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staging:iio:ad7192: Mark channels as unsigned

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The values reported by the AD7793 are unsigned.
	In uniploar mode:
			0x000000 is zeroscale
			0xffffff is fullscale
	In bipolar mode:
			0x000000 is negative fullscale
			0x800000 is zeroscale
			0xffffff is positive fullscale

In bipolar mode there is a binary offset, but the values are still unsigned.

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 74aa933894
commit a684a0c711
1 changed files with 3 additions and 3 deletions
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6
drivers/staging/iio/adc/ad7192.c
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@ -945,7 +945,7 @@ static const struct iio_info ad7195_info = {
IIO_CHAN_INFO_SCALE_SHARED_BIT, \ IIO_CHAN_INFO_SCALE_SHARED_BIT, \
.address = _address, \ .address = _address, \
.scan_index = _si, \ .scan_index = _si, \
.scan_type = IIO_ST('s', 24, 32, 0)} .scan_type = IIO_ST('u', 24, 32, 0)}
#define AD7192_CHAN(_chan, _address, _si) \ #define AD7192_CHAN(_chan, _address, _si) \
{ .type = IIO_VOLTAGE, \ { .type = IIO_VOLTAGE, \
@ -955,7 +955,7 @@ static const struct iio_info ad7195_info = {
IIO_CHAN_INFO_SCALE_SHARED_BIT, \ IIO_CHAN_INFO_SCALE_SHARED_BIT, \
.address = _address, \ .address = _address, \
.scan_index = _si, \ .scan_index = _si, \
.scan_type = IIO_ST('s', 24, 32, 0)} .scan_type = IIO_ST('u', 24, 32, 0)}
#define AD7192_CHAN_TEMP(_chan, _address, _si) \ #define AD7192_CHAN_TEMP(_chan, _address, _si) \
{ .type = IIO_TEMP, \ { .type = IIO_TEMP, \
@ -965,7 +965,7 @@ static const struct iio_info ad7195_info = {
IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \ IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
.address = _address, \ .address = _address, \
.scan_index = _si, \ .scan_index = _si, \
.scan_type = IIO_ST('s', 24, 32, 0)} .scan_type = IIO_ST('u', 24, 32, 0)}
static struct iio_chan_spec ad7192_channels[] = { static struct iio_chan_spec ad7192_channels[] = {
AD7192_CHAN_DIFF(1, 2, NULL, AD7192_CH_AIN1P_AIN2M, 0), AD7192_CHAN_DIFF(1, 2, NULL, AD7192_CH_AIN1P_AIN2M, 0),