1/*
2 * Copyright 2021 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
27#include "dc_bios_types.h"
28#include "dcn30/dcn30_dio_stream_encoder.h"
29#include "dcn32_dio_stream_encoder.h"
30#include "reg_helper.h"
31#include "hw_shared.h"
32#include "link.h"
33#include "dpcd_defs.h"
34
35#define DC_LOGGER \
36 enc1->base.ctx->logger
37
38#define REG(reg)\
39 (enc1->regs->reg)
40
41#undef FN
42#define FN(reg_name, field_name) \
43 enc1->se_shift->field_name, enc1->se_mask->field_name
44
45#define VBI_LINE_0 0
46#define HDMI_CLOCK_CHANNEL_RATE_MORE_340M 340000
47
48#define CTX \
49 enc1->base.ctx
50
51
52
53static void enc32_dp_set_odm_combine(
54 struct stream_encoder *enc,
55 bool odm_combine)
56{
57 struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
58
59 REG_UPDATE(DP_PIXEL_FORMAT, DP_PIXEL_PER_CYCLE_PROCESSING_MODE, odm_combine ? 1 : 0);
60}
61
62/* setup stream encoder in dvi mode */
63static void enc32_stream_encoder_dvi_set_stream_attribute(
64 struct stream_encoder *enc,
65 struct dc_crtc_timing *crtc_timing,
66 bool is_dual_link)
67{
68 struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
69
70 if (!enc->ctx->dc->debug.avoid_vbios_exec_table) {
71 struct bp_encoder_control cntl = {0};
72
73 cntl.action = ENCODER_CONTROL_SETUP;
74 cntl.engine_id = enc1->base.id;
75 cntl.signal = is_dual_link ?
76 SIGNAL_TYPE_DVI_DUAL_LINK : SIGNAL_TYPE_DVI_SINGLE_LINK;
77 cntl.enable_dp_audio = false;
78 cntl.pixel_clock = crtc_timing->pix_clk_100hz / 10;
79 cntl.lanes_number = (is_dual_link) ? LANE_COUNT_EIGHT : LANE_COUNT_FOUR;
80
81 if (enc1->base.bp->funcs->encoder_control(
82 enc1->base.bp, &cntl) != BP_RESULT_OK)
83 return;
84
85 } else {
86
87 //Set pattern for clock channel, default vlue 0x63 does not work
88 REG_UPDATE(DIG_CLOCK_PATTERN, DIG_CLOCK_PATTERN, 0x1F);
89
90 //DIG_BE_TMDS_DVI_MODE : TMDS-DVI mode is already set in link_encoder_setup
91
92 //DIG_SOURCE_SELECT is already set in dig_connect_to_otg
93
94 /* DIG_START is removed from the register spec */
95 }
96
97 ASSERT(crtc_timing->pixel_encoding == PIXEL_ENCODING_RGB);
98 ASSERT(crtc_timing->display_color_depth == COLOR_DEPTH_888);
99 enc1_stream_encoder_set_stream_attribute_helper(enc1, crtc_timing);
100}
101
102/* setup stream encoder in hdmi mode */
103static void enc32_stream_encoder_hdmi_set_stream_attribute(
104 struct stream_encoder *enc,
105 struct dc_crtc_timing *crtc_timing,
106 int actual_pix_clk_khz,
107 bool enable_audio)
108{
109 struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
110
111 if (!enc->ctx->dc->debug.avoid_vbios_exec_table) {
112 struct bp_encoder_control cntl = {0};
113
114 cntl.action = ENCODER_CONTROL_SETUP;
115 cntl.engine_id = enc1->base.id;
116 cntl.signal = SIGNAL_TYPE_HDMI_TYPE_A;
117 cntl.enable_dp_audio = enable_audio;
118 cntl.pixel_clock = actual_pix_clk_khz;
119 cntl.lanes_number = LANE_COUNT_FOUR;
120
121 if (enc1->base.bp->funcs->encoder_control(
122 enc1->base.bp, &cntl) != BP_RESULT_OK)
123 return;
124
125 } else {
126
127 //Set pattern for clock channel, default vlue 0x63 does not work
128 REG_UPDATE(DIG_CLOCK_PATTERN, DIG_CLOCK_PATTERN, 0x1F);
129
130 //DIG_BE_TMDS_HDMI_MODE : TMDS-HDMI mode is already set in link_encoder_setup
131
132 //DIG_SOURCE_SELECT is already set in dig_connect_to_otg
133
134 /* DIG_START is removed from the register spec */
135 }
136
137 /* Configure pixel encoding */
138 enc1_stream_encoder_set_stream_attribute_helper(enc1, crtc_timing);
139
140 /* setup HDMI engine */
141 REG_UPDATE_6(HDMI_CONTROL,
142 HDMI_PACKET_GEN_VERSION, 1,
143 HDMI_KEEPOUT_MODE, 1,
144 HDMI_DEEP_COLOR_ENABLE, 0,
