1/*
2 * Copyright 2012-16 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
26#include "dce_transform.h"
27#include "reg_helper.h"
28#include "opp.h"
29#include "basics/conversion.h"
30#include "dc.h"
31
32#define REG(reg) \
33 (xfm_dce->regs->reg)
34
35#undef FN
36#define FN(reg_name, field_name) \
37 xfm_dce->xfm_shift->field_name, xfm_dce->xfm_mask->field_name
38
39#define CTX \
40 xfm_dce->base.ctx
41#define DC_LOGGER \
42 xfm_dce->base.ctx->logger
43
44#define IDENTITY_RATIO(ratio) (dc_fixpt_u2d19(ratio) == (1 << 19))
45#define GAMUT_MATRIX_SIZE 12
46#define SCL_PHASES 16
47
48enum dcp_out_trunc_round_mode {
49 DCP_OUT_TRUNC_ROUND_MODE_TRUNCATE,
50 DCP_OUT_TRUNC_ROUND_MODE_ROUND
51};
52
53enum dcp_out_trunc_round_depth {
54 DCP_OUT_TRUNC_ROUND_DEPTH_14BIT,
55 DCP_OUT_TRUNC_ROUND_DEPTH_13BIT,
56 DCP_OUT_TRUNC_ROUND_DEPTH_12BIT,
57 DCP_OUT_TRUNC_ROUND_DEPTH_11BIT,
58 DCP_OUT_TRUNC_ROUND_DEPTH_10BIT,
59 DCP_OUT_TRUNC_ROUND_DEPTH_9BIT,
60 DCP_OUT_TRUNC_ROUND_DEPTH_8BIT
61};
62
63/* defines the various methods of bit reduction available for use */
64enum dcp_bit_depth_reduction_mode {
65 DCP_BIT_DEPTH_REDUCTION_MODE_DITHER,
66 DCP_BIT_DEPTH_REDUCTION_MODE_ROUND,
67 DCP_BIT_DEPTH_REDUCTION_MODE_TRUNCATE,
68 DCP_BIT_DEPTH_REDUCTION_MODE_DISABLED,
69 DCP_BIT_DEPTH_REDUCTION_MODE_INVALID
70};
71
72enum dcp_spatial_dither_mode {
73 DCP_SPATIAL_DITHER_MODE_AAAA,
74 DCP_SPATIAL_DITHER_MODE_A_AA_A,
75 DCP_SPATIAL_DITHER_MODE_AABBAABB,
76 DCP_SPATIAL_DITHER_MODE_AABBCCAABBCC,
77 DCP_SPATIAL_DITHER_MODE_INVALID
78};
79
80enum dcp_spatial_dither_depth {
81 DCP_SPATIAL_DITHER_DEPTH_30BPP,
82 DCP_SPATIAL_DITHER_DEPTH_24BPP
83};
84
85enum csc_color_mode {
86 /* 00 - BITS2:0 Bypass */
87 CSC_COLOR_MODE_GRAPHICS_BYPASS,
88 /* 01 - hard coded coefficient TV RGB */
89 CSC_COLOR_MODE_GRAPHICS_PREDEFINED,
90 /* 04 - programmable OUTPUT CSC coefficient */
91 CSC_COLOR_MODE_GRAPHICS_OUTPUT_CSC,
92};
93
94enum grph_color_adjust_option {
95 GRPH_COLOR_MATRIX_HW_DEFAULT = 1,
96 GRPH_COLOR_MATRIX_SW
97};
98
99static const struct out_csc_color_matrix global_color_matrix[] = {
100{ COLOR_SPACE_SRGB,
101 { 0x2000, 0, 0, 0, 0, 0x2000, 0, 0, 0, 0, 0x2000, 0} },
102{ COLOR_SPACE_SRGB_LIMITED,
103 { 0x1B60, 0, 0, 0x200, 0, 0x1B60, 0, 0x200, 0, 0, 0x1B60, 0x200} },
104{ COLOR_SPACE_YCBCR601,
105 { 0xE00, 0xF447, 0xFDB9, 0x1000, 0x82F, 0x1012, 0x31F, 0x200, 0xFB47,
106 0xF6B9, 0xE00, 0x1000} },
107{ COLOR_SPACE_YCBCR709, { 0xE00, 0xF349, 0xFEB7, 0x1000, 0x5D2, 0x1394, 0x1FA,
108 0x200, 0xFCCB, 0xF535, 0xE00, 0x1000} },
109/* TODO: correct values below */
110{ COLOR_SPACE_YCBCR601_LIMITED, { 0xE00, 0xF447, 0xFDB9, 0x1000, 0x991,
111 0x12C9, 0x3A6, 0x200, 0xFB47, 0xF6B9, 0xE00, 0x1000} },
112{ COLOR_SPACE_YCBCR709_LIMITED, { 0xE00, 0xF349, 0xFEB7, 0x1000, 0x6CE, 0x16E3,
113 0x24F, 0x200, 0xFCCB, 0xF535, 0xE00, 0x1000} }
114};
115
116static bool setup_scaling_configuration(
117 struct dce_transform *xfm_dce,
118 const struct scaler_data *data)
119{
120 REG_SET(SCL_BYPASS_CONTROL, 0, SCL_BYPASS_MODE, 0);
121
122 if (data->taps.h_taps + data->taps.v_taps <= 2) {
123 /* Set bypass */
124 if (xfm_dce->xfm_mask->SCL_PSCL_EN != 0)
125 REG_UPDATE_2(SCL_MODE, SCL_MODE, 0, SCL_PSCL_EN, 0);
126 else
127 REG_UPDATE(SCL_MODE, SCL_MODE, 0);
128 return false;
129 }
130
131 REG_SET_2(SCL_TAP_CONTROL, 0,
132 SCL_H_NUM_OF_TAPS, data->taps.h_taps - 1,
133 SCL_V_NUM_OF_TAPS, data->taps.v_taps - 1);
134
135 if (data->format <= PIXEL_FORMAT_GRPH_END)
136 REG_UPDATE(SCL_MODE, SCL_MODE, 1);
137 else
138 REG_UPDATE(SCL_MODE, SCL_MODE, 2);
139
140 if (xfm_dce->xfm_mask->SCL_PSCL_EN != 0)
141 REG_UPDATE(SCL_MODE, SCL_PSCL_EN, 1);
142
143 /* 1 - Replace out of bound pixels with edge */
144 REG_SET(SCL_CONTROL, 0, SCL_BOUNDARY_MODE, 1);
145
146 return true;
147}
148
149#if defined(CONFIG_DRM_AMD_DC_SI)
150static bool dce60_setup_scaling_configuration(
151 struct dce_transform *xfm_dce,
152 const struct scaler_data *data)
153{
154 REG_SET(SCL_BYPASS_CONTROL, 0, SCL_BYPASS_MODE, 0);
155
156 if (data->taps.h_taps + data->taps.v_taps <= 2) {
157 /* Set bypass */
158
159 /* DCE6 has no SCL_MODE register, skip scale mode programming */
160
161 return false;
162 }
163
164 REG_SET_2(SCL_TAP_CONTROL, 0,
165 SCL_H_NUM_OF_TAPS, data->taps.h_taps - 1,
166 SCL_V_NUM_OF_TAPS, data->taps.v_taps - 1);
167
168 /* DCE6 has no SCL_MODE register, skip scale mode programming */
169
170 /* DCE6 has no SCL_BOUNDARY_MODE bit, skip replace out of bound pixels */
171
172 return true;
173}
174#endif
175
176static void program_overscan(
177 struct dce_transform *xfm_dce,
178 const struct scaler_data *data)
179{
180 int overscan_right = data->h_active
181 - data->recout.x - data->recout.width;
182 int overscan_bottom = data->v_active
183 - data->recout.y - data->recout.height;
184
185 if (xfm_dce->base.ctx->dc->debug.visual_confirm != VISUAL_CONFIRM_DISABLE) {
186 overscan_bottom += 2;
187 overscan_right += 2;
188 }
189
190 if (overscan_right < 0) {
191 BREAK_TO_DEBUGGER();
192 overscan_right = 0;
193 }
194 if (overscan_bottom < 0) {
195 BREAK_TO_DEBUGGER();
196 overscan_bottom = 0;
197 }
198
199 REG_SET_2(EXT_OVERSCAN_LEFT_RIGHT, 0,
200 EXT_OVERSCAN_LEFT, data->recout.x,
201 EXT_OVERSCAN_RIGHT, overscan_right);
202 REG_SET_2(EXT_OVERSCAN_TOP_BOTTOM, 0,
203 EXT_OVERSCAN_TOP, data->recout.y,
204 EXT_OVERSCAN_BOTTOM, overscan_bottom);
205}
206
207static void program_multi_taps_filter(
208 struct dce_transform *xfm_dce,
209 int taps,
210 const uint16_t *coeffs,
211 enum ram_filter_type filter_type)
212{
213 int phase, pair;
214 int array_idx = 0;
215 int taps_pairs = (taps + 1) / 2;
216 int phases_to_program = SCL_PHASES / 2 + 1;
217
218 uint32_t power_ctl = 0;
219
220 if (!coeffs)
