892 static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,  in uvc_find_control()  argument
905 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_find_control()
918 static int uvc_ctrl_populate_cache(struct uvc_video_chain *chain,  in uvc_ctrl_populate_cache()  argument
924 		ret = uvc_query_ctrl(chain->dev, UVC_GET_DEF, ctrl->entity->id,  in uvc_ctrl_populate_cache()
925 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
933 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MIN, ctrl->entity->id,  in uvc_ctrl_populate_cache()
934 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
941 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MAX, ctrl->entity->id,  in uvc_ctrl_populate_cache()
942 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
949 		ret = uvc_query_ctrl(chain->dev, UVC_GET_RES, ctrl->entity->id,  in uvc_ctrl_populate_cache()
950 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
962 			uvc_warn_once(chain->dev, UVC_WARN_XU_GET_RES,  in uvc_ctrl_populate_cache()
994 static int __uvc_ctrl_get(struct uvc_video_chain *chain,  in __uvc_ctrl_get()  argument
1004 		ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, ctrl->entity->id,  in __uvc_ctrl_get()
1005 				chain->dev->intfnum, ctrl->info.selector,  in __uvc_ctrl_get()
1020 static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in __uvc_query_v4l2_ctrl()  argument
1046 		int ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);  in __uvc_query_v4l2_ctrl()
1055 		int ret = uvc_ctrl_populate_cache(chain, ctrl);  in __uvc_query_v4l2_ctrl()
1112 int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in uvc_query_v4l2_ctrl()  argument
1119 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1123 	ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);  in uvc_query_v4l2_ctrl()
1129 	ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);  in uvc_query_v4l2_ctrl()
1131 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1144 int uvc_query_v4l2_menu(struct uvc_video_chain *chain,  in uvc_query_v4l2_menu()  argument
1158 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1162 	ctrl = uvc_find_control(chain, query_menu->id, &mapping);  in uvc_query_v4l2_menu()
1180 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_query_v4l2_menu()
1196 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1204 static void uvc_ctrl_fill_event(struct uvc_video_chain *chain,  in uvc_ctrl_fill_event()  argument
1212 	__uvc_query_v4l2_ctrl(chain, ctrl, mapping, &v4l2_ctrl);  in uvc_ctrl_fill_event()
1234 static void uvc_ctrl_send_event(struct uvc_video_chain *chain,  in uvc_ctrl_send_event()  argument
1245 	uvc_ctrl_fill_event(chain, &ev, ctrl, mapping, value, changes);  in uvc_ctrl_send_event()
1260 static void uvc_ctrl_send_slave_event(struct uvc_video_chain *chain,  in uvc_ctrl_send_slave_event()  argument
1272 	if (__uvc_ctrl_get(chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_send_slave_event()
1275 	uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes);  in uvc_ctrl_send_slave_event()
1283 	struct uvc_video_chain *chain = w->chain;  in uvc_ctrl_status_event_work()  local
1290 	mutex_lock(&chain->ctrl_mutex);  in uvc_ctrl_status_event_work()
1306 			uvc_ctrl_send_slave_event(chain, handle, ctrl,  in uvc_ctrl_status_event_work()
1310 		uvc_ctrl_send_event(chain, handle, ctrl, mapping, value,  in uvc_ctrl_status_event_work()
1314 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_status_event_work()
1324 bool uvc_ctrl_status_event(struct urb *urb, struct uvc_video_chain *chain,  in uvc_ctrl_status_event()  argument
1327 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_status_event()
1337 	w->chain = chain;  in uvc_ctrl_status_event()
1368 		ctrl = uvc_find_control(handle->chain, xctrls[i].id, &mapping);  in uvc_ctrl_send_events()
1388 			uvc_ctrl_send_slave_event(handle->chain, handle, ctrl,  in uvc_ctrl_send_events()
1401 		uvc_ctrl_send_event(handle->chain, handle, ctrl, mapping,  in uvc_ctrl_send_events()
1413 	ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1417 	ctrl = uvc_find_control(handle->chain, sev->id, &mapping);  in uvc_ctrl_add_event()
1429 		if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_add_event()
1432 		uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val,  in uvc_ctrl_add_event()
1441 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1449 	mutex_lock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1451 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1485 int uvc_ctrl_begin(struct uvc_video_chain *chain)  in uvc_ctrl_begin()  argument
1487 	return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0;  in uvc_ctrl_begin()
1544 	struct uvc_video_chain *chain = handle->chain;  in __uvc_ctrl_commit()  local
1549 	list_for_each_entry(entity, &chain->entities, chain) {  in __uvc_ctrl_commit()
1550 		ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback);  in __uvc_ctrl_commit()
1558 	mutex_unlock(&chain->ctrl_mutex);  in __uvc_ctrl_commit()
1562 int uvc_ctrl_get(struct uvc_video_chain *chain,  in uvc_ctrl_get()  argument
1568 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_get()
1572 	return __uvc_ctrl_get(chain, ctrl, mapping, &xctrl->value);  in uvc_ctrl_get()
1578 	struct uvc_video_chain *chain = handle->chain;  in uvc_ctrl_set()  local
1587 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_set()
1597 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1636 				ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1663 			ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR,  in uvc_ctrl_set()
1664 				ctrl->entity->id, chain->dev->intfnum,  in uvc_ctrl_set()
1846 int uvc_xu_ctrl_query(struct uvc_video_chain *chain,  in uvc_xu_ctrl_query()  argument
1860 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_xu_ctrl_query()
1890 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_xu_ctrl_query()
1893 	ret = uvc_ctrl_init_xu_ctrl(chain->dev, ctrl);  in uvc_xu_ctrl_query()
1955 	ret = uvc_query_ctrl(chain->dev, xqry->query, xqry->unit,  in uvc_xu_ctrl_query()
1956 			     chain->dev->intfnum, xqry->selector, data, size);  in uvc_xu_ctrl_query()
1965 	mutex_unlock(&chain->ctrl_mutex);  in uvc_xu_ctrl_query()
2080 int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,  in uvc_ctrl_add_mapping()  argument
2083 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_add_mapping()
2098 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_ctrl_add_mapping()
2119 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_ctrl_add_mapping()
2161 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_add_mapping()