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dcn10_cm_common.c
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linux-6.19.14/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c
1/* 2 * Copyright 2016 Advanced Micro Devices, Inc. 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 shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25#include "dc.h" 26#include "reg_helper.h" 27#include "dcn10/dcn10_dpp.h" 28 29#include "dcn10_cm_common.h" 30#include "custom_float.h" 31 32#define REG(reg) reg 33 34#define CTX \ 35 ctx 36 37#undef FN 38#define FN(reg_name, field_name) \ 39 reg->shifts.field_name, reg->masks.field_name 40 41void cm_helper_program_color_matrices( 42 struct dc_context *ctx, 43 const uint16_t *regval, 44 const struct color_matrices_reg *reg) 45{ 46 uint32_t cur_csc_reg; 47 unsigned int i = 0; 48 49 for (cur_csc_reg = reg->csc_c11_c12; 50 cur_csc_reg <= reg->csc_c33_c34; 51 cur_csc_reg++) { 52 53 const uint16_t *regval0 = &(regval[2 * i]); 54 const uint16_t *regval1 = &(regval[(2 * i) + 1]); 55 56 REG_SET_2(cur_csc_reg, 0, 57 csc_c11, *regval0, 58 csc_c12, *regval1); 59 60 i++; 61 } 62 63} 64 65void cm_helper_read_color_matrices(struct dc_context *ctx, 66 uint16_t *regval, 67 const struct color_matrices_reg *reg) 68{ 69 uint32_t cur_csc_reg, regval0, regval1; 70 unsigned int i = 0; 71 72 for (cur_csc_reg = reg->csc_c11_c12; 73 cur_csc_reg <= reg->csc_c33_c34; cur_csc_reg++) { 74 REG_GET_2(cur_csc_reg, 75 csc_c11, ®val0, 76 csc_c12, ®val1); 77 78 regval[2 * i] = regval0; 79 regval[(2 * i) + 1] = regval1; 80 81 i++; 82 } 83} 84 85void cm_helper_program_xfer_func( 86 struct dc_context *ctx, 87 const struct pwl_params *params, 88 const struct xfer_func_reg *reg) 89{ 90 uint32_t reg_region_cur; 91 unsigned int i = 0; 92 93 REG_SET_2(reg->start_cntl_b, 0, 94 exp_region_start, params->corner_points[0].blue.custom_float_x, 95 exp_resion_start_segment, 0); 96 REG_SET_2(reg->start_cntl_g, 0, 97 exp_region_start, params->corner_points[0].green.custom_float_x, 98 exp_resion_start_segment, 0); 99 REG_SET_2(reg->start_cntl_r, 0, 100 exp_region_start, params->corner_points[0].red.custom_float_x, 101 exp_resion_start_segment, 0); 102 103 REG_SET(reg->start_slope_cntl_b, 0, 104 field_region_linear_slope, params->corner_points[0].blue.custom_float_slope); 105 REG_SET(reg->start_slope_cntl_g, 0, 106 field_region_linear_slope, params->corner_points[0].green.custom_float_slope); 107 REG_SET(reg->start_slope_cntl_r, 0, 108 field_region_linear_slope, params->corner_points[0].red.custom_float_slope); 109 110 REG_SET(reg->start_end_cntl1_b, 0, 111 field_region_end, params->corner_points[1].blue.custom_float_x); 112 REG_SET_2(reg->start_end_cntl2_b, 0, 113 field_region_end_slope, params->corner_points[1].blue.custom_float_slope, 114 field_region_end_base, params->corner_points[1].blue.custom_float_y); 115 116 REG_SET(reg->start_end_cntl1_g, 0, 117 field_region_end, params->corner_points[1].green.custom_float_x); 118 REG_SET_2(reg->start_end_cntl2_g, 0, 119 field_region_end_slope, params->corner_points[1].green.custom_float_slope, 120 field_region_end_base, params->corner_points[1].green.custom_float_y); 121 122 REG_SET(reg->start_end_cntl1_r, 0, 123 field_region_end, params->corner_points[1].red.custom_float_x); 124 REG_SET_2(reg->start_end_cntl2_r, 0, 125 field_region_end_slope, params->corner_points[1].red.custom_float_slope, 126 field_region_end_base, params->corner_points[1].red.custom_float_y); 127 128 for (reg_region_cur = reg->region_start; 129 reg_region_cur <= reg->region_end; 130 reg_region_cur++) { 131 