diff options
| author | Adriana Reus <adriana.reus@intel.com> | 2015-06-12 18:10:23 +0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-07-19 13:48:01 +0300 |
| commit | 2acbe15f8ae539809ef8169a65a8d859cf932530 (patch) | |
| tree | 27ab1fad9aadfcb471f684b499177f655bc38132 /drivers/iio | |
| parent | b220da654d268c79f420fbfac6a35eb420b9cc4b (diff) | |
| download | linux-2acbe15f8ae539809ef8169a65a8d859cf932530.tar.xz | |
iio: inv-mpu: Specify the expected format/precision for write channels
The gyroscope needs IIO_VAL_INT_PLUS_NANO for the scale channel and
unless specified write returns MICRO by default.
This needs to be properly specified so that write operations into scale
have the expected behaviour.
Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c index 17d4bb15be4d..65ce86837177 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c @@ -431,6 +431,23 @@ static int inv_mpu6050_write_gyro_scale(struct inv_mpu6050_state *st, int val) return -EINVAL; } +static int inv_write_raw_get_fmt(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_SCALE: + switch (chan->type) { + case IIO_ANGL_VEL: + return IIO_VAL_INT_PLUS_NANO; + default: + return IIO_VAL_INT_PLUS_MICRO; + } + default: + return IIO_VAL_INT_PLUS_MICRO; + } + + return -EINVAL; +} static int inv_mpu6050_write_accel_scale(struct inv_mpu6050_state *st, int val) { int result, i; @@ -696,6 +713,7 @@ static const struct iio_info mpu_info = { .driver_module = THIS_MODULE, .read_raw = &inv_mpu6050_read_raw, .write_raw = &inv_mpu6050_write_raw, + .write_raw_get_fmt = &inv_write_raw_get_fmt, .attrs = &inv_attribute_group, .validate_trigger = inv_mpu6050_validate_trigger, }; |