From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham 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 137C8C43603 for ; Thu, 19 Dec 2019 06:00:38 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 99F6E227BF for ; Thu, 19 Dec 2019 06:00:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="lWyAL3Sz"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="NoQTv/Fj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 99F6E227BF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:To:From:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=cW4tbz+Qe/vr0yPbCjYtsYxELMcRlzOAPVS+y3PA4F0=; b=lWyAL3SzGZ4oVe Cj9gfblYqGKHeLH4bmn4XRqqmXVADoCesYrQCidSlftVtA6K0vnUc9gKt//sHIl5hR4nTKUtILkZo GrghCbZi3Ub+FZaRSjXPup7MZeIoL+iLwBh3EpL/QOuGnwsJVa/v2sVXdsFUFSbzfvMUwHv7KSMqc NiBVL4JYzCyR7uId48gZtP8ldO9ivJKzsiljuy1XKX11WFhVsYtLcCLqwZ7oCCfG8pAKwxDGv/cRs XZ7DEWI71mHrrdRu2dJ04jJR4WT9dwx/SDbkIjTGyUpcdQEy+aR4atx+P+JPRmQ26a2wGxDboadnu G/JanjVcej9sqG0bnq4Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihorT-00036P-7n; Thu, 19 Dec 2019 06:00:35 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihor7-0002Df-Cv; Thu, 19 Dec 2019 06:00:14 +0000 X-UUID: 7b7d1793262b45c5b15ffc874cdd0f69-20191218 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Reply-To:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=7fCn/ztl4AlC39YFUcLA1Fd5PU/Oyw3txLJ3UdHhRJ8=; b=NoQTv/Fj9uM+eKVXU2ao/khA+tzVXC9AfhLOO8YqZTj9djH6MOrPHtiFabCbn8vvXL3+Bxb9BfpcX5twykeJ2qjY6Bu1x33ye4/SDJYJk4T8r+3e+RNx75nVQqoMnWSHIo1joAzhX60RsQ67qFw56DfDK8Uzx673i77sLc8UjsU=; X-UUID: 7b7d1793262b45c5b15ffc874cdd0f69-20191218 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1436894052; Wed, 18 Dec 2019 22:00:12 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 18 Dec 2019 21:50:25 -0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 19 Dec 2019 13:49:48 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 19 Dec 2019 13:50:12 +0800 From: Jungo Lin To: , , , , Subject: [v6, 3/5] media: videodev2.h: Add new boottime timestamp type Date: Thu, 19 Dec 2019 13:49:28 +0800 Message-ID: <20191219054930.29513-4-jungo.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20191219054930.29513-1-jungo.lin@mediatek.com> References: <20191219054930.29513-1-jungo.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191218_220013_451618_E4408C82 X-CRM114-Status: UNSURE ( 8.29 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Jungo Lin Cc: shik@chromium.org, devicetree@vger.kernel.org, Sean.Cheng@mediatek.com, suleiman@chromium.org, Rynn.Wu@mediatek.com, srv_heupstream@mediatek.com, robh@kernel.org, ryan.yu@mediatek.com, Jerry-ch.Chen@mediatek.com, frankie.chiu@mediatek.com, jungo.lin@mediatek.com, sj.huang@mediatek.com, yuzhao@chromium.org, linux-mediatek@lists.infradead.org, zwisler@chromium.org, ddavenport@chromium.org, frederic.chen@mediatek.com, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org For Camera AR(Augmented Reality) application requires camera timestamps to be reported with CLOCK_BOOTTIME to sync timestamp with other sensor sources. The boottime timestamp is identical to monotonic timestamp, except it also includes any time that the system is suspended. Signed-off-by: Jungo Lin --- Changes from v6: - No change. --- Documentation/media/uapi/v4l/buffer.rst | 11 ++++++++++- include/uapi/linux/videodev2.h | 2 ++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/Documentation/media/uapi/v4l/buffer.rst b/Documentation/media/uapi/v4l/buffer.rst index 9149b57728e5..f45bfce7fddd 100644 --- a/Documentation/media/uapi/v4l/buffer.rst +++ b/Documentation/media/uapi/v4l/buffer.rst @@ -662,13 +662,22 @@ Buffer Flags - 0x00002000 - The buffer timestamp has been taken from the ``CLOCK_MONOTONIC`` clock. To access the same clock outside V4L2, use - :c:func:`clock_gettime`. + :c:func:`clock_gettime` using clock IDs ``CLOCK_MONOTONIC``. * .. _`V4L2-BUF-FLAG-TIMESTAMP-COPY`: - ``V4L2_BUF_FLAG_TIMESTAMP_COPY`` - 0x00004000 - The CAPTURE buffer timestamp has been taken from the corresponding OUTPUT buffer. This flag applies only to mem2mem devices. + * .. _`V4L2_BUF_FLAG_TIMESTAMP_BOOTIME`: + + - ``V4L2_BUF_FLAG_TIMESTAMP_BOOTIME`` + - 0x00008000 + - The buffer timestamp has been taken from the ``CLOCK_BOOTTIME`` + clock. To access the same clock outside V4L2, use + :c:func:`clock_gettime` using clock IDs ``CLOCK_BOOTTIME``. + Identical to CLOCK_MONOTONIC, except it also includes any time that + the system is suspended. * .. _`V4L2-BUF-FLAG-TSTAMP-SRC-MASK`: - ``V4L2_BUF_FLAG_TSTAMP_SRC_MASK`` diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 04481c717fee..74ef9472e702 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -1060,6 +1060,8 @@ static inline __u64 v4l2_timeval_to_ns(const struct timeval *tv) #define V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN 0x00000000 #define V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC 0x00002000 #define V4L2_BUF_FLAG_TIMESTAMP_COPY 0x00004000 +#define V4L2_BUF_FLAG_TIMESTAMP_BOOTIME 0x00008000 + /* Timestamp sources. */ #define V4L2_BUF_FLAG_TSTAMP_SRC_MASK 0x00070000 #define V4L2_BUF_FLAG_TSTAMP_SRC_EOF 0x00000000 -- 2.18.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel