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#include <drm/drm_panel.h>
14
15#include "msm_drv.h"
16#include "msm_kms.h"
17#include "dp_hpd.h"
18#include "dp_parser.h"
19#include "dp_power.h"
20#include "dp_catalog.h"
21#include "dp_aux.h"
22#include "dp_reg.h"
23#include "dp_link.h"
24#include "dp_panel.h"
25#include "dp_ctrl.h"
26#include "dp_display.h"
27#include "dp_drm.h"
28#include "dp_audio.h"
29#include "dp_debug.h"
30
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 unsigned int id;
83
84
85 bool core_initialized;
86 bool hpd_irq_on;
87 bool audio_supported;
88
89 struct platform_device *pdev;
90 struct dentry *root;
91
92 struct dp_usbpd *usbpd;
93 struct dp_parser *parser;
94 struct dp_power *power;
95 struct dp_catalog *catalog;
96 struct drm_dp_aux *aux;
97 struct dp_link *link;
98 struct dp_panel *panel;
99 struct dp_ctrl *ctrl;
100 struct dp_debug *debug;
101
102 struct dp_usbpd_cb usbpd_cb;
103 struct dp_display_mode dp_mode;
104 struct msm_dp dp_display;
105
106
107 struct completion audio_comp;
108
109
110 struct mutex event_mutex;
111 wait_queue_head_t event_q;
112 u32 hpd_state;
113 u32 event_pndx;
114 u32 event_gndx;
115 struct dp_event event_list[DP_EVENT_Q_MAX];
116 spinlock_t event_lock;
117
118 struct dp_audio *audio;
119};
120
121struct msm_dp_desc {
122 phys_addr_t io_start;
123 unsigned int connector_type;
124};
125
126struct msm_dp_config {
127 const struct msm_dp_desc *descs;
128 size_t num_descs;
129};
130
131static const struct msm_dp_config sc7180_dp_cfg = {
132 .descs = (const struct msm_dp_desc[]) {
133 [MSM_DP_CONTROLLER_0] = { .io_start = 0x0ae90000, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
134 },
135 .num_descs = 1,
136};
137
138static const struct of_device_id dp_dt_match[] = {
139 { .compatible = "qcom,sc7180-dp", .data = &sc7180_dp_cfg },
140 {}
141};
142
143static struct dp_display_private *dev_get_dp_display_private(struct device *dev)
144{
145 struct msm_dp *dp = dev_get_drvdata(dev);
146
147 return container_of(dp, struct dp_display_private, dp_display);
148}
149
150static int dp_add_event(struct dp_display_private *dp_priv, u32 event,
151 u32 data, u32 delay)
152{
153 unsigned long flag;
154 struct dp_event *todo;
155 int pndx;
156
157 spin_lock_irqsave(&dp_priv->event_lock, flag);
158 pndx = dp_priv->event_pndx + 1;
159 pndx %= DP_EVENT_Q_MAX;
160 if (pndx == dp_priv->event_gndx) {
161 pr_err("event_q is full: pndx=%d gndx=%d\n",
162 dp_priv->event_pndx, dp_priv->event_gndx);
163 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
164 return -EPERM;
165 }
166 todo = &dp_priv->event_list[dp_priv->event_pndx++];
167 dp_priv->event_pndx %= DP_EVENT_Q_MAX;
168 todo->event_id = event;
169 todo->data = data;
170 todo->delay = delay;
171 wake_up(&dp_priv->event_q);
172 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
173
174 return 0;
175}
176
177static int dp_del_event(struct dp_display_private *dp_priv, u32 event)
178{
179 unsigned long flag;
180 struct dp_event *todo;
181 u32 gndx;
182
183 spin_lock_irqsave(&dp_priv->event_lock, flag);
184 if (dp_priv->event_pndx == dp_priv->event_gndx) {
185 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
186 return -ENOENT;
187 }
188
189 gndx = dp_priv->event_gndx;
190 while (dp_priv->event_pndx != gndx) {
191 todo = &dp_priv->event_list[gndx];
192 if (todo->event_id == event) {
193 todo->event_id = EV_NO_EVENT;
194 todo->delay = 0;
195 }
196 gndx++;
197 gndx %= DP_EVENT_Q_MAX;
198 }
199 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
200
201 return 0;
202}
203
204void dp_display_signal_audio_start(struct msm_dp *dp_display)
205{
206 struct dp_display_private *dp;
207
208 dp = container_of(dp_display, struct dp_display_private, dp_display);
209
210 reinit_completion(&dp->audio_comp);
211}
212
213void dp_display_signal_audio_complete(struct msm_dp *dp_display)
214{
215 struct dp_display_private *dp;
216
217 dp = container_of(dp_display, struct dp_display_private, dp_display);
218
219 complete_all(&dp->audio_comp);
220}
221
222static int dp_display_bind(struct device *dev, struct device *master,
223 void *data)
224{
225 int rc = 0;
226 struct dp_display_private *dp = dev_get_dp_display_private(dev);
227 struct msm_drm_private *priv;
228 struct drm_device *drm;
229
230 drm = dev_get_drvdata(master);
231
232 dp->dp_display.drm_dev = drm;
233 priv = drm->dev_private;
234 priv->dp[dp->id] = &dp->dp_display;
235
236 rc = dp->parser->parse(dp->parser, dp->dp_display.connector_type);
237 if (rc) {
238 DRM_ERROR("device tree parsing failed\n");
239 goto end;
240 }
241
242 dp->dp_display.panel_bridge = dp->parser->panel_bridge;
243
244 dp->aux->drm_dev = drm;
245 rc = dp_aux_register(dp->aux);
246 if (rc) {
247 DRM_ERROR("DRM DP AUX register failed\n");
248 goto end;
249 }
250
251 rc = dp_power_client_init(dp->power);
252 if (rc) {
