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1// SPDX-License-Identifier: MIT
2/*
3 * Copyright © 2018 Intel Corporation
4 *
5 * Author: Gaurav K Singh <gaurav.k.singh@intel.com>
6 * Manasi Navare <manasi.d.navare@intel.com>
7 */
8#include <linux/limits.h>
9
10#include <drm/display/drm_dsc_helper.h>
11#include <drm/drm_fixed.h>
12
13#include "i915_drv.h"
14#include "intel_crtc.h"
15#include "intel_de.h"
16#include "intel_display_types.h"
17#include "intel_dsi.h"
18#include "intel_qp_tables.h"
19#include "intel_vdsc.h"
20#include "intel_vdsc_regs.h"
21
22bool intel_dsc_source_support(const struct intel_crtc_state *crtc_state)
23{
24 const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
25 struct drm_i915_private *i915 = to_i915(crtc->base.dev);
26 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
27
28 if (!HAS_DSC(i915))
29 return false;
30
31 if (DISPLAY_VER(i915) == 11 && cpu_transcoder == TRANSCODER_A)
32 return false;
33
34 return true;
35}
36
37static bool is_pipe_dsc(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
38{
39 struct drm_i915_private *i915 = to_i915(crtc->base.dev);
40
41 if (DISPLAY_VER(i915) >= 12)
42 return true;
43
44 if (cpu_transcoder == TRANSCODER_EDP ||
45 cpu_transcoder == TRANSCODER_DSI_0 ||
46 cpu_transcoder == TRANSCODER_DSI_1)
47 return false;
48
49 /* There's no pipe A DSC engine on ICL */
50 drm_WARN_ON(&i915->drm, crtc->pipe == PIPE_A);
51
52 return true;
53}
54
55static void
56intel_vdsc_set_min_max_qp(struct drm_dsc_config *vdsc_cfg, int buf,
57 int bpp)
58{
59 int bpc = vdsc_cfg->bits_per_component;
60
61 /* Read range_minqp and range_max_qp from qp tables */
62 vdsc_cfg->rc_range_params[buf].range_min_qp =
63 intel_lookup_range_min_qp(bpc, buf, bpp, vdsc_cfg->native_420);
64 vdsc_cfg->rc_range_params[buf].range_max_qp =
65 intel_lookup_range_max_qp(bpc, buf, bpp, vdsc_cfg->native_420);
66}
67
68/*
69 * We are using the method provided in DSC 1.2a C-Model in codec_main.c
70 * Above method use a common formula to derive values for any combination of DSC
71 * variables. The formula approach may yield slight differences in the derived PPS
72 * parameters from the original parameter sets. These differences are not consequential
73 * to the coding performance because all parameter sets have been shown to produce
74 * visually lossless quality (provides the same PPS values as
75 * DSCParameterValuesVESA V1-2 spreadsheet).
76 */
77static void
78calculate_rc_params(struct drm_dsc_config *vdsc_cfg)
79{
80 int bpp = fxp_q4_to_int(vdsc_cfg->bits_per_pixel);
81 int bpc = vdsc_cfg->bits_per_component;
82 int qp_bpc_modifier = (bpc - 8) * 2;
83 int uncompressed_bpg_rate;
84 int first_line_bpg_offset;
85 u32 res, buf_i, bpp_i;
86
87 if (vdsc_cfg->slice_height >= 8)
88 first_line_bpg_offset =
89 12 + (9 * min(34, vdsc_cfg->slice_height - 8)) / 100;
90 else
91 first_line_bpg_offset = 2 * (vdsc_cfg->slice_height - 1);
92
93 uncompressed_bpg_rate = (3 * bpc + (vdsc_cfg->convert_rgb ? 0 : 2)) * 3;
94 vdsc_cfg->first_line_bpg_offset = clamp(first_line_bpg_offset, 0,
95 uncompressed_bpg_rate - 3 * bpp);
96
97 /*
98 * According to DSC 1.2 spec in Section 4.1 if native_420 is set:
99 * -second_line_bpg_offset is 12 in general and equal to 2*(slice_height-1) if slice
100 * height < 8.
101 * -second_line_offset_adj is 512 as shown by emperical values to yield best chroma
102 * preservation in second line.
103 * -nsl_bpg_offset is calculated as second_line_offset/slice_height -1 then rounded
104 * up to 16 fractional bits, we left shift second line offset by 11 to preserve 11
105 * fractional bits.
106 */
107 if (vdsc_cfg->native_420) {
108 if (vdsc_cfg->slice_height >= 8)
109 vdsc_cfg->second_line_bpg_offset = 12;
110 else
111 vdsc_cfg->second_line_bpg_offset =
112 2 * (vdsc_cfg->slice_height - 1);
113
114 vdsc_cfg->second_line_offset_adj = 512;
115 vdsc_cfg->nsl_bpg_offset = DIV_ROUND_UP(vdsc_cfg->second_line_bpg_offset << 11,
116 vdsc_cfg->slice_height - 1);
117 }
118
119 /* Our hw supports only 444 modes as of today */
120 if (bpp >= 12)
121 vdsc_cfg->initial_offset = 2048;
122 else if (bpp >= 10)
123 vdsc_cfg->initial_offset = 5632 - DIV_ROUND_UP(((bpp - 10) * 3584), 2);
124 else if (bpp >= 8)
125 vdsc_cfg->initial_offset = 6144 - DIV_ROUND_UP(((bpp - 8) * 512), 2);
126 else
127 vdsc_cfg->initial_offset = 6144;
128
129 /* initial_xmit_delay = rc_model_size/2/compression_bpp */
130 vdsc_cfg->initial_xmit_delay = DIV_ROUND_UP(DSC_RC_MODEL_SIZE_CONST, 2 * bpp);
131
132 vdsc_cfg->flatness_min_qp = 3 + qp_bpc_modifier;
133 vdsc_cfg->flatness_max_qp = 12 + qp_bpc_modifier;
134
135 vdsc_cfg->rc_quant_incr_limit0 = 11 + qp_bpc_modifier;
136 vdsc_cfg->rc_quant_incr_limit1 = 11 + qp_bpc_modifier;
137
138 if (vdsc_cfg->native_420) {
139 static const s8 ofs_und4[] = {
140 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12
141 };
142 static const s8 ofs_und5[] = {
143 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12
144 };
145 static const s8 ofs_und6[] = {
146 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12
147 };
148 static const s8 ofs_und8[] = {
149 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12
150 };
151 /*
152 * For 420 format since bits_per_pixel (bpp) is set to target bpp * 2,
153 * QP table values for target bpp 4.0 to 4.4375 (rounded to 4.0) are
154 * actually for bpp 8 to 8.875 (rounded to 4.0 * 2 i.e 8).
155 * Similarly values for target bpp 4.5 to 4.8375 (rounded to 4.5)
156 * are for bpp 9 to 9.875 (rounded to 4.5 * 2 i.e 9), and so on.
157 */
158 bpp_i = bpp - 8;
159 for (buf_i = 0; buf_i < DSC_NUM_BUF_RANGES; buf_i++) {
160 u8 range_bpg_offset;
161
162 intel_vdsc_set_min_max_qp(vdsc_cfg, buf_i, bpp_i);
163
164 /* Calculate range_bpg_offset */
165 if (bpp <= 8) {
166 range_bpg_offset = ofs_und4[buf_i];
167 } else if (bpp <= 10) {
168 res = DIV_ROUND_UP(((bpp - 8) *
169 (ofs_und5[buf_i] - ofs_und4[buf_i])), 2);
170 range_bpg_offset = ofs_und4[buf_i] + res;
171 } else if (bpp <= 12) {
172 res = DIV_ROUND_UP(((bpp - 10) *
173 (ofs_und6[buf_i] - ofs_und5[buf_i])), 2);
174 range_bpg_offset = ofs_und5[buf_i] + res;
175 } else if (bpp <= 16) {
176 res = DIV_ROUND_UP(((bpp - 12) *
177 (ofs_und8[buf_i] - ofs_und6[buf_i])), 4);
178 range_bpg_offset = ofs_und6[buf_i] + res;
179 } else {
180 range_bpg_offset = ofs_und8[buf_i];
181 }
182
183 vdsc_cfg->rc_range_params[buf_i].range_bpg_offset =
184 range_bpg_offset & DSC_RANGE_BPG_OFFSET_MASK;
185 }
186 } else {
187 /* fractional bpp part * 10000 (for precision up to 4 decimal places) */
188 int fractional_bits = fxp_q4_to_frac(vdsc_cfg->bits_per_pixel);
189
190 static const s8 ofs_und6[] = {
191 0, -2, -2, -4, -6, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12
192 };
193 static const s8 ofs_und8[] = {
194 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12
195 };
196 static const s8 ofs_und12[] = {
197 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12
198 };
199 static const s8 ofs_und15[] = {
200 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12
201 };
202
203 /*
204 * QP table rows have values in increment of 0.5.
205 * So 6.0 bpp to 6.4375 will have index 0, 6.5 to 6.9375 will have index 1,
206 * and so on.
207 * 0.5 fractional part with 4 decimal precision becomes 5000
208 */
209 bpp_i = ((bpp - 6) + (fractional_bits < 5000 ? 0 : 1));
210
211 for (buf_i = 0; buf_i < DSC_NUM_BUF_RANGES; buf_i++) {
212 u8 range_bpg_offset;
213
214 intel_vdsc_set_min_max_qp(vdsc_cfg, buf_i, bpp_i);
215
216 /* Calculate range_bpg_offset */
217 if (bpp <= 6) {
218 range_bpg_offset = ofs_und6[buf_i];
219 } else if (bpp <= 8) {
220 res = DIV_ROUND_UP(((bpp - 6) *
221 (ofs_und8[buf_i] - ofs_und6[buf_i])), 2);
222 range_bpg_offset = ofs_und6[buf_i] + res;
223 } else if (bpp <= 12) {
224 range_bpg_offset = ofs_und8[buf_i];
225 } else if (bpp <= 15) {
226 res = DIV_ROUND_UP(((bpp - 12) *
227 (ofs_und15[buf_i] - ofs_und12[buf_i])), 3);
228 range_bpg_offset = ofs_und12[buf_i] + res;
229 } else {
230 range_bpg_offset = ofs_und15[buf_i];
231 }
232
233 vdsc_cfg->rc_range_params[buf_i].range_bpg_offset =
234 range_bpg_offset & DSC_RANGE_BPG_OFFSET_MASK;
235 }
236 }
237}
238
239static int intel_dsc_slice_dimensions_valid(struct intel_crtc_state *pipe_config,
240 struct drm_dsc_config *vdsc_cfg)
241{
242 if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_RGB ||
243 pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) {
244 if (vdsc_cfg->slice_height > 4095)
245 return -EINVAL;
246 if (vdsc_cfg->slice_height * vdsc_cfg->slice_width < 15000)
247 return -EINVAL;
248 } else if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) {
249 if (vdsc_cfg->slice_width % 2)
250 return -EINVAL;
251 if (vdsc_cfg->slice_height % 2)
252 return -EINVAL;
253 if (vdsc_cfg->slice_height > 4094)
254 return -EINVAL;
255 if (vdsc_cfg->slice_height * vdsc_cfg->slice_width < 30000)
256 return -EINVAL;
257 }
258
259 return 0;
260}
261
262int intel_dsc_compute_params(struct intel_crtc_state *pipe_config)
263{
264 struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
265 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
266 struct drm_dsc_config *vdsc_cfg = &pipe_config->dsc.config;
267 u16 compressed_bpp = fxp_q4_to_int(pipe_config->dsc.compressed_bpp_x16);
268 int err;
269 int ret;
270
271 vdsc_cfg->pic_width = pipe_config->hw.adjusted_mode.crtc_hdisplay;
272 vdsc_cfg->slice_width = DIV_ROUND_UP(vdsc_cfg->pic_width,
273 pipe_config->dsc.slice_count);
274
275 err = intel_dsc_slice_dimensions_valid(pipe_config, vdsc_cfg);
276
277 if (err) {
278 drm_dbg_kms(&dev_priv->drm, "Slice dimension requirements not met\n");
279 return err;
280 }
281
282 /*
283 * According to DSC 1.2 specs if colorspace is YCbCr then convert_rgb is 0
284 * else 1
285 */
286 vdsc_cfg->convert_rgb = pipe_config->output_format != INTEL_OUTPUT_FORMAT_YCBCR420 &&
287 pipe_config->output_format != INTEL_OUTPUT_FORMAT_YCBCR444;
288
289 if (DISPLAY_VER(dev_priv) >= 14 &&
290 pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
291 vdsc_cfg->native_420 = true;
292 /* We do not support YcBCr422 as of now */
293 vdsc_cfg->native_422 = false;
294 vdsc_cfg->simple_422 = false;
295 /* Gen 11 does not support VBR */
296 vdsc_cfg->vbr_enable = false;
297
298 vdsc_cfg->bits_per_pixel = pipe_config->dsc.compressed_bpp_x16;
299
300 /*
301 * According to DSC 1.2 specs in Section 4.1 if native_420 is set
302 * we need to double the current bpp.