132 const struct gamma_curve *curve0 = &(params->arr_curve_points[2 * i]); 133 const struct gamma_curve *curve1 = &(params->arr_curve_points[(2 * i) + 1]); 134 135 REG_SET_4(reg_region_cur, 0, 136 exp_region0_lut_offset, curve0->offset, 137 exp_region0_num_segments, curve0->segments_num, 138 exp_region1_lut_offset, curve1->offset, 139 exp_region1_num_segments, curve1->segments_num); 140 141 i++; 142 } 143 144} 145 146 147 148bool cm_helper_convert_to_custom_float( 149 struct pwl_result_data *rgb_resulted, 150 struct curve_points3 *corner_points, 151 uint32_t hw_points_num, 152 bool fixpoint) 153{ 154 struct custom_float_format fmt; 155 156 struct pwl_result_data *rgb = rgb_resulted; 157 158 uint32_t i = 0; 159 160 fmt.exponenta_bits = 6; 161 fmt.mantissa_bits = 12; 162 fmt.sign = false; 163 164 /* corner_points[0] - beginning base, slope offset for R,G,B 165 * corner_points[1] - end base, slope offset for R,G,B 166 */ 167 if (!convert_to_custom_float_format(corner_points[0].red.x, &fmt, 168 &corner_points[0].red.custom_float_x)) { 169 BREAK_TO_DEBUGGER(); 170 return false; 171 } 172 if (!convert_to_custom_float_format(corner_points[0].green.x, &fmt, 173 &corner_points[0].green.custom_float_x)) { 174 BREAK_TO_DEBUGGER(); 175 return false; 176 } 177 if (!convert_to_custom_float_format(corner_points[0].blue.x, &fmt, 178 &corner_points[0].blue.custom_float_x)) { 179 BREAK_TO_DEBUGGER(); 180 return false; 181 } 182 183 if (!convert_to_custom_float_format(corner_points[0].red.offset, &fmt, 184 &corner_points[0].red.custom_float_offset)) { 185 BREAK_TO_DEBUGGER(); 186 return false; 187 } 188 if (!convert_to_custom_float_format(corner_points[0].green.offset, &fmt, 189 &corner_points[0].green.custom_float_offset)) { 190 BREAK_TO_DEBUGGER(); 191 return false; 192 } 193 if (!convert_to_custom_float_format(corner_points[0].blue.offset, &fmt, 194 &corner_points[0].blue.custom_float_offset)) { 195 BREAK_TO_DEBUGGER(); 196 return false; 197 } 198 199 if (!convert_to_custom_float_format(corner_points[0].red.slope, &fmt, 200 &corner_points[0].red.custom_float_slope)) { 201 BREAK_TO_DEBUGGER(); 202 return false; 203 } 204 if (!convert_to_custom_float_format(corner_points[0].green.slope, &fmt, 205 &corner_points[0].green.custom_float_slope)) { 206 BREAK_TO_DEBUGGER(); 207 return false; 208 } 209 if (!convert_to_custom_float_format(corner_points[0].blue.slope, &fmt, 210 &corner_points[0].blue.custom_float_slope)) { 211 BREAK_TO_DEBUGGER(); 212 return false; 213 } 214 215 fmt.mantissa_bits = 10; 216 fmt.sign = false; 217 218 if (!convert_to_custom_float_format(corner_points[1].red.x, &fmt, 219 &corner_points[1].red.custom_float_x)) { 220 BREAK_TO_DEBUGGER(); 221 return false; 222 } 223 if (!convert_to_custom_float_format(corner_points[1].green.x, &fmt, 224 &corner_points[1].green.custom_float_x)) { 225 BREAK_TO_DEBUGGER(); 226 return false; 227 } 228 if (!convert_to_custom_float_format(corner_points[1].blue.x, &fmt, 229 &corner_points[1].blue.custom_float_x)) { 230 BREAK_TO_DEBUGGER(); 231 return false; 232 } 233 234 if (fixpoint == true) { 235 corner_points[1].red.custom_float_y = 236 dc_fixpt_clamp_u0d14(corner_points[1].red.y); 237 corner_points[1].green.custom_float_y = 238 dc_fixpt_clamp_u0d14(corner_points[1].green.y); 239 corner_points[1].blue.custom_float_y = 240 dc_fixpt_clamp_u0d14(corner_points[1].blue.y); 241 } else { 242 if (!convert_to_custom_float_format(corner_points[1].red.y, 243 &fmt, &corner_points[1].red.custom_float_y)) { 244 BREAK_TO_DEBUGGER(); 245 return false; 246 } 247 if (!convert_to_custom_float_format(corner_points[1].green.y, 