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kernel/linux-imx6_3.14.28/drivers/hwmon/adt7410.c 1.98 KB
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  /*
   * ADT7410/ADT7420 digital temperature sensor driver
   *
   * Copyright 2012-2013 Analog Devices Inc.
   *   Author: Lars-Peter Clausen <lars@metafoo.de>
   *
   * Licensed under the GPL-2 or later.
   */
  
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/i2c.h>
  
  #include "adt7x10.h"
  
  static int adt7410_i2c_read_word(struct device *dev, u8 reg)
  {
  	return i2c_smbus_read_word_swapped(to_i2c_client(dev), reg);
  }
  
  static int adt7410_i2c_write_word(struct device *dev, u8 reg, u16 data)
  {
  	return i2c_smbus_write_word_swapped(to_i2c_client(dev), reg, data);
  }
  
  static int adt7410_i2c_read_byte(struct device *dev, u8 reg)
  {
  	return i2c_smbus_read_byte_data(to_i2c_client(dev), reg);
  }
  
  static int adt7410_i2c_write_byte(struct device *dev, u8 reg, u8 data)
  {
  	return i2c_smbus_write_byte_data(to_i2c_client(dev), reg, data);
  }
  
  static const struct adt7x10_ops adt7410_i2c_ops = {
  	.read_word = adt7410_i2c_read_word,
  	.write_word = adt7410_i2c_write_word,
  	.read_byte = adt7410_i2c_read_byte,
  	.write_byte = adt7410_i2c_write_byte,
  };
  
  static int adt7410_i2c_probe(struct i2c_client *client,
  	const struct i2c_device_id *id)
  {
  	if (!i2c_check_functionality(client->adapter,
  			I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
  		return -ENODEV;
  
  	return adt7x10_probe(&client->dev, NULL, client->irq, &adt7410_i2c_ops);
  }
  
  static int adt7410_i2c_remove(struct i2c_client *client)
  {
  	return adt7x10_remove(&client->dev, client->irq);
  }
  
  static const struct i2c_device_id adt7410_ids[] = {
  	{ "adt7410", 0 },
  	{ "adt7420", 0 },
  	{}
  };
  MODULE_DEVICE_TABLE(i2c, adt7410_ids);
  
  static struct i2c_driver adt7410_driver = {
  	.class		= I2C_CLASS_HWMON,
  	.driver = {
  		.name	= "adt7410",
  		.pm	= ADT7X10_DEV_PM_OPS,
  	},
  	.probe		= adt7410_i2c_probe,
  	.remove		= adt7410_i2c_remove,
  	.id_table	= adt7410_ids,
  	.address_list	= I2C_ADDRS(0x48, 0x49, 0x4a, 0x4b),
  };
  module_i2c_driver(adt7410_driver);
  
  MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
  MODULE_DESCRIPTION("ADT7410/AD7420 driver");
  MODULE_LICENSE("GPL");