303 */
304 if (vdsc_cfg->native_420)
305 vdsc_cfg->bits_per_pixel <<= 1;
306
307 vdsc_cfg->bits_per_component = pipe_config->pipe_bpp / 3;
308
309 if (vdsc_cfg->bits_per_component < 8) {
310 drm_dbg_kms(&dev_priv->drm, "DSC bpc requirements not met bpc: %d\n",
311 vdsc_cfg->bits_per_component);
312 return -EINVAL;
313 }
314
315 drm_dsc_set_rc_buf_thresh(vdsc_cfg);
316
317 /*
318 * From XE_LPD onwards we supports compression bpps in steps of 1
319 * upto uncompressed bpp-1, hence add calculations for all the rc
320 * parameters
321 */
322 if (DISPLAY_VER(dev_priv) >= 13) {
323 calculate_rc_params(vdsc_cfg);
324 } else {
325 if ((compressed_bpp == 8 ||
326 compressed_bpp == 12) &&
327 (vdsc_cfg->bits_per_component == 8 ||
328 vdsc_cfg->bits_per_component == 10 ||
329 vdsc_cfg->bits_per_component == 12))
330 ret = drm_dsc_setup_rc_params(vdsc_cfg, DRM_DSC_1_1_PRE_SCR);
331 else
332 ret = drm_dsc_setup_rc_params(vdsc_cfg, DRM_DSC_1_2_444);
333
334 if (ret)
335 return ret;
336 }
337
338 /*
339 * BitsPerComponent value determines mux_word_size:
340 * When BitsPerComponent is less than or 10bpc, muxWordSize will be equal to
341 * 48 bits otherwise 64
342 */
343 if (vdsc_cfg->bits_per_component <= 10)
344 vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC;
345 else
346 vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC;
347
348 /* InitialScaleValue is a 6 bit value with 3 fractional bits (U3.3) */
349 vdsc_cfg->initial_scale_value = (vdsc_cfg->rc_model_size << 3) /
350 (vdsc_cfg->rc_model_size - vdsc_cfg->initial_offset);
351
352 return 0;
353}
354
355enum intel_display_power_domain
356intel_dsc_power_domain(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
357{
358 struct drm_i915_private *i915 = to_i915(crtc->base.dev);
359 enum pipe pipe = crtc->pipe;
360
361 /*
362 * VDSC/joining uses a separate power well, PW2, and requires
363 * POWER_DOMAIN_TRANSCODER_VDSC_PW2 power domain in two cases:
364 *
365 * - ICL eDP/DSI transcoder
366 * - Display version 12 (except RKL) pipe A
367 *
368 * For any other pipe, VDSC/joining uses the power well associated with
369 * the pipe in use. Hence another reference on the pipe power domain
370 * will suffice. (Except no VDSC/joining on ICL pipe A.)
371 */
372 if (DISPLAY_VER(i915) == 12 && !IS_ROCKETLAKE(i915) && pipe == PIPE_A)
373 return POWER_DOMAIN_TRANSCODER_VDSC_PW2;
374 else if (is_pipe_dsc(crtc, cpu_transcoder))
375 return POWER_DOMAIN_PIPE(pipe);
376 else
377 return POWER_DOMAIN_TRANSCODER_VDSC_PW2;
378}
379
380static int intel_dsc_get_vdsc_per_pipe(const struct intel_crtc_state *crtc_state)
381{
382 return crtc_state->dsc.dsc_split ? 2 : 1;
383}
384
385int intel_dsc_get_num_vdsc_instances(const struct intel_crtc_state *crtc_state)
386{
387 int num_vdsc_instances = intel_dsc_get_vdsc_per_pipe(crtc_state);
388 int num_joined_pipes = intel_crtc_num_joined_pipes(crtc_state);
389
390 num_vdsc_instances *= num_joined_pipes;
391
392 return num_vdsc_instances;
393}
394
395static void intel_dsc_get_pps_reg(const struct intel_crtc_state *crtc_state, int pps,
396 i915_reg_t *dsc_reg, int dsc_reg_num)
397{
398 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
399 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
400 enum pipe pipe = crtc->pipe;
401 bool pipe_dsc;
402
403 pipe_dsc = is_pipe_dsc(crtc, cpu_transcoder);
404
405 if (dsc_reg_num >= 3)
406 MISSING_CASE(dsc_reg_num);
407 if (dsc_reg_num >= 2)
408 dsc_reg[1] = pipe_dsc ? ICL_DSC1_PPS(pipe, pps) : DSCC_PPS(pps);
409 if (dsc_reg_num >= 1)
410 dsc_reg[0] = pipe_dsc ? ICL_DSC0_PPS(pipe, pps) : DSCA_PPS(pps);
411}
412
413static void intel_dsc_pps_write(const struct intel_crtc_state *crtc_state,
414 int pps, u32 pps_val)
415{
416 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
417 struct drm_i915_private *i915 = to_i915(crtc->base.dev);
418 i915_reg_t dsc_reg[2];
419 int i, vdsc_per_pipe, dsc_reg_num;
420
421 vdsc_per_pipe = intel_dsc_get_vdsc_per_pipe(crtc_state);
422 dsc_reg_num = min_t(int, ARRAY_SIZE(dsc_reg), vdsc_per_pipe);
423
424 drm_WARN_ON_ONCE(&i915->drm, dsc_reg_num < vdsc_per_pipe);
425
426 intel_dsc_get_pps_reg(crtc_state, pps, dsc_reg, dsc_reg_num);
427
428 for (i = 0; i < dsc_reg_num; i++)
429 intel_de_write(i915, dsc_reg[i], pps_val);
430}
431
432static void intel_dsc_pps_configure(const struct intel_crtc_state *crtc_state)
433{
434 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
435 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
436 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
437 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
438 enum pipe pipe = crtc->pipe;
439 u32 pps_val;
440 u32 rc_buf_thresh_dword[4];
441 u32 rc_range_params_dword[8];
442 int i = 0;
443 int num_vdsc_instances = intel_dsc_get_num_vdsc_instances(crtc_state);
444 int vdsc_instances_per_pipe = intel_dsc_get_vdsc_per_pipe(crtc_state);
445
446 /* PPS 0 */
447 pps_val = DSC_PPS0_VER_MAJOR(1) |
448 DSC_PPS0_VER_MINOR(vdsc_cfg->dsc_version_minor) |
449 DSC_PPS0_BPC(vdsc_cfg->bits_per_component) |
450 DSC_PPS0_LINE_BUF_DEPTH(vdsc_cfg->line_buf_depth);
451 if (vdsc_cfg->dsc_version_minor == 2) {
452 pps_val |= DSC_PPS0_ALT_ICH_SEL;
453 if (vdsc_cfg->native_420)
454 pps_val |= DSC_PPS0_NATIVE_420_ENABLE;
455 if (vdsc_cfg->native_422)
456 pps_val |= DSC_PPS0_NATIVE_422_ENABLE;
457 }
458 if (vdsc_cfg->block_pred_enable)
459 pps_val |= DSC_PPS0_BLOCK_PREDICTION;
460 if (vdsc_cfg->convert_rgb)
461 pps_val |= DSC_PPS0_COLOR_SPACE_CONVERSION;
462 if (vdsc_cfg->simple_422)
463 pps_val |= DSC_PPS0_422_ENABLE;
464 if (vdsc_cfg->vbr_enable)
465 pps_val |= DSC_PPS0_VBR_ENABLE;
466 intel_dsc_pps_write(crtc_state, 0, pps_val);
467
468 /* PPS 1 */
469 pps_val = DSC_PPS1_BPP(vdsc_cfg->bits_per_pixel);
470 intel_dsc_pps_write(crtc_state, 1, pps_val);
471
472 /* PPS 2 */
473 pps_val = DSC_PPS2_PIC_HEIGHT(vdsc_cfg->pic_height) |
474 DSC_PPS2_PIC_WIDTH(vdsc_cfg->pic_width / num_vdsc_instances);
475 intel_dsc_pps_write(crtc_state, 2, pps_val);
476
477 /* PPS 3 */
478 pps_val = DSC_PPS3_SLICE_HEIGHT(vdsc_cfg->slice_height) |
479 DSC_PPS3_SLICE_WIDTH(vdsc_cfg->slice_width);
480 intel_dsc_pps_write(crtc_state, 3, pps_val);
481
482 /* PPS 4 */
483 pps_val = DSC_PPS4_INITIAL_XMIT_DELAY(vdsc_cfg->initial_xmit_delay) |
484 DSC_PPS4_INITIAL_DEC_DELAY(vdsc_cfg->initial_dec_delay);
485 intel_dsc_pps_write(crtc_state, 4, pps_val);
486
487 /* PPS 5 */
488 pps_val = DSC_PPS5_SCALE_INC_INT(vdsc_cfg->scale_increment_interval) |
489 DSC_PPS5_SCALE_DEC_INT(vdsc_cfg->scale_decrement_interval);
490 intel_dsc_pps_write(crtc_state, 5, pps_val);
491
492 /* PPS 6 */
493 pps_val = DSC_PPS6_INITIAL_SCALE_VALUE(vdsc_cfg->initial_scale_value) |
494 DSC_PPS6_FIRST_LINE_BPG_OFFSET(vdsc_cfg->first_line_bpg_offset) |
495 DSC_PPS6_FLATNESS_MIN_QP(vdsc_cfg->flatness_min_qp) |
496 DSC_PPS6_FLATNESS_MAX_QP(vdsc_cfg->flatness_max_qp);
497 intel_dsc_pps_write(crtc_state, 6, pps_val);
498
499 /* PPS 7 */
500 pps_val = DSC_PPS7_SLICE_BPG_OFFSET(vdsc_cfg->slice_bpg_offset) |
501 DSC_PPS7_NFL_BPG_OFFSET(vdsc_cfg->nfl_bpg_offset);
502 intel_dsc_pps_write(crtc_state, 7, pps_val);
503
504 /* PPS 8 */
505 pps_val = DSC_PPS8_FINAL_OFFSET(vdsc_cfg->final_offset) |
506 DSC_PPS8_INITIAL_OFFSET(vdsc_cfg->initial_offset);
507 intel_dsc_pps_write(crtc_state, 8, pps_val);
508
509 /* PPS 9 */
510 pps_val = DSC_PPS9_RC_MODEL_SIZE(vdsc_cfg->rc_model_size) |
511 DSC_PPS9_RC_EDGE_FACTOR(DSC_RC_EDGE_FACTOR_CONST);
512 intel_dsc_pps_write(crtc_state, 9, pps_val);
513
514 /* PPS 10 */
515 pps_val = DSC_PPS10_RC_QUANT_INC_LIMIT0(vdsc_cfg->rc_quant_incr_limit0) |
516 DSC_PPS10_RC_QUANT_INC_LIMIT1(vdsc_cfg->rc_quant_incr_limit1) |
517 DSC_PPS10_RC_TARGET_OFF_HIGH(DSC_RC_TGT_OFFSET_HI_CONST) |
518 DSC_PPS10_RC_TARGET_OFF_LOW(DSC_RC_TGT_OFFSET_LO_CONST);
519 intel_dsc_pps_write(crtc_state, 10, pps_val);
520
521 /* PPS 16 */
522 pps_val = DSC_PPS16_SLICE_CHUNK_SIZE(vdsc_cfg->slice_chunk_size) |
523 DSC_PPS16_SLICE_PER_LINE((vdsc_cfg->pic_width / num_vdsc_instances) /
524 vdsc_cfg->slice_width) |
