12e759738SNishad Kamdar /* SPDX-License-Identifier: GPL-2.0 */ 2dc8c46a5SAndrzej Pietrasiewicz /* 3dc8c46a5SAndrzej Pietrasiewicz * u_tcm.h 4dc8c46a5SAndrzej Pietrasiewicz * 5dc8c46a5SAndrzej Pietrasiewicz * Utility definitions for the tcm function 6dc8c46a5SAndrzej Pietrasiewicz * 7dc8c46a5SAndrzej Pietrasiewicz * Copyright (c) 2015 Samsung Electronics Co., Ltd. 8dc8c46a5SAndrzej Pietrasiewicz * http://www.samsung.com 9dc8c46a5SAndrzej Pietrasiewicz * 10dc8c46a5SAndrzej Pietrasiewicz * Author: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx> 11dc8c46a5SAndrzej Pietrasiewicz */ 12dc8c46a5SAndrzej Pietrasiewicz 13dc8c46a5SAndrzej Pietrasiewicz #ifndef U_TCM_H 14dc8c46a5SAndrzej Pietrasiewicz #define U_TCM_H 15dc8c46a5SAndrzej Pietrasiewicz 16dc8c46a5SAndrzej Pietrasiewicz #include <linux/usb/composite.h> 17dc8c46a5SAndrzej Pietrasiewicz 18dc8c46a5SAndrzej Pietrasiewicz /** 19dc8c46a5SAndrzej Pietrasiewicz * @dependent: optional dependent module. Meant for legacy gadget. 20dc8c46a5SAndrzej Pietrasiewicz * If non-null its refcount will be increased when a tpg is created and 21dc8c46a5SAndrzej Pietrasiewicz * decreased when tpg is dropped. 22dc8c46a5SAndrzej Pietrasiewicz * @dep_lock: lock for dependent module operations. 23dc8c46a5SAndrzej Pietrasiewicz * @ready: true if the dependent module information is set. 24dc8c46a5SAndrzej Pietrasiewicz * @can_attach: true a function can be bound to gadget 25dc8c46a5SAndrzej Pietrasiewicz * @has_dep: true if there is a dependent module 26dc8c46a5SAndrzej Pietrasiewicz * 27dc8c46a5SAndrzej Pietrasiewicz */ 28dc8c46a5SAndrzej Pietrasiewicz struct f_tcm_opts { 29dc8c46a5SAndrzej Pietrasiewicz struct usb_function_instance func_inst; 30dc8c46a5SAndrzej Pietrasiewicz struct module *dependent; 31dc8c46a5SAndrzej Pietrasiewicz struct mutex dep_lock; 32dc8c46a5SAndrzej Pietrasiewicz bool ready; 33dc8c46a5SAndrzej Pietrasiewicz bool can_attach; 34dc8c46a5SAndrzej Pietrasiewicz bool has_dep; 35dc8c46a5SAndrzej Pietrasiewicz 36dc8c46a5SAndrzej Pietrasiewicz /* 37dc8c46a5SAndrzej Pietrasiewicz * Callbacks to be removed when legacy tcm gadget disappears. 38dc8c46a5SAndrzej Pietrasiewicz * 39dc8c46a5SAndrzej Pietrasiewicz * If you use the new function registration interface 40dc8c46a5SAndrzej Pietrasiewicz * programmatically, you MUST set these callbacks to 41dc8c46a5SAndrzej Pietrasiewicz * something sensible (e.g. probe/remove the composite). 42dc8c46a5SAndrzej Pietrasiewicz */ 43dc8c46a5SAndrzej Pietrasiewicz int (*tcm_register_callback)(struct usb_function_instance *); 44dc8c46a5SAndrzej Pietrasiewicz void (*tcm_unregister_callback)(struct usb_function_instance *); 45dc8c46a5SAndrzej Pietrasiewicz }; 46dc8c46a5SAndrzej Pietrasiewicz 47dc8c46a5SAndrzej Pietrasiewicz #endif /* U_TCM_H */ 48