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staging:iio:ad7793: Add ad7785 support

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The ad7785 is similar to the ad7792/ad7793, but has 20 bit wide data samples.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2012-08-10 17:36:00 +01:00 • committed by Jonathan Cameron
parent 525e643e48
commit 8c29ecd362
2 changed files with 19 additions and 12 deletions
drivers/staging/iio/adc
Kconfigad7793.c

4
drivers/staging/iio/adc/Kconfig
View file

@ -113,8 +113,8 @@ config AD7793
depends on SPI
select AD_SIGMA_DELTA
help
Say yes here to build support for Analog Devices AD7792, AD7793, AD7794
and AD7795 SPI analog to digital converters (ADC).
Say yes here to build support for Analog Devices AD7785, AD7792, AD7793,
AD7794 and AD7795 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

27
drivers/staging/iio/adc/ad7793.c
View file

@ -1,5 +1,5 @@
/*
* AD7792/AD7793/AD7794/AD7795 SPI ADC driver
* AD7785/AD7792/AD7793/AD7794/AD7795 SPI ADC driver
*
* Copyright 2011-2012 Analog Devices Inc.
*
@ -54,6 +54,7 @@ struct ad7793_state {
};
enum ad7793_supported_device_ids {
ID_AD7785,
ID_AD7792,
ID_AD7793,
ID_AD7794,
@ -386,14 +387,14 @@ static const struct iio_info ad7793_info = {
.driver_module = THIS_MODULE,
};
#define DECLARE_AD7793_CHANNELS(_name, _b, _sb) \
#define DECLARE_AD7793_CHANNELS(_name, _b, _sb, _s) \
const struct iio_chan_spec _name##_channels[] = { \
AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
AD_SD_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), 0), \
AD_SD_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), 0), \
AD_SD_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
AD_SD_TEMP_CHANNEL(4, AD7793_CH_TEMP, (_b), (_sb), 0), \
AD_SD_SUPPLY_CHANNEL(5, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), (_s)), \
AD_SD_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), (_s)), \
AD_SD_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), (_s)), \
AD_SD_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), (_s)), \
AD_SD_TEMP_CHANNEL(4, AD7793_CH_TEMP, (_b), (_sb), (_s)), \
AD_SD_SUPPLY_CHANNEL(5, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), (_s)), \
IIO_CHAN_SOFT_TIMESTAMP(6), \
}
@ -411,12 +412,17 @@ const struct iio_chan_spec _name##_channels[] = { \
IIO_CHAN_SOFT_TIMESTAMP(9), \
}
static DECLARE_AD7793_CHANNELS(ad7792, 16, 32);
static DECLARE_AD7793_CHANNELS(ad7793, 24, 32);
static DECLARE_AD7793_CHANNELS(ad7785, 20, 32, 4);
static DECLARE_AD7793_CHANNELS(ad7792, 16, 32, 0);
static DECLARE_AD7793_CHANNELS(ad7793, 24, 32, 0);
static DECLARE_AD7795_CHANNELS(ad7794, 16, 32);
static DECLARE_AD7795_CHANNELS(ad7795, 24, 32);
static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
[ID_AD7785] = {
.channels = ad7785_channels,
.num_channels = ARRAY_SIZE(ad7785_channels),
},
[ID_AD7792] = {
.channels = ad7792_channels,
.num_channels = ARRAY_SIZE(ad7792_channels),
@ -535,6 +541,7 @@ static int ad7793_remove(struct spi_device *spi)
}
static const struct spi_device_id ad7793_id[] = {
{"ad7785", ID_AD7785},
{"ad7792", ID_AD7792},
{"ad7793", ID_AD7793},
{"ad7794", ID_AD7794},