Commit | Line | Data |
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0d75565f KK |
1 | /* |
2 | * LEDs driver for PCEngines WRAP | |
3 | * | |
4 | * Copyright (C) 2006 Kristian Kielhofner <kris@krisk.org> | |
5 | * | |
6 | * Based on leds-net48xx.c | |
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 <linux/err.h> | |
572dc620 | 18 | #include <linux/io.h> |
0d75565f | 19 | #include <linux/scx200_gpio.h> |
54f4dedb | 20 | #include <linux/module.h> |
0d75565f KK |
21 | |
22 | #define DRVNAME "wrap-led" | |
f5506a2f | 23 | #define WRAP_POWER_LED_GPIO 2 |
0d75565f | 24 | #define WRAP_ERROR_LED_GPIO 3 |
f5506a2f | 25 | #define WRAP_EXTRA_LED_GPIO 18 |
0d75565f KK |
26 | |
27 | static struct platform_device *pdev; | |
28 | ||
f5506a2f ML |
29 | static void wrap_power_led_set(struct led_classdev *led_cdev, |
30 | enum led_brightness value) | |
31 | { | |
32 | if (value) | |
33 | scx200_gpio_set_low(WRAP_POWER_LED_GPIO); | |
34 | else | |
35 | scx200_gpio_set_high(WRAP_POWER_LED_GPIO); | |
36 | } | |
37 | ||
0d75565f KK |
38 | static void wrap_error_led_set(struct led_classdev *led_cdev, |
39 | enum led_brightness value) | |
40 | { | |
41 | if (value) | |
42 | scx200_gpio_set_low(WRAP_ERROR_LED_GPIO); | |
43 | else | |
44 | scx200_gpio_set_high(WRAP_ERROR_LED_GPIO); | |
45 | } | |
46 | ||
47 | static void wrap_extra_led_set(struct led_classdev *led_cdev, | |
48 | enum led_brightness value) | |
49 | { | |
50 | if (value) | |
51 | scx200_gpio_set_low(WRAP_EXTRA_LED_GPIO); | |
52 | else | |
53 | scx200_gpio_set_high(WRAP_EXTRA_LED_GPIO); | |
54 | } | |
55 | ||
f5506a2f | 56 | static struct led_classdev wrap_power_led = { |
6af4f55c SW |
57 | .name = "wrap::power", |
58 | .brightness_set = wrap_power_led_set, | |
59 | .default_trigger = "default-on", | |
859cb7f2 | 60 | .flags = LED_CORE_SUSPENDRESUME, |
f5506a2f ML |
61 | }; |
62 | ||
0d75565f | 63 | static struct led_classdev wrap_error_led = { |
6c152bee | 64 | .name = "wrap::error", |
0d75565f | 65 | .brightness_set = wrap_error_led_set, |
859cb7f2 | 66 | .flags = LED_CORE_SUSPENDRESUME, |
0d75565f KK |
67 | }; |
68 | ||
69 | static struct led_classdev wrap_extra_led = { | |
6c152bee | 70 | .name = "wrap::extra", |
0d75565f | 71 | .brightness_set = wrap_extra_led_set, |
859cb7f2 | 72 | .flags = LED_CORE_SUSPENDRESUME, |
0d75565f KK |
73 | }; |
74 | ||
0d75565f KK |
75 | static int wrap_led_probe(struct platform_device *pdev) |
76 | { | |
77 | int ret; | |
78 | ||
e9aadb86 | 79 | ret = devm_led_classdev_register(&pdev->dev, &wrap_power_led); |
f5506a2f ML |
80 | if (ret < 0) |
81 | return ret; | |
82 | ||
e9aadb86 | 83 | ret = devm_led_classdev_register(&pdev->dev, &wrap_error_led); |
f5506a2f | 84 | if (ret < 0) |
e9aadb86 | 85 | return ret; |
0d75565f | 86 | |
e9aadb86 | 87 | return devm_led_classdev_register(&pdev->dev, &wrap_extra_led); |
0d75565f KK |
88 | } |
89 | ||
90 | static struct platform_driver wrap_led_driver = { | |
91 | .probe = wrap_led_probe, | |
0d75565f KK |
92 | .driver = { |
93 | .name = DRVNAME, | |
0d75565f KK |
94 | }, |
95 | }; | |
96 | ||
97 | static int __init wrap_led_init(void) | |
98 | { | |
99 | int ret; | |
100 | ||
101 | if (!scx200_gpio_present()) { | |
102 | ret = -ENODEV; | |
103 | goto out; | |
104 | } | |
105 | ||
106 | ret = platform_driver_register(&wrap_led_driver); | |
107 | if (ret < 0) | |
108 | goto out; | |
109 | ||
110 | pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0); | |
111 | if (IS_ERR(pdev)) { | |
112 | ret = PTR_ERR(pdev); | |
113 | platform_driver_unregister(&wrap_led_driver); | |
114 | goto out; | |
115 | } | |
116 | ||
117 | out: | |
118 | return ret; | |
119 | } | |
120 | ||
121 | static void __exit wrap_led_exit(void) | |
122 | { | |
123 | platform_device_unregister(pdev); | |
124 | platform_driver_unregister(&wrap_led_driver); | |
125 | } | |
126 | ||
127 | module_init(wrap_led_init); | |
128 | module_exit(wrap_led_exit); | |
129 | ||
130 | MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>"); | |
131 | MODULE_DESCRIPTION("PCEngines WRAP LED driver"); | |
132 | MODULE_LICENSE("GPL"); | |
133 |