1/*
  2 * Driver for the Analog Devices digital potentiometers (I2C bus)
  3 *
  4 * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
  5 *
  6 * Licensed under the GPL-2 or later.
  7 */
  8
  9#include <linux/i2c.h>
 10#include <linux/module.h>
 11
 12#include "ad525x_dpot.h"
 13
 14/* I2C bus functions */
 15static int write_d8(void *client, u8 val)
 16{
 17	return i2c_smbus_write_byte(client, val);
 18}
 19
 20static int write_r8d8(void *client, u8 reg, u8 val)
 21{
 22	return i2c_smbus_write_byte_data(client, reg, val);
 23}
 24
 25static int write_r8d16(void *client, u8 reg, u16 val)
 26{
 27	return i2c_smbus_write_word_data(client, reg, val);
 28}
 29
 30static int read_d8(void *client)
 31{
 32	return i2c_smbus_read_byte(client);
 33}
 34
 35static int read_r8d8(void *client, u8 reg)
 36{
 37	return i2c_smbus_read_byte_data(client, reg);
 38}
 39
 40static int read_r8d16(void *client, u8 reg)
 41{
 42	return i2c_smbus_read_word_data(client, reg);
 43}
 44
 45static const struct ad_dpot_bus_ops bops = {
 46	.read_d8	= read_d8,
 47	.read_r8d8	= read_r8d8,
 48	.read_r8d16	= read_r8d16,
 49	.write_d8	= write_d8,
 50	.write_r8d8	= write_r8d8,
 51	.write_r8d16	= write_r8d16,
 52};
 53
 54static int __devinit ad_dpot_i2c_probe(struct i2c_client *client,
 55				      const struct i2c_device_id *id)
 56{
 57	struct ad_dpot_bus_data bdata = {
 58		.client = client,
 59		.bops = &bops,
 60	};
 61
 62	if (!i2c_check_functionality(client->adapter,
 63				     I2C_FUNC_SMBUS_WORD_DATA)) {
 64		dev_err(&client->dev, "SMBUS Word Data not Supported\n");
 65		return -EIO;
 66	}
 67
 68	return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
 69}
 70
 71static int __devexit ad_dpot_i2c_remove(struct i2c_client *client)
 72{
 73	return ad_dpot_remove(&client->dev);
 74}
 75
 76static const struct i2c_device_id ad_dpot_id[] = {
 77	{"ad5258", AD5258_ID},
 78	{"ad5259", AD5259_ID},
 79	{"ad5251", AD5251_ID},
 80	{"ad5252", AD5252_ID},
 81	{"ad5253", AD5253_ID},
 82	{"ad5254", AD5254_ID},
 83	{"ad5255", AD5255_ID},
 84	{"ad5241", AD5241_ID},
 85	{"ad5242", AD5242_ID},
 86	{"ad5243", AD5243_ID},
 87	{"ad5245", AD5245_ID},
 88	{"ad5246", AD5246_ID},
 89	{"ad5247", AD5247_ID},
 90	{"ad5248", AD5248_ID},
 91	{"ad5280", AD5280_ID},
 92	{"ad5282", AD5282_ID},
 93	{"adn2860", ADN2860_ID},
 94	{"ad5273", AD5273_ID},
 95	{"ad5161", AD5161_ID},
 96	{"ad5171", AD5171_ID},
 97	{"ad5170", AD5170_ID},
 98	{"ad5172", AD5172_ID},
 99	{"ad5173", AD5173_ID},
100	{"ad5272", AD5272_ID},
101	{"ad5274", AD5274_ID},
102	{}
103};
104MODULE_DEVICE_TABLE(i2c, ad_dpot_id);
105
106static struct i2c_driver ad_dpot_i2c_driver = {
107	.driver = {
108		.name	= "ad_dpot",
109		.owner	= THIS_MODULE,
110	},
111	.probe		= ad_dpot_i2c_probe,
112	.remove		= __devexit_p(ad_dpot_i2c_remove),
113	.id_table	= ad_dpot_id,
114};
115
116module_i2c_driver(ad_dpot_i2c_driver);
117
118MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
119MODULE_DESCRIPTION("digital potentiometer I2C bus driver");
120MODULE_LICENSE("GPL");
121MODULE_ALIAS("i2c:ad_dpot");

  1/*
  2 * Driver for the Analog Devices digital potentiometers (I2C bus)
  3 *
  4 * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
  5 *
  6 * Licensed under the GPL-2 or later.
