Eric Lee / smarc-fsl-linux-kernel

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drivers/leds/leds-hp6xx.c 1.94 KB
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81f7e3824   Eric Lee   Initial Release, ... 
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  /*
   * LED Triggers Core
   * For the HP Jornada 620/660/680/690 handhelds
   *
   * Copyright 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com>
   *     this driver is based on leds-spitz.c by Richard Purdie.
   *
   * 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/module.h>
  #include <linux/kernel.h>
  #include <linux/platform_device.h>
  #include <linux/leds.h>
  #include <asm/hd64461.h>
  #include <mach/hp6xx.h>
  
  static void hp6xxled_green_set(struct led_classdev *led_cdev,
  			       enum led_brightness value)
  {
  	u8 v8;
  
  	v8 = inb(PKDR);
  	if (value)
  		outb(v8 & (~PKDR_LED_GREEN), PKDR);
  	else
  		outb(v8 | PKDR_LED_GREEN, PKDR);
  }
  
  static void hp6xxled_red_set(struct led_classdev *led_cdev,
  			     enum led_brightness value)
  {
  	u16 v16;
  
  	v16 = inw(HD64461_GPBDR);
  	if (value)
  		outw(v16 & (~HD64461_GPBDR_LED_RED), HD64461_GPBDR);
  	else
  		outw(v16 | HD64461_GPBDR_LED_RED, HD64461_GPBDR);
  }
  
  static struct led_classdev hp6xx_red_led = {
  	.name			= "hp6xx:red",
  	.default_trigger	= "hp6xx-charge",
  	.brightness_set		= hp6xxled_red_set,
  	.flags			= LED_CORE_SUSPENDRESUME,
  };
  
  static struct led_classdev hp6xx_green_led = {
  	.name			= "hp6xx:green",
  	.default_trigger	= "disk-activity",
  	.brightness_set		= hp6xxled_green_set,
  	.flags			= LED_CORE_SUSPENDRESUME,
  };
  
  static int hp6xxled_probe(struct platform_device *pdev)
  {
  	int ret;
  
  	ret = devm_led_classdev_register(&pdev->dev, &hp6xx_red_led);
  	if (ret < 0)
  		return ret;
  
  	return devm_led_classdev_register(&pdev->dev, &hp6xx_green_led);
  }
  
  static struct platform_driver hp6xxled_driver = {
  	.probe		= hp6xxled_probe,
  	.driver		= {
  		.name		= "hp6xx-led",
  	},
  };
  
  module_platform_driver(hp6xxled_driver);
  
  MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
  MODULE_DESCRIPTION("HP Jornada 6xx LED driver");
  MODULE_LICENSE("GPL");
  MODULE_ALIAS("platform:hp6xx-led");