From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out-164.synserver.de ([212.40.185.164]:1177 "EHLO smtp-out-163.synserver.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753381Ab3I1Ja5 (ORCPT ); Sat, 28 Sep 2013 05:30:57 -0400 From: Lars-Peter Clausen To: Jonathan Cameron Cc: linux-iio@vger.kernel.org, Lars-Peter Clausen , Stefan Roese Subject: [PATCH 24/25] staging:iio:spear_adc: Report scale as fractional value Date: Sat, 28 Sep 2013 11:31:56 +0200 Message-Id: <1380360717-26103-24-git-send-email-lars@metafoo.de> In-Reply-To: <1380360717-26103-1-git-send-email-lars@metafoo.de> References: <1380360717-26103-1-git-send-email-lars@metafoo.de> Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org Move the complexity of calculating the fixed point scale to the core. Signed-off-by: Lars-Peter Clausen Cc: Stefan Roese --- drivers/staging/iio/adc/spear_adc.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/staging/iio/adc/spear_adc.c b/drivers/staging/iio/adc/spear_adc.c index 20f2d55..657e01b 100644 --- a/drivers/staging/iio/adc/spear_adc.c +++ b/drivers/staging/iio/adc/spear_adc.c @@ -168,10 +168,9 @@ static int spear_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - scale_mv = (info->vref_external * 1000) >> DATA_BITS; - *val = scale_mv / 1000; - *val2 = (scale_mv % 1000) * 1000; - return IIO_VAL_INT_PLUS_MICRO; + *val = info->vref_external; + *val2 = DATA_BITS; + return IIO_VAL_FRACTIONAL_LOG2; } return -EINVAL; -- 1.8.0