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leds-corgi.c

/*
 * LED Triggers Core
 *
 * Copyright 2005-2006 Openedhand Ltd.
 *
 * Author: Richard Purdie <rpurdie@openedhand.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <asm/mach-types.h>
#include <asm/arch/corgi.h>
#include <asm/arch/hardware.h>
#include <asm/arch/pxa-regs.h>
#include <asm/hardware/scoop.h>

static void corgiled_amber_set(struct led_classdev *led_cdev, enum led_brightness value)
{
      if (value)
            GPSR0 = GPIO_bit(CORGI_GPIO_LED_ORANGE);
      else
            GPCR0 = GPIO_bit(CORGI_GPIO_LED_ORANGE);
}

static void corgiled_green_set(struct led_classdev *led_cdev, enum led_brightness value)
{
      if (value)
            set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
      else
            reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
}

static struct led_classdev corgi_amber_led = {
      .name             = "corgi:amber",
      .default_trigger  = "sharpsl-charge",
      .brightness_set         = corgiled_amber_set,
};

static struct led_classdev corgi_green_led = {
      .name             = "corgi:green",
      .default_trigger  = "nand-disk",
      .brightness_set         = corgiled_green_set,
};

#ifdef CONFIG_PM
static int corgiled_suspend(struct platform_device *dev, pm_message_t state)
{
#ifdef CONFIG_LEDS_TRIGGERS
      if (corgi_amber_led.trigger && strcmp(corgi_amber_led.trigger->name, "sharpsl-charge"))
#endif
            led_classdev_suspend(&corgi_amber_led);
      led_classdev_suspend(&corgi_green_led);
      return 0;
}

static int corgiled_resume(struct platform_device *dev)
{
      led_classdev_resume(&corgi_amber_led);
      led_classdev_resume(&corgi_green_led);
      return 0;
}
#endif

static int corgiled_probe(struct platform_device *pdev)
{
      int ret;

      ret = led_classdev_register(&pdev->dev, &corgi_amber_led);
      if (ret < 0)
            return ret;

      ret = led_classdev_register(&pdev->dev, &corgi_green_led);
      if (ret < 0)
            led_classdev_unregister(&corgi_amber_led);

      return ret;
}

static int corgiled_remove(struct platform_device *pdev)
{
      led_classdev_unregister(&corgi_amber_led);
      led_classdev_unregister(&corgi_green_led);
      return 0;
}

static struct platform_driver corgiled_driver = {
      .probe            = corgiled_probe,
      .remove           = corgiled_remove,
#ifdef CONFIG_PM
      .suspend    = corgiled_suspend,
      .resume           = corgiled_resume,
#endif
      .driver           = {
            .name       = "corgi-led",
      },
};

static int __init corgiled_init(void)
{
      return platform_driver_register(&corgiled_driver);
}

static void __exit corgiled_exit(void)
{
      platform_driver_unregister(&corgiled_driver);
}

module_init(corgiled_init);
module_exit(corgiled_exit);

MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
MODULE_DESCRIPTION("Corgi LED driver");
MODULE_LICENSE("GPL");

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