1
2
3
4
5
6#include <linux/module.h>
7#include <linux/slab.h>
8#include <linux/uaccess.h>
9#include <linux/debugfs.h>
10#include <linux/component.h>
11#include <linux/of_irq.h>
12#include <linux/delay.h>
13
14#include "msm_drv.h"
15#include "msm_kms.h"
16#include "dp_hpd.h"
17#include "dp_parser.h"
18#include "dp_power.h"
19#include "dp_catalog.h"
20#include "dp_aux.h"
21#include "dp_reg.h"
22#include "dp_link.h"
23#include "dp_panel.h"
24#include "dp_ctrl.h"
25#include "dp_display.h"
26#include "dp_drm.h"
27#include "dp_audio.h"
28#include "dp_debug.h"
29
30static struct msm_dp *g_dp_display;
31#define HPD_STRING_SIZE 30
32
33enum {
34 ISR_DISCONNECTED,
35 ISR_CONNECT_PENDING,
36 ISR_CONNECTED,
37 ISR_HPD_REPLUG_COUNT,
38 ISR_IRQ_HPD_PULSE_COUNT,
39 ISR_HPD_LO_GLITH_COUNT,
40};
41
42
43enum {
44 ST_DISCONNECTED,
45 ST_CONNECT_PENDING,
46 ST_CONNECTED,
47 ST_DISCONNECT_PENDING,
48 ST_DISPLAY_OFF,
49 ST_SUSPENDED,
50};
51
52enum {
53 EV_NO_EVENT,
54
55 EV_HPD_INIT_SETUP,
56 EV_HPD_PLUG_INT,
57 EV_IRQ_HPD_INT,
58 EV_HPD_UNPLUG_INT,
59 EV_USER_NOTIFICATION,
60 EV_CONNECT_PENDING_TIMEOUT,
61 EV_DISCONNECT_PENDING_TIMEOUT,
62};
63
64#define EVENT_TIMEOUT (HZ/10)
65#define DP_EVENT_Q_MAX 8
66
67#define DP_TIMEOUT_5_SECOND (5000/EVENT_TIMEOUT)
68#define DP_TIMEOUT_NONE 0
69
70#define WAIT_FOR_RESUME_TIMEOUT_JIFFIES (HZ / 2)
71
72struct dp_event {
73 u32 event_id;
74 u32 data;
75 u32 delay;
76};
77
78struct dp_display_private {
79 char *name;
80 int irq;
81
82
83 bool core_initialized;
84 bool hpd_irq_on;
85 bool audio_supported;
86
87 struct platform_device *pdev;
88 struct dentry *root;
89
90 struct dp_usbpd *usbpd;
91 struct dp_parser *parser;
92 struct dp_power *power;
93 struct dp_catalog *catalog;
94 struct drm_dp_aux *aux;
95 struct dp_link *link;
96 struct dp_panel *panel;
97 struct dp_ctrl *ctrl;
98 struct dp_debug *debug;
99
100 struct dp_usbpd_cb usbpd_cb;
101 struct dp_display_mode dp_mode;
102 struct msm_dp dp_display;
103
104
105 struct completion audio_comp;
106
107
108 struct mutex event_mutex;
109 wait_queue_head_t event_q;
110 u32 hpd_state;
111 u32 event_pndx;
112 u32 event_gndx;
113 struct dp_event event_list[DP_EVENT_Q_MAX];
114 spinlock_t event_lock;
115
116 struct dp_audio *audio;
117};
118
119static const struct of_device_id dp_dt_match[] = {
120 {.compatible = "qcom,sc7180-dp"},
121 {}
122};
123
124static int dp_add_event(struct dp_display_private *dp_priv, u32 event,
125 u32 data, u32 delay)
126{
127 unsigned long flag;
128 struct dp_event *todo;
129 int pndx;
130
131 spin_lock_irqsave(&dp_priv->event_lock, flag);
132 pndx = dp_priv->event_pndx + 1;
133 pndx %= DP_EVENT_Q_MAX;
134 if (pndx == dp_priv->event_gndx) {
135 pr_err("event_q is full: pndx=%d gndx=%d\n",
136 dp_priv->event_pndx, dp_priv->event_gndx);
137 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
138 return -EPERM;
139 }
140 todo = &dp_priv->event_list[dp_priv->event_pndx++];
141 dp_priv->event_pndx %= DP_EVENT_Q_MAX;
142 todo->event_id = event;
143 todo->data = data;
144 todo->delay = delay;
145 wake_up(&dp_priv->event_q);
146 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
147
148 return 0;
149}
150
151static int dp_del_event(struct dp_display_private *dp_priv, u32 event)
152{
153 unsigned long flag;
154 struct dp_event *todo;
155 u32 gndx;
156
157 spin_lock_irqsave(&dp_priv->event_lock, flag);
158 if (dp_priv->event_pndx == dp_priv->event_gndx) {
159 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
160 return -ENOENT;
161 }
162
163 gndx = dp_priv->event_gndx;
164 while (dp_priv->event_pndx != gndx) {
165 todo = &dp_priv->event_list[gndx];
166 if (todo->event_id == event) {
167 todo->event_id = EV_NO_EVENT;
168 todo->delay = 0;
169 }
170 gndx++;
171 gndx %= DP_EVENT_Q_MAX;
172 }
173 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
174
175 return 0;
176}
177
178void dp_display_signal_audio_start(struct msm_dp *dp_display)
179{
180 struct dp_display_private *dp;
181
182 dp = container_of(dp_display, struct dp_display_private, dp_display);
183
184 reinit_completion(&dp->audio_comp);
185}
186
187void dp_display_signal_audio_complete(struct msm_dp *dp_display)
188{
189 struct dp_display_private *dp;
190
191 dp = container_of(dp_display, struct dp_display_private, dp_display);
192
193 complete_all(&dp->audio_comp);
194}
195
196static int dp_display_bind(struct device *dev, struct device *master,
197 void *data)
198{
199 int rc = 0;
200 struct dp_display_private *dp;
201 struct drm_device *drm;
202 struct msm_drm_private *priv;
203
204 drm = dev_get_drvdata(master);
205
206 dp = container_of(g_dp_display,
207 struct dp_display_private, dp_display);
208
209 dp->dp_display.drm_dev = drm;
210 priv = drm->dev_private;
211 priv->dp = &(dp->dp_display);
212
213 rc = dp->parser->parse(dp->parser);
214 if (rc) {
215 DRM_ERROR("device tree parsing failed\n");
216 goto end;
217 }
218
