1 /*
2 * Copyright 2023 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 /* FILE POLICY AND INTENDED USAGE:
27 * This file owns the programming sequence of stream's dpms state associated
28 * with the link and link's enable/disable sequences as result of the stream's
29 * dpms state change.
30 *
31 * TODO - The reason link owns stream's dpms programming sequence is
32 * because dpms programming sequence is highly dependent on underlying signal
33 * specific link protocols. This unfortunately causes link to own a portion of
34 * stream state programming sequence. This creates a gray area where the
35 * boundary between link and stream is not clearly defined.
36 */
37
38 #include "link_dpms.h"
39 #include "link_hwss.h"
40 #include "link_validation.h"
41 #include "accessories/link_dp_trace.h"
42 #include "protocols/link_dpcd.h"
43 #include "protocols/link_ddc.h"
44 #include "protocols/link_hpd.h"
45 #include "protocols/link_dp_phy.h"
46 #include "protocols/link_dp_capability.h"
47 #include "protocols/link_dp_training.h"
48 #include "protocols/link_edp_panel_control.h"
49 #include "protocols/link_dp_dpia_bw.h"
50
51 #include "dm_helpers.h"
52 #include "link_enc_cfg.h"
53 #include "resource.h"
54 #include "dsc.h"
55 #include "dccg.h"
56 #include "clk_mgr.h"
57 #include "atomfirmware.h"
58 #define DC_LOGGER \
59 dc_logger
60 #define DC_LOGGER_INIT(logger) \
61 struct dal_logger *dc_logger = logger
62
63 #define LINK_INFO(...) \
64 DC_LOG_HW_HOTPLUG( \
65 __VA_ARGS__)
66
67 #define RETIMER_REDRIVER_INFO(...) \
68 DC_LOG_RETIMER_REDRIVER( \
69 __VA_ARGS__)
70 #include "dc/dcn30/dcn30_vpg.h"
71
72 #define MAX_MTP_SLOT_COUNT 64
73 #define LINK_TRAINING_ATTEMPTS 4
74 #define PEAK_FACTOR_X1000 1006
75
link_blank_all_dp_displays(struct dc * dc)76 void link_blank_all_dp_displays(struct dc *dc)
77 {
78 unsigned int i;
79 uint8_t dpcd_power_state = '\0';
80 enum dc_status status = DC_ERROR_UNEXPECTED;
81
82 for (i = 0; i < dc->link_count; i++) {
83 if ((dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT) ||
84 (dc->links[i]->priv == NULL) || (dc->links[i]->local_sink == NULL))
85 continue;
86
87 /* DP 2.0 spec requires that we read LTTPR caps first */
88 dp_retrieve_lttpr_cap(dc->links[i]);
89 /* if any of the displays are lit up turn them off */
90 status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
91 &dpcd_power_state, sizeof(dpcd_power_state));
92
93 if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0)
94 link_blank_dp_stream(dc->links[i], true);
95 }
96
97 }
98
link_blank_all_edp_displays(struct dc * dc)99 void link_blank_all_edp_displays(struct dc *dc)
100 {
101 unsigned int i;
102 uint8_t dpcd_power_state = '\0';
103 enum dc_status status = DC_ERROR_UNEXPECTED;
104
105 for (i = 0; i < dc->link_count; i++) {
106 if ((dc->links[i]->connector_signal != SIGNAL_TYPE_EDP) ||
107 (!dc->links[i]->edp_sink_present))
108 continue;
109
110 /* if any of the displays are lit up turn them off */
111 status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
112 &dpcd_power_state, sizeof(dpcd_power_state));
113
114 if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0)
115 link_blank_dp_stream(dc->links[i], true);
116 }
117 }
118
link_blank_dp_stream(struct dc_link * link,bool hw_init)119 void link_blank_dp_stream(struct dc_link *link, bool hw_init)
120 {
121 unsigned int j;
122 struct dc *dc = link->ctx->dc;
123 enum signal_type signal = link->connector_signal;
124
125 if ((signal == SIGNAL_TYPE_EDP) ||
126 (signal == SIGNAL_TYPE_DISPLAY_PORT)) {
127 if (link->ep_type == DISPLAY_ENDPOINT_PHY &&
128 link->link_enc->funcs->get_dig_frontend &&
129 link->link_enc->funcs->is_dig_enabled(link->link_enc)) {
130 unsigned int fe = link->link_enc->funcs->get_dig_frontend(link->link_enc);
131
132 if (fe != ENGINE_ID_UNKNOWN)
133 for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
134 if (fe == dc->res_pool->stream_enc[j]->id) {
135 dc->res_pool->stream_enc[j]->funcs->dp_blank(link,
136 dc->res_pool->stream_enc[j]);
137 break;
138 }
139 }
140 }
141
142 if ((!link->wa_flags.dp_keep_receiver_powered) || hw_init)
143 dpcd_write_rx_power_ctrl(link, false);
144 }
145 }
146
link_set_all_streams_dpms_off_for_link(struct dc_link * link)147 void link_set_all_streams_dpms_off_for_link(struct dc_link *link)
148 {
149 struct pipe_ctx *pipes[MAX_PIPES];
150 struct dc_state *state = link->dc->current_state;
151 uint8_t count;
152 int i;
153 struct dc_stream_update stream_update;
154 bool dpms_off = true;
155 struct link_resource link_res = {0};
156
157 memset(&stream_update, 0, sizeof(stream_update));
158 stream_update.dpms_off = &dpms_off;
159
160 link_get_master_pipes_with_dpms_on(link, state, &count, pipes);
161
162 for (i = 0; i < count; i++) {
163 stream_update.stream = pipes[i]->stream;
164 dc_commit_updates_for_stream(link->ctx->dc, NULL, 0,
165 pipes[i]->stream, &stream_update,
166 state);
167 }
168
169 /* link can be also enabled by vbios. In this case it is not recorded
170 * in pipe_ctx. Disable link phy here to make sure it is completely off
171 */
172 dp_disable_link_phy(link, &link_res, link->connector_signal);
173 }
174
link_resume(struct dc_link * link)175 void link_resume(struct dc_link *link)
176 {
177 if (link->connector_signal != SIGNAL_TYPE_VIRTUAL)
178 program_hpd_filter(link);
179 }
180
181 /* This function returns true if the pipe is used to feed video signal directly
182 * to the link.
183 */
is_master_pipe_for_link(const struct dc_link * link,const struct pipe_ctx * pipe)184 static bool is_master_pipe_for_link(const struct dc_link *link,
185 const struct pipe_ctx *pipe)
186 {
187 return resource_is_pipe_type(pipe, OTG_MASTER) &&
188 pipe->stream->link == link;
189 }
190
191 /*
192 * This function finds all master pipes feeding to a given link with dpms set to
193 * on in given dc state.
194 */
link_get_master_pipes_with_dpms_on(const struct dc_link * link,struct dc_state * state,uint8_t * count,struct pipe_ctx * pipes[MAX_PIPES])195 void link_get_master_pipes_with_dpms_on(const struct dc_link *link,
196 struct dc_state *state,
197 uint8_t *count,
198 struct pipe_ctx *pipes[MAX_PIPES])
199 {
200 int i;
201 struct pipe_ctx *pipe = NULL;
202
203 *count = 0;
204 for (i = 0; i < MAX_PIPES; i++) {
205 pipe = &state->res_ctx.pipe_ctx[i];
206
207 if (is_master_pipe_for_link(link, pipe) &&
208 pipe->stream->dpms_off == false) {
209 pipes[(*count)++] = pipe;
210 }
211 }
212 }
213
get_ext_hdmi_settings(struct pipe_ctx * pipe_ctx,enum engine_id eng_id,struct ext_hdmi_settings * settings)214 static bool get_ext_hdmi_settings(struct pipe_ctx *pipe_ctx,
215 enum engine_id eng_id,
216 struct ext_hdmi_settings *settings)
217 {
218 bool result = false;
219 int i = 0;
220 struct integrated_info *integrated_info =
221 pipe_ctx->stream->ctx->dc_bios->integrated_info;
222
223 if (integrated_info == NULL)
224 return false;
225
226 /*
227 * Get retimer settings from sbios for passing SI eye test for DCE11
228 * The setting values are varied based on board revision and port id
229 * Therefore the setting values of each ports is passed by sbios.
230 */
231
232 // Check if current bios contains ext Hdmi settings
233 if (integrated_info->gpu_cap_info & 0x20) {
234 switch (eng_id) {
235 case ENGINE_ID_DIGA:
236 settings->slv_addr = integrated_info->dp0_ext_hdmi_slv_addr;
237 settings->reg_num = integrated_info->dp0_ext_hdmi_6g_reg_num;
238 settings->reg_num_6g = integrated_info->dp0_ext_hdmi_6g_reg_num;
239 memmove(settings->reg_settings,
240 integrated_info->dp0_ext_hdmi_reg_settings,
241 sizeof(integrated_info->dp0_ext_hdmi_reg_settings));
242 memmove(settings->reg_settings_6g,
243 integrated_info->dp0_ext_hdmi_6g_reg_settings,
244 sizeof(integrated_info->dp0_ext_hdmi_6g_reg_settings));
245 result = true;
246 break;
247 case ENGINE_ID_DIGB:
248 settings->slv_addr = integrated_info->dp1_ext_hdmi_slv_addr;
249 settings->reg_num = integrated_info->dp1_ext_hdmi_6g_reg_num;
250 settings->reg_num_6g = integrated_info->dp1_ext_hdmi_6g_reg_num;
251 memmove(settings->reg_settings,
252 integrated_info->dp1_ext_hdmi_reg_settings,
253 sizeof(integrated_info->dp1_ext_hdmi_reg_settings));
254 memmove(settings->reg_settings_6g,
255 integrated_info->dp1_ext_hdmi_6g_reg_settings,
256 sizeof(integrated_info->dp1_ext_hdmi_6g_reg_settings));
257 result = true;
258 break;
259 case ENGINE_ID_DIGC:
260 settings->slv_addr = integrated_info->dp2_ext_hdmi_slv_addr;
261 settings->reg_num = integrated_info->dp2_ext_hdmi_6g_reg_num;
262 settings->reg_num_6g = integrated_info->dp2_ext_hdmi_6g_reg_num;
263 memmove(settings->reg_settings,
264 integrated_info->dp2_ext_hdmi_reg_settings,
265 sizeof(integrated_info->dp2_ext_hdmi_reg_settings));
266 memmove(settings->reg_settings_6g,
267 integrated_info->dp2_ext_hdmi_6g_reg_settings,
268 sizeof(integrated_info->dp2_ext_hdmi_6g_reg_settings));
269 result = true;
270 break;
271 case ENGINE_ID_DIGD:
272 settings->slv_addr = integrated_info->dp3_ext_hdmi_slv_addr;
273 settings->reg_num = integrated_info->dp3_ext_hdmi_6g_reg_num;
274 settings->reg_num_6g = integrated_info->dp3_ext_hdmi_6g_reg_num;
275 memmove(settings->reg_settings,
276 integrated_info->dp3_ext_hdmi_reg_settings,
277 sizeof(integrated_info->dp3_ext_hdmi_reg_settings));
278 memmove(settings->reg_settings_6g,
279 integrated_info->dp3_ext_hdmi_6g_reg_settings,
280 sizeof(integrated_info->dp3_ext_hdmi_6g_reg_settings));
281 result = true;
282 break;
283 default:
284 break;
285 }
286
287 if (result == true) {
288 // Validate settings from bios integrated info table
289 if (settings->slv_addr == 0)
290 return false;
291 if (settings->reg_num > 9)
292 return false;
293 if (settings->reg_num_6g > 3)
294 return false;
295
296 for (i = 0; i < settings->reg_num; i++) {
297 if (settings->reg_settings[i].i2c_reg_index > 0x20)
298 return false;
299 }
300
301 for (i = 0; i < settings->reg_num_6g; i++) {
302 if (settings->reg_settings_6g[i].i2c_reg_index > 0x20)
303 return false;
304 }
305 }
306 }
307
308 return result;
309 }
310
write_i2c(struct pipe_ctx * pipe_ctx,uint8_t address,uint8_t * buffer,uint32_t length)311 static bool write_i2c(struct pipe_ctx *pipe_ctx,
312 uint8_t address, uint8_t *buffer, uint32_t length)
313 {
314 struct i2c_command cmd = {0};
315 struct i2c_payload payload = {0};
316
317 memset(&payload, 0, sizeof(payload));
318 memset(&cmd, 0, sizeof(cmd));
319
320 cmd.number_of_payloads = 1;
321 cmd.engine = I2C_COMMAND_ENGINE_DEFAULT;
322 cmd.speed = pipe_ctx->stream->ctx->dc->caps.i2c_speed_in_khz;
323
324 payload.address = address;
325 payload.data = buffer;
326 payload.length = length;
327 payload.write = true;
328 cmd.payloads = &payload;
329
330 if (dm_helpers_submit_i2c(pipe_ctx->stream->ctx,
331 pipe_ctx->stream->link, &cmd))
332 return true;
333
334 return false;
335 }
336
write_i2c_retimer_setting(struct pipe_ctx * pipe_ctx,bool is_vga_mode,bool is_over_340mhz,struct ext_hdmi_settings * settings)337 static void write_i2c_retimer_setting(
338 struct pipe_ctx *pipe_ctx,
339 bool is_vga_mode,
340 bool is_over_340mhz,
341 struct ext_hdmi_settings *settings)
342 {
343 uint8_t slave_address = (settings->slv_addr >> 1);
344 uint8_t buffer[2];
345 const uint8_t apply_rx_tx_change = 0x4;
346 uint8_t offset = 0xA;
347 uint8_t value = 0;
348 int i = 0;
349 bool i2c_success = false;
350 DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
351
352 memset(&buffer, 0, sizeof(buffer));
353
354 /* Start Ext-Hdmi programming*/
355
356 for (i = 0; i < settings->reg_num; i++) {
357 /* Apply 3G settings */
358 if (settings->reg_settings[i].i2c_reg_index <= 0x20) {
359
360 buffer[0] = settings->reg_settings[i].i2c_reg_index;
361 buffer[1] = settings->reg_settings[i].i2c_reg_val;
362 i2c_success = write_i2c(pipe_ctx, slave_address,
363 buffer, sizeof(buffer));
364 RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
365 offset = 0x%x, reg_val= 0x%x, i2c_success = %d\n",
366 slave_address, buffer[0], buffer[1], i2c_success?1:0);
367
368 if (!i2c_success)
369 goto i2c_write_fail;
370
371 /* Based on DP159 specs, APPLY_RX_TX_CHANGE bit in 0x0A
372 * needs to be set to 1 on every 0xA-0xC write.
