2 * LEDs driver for PCEngines ALIX 2/3 series
4 * Copyright (C) 2007 Petr Liebman
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/leds.h>
17 #include <linux/err.h>
20 #define DRVNAME "alix-led"
22 #define ALIX_LED1_PORT (0x6100)
23 #define ALIX_LED1_ON (1<<22)
24 #define ALIX_LED1_OFF (1<<6)
26 #define ALIX_LED2_PORT (0x6180)
27 #define ALIX_LED2_ON (1<<25)
28 #define ALIX_LED2_OFF (1<<9)
30 #define ALIX_LED3_PORT (0x6180)
31 #define ALIX_LED3_ON (1<<27)
32 #define ALIX_LED3_OFF (1<<11)
35 static struct platform_device *pdev;
37 static void alix_led_set_1(struct led_classdev *led_cdev,
38 enum led_brightness value)
41 outl(ALIX_LED1_ON, ALIX_LED1_PORT);
43 outl(ALIX_LED1_OFF, ALIX_LED1_PORT);
46 static void alix_led_set_2(struct led_classdev *led_cdev,
47 enum led_brightness value)
50 outl(ALIX_LED2_ON, ALIX_LED2_PORT);
52 outl(ALIX_LED2_OFF, ALIX_LED2_PORT);
55 static void alix_led_set_3(struct led_classdev *led_cdev,
56 enum led_brightness value)
59 outl(ALIX_LED3_ON, ALIX_LED3_PORT);
61 outl(ALIX_LED3_OFF, ALIX_LED3_PORT);
64 static struct led_classdev alix_led_1 = {
66 .brightness_set = alix_led_set_1,
69 static struct led_classdev alix_led_2 = {
71 .brightness_set = alix_led_set_2,
74 static struct led_classdev alix_led_3 = {
76 .brightness_set = alix_led_set_3,
81 static int alix_led_suspend(struct platform_device *dev,
84 led_classdev_suspend(&alix_led_1);
85 led_classdev_suspend(&alix_led_2);
86 led_classdev_suspend(&alix_led_3);
90 static int alix_led_resume(struct platform_device *dev)
92 led_classdev_resume(&alix_led_1);
93 led_classdev_resume(&alix_led_2);
94 led_classdev_resume(&alix_led_3);
98 #define alix_led_suspend NULL
99 #define alix_led_resume NULL
102 static int alix_led_probe(struct platform_device *pdev)
106 ret = led_classdev_register(&pdev->dev, &alix_led_1);
109 ret = led_classdev_register(&pdev->dev, &alix_led_2);
112 ret = led_classdev_register(&pdev->dev, &alix_led_3);
114 led_classdev_unregister(&alix_led_2);
117 led_classdev_unregister(&alix_led_1);
122 static int alix_led_remove(struct platform_device *pdev)
124 led_classdev_unregister(&alix_led_1);
125 led_classdev_unregister(&alix_led_2);
126 led_classdev_unregister(&alix_led_3);
130 static struct platform_driver alix_led_driver = {
131 .probe = alix_led_probe,
132 .remove = alix_led_remove,
133 .suspend = alix_led_suspend,
134 .resume = alix_led_resume,
137 .owner = THIS_MODULE,
141 static int __init alix_led_init(void)
145 ret = platform_driver_register(&alix_led_driver);
149 pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
152 platform_driver_unregister(&alix_led_driver);
160 static void __exit alix_led_exit(void)
162 platform_device_unregister(pdev);
163 platform_driver_unregister(&alix_led_driver);
166 module_init(alix_led_init);
167 module_exit(alix_led_exit);
169 MODULE_AUTHOR("Petr Liebman");
170 MODULE_DESCRIPTION("PCEngines ALIX LED driver");
171 MODULE_LICENSE("GPL");