drivers/leds/leds-corgi.c

   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/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/leds.h>
  18 #include <mach/corgi.h>
  19 #include <mach/hardware.h>
  20 #include <mach/pxa-regs.h>
  21 #include <asm/hardware/scoop.h>
  22
  23 static void corgiled_amber_set(struct led_classdev *led_cdev,
  24                                enum led_brightness value)
  25 {
  26         if (value)
  27                 GPSR0 = GPIO_bit(CORGI_GPIO_LED_ORANGE);
  28         else
  29                 GPCR0 = GPIO_bit(CORGI_GPIO_LED_ORANGE);
  30 }
  31
  32 static void corgiled_green_set(struct led_classdev *led_cdev,
  33                                enum led_brightness value)
  34 {
  35         if (value)
  36                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
  37         else
  38                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
  39 }
  40
  41 static struct led_classdev corgi_amber_led = {
  42         .name                   = "corgi:amber:charge",
  43         .default_trigger        = "sharpsl-charge",
  44         .brightness_set         = corgiled_amber_set,
  45 };
  46
  47 static struct led_classdev corgi_green_led = {
  48         .name                   = "corgi:green:mail",
  49         .default_trigger        = "nand-disk",
  50         .brightness_set         = corgiled_green_set,
  51 };
  52
  53 #ifdef CONFIG_PM
  54 static int corgiled_suspend(struct platform_device *dev, pm_message_t state)
  55 {
  56 #ifdef CONFIG_LEDS_TRIGGERS
  57         if (corgi_amber_led.trigger &&
  58             strcmp(corgi_amber_led.trigger->name, "sharpsl-charge"))
  59 #endif
  60                 led_classdev_suspend(&corgi_amber_led);
  61         led_classdev_suspend(&corgi_green_led);
  62         return 0;
  63 }
  64
  65 static int corgiled_resume(struct platform_device *dev)
  66 {
  67         led_classdev_resume(&corgi_amber_led);
  68         led_classdev_resume(&corgi_green_led);
  69         return 0;
  70 }
  71 #endif
  72
  73 static int corgiled_probe(struct platform_device *pdev)
  74 {
  75         int ret;
  76
  77         ret = led_classdev_register(&pdev->dev, &corgi_amber_led);
  78         if (ret < 0)
  79                 return ret;
  80
  81         ret = led_classdev_register(&pdev->dev, &corgi_green_led);
  82         if (ret < 0)
  83                 led_classdev_unregister(&corgi_amber_led);
  84
  85         return ret;
  86 }
  87
  88 static int corgiled_remove(struct platform_device *pdev)
  89 {
  90         led_classdev_unregister(&corgi_amber_led);
  91         led_classdev_unregister(&corgi_green_led);
  92         return 0;
  93 }
  94
  95 static struct platform_driver corgiled_driver = {
  96         .probe          = corgiled_probe,
  97         .remove         = corgiled_remove,
  98 #ifdef CONFIG_PM
  99         .suspend        = corgiled_suspend,
 100         .resume         = corgiled_resume,
 101 #endif
 102         .driver         = {
 103                 .name           = "corgi-led",
 104                 .owner          = THIS_MODULE,
 105         },
 106 };
 107
 108 static int __init corgiled_init(void)
 109 {
 110         return platform_driver_register(&corgiled_driver);
 111 }
 112
 113 static void __exit corgiled_exit(void)
 114 {
 115         platform_driver_unregister(&corgiled_driver);
 116 }
 117
 118 module_init(corgiled_init);
 119 module_exit(corgiled_exit);
 120
 121 MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
 122 MODULE_DESCRIPTION("Corgi LED driver");
 123 MODULE_LICENSE("GPL");
 124 MODULE_ALIAS("platform:corgi-led");