373 */
374 if (settings->reg_settings[i].i2c_reg_index == 0xA ||
375 settings->reg_settings[i].i2c_reg_index == 0xB ||
376 settings->reg_settings[i].i2c_reg_index == 0xC) {
377
378 /* Query current value from offset 0xA */
379 if (settings->reg_settings[i].i2c_reg_index == 0xA)
380 value = settings->reg_settings[i].i2c_reg_val;
381 else {
382 i2c_success =
383 link_query_ddc_data(
384 pipe_ctx->stream->link->ddc,
385 slave_address, &offset, 1, &value, 1);
386 if (!i2c_success)
387 goto i2c_write_fail;
388 }
389
390 buffer[0] = offset;
391 /* Set APPLY_RX_TX_CHANGE bit to 1 */
392 buffer[1] = value | apply_rx_tx_change;
393 i2c_success = write_i2c(pipe_ctx, slave_address,
394 buffer, sizeof(buffer));
395 RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
396 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
397 slave_address, buffer[0], buffer[1], i2c_success?1:0);
398 if (!i2c_success)
399 goto i2c_write_fail;
400 }
401 }
402 }
403
404 /* Apply 3G settings */
405 if (is_over_340mhz) {
406 for (i = 0; i < settings->reg_num_6g; i++) {
407 /* Apply 3G settings */
408 if (settings->reg_settings[i].i2c_reg_index <= 0x20) {
409
410 buffer[0] = settings->reg_settings_6g[i].i2c_reg_index;
411 buffer[1] = settings->reg_settings_6g[i].i2c_reg_val;
412 i2c_success = write_i2c(pipe_ctx, slave_address,
413 buffer, sizeof(buffer));
414 RETIMER_REDRIVER_INFO("above 340Mhz: retimer write to slave_address = 0x%x,\
415 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
416 slave_address, buffer[0], buffer[1], i2c_success?1:0);
417
418 if (!i2c_success)
419 goto i2c_write_fail;
420
421 /* Based on DP159 specs, APPLY_RX_TX_CHANGE bit in 0x0A
422 * needs to be set to 1 on every 0xA-0xC write.
423 */
424 if (settings->reg_settings_6g[i].i2c_reg_index == 0xA ||
425 settings->reg_settings_6g[i].i2c_reg_index == 0xB ||
426 settings->reg_settings_6g[i].i2c_reg_index == 0xC) {
427
428 /* Query current value from offset 0xA */
429 if (settings->reg_settings_6g[i].i2c_reg_index == 0xA)
430 value = settings->reg_settings_6g[i].i2c_reg_val;
431 else {
432 i2c_success =
433 link_query_ddc_data(
434 pipe_ctx->stream->link->ddc,
435 slave_address, &offset, 1, &value, 1);
436 if (!i2c_success)
437 goto i2c_write_fail;
438 }
439
440 buffer[0] = offset;
441 /* Set APPLY_RX_TX_CHANGE bit to 1 */
442 buffer[1] = value | apply_rx_tx_change;
443 i2c_success = write_i2c(pipe_ctx, slave_address,
444 buffer, sizeof(buffer));
445 RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
446 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
447 slave_address, buffer[0], buffer[1], i2c_success?1:0);
448 if (!i2c_success)
449 goto i2c_write_fail;
450 }
451 }
452 }
453 }
454
455 if (is_vga_mode) {
456 /* Program additional settings if using 640x480 resolution */
457
458 /* Write offset 0xFF to 0x01 */
459 buffer[0] = 0xff;
460 buffer[1] = 0x01;
461 i2c_success = write_i2c(pipe_ctx, slave_address,
462 buffer, sizeof(buffer));
463 RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
464 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
465 slave_address, buffer[0], buffer[1], i2c_success?1:0);
466 if (!i2c_success)
467 goto i2c_write_fail;
468
469 /* Write offset 0x00 to 0x23 */
470 buffer[0] = 0x00;
471 buffer[1] = 0x23;
472 i2c_success = write_i2c(pipe_ctx, slave_address,
473 buffer, sizeof(buffer));
474 RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
475 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
476 slave_address, buffer[0], buffer[1], i2c_success?1:0);
477 if (!i2c_success)
478 goto i2c_write_fail;
479
480 /* Write offset 0xff to 0x00 */
481 buffer[0] = 0xff;
482 buffer[1] = 0x00;
483 i2c_success = write_i2c(pipe_ctx, slave_address,
484 buffer, sizeof(buffer));
485 RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
486 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
487 slave_address, buffer[0], buffer[1], i2c_success?1:0);
488 if (!i2c_success)
489 goto i2c_write_fail;
490
491 }
492
493 return;
494
495 i2c_write_fail:
496 DC_LOG_DEBUG("Set retimer failed");
497 }
498
write_i2c_default_retimer_setting(struct pipe_ctx * pipe_ctx,bool is_vga_mode,bool is_over_340mhz)499 static void write_i2c_default_retimer_setting(
500 struct pipe_ctx *pipe_ctx,
501 bool is_vga_mode,
502 bool is_over_340mhz)
503 {
504 uint8_t slave_address = (0xBA >> 1);
505 uint8_t buffer[2];
506 bool i2c_success = false;
507 DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
508
509 memset(&buffer, 0, sizeof(buffer));
510
511 /* Program Slave Address for tuning single integrity */
512 /* Write offset 0x0A to 0x13 */
513 buffer[0] = 0x0A;
514 buffer[1] = 0x13;
515 i2c_success = write_i2c(pipe_ctx, slave_address,
516 buffer, sizeof(buffer));
517 RETIMER_REDRIVER_INFO("retimer writes default setting to slave_address = 0x%x,\
518 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
519 slave_address, buffer[0], buffer[1], i2c_success?1:0);
520 if (!i2c_success)
521 goto i2c_write_fail;
522
523 /* Write offset 0x0A to 0x17 */
524 buffer[0] = 0x0A;
525 buffer[1] = 0x17;
526 i2c_success = write_i2c(pipe_ctx, slave_address,
527 buffer, sizeof(buffer));
528 RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
529 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
530 slave_address, buffer[0], buffer[1], i2c_success?1:0);
531 if (!i2c_success)
532 goto i2c_write_fail;
533
534 /* Write offset 0x0B to 0xDA or 0xD8 */
535 buffer[0] = 0x0B;
536 buffer[1] = is_over_340mhz ? 0xDA : 0xD8;
537 i2c_success = write_i2c(pipe_ctx, slave_address,
538 buffer, sizeof(buffer));
539 RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
540 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
541 slave_address, buffer[0], buffer[1], i2c_success?1:0);
542 if (!i2c_success)
543 goto i2c_write_fail;
544
545 /* Write offset 0x0A to 0x17 */
546 buffer[0] = 0x0A;
547 buffer[1] = 0x17;
548 i2c_success = write_i2c(pipe_ctx, slave_address,
549 buffer, sizeof(buffer));
550 RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
551 offset = 0x%x, reg_val= 0x%x, i2c_success = %d\n",
552 slave_address, buffer[0], buffer[1], i2c_success?1:0);
553 if (!i2c_success)
554 goto i2c_write_fail;
555
556 /* Write offset 0x0C to 0x1D or 0x91 */
557 buffer[0] = 0x0C;
558 buffer[1] = is_over_340mhz ? 0x1D : 0x91;
559 i2c_success = write_i2c(pipe_ctx, slave_address,
560 buffer, sizeof(buffer));
561 RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
562 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
563 slave_address, buffer[0], buffer[1], i2c_success?1:0);
564 if (!i2c_success)
565 goto i2c_write_fail;
566
567 /* Write offset 0x0A to 0x17 */
568 buffer[0] = 0x0A;
569 buffer[1] = 0x17;
570 i2c_success = write_i2c(pipe_ctx, slave_address,
571 buffer, sizeof(buffer));
572 RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
573 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
574 slave_address, buffer[0], buffer[1], i2c_success?1:0);
575 if (!i2c_success)
576 goto i2c_write_fail;
577
578
579 if (is_vga_mode) {
580 /* Program additional settings if using 640x480 resolution */
581
582 /* Write offset 0xFF to 0x01 */
583 buffer[0] = 0xff;
584 buffer[1] = 0x01;
585 i2c_success = write_i2c(pipe_ctx, slave_address,
586 buffer, sizeof(buffer));
587 RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
588 offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
589 slave_address, buffer[0], buffer[1], i2c_success?1:0);
590 if (!i2c_success)
591 goto i2c_write_fail;
592
593 /* Write offset 0x00 to 0x23 */
594 buffer[0] = 0x00;
595 buffer[1] = 0x23;
596 i2c_success = write_i2c(pipe_ctx, slave_address,
597 buffer, sizeof(buffer));
598 RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
599 offset = 0x%x, reg_val= 0x%x, i2c_success = %d\n",
600 slave_address, buffer[0], buffer[1], i2c_success?1:0);
601 if (!i2c_success)
602 goto i2c_write_fail;
603
604 /* Write offset 0xff to 0x00 */
605 buffer[0] = 0xff;
606 buffer[1] = 0x00;
607 i2c_success = write_i2c(pipe_ctx, slave_address,
608 buffer, sizeof(buffer));
609 RETIMER_REDRIVER_INFO("retimer write default setting to slave_addr = 0x%x,\
610 offset = 0x%x, reg_val= 0x%x, i2c_success = %d end here\n",
611 slave_address, buffer[0], buffer[1], i2c_success?1:0);
612 if (!i2c_success)
613 goto i2c_write_fail;
614 }
615
616 return;
617
618 i2c_write_fail:
619 DC_LOG_DEBUG("Set default retimer failed");
620 }
621
write_i2c_redriver_setting(struct pipe_ctx * pipe_ctx,bool is_over_340mhz)622 static void write_i2c_redriver_setting(
623 struct pipe_ctx *pipe_ctx,
624 bool is_over_340mhz)
625 {
626 uint8_t slave_address = (0xF0 >> 1);
627 uint8_t buffer[16];
628 bool i2c_success = false;
629 DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
630
631 memset(&buffer, 0, sizeof(buffer));
632
633 // Program Slave Address for tuning single integrity
634 buffer[3] = 0x4E;
635 buffer[4] = 0x4E;
636 buffer[5] = 0x4E;
637 buffer[6] = is_over_340mhz ? 0x4E : 0x4A;
638
639 i2c_success = write_i2c(pipe_ctx, slave_address,
640 buffer, sizeof(buffer));
641 RETIMER_REDRIVER_INFO("redriver write 0 to all 16 reg offset expect following:\n\
642 \t slave_addr = 0x%x, offset[3] = 0x%x, offset[4] = 0x%x,\
643 offset[5] = 0x%x,offset[6] is_over_340mhz = 0x%x,\
644 i2c_success = %d\n",
645 slave_address, buffer[3], buffer[4], buffer[5], buffer[6], i2c_success?1:0);
646
647 if (!i2c_success)
648 DC_LOG_DEBUG("Set redriver failed");
649 }
650
update_psp_stream_config(struct pipe_ctx * pipe_ctx,bool dpms_off)651 static void update_psp_stream_config(struct pipe_ctx *pipe_ctx, bool dpms_off)
652 {
653 struct cp_psp *cp_psp = &pipe_ctx->stream->ctx->cp_psp;
654 struct link_encoder *link_enc = NULL;
655 struct cp_psp_stream_config config = {0};
656 enum dp_panel_mode panel_mode =
657 dp_get_panel_mode(pipe_ctx->stream->link);
658
659 if (cp_psp == NULL || cp_psp->funcs.update_stream_config == NULL)
660 return;
661
662 link_enc = link_enc_cfg_get_link_enc(pipe_ctx->stream->link);
663 ASSERT(link_enc);
664 if (link_enc == NULL)
665 return;
666
667 /* otg instance */
668 config.otg_inst = (uint8_t) pipe_ctx->stream_res.tg->inst;
669
670 /* dig front end */
671 config.dig_fe = (uint8_t) pipe_ctx->stream_res.stream_enc->stream_enc_inst;
672
673 /* stream encoder index */
674 config.stream_enc_idx = pipe_ctx->stream_res.stream_enc->id - ENGINE_ID_DIGA;
675 if (dp_is_128b_132b_signal(pipe_ctx))
676 config.stream_enc_idx =
677 pipe_ctx->stream_res.hpo_dp_stream_enc->id - ENGINE_ID_HPO_DP_0;
678
679 /* dig back end */
680 config.dig_be = pipe_ctx->stream->link->link_enc_hw_inst;
681
682 /* link encoder index */
683 config.link_enc_idx = link_enc->transmitter - TRANSMITTER_UNIPHY_A;
684 if (dp_is_128b_132b_signal(pipe_ctx))
685 config.link_enc_idx = pipe_ctx->link_res.hpo_dp_link_enc->inst;
686
687 /* dio output index is dpia index for DPIA endpoint & dcio index by default */
688 if (pipe_ctx->stream->link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA)
689 config.dio_output_idx = pipe_ctx->stream->link->link_id.enum_id - ENUM_ID_1;
690 else
691 config.dio_output_idx = link_enc->transmitter - TRANSMITTER_UNIPHY_A;
692
693
694 /* phy index */
695 config.phy_idx = resource_transmitter_to_phy_idx(
696 pipe_ctx->stream->link->dc, link_enc->transmitter);
697 if (pipe_ctx->stream->link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA)
698 /* USB4 DPIA doesn't use PHY in our soc, initialize it to 0 */
699 config.phy_idx = 0;
700
701 /* stream properties */
702 config.assr_enabled = (panel_mode == DP_PANEL_MODE_EDP) ? 1 : 0;
703 config.mst_enabled = (pipe_ctx->stream->signal ==
704 SIGNAL_TYPE_DISPLAY_PORT_MST) ? 1 : 0;
705 config.dp2_enabled = dp_is_128b_132b_signal(pipe_ctx) ? 1 : 0;
706 config.usb4_enabled = (pipe_ctx->stream->link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) ?
