From patchwork Fri May 31 08:07:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13681293 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 A9D6C76408 for ; Fri, 31 May 2024 08:07:33 +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=1717142855; cv=none; b=TPQvja9dJw8/EdFZFCgl50lFzICajjVIjMoKMCZDT9l/YJxrd2kksKXPaVVFDfRlhOrxhYwyVu5lCBkk/KfR80Zt9uqTXFT3Vz1CNK8yvvCTnBWODN+y4/c5FG23Joj8XFUYf6OxOfxOUZ/Tq9tebNqRshy97gcsyaaIpsRplsc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717142855; c=relaxed/simple; bh=2dgXvafGvTEPd95LArAWLb+y763AZEuKr1hUv/2T0sg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Nv/YI7fSR6340Uuvbwvd/ukhdtpHAXoZVhD7YbuV2AsDLJBAnHIcF2FoQYyEqU6HKnNEoK+MyPwcrZ7QXhk6lE9U6kTN03RCB9GGBGy54zBesd6wsdbJ4FJhP0W3fHwUDGGgnQZkRsHw6Ij06FAjIT067yTaIaWTISOoP8OhlGE= 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=f7WYmeQO; 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="f7WYmeQO" Received: from localhost.localdomain (93-61-96-190.ip145.fastwebnet.it [93.61.96.190]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 5E917B53; Fri, 31 May 2024 10:07:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1717142847; bh=2dgXvafGvTEPd95LArAWLb+y763AZEuKr1hUv/2T0sg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=f7WYmeQOMak8BKhfErcnDFnCZXmAcllTK7dAHjoHYzqyLb5UsUDqO35K5HGryA/8u lqXGYmbXVwjdlkjz547s60NcyEvOa6ekcVAGcosAWPzAn++oKdiCMkuM5Z32RwFYAg RNGtTJ7ayYxOQRhxkC33f3tMMdnVp3fo27Wz2Vkc= 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 v9 1/8] media: uapi: pixfmt-luma: Document MIPI CSI-2 packing Date: Fri, 31 May 2024 10:07:00 +0200 Message-ID: <20240531080707.34568-2-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531080707.34568-1-jacopo.mondi@ideasonboard.com> References: <20240531080707.34568-1-jacopo.mondi@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The Y10P, Y12P and Y14P format variants are packed according to the RAW10, RAW12 and RAW14 formats as defined by the MIPI CSI-2 specification. Document it. Signed-off-by: Jacopo Mondi Reviewed-by: Laurent Pinchart Reviewed-by: Naushir Patuck --- Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst index b3c5779521d8..f02e6cf3516a 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst @@ -209,3 +209,7 @@ are often referred to as greyscale formats. For Y012 and Y12 formats, Y012 places its data in the 12 high bits, with padding zeros in the 4 low bits, in contrast to the Y12 format, which has its padding located in the most significant bits of the 16 bit word. + + The 'P' variations of the Y10, Y12 and Y14 formats are packed according to + the RAW10, RAW12 and RAW14 packing scheme as defined by the MIPI CSI-2 + specification. From patchwork Fri May 31 08:07:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13681295 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 9DAD6745F4 for ; Fri, 31 May 2024 08:07:36 +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=1717142858; cv=none; b=lrIVDSYB7Xzd5Fnv1I3P5ZG6gbFT/Q3ylsYNWCa0IjoTJjhjlljrXdG/fpQE0UF/0IEBJoXbeDL1jCT7T+b7l9hAltrLD+cdu1poUN5yAPA6vSbT7tWpoz2vaIWSqOTsNjcj1UWgzMupF7E1IhXrt5TToLM0KmAvLiQzxjZdtb0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717142858; c=relaxed/simple; bh=Q568/Atxc3uRCYuNB30ghLL5okL8avGsDzwxsP3zbdo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WlR9GhVhtC3bw57Jlm9PaeAcQ/qveTMbFqxkov2EK7L6lTKIMqbdUK5wtekMmmRwVNMDYDLHEVhBcgT2dC68kd2dbIOiSQtrbyattjZzPxGeNBppa8GuN9UihFOgYYjsx0GhqaUhLLGN8N+qJzHbJiRPN6+3qWbtozDvOjbVib8= 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=YRk+5qL4; 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="YRk+5qL4" Received: from localhost.localdomain (93-61-96-190.ip145.fastwebnet.it [93.61.96.190]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 386AEE22; Fri, 31 May 2024 10:07:27 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1717142847; bh=Q568/Atxc3uRCYuNB30ghLL5okL8avGsDzwxsP3zbdo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YRk+5qL4GPblojlGd+qYEmFmSOFPWw2oc1UM8o1vJcMyxOLg9t5UvvXCsntkNKgr+ +cnVtKdjnwFgwLvk0pYzv7UnnGa0CZ0LPngYl9zHrPGi2VaB0vqHpVRlOEjxB9MWuC JE30+CIIA5gjM6ardaEyFL61id79plG2Kckftcb0= 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 v9 2/8] media: uapi: Add a pixel format for BGR48 and RGB48 Date: Fri, 31 May 2024 10:07:01 +0200 Message-ID: <20240531080707.34568-3-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531080707.34568-1-jacopo.mondi@ideasonboard.com> References: <20240531080707.34568-1-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 BGR48 and RGB48 16-bit per component image formats. Signed-off-by: Jacopo Mondi Reviewed-by: Kieran Bingham Reviewed-by: Naushir Patuck --- .../userspace-api/media/v4l/pixfmt-rgb.rst | 54 +++++++++++++++++++ drivers/media/v4l2-core/v4l2-common.c | 2 + drivers/media/v4l2-core/v4l2-ioctl.c | 2 + include/uapi/linux/videodev2.h | 2 + 4 files changed, 60 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst b/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst index b71b80d634d6..5ed4d62df909 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst @@ -996,6 +996,60 @@ arranged in little endian order. \normalsize +16 Bits Per Component +===================== + +These formats store an RGB triplet in six bytes, with 16 bits per component +stored in memory in little endian byte order. They are named based on the order +of the RGB components as stored in memory. For instance, RGB48 stores R\ +:sub:`7:0` and R\ :sub:`15:8` in bytes 0 and 1 respectively. This differs from +the DRM format nomenclature that instead uses the order of components as seen in +the 48-bits little endian word. + +.. raw:: latex + + \small + +.. flat-table:: RGB Formats With 16 Bits Per Component + :header-rows: 1 + + * - Identifier + - Code + - Byte 0 + - Byte 1 + - Byte 2 + - Byte 3 + - Byte 4 + - Byte 5 + + * .. _V4L2-PIX-FMT-BGR48: + + - ``V4L2_PIX_FMT_BGR48`` + - 'BGR6' + + - B\ :sub:`7-0` + - B\ :sub:`15-8` + - G\ :sub:`7-0` + - G\ :sub:`15-8` + - R\ :sub:`7-0` + - R\ :sub:`15-8` + + * .. _V4L2-PIX-FMT-RGB48: + + - ``V4L2_PIX_FMT_RGB48`` + - 'RGB6' + + - R\ :sub:`7-0` + - R\ :sub:`15-8` + - G\ :sub:`7-0` + - G\ :sub:`15-8` + - B\ :sub:`7-0` + - B\ :sub:`15-8` + +.. raw:: latex + + \normalsize + Deprecated RGB Formats ====================== diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c index 4165c815faef..0a2f4f0d0a07 100644 --- a/drivers/media/v4l2-core/v4l2-common.c +++ b/drivers/media/v4l2-core/v4l2-common.c @@ -253,6 +253,8 @@ const struct v4l2_format_info *v4l2_format_info(u32 format) { .format = V4L2_PIX_FMT_RGB555, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 }, { .format = V4L2_PIX_FMT_BGR666, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 }, { .format = V4L2_PIX_FMT_BGR48_12, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 6, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 }, + { .format = V4L2_PIX_FMT_BGR48, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 6, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 }, + { .format = V4L2_PIX_FMT_RGB48, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 6, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 }, { .format = V4L2_PIX_FMT_ABGR64_12, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 8, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 }, { .format = V4L2_PIX_FMT_RGBA1010102, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 }, { .format = V4L2_PIX_FMT_RGBX1010102, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 }, diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 4c76d17b4629..ee97643ff3a7 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1307,6 +1307,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_PIX_FMT_RGBX1010102: descr = "32-bit RGBX 10-10-10-2"; break; case V4L2_PIX_FMT_RGBA1010102: descr = "32-bit RGBA 10-10-10-2"; break; case V4L2_PIX_FMT_ARGB2101010: descr = "32-bit ARGB 2-10-10-10"; break; + case V4L2_PIX_FMT_BGR48: descr = "48-bit BGR 16-16-16"; break; + case V4L2_PIX_FMT_RGB48: descr = "48-bit RGB 16-16-16"; break; case V4L2_PIX_FMT_BGR48_12: descr = "12-bit Depth BGR"; break; case V4L2_PIX_FMT_ABGR64_12: descr = "12-bit Depth BGRA"; break; case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index fe6b67e83751..dd6876380fe3 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -582,6 +582,8 @@ struct v4l2_pix_format { /* RGB formats (6 or 8 bytes per pixel) */ #define V4L2_PIX_FMT_BGR48_12 v4l2_fourcc('B', '3', '1', '2') /* 48 BGR 12-bit per component */ +#define V4L2_PIX_FMT_BGR48 v4l2_fourcc('B', 'G', 'R', '6') /* 48 BGR 16-bit per component */ +#define V4L2_PIX_FMT_RGB48 v4l2_fourcc('R', 'G', 'B', '6') /* 48 RGB 16-bit per component */ #define V4L2_PIX_FMT_ABGR64_12 v4l2_fourcc('B', '4', '1', '2') /* 64 BGRA 12-bit per component */ /* Grey formats */ From patchwork Fri May 31 08:07:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13681296 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 C9FD6770FE for ; Fri, 31 May 2024 08:07:36 +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=1717142859; cv=none; b=WKOOLCmYfLYPf0MbvUKvz35vnr2NlIr0dN2OS3Gy8bPmd8hxl8IMIuSi/KpVIP4FL9B22kQvm6IoHZwApQZZJ3ROZ+GnwtjPKGBH/3rCxoZoV2gbs8frGHg+sf53E7ULATeBjk9AX4KMufbtCsg3CVkRzwWuZ3fV2o5IujhaRvQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717142859; c=relaxed/simple; bh=dp/9SfebZIbmaTlvqRws6GvSKedg5SQbzbiL1+mtfI8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; 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a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1717142848; bh=dp/9SfebZIbmaTlvqRws6GvSKedg5SQbzbiL1+mtfI8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GoJFKXcA5lP1+aPwpFHD2dy9mG0DRcr1PC0VttmXuiUI/tsTtC+H3Q12Qk7LwMR1H jK8Fg2gsAwv9azka7/Iqad325No1dxCy5jDwXwcvpMcnNZgomQu0tZjHzDagIli0lg Mk9rwSNxFERFwD13/PIYzCMB/zJA+TxT/Xl0TeUI= 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 v9 3/8] media: uapi: Add Raspberry Pi PiSP Back End uAPI Date: Fri, 31 May 2024 10:07:02 +0200 Message-ID: <20240531080707.34568-4-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531080707.34568-1-jacopo.mondi@ideasonboard.com> References: <20240531080707.34568-1-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 the Raspberry Pi PiSP Back End uAPI header. The header defines the data type used to configure the PiSP Back End ISP. The detailed description of the types and of the ISP configuration procedure is available at https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf Signed-off-by: Jacopo Mondi --- MAINTAINERS | 7 + .../linux/media/raspberrypi/pisp_be_config.h | 927 ++++++++++++++++++ .../linux/media/raspberrypi/pisp_common.h | 199 ++++ 3 files changed, 1133 insertions(+) create mode 100644 include/uapi/linux/media/raspberrypi/pisp_be_config.h create mode 100644 include/uapi/linux/media/raspberrypi/pisp_common.h diff --git a/MAINTAINERS b/MAINTAINERS index d6c90161c7bf..97f2bb162730 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18772,6 +18772,13 @@ L: linux-edac@vger.kernel.org S: Maintained F: drivers/ras/amd/fmpm.c +RASPBERRY PI PISP BACK END +M: Jacopo Mondi +L: Raspberry Pi Kernel Maintenance +L: linux-media@vger.kernel.org +S: Maintained +F: include/uapi/linux/media/raspberrypi/ + RC-CORE / LIRC FRAMEWORK M: Sean Young L: linux-media@vger.kernel.org diff --git a/include/uapi/linux/media/raspberrypi/pisp_be_config.h b/include/uapi/linux/media/raspberrypi/pisp_be_config.h new file mode 100644 index 000000000000..3eb4be03c5f4 --- /dev/null +++ b/include/uapi/linux/media/raspberrypi/pisp_be_config.h @@ -0,0 +1,927 @@ +/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */ +/* + * PiSP Back End configuration definitions. + * + * Copyright (C) 2021 - Raspberry Pi Ltd + * + */ +#ifndef _UAPI_PISP_BE_CONFIG_H_ +#define _UAPI_PISP_BE_CONFIG_H_ + +#include + +#include "pisp_common.h" + +/* byte alignment for inputs */ +#define PISP_BACK_END_INPUT_ALIGN 4u +/* alignment for compressed inputs */ +#define PISP_BACK_END_COMPRESSED_ALIGN 8u +/* minimum required byte alignment for outputs */ +#define PISP_BACK_END_OUTPUT_MIN_ALIGN 16u +/* preferred byte alignment for outputs */ +#define PISP_BACK_END_OUTPUT_MAX_ALIGN 64u + +/* minimum allowed tile width anywhere in the pipeline */ +#define PISP_BACK_END_MIN_TILE_WIDTH 16u +/* minimum allowed tile width anywhere in the pipeline */ +#define PISP_BACK_END_MIN_TILE_HEIGHT 16u + +#define PISP_BACK_END_NUM_OUTPUTS 2 +#define PISP_BACK_END_HOG_OUTPUT 1 + +#define PISP_BACK_END_NUM_TILES 64 + +enum pisp_be_bayer_enable { + PISP_BE_BAYER_ENABLE_INPUT = 0x000001, + PISP_BE_BAYER_ENABLE_DECOMPRESS = 0x000002, + PISP_BE_BAYER_ENABLE_DPC = 0x000004, + PISP_BE_BAYER_ENABLE_GEQ = 0x000008, + PISP_BE_BAYER_ENABLE_TDN_INPUT = 0x000010, + PISP_BE_BAYER_ENABLE_TDN_DECOMPRESS = 0x000020, + PISP_BE_BAYER_ENABLE_TDN = 0x000040, + PISP_BE_BAYER_ENABLE_TDN_COMPRESS = 0x000080, + PISP_BE_BAYER_ENABLE_TDN_OUTPUT = 0x000100, + PISP_BE_BAYER_ENABLE_SDN = 0x000200, + PISP_BE_BAYER_ENABLE_BLC = 0x000400, + PISP_BE_BAYER_ENABLE_STITCH_INPUT = 0x000800, + PISP_BE_BAYER_ENABLE_STITCH_DECOMPRESS = 0x001000, + PISP_BE_BAYER_ENABLE_STITCH = 0x002000, + PISP_BE_BAYER_ENABLE_STITCH_COMPRESS = 0x004000, + PISP_BE_BAYER_ENABLE_STITCH_OUTPUT = 0x008000, + PISP_BE_BAYER_ENABLE_WBG = 0x010000, + PISP_BE_BAYER_ENABLE_CDN = 0x020000, + PISP_BE_BAYER_ENABLE_LSC = 0x040000, + PISP_BE_BAYER_ENABLE_TONEMAP = 0x080000, + PISP_BE_BAYER_ENABLE_CAC = 0x100000, + PISP_BE_BAYER_ENABLE_DEBIN = 0x200000, + PISP_BE_BAYER_ENABLE_DEMOSAIC = 0x400000, +}; + +enum pisp_be_rgb_enable { + PISP_BE_RGB_ENABLE_INPUT = 0x000001, + PISP_BE_RGB_ENABLE_CCM = 0x000002, + PISP_BE_RGB_ENABLE_SAT_CONTROL = 0x000004, + PISP_BE_RGB_ENABLE_YCBCR = 0x000008, + PISP_BE_RGB_ENABLE_FALSE_COLOUR = 0x000010, + PISP_BE_RGB_ENABLE_SHARPEN = 0x000020, + /* Preferred colours would occupy 0x000040 */ + PISP_BE_RGB_ENABLE_YCBCR_INVERSE = 0x000080, + PISP_BE_RGB_ENABLE_GAMMA = 0x000100, + PISP_BE_RGB_ENABLE_CSC0 = 0x000200, + PISP_BE_RGB_ENABLE_CSC1 = 0x000400, + PISP_BE_RGB_ENABLE_DOWNSCALE0 = 0x001000, + PISP_BE_RGB_ENABLE_DOWNSCALE1 = 0x002000, + PISP_BE_RGB_ENABLE_RESAMPLE0 = 0x008000, + PISP_BE_RGB_ENABLE_RESAMPLE1 = 0x010000, + PISP_BE_RGB_ENABLE_OUTPUT0 = 0x040000, + PISP_BE_RGB_ENABLE_OUTPUT1 = 0x080000, + PISP_BE_RGB_ENABLE_HOG = 0x200000 +}; + +#define PISP_BE_RGB_ENABLE_CSC(i) (PISP_BE_RGB_ENABLE_CSC0 << (i)) +#define PISP_BE_RGB_ENABLE_DOWNSCALE(i) (PISP_BE_RGB_ENABLE_DOWNSCALE0 << (i)) +#define PISP_BE_RGB_ENABLE_RESAMPLE(i) (PISP_BE_RGB_ENABLE_RESAMPLE0 << (i)) +#define PISP_BE_RGB_ENABLE_OUTPUT(i) (PISP_BE_RGB_ENABLE_OUTPUT0 << (i)) + +/* + * We use the enable flags to show when blocks are "dirty", but we need some + * extra ones too. + */ +enum pisp_be_dirty { + PISP_BE_DIRTY_GLOBAL = 0x0001, + PISP_BE_DIRTY_SH_FC_COMBINE = 0x0002, + PISP_BE_DIRTY_CROP = 0x0004 +}; + +/** + * struct pisp_be_global_config - PiSP global enable bitmaps + * @bayer_enables: Bayer input enable flags + * @rgb_enables: RGB output enable flags + * @bayer_order: Bayer input format ordering + * @pad: Padding bytes + */ +struct pisp_be_global_config { + __u32 bayer_enables; + __u32 rgb_enables; + __u8 bayer_order; + __u8 pad[3]; +} __attribute__((packed)); + +/** + * struct pisp_be_input_buffer_config - PiSP Back End input buffer + * @addr: Input buffer address + */ +struct pisp_be_input_buffer_config { + /* low 32 bits followed by high 32 bits (for each of up to 3 planes) */ + __u32 addr[3][2]; +} __attribute__((packed)); + +/** + * struct pisp_be_dpc_config - PiSP Back End DPC config + * + * Defective Pixel Correction configuration + * + * @coeff_level: Coefficient for the darkest neighbouring pixel value + * @coeff_range: Coefficient for the range of pixels for this Bayer channel + * @pad: Padding byte + * @flags: DPC configuration flags + */ +struct pisp_be_dpc_config { + __u8 coeff_level; + __u8 coeff_range; + __u8 pad; +#define PISP_BE_DPC_FLAG_FOLDBACK 1 + __u8 flags; +} __attribute__((packed)); + +/** + * struct pisp_be_geq_config - PiSP Back End GEQ config + * + * Green Equalisation configuration + * + * @offset: Offset value for threshold calculation + * @slope_sharper: Slope/Sharper configuration + * @min: Minimum value the threshold may have + * @max: Maximum value the threshold may have + */ +struct pisp_be_geq_config { + __u16 offset; +#define PISP_BE_GEQ_SHARPER BIT(15) +#define PISP_BE_GEQ_SLOPE ((1 << 10) - 1) + /* top bit is the "sharper" flag, slope value is bottom 10 bits */ + __u16 slope_sharper; + __u16 min; + __u16 max; +} __attribute__((packed)); + +/** + * struct pisp_be_tdn_input_buffer_config - PiSP Back End TDN input buffer + * @addr: TDN input buffer address + */ +struct pisp_be_tdn_input_buffer_config { + /* low 32 bits followed by high 32 bits */ + __u32 addr[2]; +} __attribute__((packed)); + +/** + * struct pisp_be_tdn_config - PiSP Back End TDN config + * + * Temporal Denoise configuration + * + * @black_level: Black level value subtracted from pixels + * @ratio: Multiplier for the LTA input frame + * @noise_constant: Constant offset value used in noise estimation + * @noise_slope: Noise estimation multiplier + * @threshold: Threshold for TDN operations + * @reset: Disable TDN operations + * @pad: Padding byte + */ +struct pisp_be_tdn_config { + __u16 black_level; + __u16 ratio; + __u16 noise_constant; + __u16 noise_slope; + __u16 threshold; + __u8 reset; + __u8 pad; +} __attribute__((packed)); + +/** + * struct pisp_be_tdn_output_buffer_config - PiSP Back End TDN output buffer + * @addr: TDN output buffer address + */ +struct pisp_be_tdn_output_buffer_config { + /* low 32 bits followed by high 32 bits */ + __u32 addr[2]; +} __attribute__((packed)); + +/** + * struct pisp_be_sdn_config - PiSP Back End SDN config + * + * Spatial Denoise configuration + * + * @black_level: Black level subtracted from pixel for noise estimation + * @leakage: Proportion of the original undenoised value to mix in + * denoised output + * @pad: Padding byte + * @noise_constant: Noise constant used for noise estimation + * @noise_slope: Noise slope value used for noise estimation + * @noise_constant2: Second noise constant used for noise estimation + * @noise_slope2: Second slope value used for noise estimation + */ +struct pisp_be_sdn_config { + __u16 black_level; + __u8 leakage; + __u8 pad; + __u16 noise_constant; + __u16 noise_slope; + __u16 noise_constant2; + __u16 noise_slope2; +} __attribute__((packed)); + +/** + * struct pisp_be_stitch_input_buffer_config - PiSP Back End Stitch input + * @addr: Stitch input buffer address + */ +struct pisp_be_stitch_input_buffer_config { + /* low 32 bits followed by high 32 bits */ + __u32 addr[2]; +} __attribute__((packed)); + +#define PISP_BE_STITCH_STREAMING_LONG 0x8000 +#define PISP_BE_STITCH_EXPOSURE_RATIO_MASK 0x7fff + +/** + * struct pisp_be_stitch_config - PiSP Back End Stitch config + * + * Stitch block configuration + * + * @threshold_lo: Low threshold value + * @threshold_diff_power: Low and high threshold difference + * @pad: Padding bytes + * @exposure_ratio: Multiplier to convert long exposure pixels into + * short exposure pixels + * @motion_threshold_256: Motion threshold above which short exposure + * pixels are used + * @motion_threshold_recip: Reciprocal of motion_threshold_256 value + */ +struct pisp_be_stitch_config { + __u16 threshold_lo; + __u8 threshold_diff_power; + __u8 pad; + + /* top bit indicates whether streaming input is the long exposure */ + __u16 exposure_ratio; + + __u8 motion_threshold_256; + __u8 motion_threshold_recip; +} __attribute__((packed)); + +/** + * struct pisp_be_stitch_output_buffer_config - PiSP Back End Stitch output + * @addr: Stitch input buffer address + */ +struct pisp_be_stitch_output_buffer_config { + /* low 32 bits followed by high 32 bits */ + __u32 addr[2]; +} __attribute__((packed)); + +/** + * struct pisp_be_cdn_config - PiSP Back End CDN config + * + * Colour Denoise configuration + * + * @thresh: Constant for noise estimation + * @iir_strength: Relative strength of the IIR part of the filter + * @g_adjust: Proportion of the change assigned to the G channel + */ +struct pisp_be_cdn_config { + __u16 thresh; + __u8 iir_strength; + __u8 g_adjust; +} __attribute__((packed)); + +#define PISP_BE_LSC_LOG_GRID_SIZE 5 +#define PISP_BE_LSC_GRID_SIZE (1 << PISP_BE_LSC_LOG_GRID_SIZE) +#define PISP_BE_LSC_STEP_PRECISION 18 + +/** + * struct pisp_be_lsc_config - PiSP Back End LSC config + * + * Lens Shading Correction configuration + * + * @grid_step_x: Reciprocal of cell size width + * @grid_step_y: Reciprocal of cell size height + * @lut_packed: Jointly-coded RGB gains for each LSC grid + */ +struct pisp_be_lsc_config { + /* (1<<18) / grid_cell_width */ + __u16 grid_step_x; + /* (1<<18) / grid_cell_height */ + __u16 grid_step_y; + /* RGB gains jointly encoded in 32 bits */ +#define PISP_BE_LSC_LUT_SIZE (PISP_BE_LSC_GRID_SIZE + 1) + __u32 lut_packed[PISP_BE_LSC_LUT_SIZE][PISP_BE_LSC_LUT_SIZE]; +} __attribute__((packed)); + +/** + * struct pisp_be_lsc_extra - PiSP Back End LSC Extra config + * @offset_x: Horizontal offset into the LSC table of this tile + * @offset_y: Vertical offset into the LSC table of this tile + */ +struct pisp_be_lsc_extra { + __u16 offset_x; + __u16 offset_y; +} __attribute__((packed)); + +#define PISP_BE_CAC_LOG_GRID_SIZE 3 +#define PISP_BE_CAC_GRID_SIZE (1 << PISP_BE_CAC_LOG_GRID_SIZE) +#define PISP_BE_CAC_STEP_PRECISION 20 + +/** + * struct pisp_be_cac_config - PiSP Back End CAC config + * + * Chromatic Aberration Correction config + * + * @grid_step_x: Reciprocal of cell size width + * @grid_step_y: Reciprocal of cell size height + * @lut: Pixel shift for the CAC grid + */ +struct pisp_be_cac_config { + /* (1<<20) / grid_cell_width */ + __u16 grid_step_x; + /* (1<<20) / grid_cell_height */ + __u16 grid_step_y; + /* [gridy][gridx][rb][xy] */ +#define PISP_BE_CAC_LUT_SIZE (PISP_BE_CAC_GRID_SIZE + 1) + __s8 lut[PISP_BE_CAC_LUT_SIZE][PISP_BE_CAC_LUT_SIZE][2][2]; +} __attribute__((packed)); + +/** + * struct pisp_be_cac_extra - PiSP Back End CAC extra config + * @offset_x: Horizontal offset into the CAC table of this tile + * @offset_y: Horizontal offset into the CAC table of this tile + */ +struct pisp_be_cac_extra { + __u16 offset_x; + __u16 offset_y; +} __attribute__((packed)); + +#define PISP_BE_DEBIN_NUM_COEFFS 4 + +/** + * struct pisp_be_debin_config - PiSP Back End Debin config + * + * Debinning configuration + * + * @coeffs: Filter coefficients for debinning + * @h_enable: Horizontal debinning enable + * @v_enable: Vertical debinning enable + * @pad: Padding bytes + */ +struct pisp_be_debin_config { + __s8 coeffs[PISP_BE_DEBIN_NUM_COEFFS]; + __s8 h_enable; + __s8 v_enable; + __s8 pad[2]; +} __attribute__((packed)); + +#define PISP_BE_TONEMAP_LUT_SIZE 64 + +/** + * struct pisp_be_tonemap_config - PiSP Back End Tonemap config + * + * Tonemapping configuration + * + * @detail_constant: Constant value for threshold calculation + * @detail_slope: Slope value for threshold calculation + * @iir_strength: Relative strength of the IIR fiter + * @strength: Strength factor + * @lut: Look-up table for tonemap curve + */ +struct pisp_be_tonemap_config { + __u16 detail_constant; + __u16 detail_slope; + __u16 iir_strength; + __u16 strength; + __u32 lut[PISP_BE_TONEMAP_LUT_SIZE]; +} __attribute__((packed)); + +/** + * struct pisp_be_demosaic_config - PiSP Back End Demosaic config + * + * Demosaic configuration + * + * @sharper: Use other Bayer channels to increase sharpness + * @fc_mode: Built-in false colour suppression mode + * @pad: Padding bytes + */ +struct pisp_be_demosaic_config { + __u8 sharper; + __u8 fc_mode; + __u8 pad[2]; +} __attribute__((packed)); + +/** + * struct pisp_be_ccm_config - PiSP Back End CCM config + * + * Colour Correction Matrix configuration + * + * @coeffs: Matrix coefficients + * @pad: Padding bytes + * @offsets: Offsets triplet + */ +struct pisp_be_ccm_config { + __s16 coeffs[9]; + __u8 pad[2]; + __s32 offsets[3]; +} __attribute__((packed)); + +/** + * struct pisp_be_sat_control_config - PiSP Back End SAT config + * + * Saturation Control configuration + * + * @shift_r: Left shift for Red colour channel + * @shift_g: Left shift for Green colour channel + * @shift_b: Left shift for Blue colour channel + * @pad: Padding byte + */ +struct pisp_be_sat_control_config { + __u8 shift_r; + __u8 shift_g; + __u8 shift_b; + __u8 pad; +} __attribute__((packed)); + +/** + * struct pisp_be_false_colour_config - PiSP Back End False Colour config + * + * False Colour configuration + * + * @distance: Distance of neighbouring pixels, either 1 or 2 + * @pad: Padding bytes + */ +struct pisp_be_false_colour_config { + __u8 distance; + __u8 pad[3]; +} __attribute__((packed)); + +#define PISP_BE_SHARPEN_SIZE 5 +#define PISP_BE_SHARPEN_FUNC_NUM_POINTS 9 + +/** + * struct pisp_be_sharpen_config - PiSP Back End Sharpening config + * + * Sharpening configuration + * + * @kernel0: Coefficient for filter 0 + * @pad0: Padding byte + * @kernel1: Coefficient for filter 1 + * @pad1: Padding byte + * @kernel2: Coefficient for filter 2 + * @pad2: Padding byte + * @kernel3: Coefficient for filter 3 + * @pad3: Padding byte + * @kernel4: Coefficient for filter 4 + * @pad4: Padding byte + * @threshold_offset0: Offset for filter 0 response calculation + * @threshold_slope0: Slope multiplier for the filter 0 response calculation + * @scale0: Scale factor for filter 0 response calculation + * @pad5: Padding byte + * @threshold_offset1: Offset for filter 0 response calculation + * @threshold_slope1: Slope multiplier for the filter 0 response calculation + * @scale1: Scale factor for filter 0 response calculation + * @pad6: Padding byte + * @threshold_offset2: Offset for filter 0 response calculation + * @threshold_slope2: Slope multiplier for the filter 0 response calculation + * @scale2: Scale factor for filter 0 response calculation + * @pad7: Padding byte + * @threshold_offset3: Offset for filter 0 response calculation + * @threshold_slope3: Slope multiplier for the filter 0 response calculation + * @scale3: Scale factor for filter 0 response calculation + * @pad8: Padding byte + * @threshold_offset4: Offset for filter 0 response calculation + * @threshold_slope4: Slope multiplier for the filter 0 response calculation + * @scale4: Scale factor for filter 0 response calculation + * @pad9: Padding byte + * @positive_strength: Factor to scale the positive sharpening strength + * @positive_pre_limit: Maximum allowed possible positive sharpening value + * @positive_func: Gain factor applied to positive sharpening response + * @positive_limit: Final gain factor applied to positive sharpening + * @negative_strength: Factor to scale the negative sharpening strength + * @negative_pre_limit: Maximum allowed possible negative sharpening value + * @negative_func: Gain factor applied to negative sharpening response + * @negative_limit: Final gain factor applied to negative sharpening + * @enables: Filter enable mask + * @white: White output pixel filter mask + * @black: Black output pixel filter mask + * @grey: Grey output pixel filter mask + */ +struct pisp_be_sharpen_config { + __s8 kernel0[PISP_BE_SHARPEN_SIZE * PISP_BE_SHARPEN_SIZE]; + __s8 pad0[3]; + __s8 kernel1[PISP_BE_SHARPEN_SIZE * PISP_BE_SHARPEN_SIZE]; + __s8 pad1[3]; + __s8 kernel2[PISP_BE_SHARPEN_SIZE * PISP_BE_SHARPEN_SIZE]; + __s8 pad2[3]; + __s8 kernel3[PISP_BE_SHARPEN_SIZE * PISP_BE_SHARPEN_SIZE]; + __s8 pad3[3]; + __s8 kernel4[PISP_BE_SHARPEN_SIZE * PISP_BE_SHARPEN_SIZE]; + __s8 pad4[3]; + __u16 threshold_offset0; + __u16 threshold_slope0; + __u16 scale0; + __u16 pad5; + __u16 threshold_offset1; + __u16 threshold_slope1; + __u16 scale1; + __u16 pad6; + __u16 threshold_offset2; + __u16 threshold_slope2; + __u16 scale2; + __u16 pad7; + __u16 threshold_offset3; + __u16 threshold_slope3; + __u16 scale3; + __u16 pad8; + __u16 threshold_offset4; + __u16 threshold_slope4; + __u16 scale4; + __u16 pad9; + __u16 positive_strength; + __u16 positive_pre_limit; + __u16 positive_func[PISP_BE_SHARPEN_FUNC_NUM_POINTS]; + __u16 positive_limit; + __u16 negative_strength; + __u16 negative_pre_limit; + __u16 negative_func[PISP_BE_SHARPEN_FUNC_NUM_POINTS]; + __u16 negative_limit; + __u8 enables; + __u8 white; + __u8 black; + __u8 grey; +} __attribute__((packed)); + +/** + * struct pisp_be_sh_fc_combine_config - PiSP Back End Sharpening and + * False Colour config + * + * Sharpening and False Colour configuration + * + * @y_factor: Control amount of desaturation of pixels being darkened + * @c1_factor: Control amount of brightening of a pixel for the Cb + * channel + * @c2_factor: Control amount of brightening of a pixel for the Cr + * channel + * @pad: Padding byte + */ +struct pisp_be_sh_fc_combine_config { + __u8 y_factor; + __u8 c1_factor; + __u8 c2_factor; + __u8 pad; +} __attribute__((packed)); + +#define PISP_BE_GAMMA_LUT_SIZE 64 + +/** + * struct pisp_be_gamma_config - PiSP Back End Gamma configuration + * @lut: Gamma curve look-up table + */ +struct pisp_be_gamma_config { + __u32 lut[PISP_BE_GAMMA_LUT_SIZE]; +} __attribute__((packed)); + +/** + * struct pisp_be_crop_config - PiSP Back End Crop config + * + * Crop configuration + * + * @offset_x: Number of pixels cropped from the left of the tile + * @offset_y: Number of pixels cropped from the top of the tile + * @width: Width of the cropped tile output + * @height: Height of the cropped tile output + */ +struct pisp_be_crop_config { + __u16 offset_x, offset_y; + __u16 width, height; +} __attribute__((packed)); + +#define PISP_BE_RESAMPLE_FILTER_SIZE 96 + +/** + * struct pisp_be_resample_config - PiSP Back End Resampling config + * + * Resample configuration + * + * @scale_factor_h: Horizontal scale factor + * @scale_factor_v: Vertical scale factor + * @coef: Resample coefficients + */ +struct pisp_be_resample_config { + __u16 scale_factor_h, scale_factor_v; + __s16 coef[PISP_BE_RESAMPLE_FILTER_SIZE]; +} __attribute__((packed)); + +/** + * struct pisp_be_resample_extra - PiSP Back End Resample config + * + * Resample configuration + * + * @scaled_width: Width in pixels of the scaled output + * @scaled_height: Height in pixels of the scaled output + * @initial_phase_h: Initial horizontal phase + * @initial_phase_v: Initial vertical phase + */ +struct pisp_be_resample_extra { + __u16 scaled_width; + __u16 scaled_height; + __s16 initial_phase_h[3]; + __s16 initial_phase_v[3]; +} __attribute__((packed)); + +/** + * struct pisp_be_downscale_config - PiSP Back End Downscale config + * + * Downscale configuration + * + * @scale_factor_h: Horizontal scale factor + * @scale_factor_v: Vertical scale factor + * @scale_recip_h: Horizontal reciprocal factor + * @scale_recip_v: Vertical reciprocal factor + */ +struct pisp_be_downscale_config { + __u16 scale_factor_h; + __u16 scale_factor_v; + __u16 scale_recip_h; + __u16 scale_recip_v; +} __attribute__((packed)); + +/** + * struct pisp_be_downscale_extra - PiSP Back End Downscale Extra config + * @scaled_width: Scaled image width + * @scaled_height: Scaled image height + */ +struct pisp_be_downscale_extra { + __u16 scaled_width; + __u16 scaled_height; +} __attribute__((packed)); + +/** + * struct pisp_be_hog_config - PiSP Back End HOG config + * + * Histogram of Oriented Gradients configuration + * + * @compute_signed: Set 0 for unsigned gradients, 1 for signed + * @channel_mix: Channels proportions to use + * @stride: Stride in bytes between blocks directly below + */ +struct pisp_be_hog_config { + __u8 compute_signed; + __u8 channel_mix[3]; + __u32 stride; +} __attribute__((packed)); + +struct pisp_be_axi_config { + __u8 r_qos; /* Read QoS */ + __u8 r_cache_prot; /* Read { prot[2:0], cache[3:0] } */ + __u8 w_qos; /* Write QoS */ + __u8 w_cache_prot; /* Write { prot[2:0], cache[3:0] } */ +} __attribute__((packed)); + +/** + * enum pisp_be_transform - PiSP Back End Transform flags + * @PISP_BE_TRANSFORM_NONE: No transform + * @PISP_BE_TRANSFORM_HFLIP: Horizontal flip + * @PISP_BE_TRANSFORM_VFLIP: Vertical flip + * @PISP_BE_TRANSFORM_ROT180: 180 degress rotation + */ +enum pisp_be_transform { + PISP_BE_TRANSFORM_NONE = 0x0, + PISP_BE_TRANSFORM_HFLIP = 0x1, + PISP_BE_TRANSFORM_VFLIP = 0x2, + PISP_BE_TRANSFORM_ROT180 = + (PISP_BE_TRANSFORM_HFLIP | PISP_BE_TRANSFORM_VFLIP) +}; + +struct pisp_be_output_format_config { + struct pisp_image_format_config image; + __u8 transform; + __u8 pad[3]; + __u16 lo; + __u16 hi; + __u16 lo2; + __u16 hi2; +} __attribute__((packed)); + +/** + * struct pisp_be_output_buffer_config - PiSP Back End Output buffer + * @addr: Output buffer address + */ +struct pisp_be_output_buffer_config { + /* low 32 bits followed by high 32 bits (for each of 3 planes) */ + __u32 addr[3][2]; +} __attribute__((packed)); + +/** + * struct pisp_be_hog_buffer_config - PiSP Back End HOG buffer + * @addr: HOG buffer address + */ +struct pisp_be_hog_buffer_config { + /* low 32 bits followed by high 32 bits */ + __u32 addr[2]; +} __attribute__((packed)); + +/** + * struct pisp_be_config - RaspberryPi PiSP Back End Processing configuration + * + * @global: Global PiSP configuration + * @input_format: Input image format + * @decompress: Decompress configuration + * @dpc: Defective Pixel Correction configuration + * @geq: Green Equalisation configuration + * @tdn_input_format: Temporal Denoise input format + * @tdn_decompress: Temporal Denoise decompress configuration + * @tdn: Temporal Denoise configuration + * @tdn_compress: Temporal Denoise compress configuration + * @tdn_output_format: Temporal Denoise output format + * @sdn: Spatial Denoise configuration + * @blc: Black Level Correction configuration + * @stitch_compress: Stitch compress configuration + * @stitch_output_format: Stitch output format + * @stitch_input_format: Stitch input format + * @stitch_decompress: Stitch decompress configuration + * @stitch: Stitch configuration + * @lsc: Lens Shading Correction configuration + * @wbg: White Balance Gain configuration + * @cdn: Colour Denoise configuration + * @cac: Colour Aberration Correction configuration + * @debin: Debinning configuration + * @tonemap: Tonemapping configuration + * @demosaic: Demosaicing configuration + * @ccm: Colour Correction Matrix configuration + * @sat_control: Saturation Control configuration + * @ycbcr: YCbCr colour correction configuration + * @sharpen: Sharpening configuration + * @false_colour: False colour correction + * @sh_fc_combine: Sharpening and False Colour correction + * @ycbcr_inverse: Inverse YCbCr colour correction + * @gamma: Gamma curve configuration + * @csc: Color Space Conversion configuration + * @downscale: Downscale configuration + * @resample: Resampling configuration + * @output_format: Output format configuration + * @hog: HOG configuration + */ +struct pisp_be_config { + struct pisp_be_global_config global; + struct pisp_image_format_config input_format; + struct pisp_decompress_config decompress; + struct pisp_be_dpc_config dpc; + struct pisp_be_geq_config geq; + struct pisp_image_format_config tdn_input_format; + struct pisp_decompress_config tdn_decompress; + struct pisp_be_tdn_config tdn; + struct pisp_compress_config tdn_compress; + struct pisp_image_format_config tdn_output_format; + struct pisp_be_sdn_config sdn; + struct pisp_bla_config blc; + struct pisp_compress_config stitch_compress; + struct pisp_image_format_config stitch_output_format; + struct pisp_image_format_config stitch_input_format; + struct pisp_decompress_config stitch_decompress; + struct pisp_be_stitch_config stitch; + struct pisp_be_lsc_config lsc; + struct pisp_wbg_config wbg; + struct pisp_be_cdn_config cdn; + struct pisp_be_cac_config cac; + struct pisp_be_debin_config debin; + struct pisp_be_tonemap_config tonemap; + struct pisp_be_demosaic_config demosaic; + struct pisp_be_ccm_config ccm; + struct pisp_be_sat_control_config sat_control; + struct pisp_be_ccm_config ycbcr; + struct pisp_be_sharpen_config sharpen; + struct pisp_be_false_colour_config false_colour; + struct pisp_be_sh_fc_combine_config sh_fc_combine; + struct pisp_be_ccm_config ycbcr_inverse; + struct pisp_be_gamma_config gamma; + struct pisp_be_ccm_config csc[PISP_BACK_END_NUM_OUTPUTS]; + struct pisp_be_downscale_config downscale[PISP_BACK_END_NUM_OUTPUTS]; + struct pisp_be_resample_config resample[PISP_BACK_END_NUM_OUTPUTS]; + struct pisp_be_output_format_config + output_format[PISP_BACK_END_NUM_OUTPUTS]; + struct pisp_be_hog_config hog; +} __attribute__((packed)); + +/** + * enum pisp_tile_edge - PiSP Back End Tile position + * @PISP_LEFT_EDGE: Left edge tile + * @PISP_RIGHT_EDGE: Right edge tile + * @PISP_TOP_EDGE: Top edge tile + * @PISP_BOTTOM_EDGE: Bottom edge tile + */ +enum pisp_tile_edge { + PISP_LEFT_EDGE = (1 << 0), + PISP_RIGHT_EDGE = (1 << 1), + PISP_TOP_EDGE = (1 << 2), + PISP_BOTTOM_EDGE = (1 << 3) +}; + +/** + * struct pisp_tile - Raspberry Pi PiSP Back End tile configuration + * + * Tile parameters: each set of tile parameters is a 160-bytes block of data + * which contains the tile processing parameters. + * + * @edge: Edge tile flag + * @pad0: Padding bytes + * @input_addr_offset: Top-left pixel offset, in bytes + * @input_addr_offset2: Top-left pixel offset, in bytes for the second/ + * third image planes + * @input_offset_x: Horizontal offset in pixels of this tile in the + * input image + * @input_offset_y: Vertical offset in pixels of this tile in the + * input image + * @input_width: Width in pixels of this tile + * @input_height: Height in pixels of the this tile + * @tdn_input_addr_offset: TDN input image offset, in bytes + * @tdn_output_addr_offset: TDN output image offset, in bytes + * @stitch_input_addr_offset: Stitch input image offset, in bytes + * @stitch_output_addr_offset: Stitch output image offset, in bytes + * @lsc_grid_offset_x: Horizontal offset in the LSC table for this tile + * @lsc_grid_offset_y: Vertical offset in the LSC table for this tile + * @cac_grid_offset_x: Horizontal offset in the CAC table for this tile + * @cac_grid_offset_y: Horizontal offset in the CAC table for this tile + * @crop_x_start: Number of pixels cropped from the left of the + * tile + * @crop_x_end: Number of pixels cropped from the right of the + * tile + * @crop_y_start: Number of pixels cropped from the top of the + * tile + * @crop_y_end: Number of pixels cropped from the bottom of the + * tile + * @downscale_phase_x: Initial horizontal phase in pixels + * @downscale_phase_y: Initial vertical phase in pixels + * @resample_in_width: Width in pixels of the tile entering the + * Resample block + * @resample_in_height: Height in pixels of the tile entering the + * Resample block + * @resample_phase_x: Initial horizontal phase for the Resample block + * @resample_phase_y: Initial vertical phase for the Resample block + * @output_offset_x: Horizontal offset in pixels where the tile will + * be written into the output image + * @output_offset_y: Vertical offset in pixels where the tile will be + * written into the output image + * @output_width: Width in pixels in the output image of this tile + * @output_height: Height in pixels in the output image of this tile + * @output_addr_offset: Offset in bytes into the output buffer + * @output_addr_offset2: Offset in bytes into the output buffer for the + * second and third plane + * @output_hog_addr_offset: Offset in bytes into the HOG buffer where + * results of this tile are to be written + */ +struct pisp_tile { + __u8 edge; /* enum pisp_tile_edge */ + __u8 pad0[3]; + /* 4 bytes */ + __u32 input_addr_offset; + __u32 input_addr_offset2; + __u16 input_offset_x; + __u16 input_offset_y; + __u16 input_width; + __u16 input_height; + /* 20 bytes */ + __u32 tdn_input_addr_offset; + __u32 tdn_output_addr_offset; + __u32 stitch_input_addr_offset; + __u32 stitch_output_addr_offset; + /* 36 bytes */ + __u32 lsc_grid_offset_x; + __u32 lsc_grid_offset_y; + /* 44 bytes */ + __u32 cac_grid_offset_x; + __u32 cac_grid_offset_y; + /* 52 bytes */ + __u16 crop_x_start[PISP_BACK_END_NUM_OUTPUTS]; + __u16 crop_x_end[PISP_BACK_END_NUM_OUTPUTS]; + __u16 crop_y_start[PISP_BACK_END_NUM_OUTPUTS]; + __u16 crop_y_end[PISP_BACK_END_NUM_OUTPUTS]; + /* 68 bytes */ + /* Ordering is planes then branches */ + __u16 downscale_phase_x[3 * PISP_BACK_END_NUM_OUTPUTS]; + __u16 downscale_phase_y[3 * PISP_BACK_END_NUM_OUTPUTS]; + /* 92 bytes */ + __u16 resample_in_width[PISP_BACK_END_NUM_OUTPUTS]; + __u16 resample_in_height[PISP_BACK_END_NUM_OUTPUTS]; + /* 100 bytes */ + /* Ordering is planes then branches */ + __u16 resample_phase_x[3 * PISP_BACK_END_NUM_OUTPUTS]; + __u16 resample_phase_y[3 * PISP_BACK_END_NUM_OUTPUTS]; + /* 124 bytes */ + __u16 output_offset_x[PISP_BACK_END_NUM_OUTPUTS]; + __u16 output_offset_y[PISP_BACK_END_NUM_OUTPUTS]; + __u16 output_width[PISP_BACK_END_NUM_OUTPUTS]; + __u16 output_height[PISP_BACK_END_NUM_OUTPUTS]; + /* 140 bytes */ + __u32 output_addr_offset[PISP_BACK_END_NUM_OUTPUTS]; + __u32 output_addr_offset2[PISP_BACK_END_NUM_OUTPUTS]; + /* 156 bytes */ + __u32 output_hog_addr_offset; + /* 160 bytes */ +} __attribute__((packed)); + +/** + * struct pisp_be_tiles_config - Raspberry Pi PiSP Back End configuration + * @tiles: Tile descriptors + * @num_tiles: Number of tiles + * @config: PiSP Back End configuration + */ +struct pisp_be_tiles_config { + struct pisp_tile tiles[PISP_BACK_END_NUM_TILES]; + int num_tiles; + struct pisp_be_config config; +} __attribute__((packed)); + +#endif /* _UAPI_PISP_BE_CONFIG_H_ */ diff --git a/include/uapi/linux/media/raspberrypi/pisp_common.h b/include/uapi/linux/media/raspberrypi/pisp_common.h new file mode 100644 index 000000000000..b2522e29c976 --- /dev/null +++ b/include/uapi/linux/media/raspberrypi/pisp_common.h @@ -0,0 +1,199 @@ +/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */ +/* + * RP1 PiSP common definitions. + * + * Copyright (C) 2021 - Raspberry Pi Ltd. + * + */ +#ifndef _UAPI_PISP_COMMON_H_ +#define _UAPI_PISP_COMMON_H_ + +#include + +struct pisp_image_format_config { + /* size in pixels */ + __u16 width; + __u16 height; + /* must match struct pisp_image_format below */ + __u32 format; + __s32 stride; + /* some planar image formats will need a second stride */ + __s32 stride2; +} __attribute__((packed)); + +enum pisp_bayer_order { + /* + * Note how bayer_order&1 tells you if G is on the even pixels of the + * checkerboard or not, and bayer_order&2 tells you if R is on the even + * rows or is swapped with B. Note that if the top (of the 8) bits is + * set, this denotes a monochrome or greyscale image, and the lower bits + * should all be ignored. + */ + PISP_BAYER_ORDER_RGGB = 0, + PISP_BAYER_ORDER_GBRG = 1, + PISP_BAYER_ORDER_BGGR = 2, + PISP_BAYER_ORDER_GRBG = 3, + PISP_BAYER_ORDER_GREYSCALE = 128 +}; + +enum pisp_image_format { + /* + * Precise values are mostly tbd. Generally these will be portmanteau + * values comprising bit fields and flags. This format must be shared + * throughout the PiSP. + */ + PISP_IMAGE_FORMAT_BPS_8 = 0x00000000, + PISP_IMAGE_FORMAT_BPS_10 = 0x00000001, + PISP_IMAGE_FORMAT_BPS_12 = 0x00000002, + PISP_IMAGE_FORMAT_BPS_16 = 0x00000003, + PISP_IMAGE_FORMAT_BPS_MASK = 0x00000003, + + PISP_IMAGE_FORMAT_PLANARITY_INTERLEAVED = 0x00000000, + PISP_IMAGE_FORMAT_PLANARITY_SEMI_PLANAR = 0x00000010, + PISP_IMAGE_FORMAT_PLANARITY_PLANAR = 0x00000020, + PISP_IMAGE_FORMAT_PLANARITY_MASK = 0x00000030, + + PISP_IMAGE_FORMAT_SAMPLING_444 = 0x00000000, + PISP_IMAGE_FORMAT_SAMPLING_422 = 0x00000100, + PISP_IMAGE_FORMAT_SAMPLING_420 = 0x00000200, + PISP_IMAGE_FORMAT_SAMPLING_MASK = 0x00000300, + + PISP_IMAGE_FORMAT_ORDER_NORMAL = 0x00000000, + PISP_IMAGE_FORMAT_ORDER_SWAPPED = 0x00001000, + + PISP_IMAGE_FORMAT_SHIFT_0 = 0x00000000, + PISP_IMAGE_FORMAT_SHIFT_1 = 0x00010000, + PISP_IMAGE_FORMAT_SHIFT_2 = 0x00020000, + PISP_IMAGE_FORMAT_SHIFT_3 = 0x00030000, + PISP_IMAGE_FORMAT_SHIFT_4 = 0x00040000, + PISP_IMAGE_FORMAT_SHIFT_5 = 0x00050000, + PISP_IMAGE_FORMAT_SHIFT_6 = 0x00060000, + PISP_IMAGE_FORMAT_SHIFT_7 = 0x00070000, + PISP_IMAGE_FORMAT_SHIFT_8 = 0x00080000, + PISP_IMAGE_FORMAT_SHIFT_MASK = 0x000f0000, + + PISP_IMAGE_FORMAT_UNCOMPRESSED = 0x00000000, + PISP_IMAGE_FORMAT_COMPRESSION_MODE_1 = 0x01000000, + PISP_IMAGE_FORMAT_COMPRESSION_MODE_2 = 0x02000000, + PISP_IMAGE_FORMAT_COMPRESSION_MODE_3 = 0x03000000, + PISP_IMAGE_FORMAT_COMPRESSION_MASK = 0x03000000, + + PISP_IMAGE_FORMAT_HOG_SIGNED = 0x04000000, + PISP_IMAGE_FORMAT_HOG_UNSIGNED = 0x08000000, + PISP_IMAGE_FORMAT_INTEGRAL_IMAGE = 0x10000000, + PISP_IMAGE_FORMAT_WALLPAPER_ROLL = 0x20000000, + PISP_IMAGE_FORMAT_THREE_CHANNEL = 0x40000000, + + /* Lastly a few specific instantiations of the above. */ + PISP_IMAGE_FORMAT_SINGLE_16 = PISP_IMAGE_FORMAT_BPS_16, + PISP_IMAGE_FORMAT_THREE_16 = PISP_IMAGE_FORMAT_BPS_16 | + PISP_IMAGE_FORMAT_THREE_CHANNEL +}; + +#define PISP_IMAGE_FORMAT_bps_8(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_BPS_MASK) == PISP_IMAGE_FORMAT_BPS_8) +#define PISP_IMAGE_FORMAT_bps_10(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_BPS_MASK) == PISP_IMAGE_FORMAT_BPS_10) +#define PISP_IMAGE_FORMAT_bps_12(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_BPS_MASK) == PISP_IMAGE_FORMAT_BPS_12) +#define PISP_IMAGE_FORMAT_bps_16(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_BPS_MASK) == PISP_IMAGE_FORMAT_BPS_16) +#define PISP_IMAGE_FORMAT_bps(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_BPS_MASK) ? \ + 8 + (2 << (((fmt) & PISP_IMAGE_FORMAT_BPS_MASK) - 1)) : 8) +#define PISP_IMAGE_FORMAT_shift(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_SHIFT_MASK) / PISP_IMAGE_FORMAT_SHIFT_1) +#define PISP_IMAGE_FORMAT_three_channel(fmt) \ + ((fmt) & PISP_IMAGE_FORMAT_THREE_CHANNEL) +#define PISP_IMAGE_FORMAT_single_channel(fmt) \ + (!((fmt) & PISP_IMAGE_FORMAT_THREE_CHANNEL)) +#define PISP_IMAGE_FORMAT_compressed(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_COMPRESSION_MASK) != \ + PISP_IMAGE_FORMAT_UNCOMPRESSED) +#define PISP_IMAGE_FORMAT_sampling_444(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_SAMPLING_MASK) == \ + PISP_IMAGE_FORMAT_SAMPLING_444) +#define PISP_IMAGE_FORMAT_sampling_422(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_SAMPLING_MASK) == \ + PISP_IMAGE_FORMAT_SAMPLING_422) +#define PISP_IMAGE_FORMAT_sampling_420(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_SAMPLING_MASK) == \ + PISP_IMAGE_FORMAT_SAMPLING_420) +#define PISP_IMAGE_FORMAT_order_normal(fmt) \ + (!((fmt) & PISP_IMAGE_FORMAT_ORDER_SWAPPED)) +#define PISP_IMAGE_FORMAT_order_swapped(fmt) \ + ((fmt) & PISP_IMAGE_FORMAT_ORDER_SWAPPED) +#define PISP_IMAGE_FORMAT_interleaved(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_PLANARITY_MASK) == \ + PISP_IMAGE_FORMAT_PLANARITY_INTERLEAVED) +#define PISP_IMAGE_FORMAT_semiplanar(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_PLANARITY_MASK) == \ + PISP_IMAGE_FORMAT_PLANARITY_SEMI_PLANAR) +#define PISP_IMAGE_FORMAT_planar(fmt) \ + (((fmt) & PISP_IMAGE_FORMAT_PLANARITY_MASK) == \ + PISP_IMAGE_FORMAT_PLANARITY_PLANAR) +#define PISP_IMAGE_FORMAT_wallpaper(fmt) \ + ((fmt) & PISP_IMAGE_FORMAT_WALLPAPER_ROLL) +#define PISP_IMAGE_FORMAT_HOG(fmt) \ + ((fmt) & \ + (PISP_IMAGE_FORMAT_HOG_SIGNED | PISP_IMAGE_FORMAT_HOG_UNSIGNED)) + +#define PISP_WALLPAPER_WIDTH 128 /* in bytes */ + +struct pisp_bla_config { + __u16 black_level_r; + __u16 black_level_gr; + __u16 black_level_gb; + __u16 black_level_b; + __u16 output_black_level; + __u8 pad[2]; +} __attribute__((packed)); + +struct pisp_wbg_config { + __u16 gain_r; + __u16 gain_g; + __u16 gain_b; + __u8 pad[2]; +} __attribute__((packed)); + +struct pisp_compress_config { + /* value subtracted from incoming data */ + __u16 offset; + __u8 pad; + /* 1 => Companding; 2 => Delta (recommended); 3 => Combined (for HDR) */ + __u8 mode; +} __attribute__((packed)); + +struct pisp_decompress_config { + /* value added to reconstructed data */ + __u16 offset; + __u8 pad; + /* 1 => Companding; 2 => Delta (recommended); 3 => Combined (for HDR) */ + __u8 mode; +} __attribute__((packed)); + +enum pisp_axi_flags { + /* + * round down bursts to end at a 32-byte boundary, to align following + * bursts + */ + PISP_AXI_FLAG_ALIGN = 128, + /* for FE writer: force WSTRB high, to pad output to 16-byte boundary */ + PISP_AXI_FLAG_PAD = 64, + /* for FE writer: Use Output FIFO level to trigger "panic" */ + PISP_AXI_FLAG_PANIC = 32, +}; + +struct pisp_axi_config { + /* + * burst length minus one, which must be in the range 0:15; OR'd with + * flags + */ + __u8 maxlen_flags; + /* { prot[2:0], cache[3:0] } fields, echoed on AXI bus */ + __u8 cache_prot; + /* QoS field(s) (4x4 bits for FE writer; 4 bits for other masters) */ + __u16 qos; +} __attribute__((packed)); + +#endif /* _UAPI_PISP_COMMON_H_ */ From patchwork Fri May 31 08:07:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13681297 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 9A50053362 for ; Fri, 31 May 2024 08:07:39 +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; 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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="AxuNxz83" Received: from localhost.localdomain (93-61-96-190.ip145.fastwebnet.it [93.61.96.190]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id EAA2311A3; Fri, 31 May 2024 10:07:28 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1717142849; bh=PO8+O3X8Ga8ORFPrQigvaz/Bf32eKQBhmpdKkmihLWc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AxuNxz83XQBYsXGA4kIOuKvHu7J9NyiqA9hCUxCL0Pshh104JsPIYe0orKG5lXIUl jXOSge+7Bl93r3rvw5UZ7GpJmFg9xTwmcs2RCf3X6sIOTg5LvItRFwmE2sUvpet8Ro UnyMSVda33OLEEWfB8lgCJTE5mHbCk4XgLMscGxw= 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 v9 4/8] media: uapi: Add meta pixel format for PiSP BE config Date: Fri, 31 May 2024 10:07:03 +0200 Message-ID: <20240531080707.34568-5-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531080707.34568-1-jacopo.mondi@ideasonboard.com> References: <20240531080707.34568-1-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 From patchwork Fri May 31 08:07:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13681298 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 DE5DD76F1B for ; Fri, 31 May 2024 08:07:40 +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=1717142862; cv=none; b=cBJz4iiLkYI/Hj9oEkkC0exOmILWsiFkoSOjvrp6va6fUNHWpS0Z0oSBJdslNZV4PQpIv7sf7HZ5RWfVBid9sQOesol0XoAP+JvjFjXzyOQYOXjApR10ay6UQkjqxki4NtJU2XXZ9rPgieJVHxeRzcepZc99IytEJa/xVTN78l8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717142862; c=relaxed/simple; bh=kvYiZZgEYUBYAfrid37kiMhBiLfc9izccH/yMlA28CU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jGa7CW2TZ7BbDIUkJPMk8tfscLp8o7ja+2dBdIvH5oz2nwaq/vO5JfvkDHtQlmC35DwjVU5q/nidqw3v/B9uq9hZwqY/QT9Ib+LTzsaP18sOx/h7qvmGAUajCME6vWppT1O9R5DwGkXh0vKxUl5h/K96ClNQBikKRJHd/A0i7Dw= 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=Cnlksu2Q; 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="Cnlksu2Q" Received: from localhost.localdomain (93-61-96-190.ip145.fastwebnet.it [93.61.96.190]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id C1E5D2D31; Fri, 31 May 2024 10:07:29 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1717142850; bh=kvYiZZgEYUBYAfrid37kiMhBiLfc9izccH/yMlA28CU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Cnlksu2Qnjcl2L2/9jr8mPI9Xbng5H7YQEIjJB4tn//34xhMHFa5tZ9di/irwB4zW beYWs4M4gblpvBIJ7eWmBJzMAzdVB89hj60J6lap1k+zulTaWAIitA9dopG12+sgRl jeg019X8ncy8ud2iD/YBmjxudFnwGYiuO21sdduw= 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 v9 5/8] media: uapi: Add PiSP Compressed RAW Bayer formats Date: Fri, 31 May 2024 10:07:04 +0200 Message-ID: <20240531080707.34568-6-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531080707.34568-1-jacopo.mondi@ideasonboard.com> References: <20240531080707.34568-1-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 Raspberry Pi compressed RAW Bayer formats. The compression algorithm description is provided by Nick Hollinghurst from Raspberry Pi. Signed-off-by: Jacopo Mondi Reviewed-by: Naushir Patuck --- .../userspace-api/media/v4l/pixfmt-bayer.rst | 1 + .../media/v4l/pixfmt-srggb8-pisp-comp.rst | 74 +++++++++++++++++++ drivers/media/v4l2-core/v4l2-ioctl.c | 10 +++ include/uapi/linux/videodev2.h | 12 +++ 4 files changed, 97 insertions(+) create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-srggb8-pisp-comp.rst diff --git a/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst b/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst index 2500413e5f43..ed3eb432967d 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst @@ -20,6 +20,7 @@ orders. See also `the Wikipedia article on Bayer filter :maxdepth: 1 pixfmt-srggb8 + pixfmt-srggb8-pisp-comp pixfmt-srggb10 pixfmt-srggb10p pixfmt-srggb10alaw8 diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb8-pisp-comp.