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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_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_program_xfer_func(
66 struct dc_context *ctx,
67 const struct pwl_params *params,
68 const struct xfer_func_reg *reg)
69{
70 uint32_t reg_region_cur;
71 unsigned int i = 0;
72
73 REG_SET_2(reg->start_cntl_b, 0,
74 exp_region_start, params->corner_points[0].blue.custom_float_x,
75 exp_resion_start_segment, 0);
76 REG_SET_2(reg->start_cntl_g, 0,
77 exp_region_start, params->corner_points[0].green.custom_float_x,
78 exp_resion_start_segment, 0);
79 REG_SET_2(reg->start_cntl_r, 0,
80 exp_region_start, params->corner_points[0].red.custom_float_x,
81 exp_resion_start_segment, 0);
82
83 REG_SET(reg->start_slope_cntl_b, 0,
84 field_region_linear_slope, params->corner_points[0].blue.custom_float_slope);
85 REG_SET(reg->start_slope_cntl_g, 0,
86 field_region_linear_slope, params->corner_points[0].green.custom_float_slope);
87 REG_SET(reg->start_slope_cntl_r, 0,
88 field_region_linear_slope, params->corner_points[0].red.custom_float_slope);
89
90 REG_SET(reg->start_end_cntl1_b, 0,
91 field_region_end, params->corner_points[1].blue.custom_float_x);
92 REG_SET_2(reg->start_end_cntl2_b, 0,
93 field_region_end_slope, params->corner_points[1].blue.custom_float_slope,
94 field_region_end_base, params->corner_points[1].blue.custom_float_y);
95
96 REG_SET(reg->start_end_cntl1_g, 0,
97 field_region_end, params->corner_points[1].green.custom_float_x);
98 REG_SET_2(reg->start_end_cntl2_g, 0,
99 field_region_end_slope, params->corner_points[1].green.custom_float_slope,
100 field_region_end_base, params->corner_points[1].green.custom_float_y);
101
102 REG_SET(reg->start_end_cntl1_r, 0,
103 field_region_end, params->corner_points[1].red.custom_float_x);
104 REG_SET_2(reg->start_end_cntl2_r, 0,
105 field_region_end_slope, params->corner_points[1].red.custom_float_slope,
106 field_region_end_base, params->corner_points[1].red.custom_float_y);
107
108 for (reg_region_cur = reg->region_start;
109 reg_region_cur <= reg->region_end;
110 reg_region_cur++) {
111
112 const struct gamma_curve *curve0 = &(params->arr_curve_points[2 * i]);
113 const struct gamma_curve *curve1 = &(params->arr_curve_points[(2 * i) + 1]);
114
115 REG_SET_4(reg_region_cur, 0,
116 exp_region0_lut_offset, curve0->offset,
117 exp_region0_num_segments, curve0->segments_num,
118 exp_region1_lut_offset, curve1->offset,
119 exp_region1_num_segments, curve1->segments_num);
120
121 i++;
122 }
123
124}
125
126
127
128bool cm_helper_convert_to_custom_float(
129 struct pwl_result_data *rgb_resulted,
130 struct curve_points3 *corner_points,
131 uint32_t hw_points_num,
132 bool fixpoint)
133{
134 struct custom_float_format fmt;
135
136 struct pwl_result_data *rgb = rgb_resulted;
137
138 uint32_t i = 0;
139
140 fmt.exponenta_bits = 6;
141 fmt.mantissa_bits = 12;
142 fmt.sign = false;
143
144 /* corner_points[0] - beginning base, slope offset for R,G,B
145 * corner_points[1] - end base, slope offset for R,G,B
146 */
147 if (!convert_to_custom_float_format(corner_points[0].red.x, &fmt,
148 &corner_points[0].red.custom_float_x)) {
149 BREAK_TO_DEBUGGER();
150 return false;
151 }
152 if (!convert_to_custom_float_format(corner_points[0].green.x, &fmt,
153 &corner_points[0].green.custom_float_x)) {
154 BREAK_TO_DEBUGGER();
155 return false;
156 }
157 if (!convert_to_custom_float_format(corner_points[0].blue.x, &fmt,
158 &corner_points[0].blue.custom_float_x)) {
159 BREAK_TO_DEBUGGER();
160 return false;
161 }
162
163 if (!convert_to_custom_float_format(corner_points[0].red.offset, &fmt,
164 &corner_points[0].red.custom_float_offset)) {
165 BREAK_TO_DEBUGGER();
166 return false;
167 }
168 if (!convert_to_custom_float_format(corner_points[0].green.offset, &fmt,
169 &corner_points[0].green.custom_float_offset)) {
170 BREAK_TO_DEBUGGER();
171 return false;
172 }
173 if (!convert_to_custom_float_format(corner_points[0].blue.offset, &fmt,
174 &corner_points[0].blue.custom_float_offset)) {
175 BREAK_TO_DEBUGGER();
176 return false;
