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Message-Id: <20190204124441.18079-1-ricardo@ribalda.com>
Date: Mon, 4 Feb 2019 13:44:41 +0100
From: Ricardo Ribalda Delgado <ricardo@...alda.com>
To: Jonathan Cameron <jic23@...nel.org>, linux-iio@...r.kernel.org,
Alexandru Ardelean <ardeleanalex@...il.com>,
linux-kernel@...r.kernel.org
Cc: Ricardo Ribalda Delgado <ricardo@...alda.com>
Subject: [PATCH v4] iio: adc: ad7476: Add support for TI ADS786X ADCs
Add support for Texas Instruments ADS7866, ADS7867 and ADS7868
8/10/12 bit Single channel ADC.
Datasheet: http://www.ti.com/lit/ds/symlink/ads7868.pdf
Signed-off-by: Ricardo Ribalda Delgado <ricardo@...alda.com>
---
v4: Changes by Alexandru Ardelean <ardeleanalex@...il.com>
Break Kconfig into a table
drivers/iio/adc/Kconfig | 11 +++++++----
drivers/iio/adc/ad7476.c | 20 ++++++++++++++++++++
2 files changed, 27 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index f9354e5ee65c..3d82727fa977 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -57,14 +57,17 @@ config AD7298
module will be called ad7298.
config AD7476
- tristate "Analog Devices AD7476 and similar 1-channel ADCs driver"
+ tristate "Analog Devices AD7476 1-channel ADCs driver and other similar devices from AD an TI"
depends on SPI
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
- Say yes here to build support for Analog Devices AD7273, AD7274, AD7276,
- AD7277, AD7278, AD7475, AD7476, AD7477, AD7478, AD7466, AD7467, AD7468,
- AD7495, AD7910, AD7920, AD7920 SPI analog to digital converters (ADC).
+ Say yes here to build support for the following SPI analog to
+ digital converters (ADCs):
+ Analog Devices: AD7273, AD7274, AD7276, AD7277, AD7278, AD7475,
+ AD7476, AD7477, AD7478, AD7466, AD7467, AD7468, AD7495, AD7910,
+ AD7920.
+ Texas Instruments: ADS7866, ADS7867, ADS7868.
To compile this driver as a module, choose M here: the
module will be called ad7476.
diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
index 0549686b9ef8..76747488044b 100644
--- a/drivers/iio/adc/ad7476.c
+++ b/drivers/iio/adc/ad7476.c
@@ -59,6 +59,9 @@ enum ad7476_supported_device_ids {
ID_ADC081S,
ID_ADC101S,
ID_ADC121S,
+ ID_ADS7866,
+ ID_ADS7867,
+ ID_ADS7868,
};
static irqreturn_t ad7476_trigger_handler(int irq, void *p)
@@ -157,6 +160,8 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
#define AD7940_CHAN(bits) _AD7476_CHAN((bits), 15 - (bits), \
BIT(IIO_CHAN_INFO_RAW))
#define AD7091R_CHAN(bits) _AD7476_CHAN((bits), 16 - (bits), 0)
+#define ADS786X_CHAN(bits) _AD7476_CHAN((bits), 12 - (bits), \
+ BIT(IIO_CHAN_INFO_RAW))
static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
[ID_AD7091R] = {
@@ -209,6 +214,18 @@ static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
.channel[0] = ADC081S_CHAN(12),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
},
+ [ID_ADS7866] = {
+ .channel[0] = ADS786X_CHAN(12),
+ .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+ },
+ [ID_ADS7867] = {
+ .channel[0] = ADS786X_CHAN(10),
+ .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+ },
+ [ID_ADS7868] = {
+ .channel[0] = ADS786X_CHAN(8),
+ .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+ },
};
static const struct iio_info ad7476_info = {
@@ -314,6 +331,9 @@ static const struct spi_device_id ad7476_id[] = {
{"adc081s", ID_ADC081S},
{"adc101s", ID_ADC101S},
{"adc121s", ID_ADC121S},
+ {"ads7866", ID_ADS7866},
+ {"ads7867", ID_ADS7867},
+ {"ads7868", ID_ADS7868},
{}
};
MODULE_DEVICE_TABLE(spi, ad7476_id);
--
2.20.1
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