221 return;
222
223 /*We need to disable power gating on coeff memory to do programming*/
224 if (REG(DCFE_MEM_PWR_CTRL)) {
225 power_ctl = REG_READ(DCFE_MEM_PWR_CTRL);
226 REG_SET(DCFE_MEM_PWR_CTRL, power_ctl, SCL_COEFF_MEM_PWR_DIS, 1);
227
228 REG_WAIT(DCFE_MEM_PWR_STATUS, SCL_COEFF_MEM_PWR_STATE, 0, 1, 10);
229 }
230 for (phase = 0; phase < phases_to_program; phase++) {
231 /*we always program N/2 + 1 phases, total phases N, but N/2-1 are just mirror
232 phase 0 is unique and phase N/2 is unique if N is even*/
233 for (pair = 0; pair < taps_pairs; pair++) {
234 uint16_t odd_coeff = 0;
235 uint16_t even_coeff = coeffs[array_idx];
236
237 REG_SET_3(SCL_COEF_RAM_SELECT, 0,
238 SCL_C_RAM_FILTER_TYPE, filter_type,
239 SCL_C_RAM_PHASE, phase,
240 SCL_C_RAM_TAP_PAIR_IDX, pair);
241
242 if (taps % 2 && pair == taps_pairs - 1)
243 array_idx++;
244 else {
245 odd_coeff = coeffs[array_idx + 1];
246 array_idx += 2;
247 }
248
249 REG_SET_4(SCL_COEF_RAM_TAP_DATA, 0,
250 SCL_C_RAM_EVEN_TAP_COEF_EN, 1,
251 SCL_C_RAM_EVEN_TAP_COEF, even_coeff,
252 SCL_C_RAM_ODD_TAP_COEF_EN, 1,
253 SCL_C_RAM_ODD_TAP_COEF, odd_coeff);
254 }
255 }
256
257 /*We need to restore power gating on coeff memory to initial state*/
258 if (REG(DCFE_MEM_PWR_CTRL))
259 REG_WRITE(DCFE_MEM_PWR_CTRL, power_ctl);
260}
261
262static void program_viewport(
263 struct dce_transform *xfm_dce,
264 const struct rect *view_port)
265{
266 REG_SET_2(VIEWPORT_START, 0,
267 VIEWPORT_X_START, view_port->x,
268 VIEWPORT_Y_START, view_port->y);
269
270 REG_SET_2(VIEWPORT_SIZE, 0,
271 VIEWPORT_HEIGHT, view_port->height,
272 VIEWPORT_WIDTH, view_port->width);
273
274 /* TODO: add stereo support */
275}
276
277static void calculate_inits(
278 struct dce_transform *xfm_dce,
279 const struct scaler_data *data,
280 struct scl_ratios_inits *inits)
281{
282 struct fixed31_32 h_init;
283 struct fixed31_32 v_init;
284
285 inits->h_int_scale_ratio =
286 dc_fixpt_u2d19(arg: data->ratios.horz) << 5;
287 inits->v_int_scale_ratio =
288 dc_fixpt_u2d19(arg: data->ratios.vert) << 5;
289
290 h_init =
291 dc_fixpt_div_int(
292 arg1: dc_fixpt_add(
293 arg1: data->ratios.horz,
294 arg2: dc_fixpt_from_int(arg: data->taps.h_taps + 1)),
295 arg2: 2);
296 inits->h_init.integer = dc_fixpt_floor(arg: h_init);
297 inits->h_init.fraction = dc_fixpt_u0d19(arg: h_init) << 5;
298
299 v_init =
300 dc_fixpt_div_int(
301 arg1: dc_fixpt_add(
302 arg1: data->ratios.vert,
303 arg2: dc_fixpt_from_int(arg: data->taps.v_taps + 1)),
304 arg2: 2);
305 inits->v_init.integer = dc_fixpt_floor(arg: v_init);
306 inits->v_init.fraction = dc_fixpt_u0d19(arg: v_init) << 5;
307}
308
309#if defined(CONFIG_DRM_AMD_DC_SI)
310static void dce60_calculate_inits(
311 struct dce_transform *xfm_dce,
312 const struct scaler_data *data,
313 struct sclh_ratios_inits *inits)
314{
315 struct fixed31_32 v_init;
316
317 inits->h_int_scale_ratio =
318 dc_fixpt_u2d19(arg: data->ratios.horz) << 5;
319 inits->v_int_scale_ratio =
320 dc_fixpt_u2d19(arg: data->ratios.vert) << 5;
321
322 /* DCE6 h_init_luma setting inspired by DCE110 */
323 inits->h_init_luma.integer = 1;
324
325 /* DCE6 h_init_chroma setting inspired by DCE110 */
326 inits->h_init_chroma.integer = 1;
327
328 v_init =
329 dc_fixpt_div_int(
330 arg1: dc_fixpt_add(
331 arg1: data->ratios.vert,
332 arg2: dc_fixpt_from_int(arg: data->taps.v_taps + 1)),
333 arg2: 2);
334 inits->v_init.integer = dc_fixpt_floor(arg: v_init);
335 inits->v_init.fraction = dc_fixpt_u0d19(arg: v_init) << 5;
336}
337#endif
338
339static void program_scl_ratios_inits(
340 struct dce_transform *xfm_dce,
341 struct scl_ratios_inits *inits)
342{
343
344 REG_SET(SCL_HORZ_FILTER_SCALE_RATIO, 0,
345 SCL_H_SCALE_RATIO, inits->h_int_scale_ratio);
346
347 REG_SET(SCL_VERT_FILTER_SCALE_RATIO, 0,
348 SCL_V_SCALE_RATIO, inits->v_int_scale_ratio);
349
350 REG_SET_2(SCL_HORZ_FILTER_INIT, 0,
351 SCL_H_INIT_INT, inits->h_init.integer,
352 SCL_H_INIT_FRAC, inits->h_init.fraction);
353
354 REG_SET_2(SCL_VERT_FILTER_INIT, 0,
355 SCL_V_INIT_INT, inits->v_init.integer,
356 SCL_V_INIT_FRAC, inits->v_init.fraction);
357
358 REG_WRITE(SCL_AUTOMATIC_MODE_CONTROL, 0);
359}
360
361#if defined(CONFIG_DRM_AMD_DC_SI)
362static void dce60_program_scl_ratios_inits(
363 struct dce_transform *xfm_dce,
364 struct sclh_ratios_inits *inits)
365{
366
367 REG_SET(SCL_HORZ_FILTER_SCALE_RATIO, 0,
368 SCL_H_SCALE_RATIO, inits->h_int_scale_ratio);
369
370 REG_SET(SCL_VERT_FILTER_SCALE_RATIO, 0,
371 SCL_V_SCALE_RATIO, inits->v_int_scale_ratio);
372
373 /* DCE6 has SCL_HORZ_FILTER_INIT_RGB_LUMA register */
374 REG_SET_2(SCL_HORZ_FILTER_INIT_RGB_LUMA, 0,
375 SCL_H_INIT_INT_RGB_Y, inits->h_init_luma.integer,
376 SCL_H_INIT_FRAC_RGB_Y, inits->h_init_luma.fraction);
377
378 /* DCE6 has SCL_HORZ_FILTER_INIT_CHROMA register */
379 REG_SET_2(SCL_HORZ_FILTER_INIT_CHROMA, 0,
380 SCL_H_INIT_INT_CBCR, inits->h_init_chroma.integer,
381 SCL_H_INIT_FRAC_CBCR, inits->h_init_chroma.fraction);
382
383 REG_SET_2(SCL_VERT_FILTER_INIT, 0,
384 SCL_V_INIT_INT, inits->v_init.integer,
385 SCL_V_INIT_FRAC, inits->v_init.fraction);
386
387 REG_WRITE(SCL_AUTOMATIC_MODE_CONTROL, 0);
388}
389#endif
390
391static const uint16_t *get_filter_coeffs_16p(int taps, struct fixed31_32 ratio)
392{
393 if (taps == 4)
394 return get_filter_4tap_16p(ratio);
395 else if (taps == 3)
396 return get_filter_3tap_16p(ratio);
397 else if (taps == 2)
398 return get_filter_2tap_16p();
399 else if (taps == 1)
400 return NULL;
401 else {
402 /* should never happen, bug */
403 BREAK_TO_DEBUGGER();
404 return NULL;
405 }
406}
407
408static void dce_transform_set_scaler(
409 struct transform *xfm,
410 const struct scaler_data *data)
411{
412 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