253 DRM_ERROR("Power client create failed\n");
254 goto end;
255 }
256
257 rc = dp_register_audio_driver(dev, dp->audio);
258 if (rc)
259 DRM_ERROR("Audio registration Dp failed\n");
260
261end:
262 return rc;
263}
264
265static void dp_display_unbind(struct device *dev, struct device *master,
266 void *data)
267{
268 struct dp_display_private *dp = dev_get_dp_display_private(dev);
269 struct drm_device *drm = dev_get_drvdata(master);
270 struct msm_drm_private *priv = drm->dev_private;
271
272 dp_power_client_deinit(dp->power);
273 dp_aux_unregister(dp->aux);
274 priv->dp[dp->id] = NULL;
275}
276
277static const struct component_ops dp_display_comp_ops = {
278 .bind = dp_display_bind,
279 .unbind = dp_display_unbind,
280};
281
282static bool dp_display_is_ds_bridge(struct dp_panel *panel)
283{
284 return (panel->dpcd[DP_DOWNSTREAMPORT_PRESENT] &
285 DP_DWN_STRM_PORT_PRESENT);
286}
287
288static bool dp_display_is_sink_count_zero(struct dp_display_private *dp)
289{
290 DRM_DEBUG_DP("present=%#x sink_count=%d\n", dp->panel->dpcd[DP_DOWNSTREAMPORT_PRESENT],
291 dp->link->sink_count);
292 return dp_display_is_ds_bridge(dp->panel) &&
293 (dp->link->sink_count == 0);
294}
295
296static void dp_display_send_hpd_event(struct msm_dp *dp_display)
297{
298 struct dp_display_private *dp;
299 struct drm_connector *connector;
300
301 dp = container_of(dp_display, struct dp_display_private, dp_display);
302
303 connector = dp->dp_display.connector;
304 drm_helper_hpd_irq_event(connector->dev);
305}
306
307
308static int dp_display_send_hpd_notification(struct dp_display_private *dp,
309 bool hpd)
310{
311 if ((hpd && dp->dp_display.is_connected) ||
312 (!hpd && !dp->dp_display.is_connected)) {
313 DRM_DEBUG_DP("HPD already %s\n", (hpd ? "on" : "off"));
314 return 0;
315 }
316
317
318 if (!hpd)
319 dp->panel->video_test = false;
320
321 dp->dp_display.is_connected = hpd;
322
323 DRM_DEBUG_DP("hpd=%d\n", hpd);
324 dp_display_send_hpd_event(&dp->dp_display);
325
326 return 0;
327}
328
329static int dp_display_process_hpd_high(struct dp_display_private *dp)
330{
331 int rc = 0;
332 struct edid *edid;
333
334 dp->panel->max_dp_lanes = dp->parser->max_dp_lanes;
335
336 rc = dp_panel_read_sink_caps(dp->panel, dp->dp_display.connector);
337 if (rc)
338 goto end;
339
340 dp_link_process_request(dp->link);
341
342 edid = dp->panel->edid;
343
344 dp->audio_supported = drm_detect_monitor_audio(edid);
345 dp_panel_handle_sink_request(dp->panel);
346
347 dp->dp_display.max_pclk_khz = DP_MAX_PIXEL_CLK_KHZ;
348 dp->dp_display.max_dp_lanes = dp->parser->max_dp_lanes;
349
350
351
352
353
354 dp_link_psm_config(dp->link, &dp->panel->link_info, false);
355
356 dp_link_reset_phy_params_vx_px(dp->link);
357 rc = dp_ctrl_on_link(dp->ctrl);
358 if (rc) {
359 DRM_ERROR("failed to complete DP link training\n");
360 goto end;
361 }
362
363 dp_add_event(dp, EV_USER_NOTIFICATION, true, 0);
364
365end:
366 return rc;
367}
368
369static void dp_display_host_init(struct dp_display_private *dp, int reset)
370{
371 bool flip = false;
372
373 DRM_DEBUG_DP("core_initialized=%d\n", dp->core_initialized);
374 if (dp->core_initialized) {
375 DRM_DEBUG_DP("DP core already initialized\n");
376 return;
377 }
378
379 if (dp->usbpd->orientation == ORIENTATION_CC2)
380 flip = true;
381
382 dp_power_init(dp->power, flip);
383 dp_ctrl_host_init(dp->ctrl, flip, reset);
384 dp_aux_init(dp->aux);
385 dp->core_initialized = true;
386}
387
388static void dp_display_host_deinit(struct dp_display_private *dp)
389{
390 if (!dp->core_initialized) {
391 DRM_DEBUG_DP("DP core not initialized\n");
392 return;
393 }
394
395 dp_ctrl_host_deinit(dp->ctrl);
396 dp_aux_deinit(dp->aux);
397 dp_power_deinit(dp->power);
398
399 dp->core_initialized = false;
400}
401
402static int dp_display_usbpd_configure_cb(struct device *dev)
403{
404 struct dp_display_private *dp = dev_get_dp_display_private(dev);
405
406 dp_display_host_init(dp, false);
407
408 return dp_display_process_hpd_high(dp);
409}
410
411static int dp_display_usbpd_disconnect_cb(struct device *dev)
412{
413 int rc = 0;
414 struct dp_display_private *dp = dev_get_dp_display_private(dev);
415
416 dp_add_event(dp, EV_USER_NOTIFICATION, false, 0);
417
418 return rc;
419}
420
421static void dp_display_handle_video_request(struct dp_display_private *dp)
422{
423 if (dp->link->sink_request & DP_TEST_LINK_VIDEO_PATTERN) {
424 dp->panel->video_test = true;
425 dp_link_send_test_response(dp->link);
426 }
427}
428
429static int dp_display_handle_port_ststus_changed(struct dp_display_private *dp)
430{
431 int rc = 0;
432
433 if (dp_display_is_sink_count_zero(dp)) {
434 DRM_DEBUG_DP("sink count is zero, nothing to do\n");
435 if (dp->hpd_state != ST_DISCONNECTED) {
436 dp->hpd_state = ST_DISCONNECT_PENDING;
437 dp_add_event(dp, EV_USER_NOTIFICATION, false, 0);
438 }
439 } else {
