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drm/exynos: check crtc's dpms mode at SetCrtc
[linux-2.6-block.git] / drivers / gpu / drm / exynos / exynos_drm_vidi.c
CommitLineData
b73d1230
ID		 1/* exynos_drm_vidi.c
2 *
3 * Copyright (C) 2012 Samsung Electronics Co.Ltd
4 * Authors:
5 * Inki Dae <inki.dae@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 */
13#include "drmP.h"
14
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/platform_device.h>
18
19#include <drm/exynos_drm.h>
20
21#include "drm_edid.h"
22#include "drm_crtc_helper.h"
23
24#include "exynos_drm_drv.h"
25#include "exynos_drm_crtc.h"
26#include "exynos_drm_encoder.h"
27
28/* vidi has totally three virtual windows. */
29#define WINDOWS_NR 3
30
31#define get_vidi_context(dev) platform_get_drvdata(to_platform_device(dev))
32
33struct vidi_win_data {
34 unsigned int offset_x;
35 unsigned int offset_y;
36 unsigned int ovl_width;
37 unsigned int ovl_height;
38 unsigned int fb_width;
39 unsigned int fb_height;
40 unsigned int bpp;
41 dma_addr_t dma_addr;
42 void __iomem *vaddr;
43 unsigned int buf_offsize;
44 unsigned int line_size; /* bytes */
45 bool enabled;
46};
47
48struct vidi_context {
49 struct exynos_drm_subdrv subdrv;
50 struct drm_crtc *crtc;
51 struct vidi_win_data win_data[WINDOWS_NR];
52 struct edid *raw_edid;
53 unsigned int clkdiv;
54 unsigned int default_win;
55 unsigned long irq_flags;
56 unsigned int connected;
57 bool vblank_on;
58 bool suspended;
59 struct work_struct work;
60 struct mutex lock;
61};
62
63static const char fake_edid_info[] = {
64 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x4c, 0x2d, 0x05, 0x05,
65 0x00, 0x00, 0x00, 0x00, 0x30, 0x12, 0x01, 0x03, 0x80, 0x10, 0x09, 0x78,
66 0x0a, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, 0xbd,
67 0xee, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
68 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x66, 0x21, 0x50, 0xb0, 0x51, 0x00,
69 0x1b, 0x30, 0x40, 0x70, 0x36, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e,
70 0x01, 0x1d, 0x00, 0x72, 0x51, 0xd0, 0x1e, 0x20, 0x6e, 0x28, 0x55, 0x00,
71 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18,
72 0x4b, 0x1a, 0x44, 0x17, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
73 0x00, 0x00, 0x00, 0xfc, 0x00, 0x53, 0x41, 0x4d, 0x53, 0x55, 0x4e, 0x47,
74 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0xbc, 0x02, 0x03, 0x1e, 0xf1,
75 0x46, 0x84, 0x05, 0x03, 0x10, 0x20, 0x22, 0x23, 0x09, 0x07, 0x07, 0x83,
76 0x01, 0x00, 0x00, 0xe2, 0x00, 0x0f, 0x67, 0x03, 0x0c, 0x00, 0x10, 0x00,
77 0xb8, 0x2d, 0x01, 0x1d, 0x80, 0x18, 0x71, 0x1c, 0x16, 0x20, 0x58, 0x2c,
78 0x25, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x9e, 0x8c, 0x0a, 0xd0, 0x8a,
79 0x20, 0xe0, 0x2d, 0x10, 0x10, 0x3e, 0x96, 0x00, 0xa0, 0x5a, 0x00, 0x00,
80 0x00, 0x18, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
81 0x45, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00,
82 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
83 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
84 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
85 0x00, 0x00, 0x00, 0x06
86};
87
b73d1230
ID		 88static bool vidi_display_is_connected(struct device *dev)
89{
90 struct vidi_context *ctx = get_vidi_context(dev);
91
92 DRM_DEBUG_KMS("%s\n", __FILE__);
93
94 /*
95 * connection request would come from user side
96 * to do hotplug through specific ioctl.
