511 vdsc_cfg->initial_xmit_delay = rc_params->initial_xmit_delay; 512 vdsc_cfg->initial_offset = rc_params->initial_offset; 513 vdsc_cfg->flatness_min_qp = rc_params->flatness_min_qp; 514 vdsc_cfg->flatness_max_qp = rc_params->flatness_max_qp; 515 vdsc_cfg->rc_quant_incr_limit0 = rc_params->rc_quant_incr_limit0; 516 vdsc_cfg->rc_quant_incr_limit1 = rc_params->rc_quant_incr_limit1; 517 518 for (i = 0; i < DSC_NUM_BUF_RANGES; i++) { 519 vdsc_cfg->rc_range_params[i].range_min_qp = 520 rc_params->rc_range_params[i].range_min_qp; 521 vdsc_cfg->rc_range_params[i].range_max_qp = 522 rc_params->rc_range_params[i].range_max_qp; 523 /* 524 * Range BPG Offset uses 2's complement and is only a 6 bits. So 525 * mask it to get only 6 bits. 526 */ 527 vdsc_cfg->rc_range_params[i].range_bpg_offset = 528 rc_params->rc_range_params[i].range_bpg_offset & 529 DSC_RANGE_BPG_OFFSET_MASK; 530 } 531 532 /* 533 * BitsPerComponent value determines mux_word_size: 534 * When BitsPerComponent is less than or 10bpc, muxWordSize will be equal to 535 * 48 bits otherwise 64 536 */ 537 if (vdsc_cfg->bits_per_component <= 10) 538 vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC; 539 else 540 vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC; 541 542 /* InitialScaleValue is a 6 bit value with 3 fractional bits (U3.3) */ 543 vdsc_cfg->initial_scale_value = (vdsc_cfg->rc_model_size << 3) / 544 (vdsc_cfg->rc_model_size - vdsc_cfg->initial_offset); 545 546 kfree(rc); 547 548 return 0; 549 } 550 551 enum intel_display_power_domain 552 intel_dsc_power_domain(struct intel_crtc *crtc, enum transcoder cpu_transcoder) 553 { 554 struct drm_i915_private *i915 = to_i915(crtc->base.dev); 555 enum pipe pipe = crtc->pipe; 556 557 /* 558 * VDSC/joining uses a separate power well, PW2, and requires 559 * POWER_DOMAIN_TRANSCODER_VDSC_PW2 power domain in two cases: 560 * 561 * - ICL eDP/DSI transcoder 562 * - Display version 12 (except RKL) pipe A 563 * 564 * For any other pipe, VDSC/joining uses the power well associated with 565 * the pipe in use. Hence another reference on the pipe power domain 566 * will suffice. (Except no VDSC/joining on ICL pipe A.) 567 */ 568 if (DISPLAY_VER(i915) == 12 && !IS_ROCKETLAKE(i915) && pipe == PIPE_A) 569 return POWER_DOMAIN_TRANSCODER_VDSC_PW2; 570 else if (is_pipe_dsc(crtc, cpu_transcoder)) 571 return POWER_DOMAIN_PIPE(pipe); 572 else 573 return POWER_DOMAIN_TRANSCODER_VDSC_PW2; 574 } 575 576 static void intel_dsc_pps_configure(const struct intel_crtc_state *crtc_state) 577 { 578 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 579 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 580 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; 581 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 582 enum pipe pipe = crtc->pipe; 583 u32 pps_val = 0; 584 u32 rc_buf_thresh_dword[4]; 585 u32 rc_range_params_dword[8]; 586 u8 num_vdsc_instances = (crtc_state->dsc.dsc_split) ? 