440 if (dp->hpd_state == ST_DISCONNECTED) {
441 dp->hpd_state = ST_CONNECT_PENDING;
442 rc = dp_display_process_hpd_high(dp);
443 if (rc)
444 dp->hpd_state = ST_DISCONNECTED;
445 }
446 }
447
448 return rc;
449}
450
451static int dp_display_handle_irq_hpd(struct dp_display_private *dp)
452{
453 u32 sink_request = dp->link->sink_request;
454
455 DRM_DEBUG_DP("%d\n", sink_request);
456 if (dp->hpd_state == ST_DISCONNECTED) {
457 if (sink_request & DP_LINK_STATUS_UPDATED) {
458 DRM_DEBUG_DP("Disconnected sink_request: %d\n", sink_request);
459 DRM_ERROR("Disconnected, no DP_LINK_STATUS_UPDATED\n");
460 return -EINVAL;
461 }
462 }
463
464 dp_ctrl_handle_sink_request(dp->ctrl);
465
466 if (sink_request & DP_TEST_LINK_VIDEO_PATTERN)
467 dp_display_handle_video_request(dp);
468
469 return 0;
470}
471
472static int dp_display_usbpd_attention_cb(struct device *dev)
473{
474 int rc = 0;
475 u32 sink_request;
476 struct dp_display_private *dp = dev_get_dp_display_private(dev);
477
478
479 rc = dp_link_process_request(dp->link);
480 if (!rc) {
481 sink_request = dp->link->sink_request;
482 DRM_DEBUG_DP("hpd_state=%d sink_request=%d\n", dp->hpd_state, sink_request);
483 if (sink_request & DS_PORT_STATUS_CHANGED)
484 rc = dp_display_handle_port_ststus_changed(dp);
485 else
486 rc = dp_display_handle_irq_hpd(dp);
487 }
488
489 return rc;
490}
491
492static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
493{
494 struct dp_usbpd *hpd = dp->usbpd;
495 u32 state;
496 u32 tout = DP_TIMEOUT_5_SECOND;
497 int ret;
498
499 if (!hpd)
500 return 0;
501
502 mutex_lock(&dp->event_mutex);
503
504 state = dp->hpd_state;
505 DRM_DEBUG_DP("hpd_state=%d\n", state);
506 if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
507 mutex_unlock(&dp->event_mutex);
508 return 0;
509 }
510
511 if (state == ST_CONNECT_PENDING || state == ST_CONNECTED) {
512 mutex_unlock(&dp->event_mutex);
513 return 0;
514 }
515
516 if (state == ST_DISCONNECT_PENDING) {
517
518 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 1);
519 mutex_unlock(&dp->event_mutex);
520 return 0;
521 }
522
523 dp->hpd_state = ST_CONNECT_PENDING;
524
525 hpd->hpd_high = 1;
526
527 ret = dp_display_usbpd_configure_cb(&dp->pdev->dev);
528 if (ret) {
529 hpd->hpd_high = 0;
530 dp->hpd_state = ST_DISCONNECTED;
531
532 if (ret == -ECONNRESET) {
533 dp->core_initialized = false;
534 }
535
536 } else {
537
538 dp_add_event(dp, EV_CONNECT_PENDING_TIMEOUT, 0, tout);
539 }
540
541
542 dp_catalog_hpd_config_intr(dp->catalog,
543 DP_DP_IRQ_HPD_INT_MASK | DP_DP_HPD_REPLUG_INT_MASK, true);
544
545 mutex_unlock(&dp->event_mutex);
546
547
548 return 0;
549};
550
551static int dp_display_enable(struct dp_display_private *dp, u32 data);
552static int dp_display_disable(struct dp_display_private *dp, u32 data);
553
554static int dp_connect_pending_timeout(struct dp_display_private *dp, u32 data)
555{
556 u32 state;
557
558 mutex_lock(&dp->event_mutex);
559
560 state = dp->hpd_state;
561 if (state == ST_CONNECT_PENDING)
562 dp->hpd_state = ST_CONNECTED;
563
564 mutex_unlock(&dp->event_mutex);
565
566 return 0;
567}
568
569static void dp_display_handle_plugged_change(struct msm_dp *dp_display,
570 bool plugged)
571{
572 struct dp_display_private *dp;
573
574 dp = container_of(dp_display,
575 struct dp_display_private, dp_display);
576
577
578 if (dp_display->plugged_cb && dp_display->codec_dev &&
579 dp->audio_supported)
580 dp_display->plugged_cb(dp_display->codec_dev, plugged);
581}
582
583static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
584{
585 struct dp_usbpd *hpd = dp->usbpd;
586 u32 state;
587
588 if (!hpd)
589 return 0;
590
591 mutex_lock(&dp->event_mutex);
592
593 state = dp->hpd_state;
594
595
596 dp_catalog_hpd_config_intr(dp->catalog,
597 DP_DP_IRQ_HPD_INT_MASK | DP_DP_HPD_REPLUG_INT_MASK, false);
598
599
600 dp_del_event(dp, EV_IRQ_HPD_INT);
601
602 if (state == ST_DISCONNECTED) {
603
604 if (dp->link->sink_count == 0) {
605 dp_ctrl_off_phy(dp->ctrl);
606 hpd->hpd_high = 0;
607 dp->core_initialized = false;
608 }
609 mutex_unlock(&dp->event_mutex);
610 return 0;
611 }
612
613 if (state == ST_DISCONNECT_PENDING) {
614 mutex_unlock(&dp->event_mutex);
615 return 0;
616 }
617
618 if (state == ST_CONNECT_PENDING) {
619
620 dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 1);
621 mutex_unlock(&dp->event_mutex);
622 return 0;
623 }
624
625 dp->hpd_state = ST_DISCONNECT_PENDING;
626
627
628 dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_PLUG_INT_MASK, false);
629
630 hpd->hpd_high = 0;
631
632
633
634
635
636 dp_display_usbpd_disconnect_cb(&dp->pdev->dev);
637
638
639 dp_add_event(dp, EV_DISCONNECT_PENDING_TIMEOUT, 0, DP_TIMEOUT_5_SECOND);
640
641 DRM_DEBUG_DP("hpd_state=%d\n", state);
642
643 dp_display_handle_plugged_change(&dp->dp_display, false);
644
645
646 dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_PLUG_INT_MASK, true);
