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
cm_helper_program_color_matrices(struct dc_context * ctx,const uint16_t * regval,const struct color_matrices_reg * reg)41 void 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
cm_helper_program_xfer_func(struct dc_context * ctx,const struct pwl_params * params,const struct xfer_func_reg * reg)65 void 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
cm_helper_convert_to_custom_float(struct pwl_result_data * rgb_resulted,struct curve_points3 * corner_points,uint32_t hw_points_num,bool fixpoint)128 bool 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
cm_helper_translate_curve_to_hw_format(const struct dc_transfer_func * output_tf,struct pwl_params * lut_params,bool fixpoint)311 bool 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
320 int32_t region_start, region_end;
321 int32_t i;
322 uint32_t j, k, seg_distr[MAX_REGIONS_NUMBER], increment, start_index, hw_points;
323
324 if (output_tf == NULL || lut_params == NULL || output_tf->type == TF_TYPE_BYPASS)
325 return false;
326
327 PERF_TRACE_CTX(output_tf->ctx);
328
329 corner_points = lut_params->corner_points;
330 rgb_resulted = lut_params->rgb_resulted;
331 hw_points = 0;
332
333 memset(lut_params, 0, sizeof(struct pwl_params));
334 memset(seg_distr, 0, sizeof(seg_distr));
335
336 if (output_tf->tf == TRANSFER_FUNCTION_PQ || output_tf->tf == TRANSFER_FUNCTION_GAMMA22) {
337 /* 32 segments
338 * segments are from 2^-25 to 2^7
339 */
340 for (i = 0; i < NUMBER_REGIONS ; i++)
341 seg_distr[i] = 3;
342
343 region_start = -MAX_LOW_POINT;
344 region_end = NUMBER_REGIONS - MAX_LOW_POINT;
345 } else {
346 /* 11 segments
347 * segment is from 2^-10 to 2^1
348 * There are less than 256 points, for optimization
349 */
350 seg_distr[0] = 3;
351 seg_distr[1] = 4;
352 seg_distr[2] = 4;
353 seg_distr[3] = 4;
354 seg_distr[4] = 4;
355 seg_distr[5] = 4;
356 seg_distr[6] = 4;
357 seg_distr[7] = 4;
358 seg_distr[8] = 4;
359 seg_distr[9] = 4;
360 seg_distr[10] = 1;
361
362 region_start = -10;
363 region_end = 1;
364 }
365
366 for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++)
367 seg_distr[i] = -1;
368
369 for (k = 0; k < MAX_REGIONS_NUMBER; k++) {
370 if (seg_distr[k] != -1)
371 hw_points += (1 << seg_distr[k]);
372 }
373
374 j = 0;
375 for (k = 0; k < (region_end - region_start); k++) {
376 increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]);
377 start_index = (region_start + k + MAX_LOW_POINT) *
378 NUMBER_SW_SEGMENTS;
379 for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS;
380 i += increment) {
381 if (j == hw_points - 1)
382 break;
383 rgb_resulted[j].red = output_tf->tf_pts.red[i];
384 rgb_resulted[j].green = output_tf->tf_pts.green[i];
385 rgb_resulted[j].blue = output_tf->tf_pts.blue[i];
386 j++;
387 }
388 }
389
390 /* last point */
391 start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS;
392 rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index];
393 rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index];
394 rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index];
395
396 rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red;
397 rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green;
398 rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue;
399
400 // All 3 color channels have same x
401 corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
402 dc_fixpt_from_int(region_start));
403 corner_points[0].green.x = corner_points[0].red.x;
404 corner_points[0].blue.x = corner_points[0].red.x;
405
406 corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
407 dc_fixpt_from_int(region_end));
408 corner_points[1].green.x = corner_points[1].red.x;
409 corner_points[1].blue.x = corner_points[1].red.x;
410
411 corner_points[0].red.y = rgb_resulted[0].red;
412 corner_points[0].green.y = rgb_resulted[0].green;
413 corner_points[0].blue.y = rgb_resulted[0].blue;
414
415 corner_points[0].red.slope = dc_fixpt_div(corner_points[0].red.y,
416 corner_points[0].red.x);
417 corner_points[0].green.slope = dc_fixpt_div(corner_points[0].green.y,
418 corner_points[0].green.x);
419 corner_points[0].blue.slope = dc_fixpt_div(corner_points[0].blue.y,
420 corner_points[0].blue.x);
421
422 /* see comment above, m_arrPoints[1].y should be the Y value for the
423 * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1)
424 */
425 corner_points[1].red.y = rgb_resulted[hw_points - 1].red;
426 corner_points[1].green.y = rgb_resulted[hw_points - 1].green;
427 corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue;
428 corner_points[1].red.slope = dc_fixpt_zero;
429 corner_points[1].green.slope = dc_fixpt_zero;
430 corner_points[1].blue.slope = dc_fixpt_zero;
431
432 if (output_tf->tf == TRANSFER_FUNCTION_PQ) {
433 /* for PQ, we want to have a straight line from last HW X point,
434 * and the slope to be such that we hit 1.0 at 10000 nits.
