48 	struct video_device *vdev = to_video_device(cd);  in index_show()  local
50 	return sprintf(buf, "%i\n", vdev->index);  in index_show()
57 	struct video_device *vdev = to_video_device(cd);  in dev_debug_show()  local
59 	return sprintf(buf, "%i\n", vdev->dev_debug);  in dev_debug_show()
65 	struct video_device *vdev = to_video_device(cd);  in dev_debug_store()  local
73 	vdev->dev_debug = value;  in dev_debug_store()
81 	struct video_device *vdev = to_video_device(cd);  in name_show()  local
83 	return sprintf(buf, "%.*s\n", (int)sizeof(vdev->name), vdev->name);  in name_show()
127 static inline void devnode_set(struct video_device *vdev)  in devnode_set()  argument
129 	set_bit(vdev->num, devnode_bits(vdev->vfl_type));  in devnode_set()
133 static inline void devnode_clear(struct video_device *vdev)  in devnode_clear()  argument
135 	clear_bit(vdev->num, devnode_bits(vdev->vfl_type));  in devnode_clear()
139 static inline int devnode_find(struct video_device *vdev, int from, int to)  in devnode_find()  argument
141 	return find_next_zero_bit(devnode_bits(vdev->vfl_type), to, from);  in devnode_find()
150 void video_device_release(struct video_device *vdev)  in video_device_release()  argument
152 	kfree(vdev);  in video_device_release()
156 void video_device_release_empty(struct video_device *vdev)  in video_device_release_empty()  argument
163 static inline void video_get(struct video_device *vdev)  in video_get()  argument
165 	get_device(&vdev->dev);  in video_get()
168 static inline void video_put(struct video_device *vdev)  in video_put()  argument
170 	put_device(&vdev->dev);  in video_put()
176 	struct video_device *vdev = to_video_device(cd);  in v4l2_device_release()  local
177 	struct v4l2_device *v4l2_dev = vdev->v4l2_dev;  in v4l2_device_release()
180 	if (WARN_ON(video_devices[vdev->minor] != vdev)) {  in v4l2_device_release()
187 	video_devices[vdev->minor] = NULL;  in v4l2_device_release()
190 	cdev_del(vdev->cdev);  in v4l2_device_release()
193 	vdev->cdev = NULL;  in v4l2_device_release()
196 	devnode_clear(vdev);  in v4l2_device_release()
201 	if (v4l2_dev->mdev && vdev->vfl_dir != VFL_DIR_M2M) {  in v4l2_device_release()
203 		media_devnode_remove(vdev->intf_devnode);  in v4l2_device_release()
204 		if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN)  in v4l2_device_release()
205 			media_device_unregister_entity(&vdev->entity);  in v4l2_device_release()
222 	vdev->release(vdev);  in v4l2_device_release()
307 	struct video_device *vdev = video_devdata(filp);  in v4l2_read()  local
310 	if (!vdev->fops->read)  in v4l2_read()
312 	if (video_is_registered(vdev))  in v4l2_read()
313 		ret = vdev->fops->read(filp, buf, sz, off);  in v4l2_read()
314 	if ((vdev->dev_debug & V4L2_DEV_DEBUG_FOP) &&  in v4l2_read()
315 	    (vdev->dev_debug & V4L2_DEV_DEBUG_STREAMING))  in v4l2_read()
317 			video_device_node_name(vdev), sz, ret);  in v4l2_read()
324 	struct video_device *vdev = video_devdata(filp);  in v4l2_write()  local
327 	if (!vdev->fops->write)  in v4l2_write()
329 	if (video_is_registered(vdev))  in v4l2_write()
330 		ret = vdev->fops->write(filp, buf, sz, off);  in v4l2_write()
331 	if ((vdev->dev_debug & V4L2_DEV_DEBUG_FOP) &&  in v4l2_write()
332 	    (vdev->dev_debug & V4L2_DEV_DEBUG_STREAMING))  in v4l2_write()
334 			video_device_node_name(vdev), sz, ret);  in v4l2_write()
340 	struct video_device *vdev = video_devdata(filp);  in v4l2_poll()  local
