1 /*
2 * Copyright 2012-15 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 "reg_helper.h"
28
29 #include "core_types.h"
30 #include "link_encoder.h"
31 #include "dcn31_dio_link_encoder.h"
32 #include "stream_encoder.h"
33 #include "dc_bios_types.h"
34
35 #include "gpio_service_interface.h"
36
37 #include "link_enc_cfg.h"
38 #include "dc_dmub_srv.h"
39 #include "dal_asic_id.h"
40 #include "link.h"
41
42 #define CTX \
43 enc10->base.ctx
44 #define DC_LOGGER \
45 enc10->base.ctx->logger
46
47 #define REG(reg)\
48 (enc10->link_regs->reg)
49
50 #undef FN
51 #define FN(reg_name, field_name) \
52 enc10->link_shift->field_name, enc10->link_mask->field_name
53
54 #define IND_REG(index) \
55 (enc10->link_regs->index)
56
57 #define AUX_REG(reg)\
58 (enc10->aux_regs->reg)
59
60 #define AUX_REG_READ(reg_name) \
61 dm_read_reg(CTX, AUX_REG(reg_name))
62
63 #define AUX_REG_WRITE(reg_name, val) \
64 dm_write_reg(CTX, AUX_REG(reg_name), val)
65
66 #ifndef MIN
67 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
68 #endif
69
phy_id_from_transmitter(enum transmitter t)70 static uint8_t phy_id_from_transmitter(enum transmitter t)
71 {
72 uint8_t phy_id;
73
74 switch (t) {
75 case TRANSMITTER_UNIPHY_A:
76 phy_id = 0;
77 break;
78 case TRANSMITTER_UNIPHY_B:
79 phy_id = 1;
80 break;
81 case TRANSMITTER_UNIPHY_C:
82 phy_id = 2;
83 break;
84 case TRANSMITTER_UNIPHY_D:
85 phy_id = 3;
86 break;
87 case TRANSMITTER_UNIPHY_E:
88 phy_id = 4;
89 break;
90 case TRANSMITTER_UNIPHY_F:
91 phy_id = 5;
92 break;
93 case TRANSMITTER_UNIPHY_G:
94 phy_id = 6;
95 break;
96 default:
97 phy_id = 0;
98 break;
99 }
100 return phy_id;
101 }
102
has_query_dp_alt(struct link_encoder * enc)103 static bool has_query_dp_alt(struct link_encoder *enc)
104 {
105 struct dc_dmub_srv *dc_dmub_srv = enc->ctx->dmub_srv;
106
107 if (enc->ctx->dce_version >= DCN_VERSION_3_15)
108 return true;
109
110 /* Supports development firmware and firmware >= 4.0.11 */
111 return dc_dmub_srv &&
112 !(dc_dmub_srv->dmub->fw_version >= DMUB_FW_VERSION(4, 0, 0) &&
113 dc_dmub_srv->dmub->fw_version <= DMUB_FW_VERSION(4, 0, 10));
114 }
115
query_dp_alt_from_dmub(struct link_encoder * enc,union dmub_rb_cmd * cmd)116 static bool query_dp_alt_from_dmub(struct link_encoder *enc,
117 union dmub_rb_cmd *cmd)
118 {
119 struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
120
121 memset(cmd, 0, sizeof(*cmd));
122 cmd->query_dp_alt.header.type = DMUB_CMD__VBIOS;
123 cmd->query_dp_alt.header.sub_type =
124 DMUB_CMD__VBIOS_TRANSMITTER_QUERY_DP_ALT;
125 cmd->query_dp_alt.header.payload_bytes = sizeof(cmd->query_dp_alt.data);
126 cmd->query_dp_alt.data.phy_id = phy_id_from_transmitter(enc10->base.transmitter);
127
128 if (!dc_wake_and_execute_dmub_cmd(enc->ctx, cmd, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY))