435 */
436 const struct fixed31_32 end_value =
437 dc_fixpt_from_int(125);
438
439 corner_points[1].red.slope = dc_fixpt_div(
440 dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y),
441 dc_fixpt_sub(end_value, corner_points[1].red.x));
442 corner_points[1].green.slope = dc_fixpt_div(
443 dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y),
444 dc_fixpt_sub(end_value, corner_points[1].green.x));
445 corner_points[1].blue.slope = dc_fixpt_div(
446 dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y),
447 dc_fixpt_sub(end_value, corner_points[1].blue.x));
448 }
449
450 lut_params->hw_points_num = hw_points;
451
452 k = 0;
453 for (i = 1; i < MAX_REGIONS_NUMBER; i++) {
454 if (seg_distr[k] != -1) {
455 lut_params->arr_curve_points[k].segments_num =
456 seg_distr[k];
457 lut_params->arr_curve_points[i].offset =
458 lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]);
459 }
460 k++;
461 }
462
463 if (seg_distr[k] != -1)
464 lut_params->arr_curve_points[k].segments_num = seg_distr[k];
465
466 rgb = rgb_resulted;
467 rgb_plus_1 = rgb_resulted + 1;
468
469 i = 1;
470 while (i != hw_points + 1) {
471 rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red);
472 rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green);
473 rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);
474
475 if (fixpoint == true) {
476 rgb->delta_red_reg = dc_fixpt_clamp_u0d10(rgb->delta_red);
477 rgb->delta_green_reg = dc_fixpt_clamp_u0d10(rgb->delta_green);
478 rgb->delta_blue_reg = dc_fixpt_clamp_u0d10(rgb->delta_blue);
479 rgb->red_reg = dc_fixpt_clamp_u0d14(rgb->red);
480 rgb->green_reg = dc_fixpt_clamp_u0d14(rgb->green);
481 rgb->blue_reg = dc_fixpt_clamp_u0d14(rgb->blue);
482 }
483
484 ++rgb_plus_1;
485 ++rgb;
486 ++i;
487 }
488 cm_helper_convert_to_custom_float(rgb_resulted,
489 lut_params->corner_points,
490 hw_points, fixpoint);
491
492 return true;
493 }
494
495 #define NUM_DEGAMMA_REGIONS 12
496
497
cm_helper_translate_curve_to_degamma_hw_format(const struct dc_transfer_func * output_tf,struct pwl_params * lut_params)498 bool cm_helper_translate_curve_to_degamma_hw_format(
499 const struct dc_transfer_func *output_tf,
500 struct pwl_params *lut_params)
501 {
502 struct curve_points3 *corner_points;
503 struct pwl_result_data *rgb_resulted;
504 struct pwl_result_data *rgb;
505 struct pwl_result_data *rgb_plus_1;
506
507 int32_t region_start, region_end;
508 int32_t i;
509 uint32_t j, k, seg_distr[MAX_REGIONS_NUMBER], increment, start_index, hw_points;
510
511 if (output_tf == NULL || lut_params == NULL || output_tf->type == TF_TYPE_BYPASS)
512 return false;
513
514 PERF_TRACE_CTX(output_tf->ctx);
515
516 corner_points = lut_params->corner_points;
517 rgb_resulted = lut_params->rgb_resulted;
518 hw_points = 0;
519
520 memset(lut_params, 0, sizeof(struct pwl_params));
521 memset(seg_distr, 0, sizeof(seg_distr));
522
523 region_start = -NUM_DEGAMMA_REGIONS;
524 region_end = 0;
525
526
527 for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++)
528 seg_distr[i] = -1;
529 /* 12 segments
530 * segments are from 2^-12 to 0
531 */
532 for (i = 0; i < NUM_DEGAMMA_REGIONS ; i++)
533 seg_distr[i] = 4;
534
535 for (k = 0; k < MAX_REGIONS_NUMBER; k++) {
536 if (seg_distr[k] != -1)
537 hw_points += (1 << seg_distr[k]);
538 }
539
540 j = 0;
541 for (k = 0; k < (region_end - region_start); k++) {
542 increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]);
543 start_index = (region_start + k + MAX_LOW_POINT) *
544 NUMBER_SW_SEGMENTS;
