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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_event_spec ad7091r5_events[] = {
{
.type = IIO_EV_TYPE_THRESH,
.dir = IIO_EV_DIR_RISING,
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
BIT(IIO_EV_INFO_ENABLE),
},
{
.type = IIO_EV_TYPE_THRESH,
.dir = IIO_EV_DIR_FALLING,
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
BIT(IIO_EV_INFO_ENABLE),
},
{
.type = IIO_EV_TYPE_THRESH,
.dir = IIO_EV_DIR_EITHER,
.mask_separate = BIT(IIO_EV_INFO_HYSTERESIS),
},
};
#define AD7091R_CHANNEL(idx, bits, ev, num_ev) { \
.type = IIO_VOLTAGE, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
.indexed = 1, \
.channel = idx, \
.event_spec = ev, \
.num_event_specs = num_ev, \
.scan_type.storagebits = 16, \
.scan_type.realbits = bits, \
}
static const struct iio_chan_spec ad7091r5_channels_irq[] = {
AD7091R_CHANNEL(0, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)),
AD7091R_CHANNEL(1, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)),
AD7091R_CHANNEL(2, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)),
AD7091R_CHANNEL(3, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_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 const struct ad7091r_chip_info ad7091r5_chip_info_irq = {
.channels = ad7091r5_channels_irq,
.num_channels = ARRAY_SIZE(ad7091r5_channels_irq),
.vref_mV = 2500,
};
static const struct ad7091r_chip_info ad7091r5_chip_info_noirq = {
.channels = ad7091r5_channels_noirq,
.num_channels = ARRAY_SIZE(ad7091r5_channels_noirq),
.vref_mV = 2500,
};
static int ad7091r5_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
const struct ad7091r_chip_info *chip_info;
struct regmap *map = devm_regmap_init_i2c(i2c, &ad7091r_regmap_config);
if (IS_ERR(map))
return PTR_ERR(map);
if (i2c->irq)
chip_info = &ad7091r5_chip_info_irq;
else
chip_info = &ad7091r5_chip_info_noirq;
return ad7091r_probe(&i2c->dev, id->name, chip_info, map, i2c->irq);
}
static const struct of_device_id ad7091r5_dt_ids[] = {
{ .compatible = "adi,ad7091r5" },
{},
};
MODULE_DEVICE_TABLE(of, ad7091r5_dt_ids);
static const struct i2c_device_id ad7091r5_i2c_ids[] = {
{"ad7091r5", 0},
{}
};
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");
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