Eric Lee / smarc-fsl-linux-kernel

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drivers/leds/leds-locomo.c 2.31 KB
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4d3cb3547   Richard Purdie   [PATCH] LED: add ... 
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  /*
f30c22695   Uwe Zeisberger   fix file specific... 
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   * linux/drivers/leds/leds-locomo.c
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   *
   * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu>
   *
   * 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.
   */
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  #include <linux/kernel.h>
  #include <linux/init.h>
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  #include <linux/module.h>
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  #include <linux/device.h>
  #include <linux/leds.h>
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  #include <mach/hardware.h>
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  #include <asm/hardware/locomo.h>
  
  static void locomoled_brightness_set(struct led_classdev *led_cdev,
  				enum led_brightness value, int offset)
  {
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  	struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev->parent);
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  	unsigned long flags;
  
  	local_irq_save(flags);
  	if (value)
  		locomo_writel(LOCOMO_LPT_TOFH, locomo_dev->mapbase + offset);
  	else
  		locomo_writel(LOCOMO_LPT_TOFL, locomo_dev->mapbase + offset);
  	local_irq_restore(flags);
  }
  
  static void locomoled_brightness_set0(struct led_classdev *led_cdev,
  				enum led_brightness value)
  {
  	locomoled_brightness_set(led_cdev, value, LOCOMO_LPT0);
  }
  
  static void locomoled_brightness_set1(struct led_classdev *led_cdev,
  				enum led_brightness value)
  {
  	locomoled_brightness_set(led_cdev, value, LOCOMO_LPT1);
  }
  
  static struct led_classdev locomo_led0 = {
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  	.name			= "locomo:amber:charge",
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  	.default_trigger	= "main-battery-charging",
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  	.brightness_set		= locomoled_brightness_set0,
  };
  
  static struct led_classdev locomo_led1 = {
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  	.name			= "locomo:green:mail",
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  	.default_trigger	= "nand-disk",
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  	.brightness_set		= locomoled_brightness_set1,
  };
  
  static int locomoled_probe(struct locomo_dev *ldev)
  {
  	int ret;
  
  	ret = led_classdev_register(&ldev->dev, &locomo_led0);
  	if (ret < 0)
  		return ret;
  
  	ret = led_classdev_register(&ldev->dev, &locomo_led1);
  	if (ret < 0)
  		led_classdev_unregister(&locomo_led0);
  
  	return ret;
  }
  
  static int locomoled_remove(struct locomo_dev *dev)
  {
  	led_classdev_unregister(&locomo_led0);
  	led_classdev_unregister(&locomo_led1);
  	return 0;
  }
  
  static struct locomo_driver locomoled_driver = {
  	.drv = {
  		.name = "locomoled"
  	},
  	.devid	= LOCOMO_DEVID_LED,
  	.probe	= locomoled_probe,
  	.remove	= locomoled_remove,
  };
  
  static int __init locomoled_init(void)
  {
  	return locomo_driver_register(&locomoled_driver);
  }
  module_init(locomoled_init);
  
  MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
  MODULE_DESCRIPTION("Locomo LED driver");
  MODULE_LICENSE("GPL");