iio: adc: xilinx: Fix VREFN sign

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The VREFN channel is bipolar, not unipolar. Small negative values do
occur (e.g., -1mV), and unsigned conversion maps them incorrectly to
large positive values (about +1V), so fix this.

Signed-off-by: Thomas Betker <thomas.betker@rohde-schwarz.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

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Thomas Betker 2015-04-15 21:11:50 +02:00 • committed by Jonathan Cameron

parent 00db4e52f4

commit 97ffae1d30

1 changed files with 1 additions and 1 deletions

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drivers/iio/adc/xilinx-xadc-core.c

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