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 creation/destruction of link structure.
28 */
29 #include "link_factory.h"
30 #include "link_detection.h"
31 #include "link_resource.h"
32 #include "link_validation.h"
33 #include "link_dpms.h"
34 #include "accessories/link_dp_cts.h"
35 #include "accessories/link_dp_trace.h"
36 #include "protocols/link_ddc.h"
37 #include "protocols/link_dp_capability.h"
38 #include "protocols/link_dp_dpia_bw.h"
39 #include "protocols/link_dp_dpia.h"
40 #include "protocols/link_dp_irq_handler.h"
41 #include "protocols/link_dp_phy.h"
42 #include "protocols/link_dp_training.h"
43 #include "protocols/link_edp_panel_control.h"
44 #include "protocols/link_hpd.h"
45 #include "gpio_service_interface.h"
46 #include "atomfirmware.h"
47
48 #define DC_LOGGER \
49 dc_ctx->logger
50 #define DC_LOGGER_INIT(logger)
51
52 #define LINK_INFO(...) \
53 DC_LOG_HW_HOTPLUG( \
54 __VA_ARGS__)
55
56 /* link factory owns the creation/destruction of link structures. */
construct_link_service_factory(struct link_service * link_srv)57 static void construct_link_service_factory(struct link_service *link_srv)
58 {
59
60 link_srv->create_link = link_create;
61 link_srv->destroy_link = link_destroy;
62 }
63
64 /* link_detection manages link detection states and receiver states by using
65 * various link protocols. It also provides helper functions to interpret
66 * certain capabilities or status based on the states it manages or retrieve
67 * them directly from connected receivers.
68 */
construct_link_service_detection(struct link_service * link_srv)69 static void construct_link_service_detection(struct link_service *link_srv)
70 {
71 link_srv->detect_link = link_detect;
72 link_srv->detect_connection_type = link_detect_connection_type;
73 link_srv->add_remote_sink = link_add_remote_sink;
74 link_srv->remove_remote_sink = link_remove_remote_sink;
75 link_srv->get_hpd_state = link_get_hpd_state;
76 link_srv->get_hpd_gpio = link_get_hpd_gpio;
77 link_srv->enable_hpd = link_enable_hpd;
78 link_srv->disable_hpd = link_disable_hpd;
79 link_srv->enable_hpd_filter = link_enable_hpd_filter;
80 link_srv->reset_cur_dp_mst_topology = link_reset_cur_dp_mst_topology;
81 link_srv->get_status = link_get_status;
82 link_srv->is_hdcp1x_supported = link_is_hdcp14;
83 link_srv->is_hdcp2x_supported = link_is_hdcp22;
84 link_srv->clear_dprx_states = link_clear_dprx_states;
85 }
86
87 /* link resource implements accessors to link resource. */
construct_link_service_resource(struct link_service * link_srv)88 static void construct_link_service_resource(struct link_service *link_srv)
89 {
90 link_srv->get_cur_res_map = link_get_cur_res_map;
91 link_srv->restore_res_map = link_restore_res_map;
92 link_srv->get_cur_link_res = link_get_cur_link_res;
93 }
94
95 /* link validation owns timing validation against various link limitations. (ex.
96 * link bandwidth, receiver capability or our hardware capability) It also
97 * provides helper functions exposing bandwidth formulas used in validation.
98 */
construct_link_service_validation(struct link_service * link_srv)99 static void construct_link_service_validation(struct link_service *link_srv)
100 {
101 link_srv->validate_mode_timing = link_validate_mode_timing;
102 link_srv->dp_link_bandwidth_kbps = dp_link_bandwidth_kbps;
103 link_srv->validate_dpia_bandwidth = link_validate_dpia_bandwidth;
104 link_srv->dp_required_hblank_size_bytes = dp_required_hblank_size_bytes;
105 }
106
107 /* link dpms owns the programming sequence of stream's dpms state associated
108 * with the link and link's enable/disable sequences as result of the stream's
109 * dpms state change.
110 */
construct_link_service_dpms(struct link_service * link_srv)111 static void construct_link_service_dpms(struct link_service *link_srv)
112 {
113 link_srv->set_dpms_on = link_set_dpms_on;
114 link_srv->set_dpms_off = link_set_dpms_off;
115 link_srv->resume = link_resume;
116 link_srv->blank_all_dp_displays = link_blank_all_dp_displays;
117 link_srv->blank_all_edp_displays = link_blank_all_edp_displays;
118 link_srv->blank_dp_stream = link_blank_dp_stream;
119 link_srv->increase_mst_payload = link_increase_mst_payload;
120 link_srv->reduce_mst_payload = link_reduce_mst_payload;
121 link_srv->set_dsc_on_stream = link_set_dsc_on_stream;
122 link_srv->set_dsc_enable = link_set_dsc_enable;
123 link_srv->update_dsc_config = link_update_dsc_config;
124 }
125
126 /* link ddc implements generic display communication protocols such as i2c, aux
127 * and scdc. It should not contain any specific applications of these
128 * protocols such as display capability query, detection, or handshaking such as
129 * link training.