97 */
98 return ctx->connected ? true : false;
99}
100
101static int vidi_get_edid(struct device *dev, struct drm_connector *connector,
102 u8 *edid, int len)
103{
104 struct vidi_context *ctx = get_vidi_context(dev);
b73d1230
ID		 105
106 DRM_DEBUG_KMS("%s\n", __FILE__);
107
108 /*
109 * the edid data comes from user side and it would be set
110 * to ctx->raw_edid through specific ioctl.
111 */
112 if (!ctx->raw_edid) {
113 DRM_DEBUG_KMS("raw_edid is null.\n");
114 return -EFAULT;
115 }
116
b73d1230
ID		 117 memcpy(edid, ctx->raw_edid, min((1 + ctx->raw_edid->extensions)
118 * EDID_LENGTH, len));
119
120 return 0;
121}
122
123static void *vidi_get_panel(struct device *dev)
124{
125 DRM_DEBUG_KMS("%s\n", __FILE__);
126
127 /* TODO. */
128
129 return NULL;
130}
131
132static int vidi_check_timing(struct device *dev, void *timing)
133{
134 DRM_DEBUG_KMS("%s\n", __FILE__);
135
136 /* TODO. */
137
138 return 0;
139}
140
141static int vidi_display_power_on(struct device *dev, int mode)
142{
143 DRM_DEBUG_KMS("%s\n", __FILE__);
144
145 /* TODO */
146
147 return 0;
148}
149
150static struct exynos_drm_display_ops vidi_display_ops = {
151 .type = EXYNOS_DISPLAY_TYPE_VIDI,
152 .is_connected = vidi_display_is_connected,
153 .get_edid = vidi_get_edid,
154 .get_panel = vidi_get_panel,
155 .check_timing = vidi_check_timing,
156 .power_on = vidi_display_power_on,
157};
158
159static void vidi_dpms(struct device *subdrv_dev, int mode)
160{
161 struct vidi_context *ctx = get_vidi_context(subdrv_dev);
162
163 DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode);
164
165 mutex_lock(&ctx->lock);
166
167 switch (mode) {
168 case DRM_MODE_DPMS_ON:
169 /* TODO. */
170 break;
171 case DRM_MODE_DPMS_STANDBY:
172 case DRM_MODE_DPMS_SUSPEND:
173 case DRM_MODE_DPMS_OFF:
174 /* TODO. */
175 break;
176 default:
177 DRM_DEBUG_KMS("unspecified mode %d\n", mode);
178 break;
179 }
180
181 mutex_unlock(&ctx->lock);
182}
183
184static void vidi_apply(struct device *subdrv_dev)
185{
186 struct vidi_context *ctx = get_vidi_context(subdrv_dev);
677e84c1 187 struct exynos_drm_manager *mgr = ctx->subdrv.manager;
b73d1230
ID		 188 struct exynos_drm_manager_ops *mgr_ops = mgr->ops;
189 struct exynos_drm_overlay_ops *ovl_ops = mgr->overlay_ops;
190 struct vidi_win_data *win_data;
191 int i;
192
193 DRM_DEBUG_KMS("%s\n", __FILE__);
194
195 for (i = 0; i < WINDOWS_NR; i++) {
196 win_data = &ctx->win_data[i];
197 if (win_data->enabled && (ovl_ops && ovl_ops->commit))
198 ovl_ops->commit(subdrv_dev, i);
199 }
200
201 if (mgr_ops && mgr_ops->commit)
202 mgr_ops->commit(subdrv_dev);
203}
204
205static void vidi_commit(struct device *dev)
206{
207 struct vidi_context *ctx = get_vidi_context(dev);
208
209 DRM_DEBUG_KMS("%s\n", __FILE__);
210
211 if (ctx->suspended)
212 return;
213}
214
215static int vidi_enable_vblank(struct device *dev)
216{
217 struct vidi_context *ctx = get_vidi_context(dev);
218
219 DRM_DEBUG_KMS("%s\n", __FILE__);
220
221 if (ctx->suspended)
222 return -EPERM;
223
