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()
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()
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()
428 	if (!video_is_registered(vdev)) {  in v4l2_open()
433 	ret = vdev->fops->open(filp);  in v4l2_open()
438 	if (WARN_ON(!test_bit(V4L2_FL_USES_V4L2_FH, &vdev->flags))) {  in v4l2_open()
439 		vdev->fops->release(filp);  in v4l2_open()
444 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_open()
446 			video_device_node_name(vdev), ret);  in v4l2_open()
450 		video_put(vdev);  in v4l2_open()
457 	struct video_device *vdev = video_devdata(filp);  in v4l2_release()  local
466 	if (v4l2_device_supports_requests(vdev->v4l2_dev)) {  in v4l2_release()
467 		mutex_lock(&vdev->v4l2_dev->mdev->req_queue_mutex);  in v4l2_release()
468 		ret = vdev->fops->release(filp);  in v4l2_release()
469 		mutex_unlock(&vdev->v4l2_dev->mdev->req_queue_mutex);  in v4l2_release()
471 		ret = vdev->fops->release(filp);  in v4l2_release()
474 	if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)  in v4l2_release()
476 			video_device_node_name(vdev));  in v4l2_release()
480 	video_put(vdev);  in v4l2_release()
512 static int get_index(struct video_device *vdev)  in get_index()  argument
523 		    video_devices[i]->v4l2_dev == vdev->v4l2_dev) {  in get_index()
547 static void determine_valid_ioctls(struct video_device *vdev)  in determine_valid_ioctls()  argument
557 	const struct v4l2_ioctl_ops *ops = vdev->ioctl_ops;  in determine_valid_ioctls()
558 	bool is_vid = vdev->vfl_type == VFL_TYPE_VIDEO &&  in determine_valid_ioctls()
559 		      (vdev->device_caps & vid_caps);  in determine_valid_ioctls()
560 	bool is_vbi = vdev->vfl_type == VFL_TYPE_VBI;  in determine_valid_ioctls()
561 	bool is_radio = vdev->vfl_type == VFL_TYPE_RADIO;  in determine_valid_ioctls()
562 	bool is_sdr = vdev->vfl_type == VFL_TYPE_SDR;  in determine_valid_ioctls()
563 	bool is_tch = vdev->vfl_type == VFL_TYPE_TOUCH;  in determine_valid_ioctls()
564 	bool is_meta = vdev->vfl_type == VFL_TYPE_VIDEO &&  in determine_valid_ioctls()
565 		       (vdev->device_caps & meta_caps);  in determine_valid_ioctls()
566 	bool is_rx = vdev->vfl_dir != VFL_DIR_TX;  in determine_valid_ioctls()
567 	bool is_tx = vdev->vfl_dir != VFL_DIR_RX;  in determine_valid_ioctls()
568 	bool is_io_mc = vdev->device_caps & V4L2_CAP_IO_MC;  in determine_valid_ioctls()
569 	bool has_streaming = vdev->device_caps & V4L2_CAP_STREAMING;  in determine_valid_ioctls()
570 	bool is_edid =  vdev->device_caps & V4L2_CAP_EDID;  in determine_valid_ioctls()
584 	if (vdev->ctrl_handler || ops->vidioc_query_ext_ctrl)  in determine_valid_ioctls()
586 	if (vdev->ctrl_handler || ops->vidioc_query_ext_ctrl)  in determine_valid_ioctls()
588 	if (vdev->ctrl_handler || ops->vidioc_g_ext_ctrls)  in determine_valid_ioctls()
590 	if (vdev->ctrl_handler || ops->vidioc_s_ext_ctrls)  in determine_valid_ioctls()
592 	if (vdev->ctrl_handler || ops->vidioc_g_ext_ctrls)  in determine_valid_ioctls()
594 	if (vdev->ctrl_handler || ops->vidioc_s_ext_ctrls)  in determine_valid_ioctls()
596 	if (vdev->ctrl_handler || ops->vidioc_try_ext_ctrls)  in determine_valid_ioctls()
598 	if (vdev->ctrl_handler || ops->vidioc_querymenu)  in determine_valid_ioctls()
657 		    !test_bit(_IOC_NR(VIDIOC_G_SELECTION), vdev->valid_ioctls)) {  in determine_valid_ioctls()
662 		    !test_bit(_IOC_NR(VIDIOC_S_SELECTION), vdev->valid_ioctls))  in determine_valid_ioctls()
813 	bitmap_andnot(vdev->valid_ioctls, valid_ioctls, vdev->valid_ioctls,  in determine_valid_ioctls()
