44 	struct video_device *vdev = to_video_device(cd);  in index_show()  local
46 	return sprintf(buf, "%i\n", vdev->index);  in index_show()
53 	struct video_device *vdev = to_video_device(cd);  in dev_debug_show()  local
55 	return sprintf(buf, "%i\n", vdev->dev_debug);  in dev_debug_show()
61 	struct video_device *vdev = to_video_device(cd);  in dev_debug_store()  local
69 	vdev->dev_debug = value;  in dev_debug_store()
77 	struct video_device *vdev = to_video_device(cd);  in name_show()  local
79 	return sprintf(buf, "%.*s\n", (int)sizeof(vdev->name), vdev->name);  in name_show()
123 static inline void devnode_set(struct video_device *vdev)  in devnode_set()  argument
125 	set_bit(vdev->num, devnode_bits(vdev->vfl_type));  in devnode_set()
129 static inline void devnode_clear(struct video_device *vdev)  in devnode_clear()  argument
131 	clear_bit(vdev->num, devnode_bits(vdev->vfl_type));  in devnode_clear()
135 static inline int devnode_find(struct video_device *vdev, int from, int to)  in devnode_find()  argument
137 	return find_next_zero_bit(devnode_bits(vdev->vfl_type), to, from);  in devnode_find()
146 void video_device_release(struct video_device *vdev)  in video_device_release()  argument
148 	kfree(vdev);  in video_device_release()
152 void video_device_release_empty(struct video_device *vdev)  in video_device_release_empty()  argument
159 static inline void video_get(struct video_device *vdev)  in video_get()  argument
161 	get_device(&vdev->dev);  in video_get()
164 static inline void video_put(struct video_device *vdev)  in video_put()  argument
166 	put_device(&vdev->dev);  in video_put()
172 	struct video_device *vdev = to_video_device(cd);  in v4l2_device_release()  local
173 	struct v4l2_device *v4l2_dev = vdev->v4l2_dev;  in v4l2_device_release()
176 	if (WARN_ON(video_device[vdev->minor] != vdev)) {  in v4l2_device_release()
183 	video_device[vdev->minor] = NULL;  in v4l2_device_release()
186 	cdev_del(vdev->cdev);  in v4l2_device_release()
189 	vdev->cdev = NULL;  in v4l2_device_release()
192 	devnode_clear(vdev);  in v4l2_device_release()
198 	    vdev->vfl_type != VFL_TYPE_SUBDEV)  in v4l2_device_release()
199 		media_device_unregister_entity(&vdev->entity);  in v4l2_device_release()
215 	vdev->release(vdev);  in v4l2_device_release()
300 	struct video_device *vdev = video_devdata(filp);  in v4l2_read()  local
303 	if (!vdev->fops->read)  in v4l2_read()
305 	if (video_is_registered(vdev))  in v4l2_read()
306 		ret = vdev->fops->read(filp, buf, sz, off);  in v4l2_read()
307 	if ((vdev->dev_debug & V4L2_DEV_DEBUG_FOP) &&  in v4l2_read()
308 	    (vdev->dev_debug & V4L2_DEV_DEBUG_STREAMING))  in v4l2_read()
310 			video_device_node_name(vdev), sz, ret);  in v4l2_read()
317 	struct video_device *vdev = video_devdata(filp);  in v4l2_write()  local
320 	if (!vdev->fops->write)  in v4l2_write()
322 	if (video_is_registered(vdev))  in v4l2_write()
323 		ret = vdev->fops->write(filp, buf, sz, off);  in v4l2_write()
324 	if ((vdev->dev_debug & V4L2_DEV_DEBUG_FOP) &&  in v4l2_write()
325 	    (vdev->dev_debug & V4L2_DEV_DEBUG_STREAMING))  in v4l2_write()
327 			video_device_node_name(vdev), sz, ret);  in v4l2_write()
333 	struct video_device *vdev = video_devdata(filp);  in v4l2_poll()  local
336 	if (!vdev->fops->poll)  in v4l2_poll()
338 	if (video_is_registered(vdev))  in v4l2_poll()
339 		res = vdev->fops->poll(filp, poll);  in v4l2_poll()
340 	if (vdev->dev_debug & V4L2_DEV_DEBUG_POLL)  in v4l2_poll()
342 			video_device_node_name(vdev), res);  in v4l2_poll()
348 	struct video_device *vdev = video_devdata(filp);  in v4l2_ioctl()  local
351 	if (vdev->fops->unlocked_ioctl) {  in v4l2_ioctl()
352 		struct mutex *lock = v4l2_ioctl_get_lock(vdev, cmd);  in v4l2_ioctl()
356 		if (video_is_registered(vdev))  in v4l2_ioctl()