343 	if (!vdev->fops->poll)  in v4l2_poll()
345 	if (video_is_registered(vdev))  in v4l2_poll()
346 		res = vdev->fops->poll(filp, poll);  in v4l2_poll()
347 	if (vdev->dev_debug & V4L2_DEV_DEBUG_POLL)  in v4l2_poll()
349 			video_device_node_name(vdev), res);  in v4l2_poll()
355 	struct video_device *vdev = video_devdata(filp);  in v4l2_ioctl()  local
358 	if (vdev->fops->unlocked_ioctl) {  in v4l2_ioctl()
359 		if (video_is_registered(vdev))  in v4l2_ioctl()
360 			ret = vdev->fops->unlocked_ioctl(filp, cmd, arg);  in v4l2_ioctl()
374 	struct video_device *vdev = video_devdata(filp);  in v4l2_get_unmapped_area()  local
377 	if (!vdev->fops->get_unmapped_area)  in v4l2_get_unmapped_area()
379 	if (!video_is_registered(vdev))  in v4l2_get_unmapped_area()
381 	ret = vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags);  in v4l2_get_unmapped_area()
382 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_get_unmapped_area()
384 			video_device_node_name(vdev), ret);  in v4l2_get_unmapped_area()
391 	struct video_device *vdev = video_devdata(filp);  in v4l2_mmap()  local
394 	if (!vdev->fops->mmap)  in v4l2_mmap()
396 	if (video_is_registered(vdev))  in v4l2_mmap()
397 		ret = vdev->fops->mmap(filp, vm);  in v4l2_mmap()
398 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_mmap()
400 			video_device_node_name(vdev), ret);  in v4l2_mmap()
407 	struct video_device *vdev;  in v4l2_open()  local
412 	vdev = video_devdata(filp);  in v4l2_open()
414 	if (vdev == NULL || !video_is_registered(vdev)) {  in v4l2_open()
419 	video_get(vdev);  in v4l2_open()
421 	if (vdev->fops->open) {  in v4l2_open()
422 		if (video_is_registered(vdev))  in v4l2_open()
423 			ret = vdev->fops->open(filp);  in v4l2_open()
428 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_open()
430 			video_device_node_name(vdev), ret);  in v4l2_open()
433 		video_put(vdev);  in v4l2_open()
440 	struct video_device *vdev = video_devdata(filp);  in v4l2_release()  local
449 	if (vdev->fops->release) {  in v4l2_release()
450 		if (v4l2_device_supports_requests(vdev->v4l2_dev)) {  in v4l2_release()
451 			mutex_lock(&vdev->v4l2_dev->mdev->req_queue_mutex);  in v4l2_release()
452 			ret = vdev->fops->release(filp);  in v4l2_release()
453 			mutex_unlock(&vdev->v4l2_dev->mdev->req_queue_mutex);  in v4l2_release()
455 			ret = vdev->fops->release(filp);  in v4l2_release()
459 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_release()
461 			video_device_node_name(vdev));  in v4l2_release()
465 	video_put(vdev);  in v4l2_release()
498 static int get_index(struct video_device *vdev)  in get_index()  argument
509 		    video_devices[i]->v4l2_dev == vdev->v4l2_dev) {  in get_index()
534 static void determine_valid_ioctls(struct video_device *vdev)  in determine_valid_ioctls()  argument
544 	const struct v4l2_ioctl_ops *ops = vdev->ioctl_ops;  in determine_valid_ioctls()
545 	bool is_vid = vdev->vfl_type == VFL_TYPE_VIDEO &&  in determine_valid_ioctls()
546 		      (vdev->device_caps & vid_caps);  in determine_valid_ioctls()
547 	bool is_vbi = vdev->vfl_type == VFL_TYPE_VBI;  in determine_valid_ioctls()
548 	bool is_radio = vdev->vfl_type == VFL_TYPE_RADIO;  in determine_valid_ioctls()
549 	bool is_sdr = vdev->vfl_type == VFL_TYPE_SDR;  in determine_valid_ioctls()
550 	bool is_tch = vdev->vfl_type == VFL_TYPE_TOUCH;  in determine_valid_ioctls()
551 	bool is_meta = vdev->vfl_type == VFL_TYPE_VIDEO &&  in determine_valid_ioctls()