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb8-pisp-comp.rst new file mode 100644 index 000000000000..5a82a15559d6 --- /dev/null +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb8-pisp-comp.rst @@ -0,0 +1,74 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later + +.. _v4l2-pix-fmt-pisp-comp1-rggb: +.. _v4l2-pix-fmt-pisp-comp1-grbg: +.. _v4l2-pix-fmt-pisp-comp1-gbrg: +.. _v4l2-pix-fmt-pisp-comp1-bggr: +.. _v4l2-pix-fmt-pisp-comp1-mono: +.. _v4l2-pix-fmt-pisp-comp2-rggb: +.. _v4l2-pix-fmt-pisp-comp2-grbg: +.. _v4l2-pix-fmt-pisp-comp2-gbrg: +.. _v4l2-pix-fmt-pisp-comp2-bggr: +.. _v4l2-pix-fmt-pisp-comp2-mono: + +************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************** +V4L2_PIX_FMT_PISP_COMP1_RGGB ('PC1R'), V4L2_PIX_FMT_PISP_COMP1_GRBG ('PC1G'), V4L2_PIX_FMT_PISP_COMP1_GBRG ('PC1g'), V4L2_PIX_FMT_PISP_COMP1_BGGR ('PC1B), V4L2_PIX_FMT_PISP_COMP1_MONO ('PC1M'), V4L2_PIX_FMT_PISP_COMP2_RGGB ('PC2R'), V4L2_PIX_FMT_PISP_COMP2_GRBG ('PC2G'), V4L2_PIX_FMT_PISP_COMP2_GBRG ('PC2g'), V4L2_PIX_FMT_PISP_COMP2_BGGR ('PC2B), V4L2_PIX_FMT_PISP_COMP2_MONO ('PC2M') +************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************** + +================================================ +Raspberry Pi PiSP compressed 8-bit Bayer formats +================================================ + +Description +=========== + +The Raspberry Pi ISP (PiSP) uses a family of three fixed-rate compressed Bayer +formats. A black-level offset may be subtracted to improve compression +efficiency; the nominal black level and amount of offset must be signalled out +of band. Each scanline is padded to a multiple of 8 pixels wide, and each block +of 8 horizontally-contiguous pixels is coded using 8 bytes. + +Mode 1 uses a quantization and delta-based coding scheme which preserves up to +12 significant bits. Mode 2 is a simple sqrt-like companding scheme with 6 PWL +chords, preserving up to 12 significant bits. Mode 3 combines both companding +(with 4 chords) and the delta scheme, preserving up to 14 significant bits. + +The remainder of this description applies to Modes 1 and 3. + +Each block of 8 pixels is separated into even and odd phases of 4 pixels, +coded independently by 32-bit words at successive locations in memory. +The two LS bits of each 32-bit word give its "quantization mode". + +In quantization mode 0, the lowest 321 quantization levels are multiples of +FSD/4096 and the remaining levels are successive multiples of FSD/2048. +Quantization modes 1 and 2 use linear quantization with step sizes of +FSD/1024 and FSD/512 respectively. Each of the four pixels is quantized +independently, with rounding to the nearest level. +In quantization mode 2 where the middle two samples have quantized values +(q1,q2) both in the range [384..511], they are coded using 9 bits for q1 +followed by 7 bits for (q2 & 127). Otherwise, for quantization modes +0, 1 and 2: a 9-bit field encodes MIN(q1,q2) which must be in the range +[0..511] and a 7-bit field encodes (q2-q1+64) which must be in [0..127]. + +Each of the outer samples (q0,q3) is encoded using a 7-bit field based +on its inner neighbour q1 or q2. In quantization mode 2 where the inner +sample has a quantized value in the range [448..511], the field value is +(q0-384). Otherwise for quantization modes 0, 1 and 2: The outer sample +is encoded as (q0-MAX(0,q1-64)). q3 is likewise coded based on q2. +Each of these values must be in the range [0..127]. All these fields +of 2, 9, 7, 7, 7 bits respectively are packed in little-endian order +to give a 32-bit word with LE byte order. + +Quantization mode 3 has a "7.5-bit" escape, used when none of the above +encodings will fit. Each pixel value is quantized to the nearest of 176 +levels, where the lowest 95 levels are multiples of FSD/256 and the +remaining levels are multiples of FSD/128 (level 175 represents values +very close to FSD and may require saturating arithmetic to decode). + +Each pair of quantized pixels (q0,q1) or (q2,q3) is jointly coded +by a 15-bit field: 2816*(q0>>4) + 16*q1 + (q0&15). +Three fields of 2, 15, 15 bits are packed in LE order {15,15,2}. + +An implementation of a software decoder of compressed formats is available +in `Raspberry Pi camera applications code base +`_. diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 7c684788997c..5eb4d797d259 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1532,6 +1532,16 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_PIX_FMT_MT2110T: descr = "Mediatek 10bit Tile Mode"; break; case V4L2_PIX_FMT_MT2110R: descr = "Mediatek 10bit Raster Mode"; break; case V4L2_PIX_FMT_HEXTILE: descr = "Hextile Compressed Format"; break; + case V4L2_PIX_FMT_PISP_COMP1_RGGB: descr = "PiSP 8b RGRG/GBGB mode1 compr"; break; + case V4L2_PIX_FMT_PISP_COMP1_GRBG: descr = "PiSP 8b GRGR/BGBG mode1 compr"; break; + case V4L2_PIX_FMT_PISP_COMP1_GBRG: descr = "PiSP 8b GBGB/RGRG mode1 compr"; break; + case V4L2_PIX_FMT_PISP_COMP1_BGGR: descr = "PiSP 8b BGBG/GRGR mode1 compr"; break; + case V4L2_PIX_FMT_PISP_COMP1_MONO: descr = "PiSP 8b monochrome mode1 compr"; break; + case V4L2_PIX_FMT_PISP_COMP2_RGGB: descr = "PiSP 8b RGRG/GBGB mode2 compr"; break; + case V4L2_PIX_FMT_PISP_COMP2_GRBG: descr = "PiSP 8b GRGR/BGBG mode2 compr"; break; + case V4L2_PIX_FMT_PISP_COMP2_GBRG: descr = "PiSP 8b GBGB/RGRG mode2 compr"; break; + case V4L2_PIX_FMT_PISP_COMP2_BGGR: descr = "PiSP 8b BGBG/GRGR mode2 compr"; break; + case V4L2_PIX_FMT_PISP_COMP2_MONO: descr = "PiSP 8b monochrome mode2 compr"; break; default: if (fmt->description[0]) return; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 96fc0456081e..4e91362da6da 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -816,6 +816,18 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_IPU3_SGRBG10 v4l2_fourcc('i', 'p', '3', 'G') /* IPU3 packed 10-bit GRBG bayer */ #define V4L2_PIX_FMT_IPU3_SRGGB10 v4l2_fourcc('i', 'p', '3', 'r') /* IPU3 packed 10-bit RGGB bayer */ +/* Raspberry Pi PiSP compressed formats. */ +#define V4L2_PIX_FMT_PISP_COMP1_RGGB v4l2_fourcc('P', 'C', '1', 'R') /* PiSP 8-bit mode 1 compressed RGGB bayer */ +#define V4L2_PIX_FMT_PISP_COMP1_GRBG v4l2_fourcc('P', 'C', '1', 'G') /* PiSP 8-bit mode 1 compressed GRBG bayer */ +#define V4L2_PIX_FMT_PISP_COMP1_GBRG v4l2_fourcc('P', 'C', '1', 'g') /* PiSP 8-bit mode 1 compressed GBRG bayer */ +#define V4L2_PIX_FMT_PISP_COMP1_BGGR v4l2_fourcc('P', 'C', '1', 'B') /* PiSP 8-bit mode 1 compressed BGGR bayer */ +#define V4L2_PIX_FMT_PISP_COMP1_MONO v4l2_fourcc('P', 'C', '1', 'M') /* PiSP 8-bit mode 1 compressed monochrome */ +#define V4L2_PIX_FMT_PISP_COMP2_RGGB v4l2_fourcc('P', 'C', '2', 'R') /* PiSP 8-bit mode 2 compressed RGGB bayer */ +#define V4L2_PIX_FMT_PISP_COMP2_GRBG v4l2_fourcc('P', 'C', '2', 'G') /* PiSP 8-bit mode 2 compressed GRBG bayer */ +#define V4L2_PIX_FMT_PISP_COMP2_GBRG v4l2_fourcc('P', 'C', '2', 'g') /* PiSP 8-bit mode 2 compressed GBRG bayer */ +#define V4L2_PIX_FMT_PISP_COMP2_BGGR v4l2_fourcc('P', 'C', '2', 'B') /* PiSP 8-bit mode 2 compressed BGGR bayer */ +#define V4L2_PIX_FMT_PISP_COMP2_MONO v4l2_fourcc('P', 'C', '2', 'M') /* PiSP 8-bit mode 2 compressed monochrome */ + /* SDR formats - used only for Software Defined Radio devices */ #define V4L2_SDR_FMT_CU8 v4l2_fourcc('C', 'U', '0', '8') /* IQ u8 */ #define V4L2_SDR_FMT_CU16LE v4l2_fourcc('C', 'U', '1', '6') /* IQ u16le */ From patchwork Fri May 31 08:07:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13681299 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 B8D47770EE; Fri, 31 May 2024 08:07:42 +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=1717142864; cv=none; b=fthwblLAwlRZUx1HcOAsC+szIEdN+1gOriOPXKf0z8J5ogWo1EFqU11LO3C/MsLXo75P2x4AxzHzzRjXgGcqYEbRMmodljOsNNToe+7xmJpMMjXBO+0steJ4z0e455glQKXhU4XCQ7ZR/mWjb0rREChwUnIbipCehrXouvRQm10= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717142864; c=relaxed/simple; bh=dT1hNwAhsUBwuh7h4TJ/wihzfcTUekeem+CujivCF8o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; 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a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1717142851; bh=dT1hNwAhsUBwuh7h4TJ/wihzfcTUekeem+CujivCF8o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ofgqlVDavAnFlQuu+GTyJ1mTQUNQiGbZFcNkEixmA0oXQUFVbnBGbzr7AKQqHCdCS Y1VHU6kksgn8Vd75+RGdbLBzy5uOeMbFAIl9rnApJNs/L4qw5ZysRa+kP0UF+vp778 9AFxcAoaiPVeH7SUuT5es06CTl8B3I+QUyK0r6kM= From: Jacopo Mondi To: Linux Media Mailing List , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Jacopo Mondi , David Plowman , Naushir Patuck , Nick Hollinghurst , Dave Stevenson , Tomi Valkeinen , Laurent Pinchart , Kieran Bingham , Sakari Ailus , Hans Verkuil , Mauro Carvalho Chehab , devicetree@vger.kernel.org, Rob Herring Subject: [PATCH v9 6/8] media: dt-bindings: Add bindings for Raspberry Pi PiSP Back End Date: Fri, 31 May 2024 10:07:05 +0200 Message-ID: <20240531080707.34568-7-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531080707.34568-1-jacopo.mondi@ideasonboard.com> References: <20240531080707.34568-1-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 bindings for the Raspberry Pi PiSP Back End memory-to-memory image signal processor. Datasheet: https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf Signed-off-by: Jacopo Mondi Reviewed-by: Rob Herring Reviewed-by: Naushir Patuck --- .../bindings/media/raspberrypi,pispbe.yaml | 63 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml -- 2.45.1 diff --git a/Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml b/Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml new file mode 100644 index 000000000000..1fc62a1d8eda --- /dev/null +++ b/Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/raspberrypi,pispbe.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Raspberry Pi PiSP Image Signal Processor (ISP) Back End + +maintainers: + - Raspberry Pi Kernel Maintenance + - Jacopo Mondi + +description: | + The Raspberry Pi PiSP Image Signal Processor (ISP) Back End is an image + processor that fetches images in Bayer or Grayscale format from DRAM memory + in tiles and produces images consumable by applications. + + The full ISP documentation is available at + https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf + +properties: + compatible: + items: + - enum: + - brcm,bcm2712-pispbe + - const: raspberrypi,pispbe + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + iommus: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - clocks + +additionalProperties: false + +examples: + - | + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + isp@880000 { + compatible = "brcm,bcm2712-pispbe", "raspberrypi,pispbe"; + reg = <0x10 0x00880000 0x0 0x4000>; + interrupts = ; + clocks = <&firmware_clocks 7>; + iommus = <&iommu2>; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 97f2bb162730..7291e8ef0585 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18777,6 +18777,7 @@ M: Jacopo Mondi L: Raspberry Pi Kernel Maintenance L: linux-media@vger.kernel.org S: Maintained +F: Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml F: include/uapi/linux/media/raspberrypi/ RC-CORE / LIRC FRAMEWORK From patchwork Fri May 31 08:07:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13681301 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 E662176F1B for ; 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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="agjd1/R1" Received: from localhost.localdomain (93-61-96-190.ip145.fastwebnet.it [93.61.96.190]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id AD9982D5F; Fri, 31 May 2024 10:07:31 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1717142852; bh=Uhme/3WwGmSx4OaqQBdJksinCb0iyRGtw/eng+6MI6M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=agjd1/R1JrB4xL+MxtCZRdNTeNNQkd11sittJIKs/e2qiFi/2LCDsX+QywKk5sB3Y qgfzVD/XRjCj8t613P7X7GsGcY2VgI/bn65QrIer8rZTS8hbRgDV1ouCqnqA5/tm0w 5RBFaXSMv/+mq2PYFl8Eo6hMsykyL0UEoXrtWMXQ= 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 v9 7/8] media: raspberrypi: Add support for PiSP BE Date: Fri, 31 May 2024 10:07:06 +0200 Message-ID: <20240531080707.34568-8-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531080707.34568-1-jacopo.mondi@ideasonboard.com> References: <20240531080707.34568-1-jacopo.mondi@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Naushir Patuck Add support for the Raspberry Pi PiSP Back End. The driver has been upported from the Raspberry Pi kernel at revision f74893f8a0c2 ("drivers: media: pisp_be: Update seqeuence numbers of the buffers"). The ISP documentation is available at: https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf Signed-off-by: David Plowman Signed-off-by: Naushir Patuck Signed-off-by: Nick Hollinghurst Signed-off-by: Jacopo Mondi --- MAINTAINERS | 1 + drivers/media/platform/Kconfig | 1 + drivers/media/platform/Makefile | 1 + drivers/media/platform/raspberrypi/Kconfig | 5 + drivers/media/platform/raspberrypi/Makefile | 3 + .../platform/raspberrypi/pisp_be/Kconfig | 12 + .../platform/raspberrypi/pisp_be/Makefile | 6 + .../platform/raspberrypi/pisp_be/pisp_be.c | 1809 +++++++++++++++++ .../raspberrypi/pisp_be/pisp_be_formats.h | 519 +++++ 9 files changed, 2357 insertions(+) create mode 100644 drivers/media/platform/raspberrypi/Kconfig create mode 100644 drivers/media/platform/raspberrypi/Makefile create mode 100644 drivers/media/platform/raspberrypi/pisp_be/Kconfig create mode 100644 drivers/media/platform/raspberrypi/pisp_be/Makefile create mode 100644 drivers/media/platform/raspberrypi/pisp_be/pisp_be.c create mode 100644 drivers/media/platform/raspberrypi/pisp_be/pisp_be_formats.h diff --git a/MAINTAINERS b/MAINTAINERS index 7291e8ef0585..ce0744b43e01 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18778,6 +18778,7 @@ L: Raspberry Pi Kernel Maintenance L: linux-media@vger.kernel.org S: Maintained F: Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml +F: drivers/media/platform/raspberrypi/pisp_be/ F: include/uapi/linux/media/raspberrypi/ RC-CORE / LIRC FRAMEWORK diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 2d79bfc68c15..36353174a7d9 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -78,6 +78,7 @@ source "drivers/media/platform/nuvoton/Kconfig" source "drivers/media/platform/nvidia/Kconfig" source "drivers/media/platform/nxp/Kconfig" source "drivers/media/platform/qcom/Kconfig" +source "drivers/media/platform/raspberrypi/Kconfig" source "drivers/media/platform/renesas/Kconfig" source "drivers/media/platform/rockchip/Kconfig" source "drivers/media/platform/samsung/Kconfig" diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile index da17301f7439..4b04c51bdd8b 100644 --- a/drivers/media/platform/Makefile +++ b/drivers/media/platform/Makefile @@ -21,6 +21,7 @@ obj-y += nuvoton/ obj-y += nvidia/ obj-y += nxp/ obj-y += qcom/ +obj-y += raspberrypi/ obj-y += renesas/ obj-y += rockchip/ obj-y += samsung/ diff --git a/drivers/media/platform/raspberrypi/Kconfig b/drivers/media/platform/raspberrypi/Kconfig new file mode 100644 index 000000000000..e928f979019e --- /dev/null +++ b/drivers/media/platform/raspberrypi/Kconfig @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0-only + +comment "Raspberry Pi media platform drivers" + +source "drivers/media/platform/raspberrypi/pisp_be/Kconfig" diff --git a/drivers/media/platform/raspberrypi/Makefile b/drivers/media/platform/raspberrypi/Makefile new file mode 100644 index 000000000000..c0d1a2dab486 --- /dev/null +++ b/drivers/media/platform/raspberrypi/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-y += pisp_be/ diff --git a/drivers/media/platform/raspberrypi/pisp_be/Kconfig b/drivers/media/platform/raspberrypi/pisp_be/Kconfig new file mode 100644 index 000000000000..38c0f8305d62 --- /dev/null +++ b/drivers/media/platform/raspberrypi/pisp_be/Kconfig @@ -0,0 +1,12 @@ +config VIDEO_RASPBERRYPI_PISP_BE + tristate "Raspberry Pi PiSP Backend (BE) ISP driver" + depends on V4L_PLATFORM_DRIVERS + depends on VIDEO_DEV + select VIDEO_V4L2_SUBDEV_API + select MEDIA_CONTROLLER + select VIDEOBUF2_DMA_CONTIG + help + Say Y here to enable support for the PiSP Backend (BE) ISP driver. + + To compile this driver as a module, choose M here. The module will be + called pisp-be. diff --git a/drivers/media/platform/raspberrypi/pisp_be/Makefile b/drivers/media/platform/raspberrypi/pisp_be/Makefile new file mode 100644 index 000000000000..a70bf5716824 --- /dev/null +++ b/drivers/media/platform/raspberrypi/pisp_be/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for Raspberry Pi PiSP Backend driver +# +pisp-be-objs := pisp_be.o +obj-$(CONFIG_VIDEO_RASPBERRYPI_PISP_BE) += pisp-be.o diff --git a/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c b/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c new file mode 100644 index 000000000000..7ce07e0271b7 --- /dev/null +++ b/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c @@ -0,0 +1,1809 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PiSP Back End driver. + * Copyright (c) 2021-2024 Raspberry Pi Limited. + * + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "pisp_be_formats.h" + +/* Maximum number of config buffers possible */ +#define PISP_BE_NUM_CONFIG_BUFFERS VB2_MAX_FRAME + +#define PISPBE_NAME "pispbe" + +/* Some ISP-BE registers */ +#define PISP_BE_VERSION_REG 0x0 +#define PISP_BE_CONTROL_REG 0x4 +#define PISP_BE_CONTROL_COPY_CONFIG BIT(1) +#define PISP_BE_CONTROL_QUEUE_JOB BIT(0) +#define PISP_BE_CONTROL_NUM_TILES(n) ((n) << 16) +#define PISP_BE_TILE_ADDR_LO_REG 0x8 +#define PISP_BE_TILE_ADDR_HI_REG 0xc +#define PISP_BE_STATUS_REG 0x10 +#define PISP_BE_STATUS_QUEUED BIT(0) +#define PISP_BE_BATCH_STATUS_REG 0x14 +#define PISP_BE_INTERRUPT_EN_REG 0x18 +#define PISP_BE_INTERRUPT_STATUS_REG 0x1c +#define PISP_BE_AXI_REG 0x20 +#define PISP_BE_CONFIG_BASE_REG 0x40 +#define PISP_BE_IO_ADDR_LOW(n) (PISP_BE_CONFIG_BASE_REG + 8 * (n)) +#define PISP_BE_IO_ADDR_HIGH(n) (PISP_BE_IO_ADDR_LOW((n)) + 4) +#define PISP_BE_GLOBAL_BAYER_ENABLE 0xb0 +#define PISP_BE_GLOBAL_RGB_ENABLE 0xb4 +#define N_HW_ADDRESSES 13 +#define N_HW_ENABLES 2 + +#define PISP_BE_VERSION_2712 0x02252700 +#define PISP_BE_VERSION_MINOR_BITS 0xf + +/* + * This maps our nodes onto the inputs/outputs of the actual PiSP Back End. + * Be wary of the word "OUTPUT" which is used ambiguously here. In a V4L2 + * context it means an input to the hardware (source image or metadata). + * Elsewhere it means an output from the hardware. + */ +enum pispbe_node_ids { + MAIN_INPUT_NODE, + TDN_INPUT_NODE, + STITCH_INPUT_NODE, + OUTPUT0_NODE, + OUTPUT1_NODE, + TDN_OUTPUT_NODE, + STITCH_OUTPUT_NODE, + CONFIG_NODE, + PISPBE_NUM_NODES +}; + +struct pispbe_node_description { + const char *ent_name; + enum v4l2_buf_type buf_type; + unsigned int caps; +}; + +static const struct pispbe_node_description node_desc[PISPBE_NUM_NODES] = { + /* MAIN_INPUT_NODE */ + { + .ent_name = PISPBE_NAME "-input", + .buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE, + .caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE, + }, + /* TDN_INPUT_NODE */ + { + .ent_name = PISPBE_NAME "-tdn_input", + .buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE, + .caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE, + }, + /* STITCH_INPUT_NODE */ + { + .ent_name = PISPBE_NAME "-stitch_input", + .buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE, + .caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE, + }, + /* OUTPUT0_NODE */ + { + .ent_name = PISPBE_NAME "-output0", + .buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, + .caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE, + }, + /* OUTPUT1_NODE */ + { + .ent_name = PISPBE_NAME "-output1", + .buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, + .caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE, + }, + /* TDN_OUTPUT_NODE */ + { + .ent_name = PISPBE_NAME "-tdn_output", + .buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, + .caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE, + }, + /* STITCH_OUTPUT_NODE */ + { + .ent_name = PISPBE_NAME "-stitch_output", + .buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, + .caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE, + }, + /* CONFIG_NODE */ + { + .ent_name = PISPBE_NAME "-config", + .buf_type = V4L2_BUF_TYPE_META_OUTPUT, + .caps = V4L2_CAP_META_OUTPUT, + } +}; + +#define NODE_DESC_IS_OUTPUT(desc) ( \ + ((desc)->buf_type == V4L2_BUF_TYPE_META_OUTPUT) || \ + ((desc)->buf_type == V4L2_BUF_TYPE_VIDEO_OUTPUT) || \ + ((desc)->buf_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) + +#define NODE_IS_META(node) ( \ + ((node)->buf_type == V4L2_BUF_TYPE_META_OUTPUT)) +#define NODE_IS_OUTPUT(node) ( \ + ((node)->buf_type == V4L2_BUF_TYPE_META_OUTPUT) || \ + ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_OUTPUT) || \ + ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) +#define NODE_IS_CAPTURE(node) ( \ + ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) || \ + ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) +#define NODE_IS_MPLANE(node) ( \ + ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) || \ + ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) + +/* + * Structure to describe a single node /dev/video which represents a single + * input or output queue to the PiSP Back End device. + */ +struct pispbe_node { + unsigned int id; + int vfl_dir; + enum v4l2_buf_type buf_type; + struct video_device vfd; + struct media_pad pad; + struct media_intf_devnode *intf_devnode; + struct media_link *intf_link; + struct pispbe_dev *pispbe; + /* Video device lock */ + struct mutex node_lock; + /* vb2_queue lock */ + struct mutex queue_lock; + /* Protect pispbe_node->ready_queue and pispbe_buffer->ready_list */ + spinlock_t ready_lock; + struct list_head ready_queue; + struct vb2_queue queue; + struct v4l2_format format; + const struct pisp_be_format *pisp_format; +}; + +/* For logging only, use the entity name with "pispbe" and separator removed */ +#define NODE_NAME(node) \ + (node_desc[(node)->id].ent_name + sizeof(PISPBE_NAME)) + +/* Records details of the jobs currently running or queued on the h/w. */ +struct pispbe_job { + bool valid; + /* + * An array of buffer pointers - remember it's source buffers first, + * then captures, then metadata last. + */ + struct pispbe_buffer *buf[PISPBE_NUM_NODES]; +}; + +struct pispbe_hw_enables { + u32 bayer_enables; + u32 rgb_enables; +}; + +/* Records a job configuration and memory addresses. */ +struct pispbe_job_descriptor { + dma_addr_t hw_dma_addrs[N_HW_ADDRESSES]; + struct pisp_be_tiles_config *config; + struct pispbe_hw_enables hw_enables; + dma_addr_t tiles; +}; + +/* + * Structure representing the entire PiSP Back End device, comprising several + * nodes which share platform resources and a mutex for the actual HW. + */ +struct pispbe_dev { + struct device *dev; + struct pispbe_dev *pispbe; + struct pisp_be_tiles_config *config; + void __iomem *be_reg_base; + struct clk *clk; + struct v4l2_device v4l2_dev; + struct v4l2_subdev sd; + struct media_device mdev; + struct media_pad pad[PISPBE_NUM_NODES]; /* output pads first */ + struct pispbe_node node[PISPBE_NUM_NODES]; + dma_addr_t config_dma_addr; + unsigned int sequence; + u32 streaming_map; + struct pispbe_job queued_job, running_job; + spinlock_t hw_lock; /* protects "hw_busy" flag and streaming_map */ + bool hw_busy; /* non-zero if a job is queued or is being started */ + int irq; + u32 hw_version; + u8 done, started; +}; + +static u32 pispbe_rd(struct pispbe_dev *pispbe, unsigned int offset) +{ + return readl(pispbe->be_reg_base + offset); +} + +static void pispbe_wr(struct pispbe_dev *pispbe, unsigned int offset, u32 val) +{ + writel(val, pispbe->be_reg_base + offset); +} + +/* + * Queue a job to the h/w. If the h/w is idle it will begin immediately. + * Caller must ensure it is "safe to queue", i.e. we don't already have a + * queued, unstarted job. + */ +static void pispbe_queue_job(struct pispbe_dev *pispbe, + struct pispbe_job_descriptor *job) +{ + unsigned int begin, end; + + if (pispbe_rd(pispbe, PISP_BE_STATUS_REG) & PISP_BE_STATUS_QUEUED) + dev_err(pispbe->dev, "ERROR: not safe to queue new job!\n"); + + /* + * Write configuration to hardware. DMA addresses and enable flags + * are passed separately, because the driver needs to sanitize them, + * and we don't want to modify (or be vulnerable to modifications of) + * the mmap'd buffer. + */ + for (unsigned int u = 0; u < N_HW_ADDRESSES; ++u) { + pispbe_wr(pispbe, PISP_BE_IO_ADDR_LOW(u), + lower_32_bits(job->hw_dma_addrs[u])); + pispbe_wr(pispbe, PISP_BE_IO_ADDR_HIGH(u), + upper_32_bits(job->hw_dma_addrs[u])); + } + pispbe_wr(pispbe, PISP_BE_GLOBAL_BAYER_ENABLE, + job->hw_enables.bayer_enables); + pispbe_wr(pispbe, PISP_BE_GLOBAL_RGB_ENABLE, + job->hw_enables.rgb_enables); + + /* Everything else is as supplied by the user. */ + begin = offsetof(struct pisp_be_config, global.bayer_order) / + sizeof(u32); + end = sizeof(struct pisp_be_config) / sizeof(u32); + for (unsigned int u = begin; u < end; u++) + pispbe_wr(pispbe, PISP_BE_CONFIG_BASE_REG + sizeof(u32) * u, + ((u32 *)job->config)[u]); + + /* Read back the addresses -- an error here could be fatal */ + for (unsigned int u = 0; u < N_HW_ADDRESSES; ++u) { + unsigned int offset = PISP_BE_IO_ADDR_LOW(u); + u64 along = pispbe_rd(pispbe, offset); + + along += ((u64)pispbe_rd(pispbe, offset + 4)) << 32; + if (along != (u64)(job->hw_dma_addrs[u])) { + dev_dbg(pispbe->dev, + "ISP BE config error: check if ISP RAMs enabled?\n"); + return; + } + } + + /* + * Write tile pointer to hardware. The IOMMU should prevent + * out-of-bounds offsets reaching non-ISP buffers. + */ + pispbe_wr(pispbe, PISP_BE_TILE_ADDR_LO_REG, lower_32_bits(job->tiles)); + pispbe_wr(pispbe, PISP_BE_TILE_ADDR_HI_REG, upper_32_bits(job->tiles)); + + /* Enqueue the job */ + pispbe_wr(pispbe, PISP_BE_CONTROL_REG, + PISP_BE_CONTROL_COPY_CONFIG | PISP_BE_CONTROL_QUEUE_JOB | + PISP_BE_CONTROL_NUM_TILES(job->config->num_tiles)); +} + +struct pispbe_buffer { + struct vb2_v4l2_buffer vb; + struct list_head ready_list; + unsigned int config_index; +}; + +static int pispbe_get_planes_addr(dma_addr_t addr[3], struct pispbe_buffer *buf, + struct pispbe_node *node) +{ + unsigned int num_planes = node->format.fmt.pix_mp.num_planes; + unsigned int plane_factor = 0; + unsigned int size; + unsigned int p; + + if (!buf || !node->pisp_format) + return 0; + + /* + * Determine the base plane size. This will not be the same + * as node->format.fmt.pix_mp.plane_fmt[0].sizeimage for a single + * plane buffer in an mplane format. + */ + size = node->format.fmt.pix_mp.plane_fmt[0].bytesperline * + node->format.fmt.pix_mp.height; + + for (p = 0; p < num_planes && p < PISPBE_MAX_PLANES; p++) { + addr[p] = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, p); + plane_factor += node->pisp_format->plane_factor[p]; + } + + for (; p < PISPBE_MAX_PLANES && node->pisp_format->plane_factor[p]; p++) { + /* + * Calculate the address offset of this plane as needed + * by the hardware. This is specifically for non-mplane + * buffer formats, where there are 3 image planes, e.g. + * for the V4L2_PIX_FMT_YUV420 format. + */ + addr[p] = addr[0] + ((size * plane_factor) >> 3); + plane_factor += node->pisp_format->plane_factor[p]; + } + + return num_planes; +} + +static dma_addr_t pispbe_get_addr(struct pispbe_buffer *buf) +{ + if (buf) + return vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0); + + return 0; +} + +static void pispbe_xlate_addrs(struct pispbe_dev *pispbe, + struct pispbe_job_descriptor *job, + struct pispbe_buffer *buf[PISPBE_NUM_NODES]) +{ + struct pispbe_hw_enables *hw_en = &job->hw_enables; + struct pisp_be_tiles_config *config = job->config; + dma_addr_t *addrs = job->hw_dma_addrs; + int ret; + + /* Take a copy of the "enable" bitmaps so we can modify them. */ + hw_en->bayer_enables = config->config.global.bayer_enables; + hw_en->rgb_enables = config->config.global.rgb_enables; + + /* + * Main input first. There are 3 address pointers, corresponding to up + * to 3 planes. + */ + ret = pispbe_get_planes_addr(addrs, buf[MAIN_INPUT_NODE], + &pispbe->node[MAIN_INPUT_NODE]); + if (ret <= 0) { + /* + * This shouldn't happen; pispbe_schedule_internal should insist + * on an input. + */ + dev_warn(pispbe->dev, "ISP-BE missing input\n"); + hw_en->bayer_enables = 0; + hw_en->rgb_enables = 0; + return; + } + + /* + * Now TDN/Stitch inputs and outputs. These are single-plane and only + * used with Bayer input. Input enables must match the requirements + * of the processing stages, otherwise the hardware can lock up! + */ + if (hw_en->bayer_enables & PISP_BE_BAYER_ENABLE_INPUT) { + addrs[3] = pispbe_get_addr(buf[TDN_INPUT_NODE]); + if (addrs[3] == 0 || + !(hw_en->bayer_enables & PISP_BE_BAYER_ENABLE_TDN_INPUT) || + !(hw_en->bayer_enables & PISP_BE_BAYER_ENABLE_TDN) || + (config->config.tdn.reset & 1)) { + hw_en->bayer_enables &= + ~(PISP_BE_BAYER_ENABLE_TDN_INPUT | + PISP_BE_BAYER_ENABLE_TDN_DECOMPRESS); + if (!(config->config.tdn.reset & 1)) + hw_en->bayer_enables &= + ~PISP_BE_BAYER_ENABLE_TDN; + } + + addrs[4] = pispbe_get_addr(buf[STITCH_INPUT_NODE]); + if (addrs[4] == 0 || + !(hw_en->bayer_enables & PISP_BE_BAYER_ENABLE_STITCH_INPUT) || + !(hw_en->bayer_enables & PISP_BE_BAYER_ENABLE_STITCH)) { + hw_en->bayer_enables &= + ~(PISP_BE_BAYER_ENABLE_STITCH_INPUT | + PISP_BE_BAYER_ENABLE_STITCH_DECOMPRESS | + PISP_BE_BAYER_ENABLE_STITCH); + } + + addrs[5] = pispbe_get_addr(buf[TDN_OUTPUT_NODE]); + if (addrs[5] == 0) + hw_en->bayer_enables &= + ~(PISP_BE_BAYER_ENABLE_TDN_COMPRESS | + PISP_BE_BAYER_ENABLE_TDN_OUTPUT); + + addrs[6] = pispbe_get_addr(buf[STITCH_OUTPUT_NODE]); + if (addrs[6] == 0) + hw_en->bayer_enables &= + ~(PISP_BE_BAYER_ENABLE_STITCH_COMPRESS | + PISP_BE_BAYER_ENABLE_STITCH_OUTPUT); + } else { + /* No Bayer input? Disable entire Bayer pipe (else lockup) */ + hw_en->bayer_enables = 0; + } + + /* Main image output channels. */ + for (unsigned int i = 0; i < PISP_BACK_END_NUM_OUTPUTS; i++) { + ret = pispbe_get_planes_addr(addrs + 7 + 3 * i, + buf[OUTPUT0_NODE + i], + &pispbe->node[OUTPUT0_NODE + i]); + if (ret <= 0) + hw_en->rgb_enables &= ~(PISP_BE_RGB_ENABLE_OUTPUT0 << i); + } +} + +/* + * Prepare a job description to be submitted to the HW. + * + * To schedule a job, we need all streaming nodes (apart from Output0, + * Output1, Tdn and Stitch) to have a buffer ready, which must + * include at least a config buffer and a main input image. + * + * For Output0, Output1, Tdn and Stitch, a buffer only needs to be + * available if the blocks are enabled in the config. + * + * Needs to be called with hw_lock held. + * + * Returns 0 if a job has been successfully prepared, < 0 otherwise. + */ +static int pispbe_prepare_job(struct pispbe_dev *pispbe, + struct pispbe_job_descriptor *job) +{ + struct pispbe_buffer *buf[PISPBE_NUM_NODES] = {}; + unsigned int config_index; + struct pispbe_node *node; + unsigned long flags; + + lockdep_assert_held(&pispbe->hw_lock); + + memset(job, 0, sizeof(struct pispbe_job_descriptor)); + + if (((BIT(CONFIG_NODE) | BIT(MAIN_INPUT_NODE)) & + pispbe->streaming_map) != + (BIT(CONFIG_NODE) | BIT(MAIN_INPUT_NODE))) + return -ENODEV; + + node = &pispbe->node[CONFIG_NODE]; + spin_lock_irqsave(&node->ready_lock, flags); + buf[CONFIG_NODE] = list_first_entry_or_null(&node->ready_queue, + struct pispbe_buffer, + ready_list); + if (buf[CONFIG_NODE]) { + list_del(&buf[CONFIG_NODE]->ready_list); + pispbe->queued_job.buf[CONFIG_NODE] = buf[CONFIG_NODE]; + } + spin_unlock_irqrestore(&node->ready_lock, flags); + + /* Exit early if no config buffer has been queued. */ + if (!buf[CONFIG_NODE]) + return -ENODEV; + + config_index = buf[CONFIG_NODE]->vb.vb2_buf.index; + job->config = &pispbe->config[config_index]; + job->tiles = pispbe->config_dma_addr + + config_index * sizeof(struct pisp_be_tiles_config) + + offsetof(struct pisp_be_tiles_config, tiles); + + /* remember: srcimages, captures then metadata */ + for (unsigned int i = 0; i < PISPBE_NUM_NODES; i++) { + unsigned int bayer_en = + job->config->config.global.bayer_enables; + unsigned int rgb_en = + job->config->config.global.rgb_enables; + bool ignore_buffers = false; + + /* Config node is handled outside the loop above. */ + if (i == CONFIG_NODE) + continue; + + buf[i] = NULL; + if (!(pispbe->streaming_map & BIT(i))) + continue; + + if ((!(rgb_en & PISP_BE_RGB_ENABLE_OUTPUT0) && + i == OUTPUT0_NODE) || + (!(rgb_en & PISP_BE_RGB_ENABLE_OUTPUT1) && + i == OUTPUT1_NODE) || + (!(bayer_en & PISP_BE_BAYER_ENABLE_TDN_INPUT) && + i == TDN_INPUT_NODE) || + (!