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125 lines
2.9 KiB
125 lines
2.9 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* AD5338R, AD5671R, AD5673R, AD5675R, AD5677R, AD5691R, AD5692R, AD5693, |
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* AD5693R, AD5694, AD5694R, AD5695R, AD5696, AD5696R |
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* Digital to analog converters driver |
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* |
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* Copyright 2018 Analog Devices Inc. |
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*/ |
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#include "ad5686.h" |
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#include <linux/module.h> |
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#include <linux/i2c.h> |
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static int ad5686_i2c_read(struct ad5686_state *st, u8 addr) |
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{ |
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struct i2c_client *i2c = to_i2c_client(st->dev); |
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struct i2c_msg msg[2] = { |
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{ |
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.addr = i2c->addr, |
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.flags = i2c->flags, |
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.len = 3, |
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.buf = &st->data[0].d8[1], |
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}, |
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{ |
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.addr = i2c->addr, |
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.flags = i2c->flags | I2C_M_RD, |
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.len = 2, |
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.buf = (char *)&st->data[0].d16, |
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}, |
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}; |
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int ret; |
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st->data[0].d32 = cpu_to_be32(AD5686_CMD(AD5686_CMD_NOOP) | |
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AD5686_ADDR(addr) | |
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0x00); |
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ret = i2c_transfer(i2c->adapter, msg, 2); |
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if (ret < 0) |
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return ret; |
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return be16_to_cpu(st->data[0].d16); |
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} |
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static int ad5686_i2c_write(struct ad5686_state *st, |
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u8 cmd, u8 addr, u16 val) |
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{ |
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struct i2c_client *i2c = to_i2c_client(st->dev); |
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int ret; |
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st->data[0].d32 = cpu_to_be32(AD5686_CMD(cmd) | AD5686_ADDR(addr) |
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| val); |
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ret = i2c_master_send(i2c, &st->data[0].d8[1], 3); |
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if (ret < 0) |
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return ret; |
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return (ret != 3) ? -EIO : 0; |
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} |
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static int ad5686_i2c_probe(struct i2c_client *i2c, |
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const struct i2c_device_id *id) |
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{ |
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return ad5686_probe(&i2c->dev, id->driver_data, id->name, |
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ad5686_i2c_write, ad5686_i2c_read); |
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} |
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static int ad5686_i2c_remove(struct i2c_client *i2c) |
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{ |
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return ad5686_remove(&i2c->dev); |
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} |
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static const struct i2c_device_id ad5686_i2c_id[] = { |
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{"ad5311r", ID_AD5311R}, |
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{"ad5338r", ID_AD5338R}, |
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{"ad5671r", ID_AD5671R}, |
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{"ad5673r", ID_AD5673R}, |
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{"ad5675r", ID_AD5675R}, |
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{"ad5677r", ID_AD5677R}, |
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{"ad5691r", ID_AD5691R}, |
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{"ad5692r", ID_AD5692R}, |
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{"ad5693", ID_AD5693}, |
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{"ad5693r", ID_AD5693R}, |
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{"ad5694", ID_AD5694}, |
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{"ad5694r", ID_AD5694R}, |
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{"ad5695r", ID_AD5695R}, |
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{"ad5696", ID_AD5696}, |
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{"ad5696r", ID_AD5696R}, |
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{} |
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}; |
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MODULE_DEVICE_TABLE(i2c, ad5686_i2c_id); |
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static const struct of_device_id ad5686_of_match[] = { |
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{ .compatible = "adi,ad5311r" }, |
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{ .compatible = "adi,ad5338r" }, |
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{ .compatible = "adi,ad5671r" }, |
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{ .compatible = "adi,ad5675r" }, |
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{ .compatible = "adi,ad5691r" }, |
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{ .compatible = "adi,ad5692r" }, |
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{ .compatible = "adi,ad5693" }, |
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{ .compatible = "adi,ad5693r" }, |
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{ .compatible = "adi,ad5694" }, |
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{ .compatible = "adi,ad5694r" }, |
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{ .compatible = "adi,ad5695r" }, |
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{ .compatible = "adi,ad5696" }, |
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{ .compatible = "adi,ad5696r" }, |
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{} |
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}; |
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MODULE_DEVICE_TABLE(of, ad5686_of_match); |
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static struct i2c_driver ad5686_i2c_driver = { |
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.driver = { |
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.name = "ad5696", |
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.of_match_table = ad5686_of_match, |
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}, |
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.probe = ad5686_i2c_probe, |
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.remove = ad5686_i2c_remove, |
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.id_table = ad5686_i2c_id, |
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}; |
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module_i2c_driver(ad5686_i2c_driver); |
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MODULE_AUTHOR("Stefan Popa <[email protected]>"); |
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MODULE_DESCRIPTION("Analog Devices AD5686 and similar multi-channel DACs"); |
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MODULE_LICENSE("GPL v2");
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