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Commit a684a0c7 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

staging:iio:ad7192: Mark channels as unsigned 



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: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 74aa9338

drivers/staging/iio/adc/ad7192.c

+3 −3
Original line number Diff line number Diff line
@@ -945,7 +945,7 @@ static const struct iio_info ad7195_info = { 
	  IIO_CHAN_INFO_SCALE_SHARED_BIT,				\

	  .address = _address,						\

	  .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)				\

	{ .type = IIO_VOLTAGE,						\
@@ -955,7 +955,7 @@ static const struct iio_info ad7195_info = { 
	  IIO_CHAN_INFO_SCALE_SHARED_BIT,				\

	  .address = _address,						\

	  .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)				\

	{ .type = IIO_TEMP,						\
@@ -965,7 +965,7 @@ static const struct iio_info ad7195_info = { 
	  IIO_CHAN_INFO_SCALE_SEPARATE_BIT,				\

	  .address = _address,						\

	  .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[] = {

	AD7192_CHAN_DIFF(1, 2, NULL, AD7192_CH_AIN1P_AIN2M, 0),