projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 0d75565f KK |
1 | /* |
| 2 | * LEDs driver for PCEngines WRAP | |
| 3 | * | |
| 4 | * Copyright (C) 2006 Kristian Kielhofner <[email protected]> | |
| 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 | ||
| f5506a2f ML |
79 | ret = led_classdev_register(&pdev->dev, &wrap_power_led); |
| 80 | if (ret < 0) | |
| 81 | return ret; | |
| 82 | ||
| 0d75565f | 83 | ret = led_classdev_register(&pdev->dev, &wrap_error_led); |
| f5506a2f ML |
84 | if (ret < 0) |
| 85 | goto err1; | |
| 86 | ||
| 87 | ret = led_classdev_register(&pdev->dev, &wrap_extra_led); | |
| 88 | if (ret < 0) | |
| 89 | goto err2; | |
| 90 | ||
| 91 | return ret; | |
| 92 | ||
| 93 | err2: | |
| 94 | led_classdev_unregister(&wrap_error_led); | |
| 95 | err1: | |
| 96 | led_classdev_unregister(&wrap_power_led); | |
| 97 | ||
| 0d75565f KK |
98 | return ret; |
| 99 | } | |
| 100 | ||
| 101 | static int wrap_led_remove(struct platform_device *pdev) | |
| 102 | { | |
| f5506a2f | 103 | led_classdev_unregister(&wrap_power_led); |
| 0d75565f KK |
104 | led_classdev_unregister(&wrap_error_led); |
| 105 | led_classdev_unregister(&wrap_extra_led); | |
| 106 | return 0; | |
| 107 | } | |
| 108 | ||
| 109 | static struct platform_driver wrap_led_driver = { | |
| 110 | .probe = wrap_led_probe, | |
| 111 | .remove = wrap_led_remove, | |
| 0d75565f KK |
112 | .driver = { |
| 113 | .name = DRVNAME, | |
| 114 | .owner = THIS_MODULE, | |
| 115 | }, | |
| 116 | }; | |
| 117 | ||
| 118 | static int __init wrap_led_init(void) | |
| 119 | { | |
| 120 | int ret; | |
| 121 | ||
| 122 | if (!scx200_gpio_present()) { | |
| 123 | ret = -ENODEV; | |
| 124 | goto out; | |
| 125 | } | |
| 126 | ||
| 127 | ret = platform_driver_register(&wrap_led_driver); | |
| 128 | if (ret < 0) | |
| 129 | goto out; | |
| 130 | ||
| 131 | pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0); | |
| 132 | if (IS_ERR(pdev)) { | |
| 133 | ret = PTR_ERR(pdev); | |
| 134 | platform_driver_unregister(&wrap_led_driver); | |
| 135 | goto out; | |
| 136 | } | |
| 137 | ||
| 138 | out: | |
| 139 | return ret; | |
| 140 | } | |
| 141 | ||
| 142 | static void __exit wrap_led_exit(void) | |
| 143 | { | |
| 144 | platform_device_unregister(pdev); | |
| 145 | platform_driver_unregister(&wrap_led_driver); | |
| 146 | } | |
| 147 | ||
| 148 | module_init(wrap_led_init); | |
| 149 | module_exit(wrap_led_exit); | |
| 150 | ||
| 151 | MODULE_AUTHOR("Kristian Kielhofner <[email protected]>"); | |
| 152 | MODULE_DESCRIPTION("PCEngines WRAP LED driver"); | |
| 153 | MODULE_LICENSE("GPL"); | |
| 154 |