git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 18 | #include <asm/io.h> | |
| 19 | #include <linux/scx200_gpio.h> | |
| 20 | ||
| 21 | #define DRVNAME "wrap-led" | |
| f5506a2f | 22 | #define WRAP_POWER_LED_GPIO 2 |
| 0d75565f | 23 | #define WRAP_ERROR_LED_GPIO 3 |
| f5506a2f | 24 | #define WRAP_EXTRA_LED_GPIO 18 |
| 0d75565f KK |
25 | |
| 26 | static struct platform_device *pdev; | |
| 27 | ||
| f5506a2f ML |
28 | static void wrap_power_led_set(struct led_classdev *led_cdev, |
| 29 | enum led_brightness value) | |
| 30 | { | |
| 31 | if (value) | |
| 32 | scx200_gpio_set_low(WRAP_POWER_LED_GPIO); | |
| 33 | else | |
| 34 | scx200_gpio_set_high(WRAP_POWER_LED_GPIO); | |
| 35 | } | |
| 36 | ||
| 0d75565f KK |
37 | static void wrap_error_led_set(struct led_classdev *led_cdev, |
| 38 | enum led_brightness value) | |
| 39 | { | |
| 40 | if (value) | |
| 41 | scx200_gpio_set_low(WRAP_ERROR_LED_GPIO); | |
| 42 | else | |
| 43 | scx200_gpio_set_high(WRAP_ERROR_LED_GPIO); | |
| 44 | } | |
| 45 | ||
| 46 | static void wrap_extra_led_set(struct led_classdev *led_cdev, | |
| 47 | enum led_brightness value) | |
| 48 | { | |
| 49 | if (value) | |
| 50 | scx200_gpio_set_low(WRAP_EXTRA_LED_GPIO); | |
| 51 | else | |
| 52 | scx200_gpio_set_high(WRAP_EXTRA_LED_GPIO); | |
| 53 | } | |
| 54 | ||
| f5506a2f | 55 | static struct led_classdev wrap_power_led = { |
| 6af4f55c SW |
56 | .name = "wrap::power", |
| 57 | .brightness_set = wrap_power_led_set, | |
| 58 | .default_trigger = "default-on", | |
| 859cb7f2 | 59 | .flags = LED_CORE_SUSPENDRESUME, |
| f5506a2f ML |
60 | }; |
| 61 | ||
| 0d75565f | 62 | static struct led_classdev wrap_error_led = { |
| 6c152bee | 63 | .name = "wrap::error", |
| 0d75565f | 64 | .brightness_set = wrap_error_led_set, |
| 859cb7f2 | 65 | .flags = LED_CORE_SUSPENDRESUME, |
| 0d75565f KK |
66 | }; |
| 67 | ||
| 68 | static struct led_classdev wrap_extra_led = { | |
| 6c152bee | 69 | .name = "wrap::extra", |
| 0d75565f | 70 | .brightness_set = wrap_extra_led_set, |
| 859cb7f2 | 71 | .flags = LED_CORE_SUSPENDRESUME, |
| 0d75565f KK |
72 | }; |
| 73 | ||
| 0d75565f KK |
74 | static int wrap_led_probe(struct platform_device *pdev) |
| 75 | { | |
| 76 | int ret; | |
| 77 | ||
| f5506a2f ML |
78 | ret = led_classdev_register(&pdev->dev, &wrap_power_led); |
| 79 | if (ret < 0) | |
| 80 | return ret; | |
| 81 | ||
| 0d75565f | 82 | ret = led_classdev_register(&pdev->dev, &wrap_error_led); |
| f5506a2f ML |
83 | if (ret < 0) |
| 84 | goto err1; | |
| 85 | ||
| 86 | ret = led_classdev_register(&pdev->dev, &wrap_extra_led); | |
| 87 | if (ret < 0) | |
| 88 | goto err2; | |
| 89 | ||
| 90 | return ret; | |
| 91 | ||
| 92 | err2: | |
| 93 | led_classdev_unregister(&wrap_error_led); | |
| 94 | err1: | |
| 95 | led_classdev_unregister(&wrap_power_led); | |
| 96 | ||
| 0d75565f KK |
97 | return ret; |
| 98 | } | |
| 99 | ||
| 100 | static int wrap_led_remove(struct platform_device *pdev) | |
| 101 | { | |
| f5506a2f | 102 | led_classdev_unregister(&wrap_power_led); |
| 0d75565f KK |
103 | led_classdev_unregister(&wrap_error_led); |
| 104 | led_classdev_unregister(&wrap_extra_led); | |
| 105 | return 0; | |
| 106 | } | |
| 107 | ||
| 108 | static struct platform_driver wrap_led_driver = { | |
| 109 | .probe = wrap_led_probe, | |
| 110 | .remove = wrap_led_remove, | |
| 0d75565f KK |
111 | .driver = { |
| 112 | .name = DRVNAME, | |
| 113 | .owner = THIS_MODULE, | |
| 114 | }, | |
| 115 | }; | |
| 116 | ||
| 117 | static int __init wrap_led_init(void) | |
| 118 | { | |
| 119 | int ret; | |
| 120 | ||
| 121 | if (!scx200_gpio_present()) { | |
| 122 | ret = -ENODEV; | |
| 123 | goto out; | |
| 124 | } | |
| 125 | ||
| 126 | ret = platform_driver_register(&wrap_led_driver); | |
| 127 | if (ret < 0) | |
| 128 | goto out; | |
| 129 | ||
| 130 | pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0); | |
| 131 | if (IS_ERR(pdev)) { | |
| 132 | ret = PTR_ERR(pdev); | |
| 133 | platform_driver_unregister(&wrap_led_driver); | |
| 134 | goto out; | |
| 135 | } | |
| 136 | ||
| 137 | out: | |
| 138 | return ret; | |
| 139 | } | |
| 140 | ||
| 141 | static void __exit wrap_led_exit(void) | |
| 142 | { | |
| 143 | platform_device_unregister(pdev); | |
| 144 | platform_driver_unregister(&wrap_led_driver); | |
| 145 | } | |
| 146 | ||
| 147 | module_init(wrap_led_init); | |
| 148 | module_exit(wrap_led_exit); | |
| 149 | ||
| 150 | MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>"); | |
| 151 | MODULE_DESCRIPTION("PCEngines WRAP LED driver"); | |
| 152 | MODULE_LICENSE("GPL"); | |
| 153 |