From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from saturn.retrosnub.co.uk ([178.18.118.26]:54077 "EHLO saturn.retrosnub.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753197AbaECTfp (ORCPT ); Sat, 3 May 2014 15:35:45 -0400 Message-ID: <5365456E.20703@kernel.org> Date: Sat, 03 May 2014 20:37:18 +0100 From: Jonathan Cameron MIME-Version: 1.0 To: Srinivas Pandruvada CC: linux-iio@vger.kernel.org Subject: Re: [PATCH 08/16] iio: hid-sensors: Pressure: adjust scale and offset References: <1397863356-2470-1-git-send-email-srinivas.pandruvada@linux.intel.com> <1397863356-2470-8-git-send-email-srinivas.pandruvada@linux.intel.com> In-Reply-To: <1397863356-2470-8-git-send-email-srinivas.pandruvada@linux.intel.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org On 19/04/14 00:22, Srinivas Pandruvada wrote: > Using units and unit exponent to calculate scale which is compliant > to IIO ABI. > > Signed-off-by: Srinivas Pandruvada Applied > --- > drivers/iio/pressure/hid-sensor-press.c | 17 +++++++++++++---- > 1 file changed, 13 insertions(+), 4 deletions(-) > > diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c > index e0e6409..ff69da4 100644 > --- a/drivers/iio/pressure/hid-sensor-press.c > +++ b/drivers/iio/pressure/hid-sensor-press.c > @@ -36,6 +36,10 @@ struct press_state { > struct hid_sensor_common common_attributes; > struct hid_sensor_hub_attribute_info press_attr; > u32 press_data; > + int scale_pre_decml; > + int scale_post_decml; > + int scale_precision; > + int value_offset; > }; > > /* Channel definitions */ > @@ -102,12 +106,12 @@ static int press_read_raw(struct iio_dev *indio_dev, > ret_type = IIO_VAL_INT; > break; > case IIO_CHAN_INFO_SCALE: > - *val = press_state->press_attr.units; > - ret_type = IIO_VAL_INT; > + *val = press_state->scale_pre_decml; > + *val2 = press_state->scale_post_decml; > + ret_type = press_state->scale_precision; > break; > case IIO_CHAN_INFO_OFFSET: > - *val = hid_sensor_convert_exponent( > - press_state->press_attr.unit_expo); > + *val = press_state->value_offset; > ret_type = IIO_VAL_INT; > break; > case IIO_CHAN_INFO_SAMP_FREQ: > @@ -229,6 +233,11 @@ static int press_parse_report(struct platform_device *pdev, > dev_dbg(&pdev->dev, "press %x:%x\n", st->press_attr.index, > st->press_attr.report_id); > > + st->scale_precision = hid_sensor_format_scale( > + HID_USAGE_SENSOR_PRESSURE, > + &st->press_attr, > + &st->scale_pre_decml, &st->scale_post_decml); > + > /* Set Sensitivity field ids, when there is no individual modifier */ > if (st->common_attributes.sensitivity.index < 0) { > sensor_hub_input_get_attribute_info(hsdev, >