357 			ret = vdev->fops->unlocked_ioctl(filp, cmd, arg);  in v4l2_ioctl()
373 	struct video_device *vdev = video_devdata(filp);  in v4l2_get_unmapped_area()  local
376 	if (!vdev->fops->get_unmapped_area)  in v4l2_get_unmapped_area()
378 	if (!video_is_registered(vdev))  in v4l2_get_unmapped_area()
380 	ret = vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags);  in v4l2_get_unmapped_area()
381 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_get_unmapped_area()
383 			video_device_node_name(vdev), ret);  in v4l2_get_unmapped_area()
390 	struct video_device *vdev = video_devdata(filp);  in v4l2_mmap()  local
393 	if (!vdev->fops->mmap)  in v4l2_mmap()
395 	if (video_is_registered(vdev))  in v4l2_mmap()
396 		ret = vdev->fops->mmap(filp, vm);  in v4l2_mmap()
397 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_mmap()
399 			video_device_node_name(vdev), ret);  in v4l2_mmap()
406 	struct video_device *vdev;  in v4l2_open()  local
411 	vdev = video_devdata(filp);  in v4l2_open()
413 	if (vdev == NULL || !video_is_registered(vdev)) {  in v4l2_open()
418 	video_get(vdev);  in v4l2_open()
420 	if (vdev->fops->open) {  in v4l2_open()
421 		if (video_is_registered(vdev))  in v4l2_open()
422 			ret = vdev->fops->open(filp);  in v4l2_open()
427 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_open()
429 			video_device_node_name(vdev), ret);  in v4l2_open()
432 		video_put(vdev);  in v4l2_open()
439 	struct video_device *vdev = video_devdata(filp);  in v4l2_release()  local
442 	if (vdev->fops->release)  in v4l2_release()
443 		ret = vdev->fops->release(filp);  in v4l2_release()
444 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_release()
446 			video_device_node_name(vdev));  in v4l2_release()
450 	video_put(vdev);  in v4l2_release()
483 static int get_index(struct video_device *vdev)  in get_index()  argument
494 		    video_device[i]->v4l2_dev == vdev->v4l2_dev) {  in get_index()
519 static void determine_valid_ioctls(struct video_device *vdev)  in determine_valid_ioctls()  argument
522 	const struct v4l2_ioctl_ops *ops = vdev->ioctl_ops;  in determine_valid_ioctls()
523 	bool is_vid = vdev->vfl_type == VFL_TYPE_GRABBER;  in determine_valid_ioctls()
524 	bool is_vbi = vdev->vfl_type == VFL_TYPE_VBI;  in determine_valid_ioctls()
525 	bool is_radio = vdev->vfl_type == VFL_TYPE_RADIO;  in determine_valid_ioctls()
526 	bool is_sdr = vdev->vfl_type == VFL_TYPE_SDR;  in determine_valid_ioctls()
527 	bool is_rx = vdev->vfl_dir != VFL_DIR_TX;  in determine_valid_ioctls()
528 	bool is_tx = vdev->vfl_dir != VFL_DIR_RX;  in determine_valid_ioctls()
542 	if (vdev->ctrl_handler || ops->vidioc_queryctrl)  in determine_valid_ioctls()
544 	if (vdev->ctrl_handler || ops->vidioc_query_ext_ctrl)  in determine_valid_ioctls()
546 	if (vdev->ctrl_handler || ops->vidioc_g_ctrl || ops->vidioc_g_ext_ctrls)  in determine_valid_ioctls()
548 	if (vdev->ctrl_handler || ops->vidioc_s_ctrl || ops->vidioc_s_ext_ctrls)  in determine_valid_ioctls()
550 	if (vdev->ctrl_handler || ops->vidioc_g_ext_ctrls)  in determine_valid_ioctls()
552 	if (vdev->ctrl_handler || ops->vidioc_s_ext_ctrls)  in determine_valid_ioctls()
554 	if (vdev->ctrl_handler || ops->vidioc_try_ext_ctrls)  in determine_valid_ioctls()
556 	if (vdev->ctrl_handler || ops->vidioc_querymenu)  in determine_valid_ioctls()
690 		if (ops->vidioc_g_parm || (vdev->vfl_type == VFL_TYPE_GRABBER &&  in determine_valid_ioctls()
712 	bitmap_andnot(vdev->valid_ioctls, valid_ioctls, vdev->valid_ioctls,  in determine_valid_ioctls()
750 int __video_register_device(struct video_device *vdev, int type, int nr,  in __video_register_device()  argument
761 	vdev->minor = -1;  in __video_register_device()
764 	if (WARN_ON(!vdev->release))  in __video_register_device()
767 	if (WARN_ON(!vdev->v4l2_dev))  in __video_register_device()
