Merge tag 'amd-drm-next-5.19-2022-04-15' of https://gitlab.freedesktop.org/agd5f...
[linux-block.git] / drivers / gpu / drm / amd / display / amdgpu_dm / amdgpu_dm_helpers.c
1 /*
2  * Copyright 2015 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 #include <linux/string.h>
27 #include <linux/acpi.h>
28 #include <linux/i2c.h>
29
30 #include <drm/drm_probe_helper.h>
31 #include <drm/amdgpu_drm.h>
32 #include <drm/drm_edid.h>
33
34 #include "dm_services.h"
35 #include "amdgpu.h"
36 #include "dc.h"
37 #include "amdgpu_dm.h"
38 #include "amdgpu_dm_irq.h"
39 #include "amdgpu_dm_mst_types.h"
40
41 #include "dm_helpers.h"
42 #include "ddc_service_types.h"
43
44 struct monitor_patch_info {
45         unsigned int manufacturer_id;
46         unsigned int product_id;
47         void (*patch_func)(struct dc_edid_caps *edid_caps, unsigned int param);
48         unsigned int patch_param;
49 };
50 static void set_max_dsc_bpp_limit(struct dc_edid_caps *edid_caps, unsigned int param);
51
52 static const struct monitor_patch_info monitor_patch_table[] = {
53 {0x6D1E, 0x5BBF, set_max_dsc_bpp_limit, 15},
54 {0x6D1E, 0x5B9A, set_max_dsc_bpp_limit, 15},
55 };
56
57 static void set_max_dsc_bpp_limit(struct dc_edid_caps *edid_caps, unsigned int param)
58 {
59         if (edid_caps)
60                 edid_caps->panel_patch.max_dsc_target_bpp_limit = param;
61 }
62
63 static int amdgpu_dm_patch_edid_caps(struct dc_edid_caps *edid_caps)
64 {
65         int i, ret = 0;
66
67         for (i = 0; i < ARRAY_SIZE(monitor_patch_table); i++)
68                 if ((edid_caps->manufacturer_id == monitor_patch_table[i].manufacturer_id)
69                         &&  (edid_caps->product_id == monitor_patch_table[i].product_id)) {
70                         monitor_patch_table[i].patch_func(edid_caps, monitor_patch_table[i].patch_param);
71                         ret++;
72                 }
73
74         return ret;
75 }
76
77 /* dm_helpers_parse_edid_caps
78  *
79  * Parse edid caps
80  *
81  * @edid:       [in] pointer to edid
82  *  edid_caps:  [in] pointer to edid caps
83  * @return
84  *      void
85  * */
86 enum dc_edid_status dm_helpers_parse_edid_caps(
87                 struct dc_link *link,
88                 const struct dc_edid *edid,
89                 struct dc_edid_caps *edid_caps)
90 {
91         struct amdgpu_dm_connector *aconnector = link->priv;
92         struct drm_connector *connector = &aconnector->base;
93         struct edid *edid_buf = edid ? (struct edid *) edid->raw_edid : NULL;
94         struct cea_sad *sads;
95         int sad_count = -1;
96         int sadb_count = -1;
97         int i = 0;
98         uint8_t *sadb = NULL;
99
100         enum dc_edid_status result = EDID_OK;
101
102         if (!edid_caps || !edid)
103                 return EDID_BAD_INPUT;
104
105         if (!drm_edid_is_valid(edid_buf))
106                 result = EDID_BAD_CHECKSUM;
107
108         edid_caps->manufacturer_id = (uint16_t) edid_buf->mfg_id[0] |
109                                         ((uint16_t) edid_buf->mfg_id[1])<<8;
110         edid_caps->product_id = (uint16_t) edid_buf->prod_code[0] |
111                                         ((uint16_t) edid_buf->prod_code[1])<<8;
112         edid_caps->serial_number = edid_buf->serial;
113         edid_caps->manufacture_week = edid_buf->mfg_week;
114         edid_caps->manufacture_year = edid_buf->mfg_year;
115
116         drm_edid_get_monitor_name(edid_buf,
117                                   edid_caps->display_name,
118                                   AUDIO_INFO_DISPLAY_NAME_SIZE_IN_CHARS);
119
120         edid_caps->edid_hdmi = connector->display_info.is_hdmi;
121
122         sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads);
123         if (sad_count <= 0)
124                 return result;
125
126         edid_caps->audio_mode_count = sad_count < DC_MAX_AUDIO_DESC_COUNT ? sad_count : DC_MAX_AUDIO_DESC_COUNT;
127         for (i = 0; i < edid_caps->audio_mode_count; ++i) {
128                 struct cea_sad *sad = &sads[i];
129
130                 edid_caps->audio_modes[i].format_code = sad->format;
131                 edid_caps->audio_modes[i].channel_count = sad->channels + 1;
132                 edid_caps->audio_modes[i].sample_rate = sad->freq;
133                 edid_caps->audio_modes[i].sample_size = sad->byte2;
134         }
135
136         sadb_count = drm_edid_to_speaker_allocation((struct edid *) edid->raw_edid, &sadb);
137
138         if (sadb_count < 0) {
139                 DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sadb_count);
140                 sadb_count = 0;
141         }
142
143         if (sadb_count)