129 return false;
130
131 return true;
132 }
133
dcn31_link_encoder_set_dio_phy_mux(struct link_encoder * enc,enum encoder_type_select sel,uint32_t hpo_inst)134 void dcn31_link_encoder_set_dio_phy_mux(
135 struct link_encoder *enc,
136 enum encoder_type_select sel,
137 uint32_t hpo_inst)
138 {
139 struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
140
141 switch (enc->transmitter) {
142 case TRANSMITTER_UNIPHY_A:
143 if (sel == ENCODER_TYPE_HDMI_FRL)
144 REG_UPDATE(DIO_LINKA_CNTL,
145 HPO_HDMI_ENC_SEL, hpo_inst);
146 else if (sel == ENCODER_TYPE_DP_128B132B)
147 REG_UPDATE(DIO_LINKA_CNTL,
148 HPO_DP_ENC_SEL, hpo_inst);
149 REG_UPDATE(DIO_LINKA_CNTL,
150 ENC_TYPE_SEL, sel);
151 break;
152 case TRANSMITTER_UNIPHY_B:
153 if (sel == ENCODER_TYPE_HDMI_FRL)
154 REG_UPDATE(DIO_LINKB_CNTL,
155 HPO_HDMI_ENC_SEL, hpo_inst);
156 else if (sel == ENCODER_TYPE_DP_128B132B)
157 REG_UPDATE(DIO_LINKB_CNTL,
158 HPO_DP_ENC_SEL, hpo_inst);
159 REG_UPDATE(DIO_LINKB_CNTL,
160 ENC_TYPE_SEL, sel);
161 break;
162 case TRANSMITTER_UNIPHY_C:
163 if (sel == ENCODER_TYPE_HDMI_FRL)
164 REG_UPDATE(DIO_LINKC_CNTL,
165 HPO_HDMI_ENC_SEL, hpo_inst);
166 else if (sel == ENCODER_TYPE_DP_128B132B)
167 REG_UPDATE(DIO_LINKC_CNTL,
168 HPO_DP_ENC_SEL, hpo_inst);
169 REG_UPDATE(DIO_LINKC_CNTL,
170 ENC_TYPE_SEL, sel);
171 break;
172 case TRANSMITTER_UNIPHY_D:
173 if (sel == ENCODER_TYPE_HDMI_FRL)
174 REG_UPDATE(DIO_LINKD_CNTL,
175 HPO_HDMI_ENC_SEL, hpo_inst);
176 else if (sel == ENCODER_TYPE_DP_128B132B)
177 REG_UPDATE(DIO_LINKD_CNTL,
178 HPO_DP_ENC_SEL, hpo_inst);
179 REG_UPDATE(DIO_LINKD_CNTL,
180 ENC_TYPE_SEL, sel);
181 break;
182 case TRANSMITTER_UNIPHY_E:
183 if (sel == ENCODER_TYPE_HDMI_FRL)
184 REG_UPDATE(DIO_LINKE_CNTL,
185 HPO_HDMI_ENC_SEL, hpo_inst);
186 else if (sel == ENCODER_TYPE_DP_128B132B)
187 REG_UPDATE(DIO_LINKE_CNTL,
188 HPO_DP_ENC_SEL, hpo_inst);
189 REG_UPDATE(DIO_LINKE_CNTL,
190 ENC_TYPE_SEL, sel);
191 break;
192 case TRANSMITTER_UNIPHY_F:
193 if (sel == ENCODER_TYPE_HDMI_FRL)
194 REG_UPDATE(DIO_LINKF_CNTL,
195 HPO_HDMI_ENC_SEL, hpo_inst);
196 else if (sel == ENCODER_TYPE_DP_128B132B)
197 REG_UPDATE(DIO_LINKF_CNTL,
198 HPO_DP_ENC_SEL, hpo_inst);
199 REG_UPDATE(DIO_LINKF_CNTL,
200 ENC_TYPE_SEL, sel);
201 break;
202 default:
203 /* Do nothing */
204 break;
205 }
206 }
207
enc31_hw_init(struct link_encoder * enc)208 void enc31_hw_init(struct link_encoder *enc)
209 {
210 struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
211
212 /*
213 00 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__1to2 : 1/2
214 01 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__3to4 : 3/4
215 02 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__7to8 : 7/8
