allow to specify channels resolution and compute shift assuming
16-bit registers and MSB allocation
Signed-off-by: Peter Meerwald <pmeerw@xxxxxxxxxx>
Cc: Oleksandr Kravchenko <o.v.kravchenko@xxxxxxxxxxxxxxx>
---
drivers/iio/accel/bma180.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index a25b060..6e940b0 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -474,7 +474,7 @@ static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
{ },
};
-#define BMA180_ACC_CHANNEL(_axis) { \
+#define BMA180_ACC_CHANNEL(_axis, _bits) { \
.type = IIO_ACCEL, \
.modified = 1, \
.channel2 = IIO_MOD_##_axis, \
@@ -484,9 +484,9 @@ static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
.scan_index = AXIS_##_axis, \
.scan_type = { \
.sign = 's', \
- .realbits = 14, \
+ .realbits = _bits, \
.storagebits = 16, \
- .shift = 2, \
+ .shift = 16 - _bits, \
}, \
.ext_info = bma180_ext_info, \
}
@@ -504,9 +504,9 @@ static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
}
static const struct iio_chan_spec bma180_channels[] = {
- BMA180_ACC_CHANNEL(X),
- BMA180_ACC_CHANNEL(Y),
- BMA180_ACC_CHANNEL(Z),
+ BMA180_ACC_CHANNEL(X, 14),
+ BMA180_ACC_CHANNEL(Y, 14),
+ BMA180_ACC_CHANNEL(Z, 14),
BMA180_TEMP_CHANNEL,
IIO_CHAN_SOFT_TIMESTAMP(4),
};
--
1.9.1
--
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