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kernel/linux-rt-4.4.41/sound/soc/codecs/pcm512x-i2c.c 1.98 KB
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  /*
   * Driver for the PCM512x CODECs
   *
   * Author:	Mark Brown <broonie@linaro.org>
   *		Copyright 2014 Linaro Ltd
   *
   * 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.
   *
   * 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.
   */
  
  #include <linux/init.h>
  #include <linux/module.h>
  #include <linux/i2c.h>
  
  #include "pcm512x.h"
  
  static int pcm512x_i2c_probe(struct i2c_client *i2c,
  			     const struct i2c_device_id *id)
  {
  	struct regmap *regmap;
  	struct regmap_config config = pcm512x_regmap;
  
  	/* msb needs to be set to enable auto-increment of addresses */
  	config.read_flag_mask = 0x80;
  	config.write_flag_mask = 0x80;
  
  	regmap = devm_regmap_init_i2c(i2c, &config);
  	if (IS_ERR(regmap))
  		return PTR_ERR(regmap);
  
  	return pcm512x_probe(&i2c->dev, regmap);
  }
  
  static int pcm512x_i2c_remove(struct i2c_client *i2c)
  {
  	pcm512x_remove(&i2c->dev);
  	return 0;
  }
  
  static const struct i2c_device_id pcm512x_i2c_id[] = {
  	{ "pcm5121", },
  	{ "pcm5122", },
  	{ "pcm5141", },
  	{ "pcm5142", },
  	{ }
  };
  MODULE_DEVICE_TABLE(i2c, pcm512x_i2c_id);
  
  static const struct of_device_id pcm512x_of_match[] = {
  	{ .compatible = "ti,pcm5121", },
  	{ .compatible = "ti,pcm5122", },
  	{ .compatible = "ti,pcm5141", },
  	{ .compatible = "ti,pcm5142", },
  	{ }
  };
  MODULE_DEVICE_TABLE(of, pcm512x_of_match);
  
  static struct i2c_driver pcm512x_i2c_driver = {
  	.probe 		= pcm512x_i2c_probe,
  	.remove 	= pcm512x_i2c_remove,
  	.id_table	= pcm512x_i2c_id,
  	.driver		= {
  		.name	= "pcm512x",
  		.of_match_table = pcm512x_of_match,
  		.pm     = &pcm512x_pm_ops,
  	},
  };
  
  module_i2c_driver(pcm512x_i2c_driver);
  
  MODULE_DESCRIPTION("ASoC PCM512x codec driver - I2C");
  MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
  MODULE_LICENSE("GPL v2");