1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2010 Nokia Corporation
7 * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
8 * Sakari Ailus <sakari.ailus@iki.fi>
11 #include <linux/ioctl.h>
13 #include <linux/module.h>
14 #include <linux/slab.h>
15 #include <linux/types.h>
16 #include <linux/videodev2.h>
17 #include <linux/export.h>
19 #include <media/v4l2-ctrls.h>
20 #include <media/v4l2-device.h>
21 #include <media/v4l2-ioctl.h>
22 #include <media/v4l2-fh.h>
23 #include <media/v4l2-event.h>
25 static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd)
27 #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
28 if (sd->entity.num_pads) {
29 fh->pad = v4l2_subdev_alloc_pad_config(sd);
37 static void subdev_fh_free(struct v4l2_subdev_fh *fh)
39 #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
40 v4l2_subdev_free_pad_config(fh->pad);
45 static int subdev_open(struct file *file)
47 struct video_device *vdev = video_devdata(file);
48 struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
49 struct v4l2_subdev_fh *subdev_fh;
52 subdev_fh = kzalloc(sizeof(*subdev_fh), GFP_KERNEL);
53 if (subdev_fh == NULL)
56 ret = subdev_fh_init(subdev_fh, sd);
62 v4l2_fh_init(&subdev_fh->vfh, vdev);
63 v4l2_fh_add(&subdev_fh->vfh);
64 file->private_data = &subdev_fh->vfh;
65 #if defined(CONFIG_MEDIA_CONTROLLER)
66 if (sd->v4l2_dev->mdev && sd->entity.graph_obj.mdev->dev) {
69 owner = sd->entity.graph_obj.mdev->dev->driver->owner;
70 if (!try_module_get(owner)) {
74 subdev_fh->owner = owner;
78 if (sd->internal_ops && sd->internal_ops->open) {
79 ret = sd->internal_ops->open(sd, subdev_fh);
87 module_put(subdev_fh->owner);
88 v4l2_fh_del(&subdev_fh->vfh);
89 v4l2_fh_exit(&subdev_fh->vfh);
90 subdev_fh_free(subdev_fh);
96 static int subdev_close(struct file *file)
98 struct video_device *vdev = video_devdata(file);
99 struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
100 struct v4l2_fh *vfh = file->private_data;
101 struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh);
103 if (sd->internal_ops && sd->internal_ops->close)
104 sd->internal_ops->close(sd, subdev_fh);
105 module_put(subdev_fh->owner);
108 subdev_fh_free(subdev_fh);
110 file->private_data = NULL;
115 static inline int check_which(__u32 which)
117 if (which != V4L2_SUBDEV_FORMAT_TRY &&
118 which != V4L2_SUBDEV_FORMAT_ACTIVE)
124 static inline int check_pad(struct v4l2_subdev *sd, __u32 pad)
126 #if defined(CONFIG_MEDIA_CONTROLLER)
127 if (sd->entity.num_pads) {
128 if (pad >= sd->entity.num_pads)
133 /* allow pad 0 on subdevices not registered as media entities */
139 static int check_cfg(__u32 which, struct v4l2_subdev_pad_config *cfg)
141 if (which == V4L2_SUBDEV_FORMAT_TRY && !cfg)
147 static inline int check_format(struct v4l2_subdev *sd,
148 struct v4l2_subdev_pad_config *cfg,
149 struct v4l2_subdev_format *format)
154 return check_which(format->which) ? : check_pad(sd, format->pad) ? :
155 check_cfg(format->which, cfg);
158 static int call_get_fmt(struct v4l2_subdev *sd,
159 struct v4l2_subdev_pad_config *cfg,
160 struct v4l2_subdev_format *format)
162 return check_format(sd, cfg, format) ? :
163 sd->ops->pad->get_fmt(sd, cfg, format);
166 static int call_set_fmt(struct v4l2_subdev *sd,
