49 	struct video_device *vdev = to_video_device(cd);  in index_show()  local
51 	return sprintf(buf, "%i\n", vdev->index);  in index_show()
58 	struct video_device *vdev = to_video_device(cd);  in dev_debug_show()  local
60 	return sprintf(buf, "%i\n", vdev->dev_debug);  in dev_debug_show()
66 	struct video_device *vdev = to_video_device(cd);  in dev_debug_store()  local
74 	vdev->dev_debug = value;  in dev_debug_store()
82 	struct video_device *vdev = to_video_device(cd);  in name_show()  local
84 	return sprintf(buf, "%.*s\n", (int)sizeof(vdev->name), vdev->name);  in name_show()
129 /* Mark device node number vdev->num as used */
130 static inline void devnode_set(struct video_device *vdev)  in devnode_set()  argument
132 	set_bit(vdev->num, devnode_bits(vdev->vfl_type));  in devnode_set()
135 /* Mark device node number vdev->num as unused */
136 static inline void devnode_clear(struct video_device *vdev)  in devnode_clear()  argument
138 	clear_bit(vdev->num, devnode_bits(vdev->vfl_type));  in devnode_clear()
142 static inline int devnode_find(struct video_device *vdev, int from, int to)  in devnode_find()  argument
144 	return find_next_zero_bit(devnode_bits(vdev->vfl_type), to, from);  in devnode_find()
153 void video_device_release(struct video_device *vdev)  in video_device_release()  argument
155 	kfree(vdev);  in video_device_release()
159 void video_device_release_empty(struct video_device *vdev)  in video_device_release_empty()  argument
166 static inline void video_get(struct video_device *vdev)  in video_get()  argument
168 	get_device(&vdev->dev);  in video_get()
171 static inline void video_put(struct video_device *vdev)  in video_put()  argument
173 	put_device(&vdev->dev);  in video_put()
179 	struct video_device *vdev = to_video_device(cd);  in v4l2_device_release()  local
180 	struct v4l2_device *v4l2_dev = vdev->v4l2_dev;  in v4l2_device_release()
183 	if (WARN_ON(video_devices[vdev->minor] != vdev)) {  in v4l2_device_release()
190 	video_devices[vdev->minor] = NULL;  in v4l2_device_release()
193 	cdev_del(vdev->cdev);  in v4l2_device_release()
196 	vdev->cdev = NULL;  in v4l2_device_release()
199 	devnode_clear(vdev);  in v4l2_device_release()
204 	if (v4l2_dev->mdev && vdev->vfl_dir != VFL_DIR_M2M) {  in v4l2_device_release()
206 		media_devnode_remove(vdev->intf_devnode);  in v4l2_device_release()
207 		if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN)  in v4l2_device_release()
208 			media_device_unregister_entity(&vdev->entity);  in v4l2_device_release()
225 	vdev->release(vdev);  in v4l2_device_release()
310 	struct video_device *vdev = video_devdata(filp);  in v4l2_read()  local
313 	if (!vdev->fops->read)  in v4l2_read()
315 	if (video_is_registered(vdev))  in v4l2_read()
316 		ret = vdev->fops->read(filp, buf, sz, off);  in v4l2_read()
317 	if ((vdev->dev_debug & V4L2_DEV_DEBUG_FOP) &&  in v4l2_read()
318 	    (vdev->dev_debug & V4L2_DEV_DEBUG_STREAMING))  in v4l2_read()
320 			video_device_node_name(vdev), sz, ret);  in v4l2_read()
327 	struct video_device *vdev = video_devdata(filp);  in v4l2_write()  local
330 	if (!vdev->fops->write)  in v4l2_write()
332 	if (video_is_registered(vdev))  in v4l2_write()
333 		ret = vdev->fops->write(filp, buf, sz, off);  in v4l2_write()
334 	if ((vdev->dev_debug & V4L2_DEV_DEBUG_FOP) &&  in v4l2_write()
335 	    (vdev->dev_debug & V4L2_DEV_DEBUG_STREAMING))  in v4l2_write()
337 			video_device_node_name(vdev), sz, ret);  in v4l2_write()
343 	struct video_device *vdev = video_devdata(filp);  in v4l2_poll()  local
346 	if (video_is_registered(vdev)) {  in v4l2_poll()
347 		if (!vdev->fops->poll)  in v4l2_poll()
350 			res = vdev->fops->poll(filp, poll);  in v4l2_poll()
352 	if (vdev->dev_debug & V4L2_DEV_DEBUG_POLL)  in v4l2_poll()
354 			video_device_node_name(vdev), res,  in v4l2_poll()
361 	struct video_device *vdev = video_devdata(filp);  in v4l2_ioctl()  local
364 	if (vdev->fops->unlocked_ioctl) {  in v4l2_ioctl()
365 		if (video_is_registered(vdev))  in v4l2_ioctl()
