From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ns.pmeerw.net ([87.118.82.44]:59554 "EHLO pmeerw.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751577AbaHSWnc (ORCPT ); Tue, 19 Aug 2014 18:43:32 -0400 From: Peter Meerwald To: Jonathan Cameron Cc: linux-iio@vger.kernel.org, Peter Meerwald , Oleksandr Kravchenko Subject: [PATCH v2 09/11] iio:bma180: Prepare for accelerometer channels with different resolutions Date: Wed, 20 Aug 2014 00:43:24 +0200 Message-Id: <1408488206-2633-10-git-send-email-pmeerw@pmeerw.net> In-Reply-To: <1408488206-2633-1-git-send-email-pmeerw@pmeerw.net> References: <1408488206-2633-1-git-send-email-pmeerw@pmeerw.net> Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org allow to specify channels resolution and compute shift assuming 16-bit registers and MSB allocation Signed-off-by: Peter Meerwald Cc: Oleksandr Kravchenko --- 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