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kernel/linux-rt-4.4.41/drivers/leds/leds-sead3.c 1.8 KB
5113f6f70   김현기   kernel add
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  /*
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   *
   * Copyright (C) 2012 MIPS Technologies, Inc.  All rights reserved.
   * Copyright (C) 2015 Imagination Technologies, Inc.
   */
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/platform_device.h>
  #include <linux/leds.h>
  #include <linux/err.h>
  #include <linux/io.h>
  
  #include <asm/mips-boards/sead3-addr.h>
  
  static void sead3_pled_set(struct led_classdev *led_cdev,
  		enum led_brightness value)
  {
  	writel(value, (void __iomem *)SEAD3_CPLD_P_LED);
  }
  
  static void sead3_fled_set(struct led_classdev *led_cdev,
  		enum led_brightness value)
  {
  	writel(value, (void __iomem *)SEAD3_CPLD_F_LED);
  }
  
  static struct led_classdev sead3_pled = {
  	.name		= "sead3::pled",
  	.brightness_set = sead3_pled_set,
  	.flags		= LED_CORE_SUSPENDRESUME,
  };
  
  static struct led_classdev sead3_fled = {
  	.name		= "sead3::fled",
  	.brightness_set = sead3_fled_set,
  	.flags		= LED_CORE_SUSPENDRESUME,
  };
  
  static int sead3_led_probe(struct platform_device *pdev)
  {
  	int ret;
  
  	ret = led_classdev_register(&pdev->dev, &sead3_pled);
  	if (ret < 0)
  		return ret;
  
  	ret = led_classdev_register(&pdev->dev, &sead3_fled);
  	if (ret < 0)
  		led_classdev_unregister(&sead3_pled);
  
  	return ret;
  }
  
  static int sead3_led_remove(struct platform_device *pdev)
  {
  	led_classdev_unregister(&sead3_pled);
  	led_classdev_unregister(&sead3_fled);
  
  	return 0;
  }
  
  static struct platform_driver sead3_led_driver = {
  	.probe		= sead3_led_probe,
  	.remove		= sead3_led_remove,
  	.driver		= {
  		.name		= "sead3-led",
  	},
  };
  
  module_platform_driver(sead3_led_driver);
  
  MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>");
  MODULE_DESCRIPTION("SEAD3 LED driver");
  MODULE_LICENSE("GPL");