Orange Pi5 kernel

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