[SCSI] mpt2sas: sanity added to remove duplicate port from topology
[linux-2.6.git] / drivers / leds / leds-hp6xx.c
1 /*
2  * LED Triggers Core
3  * For the HP Jornada 620/660/680/690 handhelds
4  *
5  * Copyright 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com>
6  *     this driver is based on leds-spitz.c by Richard Purdie.
7  *
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.
11  */
12
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/leds.h>
17 #include <asm/hd64461.h>
18 #include <mach/hp6xx.h>
19
20 static void hp6xxled_green_set(struct led_classdev *led_cdev,
21                                enum led_brightness value)
22 {
23         u8 v8;
24
25         v8 = inb(PKDR);
26         if (value)
27                 outb(v8 & (~PKDR_LED_GREEN), PKDR);
28         else
29                 outb(v8 | PKDR_LED_GREEN, PKDR);
30 }
31
32 static void hp6xxled_red_set(struct led_classdev *led_cdev,
33                              enum led_brightness value)
34 {
35         u16 v16;
36
37         v16 = inw(HD64461_GPBDR);
38         if (value)
39                 outw(v16 & (~HD64461_GPBDR_LED_RED), HD64461_GPBDR);
40         else
41                 outw(v16 | HD64461_GPBDR_LED_RED, HD64461_GPBDR);
42 }
43
44 static struct led_classdev hp6xx_red_led = {
45         .name                   = "hp6xx:red",
46         .default_trigger        = "hp6xx-charge",
47         .brightness_set         = hp6xxled_red_set,
48         .flags                  = LED_CORE_SUSPENDRESUME,
49 };
50
51 static struct led_classdev hp6xx_green_led = {
52         .name                   = "hp6xx:green",
53         .default_trigger        = "ide-disk",
54         .brightness_set         = hp6xxled_green_set,
55         .flags                  = LED_CORE_SUSPENDRESUME,
56 };
57
58 static int hp6xxled_probe(struct platform_device *pdev)
59 {
60         int ret;
61
62         ret = led_classdev_register(&pdev->dev, &hp6xx_red_led);
63         if (ret < 0)
64                 return ret;
65
66         ret = led_classdev_register(&pdev->dev, &hp6xx_green_led);
67         if (ret < 0)
68                 led_classdev_unregister(&hp6xx_red_led);
69
70         return ret;
71 }
72
73 static int hp6xxled_remove(struct platform_device *pdev)
74 {
75         led_classdev_unregister(&hp6xx_red_led);
76         led_classdev_unregister(&hp6xx_green_led);
77
78         return 0;
79 }
80
81 /* work with hotplug and coldplug */
82 MODULE_ALIAS("platform:hp6xx-led");
83
84 static struct platform_driver hp6xxled_driver = {
85         .probe          = hp6xxled_probe,
86         .remove         = hp6xxled_remove,
87         .driver         = {
88                 .name           = "hp6xx-led",
89                 .owner          = THIS_MODULE,
90         },
91 };
92
93 static int __init hp6xxled_init(void)
94 {
95         return platform_driver_register(&hp6xxled_driver);
96 }
97
98 static void __exit hp6xxled_exit(void)
99 {
100         platform_driver_unregister(&hp6xxled_driver);
101 }
102
103 module_init(hp6xxled_init);
104 module_exit(hp6xxled_exit);
105
106 MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
107 MODULE_DESCRIPTION("HP Jornada 6xx LED driver");
108 MODULE_LICENSE("GPL");