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kernel/linux-rt-4.4.41/sound/soc/codecs/tlv320aic23-i2c.c 1.69 KB
5113f6f70   김현기   kernel add
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  /*
   * ALSA SoC TLV320AIC23 codec driver I2C interface
   *
   * Author:      Arun KS, <arunks@mistralsolutions.com>
   * Copyright:   (C) 2008 Mistral Solutions Pvt Ltd.,
   *
   * Based on sound/soc/codecs/wm8731.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/i2c.h>
  #include <linux/module.h>
  #include <linux/of.h>
  #include <linux/regmap.h>
  #include <sound/soc.h>
  
  #include "tlv320aic23.h"
  
  static int tlv320aic23_i2c_probe(struct i2c_client *i2c,
  				 const struct i2c_device_id *i2c_id)
  {
  	struct regmap *regmap;
  
  	if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
  		return -EINVAL;
  
  	regmap = devm_regmap_init_i2c(i2c, &tlv320aic23_regmap);
  	return tlv320aic23_probe(&i2c->dev, regmap);
  }
  
  static int tlv320aic23_i2c_remove(struct i2c_client *i2c)
  {
  	snd_soc_unregister_codec(&i2c->dev);
  	return 0;
  }
  
  static const struct i2c_device_id tlv320aic23_id[] = {
  	{"tlv320aic23", 0},
  	{}
  };
  
  MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
  
  static const struct of_device_id tlv320aic23_of_match[] = {
  	{ .compatible = "ti,tlv320aic23", },
  	{ }
  };
  MODULE_DEVICE_TABLE(of, tlv320aic23_of_match);
  
  static struct i2c_driver tlv320aic23_i2c_driver = {
  	.driver = {
  		   .name = "tlv320aic23-codec",
  		   .of_match_table = of_match_ptr(tlv320aic23_of_match),
  		   },
  	.probe = tlv320aic23_i2c_probe,
  	.remove = tlv320aic23_i2c_remove,
  	.id_table = tlv320aic23_id,
  };
  
  module_i2c_driver(tlv320aic23_i2c_driver);
  
  MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver I2C");
  MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
  MODULE_LICENSE("GPL");