891 static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,  in uvc_find_control()  argument
904 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_find_control()
917 static int uvc_ctrl_populate_cache(struct uvc_video_chain *chain,  in uvc_ctrl_populate_cache()  argument
923 		ret = uvc_query_ctrl(chain->dev, UVC_GET_DEF, ctrl->entity->id,  in uvc_ctrl_populate_cache()
924 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
932 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MIN, ctrl->entity->id,  in uvc_ctrl_populate_cache()
933 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
940 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MAX, ctrl->entity->id,  in uvc_ctrl_populate_cache()
941 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
948 		ret = uvc_query_ctrl(chain->dev, UVC_GET_RES, ctrl->entity->id,  in uvc_ctrl_populate_cache()
949 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
961 			uvc_warn_once(chain->dev, UVC_WARN_XU_GET_RES,  in uvc_ctrl_populate_cache()
973 static int __uvc_ctrl_get(struct uvc_video_chain *chain,  in __uvc_ctrl_get()  argument
985 		ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, ctrl->entity->id,  in __uvc_ctrl_get()
986 				chain->dev->intfnum, ctrl->info.selector,  in __uvc_ctrl_get()
1011 static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in __uvc_query_v4l2_ctrl()  argument
1037 		int ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);  in __uvc_query_v4l2_ctrl()
1046 		int ret = uvc_ctrl_populate_cache(chain, ctrl);  in __uvc_query_v4l2_ctrl()
1103 int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in uvc_query_v4l2_ctrl()  argument
1110 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1114 	ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);  in uvc_query_v4l2_ctrl()
1120 	ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);  in uvc_query_v4l2_ctrl()
1122 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1135 int uvc_query_v4l2_menu(struct uvc_video_chain *chain,  in uvc_query_v4l2_menu()  argument
1149 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1153 	ctrl = uvc_find_control(chain, query_menu->id, &mapping);  in uvc_query_v4l2_menu()
1171 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_query_v4l2_menu()
1187 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1195 static void uvc_ctrl_fill_event(struct uvc_video_chain *chain,  in uvc_ctrl_fill_event()  argument
1203 	__uvc_query_v4l2_ctrl(chain, ctrl, mapping, &v4l2_ctrl);  in uvc_ctrl_fill_event()
1228 	uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, value, changes);  in uvc_ctrl_send_event()
1261 	if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_send_slave_event()
1277 		ctrl = uvc_find_control(handle->chain, xctrls[i].id, &mapping);  in uvc_ctrl_send_events()
1312 	ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1316 	ctrl = uvc_find_control(handle->chain, sev->id, &mapping);  in uvc_ctrl_add_event()
1328 		if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_add_event()
1331 		uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val,  in uvc_ctrl_add_event()
1340 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1348 	mutex_lock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1350 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1384 int uvc_ctrl_begin(struct uvc_video_chain *chain)  in uvc_ctrl_begin()  argument
1386 	return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0;  in uvc_ctrl_begin()
1443 	struct uvc_video_chain *chain = handle->chain;  in __uvc_ctrl_commit()  local
1448 	list_for_each_entry(entity, &chain->entities, chain) {  in __uvc_ctrl_commit()
1449 		ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback);  in __uvc_ctrl_commit()
1457 	mutex_unlock(&chain->ctrl_mutex);  in __uvc_ctrl_commit()
1461 int uvc_ctrl_get(struct uvc_video_chain *chain,  in uvc_ctrl_get()  argument
1467 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_get()
1471 	return __uvc_ctrl_get(chain, ctrl, mapping, &xctrl->value);  in uvc_ctrl_get()
1474 int uvc_ctrl_set(struct uvc_video_chain *chain,  in uvc_ctrl_set()  argument
1485 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_set()
1495 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1534 				ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1561 			ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR,  in uvc_ctrl_set()
1562 				ctrl->entity->id, chain->dev->intfnum,  in uvc_ctrl_set()
1719 int uvc_xu_ctrl_query(struct uvc_video_chain *chain,  in uvc_xu_ctrl_query()  argument
1731 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_xu_ctrl_query()
1758 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_xu_ctrl_query()
1761 	ret = uvc_ctrl_init_xu_ctrl(chain->dev, ctrl);  in uvc_xu_ctrl_query()
1823 	ret = uvc_query_ctrl(chain->dev, xqry->query, xqry->unit,  in uvc_xu_ctrl_query()
1824 			     chain->dev->intfnum, xqry->selector, data, size);  in uvc_xu_ctrl_query()
1833 	mutex_unlock(&chain->ctrl_mutex);  in uvc_xu_ctrl_query()
1955 int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,  in uvc_ctrl_add_mapping()  argument
1958 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_add_mapping()
1973 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_ctrl_add_mapping()
1994 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_ctrl_add_mapping()
2029 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_add_mapping()