216 03 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__15to16 : 15/16
217 04 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__31to32 : 31/32
218 05 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__63to64 : 63/64
219 06 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__127to128 : 127/128
220 07 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__255to256 : 255/256
221 */
222
223 /*
224 AUX_REG_UPDATE_5(AUX_DPHY_RX_CONTROL0,
225 AUX_RX_START_WINDOW = 1 [6:4]
226 AUX_RX_RECEIVE_WINDOW = 1 default is 2 [10:8]
227 AUX_RX_HALF_SYM_DETECT_LEN = 1 [13:12] default is 1
228 AUX_RX_TRANSITION_FILTER_EN = 1 [16] default is 1
229 AUX_RX_ALLOW_BELOW_THRESHOLD_PHASE_DETECT [17] is 0 default is 0
230 AUX_RX_ALLOW_BELOW_THRESHOLD_START [18] is 1 default is 1
231 AUX_RX_ALLOW_BELOW_THRESHOLD_STOP [19] is 1 default is 1
232 AUX_RX_PHASE_DETECT_LEN, [21,20] = 0x3 default is 3
233 AUX_RX_DETECTION_THRESHOLD [30:28] = 1
234 */
235 // dmub will read AUX_DPHY_RX_CONTROL0/AUX_DPHY_TX_CONTROL from vbios table in dp_aux_init
236
237 //AUX_DPHY_TX_REF_CONTROL'AUX_TX_REF_DIV HW default is 0x32;
238 // Set AUX_TX_REF_DIV Divider to generate 2 MHz reference from refclk
239 // 27MHz -> 0xd
240 // 100MHz -> 0x32
241 // 48MHz -> 0x18
242
243 // Set TMDS_CTL0 to 1. This is a legacy setting.
244 REG_UPDATE(TMDS_CTL_BITS, TMDS_CTL0, 1);
245
246 dcn10_aux_initialize(enc10);
247 }
248
249 static const struct link_encoder_funcs dcn31_link_enc_funcs = {
250 .read_state = link_enc2_read_state,
251 .validate_output_with_stream =
252 dcn30_link_encoder_validate_output_with_stream,
253 .hw_init = enc31_hw_init,
254 .setup = dcn10_link_encoder_setup,
255 .enable_tmds_output = dcn10_link_encoder_enable_tmds_output,
256 .enable_dp_output = dcn31_link_encoder_enable_dp_output,
257 .enable_dp_mst_output = dcn31_link_encoder_enable_dp_mst_output,
258 .disable_output = dcn31_link_encoder_disable_output,
259 .dp_set_lane_settings = dcn10_link_encoder_dp_set_lane_settings,
260 .dp_set_phy_pattern = dcn10_link_encoder_dp_set_phy_pattern,
261 .update_mst_stream_allocation_table =
262 dcn10_link_encoder_update_mst_stream_allocation_table,
263 .psr_program_dp_dphy_fast_training =
264 dcn10_psr_program_dp_dphy_fast_training,
265 .psr_program_secondary_packet = dcn10_psr_program_secondary_packet,
266 .connect_dig_be_to_fe = dcn10_link_encoder_connect_dig_be_to_fe,
267 .enable_hpd = dcn10_link_encoder_enable_hpd,
268 .disable_hpd = dcn10_link_encoder_disable_hpd,
269 .is_dig_enabled = dcn10_is_dig_enabled,
270 .destroy = dcn10_link_encoder_destroy,
271 .fec_set_enable = enc2_fec_set_enable,
272 .fec_set_ready = enc2_fec_set_ready,
273 .fec_is_active = enc2_fec_is_active,
274 .get_dig_frontend = dcn10_get_dig_frontend,
275 .get_dig_mode = dcn10_get_dig_mode,
