The AD7193 is mostly register map compatible to the AD7192. The main
difference is that it has 8 instead of 4 inputs, so the way the input
channels are selected is slightly different.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/staging/iio/adc/Kconfig | 4 +--
drivers/staging/iio/adc/ad7192.c | 76 ++++++++++++++++++++++++++++++++--------
2 files changed, 63 insertions(+), 17 deletions(-)
diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig
index 58d4517..a700f19 100644
--- a/drivers/staging/iio/adc/Kconfig
+++ b/drivers/staging/iio/adc/Kconfig
@@ -58,12 +58,12 @@ config AD7816
temperature sensors and ADC.
config AD7192
- tristate "Analog Devices AD7190 AD7192 AD7195 ADC driver"
+ tristate "Analog Devices AD7190 AD7192 AD7193 AD7195 ADC driver"
depends on SPI
select AD_SIGMA_DELTA
help
Say yes here to build support for Analog Devices AD7190,
- AD7192 or AD7195 SPI analog to digital converters (ADC).
+ AD7192, AD7193 or AD7195 SPI analog to digital converters (ADC).
If unsure, say N (but it's safe to say "Y").
To compile this driver as a module, choose M here: the
diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c
index 92f2b72..f843f19 100644
--- a/drivers/staging/iio/adc/ad7192.c
+++ b/drivers/staging/iio/adc/ad7192.c
@@ -1,7 +1,7 @@
/*
- * AD7190 AD7192 AD7195 SPI ADC driver
+ * AD7190 AD7192 AD7193 AD7195 SPI ADC driver
*
- * Copyright 2011-2012 Analog Devices Inc.
+ * Copyright 2011-2015 Analog Devices Inc.
*
* Licensed under the GPL-2.
*/
@@ -92,26 +92,43 @@
#define AD7192_CONF_CHOP BIT(23) /* CHOP enable */
#define AD7192_CONF_REFSEL BIT(20) /* REFIN1/REFIN2 Reference Select */
-#define AD7192_CONF_CHAN(x) (((1 << (x)) & 0xFF) << 8) /* Channel select */
-#define AD7192_CONF_CHAN_MASK (0xFF << 8) /* Channel select mask */
+#define AD7192_CONF_CHAN(x) ((x) << 8) /* Channel select */
+#define AD7192_CONF_CHAN_MASK (0x7FF << 8) /* Channel select mask */
#define AD7192_CONF_BURN BIT(7) /* Burnout current enable */
#define AD7192_CONF_REFDET BIT(6) /* Reference detect enable */
#define AD7192_CONF_BUF BIT(4) /* Buffered Mode Enable */
#define AD7192_CONF_UNIPOLAR BIT(3) /* Unipolar/Bipolar Enable */
#define AD7192_CONF_GAIN(x) ((x) & 0x7) /* Gain Select */
-#define AD7192_CH_AIN1P_AIN2M 0 /* AIN1(+) - AIN2(-) */
-#define AD7192_CH_AIN3P_AIN4M 1 /* AIN3(+) - AIN4(-) */
-#define AD7192_CH_TEMP 2 /* Temp Sensor */
-#define AD7192_CH_AIN2P_AIN2M 3 /* AIN2(+) - AIN2(-) */
-#define AD7192_CH_AIN1 4 /* AIN1 - AINCOM */
-#define AD7192_CH_AIN2 5 /* AIN2 - AINCOM */
-#define AD7192_CH_AIN3 6 /* AIN3 - AINCOM */
-#define AD7192_CH_AIN4 7 /* AIN4 - AINCOM */
+#define AD7192_CH_AIN1P_AIN2M BIT(0) /* AIN1(+) - AIN2(-) */
+#define AD7192_CH_AIN3P_AIN4M BIT(1) /* AIN3(+) - AIN4(-) */
+#define AD7192_CH_TEMP BIT(2) /* Temp Sensor */
+#define AD7192_CH_AIN2P_AIN2M BIT(3) /* AIN2(+) - AIN2(-) */
+#define AD7192_CH_AIN1 BIT(4) /* AIN1 - AINCOM */
+#define AD7192_CH_AIN2 BIT(5) /* AIN2 - AINCOM */
+#define AD7192_CH_AIN3 BIT(6) /* AIN3 - AINCOM */
+#define AD7192_CH_AIN4 BIT(7) /* AIN4 - AINCOM */
+
+#define AD7193_CH_AIN1P_AIN2M 0x000 /* AIN1(+) - AIN2(-) */
+#define AD7193_CH_AIN3P_AIN4M 0x001 /* AIN3(+) - AIN4(-) */
