886 static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,  in uvc_find_control()  argument
899 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_find_control()
906 		uvc_dbg(chain->dev, CONTROL, "Control 0x%08x not found\n",  in uvc_find_control()
912 static int uvc_ctrl_populate_cache(struct uvc_video_chain *chain,  in uvc_ctrl_populate_cache()  argument
918 		ret = uvc_query_ctrl(chain->dev, UVC_GET_DEF, ctrl->entity->id,  in uvc_ctrl_populate_cache()
919 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
927 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MIN, ctrl->entity->id,  in uvc_ctrl_populate_cache()
928 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
935 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MAX, ctrl->entity->id,  in uvc_ctrl_populate_cache()
936 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
943 		ret = uvc_query_ctrl(chain->dev, UVC_GET_RES, ctrl->entity->id,  in uvc_ctrl_populate_cache()
944 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
957 			uvc_warn_once(chain->dev, UVC_WARN_XU_GET_RES,  in uvc_ctrl_populate_cache()
989 static int __uvc_ctrl_load_cur(struct uvc_video_chain *chain,  in __uvc_ctrl_load_cur()  argument
1008 		ret = ctrl->entity->get_cur(chain->dev, ctrl->entity,  in __uvc_ctrl_load_cur()
1012 		ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR,  in __uvc_ctrl_load_cur()
1013 				     ctrl->entity->id, chain->dev->intfnum,  in __uvc_ctrl_load_cur()
1025 static int __uvc_ctrl_get(struct uvc_video_chain *chain,  in __uvc_ctrl_get()  argument
1035 	ret = __uvc_ctrl_load_cur(chain, ctrl);  in __uvc_ctrl_get()
1045 static int __uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,  in __uvc_query_v4l2_class()  argument
1054 		if (!(chain->ctrl_class_bitmap & BIT(i)))  in __uvc_query_v4l2_class()
1069 static int uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,  in uvc_query_v4l2_class()  argument
1074 	idx = __uvc_query_v4l2_class(chain, req_id, found_id);  in uvc_query_v4l2_class()
1088 int uvc_ctrl_is_accessible(struct uvc_video_chain *chain, u32 v4l2_id,  in uvc_ctrl_is_accessible()  argument
1094 	if (__uvc_query_v4l2_class(chain, v4l2_id, 0) >= 0)  in uvc_ctrl_is_accessible()
1097 	ctrl = uvc_find_control(chain, v4l2_id, &mapping);  in uvc_ctrl_is_accessible()
1124 static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in __uvc_query_v4l2_ctrl()  argument
1151 		int ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);  in __uvc_query_v4l2_ctrl()
1160 		int ret = uvc_ctrl_populate_cache(chain, ctrl);  in __uvc_query_v4l2_ctrl()
1217 int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in uvc_query_v4l2_ctrl()  argument
1224 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1230 		ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, 0, v4l2_ctrl);  in uvc_query_v4l2_ctrl()
1235 	ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);  in uvc_query_v4l2_ctrl()
1247 		ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, mapping->id,  in uvc_query_v4l2_ctrl()
1253 	ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);  in uvc_query_v4l2_ctrl()
1255 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1268 int uvc_query_v4l2_menu(struct uvc_video_chain *chain,  in uvc_query_v4l2_menu()  argument
1282 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1286 	ctrl = uvc_find_control(chain, query_menu->id, &mapping);  in uvc_query_v4l2_menu()
1304 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_query_v4l2_menu()
1320 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1328 static void uvc_ctrl_fill_event(struct uvc_video_chain *chain,  in uvc_ctrl_fill_event()  argument
1336 	__uvc_query_v4l2_ctrl(chain, ctrl, mapping, &v4l2_ctrl);  in uvc_ctrl_fill_event()
1358 static void uvc_ctrl_send_event(struct uvc_video_chain *chain,  in uvc_ctrl_send_event()  argument
1369 	uvc_ctrl_fill_event(chain, &ev, ctrl, mapping, value, changes);  in uvc_ctrl_send_event()
1384 static void uvc_ctrl_send_slave_event(struct uvc_video_chain *chain,  in uvc_ctrl_send_slave_event()  argument
1396 	if (__uvc_ctrl_get(chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_send_slave_event()
1399 	uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes);  in uvc_ctrl_send_slave_event()
1402 void uvc_ctrl_status_event(struct uvc_video_chain *chain,  in uvc_ctrl_status_event()  argument
1409 	mutex_lock(&chain->ctrl_mutex);  in uvc_ctrl_status_event()
1425 			uvc_ctrl_send_slave_event(chain, handle, ctrl,  in uvc_ctrl_status_event()
1429 		uvc_ctrl_send_event(chain, handle, ctrl, mapping, value,  in uvc_ctrl_status_event()
1433 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_status_event()
1443 	uvc_ctrl_status_event(w->chain, w->ctrl, w->data);  in uvc_ctrl_status_event_work()
1453 bool uvc_ctrl_status_event_async(struct urb *urb, struct uvc_video_chain *chain,  in uvc_ctrl_status_event_async()  argument
1456 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_status_event_async()
1466 	w->chain = chain;  in uvc_ctrl_status_event_async()
1497 		ctrl = uvc_find_control(handle->chain, xctrls[i].id, &mapping);  in uvc_ctrl_send_events()