276 .is_in_alt_mode = dcn31_link_encoder_is_in_alt_mode,
277 .get_max_link_cap = dcn31_link_encoder_get_max_link_cap,
278 .set_dio_phy_mux = dcn31_link_encoder_set_dio_phy_mux,
279 };
280
dcn31_link_encoder_construct(struct dcn20_link_encoder * enc20,const struct encoder_init_data * init_data,const struct encoder_feature_support * enc_features,const struct dcn10_link_enc_registers * link_regs,const struct dcn10_link_enc_aux_registers * aux_regs,const struct dcn10_link_enc_hpd_registers * hpd_regs,const struct dcn10_link_enc_shift * link_shift,const struct dcn10_link_enc_mask * link_mask)281 void dcn31_link_encoder_construct(
282 struct dcn20_link_encoder *enc20,
283 const struct encoder_init_data *init_data,
284 const struct encoder_feature_support *enc_features,
285 const struct dcn10_link_enc_registers *link_regs,
286 const struct dcn10_link_enc_aux_registers *aux_regs,
287 const struct dcn10_link_enc_hpd_registers *hpd_regs,
288 const struct dcn10_link_enc_shift *link_shift,
289 const struct dcn10_link_enc_mask *link_mask)
290 {
291 struct bp_encoder_cap_info bp_cap_info = {0};
292 const struct dc_vbios_funcs *bp_funcs = init_data->ctx->dc_bios->funcs;
293 enum bp_result result = BP_RESULT_OK;
294 struct dcn10_link_encoder *enc10 = &enc20->enc10;
295
296 enc10->base.funcs = &dcn31_link_enc_funcs;
297 enc10->base.ctx = init_data->ctx;
298 enc10->base.id = init_data->encoder;
299
300 enc10->base.hpd_source = init_data->hpd_source;
301 enc10->base.connector = init_data->connector;
302
303 enc10->base.preferred_engine = ENGINE_ID_UNKNOWN;
304
305 enc10->base.features = *enc_features;
306
307 enc10->base.transmitter = init_data->transmitter;
308
309 /* set the flag to indicate whether driver poll the I2C data pin
310 * while doing the DP sink detect
311 */
312
313 /* if (dal_adapter_service_is_feature_supported(as,
314 FEATURE_DP_SINK_DETECT_POLL_DATA_PIN))
315 enc10->base.features.flags.bits.
316 DP_SINK_DETECT_POLL_DATA_PIN = true;*/
317
318 enc10->base.output_signals =
319 SIGNAL_TYPE_DVI_SINGLE_LINK |
320 SIGNAL_TYPE_DVI_DUAL_LINK |
321 SIGNAL_TYPE_LVDS |
322 SIGNAL_TYPE_DISPLAY_PORT |
323 SIGNAL_TYPE_DISPLAY_PORT_MST |
324 SIGNAL_TYPE_EDP |
325 SIGNAL_TYPE_HDMI_TYPE_A;
326
327 /* For DCE 8.0 and 8.1, by design, UNIPHY is hardwired to DIG_BE.
328 * SW always assign DIG_FE 1:1 mapped to DIG_FE for non-MST UNIPHY.
329 * SW assign DIG_FE to non-MST UNIPHY first and MST last. So prefer
330 * DIG is per UNIPHY and used by SST DP, eDP, HDMI, DVI and LVDS.
331 * Prefer DIG assignment is decided by board design.
332 * For DCE 8.0, there are only max 6 UNIPHYs, we assume board design
333 * and VBIOS will filter out 7 UNIPHY for DCE 8.0.
334 * By this, adding DIGG should not hurt DCE 8.0.