167 struct v4l2_subdev_pad_config *cfg,
168 struct v4l2_subdev_format *format)
170 return check_format(sd, cfg, format) ? :
171 sd->ops->pad->set_fmt(sd, cfg, format);
174 static int call_enum_mbus_code(struct v4l2_subdev *sd,
175 struct v4l2_subdev_pad_config *cfg,
176 struct v4l2_subdev_mbus_code_enum *code)
181 return check_which(code->which) ? : check_pad(sd, code->pad) ? :
182 check_cfg(code->which, cfg) ? :
183 sd->ops->pad->enum_mbus_code(sd, cfg, code);
186 static int call_enum_frame_size(struct v4l2_subdev *sd,
187 struct v4l2_subdev_pad_config *cfg,
188 struct v4l2_subdev_frame_size_enum *fse)
193 return check_which(fse->which) ? : check_pad(sd, fse->pad) ? :
194 check_cfg(fse->which, cfg) ? :
195 sd->ops->pad->enum_frame_size(sd, cfg, fse);
198 static inline int check_frame_interval(struct v4l2_subdev *sd,
199 struct v4l2_subdev_frame_interval *fi)
204 return check_pad(sd, fi->pad);
207 static int call_g_frame_interval(struct v4l2_subdev *sd,
208 struct v4l2_subdev_frame_interval *fi)
210 return check_frame_interval(sd, fi) ? :
211 sd->ops->video->g_frame_interval(sd, fi);
214 static int call_s_frame_interval(struct v4l2_subdev *sd,
215 struct v4l2_subdev_frame_interval *fi)
217 return check_frame_interval(sd, fi) ? :
218 sd->ops->video->s_frame_interval(sd, fi);
221 static int call_enum_frame_interval(struct v4l2_subdev *sd,
222 struct v4l2_subdev_pad_config *cfg,
223 struct v4l2_subdev_frame_interval_enum *fie)
228 return check_which(fie->which) ? : check_pad(sd, fie->pad) ? :
229 check_cfg(fie->which, cfg) ? :
230 sd->ops->pad->enum_frame_interval(sd, cfg, fie);
233 static inline int check_selection(struct v4l2_subdev *sd,
234 struct v4l2_subdev_pad_config *cfg,
235 struct v4l2_subdev_selection *sel)
240 return check_which(sel->which) ? : check_pad(sd, sel->pad) ? :
241 check_cfg(sel->which, cfg);
244 static int call_get_selection(struct v4l2_subdev *sd,
245 struct v4l2_subdev_pad_config *cfg,
246 struct v4l2_subdev_selection *sel)
248 return check_selection(sd, cfg, sel) ? :
249 sd->ops->pad->get_selection(sd, cfg, sel);
252 static int call_set_selection(struct v4l2_subdev *sd,
253 struct v4l2_subdev_pad_config *cfg,
254 struct v4l2_subdev_selection *sel)
256 return check_selection(sd, cfg, sel) ? :
257 sd->ops->pad->set_selection(sd, cfg, sel);
260 static inline int check_edid(struct v4l2_subdev *sd,
261 struct v4l2_subdev_edid *edid)
266 if (edid->blocks && edid->edid == NULL)
269 return check_pad(sd, edid->pad);
272 static int call_get_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid)
274 return check_edid(sd, edid) ? : sd->ops->pad->get_edid(sd, edid);
277 static int call_set_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid)
279 return check_edid(sd, edid) ? : sd->ops->pad->set_edid(sd, edid);
282 static int call_dv_timings_cap(struct v4l2_subdev *sd,
283 struct v4l2_dv_timings_cap *cap)
288 return check_pad(sd, cap->pad) ? :
289 sd->ops->pad->dv_timings_cap(sd, cap);
292 static int call_enum_dv_timings(struct v4l2_subdev *sd,
293 struct v4l2_enum_dv_timings *dvt)
298 return check_pad(sd, dvt->pad) ? :
299 sd->ops->pad->enum_dv_timings(sd, dvt);
302 static const struct v4l2_subdev_pad_ops v4l2_subdev_call_pad_wrappers = {
303 .get_fmt = call_get_fmt,