525 DSC_PPS16_SLICE_ROW_PER_FRAME(vdsc_cfg->pic_height /
526 vdsc_cfg->slice_height);
527 intel_dsc_pps_write(crtc_state, 16, pps_val);
528
529 if (DISPLAY_VER(dev_priv) >= 14) {
530 /* PPS 17 */
531 pps_val = DSC_PPS17_SL_BPG_OFFSET(vdsc_cfg->second_line_bpg_offset);
532 intel_dsc_pps_write(crtc_state, 17, pps_val);
533
534 /* PPS 18 */
535 pps_val = DSC_PPS18_NSL_BPG_OFFSET(vdsc_cfg->nsl_bpg_offset) |
536 DSC_PPS18_SL_OFFSET_ADJ(vdsc_cfg->second_line_offset_adj);
537 intel_dsc_pps_write(crtc_state, 18, pps_val);
538 }
539
540 /* Populate the RC_BUF_THRESH registers */
541 memset(rc_buf_thresh_dword, 0, sizeof(rc_buf_thresh_dword));
542 for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++)
543 rc_buf_thresh_dword[i / 4] |=
544 (u32)(vdsc_cfg->rc_buf_thresh[i] <<
545 BITS_PER_BYTE * (i % 4));
546 if (!is_pipe_dsc(crtc, cpu_transcoder)) {
547 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0,
548 rc_buf_thresh_dword[0]);
549 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0_UDW,
550 rc_buf_thresh_dword[1]);
551 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1,
552 rc_buf_thresh_dword[2]);
553 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1_UDW,
554 rc_buf_thresh_dword[3]);
555 if (vdsc_instances_per_pipe > 1) {
556 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0,
557 rc_buf_thresh_dword[0]);
558 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0_UDW,
559 rc_buf_thresh_dword[1]);
560 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1,
561 rc_buf_thresh_dword[2]);
562 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1_UDW,
563 rc_buf_thresh_dword[3]);
564 }
565 } else {
566 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0(pipe),
567 rc_buf_thresh_dword[0]);
568 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0_UDW(pipe),
569 rc_buf_thresh_dword[1]);
570 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1(pipe),
571 rc_buf_thresh_dword[2]);
572 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1_UDW(pipe),
573 rc_buf_thresh_dword[3]);
574 if (vdsc_instances_per_pipe > 1) {
575 intel_de_write(dev_priv,
576 ICL_DSC1_RC_BUF_THRESH_0(pipe),
577 rc_buf_thresh_dword[0]);
578 intel_de_write(dev_priv,
579 ICL_DSC1_RC_BUF_THRESH_0_UDW(pipe),
580 rc_buf_thresh_dword[1]);
581 intel_de_write(dev_priv,
582 ICL_DSC1_RC_BUF_THRESH_1(pipe),
583 rc_buf_thresh_dword[2]);
584 intel_de_write(dev_priv,
585 ICL_DSC1_RC_BUF_THRESH_1_UDW(pipe),
586 rc_buf_thresh_dword[3]);
587 }
588 }
589
590 /* Populate the RC_RANGE_PARAMETERS registers */
591 memset(rc_range_params_dword, 0, sizeof(rc_range_params_dword));
592 for (i = 0; i < DSC_NUM_BUF_RANGES; i++)
593 rc_range_params_dword[i / 2] |=
594 (u32)(((vdsc_cfg->rc_range_params[i].range_bpg_offset <<
595 RC_BPG_OFFSET_SHIFT) |
596 (vdsc_cfg->rc_range_params[i].range_max_qp <<
597 RC_MAX_QP_SHIFT) |
598 (vdsc_cfg->rc_range_params[i].range_min_qp <<
599 RC_MIN_QP_SHIFT)) << 16 * (i % 2));
600 if (!is_pipe_dsc(crtc, cpu_transcoder)) {
601 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0,
602 rc_range_params_dword[0]);
603 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0_UDW,
604 rc_range_params_dword[1]);
605 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1,
606 rc_range_params_dword[2]);
607 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1_UDW,
608 rc_range_params_dword[3]);
609 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2,
610 rc_range_params_dword[4]);
611 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2_UDW,
612 rc_range_params_dword[5]);
613 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3,
614 rc_range_params_dword[6]);
615 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3_UDW,
616 rc_range_params_dword[7]);
617 if (vdsc_instances_per_pipe > 1) {
618 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_0,
619 rc_range_params_dword[0]);
620 intel_de_write(dev_priv,
621 DSCC_RC_RANGE_PARAMETERS_0_UDW,
622 rc_range_params_dword[1]);
623 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_1,
624 rc_range_params_dword[2]);
625 intel_de_write(dev_priv,
626 DSCC_RC_RANGE_PARAMETERS_1_UDW,
627 rc_range_params_dword[3]);
628 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_2,
629 rc_range_params_dword[4]);
630 intel_de_write(dev_priv,
631 DSCC_RC_RANGE_PARAMETERS_2_UDW,
632 rc_range_params_dword[5]);
633 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_3,
634 rc_range_params_dword[6]);
635 intel_de_write(dev_priv,
636 DSCC_RC_RANGE_PARAMETERS_3_UDW,
637 rc_range_params_dword[7]);
638 }
639 } else {
640 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_0(pipe),
641 rc_range_params_dword[0]);
642 intel_de_write(dev_priv,
643 ICL_DSC0_RC_RANGE_PARAMETERS_0_UDW(pipe),
644 rc_range_params_dword[1]);
645 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_1(pipe),
646 rc_range_params_dword[2]);
647 intel_de_write(dev_priv,
648 ICL_DSC0_RC_RANGE_PARAMETERS_1_UDW(pipe),
649 rc_range_params_dword[3]);
650 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_2(pipe),
651 rc_range_params_dword[4]);
652 intel_de_write(dev_priv,
653 ICL_DSC0_RC_RANGE_PARAMETERS_2_UDW(pipe),
654 rc_range_params_dword[5]);
655 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_3(pipe),
656 rc_range_params_dword[6]);
657 intel_de_write(dev_priv,
658 ICL_DSC0_RC_RANGE_PARAMETERS_3_UDW(pipe),
659 rc_range_params_dword[7]);
660 if (vdsc_instances_per_pipe > 1) {
661 intel_de_write(dev_priv,
662 ICL_DSC1_RC_RANGE_PARAMETERS_0(pipe),
663 rc_range_params_dword[0]);
664 intel_de_write(dev_priv,
665 ICL_DSC1_RC_RANGE_PARAMETERS_0_UDW(pipe),
666 rc_range_params_dword[1]);
667 intel_de_write(dev_priv,
668 ICL_DSC1_RC_RANGE_PARAMETERS_1(pipe),
669 rc_range_params_dword[2]);
670 intel_de_write(dev_priv,
671 ICL_DSC1_RC_RANGE_PARAMETERS_1_UDW(pipe),
672 rc_range_params_dword[3]);
673 intel_de_write(dev_priv,
674 ICL_DSC1_RC_RANGE_PARAMETERS_2(pipe),
675 rc_range_params_dword[4]);
676 intel_de_write(dev_priv,
677 ICL_DSC1_RC_RANGE_PARAMETERS_2_UDW(pipe),
678 rc_range_params_dword[5]);
679 intel_de_write(dev_priv,
680 ICL_DSC1_RC_RANGE_PARAMETERS_3(pipe),
681 rc_range_params_dword[6]);
682 intel_de_write(dev_priv,
683 ICL_DSC1_RC_RANGE_PARAMETERS_3_UDW(pipe),
684 rc_range_params_dword[7]);
685 }
686 }
687}
688
689void intel_dsc_dsi_pps_write(struct intel_encoder *encoder,
690 const struct intel_crtc_state *crtc_state)
691{
692 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
693 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
694 struct mipi_dsi_device *dsi;
695 struct drm_dsc_picture_parameter_set pps;
696 enum port port;
697
698 if (!crtc_state->dsc.compression_enable)
699 return;
700
701 drm_dsc_pps_payload_pack(&pps, vdsc_cfg);
702
703 for_each_dsi_port(port, intel_dsi->ports) {
704 dsi = intel_dsi->dsi_hosts[port]->device;
705
706 mipi_dsi_picture_parameter_set(dsi, &pps);
707 mipi_dsi_compression_mode(dsi, true);
708 }
709}
710
711void intel_dsc_dp_pps_write(struct intel_encoder *encoder,
712 const struct intel_crtc_state *crtc_state)
713{
714 struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
715 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
716 struct drm_dsc_pps_infoframe dp_dsc_pps_sdp;
717
718 if (!crtc_state->dsc.compression_enable)
719 return;
720
721 /* Prepare DP SDP PPS header as per DP 1.4 spec, Table 2-123 */
722 drm_dsc_dp_pps_header_init(&dp_dsc_pps_sdp.pps_header);
723
724 /* Fill the PPS payload bytes as per DSC spec 1.2 Table 4-1 */
725 drm_dsc_pps_payload_pack(&dp_dsc_pps_sdp.pps_payload, vdsc_cfg);
726
727 dig_port->write_infoframe(encoder, crtc_state,
728 DP_SDP_PPS, &dp_dsc_pps_sdp,
729 sizeof(dp_dsc_pps_sdp));
730}
731
732static i915_reg_t dss_ctl1_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
733{
734 return is_pipe_dsc(crtc, cpu_transcoder) ?
735 ICL_PIPE_DSS_CTL1(crtc->pipe) : DSS_CTL1;
736}
737
738static i915_reg_t dss_ctl2_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
739{
740 return is_pipe_dsc(crtc, cpu_transcoder) ?