2 : 1; 587 int i = 0; 588 589 if (crtc_state->bigjoiner_pipes) 590 num_vdsc_instances *= 2; 591 592 /* Populate PICTURE_PARAMETER_SET_0 registers */ 593 pps_val = DSC_VER_MAJ | vdsc_cfg->dsc_version_minor << 594 DSC_VER_MIN_SHIFT | 595 vdsc_cfg->bits_per_component << DSC_BPC_SHIFT | 596 vdsc_cfg->line_buf_depth << DSC_LINE_BUF_DEPTH_SHIFT; 597 if (vdsc_cfg->dsc_version_minor == 2) 598 pps_val |= DSC_ALT_ICH_SEL; 599 if (vdsc_cfg->block_pred_enable) 600 pps_val |= DSC_BLOCK_PREDICTION; 601 if (vdsc_cfg->convert_rgb) 602 pps_val |= DSC_COLOR_SPACE_CONVERSION; 603 if (vdsc_cfg->simple_422) 604 pps_val |= DSC_422_ENABLE; 605 if (vdsc_cfg->vbr_enable) 606 pps_val |= DSC_VBR_ENABLE; 607 drm_dbg_kms(&dev_priv->drm, "PPS0 = 0x%08x\n", pps_val); 608 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 609 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_0, 610 pps_val); 611 /* 612 * If 2 VDSC instances are needed, configure PPS for second 613 * VDSC 614 */ 615 if (crtc_state->dsc.dsc_split) 616 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_0, 617 pps_val); 618 } else { 619 intel_de_write(dev_priv, 620 ICL_DSC0_PICTURE_PARAMETER_SET_0(pipe), 621 pps_val); 622 if (crtc_state->dsc.dsc_split) 623 intel_de_write(dev_priv, 624 ICL_DSC1_PICTURE_PARAMETER_SET_0(pipe), 625 pps_val); 626 } 627 628 /* Populate PICTURE_PARAMETER_SET_1 registers */ 629 pps_val = 0; 630 pps_val |= DSC_BPP(vdsc_cfg->bits_per_pixel); 631 drm_dbg_kms(&dev_priv->drm, "PPS1 = 0x%08x\n", pps_val); 632 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 633 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_1, 634 pps_val); 635 /* 636 * If 2 VDSC instances are needed, configure PPS for second 637 * VDSC 638 */ 639 if (crtc_state->dsc.dsc_split) 640 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_1, 641 pps_val); 642 } else { 643 intel_de_write(dev_priv, 644 ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe), 645 pps_val); 646 if (crtc_state->dsc.dsc_split) 647 intel_de_write(dev_priv, 648 ICL_DSC1_PICTURE_PARAMETER_SET_1(pipe), 649 pps_val); 650 } 651 652 /* Populate PICTURE_PARAMETER_SET_2 registers */ 653 pps_val = 0; 654 pps_val |= DSC_PIC_HEIGHT(vdsc_cfg->pic_height) | 655 DSC_PIC_WIDTH(vdsc_cfg->pic_width / num_vdsc_instances); 656 drm_dbg_kms(&dev_priv->drm, "PPS2 = 0x%08x\n", pps_val); 657 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 658 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_2, 659 pps_val); 660 /* 661 * If 2 VDSC instances are needed, configure PPS for second 662 * VDSC 663 */ 664 if (crtc_state->dsc.dsc_split) 665 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_2, 666 pps_val); 667 } else { 668 intel_de_write(dev_priv, 669 ICL_DSC0_PICTURE_PARAMETER_SET_2(pipe), 670 pps_val); 671 if (crtc_state->dsc.dsc_split) 672 intel_de_write(dev_priv, 673 ICL_DSC1_PICTURE_PARAMETER_SET_2(pipe), 674 pps_val); 675 } 676 677 /* Populate PICTURE_PARAMETER_SET_3 registers */ 678 pps_val = 0; 679 pps_val |= DSC_SLICE_HEIGHT(vdsc_cfg->slice_height) | 680 DSC_SLICE_WIDTH(vdsc_cfg->slice_width); 681 drm_dbg_kms(&dev_priv->drm, "PPS3 = 0x%08x\n", pps_val); 682 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 683 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_3, 684 pps_val); 685 /* 686 * If 2 VDSC instances are needed, configure PPS