248 &fmt, &corner_points[1].green.custom_float_y)) { 249 BREAK_TO_DEBUGGER(); 250 return false; 251 } 252 if (!convert_to_custom_float_format(corner_points[1].blue.y, 253 &fmt, &corner_points[1].blue.custom_float_y)) { 254 BREAK_TO_DEBUGGER(); 255 return false; 256 } 257 } 258 259 if (!convert_to_custom_float_format(corner_points[1].red.slope, &fmt, 260 &corner_points[1].red.custom_float_slope)) { 261 BREAK_TO_DEBUGGER(); 262 return false; 263 } 264 if (!convert_to_custom_float_format(corner_points[1].green.slope, &fmt, 265 &corner_points[1].green.custom_float_slope)) { 266 BREAK_TO_DEBUGGER(); 267 return false; 268 } 269 if (!convert_to_custom_float_format(corner_points[1].blue.slope, &fmt, 270 &corner_points[1].blue.custom_float_slope)) { 271 BREAK_TO_DEBUGGER(); 272 return false; 273 } 274 275 if (hw_points_num == 0 || rgb_resulted == NULL || fixpoint == true) 276 return true; 277 278 fmt.mantissa_bits = 12; 279 fmt.sign = true; 280 281 while (i != hw_points_num) { 282 if (!convert_to_custom_float_format(rgb->red, &fmt, 283 &rgb->red_reg)) { 284 BREAK_TO_DEBUGGER(); 285 return false; 286 } 287 288 if (!convert_to_custom_float_format(rgb->green, &fmt, 289 &rgb->green_reg)) { 290 BREAK_TO_DEBUGGER(); 291 return false; 292 } 293 294 if (!convert_to_custom_float_format(rgb->blue, &fmt, 295 &rgb->blue_reg)) { 296 BREAK_TO_DEBUGGER(); 297 return false; 298 } 299 300 if (!convert_to_custom_float_format(rgb->delta_red, &fmt, 301 &rgb->delta_red_reg)) { 302 BREAK_TO_DEBUGGER(); 303 return false; 304 } 305 306 if (!convert_to_custom_float_format(rgb->delta_green, &fmt, 307 &rgb->delta_green_reg)) { 308 BREAK_TO_DEBUGGER(); 309 return false; 310 } 311 312 if (!convert_to_custom_float_format(rgb->delta_blue, &fmt, 313 &rgb->delta_blue_reg)) { 314 BREAK_TO_DEBUGGER(); 315 return false; 316 } 317 318 ++rgb; 319 ++i; 320 } 321 322 return true; 323} 324 325/* driver uses 32 regions or less, but DCN HW has 34, extra 2 are set to 0 */ 326#define MAX_REGIONS_NUMBER 34 327#define MAX_LOW_POINT 25 328#define NUMBER_REGIONS 32 329#define NUMBER_SW_SEGMENTS 16 330 331#define DC_LOGGER \ 332 ctx->logger 333 334bool cm_helper_translate_curve_to_hw_format(struct dc_context *ctx, 335 const struct dc_transfer_func *output_tf, 336 struct pwl_params *lut_params, bool fixpoint) 337{ 338 struct curve_points3 *corner_points; 339 struct pwl_result_data *rgb_resulted; 340 struct pwl_result_data *rgb; 341 struct pwl_result_data *rgb_plus_1; 342 struct pwl_result_data *rgb_minus_1; 343 344 int32_t region_start, region_end; 345 int32_t i; 346 uint32_t j, k, seg_distr[MAX_REGIONS_NUMBER], increment, start_index, hw_points; 347 348 if (output_tf == NULL || lut_params == NULL || output_tf->type == TF_TYPE_BYPASS) 349 return false; 350 351 corner_points = lut_params->corner_points; 352 rgb_resulted = lut_params->rgb_resulted; 353 hw_points = 0; 354 355 memset(lut_params, 0, sizeof(struct pwl_params)); 356 memset(seg_distr, 0, sizeof(seg_distr)); 357 358 if (output_tf->tf == TRANSFER_FUNCTION_PQ || output_tf->tf == TRANSFER_FUNCTION_GAMMA22) { 359 /* 32 segments 360 * segments are from 2^-25 to 2^7 361 */ 362 for (i = 0; i < NUMBER_REGIONS ; i++) 363 seg_distr[i] = 3; 364 365 region_start = -MAX_LOW_POINT; 366 region_end = NUMBER_REGIONS - MAX_LOW_POINT; 367 } else { 368 /* 13 segments 369 * segment is from 2^-12 to 2^0 370 * There are less than 256 points, for optimization 371 */ 372 const uint8_t SEG_COUNT = 12; 373 374 for (i = 0; i < SEG_COUNT; i++) 375 seg_distr[i] = 4; 376 377 seg_distr[SEG_COUNT] = 1; 378 379 region_start = -SEG_COUNT; 