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kernel/linux-imx6_3.14.28/arch/mips/mti-sead3/leds-sead3.c 2.32 KB
6b13f685e   김민수   BSP 최초 추가
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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.
   */
  #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>
  
  #define DRVNAME "sead3-led"
  
  static struct platform_device *pdev;
  
  static void sead3_pled_set(struct led_classdev *led_cdev,
  		enum led_brightness value)
  {
  	pr_debug("sead3_pled_set
  ");
  	writel(value, (void __iomem *)0xBF000210);	/* FIXME */
  }
  
  static void sead3_fled_set(struct led_classdev *led_cdev,
  		enum led_brightness value)
  {
  	pr_debug("sead3_fled_set
  ");
  	writel(value, (void __iomem *)0xBF000218);	/* FIXME */
  }
  
  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		= DRVNAME,
  		.owner		= THIS_MODULE,
  	},
  };
  
  static int __init sead3_led_init(void)
  {
  	int ret;
  
  	ret = platform_driver_register(&sead3_led_driver);
  	if (ret < 0)
  		goto out;
  
  	pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
  	if (IS_ERR(pdev)) {
  		ret = PTR_ERR(pdev);
  		platform_driver_unregister(&sead3_led_driver);
  		goto out;
  	}
  
  out:
  	return ret;
  }
  
  static void __exit sead3_led_exit(void)
  {
  	platform_device_unregister(pdev);
  	platform_driver_unregister(&sead3_led_driver);
  }
  
  module_init(sead3_led_init);
  module_exit(sead3_led_exit);
  
  MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>");
  MODULE_DESCRIPTION("SEAD3 LED driver");
  MODULE_LICENSE("GPL");