219 dp->aux->drm_dev = drm;
220 rc = dp_aux_register(dp->aux);
221 if (rc) {
222 DRM_ERROR("DRM DP AUX register failed\n");
223 goto end;
224 }
225
226 rc = dp_power_client_init(dp->power);
227 if (rc) {
228 DRM_ERROR("Power client create failed\n");
229 goto end;
230 }
231
232 rc = dp_register_audio_driver(dev, dp->audio);
233 if (rc)
234 DRM_ERROR("Audio registration Dp failed\n");
235
236end:
237 return rc;
238}
239
240static void dp_display_unbind(struct device *dev, struct device *master,
241 void *data)
242{
243 struct dp_display_private *dp;
244 struct drm_device *drm = dev_get_drvdata(master);
245 struct msm_drm_private *priv = drm->dev_private;
246
247 dp = container_of(g_dp_display,
248 struct dp_display_private, dp_display);
249
250 dp_power_client_deinit(dp->power);
251 dp_aux_unregister(dp->aux);
252 priv->dp = NULL;
253}
254
255static const struct component_ops dp_display_comp_ops = {
256 .bind = dp_display_bind,
257 .unbind = dp_display_unbind,
258};
259
260static bool dp_display_is_ds_bridge(struct dp_panel *panel)
261{
262 return (panel->dpcd[DP_DOWNSTREAMPORT_PRESENT] &
263 DP_DWN_STRM_PORT_PRESENT);
264}
265
266static bool dp_display_is_sink_count_zero(struct dp_display_private *dp)
267{
268 DRM_DEBUG_DP("present=%#x sink_count=%d\n", dp->panel->dpcd[DP_DOWNSTREAMPORT_PRESENT],
269 dp->link->sink_count);
270 return dp_display_is_ds_bridge(dp->panel) &&
271 (dp->link->sink_count == 0);
272}
273
274static void dp_display_send_hpd_event(struct msm_dp *dp_display)
275{
276 struct dp_display_private *dp;
277 struct drm_connector *connector;
278
279 dp = container_of(dp_display, struct dp_display_private, dp_display);
280
281 connector = dp->dp_display.connector;
282 drm_helper_hpd_irq_event(connector->dev);
283}
284
285
286static int dp_display_send_hpd_notification(struct dp_display_private *dp,
287 bool hpd)
288{
289 if ((hpd && dp->dp_display.is_connected) ||
290 (!hpd && !dp->dp_display.is_connected)) {
291 DRM_DEBUG_DP("HPD already %s\n", (hpd ? "on" : "off"));
292 return 0;
293 }
294
295
296 if (!hpd)
297 dp->panel->video_test = false;
298
299 dp->dp_display.is_connected = hpd;
300
301 DRM_DEBUG_DP("hpd=%d\n", hpd);
302 dp_display_send_hpd_event(&dp->dp_display);
303
304 return 0;
305}
306
307static int dp_display_process_hpd_high(struct dp_display_private *dp)
308{
309 int rc = 0;
310 struct edid *edid;
311
312 dp->panel->max_dp_lanes = dp->parser->max_dp_lanes;
313
314 rc = dp_panel_read_sink_caps(dp->panel, dp->dp_display.connector);
315 if (rc)
316 goto end;
317
318 dp_link_process_request(dp->link);
319
320 edid = dp->panel->edid;
321
322 dp->audio_supported = drm_detect_monitor_audio(edid);
323 dp_panel_handle_sink_request(dp->panel);
324
325 dp->dp_display.max_pclk_khz = DP_MAX_PIXEL_CLK_KHZ;
326 dp->dp_display.max_dp_lanes = dp->parser->max_dp_lanes;
327
328
329
330
331
332 dp_link_psm_config(dp->link, &dp->panel->link_info, false);
333
334 dp_link_reset_phy_params_vx_px(dp->link);
335 rc = dp_ctrl_on_link(dp->ctrl);
336 if (rc) {
337 DRM_ERROR("failed to complete DP link training\n");
338 goto end;
339 }
340
341 dp_add_event(dp, EV_USER_NOTIFICATION, true, 0);
342
343end:
344 return rc;
345}
346
347static void dp_display_host_init(struct dp_display_private *dp, int reset)
348{
349 bool flip = false;
350
351 DRM_DEBUG_DP("core_initialized=%d\n", dp->core_initialized);
352 if (dp->core_initialized) {
353 DRM_DEBUG_DP("DP core already initialized\n");
354 return;
355 }
356
357 if (dp->usbpd->orientation == ORIENTATION_CC2)
358 flip = true;
359
360 dp_power_init(dp->power, flip);
361 dp_ctrl_host_init(dp->ctrl, flip, reset);
362 dp_aux_init(dp->aux);
363 dp->core_initialized = true;
364}
365
366static void dp_display_host_deinit(struct dp_display_private *dp)
367{
368 if (!dp->core_initialized) {
369 DRM_DEBUG_DP("DP core not initialized\n");
370 return;
371 }
372
373 dp_ctrl_host_deinit(dp->ctrl);
374 dp_aux_deinit(dp->aux);
375 dp_power_deinit(dp->power);
376
377 dp->core_initialized = false;
378}
379
380static int dp_display_usbpd_configure_cb(struct device *dev)
381{
382 int rc = 0;
383 struct dp_display_private *dp;
384
385 if (!dev) {
386 DRM_ERROR("invalid dev\n");
387 rc = -EINVAL;
388 goto end;
389 }
390
391 dp = container_of(g_dp_display,
392 struct dp_display_private, dp_display);
393
394 dp_display_host_init(dp, false);
395
396 rc = dp_display_process_hpd_high(dp);
397end:
398 return rc;
399}
400
401static int dp_display_usbpd_disconnect_cb(struct device *dev)
402{
403 int rc = 0;
404 struct dp_display_private *dp;
405
406 if (!dev) {
407 DRM_ERROR("invalid dev\n");
408 rc = -EINVAL;
409 return rc;
410 }
411
412 dp = container_of(g_dp_display,
413 struct dp_display_private, dp_display);
414
415 dp_add_event(dp, EV_USER_NOTIFICATION, false, 0);
416
417 return rc;
418}
419
420static void dp_display_handle_video_request(struct dp_display_private *dp)
