1 /* $NetBSD: amdgpu_dcn10_cm_common.c,v 1.2 2021/12/18 23:45:03 riastradh Exp $ */
2
3 /*
4 * Copyright 2016 Advanced Micro Devices, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: AMD
25 *
26 */
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: amdgpu_dcn10_cm_common.c,v 1.2 2021/12/18 23:45:03 riastradh Exp $");
29
30 #include "dc.h"
31 #include "reg_helper.h"
32 #include "dcn10_dpp.h"
33
34 #include "dcn10_cm_common.h"
35 #include "custom_float.h"
36
37 #define REG(reg) reg
38
39 #define CTX \
40 ctx
41
42 #undef FN
43 #define FN(reg_name, field_name) \
44 reg->shifts.field_name, reg->masks.field_name
45
cm_helper_program_color_matrices(struct dc_context * ctx,const uint16_t * regval,const struct color_matrices_reg * reg)46 void cm_helper_program_color_matrices(
47 struct dc_context *ctx,
48 const uint16_t *regval,
49 const struct color_matrices_reg *reg)
50 {
51 uint32_t cur_csc_reg;
52 unsigned int i = 0;
53
54 for (cur_csc_reg = reg->csc_c11_c12;
55 cur_csc_reg <= reg->csc_c33_c34;
56 cur_csc_reg++) {
57
58 const uint16_t *regval0 = &(regval[2 * i]);
59 const uint16_t *regval1 = &(regval[(2 * i) + 1]);
60
61 REG_SET_2(cur_csc_reg, 0,
62 csc_c11, *regval0,
63 csc_c12, *regval1);
64
65 i++;
66 }
67
68 }
69
cm_helper_program_xfer_func(struct dc_context * ctx,const struct pwl_params * params,const struct xfer_func_reg * reg)70 void cm_helper_program_xfer_func(
71 struct dc_context *ctx,
72 const struct pwl_params *params,
73 const struct xfer_func_reg *reg)
74 {
75 uint32_t reg_region_cur;
76 unsigned int i = 0;
77
78 REG_SET_2(reg->start_cntl_b, 0,
79 exp_region_start, params->corner_points[0].blue.custom_float_x,
80 exp_resion_start_segment, 0);
81 REG_SET_2(reg->start_cntl_g, 0,
82 exp_region_start, params->corner_points[0].green.custom_float_x,
83 exp_resion_start_segment, 0);
84 REG_SET_2(reg->start_cntl_r, 0,
85 exp_region_start, params->corner_points[0].red.custom_float_x,
86 exp_resion_start_segment, 0);
87
88 REG_SET(reg->start_slope_cntl_b, 0,
89 field_region_linear_slope, params->corner_points[0].blue.custom_float_slope);
90 REG_SET(reg->start_slope_cntl_g, 0,
91 field_region_linear_slope, params->corner_points[0].green.custom_float_slope);
92 REG_SET(reg->start_slope_cntl_r, 0,
93 field_region_linear_slope, params->corner_points[0].red.custom_float_slope);
94
95 REG_SET(reg->start_end_cntl1_b, 0,
96 field_region_end, params->corner_points[1].blue.custom_float_x);
97 REG_SET_2(reg->start_end_cntl2_b, 0,
98 field_region_end_slope, params->corner_points[1].blue.custom_float_slope,
99 field_region_end_base, params->corner_points[1].blue.custom_float_y);
100
101 REG_SET(reg->start_end_cntl1_g, 0,
102 field_region_end, params->corner_points[1].green.custom_float_x);
103 REG_SET_2(reg->start_end_cntl2_g, 0,
104 field_region_end_slope, params->corner_points[1].green.custom_float_slope,
105 field_region_end_base, params->corner_points[1].green.custom_float_y);
106
107 REG_SET(reg->start_end_cntl1_r, 0,
108 field_region_end, params->corner_points[1].red.custom_float_x);
109 REG_SET_2(reg->start_end_cntl2_r, 0,
110 field_region_end_slope, params->corner_points[1].red.custom_float_slope,
111 field_region_end_base, params->corner_points[1].red.custom_float_y);
112
113 for (reg_region_cur = reg->region_start;
114 reg_region_cur <= reg->region_end;
115 reg_region_cur++) {
116
117 const struct gamma_curve *curve0 = &(params->arr_curve_points[2 * i]);