380 region_end = 1; 381 } 382 383 for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++) 384 seg_distr[i] = -1; 385 386 for (k = 0; k < MAX_REGIONS_NUMBER; k++) { 387 if (seg_distr[k] != -1) 388 hw_points += (1 << seg_distr[k]); 389 } 390 391 j = 0; 392 for (k = 0; k < (region_end - region_start); k++) { 393 increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]); 394 start_index = (region_start + k + MAX_LOW_POINT) * 395 NUMBER_SW_SEGMENTS; 396 for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS; 397 i += increment) { 398 if (j == hw_points - 1) 399 break; 400 if (i >= TRANSFER_FUNC_POINTS) { 401 DC_LOG_ERROR("Index out of bounds: i=%d, TRANSFER_FUNC_POINTS=%d\n", 402 i, TRANSFER_FUNC_POINTS); 403 return false; 404 } 405 rgb_resulted[j].red = output_tf->tf_pts.red[i]; 406 rgb_resulted[j].green = output_tf->tf_pts.green[i]; 407 rgb_resulted[j].blue = output_tf->tf_pts.blue[i]; 408 j++; 409 } 410 } 411 412 /* last point */ 413 start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS; 414 rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index]; 415 rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index]; 416 rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index]; 417 418 rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red; 419 rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green; 420 rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue; 421 422 // All 3 color channels have same x 423 corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2), 424 dc_fixpt_from_int(region_start)); 425 corner_points[0].green.x = corner_points[0].red.x; 426 corner_points[0].blue.x = corner_points[0].red.x; 427 428 corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2), 429 dc_fixpt_from_int(region_end)); 430 corner_points[1].green.x = corner_points[1].red.x; 431 corner_points[1].blue.x = corner_points[1].red.x; 432 433 corner_points[0].red.y = rgb_resulted[0].red; 434 corner_points[0].green.y = rgb_resulted[0].green; 435 corner_points[0].blue.y = rgb_resulted[0].blue; 436 437 corner_points[0].red.slope = dc_fixpt_div(corner_points[0].red.y, 438 corner_points[0].red.x); 439 corner_points[0].green.slope = dc_fixpt_div(corner_points[0].green.y, 440 corner_points[0].green.x); 441 corner_points[0].blue.slope = dc_fixpt_div(corner_points[0].blue.y, 442 corner_points[0].blue.x); 443 444 /* see comment above, m_arrPoints[1].y should be the Y value for the 445 * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1) 446 */ 447 corner_points[1].red.y = rgb_resulted[hw_points - 1].red; 448 corner_points[1].green.y = rgb_resulted[hw_points - 1].green; 449 corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue; 450 corner_points[1].red.slope = dc_fixpt_zero; 451 corner_points[1].green.slope = dc_fixpt_zero; 452 corner_points[1].blue.slope = dc_fixpt_zero; 453 454 if (output_tf->tf == TRANSFER_FUNCTION_PQ) { 455 /* for PQ, we want to have a straight line from last HW X point, 456 * and the slope to be such that we hit 1.0 at 10000 nits. 457 */ 458 const struct fixed31_32 end_value = 459 dc_fixpt_from_int(125); 460 461 corner_points[1].red.slope = dc_fixpt_div( 462 dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y), 463 dc_fixpt_sub(end_value, corner_points[1].red.x)); 464 corner_points[1].green.slope = dc_fixpt_div( 465 dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y), 466 dc_fixpt_sub(end_value, corner_points[1].green.x)); 467 corner_points[1].blue.slope = dc_fixpt_div( 468 dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y), 469 dc_fixpt_sub(end_value, corner_points[1].blue.x)); 