707 1 : 0;
708 config.dpms_off = dpms_off;
709
710 /* dm stream context */
711 config.dm_stream_ctx = pipe_ctx->stream->dm_stream_context;
712
713 cp_psp->funcs.update_stream_config(cp_psp->handle, &config);
714 }
715
set_avmute(struct pipe_ctx * pipe_ctx,bool enable)716 static void set_avmute(struct pipe_ctx *pipe_ctx, bool enable)
717 {
718 struct dc *dc = pipe_ctx->stream->ctx->dc;
719
720 if (!dc_is_hdmi_signal(pipe_ctx->stream->signal))
721 return;
722
723 dc->hwss.set_avmute(pipe_ctx, enable);
724 }
725
enable_mst_on_sink(struct dc_link * link,bool enable)726 static void enable_mst_on_sink(struct dc_link *link, bool enable)
727 {
728 unsigned char mstmCntl;
729
730 core_link_read_dpcd(link, DP_MSTM_CTRL, &mstmCntl, 1);
731 if (enable)
732 mstmCntl |= DP_MST_EN;
733 else
734 mstmCntl &= (~DP_MST_EN);
735
736 core_link_write_dpcd(link, DP_MSTM_CTRL, &mstmCntl, 1);
737 }
738
dsc_optc_config_log(struct display_stream_compressor * dsc,struct dsc_optc_config * config)739 static void dsc_optc_config_log(struct display_stream_compressor *dsc,
740 struct dsc_optc_config *config)
741 {
742 uint32_t precision = 1 << 28;
743 uint32_t bytes_per_pixel_int = config->bytes_per_pixel / precision;
744 uint32_t bytes_per_pixel_mod = config->bytes_per_pixel % precision;
745 uint64_t ll_bytes_per_pix_fraq = bytes_per_pixel_mod;
746 DC_LOGGER_INIT(dsc->ctx->logger);
747
748 /* 7 fractional digits decimal precision for bytes per pixel is enough because DSC
749 * bits per pixel precision is 1/16th of a pixel, which means bytes per pixel precision is
750 * 1/16/8 = 1/128 of a byte, or 0.0078125 decimal
751 */
752 ll_bytes_per_pix_fraq *= 10000000;
753 ll_bytes_per_pix_fraq /= precision;
754
755 DC_LOG_DSC("\tbytes_per_pixel 0x%08x (%d.%07d)",
756 config->bytes_per_pixel, bytes_per_pixel_int, (uint32_t)ll_bytes_per_pix_fraq);
757 DC_LOG_DSC("\tis_pixel_format_444 %d", config->is_pixel_format_444);
758 DC_LOG_DSC("\tslice_width %d", config->slice_width);
759 }
760
dp_set_dsc_on_rx(struct pipe_ctx * pipe_ctx,bool enable)761 static bool dp_set_dsc_on_rx(struct pipe_ctx *pipe_ctx, bool enable)
762 {
763 struct dc *dc = pipe_ctx->stream->ctx->dc;
764 struct dc_stream_state *stream = pipe_ctx->stream;
765 bool result = false;
766
767 if (dc_is_virtual_signal(stream->signal))
768 result = true;
769 else
770 result = dm_helpers_dp_write_dsc_enable(dc->ctx, stream, enable);
771 return result;
772 }
773
774 /* The stream with these settings can be sent (unblanked) only after DSC was enabled on RX first,
775 * i.e. after dp_enable_dsc_on_rx() had been called
776 */
link_set_dsc_on_stream(struct pipe_ctx * pipe_ctx,bool enable)777 void link_set_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
778 {
779 /* TODO: Move this to HWSS as this is hardware programming sequence not a
780 * link layer sequence
781 */
782 struct display_stream_compressor *dsc = pipe_ctx->stream_res.dsc;
783 struct dc *dc = pipe_ctx->stream->ctx->dc;
784 struct dc_stream_state *stream = pipe_ctx->stream;
785 struct pipe_ctx *odm_pipe;
786 int opp_cnt = 1;
787 struct dccg *dccg = dc->res_pool->dccg;
788 /* It has been found that when DSCCLK is lower than 16Mhz, we will get DCN
789 * register access hung. When DSCCLk is based on refclk, DSCCLk is always a
790 * fixed value higher than 16Mhz so the issue doesn't occur. When DSCCLK is
791 * generated by DTO, DSCCLK would be based on 1/3 dispclk. For small timings
792 * with DSC such as 480p60Hz, the dispclk could be low enough to trigger
793 * this problem. We are implementing a workaround here to keep using dscclk
794 * based on fixed value refclk when timing is smaller than 3x16Mhz (i.e
795 * 48Mhz) pixel clock to avoid hitting this problem.
796 */
797 bool should_use_dto_dscclk = (dccg->funcs->set_dto_dscclk != NULL) &&
798 stream->timing.pix_clk_100hz > 480000;
799 DC_LOGGER_INIT(dsc->ctx->logger);
800
801 for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe)
802 opp_cnt++;
803
804 if (enable) {
805 struct dsc_config dsc_cfg;
806 struct dsc_optc_config dsc_optc_cfg;
807 enum optc_dsc_mode optc_dsc_mode;
808
809 /* Enable DSC hw block */
810 dsc_cfg.pic_width = (stream->timing.h_addressable + stream->timing.h_border_left + stream->timing.h_border_right) / opp_cnt;
811 dsc_cfg.pic_height = stream->timing.v_addressable + stream->timing.v_border_top + stream->timing.v_border_bottom;
812 dsc_cfg.pixel_encoding = stream->timing.pixel_encoding;
813 dsc_cfg.color_depth = stream->timing.display_color_depth;
814 dsc_cfg.is_odm = pipe_ctx->next_odm_pipe ? true : false;
815 dsc_cfg.dc_dsc_cfg = stream->timing.dsc_cfg;
816 ASSERT(dsc_cfg.dc_dsc_cfg.num_slices_h % opp_cnt == 0);
817 dsc_cfg.dc_dsc_cfg.num_slices_h /= opp_cnt;
818
819 dsc->funcs->dsc_set_config(dsc, &dsc_cfg, &dsc_optc_cfg);
820 dsc->funcs->dsc_enable(dsc, pipe_ctx->stream_res.opp->inst);
821 if (should_use_dto_dscclk)
822 dccg->funcs->set_dto_dscclk(dccg, dsc->inst);
823 for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) {
824 struct display_stream_compressor *odm_dsc = odm_pipe->stream_res.dsc;
825
826 odm_dsc->funcs->dsc_set_config(odm_dsc, &dsc_cfg, &dsc_optc_cfg);
827 odm_dsc->funcs->dsc_enable(odm_dsc, odm_pipe->stream_res.opp->inst);
828 if (should_use_dto_dscclk)
829 dccg->funcs->set_dto_dscclk(dccg, odm_dsc->inst);
830 }
831 dsc_cfg.dc_dsc_cfg.num_slices_h *= opp_cnt;
832 dsc_cfg.pic_width *= opp_cnt;
833
834 optc_dsc_mode = dsc_optc_cfg.is_pixel_format_444 ? OPTC_DSC_ENABLED_444 : OPTC_DSC_ENABLED_NATIVE_SUBSAMPLED;
835
836 /* Enable DSC in encoder */
837 if (dc_is_dp_signal(stream->signal) && !dp_is_128b_132b_signal(pipe_ctx)) {
838 DC_LOG_DSC("Setting stream encoder DSC config for engine %d:", (int)pipe_ctx->stream_res.stream_enc->id);
839 dsc_optc_config_log(dsc, &dsc_optc_cfg);
840 pipe_ctx->stream_res.stream_enc->funcs->dp_set_dsc_config(pipe_ctx->stream_res.stream_enc,
841 optc_dsc_mode,
842 dsc_optc_cfg.bytes_per_pixel,
843 dsc_optc_cfg.slice_width);
844
845 /* PPS SDP is set elsewhere because it has to be done after DIG FE is connected to DIG BE */
846 }
847
848 /* Enable DSC in OPTC */
849 DC_LOG_DSC("Setting optc DSC config for tg instance %d:", pipe_ctx->stream_res.tg->inst);
850 dsc_optc_config_log(dsc, &dsc_optc_cfg);
851 pipe_ctx->stream_res.tg->funcs->set_dsc_config(pipe_ctx->stream_res.tg,
852 optc_dsc_mode,
853 dsc_optc_cfg.bytes_per_pixel,
854 dsc_optc_cfg.slice_width);
855 } else {
856 /* disable DSC in OPTC */
857 pipe_ctx->stream_res.tg->funcs->set_dsc_config(
858 pipe_ctx->stream_res.tg,
859 OPTC_DSC_DISABLED, 0, 0);
860
861 /* disable DSC in stream encoder */
862 if (dc_is_dp_signal(stream->signal)) {
863 if (dp_is_128b_132b_signal(pipe_ctx))
864 pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_set_dsc_pps_info_packet(
865 pipe_ctx->stream_res.hpo_dp_stream_enc,
866 false,
867 NULL,
868 true);
869 else {
870 pipe_ctx->stream_res.stream_enc->funcs->dp_set_dsc_config(
871 pipe_ctx->stream_res.stream_enc,
872 OPTC_DSC_DISABLED, 0, 0);
873 pipe_ctx->stream_res.stream_enc->funcs->dp_set_dsc_pps_info_packet(
874 pipe_ctx->stream_res.stream_enc, false, NULL, true);
875 }
876 }
877
878 /* disable DSC block */
879 if (dccg->funcs->set_ref_dscclk)
880 dccg->funcs->set_ref_dscclk(dccg, pipe_ctx->stream_res.dsc->inst);
881 pipe_ctx->stream_res.dsc->funcs->dsc_disable(pipe_ctx->stream_res.dsc);
882 for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) {
883 if (dccg->funcs->set_ref_dscclk)
884 dccg->funcs->set_ref_dscclk(dccg, odm_pipe->stream_res.dsc->inst);
885 odm_pipe->stream_res.dsc->funcs->dsc_disable(odm_pipe->stream_res.dsc);
886 }
887 }
888 }
889
890 /*
891 * For dynamic bpp change case, dsc is programmed with MASTER_UPDATE_LOCK enabled;
892 * hence PPS info packet update need to use frame update instead of immediate update.
893 * Added parameter immediate_update for this purpose.
894 * The decision to use frame update is hard-coded in function dp_update_dsc_config(),
895 * which is the only place where a "false" would be passed in for param immediate_update.
896 *
897 * immediate_update is only applicable when DSC is enabled.