224 if (!test_and_set_bit(0, &ctx->irq_flags))
225 ctx->vblank_on = true;
226
227 return 0;
228}
229
230static void vidi_disable_vblank(struct device *dev)
231{
232 struct vidi_context *ctx = get_vidi_context(dev);
233
234 DRM_DEBUG_KMS("%s\n", __FILE__);
235
236 if (ctx->suspended)
237 return;
238
239 if (test_and_clear_bit(0, &ctx->irq_flags))
240 ctx->vblank_on = false;
241}
242
243static struct exynos_drm_manager_ops vidi_manager_ops = {
244 .dpms = vidi_dpms,
245 .apply = vidi_apply,
246 .commit = vidi_commit,
247 .enable_vblank = vidi_enable_vblank,
248 .disable_vblank = vidi_disable_vblank,
249};
250
251static void vidi_win_mode_set(struct device *dev,
252 struct exynos_drm_overlay *overlay)
253{
254 struct vidi_context *ctx = get_vidi_context(dev);
255 struct vidi_win_data *win_data;
256 int win;
257 unsigned long offset;
258
259 DRM_DEBUG_KMS("%s\n", __FILE__);
260
261 if (!overlay) {
262 dev_err(dev, "overlay is NULL\n");
263 return;
264 }
265
266 win = overlay->zpos;
267 if (win == DEFAULT_ZPOS)
268 win = ctx->default_win;
269
270 if (win < 0 || win > WINDOWS_NR)
271 return;
272
273 offset = overlay->fb_x * (overlay->bpp >> 3);
274 offset += overlay->fb_y * overlay->pitch;
275
276 DRM_DEBUG_KMS("offset = 0x%lx, pitch = %x\n", offset, overlay->pitch);
277
278 win_data = &ctx->win_data[win];
279
280 win_data->offset_x = overlay->crtc_x;
281 win_data->offset_y = overlay->crtc_y;
282 win_data->ovl_width = overlay->crtc_width;
283 win_data->ovl_height = overlay->crtc_height;
284 win_data->fb_width = overlay->fb_width;
285 win_data->fb_height = overlay->fb_height;
286 win_data->dma_addr = overlay->dma_addr[0] + offset;
287 win_data->vaddr = overlay->vaddr[0] + offset;
288 win_data->bpp = overlay->bpp;
289 win_data->buf_offsize = (overlay->fb_width - overlay->crtc_width) *
290 (overlay->bpp >> 3);
291 win_data->line_size = overlay->crtc_width * (overlay->bpp >> 3);
292
293 /*
294 * some parts of win_data should be transferred to user side
295 * through specific ioctl.
296 */
297
298 DRM_DEBUG_KMS("offset_x = %d, offset_y = %d\n",
299 win_data->offset_x, win_data->offset_y);
300 DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n",
301 win_data->ovl_width, win_data->ovl_height);
302 DRM_DEBUG_KMS("paddr = 0x%lx, vaddr = 0x%lx\n",
303 (unsigned long)win_data->dma_addr,
304 (unsigned long)win_data->vaddr);
305 DRM_DEBUG_KMS("fb_width = %d, crtc_width = %d\n",
306 overlay->fb_width, overlay->crtc_width);
307}
308
309static void vidi_win_commit(struct device *dev, int zpos)
310{
311 struct vidi_context *ctx = get_vidi_context(dev);
312 struct vidi_win_data *win_data;
313 int win = zpos;
314
315 DRM_DEBUG_KMS("%s\n", __FILE__);
316
317 if (ctx->suspended)
318 return;
319
320 if (win == DEFAULT_ZPOS)
321 win = ctx->default_win;
322
323 if (win < 0 || win > WINDOWS_NR)
324 return;
325
326 win_data = &ctx->win_data[win];
327
328 win_data->enabled = true;
329
330 DRM_DEBUG_KMS("dma_addr = 0x%x\n", win_data->dma_addr);
331
332 if (ctx->vblank_on)
333 schedule_work(&ctx->work);
334}
335