304 .set_fmt = call_set_fmt,
305 .enum_mbus_code = call_enum_mbus_code,
306 .enum_frame_size = call_enum_frame_size,
307 .enum_frame_interval = call_enum_frame_interval,
308 .get_selection = call_get_selection,
309 .set_selection = call_set_selection,
310 .get_edid = call_get_edid,
311 .set_edid = call_set_edid,
312 .dv_timings_cap = call_dv_timings_cap,
313 .enum_dv_timings = call_enum_dv_timings,
316 static const struct v4l2_subdev_video_ops v4l2_subdev_call_video_wrappers = {
317 .g_frame_interval = call_g_frame_interval,
318 .s_frame_interval = call_s_frame_interval,
321 const struct v4l2_subdev_ops v4l2_subdev_call_wrappers = {
322 .pad = &v4l2_subdev_call_pad_wrappers,
323 .video = &v4l2_subdev_call_video_wrappers,
325 EXPORT_SYMBOL(v4l2_subdev_call_wrappers);
327 static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
329 struct video_device *vdev = video_devdata(file);
330 struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
331 struct v4l2_fh *vfh = file->private_data;
332 #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
333 struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh);
338 case VIDIOC_QUERYCTRL:
340 * TODO: this really should be folded into v4l2_queryctrl (this
341 * currently returns -EINVAL for NULL control handlers).
342 * However, v4l2_queryctrl() is still called directly by
343 * drivers as well and until that has been addressed I believe
344 * it is safer to do the check here. The same is true for the
345 * other control ioctls below.
347 if (!vfh->ctrl_handler)
349 return v4l2_queryctrl(vfh->ctrl_handler, arg);
351 case VIDIOC_QUERY_EXT_CTRL:
352 if (!vfh->ctrl_handler)
354 return v4l2_query_ext_ctrl(vfh->ctrl_handler, arg);
356 case VIDIOC_QUERYMENU:
357 if (!vfh->ctrl_handler)
359 return v4l2_querymenu(vfh->ctrl_handler, arg);
362 if (!vfh->ctrl_handler)
364 return v4l2_g_ctrl(vfh->ctrl_handler, arg);
367 if (!vfh->ctrl_handler)
369 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, arg);
371 case VIDIOC_G_EXT_CTRLS:
372 if (!vfh->ctrl_handler)
374 return v4l2_g_ext_ctrls(vfh->ctrl_handler,
375 sd->v4l2_dev->mdev, arg);
377 case VIDIOC_S_EXT_CTRLS:
378 if (!vfh->ctrl_handler)
380 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler,
381 sd->v4l2_dev->mdev, arg);
383 case VIDIOC_TRY_EXT_CTRLS:
384 if (!vfh->ctrl_handler)
386 return v4l2_try_ext_ctrls(vfh->ctrl_handler,
387 sd->v4l2_dev->mdev, arg);
390 if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS))
393 return v4l2_event_dequeue(vfh, arg, file->f_flags & O_NONBLOCK);
395 case VIDIOC_SUBSCRIBE_EVENT:
396 return v4l2_subdev_call(sd, core, subscribe_event, vfh, arg);
398 case VIDIOC_UNSUBSCRIBE_EVENT:
399 return v4l2_subdev_call(sd, core, unsubscribe_event, vfh, arg);
401 #ifdef CONFIG_VIDEO_ADV_DEBUG
402 case VIDIOC_DBG_G_REGISTER:
404 struct v4l2_dbg_register *p = arg;
406 if (!capable(CAP_SYS_ADMIN))
408 return v4l2_subdev_call(sd, core, g_register, p);
410 case VIDIOC_DBG_S_REGISTER:
412 struct v4l2_dbg_register *p = arg;
414 if (!capable(CAP_SYS_ADMIN))
416 return v4l2_subdev_call(sd, core, s_register, p);
418 case VIDIOC_DBG_G_CHIP_INFO:
420 struct v4l2_dbg_chip_info *p = arg;
422 if (p->match.type != V4L2_CHIP_MATCH_SUBDEV || p->match.addr)
424 if (sd->ops->core && sd->ops->core->s_register)
425 p->flags |= V4L2_CHIP_FL_WRITABLE;
426 if (sd->ops->core && sd->ops->core->g_register)
427 p->flags |= V4L2_CHIP_FL_READABLE;
428 strscpy(p->name, sd->name, sizeof(p->name));
433 case VIDIOC_LOG_STATUS: {
436 pr_info("%s: ================= START STATUS =================\n",
438 ret = v4l2_subdev_call(sd, core, log_status);
439 pr_info("%s: ================== END STATUS ==================\n",
444 #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
445 case VIDIOC_SUBDEV_G_FMT: {
446 struct v4l2_subdev_format *format = arg;
448 memset(format->reserved, 0, sizeof(format->reserved));
449 memset(format->format.reserved, 0, sizeof(format->format.reserved));
450 return v4l2_subdev_call(sd, pad, get_fmt, subdev_fh->pad, format);
453 case VIDIOC_SUBDEV_S_FMT: {
454 struct v4l2_subdev_format *format = arg;
456 memset(format->reserved, 0, sizeof(format->reserved));
457 memset(format->format.reserved, 0, sizeof(format->format.reserved));
458 return v4l2_subdev_call(sd, pad, set_fmt, subdev_fh->pad, format);
461 case VIDIOC_SUBDEV_G_CROP: {
462 struct v4l2_subdev_crop *crop = arg;
463 struct v4l2_subdev_selection sel;
465 memset(crop->reserved, 0, sizeof(crop->reserved));
466 memset(&sel, 0, sizeof(sel));
467 sel.which = crop->which;
469 sel.target = V4L2_SEL_TGT_CROP;
471 rval = v4l2_subdev_call(
472 sd, pad, get_selection, subdev_fh->pad, &sel);
479 case VIDIOC_SUBDEV_S_CROP: {
480 struct v4l2_subdev_crop *crop = arg;
481 struct v4l2_subdev_selection sel;
483 memset(crop->reserved, 0, sizeof(crop->reserved));
484 memset(&sel, 0, sizeof(sel));
485 sel.which = crop->which;
487 sel.target = V4L2_SEL_TGT_CROP;
490 rval = v4l2_subdev_call(
491 sd, pad, set_selection, subdev_fh->pad, &sel);
498 case VIDIOC_SUBDEV_ENUM_MBUS_CODE: {
499 struct v4l2_subdev_mbus_code_enum *code = arg;
501 memset(code->reserved, 0, sizeof(code->reserved));
502 return v4l2_subdev_call(sd, pad, enum_mbus_code, subdev_fh->pad,
506 case VIDIOC_SUBDEV_ENUM_FRAME_SIZE: {
507 struct v4l2_subdev_frame_size_enum *fse = arg;
509 memset(fse->reserved, 0, sizeof(fse->reserved));
510 return v4l2_subdev_call(sd, pad, enum_frame_size, subdev_fh->pad,
514 case VIDIOC_SUBDEV_G_FRAME_INTERVAL: {
515 struct v4l2_subdev_frame_interval *fi = arg;
517 memset(fi->reserved, 0, sizeof(fi->reserved));
518 return v4l2_subdev_call(sd, video, g_frame_interval, arg);
521 case VIDIOC_SUBDEV_S_FRAME_INTERVAL: {
522 struct v4l2_subdev_frame_interval *fi = arg;
524 memset(fi->reserved, 0, sizeof(fi->reserved));
525 return v4l2_subdev_call(sd, video, s_frame_interval, arg);
528 case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: {
529 struct v4l2_subdev_frame_interval_enum *fie = arg;
531 memset(fie->reserved, 0, sizeof(fie->reserved));
532 return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh->pad,
536 case VIDIOC_SUBDEV_G_SELECTION: {
537 struct v4l2_subdev_selection *sel = arg;
539 memset(sel->reserved, 0, sizeof(sel->reserved));
540 return v4l2_subdev_call(
541 sd, pad, get_selection, subdev_fh->pad, sel);
544 case VIDIOC_SUBDEV_S_SELECTION: {
545 struct v4l2_subdev_selection *sel = arg;
547 memset(sel->reserved, 0, sizeof(sel->reserved));
548 return v4l2_subdev_call(