898 */
link_set_dsc_pps_packet(struct pipe_ctx * pipe_ctx,bool enable,bool immediate_update)899 bool link_set_dsc_pps_packet(struct pipe_ctx *pipe_ctx, bool enable, bool immediate_update)
900 {
901 struct display_stream_compressor *dsc = pipe_ctx->stream_res.dsc;
902 struct dc_stream_state *stream = pipe_ctx->stream;
903
904 if (!pipe_ctx->stream->timing.flags.DSC)
905 return false;
906
907 if (!dsc)
908 return false;
909
910 DC_LOGGER_INIT(dsc->ctx->logger);
911
912 if (enable) {
913 struct dsc_config dsc_cfg;
914 uint8_t dsc_packed_pps[128];
915
916 memset(&dsc_cfg, 0, sizeof(dsc_cfg));
917 memset(dsc_packed_pps, 0, 128);
918
919 /* Enable DSC hw block */
920 dsc_cfg.pic_width = stream->timing.h_addressable + stream->timing.h_border_left + stream->timing.h_border_right;
921 dsc_cfg.pic_height = stream->timing.v_addressable + stream->timing.v_border_top + stream->timing.v_border_bottom;
922 dsc_cfg.pixel_encoding = stream->timing.pixel_encoding;
923 dsc_cfg.color_depth = stream->timing.display_color_depth;
924 dsc_cfg.is_odm = pipe_ctx->next_odm_pipe ? true : false;
925 dsc_cfg.dc_dsc_cfg = stream->timing.dsc_cfg;
926
927 dsc->funcs->dsc_get_packed_pps(dsc, &dsc_cfg, &dsc_packed_pps[0]);
928 memcpy(&stream->dsc_packed_pps[0], &dsc_packed_pps[0], sizeof(stream->dsc_packed_pps));
929 if (dc_is_dp_signal(stream->signal)) {
930 DC_LOG_DSC("Setting stream encoder DSC PPS SDP for engine %d\n", (int)pipe_ctx->stream_res.stream_enc->id);
931 if (dp_is_128b_132b_signal(pipe_ctx))
932 pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_set_dsc_pps_info_packet(
933 pipe_ctx->stream_res.hpo_dp_stream_enc,
934 true,
935 &dsc_packed_pps[0],
936 immediate_update);
937 else
938 pipe_ctx->stream_res.stream_enc->funcs->dp_set_dsc_pps_info_packet(
939 pipe_ctx->stream_res.stream_enc,
940 true,
941 &dsc_packed_pps[0],
942 immediate_update);
943 }
944 } else {
945 /* disable DSC PPS in stream encoder */
946 memset(&stream->dsc_packed_pps[0], 0, sizeof(stream->dsc_packed_pps));
947 if (dc_is_dp_signal(stream->signal)) {
948 if (dp_is_128b_132b_signal(pipe_ctx))
949 pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_set_dsc_pps_info_packet(
950 pipe_ctx->stream_res.hpo_dp_stream_enc,
951 false,
952 NULL,
953 true);
954 else
955 pipe_ctx->stream_res.stream_enc->funcs->dp_set_dsc_pps_info_packet(
956 pipe_ctx->stream_res.stream_enc, false, NULL, true);
957 }
958 }
959
960 return true;
961 }
962
link_set_dsc_enable(struct pipe_ctx * pipe_ctx,bool enable)963 bool link_set_dsc_enable(struct pipe_ctx *pipe_ctx, bool enable)
964 {
965 struct display_stream_compressor *dsc = pipe_ctx->stream_res.dsc;
966 bool result = false;
967
968 if (!pipe_ctx->stream->timing.flags.DSC)
969 goto out;
970 if (!dsc)
971 goto out;
972
973 if (enable) {
974 {
975 link_set_dsc_on_stream(pipe_ctx, true);
976 result = true;
977 }
978 } else {
979 dp_set_dsc_on_rx(pipe_ctx, false);
980 link_set_dsc_on_stream(pipe_ctx, false);
981 result = true;
982 }
983 out:
984 return result;
985 }
986
link_update_dsc_config(struct pipe_ctx * pipe_ctx)987 bool link_update_dsc_config(struct pipe_ctx *pipe_ctx)
988 {
989 struct display_stream_compressor *dsc = pipe_ctx->stream_res.dsc;
990
991 if (!pipe_ctx->stream->timing.flags.DSC)
992 return false;
993 if (!dsc)
994 return false;
995
996 link_set_dsc_on_stream(pipe_ctx, true);
997 link_set_dsc_pps_packet(pipe_ctx, true, false);
998 return true;
999 }
1000
enable_stream_features(struct pipe_ctx * pipe_ctx)1001 static void enable_stream_features(struct pipe_ctx *pipe_ctx)
1002 {
1003 struct dc_stream_state *stream = pipe_ctx->stream;
1004
1005 if (pipe_ctx->stream->signal != SIGNAL_TYPE_DISPLAY_PORT_MST) {
1006 struct dc_link *link = stream->link;
1007 union down_spread_ctrl old_downspread;
1008 union down_spread_ctrl new_downspread;
1009
1010 memset(&old_downspread, 0, sizeof(old_downspread));
1011
1012 core_link_read_dpcd(link, DP_DOWNSPREAD_CTRL,
1013 &old_downspread.raw, sizeof(old_downspread));
1014
1015 new_downspread.raw = old_downspread.raw;
1016
1017 new_downspread.bits.IGNORE_MSA_TIMING_PARAM =
1018 (stream->ignore_msa_timing_param) ? 1 : 0;
1019
1020 if (new_downspread.raw != old_downspread.raw) {
1021 core_link_write_dpcd(link, DP_DOWNSPREAD_CTRL,
1022 &new_downspread.raw, sizeof(new_downspread));
1023 }
1024
1025 } else {
1026 dm_helpers_mst_enable_stream_features(stream);
1027 }
1028 }
1029
log_vcp_x_y(const struct dc_link * link,struct fixed31_32 avg_time_slots_per_mtp)1030 static void log_vcp_x_y(const struct dc_link *link, struct fixed31_32 avg_time_slots_per_mtp)
1031 {
1032 const uint32_t VCP_Y_PRECISION = 1000;
1033 uint64_t vcp_x, vcp_y;
1034 DC_LOGGER_INIT(link->ctx->logger);
1035
1036 // Add 0.5*(1/VCP_Y_PRECISION) to round up to decimal precision
1037 avg_time_slots_per_mtp = dc_fixpt_add(
1038 avg_time_slots_per_mtp,
1039 dc_fixpt_from_fraction(
1040 1,
1041 2*VCP_Y_PRECISION));
1042
1043 vcp_x = dc_fixpt_floor(
1044 avg_time_slots_per_mtp);
1045 vcp_y = dc_fixpt_floor(
1046 dc_fixpt_mul_int(
1047 dc_fixpt_sub_int(
1048 avg_time_slots_per_mtp,
1049 dc_fixpt_floor(
1050 avg_time_slots_per_mtp)),
1051 VCP_Y_PRECISION));
1052
1053
1054 if (link->type == dc_connection_mst_branch)
1055 DC_LOG_DP2("MST Update Payload: set_throttled_vcp_size slot X.Y for MST stream "
1056 "X: %llu "
1057 "Y: %llu/%d",
1058 vcp_x,
1059 vcp_y,
1060 VCP_Y_PRECISION);
1061 else
1062 DC_LOG_DP2("SST Update Payload: set_throttled_vcp_size slot X.Y for SST stream "
1063 "X: %llu "
1064 "Y: %llu/%d",
1065 vcp_x,
1066 vcp_y,
1067 VCP_Y_PRECISION);
1068 }
1069
get_pbn_per_slot(struct dc_stream_state * stream)1070 static struct fixed31_32 get_pbn_per_slot(struct dc_stream_state *stream)
1071 {
1072 struct fixed31_32 mbytes_per_sec;
1073 uint32_t link_rate_in_mbytes_per_sec = dp_link_bandwidth_kbps(stream->link,
1074 &stream->link->cur_link_settings);
1075 link_rate_in_mbytes_per_sec /= 8000; /* Kbits to MBytes */
1076
1077 mbytes_per_sec = dc_fixpt_from_int(link_rate_in_mbytes_per_sec);
1078
1079 return dc_fixpt_div_int(mbytes_per_sec, 54);
1080 }
1081
get_pbn_from_bw_in_kbps(uint64_t kbps)1082 static struct fixed31_32 get_pbn_from_bw_in_kbps(uint64_t kbps)
1083 {
1084 struct fixed31_32 peak_kbps;
1085 uint32_t numerator = 0;
1086 uint32_t denominator = 1;
1087
1088 /*
1089 * The 1.006 factor (margin 5300ppm + 300ppm ~ 0.6% as per spec) is not
1090 * required when determining PBN/time slot utilization on the link between
1091 * us and the branch, since that overhead is already accounted for in
1092 * the get_pbn_per_slot function.
1093 *
1094 * The unit of 54/64Mbytes/sec is an arbitrary unit chosen based on
1095 * common multiplier to render an integer PBN for all link rate/lane
1096 * counts combinations
1097 * calculate
1098 * peak_kbps *= (64/54)
1099 * peak_kbps /= (8 * 1000) convert to bytes
1100 */
1101
1102 numerator = 64;
1103 denominator = 54 * 8 * 1000;
1104 kbps *= numerator;
1105 peak_kbps = dc_fixpt_from_fraction(kbps, denominator);
1106
1107 return peak_kbps;
1108 }
1109
get_pbn_from_timing(struct pipe_ctx * pipe_ctx)1110 static struct fixed31_32 get_pbn_from_timing(struct pipe_ctx *pipe_ctx)
1111 {
1112 uint64_t kbps;
1113 enum dc_link_encoding_format link_encoding;
1114
1115 if (dp_is_128b_132b_signal(pipe_ctx))
1116 link_encoding = DC_LINK_ENCODING_DP_128b_132b;
1117 else
1118 link_encoding = DC_LINK_ENCODING_DP_8b_10b;
1119
1120 kbps = dc_bandwidth_in_kbps_from_timing(&pipe_ctx->stream->timing, link_encoding);
1121 return get_pbn_from_bw_in_kbps(kbps);
1122 }
1123
1124
1125 // TODO - DP2.0 Link: Fix get_lane_status to handle LTTPR offset (SST and MST)
get_lane_status(struct dc_link * link,uint32_t lane_count,union lane_status * status,union lane_align_status_updated * status_updated)1126 static void get_lane_status(
1127 struct dc_link *link,
1128 uint32_t lane_count,
1129 union lane_status *status,
1130 union lane_align_status_updated *status_updated)
1131 {
1132 unsigned int lane;
1133 uint8_t dpcd_buf[3] = {0};
1134
1135 if (status == NULL || status_updated == NULL) {
1136 return;
1137 }
1138
1139 core_link_read_dpcd(
1140 link,
1141 DP_LANE0_1_STATUS,
1142 dpcd_buf,
1143 sizeof(dpcd_buf));
1144
1145 for (lane = 0; lane < lane_count; lane++) {
1146 status[lane].raw = dp_get_nibble_at_index(&dpcd_buf[0], lane);
1147 }
1148
1149 status_updated->raw = dpcd_buf[2];
1150 }
1151
poll_for_allocation_change_trigger(struct dc_link * link)1152 static bool poll_for_allocation_change_trigger(struct dc_link *link)
1153 {
1154 /*
1155 * wait for ACT handled
1156 */
1157 int i;
1158 const int act_retries = 30;
1159 enum act_return_status result = ACT_FAILED;
1160 union payload_table_update_status update_status = {0};
1161 union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX];
1162 union lane_align_status_updated lane_status_updated;
1163 DC_LOGGER_INIT(link->ctx->logger);
1164
1165 if (link->aux_access_disabled)
1166 return true;
1167 for (i = 0; i < act_retries; i++) {
1168 get_lane_status(link, link->cur_link_settings.lane_count, dpcd_lane_status, &lane_status_updated);
1169
1170 if (!dp_is_cr_done(link->cur_link_settings.lane_count, dpcd_lane_status) ||
1171 !dp_is_ch_eq_done(link->cur_link_settings.lane_count, dpcd_lane_status) ||
1172 !dp_is_symbol_locked(link->cur_link_settings.lane_count, dpcd_lane_status) ||
1173 !dp_is_interlane_aligned(lane_status_updated)) {
1174 DC_LOG_ERROR("SST Update Payload: Link loss occurred while "
1175 "polling for ACT handled.");
1176 result = ACT_LINK_LOST;
1177 break;
1178 }
1179 core_link_read_dpcd(
1180 link,
1181 DP_PAYLOAD_TABLE_UPDATE_STATUS,
1182 &update_status.raw,
1183 1);
1184
1185 if (update_status.bits.ACT_HANDLED == 1) {
1186 DC_LOG_DP2("SST Update Payload: ACT handled by downstream.");
1187 result = ACT_SUCCESS;
1188 break;
1189 }
1190
1191 fsleep(5000);
1192 }
1193
1194 if (result == ACT_FAILED) {
1195 DC_LOG_ERROR("SST Update Payload: ACT still not handled after retries, "
1196 "continue on. Something is wrong with the branch.");
1197 }
1198
1199 return (result == ACT_SUCCESS);
1200 }
1201
update_mst_stream_alloc_table(struct dc_link * link,struct stream_encoder * stream_enc,struct hpo_dp_stream_encoder * hpo_dp_stream_enc,const struct dc_dp_mst_stream_allocation_table * proposed_table)1202 static void update_mst_stream_alloc_table(
1203 struct dc_link *link,
1204 struct stream_encoder *stream_enc,
1205 struct hpo_dp_stream_encoder *hpo_dp_stream_enc, // TODO: Rename stream_enc to dio_stream_enc?
1206 const struct dc_dp_mst_stream_allocation_table *proposed_table)
1207 {
1208 struct link_mst_stream_allocation work_table[MAX_CONTROLLER_NUM] = { 0 };
1209 struct link_mst_stream_allocation *dc_alloc;
1210
1211 int i;
1212 int j;
1213
1214 /* if DRM proposed_table has more than one new payload */
1215 ASSERT(proposed_table->stream_count -
1216 link->mst_stream_alloc_table.stream_count < 2);
1217
1218 /* copy proposed_table to link, add stream encoder */
1219 for (i = 0; i < proposed_table->stream_count; i++) {
1220
1221 for (j = 0; j < link->mst_stream_alloc_table.stream_count; j++) {
1222 dc_alloc =
1223 &link->mst_stream_alloc_table.stream_allocations[j];
1224
1225 if (dc_alloc->vcp_id ==
1226 proposed_table->stream_allocations[i].vcp_id) {
1227
1228 work_table[i] = *dc_alloc;
1229 work_table[i].slot_count = proposed_table->stream_allocations[i].slot_count;
1230 break; /* exit j loop */
1231 }
1232 }
1233
1234 /* new vcp_id */
1235 if (j == link->mst_stream_alloc_table.stream_count) {
1236 work_table[i].vcp_id =
1237 proposed_table->stream_allocations[i].vcp_id;
1238 work_table[i].slot_count =
1239 proposed_table->stream_allocations[i].slot_count;
1240 work_table[i].stream_enc = stream_enc;
1241 work_table[i].hpo_dp_stream_enc = hpo_dp_stream_enc;
1242 }
1243 }
1244
1245 /* update link->mst_stream_alloc_table with work_table */
1246 link->mst_stream_alloc_table.stream_count =
1247 proposed_table->stream_count;
1248 for (i = 0; i < MAX_CONTROLLER_NUM; i++)
1249 link->mst_stream_alloc_table.stream_allocations[i] =
1250 work_table[i];
1251 }
1252
remove_stream_from_alloc_table(struct dc_link * link,struct stream_encoder * dio_stream_enc,struct hpo_dp_stream_encoder * hpo_dp_stream_enc)1253 static void remove_stream_from_alloc_table(
1254 struct dc_link *link,
1255 struct stream_encoder *dio_stream_enc,
1256 struct hpo_dp_stream_encoder *hpo_dp_stream_enc)
1257 {
1258 int i = 0;
1259 struct link_mst_stream_allocation_table *table =
1260 &link->mst_stream_alloc_table;
1261
1262 if (hpo_dp_stream_enc) {
1263 for (; i < table->stream_count; i++)
1264 if (hpo_dp_stream_enc == table->stream_allocations[i].hpo_dp_stream_enc)
1265 break;
1266 } else {
1267 for (; i < table->stream_count; i++)
1268 if (dio_stream_enc == table->stream_allocations[i].stream_enc)
1269 break;
1270 }
1271
1272 if (i < table->stream_count) {
1273 i++;
1274 for (; i < table->stream_count; i++)
1275 table->stream_allocations[i-1] = table->stream_allocations[i];
1276 memset(&table->stream_allocations[table->stream_count-1], 0,
1277 sizeof(struct link_mst_stream_allocation));
1278 table->stream_count--;
1279 }
1280 }
1281
deallocate_mst_payload(struct pipe_ctx * pipe_ctx)1282 static enum dc_status deallocate_mst_payload(struct pipe_ctx *pipe_ctx)
1283 {
1284 struct dc_stream_state *stream = pipe_ctx->stream;
1285 struct dc_link *link = stream->link;
1286 struct dc_dp_mst_stream_allocation_table proposed_table = {0};
1287 struct fixed31_32 avg_time_slots_per_mtp = dc_fixpt_from_int(0);
1288 int i;
1289 bool mst_mode = (link->type == dc_connection_mst_branch);
1290 const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
1291 const struct dc_link_settings empty_link_settings = {0};
1292 DC_LOGGER_INIT(link->ctx->logger);
1293
1294 /* deallocate_mst_payload is called before disable link. When mode or
1295 * disable/enable monitor, new stream is created which is not in link
1296 * stream[] yet. For this, payload is not allocated yet, so de-alloc
1297 * should not done. For new mode set, map_resources will get engine
1298 * for new stream, so stream_enc->id should be validated until here.