145 HDMI_DATA_SCRAMBLE_EN, 0,
146 HDMI_NO_EXTRA_NULL_PACKET_FILLED, 1,
147 HDMI_CLOCK_CHANNEL_RATE, 0);
148
149 /* Configure color depth */
150 switch (crtc_timing->display_color_depth) {
151 case COLOR_DEPTH_888:
152 REG_UPDATE(HDMI_CONTROL, HDMI_DEEP_COLOR_DEPTH, 0);
153 break;
154 case COLOR_DEPTH_101010:
155 if (crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR422) {
156 REG_UPDATE_2(HDMI_CONTROL,
157 HDMI_DEEP_COLOR_DEPTH, 1,
158 HDMI_DEEP_COLOR_ENABLE, 0);
159 } else {
160 REG_UPDATE_2(HDMI_CONTROL,
161 HDMI_DEEP_COLOR_DEPTH, 1,
162 HDMI_DEEP_COLOR_ENABLE, 1);
163 }
164 break;
165 case COLOR_DEPTH_121212:
166 if (crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR422) {
167 REG_UPDATE_2(HDMI_CONTROL,
168 HDMI_DEEP_COLOR_DEPTH, 2,
169 HDMI_DEEP_COLOR_ENABLE, 0);
170 } else {
171 REG_UPDATE_2(HDMI_CONTROL,
172 HDMI_DEEP_COLOR_DEPTH, 2,
173 HDMI_DEEP_COLOR_ENABLE, 1);
174 }
175 break;
176 case COLOR_DEPTH_161616:
177 REG_UPDATE_2(HDMI_CONTROL,
178 HDMI_DEEP_COLOR_DEPTH, 3,
179 HDMI_DEEP_COLOR_ENABLE, 1);
180 break;
181 default:
182 break;
183 }
184
185 if (actual_pix_clk_khz >= HDMI_CLOCK_CHANNEL_RATE_MORE_340M) {
186 /* enable HDMI data scrambler
187 * HDMI_CLOCK_CHANNEL_RATE_MORE_340M
188 * Clock channel frequency is 1/4 of character rate.
189 */
190 REG_UPDATE_2(HDMI_CONTROL,
191 HDMI_DATA_SCRAMBLE_EN, 1,
192 HDMI_CLOCK_CHANNEL_RATE, 1);
193 } else if (crtc_timing->flags.LTE_340MCSC_SCRAMBLE) {
194
195 /* TODO: New feature for DCE11, still need to implement */
196
197 /* enable HDMI data scrambler
198 * HDMI_CLOCK_CHANNEL_FREQ_EQUAL_TO_CHAR_RATE
199 * Clock channel frequency is the same
200 * as character rate
201 */
202 REG_UPDATE_2(HDMI_CONTROL,
203 HDMI_DATA_SCRAMBLE_EN, 1,
204 HDMI_CLOCK_CHANNEL_RATE, 0);
205 }
206
207
208 /* Enable transmission of General Control packet on every frame */
209 REG_UPDATE_3(HDMI_VBI_PACKET_CONTROL,
210 HDMI_GC_CONT, 1,
211 HDMI_GC_SEND, 1,
212 HDMI_NULL_SEND, 1);
213
214 /* Disable Audio Content Protection packet transmission */
215 REG_UPDATE(HDMI_VBI_PACKET_CONTROL, HDMI_ACP_SEND, 0);
216
217 /* following belongs to audio */
218 /* Enable Audio InfoFrame packet transmission. */
219 REG_UPDATE(HDMI_INFOFRAME_CONTROL0, HDMI_AUDIO_INFO_SEND, 1);
220
221 /* update double-buffered AUDIO_INFO registers immediately */
222 ASSERT(enc->afmt);
223 enc->afmt->funcs->audio_info_immediate_update(enc->afmt);
224
225 /* Select line number on which to send Audio InfoFrame packets */
226 REG_UPDATE(HDMI_INFOFRAME_CONTROL1, HDMI_AUDIO_INFO_LINE,
227 VBI_LINE_0 + 2);
228
229 /* set HDMI GC AVMUTE */
230 REG_UPDATE(HDMI_GC, HDMI_GC_AVMUTE, 0);
231}
232
233
234
235static bool is_two_pixels_per_containter(const struct dc_crtc_timing *timing)
236{
237 bool two_pix = timing->pixel_encoding == PIXEL_ENCODING_YCBCR420;
238
239 two_pix = two_pix || (timing->flags.DSC && timing->pixel_encoding == PIXEL_ENCODING_YCBCR422
240 && !timing->dsc_cfg.ycbcr422_simple);
241 return two_pix;
242}
243
244static bool is_h_timing_divisible_by_2(const struct dc_crtc_timing *timing)
245{
246 /* math borrowed from function of same name in inc/resource
247 * checks if h_timing is divisible by 2
248 */
249
250 bool divisible = false;
251 uint16_t h_blank_start = 0;
252 uint16_t h_blank_end = 0;
253
254 if (timing) {
255 h_blank_start = timing->h_total - timing->h_front_porch;
256 h_blank_end = h_blank_start - timing->h_addressable;
257
258 /* HTOTAL, Hblank start/end, and Hsync start/end all must be
259 * divisible by 2 in order for the horizontal timing params
260 * to be considered divisible by 2. Hsync start is always 0.