118 const struct gamma_curve *curve1 = &(params->arr_curve_points[(2 * i) + 1]);
119
120 REG_SET_4(reg_region_cur, 0,
121 exp_region0_lut_offset, curve0->offset,
122 exp_region0_num_segments, curve0->segments_num,
123 exp_region1_lut_offset, curve1->offset,
124 exp_region1_num_segments, curve1->segments_num);
125
126 i++;
127 }
128
129 }
130
131
132
cm_helper_convert_to_custom_float(struct pwl_result_data * rgb_resulted,struct curve_points3 * corner_points,uint32_t hw_points_num,bool fixpoint)133 bool cm_helper_convert_to_custom_float(
134 struct pwl_result_data *rgb_resulted,
135 struct curve_points3 *corner_points,
136 uint32_t hw_points_num,
137 bool fixpoint)
138 {
139 struct custom_float_format fmt;
140
141 struct pwl_result_data *rgb = rgb_resulted;
142
143 uint32_t i = 0;
144
145 fmt.exponenta_bits = 6;
146 fmt.mantissa_bits = 12;
147 fmt.sign = false;
148
149 /* corner_points[0] - beginning base, slope offset for R,G,B
150 * corner_points[1] - end base, slope offset for R,G,B
151 */
152 if (!convert_to_custom_float_format(corner_points[0].red.x, &fmt,
153 &corner_points[0].red.custom_float_x)) {
154 BREAK_TO_DEBUGGER();
155 return false;
156 }
157 if (!convert_to_custom_float_format(corner_points[0].green.x, &fmt,
158 &corner_points[0].green.custom_float_x)) {
159 BREAK_TO_DEBUGGER();
160 return false;
161 }
162 if (!convert_to_custom_float_format(corner_points[0].blue.x, &fmt,
163 &corner_points[0].blue.custom_float_x)) {
164 BREAK_TO_DEBUGGER();
165 return false;
166 }
167
168 if (!convert_to_custom_float_format(corner_points[0].red.offset, &fmt,
169 &corner_points[0].red.custom_float_offset)) {
170 BREAK_TO_DEBUGGER();
171 return false;
172 }
173 if (!convert_to_custom_float_format(corner_points[0].green.offset, &fmt,
174 &corner_points[0].green.custom_float_offset)) {
175 BREAK_TO_DEBUGGER();
176 return false;
177 }
178 if (!convert_to_custom_float_format(corner_points[0].blue.offset, &fmt,
179 &corner_points[0].blue.custom_float_offset)) {
180 BREAK_TO_DEBUGGER();
181 return false;
182 }
183
184 if (!convert_to_custom_float_format(corner_points[0].red.slope, &fmt,
185 &corner_points[0].red.custom_float_slope)) {
186 BREAK_TO_DEBUGGER();
187 return false;
188 }
189 if (!convert_to_custom_float_format(corner_points[0].green.slope, &fmt,
190 &corner_points[0].green.custom_float_slope)) {
191 BREAK_TO_DEBUGGER();
192 return false;
193 }
194 if (!convert_to_custom_float_format(corner_points[0].blue.slope, &fmt,
195 &corner_points[0].blue.custom_float_slope)) {
196 BREAK_TO_DEBUGGER();
197 return false;
198 }
199
200 fmt.mantissa_bits = 10;
201 fmt.sign = false;
202
203 if (!convert_to_custom_float_format(corner_points[1].red.x, &fmt,
204 &corner_points[1].red.custom_float_x)) {
205 BREAK_TO_DEBUGGER();
206 return false;
207 }
208 if (!convert_to_custom_float_format(corner_points[1].green.x, &fmt,
209 &corner_points[1].green.custom_float_x)) {
210 BREAK_TO_DEBUGGER();
211 return false;
212 }
213 if (!convert_to_custom_float_format(corner_points[1].blue.x, &fmt,
214 &corner_points[1].blue.custom_float_x)) {
215 BREAK_TO_DEBUGGER();
216 return false;
217 }
218
219 if (fixpoint == true) {
220 corner_points[1].red.custom_float_y =
221 dc_fixpt_clamp_u0d14(corner_points[1].red.y);
222 corner_points[1].green.custom_float_y =
223 dc_fixpt_clamp_u0d14(corner_points[1].green.y);
224 corner_points[1].blue.custom_float_y =
225 dc_fixpt_clamp_u0d14(corner_points[1].blue.y);