421{
422 if (dp->link->sink_request & DP_TEST_LINK_VIDEO_PATTERN) {
423 dp->panel->video_test = true;
424 dp_link_send_test_response(dp->link);
425 }
426}
427
428static int dp_display_handle_port_ststus_changed(struct dp_display_private *dp)
429{
430 int rc = 0;
431
432 if (dp_display_is_sink_count_zero(dp)) {
433 DRM_DEBUG_DP("sink count is zero, nothing to do\n");
434 if (dp->hpd_state != ST_DISCONNECTED) {
435 dp->hpd_state = ST_DISCONNECT_PENDING;
436 dp_add_event(dp, EV_USER_NOTIFICATION, false, 0);
437 }
438 } else {
439 if (dp->hpd_state == ST_DISCONNECTED) {
440 dp->hpd_state = ST_CONNECT_PENDING;
441 rc = dp_display_process_hpd_high(dp);
442 if (rc)
443 dp->hpd_state = ST_DISCONNECTED;
444 }
445 }
446
447 return rc;
448}
449
450static int dp_display_handle_irq_hpd(struct dp_display_private *dp)
451{
452 u32 sink_request = dp->link->sink_request;
453
454 DRM_DEBUG_DP("%d\n", sink_request);
455 if (dp->hpd_state == ST_DISCONNECTED) {
456 if (sink_request & DP_LINK_STATUS_UPDATED) {
457 DRM_DEBUG_DP("Disconnected sink_request: %d\n", sink_request);
458 DRM_ERROR("Disconnected, no DP_LINK_STATUS_UPDATED\n");
459 return -EINVAL;
460 }
461 }
462
463 dp_ctrl_handle_sink_request(dp->ctrl);
464
465 if (sink_request & DP_TEST_LINK_VIDEO_PATTERN)
466 dp_display_handle_video_request(dp);
467
468 return 0;
469}
470
471static int dp_display_usbpd_attention_cb(struct device *dev)
472{
473 int rc = 0;
474 u32 sink_request;
475 struct dp_display_private *dp;
476
477 if (!dev) {
478 DRM_ERROR("invalid dev\n");
479 return -EINVAL;
480 }
481
482 dp = container_of(g_dp_display,
483 struct dp_display_private, dp_display);
484
485
486 rc = dp_link_process_request(dp->link);
487 if (!rc) {
488 sink_request = dp->link->sink_request;
489 DRM_DEBUG_DP("hpd_state=%d sink_request=%d\n", dp->hpd_state, sink_request);
490 if (sink_request & DS_PORT_STATUS_CHANGED)
491 rc = dp_display_handle_port_ststus_changed(dp);
492 else
493 rc = dp_display_handle_irq_hpd(dp);
494 }
495
496 return rc;
497}
498
499static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
500{
501 struct dp_usbpd *hpd = dp->usbpd;
502 u32 state;
503 u32 tout = DP_TIMEOUT_5_SECOND;
504 int ret;
505
506 if (!hpd)
507 return 0;
508
509 mutex_lock(&dp->event_mutex);
510
511 state = dp->hpd_state;
512 DRM_DEBUG_DP("hpd_state=%d\n", state);
513 if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
514 mutex_unlock(&dp->event_mutex);
515 return 0;
516 }
517
518 if (state == ST_CONNECT_PENDING || state == ST_CONNECTED) {
519 mutex_unlock(&dp->event_mutex);
520 return 0;
521 }
522
523 if (state == ST_DISCONNECT_PENDING) {
524
525 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 1);
526 mutex_unlock(&dp->event_mutex);
527 return 0;
528 }
529
530 dp->hpd_state = ST_CONNECT_PENDING;
531
532 hpd->hpd_high = 1;
533
534 ret = dp_display_usbpd_configure_cb(&dp->pdev->dev);
535 if (ret) {
536 hpd->hpd_high = 0;
537 dp->hpd_state = ST_DISCONNECTED;
538
539 if (ret == -ECONNRESET) {
540 dp->core_initialized = false;
541 }
542
543 } else {
544
545 dp_add_event(dp, EV_CONNECT_PENDING_TIMEOUT, 0, tout);
546 }
547
548
549 dp_catalog_hpd_config_intr(dp->catalog,
550 DP_DP_IRQ_HPD_INT_MASK | DP_DP_HPD_REPLUG_INT_MASK, true);
551
552 mutex_unlock(&dp->event_mutex);
553
554
555 return 0;
556};
557
558static int dp_display_enable(struct dp_display_private *dp, u32 data);
559static int dp_display_disable(struct dp_display_private *dp, u32 data);
560
561static int dp_connect_pending_timeout(struct dp_display_private *dp, u32 data)
562{
563 u32 state;
564
565 mutex_lock(&dp->event_mutex);
566
567 state = dp->hpd_state;
568 if (state == ST_CONNECT_PENDING)
569 dp->hpd_state = ST_CONNECTED;
570
571 mutex_unlock(&dp->event_mutex);
572
573 return 0;
574}
575
576static void dp_display_handle_plugged_change(struct msm_dp *dp_display,
577 bool plugged)
578{
579 struct dp_display_private *dp;
580
581 dp = container_of(dp_display,
582 struct dp_display_private, dp_display);
583
584
585 if (dp_display->plugged_cb && dp_display->codec_dev &&
586 dp->audio_supported)
587 dp_display->plugged_cb(dp_display->codec_dev, plugged);
588}
589
590static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
591{
592 struct dp_usbpd *hpd = dp->usbpd;
593 u32 state;
594
595 if (!hpd)
596 return 0;
597
598 mutex_lock(&dp->event_mutex);
599
600 state = dp->hpd_state;
601
602
603 dp_catalog_hpd_config_intr(dp->catalog,
604 DP_DP_IRQ_HPD_INT_MASK | DP_DP_HPD_REPLUG_INT_MASK, false);
605
606
607 dp_del_event(dp, EV_IRQ_HPD_INT);
608
609 if (state == ST_DISCONNECTED) {
610
611 if (dp->link->sink_count == 0) {
612 dp_ctrl_off_phy(dp->ctrl);
613 hpd->hpd_high = 0;
614 dp->core_initialized = false;
615 }
616 mutex_unlock(&dp->event_mutex);
617 return 0;
618 }
619
620 if (state == ST_DISCONNECT_PENDING) {
621 mutex_unlock(&dp->event_mutex);
622 return 0;
623 }
624