741 ICL_PIPE_DSS_CTL2(crtc->pipe) : DSS_CTL2;
742}
743
744void intel_uncompressed_joiner_enable(const struct intel_crtc_state *crtc_state)
745{
746 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
747 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
748 u32 dss_ctl1_val = 0;
749
750 if (crtc_state->joiner_pipes && !crtc_state->dsc.compression_enable) {
751 if (intel_crtc_is_bigjoiner_secondary(crtc_state))
752 dss_ctl1_val |= UNCOMPRESSED_JOINER_SECONDARY;
753 else
754 dss_ctl1_val |= UNCOMPRESSED_JOINER_PRIMARY;
755
756 intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val);
757 }
758}
759
760void intel_dsc_enable(const struct intel_crtc_state *crtc_state)
761{
762 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
763 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
764 u32 dss_ctl1_val = 0;
765 u32 dss_ctl2_val = 0;
766 int vdsc_instances_per_pipe = intel_dsc_get_vdsc_per_pipe(crtc_state);
767
768 if (!crtc_state->dsc.compression_enable)
769 return;
770
771 intel_dsc_pps_configure(crtc_state);
772
773 dss_ctl2_val |= LEFT_BRANCH_VDSC_ENABLE;
774 if (vdsc_instances_per_pipe > 1) {
775 dss_ctl2_val |= RIGHT_BRANCH_VDSC_ENABLE;
776 dss_ctl1_val |= JOINER_ENABLE;
777 }
778 if (crtc_state->joiner_pipes) {
779 if (intel_crtc_ultrajoiner_enable_needed(crtc_state))
780 dss_ctl1_val |= ULTRA_JOINER_ENABLE;
781
782 if (intel_crtc_is_ultrajoiner_primary(crtc_state))
783 dss_ctl1_val |= PRIMARY_ULTRA_JOINER_ENABLE;
784
785 dss_ctl1_val |= BIG_JOINER_ENABLE;
786
787 if (intel_crtc_is_bigjoiner_primary(crtc_state))
788 dss_ctl1_val |= PRIMARY_BIG_JOINER_ENABLE;
789 }
790 intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val);
791 intel_de_write(dev_priv, dss_ctl2_reg(crtc, crtc_state->cpu_transcoder), dss_ctl2_val);
792}
793
794void intel_dsc_disable(const struct intel_crtc_state *old_crtc_state)
795{
796 struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
797 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
798
799 /* Disable only if either of them is enabled */
800 if (old_crtc_state->dsc.compression_enable ||
801 old_crtc_state->joiner_pipes) {
802 intel_de_write(dev_priv, dss_ctl1_reg(crtc, old_crtc_state->cpu_transcoder), 0);
803 intel_de_write(dev_priv, dss_ctl2_reg(crtc, old_crtc_state->cpu_transcoder), 0);
804 }
805}
806
807static u32 intel_dsc_pps_read(struct intel_crtc_state *crtc_state, int pps,
808 bool *all_equal)
809{
810 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
811 struct drm_i915_private *i915 = to_i915(crtc->base.dev);
812 i915_reg_t dsc_reg[2];
813 int i, vdsc_per_pipe, dsc_reg_num;
814 u32 val;
815
816 vdsc_per_pipe = intel_dsc_get_vdsc_per_pipe(crtc_state);
817 dsc_reg_num = min_t(int, ARRAY_SIZE(dsc_reg), vdsc_per_pipe);
818
819 drm_WARN_ON_ONCE(&i915->drm, dsc_reg_num < vdsc_per_pipe);
820
821 intel_dsc_get_pps_reg(crtc_state, pps, dsc_reg, dsc_reg_num);
822
823 *all_equal = true;
824
825 val = intel_de_read(i915, dsc_reg[0]);
826
827 for (i = 1; i < dsc_reg_num; i++) {
828 if (intel_de_read(i915, dsc_reg[i]) != val) {
829 *all_equal = false;
830 break;
831 }
832 }
833
834 return val;
835}
836
837static u32 intel_dsc_pps_read_and_verify(struct intel_crtc_state *crtc_state, int pps)
838{
839 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
840 struct drm_i915_private *i915 = to_i915(crtc->base.dev);
841 u32 val;
842 bool all_equal;
843
844 val = intel_dsc_pps_read(crtc_state, pps, &all_equal);
845 drm_WARN_ON(&i915->drm, !all_equal);
846
847 return val;
848}
849
850static void intel_dsc_get_pps_config(struct intel_crtc_state *crtc_state)
851{
852 struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
853 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
854 struct drm_i915_private *i915 = to_i915(crtc->base.dev);
855 int num_vdsc_instances = intel_dsc_get_num_vdsc_instances(crtc_state);
856 u32 pps_temp;
857
858 /* PPS 0 */
859 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 0);
860
861 vdsc_cfg->bits_per_component = REG_FIELD_GET(DSC_PPS0_BPC_MASK, pps_temp);
862 vdsc_cfg->line_buf_depth = REG_FIELD_GET(DSC_PPS0_LINE_BUF_DEPTH_MASK, pps_temp);
863 vdsc_cfg->block_pred_enable = pps_temp & DSC_PPS0_BLOCK_PREDICTION;
864 vdsc_cfg->convert_rgb = pps_temp & DSC_PPS0_COLOR_SPACE_CONVERSION;
865 vdsc_cfg->simple_422 = pps_temp & DSC_PPS0_422_ENABLE;
866 vdsc_cfg->native_422 = pps_temp & DSC_PPS0_NATIVE_422_ENABLE;
867 vdsc_cfg->native_420 = pps_temp & DSC_PPS0_NATIVE_420_ENABLE;
868 vdsc_cfg->vbr_enable = pps_temp & DSC_PPS0_VBR_ENABLE;
869
870 /* PPS 1 */
871 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 1);
872
873 vdsc_cfg->bits_per_pixel = REG_FIELD_GET(DSC_PPS1_BPP_MASK, pps_temp);
874
875 if (vdsc_cfg->native_420)
876 vdsc_cfg->bits_per_pixel >>= 1;
877
878 crtc_state->dsc.compressed_bpp_x16 = vdsc_cfg->bits_per_pixel;
879
880 /* PPS 2 */
881 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 2);
882
883 vdsc_cfg->pic_width = REG_FIELD_GET(DSC_PPS2_PIC_WIDTH_MASK, pps_temp) * num_vdsc_instances;
884 vdsc_cfg->pic_height = REG_FIELD_GET(DSC_PPS2_PIC_HEIGHT_MASK, pps_temp);
885
886 /* PPS 3 */
887 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 3);
888
889 vdsc_cfg->slice_width = REG_FIELD_GET(DSC_PPS3_SLICE_WIDTH_MASK, pps_temp);
890 vdsc_cfg->slice_height = REG_FIELD_GET(DSC_PPS3_SLICE_HEIGHT_MASK, pps_temp);
891
892 /* PPS 4 */
893 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 4);
894
895 vdsc_cfg->initial_dec_delay = REG_FIELD_GET(DSC_PPS4_INITIAL_DEC_DELAY_MASK, pps_temp);
896 vdsc_cfg->initial_xmit_delay = REG_FIELD_GET(DSC_PPS4_INITIAL_XMIT_DELAY_MASK, pps_temp);
897
898 /* PPS 5 */
899 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 5);
900
901 vdsc_cfg->scale_decrement_interval = REG_FIELD_GET(DSC_PPS5_SCALE_DEC_INT_MASK, pps_temp);
902 vdsc_cfg->scale_increment_interval = REG_FIELD_GET(DSC_PPS5_SCALE_INC_INT_MASK, pps_temp);
903
904 /* PPS 6 */
905 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 6);
906
907 vdsc_cfg->initial_scale_value = REG_FIELD_GET(DSC_PPS6_INITIAL_SCALE_VALUE_MASK, pps_temp);
908 vdsc_cfg->first_line_bpg_offset = REG_FIELD_GET(DSC_PPS6_FIRST_LINE_BPG_OFFSET_MASK, pps_temp);
909 vdsc_cfg->flatness_min_qp = REG_FIELD_GET(DSC_PPS6_FLATNESS_MIN_QP_MASK, pps_temp);
910 vdsc_cfg->flatness_max_qp = REG_FIELD_GET(DSC_PPS6_FLATNESS_MAX_QP_MASK, pps_temp);
911
912 /* PPS 7 */
913 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 7);
914
915 vdsc_cfg->nfl_bpg_offset = REG_FIELD_GET(DSC_PPS7_NFL_BPG_OFFSET_MASK, pps_temp);
916 vdsc_cfg->slice_bpg_offset = REG_FIELD_GET(DSC_PPS7_SLICE_BPG_OFFSET_MASK, pps_temp);
917
918 /* PPS 8 */
919 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 8);
920
921 vdsc_cfg->initial_offset = REG_FIELD_GET(DSC_PPS8_INITIAL_OFFSET_MASK, pps_temp);
922 vdsc_cfg->final_offset = REG_FIELD_GET(DSC_PPS8_FINAL_OFFSET_MASK, pps_temp);
923
924 /* PPS 9 */
925 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 9);
926
927 vdsc_cfg->rc_model_size = REG_FIELD_GET(DSC_PPS9_RC_MODEL_SIZE_MASK, pps_temp);
928
929 /* PPS 10 */
930 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 10);
931
932 vdsc_cfg->rc_quant_incr_limit0 = REG_FIELD_GET(DSC_PPS10_RC_QUANT_INC_LIMIT0_MASK, pps_temp);
933 vdsc_cfg->rc_quant_incr_limit1 = REG_FIELD_GET(DSC_PPS10_RC_QUANT_INC_LIMIT1_MASK, pps_temp);
934
935 /* PPS 16 */
936 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 16);
937
938 vdsc_cfg->slice_chunk_size = REG_FIELD_GET(DSC_PPS16_SLICE_CHUNK_SIZE_MASK, pps_temp);
939
940 if (DISPLAY_VER(i915) >= 14) {
941 /* PPS 17 */
942 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 17);
943
944 vdsc_cfg->second_line_bpg_offset = REG_FIELD_GET(DSC_PPS17_SL_BPG_OFFSET_MASK, pps_temp);
945
946 /* PPS 18 */
947 pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 18);
948
949 vdsc_cfg->nsl_bpg_offset = REG_FIELD_GET(DSC_PPS18_NSL_BPG_OFFSET_MASK, pps_temp);
950 vdsc_cfg->second_line_offset_adj = REG_FIELD_GET(DSC_PPS18_SL_OFFSET_ADJ_MASK, pps_temp);
951 }
952}
953
954void intel_dsc_get_config(struct intel_crtc_state *crtc_state)
955{
956 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
957 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
958 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
959 enum intel_display_power_domain power_domain;
960 intel_wakeref_t wakeref;
961 u32 dss_ctl1, dss_ctl2;
962
963 if (!intel_dsc_source_support(crtc_state))
964 return;
965
966 power_domain = intel_dsc_power_domain(crtc, cpu_transcoder);
967
968 wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
969 if (!wakeref)
970 return;
971
972 dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc, cpu_transcoder));
973 dss_ctl2 = intel_de_read(dev_priv, dss_ctl2_reg(crtc, cpu_transcoder));
974
975 crtc_state->dsc.compression_enable = dss_ctl2 & LEFT_BRANCH_VDSC_ENABLE;
976 if (!crtc_state->dsc.compression_enable)
977 goto out;
978
979 crtc_state->dsc.dsc_split = (dss_ctl2 & RIGHT_BRANCH_VDSC_ENABLE) &&
980 (dss_ctl1 & JOINER_ENABLE);
981
982 intel_dsc_get_pps_config(crtc_state);
983out:
984 intel_display_power_put(dev_priv, power_domain, wakeref);
985}
986
987static void intel_vdsc_dump_state(struct drm_printer *p, int indent,
988 const struct intel_crtc_state *crtc_state)
989{
990 drm_printf_indent(p, indent,
991 "dsc-dss: compressed-bpp:" FXP_Q4_FMT ", slice-count: %d, split: %s\n",
992 FXP_Q4_ARGS(crtc_state->dsc.compressed_bpp_x16),
993 crtc_state->dsc.slice_count,
994 str_yes_no(crtc_state->dsc.dsc_split));
995}
996
997void intel_vdsc_state_dump(struct drm_printer *p, int indent,
998 const struct intel_crtc_state *crtc_state)
999{
1000 if (!crtc_state->dsc.compression_enable)
1001 return;