226 } else {
227 if (!convert_to_custom_float_format(corner_points[1].red.y,
228 &fmt, &corner_points[1].red.custom_float_y)) {
229 BREAK_TO_DEBUGGER();
230 return false;
231 }
232 if (!convert_to_custom_float_format(corner_points[1].green.y,
233 &fmt, &corner_points[1].green.custom_float_y)) {
234 BREAK_TO_DEBUGGER();
235 return false;
236 }
237 if (!convert_to_custom_float_format(corner_points[1].blue.y,
238 &fmt, &corner_points[1].blue.custom_float_y)) {
239 BREAK_TO_DEBUGGER();
240 return false;
241 }
242 }
243
244 if (!convert_to_custom_float_format(corner_points[1].red.slope, &fmt,
245 &corner_points[1].red.custom_float_slope)) {
246 BREAK_TO_DEBUGGER();
247 return false;
248 }
249 if (!convert_to_custom_float_format(corner_points[1].green.slope, &fmt,
250 &corner_points[1].green.custom_float_slope)) {
251 BREAK_TO_DEBUGGER();
252 return false;
253 }
254 if (!convert_to_custom_float_format(corner_points[1].blue.slope, &fmt,
255 &corner_points[1].blue.custom_float_slope)) {
256 BREAK_TO_DEBUGGER();
257 return false;
258 }
259
260 if (hw_points_num == 0 || rgb_resulted == NULL || fixpoint == true)
261 return true;
262
263 fmt.mantissa_bits = 12;
264 fmt.sign = true;
265
266 while (i != hw_points_num) {
267 if (!convert_to_custom_float_format(rgb->red, &fmt,
268 &rgb->red_reg)) {
269 BREAK_TO_DEBUGGER();
270 return false;
271 }
272
273 if (!convert_to_custom_float_format(rgb->green, &fmt,
274 &rgb->green_reg)) {
275 BREAK_TO_DEBUGGER();
276 return false;
277 }
278
279 if (!convert_to_custom_float_format(rgb->blue, &fmt,
280 &rgb->blue_reg)) {
281 BREAK_TO_DEBUGGER();
282 return false;
283 }
284
285 if (!convert_to_custom_float_format(rgb->delta_red, &fmt,
286 &rgb->delta_red_reg)) {
287 BREAK_TO_DEBUGGER();
288 return false;
289 }
290
291 if (!convert_to_custom_float_format(rgb->delta_green, &fmt,
292 &rgb->delta_green_reg)) {
293 BREAK_TO_DEBUGGER();
294 return false;
295 }
296
297 if (!convert_to_custom_float_format(rgb->delta_blue, &fmt,
298 &rgb->delta_blue_reg)) {
299 BREAK_TO_DEBUGGER();
300 return false;
301 }
302
303 ++rgb;
304 ++i;
305 }
306
307 return true;
308 }
309
310 /* driver uses 32 regions or less, but DCN HW has 34, extra 2 are set to 0 */
311 #define MAX_REGIONS_NUMBER 34
312 #define MAX_LOW_POINT 25
313 #define NUMBER_REGIONS 32
314 #define NUMBER_SW_SEGMENTS 16
315
cm_helper_translate_curve_to_hw_format(const struct dc_transfer_func * output_tf,struct pwl_params * lut_params,bool fixpoint)316 bool cm_helper_translate_curve_to_hw_format(
317 const struct dc_transfer_func *output_tf,
318 struct pwl_params *lut_params, bool fixpoint)
319 {
320 struct curve_points3 *corner_points;
321 struct pwl_result_data *rgb_resulted;
322 struct pwl_result_data *rgb;
323 struct pwl_result_data *rgb_plus_1;
324
325 int32_t region_start, region_end;
326 int32_t i;
327 uint32_t j, k, seg_distr[MAX_REGIONS_NUMBER], increment, start_index, hw_points;
328
329 if (output_tf == NULL || lut_params == NULL || output_tf->type == TF_TYPE_BYPASS)
330 return false;
331
332 PERF_TRACE_CTX(output_tf->ctx);
333
334 corner_points = lut_params->corner_points;
335 rgb_resulted = lut_params->rgb_resulted;
336 hw_points = 0;
337
338 memset(lut_params, 0, sizeof(struct pwl_params));
339 memset(seg_distr, 0, sizeof(seg_distr));
340
341 if (output_tf->tf == TRANSFER_FUNCTION_PQ || output_tf->tf == TRANSFER_FUNCTION_GAMMA22) {
342 /* 32 segments
343 * segments are from 2^-25 to 2^7