(bayer_en & PISP_BE_BAYER_ENABLE_TDN_OUTPUT) && + i == TDN_OUTPUT_NODE) || + (!(bayer_en & PISP_BE_BAYER_ENABLE_STITCH_INPUT) && + i == STITCH_INPUT_NODE) || + (!(bayer_en & PISP_BE_BAYER_ENABLE_STITCH_OUTPUT) && + i == STITCH_OUTPUT_NODE)) { + /* + * Ignore Output0/Output1/Tdn/Stitch buffer check if the + * global enables aren't set for these blocks. If a + * buffer has been provided, we dequeue it back to the + * user with the other in-use buffers. + */ + ignore_buffers = true; + } + + node = &pispbe->node[i]; + + /* Pull a buffer from each V4L2 queue to form the queued job */ + spin_lock_irqsave(&node->ready_lock, flags); + buf[i] = list_first_entry_or_null(&node->ready_queue, + struct pispbe_buffer, + ready_list); + if (buf[i]) { + list_del(&buf[i]->ready_list); + pispbe->queued_job.buf[i] = buf[i]; + } + spin_unlock_irqrestore(&node->ready_lock, flags); + + if (!buf[i] && !ignore_buffers) + goto err_return_buffers; + } + + pispbe->queued_job.valid = true; + + /* Convert buffers to DMA addresses for the hardware */ + pispbe_xlate_addrs(pispbe, job, buf); + + return 0; + +err_return_buffers: + for (unsigned int i = 0; i < PISPBE_NUM_NODES; i++) { + struct pispbe_node *n = &pispbe->node[i]; + + if (!buf[i]) + continue; + + /* Return the buffer to the ready_list queue */ + spin_lock_irqsave(&n->ready_lock, flags); + list_add(&buf[i]->ready_list, &n->ready_queue); + spin_unlock_irqrestore(&n->ready_lock, flags); + } + + memset(&pispbe->queued_job, 0, sizeof(pispbe->queued_job)); + + return -ENODEV; +} + +static void pispbe_schedule(struct pispbe_dev *pispbe, bool clear_hw_busy) +{ + struct pispbe_job_descriptor job; + unsigned long flags; + int ret; + + spin_lock_irqsave(&pispbe->hw_lock, flags); + + if (clear_hw_busy) + pispbe->hw_busy = false; + + if (pispbe->hw_busy) + goto unlock_and_return; + + ret = pispbe_prepare_job(pispbe, &job); + if (ret) + goto unlock_and_return; + + /* + * We can kick the job off without the hw_lock, as this can + * never run again until hw_busy is cleared, which will happen + * only when the following job has been queued and an interrupt + * is rised. + */ + pispbe->hw_busy = true; + spin_unlock_irqrestore(&pispbe->hw_lock, flags); + + if (job.config->num_tiles <= 0 || + job.config->num_tiles > PISP_BACK_END_NUM_TILES || + !((job.hw_enables.bayer_enables | job.hw_enables.rgb_enables) & + PISP_BE_BAYER_ENABLE_INPUT)) { + /* + * Bad job. We can't let it proceed as it could lock up + * the hardware, or worse! + * + * For now, just force num_tiles to 0, which causes the + * H/W to do something bizarre but survivable. It + * increments (started,done) counters by more than 1, + * but we seem to survive... + */ + dev_dbg(pispbe->dev, "Bad job: invalid number of tiles: %d\n", + job.config->num_tiles); + job.config->num_tiles = 0; + } + + pispbe_queue_job(pispbe, &job); + + return; + +unlock_and_return: + /* No job has been queued, just release the lock and return. */ + spin_unlock_irqrestore(&pispbe->hw_lock, flags); +} + +static void pispbe_isr_jobdone(struct pispbe_dev *pispbe, + struct pispbe_job *job) +{ + struct pispbe_buffer **buf = job->buf; + u64 ts = ktime_get_ns(); + + for (unsigned int i = 0; i < PISPBE_NUM_NODES; i++) { + if (buf[i]) { + buf[i]->vb.vb2_buf.timestamp = ts; + buf[i]->vb.sequence = pispbe->sequence; + vb2_buffer_done(&buf[i]->vb.vb2_buf, + VB2_BUF_STATE_DONE); + } + } + + pispbe->sequence++; +} + +static irqreturn_t pispbe_isr(int irq, void *dev) +{ + struct pispbe_dev *pispbe = (struct pispbe_dev *)dev; + bool can_queue_another = false; + u8 started, done; + u32 u; + + u = pispbe_rd(pispbe, PISP_BE_INTERRUPT_STATUS_REG); + if (u == 0) + return IRQ_NONE; + + pispbe_wr(pispbe, PISP_BE_INTERRUPT_STATUS_REG, u); + u = pispbe_rd(pispbe, PISP_BE_BATCH_STATUS_REG); + done = (uint8_t)u; + started = (uint8_t)(u >> 8); + + /* + * Be aware that done can go up by 2 and started by 1 when: a job that + * we previously saw "start" now finishes, and we then queued a new job + * which we see both start and finish "simultaneously". + */ + if (pispbe->running_job.valid && pispbe->done != done) { + pispbe_isr_jobdone(pispbe, &pispbe->running_job); + memset(&pispbe->running_job, 0, sizeof(pispbe->running_job)); + pispbe->done++; + } + + if (pispbe->started != started) { + pispbe->started++; + can_queue_another = 1; + + if (pispbe->done != done && pispbe->queued_job.valid) { + pispbe_isr_jobdone(pispbe, &pispbe->queued_job); + pispbe->done++; + } else { + pispbe->running_job = pispbe->queued_job; + } + + memset(&pispbe->queued_job, 0, sizeof(pispbe->queued_job)); + } + + if (pispbe->done != done || pispbe->started != started) { + dev_dbg(pispbe->dev, + "Job counters not matching: done = %u, expected %u - started = %u, expected %u\n", + pispbe->done, done, pispbe->started, started); + pispbe->started = started; + pispbe->done = done; + } + + /* check if there's more to do before going to sleep */ + pispbe_schedule(pispbe, can_queue_another); + + return IRQ_HANDLED; +} + +static int pisp_be_validate_config(struct pispbe_dev *pispbe, + struct pisp_be_tiles_config *config) +{ + u32 bayer_enables = config->config.global.bayer_enables; + u32 rgb_enables = config->config.global.rgb_enables; + struct device *dev = pispbe->dev; + struct v4l2_format *fmt; + unsigned int bpl, size; + + if (!(bayer_enables & PISP_BE_BAYER_ENABLE_INPUT) == + !(rgb_enables & PISP_BE_RGB_ENABLE_INPUT)) { + dev_dbg(dev, "%s: Not one input enabled\n", __func__); + return -EIO; + } + + /* Ensure output config strides and buffer sizes match the V4L2 formats. */ + fmt = &pispbe->node[TDN_OUTPUT_NODE].format; + if (bayer_enables & PISP_BE_BAYER_ENABLE_TDN_OUTPUT) { + bpl = config->config.tdn_output_format.stride; + size = bpl * config->config.tdn_output_format.height; + + if (fmt->fmt.pix_mp.plane_fmt[0].bytesperline < bpl) { + dev_dbg(dev, "%s: bpl mismatch on tdn_output\n", + __func__); + return -EINVAL; + } + + if (fmt->fmt.pix_mp.plane_fmt[0].sizeimage < size) { + dev_dbg(dev, "%s: size mismatch on tdn_output\n", + __func__); + return -EINVAL; + } + } + + fmt = &pispbe->node[STITCH_OUTPUT_NODE].format; + if (bayer_enables & PISP_BE_BAYER_ENABLE_STITCH_OUTPUT) { + bpl = config->config.stitch_output_format.stride; + size = bpl * config->config.stitch_output_format.height; + + if (fmt->fmt.pix_mp.plane_fmt[0].bytesperline < bpl) { + dev_dbg(dev, "%s: bpl mismatch on stitch_output\n", + __func__); + return -EINVAL; + } + + if (fmt->fmt.pix_mp.plane_fmt[0].sizeimage < size) { + dev_dbg(dev, "%s: size mismatch on stitch_output\n", + __func__); + return -EINVAL; + } + } + + for (unsigned int j = 0; j < PISP_BACK_END_NUM_OUTPUTS; j++) { + if (!(rgb_enables & PISP_BE_RGB_ENABLE_OUTPUT(j))) + continue; + + if (config->config.output_format[j].image.format & + PISP_IMAGE_FORMAT_WALLPAPER_ROLL) + continue; /* TODO: Size checks for wallpaper formats */ + + fmt = &pispbe->node[OUTPUT0_NODE + j].format; + for (unsigned int i = 0; i < fmt->fmt.pix_mp.num_planes; i++) { + bpl = !i ? config->config.output_format[j].image.stride + : config->config.output_format[j].image.stride2; + size = bpl * config->config.output_format[j].image.height; + + if (config->config.output_format[j].image.format & + PISP_IMAGE_FORMAT_SAMPLING_420) + size >>= 1; + + if (fmt->fmt.pix_mp.plane_fmt[i].bytesperline < bpl) { + dev_dbg(dev, "%s: bpl mismatch on output %d\n", + __func__, j); + return -EINVAL; + } + + if (fmt->fmt.pix_mp.plane_fmt[i].sizeimage < size) { + dev_dbg(dev, "%s: size mismatch on output\n", + __func__); + return -EINVAL; + } + } + } + + return 0; +} + +static int pispbe_node_queue_setup(struct vb2_queue *q, unsigned int *nbuffers, + unsigned int *nplanes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct pispbe_node *node = vb2_get_drv_priv(q); + struct pispbe_dev *pispbe = node->pispbe; + + *nplanes = 1; + if (NODE_IS_MPLANE(node)) { + *nplanes = node->format.fmt.pix_mp.num_planes; + for (unsigned int i = 0; i < *nplanes; i++) { + unsigned int size = + node->format.fmt.pix_mp.plane_fmt[i].sizeimage; + + if (sizes[i] && sizes[i] < size) { + dev_dbg(pispbe->dev, "%s: size %u < %u\n", + __func__, sizes[i], size); + return -EINVAL; + } + sizes[i] = size; + } + } else if (NODE_IS_META(node)) { + sizes[0] = node->format.fmt.meta.buffersize; + /* + * Limit the config node buffer count to the number of internal + * buffers allocated. + */ + if (node->id == CONFIG_NODE) + *nbuffers = min_t(unsigned int, *nbuffers, + PISP_BE_NUM_CONFIG_BUFFERS); + } + + dev_dbg(pispbe->dev, + "Image (or metadata) size %u, nbuffers %u for node %s\n", + sizes[0], *nbuffers, NODE_NAME(node)); + + return 0; +} + +static int pispbe_node_buffer_prepare(struct vb2_buffer *vb) +{ + struct pispbe_node *node = vb2_get_drv_priv(vb->vb2_queue); + struct pispbe_dev *pispbe = node->pispbe; + unsigned int num_planes = NODE_IS_MPLANE(node) ? + node->format.fmt.pix_mp.num_planes : 1; + + for (unsigned int i = 0; i < num_planes; i++) { + unsigned long size = NODE_IS_MPLANE(node) ? + node->format.fmt.pix_mp.plane_fmt[i].sizeimage : + node->format.fmt.meta.buffersize; + + if (vb2_plane_size(vb, i) < size) { + dev_dbg(pispbe->dev, + "data will not fit into plane %d (%lu < %lu)\n", + i, vb2_plane_size(vb, i), size); + return -EINVAL; + } + + vb2_set_plane_payload(vb, i, size); + } + + if (node->id == CONFIG_NODE) { + void *dst = &node->pispbe->config[vb->index]; + void *src = vb2_plane_vaddr(vb, 0); + + memcpy(dst, src, sizeof(struct pisp_be_tiles_config)); + + return pisp_be_validate_config(pispbe, dst); + } + + return 0; +} + +static void pispbe_node_buffer_queue(struct vb2_buffer *buf) +{ + struct vb2_v4l2_buffer *vbuf = + container_of(buf, struct vb2_v4l2_buffer, vb2_buf); + struct pispbe_buffer *buffer = + container_of(vbuf, struct pispbe_buffer, vb); + struct pispbe_node *node = vb2_get_drv_priv(buf->vb2_queue); + struct pispbe_dev *pispbe = node->pispbe; + unsigned long flags; + + dev_dbg(pispbe->dev, "%s: for node %s\n", __func__, NODE_NAME(node)); + spin_lock_irqsave(&node->ready_lock, flags); + list_add_tail(&buffer->ready_list, &node->ready_queue); + spin_unlock_irqrestore(&node->ready_lock, flags); + + /* + * Every time we add a buffer, check if there's now some work for the hw + * to do. + */ + pispbe_schedule(pispbe, false); +} + +static int pispbe_node_start_streaming(struct vb2_queue *q, unsigned int count) +{ + struct pispbe_node *node = vb2_get_drv_priv(q); + struct pispbe_dev *pispbe = node->pispbe; + unsigned long flags; + int ret; + + ret = pm_runtime_resume_and_get(pispbe->dev); + if (ret < 0) + return ret; + + spin_lock_irqsave(&pispbe->hw_lock, flags); + node->pispbe->streaming_map |= BIT(node->id); + node->pispbe->sequence = 0; + spin_unlock_irqrestore(&pispbe->hw_lock, flags); + + dev_dbg(pispbe->dev, "%s: for node %s (count %u)\n", + __func__, NODE_NAME(node), count); + dev_dbg(pispbe->dev, "Nodes streaming now 0x%x\n", + node->pispbe->streaming_map); + + /* Maybe we're ready to run. */ + pispbe_schedule(pispbe, false); + + return 0; +} + +static void pispbe_node_stop_streaming(struct vb2_queue *q) +{ + struct pispbe_node *node = vb2_get_drv_priv(q); + struct pispbe_dev *pispbe = node->pispbe; + struct pispbe_buffer *buf; + unsigned long flags; + + /* + * Now this is a bit awkward. In a simple M2M device we could just wait + * for all queued jobs to complete, but here there's a risk that a + * partial set of buffers was queued and cannot be run. For now, just + * cancel all buffers stuck in the "ready queue", then wait for any + * running job. + * + * This may return buffers out of order. + */ + dev_dbg(pispbe->dev, "%s: for node %s\n", __func__, NODE_NAME(node)); + spin_lock_irqsave(&pispbe->hw_lock, flags); + do { + unsigned long flags1; + + spin_lock_irqsave(&node->ready_lock, flags1); + buf = list_first_entry_or_null(&node->ready_queue, + struct pispbe_buffer, + ready_list); + if (buf) { + list_del(&buf->ready_list); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } + spin_unlock_irqrestore(&node->ready_lock, flags1); + } while (buf); + spin_unlock_irqrestore(&pispbe->hw_lock, flags); + + vb2_wait_for_all_buffers(&node->queue); + + spin_lock_irqsave(&pispbe->hw_lock, flags); + pispbe->streaming_map &= ~BIT(node->id); + spin_unlock_irqrestore(&pispbe->hw_lock, flags); + + pm_runtime_mark_last_busy(pispbe->dev); + pm_runtime_put_autosuspend(pispbe->dev); + + dev_dbg(pispbe->dev, "Nodes streaming now 0x%x\n", + pispbe->streaming_map); +} + +static const struct vb2_ops pispbe_node_queue_ops = { + .queue_setup = pispbe_node_queue_setup, + .buf_prepare = pispbe_node_buffer_prepare, + .buf_queue = pispbe_node_buffer_queue, + .start_streaming = pispbe_node_start_streaming, + .stop_streaming = pispbe_node_stop_streaming, +}; + +static const struct v4l2_file_operations pispbe_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .poll = vb2_fop_poll, + .unlocked_ioctl = video_ioctl2, + .mmap = vb2_fop_mmap +}; + +static int pispbe_node_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + + strscpy(cap->driver, PISPBE_NAME, sizeof(cap->driver)); + strscpy(cap->card, PISPBE_NAME, sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", + dev_name(pispbe->dev)); + + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE_MPLANE | + V4L2_CAP_VIDEO_OUTPUT_MPLANE | + V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS | + V4L2_CAP_META_OUTPUT; + cap->device_caps = node->vfd.device_caps; + + dev_dbg(pispbe->dev, "Caps for node %s: %x and %x (dev %x)\n", + NODE_NAME(node), cap->capabilities, cap->device_caps, + node->vfd.device_caps); + + return 0; +} + +static int pispbe_node_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + + if (!NODE_IS_CAPTURE(node) || NODE_IS_META(node)) { + dev_dbg(pispbe->dev, + "Cannot get capture fmt for output node %s\n", + NODE_NAME(node)); + return -EINVAL; + } + + *f = node->format; + dev_dbg(pispbe->dev, "Get capture format for node %s\n", + NODE_NAME(node)); + + return 0; +} + +static int pispbe_node_g_fmt_vid_out(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + + if (NODE_IS_CAPTURE(node) || NODE_IS_META(node)) { + dev_dbg(pispbe->dev, + "Cannot get capture fmt for output node %s\n", + NODE_NAME(node)); + return -EINVAL; + } + + *f = node->format; + dev_dbg(pispbe->dev, "Get output format for node %s\n", + NODE_NAME(node)); + + return 0; +} + +static int pispbe_node_g_fmt_meta_out(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + + if (!NODE_IS_META(node) || NODE_IS_CAPTURE(node)) { + dev_dbg(pispbe->dev, + "Cannot get capture fmt for meta output node %s\n", + NODE_NAME(node)); + return -EINVAL; + } + + *f = node->format; + dev_dbg(pispbe->dev, "Get output format for meta node %s\n", + NODE_NAME(node)); + + return 0; +} + +static const struct pisp_be_format *pispbe_find_fmt(unsigned int fourcc) +{ + for (unsigned int i = 0; i < ARRAY_SIZE(supported_formats); i++) { + if (supported_formats[i].fourcc == fourcc) + return &supported_formats[i]; + } + + return NULL; +} + +static void pispbe_set_plane_params(struct v4l2_format *f, + const struct pisp_be_format *fmt) +{ + unsigned int nplanes = f->fmt.pix_mp.num_planes; + unsigned int total_plane_factor = 0; + + for (unsigned int i = 0; i < PISPBE_MAX_PLANES; i++) + total_plane_factor += fmt->plane_factor[i]; + + for (unsigned int i = 0; i < nplanes; i++) { + struct v4l2_plane_pix_format *p = &f->fmt.pix_mp.plane_fmt[i]; + unsigned int bpl, plane_size; + + bpl = (f->fmt.pix_mp.width * fmt->bit_depth) >> 3; + bpl = ALIGN(max(p->bytesperline, bpl), fmt->align); + + plane_size = bpl * f->fmt.pix_mp.height * + (nplanes > 1 ? fmt->plane_factor[i] : total_plane_factor); + /* + * The shift is to divide out the plane_factor fixed point + * scaling of 8. + */ + plane_size = max(p->sizeimage, plane_size >> 3); + + p->bytesperline = bpl; + p->sizeimage = plane_size; + } +} + +static void pispbe_try_format(struct v4l2_format *f, struct pispbe_node *node) +{ + struct pispbe_dev *pispbe = node->pispbe; + u32 pixfmt = f->fmt.pix_mp.pixelformat; + const struct pisp_be_format *fmt; + bool is_rgb; + + dev_dbg(pispbe->dev, + "%s: [%s] req %ux%u %p4cc, planes %d\n", + __func__, NODE_NAME(node), f->fmt.pix_mp.width, + f->fmt.pix_mp.height, &pixfmt, + f->fmt.pix_mp.num_planes); + + fmt = pispbe_find_fmt(pixfmt); + if (!fmt) { + dev_dbg(pispbe->dev, + "%s: [%s] Format not found, defaulting to YUV420\n", + __func__, NODE_NAME(node)); + fmt = pispbe_find_fmt(V4L2_PIX_FMT_YUV420); + } + + f->fmt.pix_mp.pixelformat = fmt->fourcc; + f->fmt.pix_mp.num_planes = fmt->num_planes; + f->fmt.pix_mp.field = V4L2_FIELD_NONE; + f->fmt.pix_mp.width = max(min(f->fmt.pix_mp.width, 65536u), + PISP_BACK_END_MIN_TILE_WIDTH); + f->fmt.pix_mp.height = max(min(f->fmt.pix_mp.height, 65536u), + PISP_BACK_END_MIN_TILE_HEIGHT); + + /* + * Fill in the actual colour space when the requested one was + * not supported. This also catches the case when the "default" + * colour space was requested (as that's never in the mask). + */ + if (!