^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Driver for the Analog Devices digital potentiometers (I2C bus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "ad525x_dpot.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /* I2C bus functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) static int write_d8(void *client, u8 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) return i2c_smbus_write_byte(client, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static int write_r8d8(void *client, u8 reg, u8 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) return i2c_smbus_write_byte_data(client, reg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static int write_r8d16(void *client, u8 reg, u16 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) return i2c_smbus_write_word_data(client, reg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static int read_d8(void *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) return i2c_smbus_read_byte(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int read_r8d8(void *client, u8 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) return i2c_smbus_read_byte_data(client, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static int read_r8d16(void *client, u8 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return i2c_smbus_read_word_data(client, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static const struct ad_dpot_bus_ops bops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) .read_d8 = read_d8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) .read_r8d8 = read_r8d8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) .read_r8d16 = read_r8d16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) .write_d8 = write_d8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) .write_r8d8 = write_r8d8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) .write_r8d16 = write_r8d16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static int ad_dpot_i2c_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct ad_dpot_bus_data bdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) .client = client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) .bops = &bops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (!i2c_check_functionality(client->adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) I2C_FUNC_SMBUS_WORD_DATA)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) dev_err(&client->dev, "SMBUS Word Data not Supported\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static int ad_dpot_i2c_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return ad_dpot_remove(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static const struct i2c_device_id ad_dpot_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {"ad5258", AD5258_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {"ad5259", AD5259_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {"ad5251", AD5251_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {"ad5252", AD5252_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {"ad5253", AD5253_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {"ad5254", AD5254_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {"ad5255", AD5255_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {"ad5241", AD5241_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {"ad5242", AD5242_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {"ad5243", AD5243_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {"ad5245", AD5245_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {"ad5246", AD5246_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {"ad5247", AD5247_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {"ad5248", AD5248_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {"ad5280", AD5280_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {"ad5282", AD5282_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {"adn2860", ADN2860_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {"ad5273", AD5273_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {"ad5161", AD5161_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {"ad5171", AD5171_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {"ad5170", AD5170_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {"ad5172", AD5172_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {"ad5173", AD5173_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {"ad5272", AD5272_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {"ad5274", AD5274_ID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) MODULE_DEVICE_TABLE(i2c, ad_dpot_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static struct i2c_driver ad_dpot_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .name = "ad_dpot",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) .probe = ad_dpot_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .remove = ad_dpot_i2c_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) .id_table = ad_dpot_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) module_i2c_driver(ad_dpot_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) MODULE_DESCRIPTION("digital potentiometer I2C bus driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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