144                 edid_caps->speaker_flags = sadb[0];
145         else
146                 edid_caps->speaker_flags = DEFAULT_SPEAKER_LOCATION;
147
148         kfree(sads);
149         kfree(sadb);
150
151         amdgpu_dm_patch_edid_caps(edid_caps);
152
153         return result;
154 }
155
156 static void get_payload_table(
157                 struct amdgpu_dm_connector *aconnector,
158                 struct dp_mst_stream_allocation_table *proposed_table)
159 {
160         int i;
161         struct drm_dp_mst_topology_mgr *mst_mgr =
162                         &aconnector->mst_port->mst_mgr;
163
164         mutex_lock(&mst_mgr->payload_lock);
165
166         proposed_table->stream_count = 0;
167
168         /* number of active streams */
169         for (i = 0; i < mst_mgr->max_payloads; i++) {
170                 if (mst_mgr->payloads[i].num_slots == 0)
171                         break; /* end of vcp_id table */
172
173                 ASSERT(mst_mgr->payloads[i].payload_state !=
174                                 DP_PAYLOAD_DELETE_LOCAL);
175
176                 if (mst_mgr->payloads[i].payload_state == DP_PAYLOAD_LOCAL ||
177                         mst_mgr->payloads[i].payload_state ==
178                                         DP_PAYLOAD_REMOTE) {
179
180                         struct dp_mst_stream_allocation *sa =
181                                         &proposed_table->stream_allocations[
182                                                 proposed_table->stream_count];
183
184                         sa->slot_count = mst_mgr->payloads[i].num_slots;
185                         sa->vcp_id = mst_mgr->proposed_vcpis[i]->vcpi;
186                         proposed_table->stream_count++;
187                 }
188         }
189
190         mutex_unlock(&mst_mgr->payload_lock);
191 }
192
193 void dm_helpers_dp_update_branch_info(
194         struct dc_context *ctx,
195         const struct dc_link *link)
196 {}
197
198 /*
199  * Writes payload allocation table in immediate downstream device.
200  */
201 bool dm_helpers_dp_mst_write_payload_allocation_table(
202                 struct dc_context *ctx,
203                 const struct dc_stream_state *stream,
204                 struct dp_mst_stream_allocation_table *proposed_table,
205                 bool enable)
206 {
207         struct amdgpu_dm_connector *aconnector;
208         struct dm_connector_state *dm_conn_state;
209         struct drm_dp_mst_topology_mgr *mst_mgr;
210         struct drm_dp_mst_port *mst_port;
211         bool ret;
212         u8 link_coding_cap = DP_8b_10b_ENCODING;
213
214         aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
215         /* Accessing the connector state is required for vcpi_slots allocation
216          * and directly relies on behaviour in commit check
217          * that blocks before commit guaranteeing that the state
218          * is not gonna be swapped while still in use in commit tail */
219
220         if (!aconnector || !aconnector->mst_port)
221                 return false;
222
223         dm_conn_state = to_dm_connector_state(aconnector->base.state);
224
225         mst_mgr = &aconnector->mst_port->mst_mgr;
226
227         if (!mst_mgr->mst_state)
228                 return false;
229
230         mst_port = aconnector->port;
231
232 #if defined(CONFIG_DRM_AMD_DC_DCN)
233         link_coding_cap = dc_link_dp_mst_decide_link_encoding_format(aconnector->dc_link);
234 #endif
235
236         if (enable) {
237
238                 ret = drm_dp_mst_allocate_vcpi(mst_mgr, mst_port,
239                                                dm_conn_state->pbn,
240                                                dm_conn_state->vcpi_slots);
241                 if (!ret)
242                         return false;
243
244         } else {
245                 drm_dp_mst_reset_vcpi_slots(mst_mgr, mst_port);
246         }
247
248         /* It's OK for this to fail */
249         drm_dp_update_payload_part1(mst_mgr, (link_coding_cap == DP_CAP_ANSI_128B132B) ? 0:1);
250
251         /* mst_mgr->->payloads are VC payload notify MST branch using DPCD or
252          * AUX message. The sequence is slot 1-63 allocated sequence for each
253          * stream. AMD ASIC stream slot allocation should follow the same
254          * sequence. copy DRM MST allocation to dc */
255
256         get_payload_table(aconnector, proposed_table);
257
258         return true;
259 }
260
261 /*
262  * poll pending down reply
263  */
264 void dm_helpers_dp_mst_poll_pending_down_reply(
265         struct dc_context *ctx,
266         const struct dc_link *link)
267 {}
268
269 /*
270  * Clear payload allocation table before enable MST DP link.