413 bool is_scaling_required;
414 bool filter_updated = false;
415 const uint16_t *coeffs_v, *coeffs_h;
416
417 /*Use all three pieces of memory always*/
418 REG_SET_2(LB_MEMORY_CTRL, 0,
419 LB_MEMORY_CONFIG, 0,
420 LB_MEMORY_SIZE, xfm_dce->lb_memory_size);
421
422 /* Clear SCL_F_SHARP_CONTROL value to 0 */
423 REG_WRITE(SCL_F_SHARP_CONTROL, 0);
424
425 /* 1. Program overscan */
426 program_overscan(xfm_dce, data);
427
428 /* 2. Program taps and configuration */
429 is_scaling_required = setup_scaling_configuration(xfm_dce, data);
430
431 if (is_scaling_required) {
432 /* 3. Calculate and program ratio, filter initialization */
433 struct scl_ratios_inits inits = { 0 };
434
435 calculate_inits(xfm_dce, data, inits: &inits);
436
437 program_scl_ratios_inits(xfm_dce, inits: &inits);
438
439 coeffs_v = get_filter_coeffs_16p(taps: data->taps.v_taps, ratio: data->ratios.vert);
440 coeffs_h = get_filter_coeffs_16p(taps: data->taps.h_taps, ratio: data->ratios.horz);
441
442 if (coeffs_v != xfm_dce->filter_v || coeffs_h != xfm_dce->filter_h) {
443 /* 4. Program vertical filters */
444 if (xfm_dce->filter_v == NULL)
445 REG_SET(SCL_VERT_FILTER_CONTROL, 0,
446 SCL_V_2TAP_HARDCODE_COEF_EN, 0);
447 program_multi_taps_filter(
448 xfm_dce,
449 taps: data->taps.v_taps,
450 coeffs: coeffs_v,
451 filter_type: FILTER_TYPE_RGB_Y_VERTICAL);
452 program_multi_taps_filter(
453 xfm_dce,
454 taps: data->taps.v_taps,
455 coeffs: coeffs_v,
456 filter_type: FILTER_TYPE_ALPHA_VERTICAL);
457
458 /* 5. Program horizontal filters */
459 if (xfm_dce->filter_h == NULL)
460 REG_SET(SCL_HORZ_FILTER_CONTROL, 0,
461 SCL_H_2TAP_HARDCODE_COEF_EN, 0);
462 program_multi_taps_filter(
463 xfm_dce,
464 taps: data->taps.h_taps,
465 coeffs: coeffs_h,
466 filter_type: FILTER_TYPE_RGB_Y_HORIZONTAL);
467 program_multi_taps_filter(
468 xfm_dce,
469 taps: data->taps.h_taps,
470 coeffs: coeffs_h,
471 filter_type: FILTER_TYPE_ALPHA_HORIZONTAL);
472
473 xfm_dce->filter_v = coeffs_v;
474 xfm_dce->filter_h = coeffs_h;
475 filter_updated = true;
476 }
477 }
478
479 /* 6. Program the viewport */
480 program_viewport(xfm_dce, view_port: &data->viewport);
481
482 /* 7. Set bit to flip to new coefficient memory */
483 if (filter_updated)
484 REG_UPDATE(SCL_UPDATE, SCL_COEF_UPDATE_COMPLETE, 1);
485
486 REG_UPDATE(LB_DATA_FORMAT, ALPHA_EN, data->lb_params.alpha_en);
487}
488
489#if defined(CONFIG_DRM_AMD_DC_SI)
490static void dce60_transform_set_scaler(
491 struct transform *xfm,
492 const struct scaler_data *data)
493{
494 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
495 bool is_scaling_required;
496 const uint16_t *coeffs_v, *coeffs_h;
497
498 /*Use whole line buffer memory always*/
499 REG_SET(DC_LB_MEMORY_SPLIT, 0,
500 DC_LB_MEMORY_CONFIG, 0);
501
502 REG_SET(DC_LB_MEM_SIZE, 0,
503 DC_LB_MEM_SIZE, xfm_dce->lb_memory_size);
504
505 /* Clear SCL_F_SHARP_CONTROL value to 0 */
506 REG_WRITE(SCL_F_SHARP_CONTROL, 0);
507
508 /* 1. Program overscan */
509 program_overscan(xfm_dce, data);
510
511 /* 2. Program taps and configuration */
512 is_scaling_required = dce60_setup_scaling_configuration(xfm_dce, data);
513
514 if (is_scaling_required) {
515 /* 3. Calculate and program ratio, DCE6 filter initialization */
516 struct sclh_ratios_inits inits = { 0 };
517
518 /* DCE6 has specific calculate_inits() function */
519 dce60_calculate_inits(xfm_dce, data, inits: &inits);
520
521 /* DCE6 has specific program_scl_ratios_inits() function */
522 dce60_program_scl_ratios_inits(xfm_dce, inits: &inits);
523
524 coeffs_v = get_filter_coeffs_16p(taps: data->taps.v_taps, ratio: data->ratios.vert);
525 coeffs_h = get_filter_coeffs_16p(taps: data->taps.h_taps, ratio: data->ratios.horz);
526
527 if (coeffs_v != xfm_dce->filter_v || coeffs_h != xfm_dce->filter_h) {
528 /* 4. Program vertical filters */
529 if (xfm_dce->filter_v == NULL)
530 REG_SET(SCL_VERT_FILTER_CONTROL, 0,
531 SCL_V_2TAP_HARDCODE_COEF_EN, 0);
532 program_multi_taps_filter(
533 xfm_dce,
534 taps: data->taps.v_taps,
535 coeffs: coeffs_v,
536 filter_type: FILTER_TYPE_RGB_Y_VERTICAL);
537 program_multi_taps_filter(
538 xfm_dce,
539 taps: data->taps.v_taps,
540 coeffs: coeffs_v,
541 filter_type: FILTER_TYPE_ALPHA_VERTICAL);
542
543 /* 5. Program horizontal filters */
544 if (xfm_dce->filter_h == NULL)
545 REG_SET(SCL_HORZ_FILTER_CONTROL, 0,
546 SCL_H_2TAP_HARDCODE_COEF_EN, 0);
547 program_multi_taps_filter(
548 xfm_dce,
549 taps: data->taps.h_taps,
550 coeffs: coeffs_h,
551 filter_type: FILTER_TYPE_RGB_Y_HORIZONTAL);
552 program_multi_taps_filter(
553 xfm_dce,
554 taps: data->taps.h_taps,
555 coeffs: coeffs_h,
556 filter_type: FILTER_TYPE_ALPHA_HORIZONTAL);
557
558 xfm_dce->filter_v = coeffs_v;
559 xfm_dce->filter_h = coeffs_h;
560 }
561 }
562
563 /* 6. Program the viewport */
564 program_viewport(xfm_dce, view_port: &data->viewport);
565
566 /* DCE6 has no SCL_COEF_UPDATE_COMPLETE bit to flip to new coefficient memory */
567
568 /* DCE6 DATA_FORMAT register does not support ALPHA_EN */
569}
570#endif
571
572/*****************************************************************************
573 * set_clamp
574 *
575 * @param depth : bit depth to set the clamp to (should match denorm)
576 *
577 * @brief
578 * Programs clamp according to panel bit depth.
579 *
580 *******************************************************************************/
581static void set_clamp(
582 struct dce_transform *xfm_dce,
583 enum dc_color_depth depth)
584{
585 int clamp_max = 0;
586
587 /* At the clamp block the data will be MSB aligned, so we set the max
588 * clamp accordingly.
589 * For example, the max value for 6 bits MSB aligned (14 bit bus) would
590 * be "11 1111 0000 0000" in binary, so 0x3F00.