261 */
262 divisible = (timing->h_total % 2 == 0) &&
263 (h_blank_start % 2 == 0) &&
264 (h_blank_end % 2 == 0) &&
265 (timing->h_sync_width % 2 == 0);
266 }
267 return divisible;
268}
269
270static bool is_dp_dig_pixel_rate_div_policy(struct dc *dc, const struct dc_crtc_timing *timing)
271{
272 /* should be functionally the same as dcn32_is_dp_dig_pixel_rate_div_policy for DP encoders*/
273 return is_h_timing_divisible_by_2(timing) &&
274 dc->debug.enable_dp_dig_pixel_rate_div_policy;
275}
276
277void enc32_stream_encoder_dp_unblank(
278 struct dc_link *link,
279 struct stream_encoder *enc,
280 const struct encoder_unblank_param *param)
281{
282 struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
283 struct dc *dc = enc->ctx->dc;
284
285 if (param->link_settings.link_rate != LINK_RATE_UNKNOWN) {
286 uint32_t n_vid = 0x8000;
287 uint32_t m_vid;
288 uint32_t n_multiply = 0;
289 uint32_t pix_per_cycle = 0;
290 uint64_t m_vid_l = n_vid;
291
292 /* YCbCr 4:2:0 : Computed VID_M will be 2X the input rate */
293 if (is_two_pixels_per_containter(timing: &param->timing) || param->opp_cnt > 1
294 || is_dp_dig_pixel_rate_div_policy(dc, timing: &param->timing)) {
295 /*this logic should be the same in get_pixel_clock_parameters() */
296 n_multiply = 1;
297 pix_per_cycle = 1;
298 }
299 /* M / N = Fstream / Flink
300 * m_vid / n_vid = pixel rate / link rate
301 */
302
303 m_vid_l *= param->timing.pix_clk_100hz / 10;
304 m_vid_l = div_u64(dividend: m_vid_l,
305 divisor: param->link_settings.link_rate
306 * LINK_RATE_REF_FREQ_IN_KHZ);
307
308 m_vid = (uint32_t) m_vid_l;
309
310 /* enable auto measurement */
311
312 REG_UPDATE(DP_VID_TIMING, DP_VID_M_N_GEN_EN, 0);
313
314 /* auto measurement need 1 full 0x8000 symbol cycle to kick in,
315 * therefore program initial value for Mvid and Nvid
316 */
317
318 REG_UPDATE(DP_VID_N, DP_VID_N, n_vid);
319
320 REG_UPDATE(DP_VID_M, DP_VID_M, m_vid);
321
322 REG_UPDATE_2(DP_VID_TIMING,
323 DP_VID_M_N_GEN_EN, 1,
324 DP_VID_N_MUL, n_multiply);
325
326 REG_UPDATE(DP_PIXEL_FORMAT,
327 DP_PIXEL_PER_CYCLE_PROCESSING_MODE,
328 pix_per_cycle);
329 }
330
331 /* make sure stream is disabled before resetting steer fifo */
332 REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, false);
333 REG_WAIT(DP_VID_STREAM_CNTL, DP_VID_STREAM_STATUS, 0, 10, 5000);
334
335 /* DIG_START is removed from the register spec */
336
337 /* switch DP encoder to CRTC data, but reset it the fifo first. It may happen
338 * that it overflows during mode transition, and sometimes doesn't recover.
