889 static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,  in uvc_find_control()  argument
902 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_find_control()
909 		uvc_dbg(chain->dev, CONTROL, "Control 0x%08x not found\n",  in uvc_find_control()
915 static int uvc_ctrl_populate_cache(struct uvc_video_chain *chain,  in uvc_ctrl_populate_cache()  argument
921 		ret = uvc_query_ctrl(chain->dev, UVC_GET_DEF, ctrl->entity->id,  in uvc_ctrl_populate_cache()
922 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
930 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MIN, ctrl->entity->id,  in uvc_ctrl_populate_cache()
931 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
938 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MAX, ctrl->entity->id,  in uvc_ctrl_populate_cache()
939 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
946 		ret = uvc_query_ctrl(chain->dev, UVC_GET_RES, ctrl->entity->id,  in uvc_ctrl_populate_cache()
947 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
959 			uvc_warn_once(chain->dev, UVC_WARN_XU_GET_RES,  in uvc_ctrl_populate_cache()
991 static int __uvc_ctrl_get(struct uvc_video_chain *chain,  in __uvc_ctrl_get()  argument
1002 			ret = ctrl->entity->get_cur(chain->dev,  in __uvc_ctrl_get()
1008 			ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR,  in __uvc_ctrl_get()
1010 				chain->dev->intfnum,  in __uvc_ctrl_get()
1027 static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in __uvc_query_v4l2_ctrl()  argument
1053 		int ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);  in __uvc_query_v4l2_ctrl()
1062 		int ret = uvc_ctrl_populate_cache(chain, ctrl);  in __uvc_query_v4l2_ctrl()
1119 int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in uvc_query_v4l2_ctrl()  argument
1126 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1130 	ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);  in uvc_query_v4l2_ctrl()
1136 	ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);  in uvc_query_v4l2_ctrl()
1138 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1151 int uvc_query_v4l2_menu(struct uvc_video_chain *chain,  in uvc_query_v4l2_menu()  argument
1165 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1169 	ctrl = uvc_find_control(chain, query_menu->id, &mapping);  in uvc_query_v4l2_menu()
1187 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_query_v4l2_menu()
1203 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1211 static void uvc_ctrl_fill_event(struct uvc_video_chain *chain,  in uvc_ctrl_fill_event()  argument
1219 	__uvc_query_v4l2_ctrl(chain, ctrl, mapping, &v4l2_ctrl);  in uvc_ctrl_fill_event()
1241 static void uvc_ctrl_send_event(struct uvc_video_chain *chain,  in uvc_ctrl_send_event()  argument
1252 	uvc_ctrl_fill_event(chain, &ev, ctrl, mapping, value, changes);  in uvc_ctrl_send_event()
1267 static void uvc_ctrl_send_slave_event(struct uvc_video_chain *chain,  in uvc_ctrl_send_slave_event()  argument
1279 	if (__uvc_ctrl_get(chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_send_slave_event()
1282 	uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes);  in uvc_ctrl_send_slave_event()
1285 void uvc_ctrl_status_event(struct uvc_video_chain *chain,  in uvc_ctrl_status_event()  argument
1292 	mutex_lock(&chain->ctrl_mutex);  in uvc_ctrl_status_event()
1308 			uvc_ctrl_send_slave_event(chain, handle, ctrl,  in uvc_ctrl_status_event()
1312 		uvc_ctrl_send_event(chain, handle, ctrl, mapping, value,  in uvc_ctrl_status_event()
1316 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_status_event()
1326 	uvc_ctrl_status_event(w->chain, w->ctrl, w->data);  in uvc_ctrl_status_event_work()
1336 bool uvc_ctrl_status_event_async(struct urb *urb, struct uvc_video_chain *chain,  in uvc_ctrl_status_event_async()  argument
1339 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_status_event_async()
1349 	w->chain = chain;  in uvc_ctrl_status_event_async()
1380 		ctrl = uvc_find_control(handle->chain, xctrls[i].id, &mapping);  in uvc_ctrl_send_events()
1400 			uvc_ctrl_send_slave_event(handle->chain, handle, ctrl,  in uvc_ctrl_send_events()
1413 		uvc_ctrl_send_event(handle->chain, handle, ctrl, mapping,  in uvc_ctrl_send_events()
1425 	ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1429 	ctrl = uvc_find_control(handle->chain, sev->id, &mapping);  in uvc_ctrl_add_event()
1441 		if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_add_event()
1444 		uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val,  in uvc_ctrl_add_event()
1453 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1461 	mutex_lock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1463 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1497 int uvc_ctrl_begin(struct uvc_video_chain *chain)  in uvc_ctrl_begin()  argument
1499 	return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0;  in uvc_ctrl_begin()
1556 	struct uvc_video_chain *chain = handle->chain;  in __uvc_ctrl_commit()  local
1561 	list_for_each_entry(entity, &chain->entities, chain) {  in __uvc_ctrl_commit()
1562 		ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback);  in __uvc_ctrl_commit()
1570 	mutex_unlock(&chain->ctrl_mutex);  in __uvc_ctrl_commit()
1574 int uvc_ctrl_get(struct uvc_video_chain *chain,  in uvc_ctrl_get()  argument
1580 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_get()
1584 	return __uvc_ctrl_get(chain, ctrl, mapping, &xctrl->value);  in uvc_ctrl_get()
1590 	struct uvc_video_chain *chain = handle->chain;  in uvc_ctrl_set()  local
1599 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_set()
1609 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1648 				ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1675 			ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR,  in uvc_ctrl_set()
1676 				ctrl->entity->id, chain->dev->intfnum,  in uvc_ctrl_set()
1862 int uvc_xu_ctrl_query(struct uvc_video_chain *chain,  in uvc_xu_ctrl_query()  argument
1876 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_xu_ctrl_query()
1885 		uvc_dbg(chain->dev, CONTROL, "Extension unit %u not found\n",  in uvc_xu_ctrl_query()
1901 		uvc_dbg(chain->dev, CONTROL, "Control %pUl/%u not found\n",  in uvc_xu_ctrl_query()
1906 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_xu_ctrl_query()
1909 	ret = uvc_ctrl_init_xu_ctrl(chain->dev, ctrl);  in uvc_xu_ctrl_query()
1971 	ret = uvc_query_ctrl(chain->dev, xqry->query, xqry->unit,  in uvc_xu_ctrl_query()
1972 			     chain->dev->intfnum, xqry->selector, data, size);  in uvc_xu_ctrl_query()
1981 	mutex_unlock(&chain->ctrl_mutex);  in uvc_xu_ctrl_query()
2095 int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,  in uvc_ctrl_add_mapping()  argument
2098 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_add_mapping()
2113 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_ctrl_add_mapping()
2134 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_ctrl_add_mapping()
2176 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_add_mapping()