545 for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS;
546 i += increment) {
547 if (j == hw_points - 1)
548 break;
549 rgb_resulted[j].red = output_tf->tf_pts.red[i];
550 rgb_resulted[j].green = output_tf->tf_pts.green[i];
551 rgb_resulted[j].blue = output_tf->tf_pts.blue[i];
552 j++;
553 }
554 }
555
556 /* last point */
557 start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS;
558 rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index];
559 rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index];
560 rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index];
561
562 rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red;
563 rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green;
564 rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue;
565
566 corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
567 dc_fixpt_from_int(region_start));
568 corner_points[0].green.x = corner_points[0].red.x;
569 corner_points[0].blue.x = corner_points[0].red.x;
570 corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
571 dc_fixpt_from_int(region_end));
572 corner_points[1].green.x = corner_points[1].red.x;
573 corner_points[1].blue.x = corner_points[1].red.x;
574
575 corner_points[0].red.y = rgb_resulted[0].red;
576 corner_points[0].green.y = rgb_resulted[0].green;
577 corner_points[0].blue.y = rgb_resulted[0].blue;
578
579 /* see comment above, m_arrPoints[1].y should be the Y value for the
580 * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1)
581 */
582 corner_points[1].red.y = rgb_resulted[hw_points - 1].red;
583 corner_points[1].green.y = rgb_resulted[hw_points - 1].green;
584 corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue;
585 corner_points[1].red.slope = dc_fixpt_zero;
586 corner_points[1].green.slope = dc_fixpt_zero;
587 corner_points[1].blue.slope = dc_fixpt_zero;
588
589 if (output_tf->tf == TRANSFER_FUNCTION_PQ) {
590 /* for PQ, we want to have a straight line from last HW X point,
591 * and the slope to be such that we hit 1.0 at 10000 nits.
592 */
593 const struct fixed31_32 end_value =
594 dc_fixpt_from_int(125);
595
596 corner_points[1].red.slope = dc_fixpt_div(
597 dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y),
598 dc_fixpt_sub(end_value, corner_points[1].red.x));
599 corner_points[1].green.slope = dc_fixpt_div(
600 dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y),
601 dc_fixpt_sub(end_value, corner_points[1].green.x));
602 corner_points[1].blue.slope = dc_fixpt_div(
603 dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y),
604 dc_fixpt_sub(end_value, corner_points[1].blue.x));
605 }
606
607 lut_params->hw_points_num = hw_points;
608
609 k = 0;
610 for (i = 1; i < MAX_REGIONS_NUMBER; i++) {
611 if (seg_distr[k] != -1) {
612 lut_params->arr_curve_points[k].segments_num =
613 seg_distr[k];
614 lut_params->arr_curve_points[i].offset =
615 lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]);
616 }
617 k++;
618 }
619
620 if (seg_distr[k] != -1)
621 lut_params->arr_curve_points[k].segments_num = seg_distr[k];
622
623 rgb = rgb_resulted;
624 rgb_plus_1 = rgb_resulted + 1;
625
626 i = 1;
627 while (i != hw_points + 1) {
628 rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red);
629 rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green);
630 rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);
631
632 ++rgb_plus_1;
633 ++rgb;
634 ++i;
635 }
636 cm_helper_convert_to_custom_float(rgb_resulted,
637 lut_params->corner_points,
638 hw_points, false);
639
640 return true;
641 }
642