177 }
178
179 if (!convert_to_custom_float_format(corner_points[0].red.slope, &fmt,
180 &corner_points[0].red.custom_float_slope)) {
181 BREAK_TO_DEBUGGER();
182 return false;
183 }
184 if (!convert_to_custom_float_format(corner_points[0].green.slope, &fmt,
185 &corner_points[0].green.custom_float_slope)) {
186 BREAK_TO_DEBUGGER();
187 return false;
188 }
189 if (!convert_to_custom_float_format(corner_points[0].blue.slope, &fmt,
190 &corner_points[0].blue.custom_float_slope)) {
191 BREAK_TO_DEBUGGER();
192 return false;
193 }
194
195 fmt.mantissa_bits = 10;
196 fmt.sign = false;
197
198 if (!convert_to_custom_float_format(corner_points[1].red.x, &fmt,
199 &corner_points[1].red.custom_float_x)) {
200 BREAK_TO_DEBUGGER();
201 return false;
202 }
203 if (!convert_to_custom_float_format(corner_points[1].green.x, &fmt,
204 &corner_points[1].green.custom_float_x)) {
205 BREAK_TO_DEBUGGER();
206 return false;
207 }
208 if (!convert_to_custom_float_format(corner_points[1].blue.x, &fmt,
209 &corner_points[1].blue.custom_float_x)) {
210 BREAK_TO_DEBUGGER();
211 return false;
212 }
213
214 if (fixpoint == true) {
215 corner_points[1].red.custom_float_y =
216 dc_fixpt_clamp_u0d14(corner_points[1].red.y);
217 corner_points[1].green.custom_float_y =
218 dc_fixpt_clamp_u0d14(corner_points[1].green.y);
219 corner_points[1].blue.custom_float_y =
220 dc_fixpt_clamp_u0d14(corner_points[1].blue.y);
221 } else {
222 if (!convert_to_custom_float_format(corner_points[1].red.y,
223 &fmt, &corner_points[1].red.custom_float_y)) {
224 BREAK_TO_DEBUGGER();
225 return false;
226 }
227 if (!convert_to_custom_float_format(corner_points[1].green.y,
228 &fmt, &corner_points[1].green.custom_float_y)) {
229 BREAK_TO_DEBUGGER();
230 return false;
231 }
232 if (!convert_to_custom_float_format(corner_points[1].blue.y,
233 &fmt, &corner_points[1].blue.custom_float_y)) {
234 BREAK_TO_DEBUGGER();
235 return false;
236 }
237 }
238
239 if (!convert_to_custom_float_format(corner_points[1].red.slope, &fmt,
240 &corner_points[1].red.custom_float_slope)) {
241 BREAK_TO_DEBUGGER();
242 return false;
243 }
244 if (!convert_to_custom_float_format(corner_points[1].green.slope, &fmt,
245 &corner_points[1].green.custom_float_slope)) {
246 BREAK_TO_DEBUGGER();
247 return false;
248 }
249 if (!convert_to_custom_float_format(corner_points[1].blue.slope, &fmt,
250 &corner_points[1].blue.custom_float_slope)) {
251 BREAK_TO_DEBUGGER();
252 return false;
253 }
254
255 if (hw_points_num == 0 || rgb_resulted == NULL || fixpoint == true)
256 return true;
257
258 fmt.mantissa_bits = 12;
259 fmt.sign = true;
260
261 while (i != hw_points_num) {
262 if (!convert_to_custom_float_format(rgb->red, &fmt,
263 &rgb->red_reg)) {
264 BREAK_TO_DEBUGGER();
265 return false;
266 }
267
268 if (!convert_to_custom_float_format(rgb->green, &fmt,
269 &rgb->green_reg)) {
270 BREAK_TO_DEBUGGER();
271 return false;
272 }
273
274 if (!convert_to_custom_float_format(rgb->blue, &fmt,
275 &rgb->blue_reg)) {
276 BREAK_TO_DEBUGGER();
277 return false;
278 }
279
280 if (!convert_to_custom_float_format(rgb->delta_red, &fmt,
281 &rgb->delta_red_reg)) {
282 BREAK_TO_DEBUGGER();
283 return false;
284 }
285
286 if (!convert_to_custom_float_format(rgb->delta_green, &fmt,
287 &rgb->delta_green_reg)) {
288 BREAK_TO_DEBUGGER();
289 return false;
290 }
291
292 if (!convert_to_custom_float_format(rgb->delta_blue, &fmt,
293 &rgb->delta_blue_reg)) {
294 BREAK_TO_DEBUGGER();
295 return false;
296 }
297
298 ++rgb;
299 ++i;
300 }
301
302 return true;
303}
304
305/* driver uses 32 regions or less, but DCN HW has 34, extra 2 are set to 0 */
306#define MAX_REGIONS_NUMBER 34
307#define MAX_LOW_POINT 25
308#define NUMBER_REGIONS 32
309#define NUMBER_SW_SEGMENTS 16
310
311bool cm_helper_translate_curve_to_hw_format(
312 const struct dc_transfer_func *output_tf,
313 struct pwl_params *lut_params, bool fixpoint)
314{
315 struct curve_points3 *corner_points;
316 struct pwl_result_data *rgb_resulted;
317 struct pwl_result_data *rgb;
318 struct pwl_result_data *rgb_plus_1;
319 struct pwl_result_data *rgb_minus_1;