339 */
340 REG_UPDATE(DP_STEER_FIFO, DP_STEER_FIFO_RESET, 1);
341 udelay(10);
342
343 REG_UPDATE(DP_STEER_FIFO, DP_STEER_FIFO_RESET, 0);
344
345 /* DIG Resync FIFO now needs to be explicitly enabled
346 */
347 // TODO: Confirm if we need to wait for DIG_SYMCLK_FE_ON
348 REG_WAIT(DIG_FE_CNTL, DIG_SYMCLK_FE_ON, 1, 10, 5000);
349
350 /* read start level = 0 will bring underflow / overflow and DIG_FIFO_ERROR = 1
351 * so set it to 1/2 full = 7 before reset as suggested by hardware team.
352 */
353 REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_READ_START_LEVEL, 0x7);
354
355 REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_RESET, 1);
356
357 REG_WAIT(DIG_FIFO_CTRL0, DIG_FIFO_RESET_DONE, 1, 10, 5000);
358
359 REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_RESET, 0);
360
361 REG_WAIT(DIG_FIFO_CTRL0, DIG_FIFO_RESET_DONE, 0, 10, 5000);
362
363 REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_ENABLE, 1);
364
365 /* wait 100us for DIG/DP logic to prime
366 * (i.e. a few video lines)
367 */
368 udelay(100);
369
370 /* the hardware would start sending video at the start of the next DP
371 * frame (i.e. rising edge of the vblank).
372 * NOTE: We used to program DP_VID_STREAM_DIS_DEFER = 2 here, but this
373 * register has no effect on enable transition! HW always guarantees
374 * VID_STREAM enable at start of next frame, and this is not
375 * programmable
376 */
377
378 REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, true);
379
380 link->dc->link_srv->dp_trace_source_sequence(link, DPCD_SOURCE_SEQ_AFTER_ENABLE_DP_VID_STREAM);
381}
382
383/* Set DSC-related configuration.
384 * dsc_mode: 0 disables DSC, other values enable DSC in specified format
385 * sc_bytes_per_pixel: DP_DSC_BYTES_PER_PIXEL removed in DCN32
386 * dsc_slice_width: DP_DSC_SLICE_WIDTH removed in DCN32
387 */
388static void enc32_dp_set_dsc_config(struct stream_encoder *enc,
389 enum optc_dsc_mode dsc_mode,
390 uint32_t dsc_bytes_per_pixel,
391 uint32_t dsc_slice_width)
392{
393 struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
394
395 REG_UPDATE(DP_DSC_CNTL, DP_DSC_MODE, dsc_mode == OPTC_DSC_DISABLED ? 0 : 1);
396}
397
398/* this function read dsc related register fields to be logged later in dcn10_log_hw_state
399 * into a dcn_dsc_state struct.
400 */
401static void enc32_read_state(struct stream_encoder *enc, struct enc_state *s)
402{
403 struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
404
405 //if dsc is enabled, continue to read
406 REG_GET(DP_DSC_CNTL, DP_DSC_MODE, &s->dsc_mode);
407 if (s->dsc_mode) {
408 REG_GET(DP_GSP11_CNTL, DP_SEC_GSP11_LINE_NUM, &s->sec_gsp_pps_line_num);
409
410 REG_GET(DP_MSA_VBID_MISC, DP_VBID6_LINE_REFERENCE, &s->vbid6_line_reference);
411 REG_GET(DP_MSA_VBID_MISC, DP_VBID6_LINE_NUM, &s->vbid6_line_num);
412
413 REG_GET(DP_GSP11_CNTL, DP_SEC_GSP11_ENABLE, &s->sec_gsp_pps_enable);
414 REG_GET(DP_SEC_CNTL, DP_SEC_STREAM_ENABLE, &s->sec_stream_enable);
415 }
416}
417
418static void enc32_set_dig_input_mode(struct stream_encoder *enc, unsigned int pix_per_container)
419{
420 struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
421
422 /* The naming of this field is confusing, what it means is the output mode of otg, which
423 * is the input mode of the dig
424 */
425 REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_OUTPUT_PIXEL_MODE, pix_per_container == 2 ? 0x1 : 0x0);
426}
427
428static void enc32_reset_fifo(struct stream_encoder *enc, bool reset)
429{
