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8#include <linux/kernel.h>
9#include <linux/init.h>
10#include <linux/module.h>
11#include <linux/device.h>
12#include <linux/leds.h>
13
14#include <mach/hardware.h>
15#include <asm/hardware/locomo.h>
16
17static void locomoled_brightness_set(struct led_classdev *led_cdev,
18 enum led_brightness value, int offset)
19{
20 struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev->parent);
21 unsigned long flags;
22
23 local_irq_save(flags);
24 if (value)
25 locomo_writel(LOCOMO_LPT_TOFH, locomo_dev->mapbase + offset);
26 else
27 locomo_writel(LOCOMO_LPT_TOFL, locomo_dev->mapbase + offset);
28 local_irq_restore(flags);
29}
30
31static void locomoled_brightness_set0(struct led_classdev *led_cdev,
32 enum led_brightness value)
33{
34 locomoled_brightness_set(led_cdev, value, LOCOMO_LPT0);
35}
36
37static void locomoled_brightness_set1(struct led_classdev *led_cdev,
38 enum led_brightness value)
39{
40 locomoled_brightness_set(led_cdev, value, LOCOMO_LPT1);
41}
42
43static struct led_classdev locomo_led0 = {
44 .name = "locomo:amber:charge",
45 .default_trigger = "main-battery-charging",
46 .brightness_set = locomoled_brightness_set0,
47};
48
49static struct led_classdev locomo_led1 = {
50 .name = "locomo:green:mail",
51 .default_trigger = "nand-disk",
52 .brightness_set = locomoled_brightness_set1,
53};
54
55static int locomoled_probe(struct locomo_dev *ldev)
56{
57 int ret;
58
59 ret = devm_led_classdev_register(&ldev->dev, &locomo_led0);
60 if (ret < 0)
61 return ret;
62
63 return devm_led_classdev_register(&ldev->dev, &locomo_led1);
64}
65
66
67static struct locomo_driver locomoled_driver = {
68 .drv = {
69 .name = "locomoled"
70 },
71 .devid = LOCOMO_DEVID_LED,
72 .probe = locomoled_probe,
73};
74
75static int __init locomoled_init(void)
76{
77 return locomo_driver_register(&locomoled_driver);
78}
79module_init(locomoled_init);
80
81MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
82MODULE_DESCRIPTION("Locomo LED driver");
83MODULE_LICENSE("GPL");
84