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3696a8a4 MR |
1 | /* |
2 | * drivers/leds/leds-cm-x270.c | |
3 | * | |
4 | * Copyright 2007 CompuLab Ltd. | |
5 | * Author: Mike Rapoport <mike@compulab.co.il> | |
6 | * | |
7 | * Based on leds-corgi.c | |
8 | * Author: Richard Purdie <rpurdie@openedhand.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <linux/kernel.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/platform_device.h> | |
19 | #include <linux/leds.h> | |
20 | ||
a09e64fb RK |
21 | #include <mach/hardware.h> |
22 | #include <mach/pxa-regs.h> | |
3696a8a4 MR |
23 | |
24 | #define GPIO_RED_LED (93) | |
25 | #define GPIO_GREEN_LED (94) | |
26 | ||
27 | static void cmx270_red_set(struct led_classdev *led_cdev, | |
28 | enum led_brightness value) | |
29 | { | |
30 | if (value) | |
31 | GPCR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED); | |
32 | else | |
33 | GPSR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED); | |
34 | } | |
35 | ||
36 | static void cmx270_green_set(struct led_classdev *led_cdev, | |
37 | enum led_brightness value) | |
38 | { | |
39 | if (value) | |
40 | GPCR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED); | |
41 | else | |
42 | GPSR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED); | |
43 | } | |
44 | ||
45 | static struct led_classdev cmx270_red_led = { | |
46 | .name = "cm-x270:red", | |
47 | .default_trigger = "nand-disk", | |
48 | .brightness_set = cmx270_red_set, | |
49 | }; | |
50 | ||
51 | static struct led_classdev cmx270_green_led = { | |
52 | .name = "cm-x270:green", | |
53 | .default_trigger = "heartbeat", | |
54 | .brightness_set = cmx270_green_set, | |
55 | }; | |
56 | ||
57 | #ifdef CONFIG_PM | |
58 | static int cmx270led_suspend(struct platform_device *dev, pm_message_t state) | |
59 | { | |
60 | led_classdev_suspend(&cmx270_red_led); | |
61 | led_classdev_suspend(&cmx270_green_led); | |
62 | return 0; | |
63 | } | |
64 | ||
65 | static int cmx270led_resume(struct platform_device *dev) | |
66 | { | |
67 | led_classdev_resume(&cmx270_red_led); | |
68 | led_classdev_resume(&cmx270_green_led); | |
69 | return 0; | |
70 | } | |
71 | #endif | |
72 | ||
73 | static int cmx270led_probe(struct platform_device *pdev) | |
74 | { | |
75 | int ret; | |
76 | ||
77 | ret = led_classdev_register(&pdev->dev, &cmx270_red_led); | |
78 | if (ret < 0) | |
79 | return ret; | |
80 | ||
81 | ret = led_classdev_register(&pdev->dev, &cmx270_green_led); | |
82 | if (ret < 0) | |
83 | led_classdev_unregister(&cmx270_red_led); | |
84 | ||
85 | return ret; | |
86 | } | |
87 | ||
88 | static int cmx270led_remove(struct platform_device *pdev) | |
89 | { | |
90 | led_classdev_unregister(&cmx270_red_led); | |
91 | led_classdev_unregister(&cmx270_green_led); | |
92 | return 0; | |
93 | } | |
94 | ||
95 | static struct platform_driver cmx270led_driver = { | |
96 | .probe = cmx270led_probe, | |
97 | .remove = cmx270led_remove, | |
98 | #ifdef CONFIG_PM | |
99 | .suspend = cmx270led_suspend, | |
100 | .resume = cmx270led_resume, | |
101 | #endif | |
102 | .driver = { | |
103 | .name = "cm-x270-led", | |
3c4ded97 | 104 | .owner = THIS_MODULE, |
3696a8a4 MR |
105 | }, |
106 | }; | |
107 | ||
108 | static int __init cmx270led_init(void) | |
109 | { | |
110 | return platform_driver_register(&cmx270led_driver); | |
111 | } | |
112 | ||
113 | static void __exit cmx270led_exit(void) | |
114 | { | |
115 | platform_driver_unregister(&cmx270led_driver); | |
116 | } | |
117 | ||
118 | module_init(cmx270led_init); | |
119 | module_exit(cmx270led_exit); | |
120 | ||
121 | MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); | |
122 | MODULE_DESCRIPTION("CM-x270 LED driver"); | |
123 | MODULE_LICENSE("GPL"); | |
3c4ded97 | 124 | MODULE_ALIAS("platform:cm-x270-led"); |