552 		       (vdev->device_caps & meta_caps);  in determine_valid_ioctls()
553 	bool is_rx = vdev->vfl_dir != VFL_DIR_TX;  in determine_valid_ioctls()
554 	bool is_tx = vdev->vfl_dir != VFL_DIR_RX;  in determine_valid_ioctls()
555 	bool is_io_mc = vdev->device_caps & V4L2_CAP_IO_MC;  in determine_valid_ioctls()
569 	if (vdev->ctrl_handler || ops->vidioc_queryctrl)  in determine_valid_ioctls()
571 	if (vdev->ctrl_handler || ops->vidioc_query_ext_ctrl)  in determine_valid_ioctls()
573 	if (vdev->ctrl_handler || ops->vidioc_g_ctrl || ops->vidioc_g_ext_ctrls)  in determine_valid_ioctls()
575 	if (vdev->ctrl_handler || ops->vidioc_s_ctrl || ops->vidioc_s_ext_ctrls)  in determine_valid_ioctls()
577 	if (vdev->ctrl_handler || ops->vidioc_g_ext_ctrls)  in determine_valid_ioctls()
579 	if (vdev->ctrl_handler || ops->vidioc_s_ext_ctrls)  in determine_valid_ioctls()
581 	if (vdev->ctrl_handler || ops->vidioc_try_ext_ctrls)  in determine_valid_ioctls()
583 	if (vdev->ctrl_handler || ops->vidioc_querymenu)  in determine_valid_ioctls()
779 	bitmap_andnot(vdev->valid_ioctls, valid_ioctls, vdev->valid_ioctls,  in determine_valid_ioctls()
783 static int video_register_media_controller(struct video_device *vdev)  in video_register_media_controller()  argument
792 	if (!vdev->v4l2_dev->mdev || vdev->vfl_dir == VFL_DIR_M2M)  in video_register_media_controller()
795 	vdev->entity.obj_type = MEDIA_ENTITY_TYPE_VIDEO_DEVICE;  in video_register_media_controller()
796 	vdev->entity.function = MEDIA_ENT_F_UNKNOWN;  in video_register_media_controller()
798 	switch (vdev->vfl_type) {  in video_register_media_controller()
801 		vdev->entity.function = MEDIA_ENT_F_IO_V4L;  in video_register_media_controller()
805 		vdev->entity.function = MEDIA_ENT_F_IO_VBI;  in video_register_media_controller()
809 		vdev->entity.function = MEDIA_ENT_F_IO_SWRADIO;  in video_register_media_controller()
813 		vdev->entity.function = MEDIA_ENT_F_IO_V4L;  in video_register_media_controller()
831 	if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) {  in video_register_media_controller()
832 		vdev->entity.name = vdev->name;  in video_register_media_controller()
835 		vdev->entity.info.dev.major = VIDEO_MAJOR;  in video_register_media_controller()
836 		vdev->entity.info.dev.minor = vdev->minor;  in video_register_media_controller()
838 		ret = media_device_register_entity(vdev->v4l2_dev->mdev,  in video_register_media_controller()
839 						   &vdev->entity);  in video_register_media_controller()
847 	vdev->intf_devnode = media_devnode_create(vdev->v4l2_dev->mdev,  in video_register_media_controller()
850 						  vdev->minor);  in video_register_media_controller()
851 	if (!vdev->intf_devnode) {  in video_register_media_controller()
852 		media_device_unregister_entity(&vdev->entity);  in video_register_media_controller()
856 	if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) {  in video_register_media_controller()
859 		link = media_create_intf_link(&vdev->entity,  in video_register_media_controller()
860 					      &vdev->intf_devnode->intf,  in video_register_media_controller()
864 			media_devnode_remove(vdev->intf_devnode);  in video_register_media_controller()
865 			media_device_unregister_entity(&vdev->entity);  in video_register_media_controller()
876 int __video_register_device(struct video_device *vdev,  in __video_register_device()  argument
889 	vdev->minor = -1;  in __video_register_device()
892 	if (WARN_ON(!vdev->release))  in __video_register_device()