335 * This will let DCE 8.1 share DCE 8.0 as much as possible
336 */
337
338 enc10->link_regs = link_regs;
339 enc10->aux_regs = aux_regs;
340 enc10->hpd_regs = hpd_regs;
341 enc10->link_shift = link_shift;
342 enc10->link_mask = link_mask;
343
344 switch (enc10->base.transmitter) {
345 case TRANSMITTER_UNIPHY_A:
346 enc10->base.preferred_engine = ENGINE_ID_DIGA;
347 break;
348 case TRANSMITTER_UNIPHY_B:
349 enc10->base.preferred_engine = ENGINE_ID_DIGB;
350 break;
351 case TRANSMITTER_UNIPHY_C:
352 enc10->base.preferred_engine = ENGINE_ID_DIGC;
353 break;
354 case TRANSMITTER_UNIPHY_D:
355 enc10->base.preferred_engine = ENGINE_ID_DIGD;
356 break;
357 case TRANSMITTER_UNIPHY_E:
358 enc10->base.preferred_engine = ENGINE_ID_DIGE;
359 break;
360 case TRANSMITTER_UNIPHY_F:
361 enc10->base.preferred_engine = ENGINE_ID_DIGF;
362 break;
363 default:
364 ASSERT_CRITICAL(false);
365 enc10->base.preferred_engine = ENGINE_ID_UNKNOWN;
366 }
367
368 /* default to one to mirror Windows behavior */
369 enc10->base.features.flags.bits.HDMI_6GB_EN = 1;
370
371 result = bp_funcs->get_encoder_cap_info(enc10->base.ctx->dc_bios,
372 enc10->base.id, &bp_cap_info);
373
374 /* Override features with DCE-specific values */
375 if (result == BP_RESULT_OK) {
376 enc10->base.features.flags.bits.IS_HBR2_CAPABLE =
377 bp_cap_info.DP_HBR2_EN;
378 enc10->base.features.flags.bits.IS_HBR3_CAPABLE =
379 bp_cap_info.DP_HBR3_EN;
380 enc10->base.features.flags.bits.HDMI_6GB_EN = bp_cap_info.HDMI_6GB_EN;
381 enc10->base.features.flags.bits.IS_DP2_CAPABLE = bp_cap_info.IS_DP2_CAPABLE;
382 enc10->base.features.flags.bits.IS_UHBR10_CAPABLE = bp_cap_info.DP_UHBR10_EN;
383 enc10->base.features.flags.bits.IS_UHBR13_5_CAPABLE = bp_cap_info.DP_UHBR13_5_EN;
384 enc10->base.features.flags.bits.IS_UHBR20_CAPABLE = bp_cap_info.DP_UHBR20_EN;
385 enc10->base.features.flags.bits.DP_IS_USB_C =
386 bp_cap_info.DP_IS_USB_C;
387 } else {
388 DC_LOG_WARNING("%s: Failed to get encoder_cap_info from VBIOS with error code %d!\n",
389 __func__,
390 result);
391 }
392 if (enc10->base.ctx->dc->debug.hdmi20_disable) {
393 enc10->base.features.flags.bits.HDMI_6GB_EN = 0;
394 }
395 }
396
dcn31_link_encoder_construct_minimal(struct dcn20_link_encoder * enc20,struct dc_context * ctx,const struct encoder_feature_support * enc_features,const struct dcn10_link_enc_registers * link_regs,enum engine_id eng_id)397 void dcn31_link_encoder_construct_minimal(
398 struct dcn20_link_encoder *enc20,
399 struct dc_context *ctx,
400 const struct encoder_feature_support *enc_features,
401 const struct dcn10_link_enc_registers *link_regs,
402 enum engine_id eng_id)
403 {
404 struct dcn10_link_encoder *enc10 = &enc20->enc10;
405
406 enc10->base.funcs = &dcn31_link_enc_funcs;
407 enc10->base.ctx = ctx;
408 enc10->base.id.type = OBJECT_TYPE_ENCODER;