336static void vidi_win_disable(struct device *dev, int zpos)
337{
338 struct vidi_context *ctx = get_vidi_context(dev);
339 struct vidi_win_data *win_data;
340 int win = zpos;
341
342 DRM_DEBUG_KMS("%s\n", __FILE__);
343
344 if (win == DEFAULT_ZPOS)
345 win = ctx->default_win;
346
347 if (win < 0 || win > WINDOWS_NR)
348 return;
349
350 win_data = &ctx->win_data[win];
351 win_data->enabled = false;
352
353 /* TODO. */
354}
355
356static struct exynos_drm_overlay_ops vidi_overlay_ops = {
357 .mode_set = vidi_win_mode_set,
358 .commit = vidi_win_commit,
359 .disable = vidi_win_disable,
360};
361
677e84c1
JS		 362static struct exynos_drm_manager vidi_manager = {
363 .pipe = -1,
364 .ops = &vidi_manager_ops,
365 .overlay_ops = &vidi_overlay_ops,
366 .display_ops = &vidi_display_ops,
367};
368
b73d1230
ID		 369static void vidi_finish_pageflip(struct drm_device *drm_dev, int crtc)
370{
371 struct exynos_drm_private *dev_priv = drm_dev->dev_private;
372 struct drm_pending_vblank_event *e, *t;
373 struct timeval now;
374 unsigned long flags;
375 bool is_checked = false;
376
377 spin_lock_irqsave(&drm_dev->event_lock, flags);
378
379 list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list,
380 base.link) {
381 /* if event's pipe isn't same as crtc then ignore it. */
382 if (crtc != e->pipe)
383 continue;
384
385 is_checked = true;
386
387 do_gettimeofday(&now);
388 e->event.sequence = 0;
389 e->event.tv_sec = now.tv_sec;
390 e->event.tv_usec = now.tv_usec;
391
392 list_move_tail(&e->base.link, &e->base.file_priv->event_list);
393 wake_up_interruptible(&e->base.file_priv->event_wait);
394 }
395
396 if (is_checked) {
397 /*
398 * call drm_vblank_put only in case that drm_vblank_get was
399 * called.
400 */
401 if (atomic_read(&drm_dev->vblank_refcount[crtc]) > 0)
402 drm_vblank_put(drm_dev, crtc);
403
404 /*
405 * don't off vblank if vblank_disable_allowed is 1,
406 * because vblank would be off by timer handler.
407 */
408 if (!drm_dev->vblank_disable_allowed)
409 drm_vblank_off(drm_dev, crtc);
410 }
411
412 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
413}
414
415static void vidi_fake_vblank_handler(struct work_struct *work)
416{
417 struct vidi_context *ctx = container_of(work, struct vidi_context,
418 work);
419 struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
677e84c1 420 struct exynos_drm_manager *manager = subdrv->manager;
b73d1230
ID		 421
422 if (manager->pipe < 0)
423 return;
424
425 /* refresh rate is about 50Hz. */
426 usleep_range(16000, 20000);
427
428 drm_handle_vblank(subdrv->drm_dev, manager->pipe);
429 vidi_finish_pageflip(subdrv->drm_dev, manager->pipe);
430}
431
432static int vidi_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
433{
434 DRM_DEBUG_KMS("%s\n", __FILE__);
435
436 /*
437 * enable drm irq mode.
438 * - with irq_enabled = 1, we can use the vblank feature.
439 *
440 * P.S. note that we wouldn't use drm irq handler but
441 * just specific driver own one instead because
442 * drm framework supports only one irq handler.