591 */
592 switch (depth) {
593 case COLOR_DEPTH_666:
594 /* 6bit MSB aligned on 14 bit bus '11 1111 0000 0000' */
595 clamp_max = 0x3F00;
596 break;
597 case COLOR_DEPTH_888:
598 /* 8bit MSB aligned on 14 bit bus '11 1111 1100 0000' */
599 clamp_max = 0x3FC0;
600 break;
601 case COLOR_DEPTH_101010:
602 /* 10bit MSB aligned on 14 bit bus '11 1111 1111 0000' */
603 clamp_max = 0x3FF0;
604 break;
605 case COLOR_DEPTH_121212:
606 /* 12bit MSB aligned on 14 bit bus '11 1111 1111 1100' */
607 clamp_max = 0x3FFC;
608 break;
609 default:
610 clamp_max = 0x3FC0;
611 BREAK_TO_DEBUGGER(); /* Invalid clamp bit depth */
612 }
613 REG_SET_2(OUT_CLAMP_CONTROL_B_CB, 0,
614 OUT_CLAMP_MIN_B_CB, 0,
615 OUT_CLAMP_MAX_B_CB, clamp_max);
616
617 REG_SET_2(OUT_CLAMP_CONTROL_G_Y, 0,
618 OUT_CLAMP_MIN_G_Y, 0,
619 OUT_CLAMP_MAX_G_Y, clamp_max);
620
621 REG_SET_2(OUT_CLAMP_CONTROL_R_CR, 0,
622 OUT_CLAMP_MIN_R_CR, 0,
623 OUT_CLAMP_MAX_R_CR, clamp_max);
624}
625
626/*******************************************************************************
627 * set_round
628 *
629 * @brief
630 * Programs Round/Truncate
631 *
632 * @param [in] mode :round or truncate
633 * @param [in] depth :bit depth to round/truncate to
634 OUT_ROUND_TRUNC_MODE 3:0 0xA Output data round or truncate mode
635 POSSIBLE VALUES:
636 00 - truncate to u0.12
637 01 - truncate to u0.11
638 02 - truncate to u0.10
639 03 - truncate to u0.9
640 04 - truncate to u0.8
641 05 - reserved
642 06 - truncate to u0.14
643 07 - truncate to u0.13 set_reg_field_value(
644 value,
645 clamp_max,
646 OUT_CLAMP_CONTROL_R_CR,
647 OUT_CLAMP_MAX_R_CR);
648 08 - round to u0.12
649 09 - round to u0.11
650 10 - round to u0.10
651 11 - round to u0.9
652 12 - round to u0.8
653 13 - reserved
654 14 - round to u0.14
655 15 - round to u0.13
656
657 ******************************************************************************/
658static void set_round(
659 struct dce_transform *xfm_dce,
660 enum dcp_out_trunc_round_mode mode,
661 enum dcp_out_trunc_round_depth depth)
662{
663 int depth_bits = 0;
664 int mode_bit = 0;
665
666 /* set up bit depth */
667 switch (depth) {
668 case DCP_OUT_TRUNC_ROUND_DEPTH_14BIT:
669 depth_bits = 6;
670 break;
671 case DCP_OUT_TRUNC_ROUND_DEPTH_13BIT:
672 depth_bits = 7;
673 break;
674 case DCP_OUT_TRUNC_ROUND_DEPTH_12BIT:
675 depth_bits = 0;
676 break;
677 case DCP_OUT_TRUNC_ROUND_DEPTH_11BIT:
678 depth_bits = 1;
679 break;
680 case DCP_OUT_TRUNC_ROUND_DEPTH_10BIT:
681 depth_bits = 2;
682 break;
683 case DCP_OUT_TRUNC_ROUND_DEPTH_9BIT:
684 depth_bits = 3;
685 break;
686 case DCP_OUT_TRUNC_ROUND_DEPTH_8BIT:
687 depth_bits = 4;
688 break;
689 default:
690 depth_bits = 4;
691 BREAK_TO_DEBUGGER(); /* Invalid dcp_out_trunc_round_depth */
692 }
693
694 /* set up round or truncate */
695 switch (mode) {
696 case DCP_OUT_TRUNC_ROUND_MODE_TRUNCATE:
697 mode_bit = 0;
698 break;
699 case DCP_OUT_TRUNC_ROUND_MODE_ROUND:
700 mode_bit = 1;
701 break;
702 default:
703 BREAK_TO_DEBUGGER(); /* Invalid dcp_out_trunc_round_mode */
704 }
705
706 depth_bits |= mode_bit << 3;
707
708 REG_SET(OUT_ROUND_CONTROL, 0, OUT_ROUND_TRUNC_MODE, depth_bits);
709}
710
711/*****************************************************************************
712 * set_dither
713 *
714 * @brief
715 * Programs Dither
716 *
717 * @param [in] dither_enable : enable dither
718 * @param [in] dither_mode : dither mode to set
719 * @param [in] dither_depth : bit depth to dither to
720 * @param [in] frame_random_enable : enable frame random
721 * @param [in] rgb_random_enable : enable rgb random
722 * @param [in] highpass_random_enable : enable highpass random
723 *
724 ******************************************************************************/
725
726static void set_dither(
727 struct dce_transform *xfm_dce,
728 bool dither_enable,
729 enum dcp_spatial_dither_mode dither_mode,
730 enum dcp_spatial_dither_depth dither_depth,
731 bool frame_random_enable,
732 bool rgb_random_enable,
733 bool highpass_random_enable)
734{
735 int dither_depth_bits = 0;
736 int dither_mode_bits = 0;
737
738 switch (dither_mode) {
739 case DCP_SPATIAL_DITHER_MODE_AAAA:
740 dither_mode_bits = 0;
741 break;
742 case DCP_SPATIAL_DITHER_MODE_A_AA_A:
743 dither_mode_bits = 1;
744 break;
745 case DCP_SPATIAL_DITHER_MODE_AABBAABB:
746 dither_mode_bits = 2;
747 break;
748 case DCP_SPATIAL_DITHER_MODE_AABBCCAABBCC:
749 dither_mode_bits = 3;
750 break;
751 default:
752 /* Invalid dcp_spatial_dither_mode */
753 BREAK_TO_DEBUGGER();
754 }
755
756 switch (dither_depth) {
757 case DCP_SPATIAL_DITHER_DEPTH_30BPP:
758 dither_depth_bits = 0;
759 break;
760 case DCP_SPATIAL_DITHER_DEPTH_24BPP:
761 dither_depth_bits = 1;
762 break;
763 default:
764 /* Invalid dcp_spatial_dither_depth */
765 BREAK_TO_DEBUGGER();
766 }
767
768 /* write the register */
769 REG_SET_6(DCP_SPATIAL_DITHER_CNTL, 0,
770 DCP_SPATIAL_DITHER_EN, dither_enable,
771 DCP_SPATIAL_DITHER_MODE, dither_mode_bits,
772 DCP_SPATIAL_DITHER_DEPTH, dither_depth_bits,
773 DCP_FRAME_RANDOM_ENABLE, frame_random_enable,
774 DCP_RGB_RANDOM_ENABLE, rgb_random_enable,
775 DCP_HIGHPASS_RANDOM_ENABLE, highpass_random_enable);
776}
777
778/*****************************************************************************
779 * dce_transform_bit_depth_reduction_program
780 *
781 * @brief
782 * Programs the DCP bit depth reduction registers (Clamp, Round/Truncate,
783 * Dither) for dce
784 *
785 * @param depth : bit depth to set the clamp to (should match denorm)
786 *
787 ******************************************************************************/
788static void program_bit_depth_reduction(
789 struct dce_transform *xfm_dce,
790 enum dc_color_depth depth,
791 const struct bit_depth_reduction_params *bit_depth_params)
792{
793 enum dcp_out_trunc_round_depth trunc_round_depth;
794 enum dcp_out_trunc_round_mode trunc_mode;
795 bool spatial_dither_enable;
796
797 ASSERT(depth <= COLOR_DEPTH_121212); /* Invalid clamp bit depth */
798
799 spatial_dither_enable = bit_depth_params->flags.SPATIAL_DITHER_ENABLED;
800 /* Default to 12 bit truncation without rounding */
801 trunc_round_depth = DCP_OUT_TRUNC_ROUND_DEPTH_12BIT;
802 trunc_mode = DCP_OUT_TRUNC_ROUND_MODE_TRUNCATE;
803
804 if (bit_depth_params->flags.TRUNCATE_ENABLED) {
805 /* Don't enable dithering if truncation is enabled */
806 spatial_dither_enable = false;
807 trunc_mode = bit_depth_params->flags.TRUNCATE_MODE ?
808 DCP_OUT_TRUNC_ROUND_MODE_ROUND :
809 DCP_OUT_TRUNC_ROUND_MODE_TRUNCATE;
810
811 if (bit_depth_params->flags.TRUNCATE_DEPTH == 0 ||
812 bit_depth_params->flags.TRUNCATE_DEPTH == 1)
813 trunc_round_depth = DCP_OUT_TRUNC_ROUND_DEPTH_8BIT;
814 else if (bit_depth_params->flags.TRUNCATE_DEPTH == 2)
815 trunc_round_depth = DCP_OUT_TRUNC_ROUND_DEPTH_10BIT;
816 else {
817 /*
818 * Invalid truncate/round depth. Setting here to 12bit
819 * to prevent use-before-initialize errors.
820 */
821 trunc_round_depth = DCP_OUT_TRUNC_ROUND_DEPTH_12BIT;
822 BREAK_TO_DEBUGGER();
823 }
824 }
825
826 set_clamp(xfm_dce, depth);
827 set_round(xfm_dce, mode: trunc_mode, depth: trunc_round_depth);
828 set_dither(xfm_dce,
829 dither_enable: spatial_dither_enable,
830 dither_mode: DCP_SPATIAL_DITHER_MODE_A_AA_A,
831 dither_depth: DCP_SPATIAL_DITHER_DEPTH_30BPP,
832 frame_random_enable: bit_depth_params->flags.FRAME_RANDOM,
833 rgb_random_enable: bit_depth_params->flags.RGB_RANDOM,
834 highpass_random_enable: bit_depth_params->flags.HIGHPASS_RANDOM);
835}
836
837#if defined(CONFIG_DRM_AMD_DC_SI)
838/*****************************************************************************
839 * dce60_transform_bit_depth_reduction program
840 *
841 * @brief
842 * Programs the DCP bit depth reduction registers (Clamp, Round/Truncate,
843 * Dither) for dce
844 *
845 * @param depth : bit depth to set the clamp to (should match denorm)
846 *
847 ******************************************************************************/
848static void dce60_program_bit_depth_reduction(
849 struct dce_transform *xfm_dce,
850 enum dc_color_depth depth,
851 const struct bit_depth_reduction_params *bit_depth_params)
852{
853 enum dcp_out_trunc_round_depth trunc_round_depth;
854 enum dcp_out_trunc_round_mode trunc_mode;
855 bool spatial_dither_enable;
856
857 ASSERT(depth <= COLOR_DEPTH_121212); /* Invalid clamp bit depth */
858
859 spatial_dither_enable = bit_depth_params->flags.SPATIAL_DITHER_ENABLED;
860 /* Default to 12 bit truncation without rounding */
861 trunc_round_depth = DCP_OUT_TRUNC_ROUND_DEPTH_12BIT;
862 trunc_mode = DCP_OUT_TRUNC_ROUND_MODE_TRUNCATE;
863
864 if (bit_depth_params->flags.TRUNCATE_ENABLED) {
865 /* Don't enable dithering if truncation is enabled */
866 spatial_dither_enable = false;
867 trunc_mode = bit_depth_params->flags.TRUNCATE_MODE ?