366 			ret = vdev->fops->unlocked_ioctl(filp, cmd, arg);  in v4l2_ioctl()
380 	struct video_device *vdev = video_devdata(filp);  in v4l2_get_unmapped_area()  local
383 	if (!vdev->fops->get_unmapped_area)  in v4l2_get_unmapped_area()
385 	if (!video_is_registered(vdev))  in v4l2_get_unmapped_area()
387 	ret = vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags);  in v4l2_get_unmapped_area()
388 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_get_unmapped_area()
390 			video_device_node_name(vdev), ret);  in v4l2_get_unmapped_area()
397 	struct video_device *vdev = video_devdata(filp);  in v4l2_mmap()  local
400 	if (!vdev->fops->mmap)  in v4l2_mmap()
402 	if (video_is_registered(vdev))  in v4l2_mmap()
403 		ret = vdev->fops->mmap(filp, vm);  in v4l2_mmap()
404 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_mmap()
406 			video_device_node_name(vdev), ret);  in v4l2_mmap()
413 	struct video_device *vdev;  in v4l2_open()  local
418 	vdev = video_devdata(filp);  in v4l2_open()
420 	if (vdev == NULL || !video_is_registered(vdev)) {  in v4l2_open()
425 	video_get(vdev);  in v4l2_open()
427 	if (vdev->fops->open) {  in v4l2_open()
428 		if (video_is_registered(vdev))  in v4l2_open()
429 			ret = vdev->fops->open(filp);  in v4l2_open()
434 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_open()
436 			video_device_node_name(vdev), ret);  in v4l2_open()
439 		video_put(vdev);  in v4l2_open()
446 	struct video_device *vdev = video_devdata(filp);  in v4l2_release()  local
455 	if (vdev->fops->release) {  in v4l2_release()
456 		if (v4l2_device_supports_requests(vdev->v4l2_dev)) {  in v4l2_release()
457 			mutex_lock(&vdev->v4l2_dev->mdev->req_queue_mutex);  in v4l2_release()
458 			ret = vdev->fops->release(filp);  in v4l2_release()
459 			mutex_unlock(&vdev->v4l2_dev->mdev->req_queue_mutex);  in v4l2_release()
461 			ret = vdev->fops->release(filp);  in v4l2_release()
465 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_release()
467 			video_device_node_name(vdev));  in v4l2_release()
471 	video_put(vdev);  in v4l2_release()
492  * @vdev: video_device to assign index number to, vdev->v4l2_dev should be assigned
503 static int get_index(struct video_device *vdev)  in get_index()  argument
514 		    video_devices[i]->v4l2_dev == vdev->v4l2_dev) {  in get_index()
530    vdev->valid_ioctls. If an ioctl is marked as 1 when this function is
536    vdev->valid_ioctls = valid_ioctls & ~(vdev->valid_ioctls)
538 static void determine_valid_ioctls(struct video_device *vdev)  in determine_valid_ioctls()  argument
548 	const struct v4l2_ioctl_ops *ops = vdev->ioctl_ops;  in determine_valid_ioctls()
549 	bool is_vid = vdev->vfl_type == VFL_TYPE_VIDEO &&  in determine_valid_ioctls()
550 		      (vdev->device_caps & vid_caps);  in determine_valid_ioctls()
551 	bool is_vbi = vdev->vfl_type == VFL_TYPE_VBI;  in determine_valid_ioctls()
552 	bool is_radio = vdev->vfl_type == VFL_TYPE_RADIO;  in determine_valid_ioctls()
553 	bool is_sdr = vdev->vfl_type == VFL_TYPE_SDR;  in determine_valid_ioctls()
554 	bool is_tch = vdev->vfl_type == VFL_TYPE_TOUCH;  in determine_valid_ioctls()
555 	bool is_meta = vdev->vfl_type == VFL_TYPE_VIDEO &&  in determine_valid_ioctls()
556 		       (vdev->device_caps & meta_caps);  in determine_valid_ioctls()
557 	bool is_rx = vdev->vfl_dir != VFL_DIR_TX;  in determine_valid_ioctls()
558 	bool is_tx = vdev->vfl_dir != VFL_DIR_RX;  in determine_valid_ioctls()
559 	bool is_io_mc = vdev->device_caps & V4L2_CAP_IO_MC;  in determine_valid_ioctls()
560 	bool has_streaming = vdev->device_caps & V4L2_CAP_STREAMING;  in determine_valid_ioctls()
561 	bool is_edid =  vdev->device_caps & V4L2_CAP_EDID;  in determine_valid_ioctls()
575 	if (vdev->ctrl_handler || ops->vidioc_queryctrl)  in determine_valid_ioctls()
577 	if (vdev->ctrl_handler || ops->vidioc_query_ext_ctrl)  in determine_valid_ioctls()
579 	if (vdev->ctrl_handler || ops->vidioc_g_ctrl || ops->vidioc_g_ext_ctrls)  in determine_valid_ioctls()
