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leds-tosa.c

/*
 * LED Triggers Core
 *
 * Copyright 2005 Dirk Opfer
 *
 * Author: Dirk Opfer <Dirk@Opfer-Online.de>
 *    based on spitz.c
 *
 * 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/tosa.h>

static void tosaled_amber_set(struct led_classdev *led_cdev,
                        enum led_brightness value)
{
      if (value)
            set_scoop_gpio(&tosascoop_jc_device.dev,
                        TOSA_SCOOP_JC_CHRG_ERR_LED);
      else
            reset_scoop_gpio(&tosascoop_jc_device.dev,
                        TOSA_SCOOP_JC_CHRG_ERR_LED);
}

static void tosaled_green_set(struct led_classdev *led_cdev,
                        enum led_brightness value)
{
      if (value)
            set_scoop_gpio(&tosascoop_jc_device.dev,
                        TOSA_SCOOP_JC_NOTE_LED);
      else
            reset_scoop_gpio(&tosascoop_jc_device.dev,
                        TOSA_SCOOP_JC_NOTE_LED);
}

static struct led_classdev tosa_amber_led = {
      .name             = "tosa:amber",
      .default_trigger  = "sharpsl-charge",
      .brightness_set         = tosaled_amber_set,
};

static struct led_classdev tosa_green_led = {
      .name             = "tosa:green",
      .default_trigger  = "nand-disk",
      .brightness_set         = tosaled_green_set,
};

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

static int tosaled_resume(struct platform_device *dev)
{
      led_classdev_resume(&tosa_amber_led);
      led_classdev_resume(&tosa_green_led);
      return 0;
}
#else
#define tosaled_suspend NULL
#define tosaled_resume NULL
#endif

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

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

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

      return ret;
}

static int tosaled_remove(struct platform_device *pdev)
{
      led_classdev_unregister(&tosa_amber_led);
      led_classdev_unregister(&tosa_green_led);

      return 0;
}

static struct platform_driver tosaled_driver = {
      .probe            = tosaled_probe,
      .remove           = tosaled_remove,
      .suspend    = tosaled_suspend,
      .resume           = tosaled_resume,
      .driver           = {
            .name       = "tosa-led",
      },
};

static int __init tosaled_init(void)
{
      return platform_driver_register(&tosaled_driver);
}

static void __exit tosaled_exit(void)
{
      platform_driver_unregister(&tosaled_driver);
}

module_init(tosaled_init);
module_exit(tosaled_exit);

MODULE_AUTHOR("Dirk Opfer <Dirk@Opfer-Online.de>");
MODULE_DESCRIPTION("Tosa LED driver");
MODULE_LICENSE("GPL");

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