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
158
159
160
161
162
163
164
165
166
167
168
|
/*
* drivers/leds/leds-h1940.c
* Copyright (c) Arnaud Patard <arnaud.patard@rtp-net.org>
*
* 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.
*
* H1940 leds driver
*
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/leds.h>
#include <asm/arch/regs-gpio.h>
#include <asm/arch/hardware.h>
#include <asm/arch/h1940-latch.h>
/*
* Green led.
*/
static void h1940_greenled_set(struct led_classdev *led_dev,
enum led_brightness value)
{
switch (value) {
case LED_HALF:
h1940_latch_control(0, H1940_LATCH_LED_FLASH);
s3c2410_gpio_setpin(S3C2410_GPA7, 1);
break;
case LED_FULL:
h1940_latch_control(0, H1940_LATCH_LED_GREEN);
s3c2410_gpio_setpin(S3C2410_GPA7, 1);
break;
default:
case LED_OFF:
h1940_latch_control(H1940_LATCH_LED_FLASH, 0);
h1940_latch_control(H1940_LATCH_LED_GREEN, 0);
s3c2410_gpio_setpin(S3C2410_GPA7, 0);
break;
}
}
static struct led_classdev h1940_greenled = {
.name = "h1940:green",
.brightness_set = h1940_greenled_set,
.default_trigger = "h1940-charger",
};
/*
* Red led.
*/
static void h1940_redled_set(struct led_classdev *led_dev,
enum led_brightness value)
{
switch (value) {
case LED_HALF:
h1940_latch_control(0, H1940_LATCH_LED_FLASH);
s3c2410_gpio_setpin(S3C2410_GPA1, 1);
break;
case LED_FULL:
h1940_latch_control(0, H1940_LATCH_LED_RED);
s3c2410_gpio_setpin(S3C2410_GPA1, 1);
break;
default:
case LED_OFF:
h1940_latch_control(H1940_LATCH_LED_FLASH, 0);
h1940_latch_control(H1940_LATCH_LED_RED, 0);
s3c2410_gpio_setpin(S3C2410_GPA1, 0);
break;
}
}
static struct led_classdev h1940_redled = {
.name = "h1940:red",
.brightness_set = h1940_redled_set,
.default_trigger = "h1940-charger",
};
/*
* Blue led.
* (it can only be blue flashing led)
*/
static void h1940_blueled_set(struct led_classdev *led_dev,
enum led_brightness value)
{
if (value) {
/* flashing Blue */
h1940_latch_control(0, H1940_LATCH_LED_FLASH);
s3c2410_gpio_setpin(S3C2410_GPA3, 1);
} else {
h1940_latch_control(H1940_LATCH_LED_FLASH, 0);
s3c2410_gpio_setpin(S3C2410_GPA3, 0);
}
}
static struct led_classdev h1940_blueled = {
.name = "h1940:blue",
.brightness_set = h1940_blueled_set,
.default_trigger = "h1940-bluetooth",
};
static int __init h1940leds_probe(struct platform_device *pdev)
{
int ret;
ret = led_classdev_register(&pdev->dev, &h1940_greenled);
if (ret)
goto err_green;
ret = led_classdev_register(&pdev->dev, &h1940_redled);
if (ret)
goto err_red;
ret = led_classdev_register(&pdev->dev, &h1940_blueled);
if (ret)
goto err_blue;
return 0;
err_blue:
led_classdev_unregister(&h1940_redled);
err_red:
led_classdev_unregister(&h1940_greenled);
err_green:
return ret;
}
static int h1940leds_remove(struct platform_device *pdev)
{
led_classdev_unregister(&h1940_greenled);
led_classdev_unregister(&h1940_redled);
led_classdev_unregister(&h1940_blueled);
return 0;
}
static struct platform_driver h1940leds_driver = {
.driver = {
.name = "h1940-leds",
.owner = THIS_MODULE,
},
.probe = h1940leds_probe,
.remove = h1940leds_remove,
};
static int __init h1940leds_init(void)
{
return platform_driver_register(&h1940leds_driver);
}
static void __exit h1940leds_exit(void)
{
platform_driver_unregister(&h1940leds_driver);
}
module_init(h1940leds_init);
module_exit(h1940leds_exit);
MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
MODULE_DESCRIPTION("LED driver for the iPAQ H1940");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:h1940-leds");
|