344 */
345 for (i = 0; i < NUMBER_REGIONS ; i++)
346 seg_distr[i] = 3;
347
348 region_start = -MAX_LOW_POINT;
349 region_end = NUMBER_REGIONS - MAX_LOW_POINT;
350 } else {
351 /* 11 segments
352 * segment is from 2^-10 to 2^1
353 * There are less than 256 points, for optimization
354 */
355 seg_distr[0] = 3;
356 seg_distr[1] = 4;
357 seg_distr[2] = 4;
358 seg_distr[3] = 4;
359 seg_distr[4] = 4;
360 seg_distr[5] = 4;
361 seg_distr[6] = 4;
362 seg_distr[7] = 4;
363 seg_distr[8] = 4;
364 seg_distr[9] = 4;
365 seg_distr[10] = 1;
366
367 region_start = -10;
368 region_end = 1;
369 }
370
371 for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++)
372 seg_distr[i] = -1;
373
374 for (k = 0; k < MAX_REGIONS_NUMBER; k++) {
375 if (seg_distr[k] != -1)
376 hw_points += (1 << seg_distr[k]);
377 }
378
379 j = 0;
380 for (k = 0; k < (region_end - region_start); k++) {
381 increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]);
382 start_index = (region_start + k + MAX_LOW_POINT) *
383 NUMBER_SW_SEGMENTS;
384 for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS;
385 i += increment) {
386 if (j == hw_points - 1)
387 break;
388 rgb_resulted[j].red = output_tf->tf_pts.red[i];
389 rgb_resulted[j].green = output_tf->tf_pts.green[i];
390 rgb_resulted[j].blue = output_tf->tf_pts.blue[i];
391 j++;
392 }
393 }
394
395 /* last point */
396 start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS;
397 rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index];
398 rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index];
399 rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index];
400
401 rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red;
402 rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green;
403 rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue;
404
405 // All 3 color channels have same x
406 corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
407 dc_fixpt_from_int(region_start));
408 corner_points[0].green.x = corner_points[0].red.x;
409 corner_points[0].blue.x = corner_points[0].red.x;
410
411 corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
412 dc_fixpt_from_int(region_end));
413 corner_points[1].green.x = corner_points[1].red.x;
414 corner_points[1].blue.x = corner_points[1].red.x;
415
416 corner_points[0].red.y = rgb_resulted[0].red;
417 corner_points[0].green.y = rgb_resulted[0].green;
418 corner_points[0].blue.y = rgb_resulted[0].blue;
419
420 corner_points[0].red.slope = dc_fixpt_div(corner_points[0].red.y,
421 corner_points[0].red.x);
422 corner_points[0].green.slope = dc_fixpt_div(corner_points[0].green.y,
423 corner_points[0].green.x);
424 corner_points[0].blue.slope = dc_fixpt_div(corner_points[0].blue.y,
425 corner_points[0].blue.x);
426
427 /* see comment above, m_arrPoints[1].y should be the Y value for the
428 * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1)
429 */
430 corner_points[1].red.y = rgb_resulted[hw_points - 1].red;
431 corner_points[1].green.y = rgb_resulted[hw_points - 1].green;
432 corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue;
433 corner_points[1].red.slope = dc_fixpt_zero;
434 corner_points[1].green.slope = dc_fixpt_zero;
435 corner_points[1].blue.slope = dc_fixpt_zero;
436
437 if (output_tf->tf == TRANSFER_FUNCTION_PQ) {
438 /* for PQ, we want to have a straight line from last HW X point,
439 * and the slope to be such that we hit 1.0 at 10000 nits.
