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Message-ID: <20250617103201.1594152-1-niklas.soderlund+renesas@ragnatech.se>
Date: Tue, 17 Jun 2025 12:31:54 +0200
From: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
Jacopo Mondi <jacopo.mondi@...asonboard.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
linux-media@...r.kernel.org,
linux-renesas-soc@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
Subject: [PATCH 0/7] media: Add support for R-Car ISP using Dreamchip RPPX1 ISP
Hello,
This series adds support for two different devices that together enable
ISP support on Renesas R-Car Gen4 ISP processing. The first driver added
is for Dreamchip RPPX1 ISP, this device purely deals with image
processing algorithms, statistics and image conversion; but have no DMA
engines. The second driver is for the R-Car ISP CORE, this device
deals with DMA to/from the RPPX1 ISP and provides a V4L2 user-space
interface for the ISP.
The R-Car ISP driver uses the RPPX1 framework to drive the ISP and
together the two devices provide a functional ISP. For detailed
description of the RPPX1 see patch 1/7, and for details about the R-Car
ISP see commit message in patch 7/7.
The RPPX1 ISP is similar to functionality and design to the Rk1ISP
already supported upstream. For this reason this series reuses the pixel
format for ISP parameters (RK1E) and statistics (RK1S) as the user-space
ABI to configure the ISP. The primary difference to Rk1iSP is the over
all pipeline design and the register layout out is different enough to
make it impractical to bolt it on the existing drivers.
However on a functional block level the blocks amiable and their
register layout mapped to the buffer formats are similar enough to make
the reuse practical. Another difference is that RPPX1 operates at a
hight bitdepth then Rk1ISP, but this is easily supported by scaling the
values to/from the buffers.
All functional blocks present on the RPPX1 are not yet added to the
driver. Hence not all configuration blocks of the Rk1E extensible format
are supported, but most if not all can be added. Enough blocks are added
so a libcamera pipeline reusing the Rk1ISP IPA can be supported and
produce good images using the AWB and AE algorithms. A libcamera
pipeline for testing will is available.
Patch 1/7 adds the foundation for the RPPX1 framework. It deals with
probing all function blocks making sure every blocks version register is
supported and setup a "passthru" pipeline that just debayer RAW images.
Patch 2/7 to 6/7 adds the function blocks needed to support AWB and AE.
While finally patch 7/7 adds the R-Car ISP CORE DMA user of the
framework.
The work depends on Jacopo's excellent VSPX work,
[PATCH v13] media: vsp1: Add VSPX support
The sum of the work pass v4l2-compliance. A test suite for the enabled
function blocks exists and pass. The work have also been tested with
various libcamera utilities and compliance tests together with a IMX219
and IMX462 sensor on R-Car V4H.
Niklas Söderlund (7):
media: rppx1: Add framework to support Dreamchip RPPX1 ISP
media: rppx1: Add support for AWB measurement parameters and
statistics
media: rppx1: Add support for AWB gain settings
media: rppx1: Add support for Auto Exposure Measurement
media: rppx1: Add support for Histogram Measurement
media: rppx1: Add support for Black Level Subtraction
media: rcar-isp: Add support for ISPCORE
MAINTAINERS | 6 +
drivers/media/platform/Kconfig | 1 +
drivers/media/platform/Makefile | 1 +
drivers/media/platform/dreamchip/Kconfig | 3 +
drivers/media/platform/dreamchip/Makefile | 6 +
.../media/platform/dreamchip/rppx1/Kconfig | 11 +
.../media/platform/dreamchip/rppx1/Makefile | 33 +
.../platform/dreamchip/rppx1/rpp_module.c | 40 +
.../platform/dreamchip/rppx1/rpp_module.h | 157 +++
.../platform/dreamchip/rppx1/rpp_params.c | 56 +
.../platform/dreamchip/rppx1/rpp_stats.c | 30 +
.../media/platform/dreamchip/rppx1/rppx1.c | 337 ++++++
.../media/platform/dreamchip/rppx1/rppx1.h | 99 ++
.../platform/dreamchip/rppx1/rppx1_acq.c | 147 +++