130 */
construct_link_service_ddc(struct link_service * link_srv)131 static void construct_link_service_ddc(struct link_service *link_srv)
132 {
133 link_srv->create_ddc_service = link_create_ddc_service;
134 link_srv->destroy_ddc_service = link_destroy_ddc_service;
135 link_srv->query_ddc_data = link_query_ddc_data;
136 link_srv->aux_transfer_raw = link_aux_transfer_raw;
137 link_srv->configure_fixed_vs_pe_retimer = link_configure_fixed_vs_pe_retimer;
138 link_srv->aux_transfer_with_retries_no_mutex =
139 link_aux_transfer_with_retries_no_mutex;
140 link_srv->is_in_aux_transaction_mode = link_is_in_aux_transaction_mode;
141 link_srv->get_aux_defer_delay = link_get_aux_defer_delay;
142 }
143
144 /* link dp capability implements dp specific link capability retrieval sequence.
145 * It is responsible for retrieving, parsing, overriding, deciding capability
146 * obtained from dp link. Link capability consists of encoders, DPRXs, cables,
147 * retimers, usb and all other possible backend capabilities.
148 */
construct_link_service_dp_capability(struct link_service * link_srv)149 static void construct_link_service_dp_capability(struct link_service *link_srv)
150 {
151 link_srv->dp_is_sink_present = dp_is_sink_present;
152 link_srv->dp_is_fec_supported = dp_is_fec_supported;
153 link_srv->dp_is_128b_132b_signal = dp_is_128b_132b_signal;
154 link_srv->dp_get_max_link_enc_cap = dp_get_max_link_enc_cap;
155 link_srv->dp_get_verified_link_cap = dp_get_verified_link_cap;
156 link_srv->dp_get_encoding_format = link_dp_get_encoding_format;
157 link_srv->dp_should_enable_fec = dp_should_enable_fec;
158 link_srv->dp_decide_link_settings = link_decide_link_settings;
159 link_srv->mst_decide_link_encoding_format =
160 mst_decide_link_encoding_format;
161 link_srv->edp_decide_link_settings = edp_decide_link_settings;
162 link_srv->bw_kbps_from_raw_frl_link_rate_data =
163 link_bw_kbps_from_raw_frl_link_rate_data;
164 link_srv->dp_overwrite_extended_receiver_cap =
165 dp_overwrite_extended_receiver_cap;
166 link_srv->dp_decide_lttpr_mode = dp_decide_lttpr_mode;
167 }
168
169 /* link dp phy/dpia implements basic dp phy/dpia functionality such as
170 * enable/disable output and set lane/drive settings. It is responsible for
171 * maintaining and update software state representing current phy/dpia status
172 * such as current link settings.
173 */
construct_link_service_dp_phy_or_dpia(struct link_service * link_srv)174 static void construct_link_service_dp_phy_or_dpia(struct link_service *link_srv)
175 {
176 link_srv->dpia_handle_usb4_bandwidth_allocation_for_link =
177 dpia_handle_usb4_bandwidth_allocation_for_link;
178 link_srv->dpia_handle_bw_alloc_response = dpia_handle_bw_alloc_response;
179 link_srv->dp_set_drive_settings = dp_set_drive_settings;
180 link_srv->dpcd_write_rx_power_ctrl = dpcd_write_rx_power_ctrl;
181 }
182
183 /* link dp irq handler implements DP HPD short pulse handling sequence according
184 * to DP specifications
185 */
construct_link_service_dp_irq_handler(struct link_service * link_srv)186 static void construct_link_service_dp_irq_handler(struct link_service *link_srv)
187 {
188 link_srv->dp_parse_link_loss_status = dp_parse_link_loss_status;
189 link_srv->dp_should_allow_hpd_rx_irq = dp_should_allow_hpd_rx_irq;
190 link_srv->dp_handle_link_loss = dp_handle_link_loss;
191 link_srv->dp_read_hpd_rx_irq_data = dp_read_hpd_rx_irq_data;
192 link_srv->dp_handle_hpd_rx_irq = dp_handle_hpd_rx_irq;
193 }
194
195 /* link edp panel control implements retrieval and configuration of eDP panel
196 * features such as PSR and ABM and it also manages specs defined eDP panel
197 * power sequences.