440 */
441 const struct fixed31_32 end_value =
442 dc_fixpt_from_int(125);
443
444 corner_points[1].red.slope = dc_fixpt_div(
445 dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y),
446 dc_fixpt_sub(end_value, corner_points[1].red.x));
447 corner_points[1].green.slope = dc_fixpt_div(
448 dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y),
449 dc_fixpt_sub(end_value, corner_points[1].green.x));
450 corner_points[1].blue.slope = dc_fixpt_div(
451 dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y),
452 dc_fixpt_sub(end_value, corner_points[1].blue.x));
453 }
454
455 lut_params->hw_points_num = hw_points;
456
457 k = 0;
458 for (i = 1; i < MAX_REGIONS_NUMBER; i++) {
459 if (seg_distr[k] != -1) {
460 lut_params->arr_curve_points[k].segments_num =
461 seg_distr[k];
462 lut_params->arr_curve_points[i].offset =
463 lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]);
464 }
465 k++;
466 }
467
468 if (seg_distr[k] != -1)
469 lut_params->arr_curve_points[k].segments_num = seg_distr[k];
470
471 rgb = rgb_resulted;
472 rgb_plus_1 = rgb_resulted + 1;
473
474 i = 1;
475 while (i != hw_points + 1) {
476 rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red);
477 rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green);
478 rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);
479
480 if (fixpoint == true) {
481 rgb->delta_red_reg = dc_fixpt_clamp_u0d10(rgb->delta_red);
482 rgb->delta_green_reg = dc_fixpt_clamp_u0d10(rgb->delta_green);
483 rgb->delta_blue_reg = dc_fixpt_clamp_u0d10(rgb->delta_blue);
484 rgb->red_reg = dc_fixpt_clamp_u0d14(rgb->red);
485 rgb->green_reg = dc_fixpt_clamp_u0d14(rgb->green);
486 rgb->blue_reg = dc_fixpt_clamp_u0d14(rgb->blue);
487 }
488
489 ++rgb_plus_1;
490 ++rgb;
491 ++i;
492 }
493 cm_helper_convert_to_custom_float(rgb_resulted,
494 lut_params->corner_points,
495 hw_points, fixpoint);
496
497 return true;
498 }
499
500 #define NUM_DEGAMMA_REGIONS 12
501
502
cm_helper_translate_curve_to_degamma_hw_format(const struct dc_transfer_func * output_tf,struct pwl_params * lut_params)503 bool cm_helper_translate_curve_to_degamma_hw_format(
504 const struct dc_transfer_func *output_tf,
505 struct pwl_params *lut_params)
506 {
507 struct curve_points3 *corner_points;
508 struct pwl_result_data *rgb_resulted;
509 struct pwl_result_data *rgb;
510 struct pwl_result_data *rgb_plus_1;
511
512 int32_t region_start, region_end;
513 int32_t i;
514 uint32_t j, k, seg_distr[MAX_REGIONS_NUMBER], increment, start_index, hw_points;
515
516 if (output_tf == NULL || lut_params == NULL || output_tf->type == TF_TYPE_BYPASS)
517 return false;
518
519 PERF_TRACE_CTX(output_tf->ctx);
520
521 corner_points = lut_params->corner_points;
522 rgb_resulted = lut_params->rgb_resulted;
523 hw_points = 0;
524
525 memset(lut_params, 0, sizeof(struct pwl_params));
526 memset(seg_distr, 0, sizeof(seg_distr));
527
528 region_start = -NUM_DEGAMMA_REGIONS;
529 region_end = 0;
530
531
532 for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++)
533 seg_distr[i] = -1;
534 /* 12 segments
535 * segments are from 2^-12 to 0
536 */
537 for (i = 0; i < NUM_DEGAMMA_REGIONS ; i++)
538 seg_distr[i] = 4;
539
540 for (k = 0; k < MAX_REGIONS_NUMBER; k++) {
541 if (seg_distr[k] != -1)
542 hw_points += (1 << seg_distr[k]);
543 }
544
545 j = 0;
546 for (k = 0; k < (region_end - region_start); k++) {
547 increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]);
548 start_index = (region_start + k + MAX_LOW_POINT) *
549 NUMBER_SW_SEGMENTS;