771 	spin_lock_init(&vdev->fh_lock);  in __video_register_device()
772 	INIT_LIST_HEAD(&vdev->fh_list);  in __video_register_device()
798 	vdev->vfl_type = type;  in __video_register_device()
799 	vdev->cdev = NULL;  in __video_register_device()
800 	if (vdev->dev_parent == NULL)  in __video_register_device()
801 		vdev->dev_parent = vdev->v4l2_dev->dev;  in __video_register_device()
802 	if (vdev->ctrl_handler == NULL)  in __video_register_device()
803 		vdev->ctrl_handler = vdev->v4l2_dev->ctrl_handler;  in __video_register_device()
806 	if (vdev->prio == NULL)  in __video_register_device()
807 		vdev->prio = &vdev->v4l2_dev->prio;  in __video_register_device()
838 	nr = devnode_find(vdev, nr == -1 ? 0 : nr, minor_cnt);  in __video_register_device()
840 		nr = devnode_find(vdev, 0, minor_cnt);  in __video_register_device()
861 	vdev->minor = i + minor_offset;  in __video_register_device()
862 	vdev->num = nr;  in __video_register_device()
863 	devnode_set(vdev);  in __video_register_device()
866 	WARN_ON(video_device[vdev->minor] != NULL);  in __video_register_device()
867 	vdev->index = get_index(vdev);  in __video_register_device()
868 	video_device[vdev->minor] = vdev;  in __video_register_device()
871 	if (vdev->ioctl_ops)  in __video_register_device()
872 		determine_valid_ioctls(vdev);  in __video_register_device()
875 	vdev->cdev = cdev_alloc();  in __video_register_device()
876 	if (vdev->cdev == NULL) {  in __video_register_device()
880 	vdev->cdev->ops = &v4l2_fops;  in __video_register_device()
881 	vdev->cdev->owner = owner;  in __video_register_device()
882 	ret = cdev_add(vdev->cdev, MKDEV(VIDEO_MAJOR, vdev->minor), 1);  in __video_register_device()
885 		kfree(vdev->cdev);  in __video_register_device()
886 		vdev->cdev = NULL;  in __video_register_device()
891 	vdev->dev.class = &video_class;  in __video_register_device()
892 	vdev->dev.devt = MKDEV(VIDEO_MAJOR, vdev->minor);  in __video_register_device()
893 	vdev->dev.parent = vdev->dev_parent;  in __video_register_device()
894 	dev_set_name(&vdev->dev, "%s%d", name_base, vdev->num);  in __video_register_device()
895 	ret = device_register(&vdev->dev);  in __video_register_device()
902 	vdev->dev.release = v4l2_device_release;  in __video_register_device()
904 	if (nr != -1 && nr != vdev->num && warn_if_nr_in_use)  in __video_register_device()
906 			name_base, nr, video_device_node_name(vdev));  in __video_register_device()
909 	v4l2_device_get(vdev->v4l2_dev);  in __video_register_device()
913 	if (vdev->v4l2_dev->mdev &&  in __video_register_device()
914 	    vdev->vfl_type != VFL_TYPE_SUBDEV) {  in __video_register_device()
915 		vdev->entity.type = MEDIA_ENT_T_DEVNODE_V4L;  in __video_register_device()
916 		vdev->entity.name = vdev->name;  in __video_register_device()
917 		vdev->entity.info.dev.major = VIDEO_MAJOR;  in __video_register_device()
918 		vdev->entity.info.dev.minor = vdev->minor;  in __video_register_device()
919 		ret = media_device_register_entity(vdev->v4l2_dev->mdev,  in __video_register_device()
920 			&vdev->entity);  in __video_register_device()
928 	set_bit(V4L2_FL_REGISTERED, &vdev->flags);  in __video_register_device()
934 	if (vdev->cdev)  in __video_register_device()
935 		cdev_del(vdev->cdev);  in __video_register_device()
936 	video_device[vdev->minor] = NULL;  in __video_register_device()
937 	devnode_clear(vdev);  in __video_register_device()
940 	vdev->minor = -1;  in __video_register_device()
952 void video_unregister_device(struct video_device *vdev)  in video_unregister_device()  argument
955 	if (!vdev || !video_is_registered(vdev))  in video_unregister_device()
962 	clear_bit(V4L2_FL_REGISTERED, &vdev->flags);  in video_unregister_device()
964 	device_unregister(&vdev->dev);  in video_unregister_device()