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// SPDX-License-Identifier: GPL-2.0
/*
* AD7091R5 Analog to Digital converter driver
*
* Copyright 2014-2019 Analog Devices Inc.
*/
#include <linux/i2c.h>
#include <linux/iio/iio.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include "ad7091r-base.h"
static const struct iio_chan_spec ad7091r5_channels_irq[] = {
AD7091R_CHANNEL(0, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)),
AD7091R_CHANNEL(1, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)),
AD7091R_CHANNEL(2, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)),
AD7091R_CHANNEL(3, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)),
};
static const struct iio_chan_spec ad7091r5_channels_noirq[] = {
AD7091R_CHANNEL(0, 12, NULL, 0),
AD7091R_CHANNEL(1, 12, NULL, 0),
AD7091R_CHANNEL(2, 12, NULL, 0),
AD7091R_CHANNEL(3, 12, NULL, 0),
};
static int ad7091r5_set_mode(struct ad7091r_state *st, enum ad7091r_mode mode)
{
int ret, conf;
switch (mode) {
case AD7091R_MODE_SAMPLE:
conf = 0;
break;
case AD7091R_MODE_COMMAND:
conf = AD7091R_REG_CONF_CMD;
break;
case AD7091R_MODE_AUTOCYCLE:
conf = AD7091R_REG_CONF_AUTO;
break;
default:
return -EINVAL;
}
ret = regmap_update_bits(st->map, AD7091R_REG_CONF,
AD7091R_REG_CONF_MODE_MASK, conf);
if (ret)
return ret;
st->mode = mode;
return 0;
}
static unsigned int ad7091r5_reg_result_chan_id(unsigned int val)
{
return AD7091R5_REG_RESULT_CH_ID(val);
}
static const struct ad7091r_chip_info ad7091r5_chip_info_irq = {
.name = "ad7091r-5",
.channels = ad7091r5_channels_irq,
.num_channels = ARRAY_SIZE(ad7091r5_channels_irq),
.vref_mV = 2500,
.reg_result_chan_id = &ad7091r5_reg_result_chan_id,
.set_mode = &ad7091r5_set_mode,
};
static const struct ad7091r_chip_info ad7091r5_chip_info_noirq = {
.name = "ad7091r-5",
.channels = ad7091r5_channels_noirq,
.num_channels = ARRAY_SIZE(ad7091r5_channels_noirq),
.vref_mV = 2500,
.reg_result_chan_id = &ad7091r5_reg_result_chan_id,
.set_mode = &ad7091r5_set_mode,
};
static const struct regmap_config ad7091r_regmap_config = {
.reg_bits = 8,
.val_bits = 16,
.writeable_reg = ad7091r_writeable_reg,
.volatile_reg = ad7091r_volatile_reg,
};
static void ad7091r5_regmap_init(struct ad7091r_state *st,
const struct regmap_config *regmap_conf)
{
struct i2c_client *i2c = container_of(st->dev, struct i2c_client, dev);
st->map = devm_regmap_init_i2c(i2c, regmap_conf);
}
static struct ad7091r_init_info ad7091r5_init_info = {
.info_irq = &ad7091r5_chip_info_irq,
.info_no_irq = &ad7091r5_chip_info_noirq,
.regmap_config = &ad7091r_regmap_config,
.init_adc_regmap = &ad7091r5_regmap_init
};
static int ad7091r5_i2c_probe(struct i2c_client *i2c)
{
const struct ad7091r_init_info *init_info;
init_info = i2c_get_match_data(i2c);
if (!init_info)
return -EINVAL;
return ad7091r_probe(&i2c->dev, init_info, i2c->irq);
}
static const struct of_device_id ad7091r5_dt_ids[] = {
{ .compatible = "adi,ad7091r5", .data = &ad7091r5_init_info },
{ }
};
MODULE_DEVICE_TABLE(of, ad7091r5_dt_ids);
static const struct i2c_device_id ad7091r5_i2c_ids[] = {
{ "ad7091r5", (kernel_ulong_t)&ad7091r5_init_info },
{ }
};
MODULE_DEVICE_TABLE(i2c, ad7091r5_i2c_ids);
static struct i2c_driver ad7091r5_driver = {
.driver = {
.name = "ad7091r5",
.of_match_table = ad7091r5_dt_ids,
},
.probe = ad7091r5_i2c_probe,
.id_table = ad7091r5_i2c_ids,
};
module_i2c_driver(ad7091r5_driver);
MODULE_AUTHOR("Beniamin Bia <beniamin.bia@analog.com>");
MODULE_DESCRIPTION("Analog Devices AD7091R5 multi-channel ADC driver");
MODULE_LICENSE("GPL v2");
MODULE_IMPORT_NS(IIO_AD7091R);
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