868 DCP_OUT_TRUNC_ROUND_MODE_ROUND :
869 DCP_OUT_TRUNC_ROUND_MODE_TRUNCATE;
870
871 if (bit_depth_params->flags.TRUNCATE_DEPTH == 0 ||
872 bit_depth_params->flags.TRUNCATE_DEPTH == 1)
873 trunc_round_depth = DCP_OUT_TRUNC_ROUND_DEPTH_8BIT;
874 else if (bit_depth_params->flags.TRUNCATE_DEPTH == 2)
875 trunc_round_depth = DCP_OUT_TRUNC_ROUND_DEPTH_10BIT;
876 else {
877 /*
878 * Invalid truncate/round depth. Setting here to 12bit
879 * to prevent use-before-initialize errors.
880 */
881 trunc_round_depth = DCP_OUT_TRUNC_ROUND_DEPTH_12BIT;
882 BREAK_TO_DEBUGGER();
883 }
884 }
885
886 /* DCE6 has no OUT_CLAMP_CONTROL_* registers - set_clamp() is skipped */
887 set_round(xfm_dce, mode: trunc_mode, depth: trunc_round_depth);
888 set_dither(xfm_dce,
889 dither_enable: spatial_dither_enable,
890 dither_mode: DCP_SPATIAL_DITHER_MODE_A_AA_A,
891 dither_depth: DCP_SPATIAL_DITHER_DEPTH_30BPP,
892 frame_random_enable: bit_depth_params->flags.FRAME_RANDOM,
893 rgb_random_enable: bit_depth_params->flags.RGB_RANDOM,
894 highpass_random_enable: bit_depth_params->flags.HIGHPASS_RANDOM);
895}
896#endif
897
898static int dce_transform_get_max_num_of_supported_lines(
899 struct dce_transform *xfm_dce,
900 enum lb_pixel_depth depth,
901 int pixel_width)
902{
903 int pixels_per_entries = 0;
904 int max_pixels_supports = 0;
905
906 ASSERT(pixel_width);
907
908 /* Find number of pixels that can fit into a single LB entry and
909 * take floor of the value since we cannot store a single pixel
910 * across multiple entries. */
911 switch (depth) {
912 case LB_PIXEL_DEPTH_18BPP:
913 pixels_per_entries = xfm_dce->lb_bits_per_entry / 18;
914 break;
915
916 case LB_PIXEL_DEPTH_24BPP:
917 pixels_per_entries = xfm_dce->lb_bits_per_entry / 24;
918 break;
919
920 case LB_PIXEL_DEPTH_30BPP:
921 pixels_per_entries = xfm_dce->lb_bits_per_entry / 30;
922 break;
923
924 case LB_PIXEL_DEPTH_36BPP:
925 pixels_per_entries = xfm_dce->lb_bits_per_entry / 36;
926 break;
927
928 default:
929 DC_LOG_WARNING("%s: Invalid LB pixel depth",
930 __func__);
931 BREAK_TO_DEBUGGER();
932 break;
933 }
934
935 ASSERT(pixels_per_entries);
936
937 max_pixels_supports =
938 pixels_per_entries *
939 xfm_dce->lb_memory_size;
940
941 return (max_pixels_supports / pixel_width);
942}
943
944static void set_denormalization(
945 struct dce_transform *xfm_dce,
946 enum dc_color_depth depth)
947{
948 int denorm_mode = 0;
949
950 switch (depth) {
951 case COLOR_DEPTH_666:
952 /* 63/64 for 6 bit output color depth */
953 denorm_mode = 1;
954 break;
955 case COLOR_DEPTH_888:
956 /* Unity for 8 bit output color depth
957 * because prescale is disabled by default */
958 denorm_mode = 0;
959 break;
960 case COLOR_DEPTH_101010:
961 /* 1023/1024 for 10 bit output color depth */
962 denorm_mode = 3;
963 break;
964 case COLOR_DEPTH_121212:
965 /* 4095/4096 for 12 bit output color depth */
966 denorm_mode = 5;
967 break;
968 case COLOR_DEPTH_141414:
969 case COLOR_DEPTH_161616:
970 default:
971 /* not valid used case! */
972 break;
973 }
974
975 REG_SET(DENORM_CONTROL, 0, DENORM_MODE, denorm_mode);
976}
977
978static void dce_transform_set_pixel_storage_depth(
979 struct transform *xfm,
980 enum lb_pixel_depth depth,
981 const struct bit_depth_reduction_params *bit_depth_params)
982{
983 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
984 int pixel_depth, expan_mode;
985 enum dc_color_depth color_depth;
986
987 switch (depth) {
988 case LB_PIXEL_DEPTH_18BPP:
989 color_depth = COLOR_DEPTH_666;
990 pixel_depth = 2;
991 expan_mode = 1;
992 break;
993 case LB_PIXEL_DEPTH_24BPP:
994 color_depth = COLOR_DEPTH_888;
995 pixel_depth = 1;
996 expan_mode = 1;
997 break;
998 case LB_PIXEL_DEPTH_30BPP:
999 color_depth = COLOR_DEPTH_101010;
1000 pixel_depth = 0;
1001 expan_mode = 1;
1002 break;
1003 case LB_PIXEL_DEPTH_36BPP:
1004 color_depth = COLOR_DEPTH_121212;
1005 pixel_depth = 3;
1006 expan_mode = 0;
1007 break;
1008 default:
1009 color_depth = COLOR_DEPTH_101010;
1010 pixel_depth = 0;
1011 expan_mode = 1;
1012 DC_LOG_DC("The pixel depth %d is not valid, set COLOR_DEPTH_101010 instead.", depth);
1013 break;
1014 }
1015
1016 set_denormalization(xfm_dce, depth: color_depth);
1017 program_bit_depth_reduction(xfm_dce, depth: color_depth, bit_depth_params);
1018
1019 REG_UPDATE_2(LB_DATA_FORMAT,
1020 PIXEL_DEPTH, pixel_depth,
1021 PIXEL_EXPAN_MODE, expan_mode);
1022
1023 if (!(xfm_dce->lb_pixel_depth_supported & depth)) {
1024 /*we should use unsupported capabilities
1025 * unless it is required by w/a*/
1026 DC_LOG_DC("%s: Capability not supported", __func__);
1027 }
1028}
1029
1030#if defined(CONFIG_DRM_AMD_DC_SI)
1031static void dce60_transform_set_pixel_storage_depth(
1032 struct transform *xfm,
1033 enum lb_pixel_depth depth,
1034 const struct bit_depth_reduction_params *bit_depth_params)
1035{
1036 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
1037 enum dc_color_depth color_depth;
1038
1039 switch (depth) {
1040 case LB_PIXEL_DEPTH_18BPP:
1041 color_depth = COLOR_DEPTH_666;
1042 break;
1043 case LB_PIXEL_DEPTH_24BPP:
1044 color_depth = COLOR_DEPTH_888;
1045 break;
1046 case LB_PIXEL_DEPTH_30BPP:
1047 color_depth = COLOR_DEPTH_101010;
1048 break;
1049 case LB_PIXEL_DEPTH_36BPP:
1050 color_depth = COLOR_DEPTH_121212;
1051 break;
1052 default:
1053 color_depth = COLOR_DEPTH_101010;
1054 BREAK_TO_DEBUGGER();
1055 break;
1056 }
1057
1058 set_denormalization(xfm_dce, depth: color_depth);
1059 dce60_program_bit_depth_reduction(xfm_dce, depth: color_depth, bit_depth_params);
1060
1061 /* DATA_FORMAT in DCE6 does not have PIXEL_DEPTH and PIXEL_EXPAN_MODE masks */
1062
1063 if (!(xfm_dce->lb_pixel_depth_supported & depth)) {
1064 /*we should use unsupported capabilities
1065 * unless it is required by w/a*/
1066 DC_LOG_WARNING("%s: Capability not supported",
1067 __func__);
1068 }
1069}
1070#endif
1071
1072static void program_gamut_remap(
1073 struct dce_transform *xfm_dce,
1074 const uint16_t *reg_val)
1075{
1076 if (reg_val) {
1077 REG_SET_2(GAMUT_REMAP_C11_C12, 0,
1078 GAMUT_REMAP_C11, reg_val[0],
1079 GAMUT_REMAP_C12, reg_val[1]);
1080 REG_SET_2(GAMUT_REMAP_C13_C14, 0,
1081 GAMUT_REMAP_C13, reg_val[2],
1082 GAMUT_REMAP_C14, reg_val[3]);
1083 REG_SET_2(GAMUT_REMAP_C21_C22, 0,
1084 GAMUT_REMAP_C21, reg_val[4],
1085 GAMUT_REMAP_C22, reg_val[5]);
1086 REG_SET_2(GAMUT_REMAP_C23_C24, 0,
1087 GAMUT_REMAP_C23, reg_val[6],
1088 GAMUT_REMAP_C24, reg_val[7]);
1089 REG_SET_2(GAMUT_REMAP_C31_C32, 0,
1090 GAMUT_REMAP_C31, reg_val[8],
1091 GAMUT_REMAP_C32, reg_val[9]);
1092 REG_SET_2(GAMUT_REMAP_C33_C34, 0,
1093 GAMUT_REMAP_C33, reg_val[10],
1094 GAMUT_REMAP_C34, reg_val[11]);
1095
1096 REG_SET(GAMUT_REMAP_CONTROL, 0, GRPH_GAMUT_REMAP_MODE, 1);
1097 } else
1098 REG_SET(GAMUT_REMAP_CONTROL, 0, GRPH_GAMUT_REMAP_MODE, 0);
1099
1100}
1101
1102/*
1103 *****************************************************************************
1104 * Function: dal_transform_wide_gamut_set_gamut_remap
1105 *
1106 * @param [in] const struct xfm_grph_csc_adjustment *adjust
1107 *
1108 * @return
1109 * void
1110 *
1111 * @note calculate and apply color temperature adjustment to in Rgb color space
1112 *
1113 * @see
1114 *
1115 *****************************************************************************
1116 */
1117static void dce_transform_set_gamut_remap(
1118 struct transform *xfm,
1119 const struct xfm_grph_csc_adjustment *adjust)
1120{
1121 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
1122 int i = 0;
1123
1124 if (adjust->gamut_adjust_type != GRAPHICS_GAMUT_ADJUST_TYPE_SW)
1125 /* Bypass if type is bypass or hw */