409 enc10->base.hpd_source = HPD_SOURCEID_UNKNOWN;
410 enc10->base.connector.type = OBJECT_TYPE_CONNECTOR;
411 enc10->base.preferred_engine = eng_id;
412 enc10->base.features = *enc_features;
413 enc10->base.transmitter = TRANSMITTER_UNKNOWN;
414 enc10->link_regs = link_regs;
415
416 enc10->base.output_signals =
417 SIGNAL_TYPE_DISPLAY_PORT |
418 SIGNAL_TYPE_DISPLAY_PORT_MST |
419 SIGNAL_TYPE_EDP;
420 }
421
422 /* DPIA equivalent of link_transmitter_control. */
link_dpia_control(struct dc_context * dc_ctx,struct dmub_cmd_dig_dpia_control_data * dpia_control)423 static bool link_dpia_control(struct dc_context *dc_ctx,
424 struct dmub_cmd_dig_dpia_control_data *dpia_control)
425 {
426 union dmub_rb_cmd cmd;
427
428 memset(&cmd, 0, sizeof(cmd));
429
430 cmd.dig1_dpia_control.header.type = DMUB_CMD__DPIA;
431 cmd.dig1_dpia_control.header.sub_type =
432 DMUB_CMD__DPIA_DIG1_DPIA_CONTROL;
433 cmd.dig1_dpia_control.header.payload_bytes =
434 sizeof(cmd.dig1_dpia_control) -
435 sizeof(cmd.dig1_dpia_control.header);
436
437 cmd.dig1_dpia_control.dpia_control = *dpia_control;
438
439 dc_wake_and_execute_dmub_cmd(dc_ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
440
441 return true;
442 }
443
link_encoder_disable(struct dcn10_link_encoder * enc10)444 static void link_encoder_disable(struct dcn10_link_encoder *enc10)
445 {
446 /* reset training complete */
447 REG_UPDATE(DP_LINK_CNTL, DP_LINK_TRAINING_COMPLETE, 0);
448 }
449
dcn31_link_encoder_enable_dp_output(struct link_encoder * enc,const struct dc_link_settings * link_settings,enum clock_source_id clock_source)450 void dcn31_link_encoder_enable_dp_output(
451 struct link_encoder *enc,
452 const struct dc_link_settings *link_settings,
453 enum clock_source_id clock_source)
454 {
455 struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
456
457 /* Enable transmitter and encoder. */
458 if (!link_enc_cfg_is_transmitter_mappable(enc->ctx->dc, enc)) {
459
460 DC_LOG_DEBUG("%s: enc_id(%d)\n", __func__, enc->preferred_engine);
461 dcn20_link_encoder_enable_dp_output(enc, link_settings, clock_source);
462
463 } else {
464
465 struct dmub_cmd_dig_dpia_control_data dpia_control = { 0 };
466 struct dc_link *link;
467
468 link = link_enc_cfg_get_link_using_link_enc(enc->ctx->dc, enc->preferred_engine);
469
470 enc1_configure_encoder(enc10, link_settings);
471
472 dpia_control.action = (uint8_t)TRANSMITTER_CONTROL_ENABLE;
473 dpia_control.enc_id = enc->preferred_engine;
474 dpia_control.mode_laneset.digmode = 0; /* 0 for SST; 5 for MST */
475 dpia_control.lanenum = (uint8_t)link_settings->lane_count;
476 dpia_control.symclk_10khz = link_settings->link_rate *
477 LINK_RATE_REF_FREQ_IN_KHZ / 10;
478 /* DIG_BE_CNTL.DIG_HPD_SELECT set to 5 (hpdsel - 1) to indicate HPD pin
479 * unused by DPIA.
