forked from Qortal/Brooklyn
04c1822c0a
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119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for the Analog Devices digital potentiometers (I2C bus)
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*
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* Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
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*/
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include "ad525x_dpot.h"
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/* I2C bus functions */
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static int write_d8(void *client, u8 val)
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{
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return i2c_smbus_write_byte(client, val);
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}
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static int write_r8d8(void *client, u8 reg, u8 val)
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{
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return i2c_smbus_write_byte_data(client, reg, val);
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}
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static int write_r8d16(void *client, u8 reg, u16 val)
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{
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return i2c_smbus_write_word_data(client, reg, val);
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}
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static int read_d8(void *client)
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{
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return i2c_smbus_read_byte(client);
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}
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static int read_r8d8(void *client, u8 reg)
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{
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return i2c_smbus_read_byte_data(client, reg);
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}
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static int read_r8d16(void *client, u8 reg)
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{
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return i2c_smbus_read_word_data(client, reg);
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}
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static const struct ad_dpot_bus_ops bops = {
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.read_d8 = read_d8,
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.read_r8d8 = read_r8d8,
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.read_r8d16 = read_r8d16,
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.write_d8 = write_d8,
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.write_r8d8 = write_r8d8,
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.write_r8d16 = write_r8d16,
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};
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static int ad_dpot_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct ad_dpot_bus_data bdata = {
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.client = client,
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.bops = &bops,
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};
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if (!i2c_check_functionality(client->adapter,
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I2C_FUNC_SMBUS_WORD_DATA)) {
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dev_err(&client->dev, "SMBUS Word Data not Supported\n");
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return -EIO;
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}
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return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
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}
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static int ad_dpot_i2c_remove(struct i2c_client *client)
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{
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return ad_dpot_remove(&client->dev);
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}
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static const struct i2c_device_id ad_dpot_id[] = {
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{"ad5258", AD5258_ID},
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{"ad5259", AD5259_ID},
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{"ad5251", AD5251_ID},
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{"ad5252", AD5252_ID},
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{"ad5253", AD5253_ID},
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{"ad5254", AD5254_ID},
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{"ad5255", AD5255_ID},
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{"ad5241", AD5241_ID},
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{"ad5242", AD5242_ID},
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{"ad5243", AD5243_ID},
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{"ad5245", AD5245_ID},
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{"ad5246", AD5246_ID},
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{"ad5247", AD5247_ID},
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{"ad5248", AD5248_ID},
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{"ad5280", AD5280_ID},
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{"ad5282", AD5282_ID},
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{"adn2860", ADN2860_ID},
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{"ad5273", AD5273_ID},
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{"ad5161", AD5161_ID},
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{"ad5171", AD5171_ID},
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{"ad5170", AD5170_ID},
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{"ad5172", AD5172_ID},
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{"ad5173", AD5173_ID},
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{"ad5272", AD5272_ID},
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{"ad5274", AD5274_ID},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, ad_dpot_id);
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static struct i2c_driver ad_dpot_i2c_driver = {
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.driver = {
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.name = "ad_dpot",
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},
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.probe = ad_dpot_i2c_probe,
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.remove = ad_dpot_i2c_remove,
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.id_table = ad_dpot_id,
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};
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module_i2c_driver(ad_dpot_i2c_driver);
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MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
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MODULE_DESCRIPTION("digital potentiometer I2C bus driver");
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MODULE_LICENSE("GPL");
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