271  */
272 void dm_helpers_dp_mst_clear_payload_allocation_table(
273         struct dc_context *ctx,
274         const struct dc_link *link)
275 {}
276
277 /*
278  * Polls for ACT (allocation change trigger) handled and sends
279  * ALLOCATE_PAYLOAD message.
280  */
281 enum act_return_status dm_helpers_dp_mst_poll_for_allocation_change_trigger(
282                 struct dc_context *ctx,
283                 const struct dc_stream_state *stream)
284 {
285         struct amdgpu_dm_connector *aconnector;
286         struct drm_dp_mst_topology_mgr *mst_mgr;
287         int ret;
288
289         aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
290
291         if (!aconnector || !aconnector->mst_port)
292                 return ACT_FAILED;
293
294         mst_mgr = &aconnector->mst_port->mst_mgr;
295
296         if (!mst_mgr->mst_state)
297                 return ACT_FAILED;
298
299         ret = drm_dp_check_act_status(mst_mgr);
300
301         if (ret)
302                 return ACT_FAILED;
303
304         return ACT_SUCCESS;
305 }
306
307 bool dm_helpers_dp_mst_send_payload_allocation(
308                 struct dc_context *ctx,
309                 const struct dc_stream_state *stream,
310                 bool enable)
311 {
312         struct amdgpu_dm_connector *aconnector;
313         struct drm_dp_mst_topology_mgr *mst_mgr;
314         struct drm_dp_mst_port *mst_port;
315
316         aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
317
318         if (!aconnector || !aconnector->mst_port)
319                 return false;
320
321         mst_port = aconnector->port;
322
323         mst_mgr = &aconnector->mst_port->mst_mgr;
324
325         if (!mst_mgr->mst_state)
326                 return false;
327
328         /* It's OK for this to fail */
329         drm_dp_update_payload_part2(mst_mgr);
330
331         if (!enable)
332                 drm_dp_mst_deallocate_vcpi(mst_mgr, mst_port);
333
334         return true;
335 }
336
337 void dm_dtn_log_begin(struct dc_context *ctx,
338         struct dc_log_buffer_ctx *log_ctx)
339 {
340         static const char msg[] = "[dtn begin]\n";
341
342         if (!log_ctx) {
343                 pr_info("%s", msg);
344                 return;
345         }
346
347         dm_dtn_log_append_v(ctx, log_ctx, "%s", msg);
348 }
349
350 __printf(3, 4)
351 void dm_dtn_log_append_v(struct dc_context *ctx,
352         struct dc_log_buffer_ctx *log_ctx,
353         const char *msg, ...)
