drivers/hwmon/adt7410.c

   1 /*
   2  * ADT7410/ADT7420 digital temperature sensor driver
   3  *
   4  * Copyright 2012-2013 Analog Devices Inc.
   5  *   Author: Lars-Peter Clausen <lars@metafoo.de>
   6  *
   7  * Licensed under the GPL-2 or later.
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/i2c.h>
  13
  14 #include "adt7x10.h"
  15
  16 static int adt7410_i2c_read_word(struct device *dev, u8 reg)
  17 {
  18         return i2c_smbus_read_word_swapped(to_i2c_client(dev), reg);
  19 }
  20
  21 static int adt7410_i2c_write_word(struct device *dev, u8 reg, u16 data)
  22 {
  23         return i2c_smbus_write_word_swapped(to_i2c_client(dev), reg, data);
  24 }
  25
  26 static int adt7410_i2c_read_byte(struct device *dev, u8 reg)
  27 {
  28         return i2c_smbus_read_byte_data(to_i2c_client(dev), reg);
  29 }
  30
  31 static int adt7410_i2c_write_byte(struct device *dev, u8 reg, u8 data)
  32 {
  33         return i2c_smbus_write_byte_data(to_i2c_client(dev), reg, data);
  34 }
  35
  36 static const struct adt7x10_ops adt7410_i2c_ops = {
  37         .read_word = adt7410_i2c_read_word,
  38         .write_word = adt7410_i2c_write_word,
  39         .read_byte = adt7410_i2c_read_byte,
  40         .write_byte = adt7410_i2c_write_byte,
  41 };
  42
  43 static int adt7410_i2c_probe(struct i2c_client *client,
  44         const struct i2c_device_id *id)
  45 {
  46         if (!i2c_check_functionality(client->adapter,
  47                         I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
  48                 return -ENODEV;
  49
  50         return adt7x10_probe(&client->dev, NULL, client->irq, &adt7410_i2c_ops);
  51 }
  52
  53 static int adt7410_i2c_remove(struct i2c_client *client)
  54 {
  55         return adt7x10_remove(&client->dev, client->irq);
  56 }
  57
  58 static const struct i2c_device_id adt7410_ids[] = {
  59         { "adt7410", 0 },
  60         { "adt7420", 0 },
  61         {}
  62 };
  63 MODULE_DEVICE_TABLE(i2c, adt7410_ids);
  64
  65 static struct i2c_driver adt7410_driver = {
  66         .class          = I2C_CLASS_HWMON,
  67         .driver = {
  68                 .name   = "adt7410",
  69                 .pm     = ADT7X10_DEV_PM_OPS,
  70         },
  71         .probe          = adt7410_i2c_probe,
  72         .remove         = adt7410_i2c_remove,
  73         .id_table       = adt7410_ids,
  74         .address_list   = I2C_ADDRS(0x48, 0x49, 0x4a, 0x4b),
  75 };
  76 module_i2c_driver(adt7410_driver);
  77
  78 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
  79 MODULE_DESCRIPTION("ADT7410/AD7420 driver");
  80 MODULE_LICENSE("GPL");