198 */
construct_link_service_edp_panel_control(struct link_service * link_srv)199 static void construct_link_service_edp_panel_control(struct link_service *link_srv)
200 {
201 link_srv->edp_panel_backlight_power_on = edp_panel_backlight_power_on;
202 link_srv->edp_get_backlight_level = edp_get_backlight_level;
203 link_srv->edp_get_backlight_level_nits = edp_get_backlight_level_nits;
204 link_srv->edp_set_backlight_level = edp_set_backlight_level;
205 link_srv->edp_set_backlight_level_nits = edp_set_backlight_level_nits;
206 link_srv->edp_get_target_backlight_pwm = edp_get_target_backlight_pwm;
207 link_srv->edp_get_psr_state = edp_get_psr_state;
208 link_srv->edp_set_psr_allow_active = edp_set_psr_allow_active;
209 link_srv->edp_setup_psr = edp_setup_psr;
210 link_srv->edp_set_sink_vtotal_in_psr_active =
211 edp_set_sink_vtotal_in_psr_active;
212 link_srv->edp_get_psr_residency = edp_get_psr_residency;
213
214 link_srv->edp_get_replay_state = edp_get_replay_state;
215 link_srv->edp_set_replay_allow_active = edp_set_replay_allow_active;
216 link_srv->edp_setup_replay = edp_setup_replay;
217 link_srv->edp_send_replay_cmd = edp_send_replay_cmd;
218 link_srv->edp_set_coasting_vtotal = edp_set_coasting_vtotal;
219 link_srv->edp_replay_residency = edp_replay_residency;
220 link_srv->edp_set_replay_power_opt_and_coasting_vtotal = edp_set_replay_power_opt_and_coasting_vtotal;
221
222 link_srv->edp_wait_for_t12 = edp_wait_for_t12;
223 link_srv->edp_is_ilr_optimization_required =
224 edp_is_ilr_optimization_required;
225 link_srv->edp_backlight_enable_aux = edp_backlight_enable_aux;
226 link_srv->edp_add_delay_for_T9 = edp_add_delay_for_T9;
227 link_srv->edp_receiver_ready_T9 = edp_receiver_ready_T9;
228 link_srv->edp_receiver_ready_T7 = edp_receiver_ready_T7;
229 link_srv->edp_power_alpm_dpcd_enable = edp_power_alpm_dpcd_enable;
230 link_srv->edp_set_panel_power = edp_set_panel_power;
231 }
232
233 /* link dp cts implements dp compliance test automation protocols and manual
234 * testing interfaces for debugging and certification purpose.
235 */
construct_link_service_dp_cts(struct link_service * link_srv)236 static void construct_link_service_dp_cts(struct link_service *link_srv)
237 {
238 link_srv->dp_handle_automated_test = dp_handle_automated_test;
239 link_srv->dp_set_test_pattern = dp_set_test_pattern;
240 link_srv->dp_set_preferred_link_settings =
241 dp_set_preferred_link_settings;
242 link_srv->dp_set_preferred_training_settings =
243 dp_set_preferred_training_settings;
244 }
245
246 /* link dp trace implements tracing interfaces for tracking major dp sequences
247 * including execution status and timestamps
248 */
construct_link_service_dp_trace(struct link_service * link_srv)249 static void construct_link_service_dp_trace(struct link_service *link_srv)
250 {
251 link_srv->dp_trace_is_initialized = dp_trace_is_initialized;
252 link_srv->dp_trace_set_is_logged_flag = dp_trace_set_is_logged_flag;
253 link_srv->dp_trace_is_logged = dp_trace_is_logged;
254 link_srv->dp_trace_get_lt_end_timestamp = dp_trace_get_lt_end_timestamp;
255 link_srv->dp_trace_get_lt_counts = dp_trace_get_lt_counts;
256 link_srv->dp_trace_get_link_loss_count = dp_trace_get_link_loss_count;
257 link_srv->dp_trace_set_edp_power_timestamp =
258 dp_trace_set_edp_power_timestamp;
259 link_srv->dp_trace_get_edp_poweron_timestamp =
260 dp_trace_get_edp_poweron_timestamp;
261 link_srv->dp_trace_get_edp_poweroff_timestamp =
262 dp_trace_get_edp_poweroff_timestamp;
263 link_srv->dp_trace_source_sequence = dp_trace_source_sequence;
264 }
265
construct_link_service(struct link_service * link_srv)266 static void construct_link_service(struct link_service *link_srv)
267 {
268 /* All link service functions should fall under some sub categories.
269 * If a new function doesn't perfectly fall under an existing sub
270 * category, it must be that you are either adding a whole new aspect of
271 * responsibility to link service or something doesn't belong to link
272 * service. In that case please contact the arch owner to arrange a
273 * design review meeting.