+#define AD7193_CH_AIN5P_AIN6M 0x002 /* AIN5(+) - AIN6(-) */
+#define AD7193_CH_AIN7P_AIN8M 0x004 /* AIN7(+) - AIN8(-) */
+#define AD7193_CH_TEMP 0x100 /* Temp senseor */
+#define AD7193_CH_AIN2P_AIN2M 0x200 /* AIN2(+) - AIN2(-) */
+#define AD7193_CH_AIN1 0x401 /* AIN1 - AINCOM */
+#define AD7193_CH_AIN2 0x402 /* AIN2 - AINCOM */
+#define AD7193_CH_AIN3 0x404 /* AIN3 - AINCOM */
+#define AD7193_CH_AIN4 0x408 /* AIN4 - AINCOM */
+#define AD7193_CH_AIN5 0x410 /* AIN5 - AINCOM */
+#define AD7193_CH_AIN6 0x420 /* AIN6 - AINCOM */
+#define AD7193_CH_AIN7 0x440 /* AIN7 - AINCOM */
+#define AD7193_CH_AIN8 0x480 /* AIN7 - AINCOM */
+#define AD7193_CH_AINCOM 0x600 /* AINCOM - AINCOM */
/* ID Register Bit Designations (AD7192_REG_ID) */
#define ID_AD7190 0x4
#define ID_AD7192 0x0
+#define ID_AD7193 0x2
#define ID_AD7195 0x6
#define AD7192_ID_MASK 0x0F
@@ -607,6 +624,24 @@ static const struct iio_chan_spec ad7192_channels[] = {
IIO_CHAN_SOFT_TIMESTAMP(8),
};
+static const struct iio_chan_spec ad7193_channels[] = {
+ AD_SD_DIFF_CHANNEL(0, 1, 2, AD7193_CH_AIN1P_AIN2M, 24, 32, 0),
+ AD_SD_DIFF_CHANNEL(1, 3, 4, AD7193_CH_AIN3P_AIN4M, 24, 32, 0),
+ AD_SD_DIFF_CHANNEL(2, 5, 6, AD7193_CH_AIN5P_AIN6M, 24, 32, 0),
+ AD_SD_DIFF_CHANNEL(3, 7, 8, AD7193_CH_AIN7P_AIN8M, 24, 32, 0),
+ AD_SD_TEMP_CHANNEL(4, AD7193_CH_TEMP, 24, 32, 0),
+ AD_SD_SHORTED_CHANNEL(5, 2, AD7193_CH_AIN2P_AIN2M, 24, 32, 0),
+ AD_SD_CHANNEL(6, 1, AD7193_CH_AIN1, 24, 32, 0),
+ AD_SD_CHANNEL(7, 2, AD7193_CH_AIN2, 24, 32, 0),
+ AD_SD_CHANNEL(8, 3, AD7193_CH_AIN3, 24, 32, 0),
+ AD_SD_CHANNEL(9, 4, AD7193_CH_AIN4, 24, 32, 0),
+ AD_SD_CHANNEL(10, 5, AD7193_CH_AIN5, 24, 32, 0),
+ AD_SD_CHANNEL(11, 6, AD7193_CH_AIN6, 24, 32, 0),
+ AD_SD_CHANNEL(12, 7, AD7193_CH_AIN7, 24, 32, 0),
+ AD_SD_CHANNEL(13, 8, AD7193_CH_AIN8, 24, 32, 0),
+ IIO_CHAN_SOFT_TIMESTAMP(14),
+};
+
static int ad7192_probe(struct spi_device *spi)
{
const struct ad7192_platform_data *pdata = dev_get_platdata(&spi->dev);
@@ -651,8 +686,18 @@ static int ad7192_probe(struct spi_device *spi)
indio_dev->dev.parent = &spi->dev;
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->modes = INDIO_DIRECT_MODE;
- indio_dev->channels = ad7192_channels;
- indio_dev->num_channels = ARRAY_SIZE(ad7192_channels);
+
+ switch (st->devid) {
+ case ID_AD7193:
+ indio_dev->channels = ad7193_channels;
+ indio_dev->num_channels = ARRAY_SIZE(ad7193_channels);
+ break;
+ default:
+ indio_dev->channels = ad7192_channels;
+ indio_dev->num_channels = ARRAY_SIZE(ad7192_channels);
+ break;
+ }
+
if (st->devid == ID_AD7195)
indio_dev->info = &ad7195_info;
else
@@ -699,6 +744,7 @@ static int ad7192_remove(struct spi_device *spi)
static const struct spi_device_id ad7192_id[] = {
{"ad7190", ID_AD7190},
{"ad7192", ID_AD7192},
+ {"ad7193", ID_AD7193},
{"ad7195", ID_AD7195},
{}
};
@@ -715,5 +761,5 @@ static struct spi_driver ad7192_driver = {
module_spi_driver(ad7192_driver);
MODULE_AUTHOR("Michael Hennerich <hennerich@xxxxxxxxxxxxxxxxxxxx>");
-MODULE_DESCRIPTION("Analog Devices AD7190, AD7192, AD7195 ADC");
+MODULE_DESCRIPTION("Analog Devices AD7190, AD7192, AD7193, AD7195 ADC");
MODULE_LICENSE("GPL v2");
--
2.1.4
--
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