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drivers/bus/simple-pm-bus.c 1.34 KB
81f7e3824   Eric Lee   Initial Release, ...
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  /*
   * Simple Power-Managed Bus Driver
   *
   * Copyright (C) 2014-2015 Glider bvba
   *
   * 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.
   */
  
  #include <linux/module.h>
  #include <linux/of_platform.h>
  #include <linux/platform_device.h>
  #include <linux/pm_runtime.h>
  
  
  static int simple_pm_bus_probe(struct platform_device *pdev)
  {
  	struct device_node *np = pdev->dev.of_node;
  
  	dev_dbg(&pdev->dev, "%s
  ", __func__);
  
  	pm_runtime_enable(&pdev->dev);
  
  	if (np)
  		of_platform_populate(np, NULL, NULL, &pdev->dev);
  
  	return 0;
  }
  
  static int simple_pm_bus_remove(struct platform_device *pdev)
  {
  	dev_dbg(&pdev->dev, "%s
  ", __func__);
  
  	pm_runtime_disable(&pdev->dev);
  	return 0;
  }
  
  static const struct of_device_id simple_pm_bus_of_match[] = {
  	{ .compatible = "simple-pm-bus", },
  	{ /* sentinel */ }
  };
  MODULE_DEVICE_TABLE(of, simple_pm_bus_of_match);
  
  static struct platform_driver simple_pm_bus_driver = {
  	.probe = simple_pm_bus_probe,
  	.remove = simple_pm_bus_remove,
  	.driver = {
  		.name = "simple-pm-bus",
  		.of_match_table = simple_pm_bus_of_match,
  	},
  };
  
  module_platform_driver(simple_pm_bus_driver);
  
  MODULE_DESCRIPTION("Simple Power-Managed Bus Driver");
  MODULE_AUTHOR("Geert Uytterhoeven <geert+renesas@glider.be>");
  MODULE_LICENSE("GPL v2");