1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * Driver for the Analog Devices digital potentiometers (I2C bus)
  4 *
  5 * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
  6 */
  7
  8#include <linux/i2c.h>
  9#include <linux/module.h>
 10
 11#include "ad525x_dpot.h"
 12
 13/* I2C bus functions */
 14static int write_d8(void *client, u8 val)
 15{
 16	return i2c_smbus_write_byte(client, val);
 17}
 18
 19static int write_r8d8(void *client, u8 reg, u8 val)
 20{
 21	return i2c_smbus_write_byte_data(client, reg, val);
 22}
 23
 24static int write_r8d16(void *client, u8 reg, u16 val)
 25{
 26	return i2c_smbus_write_word_data(client, reg, val);
 27}
 28
 29static int read_d8(void *client)
 30{
 31	return i2c_smbus_read_byte(client);
 32}
 33
 34static int read_r8d8(void *client, u8 reg)
 35{
 36	return i2c_smbus_read_byte_data(client, reg);
 37}
 38
 39static int read_r8d16(void *client, u8 reg)
 40{
 41	return i2c_smbus_read_word_data(client, reg);
 42}
 43
 44static const struct ad_dpot_bus_ops bops = {
 45	.read_d8	= read_d8,
 46	.read_r8d8	= read_r8d8,
 47	.read_r8d16	= read_r8d16,
 48	.write_d8	= write_d8,
 49	.write_r8d8	= write_r8d8,
 50	.write_r8d16	= write_r8d16,
 51};
 52
 53static int ad_dpot_i2c_probe(struct i2c_client *client)
 
 54{
 55	const struct i2c_device_id *id = i2c_client_get_device_id(client);
 56	struct ad_dpot_bus_data bdata = {
 57		.client = client,
 58		.bops = &bops,
 59	};
 60
 61	if (!i2c_check_functionality(client->adapter,
 62				     I2C_FUNC_SMBUS_WORD_DATA)) {
 63		dev_err(&client->dev, "SMBUS Word Data not Supported\n");
 64		return -EIO;
 65	}
 66
 67	return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
 68}
 69
 70static void ad_dpot_i2c_remove(struct i2c_client *client)
 71{
 72	ad_dpot_remove(&client->dev);
 73}
 74
 75static const struct i2c_device_id ad_dpot_id[] = {
 76	{"ad5258", AD5258_ID},
 77	{"ad5259", AD5259_ID},
 78	{"ad5251", AD5251_ID},
 79	{"ad5252", AD5252_ID},
 80	{"ad5253", AD5253_ID},
 81	{"ad5254", AD5254_ID},
 82	{"ad5255", AD5255_ID},
 83	{"ad5241", AD5241_ID},
 84	{"ad5242", AD5242_ID},
 85	{"ad5243", AD5243_ID},
 86	{"ad5245", AD5245_ID},
 87	{"ad5246", AD5246_ID},
 88	{"ad5247", AD5247_ID},
 89	{"ad5248", AD5248_ID},
 90	{"ad5280", AD5280_ID},
 91	{"ad5282", AD5282_ID},
 92	{"adn2860", ADN2860_ID},
 93	{"ad5273", AD5273_ID},
 94	{"ad5161", AD5161_ID},
 95	{"ad5171", AD5171_ID},
 96	{"ad5170", AD5170_ID},
 97	{"ad5172", AD5172_ID},
 98	{"ad5173", AD5173_ID},
 99	{"ad5272", AD5272_ID},
100	{"ad5274", AD5274_ID},
101	{}
102};
103MODULE_DEVICE_TABLE(i2c, ad_dpot_id);
104
105static struct i2c_driver ad_dpot_i2c_driver = {
106	.driver = {
107		.name	= "ad_dpot",
108	},
109	.probe		= ad_dpot_i2c_probe,
110	.remove		= ad_dpot_i2c_remove,
111	.id_table	= ad_dpot_id,
112};
113
114module_i2c_driver(ad_dpot_i2c_driver);
115
116MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
117MODULE_DESCRIPTION("digital potentiometer I2C bus driver");
118MODULE_LICENSE("GPL");

