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leds-spitz.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/hardware/scoop.h>
#include <asm/mach-types.h>
#include <asm/arch/hardware.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/spitz.h>

static void spitzled_amber_set(struct led_classdev *led_cdev, enum led_brightness value)
{
      if (value)
            set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);
      else
            reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);
}

static void spitzled_green_set(struct led_classdev *led_cdev, enum led_brightness value)
{
      if (value)
            set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
      else
            reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
}

static struct led_classdev spitz_amber_led = {
      .name             = "spitz:amber",
      .default_trigger  = "sharpsl-charge",
      .brightness_set         = spitzled_amber_set,
};

static struct led_classdev spitz_green_led = {
      .name             = "spitz:green",
      .default_trigger  = "ide-disk",
      .brightness_set         = spitzled_green_set,
};

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

static int spitzled_resume(struct platform_device *dev)
{
      led_classdev_resume(&spitz_amber_led);
      led_classdev_resume(&spitz_green_led);
      return 0;
}
#endif

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

      if (machine_is_akita())
            spitz_green_led.default_trigger = "nand-disk";

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

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

      return ret;
}

static int spitzled_remove(struct platform_device *pdev)
{
      led_classdev_unregister(&spitz_amber_led);
      led_classdev_unregister(&spitz_green_led);

      return 0;
}

static struct platform_driver spitzled_driver = {
      .probe            = spitzled_probe,
      .remove           = spitzled_remove,
#ifdef CONFIG_PM
      .suspend    = spitzled_suspend,
      .resume           = spitzled_resume,
#endif
      .driver           = {
            .name       = "spitz-led",
      },
};

static int __init spitzled_init(void)
{
      return platform_driver_register(&spitzled_driver);
}

static void __exit spitzled_exit(void)
{
      platform_driver_unregister(&spitzled_driver);
}

module_init(spitzled_init);
module_exit(spitzled_exit);

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

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