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

 
 1/*
 2 * linux/drivers/leds/leds-locomo.c
 3 *
 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
11#include <linux/kernel.h>
12#include <linux/init.h>
 
13#include <linux/device.h>
14#include <linux/leds.h>
15
16#include <mach/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{
22	struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev->parent);
23	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:charge",
47	.default_trigger	= "main-battery-charging",
48	.brightness_set		= locomoled_brightness_set0,
49};
50
51static struct led_classdev locomo_led1 = {
52	.name			= "locomo:green:mail",
53	.default_trigger	= "nand-disk",
54	.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");