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kernel/linux-imx6_3.14.28/drivers/misc/bmp085-i2c.c 2.2 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * Copyright (c) 2012  Bosch Sensortec GmbH
   * Copyright (c) 2012  Unixphere AB
   *
   * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
   */
  
  #include <linux/module.h>
  #include <linux/i2c.h>
  #include <linux/err.h>
  #include "bmp085.h"
  
  #define BMP085_I2C_ADDRESS	0x77
  
  static const unsigned short normal_i2c[] = { BMP085_I2C_ADDRESS,
  							I2C_CLIENT_END };
  
  static int bmp085_i2c_detect(struct i2c_client *client,
  			     struct i2c_board_info *info)
  {
  	if (client->addr != BMP085_I2C_ADDRESS)
  		return -ENODEV;
  
  	return bmp085_detect(&client->dev);
  }
  
  static int bmp085_i2c_probe(struct i2c_client *client,
  				      const struct i2c_device_id *id)
  {
  	int err;
  	struct regmap *regmap = devm_regmap_init_i2c(client,
  						     &bmp085_regmap_config);
  
  	if (IS_ERR(regmap)) {
  		err = PTR_ERR(regmap);
  		dev_err(&client->dev, "Failed to init regmap: %d
  ", err);
  		return err;
  	}
  
  	return bmp085_probe(&client->dev, regmap, client->irq);
  }
  
  static int bmp085_i2c_remove(struct i2c_client *client)
  {
  	return bmp085_remove(&client->dev);
  }
  
  static const struct i2c_device_id bmp085_id[] = {
  	{ BMP085_NAME, 0 },
  	{ "bmp180", 0 },
  	{ }
  };
  MODULE_DEVICE_TABLE(i2c, bmp085_id);
  
  static struct i2c_driver bmp085_i2c_driver = {
  	.driver = {
  		.owner	= THIS_MODULE,
  		.name	= BMP085_NAME,
  	},
  	.id_table	= bmp085_id,
  	.probe		= bmp085_i2c_probe,
  	.remove		= bmp085_i2c_remove,
  
  	.detect		= bmp085_i2c_detect,
  	.address_list	= normal_i2c
  };
  
  module_i2c_driver(bmp085_i2c_driver);
  
  MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>");
  MODULE_DESCRIPTION("BMP085 I2C bus driver");
  MODULE_LICENSE("GPL");