/* SPDX-License-Identifier: GPL-2.0 */
/*
* u_tcm . h
*
* Utility definitions for the tcm function
*
* Copyright ( c ) 2015 Samsung Electronics Co . , Ltd .
* http : //www.samsung.com
*
* Author : Andrzej Pietrasiewicz < andrzej . p @ xxxxxxxxxxx >
*/
#ifndef U_TCM_H
#define U_TCM_H
#include <linux/usb/composite.h>
/**
* @ dependent : optional dependent module . Meant for legacy gadget .
* If non - null its refcount will be increased when a tpg is created and
* decreased when tpg is dropped .
* @ dep_lock : lock for dependent module operations .
* @ ready : true if the dependent module information is set .
* @ can_attach : true a function can be bound to gadget
* @ has_dep : true if there is a dependent module
*
*/
struct f_tcm_opts {
struct usb_function_instance func_inst;
struct module *dependent;
struct mutex dep_lock;
bool ready;
bool can_attach;
bool has_dep;
/*
* Callbacks to be removed when legacy tcm gadget disappears .
*
* If you use the new function registration interface
* programmatically , you MUST set these callbacks to
* something sensible ( e . g . probe / remove the composite ) .
*/
int (*tcm_register_callback)(struct usb_function_instance *);
void (*tcm_unregister_callback)(struct usb_function_instance *);
};
#endif /* U_TCM_H */
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