1517 			uvc_ctrl_send_slave_event(handle->chain, handle, ctrl,  in uvc_ctrl_send_events()
1530 		uvc_ctrl_send_event(handle->chain, handle, ctrl, mapping,  in uvc_ctrl_send_events()
1542 	ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1546 	if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0) {  in uvc_ctrl_add_event()
1551 	ctrl = uvc_find_control(handle->chain, sev->id, &mapping);  in uvc_ctrl_add_event()
1563 		if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_add_event()
1566 		uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val,  in uvc_ctrl_add_event()
1577 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1585 	mutex_lock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1586 	if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0)  in uvc_ctrl_del_event()
1590 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1624 int uvc_ctrl_begin(struct uvc_video_chain *chain)  in uvc_ctrl_begin()  argument
1626 	return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0;  in uvc_ctrl_begin()
1707 	struct uvc_video_chain *chain = handle->chain;  in __uvc_ctrl_commit()  local
1713 	list_for_each_entry(entity, &chain->entities, chain) {  in __uvc_ctrl_commit()
1714 		ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback,  in __uvc_ctrl_commit()
1726 	mutex_unlock(&chain->ctrl_mutex);  in __uvc_ctrl_commit()
1730 int uvc_ctrl_get(struct uvc_video_chain *chain,  in uvc_ctrl_get()  argument
1736 	if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)  in uvc_ctrl_get()
1739 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_get()
1743 	return __uvc_ctrl_get(chain, ctrl, mapping, &xctrl->value);  in uvc_ctrl_get()
1749 	struct uvc_video_chain *chain = handle->chain;  in uvc_ctrl_set()  local
1758 	if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)  in uvc_ctrl_set()
1761 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_set()
1771 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1811 				ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1835 		ret = __uvc_ctrl_load_cur(chain, ctrl);  in uvc_ctrl_set()
2015 int uvc_xu_ctrl_query(struct uvc_video_chain *chain,  in uvc_xu_ctrl_query()  argument
2029 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_xu_ctrl_query()
2038 		uvc_dbg(chain->dev, CONTROL, "Extension unit %u not found\n",  in uvc_xu_ctrl_query()
2054 		uvc_dbg(chain->dev, CONTROL, "Control %pUl/%u not found\n",  in uvc_xu_ctrl_query()
2059 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_xu_ctrl_query()
2062 	ret = uvc_ctrl_init_xu_ctrl(chain->dev, ctrl);  in uvc_xu_ctrl_query()
2124 	ret = uvc_query_ctrl(chain->dev, xqry->query, xqry->unit,  in uvc_xu_ctrl_query()
2125 			     chain->dev->intfnum, xqry->selector, data, size);  in uvc_xu_ctrl_query()
2134 	mutex_unlock(&chain->ctrl_mutex);  in uvc_xu_ctrl_query()
2213 static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,  in __uvc_ctrl_add_mapping()  argument
2256 			chain->ctrl_class_bitmap |= BIT(i);  in __uvc_ctrl_add_mapping()
2262 	uvc_dbg(chain->dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n",  in __uvc_ctrl_add_mapping()
2269 int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,  in uvc_ctrl_add_mapping()  argument
2272 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_add_mapping()
2286 	/* Search for the matching (GUID/CS) control on the current chain */  in uvc_ctrl_add_mapping()
2287 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_ctrl_add_mapping()
2308 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_ctrl_add_mapping()
2345 	ret = __uvc_ctrl_add_mapping(chain, ctrl, mapping);  in uvc_ctrl_add_mapping()
2350 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_add_mapping()
2421 static void uvc_ctrl_init_ctrl(struct uvc_video_chain *chain,  in uvc_ctrl_init_ctrl()  argument
2442 			uvc_ctrl_add_info(chain->dev, ctrl, info);  in uvc_ctrl_init_ctrl()
2449 			uvc_ctrl_get_flags(chain->dev, ctrl, &ctrl->info);  in uvc_ctrl_init_ctrl()
2464 	if (chain->dev->info->mappings) {  in uvc_ctrl_init_ctrl()
2467 		for (i = 0; chain->dev->info->mappings[i]; ++i) {  in uvc_ctrl_init_ctrl()
2469 				chain->dev->info->mappings[i];  in uvc_ctrl_init_ctrl()
2473 				__uvc_ctrl_add_mapping(chain, ctrl, mapping);  in uvc_ctrl_init_ctrl()
2488 			__uvc_ctrl_add_mapping(chain, ctrl, mapping);  in uvc_ctrl_init_ctrl()
2492 	if (chain->dev->uvc_version < 0x0150) {  in uvc_ctrl_init_ctrl()
2505 			__uvc_ctrl_add_mapping(chain, ctrl, mapping);  in uvc_ctrl_init_ctrl()
2512 static int uvc_ctrl_init_chain(struct uvc_video_chain *chain)  in uvc_ctrl_init_chain()  argument
2518 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_ctrl_init_chain()
2538 		uvc_ctrl_prune_entity(chain->dev, entity);  in uvc_ctrl_init_chain()
2560 			uvc_ctrl_init_ctrl(chain, ctrl);  in uvc_ctrl_init_chain()
2570 	struct uvc_video_chain *chain;  in uvc_ctrl_init_device()  local
2575 	list_for_each_entry(chain, &dev->chains, list) {  in uvc_ctrl_init_device()
2576 		ret = uvc_ctrl_init_chain(chain);  in uvc_ctrl_init_device()