.../platform/dreamchip/rppx1/rppx1_awbg.c | 67 ++
.../media/platform/dreamchip/rppx1/rppx1_bd.c | 52 +
.../platform/dreamchip/rppx1/rppx1_bdrgb.c | 80 ++
.../platform/dreamchip/rppx1/rppx1_bls.c | 175 +++
.../platform/dreamchip/rppx1/rppx1_cac.c | 29 +
.../platform/dreamchip/rppx1/rppx1_ccor.c | 106 ++
.../media/platform/dreamchip/rppx1/rppx1_db.c | 44 +
.../platform/dreamchip/rppx1/rppx1_dpcc.c | 76 ++
.../platform/dreamchip/rppx1/rppx1_exm.c | 140 +++
.../media/platform/dreamchip/rppx1/rppx1_ga.c | 49 +
.../platform/dreamchip/rppx1/rppx1_hist.c | 249 ++++
.../platform/dreamchip/rppx1/rppx1_hist256.c | 46 +
.../media/platform/dreamchip/rppx1/rppx1_is.c | 42 +
.../platform/dreamchip/rppx1/rppx1_lin.c | 60 +
.../platform/dreamchip/rppx1/rppx1_lsc.c | 68 ++
.../platform/dreamchip/rppx1/rppx1_ltm.c | 48 +
.../platform/dreamchip/rppx1/rppx1_ltmmeas.c | 41 +
.../platform/dreamchip/rppx1/rppx1_outif.c | 45 +
.../platform/dreamchip/rppx1/rppx1_outregs.c | 75 ++
.../platform/dreamchip/rppx1/rppx1_rmap.c | 64 +
.../platform/dreamchip/rppx1/rppx1_rmapmeas.c | 47 +
.../platform/dreamchip/rppx1/rppx1_shrp.c | 64 +
.../platform/dreamchip/rppx1/rppx1_wbmeas.c | 188 +++
.../platform/dreamchip/rppx1/rppx1_xyz2luv.c | 26 +
.../media/platform/renesas/rcar-isp/Kconfig | 1 +
.../media/platform/renesas/rcar-isp/Makefile | 2 +-
.../media/platform/renesas/rcar-isp/core-io.c | 1053 +++++++++++++++++
.../media/platform/renesas/rcar-isp/core.c | 790 +++++++++++++
.../media/platform/renesas/rcar-isp/csisp.c | 48 +-
.../platform/renesas/rcar-isp/risp-core.h | 163 +++
include/media/rppx1.h | 33 +
45 files changed, 4890 insertions(+), 8 deletions(-)
create mode 100644 drivers/media/platform/dreamchip/Kconfig
create mode 100644 drivers/media/platform/dreamchip/Makefile
create mode 100644 drivers/media/platform/dreamchip/rppx1/Kconfig
create mode 100644 drivers/media/platform/dreamchip/rppx1/Makefile
create mode 100644 drivers/media/platform/dreamchip/rppx1/rpp_module.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rpp_module.h
create mode 100644 drivers/media/platform/dreamchip/rppx1/rpp_params.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rpp_stats.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1.h
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_acq.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_awbg.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_bd.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_bdrgb.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_bls.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_cac.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_ccor.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_db.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_dpcc.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_exm.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_ga.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_hist.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_hist256.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_is.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_lin.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_lsc.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_ltm.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_ltmmeas.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_outif.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_outregs.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_rmap.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_rmapmeas.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_shrp.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_wbmeas.c
create mode 100644 drivers/media/platform/dreamchip/rppx1/rppx1_xyz2luv.c
create mode 100644 drivers/media/platform/renesas/rcar-isp/core-io.c
create mode 100644 drivers/media/platform/renesas/rcar-isp/core.c
create mode 100644 drivers/media/platform/renesas/rcar-isp/risp-core.h
create mode 100644 include/media/rppx1.h
--
2.49.0
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