470 } 471 472 lut_params->hw_points_num = hw_points; 473 474 k = 0; 475 for (i = 1; i < MAX_REGIONS_NUMBER; i++) { 476 if (seg_distr[k] != -1) { 477 lut_params->arr_curve_points[k].segments_num = 478 seg_distr[k]; 479 lut_params->arr_curve_points[i].offset = 480 lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]); 481 } 482 k++; 483 } 484 485 if (seg_distr[k] != -1) 486 lut_params->arr_curve_points[k].segments_num = seg_distr[k]; 487 488 rgb = rgb_resulted; 489 rgb_plus_1 = rgb_resulted + 1; 490 rgb_minus_1 = rgb; 491 492 i = 1; 493 while (i != hw_points + 1) { 494 495 if (i >= hw_points - 1) { 496 if (dc_fixpt_lt(rgb_plus_1->red, rgb->red)) 497 rgb_plus_1->red = dc_fixpt_add(rgb->red, rgb_minus_1->delta_red); 498 if (dc_fixpt_lt(rgb_plus_1->green, rgb->green)) 499 rgb_plus_1->green = dc_fixpt_add(rgb->green, rgb_minus_1->delta_green); 500 if (dc_fixpt_lt(rgb_plus_1->blue, rgb->blue)) 501 rgb_plus_1->blue = dc_fixpt_add(rgb->blue, rgb_minus_1->delta_blue); 502 } 503 504 rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red); 505 rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green); 506 rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue); 507 508 509 if (fixpoint == true) { 510 uint32_t red_clamp = dc_fixpt_clamp_u0d14(rgb->delta_red); 511 uint32_t green_clamp = dc_fixpt_clamp_u0d14(rgb->delta_green); 512 uint32_t blue_clamp = dc_fixpt_clamp_u0d14(rgb->delta_blue); 513 514 if (red_clamp >> 10 || green_clamp >> 10 || blue_clamp >> 10) 515 DC_LOG_WARNING("Losing delta precision while programming shaper LUT."); 516 517 rgb->delta_red_reg = red_clamp & 0x3ff; 518 rgb->delta_green_reg = green_clamp & 0x3ff; 519 rgb->delta_blue_reg = blue_clamp & 0x3ff; 520 rgb->red_reg = dc_fixpt_clamp_u0d14(rgb->red); 521 rgb->green_reg = dc_fixpt_clamp_u0d14(rgb->green); 522 rgb->blue_reg = dc_fixpt_clamp_u0d14(rgb->blue); 523 } 524 525 ++rgb_plus_1; 526 rgb_minus_1 = rgb; 527 ++rgb; 528 ++i; 529 } 530 cm_helper_convert_to_custom_float(rgb_resulted, 531 lut_params->corner_points, 532 hw_points, fixpoint); 533 534 return true; 535} 536 537#define NUM_DEGAMMA_REGIONS 12 538 539 540bool cm_helper_translate_curve_to_degamma_hw_format( 541 const struct dc_transfer_func *output_tf, 542 struct pwl_params *lut_params) 543{ 544 struct curve_points3 *corner_points; 545 struct pwl_result_data *rgb_resulted; 546 struct pwl_result_data *rgb; 547 struct pwl_result_data *rgb_plus_1; 548 549 int32_t region_start, region_end; 550 int32_t i; 551 uint32_t j, k, seg_distr[MAX_REGIONS_NUMBER], increment, start_index, hw_points; 552 553 if (output_tf == NULL || lut_params == NULL || output_tf->type == TF_TYPE_BYPASS) 554 return false; 555 556 corner_points = lut_params->corner_points; 557 rgb_resulted = lut_params->rgb_resulted; 558 hw_points = 0; 559 560 memset(lut_params, 0, sizeof(struct pwl_params)); 561 memset(seg_distr, 0, sizeof(seg_distr)); 562 563 region_start = -NUM_DEGAMMA_REGIONS; 564 region_end = 0; 565 566 567 for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++) 568 seg_distr[i] = -1; 569 /* 12 segments 570 * segments are from 2^-12 to 0 571 */ 572 for (i = 0; i < NUM_DEGAMMA_REGIONS ; i++) 573 seg_distr[i] = 4; 574 575 for (k = 0; k < MAX_REGIONS_NUMBER; k++) { 576 if (seg_distr[k] != -1) 577 hw_points += (1 << seg_distr[k]); 578 } 579 580 j = 0; 581 for (k = 0; k < (region_end - region_start); k++) { 582 increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]); 583 start_index = (region_start + k + MAX_LOW_POINT) * 584 NUMBER_SW_SEGMENTS; 585 for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS; 