1126 program_gamut_remap(xfm_dce, NULL);
1127 else {
1128 struct fixed31_32 arr_matrix[GAMUT_MATRIX_SIZE];
1129 uint16_t arr_reg_val[GAMUT_MATRIX_SIZE];
1130
1131 for (i = 0; i < GAMUT_MATRIX_SIZE; i++)
1132 arr_matrix[i] = adjust->temperature_matrix[i];
1133
1134 convert_float_matrix(
1135 matrix: arr_reg_val, flt: arr_matrix, GAMUT_MATRIX_SIZE);
1136
1137 program_gamut_remap(xfm_dce, reg_val: arr_reg_val);
1138 }
1139}
1140
1141static uint32_t decide_taps(struct fixed31_32 ratio, uint32_t in_taps, bool chroma)
1142{
1143 uint32_t taps;
1144
1145 if (IDENTITY_RATIO(ratio)) {
1146 return 1;
1147 } else if (in_taps != 0) {
1148 taps = in_taps;
1149 } else {
1150 taps = 4;
1151 }
1152
1153 if (chroma) {
1154 taps /= 2;
1155 if (taps < 2)
1156 taps = 2;
1157 }
1158
1159 return taps;
1160}
1161
1162
1163bool dce_transform_get_optimal_number_of_taps(
1164 struct transform *xfm,
1165 struct scaler_data *scl_data,
1166 const struct scaling_taps *in_taps)
1167{
1168 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
1169 int pixel_width = scl_data->viewport.width;
1170 int max_num_of_lines;
1171
1172 if (xfm_dce->prescaler_on &&
1173 (scl_data->viewport.width > scl_data->recout.width))
1174 pixel_width = scl_data->recout.width;
1175
1176 max_num_of_lines = dce_transform_get_max_num_of_supported_lines(
1177 xfm_dce,
1178 depth: scl_data->lb_params.depth,
1179 pixel_width);
1180
1181 /* Fail if in_taps are impossible */
1182 if (in_taps->v_taps >= max_num_of_lines)
1183 return false;
1184
1185 /*
1186 * Set taps according to this policy (in this order)
1187 * - Use 1 for no scaling
1188 * - Use input taps
1189 * - Use 4 and reduce as required by line buffer size
1190 * - Decide chroma taps if chroma is scaled
1191 *
1192 * Ignore input chroma taps. Decide based on non-chroma
1193 */
1194 scl_data->taps.h_taps = decide_taps(ratio: scl_data->ratios.horz, in_taps: in_taps->h_taps, chroma: false);
1195 scl_data->taps.v_taps = decide_taps(ratio: scl_data->ratios.vert, in_taps: in_taps->v_taps, chroma: false);
1196 scl_data->taps.h_taps_c = decide_taps(ratio: scl_data->ratios.horz_c, in_taps: in_taps->h_taps, chroma: true);
1197 scl_data->taps.v_taps_c = decide_taps(ratio: scl_data->ratios.vert_c, in_taps: in_taps->v_taps, chroma: true);
1198
1199 if (!IDENTITY_RATIO(scl_data->ratios.vert)) {
1200 /* reduce v_taps if needed but ensure we have at least two */
1201 if (in_taps->v_taps == 0
1202 && max_num_of_lines <= scl_data->taps.v_taps
1203 && scl_data->taps.v_taps > 1) {
1204 scl_data->taps.v_taps = max_num_of_lines - 1;
1205 }
1206
1207 if (scl_data->taps.v_taps <= 1)
1208 return false;
1209 }
1210
1211 if (!IDENTITY_RATIO(scl_data->ratios.vert_c)) {
1212 /* reduce chroma v_taps if needed but ensure we have at least two */
1213 if (max_num_of_lines <= scl_data->taps.v_taps_c && scl_data->taps.v_taps_c > 1) {
1214 scl_data->taps.v_taps_c = max_num_of_lines - 1;
1215 }
1216
1217 if (scl_data->taps.v_taps_c <= 1)
1218 return false;
1219 }
1220
1221 /* we've got valid taps */
1222 return true;
1223}
1224
1225static void dce_transform_reset(struct transform *xfm)
1226{
1227 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
1228
1229 xfm_dce->filter_h = NULL;
1230 xfm_dce->filter_v = NULL;
1231}
1232
1233static void program_color_matrix(
1234 struct dce_transform *xfm_dce,
1235 const struct out_csc_color_matrix *tbl_entry,
1236 enum grph_color_adjust_option options)
1237{
1238 {
1239 REG_SET_2(OUTPUT_CSC_C11_C12, 0,
1240 OUTPUT_CSC_C11, tbl_entry->regval[0],
1241 OUTPUT_CSC_C12, tbl_entry->regval[1]);
1242 }
1243 {
1244 REG_SET_2(OUTPUT_CSC_C13_C14, 0,
1245 OUTPUT_CSC_C11, tbl_entry->regval[2],
1246 OUTPUT_CSC_C12, tbl_entry->regval[3]);
1247 }
1248 {
1249 REG_SET_2(OUTPUT_CSC_C21_C22, 0,
1250 OUTPUT_CSC_C11, tbl_entry->regval[4],
1251 OUTPUT_CSC_C12, tbl_entry->regval[5]);
1252 }
1253 {
1254 REG_SET_2(OUTPUT_CSC_C23_C24, 0,
1255 OUTPUT_CSC_C11, tbl_entry->regval[6],
1256 OUTPUT_CSC_C12, tbl_entry->regval[7]);
1257 }
1258 {
1259 REG_SET_2(OUTPUT_CSC_C31_C32, 0,
1260 OUTPUT_CSC_C11, tbl_entry->regval[8],
1261 OUTPUT_CSC_C12, tbl_entry->regval[9]);
1262 }
1263 {
1264 REG_SET_2(OUTPUT_CSC_C33_C34, 0,
1265 OUTPUT_CSC_C11, tbl_entry->regval[10],
1266 OUTPUT_CSC_C12, tbl_entry->regval[11]);
1267 }
1268}
1269
1270static bool configure_graphics_mode(
1271 struct dce_transform *xfm_dce,
1272 enum csc_color_mode config,
1273 enum graphics_csc_adjust_type csc_adjust_type,
1274 enum dc_color_space color_space)
1275{
1276 REG_SET(OUTPUT_CSC_CONTROL, 0,
1277 OUTPUT_CSC_GRPH_MODE, 0);
1278
1279 if (csc_adjust_type == GRAPHICS_CSC_ADJUST_TYPE_SW) {
1280 if (config == CSC_COLOR_MODE_GRAPHICS_OUTPUT_CSC) {
1281 REG_SET(OUTPUT_CSC_CONTROL, 0,
1282 OUTPUT_CSC_GRPH_MODE, 4);
1283 } else {
1284
1285 switch (color_space) {
1286 case COLOR_SPACE_SRGB:
1287 /* by pass */
1288 REG_SET(OUTPUT_CSC_CONTROL, 0,
1289 OUTPUT_CSC_GRPH_MODE, 0);
1290 break;
1291 case COLOR_SPACE_SRGB_LIMITED:
1292 /* TV RGB */
1293 REG_SET(OUTPUT_CSC_CONTROL, 0,
1294 OUTPUT_CSC_GRPH_MODE, 1);
1295 break;
1296 case COLOR_SPACE_YCBCR601:
1297 case COLOR_SPACE_YCBCR601_LIMITED:
1298 /* YCbCr601 */
1299 REG_SET(OUTPUT_CSC_CONTROL, 0,
1300 OUTPUT_CSC_GRPH_MODE, 2);
1301 break;
1302 case COLOR_SPACE_YCBCR709:
1303 case COLOR_SPACE_YCBCR709_LIMITED:
1304 /* YCbCr709 */
1305 REG_SET(OUTPUT_CSC_CONTROL, 0,
1306 OUTPUT_CSC_GRPH_MODE, 3);
1307 break;
1308 default:
1309 return false;
1310 }
1311 }
1312 } else if (csc_adjust_type == GRAPHICS_CSC_ADJUST_TYPE_HW) {
1313 switch (color_space) {
1314 case COLOR_SPACE_SRGB:
1315 /* by pass */
1316 REG_SET(OUTPUT_CSC_CONTROL, 0,
1317 OUTPUT_CSC_GRPH_MODE, 0);
1318 break;
1319 case COLOR_SPACE_SRGB_LIMITED:
1320 /* TV RGB */
1321 REG_SET(OUTPUT_CSC_CONTROL, 0,
1322 OUTPUT_CSC_GRPH_MODE, 1);
1323 break;
1324 case COLOR_SPACE_YCBCR601:
1325 case COLOR_SPACE_YCBCR601_LIMITED:
1326 /* YCbCr601 */
1327 REG_SET(OUTPUT_CSC_CONTROL, 0,
1328 OUTPUT_CSC_GRPH_MODE, 2);
1329 break;
1330 case COLOR_SPACE_YCBCR709:
1331 case COLOR_SPACE_YCBCR709_LIMITED:
1332 /* YCbCr709 */
1333 REG_SET(OUTPUT_CSC_CONTROL, 0,
1334 OUTPUT_CSC_GRPH_MODE, 3);
1335 break;
1336 default:
1337 return false;
1338 }
1339
1340 } else
1341 /* by pass */
1342 REG_SET(OUTPUT_CSC_CONTROL, 0,
1343 OUTPUT_CSC_GRPH_MODE, 0);
1344
1345 return true;
1346}
1347
1348void dce110_opp_set_csc_adjustment(
1349 struct transform *xfm,
1350 const struct out_csc_color_matrix *tbl_entry)
1351{
1352 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
1353 enum csc_color_mode config =
1354 CSC_COLOR_MODE_GRAPHICS_OUTPUT_CSC;
1355
1356 program_color_matrix(
1357 xfm_dce, tbl_entry, options: GRPH_COLOR_MATRIX_SW);
1358
1359 /* We did everything ,now program DxOUTPUT_CSC_CONTROL */
1360 configure_graphics_mode(xfm_dce, config, csc_adjust_type: GRAPHICS_CSC_ADJUST_TYPE_SW,
1361 color_space: tbl_entry->color_space);
1362}
1363
1364void dce110_opp_set_csc_default(
1365 struct transform *xfm,
1366 const struct default_adjustment *default_adjust)
1367{
1368 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
1369 enum csc_color_mode config =
1370 CSC_COLOR_MODE_GRAPHICS_PREDEFINED;
1371
1372 if (default_adjust->force_hw_default == false) {
1373 const struct out_csc_color_matrix *elm;
1374 /* currently parameter not in use */
1375 enum grph_color_adjust_option option =
1376 GRPH_COLOR_MATRIX_HW_DEFAULT;
1377 uint32_t i;
1378 /*
1379 * HW default false we program locally defined matrix
1380 * HW default true we use predefined hw matrix and we
1381 * do not need to program matrix
1382 * OEM wants the HW default via runtime parameter.