354 {
355         va_list args;
356         size_t total;
357         int n;
358
359         if (!log_ctx) {
360                 /* No context, redirect to dmesg. */
361                 struct va_format vaf;
362
363                 vaf.fmt = msg;
364                 vaf.va = &args;
365
366                 va_start(args, msg);
367                 pr_info("%pV", &vaf);
368                 va_end(args);
369
370                 return;
371         }
372
373         /* Measure the output. */
374         va_start(args, msg);
375         n = vsnprintf(NULL, 0, msg, args);
376         va_end(args);
377
378         if (n <= 0)
379                 return;
380
381         /* Reallocate the string buffer as needed. */
382         total = log_ctx->pos + n + 1;
383
384         if (total > log_ctx->size) {
385                 char *buf = (char *)kvcalloc(total, sizeof(char), GFP_KERNEL);
386
387                 if (buf) {
388                         memcpy(buf, log_ctx->buf, log_ctx->pos);
389                         kfree(log_ctx->buf);
390
391                         log_ctx->buf = buf;
392                         log_ctx->size = total;
393                 }
394         }
395
396         if (!log_ctx->buf)
397                 return;
398
399         /* Write the formatted string to the log buffer. */
400         va_start(args, msg);
401         n = vscnprintf(
402                 log_ctx->buf + log_ctx->pos,
403                 log_ctx->size - log_ctx->pos,
404                 msg,
405                 args);
406         va_end(args);
407
408         if (n > 0)
409                 log_ctx->pos += n;
410 }
411
412 void dm_dtn_log_end(struct dc_context *ctx,
413         struct dc_log_buffer_ctx *log_ctx)
414 {
415         static const char msg[] = "[dtn end]\n";
416
417         if (!log_ctx) {
418                 pr_info("%s", msg);
419                 return;
420         }
421
422         dm_dtn_log_append_v(ctx, log_ctx, "%s", msg);
423 }
424
425 bool dm_helpers_dp_mst_start_top_mgr(
426                 struct dc_context *ctx,
427                 const struct dc_link *link,
428                 bool boot)
429 {
430         struct amdgpu_dm_connector *aconnector = link->priv;
431
432         if (!aconnector) {
433                 DRM_ERROR("Failed to find connector for link!");
434                 return false;
435         }
436
437         if (boot) {
438                 DRM_INFO("DM_MST: Differing MST start on aconnector: %p [id: %d]\n",
439                                         aconnector, aconnector->base.base.id);
440                 return true;
441         }
442
443         DRM_INFO("DM_MST: starting TM on aconnector: %p [id: %d]\n",
444                         aconnector, aconnector->base.base.id);
445
446         return (drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, true) == 0);
447 }
448
449 bool dm_helpers_dp_mst_stop_top_mgr(
450                 struct dc_context *ctx,
451                 struct dc_link *link)
452 {
453         struct amdgpu_dm_connector *aconnector = link->priv;
454         uint8_t i;
455
456         if (!aconnector) {
457                 DRM_ERROR("Failed to find connector for link!");
458                 return false;
459         }
460
461         DRM_INFO("DM_MST: stopping TM on aconnector: %p [id: %d]\n",
462                         aconnector, aconnector->base.base.id);
463
464         if (aconnector->mst_mgr.mst_state == true) {
465                 drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, false);
466
467                 for (i = 0; i < MAX_SINKS_PER_LINK; i++) {
468                         if (link->remote_sinks[i] == NULL)
469                                 continue;
470
471                         if (link->remote_sinks[i]->sink_signal ==
472                             SIGNAL_TYPE_DISPLAY_PORT_MST) {
473                                 dc_link_remove_remote_sink(link, link->remote_sinks[i]);
474
475                                 if (aconnector->dc_sink) {
476                                         dc_sink_release(aconnector->dc_sink);
477                                         aconnector->dc_sink = NULL;
478                                         aconnector->dc_link->cur_link_settings.lane_count = 0;
479                                 }
480                         }
481                 }
482         }
483
484         return false;
485 }
486
487 bool dm_helpers_dp_read_dpcd(
488                 struct dc_context *ctx,
489                 const struct dc_link *link,
490                 uint32_t address,
491                 uint8_t *data,
492                 uint32_t size)
493 {
494
495         struct amdgpu_dm_connector *aconnector = link->priv;
496
497         if (!aconnector) {
498                 DC_LOG_DC("Failed to find connector for link!\n");
499                 return false;
500         }
501
502         return drm_dp_dpcd_read(&aconnector->dm_dp_aux.aux, address,
503                         data, size) > 0;
504 }
505
506 bool dm_helpers_dp_write_dpcd(
507                 struct dc_context *ctx,