581 	if (vdev->ctrl_handler || ops->vidioc_s_ctrl || ops->vidioc_s_ext_ctrls)  in determine_valid_ioctls()
583 	if (vdev->ctrl_handler || ops->vidioc_g_ext_ctrls)  in determine_valid_ioctls()
585 	if (vdev->ctrl_handler || ops->vidioc_s_ext_ctrls)  in determine_valid_ioctls()
587 	if (vdev->ctrl_handler || ops->vidioc_try_ext_ctrls)  in determine_valid_ioctls()
589 	if (vdev->ctrl_handler || ops->vidioc_querymenu)  in determine_valid_ioctls()
648 		    !test_bit(_IOC_NR(VIDIOC_G_SELECTION), vdev->valid_ioctls)) {  in determine_valid_ioctls()
653 		    !test_bit(_IOC_NR(VIDIOC_S_SELECTION), vdev->valid_ioctls))  in determine_valid_ioctls()
804 	bitmap_andnot(vdev->valid_ioctls, valid_ioctls, vdev->valid_ioctls,  in determine_valid_ioctls()
808 static int video_register_media_controller(struct video_device *vdev)  in video_register_media_controller()  argument
817 	if (!vdev->v4l2_dev->mdev || vdev->vfl_dir == VFL_DIR_M2M)  in video_register_media_controller()
820 	vdev->entity.obj_type = MEDIA_ENTITY_TYPE_VIDEO_DEVICE;  in video_register_media_controller()
821 	vdev->entity.function = MEDIA_ENT_F_UNKNOWN;  in video_register_media_controller()
823 	switch (vdev->vfl_type) {  in video_register_media_controller()
826 		vdev->entity.function = MEDIA_ENT_F_IO_V4L;  in video_register_media_controller()
830 		vdev->entity.function = MEDIA_ENT_F_IO_VBI;  in video_register_media_controller()
834 		vdev->entity.function = MEDIA_ENT_F_IO_SWRADIO;  in video_register_media_controller()
838 		vdev->entity.function = MEDIA_ENT_F_IO_V4L;  in video_register_media_controller()
856 	if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) {  in video_register_media_controller()
857 		vdev->entity.name = vdev->name;  in video_register_media_controller()
860 		vdev->entity.info.dev.major = VIDEO_MAJOR;  in video_register_media_controller()
861 		vdev->entity.info.dev.minor = vdev->minor;  in video_register_media_controller()
863 		ret = media_device_register_entity(vdev->v4l2_dev->mdev,  in video_register_media_controller()
864 						   &vdev->entity);  in video_register_media_controller()
872 	vdev->intf_devnode = media_devnode_create(vdev->v4l2_dev->mdev,  in video_register_media_controller()
875 						  vdev->minor);  in video_register_media_controller()
876 	if (!vdev->intf_devnode) {  in video_register_media_controller()
877 		media_device_unregister_entity(&vdev->entity);  in video_register_media_controller()
881 	if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) {  in video_register_media_controller()
884 		link = media_create_intf_link(&vdev->entity,  in video_register_media_controller()
885 					      &vdev->intf_devnode->intf,  in video_register_media_controller()
889 			media_devnode_remove(vdev->intf_devnode);  in video_register_media_controller()
890 			media_device_unregister_entity(&vdev->entity);  in video_register_media_controller()
901 int __video_register_device(struct video_device *vdev,  in __video_register_device()  argument
914 	vdev->minor = -1;  in __video_register_device()
917 	if (WARN_ON(!vdev->release))  in __video_register_device()
920 	if (WARN_ON(!vdev->v4l2_dev))  in __video_register_device()
923 	if (WARN_ON(type != VFL_TYPE_SUBDEV && !vdev->device_caps))  in __video_register_device()
927 	spin_lock_init(&vdev->fh_lock);  in __video_register_device()
928 	INIT_LIST_HEAD(&vdev->fh_list);  in __video_register_device()
957 	vdev->vfl_type = type;  in __video_register_device()
958 	vdev->cdev = NULL;  in __video_register_device()
959 	if (vdev->dev_parent == NULL)  in __video_register_device()
960 		vdev->dev_parent = vdev->v4l2_dev->dev;  in __video_register_device()
961 	if (vdev->ctrl_handler == NULL)  in __video_register_device()
962 		vdev->ctrl_handler = vdev->v4l2_dev->ctrl_handler;  in __video_register_device()
965 	if (vdev->prio == NULL)  in __video_register_device()
966 		vdev->prio = &vdev->v4l2_dev->prio;  in __video_register_device()
997 	nr = devnode_find(vdev, nr == -1 ? 0 : nr, minor_cnt);  in __video_register_device()