549 sd, pad, set_selection, subdev_fh->pad, sel);
552 case VIDIOC_G_EDID: {
553 struct v4l2_subdev_edid *edid = arg;
555 return v4l2_subdev_call(sd, pad, get_edid, edid);
558 case VIDIOC_S_EDID: {
559 struct v4l2_subdev_edid *edid = arg;
561 return v4l2_subdev_call(sd, pad, set_edid, edid);
564 case VIDIOC_SUBDEV_DV_TIMINGS_CAP: {
565 struct v4l2_dv_timings_cap *cap = arg;
567 return v4l2_subdev_call(sd, pad, dv_timings_cap, cap);
570 case VIDIOC_SUBDEV_ENUM_DV_TIMINGS: {
571 struct v4l2_enum_dv_timings *dvt = arg;
573 return v4l2_subdev_call(sd, pad, enum_dv_timings, dvt);
576 case VIDIOC_SUBDEV_QUERY_DV_TIMINGS:
577 return v4l2_subdev_call(sd, video, query_dv_timings, arg);
579 case VIDIOC_SUBDEV_G_DV_TIMINGS:
580 return v4l2_subdev_call(sd, video, g_dv_timings, arg);
582 case VIDIOC_SUBDEV_S_DV_TIMINGS:
583 return v4l2_subdev_call(sd, video, s_dv_timings, arg);
585 case VIDIOC_SUBDEV_G_STD:
586 return v4l2_subdev_call(sd, video, g_std, arg);
588 case VIDIOC_SUBDEV_S_STD: {
589 v4l2_std_id *std = arg;
591 return v4l2_subdev_call(sd, video, s_std, *std);
594 case VIDIOC_SUBDEV_ENUMSTD: {
595 struct v4l2_standard *p = arg;
598 if (v4l2_subdev_call(sd, video, g_tvnorms, &id))
601 return v4l_video_std_enumstd(p, id);
604 case VIDIOC_SUBDEV_QUERYSTD:
605 return v4l2_subdev_call(sd, video, querystd, arg);
608 return v4l2_subdev_call(sd, core, ioctl, cmd, arg);
614 static long subdev_do_ioctl_lock(struct file *file, unsigned int cmd, void *arg)
616 struct video_device *vdev = video_devdata(file);
617 struct mutex *lock = vdev->lock;
620 if (lock && mutex_lock_interruptible(lock))
622 if (video_is_registered(vdev))
623 ret = subdev_do_ioctl(file, cmd, arg);
629 static long subdev_ioctl(struct file *file, unsigned int cmd,
632 return video_usercopy(file, cmd, arg, subdev_do_ioctl_lock);
636 static long subdev_compat_ioctl32(struct file *file, unsigned int cmd,
639 struct video_device *vdev = video_devdata(file);
640 struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
642 return v4l2_subdev_call(sd, core, compat_ioctl32, cmd, arg);
646 static __poll_t subdev_poll(struct file *file, poll_table *wait)
648 struct video_device *vdev = video_devdata(file);
649 struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
650 struct v4l2_fh *fh = file->private_data;
652 if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS))
655 poll_wait(file, &fh->wait, wait);
657 if (v4l2_event_pending(fh))
663 const struct v4l2_file_operations v4l2_subdev_fops = {
664 .owner = THIS_MODULE,
666 .unlocked_ioctl = subdev_ioctl,
668 .compat_ioctl32 = subdev_compat_ioctl32,
670 .release = subdev_close,
674 #ifdef CONFIG_MEDIA_CONTROLLER
675 int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd,
676 struct media_link *link,
677 struct v4l2_subdev_format *source_fmt,
678 struct v4l2_subdev_format *sink_fmt)
680 /* The width, height and code must match. */
681 if (source_fmt->format.width != sink_fmt->format.width
682 || source_fmt->format.height != sink_fmt->format.height
683 || source_fmt->format.code != sink_fmt->format.code)
686 /* The field order must match, or the sink field order must be NONE
687 * to support interlaced hardware connected to bridges that support
688 * progressive formats only.
