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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_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 /* 11 segments
369 * segment is from 2^-10 to 2^1
370 * There are less than 256 points, for optimization
371 */
372 seg_distr[0] = 3;
373 seg_distr[1] = 4;
374 seg_distr[2] = 4;
375 seg_distr[3] = 4;
376 seg_distr[4] = 4;
377 seg_distr[5] = 4;
378 seg_distr[6] = 4;
379 seg_distr[7] = 4;
380 seg_distr[8] = 4;
381 seg_distr[9] = 4;
382 seg_distr[10] = 1;
383
384 region_start = -10;
385 region_end = 1;
386 }
387
388 for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++)
389 seg_distr[i] = -1;
390
391 for (k = 0; k < MAX_REGIONS_NUMBER; k++) {
392 if (seg_distr[k] != -1)
393 hw_points += (1 << seg_distr[k]);
394 }
395
396 j = 0;
397 for (k = 0; k < (region_end - region_start); k++) {
398 increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]);
399 start_index = (region_start + k + MAX_LOW_POINT) *
400 NUMBER_SW_SEGMENTS;
401 for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS;
402 i += increment) {
403 if (j == hw_points - 1)
404 break;
405 if (i >= TRANSFER_FUNC_POINTS) {
406 DC_LOG_ERROR("Index out of bounds: i=%d, TRANSFER_FUNC_POINTS=%d\n",
407 i, TRANSFER_FUNC_POINTS);
408 return false;
409 }
410 rgb_resulted[j].red = output_tf->tf_pts.red[i];
411 rgb_resulted[j].green = output_tf->tf_pts.green[i];
412 rgb_resulted[j].blue = output_tf->tf_pts.blue[i];
413 j++;
414 }
415 }
416
417 /* last point */
418 start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS;
419 rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index];
420 rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index];
421 rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index];
422
423 rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red;
424 rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green;
425 rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue;
426
427 // All 3 color channels have same x
428 corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
429 dc_fixpt_from_int(region_start));
430 corner_points[0].green.x = corner_points[0].red.x;
431 corner_points[0].blue.x = corner_points[0].red.x;
432
433 corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
434 dc_fixpt_from_int(region_end));
435 corner_points[1].green.x = corner_points[1].red.x;
436 corner_points[1].blue.x = corner_points[1].red.x;
437
438 corner_points[0].red.y = rgb_resulted[0].red;
439 corner_points[0].green.y = rgb_resulted[0].green;
440 corner_points[0].blue.y = rgb_resulted[0].blue;
441
442 corner_points[0].red.slope = dc_fixpt_div(corner_points[0].red.y,
443 corner_points[0].red.x);
444 corner_points[0].green.slope = dc_fixpt_div(corner_points[0].green.y,
445 corner_points[0].green.x);
446 corner_points[0].blue.slope = dc_fixpt_div(corner_points[0].blue.y,
447 corner_points[0].blue.x);
448
449 /* see comment above, m_arrPoints[1].y should be the Y value for the
450 * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1)
451 */
452 corner_points[1].red.y = rgb_resulted[hw_points - 1].red;
453 corner_points[1].green.y = rgb_resulted[hw_points - 1].green;
454 corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue;
455 corner_points[1].red.slope = dc_fixpt_zero;
456 corner_points[1].green.slope = dc_fixpt_zero;
457 corner_points[1].blue.slope = dc_fixpt_zero;
458
459 if (output_tf->tf == TRANSFER_FUNCTION_PQ) {
460 /* for PQ, we want to have a straight line from last HW X point,
461 * and the slope to be such that we hit 1.0 at 10000 nits.