1383 */
1384 option = GRPH_COLOR_MATRIX_SW;
1385
1386 for (i = 0; i < ARRAY_SIZE(global_color_matrix); ++i) {
1387 elm = &global_color_matrix[i];
1388 if (elm->color_space != default_adjust->out_color_space)
1389 continue;
1390 /* program the matrix with default values from this
1391 * file */
1392 program_color_matrix(xfm_dce, tbl_entry: elm, options: option);
1393 config = CSC_COLOR_MODE_GRAPHICS_OUTPUT_CSC;
1394 break;
1395 }
1396 }
1397
1398 /* configure the what we programmed :
1399 * 1. Default values from this file
1400 * 2. Use hardware default from ROM_A and we do not need to program
1401 * matrix */
1402
1403 configure_graphics_mode(xfm_dce, config,
1404 csc_adjust_type: default_adjust->csc_adjust_type,
1405 color_space: default_adjust->out_color_space);
1406}
1407
1408static void program_pwl(struct dce_transform *xfm_dce,
1409 const struct pwl_params *params)
1410{
1411 int retval;
1412 uint8_t max_tries = 10;
1413 uint8_t counter = 0;
1414 uint32_t i = 0;
1415 const struct pwl_result_data *rgb = params->rgb_resulted;
1416
1417 /* Power on LUT memory */
1418 if (REG(DCFE_MEM_PWR_CTRL))
1419 REG_UPDATE(DCFE_MEM_PWR_CTRL,
1420 DCP_REGAMMA_MEM_PWR_DIS, 1);
1421 else
1422 REG_UPDATE(DCFE_MEM_LIGHT_SLEEP_CNTL,
1423 REGAMMA_LUT_LIGHT_SLEEP_DIS, 1);
1424
1425 while (counter < max_tries) {
1426 if (REG(DCFE_MEM_PWR_STATUS)) {
1427 REG_GET(DCFE_MEM_PWR_STATUS,
1428 DCP_REGAMMA_MEM_PWR_STATE,
1429 &retval);
1430
1431 if (retval == 0)
1432 break;
1433 ++counter;
1434 } else {
1435 REG_GET(DCFE_MEM_LIGHT_SLEEP_CNTL,
1436 REGAMMA_LUT_MEM_PWR_STATE,
1437 &retval);
1438
1439 if (retval == 0)
1440 break;
1441 ++counter;
1442 }
1443 }
1444
1445 if (counter == max_tries) {
1446 DC_LOG_WARNING("%s: regamma lut was not powered on "
1447 "in a timely manner,"
1448 " programming still proceeds\n",
1449 __func__);
1450 }
1451
1452 REG_UPDATE(REGAMMA_LUT_WRITE_EN_MASK,
1453 REGAMMA_LUT_WRITE_EN_MASK, 7);
1454
1455 REG_WRITE(REGAMMA_LUT_INDEX, 0);
1456
1457 /* Program REGAMMA_LUT_DATA */
1458 while (i != params->hw_points_num) {
1459
1460 REG_WRITE(REGAMMA_LUT_DATA, rgb->red_reg);
1461 REG_WRITE(REGAMMA_LUT_DATA, rgb->green_reg);
1462 REG_WRITE(REGAMMA_LUT_DATA, rgb->blue_reg);
1463 REG_WRITE(REGAMMA_LUT_DATA, rgb->delta_red_reg);
1464 REG_WRITE(REGAMMA_LUT_DATA, rgb->delta_green_reg);
1465 REG_WRITE(REGAMMA_LUT_DATA, rgb->delta_blue_reg);
1466
1467 ++rgb;
1468 ++i;
1469 }
1470
1471 /* we are done with DCP LUT memory; re-enable low power mode */
1472 if (REG(DCFE_MEM_PWR_CTRL))
1473 REG_UPDATE(DCFE_MEM_PWR_CTRL,
1474 DCP_REGAMMA_MEM_PWR_DIS, 0);
1475 else
1476 REG_UPDATE(DCFE_MEM_LIGHT_SLEEP_CNTL,
1477 REGAMMA_LUT_LIGHT_SLEEP_DIS, 0);
1478}
1479
1480static void regamma_config_regions_and_segments(struct dce_transform *xfm_dce,
1481 const struct pwl_params *params)
1482{
1483 const struct gamma_curve *curve;
1484
1485 REG_SET_2(REGAMMA_CNTLA_START_CNTL, 0,
1486 REGAMMA_CNTLA_EXP_REGION_START, params->arr_points[0].custom_float_x,
1487 REGAMMA_CNTLA_EXP_REGION_START_SEGMENT, 0);
1488
1489 REG_SET(REGAMMA_CNTLA_SLOPE_CNTL, 0,
1490 REGAMMA_CNTLA_EXP_REGION_LINEAR_SLOPE, params->arr_points[0].custom_float_slope);
1491
1492 REG_SET(REGAMMA_CNTLA_END_CNTL1, 0,
1493 REGAMMA_CNTLA_EXP_REGION_END, params->arr_points[1].custom_float_x);
1494
1495 REG_SET_2(REGAMMA_CNTLA_END_CNTL2, 0,
1496 REGAMMA_CNTLA_EXP_REGION_END_BASE, params->arr_points[1].custom_float_y,
1497 REGAMMA_CNTLA_EXP_REGION_END_SLOPE, params->arr_points[1].custom_float_slope);
1498
1499 curve = params->arr_curve_points;
1500
1501 REG_SET_4(REGAMMA_CNTLA_REGION_0_1, 0,
1502 REGAMMA_CNTLA_EXP_REGION0_LUT_OFFSET, curve[0].offset,
1503 REGAMMA_CNTLA_EXP_REGION0_NUM_SEGMENTS, curve[0].segments_num,
1504 REGAMMA_CNTLA_EXP_REGION1_LUT_OFFSET, curve[1].offset,
1505 REGAMMA_CNTLA_EXP_REGION1_NUM_SEGMENTS, curve[1].segments_num);
1506 curve += 2;
1507
1508 REG_SET_4(REGAMMA_CNTLA_REGION_2_3, 0,
1509 REGAMMA_CNTLA_EXP_REGION0_LUT_OFFSET, curve[0].offset,
1510 REGAMMA_CNTLA_EXP_REGION0_NUM_SEGMENTS, curve[0].segments_num,
1511 REGAMMA_CNTLA_EXP_REGION1_LUT_OFFSET, curve[1].offset,
1512 REGAMMA_CNTLA_EXP_REGION1_NUM_SEGMENTS, curve[1].segments_num);
1513 curve += 2;
1514
1515 REG_SET_4(REGAMMA_CNTLA_REGION_4_5, 0,
1516 REGAMMA_CNTLA_EXP_REGION0_LUT_OFFSET, curve[0].offset,
1517 REGAMMA_CNTLA_EXP_REGION0_NUM_SEGMENTS, curve[0].segments_num,
1518 REGAMMA_CNTLA_EXP_REGION1_LUT_OFFSET, curve[1].offset,
1519 REGAMMA_CNTLA_EXP_REGION1_NUM_SEGMENTS, curve[1].segments_num);
1520 curve += 2;
1521
1522 REG_SET_4(REGAMMA_CNTLA_REGION_6_7, 0,
1523 REGAMMA_CNTLA_EXP_REGION0_LUT_OFFSET, curve[0].offset,
1524 REGAMMA_CNTLA_EXP_REGION0_NUM_SEGMENTS, curve[0].segments_num,
1525 REGAMMA_CNTLA_EXP_REGION1_LUT_OFFSET, curve[1].offset,
1526 REGAMMA_CNTLA_EXP_REGION1_NUM_SEGMENTS, curve[1].segments_num);
1527 curve += 2;
1528
1529 REG_SET_4(REGAMMA_CNTLA_REGION_8_9, 0,
1530 REGAMMA_CNTLA_EXP_REGION0_LUT_OFFSET, curve[0].offset,
1531 REGAMMA_CNTLA_EXP_REGION0_NUM_SEGMENTS, curve[0].segments_num,
1532 REGAMMA_CNTLA_EXP_REGION1_LUT_OFFSET, curve[1].offset,
1533 REGAMMA_CNTLA_EXP_REGION1_NUM_SEGMENTS, curve[1].segments_num);
1534 curve += 2;
1535
1536 REG_SET_4(REGAMMA_CNTLA_REGION_10_11, 0,
1537 REGAMMA_CNTLA_EXP_REGION0_LUT_OFFSET, curve[0].offset,