817 static int video_register_media_controller(struct video_device *vdev)  in video_register_media_controller()  argument
826 	if (!vdev->v4l2_dev->mdev || vdev->vfl_dir == VFL_DIR_M2M)  in video_register_media_controller()
829 	vdev->entity.obj_type = MEDIA_ENTITY_TYPE_VIDEO_DEVICE;  in video_register_media_controller()
830 	vdev->entity.function = MEDIA_ENT_F_UNKNOWN;  in video_register_media_controller()
832 	switch (vdev->vfl_type) {  in video_register_media_controller()
835 		vdev->entity.function = MEDIA_ENT_F_IO_V4L;  in video_register_media_controller()
839 		vdev->entity.function = MEDIA_ENT_F_IO_VBI;  in video_register_media_controller()
843 		vdev->entity.function = MEDIA_ENT_F_IO_SWRADIO;  in video_register_media_controller()
847 		vdev->entity.function = MEDIA_ENT_F_IO_V4L;  in video_register_media_controller()
865 	if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) {  in video_register_media_controller()
866 		vdev->entity.name = vdev->name;  in video_register_media_controller()
869 		vdev->entity.info.dev.major = VIDEO_MAJOR;  in video_register_media_controller()
870 		vdev->entity.info.dev.minor = vdev->minor;  in video_register_media_controller()
872 		ret = media_device_register_entity(vdev->v4l2_dev->mdev,  in video_register_media_controller()
873 						   &vdev->entity);  in video_register_media_controller()
881 	vdev->intf_devnode = media_devnode_create(vdev->v4l2_dev->mdev,  in video_register_media_controller()
884 						  vdev->minor);  in video_register_media_controller()
885 	if (!vdev->intf_devnode) {  in video_register_media_controller()
886 		media_device_unregister_entity(&vdev->entity);  in video_register_media_controller()
890 	if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) {  in video_register_media_controller()
893 		link = media_create_intf_link(&vdev->entity,  in video_register_media_controller()
894 					      &vdev->intf_devnode->intf,  in video_register_media_controller()
898 			media_devnode_remove(vdev->intf_devnode);  in video_register_media_controller()
899 			media_device_unregister_entity(&vdev->entity);  in video_register_media_controller()
910 int __video_register_device(struct video_device *vdev,  in __video_register_device()  argument
923 	vdev->minor = -1;  in __video_register_device()
926 	if (WARN_ON(!vdev->release))  in __video_register_device()
929 	if (WARN_ON(!vdev->v4l2_dev))  in __video_register_device()
932 	if (WARN_ON(type != VFL_TYPE_SUBDEV && !vdev->device_caps))  in __video_register_device()
935 	if (WARN_ON(!vdev->fops || !vdev->fops->open || !vdev->fops->release))  in __video_register_device()
939 	spin_lock_init(&vdev->fh_lock);  in __video_register_device()
940 	INIT_LIST_HEAD(&vdev->fh_list);  in __video_register_device()
969 	vdev->vfl_type = type;  in __video_register_device()
970 	vdev->cdev = NULL;  in __video_register_device()
971 	if (vdev->dev_parent == NULL)  in __video_register_device()
972 		vdev->dev_parent = vdev->v4l2_dev->dev;  in __video_register_device()
973 	if (vdev->ctrl_handler == NULL)  in __video_register_device()
974 		vdev->ctrl_handler = vdev->v4l2_dev->ctrl_handler;  in __video_register_device()
977 	if (vdev->prio == NULL)  in __video_register_device()
978 		vdev->prio = &vdev->v4l2_dev->prio;  in __video_register_device()
1009 	nr = devnode_find(vdev, nr == -1 ? 0 : nr, minor_cnt);  in __video_register_device()
1011 		nr = devnode_find(vdev, 0, minor_cnt);  in __video_register_device()
1032 	vdev->minor = i + minor_offset;  in __video_register_device()
1033 	vdev->num = nr;  in __video_register_device()
