From patchwork Wed Sep 18 06:07:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Keke Li via B4 Relay X-Patchwork-Id: 13806587 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E9FED1662E4; Wed, 18 Sep 2024 06:07:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726639657; cv=none; b=O3ms/5o2+SgoyHq/JFub5NJBI6dR9xAHeljRTnv5mycIyQS1rYYjjaG28qy8qNVyOxsJeNxP3KyLQR52bNSUwYXTo+ze0HCATXekeOCd51fyxk9fs7Ef8/+C6NWeobqIHKdsb1BpA87GTE8kT8nqhFObfkbVkoLezZwuu9u59tE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726639657; c=relaxed/simple; bh=4+Kjm45EumF1BZkBC+vch/qxAQMK2SWvZ+EcU8j+cTA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=aWalo9dl1+XcKbFs0CXBKwQ0Ybp8AVLQA4Io0O0+2zS+rB/zlIBcgjRS6NwK1VP625XCbJjiQvWStULq27HTJV4Z9qIjEqXuJqzfNqWYsbvfggw1kHzvYcWSzQDsAT2SXO+5rBIkfgt9jkiWcZvTqGVHSnUZUY95dXzSP5Pgmn0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ccu5jhtP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ccu5jhtP" Received: by smtp.kernel.org (Postfix) with ESMTPS id A3C5EC4CEE2; Wed, 18 Sep 2024 06:07:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1726639656; bh=4+Kjm45EumF1BZkBC+vch/qxAQMK2SWvZ+EcU8j+cTA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=ccu5jhtP1wFFhLTJ2Jxp1o+q714FG0m0mRoJ68ybmQHTRIKDrRhFD/oXVBk+/sn3x uCKyk+LUDsUbWVwaOTbn35235JeH0pD4Mvl1qh4IbthZALkp5OCtt/Qb6250sj0A4v oxcnk0A4q5gsMlHAAZwZEsLiNFHKM7sILNcIJAxZ9gMDwgLbKGT9HylRKCns+ZJMOq MipM6h4acrvLce7X74OjBgF4xwdFkHVWsK0q/0Yc1hq5Wsd7d+dI1cZCyh4xHboyDO sNfMQ7b02ArPX7cMszuECn5zrXX26W4VngPT48r/LE6P51e8T+d1pfutwFvuPA2+6H 6pN6Iy1krN6EA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 986ABCAC589; Wed, 18 Sep 2024 06:07:36 +0000 (UTC) From: Keke Li via B4 Relay Date: Wed, 18 Sep 2024 14:07:19 +0800 Subject: [PATCH v3 8/9] Documentation: media: add documentation file metafmt-c3-isp.rst Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240918-c3isp-v3-8-f774a39e6774@amlogic.com> References: <20240918-c3isp-v3-0-f774a39e6774@amlogic.com> In-Reply-To: <20240918-c3isp-v3-0-f774a39e6774@amlogic.com> To: Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kieran.bingham@ideasonboard.com, laurent.pinchart@ideasonboard.com, dan.scally@ideasonboard.com, Keke Li X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1726639635; l=2506; i=keke.li@amlogic.com; s=20240902; h=from:subject:message-id; bh=rUBd8+yUBOxLjKjvST1rZmnj73w+JEufrqFVM56kfIk=; b=umhZtXyWm5l3d16imxC3hRyCvlhDSs+brlI2w+6I5pg2d79B0fSj2Kor1GABxoWgSCO6axCwJ TNdX7IB2i1hCjo8HjSm3D9L0mZngrJQUAI95+jptQ3Dua/Jpu8xNMn1 X-Developer-Key: i=keke.li@amlogic.com; a=ed25519; pk=XxNPTsQ0YqMJLLekV456eoKV5gbSlxnViB1k1DhfRmU= X-Endpoint-Received: by B4 Relay for keke.li@amlogic.com/20240902 with auth_id=204 X-Original-From: Keke Li Reply-To: keke.li@amlogic.com From: Keke Li Add the file 'metafmt-c3-isp.rst' that documents the meta format of c3-isp. Signed-off-by: Keke Li --- .../userspace-api/media/v4l/meta-formats.rst | 1 + .../userspace-api/media/v4l/metafmt-c3-isp.rst | 39 ++++++++++++++++++++++ 2 files changed, 40 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/meta-formats.rst b/Documentation/userspace-api/media/v4l/meta-formats.rst index c6e56b5888bc..3a420747f6e7 100644 --- a/Documentation/userspace-api/media/v4l/meta-formats.rst +++ b/Documentation/userspace-api/media/v4l/meta-formats.rst @@ -12,6 +12,7 @@ These formats are used for the :ref:`metadata` interface only. .. toctree:: :maxdepth: 1 + metafmt-c3-isp metafmt-d4xx metafmt-generic metafmt-intel-ipu3 diff --git a/Documentation/userspace-api/media/v4l/metafmt-c3-isp.rst b/Documentation/userspace-api/media/v4l/metafmt-c3-isp.rst new file mode 100644 index 000000000000..bbaf3542c1ca --- /dev/null +++ b/Documentation/userspace-api/media/v4l/metafmt-c3-isp.rst @@ -0,0 +1,39 @@ +.. SPDX-License-Identifier: (GPL-2.0-only OR MIT) + +.. _v4l2-meta-fmt-c3isp-stats: +.. _v4l2-meta-fmt-c3isp-params: + +*********************************************************************** +V4L2_META_FMT_C3ISP_STATS ('CSTS'), V4L2_META_FMT_C3ISP_PARAMS ('CPRM') +*********************************************************************** + +.. c3_isp_stats_info + +3A statistics +============= + +The C3 ISP can collect different statistics over an input Bayer frame. +Those statistics are obtained from the "isp-stats" metadata capture video nodes, +using the :c:type:`v4l2_meta_format` interface. +They are formatted as described by the :c:type:`c3_isp_stats_info` structure. + +The statistics collected are Auto-white balance, +Auto-exposure and Auto-focus information. + +.. c3_isp_params_buffer + +Pipeline parameters +=================== + +The pipeline parameters are passed to the "isp-params" metadata +output video nodes, using the :c:type:`v4l2_meta_format` interface. They are +formatted as described by the :c:type:`c3_isp_params_buffer` structure. + +The structure c3_isp_params_buffer includes the necessary parameters +required by the ISP. +These parameters are written to the ISP hardware. + +Amlogic C3 ISP uAPI data types +=============================== + +.. kernel-doc:: drivers/media/platform/amlogic/c3-isp/include/uapi/c3-isp-config.h