for second 687 * VDSC 688 */ 689 if (crtc_state->dsc.dsc_split) 690 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_3, 691 pps_val); 692 } else { 693 intel_de_write(dev_priv, 694 ICL_DSC0_PICTURE_PARAMETER_SET_3(pipe), 695 pps_val); 696 if (crtc_state->dsc.dsc_split) 697 intel_de_write(dev_priv, 698 ICL_DSC1_PICTURE_PARAMETER_SET_3(pipe), 699 pps_val); 700 } 701 702 /* Populate PICTURE_PARAMETER_SET_4 registers */ 703 pps_val = 0; 704 pps_val |= DSC_INITIAL_XMIT_DELAY(vdsc_cfg->initial_xmit_delay) | 705 DSC_INITIAL_DEC_DELAY(vdsc_cfg->initial_dec_delay); 706 drm_dbg_kms(&dev_priv->drm, "PPS4 = 0x%08x\n", pps_val); 707 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 708 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_4, 709 pps_val); 710 /* 711 * If 2 VDSC instances are needed, configure PPS for second 712 * VDSC 713 */ 714 if (crtc_state->dsc.dsc_split) 715 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_4, 716 pps_val); 717 } else { 718 intel_de_write(dev_priv, 719 ICL_DSC0_PICTURE_PARAMETER_SET_4(pipe), 720 pps_val); 721 if (crtc_state->dsc.dsc_split) 722 intel_de_write(dev_priv, 723 ICL_DSC1_PICTURE_PARAMETER_SET_4(pipe), 724 pps_val); 725 } 726 727 /* Populate PICTURE_PARAMETER_SET_5 registers */ 728 pps_val = 0; 729 pps_val |= DSC_SCALE_INC_INT(vdsc_cfg->scale_increment_interval) | 730 DSC_SCALE_DEC_INT(vdsc_cfg->scale_decrement_interval); 731 drm_dbg_kms(&dev_priv->drm, "PPS5 = 0x%08x\n", pps_val); 732 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 733 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_5, 734 pps_val); 735 /* 736 * If 2 VDSC instances are needed, configure PPS for second 737 * VDSC 738 */ 739 if (crtc_state->dsc.dsc_split) 740 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_5, 741 pps_val); 742 } else { 743 intel_de_write(dev_priv, 744 ICL_DSC0_PICTURE_PARAMETER_SET_5(pipe), 745 pps_val); 746 if (crtc_state->dsc.dsc_split) 747 intel_de_write(dev_priv, 748 ICL_DSC1_PICTURE_PARAMETER_SET_5(pipe), 749 pps_val); 750 } 751 752 /* Populate PICTURE_PARAMETER_SET_6 registers */ 753 pps_val = 0; 754 pps_val |= DSC_INITIAL_SCALE_VALUE(vdsc_cfg->initial_scale_value) | 755 DSC_FIRST_LINE_BPG_OFFSET(vdsc_cfg->first_line_bpg_offset) | 756 DSC_FLATNESS_MIN_QP(vdsc_cfg->flatness_min_qp) | 757 DSC_FLATNESS_MAX_QP(vdsc_cfg->flatness_max_qp); 758 drm_dbg_kms(&dev_priv->drm, "PPS6 = 0x%08x\n", pps_val); 759 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 760 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_6, 761 pps_val); 762 /* 763 * If 2 VDSC instances are needed, configure PPS for second 764 * VDSC 765 */ 766 if (crtc_state->dsc.dsc_split) 767 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_6, 768 pps_val); 769 } else { 770 intel_de_write(dev_priv, 771 ICL_DSC0_PICTURE_PARAMETER_SET_6(pipe), 772 pps_val); 773 if (crtc_state->dsc.dsc_split) 774 intel_de_write(dev_priv, 775 ICL_DSC1_PICTURE_PARAMETER_SET_6(pipe), 776 pps_val); 777 } 778 779 /* Populate PICTURE_PARAMETER_SET_7 registers */ 780 pps_val = 0; 781 pps_val |= DSC_SLICE_BPG_OFFSET(vdsc_cfg->slice_bpg_offset) | 782 DSC_NFL_BPG_OFFSET(vdsc_cfg->nfl_bpg_offset); 