From patchwork Fri May 24 14:00:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13673204 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (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 3A9AB86254 for ; Fri, 24 May 2024 14:00:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716559258; cv=none; b=BS2lTe2g/mAwOmbApfa1uDKG1IXSWU1AbBcAUfhOcfYRwr1cI4kwPxWAx1NZfqzNBovNylP6YoDLhljYjpPvqNX8Lizh9LoJ2lRGQa3dwajzrPiikl7JFYEAoeu1zccooVR/rxW6+q/M5bXDXSXiI3hL3K1TIdsam9YhGMD+LIA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716559258; c=relaxed/simple; bh=PO8+O3X8Ga8ORFPrQigvaz/Bf32eKQBhmpdKkmihLWc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=N06nVWF5EO3L2kNymXDgOc9dmmGobq3hMFGdC60XPsRXK1M2WJsmD0COvqoYp+rEEPyZK4Ss52gO6jYu5GrKiG+PD9sfObZt7SHH0MUNMQMIhrWTJgrL5ggo3v53KFLL+cMqZTDX7Q7zJNkHHyIBFMXq4UldnQB1kx1VMl4PUp0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=HpSgN2AV; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="HpSgN2AV" Received: from localhost.localdomain (93-61-96-190.ip145.fastwebnet.it [93.61.96.190]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 03AEB243D; Fri, 24 May 2024 16:00:34 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1716559235; bh=PO8+O3X8Ga8ORFPrQigvaz/Bf32eKQBhmpdKkmihLWc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HpSgN2AVW7qoZIjVCZSsIqxTroGkEQG3LPSWTKmdWcS4TCF3DBH1a0pOb/o+1MgHt cpi/x3o64l1EVpc/Vy7DRAJYKEbVqeWWdE2J8qNcSme+xZBM9MyuKYasbyD+7gUf30 wCLJkM1F7Yxwph5ub9toR5eXvarhd+PplytwpA/0= From: Jacopo Mondi To: Linux Media Mailing List Cc: Jacopo Mondi , David Plowman , Naushir Patuck , Nick Hollinghurst , Dave Stevenson , Tomi Valkeinen , Laurent Pinchart , Kieran Bingham , Sakari Ailus , Hans Verkuil , Mauro Carvalho Chehab Subject: [PATCH v7 4/8] media: uapi: Add meta pixel format for PiSP BE config Date: Fri, 24 May 2024 16:00:19 +0200 Message-ID: <20240524140024.161313-5-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240524140024.161313-1-jacopo.mondi@ideasonboard.com> References: <20240524140024.161313-1-jacopo.mondi@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add format description for the PiSP Back End configuration parameter buffer. Signed-off-by: Jacopo Mondi Reviewed-by: Naushir Patuck --- .../userspace-api/media/v4l/meta-formats.rst | 1 + .../media/v4l/metafmt-pisp-be.rst | 56 +++++++++++++++++++ drivers/media/v4l2-core/v4l2-ioctl.c | 1 + include/uapi/linux/videodev2.h | 3 + 4 files changed, 61 insertions(+) create mode 100644 Documentation/userspace-api/media/v4l/metafmt-pisp-be.rst diff --git a/Documentation/userspace-api/media/v4l/meta-formats.rst b/Documentation/userspace-api/media/v4l/meta-formats.rst index c23aac823d2c..c6e56b5888bc 100644 --- a/Documentation/userspace-api/media/v4l/meta-formats.rst +++ b/Documentation/userspace-api/media/v4l/meta-formats.rst @@ -15,6 +15,7 @@ These formats are used for the :ref:`metadata` interface only. metafmt-d4xx metafmt-generic metafmt-intel-ipu3 + metafmt-pisp-be metafmt-rkisp1 metafmt-uvc metafmt-vivid diff --git a/Documentation/userspace-api/media/v4l/metafmt-pisp-be.rst b/Documentation/userspace-api/media/v4l/metafmt-pisp-be.rst new file mode 100644 index 000000000000..3281fe366c86 --- /dev/null +++ b/Documentation/userspace-api/media/v4l/metafmt-pisp-be.rst @@ -0,0 +1,56 @@ +.. SPDX-License-Identifier: GPL-2.0 + +.. _v4l2-meta-fmt-rpi-be-cfg: + +************************ +V4L2_META_FMT_RPI_BE_CFG +************************ + +Raspberry Pi PiSP Back End configuration format +=============================================== + +The Raspberry Pi PiSP Back End memory-to-memory image signal processor is +configured by userspace by providing a buffer of configuration parameters +to the `pispbe-config` output video device node using the +:c:type:`v4l2_meta_format` interface. + +The PiSP Back End processes images in tiles, and its configuration requires +specifying two different sets of parameters by populating the members of +:c:type:`pisp_be_tiles_config` defined in the ``pisp_be_config.h`` header file. + +The `Raspberry Pi PiSP technical specification +`_ +provide detailed description of the ISP back end configuration and programming +model. + +Global configuration data +------------------------- + +The global configuration data describe how the pixels in a particular image are +to be processed and is therefore shared across all the tiles of the image. So +for example, LSC (Lens Shading Correction) or Denoise parameters would be common +across all tiles from the same frame. + +Global configuration data are passed to the ISP by populating the member of +:c:type:`pisp_be_config`. + +Tile parameters +--------------- + +As the ISP processes images in tiles, each set of tiles parameters describe how +a single tile in an image is going to be processed. A single set of tile +parameters consist of 160 bytes of data and to process a batch of tiles several +sets of tiles parameters are required. + +Tiles parameters are passed to the ISP by populating the member of +``pisp_tile`` and the ``num_tiles`` fields of :c:type:`pisp_be_tiles_config`. + +Raspberry Pi PiSP Back End uAPI data types +========================================== + +This section describes the data types exposed to userspace by the Raspberry Pi +PiSP Back End. The section is informative only, for a detailed description of +each field refer to the `Raspberry Pi PiSP technical specification +`_. + +.. kernel-doc:: include/uapi/linux/media/raspberrypi/pisp_be_config.h diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index ee97643ff3a7..7c684788997c 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1465,6 +1465,7 @@ 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_RPI_BE_CFG: descr = "RPi PiSP BE Config format"; break; case V4L2_META_FMT_GENERIC_8: descr = "8-bit Generic Metadata"; break; case V4L2_META_FMT_GENERIC_CSI2_10: descr = "8-bit Generic Meta, 10b CSI-2"; break; case V4L2_META_FMT_GENERIC_CSI2_12: descr = "8-bit Generic Meta, 12b CSI-2"; break; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index dd6876380fe3..96fc0456081e 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -843,6 +843,9 @@ 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 */ +/* Vendor specific - used for RaspberryPi PiSP */ +#define V4L2_META_FMT_RPI_BE_CFG v4l2_fourcc('R', 'P', 'B', 'C') /* PiSP BE configuration */ + #ifdef __KERNEL__ /* * Line-based metadata formats. Remember to update v4l_fill_fmtdesc() when