647
648
649 mutex_unlock(&dp->event_mutex);
650 return 0;
651}
652
653static int dp_disconnect_pending_timeout(struct dp_display_private *dp, u32 data)
654{
655 u32 state;
656
657 mutex_lock(&dp->event_mutex);
658
659 state = dp->hpd_state;
660 if (state == ST_DISCONNECT_PENDING)
661 dp->hpd_state = ST_DISCONNECTED;
662
663 mutex_unlock(&dp->event_mutex);
664
665 return 0;
666}
667
668static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
669{
670 u32 state;
671 int ret;
672
673 mutex_lock(&dp->event_mutex);
674
675
676 state = dp->hpd_state;
677 if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
678 mutex_unlock(&dp->event_mutex);
679 return 0;
680 }
681
682 if (state == ST_CONNECT_PENDING) {
683
684 dp_add_event(dp, EV_IRQ_HPD_INT, 0, 1);
685 mutex_unlock(&dp->event_mutex);
686 return 0;
687 }
688
689 if (state == ST_CONNECT_PENDING || state == ST_DISCONNECT_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 ret = dp_display_usbpd_attention_cb(&dp->pdev->dev);
697 if (ret == -ECONNRESET) {
698 dp->core_initialized = false;
699 }
700 DRM_DEBUG_DP("hpd_state=%d\n", state);
701
702 mutex_unlock(&dp->event_mutex);
703
704 return 0;
705}
706
707static void dp_display_deinit_sub_modules(struct dp_display_private *dp)
708{
709 dp_debug_put(dp->debug);
710 dp_panel_put(dp->panel);
711 dp_aux_put(dp->aux);
712 dp_audio_put(dp->audio);
713}
714
715static int dp_init_sub_modules(struct dp_display_private *dp)
716{
717 int rc = 0;
718 struct device *dev = &dp->pdev->dev;
719 struct dp_usbpd_cb *cb = &dp->usbpd_cb;
720 struct dp_panel_in panel_in = {
721 .dev = dev,
722 };
723
724
725 cb->configure = dp_display_usbpd_configure_cb;
726 cb->disconnect = dp_display_usbpd_disconnect_cb;
727 cb->attention = dp_display_usbpd_attention_cb;
728
729 dp->usbpd = dp_hpd_get(dev, cb);
730 if (IS_ERR(dp->usbpd)) {
731 rc = PTR_ERR(dp->usbpd);
732 DRM_ERROR("failed to initialize hpd, rc = %d\n", rc);
733 dp->usbpd = NULL;
734 goto error;
735 }
736
737 dp->parser = dp_parser_get(dp->pdev);
738 if (IS_ERR(dp->parser)) {
739 rc = PTR_ERR(dp->parser);
740 DRM_ERROR("failed to initialize parser, rc = %d\n", rc);
741 dp->parser = NULL;
742 goto error;
743 }
744
745 dp->catalog = dp_catalog_get(dev, &dp->parser->io);
746 if (IS_ERR(dp->catalog)) {
747 rc = PTR_ERR(dp->catalog);
748 DRM_ERROR("failed to initialize catalog, rc = %d\n", rc);
749 dp->catalog = NULL;
750 goto error;
751 }
752
753 dp->power = dp_power_get(dev, dp->parser);
754 if (IS_ERR(dp->power)) {
755 rc = PTR_ERR(dp->power);
756 DRM_ERROR("failed to initialize power, rc = %d\n", rc);
757 dp->power = NULL;
758 goto error;
759 }
760
761 dp->aux = dp_aux_get(dev, dp->catalog);
762 if (IS_ERR(dp->aux)) {
763 rc = PTR_ERR(dp->aux);
764 DRM_ERROR("failed to initialize aux, rc = %d\n", rc);
765 dp->aux = NULL;
766 goto error;
767 }
768
769 dp->link = dp_link_get(dev, dp->aux);
770 if (IS_ERR(dp->link)) {
771 rc = PTR_ERR(dp->link);
772 DRM_ERROR("failed to initialize link, rc = %d\n", rc);
773 dp->link = NULL;
774 goto error_link;
775 }
776
777 panel_in.aux = dp->aux;
778 panel_in.catalog = dp->catalog;
779 panel_in.link = dp->link;
780
781 dp->panel = dp_panel_get(&panel_in);
782 if (IS_ERR(dp->panel)) {
783 rc = PTR_ERR(dp->panel);
784 DRM_ERROR("failed to initialize panel, rc = %d\n", rc);
785 dp->panel = NULL;
786 goto error_link;
787 }
788
789 dp->ctrl = dp_ctrl_get(dev, dp->link, dp->panel, dp->aux,
790 dp->power, dp->catalog, dp->parser);
791 if (IS_ERR(dp->ctrl)) {
792 rc = PTR_ERR(dp->ctrl);
793 DRM_ERROR("failed to initialize ctrl, rc = %d\n", rc);
794 dp->ctrl = NULL;
795 goto error_ctrl;
796 }
797
798 dp->audio = dp_audio_get(dp->pdev, dp->panel, dp->catalog);
799 if (IS_ERR(dp->audio)) {
800 rc = PTR_ERR(dp->audio);
801 pr_err("failed to initialize audio, rc = %d\n", rc);
802 dp->audio = NULL;
803 goto error_ctrl;
804 }
805
806 return rc;
807
808error_ctrl:
809 dp_panel_put(dp->panel);
810error_link:
811 dp_aux_put(dp->aux);
812error:
813 return rc;
814}
815
816static int dp_display_set_mode(struct msm_dp *dp_display,
817 struct dp_display_mode *mode)
818{
819 struct dp_display_private *dp;
820
821 dp = container_of(dp_display, struct dp_display_private, dp_display);
822
823 dp->panel->dp_mode.drm_mode = mode->drm_mode;
824 dp->panel->dp_mode.bpp = mode->bpp;
825 dp->panel->dp_mode.capabilities = mode->capabilities;
826 dp_panel_init_panel_info(dp->panel);
827 return 0;
828}
829
830static int dp_display_prepare(struct msm_dp *dp_display)
831{
832 return 0;
833}
834
835static int dp_display_enable(struct dp_display_private *dp, u32 data)
836{
837 int rc = 0;
838 struct msm_dp *dp_display = &dp->dp_display;
839
840 DRM_DEBUG_DP("sink_count=%d\n", dp->link->sink_count);
841 if (dp_display->power_on) {
842 DRM_DEBUG_DP("Link already setup, return\n");
843 return 0;
844 }
845
846 rc = dp_ctrl_on_stream(dp->ctrl);
