From patchwork Tue Oct 3 11:52:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 729129 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 731DEE75451 for ; Tue, 3 Oct 2023 11:52:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240616AbjJCLwz (ORCPT ); Tue, 3 Oct 2023 07:52:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50410 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240523AbjJCLwy (ORCPT ); Tue, 3 Oct 2023 07:52:54 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC094A6 for ; Tue, 3 Oct 2023 04:52:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1696333970; x=1727869970; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=IUm42fmekmMuZUlwhbf+2Nf/J7pOVxmL53D0Qvv7xWk=; b=OwyZM0FmDT6oJHTPPAFncFyxH+jqFEZyGeA98L/9XQCpPBkmzW+KrNEX ma6iPKuc8igqpbtWwQq8S2FvRrhokoHfZvERu8VkoivFSLLmG74Oos20a gzMUc398qi1Nfyy8Rn3wvD6Uoufd1Yu1OO1POBHLVAovtpmdXWL1vi88P +j8AgkkgidvIRIl45/PnoAuzZ2j1allMw2mbFPI14Fi4lBpq2NjjTtS/i 9HMMl8Fr2TlibXPnmVeqgTGw3zRjcWzOa0g6bVxvpbhdvnR4H2h/Xe9UH NTAwGHNjr3sOXfTdqN5Ia3ZwHsYLe8suU1pGcwBLWBEcx2Go7OR8j/+hd g==; X-IronPort-AV: E=McAfee;i="6600,9927,10851"; a="413767123" X-IronPort-AV: E=Sophos;i="6.03,197,1694761200"; d="scan'208";a="413767123" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Oct 2023 04:52:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10851"; a="816650513" X-IronPort-AV: E=Sophos;i="6.03,197,1694761200"; d="scan'208";a="816650513" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Oct 2023 04:52:47 -0700 Received: from svinhufvud.ger.corp.intel.com (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id 97BA5120A58; Tue, 3 Oct 2023 14:52:43 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Cc: Laurent Pinchart , tomi.valkeinen@ideasonboard.com, bingbu.cao@intel.com, hongju.wang@intel.com, hverkuil@xs4all.nl, Andrey Konovalov , Jacopo Mondi , Dmitry Perchanov , "Ng, Khai Wen" Subject: [PATCH v6 04/28] media: uapi: Add generic 8-bit metadata format definitions Date: Tue, 3 Oct 2023 14:52:32 +0300 Message-Id: <20231003115237.76828-5-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231003115237.76828-1-sakari.ailus@linux.intel.com> References: <20231003115237.76828-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Generic 8-bit metadata formats define the in-memory data layout but not the format of the data itself. The reasoning for having such formats is to allow CSI-2 receiver drivers to receive and DMA drivers to write the data to memory without knowing a large number of device specific formats. These formats may be used only in conjunction of a Media controller pipeline where the internal pad of the source sub-device defines the specific format of the data (using an mbus code). Signed-off-by: Sakari Ailus --- .../userspace-api/media/v4l/dev-subdev.rst | 2 + .../userspace-api/media/v4l/meta-formats.rst | 1 + .../media/v4l/metafmt-generic.rst | 304 ++++++++++++++++++ drivers/media/v4l2-core/v4l2-ioctl.c | 7 + include/uapi/linux/videodev2.h | 8 + 5 files changed, 322 insertions(+) create mode 100644 Documentation/userspace-api/media/v4l/metafmt-generic.rst diff --git a/Documentation/userspace-api/media/v4l/dev-subdev.rst b/Documentation/userspace-api/media/v4l/dev-subdev.rst index 43988516acdd..f375b820ab68 100644 --- a/Documentation/userspace-api/media/v4l/dev-subdev.rst +++ b/Documentation/userspace-api/media/v4l/dev-subdev.rst @@ -506,6 +506,8 @@ source pads. subdev-formats +.. _subdev-routing: + Streams, multiplexed media pads and internal routing ---------------------------------------------------- diff --git a/Documentation/userspace-api/media/v4l/meta-formats.rst b/Documentation/userspace-api/media/v4l/meta-formats.rst index 