888 static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,  in uvc_find_control()  argument
901 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_find_control()
914 static int uvc_ctrl_populate_cache(struct uvc_video_chain *chain,  in uvc_ctrl_populate_cache()  argument
920 		ret = uvc_query_ctrl(chain->dev, UVC_GET_DEF, ctrl->entity->id,  in uvc_ctrl_populate_cache()
921 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
929 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MIN, ctrl->entity->id,  in uvc_ctrl_populate_cache()
930 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
937 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MAX, ctrl->entity->id,  in uvc_ctrl_populate_cache()
938 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
945 		ret = uvc_query_ctrl(chain->dev, UVC_GET_RES, ctrl->entity->id,  in uvc_ctrl_populate_cache()
946 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
958 			uvc_warn_once(chain->dev, UVC_WARN_XU_GET_RES,  in uvc_ctrl_populate_cache()
990 static int __uvc_ctrl_get(struct uvc_video_chain *chain,  in __uvc_ctrl_get()  argument
1000 		ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, ctrl->entity->id,  in __uvc_ctrl_get()
1001 				chain->dev->intfnum, ctrl->info.selector,  in __uvc_ctrl_get()
1016 static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in __uvc_query_v4l2_ctrl()  argument
1042 		int ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);  in __uvc_query_v4l2_ctrl()
1051 		int ret = uvc_ctrl_populate_cache(chain, ctrl);  in __uvc_query_v4l2_ctrl()
1108 int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in uvc_query_v4l2_ctrl()  argument
1115 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1119 	ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);  in uvc_query_v4l2_ctrl()
1125 	ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);  in uvc_query_v4l2_ctrl()
1127 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1140 int uvc_query_v4l2_menu(struct uvc_video_chain *chain,  in uvc_query_v4l2_menu()  argument
1154 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1158 	ctrl = uvc_find_control(chain, query_menu->id, &mapping);  in uvc_query_v4l2_menu()
1176 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_query_v4l2_menu()
1192 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1200 static void uvc_ctrl_fill_event(struct uvc_video_chain *chain,  in uvc_ctrl_fill_event()  argument
1208 	__uvc_query_v4l2_ctrl(chain, ctrl, mapping, &v4l2_ctrl);  in uvc_ctrl_fill_event()
1230 static void uvc_ctrl_send_event(struct uvc_video_chain *chain,  in uvc_ctrl_send_event()  argument
1241 	uvc_ctrl_fill_event(chain, &ev, ctrl, mapping, value, changes);  in uvc_ctrl_send_event()
1256 static void uvc_ctrl_send_slave_event(struct uvc_video_chain *chain,  in uvc_ctrl_send_slave_event()  argument
1268 	if (__uvc_ctrl_get(chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_send_slave_event()
1271 	uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes);  in uvc_ctrl_send_slave_event()
1279 	struct uvc_video_chain *chain = w->chain;  in uvc_ctrl_status_event_work()  local
1286 	mutex_lock(&chain->ctrl_mutex);  in uvc_ctrl_status_event_work()
1302 			uvc_ctrl_send_slave_event(chain, handle, ctrl,  in uvc_ctrl_status_event_work()
1306 		uvc_ctrl_send_event(chain, handle, ctrl, mapping, value,  in uvc_ctrl_status_event_work()
1310 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_status_event_work()
1320 bool uvc_ctrl_status_event(struct urb *urb, struct uvc_video_chain *chain,  in uvc_ctrl_status_event()  argument
1323 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_status_event()
1333 	w->chain = chain;  in uvc_ctrl_status_event()
1364 		ctrl = uvc_find_control(handle->chain, xctrls[i].id, &mapping);  in uvc_ctrl_send_events()
1384 			uvc_ctrl_send_slave_event(handle->chain, handle, ctrl,  in uvc_ctrl_send_events()
1397 		uvc_ctrl_send_event(handle->chain, handle, ctrl, mapping,  in uvc_ctrl_send_events()
1409 	ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1413 	ctrl = uvc_find_control(handle->chain, sev->id, &mapping);  in uvc_ctrl_add_event()
1425 		if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_add_event()
1428 		uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val,  in uvc_ctrl_add_event()
1437 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1445 	mutex_lock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1447 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1481 int uvc_ctrl_begin(struct uvc_video_chain *chain)  in uvc_ctrl_begin()  argument
1483 	return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0;  in uvc_ctrl_begin()
1540 	struct uvc_video_chain *chain = handle->chain;  in __uvc_ctrl_commit()  local
1545 	list_for_each_entry(entity, &chain->entities, chain) {  in __uvc_ctrl_commit()
1546 		ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback);  in __uvc_ctrl_commit()
1554 	mutex_unlock(&chain->ctrl_mutex);  in __uvc_ctrl_commit()
1558 int uvc_ctrl_get(struct uvc_video_chain *chain,  in uvc_ctrl_get()  argument
1564 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_get()
1568 	return __uvc_ctrl_get(chain, ctrl, mapping, &xctrl->value);  in uvc_ctrl_get()
1574 	struct uvc_video_chain *chain = handle->chain;  in uvc_ctrl_set()  local
1583 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_set()
1593 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1632 				ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1659 			ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR,  in uvc_ctrl_set()
1660 				ctrl->entity->id, chain->dev->intfnum,  in uvc_ctrl_set()
1842 int uvc_xu_ctrl_query(struct uvc_video_chain *chain,  in uvc_xu_ctrl_query()  argument
1854 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_xu_ctrl_query()
1881 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_xu_ctrl_query()
1884 	ret = uvc_ctrl_init_xu_ctrl(chain->dev, ctrl);  in uvc_xu_ctrl_query()
1946 	ret = uvc_query_ctrl(chain->dev, xqry->query, xqry->unit,  in uvc_xu_ctrl_query()
1947 			     chain->dev->intfnum, xqry->selector, data, size);  in uvc_xu_ctrl_query()
1956 	mutex_unlock(&chain->ctrl_mutex);  in uvc_xu_ctrl_query()
2085 int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,  in uvc_ctrl_add_mapping()  argument
2088 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_add_mapping()
2103 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_ctrl_add_mapping()
2124 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_ctrl_add_mapping()
2166 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_add_mapping()