1036 	if (WARN_ON(video_devices[vdev->minor])) {  in __video_register_device()
1041 	devnode_set(vdev);  in __video_register_device()
1042 	vdev->index = get_index(vdev);  in __video_register_device()
1043 	video_devices[vdev->minor] = vdev;  in __video_register_device()
1046 	if (vdev->ioctl_ops)  in __video_register_device()
1047 		determine_valid_ioctls(vdev);  in __video_register_device()
1050 	vdev->cdev = cdev_alloc();  in __video_register_device()
1051 	if (vdev->cdev == NULL) {  in __video_register_device()
1055 	vdev->cdev->ops = &v4l2_fops;  in __video_register_device()
1056 	vdev->cdev->owner = owner;  in __video_register_device()
1057 	ret = cdev_add(vdev->cdev, MKDEV(VIDEO_MAJOR, vdev->minor), 1);  in __video_register_device()
1060 		kfree(vdev->cdev);  in __video_register_device()
1061 		vdev->cdev = NULL;  in __video_register_device()
1066 	vdev->dev.class = &video_class;  in __video_register_device()
1067 	vdev->dev.devt = MKDEV(VIDEO_MAJOR, vdev->minor);  in __video_register_device()
1068 	vdev->dev.parent = vdev->dev_parent;  in __video_register_device()
1069 	vdev->dev.release = v4l2_device_release;  in __video_register_device()
1070 	dev_set_name(&vdev->dev, "%s%d", name_base, vdev->num);  in __video_register_device()
1073 	v4l2_device_get(vdev->v4l2_dev);  in __video_register_device()
1076 	ret = device_register(&vdev->dev);  in __video_register_device()
1080 		put_device(&vdev->dev);  in __video_register_device()
1084 	if (nr != -1 && nr != vdev->num && warn_if_nr_in_use)  in __video_register_device()
1086 			name_base, nr, video_device_node_name(vdev));  in __video_register_device()
1089 	ret = video_register_media_controller(vdev);  in __video_register_device()
1092 	set_bit(V4L2_FL_REGISTERED, &vdev->flags);  in __video_register_device()
1099 	if (vdev->cdev)  in __video_register_device()
1100 		cdev_del(vdev->cdev);  in __video_register_device()
1101 	video_devices[vdev->minor] = NULL;  in __video_register_device()
1102 	devnode_clear(vdev);  in __video_register_device()
1105 	vdev->minor = -1;  in __video_register_device()
1117 void video_unregister_device(struct video_device *vdev)  in video_unregister_device()  argument
1120 	if (!vdev || !video_is_registered(vdev))  in video_unregister_device()
1127 	clear_bit(V4L2_FL_REGISTERED, &vdev->flags);  in video_unregister_device()
1129 	v4l2_event_wake_all(vdev);  in video_unregister_device()
1130 	device_unregister(&vdev->dev);  in video_unregister_device()
1146 __must_check int video_device_pipeline_start(struct video_device *vdev,  in video_device_pipeline_start()  argument
1149 	struct media_entity *entity = &vdev->entity;  in video_device_pipeline_start()
1158 __must_check int __video_device_pipeline_start(struct video_device *vdev,  in __video_device_pipeline_start()  argument
1161 	struct media_entity *entity = &vdev->entity;  in __video_device_pipeline_start()
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 void __video_device_pipeline_stop(struct video_device *vdev)  in __video_device_pipeline_stop()  argument
1183 	struct media_entity *entity = &vdev->entity;  in __video_device_pipeline_stop()
1192 __must_check int video_device_pipeline_alloc_start(struct video_device *vdev)  in video_device_pipeline_alloc_start()  argument
1194 	struct media_entity *entity = &vdev->entity;  in video_device_pipeline_alloc_start()
1203 struct media_pipeline *video_device_pipeline(struct video_device *vdev)  in video_device_pipeline()  argument
1205 	struct media_entity *entity = &vdev->entity;  in video_device_pipeline()