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kernel/linux-rt-4.4.41/sound/soc/codecs/cs4271-spi.c 1.46 KB
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  /*
   * CS4271 SPI audio driver
   *
   * Copyright (c) 2010 Alexander Sverdlin <subaparts@yandex.ru>
   *
   * 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.
   */
  
  #include <linux/module.h>
  #include <linux/spi/spi.h>
  #include <linux/regmap.h>
  #include <sound/soc.h>
  #include "cs4271.h"
  
  static int cs4271_spi_probe(struct spi_device *spi)
  {
  	struct regmap_config config;
  
  	config = cs4271_regmap_config;
  	config.reg_bits = 16;
  	config.val_bits = 8;
  	config.read_flag_mask = 0x21;
  	config.write_flag_mask = 0x20;
  
  	return cs4271_probe(&spi->dev, devm_regmap_init_spi(spi, &config));
  }
  
  static int cs4271_spi_remove(struct spi_device *spi)
  {
  	snd_soc_unregister_codec(&spi->dev);
  	return 0;
  }
  
  static struct spi_driver cs4271_spi_driver = {
  	.driver = {
  		.name	= "cs4271",
  		.of_match_table = of_match_ptr(cs4271_dt_ids),
  	},
  	.probe		= cs4271_spi_probe,
  	.remove		= cs4271_spi_remove,
  };
  module_spi_driver(cs4271_spi_driver);
  
  MODULE_DESCRIPTION("ASoC CS4271 SPI Driver");
  MODULE_AUTHOR("Alexander Sverdlin <subaparts@yandex.ru>");
  MODULE_LICENSE("GPL");