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staging:iio:ad7793: 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>
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Lars-Peter Clausen authored and Jonathan Cameron committed Aug 16, 2012
1 parent 421afe5 commit e835390
Showing 1 changed file with 12 additions and 12 deletions.
24 changes: 12 additions & 12 deletions drivers/staging/iio/adc/ad7793.c
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Original file line number Diff line number Diff line change
Expand Up @@ -722,7 +722,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 0,
.scan_type = IIO_ST('s', 24, 32, 0)
.scan_type = IIO_ST('u', 24, 32, 0)
},
.channel[1] = {
.type = IIO_VOLTAGE,
Expand All @@ -734,7 +734,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 1,
.scan_type = IIO_ST('s', 24, 32, 0)
.scan_type = IIO_ST('u', 24, 32, 0)
},
.channel[2] = {
.type = IIO_VOLTAGE,
Expand All @@ -746,7 +746,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 2,
.scan_type = IIO_ST('s', 24, 32, 0)
.scan_type = IIO_ST('u', 24, 32, 0)
},
.channel[3] = {
.type = IIO_VOLTAGE,
Expand All @@ -759,7 +759,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 3,
.scan_type = IIO_ST('s', 24, 32, 0)
.scan_type = IIO_ST('u', 24, 32, 0)
},
.channel[4] = {
.type = IIO_TEMP,
Expand All @@ -769,7 +769,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
.scan_index = 4,
.scan_type = IIO_ST('s', 24, 32, 0),
.scan_type = IIO_ST('u', 24, 32, 0),
},
.channel[5] = {
.type = IIO_VOLTAGE,
Expand All @@ -780,7 +780,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
.scan_index = 5,
.scan_type = IIO_ST('s', 24, 32, 0),
.scan_type = IIO_ST('u', 24, 32, 0),
},
.channel[6] = IIO_CHAN_SOFT_TIMESTAMP(6),
},
Expand All @@ -795,7 +795,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 0,
.scan_type = IIO_ST('s', 16, 32, 0)
.scan_type = IIO_ST('u', 16, 32, 0)
},
.channel[1] = {
.type = IIO_VOLTAGE,
Expand All @@ -807,7 +807,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 1,
.scan_type = IIO_ST('s', 16, 32, 0)
.scan_type = IIO_ST('u', 16, 32, 0)
},
.channel[2] = {
.type = IIO_VOLTAGE,
Expand All @@ -819,7 +819,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 2,
.scan_type = IIO_ST('s', 16, 32, 0)
.scan_type = IIO_ST('u', 16, 32, 0)
},
.channel[3] = {
.type = IIO_VOLTAGE,
Expand All @@ -832,7 +832,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 3,
.scan_type = IIO_ST('s', 16, 32, 0)
.scan_type = IIO_ST('u', 16, 32, 0)
},
.channel[4] = {
.type = IIO_TEMP,
Expand All @@ -842,7 +842,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
.scan_index = 4,
.scan_type = IIO_ST('s', 16, 32, 0),
.scan_type = IIO_ST('u', 16, 32, 0),
},
.channel[5] = {
.type = IIO_VOLTAGE,
Expand All @@ -853,7 +853,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
.scan_index = 5,
.scan_type = IIO_ST('s', 16, 32, 0),
.scan_type = IIO_ST('u', 16, 32, 0),
},
.channel[6] = IIO_CHAN_SOFT_TIMESTAMP(6),
},
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