625 if (state == ST_CONNECT_PENDING) {
626
627 dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 1);
628 mutex_unlock(&dp->event_mutex);
629 return 0;
630 }
631
632 dp->hpd_state = ST_DISCONNECT_PENDING;
633
634
635 dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_PLUG_INT_MASK, false);
636
637 hpd->hpd_high = 0;
638
639
640
641
642
643 dp_display_usbpd_disconnect_cb(&dp->pdev->dev);
644
645
646 dp_add_event(dp, EV_DISCONNECT_PENDING_TIMEOUT, 0, DP_TIMEOUT_5_SECOND);
647
648 DRM_DEBUG_DP("hpd_state=%d\n", state);
649
650 dp_display_handle_plugged_change(g_dp_display, false);
651
652
653 dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_PLUG_INT_MASK, true);
654
655
656 mutex_unlock(&dp->event_mutex);
657 return 0;
658}
659
660static int dp_disconnect_pending_timeout(struct dp_display_private *dp, u32 data)
661{
662 u32 state;
663
664 mutex_lock(&dp->event_mutex);
665
666 state = dp->hpd_state;
667 if (state == ST_DISCONNECT_PENDING)
668 dp->hpd_state = ST_DISCONNECTED;
669
670 mutex_unlock(&dp->event_mutex);
671
672 return 0;
673}
674
675static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
676{
677 u32 state;
678 int ret;
679
680 mutex_lock(&dp->event_mutex);
681
682
683 state = dp->hpd_state;
684 if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
685 mutex_unlock(&dp->event_mutex);
686 return 0;
687 }
688
689 if (state == ST_CONNECT_PENDING) {
690
691 dp_add_event(dp, EV_IRQ_HPD_INT, 0, 1);
692 mutex_unlock(&dp->event_mutex);
693 return 0;
694 }
695
696 if (state == ST_CONNECT_PENDING || state == ST_DISCONNECT_PENDING) {
697
698 dp_add_event(dp, EV_IRQ_HPD_INT, 0, 1);
699 mutex_unlock(&dp->event_mutex);
700 return 0;
701 }
702
703 ret = dp_display_usbpd_attention_cb(&dp->pdev->dev);
704 if (ret == -ECONNRESET) {
705 dp->core_initialized = false;
706 }
707 DRM_DEBUG_DP("hpd_state=%d\n", state);
708
709 mutex_unlock(&dp->event_mutex);
710
711 return 0;
712}
713
714static void dp_display_deinit_sub_modules(struct dp_display_private *dp)
715{
716 dp_debug_put(dp->debug);
717 dp_panel_put(dp->panel);
718 dp_aux_put(dp->aux);
719 dp_audio_put(dp->audio);
720}
721
722static int dp_init_sub_modules(struct dp_display_private *dp)
723{
724 int rc = 0;
725 struct device *dev = &dp->pdev->dev;
726 struct dp_usbpd_cb *cb = &dp->usbpd_cb;
727 struct dp_panel_in panel_in = {
728 .dev = dev,
729 };
730
731
732 cb->configure = dp_display_usbpd_configure_cb;
733 cb->disconnect = dp_display_usbpd_disconnect_cb;
734 cb->attention = dp_display_usbpd_attention_cb;
735
736 dp->usbpd = dp_hpd_get(dev, cb);
737 if (IS_ERR(dp->usbpd)) {
738 rc = PTR_ERR(dp->usbpd);
739 DRM_ERROR("failed to initialize hpd, rc = %d\n", rc);
740 dp->usbpd = NULL;
741 goto error;
742 }
743
744 dp->parser = dp_parser_get(dp->pdev);
745 if (IS_ERR(dp->parser)) {
746 rc = PTR_ERR(dp->parser);
747 DRM_ERROR("failed to initialize parser, rc = %d\n", rc);
748 dp->parser = NULL;
749 goto error;
750 }
751
752 dp->catalog = dp_catalog_get(dev, &dp->parser->io);
753 if (IS_ERR(dp->catalog)) {
754 rc = PTR_ERR(dp->catalog);
755 DRM_ERROR("failed to initialize catalog, rc = %d\n", rc);
756 dp->catalog = NULL;
757 goto error;
758 }
759
760 dp->power = dp_power_get(dev, dp->parser);
761 if (IS_ERR(dp->power)) {
762 rc = PTR_ERR(dp->power);
763 DRM_ERROR("failed to initialize power, rc = %d\n", rc);
764 dp->power = NULL;
765 goto error;
766 }
767
768 dp->aux = dp_aux_get(dev, dp->catalog);
769 if (IS_ERR(dp->aux)) {
770 rc = PTR_ERR(dp->aux);
771 DRM_ERROR("failed to initialize aux, rc = %d\n", rc);
772 dp->aux = NULL;
773 goto error;
774 }
775
776 dp->link = dp_link_get(dev, dp->aux);
777 if (IS_ERR(dp->link)) {
778 rc = PTR_ERR(dp->link);
779 DRM_ERROR("failed to initialize link, rc = %d\n", rc);
780 dp->link = NULL;
781 goto error_link;
782 }
783
784 panel_in.aux = dp->aux;
785 panel_in.catalog = dp->catalog;
786 panel_in.link = dp->link;
787
788 dp->panel = dp_panel_get(&panel_in);
789 if (IS_ERR(dp->panel)) {
790 rc = PTR_ERR(dp->panel);
791 DRM_ERROR("failed to initialize panel, rc = %d\n", rc);
792 dp->panel = NULL;
793 goto error_link;
794 }
795
796 dp->ctrl = dp_ctrl_get(dev, dp->link, dp->panel, dp->aux,
797 dp->power, dp->catalog, dp->parser);
798 if (IS_ERR(dp->ctrl)) {
799 rc = PTR_ERR(dp->ctrl);
800 DRM_ERROR("failed to initialize ctrl, rc = %d\n", rc);
801 dp->ctrl = NULL;
802 goto error_ctrl;
803 }
804
805 dp->audio = dp_audio_get(dp->pdev, dp->panel, dp->catalog);
806 if (IS_ERR(dp->audio)) {
807 rc = PTR_ERR(dp->audio);
808 pr_err("failed to initialize audio, rc = %d\n", rc);
809 dp->audio = NULL;
810 goto error_ctrl;
811 }
812
813 return rc;
814
815error_ctrl:
816 dp_panel_put(dp->panel);
817error_link:
818 dp_aux_put(dp->aux);
819error:
820 return rc;
821}
822
823static int dp_display_set_mode(struct msm_dp *dp_display,
824 struct dp_display_mode *mode)
825{
826 struct dp_display_private *dp;