320
321 int32_t region_start, region_end;
322 int32_t i;
323 uint32_t j, k, seg_distr[MAX_REGIONS_NUMBER], increment, start_index, hw_points;
324
325 if (output_tf == NULL || lut_params == NULL || output_tf->type == TF_TYPE_BYPASS)
326 return false;
327
328 PERF_TRACE_CTX(output_tf->ctx);
329
330 corner_points = lut_params->corner_points;
331 rgb_resulted = lut_params->rgb_resulted;
332 hw_points = 0;
333
334 memset(lut_params, 0, sizeof(struct pwl_params));
335 memset(seg_distr, 0, sizeof(seg_distr));
336
337 if (output_tf->tf == TRANSFER_FUNCTION_PQ || output_tf->tf == TRANSFER_FUNCTION_GAMMA22) {
338 /* 32 segments
339 * segments are from 2^-25 to 2^7
340 */
341 for (i = 0; i < NUMBER_REGIONS ; i++)
342 seg_distr[i] = 3;
343
344 region_start = -MAX_LOW_POINT;
345 region_end = NUMBER_REGIONS - MAX_LOW_POINT;
346 } else {
347 /* 11 segments
348 * segment is from 2^-10 to 2^1
349 * There are less than 256 points, for optimization
350 */
351 seg_distr[0] = 3;
352 seg_distr[1] = 4;
353 seg_distr[2] = 4;
354 seg_distr[3] = 4;
355 seg_distr[4] = 4;
356 seg_distr[5] = 4;
357 seg_distr[6] = 4;
358 seg_distr[7] = 4;
359 seg_distr[8] = 4;
360 seg_distr[9] = 4;
361 seg_distr[10] = 1;
362
363 region_start = -10;
364 region_end = 1;
365 }
366
367 for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++)
368 seg_distr[i] = -1;
369
370 for (k = 0; k < MAX_REGIONS_NUMBER; k++) {
371 if (seg_distr[k] != -1)
372 hw_points += (1 << seg_distr[k]);
373 }
374
375 j = 0;
376 for (k = 0; k < (region_end - region_start); k++) {
377 increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]);
378 start_index = (region_start + k + MAX_LOW_POINT) *
379 NUMBER_SW_SEGMENTS;
380 for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS;
381 i += increment) {
382 if (j == hw_points - 1)
383 break;
384 rgb_resulted[j].red = output_tf->tf_pts.red[i];
385 rgb_resulted[j].green = output_tf->tf_pts.green[i];
386 rgb_resulted[j].blue = output_tf->tf_pts.blue[i];
387 j++;
388 }
389 }
390
391 /* last point */
392 start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS;
393 rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index];
394 rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index];
395 rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index];
396
397 rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red;
398 rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green;
399 rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue;
400
401 // All 3 color channels have same x
402 corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
403 dc_fixpt_from_int(region_start));
404 corner_points[0].green.x = corner_points[0].red.x;
405 corner_points[0].blue.x = corner_points[0].red.x;
406
407 corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
408 dc_fixpt_from_int(region_end));
409 corner_points[1].green.x = corner_points[1].red.x;
410 corner_points[1].blue.x = corner_points[1].red.x;
411
412 corner_points[0].red.y = rgb_resulted[0].red;
413 corner_points[0].green.y = rgb_resulted[0].green;
414 corner_points[0].blue.y = rgb_resulted[0].blue;
415
416 corner_points[0].red.slope = dc_fixpt_div(corner_points[0].red.y,
417 corner_points[0].red.x);
418 corner_points[0].green.slope = dc_fixpt_div(corner_points[0].green.y,
419 corner_points[0].green.x);
420 corner_points[0].blue.slope = dc_fixpt_div(corner_points[0].blue.y,
421 corner_points[0].blue.x);
422
423 /* see comment above, m_arrPoints[1].y should be the Y value for the
424 * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1)
425 */
426 corner_points[1].red.y = rgb_resulted[hw_points - 1].red;
427 corner_points[1].green.y = rgb_resulted[hw_points - 1].green;
428 corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue;
429 corner_points[1].red.slope = dc_fixpt_zero;
430 corner_points[1].green.slope = dc_fixpt_zero;
431 corner_points[1].blue.slope = dc_fixpt_zero;
432
433 if (output_tf->tf == TRANSFER_FUNCTION_PQ) {
434 /* for PQ, we want to have a straight line from last HW X point,
435 * and the slope to be such that we hit 1.0 at 10000 nits.