847 if (!rc)
848 dp_display->power_on = true;
849
850 return rc;
851}
852
853static int dp_display_post_enable(struct msm_dp *dp_display)
854{
855 struct dp_display_private *dp;
856 u32 rate;
857
858 dp = container_of(dp_display, struct dp_display_private, dp_display);
859
860 rate = dp->link->link_params.rate;
861
862 if (dp->audio_supported) {
863 dp->audio->bw_code = drm_dp_link_rate_to_bw_code(rate);
864 dp->audio->lane_count = dp->link->link_params.num_lanes;
865 }
866
867
868 dp_display_handle_plugged_change(dp_display, true);
869 return 0;
870}
871
872static int dp_display_disable(struct dp_display_private *dp, u32 data)
873{
874 struct msm_dp *dp_display = &dp->dp_display;
875
876 if (!dp_display->power_on)
877 return 0;
878
879
880 if (dp_display->audio_enabled) {
881
882 dp_display_handle_plugged_change(dp_display, false);
883 if (!wait_for_completion_timeout(&dp->audio_comp,
884 HZ * 5))
885 DRM_ERROR("audio comp timeout\n");
886 }
887
888 dp_display->audio_enabled = false;
889
890
891 if (dp->link->sink_count == 0) {
892 dp_ctrl_off_link_stream(dp->ctrl);
893 } else {
894 dp_ctrl_off(dp->ctrl);
895 dp->core_initialized = false;
896 }
897
898 dp_display->power_on = false;
899
900 DRM_DEBUG_DP("sink count: %d\n", dp->link->sink_count);
901 return 0;
902}
903
904static int dp_display_unprepare(struct msm_dp *dp_display)
905{
906 return 0;
907}
908
909int dp_display_set_plugged_cb(struct msm_dp *dp_display,
910 hdmi_codec_plugged_cb fn, struct device *codec_dev)
911{
912 bool plugged;
913
914 dp_display->plugged_cb = fn;
915 dp_display->codec_dev = codec_dev;
916 plugged = dp_display->is_connected;
917 dp_display_handle_plugged_change(dp_display, plugged);
918
919 return 0;
920}
921
922int dp_display_validate_mode(struct msm_dp *dp, u32 mode_pclk_khz)
923{
924 const u32 num_components = 3, default_bpp = 24;
925 struct dp_display_private *dp_display;
926 struct dp_link_info *link_info;
927 u32 mode_rate_khz = 0, supported_rate_khz = 0, mode_bpp = 0;
928
929 if (!dp || !mode_pclk_khz || !dp->connector) {
930 DRM_ERROR("invalid params\n");
931 return -EINVAL;
932 }
933
934 dp_display = container_of(dp, struct dp_display_private, dp_display);
935 link_info = &dp_display->panel->link_info;
936
937 mode_bpp = dp->connector->display_info.bpc * num_components;
938 if (!mode_bpp)
939 mode_bpp = default_bpp;
940
941 mode_bpp = dp_panel_get_mode_bpp(dp_display->panel,
942 mode_bpp, mode_pclk_khz);
943
944 mode_rate_khz = mode_pclk_khz * mode_bpp;
945 supported_rate_khz = link_info->num_lanes * link_info->rate * 8;
946
947 if (mode_rate_khz > supported_rate_khz)
948 return MODE_BAD;
949
950 return MODE_OK;
951}
952
953int dp_display_get_modes(struct msm_dp *dp,
954 struct dp_display_mode *dp_mode)
955{
956 struct dp_display_private *dp_display;
957 int ret = 0;
958
959 if (!dp) {
960 DRM_ERROR("invalid params\n");
961 return 0;
962 }
963
964 dp_display = container_of(dp, struct dp_display_private, dp_display);
965
966 ret = dp_panel_get_modes(dp_display->panel,
967 dp->connector, dp_mode);
968 if (dp_mode->drm_mode.clock)
969 dp->max_pclk_khz = dp_mode->drm_mode.clock;
970 return ret;
971}
972
973bool dp_display_check_video_test(struct msm_dp *dp)
974{
975 struct dp_display_private *dp_display;
976
977 dp_display = container_of(dp, struct dp_display_private, dp_display);
978
979 return dp_display->panel->video_test;
980}
981
982int dp_display_get_test_bpp(struct msm_dp *dp)
983{
984 struct dp_display_private *dp_display;
985
986 if (!dp) {
987 DRM_ERROR("invalid params\n");
988 return 0;
989 }
990
991 dp_display = container_of(dp, struct dp_display_private, dp_display);
992
993 return dp_link_bit_depth_to_bpp(
994 dp_display->link->test_video.test_bit_depth);
995}
996
997void msm_dp_snapshot(struct msm_disp_state *disp_state, struct msm_dp *dp)
998{
999 struct dp_display_private *dp_display;
1000
1001 dp_display = container_of(dp, struct dp_display_private, dp_display);
1002
1003
1004
1005
1006
1007
1008
1009
1010 mutex_lock(&dp_display->event_mutex);
1011
1012 if (!dp->power_on) {
1013 mutex_unlock(&dp_display->event_mutex);
1014 return;
1015 }
1016
1017 dp_catalog_snapshot(dp_display->catalog, disp_state);
1018
1019 mutex_unlock(&dp_display->event_mutex);
1020}
1021
1022static void dp_display_config_hpd(struct dp_display_private *dp)
1023{
1024
1025 dp_display_host_init(dp, true);
1026 dp_catalog_ctrl_hpd_config(dp->catalog);
1027
1028
1029
1030
1031
1032 enable_irq(dp->irq);
1033}
1034
1035static int hpd_event_thread(void *data)
1036{
1037 struct dp_display_private *dp_priv;
1038 unsigned long flag;
1039 struct dp_event *todo;
1040 int timeout_mode = 0;
1041
1042 dp_priv = (struct dp_display_private *)data;
1043
1044 while (1) {
1045 if (timeout_mode) {
1046 wait_event_timeout(dp_priv->event_q,
1047 (dp_priv->event_pndx == dp_priv->event_gndx),