827
828 dp = container_of(dp_display, struct dp_display_private, dp_display);
829
830 dp->panel->dp_mode.drm_mode = mode->drm_mode;
831 dp->panel->dp_mode.bpp = mode->bpp;
832 dp->panel->dp_mode.capabilities = mode->capabilities;
833 dp_panel_init_panel_info(dp->panel);
834 return 0;
835}
836
837static int dp_display_prepare(struct msm_dp *dp)
838{
839 return 0;
840}
841
842static int dp_display_enable(struct dp_display_private *dp, u32 data)
843{
844 int rc = 0;
845 struct msm_dp *dp_display;
846
847 dp_display = g_dp_display;
848
849 DRM_DEBUG_DP("sink_count=%d\n", dp->link->sink_count);
850 if (dp_display->power_on) {
851 DRM_DEBUG_DP("Link already setup, return\n");
852 return 0;
853 }
854
855 rc = dp_ctrl_on_stream(dp->ctrl);
856 if (!rc)
857 dp_display->power_on = true;
858
859 return rc;
860}
861
862static int dp_display_post_enable(struct msm_dp *dp_display)
863{
864 struct dp_display_private *dp;
865 u32 rate;
866
867 dp = container_of(dp_display, struct dp_display_private, dp_display);
868
869 rate = dp->link->link_params.rate;
870
871 if (dp->audio_supported) {
872 dp->audio->bw_code = drm_dp_link_rate_to_bw_code(rate);
873 dp->audio->lane_count = dp->link->link_params.num_lanes;
874 }
875
876
877 dp_display_handle_plugged_change(dp_display, true);
878 return 0;
879}
880
881static int dp_display_disable(struct dp_display_private *dp, u32 data)
882{
883 struct msm_dp *dp_display;
884
885 dp_display = g_dp_display;
886
887 if (!dp_display->power_on)
888 return 0;
889
890
891 if (dp_display->audio_enabled) {
892
893 dp_display_handle_plugged_change(dp_display, false);
894 if (!wait_for_completion_timeout(&dp->audio_comp,
895 HZ * 5))
896 DRM_ERROR("audio comp timeout\n");
897 }
898
899 dp_display->audio_enabled = false;
900
901
902 if (dp->link->sink_count == 0) {
903 dp_ctrl_off_link_stream(dp->ctrl);
904 } else {
905 dp_ctrl_off(dp->ctrl);
906 dp->core_initialized = false;
907 }
908
909 dp_display->power_on = false;
910
911 DRM_DEBUG_DP("sink count: %d\n", dp->link->sink_count);
912 return 0;
913}
914
915static int dp_display_unprepare(struct msm_dp *dp)
916{
917 return 0;
918}
919
920int dp_display_set_plugged_cb(struct msm_dp *dp_display,
921 hdmi_codec_plugged_cb fn, struct device *codec_dev)
922{
923 bool plugged;
924
925 dp_display->plugged_cb = fn;
926 dp_display->codec_dev = codec_dev;
927 plugged = dp_display->is_connected;
928 dp_display_handle_plugged_change(dp_display, plugged);
929
930 return 0;
931}
932
933int dp_display_validate_mode(struct msm_dp *dp, u32 mode_pclk_khz)
934{
935 const u32 num_components = 3, default_bpp = 24;
936 struct dp_display_private *dp_display;
937 struct dp_link_info *link_info;
938 u32 mode_rate_khz = 0, supported_rate_khz = 0, mode_bpp = 0;
939
940 if (!dp || !mode_pclk_khz || !dp->connector) {
941 DRM_ERROR("invalid params\n");
942 return -EINVAL;
943 }
944
945 dp_display = container_of(dp, struct dp_display_private, dp_display);
946 link_info = &dp_display->panel->link_info;
947
948 mode_bpp = dp->connector->display_info.bpc * num_components;
949 if (!mode_bpp)
950 mode_bpp = default_bpp;
951
952 mode_bpp = dp_panel_get_mode_bpp(dp_display->panel,
953 mode_bpp, mode_pclk_khz);
954
955 mode_rate_khz = mode_pclk_khz * mode_bpp;
956 supported_rate_khz = link_info->num_lanes * link_info->rate * 8;
957
958 if (mode_rate_khz > supported_rate_khz)
959 return MODE_BAD;
960
961 return MODE_OK;
962}
963
964int dp_display_get_modes(struct msm_dp *dp,
965 struct dp_display_mode *dp_mode)
966{
967 struct dp_display_private *dp_display;
968 int ret = 0;
969
970 if (!dp) {
971 DRM_ERROR("invalid params\n");
972 return 0;
973 }
974
975 dp_display = container_of(dp, struct dp_display_private, dp_display);
976
977 ret = dp_panel_get_modes(dp_display->panel,
978 dp->connector, dp_mode);
979 if (dp_mode->drm_mode.clock)
980 dp->max_pclk_khz = dp_mode->drm_mode.clock;
981 return ret;
982}
983
984bool dp_display_check_video_test(struct msm_dp *dp)
985{
986 struct dp_display_private *dp_display;
987
988 dp_display = container_of(dp, struct dp_display_private, dp_display);
989
990 return dp_display->panel->video_test;
991}
992
993int dp_display_get_test_bpp(struct msm_dp *dp)
994{
995 struct dp_display_private *dp_display;
996
997 if (!dp) {
998 DRM_ERROR("invalid params\n");
999 return 0;
1000 }
1001
1002 dp_display = container_of(dp, struct dp_display_private, dp_display);
1003
1004 return dp_link_bit_depth_to_bpp(
1005 dp_display->link->test_video.test_bit_depth);
1006}
1007
1008void msm_dp_snapshot(struct msm_disp_state *disp_state, struct msm_dp *dp)
1009{
1010 struct dp_display_private *dp_display;
1011
1012 dp_display = container_of(dp, struct dp_display_private, dp_display);
1013
1014
1015
1016
1017
1018
1019
1020
1021 mutex_lock(&dp_display->event_mutex);
1022
1023 if (!dp->power_on) {
1024 mutex_unlock(&dp_display->event_mutex);
