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kernel/linux-rt-4.4.41/drivers/clk/clk-max77686.c 2.42 KB
5113f6f70   김현기   kernel add
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  /*
   * clk-max77686.c - Clock driver for Maxim 77686
   *
   * Copyright (C) 2012 Samsung Electornics
   * Jonghwa Lee <jonghwa3.lee@samsung.com>
   *
   * This program is free software; you can redistribute  it and/or modify it
   * under  the terms of  the GNU General  Public License as published by the
   * Free Software Foundation;  either version 2 of the  License, or (at your
   * option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   *
   */
  
  #include <linux/kernel.h>
  #include <linux/slab.h>
  #include <linux/err.h>
  #include <linux/module.h>
  #include <linux/platform_device.h>
  #include <linux/mfd/max77686.h>
  #include <linux/mfd/max77686-private.h>
  #include <linux/clk-provider.h>
  #include <linux/mutex.h>
  #include <linux/clkdev.h>
  
  #include <dt-bindings/clock/maxim,max77686.h>
  #include "clk-max-gen.h"
  
  static struct clk_init_data max77686_clks_init[MAX77686_CLKS_NUM] = {
  	[MAX77686_CLK_AP] = {
  		.name = "32khz_ap",
  		.ops = &max_gen_clk_ops,
  		.flags = CLK_IS_ROOT,
  	},
  	[MAX77686_CLK_CP] = {
  		.name = "32khz_cp",
  		.ops = &max_gen_clk_ops,
  		.flags = CLK_IS_ROOT,
  	},
  	[MAX77686_CLK_PMIC] = {
  		.name = "32khz_pmic",
  		.ops = &max_gen_clk_ops,
  		.flags = CLK_IS_ROOT,
  	},
  };
  
  static int max77686_clk_probe(struct platform_device *pdev)
  {
  	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
  
  	return max_gen_clk_probe(pdev, iodev->regmap, MAX77686_REG_32KHZ,
  				 max77686_clks_init, MAX77686_CLKS_NUM);
  }
  
  static int max77686_clk_remove(struct platform_device *pdev)
  {
  	return max_gen_clk_remove(pdev, MAX77686_CLKS_NUM);
  }
  
  static const struct platform_device_id max77686_clk_id[] = {
  	{ "max77686-clk", 0},
  	{ },
  };
  MODULE_DEVICE_TABLE(platform, max77686_clk_id);
  
  static struct platform_driver max77686_clk_driver = {
  	.driver = {
  		.name  = "max77686-clk",
  	},
  	.probe = max77686_clk_probe,
  	.remove = max77686_clk_remove,
  	.id_table = max77686_clk_id,
  };
  
  module_platform_driver(max77686_clk_driver);
  
  MODULE_DESCRIPTION("MAXIM 77686 Clock Driver");
  MODULE_AUTHOR("Jonghwa Lee <jonghwa3.lee@samsung.com>");
  MODULE_LICENSE("GPL");