1002
1003 intel_vdsc_dump_state(p, indent, crtc_state);
1004 drm_dsc_dump_config(p, indent, &crtc_state->dsc.config);
1005}
1// SPDX-License-Identifier: MIT
2/*
3 * Copyright © 2018 Intel Corporation
4 *
5 * Author: Gaurav K Singh <gaurav.k.singh@intel.com>
6 * Manasi Navare <manasi.d.navare@intel.com>
7 */
8
9#include "i915_drv.h"
10#include "intel_display_types.h"
11#include "intel_dsi.h"
12#include "intel_vdsc.h"
13
14enum ROW_INDEX_BPP {
15 ROW_INDEX_6BPP = 0,
16 ROW_INDEX_8BPP,
17 ROW_INDEX_10BPP,
18 ROW_INDEX_12BPP,
19 ROW_INDEX_15BPP,
20 MAX_ROW_INDEX
21};
22
23enum COLUMN_INDEX_BPC {
24 COLUMN_INDEX_8BPC = 0,
25 COLUMN_INDEX_10BPC,
26 COLUMN_INDEX_12BPC,
27 COLUMN_INDEX_14BPC,
28 COLUMN_INDEX_16BPC,
29 MAX_COLUMN_INDEX
30};
31
32/* From DSC_v1.11 spec, rc_parameter_Set syntax element typically constant */
33static const u16 rc_buf_thresh[] = {
34 896, 1792, 2688, 3584, 4480, 5376, 6272, 6720, 7168, 7616,
35 7744, 7872, 8000, 8064
36};
37
38struct rc_parameters {
39 u16 initial_xmit_delay;
40 u8 first_line_bpg_offset;
41 u16 initial_offset;
42 u8 flatness_min_qp;
43 u8 flatness_max_qp;
44 u8 rc_quant_incr_limit0;
45 u8 rc_quant_incr_limit1;
46 struct drm_dsc_rc_range_parameters rc_range_params[DSC_NUM_BUF_RANGES];
47};
48
49/*
50 * Selected Rate Control Related Parameter Recommended Values
51 * from DSC_v1.11 spec & C Model release: DSC_model_20161212
52 */
53static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = {
54{
55 /* 6BPP/8BPC */
56 { 768, 15, 6144, 3, 13, 11, 11, {
57 { 0, 4, 0 }, { 1, 6, -2 }, { 3, 8, -2 }, { 4, 8, -4 },
58 { 5, 9, -6 }, { 5, 9, -6 }, { 6, 9, -6 }, { 6, 10, -8 },
59 { 7, 11, -8 }, { 8, 12, -10 }, { 9, 12, -10 }, { 10, 12, -12 },
60 { 10, 12, -12 }, { 11, 12, -12 }, { 13, 14, -12 }
61 }
62 },
63 /* 6BPP/10BPC */
64 { 768, 15, 6144, 7, 17, 15, 15, {
65 { 0, 8, 0 }, { 3, 10, -2 }, { 7, 12, -2 }, { 8, 12, -4 },
66 { 9, 13, -6 }, { 9, 13, -6 }, { 10, 13, -6 }, { 10, 14, -8 },
67 { 11, 15, -8 }, { 12, 16, -10 }, { 13, 16, -10 },
68 { 14, 16, -12 }, { 14, 16, -12 }, { 15, 16, -12 },
69 { 17, 18, -12 }
70 }
71 },
72 /* 6BPP/12BPC */
73 { 768, 15, 6144, 11, 21, 19, 19, {
74 { 0, 12, 0 }, { 5, 14, -2 }, { 11, 16, -2 }, { 12, 16, -4 },
75 { 13, 17, -6 }, { 13, 17, -6 }, { 14, 17, -6 }, { 14, 18, -8 },
76 { 15, 19, -8 }, { 16, 20, -10 }, { 17, 20, -10 },
77 { 18, 20, -12 }, { 18, 20, -12 }, { 19, 20, -12 },
78 { 21, 22, -12 }
79 }
80 },
81 /* 6BPP/14BPC */
82 { 768, 15, 6144, 15, 25, 23, 27, {
83 { 0, 16, 0 }, { 7, 18, -2 }, { 15, 20, -2 }, { 16, 20, -4 },
84 { 17, 21, -6 }, { 17, 21, -6 }, { 18, 21, -6 }, { 18, 22, -8 },
85 { 19, 23, -8 }, { 20, 24, -10 }, { 21, 24, -10 },
86 { 22, 24, -12 }, { 22, 24, -12 }, { 23, 24, -12 },
87 { 25, 26, -12 }
88 }
89 },
90 /* 6BPP/16BPC */
91 { 768, 15, 6144, 19, 29, 27, 27, {
92 { 0, 20, 0 }, { 9, 22, -2 }, { 19, 24, -2 }, { 20, 24, -4 },
93 { 21, 25, -6 }, { 21, 25, -6 }, { 22, 25, -6 }, { 22, 26, -8 },
94 { 23, 27, -8 }, { 24, 28, -10 }, { 25, 28, -10 },
95 { 26, 28, -12 }, { 26, 28, -12 }, { 27, 28, -12 },
96 { 29, 30, -12 }
97 }
98 },
99},
100{
101 /* 8BPP/8BPC */
102 { 512, 12, 6144, 3, 12, 11, 11, {
103 { 0, 4, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 1, 6, -2 },
104 { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 },
105 { 3, 9, -8 }, { 3, 10, -10 }, { 5, 11, -10 }, { 5, 12, -12 },
106 { 5, 13, -12 }, { 7, 13, -12 }, { 13, 15, -12 }
107 }
108 },
109 /* 8BPP/10BPC */
110 { 512, 12, 6144, 7, 16, 15, 15, {
111 { 0, 4, 2 }, { 4, 8, 0 }, { 5, 9, 0 }, { 5, 10, -2 },
112 { 7, 11, -4 }, { 7, 11, -6 }, { 7, 11, -8 }, { 7, 12, -8 },
113 { 7, 13, -8 }, { 7, 14, -10 }, { 9, 15, -10 }, { 9, 16, -12 },
114 { 9, 17, -12 }, { 11, 17, -12 }, { 17, 19, -12 }
115 }
116 },
117 /* 8BPP/12BPC */
118 { 512, 12, 6144, 11, 20, 19, 19, {
119 { 0, 12, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 9, 14, -2 },
120 { 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 },
121 { 11, 17, -8 }, { 11, 18, -10 }, { 13, 19, -10 },
122 { 13, 20, -12 }, { 13, 21, -12 }, { 15, 21, -12 },
123 { 21, 23, -12 }
124 }
125 },
126 /* 8BPP/14BPC */
127 { 512, 12, 6144, 15, 24, 23, 23, {
128 { 0, 12, 0 }, { 5, 13, 0 }, { 11, 15, 0 }, { 12, 17, -2 },
129 { 15, 19, -4 }, { 15, 19, -6 }, { 15, 19, -8 }, { 15, 20, -8 },
130 { 15, 21, -8 }, { 15, 22, -10 }, { 17, 22, -10 },
131 { 17, 23, -12 }, { 17, 23, -12 }, { 21, 24, -12 },
132 { 24, 25, -12 }
133 }
134 },
135 /* 8BPP/16BPC */
136 { 512, 12, 6144, 19, 28, 27, 27, {
137 { 0, 12, 2 }, { 6, 14, 0 }, { 13, 17, 0 }, { 15, 20, -2 },
138 { 19, 23, -4 }, { 19, 23, -6 }, { 19, 23, -8 }, { 19, 24, -8 },
139 { 19, 25, -8 }, { 19, 26, -10 }, { 21, 26, -10 },
140 { 21, 27, -12 }, { 21, 27, -12 }, { 25, 28, -12 },
141 { 28, 29, -12 }
142 }
143 },
144},
145{
146 /* 10BPP/8BPC */
147 { 410, 15, 5632, 3, 12, 11, 11, {
148 { 0, 3, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 2, 6, -2 },
149 { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 },
150 { 3, 9, -8 }, { 3, 9, -10 }, { 5, 10, -10 }, { 5, 10, -10 },
151 { 5, 11, -12 }, { 7, 11, -12 }, { 11, 12, -12 }
152 }
153 },
154 /* 10BPP/10BPC */
155 { 410, 15, 5632, 7, 16, 15, 15, {
156 { 0, 7, 2 }, { 4, 8, 0 }, { 5, 9, 0 }, { 6, 10, -2 },
157 { 7, 11, -4 }, { 7, 11, -6 }, { 7, 11, -8 }, { 7, 12, -8 },
158 { 7, 13, -8 }, { 7, 13, -10 }, { 9, 14, -10 }, { 9, 14, -10 },
159 { 9, 15, -12 }, { 11, 15, -12 }, { 15, 16, -12 }
160 }
161 },
162 /* 10BPP/12BPC */
163 { 410, 15, 5632, 11, 20, 19, 19, {
164 { 0, 11, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 10, 14, -2 },
165 { 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 },
166 { 11, 17, -8 }, { 11, 17, -10 }, { 13, 18, -10 },
167 { 13, 18, -10 }, { 13, 19, -12 }, { 15, 19, -12 },
168 { 19, 20, -12 }
169 }
170 },
171 /* 10BPP/14BPC */
172 { 410, 15, 5632, 15, 24, 23, 23, {
173 { 0, 11, 2 }, { 5, 13, 0 }, { 11, 15, 0 }, { 13, 18, -2 },
174 { 15, 19, -4 }, { 15, 19, -6 }, { 15, 19, -8 }, { 15, 20, -8 },
175 { 15, 21, -8 }, { 15, 21, -10 }, { 17, 22, -10 },
176 { 17, 22, -10 }, { 17, 23, -12 }, { 19, 23, -12 },
177 { 23, 24, -12 }
178 }
179 },
180 /* 10BPP/16BPC */
181 { 410, 15, 5632, 19, 28, 27, 27, {
182 { 0, 11, 2 }, { 6, 14, 0 }, { 13, 17, 0 }, { 16, 20, -2 },
183 { 19, 23, -4 }, { 19, 23, -6 }, { 19, 23, -8 }, { 19, 24, -8 },
184 { 19, 25, -8 }, { 19, 25, -10 }, { 21, 26, -10 },
185 { 21, 26, -10 }, { 21, 27, -12 }, { 23, 27, -12 },
186 { 27, 28, -12 }
187 }
188 },
189},
190{
191 /* 12BPP/8BPC */
192 { 341, 15, 2048, 3, 12, 11, 11, {
193 { 0, 2, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 1, 6, -2 },
194 { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 },
195 { 3, 9, -8 }, { 3, 10, -10 }, { 5, 11, -10 },
196 { 5, 12, -12 }, { 5, 13, -12 }, { 7, 13, -12 }, { 13, 15, -12 }
197 }
198 },
199 /* 12BPP/10BPC */
200 { 341, 15, 2048, 7, 16, 15, 15, {
201 { 0, 2, 2 }, { 2, 5, 0 }, { 3, 7, 0 }, { 4, 8, -2 },
202 { 6, 9, -4 }, { 7, 10, -6 }, { 7, 11, -8 }, { 7, 12, -8 },
203 { 7, 13, -8 }, { 7, 14, -10 }, { 9, 15, -10 }, { 9, 16, -12 },
204 { 9, 17, -12 }, { 11, 17, -12 }, { 17, 19, -12 }
205 }
206 },
207 /* 12BPP/12BPC */
208 { 341, 15, 2048, 11, 20, 19, 19, {
209 { 0, 6, 2 }, { 4, 9, 0 }, { 7, 11, 0 }, { 8, 12, -2 },
210 { 10, 13, -4 }, { 11, 14, -6 }, { 11, 15, -8 }, { 11, 16, -8 },
211 { 11, 17, -8 }, { 11, 18, -10 }, { 13, 19, -10 },
212 { 13, 20, -12 }, { 13, 21, -12 }, { 15, 21, -12 },
213 { 21, 23, -12 }
214 }
215 },
216 /* 12BPP/14BPC */
217 { 341, 15, 2048, 15, 24, 23, 23, {
218 { 0, 6, 2 }, { 7, 10, 0 }, { 9, 13, 0 }, { 11, 16, -2 },
219 { 14, 17, -4 }, { 15, 18, -6 }, { 15, 19, -8 }, { 15, 20, -8 },
220 { 15, 20, -8 }, { 15, 21, -10 }, { 17, 21, -10 },
221 { 17, 21, -12 }, { 17, 21, -12 }, { 19, 22, -12 },
222 { 22, 23, -12 }
223 }
224 },
225 /* 12BPP/16BPC */
226 { 341, 15, 2048, 19, 28, 27, 27, {
227 { 0, 6, 2 }, { 6, 11, 0 }, { 11, 15, 0 }, { 14, 18, -2 },
228 { 18, 21, -4 }, { 19, 22, -6 }, { 19, 23, -8 }, { 19, 24, -8 },
229 { 19, 24, -8 }, { 19, 25, -10 }, { 21, 25, -10 },
230 { 21, 25, -12 }, { 21, 25, -12 }, { 23, 26, -12 },
231 { 26, 27, -12 }
232 }
233 },
234},
235{
236 /* 15BPP/8BPC */
237 { 273, 15, 2048, 3, 12, 11, 11, {
238 { 0, 0, 10 }, { 0, 1, 8 }, { 0, 1, 6 }, { 0, 2, 4 },
239 { 1, 2, 2 }, { 1, 3, 0 }, { 1, 3, -2 }, { 2, 4, -4 },
240 { 2, 5, -6 }, { 3, 5, -8 }, { 4, 6, -10 }, { 4, 7, -10 },
241 { 5, 7, -12 }, { 7, 8, -12 }, { 8, 9, -12 }
242 }
243 },
244 /* 15BPP/10BPC */
245 { 273, 15, 2048, 7, 16, 15, 15, {
246 { 0, 2, 10 }, { 2, 5, 8 }, { 3, 5, 6 }, { 4, 6, 4 },
247 { 5, 6, 2 }, { 5, 7, 0 }, { 5, 7, -2 }, { 6, 8, -4 },
248 { 6, 9, -6 }, { 7, 9, -8 }, { 8, 10, -10 }, { 8, 11, -10 },
249 { 9, 11, -12 }, { 11, 12, -12 }, { 12, 13, -12 }
250 }
251 },
252 /* 15BPP/12BPC */
253 { 273, 15, 2048, 11, 20, 19, 19, {
254 { 0, 4, 10 }, { 2, 7, 8 }, { 4, 9, 6 }, { 6, 11, 4 },
255 { 9, 11, 2 }, { 9, 11, 0 }, { 9, 12, -2 }, { 10, 12, -4 },
256 { 11, 13, -6 }, { 11, 13, -8 }, { 12, 14, -10 },
257 { 13, 15, -10 }, { 13, 15, -12 }, { 15, 16, -12 },
258 { 16, 17, -12 }
259 }
260 },
261 /* 15BPP/14BPC */
262 { 273, 15, 2048, 15, 24, 23, 23, {
263 { 0, 4, 10 }, { 3, 8, 8 }, { 6, 11, 6 }, { 9, 14, 4 },
264 { 13, 15, 2 }, { 13, 15, 0 }, { 13, 16, -2 }, { 14, 16, -4 },
265 { 15, 17, -6 }, { 15, 17, -8 }, { 16, 18, -10 },
266 { 17, 19, -10 }, { 17, 19, -12 }, { 19, 20, -12 },
267 { 20, 21, -12 }
268 }
269 },
270 /* 15BPP/16BPC */
271 { 273, 15, 2048, 19, 28, 27, 27, {
272 { 0, 4, 10 }, { 4, 9, 8 }, { 8, 13, 6 }, { 12, 17, 4 },
273 { 17, 19, 2 }, { 17, 20, 0 }, { 17, 20, -2 }, { 18, 20, -4 },
274 { 19, 21, -6 }, { 19, 21, -8 }, { 20, 22, -10 },
275 { 21, 23, -10 }, { 21, 23, -12 }, { 23, 24, -12 },
276 { 24, 25, -12 }