436 */
437 const struct fixed31_32 end_value =
438 dc_fixpt_from_int(125);
439
440 corner_points[1].red.slope = dc_fixpt_div(
441 dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y),
442 dc_fixpt_sub(end_value, corner_points[1].red.x));
443 corner_points[1].green.slope = dc_fixpt_div(
444 dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y),
445 dc_fixpt_sub(end_value, corner_points[1].green.x));
446 corner_points[1].blue.slope = dc_fixpt_div(
447 dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y),
448 dc_fixpt_sub(end_value, corner_points[1].blue.x));
449 }
450
451 lut_params->hw_points_num = hw_points;
452
453 k = 0;
454 for (i = 1; i < MAX_REGIONS_NUMBER; i++) {
455 if (seg_distr[k] != -1) {
456 lut_params->arr_curve_points[k].segments_num =
457 seg_distr[k];
458 lut_params->arr_curve_points[i].offset =
459 lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]);
460 }
461 k++;
462 }
463
464 if (seg_distr[k] != -1)
465 lut_params->arr_curve_points[k].segments_num = seg_distr[k];
466
467 rgb = rgb_resulted;
468 rgb_plus_1 = rgb_resulted + 1;
469 rgb_minus_1 = rgb;
470
471 i = 1;
472 while (i != hw_points + 1) {
473
474 if (i >= hw_points - 1) {
475 if (dc_fixpt_lt(rgb_plus_1->red, rgb->red))
476 rgb_plus_1->red = dc_fixpt_add(rgb->red, rgb_minus_1->delta_red);
477 if (dc_fixpt_lt(rgb_plus_1->green, rgb->green))
478 rgb_plus_1->green = dc_fixpt_add(rgb->green, rgb_minus_1->delta_green);
479 if (dc_fixpt_lt(rgb_plus_1->blue, rgb->blue))
480 rgb_plus_1->blue = dc_fixpt_add(rgb->blue, rgb_minus_1->delta_blue);
481 }
482
483 rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red);
484 rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green);
485 rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);
486
487 if (fixpoint == true) {
488 rgb->delta_red_reg = dc_fixpt_clamp_u0d10(rgb->delta_red);
489 rgb->delta_green_reg = dc_fixpt_clamp_u0d10(rgb->delta_green);
490 rgb->delta_blue_reg = dc_fixpt_clamp_u0d10(rgb->delta_blue);
491 rgb->red_reg = dc_fixpt_clamp_u0d14(rgb->red);
492 rgb->green_reg = dc_fixpt_clamp_u0d14(rgb->green);
493 rgb->blue_reg = dc_fixpt_clamp_u0d14(rgb->blue);
494 }
495
496 ++rgb_plus_1;
497 rgb_minus_1 = rgb;
498 ++rgb;
499 ++i;
500 }
501 cm_helper_convert_to_custom_float(rgb_resulted,
502 lut_params->corner_points,
503 hw_points, fixpoint);
504
505 return true;
506}
507
508#define NUM_DEGAMMA_REGIONS 12
509
510
511bool cm_helper_translate_curve_to_degamma_hw_format(
512 const struct dc_transfer_func *output_tf,
513 struct pwl_params *lut_params)
514{
515 struct curve_points3 *corner_points;
516 struct pwl_result_data *rgb_resulted;
517 struct pwl_result_data *rgb;
518 struct pwl_result_data *rgb_plus_1;
519
520 int32_t region_start, region_end;
521 int32_t i;
522 uint32_t j, k, seg_distr[MAX_REGIONS_NUMBER], increment, start_index, hw_points;
523
524 if (output_tf == NULL || lut_params == NULL || output_tf->type == TF_TYPE_BYPASS)
525 return false;
526
527 PERF_TRACE_CTX(output_tf->ctx);
528
529 corner_points = lut_params->corner_points;
530 rgb_resulted = lut_params->rgb_resulted;
531 hw_points = 0;
532
533 memset(lut_params, 0, sizeof(struct pwl_params));
534 memset(seg_distr, 0, sizeof(seg_distr));
535
536 region_start = -NUM_DEGAMMA_REGIONS;
537 region_end = 0;
538
539
540 for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++)
541 seg_distr[i] = -1;
542 /* 12 segments
543 * segments are from 2^-12 to 0
544 */
545 for (i = 0; i < NUM_DEGAMMA_REGIONS ; i++)
546 seg_distr[i] = 4;
547
548 for (k = 0; k < MAX_REGIONS_NUMBER; k++) {
549 if (seg_distr[k] != -1)
550 hw_points += (1 << seg_distr[k]);
551 }
552
553 j = 0;
554 for (k = 0; k < (region_end - region_start); k++) {