508                 const struct dc_link *link,
509                 uint32_t address,
510                 const uint8_t *data,
511                 uint32_t size)
512 {
513         struct amdgpu_dm_connector *aconnector = link->priv;
514
515         if (!aconnector) {
516                 DRM_ERROR("Failed to find connector for link!");
517                 return false;
518         }
519
520         return drm_dp_dpcd_write(&aconnector->dm_dp_aux.aux,
521                         address, (uint8_t *)data, size) > 0;
522 }
523
524 bool dm_helpers_submit_i2c(
525                 struct dc_context *ctx,
526                 const struct dc_link *link,
527                 struct i2c_command *cmd)
528 {
529         struct amdgpu_dm_connector *aconnector = link->priv;
530         struct i2c_msg *msgs;
531         int i = 0;
532         int num = cmd->number_of_payloads;
533         bool result;
534
535         if (!aconnector) {
536                 DRM_ERROR("Failed to find connector for link!");
537                 return false;
538         }
539
540         msgs = kcalloc(num, sizeof(struct i2c_msg), GFP_KERNEL);
541
542         if (!msgs)
543                 return false;
544
545         for (i = 0; i < num; i++) {
546                 msgs[i].flags = cmd->payloads[i].write ? 0 : I2C_M_RD;
547                 msgs[i].addr = cmd->payloads[i].address;
548                 msgs[i].len = cmd->payloads[i].length;
549                 msgs[i].buf = cmd->payloads[i].data;
550         }
551
552         result = i2c_transfer(&aconnector->i2c->base, msgs, num) == num;
553
554         kfree(msgs);
555
556         return result;
557 }
558
559 #if defined(CONFIG_DRM_AMD_DC_DCN)
560 static bool execute_synaptics_rc_command(struct drm_dp_aux *aux,
561                 bool is_write_cmd,
562                 unsigned char cmd,
563                 unsigned int length,
564                 unsigned int offset,
565                 unsigned char *data)
566 {
567         bool success = false;
568         unsigned char rc_data[16] = {0};
569         unsigned char rc_offset[4] = {0};
570         unsigned char rc_length[2] = {0};
571         unsigned char rc_cmd = 0;
572         unsigned char rc_result = 0xFF;
573         unsigned char i = 0;
574         uint8_t ret = 0;
575
576         if (is_write_cmd) {
577                 // write rc data
578                 memmove(rc_data, data, length);
579                 ret = drm_dp_dpcd_write(aux, SYNAPTICS_RC_DATA, rc_data, sizeof(rc_data));
580         }
581
582         // write rc offset
583         rc_offset[0] = (unsigned char) offset & 0xFF;
584         rc_offset[1] = (unsigned char) (offset >> 8) & 0xFF;
585         rc_offset[2] = (unsigned char) (offset >> 16) & 0xFF;
586         rc_offset[3] = (unsigned char) (offset >> 24) & 0xFF;
587         ret = drm_dp_dpcd_write(aux, SYNAPTICS_RC_OFFSET, rc_offset, sizeof(rc_offset));
588
589         // write rc length
590         rc_length[0] = (unsigned char) length & 0xFF;
591         rc_length[1] = (unsigned char) (length >> 8) & 0xFF;
592         ret = drm_dp_dpcd_write(aux, SYNAPTICS_RC_LENGTH, rc_length, sizeof(rc_length));
593
594         // write rc cmd
595         rc_cmd = cmd | 0x80;
596         ret = drm_dp_dpcd_write(aux, SYNAPTICS_RC_COMMAND, &rc_cmd, sizeof(rc_cmd));
597
598         if (ret < 0) {
599                 DRM_ERROR("     execute_synaptics_rc_command - write cmd ..., err = %d\n", ret);
600                 return false;
601         }
602
603         // poll until active is 0
604         for (i = 0; i < 10; i++) {
605                 drm_dp_dpcd_read(aux, SYNAPTICS_RC_COMMAND, &rc_cmd, sizeof(rc_cmd));
606                 if (rc_cmd == cmd)
607                         // active is 0
608                         break;
609                 msleep(10);
610         }
611
612         // read rc result
613         drm_dp_dpcd_read(aux, SYNAPTICS_RC_RESULT, &rc_result, sizeof(rc_result));
614         success = (rc_result == 0);
615
616         if (success && !is_write_cmd) {
617                 // read rc data
618                 drm_dp_dpcd_read(aux, SYNAPTICS_RC_DATA, data, length);
619         }
620
621         DC_LOG_DC("     execute_synaptics_rc_command - success = %d\n", success);
622
623         return success;
624 }
625
626 static void apply_synaptics_fifo_reset_wa(struct drm_dp_aux *aux)
627 {
628         unsigned char data[16] = {0};
629
630         DC_LOG_DC("Start apply_synaptics_fifo_reset_wa\n");
631
632         // Step 2
633         data[0] = 'P';
634         data[1] = 'R';
635         data[2] = 'I';
636         data[3] = 'U';
637         data[4] = 'S';
638
639         if (!execute_synaptics_rc_command(aux, true, 0x01, 5, 0, data))
640                 return;
641
642         // Step 3 and 4
643         if (!execute_synaptics_rc_command(aux, false, 0x31, 4, 0x220998, data))
644                 return;
645
646         data[0] &= (~(1 << 1)); // set bit 1 to 0
647         if (!execute_synaptics_rc_command(aux, true, 0x21, 4, 0x220998, data))
648                 return;
649
650         if (!execute_synaptics_rc_command(aux, false, 0x31, 4, 0x220D98, data))
651                 return;
652
653         data[0] &= (~(1 << 1)); // set bit 1 to 0
654         if (!execute_synaptics_rc_command(aux, true, 0x21, 4, 0x220D98, data))
655                 return;
656
657         if (!execute_synaptics_rc_command(aux, false, 0x31, 4, 0x221198, data))
658                 return;
659
660         data[0] &= (~(1 << 1)); // set bit 1 to 0
661         if (!execute_synaptics_rc_command(aux, true, 0x21, 4, 0x221198, data))
662                 return;
663
664         // Step 3 and 5
665         if (!execute_synaptics_rc_command(aux, false, 0x31, 4, 0x220998, data))
666                 return;
667
668         data[0] |= (1 << 1); // set bit 1 to 1
669         if (!execute_synaptics_rc_command(aux, true, 0x21, 4, 0x220998, data))
670                 return;
671
672         if (!execute_synaptics_rc_command(aux, false, 0x31, 4, 0x220D98, data))
673                 return;
674
675         data[0] |= (1 << 1); // set bit 1 to 1
676                 return;
677
678         if (!execute_synaptics_rc_command(aux, false, 0x31, 4, 0x221198, data))
679                 return;
680
681         data[0] |= (1 << 1); // set bit 1 to 1
682         if (!execute_synaptics_rc_command(aux, true, 0x21, 4, 0x221198, data))
683                 return;
684
685         // Step 6
686         if (!execute_synaptics_rc_command(aux, true, 0x02, 0, 0, NULL))
687                 return;
688
689         DC_LOG_DC("Done apply_synaptics_fifo_reset_wa\n");
690 }
691
692 static uint8_t write_dsc_enable_synaptics_non_virtual_dpcd_mst(
693                 struct drm_dp_aux *aux,
694                 const struct dc_stream_state *stream,
695                 bool enable)
696 {
697         uint8_t ret = 0;
698
699         DC_LOG_DC("Configure DSC to non-virtual dpcd synaptics\n");
700
701         if (enable) {
702                 /* When DSC is enabled on previous boot and reboot with the hub,
703                  * there is a chance that Synaptics hub gets stuck during reboot sequence.
704                  * Applying a workaround to reset Synaptics SDP fifo before enabling the first stream
705                  */
706                 if (!stream->link->link_status.link_active &&
707                         memcmp(stream->link->dpcd_caps.branch_dev_name,
708                                 (int8_t *)SYNAPTICS_DEVICE_ID, 4) == 0)
709                         apply_synaptics_fifo_reset_wa(aux);
710
711                 ret = drm_dp_dpcd_write(aux, DP_DSC_ENABLE, &enable, 1);
712                 DRM_INFO("Send DSC enable to synaptics\n");
713
714         } else {
715                 /* Synaptics hub not support virtual dpcd,
716                  * external monitor occur garbage while disable DSC,
717                  * Disable DSC only when entire link status turn to false,
718                  */
719                 if (!stream->link->link_status.link_active) {
720                         ret = drm_dp_dpcd_write(aux, DP_DSC_ENABLE, &enable, 1);
721                         DRM_INFO("Send DSC disable to synaptics\n");
722                 }
723         }
724
725         return ret;
726 }
727 #endif
728
729 bool dm_helpers_dp_write_dsc_enable(
730                 struct dc_context *ctx,
731                 const struct dc_stream_state *stream,
732                 bool enable)
733 {
734         uint8_t enable_dsc = enable ? 1 : 0;
735         struct amdgpu_dm_connector *aconnector;
736         uint8_t ret = 0;
737
738         if (!stream)
739                 return false;
740
741         if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
742                 aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
743
744                 if (!aconnector->dsc_aux)
745                         return false;
746
747 #if defined(CONFIG_DRM_AMD_DC_DCN)
748                 // apply w/a to synaptics
749                 if (needs_dsc_aux_workaround(aconnector->dc_link) &&
750                     (aconnector->mst_downstream_port_present.byte & 0x7) != 0x3)
751                         return write_dsc_enable_synaptics_non_virtual_dpcd_mst(
752                                 aconnector->dsc_aux, stream, enable_dsc);
753 #endif
754
755                 ret = drm_dp_dpcd_write(aconnector->dsc_aux, DP_DSC_ENABLE, &enable_dsc, 1);
756                 DC_LOG_DC("Send DSC %s to MST RX\n", enable_dsc ? "enable" : "disable");
757         }
758
759         if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT || stream->signal == SIGNAL_TYPE_EDP) {
760 #if defined(CONFIG_DRM_AMD_DC_DCN)
761                 if (stream->sink->link->dpcd_caps.dongle_type == DISPLAY_DONGLE_NONE) {
762 #endif
763                         ret = dm_helpers_dp_write_dpcd(ctx, stream->link, DP_DSC_ENABLE, &enable_dsc, 1);
764                         DC_LOG_DC("Send DSC %s to SST RX\n", enable_dsc ? "enable" : "disable");
765 #if defined(CONFIG_DRM_AMD_DC_DCN)