690 if (source_fmt->format.field != sink_fmt->format.field &&
691 sink_fmt->format.field != V4L2_FIELD_NONE)
696 EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate_default);
699 v4l2_subdev_link_validate_get_format(struct media_pad *pad,
700 struct v4l2_subdev_format *fmt)
702 if (is_media_entity_v4l2_subdev(pad->entity)) {
703 struct v4l2_subdev *sd =
704 media_entity_to_v4l2_subdev(pad->entity);
706 fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
707 fmt->pad = pad->index;
708 return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
711 WARN(pad->entity->function != MEDIA_ENT_F_IO_V4L,
712 "Driver bug! Wrong media entity type 0x%08x, entity %s\n",
713 pad->entity->function, pad->entity->name);
718 int v4l2_subdev_link_validate(struct media_link *link)
720 struct v4l2_subdev *sink;
721 struct v4l2_subdev_format sink_fmt, source_fmt;
724 rval = v4l2_subdev_link_validate_get_format(
725 link->source, &source_fmt);
729 rval = v4l2_subdev_link_validate_get_format(
730 link->sink, &sink_fmt);
734 sink = media_entity_to_v4l2_subdev(link->sink->entity);
736 rval = v4l2_subdev_call(sink, pad, link_validate, link,
737 &source_fmt, &sink_fmt);
738 if (rval != -ENOIOCTLCMD)
741 return v4l2_subdev_link_validate_default(
742 sink, link, &source_fmt, &sink_fmt);
744 EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate);
746 struct v4l2_subdev_pad_config *
747 v4l2_subdev_alloc_pad_config(struct v4l2_subdev *sd)
749 struct v4l2_subdev_pad_config *cfg;
752 if (!sd->entity.num_pads)
755 cfg = kvmalloc_array(sd->entity.num_pads, sizeof(*cfg),
756 GFP_KERNEL | __GFP_ZERO);
760 ret = v4l2_subdev_call(sd, pad, init_cfg, cfg);
761 if (ret < 0 && ret != -ENOIOCTLCMD) {
768 EXPORT_SYMBOL_GPL(v4l2_subdev_alloc_pad_config);
770 void v4l2_subdev_free_pad_config(struct v4l2_subdev_pad_config *cfg)
774 EXPORT_SYMBOL_GPL(v4l2_subdev_free_pad_config);
775 #endif /* CONFIG_MEDIA_CONTROLLER */
777 void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops)
779 INIT_LIST_HEAD(&sd->list);
787 sd->host_priv = NULL;
788 #if defined(CONFIG_MEDIA_CONTROLLER)
789 sd->entity.name = sd->name;
790 sd->entity.obj_type = MEDIA_ENTITY_TYPE_V4L2_SUBDEV;
791 sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN;
794 EXPORT_SYMBOL(v4l2_subdev_init);
796 void v4l2_subdev_notify_event(struct v4l2_subdev *sd,
797 const struct v4l2_event *ev)
799 v4l2_event_queue(sd->devnode, ev);
800 v4l2_subdev_notify(sd, V4L2_DEVICE_NOTIFY_EVENT, (void *)ev);
802 EXPORT_SYMBOL_GPL(v4l2_subdev_notify_event);