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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2012 Samsung Electronics.
* Kyungmin Park <kyungmin.park@samsung.com>
* Tomasz Figa <t.figa@samsung.com>
*/
#ifndef __ASM_ARM_FIRMWARE_H
#define __ASM_ARM_FIRMWARE_H
#include <linux/bug.h>
/*
* struct firmware_ops
*
* A structure to specify available firmware operations.
*
* A filled up structure can be registered with register_firmware_ops().
*/
struct firmware_ops {
/*
* Inform the firmware we intend to enter CPU idle mode
*/
int (*prepare_idle)(unsigned long mode);
/*
* Enters CPU idle mode
*/
int (*do_idle)(unsigned long mode);
/*
* Sets boot address of specified physical CPU
*/
int (*set_cpu_boot_addr)(int cpu, unsigned long boot_addr);
/*
* Gets boot address of specified physical CPU
*/
int (*get_cpu_boot_addr)(int cpu, unsigned long *boot_addr);
/*
* Boots specified physical CPU
*/
int (*cpu_boot)(int cpu);
/*
* Initializes L2 cache
*/
int (*l2x0_init)(void);
/*
* Enter system-wide suspend.
*/
int (*suspend)(void);
/*
* Restore state of privileged hardware after system-wide suspend.
*/
int (*resume)(void);
};
/* Global pointer for current firmware_ops structure, can't be NULL. */
extern const struct firmware_ops *firmware_ops;
/*
* call_firmware_op(op, ...)
*
* Checks if firmware operation is present and calls it,
* otherwise returns -ENOSYS
*/
#define call_firmware_op(op, ...) \
((firmware_ops->op) ? firmware_ops->op(__VA_ARGS__) : (-ENOSYS))
/*
* register_firmware_ops(ops)
*
* A function to register platform firmware_ops struct.
*/
static inline void register_firmware_ops(const struct firmware_ops *ops)
{
BUG_ON(!ops);
firmware_ops = ops;
}
#endif