1048 EVENT_TIMEOUT);
1049 } else {
1050 wait_event_interruptible(dp_priv->event_q,
1051 (dp_priv->event_pndx != dp_priv->event_gndx));
1052 }
1053 spin_lock_irqsave(&dp_priv->event_lock, flag);
1054 todo = &dp_priv->event_list[dp_priv->event_gndx];
1055 if (todo->delay) {
1056 struct dp_event *todo_next;
1057
1058 dp_priv->event_gndx++;
1059 dp_priv->event_gndx %= DP_EVENT_Q_MAX;
1060
1061
1062 todo_next = &dp_priv->event_list[dp_priv->event_pndx++];
1063 dp_priv->event_pndx %= DP_EVENT_Q_MAX;
1064 todo_next->event_id = todo->event_id;
1065 todo_next->data = todo->data;
1066 todo_next->delay = todo->delay - 1;
1067
1068
1069 todo->event_id = EV_NO_EVENT;
1070 todo->delay = 0;
1071
1072
1073 timeout_mode = 1;
1074 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1075 continue;
1076 }
1077
1078
1079 if (dp_priv->event_pndx == dp_priv->event_gndx) {
1080 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1081 continue;
1082 }
1083
1084 dp_priv->event_gndx++;
1085 dp_priv->event_gndx %= DP_EVENT_Q_MAX;
1086 timeout_mode = 0;
1087 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1088
1089 switch (todo->event_id) {
1090 case EV_HPD_INIT_SETUP:
1091 dp_display_config_hpd(dp_priv);
1092 break;
1093 case EV_HPD_PLUG_INT:
1094 dp_hpd_plug_handle(dp_priv, todo->data);
1095 break;
1096 case EV_HPD_UNPLUG_INT:
1097 dp_hpd_unplug_handle(dp_priv, todo->data);
1098 break;
1099 case EV_IRQ_HPD_INT:
1100 dp_irq_hpd_handle(dp_priv, todo->data);
1101 break;
1102 case EV_USER_NOTIFICATION:
1103 dp_display_send_hpd_notification(dp_priv,
1104 todo->data);
1105 break;
1106 case EV_CONNECT_PENDING_TIMEOUT:
1107 dp_connect_pending_timeout(dp_priv,
1108 todo->data);
1109 break;
1110 case EV_DISCONNECT_PENDING_TIMEOUT:
1111 dp_disconnect_pending_timeout(dp_priv,
1112 todo->data);
1113 break;
1114 default:
1115 break;
1116 }
1117 }
1118
1119 return 0;
1120}
1121
1122static void dp_hpd_event_setup(struct dp_display_private *dp_priv)
1123{
1124 init_waitqueue_head(&dp_priv->event_q);
1125 spin_lock_init(&dp_priv->event_lock);
1126
1127 kthread_run(hpd_event_thread, dp_priv, "dp_hpd_handler");
1128}
1129
1130static irqreturn_t dp_display_irq_handler(int irq, void *dev_id)
1131{
1132 struct dp_display_private *dp = dev_id;
1133 irqreturn_t ret = IRQ_HANDLED;
1134 u32 hpd_isr_status;
1135
1136 if (!dp) {
1137 DRM_ERROR("invalid data\n");
1138 return IRQ_NONE;
1139 }
1140
1141 hpd_isr_status = dp_catalog_hpd_get_intr_status(dp->catalog);
1142
1143 DRM_DEBUG_DP("hpd isr status=%#x\n", hpd_isr_status);
1144 if (hpd_isr_status & 0x0F) {
1145
1146 if (hpd_isr_status & DP_DP_HPD_PLUG_INT_MASK)
1147 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 0);
1148
1149 if (hpd_isr_status & DP_DP_IRQ_HPD_INT_MASK) {
1150
1151 dp_del_event(dp, EV_CONNECT_PENDING_TIMEOUT);
1152 dp_add_event(dp, EV_IRQ_HPD_INT, 0, 0);
1153 }
1154
1155 if (hpd_isr_status & DP_DP_HPD_REPLUG_INT_MASK) {
1156 dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);
1157 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 3);
1158 }
1159
1160 if (hpd_isr_status & DP_DP_HPD_UNPLUG_INT_MASK)
1161 dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);
1162 }
1163
1164
1165 dp_ctrl_isr(dp->ctrl);
1166
1167
1168 dp_aux_isr(dp->aux);
1169
1170 return ret;
1171}
1172
1173int dp_display_request_irq(struct msm_dp *dp_display)
1174{
1175 int rc = 0;
1176 struct dp_display_private *dp;
1177
1178 if (!dp_display) {
1179 DRM_ERROR("invalid input\n");
1180 return -EINVAL;
1181 }
1182
1183 dp = container_of(dp_display, struct dp_display_private, dp_display);
1184
1185 dp->irq = irq_of_parse_and_map(dp->pdev->dev.of_node, 0);
1186 if (dp->irq < 0) {
1187 rc = dp->irq;
1188 DRM_ERROR("failed to get irq: %d\n", rc);
1189 return rc;
1190 }
1191
1192 rc = devm_request_irq(&dp->pdev->dev, dp->irq,
1193 dp_display_irq_handler,
1194 IRQF_TRIGGER_HIGH, "dp_display_isr", dp);
1195 if (rc < 0) {
1196 DRM_ERROR("failed to request IRQ%u: %d\n",
1197 dp->irq, rc);
1198 return rc;
1199 }
1200 disable_irq(dp->irq);
1201
1202 return 0;
1203}
1204
1205static const struct msm_dp_desc *dp_display_get_desc(struct platform_device *pdev,
1206 unsigned int *id)
1207{
1208 const struct msm_dp_config *cfg = of_device_get_match_data(&pdev->dev);
1209 struct resource *res;
1210 int i;
1211
1212 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1213 if (!res)
1214 return NULL;
1215
1216 for (i = 0; i < cfg->num_descs; i++) {
1217 if (cfg->descs[i].io_start == res->start) {
1218 *id = i;
1219 return &cfg->descs[i];
1220 }
1221 }
1222
1223 dev_err(&pdev->dev, "unknown displayport instance\n");
1224 return NULL;
1225}
1226
1227static int dp_display_probe(struct platform_device *pdev)
1228{
1229 int rc = 0;
1230 struct dp_display_private *dp;
1231 const struct msm_dp_desc *desc;
1232
1233 if (!pdev || !pdev->dev.of_node) {
1234 DRM_ERROR("pdev not found\n");
1235 return -ENODEV;
1236 }
1237
1238 dp = devm_kzalloc(&pdev->dev, sizeof(*dp), GFP_KERNEL);
1239 if (!dp)
1240 return -ENOMEM;
1241
1242 desc = dp_display_get_desc(pdev, &dp->id);
1243 if (!desc)
1244 return -EINVAL;
1245
1246 dp->pdev = pdev;
1247 dp->name = "drm_dp";
1248 dp->dp_display.connector_type = desc->connector_type;
1249
1250 rc = dp_init_sub_modules(dp);
1251 if (rc) {
1252 DRM_ERROR("init sub module failed\n");
1253 return -EPROBE_DEFER;
1254 }
1255
1256 mutex_init(&dp->event_mutex);
1257
1258
1259 dp->dp_display.dp_audio = dp->audio;
1260
1261 init_completion(&dp->audio_comp);
1262
1263 platform_set_drvdata(pdev, &dp->dp_display);
1264
1265 rc = component_add(&pdev->dev, &dp_display_comp_ops);
1266 if (rc) {
1267 DRM_ERROR("component add failed, rc=%d\n", rc);
1268 dp_display_deinit_sub_modules(dp);
1269 }
1270
1271 return rc;
1272}
1273
1274static int dp_display_remove(struct platform_device *pdev)
1275{
1276 struct dp_display_private *dp = dev_get_dp_display_private(&pdev->dev);
1277
1278 dp_display_deinit_sub_modules(dp);
1279
1280 component_del(&pdev->dev, &dp_display_comp_ops);
1281 platform_set_drvdata(pdev, NULL);
1282
1283 return 0;
1284}
1285
1286static int dp_pm_resume(struct device *dev)
1287{
1288 struct platform_device *pdev = to_platform_device(dev);
1289 struct msm_dp *dp_display = platform_get_drvdata(pdev);
1290 struct dp_display_private *dp;
1291 int sink_count = 0;
1292
1293 dp = container_of(dp_display, struct dp_display_private, dp_display);
1294
1295 mutex_lock(&dp->event_mutex);
1296
1297 DRM_DEBUG_DP("Before, core_inited=%d power_on=%d\n",
1298 dp->core_initialized, dp_display->power_on);
1299
1300
1301 dp->hpd_state = ST_DISCONNECTED;
1302
1303
1304 dp_display_host_init(dp, true);
1305
1306 dp_catalog_ctrl_hpd_config(dp->catalog);
1307
1308
1309
1310
1311
1312 dp_link_psm_config(dp->link, &dp->panel->link_info, false);
1313
1314 if (dp_catalog_link_is_connected(dp->catalog)) {
1315 sink_count = drm_dp_read_sink_count(dp->aux);
1316 if (sink_count < 0)
1317 sink_count = 0;
1318 }
1319
1320 dp->link->sink_count = sink_count;
1321
1322
1323
1324
1325
1326
1327 if (dp->link->sink_count) {
1328 dp->dp_display.is_connected = true;
1329 } else {
1330 dp->dp_display.is_connected = false;
1331 dp_display_handle_plugged_change(dp_display, false);
1332 }
1333
1334 DRM_DEBUG_DP("After, sink_count=%d is_connected=%d core_inited=%d power_on=%d\n",
1335 dp->link->sink_count, dp->dp_display.is_connected,
1336 dp->core_initialized, dp_display->power_on);
1337
1338 mutex_unlock(&dp->event_mutex);
1339
1340 return 0;
1341}
1342
1343static int dp_pm_suspend(struct device *dev)
1344{
1345 struct platform_device *pdev = to_platform_device(dev);
1346 struct msm_dp *dp_display = platform_get_drvdata(pdev);
1347 struct dp_display_private *dp;
1348
1349 dp = container_of(dp_display, struct dp_display_private, dp_display);
1350
1351 mutex_lock(&dp->event_mutex);
1352
1353 DRM_DEBUG_DP("Before, core_inited=%d power_on=%d\n",
1354 dp->core_initialized, dp_display->power_on);
1355
1356 if (dp->core_initialized == true) {
1357
1358 if (dp_power_clk_status(dp->power, DP_CTRL_PM))
1359 dp_ctrl_off_link_stream(dp->ctrl);
1360
1361 dp_display_host_deinit(dp);
1362 }
1363
1364 dp->hpd_state = ST_SUSPENDED;
1365
1366
1367 dp->core_initialized = false;
1368
1369 DRM_DEBUG_DP("After, core_inited=%d power_on=%d\n",
1370 dp->core_initialized, dp_display->power_on);
1371
1372 mutex_unlock(&dp->event_mutex);
1373
1374 return 0;
1375}
1376
1377static int dp_pm_prepare(struct device *dev)
1378{
1379 return 0;
1380}
1381
1382static void dp_pm_complete(struct device *dev)
1383{
1384
1385}
1386
1387static const struct dev_pm_ops dp_pm_ops = {
1388 .suspend = dp_pm_suspend,
1389 .resume = dp_pm_resume,
1390 .prepare = dp_pm_prepare,
1391 .complete = dp_pm_complete,
1392};
1393
1394static struct platform_driver dp_display_driver = {
1395 .probe = dp_display_probe,
1396 .remove = dp_display_remove,
1397 .driver = {
1398 .name = "msm-dp-display",
1399 .of_match_table = dp_dt_match,
1400 .suppress_bind_attrs = true,
1401 .pm = &dp_pm_ops,
1402 },
1403};
1404
1405int __init msm_dp_register(void)
1406{
1407 int ret;
1408
1409 ret = platform_driver_register(&dp_display_driver);
1410 if (ret)
1411 DRM_ERROR("Dp display driver register failed");
1412
1413 return ret;
1414}
1415
1416void __exit msm_dp_unregister(void)
1417{
1418 platform_driver_unregister(&dp_display_driver);
1419}
1420
1421void msm_dp_irq_postinstall(struct msm_dp *dp_display)
1422{
1423 struct dp_display_private *dp;
1424
1425 if (!dp_display)
1426 return;
1427
1428 dp = container_of(dp_display, struct dp_display_private, dp_display);
1429
1430 dp_hpd_event_setup(dp);
1431
1432 dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100);
1433}
1434
1435void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
