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Commit 6377aa49 authored by Peter Meerwald's avatar Peter Meerwald Committed by Jonathan Cameron
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iio:bma180: Prepare for accelerometer channels with different resolutions 



allow to specify channels resolution and compute shift assuming
16-bit registers and MSB allocation

Signed-off-by: default avatarPeter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent c1949ec1

drivers/iio/accel/bma180.c

+6 −6
Original line number Diff line number Diff line
@@ -476,7 +476,7 @@ 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,					\
@@ -486,9 +486,9 @@ 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,					\

}
@@ -506,9 +506,9 @@ 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),

};