783 drm_dbg_kms(&dev_priv->drm, "PPS7 = 0x%08x\n", pps_val); 784 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 785 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_7, 786 pps_val); 787 /* 788 * If 2 VDSC instances are needed, configure PPS for second 789 * VDSC 790 */ 791 if (crtc_state->dsc.dsc_split) 792 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_7, 793 pps_val); 794 } else { 795 intel_de_write(dev_priv, 796 ICL_DSC0_PICTURE_PARAMETER_SET_7(pipe), 797 pps_val); 798 if (crtc_state->dsc.dsc_split) 799 intel_de_write(dev_priv, 800 ICL_DSC1_PICTURE_PARAMETER_SET_7(pipe), 801 pps_val); 802 } 803 804 /* Populate PICTURE_PARAMETER_SET_8 registers */ 805 pps_val = 0; 806 pps_val |= DSC_FINAL_OFFSET(vdsc_cfg->final_offset) | 807 DSC_INITIAL_OFFSET(vdsc_cfg->initial_offset); 808 drm_dbg_kms(&dev_priv->drm, "PPS8 = 0x%08x\n", pps_val); 809 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 810 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_8, 811 pps_val); 812 /* 813 * If 2 VDSC instances are needed, configure PPS for second 814 * VDSC 815 */ 816 if (crtc_state->dsc.dsc_split) 817 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_8, 818 pps_val); 819 } else { 820 intel_de_write(dev_priv, 821 ICL_DSC0_PICTURE_PARAMETER_SET_8(pipe), 822 pps_val); 823 if (crtc_state->dsc.dsc_split) 824 intel_de_write(dev_priv, 825 ICL_DSC1_PICTURE_PARAMETER_SET_8(pipe), 826 pps_val); 827 } 828 829 /* Populate PICTURE_PARAMETER_SET_9 registers */ 830 pps_val = 0; 831 pps_val |= DSC_RC_MODEL_SIZE(vdsc_cfg->rc_model_size) | 832 DSC_RC_EDGE_FACTOR(DSC_RC_EDGE_FACTOR_CONST); 833 drm_dbg_kms(&dev_priv->drm, "PPS9 = 0x%08x\n", pps_val); 834 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 835 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_9, 836 pps_val); 837 /* 838 * If 2 VDSC instances are needed, configure PPS for second 839 * VDSC 840 */ 841 if (crtc_state->dsc.dsc_split) 842 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_9, 843 pps_val); 844 } else { 845 intel_de_write(dev_priv, 846 ICL_DSC0_PICTURE_PARAMETER_SET_9(pipe), 847 pps_val); 848 if (crtc_state->dsc.dsc_split) 849 intel_de_write(dev_priv, 850 ICL_DSC1_PICTURE_PARAMETER_SET_9(pipe), 851 pps_val); 852 } 853 854 /* Populate PICTURE_PARAMETER_SET_10 registers */ 855 pps_val = 0; 856 pps_val |= DSC_RC_QUANT_INC_LIMIT0(vdsc_cfg->rc_quant_incr_limit0) | 857 DSC_RC_QUANT_INC_LIMIT1(vdsc_cfg->rc_quant_incr_limit1) | 858 DSC_RC_TARGET_OFF_HIGH(DSC_RC_TGT_OFFSET_HI_CONST) | 859 DSC_RC_TARGET_OFF_LOW(DSC_RC_TGT_OFFSET_LO_CONST); 860 drm_dbg_kms(&dev_priv->drm, "PPS10 = 0x%08x\n", pps_val); 861 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 862 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_10, 863 pps_val); 864 /* 865 * If 2 VDSC instances are needed, configure PPS for second 866 * VDSC 867 */ 868 if (crtc_state->dsc.dsc_split) 869 intel_de_write(dev_priv, 870 DSCC_PICTURE_PARAMETER_SET_10, pps_val); 871 } else { 872 intel_de_write(dev_priv, 873 ICL_DSC0_PICTURE_PARAMETER_SET_10(pipe), 874 pps_val); 875 if (crtc_state->dsc.dsc_split) 876 intel_de_write(dev_priv, 877 ICL_DSC1_PICTURE_PARAMETER_SET_10(pipe), 878 pps_val); 879 } 880 881 /* Populate Picture parameter set 16 */ 882 pps_val = 0; 883 pps_val |= DSC_SLICE_CHUNK_SIZE(vdsc_cfg->slice_chunk_size) | 884 DSC_SLICE_PER_LINE((vdsc_cfg->pic_width / num_vdsc_instances) / 885 vdsc_cfg->slice_width) | 886 DSC_SLICE_ROW_PER_FRAME(vdsc_cfg->pic_height / 887 vdsc_cfg->slice_height); 888 drm_dbg_kms(&dev_priv->drm, "PPS16 = 0x%08x\n", pps_val); 889 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 890 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_16, 891 pps_val); 892 /* 893 * If 2 VDSC instances are needed, configure PPS for second 894 * VDSC 895 */ 896 if (crtc_state->dsc.dsc_split) 897 intel_de_write(dev_priv, 898 DSCC_PICTURE_PARAMETER_SET_16, pps_val); 899 } else { 900 intel_de_write(dev_priv, 901 ICL_DSC0_PICTURE_PARAMETER_SET_16(pipe), 902 pps_val); 903 if (crtc_state->dsc.dsc_split) 904 intel_de_write(dev_priv, 905 ICL_DSC1_PICTURE_PARAMETER_SET_16(pipe), 906 pps_val); 907 } 908 909 /* Populate the RC_BUF_THRESH registers */ 910 memset(rc_buf_thresh_dword, 0, sizeof(rc_buf_thresh_dword)); 911 for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++) { 912 rc_buf_thresh_dword[i / 4] |= 913 (u32)(vdsc_cfg->rc_buf_thresh[i] << 914 BITS_PER_BYTE * (i % 4)); 915 drm_dbg_kms(&dev_priv->drm, "RC_BUF_THRESH_%d = 0x%08x\n", i, 916 rc_buf_thresh_dword[i / 4]); 917 } 918 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 919 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0, 920 rc_buf_thresh_dword[0]); 921 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0_UDW, 922 rc_buf_thresh_dword[1]); 923 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1, 924 rc_buf_thresh_dword[2]); 925 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1_UDW, 926 rc_buf_thresh_dword[3]); 927 if (crtc_state->dsc.dsc_split) { 928 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0, 929 rc_buf_thresh_dword[0]); 930 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0_UDW, 931 rc_buf_thresh_dword[1]); 932 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1, 933 rc_buf_thresh_dword[2]); 934 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1_UDW, 935 rc_buf_thresh_dword[3]); 936 } 937 } else { 938 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0(pipe), 939 rc_buf_thresh_dword[0]); 940 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0_UDW(pipe), 941 rc_buf_thresh_dword[1]); 942 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1(pipe), 943 rc_buf_thresh_dword[2]); 944 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1_UDW(pipe), 945 rc_buf_thresh_dword[3]); 946 if (crtc_state->dsc.dsc_split) { 947 intel_de_write(dev_priv, 948 ICL_DSC1_RC_BUF_THRESH_0(pipe), 949 rc_buf_thresh_dword[0]); 950 intel_de_write(dev_priv, 951 ICL_DSC1_RC_BUF_THRESH_0_UDW(pipe), 952 rc_buf_thresh_dword[1]); 953 intel_de_write(dev_priv, 954 ICL_DSC1_RC_BUF_THRESH_1(pipe), 955 rc_buf_thresh_dword[2]); 956 intel_de_write(dev_priv, 957 ICL_DSC1_RC_BUF_THRESH_1_UDW(pipe), 958 rc_buf_thresh_dword[3]); 959 } 960 } 961 962 /* Populate the RC_RANGE_PARAMETERS registers */ 963 memset(rc_range_params_dword, 0, sizeof(rc_range_params_dword)); 964 for (i = 0; i < DSC_NUM_BUF_RANGES; i++) { 965 rc_range_params_dword[i / 2] |= 966 (u32)(((vdsc_cfg->rc_range_params[i].range_bpg_offset << 967 RC_BPG_OFFSET_SHIFT) | 968 (vdsc_cfg->rc_range_params[i].range_max_qp << 969 RC_MAX_QP_SHIFT) | 970 (vdsc_cfg->rc_range_params[i].range_min_qp << 971 RC_MIN_QP_SHIFT)) << 16 * (i % 2)); 972 drm_dbg_kms(&dev_priv->drm, "RC_RANGE_PARAM_%d = 0x%08x\n", i, 973 rc_range_params_dword[i / 2]); 974 } 975 if (!is_pipe_dsc(crtc, cpu_transcoder)) { 976 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0, 977 rc_range_params_dword[0]); 978 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0_UDW, 979 rc_range_params_dword[1]); 980 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1, 981 rc_range_params_dword[2]); 982 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1_UDW, 983 rc_range_params_dword[3]); 984 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2, 985 rc_range_params_dword[4]); 986 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2_UDW, 987 rc_range_params_dword[5]); 988 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3, 989 rc_range_params_dword[6]); 990 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3_UDW, 991 rc_range_params_dword[7]); 992 if (crtc_state->dsc.dsc_split) { 993 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_0, 994 rc_range_params_dword[0]); 995 intel_de_write(dev_priv, 996 DSCC_RC_RANGE_PARAMETERS_0_UDW, 997 rc_range_params_dword[1]); 998 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_1, 999 rc_range_params_dword[2]); 1000 intel_de_write(dev_priv, 1001 DSCC_RC_RANGE_PARAMETERS_1_UDW, 1002 rc_range_params_dword[3]); 1003 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_2, 1004 rc_range_params_dword[4]); 1005 intel_de_write(dev_priv, 1006 DSCC_RC_RANGE_PARAMETERS_2_UDW, 1007 rc_range_params_dword[5]); 1008 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_3, 1009 rc_range_params_dword[6]); 1010 intel_de_write(dev_priv, 1011 DSCC_RC_RANGE_PARAMETERS_3_UDW, 1012 rc_range_params_dword[7]); 1013 } 1014 } else { 1015 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_0(pipe), 1016 rc_range_params_dword[0]); 1017 intel_de_write(dev_priv, 1018 ICL_DSC0_RC_RANGE_PARAMETERS_0_UDW(pipe), 1019 rc_range_params_dword[1]); 1020 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_1(pipe), 1021 rc_range_params_dword[2]); 1022 intel_de_write(dev_priv, 1023 ICL_DSC0_RC_RANGE_PARAMETERS_1_UDW(pipe), 1024 rc_range_params_dword[3]); 1025 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_2(pipe), 1026 rc_range_params_dword[4]); 1027 intel_de_write(dev_priv, 1028 ICL_DSC0_RC_RANGE_PARAMETERS_2_UDW(pipe), 1029 rc_range_params_dword[5]); 1030 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_3(pipe), 1031 rc_range_params_dword[6]); 1032 intel_de_write(dev_priv, 1033 ICL_DSC0_RC_RANGE_PARAMETERS_3_UDW(pipe), 1034 rc_range_params_dword[7]); 1035 if (crtc_state->dsc.dsc_split) { 1036 intel_de_write(dev_priv, 1037 ICL_DSC1_RC_RANGE_PARAMETERS_0(pipe), 1038 rc_range_params_dword[0]); 1039 