462 */
463 const struct fixed31_32 end_value =
464 dc_fixpt_from_int(125);
465
466 corner_points[1].red.slope = dc_fixpt_div(
467 dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y),
468 dc_fixpt_sub(end_value, corner_points[1].red.x));
469 corner_points[1].green.slope = dc_fixpt_div(
470 dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y),
471 dc_fixpt_sub(end_value, corner_points[1].green.x));
472 corner_points[1].blue.slope = dc_fixpt_div(
473 dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y),
474 dc_fixpt_sub(end_value, corner_points[1].blue.x));
475 }
476
477 lut_params->hw_points_num = hw_points;
478
479 k = 0;
480 for (i = 1; i < MAX_REGIONS_NUMBER; i++) {
481 if (seg_distr[k] != -1) {
482 lut_params->arr_curve_points[k].segments_num =
483 seg_distr[k];
484 lut_params->arr_curve_points[i].offset =
485 lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]);
486 }
487 k++;
488 }
489
490 if (seg_distr[k] != -1)
491 lut_params->arr_curve_points[k].segments_num = seg_distr[k];
492
493 rgb = rgb_resulted;
494 rgb_plus_1 = rgb_resulted + 1;
495 rgb_minus_1 = rgb;
496
497 i = 1;
498 while (i != hw_points + 1) {
499
500 if (i >= hw_points - 1) {
501 if (dc_fixpt_lt(rgb_plus_1->red, rgb->red))
502 rgb_plus_1->red = dc_fixpt_add(rgb->red, rgb_minus_1->delta_red);
503 if (dc_fixpt_lt(rgb_plus_1->green, rgb->green))
504 rgb_plus_1->green = dc_fixpt_add(rgb->green, rgb_minus_1->delta_green);
505 if (dc_fixpt_lt(rgb_plus_1->blue, rgb->blue))
506 rgb_plus_1->blue = dc_fixpt_add(rgb->blue, rgb_minus_1->delta_blue);
507 }
508
509 rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red);
510 rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green);
511 rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);
512
513
514 if (fixpoint == true) {
515 uint32_t red_clamp = dc_fixpt_clamp_u0d14(rgb->delta_red);
516 uint32_t green_clamp = dc_fixpt_clamp_u0d14(rgb->delta_green);
517 uint32_t blue_clamp = dc_fixpt_clamp_u0d14(rgb->delta_blue);
518
519 if (red_clamp >> 10 || green_clamp >> 10 || blue_clamp >> 10)
520 DC_LOG_WARNING("Losing delta precision while programming shaper LUT.");
521
522 rgb->delta_red_reg = red_clamp & 0x3ff;
523 rgb->delta_green_reg = green_clamp & 0x3ff;
524 rgb->delta_blue_reg = blue_clamp & 0x3ff;
525 rgb->red_reg = dc_fixpt_clamp_u0d14(rgb->red);
526 rgb->green_reg = dc_fixpt_clamp_u0d14(rgb->green);
527 rgb->blue_reg = dc_fixpt_clamp_u0d14(rgb->blue);
528 }
529
530 ++rgb_plus_1;
531 rgb_minus_1 = rgb;
532 ++rgb;
533 ++i;
534 }
535 cm_helper_convert_to_custom_float(rgb_resulted,
536 lut_params->corner_points,
537 hw_points, fixpoint);
538
539 return true;
540}
541
542#define NUM_DEGAMMA_REGIONS 12
543
544
545bool cm_helper_translate_curve_to_degamma_hw_format(
546 const struct dc_transfer_func *output_tf,
547 struct pwl_params *lut_params)
548{
549 struct curve_points3 *corner_points;
550 struct pwl_result_data *rgb_resulted;
551 struct pwl_result_data *rgb;
552 struct pwl_result_data *rgb_plus_1;
553
554 int32_t region_start, region_end;
555 int32_t i;
556 uint32_t j, k, seg_distr[MAX_REGIONS_NUMBER], increment, start_index, hw_points;
557
558 if (output_tf == NULL || lut_params == NULL || output_tf->type == TF_TYPE_BYPASS)
559 return false;
560
561 corner_points = lut_params->corner_points;
562 rgb_resulted = lut_params->rgb_resulted;
563 hw_points = 0;
564
565 memset(lut_params, 0, sizeof(struct pwl_params));
566 memset(seg_distr, 0, sizeof(seg_distr));
567
568 region_start = -NUM_DEGAMMA_REGIONS;
569 region_end = 0;
570
571
572 for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++)
573 seg_distr[i] = -1;
574 /* 12 segments
575 * segments are from 2^-12 to 0
576 */
577 for (i = 0; i < NUM_DEGAMMA_REGIONS ; i++)
578 seg_distr[i] = 4;
579
580 for (k = 0; k < MAX_REGIONS_NUMBER; k++) {
