1 /*
2 * LED Triggers Core
3 *
4 * Copyright 2005-2006 Openedhand Ltd.
5 *
6 * Author: Richard Purdie <rpurdie@openedhand.com>
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
14 #include <linux/config.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/leds.h>
19 #include <asm/hardware/scoop.h>
20 #include <asm/mach-types.h>
21 #include <asm/arch/hardware.h>
22 #include <asm/arch/pxa-regs.h>
23 #include <asm/arch/spitz.h>
24
25 static void spitzled_amber_set(struct led_classdev *led_cdev, enum led_brightness value)
26 {
27 if (value)
28 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);
29 else
30 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);
31 }
32
33 static void spitzled_green_set(struct led_classdev *led_cdev, enum led_brightness value)
34 {
35 if (value)
36 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
37 else
38 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
39 }
40
41 static struct led_classdev spitz_amber_led = {
42 .name = "spitz:amber",
43 .default_trigger = "sharpsl-charge",
44 .brightness_set = spitzled_amber_set,
45 };
46
47 static struct led_classdev spitz_green_led = {
48 .name = "spitz:green",
49 .default_trigger = "ide-disk",
50 .brightness_set = spitzled_green_set,
51 };
52
53 #ifdef CONFIG_PM
54 static int spitzled_suspend(struct platform_device *dev, pm_message_t state)
55 {
56 #ifdef CONFIG_LEDS_TRIGGERS
57 if (spitz_amber_led.trigger && strcmp(spitz_amber_led.trigger->name, "sharpsl-charge"))
58 #endif
59 led_classdev_suspend(&spitz_amber_led);
60 led_classdev_suspend(&spitz_green_led);
61 return 0;
62 }
63
64 static int spitzled_resume(struct platform_device *dev)
65 {
66 led_classdev_resume(&spitz_amber_led);
67 led_classdev_resume(&spitz_green_led);
68 return 0;
69 }
70 #endif
71
72 static int spitzled_probe(struct platform_device *pdev)
73 {
74 int ret;
75
76 if (machine_is_akita())
77 spitz_green_led.default_trigger = "nand-disk";
78
79 ret = led_classdev_register(&pdev->dev, &spitz_amber_led);
80 if (ret < 0)
81 return ret;
82
83 ret = led_classdev_register(&pdev->dev, &spitz_green_led);
84 if (ret < 0)
85 led_classdev_unregister(&spitz_amber_led);
86
87 return ret;
88 }
89
90 static int spitzled_remove(struct platform_device *pdev)
91 {
92 led_classdev_unregister(&spitz_amber_led);
93 led_classdev_unregister(&spitz_green_led);
94
95 return 0;
96 }
97
98 static struct platform_driver spitzled_driver = {
99 .probe = spitzled_probe,
100 .remove = spitzled_remove,
101 #ifdef CONFIG_PM
102 .suspend = spitzled_suspend,
103 .resume = spitzled_resume,
104 #endif
105 .driver = {
106 .name = "spitz-led",
107 },
108 };
109
110 static int __init spitzled_init(void)
111 {
112 return platform_driver_register(&spitzled_driver);
113 }
114
115 static void __exit spitzled_exit(void)
116 {
117 platform_driver_unregister(&spitzled_driver);
118 }
119
120 module_init(spitzled_init);
121 module_exit(spitzled_exit);
122
123 MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
124 MODULE_DESCRIPTION("Spitz LED driver");
125 MODULE_LICENSE("GPL");
126
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