1538 REGAMMA_CNTLA_EXP_REGION0_NUM_SEGMENTS, curve[0].segments_num,
1539 REGAMMA_CNTLA_EXP_REGION1_LUT_OFFSET, curve[1].offset,
1540 REGAMMA_CNTLA_EXP_REGION1_NUM_SEGMENTS, curve[1].segments_num);
1541 curve += 2;
1542
1543 REG_SET_4(REGAMMA_CNTLA_REGION_12_13, 0,
1544 REGAMMA_CNTLA_EXP_REGION0_LUT_OFFSET, curve[0].offset,
1545 REGAMMA_CNTLA_EXP_REGION0_NUM_SEGMENTS, curve[0].segments_num,
1546 REGAMMA_CNTLA_EXP_REGION1_LUT_OFFSET, curve[1].offset,
1547 REGAMMA_CNTLA_EXP_REGION1_NUM_SEGMENTS, curve[1].segments_num);
1548 curve += 2;
1549
1550 REG_SET_4(REGAMMA_CNTLA_REGION_14_15, 0,
1551 REGAMMA_CNTLA_EXP_REGION0_LUT_OFFSET, curve[0].offset,
1552 REGAMMA_CNTLA_EXP_REGION0_NUM_SEGMENTS, curve[0].segments_num,
1553 REGAMMA_CNTLA_EXP_REGION1_LUT_OFFSET, curve[1].offset,
1554 REGAMMA_CNTLA_EXP_REGION1_NUM_SEGMENTS, curve[1].segments_num);
1555}
1556
1557
1558
1559void dce110_opp_program_regamma_pwl(struct transform *xfm,
1560 const struct pwl_params *params)
1561{
1562 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
1563
1564 /* Setup regions */
1565 regamma_config_regions_and_segments(xfm_dce, params);
1566
1567 /* Program PWL */
1568 program_pwl(xfm_dce, params);
1569}
1570
1571void dce110_opp_power_on_regamma_lut(struct transform *xfm,
1572 bool power_on)
1573{
1574 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
1575
1576 if (REG(DCFE_MEM_PWR_CTRL))
1577 REG_UPDATE_2(DCFE_MEM_PWR_CTRL,
1578 DCP_REGAMMA_MEM_PWR_DIS, power_on,
1579 DCP_LUT_MEM_PWR_DIS, power_on);
1580 else
1581 REG_UPDATE_2(DCFE_MEM_LIGHT_SLEEP_CNTL,
1582 REGAMMA_LUT_LIGHT_SLEEP_DIS, power_on,
1583 DCP_LUT_LIGHT_SLEEP_DIS, power_on);
1584
1585}
1586
1587void dce110_opp_set_regamma_mode(struct transform *xfm,
1588 enum opp_regamma mode)
1589{
1590 struct dce_transform *xfm_dce = TO_DCE_TRANSFORM(xfm);
1591
1592 REG_SET(REGAMMA_CONTROL, 0,
1593 GRPH_REGAMMA_MODE, mode);
1594}
1595
1596static const struct transform_funcs dce_transform_funcs = {
1597 .transform_reset = dce_transform_reset,
1598 .transform_set_scaler = dce_transform_set_scaler,
1599 .transform_set_gamut_remap = dce_transform_set_gamut_remap,
1600 .opp_set_csc_adjustment = dce110_opp_set_csc_adjustment,
1601 .opp_set_csc_default = dce110_opp_set_csc_default,
1602 .opp_power_on_regamma_lut = dce110_opp_power_on_regamma_lut,
1603 .opp_program_regamma_pwl = dce110_opp_program_regamma_pwl,
1604 .opp_set_regamma_mode = dce110_opp_set_regamma_mode,
1605 .transform_set_pixel_storage_depth = dce_transform_set_pixel_storage_depth,
1606 .transform_get_optimal_number_of_taps = dce_transform_get_optimal_number_of_taps
1607};
1608
1609#if defined(CONFIG_DRM_AMD_DC_SI)
1610static const struct transform_funcs dce60_transform_funcs = {
1611 .transform_reset = dce_transform_reset,
1612 .transform_set_scaler = dce60_transform_set_scaler,
1613 .transform_set_gamut_remap = dce_transform_set_gamut_remap,
1614 .opp_set_csc_adjustment = dce110_opp_set_csc_adjustment,
1615 .opp_set_csc_default = dce110_opp_set_csc_default,
1616 .opp_power_on_regamma_lut = dce110_opp_power_on_regamma_lut,
1617 .opp_program_regamma_pwl = dce110_opp_program_regamma_pwl,
1618 .opp_set_regamma_mode = dce110_opp_set_regamma_mode,
1619 .transform_set_pixel_storage_depth = dce60_transform_set_pixel_storage_depth,
1620 .transform_get_optimal_number_of_taps = dce_transform_get_optimal_number_of_taps
1621};
1622#endif
1623
1624/*****************************************/
1625/* Constructor, Destructor */
1626/*****************************************/
1627
1628void dce_transform_construct(
1629 struct dce_transform *xfm_dce,
1630 struct dc_context *ctx,
1631 uint32_t inst,
1632 const struct dce_transform_registers *regs,
1633 const struct dce_transform_shift *xfm_shift,
1634 const struct dce_transform_mask *xfm_mask)
1635{
1636 xfm_dce->base.ctx = ctx;
1637
1638 xfm_dce->base.inst = inst;
1639 xfm_dce->base.funcs = &dce_transform_funcs;
1640
1641 xfm_dce->regs = regs;
1642 xfm_dce->xfm_shift = xfm_shift;
1643 xfm_dce->xfm_mask = xfm_mask;
1644
1645 xfm_dce->prescaler_on = true;
1646 xfm_dce->lb_pixel_depth_supported =
1647 LB_PIXEL_DEPTH_18BPP |
1648 LB_PIXEL_DEPTH_24BPP |
1649 LB_PIXEL_DEPTH_30BPP |
1650 LB_PIXEL_DEPTH_36BPP;
1651
1652 xfm_dce->lb_bits_per_entry = LB_BITS_PER_ENTRY;
1653 xfm_dce->lb_memory_size = LB_TOTAL_NUMBER_OF_ENTRIES; /*0x6B0*/
1654}
1655
1656#if defined(CONFIG_DRM_AMD_DC_SI)
1657void dce60_transform_construct(
1658 struct dce_transform *xfm_dce,
1659 struct dc_context *ctx,
1660 uint32_t inst,
1661 const struct dce_transform_registers *regs,
1662 const struct dce_transform_shift *xfm_shift,
1663 const struct dce_transform_mask *xfm_mask)
1664{
1665 xfm_dce->base.ctx = ctx;
1666
1667 xfm_dce->base.inst = inst;
1668 xfm_dce->base.funcs = &dce60_transform_funcs;
1669
1670 xfm_dce->regs = regs;
1671 xfm_dce->xfm_shift = xfm_shift;
1672 xfm_dce->xfm_mask = xfm_mask;
1673
1674 xfm_dce->prescaler_on = true;
1675 xfm_dce->lb_pixel_depth_supported =
1676 LB_PIXEL_DEPTH_18BPP |
1677 LB_PIXEL_DEPTH_24BPP |
1678 LB_PIXEL_DEPTH_30BPP |
1679 LB_PIXEL_DEPTH_36BPP;
1680
1681 xfm_dce->lb_bits_per_entry = LB_BITS_PER_ENTRY;
1682 xfm_dce->lb_memory_size = LB_TOTAL_NUMBER_OF_ENTRIES; /*0x6B0*/
1683}
1684#endif
1685

source code of linux/drivers/gpu/drm/amd/display/dc/dce/dce_transform.c