895 	if (WARN_ON(!vdev->v4l2_dev))  in __video_register_device()
898 	if (WARN_ON(type != VFL_TYPE_SUBDEV && !vdev->device_caps))  in __video_register_device()
902 	spin_lock_init(&vdev->fh_lock);  in __video_register_device()
903 	INIT_LIST_HEAD(&vdev->fh_list);  in __video_register_device()
932 	vdev->vfl_type = type;  in __video_register_device()
933 	vdev->cdev = NULL;  in __video_register_device()
934 	if (vdev->dev_parent == NULL)  in __video_register_device()
935 		vdev->dev_parent = vdev->v4l2_dev->dev;  in __video_register_device()
936 	if (vdev->ctrl_handler == NULL)  in __video_register_device()
937 		vdev->ctrl_handler = vdev->v4l2_dev->ctrl_handler;  in __video_register_device()
940 	if (vdev->prio == NULL)  in __video_register_device()
941 		vdev->prio = &vdev->v4l2_dev->prio;  in __video_register_device()
972 	nr = devnode_find(vdev, nr == -1 ? 0 : nr, minor_cnt);  in __video_register_device()
974 		nr = devnode_find(vdev, 0, minor_cnt);  in __video_register_device()
995 	vdev->minor = i + minor_offset;  in __video_register_device()
996 	vdev->num = nr;  in __video_register_device()
999 	if (WARN_ON(video_devices[vdev->minor])) {  in __video_register_device()
1004 	devnode_set(vdev);  in __video_register_device()
1005 	vdev->index = get_index(vdev);  in __video_register_device()
1006 	video_devices[vdev->minor] = vdev;  in __video_register_device()
1009 	if (vdev->ioctl_ops)  in __video_register_device()
1010 		determine_valid_ioctls(vdev);  in __video_register_device()
1013 	vdev->cdev = cdev_alloc();  in __video_register_device()
1014 	if (vdev->cdev == NULL) {  in __video_register_device()
1018 	vdev->cdev->ops = &v4l2_fops;  in __video_register_device()
1019 	vdev->cdev->owner = owner;  in __video_register_device()
1020 	ret = cdev_add(vdev->cdev, MKDEV(VIDEO_MAJOR, vdev->minor), 1);  in __video_register_device()
1023 		kfree(vdev->cdev);  in __video_register_device()
1024 		vdev->cdev = NULL;  in __video_register_device()
1029 	vdev->dev.class = &video_class;  in __video_register_device()
1030 	vdev->dev.devt = MKDEV(VIDEO_MAJOR, vdev->minor);  in __video_register_device()
1031 	vdev->dev.parent = vdev->dev_parent;  in __video_register_device()
1032 	dev_set_name(&vdev->dev, "%s%d", name_base, vdev->num);  in __video_register_device()
1033 	ret = device_register(&vdev->dev);  in __video_register_device()
1040 	vdev->dev.release = v4l2_device_release;  in __video_register_device()
1042 	if (nr != -1 && nr != vdev->num && warn_if_nr_in_use)  in __video_register_device()
1044 			name_base, nr, video_device_node_name(vdev));  in __video_register_device()
1047 	v4l2_device_get(vdev->v4l2_dev);  in __video_register_device()
1050 	ret = video_register_media_controller(vdev);  in __video_register_device()
1053 	set_bit(V4L2_FL_REGISTERED, &vdev->flags);  in __video_register_device()
1059 	if (vdev->cdev)  in __video_register_device()
1060 		cdev_del(vdev->cdev);  in __video_register_device()
1061 	video_devices[vdev->minor] = NULL;  in __video_register_device()
1062 	devnode_clear(vdev);  in __video_register_device()
1065 	vdev->minor = -1;  in __video_register_device()
1077 void video_unregister_device(struct video_device *vdev)  in video_unregister_device()  argument
1080 	if (!vdev || !video_is_registered(vdev))  in video_unregister_device()
1087 	clear_bit(V4L2_FL_REGISTERED, &vdev->flags);  in video_unregister_device()
1089 	device_unregister(&vdev->dev);  in video_unregister_device()