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
|
/*
* arch/sh/boards/landisk/psw.c
*
* push switch support for LANDISK and USL-5P
*
* Copyright (C) 2006-2007 Paul Mundt
* Copyright (C) 2007 kogiidena
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/io.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <mach-landisk/mach/iodata_landisk.h>
#include <asm/push-switch.h>
static irqreturn_t psw_irq_handler(int irq, void *arg)
{
struct platform_device *pdev = arg;
struct push_switch *psw = platform_get_drvdata(pdev);
struct push_switch_platform_info *psw_info = pdev->dev.platform_data;
unsigned int sw_value;
int ret = 0;
sw_value = (0x0ff & (~__raw_readb(PA_STATUS)));
/* Nothing to do if there's no state change */
if (psw->state) {
ret = 1;
goto out;
}
/* Figure out who raised it */
if (sw_value & (1 << psw_info->bit)) {
psw->state = 1;
mod_timer(&psw->debounce, jiffies + 50);
ret = 1;
}
out:
/* Clear the switch IRQs */
__raw_writeb(0x00, PA_PWRINT_CLR);
return IRQ_RETVAL(ret);
}
static struct resource psw_power_resources[] = {
[0] = {
.start = IRQ_POWER,
.flags = IORESOURCE_IRQ,
},
};
static struct resource psw_usl5p_resources[] = {
[0] = {
.start = IRQ_BUTTON,
.flags = IORESOURCE_IRQ,
},
};
static struct push_switch_platform_info psw_power_platform_data = {
.name = "psw_power",
.bit = 4,
.irq_flags = IRQF_SHARED,
.irq_handler = psw_irq_handler,
};
static struct push_switch_platform_info psw1_platform_data = {
.name = "psw1",
.bit = 0,
.irq_flags = IRQF_SHARED,
.irq_handler = psw_irq_handler,
};
static struct push_switch_platform_info psw2_platform_data = {
.name = "psw2",
.bit = 2,
.irq_flags = IRQF_SHARED,
.irq_handler = psw_irq_handler,
};
static struct push_switch_platform_info psw3_platform_data = {
.name = "psw3",
.bit = 1,
.irq_flags = IRQF_SHARED,
.irq_handler = psw_irq_handler,
};
static struct platform_device psw_power_switch_device = {
.name = "push-switch",
.id = 0,
.num_resources = ARRAY_SIZE(psw_power_resources),
.resource = psw_power_resources,
.dev = {
.platform_data = &psw_power_platform_data,
},
};
static struct platform_device psw1_switch_device = {
.name = "push-switch",
.id = 1,
.num_resources = ARRAY_SIZE(psw_usl5p_resources),
.resource = psw_usl5p_resources,
.dev = {
.platform_data = &psw1_platform_data,
},
};
static struct platform_device psw2_switch_device = {
.name = "push-switch",
.id = 2,
.num_resources = ARRAY_SIZE(psw_usl5p_resources),
.resource = psw_usl5p_resources,
.dev = {
.platform_data = &psw2_platform_data,
},
};
static struct platform_device psw3_switch_device = {
.name = "push-switch",
.id = 3,
.num_resources = ARRAY_SIZE(psw_usl5p_resources),
.resource = psw_usl5p_resources,
.dev = {
.platform_data = &psw3_platform_data,
},
};
static struct platform_device *psw_devices[] = {
&psw_power_switch_device,
&psw1_switch_device,
&psw2_switch_device,
&psw3_switch_device,
};
static int __init psw_init(void)
{
return platform_add_devices(psw_devices, ARRAY_SIZE(psw_devices));
}
module_init(psw_init);
|
