From patchwork Sat Jul 31 03:25:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ye Xiang X-Patchwork-Id: 489967 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82167C4338F for ; Sat, 31 Jul 2021 03:22:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 51BF660F48 for ; Sat, 31 Jul 2021 03:22:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231429AbhGaDWg (ORCPT ); Fri, 30 Jul 2021 23:22:36 -0400 Received: from mga18.intel.com ([134.134.136.126]:37975 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231395AbhGaDWf (ORCPT ); Fri, 30 Jul 2021 23:22:35 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10061"; a="200408406" X-IronPort-AV: E=Sophos;i="5.84,283,1620716400"; d="scan'208";a="200408406" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Jul 2021 20:22:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,283,1620716400"; d="scan'208";a="439414699" Received: from host.sh.intel.com ([10.239.154.115]) by fmsmga007.fm.intel.com with ESMTP; 30 Jul 2021 20:22:27 -0700 From: Ye Xiang To: jikos@kernel.org, jic23@kernel.org, srinivas.pandruvada@linux.intel.com Cc: linux-input@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Ye Xiang Subject: [PATCH] iio: hid-sensor-press: Add timestamp channel Date: Sat, 31 Jul 2021 11:25:56 +0800 Message-Id: <20210731032556.26813-1-xiang.ye@intel.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Each sample has a timestamp field with this change. This timestamp may be from the sensor hub when present or local kernel timestamp. The unit of timestamp is nanosecond. Signed-off-by: Ye Xiang --- drivers/iio/pressure/hid-sensor-press.c | 40 +++++++++++++++---------- 1 file changed, 24 insertions(+), 16 deletions(-) diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c index c416d261e3e3..b365483bd09e 100644 --- a/drivers/iio/pressure/hid-sensor-press.c +++ b/drivers/iio/pressure/hid-sensor-press.c @@ -16,17 +16,24 @@ #include #include "../common/hid-sensors/hid-sensor-trigger.h" -#define CHANNEL_SCAN_INDEX_PRESSURE 0 +enum { + CHANNEL_SCAN_INDEX_PRESSURE, + CHANNEL_SCAN_INDEX_TIMESTAMP, +}; struct press_state { struct hid_sensor_hub_callbacks callbacks; struct hid_sensor_common common_attributes; struct hid_sensor_hub_attribute_info press_attr; - u32 press_data; + struct { + u32 press_data; + u64 timestamp __aligned(8); + } scan; int scale_pre_decml; int scale_post_decml; int scale_precision; int value_offset; + s64 timestamp; }; static const u32 press_sensitivity_addresses[] = { @@ -44,7 +51,9 @@ static const struct iio_chan_spec press_channels[] = { BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS), .scan_index = CHANNEL_SCAN_INDEX_PRESSURE, - } + }, + IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP) + }; /* Adjust channel real bits based on report descriptor */ @@ -157,14 +166,6 @@ static const struct iio_info press_info = { .write_raw = &press_write_raw, }; -/* Function to push data to buffer */ -static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data, - int len) -{ - dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n"); - iio_push_to_buffers(indio_dev, data); -} - /* Callback handler to send event after all samples are received and captured */ static int press_proc_event(struct hid_sensor_hub_device *hsdev, unsigned usage_id, @@ -174,10 +175,13 @@ static int press_proc_event(struct hid_sensor_hub_device *hsdev, struct press_state *press_state = iio_priv(indio_dev); dev_dbg(&indio_dev->dev, "press_proc_event\n"); - if (atomic_read(&press_state->common_attributes.data_ready)) - hid_sensor_push_data(indio_dev, - &press_state->press_data, - sizeof(press_state->press_data)); + if (atomic_read(&press_state->common_attributes.data_ready)) { + if (!press_state->timestamp) + press_state->timestamp = iio_get_time_ns(indio_dev); + + iio_push_to_buffers_with_timestamp( + indio_dev, &press_state->scan, press_state->timestamp); + } return 0; } @@ -194,9 +198,13 @@ static int press_capture_sample(struct hid_sensor_hub_device *hsdev, switch (usage_id) { case HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE: - press_state->press_data = *(u32 *)raw_data; + press_state->scan.press_data = *(u32 *)raw_data; ret = 0; break; + case HID_USAGE_SENSOR_TIME_TIMESTAMP: + press_state->timestamp = hid_sensor_convert_timestamp( + &press_state->common_attributes, *(s64 *)raw_data); + break; default: break; }