blob: 4f832002d116d23891f1fdf628187be04d1f0d3d [file] [log] [blame]
* Driver for the Analog Devices digital potentiometers (I2C bus)
* Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
* Licensed under the GPL-2 or later.
#include <linux/i2c.h>
#include <linux/module.h>
#include "ad525x_dpot.h"
/* I2C bus functions */
static int write_d8(void *client, u8 val)
return i2c_smbus_write_byte(client, val);
static int write_r8d8(void *client, u8 reg, u8 val)
return i2c_smbus_write_byte_data(client, reg, val);
static int write_r8d16(void *client, u8 reg, u16 val)
return i2c_smbus_write_word_data(client, reg, val);
static int read_d8(void *client)
return i2c_smbus_read_byte(client);
static int read_r8d8(void *client, u8 reg)
return i2c_smbus_read_byte_data(client, reg);
static int read_r8d16(void *client, u8 reg)
return i2c_smbus_read_word_data(client, reg);
static const struct ad_dpot_bus_ops bops = {
.read_d8 = read_d8,
.read_r8d8 = read_r8d8,
.read_r8d16 = read_r8d16,
.write_d8 = write_d8,
.write_r8d8 = write_r8d8,
.write_r8d16 = write_r8d16,
static int ad_dpot_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
struct ad_dpot_bus_data bdata = {
.client = client,
.bops = &bops,
if (!i2c_check_functionality(client->adapter,
dev_err(&client->dev, "SMBUS Word Data not Supported\n");
return -EIO;
return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
static int ad_dpot_i2c_remove(struct i2c_client *client)
return ad_dpot_remove(&client->dev);
static const struct i2c_device_id ad_dpot_id[] = {
{"ad5258", AD5258_ID},
{"ad5259", AD5259_ID},
{"ad5251", AD5251_ID},
{"ad5252", AD5252_ID},
{"ad5253", AD5253_ID},
{"ad5254", AD5254_ID},
{"ad5255", AD5255_ID},
{"ad5241", AD5241_ID},
{"ad5242", AD5242_ID},
{"ad5243", AD5243_ID},
{"ad5245", AD5245_ID},
{"ad5246", AD5246_ID},
{"ad5247", AD5247_ID},
{"ad5248", AD5248_ID},
{"ad5280", AD5280_ID},
{"ad5282", AD5282_ID},
{"adn2860", ADN2860_ID},
{"ad5273", AD5273_ID},
{"ad5161", AD5161_ID},
{"ad5171", AD5171_ID},
{"ad5170", AD5170_ID},
{"ad5172", AD5172_ID},
{"ad5173", AD5173_ID},
{"ad5272", AD5272_ID},
{"ad5274", AD5274_ID},
MODULE_DEVICE_TABLE(i2c, ad_dpot_id);
static struct i2c_driver ad_dpot_i2c_driver = {
.driver = {
.name = "ad_dpot",
.probe = ad_dpot_i2c_probe,
.remove = ad_dpot_i2c_remove,
.id_table = ad_dpot_id,
MODULE_AUTHOR("Michael Hennerich <>");
MODULE_DESCRIPTION("digital potentiometer I2C bus driver");