1025 return;
1026 }
1027
1028 dp_catalog_snapshot(dp_display->catalog, disp_state);
1029
1030 mutex_unlock(&dp_display->event_mutex);
1031}
1032
1033static void dp_display_config_hpd(struct dp_display_private *dp)
1034{
1035
1036 dp_display_host_init(dp, true);
1037 dp_catalog_ctrl_hpd_config(dp->catalog);
1038
1039
1040
1041
1042
1043 enable_irq(dp->irq);
1044}
1045
1046static int hpd_event_thread(void *data)
1047{
1048 struct dp_display_private *dp_priv;
1049 unsigned long flag;
1050 struct dp_event *todo;
1051 int timeout_mode = 0;
1052
1053 dp_priv = (struct dp_display_private *)data;
1054
1055 while (1) {
1056 if (timeout_mode) {
1057 wait_event_timeout(dp_priv->event_q,
1058 (dp_priv->event_pndx == dp_priv->event_gndx),
1059 EVENT_TIMEOUT);
1060 } else {
1061 wait_event_interruptible(dp_priv->event_q,
1062 (dp_priv->event_pndx != dp_priv->event_gndx));
1063 }
1064 spin_lock_irqsave(&dp_priv->event_lock, flag);
1065 todo = &dp_priv->event_list[dp_priv->event_gndx];
1066 if (todo->delay) {
1067 struct dp_event *todo_next;
1068
1069 dp_priv->event_gndx++;
1070 dp_priv->event_gndx %= DP_EVENT_Q_MAX;
1071
1072
1073 todo_next = &dp_priv->event_list[dp_priv->event_pndx++];
1074 dp_priv->event_pndx %= DP_EVENT_Q_MAX;
1075 todo_next->event_id = todo->event_id;
1076 todo_next->data = todo->data;
1077 todo_next->delay = todo->delay - 1;
1078
1079
1080 todo->event_id = EV_NO_EVENT;
1081 todo->delay = 0;
1082
1083
1084 timeout_mode = 1;
1085 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1086 continue;
1087 }
1088
1089
1090 if (dp_priv->event_pndx == dp_priv->event_gndx) {
1091 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1092 continue;
1093 }
1094
1095 dp_priv->event_gndx++;
1096 dp_priv->event_gndx %= DP_EVENT_Q_MAX;
1097 timeout_mode = 0;
1098 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1099
1100 switch (todo->event_id) {
1101 case EV_HPD_INIT_SETUP:
1102 dp_display_config_hpd(dp_priv);
1103 break;
1104 case EV_HPD_PLUG_INT:
1105 dp_hpd_plug_handle(dp_priv, todo->data);
1106 break;
1107 case EV_HPD_UNPLUG_INT:
1108 dp_hpd_unplug_handle(dp_priv, todo->data);
1109 break;
1110 case EV_IRQ_HPD_INT:
1111 dp_irq_hpd_handle(dp_priv, todo->data);
1112 break;
1113 case EV_USER_NOTIFICATION:
1114 dp_display_send_hpd_notification(dp_priv,
1115 todo->data);
1116 break;
1117 case EV_CONNECT_PENDING_TIMEOUT:
1118 dp_connect_pending_timeout(dp_priv,
1119 todo->data);
1120 break;
1121 case EV_DISCONNECT_PENDING_TIMEOUT:
1122 dp_disconnect_pending_timeout(dp_priv,
1123 todo->data);
1124 break;
1125 default:
1126 break;
1127 }
1128 }
1129
1130 return 0;
1131}
1132
1133static void dp_hpd_event_setup(struct dp_display_private *dp_priv)
1134{
1135 init_waitqueue_head(&dp_priv->event_q);
1136 spin_lock_init(&dp_priv->event_lock);
1137
1138 kthread_run(hpd_event_thread, dp_priv, "dp_hpd_handler");
1139}
1140
1141static irqreturn_t dp_display_irq_handler(int irq, void *dev_id)
1142{
1143 struct dp_display_private *dp = dev_id;
1144 irqreturn_t ret = IRQ_HANDLED;
1145 u32 hpd_isr_status;
1146
1147 if (!dp) {
1148 DRM_ERROR("invalid data\n");
1149 return IRQ_NONE;
1150 }
1151
1152 hpd_isr_status = dp_catalog_hpd_get_intr_status(dp->catalog);
1153
1154 DRM_DEBUG_DP("hpd isr status=%#x\n", hpd_isr_status);
1155 if (hpd_isr_status & 0x0F) {
1156
1157 if (hpd_isr_status & DP_DP_HPD_PLUG_INT_MASK)
1158 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 0);
1159
1160 if (hpd_isr_status & DP_DP_IRQ_HPD_INT_MASK) {
1161
1162 dp_del_event(dp, EV_CONNECT_PENDING_TIMEOUT);
1163 dp_add_event(dp, EV_IRQ_HPD_INT, 0, 0);
1164 }
1165
1166 if (hpd_isr_status & DP_DP_HPD_REPLUG_INT_MASK) {
1167 dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);
1168 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 3);
1169 }
1170
1171 if (hpd_isr_status & DP_DP_HPD_UNPLUG_INT_MASK)
1172 dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);
1173 }
1174
1175
1176 dp_ctrl_isr(dp->ctrl);
1177
1178
1179 dp_aux_isr(dp->aux);
1180
1181 return ret;
1182}
1183
1184int dp_display_request_irq(struct msm_dp *dp_display)
1185{
1186 int rc = 0;
1187 struct dp_display_private *dp;
1188
1189 if (!dp_display) {
1190 DRM_ERROR("invalid input\n");
1191 return -EINVAL;
1192 }
1193
1194 dp = container_of(dp_display, struct dp_display_private, dp_display);
1195
1196 dp->irq = irq_of_parse_and_map(dp->pdev->dev.of_node, 0);
1197 if (dp->irq < 0) {
1198 rc = dp->irq;
1199 DRM_ERROR("failed to get irq: %d\n", rc);
1200 return rc;
1201 }
1202
1203 rc = devm_request_irq(&dp->pdev->dev, dp->irq,
1204 dp_display_irq_handler,
1205 IRQF_TRIGGER_HIGH, "dp_display_isr", dp);
1206 if (rc < 0) {
1207 DRM_ERROR("failed to request IRQ%u: %d\n",
1208 dp->irq, rc);
1209 return rc;
1210 }
1211 disable_irq(dp->irq);
1212
1213 return 0;
1214}
1215
1216static int dp_display_probe(struct platform_device *pdev)
1217{
1218 int rc = 0;