586 i += increment) { 587 if (j == hw_points - 1) 588 break; 589 if (i >= TRANSFER_FUNC_POINTS) 590 return false; 591 rgb_resulted[j].red = output_tf->tf_pts.red[i]; 592 rgb_resulted[j].green = output_tf->tf_pts.green[i]; 593 rgb_resulted[j].blue = output_tf->tf_pts.blue[i]; 594 j++; 595 } 596 } 597 598 /* last point */ 599 start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS; 600 rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index]; 601 rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index]; 602 rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index]; 603 604 rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red; 605 rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green; 606 rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue; 607 608 corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2), 609 dc_fixpt_from_int(region_start)); 610 corner_points[0].green.x = corner_points[0].red.x; 611 corner_points[0].blue.x = corner_points[0].red.x; 612 corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2), 613 dc_fixpt_from_int(region_end)); 614 corner_points[1].green.x = corner_points[1].red.x; 615 corner_points[1].blue.x = corner_points[1].red.x; 616 617 corner_points[0].red.y = rgb_resulted[0].red; 618 corner_points[0].green.y = rgb_resulted[0].green; 619 corner_points[0].blue.y = rgb_resulted[0].blue; 620 621 /* see comment above, m_arrPoints[1].y should be the Y value for the 622 * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1) 623 */ 624 corner_points[1].red.y = rgb_resulted[hw_points - 1].red; 625 corner_points[1].green.y = rgb_resulted[hw_points - 1].green; 626 corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue; 627 corner_points[1].red.slope = dc_fixpt_zero; 628 corner_points[1].green.slope = dc_fixpt_zero; 629 corner_points[1].blue.slope = dc_fixpt_zero; 630 631 if (output_tf->tf == TRANSFER_FUNCTION_PQ) { 632 /* for PQ, we want to have a straight line from last HW X point, 633 * and the slope to be such that we hit 1.0 at 10000 nits. 634 */ 635 const struct fixed31_32 end_value = 636 dc_fixpt_from_int(125); 637 638 corner_points[1].red.slope = dc_fixpt_div( 639 dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y), 640 dc_fixpt_sub(end_value, corner_points[1].red.x)); 641 corner_points[1].green.slope = dc_fixpt_div( 642 dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y), 643 dc_fixpt_sub(end_value, corner_points[1].green.x)); 644 corner_points[1].blue.slope = dc_fixpt_div( 645 dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y), 646 dc_fixpt_sub(end_value, corner_points[1].blue.x)); 647 } 648 649 lut_params->hw_points_num = hw_points; 650 651 k = 0; 652 for (i = 1; i < MAX_REGIONS_NUMBER; i++) { 653 if (seg_distr[k] != -1) { 654 lut_params->arr_curve_points[k].segments_num = 655 seg_distr[k]; 656 lut_params->arr_curve_points[i].offset = 657 lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]); 658 } 659 k++; 660 } 661 662 if (seg_distr[k] != -1) 663 lut_params->arr_curve_points[k].segments_num = seg_distr[k]; 664 665 rgb = rgb_resulted; 666 rgb_plus_1 = rgb_resulted + 1; 667 668 i = 1; 669 while (i != hw_points + 1) { 670 rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red); 671 rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green); 672 rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue); 673 674 ++rgb_plus_1; 675 ++rgb; 676 ++i; 677 } 678 cm_helper_convert_to_custom_float(rgb_resulted, 679 lut_params->corner_points, 680 hw_points, false); 681 682 return true; 683}
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