intel_de_write(dev_priv, 1040 ICL_DSC1_RC_RANGE_PARAMETERS_0_UDW(pipe), 1041 rc_range_params_dword[1]); 1042 intel_de_write(dev_priv, 1043 ICL_DSC1_RC_RANGE_PARAMETERS_1(pipe), 1044 rc_range_params_dword[2]); 1045 intel_de_write(dev_priv, 1046 ICL_DSC1_RC_RANGE_PARAMETERS_1_UDW(pipe), 1047 rc_range_params_dword[3]); 1048 intel_de_write(dev_priv, 1049 ICL_DSC1_RC_RANGE_PARAMETERS_2(pipe), 1050 rc_range_params_dword[4]); 1051 intel_de_write(dev_priv, 1052 ICL_DSC1_RC_RANGE_PARAMETERS_2_UDW(pipe), 1053 rc_range_params_dword[5]); 1054 intel_de_write(dev_priv, 1055 ICL_DSC1_RC_RANGE_PARAMETERS_3(pipe), 1056 rc_range_params_dword[6]); 1057 intel_de_write(dev_priv, 1058 ICL_DSC1_RC_RANGE_PARAMETERS_3_UDW(pipe), 1059 rc_range_params_dword[7]); 1060 } 1061 } 1062 } 1063 1064 void intel_dsc_dsi_pps_write(struct intel_encoder *encoder, 1065 const struct intel_crtc_state *crtc_state) 1066 { 1067 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; 1068 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1069 struct mipi_dsi_device *dsi; 1070 struct drm_dsc_picture_parameter_set pps; 1071 enum port port; 1072 1073 if (!crtc_state->dsc.compression_enable) 1074 return; 1075 1076 drm_dsc_pps_payload_pack(&pps, vdsc_cfg); 1077 1078 for_each_dsi_port(port, intel_dsi->ports) { 1079 dsi = intel_dsi->dsi_hosts[port]->device; 1080 1081 mipi_dsi_picture_parameter_set(dsi, &pps); 1082 mipi_dsi_compression_mode(dsi, true); 1083 } 1084 } 1085 1086 void intel_dsc_dp_pps_write(struct intel_encoder *encoder, 1087 const struct intel_crtc_state *crtc_state) 1088 { 1089 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 1090 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; 1091 struct drm_dsc_pps_infoframe dp_dsc_pps_sdp; 1092 1093 if (!crtc_state->dsc.compression_enable) 1094 return; 1095 1096 /* Prepare DP SDP PPS header as per DP 1.4 spec, Table 2-123 */ 1097 drm_dsc_dp_pps_header_init(&dp_dsc_pps_sdp.pps_header); 1098 1099 /* Fill the PPS payload bytes as per DSC spec 1.2 Table 4-1 */ 1100 drm_dsc_pps_payload_pack(&dp_dsc_pps_sdp.pps_payload, vdsc_cfg); 1101 1102 dig_port->write_infoframe(encoder, crtc_state, 1103 DP_SDP_PPS, &dp_dsc_pps_sdp, 1104 sizeof(dp_dsc_pps_sdp)); 1105 } 1106 1107 static i915_reg_t dss_ctl1_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder) 1108 { 1109 return is_pipe_dsc(crtc, cpu_transcoder) ? 1110 ICL_PIPE_DSS_CTL1(crtc->pipe) : DSS_CTL1; 1111 } 1112 1113 static i915_reg_t dss_ctl2_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder) 1114 { 1115 return is_pipe_dsc(crtc, cpu_transcoder) ? 1116 ICL_PIPE_DSS_CTL2(crtc->pipe) : DSS_CTL2; 1117 } 1118 1119 void intel_uncompressed_joiner_enable(const struct intel_crtc_state *crtc_state) 1120 { 1121 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1122 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1123 u32 dss_ctl1_val = 0; 1124 1125 if (crtc_state->bigjoiner_pipes && !crtc_state->dsc.compression_enable) { 1126 if (intel_crtc_is_bigjoiner_slave(crtc_state)) 1127 dss_ctl1_val |= UNCOMPRESSED_JOINER_SLAVE; 1128 else 1129 dss_ctl1_val |= UNCOMPRESSED_JOINER_MASTER; 1130 1131 intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val); 1132 } 1133 } 1134 1135 void intel_dsc_enable(const struct intel_crtc_state *crtc_state) 1136 { 1137 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1138 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1139 u32 dss_ctl1_val = 0; 1140 u32 dss_ctl2_val = 0; 1141 1142 if (!crtc_state->dsc.compression_enable) 1143 return; 1144 1145 intel_dsc_pps_configure(crtc_state); 1146 1147 dss_ctl2_val |= LEFT_BRANCH_VDSC_ENABLE; 1148 if (crtc_state->dsc.dsc_split) { 1149 dss_ctl2_val |= RIGHT_BRANCH_VDSC_ENABLE; 1150 dss_ctl1_val |= JOINER_ENABLE; 1151 } 1152 if (crtc_state->bigjoiner_pipes) { 1153 dss_ctl1_val |= BIG_JOINER_ENABLE; 1154 if (!intel_crtc_is_bigjoiner_slave(crtc_state)) 1155 dss_ctl1_val |= MASTER_BIG_JOINER_ENABLE; 1156 } 1157 intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val); 1158 intel_de_write(dev_priv, dss_ctl2_reg(crtc, crtc_state->cpu_transcoder), dss_ctl2_val); 1159 } 1160 1161 void intel_dsc_disable(const struct intel_crtc_state *old_crtc_state) 1162 { 1163 struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc); 1164 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1165 1166 /* Disable only if either of them is enabled */ 1167 if (old_crtc_state->dsc.compression_enable || 1168 old_crtc_state->bigjoiner_pipes) { 1169 intel_de_write(dev_priv, dss_ctl1_reg(crtc, old_crtc_state->cpu_transcoder), 0); 1170 intel_de_write(dev_priv, dss_ctl2_reg(crtc, old_crtc_state->cpu_transcoder), 0); 1171 } 1172 } 1173 1174 void intel_dsc_get_config(struct intel_crtc_state *crtc_state) 1175 { 1176 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1177 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1178 struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; 1179 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 1180 enum pipe pipe = crtc->pipe; 1181 enum intel_display_power_domain power_domain; 1182 intel_wakeref_t wakeref; 1183 u32 dss_ctl1, dss_ctl2, val; 1184 1185 if (!intel_dsc_source_support(crtc_state)) 1186 return; 1187 1188 power_domain = intel_dsc_power_domain(crtc, cpu_transcoder); 1189 1190 wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain); 1191 if (!wakeref) 1192 return; 1193 1194 dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc, cpu_transcoder)); 1195 dss_ctl2 = intel_de_read(dev_priv, dss_ctl2_reg(crtc, cpu_transcoder)); 1196 1197 crtc_state->dsc.compression_enable = dss_ctl2 & LEFT_BRANCH_VDSC_ENABLE; 1198 if (!crtc_state->dsc.compression_enable) 1199 goto out; 1200 1201 crtc_state->dsc.dsc_split = (dss_ctl2 & RIGHT_BRANCH_VDSC_ENABLE) && 1202 (dss_ctl1 & JOINER_ENABLE); 1203 1204 /* FIXME: add more state readout as needed */ 1205 1206 /* PPS1 */ 1207 if (!is_pipe_dsc(crtc, cpu_transcoder)) 1208 val = intel_de_read(dev_priv, DSCA_PICTURE_PARAMETER_SET_1); 1209 else 1210 val = intel_de_read(dev_priv, 1211 ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe)); 1212 vdsc_cfg->bits_per_pixel = val; 1213 crtc_state->dsc.compressed_bpp = vdsc_cfg->bits_per_pixel >> 4; 1214 out: 1215 intel_display_power_put(dev_priv, power_domain, wakeref); 1216 } 1217