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staging:iio:ad7793: 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: 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 421afe5805
commit e83539092c
1 changed files with 12 additions and 12 deletions
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24
drivers/staging/iio/adc/ad7793.c
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@ -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,
@ -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,
@ -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,
@ -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,
@ -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,
@ -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),
},
@ -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,
@ -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,
@ -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,
@ -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,
@ -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,
@ -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),
},