443 */
444 drm_dev->irq_enabled = 1;
445
446 /*
447 * with vblank_disable_allowed = 1, vblank interrupt will be disabled
448 * by drm timer once a current process gives up ownership of
449 * vblank event.(after drm_vblank_put function is called)
450 */
451 drm_dev->vblank_disable_allowed = 1;
452
453 return 0;
454}
455
29cb6025 456static void vidi_subdrv_remove(struct drm_device *drm_dev, struct device *dev)
b73d1230
ID		 457{
458 DRM_DEBUG_KMS("%s\n", __FILE__);
459
460 /* TODO. */
461}
462
463static int vidi_power_on(struct vidi_context *ctx, bool enable)
464{
465 struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
677e84c1 466 struct device *dev = subdrv->dev;
b73d1230
ID		 467
468 DRM_DEBUG_KMS("%s\n", __FILE__);
469
470 if (enable != false && enable != true)
471 return -EINVAL;
472
473 if (enable) {
474 ctx->suspended = false;
475
476 /* if vblank was enabled status, enable it again. */
477 if (test_and_clear_bit(0, &ctx->irq_flags))
478 vidi_enable_vblank(dev);
479
480 vidi_apply(dev);
481 } else {
482 ctx->suspended = true;
483 }
484
485 return 0;
486}
487
488static int vidi_show_connection(struct device *dev,
489 struct device_attribute *attr, char *buf)
490{
491 int rc;
492 struct vidi_context *ctx = get_vidi_context(dev);
493
494 mutex_lock(&ctx->lock);
495
496 rc = sprintf(buf, "%d\n", ctx->connected);
497
498 mutex_unlock(&ctx->lock);
499
500 return rc;
501}
502
503static int vidi_store_connection(struct device *dev,
504 struct device_attribute *attr,
505 const char *buf, size_t len)
506{
507 struct vidi_context *ctx = get_vidi_context(dev);
508 int ret;
509
510 DRM_DEBUG_KMS("%s\n", __FILE__);
511
512 ret = kstrtoint(buf, 0, &ctx->connected);
513 if (ret)
514 return ret;
515
516 if (ctx->connected > 1)
517 return -EINVAL;
518
d07d39df
ID		 519 /* use fake edid data for test. */
520 if (!ctx->raw_edid)
521 ctx->raw_edid = (struct edid *)fake_edid_info;
522
d7b8478a
ID		 523 /* if raw_edid isn't same as fake data then it can't be tested. */
524 if (ctx->raw_edid != (struct edid *)fake_edid_info) {
525 DRM_DEBUG_KMS("edid data is not fake data.\n");
526 return -EINVAL;
527 }
528
b73d1230
ID		 529 DRM_DEBUG_KMS("requested connection.\n");
530
531 drm_helper_hpd_irq_event(ctx->subdrv.drm_dev);
532
533 return len;
534}
535
536static DEVICE_ATTR(connection, 0644, vidi_show_connection,
537 vidi_store_connection);
538
539int vidi_connection_ioctl(struct drm_device *drm_dev, void *data,
540 struct drm_file *file_priv)
541{
542 struct vidi_context *ctx = NULL;
543 struct drm_encoder *encoder;
544 struct exynos_drm_manager *manager;
545 struct exynos_drm_display_ops *display_ops;
546 struct drm_exynos_vidi_connection *vidi = data;
d3b62dbf
ID		 547 struct edid *raw_edid;
548 int edid_len;
b73d1230
ID		 549
550 DRM_DEBUG_KMS("%s\n", __FILE__);
551
552 if (!vidi) {
553 DRM_DEBUG_KMS("user data for vidi is null.\n");
554 return -EINVAL;
555 }
556
b73d1230
ID		 557 if (vidi->connection > 1) {
558 DRM_DEBUG_KMS("connection should be 0 or 1.\n");
559 return -EINVAL;
560 }
561
562 list_for_each_entry(encoder, &drm_dev->mode_config.encoder_list,
563 head) {
564 manager = exynos_drm_get_manager(encoder);
565 display_ops = manager->display_ops;
566
567 if (display_ops->type == EXYNOS_DISPLAY_TYPE_VIDI) {
568 ctx = get_vidi_context(manager->dev);
569 break;
570 }
571 }
572
573 if (!ctx) {
574 DRM_DEBUG_KMS("not found virtual device type encoder.\n");
575 return -EINVAL;
576 }
577
578 if (ctx->connected == vidi->connection) {
579 DRM_DEBUG_KMS("same connection request.\n");
580 return -EINVAL;
581 }
582
d3b62dbf
ID		 583 if (vidi->connection) {
584 if (!vidi->edid) {
585 DRM_DEBUG_KMS("edid data is null.\n");
586 return -EINVAL;
587 }
f91f2f33 588 raw_edid = (struct edid *)(uint32_t)vidi->edid;
d3b62dbf
ID		 589 edid_len = (1 + raw_edid->extensions) * EDID_LENGTH;
590 ctx->raw_edid = kzalloc(edid_len, GFP_KERNEL);
591 if (!ctx->raw_edid) {
592 DRM_DEBUG_KMS("failed to allocate raw_edid.\n");
593 return -ENOMEM;
594 }
595 memcpy(ctx->raw_edid, raw_edid, edid_len);
596 } else {
597 /*
598 * with connection = 0, free raw_edid
599 * only if raw edid data isn't same as fake data.
