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