274 */
275 construct_link_service_factory(link_srv);
276 construct_link_service_detection(link_srv);
277 construct_link_service_resource(link_srv);
278 construct_link_service_validation(link_srv);
279 construct_link_service_dpms(link_srv);
280 construct_link_service_ddc(link_srv);
281 construct_link_service_dp_capability(link_srv);
282 construct_link_service_dp_phy_or_dpia(link_srv);
283 construct_link_service_dp_irq_handler(link_srv);
284 construct_link_service_edp_panel_control(link_srv);
285 construct_link_service_dp_cts(link_srv);
286 construct_link_service_dp_trace(link_srv);
287 }
288
link_create_link_service(void)289 struct link_service *link_create_link_service(void)
290 {
291 struct link_service *link_srv = kzalloc(sizeof(*link_srv), GFP_KERNEL);
292
293 if (link_srv == NULL)
294 goto fail;
295
296 construct_link_service(link_srv);
297
298 return link_srv;
299 fail:
300 return NULL;
301 }
302
link_destroy_link_service(struct link_service ** link_srv)303 void link_destroy_link_service(struct link_service **link_srv)
304 {
305 kfree(*link_srv);
306 *link_srv = NULL;
307 }
308
translate_encoder_to_transmitter(struct graphics_object_id encoder)309 static enum transmitter translate_encoder_to_transmitter(
310 struct graphics_object_id encoder)
311 {
312 switch (encoder.id) {
313 case ENCODER_ID_INTERNAL_UNIPHY:
314 switch (encoder.enum_id) {
315 case ENUM_ID_1:
316 return TRANSMITTER_UNIPHY_A;
317 case ENUM_ID_2:
318 return TRANSMITTER_UNIPHY_B;
319 default:
320 return TRANSMITTER_UNKNOWN;
321 }
322 break;
323 case ENCODER_ID_INTERNAL_UNIPHY1:
324 switch (encoder.enum_id) {
325 case ENUM_ID_1:
326 return TRANSMITTER_UNIPHY_C;
327 case ENUM_ID_2:
328 return TRANSMITTER_UNIPHY_D;
329 default:
330 return TRANSMITTER_UNKNOWN;
331 }
332 break;
333 case ENCODER_ID_INTERNAL_UNIPHY2:
334 switch (encoder.enum_id) {
335 case ENUM_ID_1:
336 return TRANSMITTER_UNIPHY_E;
337 case ENUM_ID_2:
338 return TRANSMITTER_UNIPHY_F;
339 default:
340 return TRANSMITTER_UNKNOWN;
341 }
342 break;
343 case ENCODER_ID_INTERNAL_UNIPHY3:
344 switch (encoder.enum_id) {
345 case ENUM_ID_1:
346 return TRANSMITTER_UNIPHY_G;
347 default:
348 return TRANSMITTER_UNKNOWN;
349 }
350 break;
351 case ENCODER_ID_EXTERNAL_NUTMEG:
352 switch (encoder.enum_id) {
353 case ENUM_ID_1:
354 return TRANSMITTER_NUTMEG_CRT;
355 default:
356 return TRANSMITTER_UNKNOWN;
357 }
358 break;
359 case ENCODER_ID_EXTERNAL_TRAVIS:
360 switch (encoder.enum_id) {
361 case ENUM_ID_1:
362 return TRANSMITTER_TRAVIS_CRT;
363 case ENUM_ID_2:
364 return TRANSMITTER_TRAVIS_LCD;
365 default:
366 return TRANSMITTER_UNKNOWN;
367 }
368 break;
369 default:
370 return TRANSMITTER_UNKNOWN;
371 }
372 }
373
link_destruct(struct dc_link * link)374 static void link_destruct(struct dc_link *link)
375 {
376 int i;
377
378 if (link->hpd_gpio) {
379 dal_gpio_destroy_irq(&link->hpd_gpio);
380 link->hpd_gpio = NULL;
381 }
382
383 if (link->ddc)
384 link_destroy_ddc_service(&link->ddc);
385
386 if (link->panel_cntl)
387 link->panel_cntl->funcs->destroy(&link->panel_cntl);
388
389 if (link->link_enc && !link->is_dig_mapping_flexible) {
390 /* Update link encoder resource tracking variables. These are used for
391 * the dynamic assignment of link encoders to streams. Virtual links
392 * are not assigned encoder resources on creation.
