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1// SPDX-License-Identifier: GPL-2.02/*3 * AD5338R, AD5671R, AD5673R, AD5675R, AD5677R, AD5691R, AD5692R, AD5693,4 * AD5693R, AD5694, AD5694R, AD5695R, AD5696, AD5696R5 * Digital to analog converters driver6 *7 * Copyright 2018 Analog Devices Inc.8 */9 10#include "ad5686.h"11 12#include <linux/module.h>13#include <linux/i2c.h>14 15static int ad5686_i2c_read(struct ad5686_state *st, u8 addr)16{17 struct i2c_client *i2c = to_i2c_client(st->dev);18 struct i2c_msg msg[2] = {19 {20 .addr = i2c->addr,21 .flags = i2c->flags,22 .len = 3,23 .buf = &st->data[0].d8[1],24 },25 {26 .addr = i2c->addr,27 .flags = i2c->flags | I2C_M_RD,28 .len = 2,29 .buf = (char *)&st->data[0].d16,30 },31 };32 int ret;33 34 st->data[0].d32 = cpu_to_be32(AD5686_CMD(AD5686_CMD_NOOP) |35 AD5686_ADDR(addr) |36 0x00);37 38 ret = i2c_transfer(i2c->adapter, msg, 2);39 if (ret < 0)40 return ret;41 42 return be16_to_cpu(st->data[0].d16);43}44 45static int ad5686_i2c_write(struct ad5686_state *st,46 u8 cmd, u8 addr, u16 val)47{48 struct i2c_client *i2c = to_i2c_client(st->dev);49 int ret;50 51 st->data[0].d32 = cpu_to_be32(AD5686_CMD(cmd) | AD5686_ADDR(addr)52 | val);53 54 ret = i2c_master_send(i2c, &st->data[0].d8[1], 3);55 if (ret < 0)56 return ret;57 58 return (ret != 3) ? -EIO : 0;59}60 61static int ad5686_i2c_probe(struct i2c_client *i2c)62{63 const struct i2c_device_id *id = i2c_client_get_device_id(i2c);64 return ad5686_probe(&i2c->dev, id->driver_data, id->name,65 ad5686_i2c_write, ad5686_i2c_read);66}67 68static void ad5686_i2c_remove(struct i2c_client *i2c)69{70 ad5686_remove(&i2c->dev);71}72 73static const struct i2c_device_id ad5686_i2c_id[] = {74 {"ad5311r", ID_AD5311R},75 {"ad5337r", ID_AD5337R},76 {"ad5338r", ID_AD5338R},77 {"ad5671r", ID_AD5671R},78 {"ad5673r", ID_AD5673R},79 {"ad5675r", ID_AD5675R},80 {"ad5677r", ID_AD5677R},81 {"ad5691r", ID_AD5691R},82 {"ad5692r", ID_AD5692R},83 {"ad5693", ID_AD5693},84 {"ad5693r", ID_AD5693R},85 {"ad5694", ID_AD5694},86 {"ad5694r", ID_AD5694R},87 {"ad5695r", ID_AD5695R},88 {"ad5696", ID_AD5696},89 {"ad5696r", ID_AD5696R},90 {}91};92MODULE_DEVICE_TABLE(i2c, ad5686_i2c_id);93 94static const struct of_device_id ad5686_of_match[] = {95 { .compatible = "adi,ad5311r" },96 { .compatible = "adi,ad5337r" },97 { .compatible = "adi,ad5338r" },98 { .compatible = "adi,ad5671r" },99 { .compatible = "adi,ad5675r" },100 { .compatible = "adi,ad5691r" },101 { .compatible = "adi,ad5692r" },102 { .compatible = "adi,ad5693" },103 { .compatible = "adi,ad5693r" },104 { .compatible = "adi,ad5694" },105 { .compatible = "adi,ad5694r" },106 { .compatible = "adi,ad5695r" },107 { .compatible = "adi,ad5696" },108 { .compatible = "adi,ad5696r" },109 {}110};111MODULE_DEVICE_TABLE(of, ad5686_of_match);112 113static struct i2c_driver ad5686_i2c_driver = {114 .driver = {115 .name = "ad5696",116 .of_match_table = ad5686_of_match,117 },118 .probe = ad5686_i2c_probe,119 .remove = ad5686_i2c_remove,120 .id_table = ad5686_i2c_id,121};122 123module_i2c_driver(ad5686_i2c_driver);124 125MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");126MODULE_DESCRIPTION("Analog Devices AD5686 and similar multi-channel DACs");127MODULE_LICENSE("GPL v2");128MODULE_IMPORT_NS(IIO_AD5686);129