480 */
481 dpia_control.hpdsel = 6;
482
483 if (link) {
484 dpia_control.dpia_id = link->ddc_hw_inst;
485 dpia_control.fec_rdy = link->dc->link_srv->dp_should_enable_fec(link);
486 } else {
487 DC_LOG_ERROR("%s: Failed to execute DPIA enable DMUB command.\n", __func__);
488 BREAK_TO_DEBUGGER();
489 return;
490 }
491
492 DC_LOG_DEBUG("%s: DPIA(%d) - enc_id(%d)\n", __func__, dpia_control.dpia_id, dpia_control.enc_id);
493 link_dpia_control(enc->ctx, &dpia_control);
494 }
495 }
496
dcn31_link_encoder_enable_dp_mst_output(struct link_encoder * enc,const struct dc_link_settings * link_settings,enum clock_source_id clock_source)497 void dcn31_link_encoder_enable_dp_mst_output(
498 struct link_encoder *enc,
499 const struct dc_link_settings *link_settings,
500 enum clock_source_id clock_source)
501 {
502 struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
503
504 /* Enable transmitter and encoder. */
505 if (!link_enc_cfg_is_transmitter_mappable(enc->ctx->dc, enc)) {
506
507 DC_LOG_DEBUG("%s: enc_id(%d)\n", __func__, enc->preferred_engine);
508 dcn10_link_encoder_enable_dp_mst_output(enc, link_settings, clock_source);
509
510 } else {
511
512 struct dmub_cmd_dig_dpia_control_data dpia_control = { 0 };
513 struct dc_link *link;
514
515 link = link_enc_cfg_get_link_using_link_enc(enc->ctx->dc, enc->preferred_engine);
516
517 enc1_configure_encoder(enc10, link_settings);
518
519 dpia_control.action = (uint8_t)TRANSMITTER_CONTROL_ENABLE;
520 dpia_control.enc_id = enc->preferred_engine;
521 dpia_control.mode_laneset.digmode = 5; /* 0 for SST; 5 for MST */
522 dpia_control.lanenum = (uint8_t)link_settings->lane_count;
523 dpia_control.symclk_10khz = link_settings->link_rate *
524 LINK_RATE_REF_FREQ_IN_KHZ / 10;
525 /* DIG_BE_CNTL.DIG_HPD_SELECT set to 5 (hpdsel - 1) to indicate HPD pin
526 * unused by DPIA.
527 */
528 dpia_control.hpdsel = 6;
529
530 if (link) {
531 dpia_control.dpia_id = link->ddc_hw_inst;
532 dpia_control.fec_rdy = link->dc->link_srv->dp_should_enable_fec(link);
533 } else {
534 DC_LOG_ERROR("%s: Failed to execute DPIA enable DMUB command.\n", __func__);
535 BREAK_TO_DEBUGGER();
536 return;
537 }
538
539 DC_LOG_DEBUG("%s: DPIA(%d) - enc_id(%d)\n", __func__, dpia_control.dpia_id, dpia_control.enc_id);
540 link_dpia_control(enc->ctx, &dpia_control);
541 }
542 }
543
dcn31_link_encoder_disable_output(struct link_encoder * enc,enum signal_type signal)544 void dcn31_link_encoder_disable_output(
545 struct link_encoder *enc,
546 enum signal_type signal)
547 {
548 struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
549
550 /* Disable transmitter and encoder. */
551 if (!link_enc_cfg_is_transmitter_mappable(enc->ctx->dc, enc)) {
552
553 DC_LOG_DEBUG("%s: enc_id(%d)\n", __func__, enc->preferred_engine);
554 dcn10_link_encoder_disable_output(enc, signal);
555
556 } else {
557
558 struct dmub_cmd_dig_dpia_control_data dpia_control = { 0 };
559 struct dc_link *link;
560
561 if (enc->funcs->is_dig_enabled && !enc->funcs->is_dig_enabled(enc))
562 return;
563
564 link = link_enc_cfg_get_link_using_link_enc(enc->ctx->dc, enc->preferred_engine);
565
566 dpia_control.action = (uint8_t)TRANSMITTER_CONTROL_DISABLE;
567 dpia_control.enc_id = enc->preferred_engine;
568 if (signal == SIGNAL_TYPE_DISPLAY_PORT) {
569 dpia_control.mode_laneset.digmode = 0; /* 0 for SST; 5 for MST */
570 } else if (signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
571 dpia_control.mode_laneset.digmode = 5; /* 0 for SST; 5 for MST */
572 } else {
573 DC_LOG_ERROR("%s: USB4 DPIA only supports DisplayPort.\n", __func__);
574 BREAK_TO_DEBUGGER();
575 }
576
577 if (link) {
578 dpia_control.dpia_id = link->ddc_hw_inst;
579 } else {
580 DC_LOG_ERROR("%s: Failed to execute DPIA enable DMUB command.\n", __func__);
581 BREAK_TO_DEBUGGER();
582 return;
583 }
584
585 DC_LOG_DEBUG("%s: DPIA(%d) - enc_id(%d)\n", __func__, dpia_control.dpia_id, dpia_control.enc_id);
586 link_dpia_control(enc->ctx, &dpia_control);
587
588 link_encoder_disable(enc10);
589 }
590 }
591
dcn31_link_encoder_is_in_alt_mode(struct link_encoder * enc)592 bool dcn31_link_encoder_is_in_alt_mode(struct link_encoder *enc)
593 {
594 struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
595 union dmub_rb_cmd cmd;
596 uint32_t dp_alt_mode_disable;
597
598 /* Only applicable to USB-C PHY. */
599 if (!enc->features.flags.bits.DP_IS_USB_C)
600 return false;
601
602 /*
603 * Use the new interface from DMCUB if available.