1299 */
1300
1301 /* slot X.Y */
1302 if (link_hwss->ext.set_throttled_vcp_size)
1303 link_hwss->ext.set_throttled_vcp_size(pipe_ctx, avg_time_slots_per_mtp);
1304 if (link_hwss->ext.set_hblank_min_symbol_width)
1305 link_hwss->ext.set_hblank_min_symbol_width(pipe_ctx,
1306 &empty_link_settings,
1307 avg_time_slots_per_mtp);
1308
1309 if (mst_mode) {
1310 /* when link is in mst mode, reply on mst manager to remove
1311 * payload
1312 */
1313 if (dm_helpers_dp_mst_write_payload_allocation_table(
1314 stream->ctx,
1315 stream,
1316 &proposed_table,
1317 false))
1318 update_mst_stream_alloc_table(
1319 link,
1320 pipe_ctx->stream_res.stream_enc,
1321 pipe_ctx->stream_res.hpo_dp_stream_enc,
1322 &proposed_table);
1323 else
1324 DC_LOG_WARNING("Failed to update"
1325 "MST allocation table for"
1326 "pipe idx:%d\n",
1327 pipe_ctx->pipe_idx);
1328 } else {
1329 /* when link is no longer in mst mode (mst hub unplugged),
1330 * remove payload with default dc logic
1331 */
1332 remove_stream_from_alloc_table(link, pipe_ctx->stream_res.stream_enc,
1333 pipe_ctx->stream_res.hpo_dp_stream_enc);
1334 }
1335
1336 DC_LOG_MST("%s"
1337 "stream_count: %d: ",
1338 __func__,
1339 link->mst_stream_alloc_table.stream_count);
1340
1341 for (i = 0; i < MAX_CONTROLLER_NUM; i++) {
1342 DC_LOG_MST("stream_enc[%d]: %p "
1343 "stream[%d].hpo_dp_stream_enc: %p "
1344 "stream[%d].vcp_id: %d "
1345 "stream[%d].slot_count: %d\n",
1346 i,
1347 (void *) link->mst_stream_alloc_table.stream_allocations[i].stream_enc,
1348 i,
1349 (void *) link->mst_stream_alloc_table.stream_allocations[i].hpo_dp_stream_enc,
1350 i,
1351 link->mst_stream_alloc_table.stream_allocations[i].vcp_id,
1352 i,
1353 link->mst_stream_alloc_table.stream_allocations[i].slot_count);
1354 }
1355
1356 /* update mst stream allocation table hardware state */
1357 if (link_hwss->ext.update_stream_allocation_table == NULL ||
1358 link_dp_get_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
1359 DC_LOG_DEBUG("Unknown encoding format\n");
1360 return DC_ERROR_UNEXPECTED;
1361 }
1362
1363 link_hwss->ext.update_stream_allocation_table(link, &pipe_ctx->link_res,
1364 &link->mst_stream_alloc_table);
1365
1366 if (mst_mode)
1367 dm_helpers_dp_mst_poll_for_allocation_change_trigger(
1368 stream->ctx,
1369 stream);
1370
1371 dm_helpers_dp_mst_update_mst_mgr_for_deallocation(
1372 stream->ctx,
1373 stream);
1374
1375 return DC_OK;
1376 }
1377
1378 /* convert link_mst_stream_alloc_table to dm dp_mst_stream_alloc_table
1379 * because stream_encoder is not exposed to dm
1380 */
allocate_mst_payload(struct pipe_ctx * pipe_ctx)1381 static enum dc_status allocate_mst_payload(struct pipe_ctx *pipe_ctx)
1382 {
1383 struct dc_stream_state *stream = pipe_ctx->stream;
1384 struct dc_link *link = stream->link;
1385 struct dc_dp_mst_stream_allocation_table proposed_table = {0};
1386 struct fixed31_32 avg_time_slots_per_mtp;
1387 struct fixed31_32 pbn;
1388 struct fixed31_32 pbn_per_slot;
1389 int i;
1390 enum act_return_status ret;
1391 const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
1392 DC_LOGGER_INIT(link->ctx->logger);
1393
1394 /* enable_link_dp_mst already check link->enabled_stream_count
1395 * and stream is in link->stream[]. This is called during set mode,
1396 * stream_enc is available.
1397 */
1398
1399 /* get calculate VC payload for stream: stream_alloc */
1400 if (dm_helpers_dp_mst_write_payload_allocation_table(
1401 stream->ctx,
1402 stream,
1403 &proposed_table,
1404 true))
1405 update_mst_stream_alloc_table(
1406 link,
1407 pipe_ctx->stream_res.stream_enc,
1408 pipe_ctx->stream_res.hpo_dp_stream_enc,
1409 &proposed_table);
1410 else
1411 DC_LOG_WARNING("Failed to update"
1412 "MST allocation table for"
1413 "pipe idx:%d\n",
1414 pipe_ctx->pipe_idx);
1415
1416 DC_LOG_MST("%s "
1417 "stream_count: %d: \n ",
1418 __func__,
1419 link->mst_stream_alloc_table.stream_count);
1420
1421 for (i = 0; i < MAX_CONTROLLER_NUM; i++) {
1422 DC_LOG_MST("stream_enc[%d]: %p "
1423 "stream[%d].hpo_dp_stream_enc: %p "
1424 "stream[%d].vcp_id: %d "
1425 "stream[%d].slot_count: %d\n",
1426 i,
1427 (void *) link->mst_stream_alloc_table.stream_allocations[i].stream_enc,
1428 i,
1429 (void *) link->mst_stream_alloc_table.stream_allocations[i].hpo_dp_stream_enc,
1430 i,
1431 link->mst_stream_alloc_table.stream_allocations[i].vcp_id,
1432 i,
1433 link->mst_stream_alloc_table.stream_allocations[i].slot_count);
1434 }
1435
1436 ASSERT(proposed_table.stream_count > 0);
1437
1438 /* program DP source TX for payload */
1439 if (link_hwss->ext.update_stream_allocation_table == NULL ||
1440 link_dp_get_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
1441 DC_LOG_ERROR("Failure: unknown encoding format\n");
1442 return DC_ERROR_UNEXPECTED;
1443 }
1444
1445 link_hwss->ext.update_stream_allocation_table(link,
1446 &pipe_ctx->link_res,
1447 &link->mst_stream_alloc_table);
1448
1449 /* send down message */
1450 ret = dm_helpers_dp_mst_poll_for_allocation_change_trigger(
1451 stream->ctx,
1452 stream);
1453
1454 if (ret != ACT_LINK_LOST)
1455 dm_helpers_dp_mst_send_payload_allocation(
1456 stream->ctx,
1457 stream);
1458
1459 /* slot X.Y for only current stream */
1460 pbn_per_slot = get_pbn_per_slot(stream);
1461 if (pbn_per_slot.value == 0) {
1462 DC_LOG_ERROR("Failure: pbn_per_slot==0 not allowed. Cannot continue, returning DC_UNSUPPORTED_VALUE.\n");
1463 return DC_UNSUPPORTED_VALUE;
1464 }
1465 pbn = get_pbn_from_timing(pipe_ctx);
1466 avg_time_slots_per_mtp = dc_fixpt_div(pbn, pbn_per_slot);
1467
1468 log_vcp_x_y(link, avg_time_slots_per_mtp);
1469
1470 if (link_hwss->ext.set_throttled_vcp_size)
1471 link_hwss->ext.set_throttled_vcp_size(pipe_ctx, avg_time_slots_per_mtp);
1472 if (link_hwss->ext.set_hblank_min_symbol_width)
1473 link_hwss->ext.set_hblank_min_symbol_width(pipe_ctx,
1474 &link->cur_link_settings,
1475 avg_time_slots_per_mtp);
1476
1477 return DC_OK;
1478 }
1479
link_calculate_sst_avg_time_slots_per_mtp(const struct dc_stream_state * stream,const struct dc_link * link)1480 struct fixed31_32 link_calculate_sst_avg_time_slots_per_mtp(
1481 const struct dc_stream_state *stream,
1482 const struct dc_link *link)
1483 {
1484 struct fixed31_32 link_bw_effective =
1485 dc_fixpt_from_int(
1486 dp_link_bandwidth_kbps(link, &link->cur_link_settings));
1487 struct fixed31_32 timeslot_bw_effective =
1488 dc_fixpt_div_int(link_bw_effective, MAX_MTP_SLOT_COUNT);
1489 struct fixed31_32 timing_bw =
1490 dc_fixpt_from_int(
1491 dc_bandwidth_in_kbps_from_timing(&stream->timing,
1492 dc_link_get_highest_encoding_format(link)));
1493 struct fixed31_32 avg_time_slots_per_mtp =
1494 dc_fixpt_div(timing_bw, timeslot_bw_effective);
1495
1496 return avg_time_slots_per_mtp;
1497 }
1498
1499
write_128b_132b_sst_payload_allocation_table(const struct dc_stream_state * stream,struct dc_link * link,struct link_mst_stream_allocation_table * proposed_table,bool allocate)1500 static bool write_128b_132b_sst_payload_allocation_table(
1501 const struct dc_stream_state *stream,
1502 struct dc_link *link,
1503 struct link_mst_stream_allocation_table *proposed_table,
1504 bool allocate)
1505 {
1506 const uint8_t vc_id = 1; /// VC ID always 1 for SST
1507 const uint8_t start_time_slot = 0; /// Always start at time slot 0 for SST
1508 bool result = false;
1509 uint8_t req_slot_count = 0;
1510 struct fixed31_32 avg_time_slots_per_mtp = { 0 };
1511 union payload_table_update_status update_status = { 0 };
1512 const uint32_t max_retries = 30;
1513 uint32_t retries = 0;
1514 DC_LOGGER_INIT(link->ctx->logger);
1515
1516 if (allocate) {
1517 avg_time_slots_per_mtp = link_calculate_sst_avg_time_slots_per_mtp(stream, link);
1518 req_slot_count = dc_fixpt_ceil(avg_time_slots_per_mtp);
1519 /// Validation should filter out modes that exceed link BW
1520 ASSERT(req_slot_count <= MAX_MTP_SLOT_COUNT);
1521 if (req_slot_count > MAX_MTP_SLOT_COUNT)
1522 return false;
1523 } else {
1524 /// Leave req_slot_count = 0 if allocate is false.