550 for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS;
551 i += increment) {
552 if (j == hw_points - 1)
553 break;
554 rgb_resulted[j].red = output_tf->tf_pts.red[i];
555 rgb_resulted[j].green = output_tf->tf_pts.green[i];
556 rgb_resulted[j].blue = output_tf->tf_pts.blue[i];
557 j++;
558 }
559 }
560
561 /* last point */
562 start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS;
563 rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index];
564 rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index];
565 rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index];
566
567 rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red;
568 rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green;
569 rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue;
570
571 corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
572 dc_fixpt_from_int(region_start));
573 corner_points[0].green.x = corner_points[0].red.x;
574 corner_points[0].blue.x = corner_points[0].red.x;
575 corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
576 dc_fixpt_from_int(region_end));
577 corner_points[1].green.x = corner_points[1].red.x;
578 corner_points[1].blue.x = corner_points[1].red.x;
579
580 corner_points[0].red.y = rgb_resulted[0].red;
581 corner_points[0].green.y = rgb_resulted[0].green;
582 corner_points[0].blue.y = rgb_resulted[0].blue;
583
584 /* see comment above, m_arrPoints[1].y should be the Y value for the
585 * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1)
586 */
587 corner_points[1].red.y = rgb_resulted[hw_points - 1].red;
588 corner_points[1].green.y = rgb_resulted[hw_points - 1].green;
589 corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue;
590 corner_points[1].red.slope = dc_fixpt_zero;
591 corner_points[1].green.slope = dc_fixpt_zero;
592 corner_points[1].blue.slope = dc_fixpt_zero;
593
594 if (output_tf->tf == TRANSFER_FUNCTION_PQ) {
595 /* for PQ, we want to have a straight line from last HW X point,
596 * and the slope to be such that we hit 1.0 at 10000 nits.
597 */
598 const struct fixed31_32 end_value =
599 dc_fixpt_from_int(125);
600
601 corner_points[1].red.slope = dc_fixpt_div(
602 dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y),
603 dc_fixpt_sub(end_value, corner_points[1].red.x));
604 corner_points[1].green.slope = dc_fixpt_div(
605 dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y),
606 dc_fixpt_sub(end_value, corner_points[1].green.x));
607 corner_points[1].blue.slope = dc_fixpt_div(
608 dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y),
609 dc_fixpt_sub(end_value, corner_points[1].blue.x));
610 }
611
612 lut_params->hw_points_num = hw_points;
613
614 k = 0;
615 for (i = 1; i < MAX_REGIONS_NUMBER; i++) {
616 if (seg_distr[k] != -1) {
617 lut_params->arr_curve_points[k].segments_num =
618 seg_distr[k];
619 lut_params->arr_curve_points[i].offset =
620 lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]);
621 }
622 k++;
623 }
624
625 if (seg_distr[k] != -1)
626 lut_params->arr_curve_points[k].segments_num = seg_distr[k];
627
628 rgb = rgb_resulted;
629 rgb_plus_1 = rgb_resulted + 1;
630
631 i = 1;
632 while (i != hw_points + 1) {
633 rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red);
634 rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green);
635 rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);
636
637 ++rgb_plus_1;
638 ++rgb;
639 ++i;
640 }
641 cm_helper_convert_to_custom_float(rgb_resulted,
642 lut_params->corner_points,
643 hw_points, false);
644
645 return true;
646 }
647