277 }
278 }
279}
280
281};
282
283static int get_row_index_for_rc_params(u16 compressed_bpp)
284{
285 switch (compressed_bpp) {
286 case 6:
287 return ROW_INDEX_6BPP;
288 case 8:
289 return ROW_INDEX_8BPP;
290 case 10:
291 return ROW_INDEX_10BPP;
292 case 12:
293 return ROW_INDEX_12BPP;
294 case 15:
295 return ROW_INDEX_15BPP;
296 default:
297 return -EINVAL;
298 }
299}
300
301static int get_column_index_for_rc_params(u8 bits_per_component)
302{
303 switch (bits_per_component) {
304 case 8:
305 return COLUMN_INDEX_8BPC;
306 case 10:
307 return COLUMN_INDEX_10BPC;
308 case 12:
309 return COLUMN_INDEX_12BPC;
310 case 14:
311 return COLUMN_INDEX_14BPC;
312 case 16:
313 return COLUMN_INDEX_16BPC;
314 default:
315 return -EINVAL;
316 }
317}
318
319static const struct rc_parameters *get_rc_params(u16 compressed_bpp,
320 u8 bits_per_component)
321{
322 int row_index, column_index;
323
324 row_index = get_row_index_for_rc_params(compressed_bpp);
325 if (row_index < 0)
326 return NULL;
327
328 column_index = get_column_index_for_rc_params(bits_per_component);
329 if (column_index < 0)
330 return NULL;
331
332 return &rc_parameters[row_index][column_index];
333}
334
335bool intel_dsc_source_support(struct intel_encoder *encoder,
336 const struct intel_crtc_state *crtc_state)
337{
338 const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
339 struct drm_i915_private *i915 = to_i915(encoder->base.dev);
340 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
341 enum pipe pipe = crtc->pipe;
342
343 if (!INTEL_INFO(i915)->display.has_dsc)
344 return false;
345
346 /* On TGL, DSC is supported on all Pipes */
347 if (INTEL_GEN(i915) >= 12)
348 return true;
349
350 if (INTEL_GEN(i915) >= 10 &&
351 (pipe != PIPE_A ||
352 (cpu_transcoder == TRANSCODER_EDP ||
353 cpu_transcoder == TRANSCODER_DSI_0 ||
354 cpu_transcoder == TRANSCODER_DSI_1)))
355 return true;
356
357 return false;
358}
359
360static bool is_pipe_dsc(const struct intel_crtc_state *crtc_state)
361{
362 const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
363 const struct drm_i915_private *i915 = to_i915(crtc->base.dev);
364 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
365
366 if (INTEL_GEN(i915) >= 12)
367 return true;
368
369 if (cpu_transcoder == TRANSCODER_EDP ||
370 cpu_transcoder == TRANSCODER_DSI_0 ||
371 cpu_transcoder == TRANSCODER_DSI_1)
372 return false;
373
374 /* There's no pipe A DSC engine on ICL */
375 drm_WARN_ON(&i915->drm, crtc->pipe == PIPE_A);
376
377 return true;
378}
379
380int intel_dsc_compute_params(struct intel_encoder *encoder,
381 struct intel_crtc_state *pipe_config)
382{
383 struct drm_dsc_config *vdsc_cfg = &pipe_config->dsc.config;
384 u16 compressed_bpp = pipe_config->dsc.compressed_bpp;
385 const struct rc_parameters *rc_params;
386 u8 i = 0;
387
388 vdsc_cfg->pic_width = pipe_config->hw.adjusted_mode.crtc_hdisplay;
389 vdsc_cfg->pic_height = pipe_config->hw.adjusted_mode.crtc_vdisplay;
390 vdsc_cfg->slice_width = DIV_ROUND_UP(vdsc_cfg->pic_width,
391 pipe_config->dsc.slice_count);
392
393 /* Gen 11 does not support YCbCr */
394 vdsc_cfg->simple_422 = false;
395 /* Gen 11 does not support VBR */
396 vdsc_cfg->vbr_enable = false;
397
398 /* Gen 11 only supports integral values of bpp */
399 vdsc_cfg->bits_per_pixel = compressed_bpp << 4;
400 vdsc_cfg->bits_per_component = pipe_config->pipe_bpp / 3;
401
402 for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++) {
403 /*
404 * six 0s are appended to the lsb of each threshold value
405 * internally in h/w.
406 * Only 8 bits are allowed for programming RcBufThreshold
407 */
408 vdsc_cfg->rc_buf_thresh[i] = rc_buf_thresh[i] >> 6;
409 }
410
411 /*
412 * For 6bpp, RC Buffer threshold 12 and 13 need a different value
413 * as per C Model
414 */
415 if (compressed_bpp == 6) {
416 vdsc_cfg->rc_buf_thresh[12] = 0x7C;
417 vdsc_cfg->rc_buf_thresh[13] = 0x7D;
418 }
419
420 rc_params = get_rc_params(compressed_bpp, vdsc_cfg->bits_per_component);
421 if (!rc_params)
422 return -EINVAL;
423
424 vdsc_cfg->first_line_bpg_offset = rc_params->first_line_bpg_offset;
425 vdsc_cfg->initial_xmit_delay = rc_params->initial_xmit_delay;
426 vdsc_cfg->initial_offset = rc_params->initial_offset;
427 vdsc_cfg->flatness_min_qp = rc_params->flatness_min_qp;
428 vdsc_cfg->flatness_max_qp = rc_params->flatness_max_qp;
429 vdsc_cfg->rc_quant_incr_limit0 = rc_params->rc_quant_incr_limit0;
430 vdsc_cfg->rc_quant_incr_limit1 = rc_params->rc_quant_incr_limit1;
431
432 for (i = 0; i < DSC_NUM_BUF_RANGES; i++) {
433 vdsc_cfg->rc_range_params[i].range_min_qp =
434 rc_params->rc_range_params[i].range_min_qp;
435 vdsc_cfg->rc_range_params[i].range_max_qp =
436 rc_params->rc_range_params[i].range_max_qp;
437 /*
438 * Range BPG Offset uses 2's complement and is only a 6 bits. So
439 * mask it to get only 6 bits.
440 */
441 vdsc_cfg->rc_range_params[i].range_bpg_offset =
442 rc_params->rc_range_params[i].range_bpg_offset &
443 DSC_RANGE_BPG_OFFSET_MASK;
444 }
445
446 /*
447 * BitsPerComponent value determines mux_word_size:
448 * When BitsPerComponent is 12bpc, muxWordSize will be equal to 64 bits
449 * When BitsPerComponent is 8 or 10bpc, muxWordSize will be equal to
450 * 48 bits
451 */
452 if (vdsc_cfg->bits_per_component == 8 ||
453 vdsc_cfg->bits_per_component == 10)
454 vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC;
455 else if (vdsc_cfg->bits_per_component == 12)
456 vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC;
457
458 /* RC_MODEL_SIZE is a constant across all configurations */
459 vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST;
460 /* InitialScaleValue is a 6 bit value with 3 fractional bits (U3.3) */
461 vdsc_cfg->initial_scale_value = (vdsc_cfg->rc_model_size << 3) /
462 (vdsc_cfg->rc_model_size - vdsc_cfg->initial_offset);
463
464 return 0;
465}
466
467enum intel_display_power_domain
468intel_dsc_power_domain(const struct intel_crtc_state *crtc_state)
469{
470 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
471 struct drm_i915_private *i915 = to_i915(crtc->base.dev);
472 enum pipe pipe = crtc->pipe;
473
474 /*
475 * VDSC/joining uses a separate power well, PW2, and requires
476 * POWER_DOMAIN_TRANSCODER_VDSC_PW2 power domain in two cases:
477 *
478 * - ICL eDP/DSI transcoder
479 * - Gen12+ (except RKL) pipe A
480 *
481 * For any other pipe, VDSC/joining uses the power well associated with
482 * the pipe in use. Hence another reference on the pipe power domain
483 * will suffice. (Except no VDSC/joining on ICL pipe A.)
484 */
485 if (INTEL_GEN(i915) >= 12 && !IS_ROCKETLAKE(i915) && pipe == PIPE_A)
486 return POWER_DOMAIN_TRANSCODER_VDSC_PW2;
487 else if (is_pipe_dsc(crtc_state))
488 return POWER_DOMAIN_PIPE(pipe);
489 else
490 return POWER_DOMAIN_TRANSCODER_VDSC_PW2;
491}
492
493static void intel_dsc_pps_configure(struct intel_encoder *encoder,
494 const struct intel_crtc_state *crtc_state)
495{
496 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
497 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
498 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
499 enum pipe pipe = crtc->pipe;
500 u32 pps_val = 0;
501 u32 rc_buf_thresh_dword[4];
502 u32 rc_range_params_dword[8];
503 u8 num_vdsc_instances = (crtc_state->dsc.dsc_split) ? 2 : 1;
504 int i = 0;
505
506 /* Populate PICTURE_PARAMETER_SET_0 registers */
507 pps_val = DSC_VER_MAJ | vdsc_cfg->dsc_version_minor <<
508 DSC_VER_MIN_SHIFT |
509 vdsc_cfg->bits_per_component << DSC_BPC_SHIFT |
510 vdsc_cfg->line_buf_depth << DSC_LINE_BUF_DEPTH_SHIFT;
511 if (vdsc_cfg->block_pred_enable)
512 pps_val |= DSC_BLOCK_PREDICTION;
513 if (vdsc_cfg->convert_rgb)
514 pps_val |= DSC_COLOR_SPACE_CONVERSION;
515 if (vdsc_cfg->simple_422)
516 pps_val |= DSC_422_ENABLE;
517 if (vdsc_cfg->vbr_enable)
518 pps_val |= DSC_VBR_ENABLE;
519 drm_info(&dev_priv->drm, "PPS0 = 0x%08x\n", pps_val);
520 if (!is_pipe_dsc(crtc_state)) {
521 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_0,
522 pps_val);
523 /*
524 * If 2 VDSC instances are needed, configure PPS for second
525 * VDSC
526 */
527 if (crtc_state->dsc.dsc_split)
528 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_0,
529 pps_val);
530 } else {
531 intel_de_write(dev_priv,
532 ICL_DSC0_PICTURE_PARAMETER_SET_0(pipe),
533 pps_val);
534 if (crtc_state->dsc.dsc_split)
535 intel_de_write(dev_priv,
536 ICL_DSC1_PICTURE_PARAMETER_SET_0(pipe),
537 pps_val);
538 }
539
540 /* Populate PICTURE_PARAMETER_SET_1 registers */
541 pps_val = 0;
542 pps_val |= DSC_BPP(vdsc_cfg->bits_per_pixel);
543 drm_info(&dev_priv->drm, "PPS1 = 0x%08x\n", pps_val);
544 if (!is_pipe_dsc(crtc_state)) {
545 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_1,
546 pps_val);
547 /*
548 * If 2 VDSC instances are needed, configure PPS for second
549 * VDSC
550 */
551 if (crtc_state->dsc.dsc_split)
552 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_1,
553 pps_val);
554 } else {
555 intel_de_write(dev_priv,
556 ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe),
557 pps_val);
558 if (crtc_state->dsc.dsc_split)
559 intel_de_write(dev_priv,
560 ICL_DSC1_PICTURE_PARAMETER_SET_1(pipe),
561 pps_val);
562 }
563
564 /* Populate PICTURE_PARAMETER_SET_2 registers */
565 pps_val = 0;
566 pps_val |= DSC_PIC_HEIGHT(vdsc_cfg->pic_height) |
567 DSC_PIC_WIDTH(vdsc_cfg->pic_width / num_vdsc_instances);
568 drm_info(&dev_priv->drm, "PPS2 = 0x%08x\n", pps_val);
569 if (!is_pipe_dsc(crtc_state)) {
570 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_2,
571 pps_val);
572 /*
573 * If 2 VDSC instances are needed, configure PPS for second
574 * VDSC
575 */
576 if (crtc_state->dsc.dsc_split)