393 */
394 if (link->link_id.id != CONNECTOR_ID_VIRTUAL && link->eng_id != ENGINE_ID_UNKNOWN) {
395 link->dc->res_pool->link_encoders[link->eng_id - ENGINE_ID_DIGA] = NULL;
396 link->dc->res_pool->dig_link_enc_count--;
397 }
398 link->link_enc->funcs->destroy(&link->link_enc);
399 }
400
401 if (link->local_sink)
402 dc_sink_release(link->local_sink);
403
404 for (i = 0; i < link->sink_count; ++i)
405 dc_sink_release(link->remote_sinks[i]);
406 }
407
get_ddc_line(struct dc_link * link)408 static enum channel_id get_ddc_line(struct dc_link *link)
409 {
410 struct ddc *ddc;
411 enum channel_id channel;
412
413 channel = CHANNEL_ID_UNKNOWN;
414
415 ddc = get_ddc_pin(link->ddc);
416
417 if (ddc) {
418 switch (dal_ddc_get_line(ddc)) {
419 case GPIO_DDC_LINE_DDC1:
420 channel = CHANNEL_ID_DDC1;
421 break;
422 case GPIO_DDC_LINE_DDC2:
423 channel = CHANNEL_ID_DDC2;
424 break;
425 case GPIO_DDC_LINE_DDC3:
426 channel = CHANNEL_ID_DDC3;
427 break;
428 case GPIO_DDC_LINE_DDC4:
429 channel = CHANNEL_ID_DDC4;
430 break;
431 case GPIO_DDC_LINE_DDC5:
432 channel = CHANNEL_ID_DDC5;
433 break;
434 case GPIO_DDC_LINE_DDC6:
435 channel = CHANNEL_ID_DDC6;
436 break;
437 case GPIO_DDC_LINE_DDC_VGA:
438 channel = CHANNEL_ID_DDC_VGA;
439 break;
440 case GPIO_DDC_LINE_I2C_PAD:
441 channel = CHANNEL_ID_I2C_PAD;
442 break;
443 default:
444 BREAK_TO_DEBUGGER();
445 break;
446 }
447 }
448
449 return channel;
450 }
451
construct_phy(struct dc_link * link,const struct link_init_data * init_params)452 static bool construct_phy(struct dc_link *link,
453 const struct link_init_data *init_params)
454 {
455 uint8_t i;
456 struct ddc_service_init_data ddc_service_init_data = { 0 };
457 struct dc_context *dc_ctx = init_params->ctx;
458 struct encoder_init_data enc_init_data = { 0 };
459 struct panel_cntl_init_data panel_cntl_init_data = { 0 };
460 struct dc_bios *bios = init_params->dc->ctx->dc_bios;
461 const struct dc_vbios_funcs *bp_funcs = bios->funcs;
462 struct bp_disp_connector_caps_info disp_connect_caps_info = { 0 };
463
464 DC_LOGGER_INIT(dc_ctx->logger);
465
466 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
467 link->irq_source_hpd_rx = DC_IRQ_SOURCE_INVALID;
468 link->link_status.dpcd_caps = &link->dpcd_caps;
469
470 link->dc = init_params->dc;
471 link->ctx = dc_ctx;
472 link->link_index = init_params->link_index;
473
474 memset(&link->preferred_training_settings, 0,
475 sizeof(struct dc_link_training_overrides));
476 memset(&link->preferred_link_setting, 0,
477 sizeof(struct dc_link_settings));
478
479 link->link_id =
480 bios->funcs->get_connector_id(bios, init_params->connector_index);
481
482 link->ep_type = DISPLAY_ENDPOINT_PHY;
483
484 DC_LOG_DC("BIOS object table - link_id: %d", link->link_id.id);
485
486 if (bios->funcs->get_disp_connector_caps_info) {
487 bios->funcs->get_disp_connector_caps_info(bios, link->link_id, &disp_connect_caps_info);
488 link->is_internal_display = disp_connect_caps_info.INTERNAL_DISPLAY;
489 DC_LOG_DC("BIOS object table - is_internal_display: %d", link->is_internal_display);
490 }
491
492 if (link->link_id.type != OBJECT_TYPE_CONNECTOR) {
493 dm_output_to_console("%s: Invalid Connector ObjectID from Adapter Service for connector index:%d! type %d expected %d\n",
494 __func__, init_params->connector_index,
495 link->link_id.type, OBJECT_TYPE_CONNECTOR);
496 goto create_fail;
497 }
498
499 if (link->dc->res_pool->funcs->link_init)
500 link->dc->res_pool->funcs->link_init(link);
501
502 link->hpd_gpio = link_get_hpd_gpio(link->ctx->dc_bios, link->link_id,
503 link->ctx->gpio_service);
504
505 if (link->hpd_gpio) {
506 dal_gpio_open(link->hpd_gpio, GPIO_MODE_INTERRUPT);
507 dal_gpio_unlock_pin(link->hpd_gpio);