  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * Driver for the Analog Devices digital potentiometers (I2C bus)
  4 *
  5 * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
  6 */
  7
  8#include <linux/i2c.h>
  9#include <linux/module.h>
 10
 11#include "ad525x_dpot.h"
 12
 13/* I2C bus functions */
 14static int write_d8(void *client, u8 val)
 15{
 16	return i2c_smbus_write_byte(client, val);
 17}
 18
 19static int write_r8d8(void *client, u8 reg, u8 val)
 20{
 21	return i2c_smbus_write_byte_data(client, reg, val);
 22}
 23
 24static int write_r8d16(void *client, u8 reg, u16 val)
 25{
 26	return i2c_smbus_write_word_data(client, reg, val);
 27}
 28
 29static int read_d8(void *client)
 30{
 31	return i2c_smbus_read_byte(client);
 32}
 33
 34static int read_r8d8(void *client, u8 reg)
 35{
 36	return i2c_smbus_read_byte_data(client, reg);
 37}
 38
 39static int read_r8d16(void *client, u8 reg)
 40{
 41	return i2c_smbus_read_word_data(client, reg);
 42}
 43
 44static const struct ad_dpot_bus_ops bops = {
 45	.read_d8	= read_d8,
 46	.read_r8d8	= read_r8d8,
 47	.read_r8d16	= read_r8d16,
 48	.write_d8	= write_d8,
 49	.write_r8d8	= write_r8d8,
 50	.write_r8d16	= write_r8d16,
 51};
 52
 53static int ad_dpot_i2c_probe(struct i2c_client *client,
 54				      const struct i2c_device_id *id)
 55{
 
 56	struct ad_dpot_bus_data bdata = {
 57		.client = client,
 58		.bops = &bops,
 59	};
 60
 61	if (!i2c_check_functionality(client->adapter,
 62				     I2C_FUNC_SMBUS_WORD_DATA)) {
 63		dev_err(&client->dev, "SMBUS Word Data not Supported\n");
 64		return -EIO;
 65	}
 66
 67	return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
 68}
 69
 70static void ad_dpot_i2c_remove(struct i2c_client *client)
 71{
 72	ad_dpot_remove(&client->dev);
 73}
 74
 75static const struct i2c_device_id ad_dpot_id[] = {
 76	{"ad5258", AD5258_ID},
 77	{"ad5259", AD5259_ID},
 78	{"ad5251", AD5251_ID},
 79	{"ad5252", AD5252_ID},
 80	{"ad5253", AD5253_ID},
 81	{"ad5254", AD5254_ID},
 82	{"ad5255", AD5255_ID},
 83	{"ad5241", AD5241_ID},
 84	{"ad5242", AD5242_ID},
 85	{"ad5243", AD5243_ID},
 86	{"ad5245", AD5245_ID},
 87	{"ad5246", AD5246_ID},
 88	{"ad5247", AD5247_ID},
 89	{"ad5248", AD5248_ID},
 90	{"ad5280", AD5280_ID},
 91	{"ad5282", AD5282_ID},
 92	{"adn2860", ADN2860_ID},
 93	{"ad5273", AD5273_ID},
 94	{"ad5161", AD5161_ID},
 95	{"ad5171", AD5171_ID},
 96	{"ad5170", AD5170_ID},
 97	{"ad5172", AD5172_ID},
 98	{"ad5173", AD5173_ID},
 99	{"ad5272", AD5272_ID},
100	{"ad5274", AD5274_ID},
101	{}
102};
103MODULE_DEVICE_TABLE(i2c, ad_dpot_id);
104
105static struct i2c_driver ad_dpot_i2c_driver = {
106	.driver = {
107		.name	= "ad_dpot",
108	},
109	.probe		= ad_dpot_i2c_probe,
110	.remove		= ad_dpot_i2c_remove,
111	.id_table	= ad_dpot_id,
112};
113
114module_i2c_driver(ad_dpot_i2c_driver);
115
116MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
117MODULE_DESCRIPTION("digital potentiometer I2C bus driver");
118MODULE_LICENSE("GPL");