1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * linux/drivers/leds/leds-locomo.c
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu>
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/kernel.h>
9*4882a593Smuzhiyun #include <linux/init.h>
10*4882a593Smuzhiyun #include <linux/module.h>
11*4882a593Smuzhiyun #include <linux/device.h>
12*4882a593Smuzhiyun #include <linux/leds.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include <mach/hardware.h>
15*4882a593Smuzhiyun #include <asm/hardware/locomo.h>
16*4882a593Smuzhiyun
locomoled_brightness_set(struct led_classdev * led_cdev,enum led_brightness value,int offset)17*4882a593Smuzhiyun static void locomoled_brightness_set(struct led_classdev *led_cdev,
18*4882a593Smuzhiyun enum led_brightness value, int offset)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev->parent);
21*4882a593Smuzhiyun unsigned long flags;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun local_irq_save(flags);
24*4882a593Smuzhiyun if (value)
25*4882a593Smuzhiyun locomo_writel(LOCOMO_LPT_TOFH, locomo_dev->mapbase + offset);
26*4882a593Smuzhiyun else
27*4882a593Smuzhiyun locomo_writel(LOCOMO_LPT_TOFL, locomo_dev->mapbase + offset);
28*4882a593Smuzhiyun local_irq_restore(flags);
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun
locomoled_brightness_set0(struct led_classdev * led_cdev,enum led_brightness value)31*4882a593Smuzhiyun static void locomoled_brightness_set0(struct led_classdev *led_cdev,
32*4882a593Smuzhiyun enum led_brightness value)
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun locomoled_brightness_set(led_cdev, value, LOCOMO_LPT0);
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
locomoled_brightness_set1(struct led_classdev * led_cdev,enum led_brightness value)37*4882a593Smuzhiyun static void locomoled_brightness_set1(struct led_classdev *led_cdev,
38*4882a593Smuzhiyun enum led_brightness value)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun locomoled_brightness_set(led_cdev, value, LOCOMO_LPT1);
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun static struct led_classdev locomo_led0 = {
44*4882a593Smuzhiyun .name = "locomo:amber:charge",
45*4882a593Smuzhiyun .default_trigger = "main-battery-charging",
46*4882a593Smuzhiyun .brightness_set = locomoled_brightness_set0,
47*4882a593Smuzhiyun };
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun static struct led_classdev locomo_led1 = {
50*4882a593Smuzhiyun .name = "locomo:green:mail",
51*4882a593Smuzhiyun .default_trigger = "nand-disk",
52*4882a593Smuzhiyun .brightness_set = locomoled_brightness_set1,
53*4882a593Smuzhiyun };
54*4882a593Smuzhiyun
locomoled_probe(struct locomo_dev * ldev)55*4882a593Smuzhiyun static int locomoled_probe(struct locomo_dev *ldev)
56*4882a593Smuzhiyun {
57*4882a593Smuzhiyun int ret;
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun ret = devm_led_classdev_register(&ldev->dev, &locomo_led0);
60*4882a593Smuzhiyun if (ret < 0)
61*4882a593Smuzhiyun return ret;
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun return devm_led_classdev_register(&ldev->dev, &locomo_led1);
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun static struct locomo_driver locomoled_driver = {
68*4882a593Smuzhiyun .drv = {
69*4882a593Smuzhiyun .name = "locomoled"
70*4882a593Smuzhiyun },
71*4882a593Smuzhiyun .devid = LOCOMO_DEVID_LED,
72*4882a593Smuzhiyun .probe = locomoled_probe,
73*4882a593Smuzhiyun };
74*4882a593Smuzhiyun
locomoled_init(void)75*4882a593Smuzhiyun static int __init locomoled_init(void)
76*4882a593Smuzhiyun {
77*4882a593Smuzhiyun return locomo_driver_register(&locomoled_driver);
78*4882a593Smuzhiyun }
79*4882a593Smuzhiyun module_init(locomoled_init);
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
82*4882a593Smuzhiyun MODULE_DESCRIPTION("Locomo LED driver");
83*4882a593Smuzhiyun MODULE_LICENSE("GPL");
84