766                 } else if (stream->sink->link->dpcd_caps.dongle_type == DISPLAY_DONGLE_DP_HDMI_CONVERTER) {
767                         ret = dm_helpers_dp_write_dpcd(ctx, stream->link, DP_DSC_ENABLE, &enable_dsc, 1);
768                         DC_LOG_DC("Send DSC %s to DP-HDMI PCON\n", enable_dsc ? "enable" : "disable");
769                 }
770 #endif
771         }
772
773         return (ret > 0);
774 }
775
776 bool dm_helpers_is_dp_sink_present(struct dc_link *link)
777 {
778         bool dp_sink_present;
779         struct amdgpu_dm_connector *aconnector = link->priv;
780
781         if (!aconnector) {
782                 BUG_ON("Failed to find connector for link!");
783                 return true;
784         }
785
786         mutex_lock(&aconnector->dm_dp_aux.aux.hw_mutex);
787         dp_sink_present = dc_link_is_dp_sink_present(link);
788         mutex_unlock(&aconnector->dm_dp_aux.aux.hw_mutex);
789         return dp_sink_present;
790 }
791
792 enum dc_edid_status dm_helpers_read_local_edid(
793                 struct dc_context *ctx,
794                 struct dc_link *link,
795                 struct dc_sink *sink)
796 {
797         struct amdgpu_dm_connector *aconnector = link->priv;
798         struct drm_connector *connector = &aconnector->base;
799         struct i2c_adapter *ddc;
800         int retry = 3;
801         enum dc_edid_status edid_status;
802         struct edid *edid;
803
804         if (link->aux_mode)
805                 ddc = &aconnector->dm_dp_aux.aux.ddc;
806         else
807                 ddc = &aconnector->i2c->base;
808
809         /* some dongles read edid incorrectly the first time,
810          * do check sum and retry to make sure read correct edid.
811          */
812         do {
813
814                 edid = drm_get_edid(&aconnector->base, ddc);
815
816                 /* DP Compliance Test 4.2.2.6 */
817                 if (link->aux_mode && connector->edid_corrupt)
818                         drm_dp_send_real_edid_checksum(&aconnector->dm_dp_aux.aux, connector->real_edid_checksum);
819
820                 if (!edid && connector->edid_corrupt) {
821                         connector->edid_corrupt = false;
822                         return EDID_BAD_CHECKSUM;
823                 }
824
825                 if (!edid)
826                         return EDID_NO_RESPONSE;
827
828                 sink->dc_edid.length = EDID_LENGTH * (edid->extensions + 1);
829                 memmove(sink->dc_edid.raw_edid, (uint8_t *)edid, sink->dc_edid.length);
830
831                 /* We don't need the original edid anymore */
832                 kfree(edid);
833
834                 edid_status = dm_helpers_parse_edid_caps(
835                                                 link,
836                                                 &sink->dc_edid,
837                                                 &sink->edid_caps);
838
839         } while (edid_status == EDID_BAD_CHECKSUM && --retry > 0);
840
841         if (edid_status != EDID_OK)
842                 DRM_ERROR("EDID err: %d, on connector: %s",
843                                 edid_status,
844                                 aconnector->base.name);
845
846         /* DP Compliance Test 4.2.2.3 */
847         if (link->aux_mode)
848                 drm_dp_send_real_edid_checksum(&aconnector->dm_dp_aux.aux, sink->dc_edid.raw_edid[sink->dc_edid.length-1]);
849
850         return edid_status;
851 }
852 int dm_helper_dmub_aux_transfer_sync(
853                 struct dc_context *ctx,
854                 const struct dc_link *link,
855                 struct aux_payload *payload,
856                 enum aux_return_code_type *operation_result)
857 {
858         return amdgpu_dm_process_dmub_aux_transfer_sync(true, ctx,
859                         link->link_index, (void *)payload,
860                         (void *)operation_result);
861 }
862
863 int dm_helpers_dmub_set_config_sync(struct dc_context *ctx,
864                 const struct dc_link *link,
865                 struct set_config_cmd_payload *payload,
866                 enum set_config_status *operation_result)
867 {
868         return amdgpu_dm_process_dmub_aux_transfer_sync(false, ctx,
869                         link->link_index, (void *)payload,
870                         (void *)operation_result);
871 }
872
873 void dm_set_dcn_clocks(struct dc_context *ctx, struct dc_clocks *clks)
874 {
875         /* TODO: something */
876 }
877
878 void dm_helpers_smu_timeout(struct dc_context *ctx, unsigned int msg_id, unsigned int param, unsigned int timeout_us)
879 {
880         // TODO:
881         //amdgpu_device_gpu_recover(dc_context->driver-context, NULL);
882 }
883
884 void *dm_helpers_allocate_gpu_mem(
885                 struct dc_context *ctx,
886                 enum dc_gpu_mem_alloc_type type,
887                 size_t size,
888                 long long *addr)
889 {
890         struct amdgpu_device *adev = ctx->driver_context;
891         struct dal_allocation *da;
892         u32 domain = (type == DC_MEM_ALLOC_TYPE_GART) ?