1525 }
1526
1527 proposed_table->stream_count = 1; /// Always 1 stream for SST
1528 proposed_table->stream_allocations[0].slot_count = req_slot_count;
1529 proposed_table->stream_allocations[0].vcp_id = vc_id;
1530
1531 if (link->aux_access_disabled)
1532 return true;
1533
1534 /// Write DPCD 2C0 = 1 to start updating
1535 update_status.bits.VC_PAYLOAD_TABLE_UPDATED = 1;
1536 core_link_write_dpcd(
1537 link,
1538 DP_PAYLOAD_TABLE_UPDATE_STATUS,
1539 &update_status.raw,
1540 1);
1541
1542 /// Program the changes in DPCD 1C0 - 1C2
1543 ASSERT(vc_id == 1);
1544 core_link_write_dpcd(
1545 link,
1546 DP_PAYLOAD_ALLOCATE_SET,
1547 &vc_id,
1548 1);
1549
1550 ASSERT(start_time_slot == 0);
1551 core_link_write_dpcd(
1552 link,
1553 DP_PAYLOAD_ALLOCATE_START_TIME_SLOT,
1554 &start_time_slot,
1555 1);
1556
1557 core_link_write_dpcd(
1558 link,
1559 DP_PAYLOAD_ALLOCATE_TIME_SLOT_COUNT,
1560 &req_slot_count,
1561 1);
1562
1563 /// Poll till DPCD 2C0 read 1
1564 /// Try for at least 150ms (30 retries, with 5ms delay after each attempt)
1565
1566 while (retries < max_retries) {
1567 if (core_link_read_dpcd(
1568 link,
1569 DP_PAYLOAD_TABLE_UPDATE_STATUS,
1570 &update_status.raw,
1571 1) == DC_OK) {
1572 if (update_status.bits.VC_PAYLOAD_TABLE_UPDATED == 1) {
1573 DC_LOG_DP2("SST Update Payload: downstream payload table updated.");
1574 result = true;
1575 break;
1576 }
1577 } else {
1578 union dpcd_rev dpcdRev;
1579
1580 if (core_link_read_dpcd(
1581 link,
1582 DP_DPCD_REV,
1583 &dpcdRev.raw,
1584 1) != DC_OK) {
1585 DC_LOG_ERROR("SST Update Payload: Unable to read DPCD revision "
1586 "of sink while polling payload table "
1587 "updated status bit.");
1588 break;
1589 }
1590 }
1591 retries++;
1592 fsleep(5000);
1593 }
1594
1595 if (!result && retries == max_retries) {
1596 DC_LOG_ERROR("SST Update Payload: Payload table not updated after retries, "
1597 "continue on. Something is wrong with the branch.");
1598 // TODO - DP2.0 Payload: Read and log the payload table from downstream branch
1599 }
1600
1601 return result;
1602 }
1603
1604 /*
1605 * Payload allocation/deallocation for SST introduced in DP2.0
1606 */
update_sst_payload(struct pipe_ctx * pipe_ctx,bool allocate)1607 static enum dc_status update_sst_payload(struct pipe_ctx *pipe_ctx,
1608 bool allocate)
1609 {
1610 struct dc_stream_state *stream = pipe_ctx->stream;
1611 struct dc_link *link = stream->link;
1612 struct link_mst_stream_allocation_table proposed_table = {0};
1613 struct fixed31_32 avg_time_slots_per_mtp;
1614 const struct dc_link_settings empty_link_settings = {0};
1615 const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
1616 DC_LOGGER_INIT(link->ctx->logger);
1617
1618 /* slot X.Y for SST payload deallocate */
1619 if (!allocate) {
1620 avg_time_slots_per_mtp = dc_fixpt_from_int(0);
1621
1622 log_vcp_x_y(link, avg_time_slots_per_mtp);
1623
1624 if (link_hwss->ext.set_throttled_vcp_size)
1625 link_hwss->ext.set_throttled_vcp_size(pipe_ctx,
1626 avg_time_slots_per_mtp);
1627 if (link_hwss->ext.set_hblank_min_symbol_width)
1628 link_hwss->ext.set_hblank_min_symbol_width(pipe_ctx,
1629 &empty_link_settings,
1630 avg_time_slots_per_mtp);
1631 }
1632
1633 /* calculate VC payload and update branch with new payload allocation table*/
1634 if (!write_128b_132b_sst_payload_allocation_table(
1635 stream,
1636 link,
1637 &proposed_table,
1638 allocate)) {
1639 DC_LOG_ERROR("SST Update Payload: Failed to update "
1640 "allocation table for "
1641 "pipe idx: %d\n",
1642 pipe_ctx->pipe_idx);
1643 return DC_FAIL_DP_PAYLOAD_ALLOCATION;
1644 }
1645
1646 proposed_table.stream_allocations[0].hpo_dp_stream_enc = pipe_ctx->stream_res.hpo_dp_stream_enc;
1647
1648 ASSERT(proposed_table.stream_count == 1);
1649
1650 //TODO - DP2.0 Logging: Instead of hpo_dp_stream_enc pointer, log instance id
1651 DC_LOG_DP2("SST Update Payload: hpo_dp_stream_enc: %p "
1652 "vcp_id: %d "
1653 "slot_count: %d\n",
1654 (void *) proposed_table.stream_allocations[0].hpo_dp_stream_enc,
1655 proposed_table.stream_allocations[0].vcp_id,
1656 proposed_table.stream_allocations[0].slot_count);
1657
1658 /* program DP source TX for payload */
1659 link_hwss->ext.update_stream_allocation_table(link, &pipe_ctx->link_res,
1660 &proposed_table);
1661
1662 /* poll for ACT handled */
1663 if (!poll_for_allocation_change_trigger(link)) {
1664 // Failures will result in blackscreen and errors logged
1665 BREAK_TO_DEBUGGER();
1666 }
1667
1668 /* slot X.Y for SST payload allocate */
1669 if (allocate && link_dp_get_encoding_format(&link->cur_link_settings) ==
1670 DP_128b_132b_ENCODING) {
1671 avg_time_slots_per_mtp = link_calculate_sst_avg_time_slots_per_mtp(stream, link);
1672
1673 log_vcp_x_y(link, avg_time_slots_per_mtp);
1674
1675 if (link_hwss->ext.set_throttled_vcp_size)
1676 link_hwss->ext.set_throttled_vcp_size(pipe_ctx,
1677 avg_time_slots_per_mtp);
1678 if (link_hwss->ext.set_hblank_min_symbol_width)
1679 link_hwss->ext.set_hblank_min_symbol_width(pipe_ctx,
1680 &link->cur_link_settings,
1681 avg_time_slots_per_mtp);
1682 }
1683
1684 /* Always return DC_OK.
1685 * If part of sequence fails, log failure(s) and show blackscreen
1686 */
1687 return DC_OK;
1688 }
1689
link_reduce_mst_payload(struct pipe_ctx * pipe_ctx,uint32_t bw_in_kbps)1690 enum dc_status link_reduce_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t bw_in_kbps)
1691 {
1692 struct dc_stream_state *stream = pipe_ctx->stream;
1693 struct dc_link *link = stream->link;
1694 struct fixed31_32 avg_time_slots_per_mtp;
1695 struct fixed31_32 pbn;
1696 struct fixed31_32 pbn_per_slot;
1697 struct dc_dp_mst_stream_allocation_table proposed_table = {0};
1698 uint8_t i;
1699 const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
1700 DC_LOGGER_INIT(link->ctx->logger);
1701
1702 /* decrease throttled vcp size */
1703 pbn_per_slot = get_pbn_per_slot(stream);
1704 pbn = get_pbn_from_bw_in_kbps(bw_in_kbps);
1705 avg_time_slots_per_mtp = dc_fixpt_div(pbn, pbn_per_slot);
1706
1707 if (link_hwss->ext.set_throttled_vcp_size)
1708 link_hwss->ext.set_throttled_vcp_size(pipe_ctx, avg_time_slots_per_mtp);
1709 if (link_hwss->ext.set_hblank_min_symbol_width)
1710 link_hwss->ext.set_hblank_min_symbol_width(pipe_ctx,
1711 &link->cur_link_settings,
1712 avg_time_slots_per_mtp);
1713
1714 /* send ALLOCATE_PAYLOAD sideband message with updated pbn */
1715 dm_helpers_dp_mst_send_payload_allocation(
1716 stream->ctx,
1717 stream);
1718
1719 /* notify immediate branch device table update */
1720 if (dm_helpers_dp_mst_write_payload_allocation_table(
1721 stream->ctx,
1722 stream,
1723 &proposed_table,
1724 true)) {
1725 /* update mst stream allocation table software state */
1726 update_mst_stream_alloc_table(
1727 link,
1728 pipe_ctx->stream_res.stream_enc,
1729 pipe_ctx->stream_res.hpo_dp_stream_enc,
1730 &proposed_table);
1731 } else {
1732 DC_LOG_WARNING("Failed to update"
1733 "MST allocation table for"
1734 "pipe idx:%d\n",
1735 pipe_ctx->pipe_idx);
1736 }
1737
1738 DC_LOG_MST("%s "
1739 "stream_count: %d: \n ",
1740 __func__,
1741 link->mst_stream_alloc_table.stream_count);
1742
1743 for (i = 0; i < MAX_CONTROLLER_NUM; i++) {
1744 DC_LOG_MST("stream_enc[%d]: %p "
1745 "stream[%d].hpo_dp_stream_enc: %p "
1746 "stream[%d].vcp_id: %d "
1747 "stream[%d].slot_count: %d\n",
1748 i,
1749 (void *) link->mst_stream_alloc_table.stream_allocations[i].stream_enc,
1750 i,
1751 (void *) link->mst_stream_alloc_table.stream_allocations[i].hpo_dp_stream_enc,
1752 i,
1753 link->mst_stream_alloc_table.stream_allocations[i].vcp_id,
1754 i,
1755 link->mst_stream_alloc_table.stream_allocations[i].slot_count);
1756 }
1757
1758 ASSERT(proposed_table.stream_count > 0);
1759
1760 /* update mst stream allocation table hardware state */
1761 if (link_hwss->ext.update_stream_allocation_table == NULL ||
1762 link_dp_get_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
1763 DC_LOG_ERROR("Failure: unknown encoding format\n");
1764 return DC_ERROR_UNEXPECTED;
1765 }
1766
1767 link_hwss->ext.update_stream_allocation_table(link, &pipe_ctx->link_res,
1768 &link->mst_stream_alloc_table);
1769
1770 /* poll for immediate branch device ACT handled */
1771 dm_helpers_dp_mst_poll_for_allocation_change_trigger(
1772 stream->ctx,
1773 stream);
1774
1775 return DC_OK;
1776 }
1777
link_increase_mst_payload(struct pipe_ctx * pipe_ctx,uint32_t bw_in_kbps)1778 enum dc_status link_increase_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t bw_in_kbps)
1779 {
1780 struct dc_stream_state *stream = pipe_ctx->stream;
1781 struct dc_link *link = stream->link;
1782 struct fixed31_32 avg_time_slots_per_mtp;
1783 struct fixed31_32 pbn;
1784 struct fixed31_32 pbn_per_slot;
1785 struct dc_dp_mst_stream_allocation_table proposed_table = {0};
1786 uint8_t i;
1787 enum act_return_status ret;
1788 const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
1789 DC_LOGGER_INIT(link->ctx->logger);
1790
1791 /* notify immediate branch device table update */
1792 if (dm_helpers_dp_mst_write_payload_allocation_table(
1793 stream->ctx,
1794 stream,
1795 &proposed_table,
1796 true)) {
1797 /* update mst stream allocation table software state */
1798 update_mst_stream_alloc_table(
1799 link,
1800 pipe_ctx->stream_res.stream_enc,
1801 pipe_ctx->stream_res.hpo_dp_stream_enc,
1802 &proposed_table);
1803 }
1804
1805 DC_LOG_MST("%s "
1806 "stream_count: %d: \n ",
1807 __func__,
1808 link->mst_stream_alloc_table.stream_count);
1809
1810 for (i = 0; i < MAX_CONTROLLER_NUM; i++) {
1811 DC_LOG_MST("stream_enc[%d]: %p "
1812 "stream[%d].hpo_dp_stream_enc: %p "
1813 "stream[%d].vcp_id: %d "
1814 "stream[%d].slot_count: %d\n",
1815 i,
1816 (void *) link->mst_stream_alloc_table.stream_allocations[i].stream_enc,
1817 i,
1818 (void *) link->mst_stream_alloc_table.stream_allocations[i].hpo_dp_stream_enc,
1819 i,
1820 link->mst_stream_alloc_table.stream_allocations[i].vcp_id,
1821 i,
1822 link->mst_stream_alloc_table.stream_allocations[i].slot_count);
1823 }
1824
1825 ASSERT(proposed_table.stream_count > 0);
1826
1827 /* update mst stream allocation table hardware state */
1828 if (link_hwss->ext.update_stream_allocation_table == NULL ||
1829 link_dp_get_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
1830 DC_LOG_ERROR("Failure: unknown encoding format\n");
1831 return DC_ERROR_UNEXPECTED;
1832 }
1833
1834 link_hwss->ext.update_stream_allocation_table(link, &pipe_ctx->link_res,
1835 &link->mst_stream_alloc_table);
1836
1837 /* poll for immediate branch device ACT handled */
1838 ret = dm_helpers_dp_mst_poll_for_allocation_change_trigger(
1839 stream->ctx,
1840 stream);
1841
1842 if (ret != ACT_LINK_LOST) {
1843 /* send ALLOCATE_PAYLOAD sideband message with updated pbn */
1844 dm_helpers_dp_mst_send_payload_allocation(
1845 stream->ctx,
1846 stream);
1847 }
1848
1849 /* increase throttled vcp size */
1850 pbn = get_pbn_from_bw_in_kbps(bw_in_kbps);
1851 pbn_per_slot = get_pbn_per_slot(stream);
1852 avg_time_slots_per_mtp = dc_fixpt_div(pbn, pbn_per_slot);
1853
1854 if (link_hwss->ext.set_throttled_vcp_size)
1855 link_hwss->ext.set_throttled_vcp_size(pipe_ctx, avg_time_slots_per_mtp);
1856 if (link_hwss->ext.set_hblank_min_symbol_width)
1857 link_hwss->ext.set_hblank_min_symbol_width(pipe_ctx,
1858 &link->cur_link_settings,
1859 avg_time_slots_per_mtp);
1860
1861 return DC_OK;
1862 }
1863
disable_link_dp(struct dc_link * link,const struct link_resource * link_res,enum signal_type signal)1864 static void disable_link_dp(struct dc_link *link,
1865 const struct link_resource *link_res,
1866 enum signal_type signal)
1867 {
1868 struct dc_link_settings link_settings = link->cur_link_settings;
1869
1870 if (signal == SIGNAL_TYPE_DISPLAY_PORT_MST &&
1871 link->mst_stream_alloc_table.stream_count > 0)
1872 /* disable MST link only when last vc payload is deallocated */
1873 return;
1874
1875 dp_disable_link_phy(link, link_res, signal);
1876
1877 if (link->connector_signal == SIGNAL_TYPE_EDP) {
1878 if (!link->skip_implict_edp_power_control)
1879 link->dc->hwss.edp_power_control(link, false);
1880 }
1881
1882 if (signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
1883 /* set the sink to SST mode after disabling the link */
1884 enable_mst_on_sink(link, false);
1885
1886 if (link_dp_get_encoding_format(&link_settings) ==
1887 DP_8b_10b_ENCODING) {
1888 dp_set_fec_enable(link, false);
1889 dp_set_fec_ready(link, link_res, false);
1890 }
1891 }
1892
disable_link(struct dc_link * link,const struct link_resource * link_res,enum signal_type signal)1893 static void disable_link(struct dc_link *link,
1894 const struct link_resource *link_res,
1895 enum signal_type signal)
1896 {
1897 if (dc_is_dp_signal(signal)) {
1898 disable_link_dp(link, link_res, signal);
1899 } else if (signal != SIGNAL_TYPE_VIRTUAL) {
1900 link->dc->hwss.disable_link_output(link, link_res, signal);
1901 }
1902
1903 if (signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
1904 /* MST disable link only when no stream use the link */
1905 if (link->mst_stream_alloc_table.stream_count <= 0)
1906 link->link_status.link_active = false;
1907 } else {
1908 link->link_status.link_active = false;
1909 }
1910 }
1911
enable_link_hdmi(struct pipe_ctx * pipe_ctx)1912 static void enable_link_hdmi(struct pipe_ctx *pipe_ctx)
1913 {
1914 struct dc_stream_state *stream = pipe_ctx->stream;
1915 struct dc_link *link = stream->link;
1916 enum dc_color_depth display_color_depth;
1917 enum engine_id eng_id;
1918 struct ext_hdmi_settings settings = {0};
1919 bool is_over_340mhz = false;
1920 bool is_vga_mode = (stream->timing.h_addressable == 640)
1921 && (stream->timing.v_addressable == 480);
1922 struct dc *dc = pipe_ctx->stream->ctx->dc;
1923 const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
1924
1925 if (stream->phy_pix_clk == 0)
1926 stream->phy_pix_clk = stream->timing.pix_clk_100hz / 10;
1927 if (stream->phy_pix_clk > 340000)
1928 is_over_340mhz = true;
1929
1930 if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) {
1931 unsigned short masked_chip_caps = pipe_ctx->stream->link->chip_caps &
1932 EXT_DISPLAY_PATH_CAPS__EXT_CHIP_MASK;
1933 if (masked_chip_caps == EXT_DISPLAY_PATH_CAPS__HDMI20_TISN65DP159RSBT) {
1934 /* DP159, Retimer settings */
1935 eng_id = pipe_ctx->stream_res.stream_enc->id;
1936
1937 if (get_ext_hdmi_settings(pipe_ctx, eng_id, &settings)) {
1938 write_i2c_retimer_setting(pipe_ctx,
1939 is_vga_mode, is_over_340mhz, &settings);
1940 } else {
1941 write_i2c_default_retimer_setting(pipe_ctx,
1942 is_vga_mode, is_over_340mhz);
1943 }
1944 } else if (masked_chip_caps == EXT_DISPLAY_PATH_CAPS__HDMI20_PI3EQX1204) {
1945 /* PI3EQX1204, Redriver settings */
1946 write_i2c_redriver_setting(pipe_ctx, is_over_340mhz);
1947 }
1948 }
1949
1950 if (dc_is_hdmi_signal(pipe_ctx->stream->signal))
1951 write_scdc_data(
1952 stream->link->ddc,
1953 stream->phy_pix_clk,
1954 stream->timing.flags.LTE_340MCSC_SCRAMBLE);
1955
1956 memset(&stream->link->cur_link_settings, 0,
1957 sizeof(struct dc_link_settings));
1958
1959 display_color_depth = stream->timing.display_color_depth;
1960 if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR422)
1961 display_color_depth = COLOR_DEPTH_888;
1962
1963 /* We need to enable stream encoder for TMDS first to apply 1/4 TMDS
1964 * character clock in case that beyond 340MHz.
