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[3.16.y-ckt,006/110] iio: adc: xilinx: Fix VREFP scale

Message ID 1433512713-22984-7-git-send-email-luis.henriques@canonical.com
State New
Headers show

Commit Message

Luis Henriques June 5, 2015, 1:56 p.m. UTC 
3.16.7-ckt13 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Betker <thomas.betker@rohde-schwarz.com>

commit 00db4e52f4541965f7fda225eb458a75f892017b upstream.

The scaling factor for VREFP is 3.0/4096, not 1.0/4096; fix this to get
correct readings.

Signed-off-by: Thomas Betker <thomas.betker@rohde-schwarz.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---
 drivers/iio/adc/xilinx-xadc-core.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
index 2a7ff1d428ef..4976aed06344 100644
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -856,6 +856,7 @@  static int xadc_read_raw(struct iio_dev *indio_dev,
 			switch (chan->address) {
 			case XADC_REG_VCCINT:
 			case XADC_REG_VCCAUX:
+			case XADC_REG_VREFP:
 			case XADC_REG_VCCBRAM:
 			case XADC_REG_VCCPINT:
 			case XADC_REG_VCCPAUX: