1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* linux/include/amba/bus.h
*
* This device type deals with ARM PrimeCells and anything else that
* presents a proper CID (0xB105F00D) at the end of the I/O register
* region or that is derived from a PrimeCell.
*
* Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef ASMARM_AMBA_H
#define ASMARM_AMBA_H
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/resource.h>
#include <linux/regulator/consumer.h>
#define AMBA_NR_IRQS 2
#define AMBA_CID 0xb105f00d
struct clk;
struct amba_device {
struct device dev;
struct resource res;
struct clk *pclk;
struct regulator *vcore;
u64 dma_mask;
unsigned int periphid;
unsigned int irq[AMBA_NR_IRQS];
};
struct amba_id {
unsigned int id;
unsigned int mask;
void *data;
};
struct amba_driver {
struct device_driver drv;
int (*probe)(struct amba_device *, const struct amba_id *);
int (*remove)(struct amba_device *);
void (*shutdown)(struct amba_device *);
int (*suspend)(struct amba_device *, pm_message_t);
int (*resume)(struct amba_device *);
const struct amba_id *id_table;
};
enum amba_vendor {
AMBA_VENDOR_ARM = 0x41,
AMBA_VENDOR_ST = 0x80,
};
extern struct bus_type amba_bustype;
#define to_amba_device(d) container_of(d, struct amba_device, dev)
#define amba_get_drvdata(d) dev_get_drvdata(&d->dev)
#define amba_set_drvdata(d,p) dev_set_drvdata(&d->dev, p)
int amba_driver_register(struct amba_driver *);
void amba_driver_unregister(struct amba_driver *);
int amba_device_register(struct amba_device *, struct resource *);
void amba_device_unregister(struct amba_device *);
struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int);
int amba_request_regions(struct amba_device *, const char *);
void amba_release_regions(struct amba_device *);
#define amba_pclk_enable(d) \
(IS_ERR((d)->pclk) ? 0 : clk_enable((d)->pclk))
#define amba_pclk_disable(d) \
do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0)
#define amba_vcore_enable(d) \
(IS_ERR((d)->vcore) ? 0 : regulator_enable((d)->vcore))
#define amba_vcore_disable(d) \
do { if (!IS_ERR((d)->vcore)) regulator_disable((d)->vcore); } while (0)
/* Some drivers don't use the struct amba_device */
#define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff)
#define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f)
#define AMBA_MANF_BITS(a) (((a) >> 12) & 0xff)
#define AMBA_PART_BITS(a) ((a) & 0xfff)
#define amba_config(d) AMBA_CONFIG_BITS((d)->periphid)
#define amba_rev(d) AMBA_REV_BITS((d)->periphid)
#define amba_manf(d) AMBA_MANF_BITS((d)->periphid)
#define amba_part(d) AMBA_PART_BITS((d)->periphid)
#ifdef CONFIG_PM_SLEEP
extern int amba_pm_prepare(struct device *dev);
extern void amba_pm_complete(struct device *dev);
#else
#define amba_pm_prepare NULL
#define amba_pm_complete NULL
#endif
#ifdef CONFIG_SUSPEND
extern int amba_pm_suspend(struct device *dev);
extern int amba_pm_suspend_noirq(struct device *dev);
extern int amba_pm_resume(struct device *dev);
extern int amba_pm_resume_noirq(struct device *dev);
#else
#define amba_pm_suspend NULL
#define amba_pm_resume NULL
#define amba_pm_suspend_noirq NULL
#define amba_pm_resume_noirq NULL
#endif
#ifdef CONFIG_HIBERNATE_CALLBACKS
extern int amba_pm_freeze(struct device *dev);
extern int amba_pm_freeze_noirq(struct device *dev);
extern int amba_pm_thaw(struct device *dev);
extern int amba_pm_thaw_noirq(struct device *dev);
extern int amba_pm_poweroff(struct device *dev);
extern int amba_pm_poweroff_noirq(struct device *dev);
extern int amba_pm_restore(struct device *dev);
extern int amba_pm_restore_noirq(struct device *dev);
#else
#define amba_pm_freeze NULL
#define amba_pm_thaw NULL
#define amba_pm_poweroff NULL
#define amba_pm_restore NULL
#define amba_pm_freeze_noirq NULL
#define amba_pm_thaw_noirq NULL
#define amba_pm_poweroff_noirq NULL
#define amba_pm_restore_noirq NULL
#endif
#ifdef CONFIG_PM_SLEEP
#define USE_AMBA_PM_SLEEP_OPS \
.prepare = amba_pm_prepare, \
.complete = amba_pm_complete, \
.suspend = amba_pm_suspend, \
.resume = amba_pm_resume, \
.freeze = amba_pm_freeze, \
.thaw = amba_pm_thaw, \
.poweroff = amba_pm_poweroff, \
.restore = amba_pm_restore, \
.suspend_noirq = amba_pm_suspend_noirq, \
.resume_noirq = amba_pm_resume_noirq, \
.freeze_noirq = amba_pm_freeze_noirq, \
.thaw_noirq = amba_pm_thaw_noirq, \
.poweroff_noirq = amba_pm_poweroff_noirq, \
.restore_noirq = amba_pm_restore_noirq,
#else
#define USE_AMBA_PM_SLEEP_OPS
#endif
#endif
|