0bb61fc5bc00..919f595576b9 100644 --- a/Documentation/userspace-api/media/v4l/meta-formats.rst +++ b/Documentation/userspace-api/media/v4l/meta-formats.rst @@ -19,3 +19,4 @@ These formats are used for the :ref:`metadata` interface only. metafmt-vsp1-hgo metafmt-vsp1-hgt metafmt-vivid + metafmt-generic diff --git a/Documentation/userspace-api/media/v4l/metafmt-generic.rst b/Documentation/userspace-api/media/v4l/metafmt-generic.rst new file mode 100644 index 000000000000..2ebab1f895e0 --- /dev/null +++ b/Documentation/userspace-api/media/v4l/metafmt-generic.rst @@ -0,0 +1,304 @@ +.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later + +************************************************************************************************************************************************************************************************************************************************************************************************************************** +V4L2_META_FMT_GENERIC_8 ('MET8'), V4L2_META_FMT_GENERIC_CSI2_10 ('MC1A'), V4L2_META_FMT_GENERIC_CSI2_12 ('MC1C'), V4L2_META_FMT_GENERIC_CSI2_14 ('MC1E'), V4L2_META_FMT_GENERIC_CSI2_16 ('MC1G'), V4L2_META_FMT_GENERIC_CSI2_20 ('MC1K'), V4L2_META_FMT_GENERIC_CSI2_24 ('MC1O') +************************************************************************************************************************************************************************************************************************************************************************************************************************** + + +Generic line-based metadata formats + + +Description +=========== + +These generic line-based metadata formats define the memory layout of the data +without defining the format or meaning of the metadata itself. These formats may +only be used with a Media controller pipeline where the more specific format is +defined in an :ref:`internal source pad ` of the source +sub-device. See also :ref:`source routes `. + +.. _v4l2-meta-fmt-generic-8: + +V4L2_META_FMT_GENERIC_8 +----------------------- + +The V4L2_META_FMT_GENERIC_8 format is a plain 8-bit metadata format. + +This format is also used on CSI-2 for both 8 bits per ``Data unit +`` as well as for 16 bits per Data unit when two bytes +of metadata are packed into one 16-bit Data unit. + +**Byte Order Of V4L2_META_FMT_GENERIC_8.** +Each cell is one byte. "M" denotes a byte of metadata. + +.. tabularcolumns:: |p{2.4cm}|p{1.2cm}|p{1.2cm}|p{1.2cm}|p{1.2cm}| + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 12 8 8 8 8 + + * - start + 0: + - M\ :sub:`00` + - M\ :sub:`10` + - M\ :sub:`20` + - M\ :sub:`30` + * - start + 4: + - M\ :sub:`01` + - M\ :sub:`11` + - M\ :sub:`21` + - M\ :sub:`31` + +.. _v4l2-meta-fmt-generic-csi2-10: + +V4L2_META_FMT_GENERIC_CSI2_10 +----------------------------- + +V4L2_META_FMT_GENERIC_CSI2_10 contains packed 8-bit generic metadata, 10 bits +for each 8 bits of data. Every four bytes of metadata is followed by a single +byte of padding. The way the data is packed follows the MIPI CSI-2 specification +and the padding is defined in the MIPI CCS specification. + +This format is also used in conjunction with 20 bits per ``Data unit +`` formats that pack two bytes of metadata into one +Data unit. + +This format is little endian. + +**Byte Order Of V4L2_META_FMT_GENERIC_CSI2_10.