430 struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
431 uint32_t reset_val = reset ? 1 : 0;
432 uint32_t is_symclk_on;
433
434 REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_RESET, reset_val);
435 REG_GET(DIG_FE_CNTL, DIG_SYMCLK_FE_ON, &is_symclk_on);
436
437 if (is_symclk_on)
438 REG_WAIT(DIG_FIFO_CTRL0, DIG_FIFO_RESET_DONE, reset_val, 10, 5000);
439 else
440 udelay(10);
441}
442
443void enc32_enable_fifo(struct stream_encoder *enc)
444{
445 struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
446
447 REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_READ_START_LEVEL, 0x7);
448
449 enc32_reset_fifo(enc, reset: true);
450 enc32_reset_fifo(enc, reset: false);
451
452 REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_ENABLE, 1);
453}
454
455static const struct stream_encoder_funcs dcn32_str_enc_funcs = {
456 .dp_set_odm_combine =
457 enc32_dp_set_odm_combine,
458 .dp_set_stream_attribute =
459 enc2_stream_encoder_dp_set_stream_attribute,
460 .hdmi_set_stream_attribute =
461 enc32_stream_encoder_hdmi_set_stream_attribute,
462 .dvi_set_stream_attribute =
463 enc32_stream_encoder_dvi_set_stream_attribute,
464 .set_throttled_vcp_size =
465 enc1_stream_encoder_set_throttled_vcp_size,
466 .update_hdmi_info_packets =
467 enc3_stream_encoder_update_hdmi_info_packets,
468 .stop_hdmi_info_packets =
469 enc3_stream_encoder_stop_hdmi_info_packets,
470 .update_dp_info_packets_sdp_line_num =
471 enc3_stream_encoder_update_dp_info_packets_sdp_line_num,
472 .update_dp_info_packets =
473 enc3_stream_encoder_update_dp_info_packets,
474 .stop_dp_info_packets =
475 enc1_stream_encoder_stop_dp_info_packets,
476 .dp_blank =
477 enc1_stream_encoder_dp_blank,
478 .dp_unblank =
479 enc32_stream_encoder_dp_unblank,
480 .audio_mute_control = enc3_audio_mute_control,
481
482 .dp_audio_setup = enc3_se_dp_audio_setup,
483 .dp_audio_enable = enc3_se_dp_audio_enable,
484 .dp_audio_disable = enc1_se_dp_audio_disable,
485
486 .hdmi_audio_setup = enc3_se_hdmi_audio_setup,
487 .hdmi_audio_disable = enc1_se_hdmi_audio_disable,
488 .setup_stereo_sync = enc1_setup_stereo_sync,
489 .set_avmute = enc1_stream_encoder_set_avmute,
490 .dig_connect_to_otg = enc1_dig_connect_to_otg,
491 .dig_source_otg = enc1_dig_source_otg,
492
493 .dp_get_pixel_format = enc1_stream_encoder_dp_get_pixel_format,
494
495 .enc_read_state = enc32_read_state,
496 .dp_set_dsc_config = enc32_dp_set_dsc_config,
497 .dp_set_dsc_pps_info_packet = enc3_dp_set_dsc_pps_info_packet,
498 .set_dynamic_metadata = enc2_set_dynamic_metadata,
499 .hdmi_reset_stream_attribute = enc1_reset_hdmi_stream_attribute,
500
501 .set_input_mode = enc32_set_dig_input_mode,
502 .enable_fifo = enc32_enable_fifo,
503};
504
505void dcn32_dio_stream_encoder_construct(
506 struct dcn10_stream_encoder *enc1,
507 struct dc_context *ctx,
508 struct dc_bios *bp,
509 enum engine_id eng_id,
510 struct vpg *vpg,
511 struct afmt *afmt,
512 const struct dcn10_stream_enc_registers *regs,
513 const struct dcn10_stream_encoder_shift *se_shift,
514 const struct dcn10_stream_encoder_mask *se_mask)
515{
516 enc1->base.funcs = &dcn32_str_enc_funcs;
517 enc1->base.ctx = ctx;
518 enc1->base.id = eng_id;
519 enc1->base.bp = bp;
520 enc1->base.vpg = vpg;
521 enc1->base.afmt = afmt;
522 enc1->regs = regs;
523 enc1->se_shift = se_shift;
524 enc1->se_mask = se_mask;
525 enc1->base.stream_enc_inst = vpg->inst;
526}
527
528

source code of linux/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.c