555 increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]);
556 start_index = (region_start + k + MAX_LOW_POINT) *
557 NUMBER_SW_SEGMENTS;
558 for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS;
559 i += increment) {
560 if (j == hw_points - 1)
561 break;
562 rgb_resulted[j].red = output_tf->tf_pts.red[i];
563 rgb_resulted[j].green = output_tf->tf_pts.green[i];
564 rgb_resulted[j].blue = output_tf->tf_pts.blue[i];
565 j++;
566 }
567 }
568
569 /* last point */
570 start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS;
571 rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index];
572 rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index];
573 rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index];
574
575 rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red;
576 rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green;
577 rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue;
578
579 corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
580 dc_fixpt_from_int(region_start));
581 corner_points[0].green.x = corner_points[0].red.x;
582 corner_points[0].blue.x = corner_points[0].red.x;
583 corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
584 dc_fixpt_from_int(region_end));
585 corner_points[1].green.x = corner_points[1].red.x;
586 corner_points[1].blue.x = corner_points[1].red.x;
587
588 corner_points[0].red.y = rgb_resulted[0].red;
589 corner_points[0].green.y = rgb_resulted[0].green;
590 corner_points[0].blue.y = rgb_resulted[0].blue;
591
592 /* see comment above, m_arrPoints[1].y should be the Y value for the
593 * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1)
594 */
595 corner_points[1].red.y = rgb_resulted[hw_points - 1].red;
596 corner_points[1].green.y = rgb_resulted[hw_points - 1].green;
597 corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue;
598 corner_points[1].red.slope = dc_fixpt_zero;
599 corner_points[1].green.slope = dc_fixpt_zero;
600 corner_points[1].blue.slope = dc_fixpt_zero;
601
602 if (output_tf->tf == TRANSFER_FUNCTION_PQ) {
603 /* for PQ, we want to have a straight line from last HW X point,
604 * and the slope to be such that we hit 1.0 at 10000 nits.
605 */
606 const struct fixed31_32 end_value =
607 dc_fixpt_from_int(125);
608
609 corner_points[1].red.slope = dc_fixpt_div(
610 dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y),
611 dc_fixpt_sub(end_value, corner_points[1].red.x));
612 corner_points[1].green.slope = dc_fixpt_div(
613 dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y),
614 dc_fixpt_sub(end_value, corner_points[1].green.x));
615 corner_points[1].blue.slope = dc_fixpt_div(
616 dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y),
617 dc_fixpt_sub(end_value, corner_points[1].blue.x));
618 }
619
620 lut_params->hw_points_num = hw_points;
621
622 k = 0;
623 for (i = 1; i < MAX_REGIONS_NUMBER; i++) {
624 if (seg_distr[k] != -1) {
625 lut_params->arr_curve_points[k].segments_num =
626 seg_distr[k];
627 lut_params->arr_curve_points[i].offset =
628 lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]);
629 }
630 k++;
631 }
632
633 if (seg_distr[k] != -1)
634 lut_params->arr_curve_points[k].segments_num = seg_distr[k];
635
636 rgb = rgb_resulted;
637 rgb_plus_1 = rgb_resulted + 1;
638
639 i = 1;
640 while (i != hw_points + 1) {
641 rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red);
642 rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green);
643 rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);
644
645 ++rgb_plus_1;
646 ++rgb;
647 ++i;
648 }
649 cm_helper_convert_to_custom_float(rgb_resulted,
650 lut_params->corner_points,
651 hw_points, false);
652
653 return true;
654}