508 link->irq_source_hpd = dal_irq_get_source(link->hpd_gpio);
509
510 DC_LOG_DC("BIOS object table - hpd_gpio id: %d", link->hpd_gpio->id);
511 DC_LOG_DC("BIOS object table - hpd_gpio en: %d", link->hpd_gpio->en);
512 }
513
514 switch (link->link_id.id) {
515 case CONNECTOR_ID_HDMI_TYPE_A:
516 link->connector_signal = SIGNAL_TYPE_HDMI_TYPE_A;
517
518 break;
519 case CONNECTOR_ID_SINGLE_LINK_DVID:
520 case CONNECTOR_ID_SINGLE_LINK_DVII:
521 link->connector_signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
522 break;
523 case CONNECTOR_ID_DUAL_LINK_DVID:
524 case CONNECTOR_ID_DUAL_LINK_DVII:
525 link->connector_signal = SIGNAL_TYPE_DVI_DUAL_LINK;
526 break;
527 case CONNECTOR_ID_DISPLAY_PORT:
528 case CONNECTOR_ID_MXM:
529 case CONNECTOR_ID_USBC:
530 link->connector_signal = SIGNAL_TYPE_DISPLAY_PORT;
531
532 if (link->hpd_gpio)
533 link->irq_source_hpd_rx =
534 dal_irq_get_rx_source(link->hpd_gpio);
535
536 break;
537 case CONNECTOR_ID_EDP:
538 link->connector_signal = SIGNAL_TYPE_EDP;
539
540 if (link->hpd_gpio) {
541 if (!link->dc->config.allow_edp_hotplug_detection)
542 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
543
544 switch (link->dc->config.allow_edp_hotplug_detection) {
545 case HPD_EN_FOR_ALL_EDP:
546 link->irq_source_hpd_rx =
547 dal_irq_get_rx_source(link->hpd_gpio);
548 break;
549 case HPD_EN_FOR_PRIMARY_EDP_ONLY:
550 if (link->link_index == 0)
551 link->irq_source_hpd_rx =
552 dal_irq_get_rx_source(link->hpd_gpio);
553 else
554 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
555 break;
556 case HPD_EN_FOR_SECONDARY_EDP_ONLY:
557 if (link->link_index == 1)
558 link->irq_source_hpd_rx =
559 dal_irq_get_rx_source(link->hpd_gpio);
560 else
561 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
562 break;
563 default:
564 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
565 break;
566 }
567 }
568
569 break;
570 case CONNECTOR_ID_LVDS:
571 link->connector_signal = SIGNAL_TYPE_LVDS;
572 break;
573 default:
574 DC_LOG_WARNING("Unsupported Connector type:%d!\n",
575 link->link_id.id);
576 goto create_fail;
577 }
578
579 LINK_INFO("Connector[%d] description: signal: %s\n",
580 init_params->connector_index,
581 signal_type_to_string(link->connector_signal));
582
583 ddc_service_init_data.ctx = link->ctx;
584 ddc_service_init_data.id = link->link_id;
585 ddc_service_init_data.link = link;
586 link->ddc = link_create_ddc_service(&ddc_service_init_data);
587
588 if (!link->ddc) {
589 DC_ERROR("Failed to create ddc_service!\n");
590 goto ddc_create_fail;
591 }
592
593 if (!link->ddc->ddc_pin) {
594 DC_ERROR("Failed to get I2C info for connector!\n");
595 goto ddc_create_fail;
596 }
597
598 link->ddc_hw_inst =
599 dal_ddc_get_line(get_ddc_pin(link->ddc));
600
601 enc_init_data.ctx = dc_ctx;
602 bp_funcs->get_src_obj(dc_ctx->dc_bios, link->link_id, 0,
603 &enc_init_data.encoder);
604 enc_init_data.connector = link->link_id;
605 enc_init_data.channel = get_ddc_line(link);
606 enc_init_data.hpd_source = get_hpd_line(link);
607
608 link->hpd_src = enc_init_data.hpd_source;
609
610 enc_init_data.transmitter =
611 translate_encoder_to_transmitter(enc_init_data.encoder);
612 link->link_enc =
613 link->dc->res_pool->funcs->link_enc_create(dc_ctx, &enc_init_data);
614
615 if (!link->link_enc) {
616 DC_ERROR("Failed to create link encoder!\n");
617 goto link_enc_create_fail;
618 }
619
620 DC_LOG_DC("BIOS object table - DP_IS_USB_C: %d", link->link_enc->features.flags.bits.DP_IS_USB_C);
621 DC_LOG_DC("BIOS object table - IS_DP2_CAPABLE: %d", link->link_enc->features.flags.bits.IS_DP2_CAPABLE);
622
623 /* Update link encoder tracking variables. These are used for the dynamic
624 * assignment of link encoders to streams.