1965 */
1966 if (dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal))
1967 link_hwss->setup_stream_encoder(pipe_ctx);
1968
1969 dc->hwss.enable_tmds_link_output(
1970 link,
1971 &pipe_ctx->link_res,
1972 pipe_ctx->stream->signal,
1973 pipe_ctx->clock_source->id,
1974 display_color_depth,
1975 stream->phy_pix_clk);
1976
1977 if (dc_is_hdmi_signal(pipe_ctx->stream->signal))
1978 read_scdc_data(link->ddc);
1979 }
1980
enable_link_dp(struct dc_state * state,struct pipe_ctx * pipe_ctx)1981 static enum dc_status enable_link_dp(struct dc_state *state,
1982 struct pipe_ctx *pipe_ctx)
1983 {
1984 struct dc_stream_state *stream = pipe_ctx->stream;
1985 enum dc_status status;
1986 bool skip_video_pattern;
1987 struct dc_link *link = stream->link;
1988 const struct dc_link_settings *link_settings =
1989 &pipe_ctx->link_config.dp_link_settings;
1990 bool fec_enable;
1991 int i;
1992 bool apply_seamless_boot_optimization = false;
1993 uint32_t bl_oled_enable_delay = 50; // in ms
1994 uint32_t post_oui_delay = 30; // 30ms
1995 /* Reduce link bandwidth between failed link training attempts. */
1996 bool do_fallback = false;
1997 int lt_attempts = LINK_TRAINING_ATTEMPTS;
1998
1999 // Increase retry count if attempting DP1.x on FIXED_VS link
2000 if ((link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) &&
2001 link_dp_get_encoding_format(link_settings) == DP_8b_10b_ENCODING)
2002 lt_attempts = 10;
2003
2004 // check for seamless boot
2005 for (i = 0; i < state->stream_count; i++) {
2006 if (state->streams[i]->apply_seamless_boot_optimization) {
2007 apply_seamless_boot_optimization = true;
2008 break;
2009 }
2010 }
2011
2012 /* Train with fallback when enabling DPIA link. Conventional links are
2013 * trained with fallback during sink detection.
2014 */
2015 if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA)
2016 do_fallback = true;
2017
2018 /*
2019 * Temporary w/a to get DP2.0 link rates to work with SST.
2020 * TODO DP2.0 - Workaround: Remove w/a if and when the issue is resolved.
2021 */
2022 if (link_dp_get_encoding_format(link_settings) == DP_128b_132b_ENCODING &&
2023 pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
2024 link->dc->debug.set_mst_en_for_sst) {
2025 enable_mst_on_sink(link, true);
2026 }
2027 if (pipe_ctx->stream->signal == SIGNAL_TYPE_EDP) {
2028 /*in case it is not on*/
2029 if (!link->dc->config.edp_no_power_sequencing)
2030 link->dc->hwss.edp_power_control(link, true);
2031 link->dc->hwss.edp_wait_for_hpd_ready(link, true);
2032 }
2033
2034 if (link_dp_get_encoding_format(link_settings) == DP_128b_132b_ENCODING) {
2035 /* TODO - DP2.0 HW: calculate 32 symbol clock for HPO encoder */
2036 } else {
2037 pipe_ctx->stream_res.pix_clk_params.requested_sym_clk =
2038 link_settings->link_rate * LINK_RATE_REF_FREQ_IN_KHZ;
2039 if (state->clk_mgr && !apply_seamless_boot_optimization)
2040 state->clk_mgr->funcs->update_clocks(state->clk_mgr,
2041 state, false);
2042 }
2043
2044 // during mode switch we do DP_SET_POWER off then on, and OUI is lost
2045 dpcd_set_source_specific_data(link);
2046 if (link->dpcd_sink_ext_caps.raw != 0) {
2047 post_oui_delay += link->panel_config.pps.extra_post_OUI_ms;
2048 msleep(post_oui_delay);
2049 }
2050
2051 // similarly, mode switch can cause loss of cable ID
2052 dpcd_write_cable_id_to_dprx(link);
2053
2054 skip_video_pattern = true;
2055
2056 if (link_settings->link_rate == LINK_RATE_LOW)
2057 skip_video_pattern = false;
2058
2059 if (perform_link_training_with_retries(link_settings,
2060 skip_video_pattern,
2061 lt_attempts,
2062 pipe_ctx,
2063 pipe_ctx->stream->signal,
2064 do_fallback)) {
2065 status = DC_OK;
2066 } else {
2067 status = DC_FAIL_DP_LINK_TRAINING;
2068 }
2069
2070 if (link->preferred_training_settings.fec_enable)
2071 fec_enable = *link->preferred_training_settings.fec_enable;
2072 else
2073 fec_enable = true;
2074
2075 if (link_dp_get_encoding_format(link_settings) == DP_8b_10b_ENCODING)
2076 dp_set_fec_enable(link, fec_enable);
2077
2078 // during mode set we do DP_SET_POWER off then on, aux writes are lost
2079 if (link->dpcd_sink_ext_caps.bits.oled == 1 ||
2080 link->dpcd_sink_ext_caps.bits.sdr_aux_backlight_control == 1 ||
2081 link->dpcd_sink_ext_caps.bits.hdr_aux_backlight_control == 1) {
2082 set_default_brightness_aux(link);
2083 if (link->dpcd_sink_ext_caps.bits.oled == 1)
2084 msleep(bl_oled_enable_delay);
2085 edp_backlight_enable_aux(link, true);
2086 }
2087
2088 return status;
2089 }
2090
enable_link_edp(struct dc_state * state,struct pipe_ctx * pipe_ctx)2091 static enum dc_status enable_link_edp(
2092 struct dc_state *state,
2093 struct pipe_ctx *pipe_ctx)
2094 {
2095 return enable_link_dp(state, pipe_ctx);
2096 }
2097
enable_link_lvds(struct pipe_ctx * pipe_ctx)2098 static void enable_link_lvds(struct pipe_ctx *pipe_ctx)
2099 {
2100 struct dc_stream_state *stream = pipe_ctx->stream;
2101 struct dc_link *link = stream->link;
2102 struct dc *dc = stream->ctx->dc;
2103
2104 if (stream->phy_pix_clk == 0)
2105 stream->phy_pix_clk = stream->timing.pix_clk_100hz / 10;
2106
2107 memset(&stream->link->cur_link_settings, 0,
2108 sizeof(struct dc_link_settings));
2109 dc->hwss.enable_lvds_link_output(
2110 link,
2111 &pipe_ctx->link_res,
2112 pipe_ctx->clock_source->id,
2113 stream->phy_pix_clk);
2114
2115 }
2116
enable_link_dp_mst(struct dc_state * state,struct pipe_ctx * pipe_ctx)2117 static enum dc_status enable_link_dp_mst(
2118 struct dc_state *state,
2119 struct pipe_ctx *pipe_ctx)
2120 {
2121 struct dc_link *link = pipe_ctx->stream->link;
2122 unsigned char mstm_cntl;
2123
2124 /* sink signal type after MST branch is MST. Multiple MST sinks
2125 * share one link. Link DP PHY is enable or training only once.
2126 */
2127 if (link->link_status.link_active)
2128 return DC_OK;
2129
2130 /* clear payload table */
2131 core_link_read_dpcd(link, DP_MSTM_CTRL, &mstm_cntl, 1);
2132 if (mstm_cntl & DP_MST_EN)
2133 dm_helpers_dp_mst_clear_payload_allocation_table(link->ctx, link);
2134
2135 /* to make sure the pending down rep can be processed
2136 * before enabling the link
2137 */
2138 dm_helpers_dp_mst_poll_pending_down_reply(link->ctx, link);
2139
2140 /* set the sink to MST mode before enabling the link */
2141 enable_mst_on_sink(link, true);
2142
2143 return enable_link_dp(state, pipe_ctx);
2144 }
2145
enable_link(struct dc_state * state,struct pipe_ctx * pipe_ctx)2146 static enum dc_status enable_link(
2147 struct dc_state *state,
2148 struct pipe_ctx *pipe_ctx)
2149 {
2150 enum dc_status status = DC_ERROR_UNEXPECTED;
2151 struct dc_stream_state *stream = pipe_ctx->stream;
2152 struct dc_link *link = stream->link;
2153
2154 /* There's some scenarios where driver is unloaded with display
2155 * still enabled. When driver is reloaded, it may cause a display
2156 * to not light up if there is a mismatch between old and new
2157 * link settings. Need to call disable first before enabling at
2158 * new link settings.
2159 */
2160 if (link->link_status.link_active)
2161 disable_link(link, &pipe_ctx->link_res, pipe_ctx->stream->signal);
2162
2163 switch (pipe_ctx->stream->signal) {
2164 case SIGNAL_TYPE_DISPLAY_PORT:
2165 status = enable_link_dp(state, pipe_ctx);
2166 break;
2167 case SIGNAL_TYPE_EDP:
2168 status = enable_link_edp(state, pipe_ctx);
2169 break;
2170 case SIGNAL_TYPE_DISPLAY_PORT_MST:
2171 status = enable_link_dp_mst(state, pipe_ctx);
2172 msleep(200);
2173 break;
2174 case SIGNAL_TYPE_DVI_SINGLE_LINK:
2175 case SIGNAL_TYPE_DVI_DUAL_LINK:
2176 case SIGNAL_TYPE_HDMI_TYPE_A:
2177 enable_link_hdmi(pipe_ctx);
2178 status = DC_OK;
2179 break;
2180 case SIGNAL_TYPE_LVDS:
2181 enable_link_lvds(pipe_ctx);
2182 status = DC_OK;
2183 break;
2184 case SIGNAL_TYPE_VIRTUAL:
2185 status = DC_OK;
2186 break;
2187 default:
2188 break;
2189 }
2190
2191 if (status == DC_OK) {
2192 pipe_ctx->stream->link->link_status.link_active = true;
2193 }
2194
2195 return status;
2196 }
2197
allocate_usb4_bandwidth_for_stream(struct dc_stream_state * stream,int bw)2198 static bool allocate_usb4_bandwidth_for_stream(struct dc_stream_state *stream, int bw)
2199 {
2200 return true;
2201 }
2202
allocate_usb4_bandwidth(struct dc_stream_state * stream)2203 static bool allocate_usb4_bandwidth(struct dc_stream_state *stream)
2204 {
2205 bool ret;
2206
2207 int bw = dc_bandwidth_in_kbps_from_timing(&stream->timing,
2208 dc_link_get_highest_encoding_format(stream->sink->link));
2209
2210 ret = allocate_usb4_bandwidth_for_stream(stream, bw);
2211
2212 return ret;
2213 }
2214
deallocate_usb4_bandwidth(struct dc_stream_state * stream)2215 static bool deallocate_usb4_bandwidth(struct dc_stream_state *stream)
2216 {
2217 bool ret;
2218
2219 ret = allocate_usb4_bandwidth_for_stream(stream, 0);
2220
2221 return ret;
2222 }
2223
link_set_dpms_off(struct pipe_ctx * pipe_ctx)2224 void link_set_dpms_off(struct pipe_ctx *pipe_ctx)
2225 {
2226 struct dc *dc = pipe_ctx->stream->ctx->dc;
2227 struct dc_stream_state *stream = pipe_ctx->stream;
2228 struct dc_link *link = stream->sink->link;
2229 struct vpg *vpg = pipe_ctx->stream_res.stream_enc->vpg;
2230
2231 DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
2232
2233 ASSERT(is_master_pipe_for_link(link, pipe_ctx));
2234
2235 if (dp_is_128b_132b_signal(pipe_ctx))
2236 vpg = pipe_ctx->stream_res.hpo_dp_stream_enc->vpg;
2237 if (dc_is_virtual_signal(pipe_ctx->stream->signal))
2238 return;
2239
2240 if (pipe_ctx->stream->sink) {
2241 if (pipe_ctx->stream->sink->sink_signal != SIGNAL_TYPE_VIRTUAL &&
2242 pipe_ctx->stream->sink->sink_signal != SIGNAL_TYPE_NONE) {
2243 DC_LOG_DC("%s pipe_ctx dispname=%s signal=%x\n", __func__,
2244 pipe_ctx->stream->sink->edid_caps.display_name,
2245 pipe_ctx->stream->signal);
2246 }
2247 }
2248
2249 if (!pipe_ctx->stream->sink->edid_caps.panel_patch.skip_avmute) {
2250 if (dc_is_hdmi_signal(pipe_ctx->stream->signal))
2251 set_avmute(pipe_ctx, true);
2252 }
2253
2254 dc->hwss.disable_audio_stream(pipe_ctx);
2255
2256 update_psp_stream_config(pipe_ctx, true);
2257 dc->hwss.blank_stream(pipe_ctx);
2258
2259 if (pipe_ctx->stream->link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA)
2260 deallocate_usb4_bandwidth(pipe_ctx->stream);
2261
2262 if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
2263 deallocate_mst_payload(pipe_ctx);
2264 else if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
2265 dp_is_128b_132b_signal(pipe_ctx))
2266 update_sst_payload(pipe_ctx, false);
2267
2268 if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) {
2269 struct ext_hdmi_settings settings = {0};
2270 enum engine_id eng_id = pipe_ctx->stream_res.stream_enc->id;
2271
2272 unsigned short masked_chip_caps = link->chip_caps &
2273 EXT_DISPLAY_PATH_CAPS__EXT_CHIP_MASK;
2274 //Need to inform that sink is going to use legacy HDMI mode.
