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
|
/*
* diag.h - GPIO interface driver for Broadcom boards
*
* Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
* Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <linux/irq.h>
#define MODULE_NAME "diag"
#define MAX_GPIO 16
#define FLASH_TIME HZ/6
enum polarity_t {
REVERSE = 0,
NORMAL = 1,
INPUT = 2,
};
enum {
PROC_BUTTON,
PROC_LED,
PROC_MODEL,
PROC_GPIOMASK
};
struct prochandler_t {
int type;
void *ptr;
};
struct button_t {
struct prochandler_t proc;
char *name;
u32 gpio;
unsigned long seen;
u8 pressed;
};
struct led_t {
struct prochandler_t proc;
char *name;
u32 gpio;
u8 polarity;
u8 flash;
u8 state;
};
struct platform_t {
char *name;
struct button_t buttons[MAX_GPIO];
u32 button_mask;
u32 button_polarity;
void (*platform_init)(void);
struct led_t leds[MAX_GPIO];
};
struct event_t {
struct work_struct wq;
unsigned long seen;
char *name, *action;
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0)
struct sk_buff *skb;
#else
char *scratch;
char *argv[4];
char *envp[7];
u8 enr, anr;
#endif
};
extern char *nvram_get(char *str);
static struct platform_t platform;
/* buttons */
static void register_buttons(struct button_t *b);
static void unregister_buttons(struct button_t *b);
static void hotplug_button(struct work_struct *work);
static irqreturn_t button_handler(int irq, void *dev_id);
/* leds */
static void register_leds(struct led_t *l);
static void unregister_leds(struct led_t *l);
static void set_led_extif(struct led_t *led);
static void led_flash(unsigned long dummy);
/* 2.4 compatibility */
#ifndef TIMER_INITIALIZER
#define TIMER_INITIALIZER(_function, _expires, _data) \
{ \
/* _expires and _data currently unused */ \
function: _function \
}
#endif
static struct timer_list led_timer = TIMER_INITIALIZER(&led_flash, 0, 0);
/* proc */
static struct proc_dir_entry *diag, *leds;
static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos);
static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos);
static struct file_operations diag_proc_fops = {
read: diag_proc_read,
write: diag_proc_write
};
static struct prochandler_t proc_model = { .type = PROC_MODEL };
static struct prochandler_t proc_gpiomask = { .type = PROC_GPIOMASK };
|
