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Diffstat (limited to 'drivers/iio/adc/ad7091r5.c')
-rw-r--r--drivers/iio/adc/ad7091r5.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad7091r5.c b/drivers/iio/adc/ad7091r5.c
new file mode 100644
index 000000000000..9665679c3ea6
--- /dev/null
+++ b/drivers/iio/adc/ad7091r5.c
@@ -0,0 +1,113 @@
+// 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");