1219 struct dp_display_private *dp;
1220
1221 if (!pdev || !pdev->dev.of_node) {
1222 DRM_ERROR("pdev not found\n");
1223 return -ENODEV;
1224 }
1225
1226 dp = devm_kzalloc(&pdev->dev, sizeof(*dp), GFP_KERNEL);
1227 if (!dp)
1228 return -ENOMEM;
1229
1230 dp->pdev = pdev;
1231 dp->name = "drm_dp";
1232
1233 rc = dp_init_sub_modules(dp);
1234 if (rc) {
1235 DRM_ERROR("init sub module failed\n");
1236 return -EPROBE_DEFER;
1237 }
1238
1239 mutex_init(&dp->event_mutex);
1240 g_dp_display = &dp->dp_display;
1241
1242
1243 g_dp_display->dp_audio = dp->audio;
1244
1245 init_completion(&dp->audio_comp);
1246
1247 platform_set_drvdata(pdev, g_dp_display);
1248
1249 rc = component_add(&pdev->dev, &dp_display_comp_ops);
1250 if (rc) {
1251 DRM_ERROR("component add failed, rc=%d\n", rc);
1252 dp_display_deinit_sub_modules(dp);
1253 }
1254
1255 return rc;
1256}
1257
1258static int dp_display_remove(struct platform_device *pdev)
1259{
1260 struct dp_display_private *dp;
1261
1262 dp = container_of(g_dp_display,
1263 struct dp_display_private, dp_display);
1264
1265 dp_display_deinit_sub_modules(dp);
1266
1267 component_del(&pdev->dev, &dp_display_comp_ops);
1268 platform_set_drvdata(pdev, NULL);
1269
1270 return 0;
1271}
1272
1273static int dp_pm_resume(struct device *dev)
1274{
1275 struct platform_device *pdev = to_platform_device(dev);
1276 struct msm_dp *dp_display = platform_get_drvdata(pdev);
1277 struct dp_display_private *dp;
1278 int sink_count = 0;
1279
1280 dp = container_of(dp_display, struct dp_display_private, dp_display);
1281
1282 mutex_lock(&dp->event_mutex);
1283
1284 DRM_DEBUG_DP("Before, core_inited=%d power_on=%d\n",
1285 dp->core_initialized, dp_display->power_on);
1286
1287
1288 dp->hpd_state = ST_DISCONNECTED;
1289
1290
1291 dp_display_host_init(dp, true);
1292
1293 dp_catalog_ctrl_hpd_config(dp->catalog);
1294
1295
1296
1297
1298
1299 dp_link_psm_config(dp->link, &dp->panel->link_info, false);
1300
1301 if (dp_catalog_link_is_connected(dp->catalog)) {
1302 sink_count = drm_dp_read_sink_count(dp->aux);
1303 if (sink_count < 0)
1304 sink_count = 0;
1305 }
1306
1307 dp->link->sink_count = sink_count;
1308
1309
1310
1311
1312
1313
1314 if (dp->link->sink_count) {
1315 dp->dp_display.is_connected = true;
1316 } else {
1317 dp->dp_display.is_connected = false;
1318 dp_display_handle_plugged_change(g_dp_display, false);
1319 }
1320
1321 DRM_DEBUG_DP("After, sink_count=%d is_connected=%d core_inited=%d power_on=%d\n",
1322 dp->link->sink_count, dp->dp_display.is_connected,
1323 dp->core_initialized, dp_display->power_on);
1324
1325 mutex_unlock(&dp->event_mutex);
1326
1327 return 0;
1328}
1329
1330static int dp_pm_suspend(struct device *dev)
1331{
1332 struct platform_device *pdev = to_platform_device(dev);
1333 struct msm_dp *dp_display = platform_get_drvdata(pdev);
1334 struct dp_display_private *dp;
1335
1336 dp = container_of(dp_display, struct dp_display_private, dp_display);
1337
1338 mutex_lock(&dp->event_mutex);
1339
1340 DRM_DEBUG_DP("Before, core_inited=%d power_on=%d\n",
1341 dp->core_initialized, dp_display->power_on);
1342
1343 if (dp->core_initialized == true) {
1344
1345 if (dp_power_clk_status(dp->power, DP_CTRL_PM))
1346 dp_ctrl_off_link_stream(dp->ctrl);
1347
1348 dp_display_host_deinit(dp);
1349 }
1350
1351 dp->hpd_state = ST_SUSPENDED;
1352
1353
1354 dp->core_initialized = false;
1355
1356 DRM_DEBUG_DP("After, core_inited=%d power_on=%d\n",
1357 dp->core_initialized, dp_display->power_on);
1358
1359 mutex_unlock(&dp->event_mutex);
1360
1361 return 0;
1362}
1363
1364static int dp_pm_prepare(struct device *dev)
1365{
1366 return 0;
1367}
1368
1369static void dp_pm_complete(struct device *dev)
1370{
1371
1372}
1373
1374static const struct dev_pm_ops dp_pm_ops = {
1375 .suspend = dp_pm_suspend,
1376 .resume = dp_pm_resume,
1377 .prepare = dp_pm_prepare,
1378 .complete = dp_pm_complete,
1379};
1380
1381static struct platform_driver dp_display_driver = {
1382 .probe = dp_display_probe,
1383 .remove = dp_display_remove,
1384 .driver = {
1385 .name = "msm-dp-display",
1386 .of_match_table = dp_dt_match,
1387 .suppress_bind_attrs = true,
1388 .pm = &dp_pm_ops,
1389 },
1390};
1391
1392int __init msm_dp_register(void)
1393{
1394 int ret;
1395
1396 ret = platform_driver_register(&dp_display_driver);
1397 if (ret)
1398 DRM_ERROR("Dp display driver register failed");
1399
1400 return ret;
1401}
1402
1403void __exit msm_dp_unregister(void)
1404{
1405 platform_driver_unregister(&dp_display_driver);
1406}
1407
1408void msm_dp_irq_postinstall(struct msm_dp *dp_display)
1409{
1410 struct dp_display_private *dp;
1411
1412 if (!dp_display)
1413 return;
1414
1415 dp = container_of(dp_display, struct dp_display_private, dp_display);
1416
1417 dp_hpd_event_setup(dp);
1418
1419 dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100);
1420}
1421
1422void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