999 		nr = devnode_find(vdev, 0, minor_cnt);  in __video_register_device()
1020 	vdev->minor = i + minor_offset;  in __video_register_device()
1021 	vdev->num = nr;  in __video_register_device()
1024 	if (WARN_ON(video_devices[vdev->minor])) {  in __video_register_device()
1029 	devnode_set(vdev);  in __video_register_device()
1030 	vdev->index = get_index(vdev);  in __video_register_device()
1031 	video_devices[vdev->minor] = vdev;  in __video_register_device()
1034 	if (vdev->ioctl_ops)  in __video_register_device()
1035 		determine_valid_ioctls(vdev);  in __video_register_device()
1038 	vdev->cdev = cdev_alloc();  in __video_register_device()
1039 	if (vdev->cdev == NULL) {  in __video_register_device()
1043 	vdev->cdev->ops = &v4l2_fops;  in __video_register_device()
1044 	vdev->cdev->owner = owner;  in __video_register_device()
1045 	ret = cdev_add(vdev->cdev, MKDEV(VIDEO_MAJOR, vdev->minor), 1);  in __video_register_device()
1048 		kfree(vdev->cdev);  in __video_register_device()
1049 		vdev->cdev = NULL;  in __video_register_device()
1054 	vdev->dev.class = &video_class;  in __video_register_device()
1055 	vdev->dev.devt = MKDEV(VIDEO_MAJOR, vdev->minor);  in __video_register_device()
1056 	vdev->dev.parent = vdev->dev_parent;  in __video_register_device()
1057 	dev_set_name(&vdev->dev, "%s%d", name_base, vdev->num);  in __video_register_device()
1059 	ret = device_register(&vdev->dev);  in __video_register_device()
1067 	vdev->dev.release = v4l2_device_release;  in __video_register_device()
1069 	if (nr != -1 && nr != vdev->num && warn_if_nr_in_use)  in __video_register_device()
1071 			name_base, nr, video_device_node_name(vdev));  in __video_register_device()
1074 	v4l2_device_get(vdev->v4l2_dev);  in __video_register_device()
1077 	ret = video_register_media_controller(vdev);  in __video_register_device()
1080 	set_bit(V4L2_FL_REGISTERED, &vdev->flags);  in __video_register_device()
1087 	if (vdev->cdev)  in __video_register_device()
1088 		cdev_del(vdev->cdev);  in __video_register_device()
1089 	video_devices[vdev->minor] = NULL;  in __video_register_device()
1090 	devnode_clear(vdev);  in __video_register_device()
1093 	vdev->minor = -1;  in __video_register_device()
1100  *	@vdev: the device to unregister
1105 void video_unregister_device(struct video_device *vdev)  in video_unregister_device()  argument
1107 	/* Check if vdev was ever registered at all */  in video_unregister_device()
1108 	if (!vdev || !video_is_registered(vdev))  in video_unregister_device()
1115 	clear_bit(V4L2_FL_REGISTERED, &vdev->flags);  in video_unregister_device()
1117 	if (test_bit(V4L2_FL_USES_V4L2_FH, &vdev->flags))  in video_unregister_device()
1118 		v4l2_event_wake_all(vdev);  in video_unregister_device()
1119 	device_unregister(&vdev->dev);  in video_unregister_device()
1135 __must_check int video_device_pipeline_start(struct video_device *vdev,  in video_device_pipeline_start()  argument
1138 	struct media_entity *entity = &vdev->entity;  in video_device_pipeline_start()
1147 __must_check int __video_device_pipeline_start(struct video_device *vdev,  in __video_device_pipeline_start()  argument
1150 	struct media_entity *entity = &vdev->entity;  in __video_device_pipeline_start()
1159 void video_device_pipeline_stop(struct video_device *vdev)  in video_device_pipeline_stop()  argument
1161 	struct media_entity *entity = &vdev->entity;  in video_device_pipeline_stop()
1170 void __video_device_pipeline_stop(struct video_device *vdev)  in __video_device_pipeline_stop()  argument
1172 	struct media_entity *entity = &vdev->entity;  in __video_device_pipeline_stop()
1181 __must_check int video_device_pipeline_alloc_start(struct video_device *vdev)  in video_device_pipeline_alloc_start()  argument
1183 	struct media_entity *entity = &vdev->entity;  in video_device_pipeline_alloc_start()
1192 struct media_pipeline *video_device_pipeline(struct video_device *vdev)  in video_device_pipeline()  argument
1194 	struct media_entity *entity = &vdev->entity;  in video_device_pipeline()