600 */
601 if (ctx->raw_edid && ctx->raw_edid !=
602 (struct edid *)fake_edid_info) {
603 kfree(ctx->raw_edid);
604 ctx->raw_edid = NULL;
605 }
606 }
b73d1230
ID		 607
608 ctx->connected = vidi->connection;
609 drm_helper_hpd_irq_event(ctx->subdrv.drm_dev);
610
611 return 0;
612}
613
614static int __devinit vidi_probe(struct platform_device *pdev)
615{
616 struct device *dev = &pdev->dev;
617 struct vidi_context *ctx;
618 struct exynos_drm_subdrv *subdrv;
619 int ret;
620
621 DRM_DEBUG_KMS("%s\n", __FILE__);
622
59848db5 623 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
b73d1230
ID		 624 if (!ctx)
625 return -ENOMEM;
626
627 ctx->default_win = 0;
628
629 INIT_WORK(&ctx->work, vidi_fake_vblank_handler);
630
b73d1230 631 subdrv = &ctx->subdrv;
677e84c1
JS		 632 subdrv->dev = dev;
633 subdrv->manager = &vidi_manager;
b73d1230
ID		 634 subdrv->probe = vidi_subdrv_probe;
635 subdrv->remove = vidi_subdrv_remove;
b73d1230
ID		 636
637 mutex_init(&ctx->lock);
638
639 platform_set_drvdata(pdev, ctx);
640
641 ret = device_create_file(&pdev->dev, &dev_attr_connection);
642 if (ret < 0)
643 DRM_INFO("failed to create connection sysfs.\n");
644
645 exynos_drm_subdrv_register(subdrv);
646
647 return 0;
648}
649
650static int __devexit vidi_remove(struct platform_device *pdev)
651{
652 struct vidi_context *ctx = platform_get_drvdata(pdev);
653
654 DRM_DEBUG_KMS("%s\n", __FILE__);
655
656 exynos_drm_subdrv_unregister(&ctx->subdrv);
657
d3b62dbf
ID		 658 if (ctx->raw_edid != (struct edid *)fake_edid_info) {
659 kfree(ctx->raw_edid);
660 ctx->raw_edid = NULL;
661 }
662
b73d1230
ID		 663 return 0;
664}
665
666#ifdef CONFIG_PM_SLEEP
667static int vidi_suspend(struct device *dev)
668{
669 struct vidi_context *ctx = get_vidi_context(dev);
670
671 return vidi_power_on(ctx, false);
672}
673
674static int vidi_resume(struct device *dev)
675{
676 struct vidi_context *ctx = get_vidi_context(dev);
677
678 return vidi_power_on(ctx, true);
679}
680#endif
681
682static const struct dev_pm_ops vidi_pm_ops = {
683 SET_SYSTEM_SLEEP_PM_OPS(vidi_suspend, vidi_resume)
684};
685
686struct platform_driver vidi_driver = {
687 .probe = vidi_probe,
688 .remove = __devexit_p(vidi_remove),
689 .driver = {
690 .name = "exynos-drm-vidi",
691 .owner = THIS_MODULE,
692 .pm = &vidi_pm_ops,
693 },
694};
Linux 6.x block layer and io_uring tree(s)