1423{
1424 struct dp_display_private *dp;
1425 struct device *dev;
1426 int rc;
1427
1428 dp = container_of(dp_display, struct dp_display_private, dp_display);
1429 dev = &dp->pdev->dev;
1430
1431 dp->debug = dp_debug_get(dev, dp->panel, dp->usbpd,
1432 dp->link, &dp->dp_display.connector,
1433 minor);
1434 if (IS_ERR(dp->debug)) {
1435 rc = PTR_ERR(dp->debug);
1436 DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
1437 dp->debug = NULL;
1438 }
1439}
1440
1441int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
1442 struct drm_encoder *encoder)
1443{
1444 struct msm_drm_private *priv;
1445 int ret;
1446
1447 if (WARN_ON(!encoder) || WARN_ON(!dp_display) || WARN_ON(!dev))
1448 return -EINVAL;
1449
1450 priv = dev->dev_private;
1451 dp_display->drm_dev = dev;
1452
1453 ret = dp_display_request_irq(dp_display);
1454 if (ret) {
1455 DRM_ERROR("request_irq failed, ret=%d\n", ret);
1456 return ret;
1457 }
1458
1459 dp_display->encoder = encoder;
1460
1461 dp_display->connector = dp_drm_connector_init(dp_display);
1462 if (IS_ERR(dp_display->connector)) {
1463 ret = PTR_ERR(dp_display->connector);
1464 DRM_DEV_ERROR(dev->dev,
1465 "failed to create dp connector: %d\n", ret);
1466 dp_display->connector = NULL;
1467 return ret;
1468 }
1469
1470 priv->connectors[priv->num_connectors++] = dp_display->connector;
1471 return 0;
1472}
1473
1474int msm_dp_display_enable(struct msm_dp *dp, struct drm_encoder *encoder)
1475{
1476 int rc = 0;
1477 struct dp_display_private *dp_display;
1478 u32 state;
1479
1480 dp_display = container_of(dp, struct dp_display_private, dp_display);
1481 if (!dp_display->dp_mode.drm_mode.clock) {
1482 DRM_ERROR("invalid params\n");
1483 return -EINVAL;
1484 }
1485
1486 mutex_lock(&dp_display->event_mutex);
1487
1488
1489 dp_del_event(dp_display, EV_CONNECT_PENDING_TIMEOUT);
1490
1491 rc = dp_display_set_mode(dp, &dp_display->dp_mode);
1492 if (rc) {
1493 DRM_ERROR("Failed to perform a mode set, rc=%d\n", rc);
1494 mutex_unlock(&dp_display->event_mutex);
1495 return rc;
1496 }
1497
1498 rc = dp_display_prepare(dp);
1499 if (rc) {
1500 DRM_ERROR("DP display prepare failed, rc=%d\n", rc);
1501 mutex_unlock(&dp_display->event_mutex);
1502 return rc;
1503 }
1504
1505 state = dp_display->hpd_state;
1506
1507 if (state == ST_DISPLAY_OFF)
1508 dp_display_host_init(dp_display, true);
1509
1510 dp_display_enable(dp_display, 0);
1511
1512 rc = dp_display_post_enable(dp);
1513 if (rc) {
1514 DRM_ERROR("DP display post enable failed, rc=%d\n", rc);
1515 dp_display_disable(dp_display, 0);
1516 dp_display_unprepare(dp);
1517 }
1518
1519
1520 if (state == ST_DISPLAY_OFF)
1521 dp_add_event(dp_display, EV_IRQ_HPD_INT, 0, 0);
1522
1523
1524 dp_display->hpd_state = ST_CONNECTED;
1525
1526 mutex_unlock(&dp_display->event_mutex);
1527
1528 return rc;
1529}
1530
1531int msm_dp_display_pre_disable(struct msm_dp *dp, struct drm_encoder *encoder)
1532{
1533 struct dp_display_private *dp_display;
1534
1535 dp_display = container_of(dp, struct dp_display_private, dp_display);
1536
1537 dp_ctrl_push_idle(dp_display->ctrl);
1538
1539 return 0;
1540}
1541
1542int msm_dp_display_disable(struct msm_dp *dp, struct drm_encoder *encoder)
1543{
1544 int rc = 0;
1545 u32 state;
1546 struct dp_display_private *dp_display;
1547
1548 dp_display = container_of(dp, struct dp_display_private, dp_display);
1549
1550 mutex_lock(&dp_display->event_mutex);
1551
1552
1553 dp_del_event(dp_display, EV_DISCONNECT_PENDING_TIMEOUT);
1554
1555 dp_display_disable(dp_display, 0);
1556
1557 rc = dp_display_unprepare(dp);
1558 if (rc)
1559 DRM_ERROR("DP display unprepare failed, rc=%d\n", rc);
1560
1561 state = dp_display->hpd_state;
1562 if (state == ST_DISCONNECT_PENDING) {
1563
1564 dp_display->hpd_state = ST_DISCONNECTED;
1565 } else {
1566 dp_display->hpd_state = ST_DISPLAY_OFF;
1567 }
1568
1569 mutex_unlock(&dp_display->event_mutex);
1570 return rc;
1571}
1572
1573void msm_dp_display_mode_set(struct msm_dp *dp, struct drm_encoder *encoder,
1574 struct drm_display_mode *mode,
1575 struct drm_display_mode *adjusted_mode)
1576{
1577 struct dp_display_private *dp_display;
1578
1579 dp_display = container_of(dp, struct dp_display_private, dp_display);
1580
1581 memset(&dp_display->dp_mode, 0x0, sizeof(struct dp_display_mode));
1582
1583 if (dp_display_check_video_test(dp))
1584 dp_display->dp_mode.bpp = dp_display_get_test_bpp(dp);
1585 else
1586 dp_display->dp_mode.bpp = dp->connector->display_info.bpc * 3;
1587
1588 if (!dp_display->dp_mode.bpp)
1589 dp_display->dp_mode.bpp = 24;
1590
1591 drm_mode_copy(&dp_display->dp_mode.drm_mode, adjusted_mode);
1592
1593 dp_display->dp_mode.v_active_low =
1594 !!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NVSYNC);
1595
1596 dp_display->dp_mode.h_active_low =
1597 !!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NHSYNC);
1598}
1599
