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path: root/drivers/iio/adc/ti-adc128s052.c
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Diffstat (limited to 'drivers/iio/adc/ti-adc128s052.c')
-rw-r--r--drivers/iio/adc/ti-adc128s052.c30
1 files changed, 24 insertions, 6 deletions
diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c
index 655cb564e..915be6b60 100644
--- a/drivers/iio/adc/ti-adc128s052.c
+++ b/drivers/iio/adc/ti-adc128s052.c
@@ -1,9 +1,10 @@
/*
* Copyright (C) 2014 Angelo Compagnucci <angelo.compagnucci@gmail.com>
*
- * Driver for Texas Instruments' ADC128S052 ADC chip.
- * Datasheet can be found here:
+ * Driver for Texas Instruments' ADC128S052 and ADC122S021 ADC chip.
+ * Datasheets can be found here:
* http://www.ti.com/lit/ds/symlink/adc128s052.pdf
+ * http://www.ti.com/lit/ds/symlink/adc122s021.pdf
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -16,6 +17,11 @@
#include <linux/iio/iio.h>
#include <linux/regulator/consumer.h>
+struct adc128_configuration {
+ const struct iio_chan_spec *channels;
+ u8 num_channels;
+};
+
struct adc128 {
struct spi_device *spi;
@@ -92,7 +98,7 @@ static int adc128_read_raw(struct iio_dev *indio_dev,
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) \
}
-static const struct iio_chan_spec adc128_channels[] = {
+static const struct iio_chan_spec adc128s052_channels[] = {
ADC128_VOLTAGE_CHANNEL(0),
ADC128_VOLTAGE_CHANNEL(1),
ADC128_VOLTAGE_CHANNEL(2),
@@ -103,6 +109,16 @@ static const struct iio_chan_spec adc128_channels[] = {
ADC128_VOLTAGE_CHANNEL(7),
};
+static const struct iio_chan_spec adc122s021_channels[] = {
+ ADC128_VOLTAGE_CHANNEL(0),
+ ADC128_VOLTAGE_CHANNEL(1),
+};
+
+static const struct adc128_configuration adc128_config[] = {
+ { adc128s052_channels, ARRAY_SIZE(adc128s052_channels) },
+ { adc122s021_channels, ARRAY_SIZE(adc122s021_channels) },
+};
+
static const struct iio_info adc128_info = {
.read_raw = adc128_read_raw,
.driver_module = THIS_MODULE,
@@ -112,6 +128,7 @@ static int adc128_probe(struct spi_device *spi)
{
struct iio_dev *indio_dev;
struct adc128 *adc;
+ int config = spi_get_device_id(spi)->driver_data;
int ret;
indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));
@@ -128,8 +145,8 @@ static int adc128_probe(struct spi_device *spi)
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &adc128_info;
- indio_dev->channels = adc128_channels;
- indio_dev->num_channels = ARRAY_SIZE(adc128_channels);
+ indio_dev->channels = adc128_config[config].channels;
+ indio_dev->num_channels = adc128_config[config].num_channels;
adc->reg = devm_regulator_get(&spi->dev, "vref");
if (IS_ERR(adc->reg))
@@ -158,7 +175,8 @@ static int adc128_remove(struct spi_device *spi)
}
static const struct spi_device_id adc128_id[] = {
- { "adc128s052", 0},
+ { "adc128s052", 0}, /* index into adc128_config */
+ { "adc122s021", 1},
{ }
};
MODULE_DEVICE_TABLE(spi, adc128_id);