(V4L2_COLORSPACE_MASK(f->fmt.pix_mp.colorspace) & + fmt->colorspace_mask)) + f->fmt.pix_mp.colorspace = fmt->colorspace_default; + + /* In all cases, we only support the defaults for these: */ + f->fmt.pix_mp.ycbcr_enc = + V4L2_MAP_YCBCR_ENC_DEFAULT(f->fmt.pix_mp.colorspace); + f->fmt.pix_mp.xfer_func = + V4L2_MAP_XFER_FUNC_DEFAULT(f->fmt.pix_mp.colorspace); + + is_rgb = f->fmt.pix_mp.colorspace == V4L2_COLORSPACE_SRGB; + f->fmt.pix_mp.quantization = + V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb, f->fmt.pix_mp.colorspace, + f->fmt.pix_mp.ycbcr_enc); + + /* Set plane size and bytes/line for each plane. */ + pispbe_set_plane_params(f, fmt); + + for (unsigned int i = 0; i < f->fmt.pix_mp.num_planes; i++) { + dev_dbg(pispbe->dev, + "%s: [%s] calc plane %d, %ux%u, depth %u, bpl %u size %u\n", + __func__, NODE_NAME(node), i, f->fmt.pix_mp.width, + f->fmt.pix_mp.height, fmt->bit_depth, + f->fmt.pix_mp.plane_fmt[i].bytesperline, + f->fmt.pix_mp.plane_fmt[i].sizeimage); + } +} + +static int pispbe_node_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + + if (!NODE_IS_CAPTURE(node) || NODE_IS_META(node)) { + dev_dbg(pispbe->dev, + "Cannot set capture fmt for output node %s\n", + NODE_NAME(node)); + return -EINVAL; + } + + pispbe_try_format(f, node); + + return 0; +} + +static int pispbe_node_try_fmt_vid_out(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + + if (!NODE_IS_OUTPUT(node) || NODE_IS_META(node)) { + dev_dbg(pispbe->dev, + "Cannot set capture fmt for output node %s\n", + NODE_NAME(node)); + return -EINVAL; + } + + pispbe_try_format(f, node); + + return 0; +} + +static int pispbe_node_try_fmt_meta_out(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + + if (!NODE_IS_META(node) || NODE_IS_CAPTURE(node)) { + dev_dbg(pispbe->dev, + "Cannot set capture fmt for meta output node %s\n", + NODE_NAME(node)); + return -EINVAL; + } + + f->fmt.meta.dataformat = V4L2_META_FMT_RPI_BE_CFG; + f->fmt.meta.buffersize = sizeof(struct pisp_be_tiles_config); + + return 0; +} + +static int pispbe_node_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + int ret; + + ret = pispbe_node_try_fmt_vid_cap(file, priv, f); + if (ret < 0) + return ret; + + node->format = *f; + node->pisp_format = pispbe_find_fmt(f->fmt.pix_mp.pixelformat); + + dev_dbg(pispbe->dev, "Set capture format for node %s to %p4cc\n", + NODE_NAME(node), &f->fmt.pix_mp.pixelformat); + + return 0; +} + +static int pispbe_node_s_fmt_vid_out(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + int ret; + + ret = pispbe_node_try_fmt_vid_out(file, priv, f); + if (ret < 0) + return ret; + + node->format = *f; + node->pisp_format = pispbe_find_fmt(f->fmt.pix_mp.pixelformat); + + dev_dbg(pispbe->dev, "Set output format for node %s to %p4cc\n", + NODE_NAME(node), &f->fmt.pix_mp.pixelformat); + + return 0; +} + +static int pispbe_node_s_fmt_meta_out(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + int ret; + + ret = pispbe_node_try_fmt_meta_out(file, priv, f); + if (ret < 0) + return ret; + + node->format = *f; + node->pisp_format = &meta_out_supported_formats[0]; + + dev_dbg(pispbe->dev, "Set output format for meta node %s to %p4cc\n", + NODE_NAME(node), &f->fmt.meta.dataformat); + + return 0; +} + +static int pispbe_node_enum_fmt(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct pispbe_node *node = video_drvdata(file); + + if (f->type != node->queue.type) + return -EINVAL; + + if (NODE_IS_META(node)) { + if (f->index) + return -EINVAL; + + f->pixelformat = V4L2_META_FMT_RPI_BE_CFG; + f->flags = 0; + return 0; + } + + if (f->index >= ARRAY_SIZE(supported_formats)) + return -EINVAL; + + f->pixelformat = supported_formats[f->index].fourcc; + f->flags = 0; + + return 0; +} + +static int pispbe_enum_framesizes(struct file *file, void *priv, + struct v4l2_frmsizeenum *fsize) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + + if (NODE_IS_META(node) || fsize->index) + return -EINVAL; + + if (!pispbe_find_fmt(fsize->pixel_format)) { + dev_dbg(pispbe->dev, "Invalid pixel code: %x\n", + fsize->pixel_format); + return -EINVAL; + } + + fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; + fsize->stepwise.min_width = 32; + fsize->stepwise.max_width = 65535; + fsize->stepwise.step_width = 2; + + fsize->stepwise.min_height = 32; + fsize->stepwise.max_height = 65535; + fsize->stepwise.step_height = 2; + + return 0; +} + +static int pispbe_node_streamon(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + struct pispbe_node *node = video_drvdata(file); + struct pispbe_dev *pispbe = node->pispbe; + + dev_dbg(pispbe->dev, "Stream on for node %s\n", NODE_NAME(node)); + + INIT_LIST_HEAD(&node->ready_queue); + + return vb2_streamon(&node->queue, type); +} + +static int pispbe_node_streamoff(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + struct pispbe_node *node = video_drvdata(file); + + return vb2_streamoff(&node->queue, type); +} + +static const struct v4l2_ioctl_ops pispbe_node_ioctl_ops = { + .vidioc_querycap = pispbe_node_querycap, + .vidioc_g_fmt_vid_cap_mplane = pispbe_node_g_fmt_vid_cap, + .vidioc_g_fmt_vid_out_mplane = pispbe_node_g_fmt_vid_out, + .vidioc_g_fmt_meta_out = pispbe_node_g_fmt_meta_out, + .vidioc_try_fmt_vid_cap_mplane = pispbe_node_try_fmt_vid_cap, + .vidioc_try_fmt_vid_out_mplane = pispbe_node_try_fmt_vid_out, + .vidioc_try_fmt_meta_out = pispbe_node_try_fmt_meta_out, + .vidioc_s_fmt_vid_cap_mplane = pispbe_node_s_fmt_vid_cap, + .vidioc_s_fmt_vid_out_mplane = pispbe_node_s_fmt_vid_out, + .vidioc_s_fmt_meta_out = pispbe_node_s_fmt_meta_out, + .vidioc_enum_fmt_vid_cap = pispbe_node_enum_fmt, + .vidioc_enum_fmt_vid_out = pispbe_node_enum_fmt, + .vidioc_enum_fmt_meta_out = pispbe_node_enum_fmt, + .vidioc_enum_framesizes = pispbe_enum_framesizes, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_streamon = pispbe_node_streamon, + .vidioc_streamoff = pispbe_node_streamoff, +}; + +static const struct video_device pispbe_videodev = { + .name = PISPBE_NAME, + .vfl_dir = VFL_DIR_M2M, /* gets overwritten */ + .fops = &pispbe_fops, + .ioctl_ops = &pispbe_node_ioctl_ops, + .minor = -1, + .release = video_device_release_empty, +}; + +static void pispbe_node_def_fmt(struct pispbe_node *node) +{ + if (NODE_IS_META(node) && NODE_IS_OUTPUT(node)) { + /* Config node */ + struct v4l2_format *f = &node->format; + + f->fmt.meta.dataformat = V4L2_META_FMT_RPI_BE_CFG; + f->fmt.meta.buffersize = sizeof(struct pisp_be_tiles_config); + f->type = node->buf_type; + } else { + struct v4l2_format f = { + .fmt.pix_mp.pixelformat = V4L2_PIX_FMT_YUV420, + .fmt.pix_mp.width = 1920, + .fmt.pix_mp.height = 1080, + .type = node->buf_type, + }; + pispbe_try_format(&f, node); + node->format = f; + } + + node->pisp_format = pispbe_find_fmt(node->format.fmt.pix_mp.pixelformat); +} + +/* + * Initialise a struct pispbe_node and register it as /dev/video + * to represent one of the PiSP Back End's input or output streams. + */ +static int pispbe_init_node(struct pispbe_dev *pispbe, unsigned int id) +{ + bool output = NODE_DESC_IS_OUTPUT(&node_desc[id]); + struct pispbe_node *node = &pispbe->node[id]; + struct media_entity *entity = &node->vfd.entity; + struct video_device *vdev = &node->vfd; + struct vb2_queue *q = &node->queue; + int ret; + + node->id = id; + node->pispbe = pispbe; + node->buf_type = node_desc[id].buf_type; + + mutex_init(&node->node_lock); + mutex_init(&node->queue_lock); + INIT_LIST_HEAD(&node->ready_queue); + spin_lock_init(&node->ready_lock); + + node->format.type = node->buf_type; + pispbe_node_def_fmt(node); + + q->type = node->buf_type; + q->io_modes = VB2_MMAP | VB2_DMABUF; + q->mem_ops = &vb2_dma_contig_memops; + q->drv_priv = node; + q->ops = &pispbe_node_queue_ops; + q->buf_struct_size = sizeof(struct pispbe_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->dev = pispbe->dev; + /* get V4L2 to handle node->queue locking */ + q->lock = &node->queue_lock; + + ret = vb2_queue_init(q); + if (ret < 0) { + dev_err(pispbe->dev, "vb2_queue_init failed\n"); + goto err_mutex_destroy; + } + + *vdev = pispbe_videodev; /* default initialization */ + strscpy(vdev->name, node_desc[id].ent_name, sizeof(vdev->name)); + vdev->v4l2_dev = &pispbe->v4l2_dev; + vdev->vfl_dir = output ? VFL_DIR_TX : VFL_DIR_RX; + /* get V4L2 to serialise our ioctls */ + vdev->lock = &node->node_lock; + vdev->queue = &node->queue; + vdev->device_caps = V4L2_CAP_STREAMING | node_desc[id].caps; + + node->pad.flags = output ? MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK; + ret = media_entity_pads_init(entity, 1, &node->pad); + if (ret) { + dev_err(pispbe->dev, + "Failed to register media pads for %s device node\n", + NODE_NAME(node)); + goto err_unregister_queue; + } + + ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); + if (ret) { + dev_err(pispbe->dev, + "Failed to register video %s device node\n", + NODE_NAME(node)); + goto err_unregister_queue; + } + video_set_drvdata(vdev, node); + + if (output) + ret = media_create_pad_link(entity, 0, &pispbe->sd.entity, + id, MEDIA_LNK_FL_IMMUTABLE | + MEDIA_LNK_FL_ENABLED); + else + ret = media_create_pad_link(&pispbe->sd.entity, id, entity, + 0, MEDIA_LNK_FL_IMMUTABLE | + MEDIA_LNK_FL_ENABLED); + if (ret) + goto err_unregister_video_dev; + + dev_dbg(pispbe->dev, "%s device node registered as /dev/video%d\n", + NODE_NAME(node), node->vfd.num); + + return 0; + +err_unregister_video_dev: + video_unregister_device(&node->vfd); +err_unregister_queue: + vb2_queue_release(&node->queue); +err_mutex_destroy: + mutex_destroy(&node->node_lock); + mutex_destroy(&node->queue_lock); + return ret; +} + +static const struct v4l2_subdev_pad_ops pispbe_pad_ops = { + .link_validate = v4l2_subdev_link_validate_default, +}; + +static const struct v4l2_subdev_ops pispbe_sd_ops = { + .pad = &pispbe_pad_ops, +}; + +static int pispbe_init_subdev(struct pispbe_dev *pispbe) +{ + struct v4l2_subdev *sd = &pispbe->sd; + int ret; + + v4l2_subdev_init(sd, &pispbe_sd_ops); + sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER; + sd->owner = THIS_MODULE; + sd->dev = pispbe->dev; + strscpy(sd->name, PISPBE_NAME, sizeof(sd->name)); + + for (unsigned int i = 0; i < PISPBE_NUM_NODES; i++) + pispbe->pad[i].flags = + NODE_DESC_IS_OUTPUT(&node_desc[i]) ? + MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE; + + ret = media_entity_pads_init(&sd->entity, PISPBE_NUM_NODES, + pispbe->pad); + if (ret) + goto error; + + ret = v4l2_device_register_subdev(&pispbe->v4l2_dev, sd); + if (ret) + goto error; + + return 0; + +error: + media_entity_cleanup(&sd->entity); + return ret; +} + +static int pispbe_init_devices(struct pispbe_dev *pispbe) +{ + struct v4l2_device *v4l2_dev; + struct media_device *mdev; + unsigned int num_regist; + int ret; + + /* Register v4l2_device and media_device */ + mdev = &pispbe->mdev; + mdev->hw_revision = pispbe->hw_version; + mdev->dev = pispbe->dev; + strscpy(mdev->model, PISPBE_NAME, sizeof(mdev->model)); + media_device_init(mdev); + + v4l2_dev = &pispbe->v4l2_dev; + v4l2_dev->mdev = &pispbe->mdev; + strscpy(v4l2_dev->name, PISPBE_NAME, sizeof(v4l2_dev->name)); + + ret = v4l2_device_register(pispbe->dev, v4l2_dev); + if (ret) + goto err_media_dev_cleanup; + + /* Register the PISPBE subdevice. */ + ret = pispbe_init_subdev(pispbe); + if (ret) + goto err_unregister_v4l2; + + /* Create device video nodes */ + for (num_regist = 0; num_regist < PISPBE_NUM_NODES; num_regist++) { + ret = pispbe_init_node(pispbe, num_regist); + if (ret) + goto err_unregister_nodes; + } + + ret = media_device_register(mdev); + if (ret) + goto err_unregister_nodes; + + pispbe->config = + dma_alloc_coherent(pispbe->dev, + sizeof(struct pisp_be_tiles_config) * + PISP_BE_NUM_CONFIG_BUFFERS, + &pispbe->config_dma_addr, GFP_KERNEL); + if (!pispbe->config) { + dev_err(pispbe->dev, "Unable to allocate cached config buffers.\n"); + ret = -ENOMEM; + goto err_unregister_mdev; + } + + return 0; + +err_unregister_mdev: + media_device_unregister(mdev); +err_unregister_nodes: + while (num_regist-- > 0) { + video_unregister_device(&pispbe->node[num_regist].vfd); + vb2_queue_release(&pispbe->node[num_regist].queue); + } + v4l2_device_unregister_subdev(&pispbe->sd); + media_entity_cleanup(&pispbe->sd.entity); +err_unregister_v4l2: + v4l2_device_unregister(v4l2_dev); +err_media_dev_cleanup: + media_device_cleanup(mdev); + return ret; +} + +static void pispbe_destroy_devices(struct pispbe_dev *pispbe) +{ + if (pispbe->config) { + dma_free_coherent(pispbe->dev, + sizeof(struct pisp_be_tiles_config) * + PISP_BE_NUM_CONFIG_BUFFERS, + pispbe->config, + pispbe->config_dma_addr); + } + + dev_dbg(pispbe->dev, "Unregister from media controller\n"); + + v4l2_device_unregister_subdev(&pispbe->sd); + media_entity_cleanup(&pispbe->sd.entity); + media_device_unregister(&pispbe->mdev); + + for (int i = PISPBE_NUM_NODES - 1; i >= 0; i--) { + video_unregister_device(&pispbe->node[i].vfd); + vb2_queue_release(&pispbe->node[i].queue); + mutex_destroy(&pispbe->node[i].node_lock); + mutex_destroy(&pispbe->node[i].queue_lock); + } + + media_device_cleanup(&pispbe->mdev); + v4l2_device_unregister(&pispbe->v4l2_dev); +} + +static int pispbe_runtime_suspend(struct device *dev) +{ + struct pispbe_dev *pispbe = dev_get_drvdata(dev); + + clk_disable_unprepare(pispbe->clk); + + return 0; +} + +static int pispbe_runtime_resume(struct device *dev) +{ + struct pispbe_dev *pispbe = dev_get_drvdata(dev); + int ret; + + ret = clk_prepare_enable(pispbe->clk); + if (ret) { + dev_err(dev, "Unable to enable clock\n"); + return ret; + } + + dev_dbg(dev, "%s: Enabled clock, rate=%lu\n", + __func__, clk_get_rate(pispbe->clk)); + + return 0; +} + +static int pispbe_hw_init(struct pispbe_dev *pispbe) +{ + u32 u; + + /* Check the HW is present and has a known version */ + u = pispbe_rd(pispbe, PISP_BE_VERSION_REG); + dev_dbg(pispbe->dev, "pispbe_probe: HW version: 0x%08x", u); + pispbe->hw_version = u; + if ((u & ~PISP_BE_VERSION_MINOR_BITS) != PISP_BE_VERSION_2712) + return -ENODEV; + + /* Clear leftover interrupts */ + pispbe_wr(pispbe, PISP_BE_INTERRUPT_STATUS_REG, 0xFFFFFFFFu); + u = pispbe_rd(pispbe, PISP_BE_BATCH_STATUS_REG); + dev_dbg(pispbe->dev, "pispbe_probe: BatchStatus: 0x%08x", u); + + pispbe->done = (uint8_t)u; + pispbe->started = (uint8_t)(u >> 8); + u = pispbe_rd(pispbe, PISP_BE_STATUS_REG); + dev_dbg(pispbe->dev, "pispbe_probe: Status: 0x%08x", u); + + if (u != 0 || pispbe->done != pispbe->started) { + dev_err(pispbe->dev, "pispbe_probe: HW is stuck or busy\n"); + return -EBUSY; + } + + /* + * AXI QOS=0, CACHE=4'b0010, PROT=3'b011 + * Also set "chicken bits" 22:20 which enable sub-64-byte bursts + * and AXI AWID/BID variability (on versions which support this). + */ + pispbe_wr(pispbe, PISP_BE_AXI_REG, 0x32703200u); + + /* Enable both interrupt flags */ + pispbe_wr(pispbe, PISP_BE_INTERRUPT_EN_REG, 0x00000003u); + + return 0; +} + +/* Probe the ISP-BE hardware block, as a single platform device. */ +static int pispbe_probe(struct platform_device *pdev) +{ + struct pispbe_dev *pispbe; + int ret; + + pispbe = devm_kzalloc(&pdev->dev, sizeof(*pispbe), GFP_KERNEL); + if (!pispbe) + return -ENOMEM; + + dev_set_drvdata(&pdev->dev, pispbe); + pispbe->dev = &pdev->dev; + platform_set_drvdata(pdev, pispbe); + + pispbe->be_reg_base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(pispbe->be_reg_base)) { + dev_err(&pdev->dev, "Failed to get ISP-BE registers address\n"); + return PTR_ERR(pispbe->be_reg_base); + } + + pispbe->irq = platform_get_irq(pdev, 0); + if (pispbe->irq <= 0) { + dev_err(&pdev->dev, "No IRQ resource\n"); + return -EINVAL; + } + + ret = devm_request_irq(&pdev->dev, pispbe->irq, pispbe_isr, 0, + PISPBE_NAME, pispbe); + if (ret) { + dev_err(&pdev->dev, "Unable to request interrupt\n"); + return ret; + } + + ret = dma_set_mask_and_coherent(pispbe->dev, DMA_BIT_MASK(36)); + if (ret) + return ret; + + pispbe->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(pispbe->clk)) + return dev_err_probe(&pdev->dev, PTR_ERR(pispbe->clk), + "Failed to get clock"); + + /* Hardware initialisation */ + pm_runtime_set_autosuspend_delay(pispbe->dev, 200); + pm_runtime_use_autosuspend(pispbe->dev); + pm_runtime_enable(pispbe->dev); + + ret = pispbe_runtime_resume(pispbe->dev); + if (ret) + goto pm_runtime_disable_err; + + pispbe->hw_busy = false; + spin_lock_init(&pispbe->hw_lock); + ret = pispbe_hw_init(pispbe); + if (ret) + goto pm_runtime_suspend_err; + + ret = pispbe_init_devices(pispbe); + if (ret) + goto disable_devs_err; + + pm_runtime_mark_last_busy(pispbe->dev); + pm_runtime_put_autosuspend(pispbe->dev); + + return 0; + +disable_devs_err: + pispbe_destroy_devices(pispbe); +pm_runtime_suspend_err: + pispbe_runtime_suspend(pispbe->dev); +pm_runtime_disable_err: + pm_runtime_dont_use_autosuspend(pispbe->dev); + pm_runtime_disable(pispbe->dev); + + return ret; +} + +static int pispbe_remove(struct platform_device *pdev) +{ + struct pispbe_dev *pispbe = platform_get_drvdata(pdev); + + pispbe_destroy_devices(pispbe); + + pispbe_runtime_suspend(pispbe->dev); + pm_runtime_dont_use_autosuspend(pispbe->dev); + pm_runtime_disable(pispbe->dev); + + return 0; +} + +static const struct dev_pm_ops pispbe_pm_ops = { + SET_RUNTIME_PM_OPS(pispbe_runtime_suspend, pispbe_runtime_resume, NULL) +}; + +static const struct of_device_id pispbe_of_match[] = { + { + .compatible = "raspberrypi,pispbe", + }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, pispbe_of_match); + +static struct platform_driver pispbe_pdrv = { + .probe = pispbe_probe, + .remove = pispbe_remove, + .driver = { + .name = PISPBE_NAME, + .of_match_table = pispbe_of_match, + .pm = &pispbe_pm_ops, + }, +}; + +module_platform_driver(pispbe_pdrv); + +MODULE_DESCRIPTION("PiSP Back End driver"); +MODULE_AUTHOR("David Plowman "); +MODULE_AUTHOR("Nick Hollinghurst "); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/platform/raspberrypi/pisp_be/pisp_be_formats.h b/drivers/media/platform/raspberrypi/pisp_be/pisp_be_formats.h new file mode 100644 index 000000000000..b5cb7b8c7531 --- /dev/null +++ b/drivers/media/platform/raspberrypi/pisp_be/pisp_be_formats.h @@ -0,0 +1,519 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * PiSP Back End driver image format definitions. + * + * Copyright (c) 2021-2024 Raspberry Pi Ltd + */ + +#ifndef _PISP_BE_FORMATS_ +#define _PISP_BE_FORMATS_ + +#include +#include + +#define PISPBE_MAX_PLANES 3 +#define P3(x) ((x) * 8) + +struct pisp_be_format { + unsigned int fourcc; + unsigned int align; + unsigned int bit_depth; + /* 0P3 factor for plane sizing */ + unsigned int plane_factor[PISPBE_MAX_PLANES]; + unsigned int num_planes; + unsigned int colorspace_mask; + enum v4l2_colorspace colorspace_default; +}; + +#define V4L2_COLORSPACE_MASK(colorspace) BIT(colorspace) + +#define V4L2_COLORSPACE_MASK_JPEG \ + V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_JPEG) +#define V4L2_COLORSPACE_MASK_SMPTE170M \ + V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_SMPTE170M) +#define V4L2_COLORSPACE_MASK_REC709 \ + V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_REC709) +#define V4L2_COLORSPACE_MASK_SRGB \ + V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_SRGB) +#define V4L2_COLORSPACE_MASK_RAW \ + V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_RAW) + +/* + * All three colour spaces SRGB, SMPTE170M and REC709 are fundamentally sRGB + * underneath (as near as makes no difference to us), just with different YCbCr + * encodings. Therefore the ISP can generate sRGB on its main output and any of + * the others on its low resolution output. Applications should, when using both + * outputs, program the colour spaces on them to be the same, matching whatever + * is requested for the low resolution output, even if the main output is + * producing an RGB format. In turn this requires us to allow all these colour + * spaces for every YUV/RGB output format. + */ +#define V4L2_COLORSPACE_MASK_ALL_SRGB (V4L2_COLORSPACE_MASK_JPEG | \ + V4L2_COLORSPACE_MASK_SRGB | \ + V4L2_COLORSPACE_MASK_SMPTE170M | \ + V4L2_COLORSPACE_MASK_REC709) + +static const struct pisp_be_format supported_formats[] = { + /* Single plane YUV formats */ + { + .fourcc = V4L2_PIX_FMT_YUV420, + /* 128 alignment to ensure U/V planes are 64 byte aligned. */ + .align = 128, + .bit_depth = 8, + .plane_factor = { P3(1), P3(0.25), P3(0.25) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_YVU420, + /* 128 alignment to ensure U/V planes are 64 byte aligned. */ + .align = 128, + .bit_depth = 8, + .plane_factor = { P3(1), P3(0.25), P3(0.25) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_NV12, + .align = 32, + .bit_depth = 8, + .plane_factor = { P3(1), P3(0.5) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_NV21, + .align = 32, + .bit_depth = 8, + .plane_factor = { P3(1), P3(0.5) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_YUYV, + .align = 64, + .bit_depth = 16, + .plane_factor = { P3(1) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_UYVY, + .align = 64, + .bit_depth = 16, + .plane_factor = { P3(1) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_YVYU, + .align = 64, + .bit_depth = 16, + .plane_factor = { P3(1) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_VYUY, + .align = 64, + .bit_depth = 16, + .plane_factor = { P3(1) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + /* Multiplane YUV formats */ + { + .fourcc = V4L2_PIX_FMT_YUV420M, + .align = 64, + .bit_depth = 8, + .plane_factor = { P3(1), P3(0.25), P3(0.25) }, + .num_planes = 3, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_NV12M, + .align = 32, + .bit_depth = 8, + .plane_factor = { P3(1), P3(0.5) }, + .num_planes = 2, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_NV21M, + .align = 32, + .bit_depth = 8, + .plane_factor = { P3(1), P3(0.5) }, + .num_planes = 2, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_YVU420M, + .align = 64, + .bit_depth = 8, + .plane_factor = { P3(1), P3(0.25), P3(0.25) }, + .num_planes = 3, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_YUV422M, + .align = 64, + .bit_depth = 8, + .plane_factor = { P3(1), P3(0.5), P3(0.5) }, + .num_planes = 3, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_YVU422M, + .align = 64, + .bit_depth = 8, + .plane_factor = { P3(1), P3(0.5), P3(0.5) }, + .num_planes = 3, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_YUV444M, + .align = 64, + .bit_depth = 8, + .plane_factor = { P3(1), P3(1), P3(1) }, + .num_planes = 3, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + { + .fourcc = V4L2_PIX_FMT_YVU444M, + .align = 64, + .bit_depth = 8, + .plane_factor = { P3(1), P3(1), P3(1) }, + .num_planes = 3, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SMPTE170M, + }, + /* RGB formats */ + { + .fourcc = V4L2_PIX_FMT_RGB24, + .align = 32, + .bit_depth = 24, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SRGB, + }, + { + .fourcc = V4L2_PIX_FMT_BGR24, + .align = 32, + .bit_depth = 24, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SRGB, + }, + { + .fourcc = V4L2_PIX_FMT_XBGR32, + .align = 64, + .bit_depth = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SRGB, + }, + { + .fourcc = V4L2_PIX_FMT_RGBX32, + .align = 64, + .bit_depth = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SRGB, + }, + { + .fourcc = V4L2_PIX_FMT_RGB48, + .align = 64, + .bit_depth = 48, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SRGB, + }, + { + .fourcc = V4L2_PIX_FMT_BGR48, + .align = 64, + .bit_depth = 48, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB, + .colorspace_default = V4L2_COLORSPACE_SRGB, + }, + /* Bayer formats - 8-bit */ + { + .fourcc = V4L2_PIX_FMT_SRGGB8, + .bit_depth = 8, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SBGGR8, + .bit_depth = 8, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SGRBG8, + .bit_depth = 8, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SGBRG8, + .bit_depth = 8, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + /* Bayer formats - 16-bit */ + { + .fourcc = V4L2_PIX_FMT_SRGGB16, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SBGGR16, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SGRBG16, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SGBRG16, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + /* Bayer formats unpacked to 16bpp */ + /* 10 bit */ + .fourcc = V4L2_PIX_FMT_SRGGB10, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SBGGR10, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SGRBG10, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SGBRG10, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + /* 12 bit */ + .fourcc = V4L2_PIX_FMT_SRGGB12, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SBGGR12, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SGRBG12, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SGBRG12, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + /* 14 bit */ + .fourcc = V4L2_PIX_FMT_SRGGB14, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SBGGR14, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SGRBG14, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_SGBRG14, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + /* Bayer formats - 16-bit PiSP Compressed */ + { + .fourcc = V4L2_PIX_FMT_PISP_COMP1_BGGR, + .bit_depth = 8, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_PISP_COMP1_RGGB, + .bit_depth = 8, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_PISP_COMP1_GRBG, + .bit_depth = 8, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_PISP_COMP1_GBRG, + .bit_depth = 8, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + /* Greyscale Formats */ + { + .fourcc = V4L2_PIX_FMT_GREY, + .bit_depth = 8, + .align = 32, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_Y16, + .bit_depth = 16, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, + { + .fourcc = V4L2_PIX_FMT_PISP_COMP1_MONO, + .bit_depth = 8, + .align = 32, + .plane_factor = { P3(1.0) }, + .num_planes = 1, + .colorspace_mask = V4L2_COLORSPACE_MASK_RAW, + .colorspace_default = V4L2_COLORSPACE_RAW, + }, +}; + +static const struct pisp_be_format meta_out_supported_formats[] = { + /* Configuration buffer format. */ + { + .fourcc = V4L2_META_FMT_RPI_BE_CFG, + }, +}; + +#endif /* _PISP_BE_FORMATS_ */ From patchwork Fri May 31 08:07:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13681300 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 8FC2C770EE for ; Fri, 31 May 2024 08:07:45 +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=1717142867; cv=none; b=ri20a5MtxRtGlHcfBHR44OgVSbEGjMXTD3S+Enaivam7NaBVEJJOHv8ILYWyDb5b2Hz5xnzIkvqU/r7Mdj1NWNr61sQGar7ltr9zyqfJCvMar0e2j7bu/iUqfznNby1I9//LHEUhHo9ununGmL+x4iHiFX5pQ+rWtPyHq0YswJ8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; 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git-send-email 2.45.1 In-Reply-To: <20240531080707.34568-1-jacopo.mondi@ideasonboard.com> References: <20240531080707.34568-1-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 documentation for the PiSP Back End memory-to-memory ISP. Signed-off-by: Jacopo Mondi --- .../admin-guide/media/raspberrypi-pisp-be.dot | 20 ++++ .../admin-guide/media/raspberrypi-pisp-be.rst | 109 ++++++++++++++++++ .../admin-guide/media/v4l-drivers.rst | 1 + 3 files changed, 130 insertions(+) create mode 100644 Documentation/admin-guide/media/raspberrypi-pisp-be.dot create mode 100644 Documentation/admin-guide/media/raspberrypi-pisp-be.rst diff --git a/Documentation/admin-guide/media/raspberrypi-pisp-be.dot b/Documentation/admin-guide/media/raspberrypi-pisp-be.dot new file mode 100644 index 000000000000..55671dc1d443 --- /dev/null +++ b/Documentation/admin-guide/media/raspberrypi-pisp-be.dot @@ -0,0 +1,20 @@ +digraph board { + rankdir=TB + n00000001 [label="{{ 0 | 1 | 2 | 7} | pispbe\n | { 3 | 4 | 5 | 6}}", shape=Mrecord, style=filled, fillcolor=green] + n00000001:port3 -> n0000001c [style=bold] + n00000001:port4 -> n00000022 [style=bold] + n00000001:port5 -> n00000028 [style=bold] + n00000001:port6 -> n0000002e [style=bold] + n0000000a [label="pispbe-input\n/dev/video0", shape=box, style=filled, fillcolor=yellow] + n0000000a -> n00000001:port0 [style=bold] + n00000010 [label="pispbe-tdn_input\n/dev/video1", shape=box, style=filled, fillcolor=yellow] + n00000010 -> n00000001:port1 [style=bold] + n00000016 [label="pispbe-stitch_input\n/dev/video2", shape=box, style=filled, fillcolor=yellow] + n00000016 -> n00000001:port2 [style=bold] + n0000001c [label="pispbe-output0\n/dev/video3", shape=box, style=filled, fillcolor=yellow] + n00000022 [label="pispbe-output1\n/dev/video4", shape=box, style=filled, fillcolor=yellow] + n00000028 [label="pispbe-tdn_output\n/dev/video5", shape=box, style=filled, fillcolor=yellow] + n0000002e [label="pispbe-stitch_output\n/dev/video6", shape=box, style=filled, fillcolor=yellow] + n00000034 [label="pispbe-config\n/dev/video7", shape=box, style=filled, fillcolor=yellow] + n00000034 -> n00000001:port7 [style=bold] +} diff --git a/Documentation/admin-guide/media/raspberrypi-pisp-be.rst b/Documentation/admin-guide/media/raspberrypi-pisp-be.rst new file mode 100644 index 000000000000..0fcf46f26276 --- /dev/null +++ b/Documentation/admin-guide/media/raspberrypi-pisp-be.rst @@ -0,0 +1,109 @@ +.. SPDX-License-Identifier: GPL-2.0 + +========================================================= +Raspberry Pi PiSP Back End Memory-to-Memory ISP (pisp-be) +========================================================= + +The PiSP Back End +================= + +The PiSP Back End is a memory-to-memory Image Signal Processor (ISP) which reads +image data from DRAM memory and performs image processing as specified by the +application through the parameters in a configuration buffer, before writing +pixel data back to memory through two distinct output channels. + +The ISP registers and programming model are documented in the `Raspberry Pi +Image Signal Processor (PiSP) Specification document`_ + +The PiSP Back End ISP processes images in tiles. The handling of image +tessellation and the computation of low-level configuration parameters is +realized by a free software library called `libpisp +`_. + +The full image processing pipeline, which involves capturing RAW Bayer data from +an image sensor through a MIPI CSI-2 compatible capture interface, storing them +in DRAM memory and processing them in the PiSP Back End to obtain images usable +by an application is implemented in `libcamera `_ as +part of the Raspberry Pi platform support. + +The pisp-be driver +================== + +The Raspberry Pi PiSP Back End (pisp-be) driver is located under +drivers/media/platform/raspberrypi/pisp-be. It uses the `V4L2 API` to register +a number of video capture and output devices, the `V4L2 subdev API` to register +a subdevice for the ISP that connects the video devices in a single media graph +realized using the `Media Controller (MC) API`. + +The media topology registered by the `pisp-be` driver is represented below: + +.. _pips-be-topology: + +.. kernel-figure:: raspberrypi-pisp-be.dot + :alt: Diagram of the default media pipeline topology + :align: center + + +The media graph registers the following video device nodes: + +- pispbe-input: output device for images to be submitted to the ISP for + processing. +- pispbe-tdn_input: output device for temporal denoise. +- pispbe-stitch_input: output device for image stitching (HDR). +- pispbe-output0: first capture device for processed images. +- pispbe-output1: second capture device for processed images. +- pispbe-tdn_output: capture device for temporal denoise. +- pispbe-stitch_output: capture device for image stitching (HDR). +- pispbe-config: output device for ISP configuration parameters. + +pispbe-input +------------ + +Images to be processed by the ISP are queued to the `pispbe-input` output device +node. For a list of image formats supported as input to the ISP refer to the +`Raspberry Pi Image Signal Processor (PiSP) Specification document`_. + +pispbe-tdn_input, pispbe-tdn_output +----------------------------------- + +The `pispbe-tdn_input` output video device receives images to be processed by +the temporal denoise block which are captured from the `pispbe-tdn_output` +capture video device. Userspace is responsible for maintaining queues on both +devices, and ensuring that buffers completed on the output are queued to the +input. + +pispbe-stitch_input, pispbe-stitch_output +----------------------------------------- + +To realize HDR (high dynamic range) image processing the image stitching and +tonemapping blocks are used. The `pispbe-stitch_output` writes images to memory +and the `pispbe-stitch_input` receives the previously written frame to process +it along with the current input image. Userspace is responsible for maintaining +queues on both devices, and ensuring that buffers completed on the output are +queued to the input. + +pispbe-output0, pispbe-output1 +------------------------------ + +The two capture devices write to memory the pixel data as processed by the ISP. + +pispbe-config +------------- + +The `pispbe-config` output video devices receives a buffer of configuration +parameters that define the desired image processing to be performed by the ISP. + +The format of the ISP configuration parameter is defined by +:c:type:`pisp_be_tiles_config` C structure and the meaning of each parameter is +described in the `Raspberry Pi Image Signal Processor (PiSP) Specification +document`_. + +ISP configuration +================= + +The ISP configuration is described solely by the content of the parameters +buffer. The only parameter that userspace needs to configure using the V4L2 API +is the image format on the output and capture video devices for validation of +the content of the parameters buffer. + +.. _Raspberry Pi Image Signal Processor (PiSP) Specification document: https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf diff --git a/Documentation/admin-guide/media/v4l-drivers.rst b/Documentation/admin-guide/media/v4l-drivers.rst index 4120eded9a13..b6af448b9fe9 100644 --- a/Documentation/admin-guide/media/v4l-drivers.rst +++ b/Documentation/admin-guide/media/v4l-drivers.rst @@ -23,6 +23,7 @@ Video4Linux (V4L) driver-specific documentation omap4_camera philips qcom_camss + raspberrypi-pisp-be rcar-fdp1 rkisp1 saa7134