| 9dc9961dca37379fd128508aac37e9f4928ee18f |
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19-Oct-2011 |
Lars-Peter Clausen <lars@metafoo.de> |
staging:iio:dac:ad5791: Allow asymmetrical reference voltages
The ad5791 currently assumes that the negative and positive supply have the
same absolute value, which is not necessarily true. This patch introduces a
offset attribute which will contain the negative supply voltage scaled
according to the iio spec. The raw attribute now accepts values in the range
of 0 to max instead of -max/2 to max/2.
While we are at it also fix the vref span calculation. Since both positive and
negative reference voltages are specificed as absolute values we need to add
them and not subtract them to get the reference voltage span.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
/drivers/staging/iio/dac/ad5791.h
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| c5b99396c70a1287bd49813121da37a828f69d23 |
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02-Sep-2011 |
Jonathan Cameron <jic23@cam.ac.uk> |
staging:iio:dac:ad5791 chan spec conversion.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Michael Hennerich <Michael.Hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
/drivers/staging/iio/dac/ad5791.h
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| f5730d52ba97cf58e4468b46ebbb49d704e23d20 |
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27-Jun-2011 |
Jonathan Cameron <jic23@cam.ac.uk> |
staging:iio:dac:ad5791: allocate chip state with iio_dev and use iio_priv for access.
Slightly fiddly case with two regulators - could reorder, but this is the approach with
smallest likely impact.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
/drivers/staging/iio/dac/ad5791.h
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| ba1c2bb2cc29eada78a6d35488291892431918e5 |
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27-Apr-2011 |
Michael Hennerich <michael.hennerich@analog.com> |
IIO: DAC: AD5791: Add support for the AD5760/AD5780 High Resolution DACs
Add support for the AD5760/AD5780 High Resolution Voltage Output DACs
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
/drivers/staging/iio/dac/ad5791.h
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| 69d900a69567b2cc217412e894a2c03218d23beb |
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18-Apr-2011 |
Michael Hennerich <michael.hennerich@analog.com> |
staging: IIO: DAC: New driver for AD5791/AD5781 High Resolution Voltage Output DACs
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
/drivers/staging/iio/dac/ad5791.h
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