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
|
/*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Copyright (C) 2012 ARM Limited
*/
#ifndef _LINUX_VEXPRESS_H
#define _LINUX_VEXPRESS_H
#include <linux/device.h>
#define VEXPRESS_SITE_MB 0
#define VEXPRESS_SITE_DB1 1
#define VEXPRESS_SITE_DB2 2
#define VEXPRESS_SITE_MASTER 0xf
#define VEXPRESS_CONFIG_STATUS_DONE 0
#define VEXPRESS_CONFIG_STATUS_WAIT 1
#define VEXPRESS_GPIO_MMC_CARDIN 0
#define VEXPRESS_GPIO_MMC_WPROT 1
#define VEXPRESS_GPIO_FLASH_WPn 2
#define VEXPRESS_RES_FUNC(_site, _func) \
{ \
.start = (_site), \
.end = (_func), \
.flags = IORESOURCE_BUS, \
}
/* Config bridge API */
/**
* struct vexpress_config_bridge_info - description of the platform
* configuration infrastructure bridge.
*
* @name: Bridge name
*
* @func_get: Obtains pointer to a configuration function for a given
* device or a Device Tree node, to be used with @func_put
* and @func_exec. The node pointer should take precedence
* over device pointer when both are passed.
*
* @func_put: Tells the bridge that the function will not be used any
* more, so all allocated resources can be released.
*
* @func_exec: Executes a configuration function read or write operation.
* The offset selects a 32 bit word of the value accessed.
* Must return VEXPRESS_CONFIG_STATUS_DONE when operation
* is finished immediately, VEXPRESS_CONFIG_STATUS_WAIT when
* will be completed in some time or negative value in case
* of error.
*/
struct vexpress_config_bridge_info {
const char *name;
void *(*func_get)(struct device *dev, struct device_node *node);
void (*func_put)(void *func);
int (*func_exec)(void *func, int offset, bool write, u32 *data);
};
struct vexpress_config_bridge;
struct vexpress_config_bridge *vexpress_config_bridge_register(
struct device_node *node,
struct vexpress_config_bridge_info *info);
void vexpress_config_bridge_unregister(struct vexpress_config_bridge *bridge);
void vexpress_config_complete(struct vexpress_config_bridge *bridge,
int status);
/* Config function API */
struct vexpress_config_func;
struct vexpress_config_func *__vexpress_config_func_get(struct device *dev,
struct device_node *node);
#define vexpress_config_func_get_by_dev(dev) \
__vexpress_config_func_get(dev, NULL)
#define vexpress_config_func_get_by_node(node) \
__vexpress_config_func_get(NULL, node)
void vexpress_config_func_put(struct vexpress_config_func *func);
/* Both may sleep! */
int vexpress_config_read(struct vexpress_config_func *func, int offset,
u32 *data);
int vexpress_config_write(struct vexpress_config_func *func, int offset,
u32 data);
/* Platform control */
u32 vexpress_get_procid(int site);
u32 vexpress_get_hbi(int site);
void *vexpress_get_24mhz_clock_base(void);
void vexpress_flags_set(u32 data);
#define vexpress_get_site_by_node(node) __vexpress_get_site(NULL, node)
#define vexpress_get_site_by_dev(dev) __vexpress_get_site(dev, NULL)
unsigned __vexpress_get_site(struct device *dev, struct device_node *node);
void vexpress_sysreg_early_init(void __iomem *base);
void vexpress_sysreg_of_early_init(void);
#endif
|