** +Each cell is one byte. "M" denotes a byte of metadata and "X" a byte of padding. + +.. tabularcolumns:: |p{2.4cm}|p{1.2cm}|p{1.2cm}|p{1.2cm}|p{1.2cm}|p{.8cm}| + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 12 8 8 8 8 8 + + * - start + 0: + - M\ :sub:`00` + - M\ :sub:`10` + - M\ :sub:`20` + - M\ :sub:`30` + - X + * - start + 5: + - M\ :sub:`01` + - M\ :sub:`11` + - M\ :sub:`21` + - M\ :sub:`31` + - X + +.. _v4l2-meta-fmt-generic-csi2-12: + +V4L2_META_FMT_GENERIC_CSI2_12 +----------------------------- + +V4L2_META_FMT_GENERIC_CSI2_12 contains packed 8-bit generic metadata, 12 bits +for each 8 bits of data. Every four bytes of metadata is followed by a single +byte of padding. The way the data is packed follows the MIPI CSI-2 specification +and the padding is defined in the MIPI CCS specification. + +This format is also used in conjunction with 24 bits per ``Data unit +`` formats that pack two bytes of metadata into one +Data unit. + +This format is little endian. + +**Byte Order Of V4L2_META_FMT_GENERIC_CSI2_12.** +Each cell is one byte. "M" denotes a byte of metadata and "X" a byte of padding. + +.. tabularcolumns:: |p{2.4cm}|p{1.2cm}|p{1.2cm}|p{1.2cm}|p{1.2cm}|p{.8cm}|p{.8cm}| + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 12 8 8 8 8 8 8 + + * - start + 0: + - M\ :sub:`00` + - M\ :sub:`10` + - X + - M\ :sub:`20` + - M\ :sub:`30` + - X + * - start + 6: + - M\ :sub:`01` + - M\ :sub:`11` + - X + - M\ :sub:`21` + - M\ :sub:`31` + - X + +.. _v4l2-meta-fmt-generic-csi2-14: + +V4L2_META_FMT_GENERIC_CSI2_14 +----------------------------- + +V4L2_META_FMT_GENERIC_CSI2_14 contains packed 8-bit generic metadata, 14 bits +for each 8 bits of data. Every four bytes of metadata is followed by three bytes +of padding. The way the data is packed follows the MIPI CSI-2 specification and +the padding is defined in the MIPI CCS specification. + +This format is little endian. + +**Byte Order Of V4L2_META_FMT_GENERIC_CSI2_14.** +Each cell is one byte. "M" denotes a byte of metadata and "X" a byte of padding. + +.. tabularcolumns:: |p{2.4cm}|p{1.2cm}|p{1.2cm}|p{1.2cm}|p{1.2cm}|p{.8cm}|p{.8cm}|p{.8cm}| + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 12 8 8 8 8 8 8 8 + + * - start + 0: + - M\ :sub:`00` + - M\ :sub:`10` + - M\ :sub:`20` + - M\ :sub:`30` + - X + - X + - X + * - start + 7: + - M\ :sub:`01` + - M\ :sub:`11` + - M\ :sub:`21` + - M\ :sub:`31` + - X + - X + - X + +.. _v4l2-meta-fmt-generic-csi2-16: + +V4L2_META_FMT_GENERIC_CSI2_16 +----------------------------- + +V4L2_META_FMT_GENERIC_CSI2_16 contains packed 8-bit generic metadata, 16 bits +for each 8 bits of data. Every byte of metadata is followed by one byte of +padding. The way the data is packed follows the MIPI CSI-2 specification and the +padding is defined in the MIPI CCS specification. + +This format is little endian. + +**Byte Order Of V4L2_META_FMT_GENERIC_CSI2_16.** +Each cell is one byte. "M" denotes a byte of metadata and "X" a byte of padding. + +.. tabularcolumns:: |p{2.4cm}|p{1.2cm}|p{.8cm}|p{1.2cm}|p{.8cm}|p{1.2cm}|p{.8cm}|p{1.2cm}|p{.8cm}| + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 12 8 8 8 8 8 8 8 8 + + * - start + 0: + - M\ :sub:`00` + - X + - M\ :sub:`10` + - X + - M\ :sub:`20` + - X + - M\ :sub:`30` + - X + * - start + 8: + - M\ :sub:`01` + - X + - M\ :sub:`11` + - X + - M\ :sub:`21` + - X + - M\ :sub:`31` + - X + +.. _v4l2-meta-fmt-generic-csi2-20: + +V4L2_META_FMT_GENERIC_CSI2_20 +----------------------------- + +V4L2_META_FMT_GENERIC_CSI2_20 contains packed 8-bit generic metadata, 20 bits +for each 8 bits of data. Every byte of metadata is followed by alternating one +and two bytes of padding. The way the data is packed follows the MIPI CSI-2 +specification and the padding is defined in the MIPI CCS specification. + +This format is little endian. + +**Byte Order Of V4L2_META_FMT_GENERIC_CSI2_20.