604 * Avoids hanging the RDCPSPIPE if DMCUB wasn't already running.
605 */
606 if (has_query_dp_alt(enc)) {
607 if (!query_dp_alt_from_dmub(enc, &cmd))
608 return false;
609
610 return (cmd.query_dp_alt.data.is_dp_alt_disable == 0);
611 }
612
613 /* Legacy path, avoid if possible. */
614 if (enc->ctx->asic_id.hw_internal_rev != YELLOW_CARP_B0) {
615 REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DISABLE,
616 &dp_alt_mode_disable);
617 } else {
618 /*
619 * B0 phys use a new set of registers to check whether alt mode is disabled.
620 * if value == 1 alt mode is disabled, otherwise it is enabled.
621 */
622 if ((enc10->base.transmitter == TRANSMITTER_UNIPHY_A) ||
623 (enc10->base.transmitter == TRANSMITTER_UNIPHY_B) ||
624 (enc10->base.transmitter == TRANSMITTER_UNIPHY_E)) {
625 REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DISABLE,
626 &dp_alt_mode_disable);
627 } else {
628 REG_GET(RDPCSPIPE_PHY_CNTL6, RDPCS_PHY_DPALT_DISABLE,
629 &dp_alt_mode_disable);
630 }
631 }
632
633 return (dp_alt_mode_disable == 0);
634 }
635
dcn31_link_encoder_get_max_link_cap(struct link_encoder * enc,struct dc_link_settings * link_settings)636 void dcn31_link_encoder_get_max_link_cap(struct link_encoder *enc, struct dc_link_settings *link_settings)
637 {
638 struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
639 union dmub_rb_cmd cmd;
640 uint32_t is_in_usb_c_dp4_mode = 0;
641
642 dcn10_link_encoder_get_max_link_cap(enc, link_settings);
643
644 /* Take the link cap directly if not USB */
645 if (!enc->features.flags.bits.DP_IS_USB_C)
646 return;
647
648 /*
649 * Use the new interface from DMCUB if available.
650 * Avoids hanging the RDCPSPIPE if DMCUB wasn't already running.
651 */
652 if (has_query_dp_alt(enc)) {
653 if (!query_dp_alt_from_dmub(enc, &cmd))
654 return;
655
656 if (cmd.query_dp_alt.data.is_usb &&
657 cmd.query_dp_alt.data.is_dp4 == 0)
658 link_settings->lane_count = MIN(LANE_COUNT_TWO, link_settings->lane_count);
659
660 return;
661 }
662
663 /* Legacy path, avoid if possible. */
664 if (enc->ctx->asic_id.hw_internal_rev != YELLOW_CARP_B0) {
665 REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DP4,
666 &is_in_usb_c_dp4_mode);
667 } else {
668 if ((enc10->base.transmitter == TRANSMITTER_UNIPHY_A) ||
669 (enc10->base.transmitter == TRANSMITTER_UNIPHY_B) ||
670 (enc10->base.transmitter == TRANSMITTER_UNIPHY_E)) {
671 REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DP4,
672 &is_in_usb_c_dp4_mode);
673 } else {
674 REG_GET(RDPCSPIPE_PHY_CNTL6, RDPCS_PHY_DPALT_DP4,
675 &is_in_usb_c_dp4_mode);
676 }
677 }
678
679 if (!is_in_usb_c_dp4_mode)
680 link_settings->lane_count = MIN(LANE_COUNT_TWO, link_settings->lane_count);
681 }
682