  7 */
  8
  9#include <linux/i2c.h>
 10#include <linux/module.h>
 11
 12#include "ad525x_dpot.h"
 13
 14/* I2C bus functions */
 15static int write_d8(void *client, u8 val)
 16{
 17	return i2c_smbus_write_byte(client, val);
 18}
 19
 20static int write_r8d8(void *client, u8 reg, u8 val)
 21{
 22	return i2c_smbus_write_byte_data(client, reg, val);
 23}
 24
 25static int write_r8d16(void *client, u8 reg, u16 val)
 26{
 27	return i2c_smbus_write_word_data(client, reg, val);
 28}
 29
 30static int read_d8(void *client)
 31{
 32	return i2c_smbus_read_byte(client);
 33}
 34
 35static int read_r8d8(void *client, u8 reg)
 36{
 37	return i2c_smbus_read_byte_data(client, reg);
 38}
 39
 40static int read_r8d16(void *client, u8 reg)
 41{
 42	return i2c_smbus_read_word_data(client, reg);
 43}
 44
 45static const struct ad_dpot_bus_ops bops = {
 46	.read_d8	= read_d8,
 47	.read_r8d8	= read_r8d8,
 48	.read_r8d16	= read_r8d16,
 49	.write_d8	= write_d8,
 50	.write_r8d8	= write_r8d8,
 51	.write_r8d16	= write_r8d16,
 52};
 53
 54static int ad_dpot_i2c_probe(struct i2c_client *client,
 55				      const struct i2c_device_id *id)
 56{
 57	struct ad_dpot_bus_data bdata = {
 58		.client = client,
 59		.bops = &bops,
 60	};
 61
 62	if (!i2c_check_functionality(client->adapter,
 63				     I2C_FUNC_SMBUS_WORD_DATA)) {
 64		dev_err(&client->dev, "SMBUS Word Data not Supported\n");
 65		return -EIO;
 66	}
 67
 68	return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
 69}
 70
 71static int ad_dpot_i2c_remove(struct i2c_client *client)
 72{
 73	return ad_dpot_remove(&client->dev);
 74}
 75
 76static const struct i2c_device_id ad_dpot_id[] = {
 77	{"ad5258", AD5258_ID},
 78	{"ad5259", AD5259_ID},
 79	{"ad5251", AD5251_ID},
 80	{"ad5252", AD5252_ID},
 81	{"ad5253", AD5253_ID},
 82	{"ad5254", AD5254_ID},
 83	{"ad5255", AD5255_ID},
 84	{"ad5241", AD5241_ID},
 85	{"ad5242", AD5242_ID},
 86	{"ad5243", AD5243_ID},
 87	{"ad5245", AD5245_ID},
 88	{"ad5246", AD5246_ID},
 89	{"ad5247", AD5247_ID},
 90	{"ad5248", AD5248_ID},
 91	{"ad5280", AD5280_ID},
 92	{"ad5282", AD5282_ID},
 93	{"adn2860", ADN2860_ID},
 94	{"ad5273", AD5273_ID},
 95	{"ad5161", AD5161_ID},
 96	{"ad5171", AD5171_ID},
 97	{"ad5170", AD5170_ID},
 98	{"ad5172", AD5172_ID},
 99	{"ad5173", AD5173_ID},
100	{"ad5272", AD5272_ID},
101	{"ad5274", AD5274_ID},
102	{}
103};
104MODULE_DEVICE_TABLE(i2c, ad_dpot_id);
105
106static struct i2c_driver ad_dpot_i2c_driver = {
107	.driver = {
108		.name	= "ad_dpot",
 
109	},
110	.probe		= ad_dpot_i2c_probe,
111	.remove		= ad_dpot_i2c_remove,
112	.id_table	= ad_dpot_id,
113};
114
115module_i2c_driver(ad_dpot_i2c_driver);
116
117MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
118MODULE_DESCRIPTION("digital potentiometer I2C bus driver");
119MODULE_LICENSE("GPL");