581 if (seg_distr[k] != -1)
582 hw_points += (1 << seg_distr[k]);
583 }
584
585 j = 0;
586 for (k = 0; k < (region_end - region_start); k++) {
587 increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]);
588 start_index = (region_start + k + MAX_LOW_POINT) *
589 NUMBER_SW_SEGMENTS;
590 for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS;
591 i += increment) {
592 if (j == hw_points - 1)
593 break;
594 rgb_resulted[j].red = output_tf->tf_pts.red[i];
595 rgb_resulted[j].green = output_tf->tf_pts.green[i];
596 rgb_resulted[j].blue = output_tf->tf_pts.blue[i];
597 j++;
598 }
599 }
600
601 /* last point */
602 start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS;
603 rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index];
604 rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index];
605 rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index];
606
607 rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red;
608 rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green;
609 rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue;
610
611 corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
612 dc_fixpt_from_int(region_start));
613 corner_points[0].green.x = corner_points[0].red.x;
614 corner_points[0].blue.x = corner_points[0].red.x;
615 corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
616 dc_fixpt_from_int(region_end));
617 corner_points[1].green.x = corner_points[1].red.x;
618 corner_points[1].blue.x = corner_points[1].red.x;
619
620 corner_points[0].red.y = rgb_resulted[0].red;
621 corner_points[0].green.y = rgb_resulted[0].green;
622 corner_points[0].blue.y = rgb_resulted[0].blue;
623
624 /* see comment above, m_arrPoints[1].y should be the Y value for the
625 * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1)
626 */
627 corner_points[1].red.y = rgb_resulted[hw_points - 1].red;
628 corner_points[1].green.y = rgb_resulted[hw_points - 1].green;
629 corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue;
630 corner_points[1].red.slope = dc_fixpt_zero;
631 corner_points[1].green.slope = dc_fixpt_zero;
632 corner_points[1].blue.slope = dc_fixpt_zero;
633
634 if (output_tf->tf == TRANSFER_FUNCTION_PQ) {
635 /* for PQ, we want to have a straight line from last HW X point,
636 * and the slope to be such that we hit 1.0 at 10000 nits.
637 */
638 const struct fixed31_32 end_value =
639 dc_fixpt_from_int(125);
640
641 corner_points[1].red.slope = dc_fixpt_div(
642 dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y),
643 dc_fixpt_sub(end_value, corner_points[1].red.x));
644 corner_points[1].green.slope = dc_fixpt_div(
645 dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y),
646 dc_fixpt_sub(end_value, corner_points[1].green.x));
647 corner_points[1].blue.slope = dc_fixpt_div(
648 dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y),
649 dc_fixpt_sub(end_value, corner_points[1].blue.x));
650 }
651
652 lut_params->hw_points_num = hw_points;
653
654 k = 0;
655 for (i = 1; i < MAX_REGIONS_NUMBER; i++) {
656 if (seg_distr[k] != -1) {
657 lut_params->arr_curve_points[k].segments_num =
658 seg_distr[k];
659 lut_params->arr_curve_points[i].offset =
660 lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]);
661 }
662 k++;
663 }
664
665 if (seg_distr[k] != -1)
666 lut_params->arr_curve_points[k].segments_num = seg_distr[k];
667
668 rgb = rgb_resulted;
669 rgb_plus_1 = rgb_resulted + 1;
670
671 i = 1;
672 while (i != hw_points + 1) {
673 rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red);
674 rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green);
675 rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);
676
677 ++rgb_plus_1;
678 ++rgb;
679 ++i;
680 }
681 cm_helper_convert_to_custom_float(rgb_resulted,
682 lut_params->corner_points,
683 hw_points, false);
684
685 return true;
686}