625 */
626 link->eng_id = link->link_enc->preferred_engine;
627 link->dc->res_pool->link_encoders[link->eng_id - ENGINE_ID_DIGA] = link->link_enc;
628 link->dc->res_pool->dig_link_enc_count++;
629
630 link->link_enc_hw_inst = link->link_enc->transmitter;
631
632 if (link->dc->res_pool->funcs->panel_cntl_create &&
633 (link->link_id.id == CONNECTOR_ID_EDP ||
634 link->link_id.id == CONNECTOR_ID_LVDS)) {
635 panel_cntl_init_data.ctx = dc_ctx;
636 panel_cntl_init_data.inst = panel_cntl_init_data.ctx->dc_edp_id_count;
637 panel_cntl_init_data.eng_id = link->eng_id;
638 link->panel_cntl =
639 link->dc->res_pool->funcs->panel_cntl_create(
640 &panel_cntl_init_data);
641 panel_cntl_init_data.ctx->dc_edp_id_count++;
642
643 if (link->panel_cntl == NULL) {
644 DC_ERROR("Failed to create link panel_cntl!\n");
645 goto panel_cntl_create_fail;
646 }
647 }
648 for (i = 0; i < 4; i++) {
649 if (bp_funcs->get_device_tag(dc_ctx->dc_bios,
650 link->link_id, i,
651 &link->device_tag) != BP_RESULT_OK) {
652 DC_ERROR("Failed to find device tag!\n");
653 goto device_tag_fail;
654 }
655
656 /* Look for device tag that matches connector signal,
657 * CRT for rgb, LCD for other supported signal tyes
658 */
659 if (!bp_funcs->is_device_id_supported(dc_ctx->dc_bios,
660 link->device_tag.dev_id))
661 continue;
662 if (link->device_tag.dev_id.device_type == DEVICE_TYPE_CRT &&
663 link->connector_signal != SIGNAL_TYPE_RGB)
664 continue;
665 if (link->device_tag.dev_id.device_type == DEVICE_TYPE_LCD &&
666 link->connector_signal == SIGNAL_TYPE_RGB)
667 continue;
668
669 DC_LOG_DC("BIOS object table - device_tag.acpi_device: %d", link->device_tag.acpi_device);
670 DC_LOG_DC("BIOS object table - device_tag.dev_id.device_type: %d", link->device_tag.dev_id.device_type);
671 DC_LOG_DC("BIOS object table - device_tag.dev_id.enum_id: %d", link->device_tag.dev_id.enum_id);
672 break;
673 }
674
675 if (bios->integrated_info) {
676 /* Look for channel mapping corresponding to connector and device tag */
677 for (i = 0; i < MAX_NUMBER_OF_EXT_DISPLAY_PATH; i++) {
678 struct external_display_path *path =
679 &bios->integrated_info->ext_disp_conn_info.path[i];
680
681 if (path->device_connector_id.enum_id == link->link_id.enum_id &&
682 path->device_connector_id.id == link->link_id.id &&
683 path->device_connector_id.type == link->link_id.type) {
684 if (link->device_tag.acpi_device != 0 &&
685 path->device_acpi_enum == link->device_tag.acpi_device) {
686 link->ddi_channel_mapping = path->channel_mapping;
687 link->chip_caps = path->caps;
688 DC_LOG_DC("BIOS object table - ddi_channel_mapping: 0x%04X",
689 link->ddi_channel_mapping.raw);
690 DC_LOG_DC("BIOS object table - chip_caps: %d",
691 link->chip_caps);
692 } else if (path->device_tag ==
693 link->device_tag.dev_id.raw_device_tag) {
694 link->ddi_channel_mapping = path->channel_mapping;
695 link->chip_caps = path->caps;
696 DC_LOG_DC("BIOS object table - ddi_channel_mapping: 0x%04X",
697 link->ddi_channel_mapping.raw);
698 DC_LOG_DC("BIOS object table - chip_caps: %d",
699 link->chip_caps);
700 }
701
702 if ((link->chip_caps & AMD_EXT_DISPLAY_PATH_CAPS__EXT_CHIP_MASK) == AMD_EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) {
703 link->bios_forced_drive_settings.VOLTAGE_SWING =
704 (bios->integrated_info->ext_disp_conn_info.fixdpvoltageswing & 0x3);
705 link->bios_forced_drive_settings.PRE_EMPHASIS =
706 ((bios->integrated_info->ext_disp_conn_info.fixdpvoltageswing >> 2) & 0x3);
707 }
708
709 break;
710 }
711 }
712 }
713 if (bios->funcs->get_atom_dc_golden_table)
714 bios->funcs->get_atom_dc_golden_table(bios);
715
716 /*
717 * TODO check if GPIO programmed correctly
718 *
719 * If GPIO isn't programmed correctly HPD might not rise or drain
720 * fast enough, leading to bounces.