** +Each cell is one byte. "M" denotes a byte of metadata and "X" a byte of padding. + +.. tabularcolumns:: |p{2.4cm}|p{1.2cm}|p{.8cm}|p{1.2cm}|p{.8cm}|p{.8cm}|p{1.2cm}|p{.8cm}|p{1.2cm}|p{.8cm}|p{.8cm}| + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 12 8 8 8 8 8 8 8 8 8 8 + + * - start + 0: + - M\ :sub:`00` + - X + - M\ :sub:`10` + - X + - X + - M\ :sub:`20` + - X + - M\ :sub:`30` + - X + - X + * - start + 10: + - M\ :sub:`01` + - X + - M\ :sub:`11` + - X + - X + - M\ :sub:`21` + - X + - M\ :sub:`31` + - X + - X + +.. _v4l2-meta-fmt-generic-csi2-24: + +V4L2_META_FMT_GENERIC_CSI2_24 +----------------------------- + +V4L2_META_FMT_GENERIC_CSI2_24 contains packed 8-bit generic metadata, 24 bits +for each 8 bits of data. Every byte of metadata is followed by two bytes of +padding. The way the data is packed follows the MIPI CSI-2 specification and the +padding is defined in the MIPI CCS specification. + +This format is little endian. + +**Byte Order Of V4L2_META_FMT_GENERIC_CSI2_24.** +Each cell is one byte. "M" denotes a byte of metadata and "X" a byte of padding. + +.. tabularcolumns:: |p{2.4cm}|p{1.2cm}|p{.8cm}|p{.8cm}|p{1.2cm}|p{.8cm}|p{.8cm}|p{1.2cm}|p{.8cm}|p{.8cm}|p{1.2cm}|p{.8cm}|p{.8cm}| + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 12 8 8 8 8 8 8 8 8 8 8 8 8 + + * - start + 0: + - M\ :sub:`00` + - X + - X + - M\ :sub:`10` + - X + - X + - M\ :sub:`20` + - X + - X + - M\ :sub:`30` + - X + - X + * - start + 12: + - M\ :sub:`01` + - X + - X + - M\ :sub:`11` + - X + - X + - M\ :sub:`21` + - X + - X + - M\ :sub:`31` + - X + - X diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 9b1de54ce379..ce4b3929ff5f 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1452,6 +1452,13 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_PIX_FMT_Y210: descr = "10-bit YUYV Packed"; break; case V4L2_PIX_FMT_Y212: descr = "12-bit YUYV Packed"; break; case V4L2_PIX_FMT_Y216: descr = "16-bit YUYV Packed"; break; + case V4L2_META_FMT_GENERIC_8: descr = "8-bit Generic Metadata"; break; + case V4L2_META_FMT_GENERIC_CSI2_10: descr = "8b Generic Meta, 10b CSI-2"; break; + case V4L2_META_FMT_GENERIC_CSI2_12: descr = "8b Generic Meta, 12b CSI-2"; break; + case V4L2_META_FMT_GENERIC_CSI2_14: descr = "8b Generic Meta, 14b CSI-2"; break; + case V4L2_META_FMT_GENERIC_CSI2_16: descr = "8b Generic Meta, 16b CSI-2"; break; + case V4L2_META_FMT_GENERIC_CSI2_20: descr = "8b Generic Meta, 20b CSI-2"; break; + case V4L2_META_FMT_GENERIC_CSI2_24: descr = "8b Generic Meta, 24b CSI-2"; break; default: /* Compressed formats */ diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index c3d4e490ce7c..2b16b06ad278 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -839,6 +839,14 @@ struct v4l2_pix_format { #define V4L2_META_FMT_RK_ISP1_PARAMS v4l2_fourcc('R', 'K', '1', 'P') /* Rockchip ISP1 3A Parameters */ #define V4L2_META_FMT_RK_ISP1_STAT_3A v4l2_fourcc('R', 'K', '1', 'S') /* Rockchip ISP1 3A Statistics */ +#define V4L2_META_FMT_GENERIC_8 v4l2_fourcc('M', 'E', 'T', '8') /* Generic 8-bit metadata */ +#define V4L2_META_FMT_GENERIC_CSI2_10 v4l2_fourcc('M', 'C', '1', 'A') /* 10-bit CSI-2 packed 8-bit metadata */ +#define V4L2_META_FMT_GENERIC_CSI2_12 v4l2_fourcc('M', 'C', '1', 'C') /* 12-bit CSI-2 packed 8-bit metadata */ +#define V4L2_META_FMT_GENERIC_CSI2_14 v4l2_fourcc('M', 'C', '1', 'E') /* 14-bit CSI-2 packed 8-bit metadata */ +#define V4L2_META_FMT_GENERIC_CSI2_16 v4l2_fourcc('M', 'C', '1', 'G') /* 16-bit CSI-2 packed 8-bit metadata */ +#define V4L2_META_FMT_GENERIC_CSI2_20 v4l2_fourcc('M', 'C', '1', 'K') /* 20-bit CSI-2 packed 8-bit metadata */ +#define V4L2_META_FMT_GENERIC_CSI2_24 v4l2_fourcc('M', 'C', '1', 'O') /* 24-bit CSI-2 packed 8-bit metadata */ + /* priv field value to indicates that subsequent fields are valid. */ #define V4L2_PIX_FMT_PRIV_MAGIC 0xfeedcafe