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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Backported definitions to support building with older kernels
*/
#ifndef __COMPAT_H
#define __COMPAT_H
#ifndef HID_CP_CONSUMER_CONTROL
#define HID_CP_CONSUMER_CONTROL 0x000c0001
#endif
#ifndef HID_GD_SYSTEM_CONTROL
#define HID_GD_SYSTEM_CONTROL 0x00010080
#endif
#ifndef module_hid_driver
/**
* module_hid_driver() - Helper macro for registering a HID driver
* @__hid_driver: hid_driver struct
*
* Helper macro for HID drivers which do not do anything special in module
* init/exit. This eliminates a lot of boilerplate. Each module may only
* use this macro once, and calling it replaces module_init() and module_exit()
*/
#define module_hid_driver(__hid_driver) \
module_driver(__hid_driver, hid_register_driver, \
hid_unregister_driver)
#endif
#ifndef from_timer
#define from_timer(var, callback_timer, timer_fieldname) \
container_of(callback_timer, typeof(*var), timer_fieldname)
#endif
/* If we're on an old kernel where setup_timer was still defined */
#ifdef setup_timer
/*
* Define a replacement of timer_setup found in newer kernels.
* NOTE Casting function pointers like this is a dirty hack,
* but will probably work, and should do for now.
*/
#define timer_setup(timer, callback, flags) \
__setup_timer((timer), (void (*)(unsigned long))(callback), \
(unsigned long)(timer), (flags))
#endif
#endif
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