From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga09.intel.com ([134.134.136.24]:33681 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754544AbaDRXTp (ORCPT ); Fri, 18 Apr 2014 19:19:45 -0400 From: Srinivas Pandruvada To: jic23@kernel.org Cc: linux-iio@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH 08/16] iio: hid-sensors: Pressure: adjust scale and offset Date: Fri, 18 Apr 2014 16:22:28 -0700 Message-Id: <1397863356-2470-8-git-send-email-srinivas.pandruvada@linux.intel.com> In-Reply-To: <1397863356-2470-1-git-send-email-srinivas.pandruvada@linux.intel.com> References: <1397863356-2470-1-git-send-email-srinivas.pandruvada@linux.intel.com> Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org Using units and unit exponent to calculate scale which is compliant to IIO ABI. Signed-off-by: Srinivas Pandruvada --- 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, -- 1.7.11.7