721 */
722 program_hpd_filter(link);
723
724 link->psr_settings.psr_vtotal_control_support = false;
725 link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED;
726
727 DC_LOG_DC("BIOS object table - %s finished successfully.\n", __func__);
728 return true;
729 device_tag_fail:
730 link->link_enc->funcs->destroy(&link->link_enc);
731 link_enc_create_fail:
732 if (link->panel_cntl != NULL)
733 link->panel_cntl->funcs->destroy(&link->panel_cntl);
734 panel_cntl_create_fail:
735 link_destroy_ddc_service(&link->ddc);
736 ddc_create_fail:
737 create_fail:
738
739 if (link->hpd_gpio) {
740 dal_gpio_destroy_irq(&link->hpd_gpio);
741 link->hpd_gpio = NULL;
742 }
743
744 DC_LOG_DC("BIOS object table - %s failed.\n", __func__);
745 return false;
746 }
747
construct_dpia(struct dc_link * link,const struct link_init_data * init_params)748 static bool construct_dpia(struct dc_link *link,
749 const struct link_init_data *init_params)
750 {
751 struct ddc_service_init_data ddc_service_init_data = { 0 };
752 struct dc_context *dc_ctx = init_params->ctx;
753
754 DC_LOGGER_INIT(dc_ctx->logger);
755
756 /* Initialized irq source for hpd and hpd rx */
757 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
758 link->irq_source_hpd_rx = DC_IRQ_SOURCE_INVALID;
759 link->link_status.dpcd_caps = &link->dpcd_caps;
760
761 link->dc = init_params->dc;
762 link->ctx = dc_ctx;
763 link->link_index = init_params->link_index;
764
765 memset(&link->preferred_training_settings, 0,
766 sizeof(struct dc_link_training_overrides));
767 memset(&link->preferred_link_setting, 0,
768 sizeof(struct dc_link_settings));
769
770 /* Dummy Init for linkid */
771 link->link_id.type = OBJECT_TYPE_CONNECTOR;
772 link->link_id.id = CONNECTOR_ID_DISPLAY_PORT;
773 link->link_id.enum_id = ENUM_ID_1 + init_params->connector_index;
774 link->is_internal_display = false;
775 link->connector_signal = SIGNAL_TYPE_DISPLAY_PORT;
776 LINK_INFO("Connector[%d] description:signal %d\n",
777 init_params->connector_index,
778 link->connector_signal);
779
780 link->ep_type = DISPLAY_ENDPOINT_USB4_DPIA;
781 link->is_dig_mapping_flexible = true;
782
783 /* TODO: Initialize link : funcs->link_init */
784
785 ddc_service_init_data.ctx = link->ctx;
786 ddc_service_init_data.id = link->link_id;
787 ddc_service_init_data.link = link;
788 /* Set indicator for dpia link so that ddc wont be created */
789 ddc_service_init_data.is_dpia_link = true;
790
791 link->ddc = link_create_ddc_service(&ddc_service_init_data);
792 if (!link->ddc) {
793 DC_ERROR("Failed to create ddc_service!\n");
794 goto ddc_create_fail;
795 }
796
797 /* Set dpia port index : 0 to number of dpia ports */
798 link->ddc_hw_inst = init_params->connector_index;
799
800 // Assign Dpia preferred eng_id
801 if (link->dc->res_pool->funcs->get_preferred_eng_id_dpia)
802 link->dpia_preferred_eng_id = link->dc->res_pool->funcs->get_preferred_eng_id_dpia(link->ddc_hw_inst);
803
804 /* TODO: Create link encoder */
805
806 link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED;
807
808 /* Some docks seem to NAK I2C writes to segment pointer with mot=0. */
809 link->wa_flags.dp_mot_reset_segment = true;
810
811 return true;
812
813 ddc_create_fail:
814 return false;
815 }
816
link_construct(struct dc_link * link,const struct link_init_data * init_params)817 static bool link_construct(struct dc_link *link,
818 const struct link_init_data *init_params)
819 {
820 /* Handle dpia case */
821 if (init_params->is_dpia_link == true)
822 return construct_dpia(link, init_params);
823 else
824 return construct_phy(link, init_params);
825 }
826
link_create(const struct link_init_data * init_params)827 struct dc_link *link_create(const struct link_init_data *init_params)
828 {
829 struct dc_link *link =
830 kzalloc(sizeof(*link), GFP_KERNEL);
831
832 if (NULL == link)
833 goto alloc_fail;
834
835 if (false == link_construct(link, init_params))
836 goto construct_fail;
837
838 return link;
839
840 construct_fail:
841 kfree(link);
842
843 alloc_fail:
844 return NULL;
845 }
846
link_destroy(struct dc_link ** link)847 void link_destroy(struct dc_link **link)
848 {
849 link_destruct(*link);
850 kfree(*link);
851 *link = NULL;
852 }
853