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