From patchwork Tue Jan 5 07:22:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ye Xiang X-Patchwork-Id: 11998237 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,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 81A62C433E6 for ; Tue, 5 Jan 2021 07:22:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 535B0225AC for ; Tue, 5 Jan 2021 07:22:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726810AbhAEHVs (ORCPT ); Tue, 5 Jan 2021 02:21:48 -0500 Received: from mga02.intel.com ([134.134.136.20]:49506 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725290AbhAEHVs (ORCPT ); Tue, 5 Jan 2021 02:21:48 -0500 IronPort-SDR: 9/7qXuQrg8GINnTqQS0AOEodwGc5QpHfOfQgsfrmBAl0i4LFqxALIm5ckxp+3FpE+HpqBn8So1 S0ilfa7cwe+A== X-IronPort-AV: E=McAfee;i="6000,8403,9854"; a="164137784" X-IronPort-AV: E=Sophos;i="5.78,476,1599548400"; d="scan'208";a="164137784" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jan 2021 23:21:02 -0800 IronPort-SDR: e+29M8WxWK4qj6Oc7kOO/J0u5IiJTFpgb6CXRQUEVL45xiJelu758Elxcd81Mt1661dlynMLux dodDPpYNVkhg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,476,1599548400"; d="scan'208";a="350260584" Received: from host.sh.intel.com ([10.239.154.115]) by fmsmga008.fm.intel.com with ESMTP; 04 Jan 2021 23:20:56 -0800 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 v3 3/6] iio: hid-sensor-als: Add timestamp channel Date: Tue, 5 Jan 2021 15:22:00 +0800 Message-Id: <20210105072203.5701-4-xiang.ye@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210105072203.5701-1-xiang.ye@intel.com> References: <20210105072203.5701-1-xiang.ye@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-iio@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. And the unit of timestamp is nanosecond. Signed-off-by: Ye Xiang --- drivers/iio/light/hid-sensor-als.c | 39 ++++++++++++++++++------------ 1 file changed, 23 insertions(+), 16 deletions(-) diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c index 5460a744dbd0..afcdb424bfb8 100644 --- a/drivers/iio/light/hid-sensor-als.c +++ b/drivers/iio/light/hid-sensor-als.c @@ -22,15 +22,21 @@ enum { CHANNEL_SCAN_INDEX_MAX }; +#define CHANNEL_SCAN_INDEX_TIMESTAMP CHANNEL_SCAN_INDEX_MAX + struct als_state { struct hid_sensor_hub_callbacks callbacks; struct hid_sensor_common common_attributes; struct hid_sensor_hub_attribute_info als_illum; - u32 illum[CHANNEL_SCAN_INDEX_MAX]; + struct { + u32 illum[CHANNEL_SCAN_INDEX_MAX]; + u64 timestamp __aligned(8); + } scan; int scale_pre_decml; int scale_post_decml; int scale_precision; int value_offset; + s64 timestamp; }; static const u32 als_sensitivity_addresses[] = { @@ -59,7 +65,8 @@ static const struct iio_chan_spec als_channels[] = { BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS), .scan_index = CHANNEL_SCAN_INDEX_ILLUM, - } + }, + IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP) }; /* Adjust channel real bits based on report descriptor */ @@ -173,14 +180,6 @@ static const struct iio_info als_info = { .write_raw = &als_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 als_proc_event(struct hid_sensor_hub_device *hsdev, unsigned usage_id, @@ -190,10 +189,14 @@ static int als_proc_event(struct hid_sensor_hub_device *hsdev, struct als_state *als_state = iio_priv(indio_dev); dev_dbg(&indio_dev->dev, "als_proc_event\n"); - if (atomic_read(&als_state->common_attributes.data_ready)) - hid_sensor_push_data(indio_dev, - &als_state->illum, - sizeof(als_state->illum)); + if (atomic_read(&als_state->common_attributes.data_ready)) { + if (!als_state->timestamp) + als_state->timestamp = iio_get_time_ns(indio_dev); + + iio_push_to_buffers_with_timestamp(indio_dev, &als_state->scan, + als_state->timestamp); + als_state->timestamp = 0; + } return 0; } @@ -211,10 +214,14 @@ static int als_capture_sample(struct hid_sensor_hub_device *hsdev, switch (usage_id) { case HID_USAGE_SENSOR_LIGHT_ILLUM: - als_state->illum[CHANNEL_SCAN_INDEX_INTENSITY] = sample_data; - als_state->illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data; + als_state->scan.illum[CHANNEL_SCAN_INDEX_INTENSITY] = sample_data; + als_state->scan.illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data; ret = 0; break; + case HID_USAGE_SENSOR_TIME_TIMESTAMP: + als_state->timestamp = hid_sensor_convert_timestamp(&als_state->common_attributes, + *(s64 *)raw_data); + break; default: break; }