blob: 2207335e9212e97b64a05bdd290819ceee83a89d [file] [log] [blame]
Richard Purdie4d3cb352006-03-31 02:31:10 -08001/*
Uwe Zeisbergerf30c2262006-10-03 23:01:26 +02002 * linux/drivers/leds/leds-locomo.c
Richard Purdie4d3cb352006-03-31 02:31:10 -08003 *
4 * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
Richard Purdie4d3cb352006-03-31 02:31:10 -080011#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/device.h>
14#include <linux/leds.h>
15
16#include <asm/hardware.h>
17#include <asm/hardware/locomo.h>
18
19static void locomoled_brightness_set(struct led_classdev *led_cdev,
20 enum led_brightness value, int offset)
21{
Richard Purdie8f115cd2007-12-31 23:11:11 +000022 struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev->parent);
Richard Purdie4d3cb352006-03-31 02:31:10 -080023 unsigned long flags;
24
25 local_irq_save(flags);
26 if (value)
27 locomo_writel(LOCOMO_LPT_TOFH, locomo_dev->mapbase + offset);
28 else
29 locomo_writel(LOCOMO_LPT_TOFL, locomo_dev->mapbase + offset);
30 local_irq_restore(flags);
31}
32
33static void locomoled_brightness_set0(struct led_classdev *led_cdev,
34 enum led_brightness value)
35{
36 locomoled_brightness_set(led_cdev, value, LOCOMO_LPT0);
37}
38
39static void locomoled_brightness_set1(struct led_classdev *led_cdev,
40 enum led_brightness value)
41{
42 locomoled_brightness_set(led_cdev, value, LOCOMO_LPT1);
43}
44
45static struct led_classdev locomo_led0 = {
46 .name = "locomo:amber",
Richard Purdieb7408af2006-06-19 13:08:39 +010047 .default_trigger = "sharpsl-charge",
Richard Purdie4d3cb352006-03-31 02:31:10 -080048 .brightness_set = locomoled_brightness_set0,
49};
50
51static struct led_classdev locomo_led1 = {
52 .name = "locomo:green",
Richard Purdieb7408af2006-06-19 13:08:39 +010053 .default_trigger = "nand-disk",
Richard Purdie4d3cb352006-03-31 02:31:10 -080054 .brightness_set = locomoled_brightness_set1,
55};
56
57static int locomoled_probe(struct locomo_dev *ldev)
58{
59 int ret;
60
61 ret = led_classdev_register(&ldev->dev, &locomo_led0);
62 if (ret < 0)
63 return ret;
64
65 ret = led_classdev_register(&ldev->dev, &locomo_led1);
66 if (ret < 0)
67 led_classdev_unregister(&locomo_led0);
68
69 return ret;
70}
71
72static int locomoled_remove(struct locomo_dev *dev)
73{
74 led_classdev_unregister(&locomo_led0);
75 led_classdev_unregister(&locomo_led1);
76 return 0;
77}
78
79static struct locomo_driver locomoled_driver = {
80 .drv = {
81 .name = "locomoled"
82 },
83 .devid = LOCOMO_DEVID_LED,
84 .probe = locomoled_probe,
85 .remove = locomoled_remove,
86};
87
88static int __init locomoled_init(void)
89{
90 return locomo_driver_register(&locomoled_driver);
91}
92module_init(locomoled_init);
93
94MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
95MODULE_DESCRIPTION("Locomo LED driver");
96MODULE_LICENSE("GPL");