893                 AMDGPU_GEM_DOMAIN_GTT : AMDGPU_GEM_DOMAIN_VRAM;
894         int ret;
895
896         da = kzalloc(sizeof(struct dal_allocation), GFP_KERNEL);
897         if (!da)
898                 return NULL;
899
900         ret = amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
901                                       domain, &da->bo,
902                                       &da->gpu_addr, &da->cpu_ptr);
903
904         *addr = da->gpu_addr;
905
906         if (ret) {
907                 kfree(da);
908                 return NULL;
909         }
910
911         /* add da to list in dm */
912         list_add(&da->list, &adev->dm.da_list);
913
914         return da->cpu_ptr;
915 }
916
917 void dm_helpers_free_gpu_mem(
918                 struct dc_context *ctx,
919                 enum dc_gpu_mem_alloc_type type,
920                 void *pvMem)
921 {
922         struct amdgpu_device *adev = ctx->driver_context;
923         struct dal_allocation *da;
924
925         /* walk the da list in DM */
926         list_for_each_entry(da, &adev->dm.da_list, list) {
927                 if (pvMem == da->cpu_ptr) {
928                         amdgpu_bo_free_kernel(&da->bo, &da->gpu_addr, &da->cpu_ptr);
929                         list_del(&da->list);
930                         kfree(da);
931                         break;
932                 }
933         }
934 }
935
936 bool dm_helpers_dmub_outbox_interrupt_control(struct dc_context *ctx, bool enable)
937 {
938         enum dc_irq_source irq_source;
939         bool ret;
940
941         irq_source = DC_IRQ_SOURCE_DMCUB_OUTBOX;
942
943         ret = dc_interrupt_set(ctx->dc, irq_source, enable);
944
945         DRM_DEBUG_DRIVER("Dmub trace irq %sabling: r=%d\n",
946                          enable ? "en" : "dis", ret);
947         return ret;
948 }
949
950 void dm_helpers_mst_enable_stream_features(const struct dc_stream_state *stream)
951 {
952         /* TODO: virtual DPCD */
953         struct dc_link *link = stream->link;
954         union down_spread_ctrl old_downspread;
955         union down_spread_ctrl new_downspread;
956
957         if (link->aux_access_disabled)
958                 return;
959
960         if (!dm_helpers_dp_read_dpcd(link->ctx, link, DP_DOWNSPREAD_CTRL,
961                                      &old_downspread.raw,
962                                      sizeof(old_downspread)))
963                 return;
964
965         new_downspread.raw = old_downspread.raw;
966         new_downspread.bits.IGNORE_MSA_TIMING_PARAM =
967                 (stream->ignore_msa_timing_param) ? 1 : 0;
968
969         if (new_downspread.raw != old_downspread.raw)
970                 dm_helpers_dp_write_dpcd(link->ctx, link, DP_DOWNSPREAD_CTRL,
971                                          &new_downspread.raw,
972                                          sizeof(new_downspread));
973 }
974
975 void dm_set_phyd32clk(struct dc_context *ctx, int freq_khz)
976 {
977        // TODO
978 }
979
980 #if defined(CONFIG_DRM_AMD_DC_DCN)
981 void dm_helpers_enable_periodic_detection(struct dc_context *ctx, bool enable)
982 {
983         /* TODO: add periodic detection implementation */
984 }
985 #endif