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Tomasz Figa7366b922012-12-11 13:58:43 +09001/*
2 * Copyright (C) 2012 Samsung Electronics.
3 * Kyungmin Park <kyungmin.park@samsung.com>
4 * Tomasz Figa <t.figa@samsung.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#ifndef __ASM_ARM_FIRMWARE_H
12#define __ASM_ARM_FIRMWARE_H
13
14#include <linux/bug.h>
15
16/*
17 * struct firmware_ops
18 *
19 * A structure to specify available firmware operations.
20 *
21 * A filled up structure can be registered with register_firmware_ops().
22 */
23struct firmware_ops {
24 /*
Alexandre Courbotcd421452014-02-07 13:35:04 +090025 * Inform the firmware we intend to enter CPU idle mode
26 */
27 int (*prepare_idle)(void);
28 /*
Tomasz Figa7366b922012-12-11 13:58:43 +090029 * Enters CPU idle mode
30 */
31 int (*do_idle)(void);
32 /*
33 * Sets boot address of specified physical CPU
34 */
35 int (*set_cpu_boot_addr)(int cpu, unsigned long boot_addr);
36 /*
37 * Boots specified physical CPU
38 */
39 int (*cpu_boot)(int cpu);
40 /*
41 * Initializes L2 cache
42 */
43 int (*l2x0_init)(void);
Tomasz Figa9c261f82014-09-24 01:24:35 +090044 /*
45 * Enter system-wide suspend.
46 */
47 int (*suspend)(void);
48 /*
49 * Restore state of privileged hardware after system-wide suspend.
50 */
51 int (*resume)(void);
Tomasz Figa7366b922012-12-11 13:58:43 +090052};
53
54/* Global pointer for current firmware_ops structure, can't be NULL. */
55extern const struct firmware_ops *firmware_ops;
56
57/*
58 * call_firmware_op(op, ...)
59 *
60 * Checks if firmware operation is present and calls it,
61 * otherwise returns -ENOSYS
62 */
63#define call_firmware_op(op, ...) \
64 ((firmware_ops->op) ? firmware_ops->op(__VA_ARGS__) : (-ENOSYS))
65
66/*
67 * register_firmware_ops(ops)
68 *
69 * A function to register platform firmware_ops struct.
70 */
71static inline void register_firmware_ops(const struct firmware_ops *ops)
72{
73 BUG_ON(!ops);
74
75 firmware_ops = ops;
76}
77
78#endif