2275 write_scdc_data(
2276 link->ddc,
2277 165000,//vbios only handles 165Mhz.
2278 false);
2279 if (masked_chip_caps == EXT_DISPLAY_PATH_CAPS__HDMI20_TISN65DP159RSBT) {
2280 /* DP159, Retimer settings */
2281 if (get_ext_hdmi_settings(pipe_ctx, eng_id, &settings))
2282 write_i2c_retimer_setting(pipe_ctx,
2283 false, false, &settings);
2284 else
2285 write_i2c_default_retimer_setting(pipe_ctx,
2286 false, false);
2287 } else if (masked_chip_caps == EXT_DISPLAY_PATH_CAPS__HDMI20_PI3EQX1204) {
2288 /* PI3EQX1204, Redriver settings */
2289 write_i2c_redriver_setting(pipe_ctx, false);
2290 }
2291 }
2292
2293 if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
2294 !dp_is_128b_132b_signal(pipe_ctx)) {
2295
2296 /* In DP1.x SST mode, our encoder will go to TPS1
2297 * when link is on but stream is off.
2298 * Disabling link before stream will avoid exposing TPS1 pattern
2299 * during the disable sequence as it will confuse some receivers
2300 * state machine.
2301 * In DP2 or MST mode, our encoder will stay video active
2302 */
2303 disable_link(pipe_ctx->stream->link, &pipe_ctx->link_res, pipe_ctx->stream->signal);
2304 dc->hwss.disable_stream(pipe_ctx);
2305 } else {
2306 dc->hwss.disable_stream(pipe_ctx);
2307 disable_link(pipe_ctx->stream->link, &pipe_ctx->link_res, pipe_ctx->stream->signal);
2308 }
2309
2310 if (pipe_ctx->stream->timing.flags.DSC) {
2311 if (dc_is_dp_signal(pipe_ctx->stream->signal))
2312 link_set_dsc_enable(pipe_ctx, false);
2313 }
2314 if (dp_is_128b_132b_signal(pipe_ctx)) {
2315 if (pipe_ctx->stream_res.tg->funcs->set_out_mux)
2316 pipe_ctx->stream_res.tg->funcs->set_out_mux(pipe_ctx->stream_res.tg, OUT_MUX_DIO);
2317 }
2318
2319 if (vpg && vpg->funcs->vpg_powerdown)
2320 vpg->funcs->vpg_powerdown(vpg);
2321
2322 /* for psp not exist case */
2323 if (link->connector_signal == SIGNAL_TYPE_EDP && dc->debug.psp_disabled_wa) {
2324 /* reset internal save state to default since eDP is off */
2325 enum dp_panel_mode panel_mode = dp_get_panel_mode(pipe_ctx->stream->link);
2326 /* since current psp not loaded, we need to reset it to default*/
2327 link->panel_mode = panel_mode;
2328 }
2329 }
2330
link_set_dpms_on(struct dc_state * state,struct pipe_ctx * pipe_ctx)2331 void link_set_dpms_on(
2332 struct dc_state *state,
2333 struct pipe_ctx *pipe_ctx)
2334 {
2335 struct dc *dc = pipe_ctx->stream->ctx->dc;
2336 struct dc_stream_state *stream = pipe_ctx->stream;
2337 struct dc_link *link = stream->sink->link;
2338 enum dc_status status;
2339 struct link_encoder *link_enc;
2340 enum otg_out_mux_dest otg_out_dest = OUT_MUX_DIO;
2341 struct vpg *vpg = pipe_ctx->stream_res.stream_enc->vpg;
2342 const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
2343 bool apply_edp_fast_boot_optimization =
2344 pipe_ctx->stream->apply_edp_fast_boot_optimization;
2345
2346 DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
2347
2348 ASSERT(is_master_pipe_for_link(link, pipe_ctx));
2349
2350 if (dp_is_128b_132b_signal(pipe_ctx))
2351 vpg = pipe_ctx->stream_res.hpo_dp_stream_enc->vpg;
2352 if (dc_is_virtual_signal(pipe_ctx->stream->signal))
2353 return;
2354
2355 if (pipe_ctx->stream->sink) {
2356 if (pipe_ctx->stream->sink->sink_signal != SIGNAL_TYPE_VIRTUAL &&
2357 pipe_ctx->stream->sink->sink_signal != SIGNAL_TYPE_NONE) {
2358 DC_LOG_DC("%s pipe_ctx dispname=%s signal=%x\n", __func__,
2359 pipe_ctx->stream->sink->edid_caps.display_name,
2360 pipe_ctx->stream->signal);
2361 }
2362 }
2363
2364 link_enc = link_enc_cfg_get_link_enc(link);
2365 ASSERT(link_enc);
2366
2367 if (!dc_is_virtual_signal(pipe_ctx->stream->signal)
2368 && !dp_is_128b_132b_signal(pipe_ctx)) {
2369 struct stream_encoder *stream_enc = pipe_ctx->stream_res.stream_enc;
2370
2371 if (link_enc)
2372 link_enc->funcs->setup(
2373 link_enc,
2374 pipe_ctx->stream->signal);
2375
2376 if (stream_enc && stream_enc->funcs->dig_stream_enable)
2377 stream_enc->funcs->dig_stream_enable(
2378 stream_enc,
2379 pipe_ctx->stream->signal, 1);
2380 }
2381
2382 pipe_ctx->stream->link->link_state_valid = true;
2383
2384 if (pipe_ctx->stream_res.tg->funcs->set_out_mux) {
2385 if (dp_is_128b_132b_signal(pipe_ctx))
2386 otg_out_dest = OUT_MUX_HPO_DP;
2387 else
2388 otg_out_dest = OUT_MUX_DIO;
2389 pipe_ctx->stream_res.tg->funcs->set_out_mux(pipe_ctx->stream_res.tg, otg_out_dest);
2390 }
2391
2392 link_hwss->setup_stream_attribute(pipe_ctx);
2393
2394 pipe_ctx->stream->apply_edp_fast_boot_optimization = false;
2395
2396 // Enable VPG before building infoframe
2397 if (vpg && vpg->funcs->vpg_poweron)
2398 vpg->funcs->vpg_poweron(vpg);
2399
2400 resource_build_info_frame(pipe_ctx);
2401 dc->hwss.update_info_frame(pipe_ctx);
2402
2403 if (dc_is_dp_signal(pipe_ctx->stream->signal))
2404 dp_trace_source_sequence(link, DPCD_SOURCE_SEQ_AFTER_UPDATE_INFO_FRAME);
2405
2406 /* Do not touch link on seamless boot optimization. */
2407 if (pipe_ctx->stream->apply_seamless_boot_optimization) {
2408 pipe_ctx->stream->dpms_off = false;
2409
2410 /* Still enable stream features & audio on seamless boot for DP external displays */
2411 if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT) {
2412 enable_stream_features(pipe_ctx);
2413 dc->hwss.enable_audio_stream(pipe_ctx);
2414 }
2415
2416 update_psp_stream_config(pipe_ctx, false);
2417 return;
2418 }
2419
2420 /* eDP lit up by bios already, no need to enable again. */
2421 if (pipe_ctx->stream->signal == SIGNAL_TYPE_EDP &&
2422 apply_edp_fast_boot_optimization &&
2423 !pipe_ctx->stream->timing.flags.DSC &&
2424 !pipe_ctx->next_odm_pipe) {
2425 pipe_ctx->stream->dpms_off = false;
2426 update_psp_stream_config(pipe_ctx, false);
2427 return;
2428 }
2429
2430 if (pipe_ctx->stream->dpms_off)
2431 return;
2432
2433 /* Have to setup DSC before DIG FE and BE are connected (which happens before the
2434 * link training). This is to make sure the bandwidth sent to DIG BE won't be
2435 * bigger than what the link and/or DIG BE can handle. VBID[6]/CompressedStream_flag
2436 * will be automatically set at a later time when the video is enabled
2437 * (DP_VID_STREAM_EN = 1).
2438 */
2439 if (pipe_ctx->stream->timing.flags.DSC) {
2440 if (dc_is_dp_signal(pipe_ctx->stream->signal) ||
2441 dc_is_virtual_signal(pipe_ctx->stream->signal))
2442 link_set_dsc_enable(pipe_ctx, true);
2443 }
2444
2445 status = enable_link(state, pipe_ctx);
2446
2447 if (status != DC_OK) {
2448 DC_LOG_WARNING("enabling link %u failed: %d\n",
2449 pipe_ctx->stream->link->link_index,
2450 status);
2451
2452 /* Abort stream enable *unless* the failure was due to
2453 * DP link training - some DP monitors will recover and
2454 * show the stream anyway. But MST displays can't proceed
2455 * without link training.
2456 */
2457 if (status != DC_FAIL_DP_LINK_TRAINING ||
2458 pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
2459 if (false == stream->link->link_status.link_active)
2460 disable_link(stream->link, &pipe_ctx->link_res,
2461 pipe_ctx->stream->signal);
2462 BREAK_TO_DEBUGGER();
2463 return;
2464 }
2465 }
2466
2467 /* turn off otg test pattern if enable */
2468 if (pipe_ctx->stream_res.tg->funcs->set_test_pattern)
2469 pipe_ctx->stream_res.tg->funcs->set_test_pattern(pipe_ctx->stream_res.tg,
2470 CONTROLLER_DP_TEST_PATTERN_VIDEOMODE,
2471 COLOR_DEPTH_UNDEFINED);
2472
2473 /* This second call is needed to reconfigure the DIG
2474 * as a workaround for the incorrect value being applied
2475 * from transmitter control.
2476 */
2477 if (!(dc_is_virtual_signal(pipe_ctx->stream->signal) ||
2478 dp_is_128b_132b_signal(pipe_ctx))) {
2479 struct stream_encoder *stream_enc = pipe_ctx->stream_res.stream_enc;
2480
2481 if (link_enc)
2482 link_enc->funcs->setup(
2483 link_enc,
2484 pipe_ctx->stream->signal);
2485
2486 if (stream_enc && stream_enc->funcs->dig_stream_enable)
2487 stream_enc->funcs->dig_stream_enable(
2488 stream_enc,
2489 pipe_ctx->stream->signal, 1);
2490
2491 }
2492
2493 dc->hwss.enable_stream(pipe_ctx);
2494
2495 /* Set DPS PPS SDP (AKA "info frames") */
2496 if (pipe_ctx->stream->timing.flags.DSC) {
2497 if (dc_is_dp_signal(pipe_ctx->stream->signal) ||
2498 dc_is_virtual_signal(pipe_ctx->stream->signal)) {
2499 dp_set_dsc_on_rx(pipe_ctx, true);
2500 link_set_dsc_pps_packet(pipe_ctx, true, true);
2501 }
2502 }
2503
2504 if (pipe_ctx->stream->link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA)
2505 allocate_usb4_bandwidth(pipe_ctx->stream);
2506
2507 if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
2508 allocate_mst_payload(pipe_ctx);
2509 else if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
2510 dp_is_128b_132b_signal(pipe_ctx))
2511 update_sst_payload(pipe_ctx, true);
2512
2513 dc->hwss.unblank_stream(pipe_ctx,
2514 &pipe_ctx->stream->link->cur_link_settings);
2515
2516 if (stream->sink_patches.delay_ignore_msa > 0)
2517 msleep(stream->sink_patches.delay_ignore_msa);
2518
2519 if (dc_is_dp_signal(pipe_ctx->stream->signal))
2520 enable_stream_features(pipe_ctx);
2521 update_psp_stream_config(pipe_ctx, false);
2522
2523 dc->hwss.enable_audio_stream(pipe_ctx);
2524
2525 if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) {
2526 set_avmute(pipe_ctx, false);
2527 }
2528 }
2529