[PATCH 4.4 100/146] iio: proximity: as3935: correct IIO_CHAN_INFO_RAW output

[Greg Kroah-Hartman]

4.4-stable review patch.  If anyone has any objections, please let me know.

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

From: Matt Ranostay <mranos...@gmail.com>

commit 5138806f16c74c7cb8ac3e408a859c79eb7c9567 upstream.

IIO_CHAN_INFO_RAW was returning processed data which was incorrect.
This also adds the IIO_CHAN_INFO_SCALE value to convert to a processed value.

Signed-off-by: Matt Ranostay <mranos...@gmail.com>
Signed-off-by: Jonathan Cameron <ji...@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935 |    2 +-
 drivers/iio/proximity/as3935.c                           |   10 ++++++++--
 2 files changed, 9 insertions(+), 3 deletions(-)

--- a/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935
+++ b/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935
@@ -1,4 +1,4 @@
-What           /sys/bus/iio/devices/iio:deviceX/in_proximity_raw
+What           /sys/bus/iio/devices/iio:deviceX/in_proximity_input
 Date:          March 2014
 KernelVersion: 3.15
 Contact:       Matt Ranostay <mranos...@gmail.com>
--- a/drivers/iio/proximity/as3935.c
+++ b/drivers/iio/proximity/as3935.c
@@ -72,7 +72,8 @@ static const struct iio_chan_spec as3935
                .type           = IIO_PROXIMITY,
                .info_mask_separate =
                        BIT(IIO_CHAN_INFO_RAW) |
-                       BIT(IIO_CHAN_INFO_PROCESSED),
+                       BIT(IIO_CHAN_INFO_PROCESSED) |
+                       BIT(IIO_CHAN_INFO_SCALE),
                .scan_index     = 0,
                .scan_type = {
                        .sign           = 'u',
@@ -181,7 +182,12 @@ static int as3935_read_raw(struct iio_de
                /* storm out of range */
                if (*val == AS3935_DATA_MASK)
                        return -EINVAL;
-               *val *= 1000;
+
+               if (m == IIO_CHAN_INFO_PROCESSED)
+                       *val *= 1000;
+               break;
+       case IIO_CHAN_INFO_SCALE:
+               *val = 1000;
                break;
        default:
                return -EINVAL;