queue-4.19/iio-gyro-bmg160-use-millidegrees-for-temperature-scale.patch

   1 From 40a7198a4a01037003c7ca714f0d048a61e729ac Mon Sep 17 00:00:00 2001
   2 From: Mike Looijmans <mike.looijmans@topic.nl>
   3 Date: Wed, 13 Feb 2019 08:41:47 +0100
   4 Subject: iio/gyro/bmg160: Use millidegrees for temperature scale
   5
   6 From: Mike Looijmans <mike.looijmans@topic.nl>
   7
   8 commit 40a7198a4a01037003c7ca714f0d048a61e729ac upstream.
   9
  10 Standard unit for temperature is millidegrees Celcius, whereas this driver
  11 was reporting in degrees. Fix the scale factor in the driver.
  12
  13 Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
  14 Cc: <Stable@vger.kernel.org>
  15 Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
  16 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  17
  18 ---
  19  drivers/iio/gyro/bmg160_core.c |    6 +++---
  20  1 file changed, 3 insertions(+), 3 deletions(-)
  21
  22 --- a/drivers/iio/gyro/bmg160_core.c
  23 +++ b/drivers/iio/gyro/bmg160_core.c
  24 @@ -582,11 +582,10 @@ static int bmg160_read_raw(struct iio_de
  25         case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
  26                 return bmg160_get_filter(data, val);
  27         case IIO_CHAN_INFO_SCALE:
  28 -               *val = 0;
  29                 switch (chan->type) {
  30                 case IIO_TEMP:
  31 -                       *val2 = 500000;
  32 -                       return IIO_VAL_INT_PLUS_MICRO;
  33 +                       *val = 500;
  34 +                       return IIO_VAL_INT;
  35                 case IIO_ANGL_VEL:
  36                 {
  37                         int i;
  38 @@ -594,6 +593,7 @@ static int bmg160_read_raw(struct iio_de
  39                         for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) {
  40                                 if (bmg160_scale_table[i].dps_range ==
  41                                                         data->dps_range) {
  42 +                                       *val = 0;
  43                                         *val2 = bmg160_scale_table[i].scale;
  44                                         return IIO_VAL_INT_PLUS_MICRO;
  45                                 }