577 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_2,
578 pps_val);
579 } else {
580 intel_de_write(dev_priv,
581 ICL_DSC0_PICTURE_PARAMETER_SET_2(pipe),
582 pps_val);
583 if (crtc_state->dsc.dsc_split)
584 intel_de_write(dev_priv,
585 ICL_DSC1_PICTURE_PARAMETER_SET_2(pipe),
586 pps_val);
587 }
588
589 /* Populate PICTURE_PARAMETER_SET_3 registers */
590 pps_val = 0;
591 pps_val |= DSC_SLICE_HEIGHT(vdsc_cfg->slice_height) |
592 DSC_SLICE_WIDTH(vdsc_cfg->slice_width);
593 drm_info(&dev_priv->drm, "PPS3 = 0x%08x\n", pps_val);
594 if (!is_pipe_dsc(crtc_state)) {
595 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_3,
596 pps_val);
597 /*
598 * If 2 VDSC instances are needed, configure PPS for second
599 * VDSC
600 */
601 if (crtc_state->dsc.dsc_split)
602 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_3,
603 pps_val);
604 } else {
605 intel_de_write(dev_priv,
606 ICL_DSC0_PICTURE_PARAMETER_SET_3(pipe),
607 pps_val);
608 if (crtc_state->dsc.dsc_split)
609 intel_de_write(dev_priv,
610 ICL_DSC1_PICTURE_PARAMETER_SET_3(pipe),
611 pps_val);
612 }
613
614 /* Populate PICTURE_PARAMETER_SET_4 registers */
615 pps_val = 0;
616 pps_val |= DSC_INITIAL_XMIT_DELAY(vdsc_cfg->initial_xmit_delay) |
617 DSC_INITIAL_DEC_DELAY(vdsc_cfg->initial_dec_delay);
618 drm_info(&dev_priv->drm, "PPS4 = 0x%08x\n", pps_val);
619 if (!is_pipe_dsc(crtc_state)) {
620 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_4,
621 pps_val);
622 /*
623 * If 2 VDSC instances are needed, configure PPS for second
624 * VDSC
625 */
626 if (crtc_state->dsc.dsc_split)
627 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_4,
628 pps_val);
629 } else {
630 intel_de_write(dev_priv,
631 ICL_DSC0_PICTURE_PARAMETER_SET_4(pipe),
632 pps_val);
633 if (crtc_state->dsc.dsc_split)
634 intel_de_write(dev_priv,
635 ICL_DSC1_PICTURE_PARAMETER_SET_4(pipe),
636 pps_val);
637 }
638
639 /* Populate PICTURE_PARAMETER_SET_5 registers */
640 pps_val = 0;
641 pps_val |= DSC_SCALE_INC_INT(vdsc_cfg->scale_increment_interval) |
642 DSC_SCALE_DEC_INT(vdsc_cfg->scale_decrement_interval);
643 drm_info(&dev_priv->drm, "PPS5 = 0x%08x\n", pps_val);
644 if (!is_pipe_dsc(crtc_state)) {
645 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_5,
646 pps_val);
647 /*
648 * If 2 VDSC instances are needed, configure PPS for second
649 * VDSC
650 */
651 if (crtc_state->dsc.dsc_split)
652 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_5,
653 pps_val);
654 } else {
655 intel_de_write(dev_priv,
656 ICL_DSC0_PICTURE_PARAMETER_SET_5(pipe),
657 pps_val);
658 if (crtc_state->dsc.dsc_split)
659 intel_de_write(dev_priv,
660 ICL_DSC1_PICTURE_PARAMETER_SET_5(pipe),
661 pps_val);
662 }
663
664 /* Populate PICTURE_PARAMETER_SET_6 registers */
665 pps_val = 0;
666 pps_val |= DSC_INITIAL_SCALE_VALUE(vdsc_cfg->initial_scale_value) |
667 DSC_FIRST_LINE_BPG_OFFSET(vdsc_cfg->first_line_bpg_offset) |
668 DSC_FLATNESS_MIN_QP(vdsc_cfg->flatness_min_qp) |
669 DSC_FLATNESS_MAX_QP(vdsc_cfg->flatness_max_qp);
670 drm_info(&dev_priv->drm, "PPS6 = 0x%08x\n", pps_val);
671 if (!is_pipe_dsc(crtc_state)) {
672 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_6,
673 pps_val);
674 /*
675 * If 2 VDSC instances are needed, configure PPS for second
676 * VDSC
677 */
678 if (crtc_state->dsc.dsc_split)
679 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_6,
680 pps_val);
681 } else {
682 intel_de_write(dev_priv,
683 ICL_DSC0_PICTURE_PARAMETER_SET_6(pipe),
684 pps_val);
685 if (crtc_state->dsc.dsc_split)
686 intel_de_write(dev_priv,
687 ICL_DSC1_PICTURE_PARAMETER_SET_6(pipe),
688 pps_val);
689 }
690
691 /* Populate PICTURE_PARAMETER_SET_7 registers */
692 pps_val = 0;
693 pps_val |= DSC_SLICE_BPG_OFFSET(vdsc_cfg->slice_bpg_offset) |
694 DSC_NFL_BPG_OFFSET(vdsc_cfg->nfl_bpg_offset);
695 drm_info(&dev_priv->drm, "PPS7 = 0x%08x\n", pps_val);
696 if (!is_pipe_dsc(crtc_state)) {
697 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_7,
698 pps_val);
699 /*
700 * If 2 VDSC instances are needed, configure PPS for second
701 * VDSC
702 */
703 if (crtc_state->dsc.dsc_split)
704 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_7,
705 pps_val);
706 } else {
707 intel_de_write(dev_priv,
708 ICL_DSC0_PICTURE_PARAMETER_SET_7(pipe),
709 pps_val);
710 if (crtc_state->dsc.dsc_split)
711 intel_de_write(dev_priv,
712 ICL_DSC1_PICTURE_PARAMETER_SET_7(pipe),
713 pps_val);
714 }
715
716 /* Populate PICTURE_PARAMETER_SET_8 registers */
717 pps_val = 0;
718 pps_val |= DSC_FINAL_OFFSET(vdsc_cfg->final_offset) |
719 DSC_INITIAL_OFFSET(vdsc_cfg->initial_offset);
720 drm_info(&dev_priv->drm, "PPS8 = 0x%08x\n", pps_val);
721 if (!is_pipe_dsc(crtc_state)) {
722 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_8,
723 pps_val);
724 /*
725 * If 2 VDSC instances are needed, configure PPS for second
726 * VDSC
727 */
728 if (crtc_state->dsc.dsc_split)
729 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_8,
730 pps_val);
731 } else {
732 intel_de_write(dev_priv,
733 ICL_DSC0_PICTURE_PARAMETER_SET_8(pipe),
734 pps_val);
735 if (crtc_state->dsc.dsc_split)
736 intel_de_write(dev_priv,
737 ICL_DSC1_PICTURE_PARAMETER_SET_8(pipe),
738 pps_val);
739 }
740
741 /* Populate PICTURE_PARAMETER_SET_9 registers */
742 pps_val = 0;
743 pps_val |= DSC_RC_MODEL_SIZE(DSC_RC_MODEL_SIZE_CONST) |
744 DSC_RC_EDGE_FACTOR(DSC_RC_EDGE_FACTOR_CONST);
745 drm_info(&dev_priv->drm, "PPS9 = 0x%08x\n", pps_val);
746 if (!is_pipe_dsc(crtc_state)) {
747 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_9,
748 pps_val);
749 /*
750 * If 2 VDSC instances are needed, configure PPS for second
751 * VDSC
752 */
753 if (crtc_state->dsc.dsc_split)
754 intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_9,
755 pps_val);
756 } else {
757 intel_de_write(dev_priv,
758 ICL_DSC0_PICTURE_PARAMETER_SET_9(pipe),
759 pps_val);
760 if (crtc_state->dsc.dsc_split)
761 intel_de_write(dev_priv,
762 ICL_DSC1_PICTURE_PARAMETER_SET_9(pipe),
763 pps_val);
764 }
765
766 /* Populate PICTURE_PARAMETER_SET_10 registers */
767 pps_val = 0;
768 pps_val |= DSC_RC_QUANT_INC_LIMIT0(vdsc_cfg->rc_quant_incr_limit0) |
769 DSC_RC_QUANT_INC_LIMIT1(vdsc_cfg->rc_quant_incr_limit1) |
770 DSC_RC_TARGET_OFF_HIGH(DSC_RC_TGT_OFFSET_HI_CONST) |
771 DSC_RC_TARGET_OFF_LOW(DSC_RC_TGT_OFFSET_LO_CONST);
772 drm_info(&dev_priv->drm, "PPS10 = 0x%08x\n", pps_val);
773 if (!is_pipe_dsc(crtc_state)) {
774 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_10,
775 pps_val);
776 /*
777 * If 2 VDSC instances are needed, configure PPS for second
778 * VDSC
779 */
780 if (crtc_state->dsc.dsc_split)
781 intel_de_write(dev_priv,
782 DSCC_PICTURE_PARAMETER_SET_10, pps_val);
783 } else {
784 intel_de_write(dev_priv,
785 ICL_DSC0_PICTURE_PARAMETER_SET_10(pipe),
786 pps_val);
787 if (crtc_state->dsc.dsc_split)
788 intel_de_write(dev_priv,
789 ICL_DSC1_PICTURE_PARAMETER_SET_10(pipe),
790 pps_val);
791 }
792
793 /* Populate Picture parameter set 16 */
794 pps_val = 0;
795 pps_val |= DSC_SLICE_CHUNK_SIZE(vdsc_cfg->slice_chunk_size) |
796 DSC_SLICE_PER_LINE((vdsc_cfg->pic_width / num_vdsc_instances) /
797 vdsc_cfg->slice_width) |
798 DSC_SLICE_ROW_PER_FRAME(vdsc_cfg->pic_height /
799 vdsc_cfg->slice_height);
800 drm_info(&dev_priv->drm, "PPS16 = 0x%08x\n", pps_val);
801 if (!is_pipe_dsc(crtc_state)) {
802 intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_16,
803 pps_val);
804 /*
805 * If 2 VDSC instances are needed, configure PPS for second
806 * VDSC
807 */
808 if (crtc_state->dsc.dsc_split)
809 intel_de_write(dev_priv,
810 DSCC_PICTURE_PARAMETER_SET_16, pps_val);
811 } else {
812 intel_de_write(dev_priv,
813 ICL_DSC0_PICTURE_PARAMETER_SET_16(pipe),
814 pps_val);
815 if (crtc_state->dsc.dsc_split)
816 intel_de_write(dev_priv,
817 ICL_DSC1_PICTURE_PARAMETER_SET_16(pipe),
818 pps_val);
819 }
820
821 /* Populate the RC_BUF_THRESH registers */
822 memset(rc_buf_thresh_dword, 0, sizeof(rc_buf_thresh_dword));
823 for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++) {
824 rc_buf_thresh_dword[i / 4] |=
825 (u32)(vdsc_cfg->rc_buf_thresh[i] <<
826 BITS_PER_BYTE * (i % 4));
827 drm_info(&dev_priv->drm, " RC_BUF_THRESH%d = 0x%08x\n", i,
828 rc_buf_thresh_dword[i / 4]);
829 }
830 if (!is_pipe_dsc(crtc_state)) {
831 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0,
832 rc_buf_thresh_dword[0]);
833 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0_UDW,
834 rc_buf_thresh_dword[1]);
835 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1,
836 rc_buf_thresh_dword[2]);
837 intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1_UDW,
838 rc_buf_thresh_dword[3]);
839 if (crtc_state->dsc.dsc_split) {
840 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0,
841 rc_buf_thresh_dword[0]);
842 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0_UDW,
843 rc_buf_thresh_dword[1]);
844 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1,
845 rc_buf_thresh_dword[2]);
846 intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1_UDW,
847 rc_buf_thresh_dword[3]);
848 }
849 } else {
850 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0(pipe),
851 rc_buf_thresh_dword[0]);
852 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0_UDW(pipe),
853 rc_buf_thresh_dword[1]);
854 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1(pipe),
855 rc_buf_thresh_dword[2]);
856 intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1_UDW(pipe),
857 rc_buf_thresh_dword[3]);
858 if (crtc_state->dsc.dsc_split) {
859 intel_de_write(dev_priv,
860 ICL_DSC1_RC_BUF_THRESH_0(pipe),
861 rc_buf_thresh_dword[0]);
862 intel_de_write(dev_priv,
863 ICL_DSC1_RC_BUF_THRESH_0_UDW(pipe),
864 rc_buf_thresh_dword[1]);
865 intel_de_write(dev_priv,
866 ICL_DSC1_RC_BUF_THRESH_1(pipe),
867 rc_buf_thresh_dword[2]);
868 intel_de_write(dev_priv,
869 ICL_DSC1_RC_BUF_THRESH_1_UDW(pipe),
870 rc_buf_thresh_dword[3]);
871 }
872 }
873
874 /* Populate the RC_RANGE_PARAMETERS registers */
875 memset(rc_range_params_dword, 0, sizeof(rc_range_params_dword));
876 for (i = 0; i < DSC_NUM_BUF_RANGES; i++) {
877 rc_range_params_dword[i / 2] |=
878 (u32)(((vdsc_cfg->rc_range_params[i].range_bpg_offset <<
879 RC_BPG_OFFSET_SHIFT) |
880 (vdsc_cfg->rc_range_params[i].range_max_qp <<
881 RC_MAX_QP_SHIFT) |
882 (vdsc_cfg->rc_range_params[i].range_min_qp <<
883 RC_MIN_QP_SHIFT)) << 16 * (i % 2));
884 drm_info(&dev_priv->drm, " RC_RANGE_PARAM_%d = 0x%08x\n", i,
885 rc_range_params_dword[i / 2]);
886 }
887 if (!is_pipe_dsc(crtc_state)) {
888 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0,
889 rc_range_params_dword[0]);
890 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0_UDW,
891 rc_range_params_dword[1]);
892 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1,
893 rc_range_params_dword[2]);
894 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1_UDW,
895 rc_range_params_dword[3]);
896 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2,
897 rc_range_params_dword[4]);
898 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2_UDW,
899 rc_range_params_dword[5]);
900 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3,
901 rc_range_params_dword[6]);
902 intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3_UDW,
903 rc_range_params_dword[7]);
904 if (crtc_state->dsc.dsc_split) {
905 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_0,
906 rc_range_params_dword[0]);
907 intel_de_write(dev_priv,
908 DSCC_RC_RANGE_PARAMETERS_0_UDW,
909 rc_range_params_dword[1]);
910 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_1,
911 rc_range_params_dword[2]);
912 intel_de_write(dev_priv,
913 DSCC_RC_RANGE_PARAMETERS_1_UDW,
914 rc_range_params_dword[3]);
915 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_2,
916 rc_range_params_dword[4]);
917 intel_de_write(dev_priv,
918 DSCC_RC_RANGE_PARAMETERS_2_UDW,
919 rc_range_params_dword[5]);
920 intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_3,
921 rc_range_params_dword[6]);
922 intel_de_write(dev_priv,
923 DSCC_RC_RANGE_PARAMETERS_3_UDW,
924 rc_range_params_dword[7]);
925 }
926 } else {
927 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_0(pipe),
928 rc_range_params_dword[0]);
929 intel_de_write(dev_priv,
930 ICL_DSC0_RC_RANGE_PARAMETERS_0_UDW(pipe),
931 rc_range_params_dword[1]);
932 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_1(pipe),
933 rc_range_params_dword[2]);
934 intel_de_write(dev_priv,
935 ICL_DSC0_RC_RANGE_PARAMETERS_1_UDW(pipe),
936 rc_range_params_dword[3]);
937 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_2(pipe),
938 rc_range_params_dword[4]);
939 intel_de_write(dev_priv,
940 ICL_DSC0_RC_RANGE_PARAMETERS_2_UDW(pipe),
941 rc_range_params_dword[5]);
942 intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_3(pipe),
943 rc_range_params_dword[6]);
944 intel_de_write(dev_priv,
945 ICL_DSC0_RC_RANGE_PARAMETERS_3_UDW(pipe),
946 rc_range_params_dword[7]);
947 if (crtc_state->dsc.dsc_split) {
948 intel_de_write(dev_priv,
949 ICL_DSC1_RC_RANGE_PARAMETERS_0(pipe),
950 rc_range_params_dword[0]);
951 intel_de_write(dev_priv,
952 ICL_DSC1_RC_RANGE_PARAMETERS_0_UDW(pipe),
953 rc_range_params_dword[1]);
954 intel_de_write(dev_priv,
955 ICL_DSC1_RC_RANGE_PARAMETERS_1(pipe),
956 rc_range_params_dword[2]);
957 intel_de_write(dev_priv,
958 ICL_DSC1_RC_RANGE_PARAMETERS_1_UDW(pipe),
959 rc_range_params_dword[3]);
960 intel_de_write(dev_priv,
961 ICL_DSC1_RC_RANGE_PARAMETERS_2(pipe),
962 rc_range_params_dword[4]);
963 intel_de_write(dev_priv,
964 ICL_DSC1_RC_RANGE_PARAMETERS_2_UDW(pipe),
965 rc_range_params_dword[5]);
966 intel_de_write(dev_priv,
967 ICL_DSC1_RC_RANGE_PARAMETERS_3(pipe),
968 rc_range_params_dword[6]);
969 intel_de_write(dev_priv,
970 ICL_DSC1_RC_RANGE_PARAMETERS_3_UDW(pipe),
971 rc_range_params_dword[7]);
972 }
973 }
974}
975
976void intel_dsc_get_config(struct intel_encoder *encoder,
977 struct intel_crtc_state *crtc_state)
978{
979 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
980 struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
981 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
982 enum pipe pipe = crtc->pipe;
983 enum intel_display_power_domain power_domain;
984 intel_wakeref_t wakeref;
985 u32 dss_ctl1, dss_ctl2, val;
986
987 if (!intel_dsc_source_support(encoder, crtc_state))
988 return;
989
990 power_domain = intel_dsc_power_domain(crtc_state);
991
992 wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
993 if (!wakeref)
994 return;
995
996 if (!is_pipe_dsc(crtc_state)) {
997 dss_ctl1 = intel_de_read(dev_priv, DSS_CTL1);
998 dss_ctl2 = intel_de_read(dev_priv, DSS_CTL2);
999 } else {
1000 dss_ctl1 = intel_de_read(dev_priv, ICL_PIPE_DSS_CTL1(pipe));
1001 dss_ctl2 = intel_de_read(dev_priv, ICL_PIPE_DSS_CTL2(pipe));
1002 }
1003
1004 crtc_state->dsc.compression_enable = dss_ctl2 & LEFT_BRANCH_VDSC_ENABLE;
1005 if (!crtc_state->dsc.compression_enable)
1006 goto out;
1007
1008 crtc_state->dsc.dsc_split = (dss_ctl2 & RIGHT_BRANCH_VDSC_ENABLE) &&
1009 (dss_ctl1 & JOINER_ENABLE);
1010
1011 /* FIXME: add more state readout as needed */
1012
1013 /* PPS1 */
1014 if (!is_pipe_dsc(crtc_state))
1015 val = intel_de_read(dev_priv, DSCA_PICTURE_PARAMETER_SET_1);
1016 else
1017 val = intel_de_read(dev_priv,
1018 ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe));
1019 vdsc_cfg->bits_per_pixel = val;
1020 crtc_state->dsc.compressed_bpp = vdsc_cfg->bits_per_pixel >> 4;
1021out:
1022 intel_display_power_put(dev_priv, power_domain, wakeref);
1023}
1024
1025static void intel_dsc_dsi_pps_write(struct intel_encoder *encoder,
1026 const struct intel_crtc_state *crtc_state)
1027{
1028 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
1029 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1030 struct mipi_dsi_device *dsi;
1031 struct drm_dsc_picture_parameter_set pps;
1032 enum port port;
1033
1034 drm_dsc_pps_payload_pack(&pps, vdsc_cfg);
1035
1036 for_each_dsi_port(port, intel_dsi->ports) {
1037 dsi = intel_dsi->dsi_hosts[port]->device;
1038
1039 mipi_dsi_picture_parameter_set(dsi, &pps);
1040 mipi_dsi_compression_mode(dsi, true);
1041 }
1042}
1043
1044static void intel_dsc_dp_pps_write(struct intel_encoder *encoder,
1045 const struct intel_crtc_state *crtc_state)
1046{
1047 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1048 struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
1049 const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
1050 struct drm_dsc_pps_infoframe dp_dsc_pps_sdp;
1051
1052 /* Prepare DP SDP PPS header as per DP 1.4 spec, Table 2-123 */
1053 drm_dsc_dp_pps_header_init(&dp_dsc_pps_sdp.pps_header);
1054
1055 /* Fill the PPS payload bytes as per DSC spec 1.2 Table 4-1 */
1056 drm_dsc_pps_payload_pack(&dp_dsc_pps_sdp.pps_payload, vdsc_cfg);
1057
1058 dig_port->write_infoframe(encoder, crtc_state,
1059 DP_SDP_PPS, &dp_dsc_pps_sdp,
1060 sizeof(dp_dsc_pps_sdp));
1061}
1062
1063void intel_dsc_enable(struct intel_encoder *encoder,
1064 const struct intel_crtc_state *crtc_state)
1065{
1066 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
1067 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1068 enum pipe pipe = crtc->pipe;
1069 i915_reg_t dss_ctl1_reg, dss_ctl2_reg;
1070 u32 dss_ctl1_val = 0;
1071 u32 dss_ctl2_val = 0;
1072
1073 if (!crtc_state->dsc.compression_enable)
1074 return;
1075
1076 /* Enable Power wells for VDSC/joining */
1077 intel_display_power_get(dev_priv,
1078 intel_dsc_power_domain(crtc_state));
1079
1080 intel_dsc_pps_configure(encoder, crtc_state);
1081
1082 if (encoder->type == INTEL_OUTPUT_DSI)
1083 intel_dsc_dsi_pps_write(encoder, crtc_state);
1084 else
1085 intel_dsc_dp_pps_write(encoder, crtc_state);
1086
1087 if (!is_pipe_dsc(crtc_state)) {
1088 dss_ctl1_reg = DSS_CTL1;
1089 dss_ctl2_reg = DSS_CTL2;
1090 } else {
1091 dss_ctl1_reg = ICL_PIPE_DSS_CTL1(pipe);
1092 dss_ctl2_reg = ICL_PIPE_DSS_CTL2(pipe);
1093 }
1094 dss_ctl2_val |= LEFT_BRANCH_VDSC_ENABLE;
1095 if (crtc_state->dsc.dsc_split) {
1096 dss_ctl2_val |= RIGHT_BRANCH_VDSC_ENABLE;
1097 dss_ctl1_val |= JOINER_ENABLE;
1098 }
1099 intel_de_write(dev_priv, dss_ctl1_reg, dss_ctl1_val);
1100 intel_de_write(dev_priv, dss_ctl2_reg, dss_ctl2_val);
1101}
1102
1103void intel_dsc_disable(const struct intel_crtc_state *old_crtc_state)
1104{
1105 struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
1106 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1107 enum pipe pipe = crtc->pipe;
1108 i915_reg_t dss_ctl1_reg, dss_ctl2_reg;
1109 u32 dss_ctl1_val = 0, dss_ctl2_val = 0;
1110
1111 if (!old_crtc_state->dsc.compression_enable)
1112 return;
1113
1114 if (!is_pipe_dsc(old_crtc_state)) {
1115 dss_ctl1_reg = DSS_CTL1;
1116 dss_ctl2_reg = DSS_CTL2;
1117 } else {
1118 dss_ctl1_reg = ICL_PIPE_DSS_CTL1(pipe);
1119 dss_ctl2_reg = ICL_PIPE_DSS_CTL2(pipe);
1120 }
1121 dss_ctl1_val = intel_de_read(dev_priv, dss_ctl1_reg);
1122 if (dss_ctl1_val & JOINER_ENABLE)
1123 dss_ctl1_val &= ~JOINER_ENABLE;
1124 intel_de_write(dev_priv, dss_ctl1_reg, dss_ctl1_val);
1125
1126 dss_ctl2_val = intel_de_read(dev_priv, dss_ctl2_reg);
1127 if (dss_ctl2_val & LEFT_BRANCH_VDSC_ENABLE ||
1128 dss_ctl2_val & RIGHT_BRANCH_VDSC_ENABLE)
1129 dss_ctl2_val &= ~(LEFT_BRANCH_VDSC_ENABLE |
1130 RIGHT_BRANCH_VDSC_ENABLE);
1131 intel_de_write(dev_priv, dss_ctl2_reg, dss_ctl2_val);
1132
1133 /* Disable Power wells for VDSC/joining */
1134 intel_display_power_put_unchecked(dev_priv,
1135 intel_dsc_power_domain(old_crtc_state));
1136}