summaryrefslogtreecommitdiff
path: root/drivers/leds/leds-ams-delta.c
blob: 8c00937bf7e74d02bc1759cbab01ca6eba1bc13e (plain) (blame)
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
/*
 * LEDs driver for Amstrad Delta (E3)
 *
 * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
 *
 * 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.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <plat/board-ams-delta.h>

/*
 * Our context
 */
struct ams_delta_led {
	struct led_classdev	cdev;
	u8			bitmask;
};

static void ams_delta_led_set(struct led_classdev *led_cdev,
		enum led_brightness value)
{
	struct ams_delta_led *led_dev =
		container_of(led_cdev, struct ams_delta_led, cdev);

	if (value)
		ams_delta_latch1_write(led_dev->bitmask, led_dev->bitmask);
	else
		ams_delta_latch1_write(led_dev->bitmask, 0);
}

static struct ams_delta_led ams_delta_leds[] = {
	{
		.cdev		= {
			.name		= "ams-delta::camera",
			.brightness_set = ams_delta_led_set,
		},
		.bitmask	= AMS_DELTA_LATCH1_LED_CAMERA,
	},
	{
		.cdev		= {
			.name		= "ams-delta::advert",
			.brightness_set = ams_delta_led_set,
		},
		.bitmask	= AMS_DELTA_LATCH1_LED_ADVERT,
	},
	{
		.cdev		= {
			.name		= "ams-delta::email",
			.brightness_set = ams_delta_led_set,
		},
		.bitmask	= AMS_DELTA_LATCH1_LED_EMAIL,
	},
	{
		.cdev		= {
			.name		= "ams-delta::handsfree",
			.brightness_set = ams_delta_led_set,
		},
		.bitmask	= AMS_DELTA_LATCH1_LED_HANDSFREE,
	},
	{
		.cdev		= {
			.name		= "ams-delta::voicemail",
			.brightness_set = ams_delta_led_set,
		},
		.bitmask	= AMS_DELTA_LATCH1_LED_VOICEMAIL,
	},
	{
		.cdev		= {
			.name		= "ams-delta::voice",
			.brightness_set = ams_delta_led_set,
		},
		.bitmask	= AMS_DELTA_LATCH1_LED_VOICE,
	},
};

static int ams_delta_led_probe(struct platform_device *pdev)
{
	int i, ret;

	for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i++) {
		ams_delta_leds[i].cdev.flags |= LED_CORE_SUSPENDRESUME;
		ret = led_classdev_register(&pdev->dev,
				&ams_delta_leds[i].cdev);
		if (ret < 0)
			goto fail;
	}

	return 0;
fail:
	while (--i >= 0)
		led_classdev_unregister(&ams_delta_leds[i].cdev);
	return ret;	
}

static int ams_delta_led_remove(struct platform_device *pdev)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i++)
		led_classdev_unregister(&ams_delta_leds[i].cdev);

	return 0;
}

static struct platform_driver ams_delta_led_driver = {
	.probe		= ams_delta_led_probe,
	.remove		= ams_delta_led_remove,
	.driver		= {
		.name = "ams-delta-led",
		.owner = THIS_MODULE,
	},
};

static int __init ams_delta_led_init(void)
{
	return platform_driver_register(&ams_delta_led_driver);
}

static void __exit ams_delta_led_exit(void)
{
	platform_driver_unregister(&ams_delta_led_driver);
}

module_init(ams_delta_led_init);
module_exit(ams_delta_led_exit);

MODULE_AUTHOR("Jonathan McDowell <noodles@earth.li>");
MODULE_DESCRIPTION("Amstrad Delta LED driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:ams-delta-led");