1436{
1437 struct dp_display_private *dp;
1438 struct device *dev;
1439 int rc;
1440
1441 dp = container_of(dp_display, struct dp_display_private, dp_display);
1442 dev = &dp->pdev->dev;
1443
1444 dp->debug = dp_debug_get(dev, dp->panel, dp->usbpd,
1445 dp->link, dp->dp_display.connector,
1446 minor);
1447 if (IS_ERR(dp->debug)) {
1448 rc = PTR_ERR(dp->debug);
1449 DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
1450 dp->debug = NULL;
1451 }
1452}
1453
1454int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
1455 struct drm_encoder *encoder)
1456{
1457 struct msm_drm_private *priv;
1458 int ret;
1459
1460 if (WARN_ON(!encoder) || WARN_ON(!dp_display) || WARN_ON(!dev))
1461 return -EINVAL;
1462
1463 priv = dev->dev_private;
1464 dp_display->drm_dev = dev;
1465
1466 ret = dp_display_request_irq(dp_display);
1467 if (ret) {
1468 DRM_ERROR("request_irq failed, ret=%d\n", ret);
1469 return ret;
1470 }
1471
1472 dp_display->encoder = encoder;
1473
1474 dp_display->connector = dp_drm_connector_init(dp_display);
1475 if (IS_ERR(dp_display->connector)) {
1476 ret = PTR_ERR(dp_display->connector);
1477 DRM_DEV_ERROR(dev->dev,
1478 "failed to create dp connector: %d\n", ret);
1479 dp_display->connector = NULL;
1480 return ret;
1481 }
1482
1483 priv->connectors[priv->num_connectors++] = dp_display->connector;
1484 return 0;
1485}
1486
1487int msm_dp_display_enable(struct msm_dp *dp, struct drm_encoder *encoder)
1488{
1489 int rc = 0;
1490 struct dp_display_private *dp_display;
1491 u32 state;
1492
1493 dp_display = container_of(dp, struct dp_display_private, dp_display);
1494 if (!dp_display->dp_mode.drm_mode.clock) {
1495 DRM_ERROR("invalid params\n");
1496 return -EINVAL;
1497 }
1498
1499 mutex_lock(&dp_display->event_mutex);
1500
1501
1502 dp_del_event(dp_display, EV_CONNECT_PENDING_TIMEOUT);
1503
1504 rc = dp_display_set_mode(dp, &dp_display->dp_mode);
1505 if (rc) {
1506 DRM_ERROR("Failed to perform a mode set, rc=%d\n", rc);
1507 mutex_unlock(&dp_display->event_mutex);
1508 return rc;
1509 }
1510
1511 rc = dp_display_prepare(dp);
1512 if (rc) {
1513 DRM_ERROR("DP display prepare failed, rc=%d\n", rc);
1514 mutex_unlock(&dp_display->event_mutex);
1515 return rc;
1516 }
1517
1518 state = dp_display->hpd_state;
1519
1520 if (state == ST_DISPLAY_OFF)
1521 dp_display_host_init(dp_display, true);
1522
1523 dp_display_enable(dp_display, 0);
1524
1525 rc = dp_display_post_enable(dp);
1526 if (rc) {
1527 DRM_ERROR("DP display post enable failed, rc=%d\n", rc);
1528 dp_display_disable(dp_display, 0);
1529 dp_display_unprepare(dp);
1530 }
1531
1532
1533 if (state == ST_DISPLAY_OFF)
1534 dp_add_event(dp_display, EV_IRQ_HPD_INT, 0, 0);
1535
1536
1537 dp_display->hpd_state = ST_CONNECTED;
1538
1539 mutex_unlock(&dp_display->event_mutex);
1540
1541 return rc;
1542}
1543
1544int msm_dp_display_pre_disable(struct msm_dp *dp, struct drm_encoder *encoder)
1545{
1546 struct dp_display_private *dp_display;
1547
1548 dp_display = container_of(dp, struct dp_display_private, dp_display);
1549
1550 dp_ctrl_push_idle(dp_display->ctrl);
1551
1552 return 0;
1553}
1554
1555int msm_dp_display_disable(struct msm_dp *dp, struct drm_encoder *encoder)
1556{
1557 int rc = 0;
1558 u32 state;
1559 struct dp_display_private *dp_display;
1560
1561 dp_display = container_of(dp, struct dp_display_private, dp_display);
1562
1563 mutex_lock(&dp_display->event_mutex);
1564
1565
1566 dp_del_event(dp_display, EV_DISCONNECT_PENDING_TIMEOUT);
1567
1568 dp_display_disable(dp_display, 0);
1569
1570 rc = dp_display_unprepare(dp);
1571 if (rc)
1572 DRM_ERROR("DP display unprepare failed, rc=%d\n", rc);
1573
1574 state = dp_display->hpd_state;
1575 if (state == ST_DISCONNECT_PENDING) {
1576
1577 dp_display->hpd_state = ST_DISCONNECTED;
1578 } else {
1579 dp_display->hpd_state = ST_DISPLAY_OFF;
1580 }
1581
1582 mutex_unlock(&dp_display->event_mutex);
1583 return rc;
1584}
1585
1586void msm_dp_display_mode_set(struct msm_dp *dp, struct drm_encoder *encoder,
1587 struct drm_display_mode *mode,
1588 struct drm_display_mode *adjusted_mode)
1589{
1590 struct dp_display_private *dp_display;
1591
1592 dp_display = container_of(dp, struct dp_display_private, dp_display);
1593
1594 memset(&dp_display->dp_mode, 0x0, sizeof(struct dp_display_mode));
1595
1596 if (dp_display_check_video_test(dp))
1597 dp_display->dp_mode.bpp = dp_display_get_test_bpp(dp);
1598 else
1599 dp_display->dp_mode.bpp = dp->connector->display_info.bpc * 3;
1600
1601 if (!dp_display->dp_mode.bpp)
1602 dp_display->dp_mode.bpp = 24;
1603
1604 drm_mode_copy(&dp_display->dp_mode.drm_mode, adjusted_mode);
1605
1606 dp_display->dp_mode.v_active_low =
1607 !!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NVSYNC);
1608
1609 dp_display->dp_mode.h_active_low =
1610 !!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NHSYNC);
1611}
1612
