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 2/14, and for details about the R-Car
ISP see commit message in patch 3/14.

All functional blocks present on the RPPX1 are not yet added to the
driver, but most are.

Patch 1/14 adds two new pixel formats, one for parameters and one for 
statistics.

Patch 2/14 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 3/14 integrates the adds the R-Car ISP CORE DMA parts and
integrates with the RPPX1 framework added in patch 1/14.

Patches 4/14 to 14/14 extends the RPPX1 framework with the logic to drive
the different IPS modules.

The sum of the work pass v4l2-compliance. A test suite for the enabled
function blocks exists and pass.

This series depends on the ISP extensible statistics definitions 
out-of-tree patches.

Biggest change since v7 is that a new pixel format dedicated for the 
RPPX1 have been created by Jai Luthra and Jacopo Mondi have reworked the 
statistics buffer for v4l2-isp extensible statistics blocks. Huge 
thanks!

I have taken that work in, reviewed and reworked parts of it. The 
biggest changes is a rework of naming of blocks and variables, as we are 
now free from the RkISP1 format proper names can be used to make it 
easier to map data structures to the datasheet. I also added a new BLS 
statistics block as well as updated support for the BD and DB blocks, 
which where incomplete.

Biggest change since v6 is that v4l2-isp framework is now used to verify
the formats. There are also various small fixes here and there, see
individual patches for detailed change log.

Jai Luthra (2):
  media: Add RPP_X1_PARAMS and RPP_X1_STATS meta formats
  media: rppx1: lin: Add support for gamma sensor linearization

Niklas Söderlund (12):
  media: rppx1: Add framework to support Dreamchip RPPX1 ISP
  media: rcar-isp: Add support for ISPCORE
  media: rppx1: wbmeas: Add support for white balance measurement
  media: rppx1: awbg: Add support for white balance gain settings
  media: rppx1: exm: Add support for exposure measurement
  media: rppx1: hist: Add support histogram measurement
  media: rppx1: bls: Add support for black level compensation
  media: rppx1: ccor: Add support for color correction matrix
  media: rppx1: lsc: Add support for lens shade correction
  media: rppx1: ga: Add support for gamma out correction
  media: rppx1: db: Add support for debayering filters
  media: rppx1: bd: Add support for bilateral denoising

 MAINTAINERS                                   |    7 +
 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    |   12 +
 .../media/platform/dreamchip/rppx1/Makefile   |   33 +
 .../platform/dreamchip/rppx1/rpp_module.c     |   40 +
 .../platform/dreamchip/rppx1/rpp_module.h     |  161 +++
 .../platform/dreamchip/rppx1/rpp_params.c     |  128 +++
 .../platform/dreamchip/rppx1/rpp_stats.c      |   73 ++
 .../media/platform/dreamchip/rppx1/rppx1.c    |  339 ++++++
 .../media/platform/dreamchip/rppx1/rppx1.h    |   99 ++
 .../platform/dreamchip/rppx1/rppx1_acq.c      |  147 +++
 .../platform/dreamchip/rppx1/rppx1_awbg.c     |   62 +
 .../media/platform/dreamchip/rppx1/rppx1_bd.c |  171 +++
 .../platform/dreamchip/rppx1/rppx1_bdrgb.c    |   80 ++
 .../platform/dreamchip/rppx1/rppx1_bls.c      |  180 +++
 .../platform/dreamchip/rppx1/rppx1_cac.c      |   29 +
 .../platform/dreamchip/rppx1/rppx1_ccor.c     |  167 +++
 .../media/platform/dreamchip/rppx1/rppx1_db.c |  126 ++
 .../platform/dreamchip/rppx1/rppx1_dpcc.c     |   76 ++
 .../platform/dreamchip/rppx1/rppx1_exm.c      |  127 ++
 .../media/platform/dreamchip/rppx1/rppx1_ga.c |   90 ++
 .../platform/dreamchip/rppx1/rppx1_hist.c     |  189 +++
 .../platform/dreamchip/rppx1/rppx1_hist256.c  |   46 +
 .../media/platform/dreamchip/rppx1/rppx1_is.c |   42 +
 .../platform/dreamchip/rppx1/rppx1_lin.c      |  113 ++
 .../platform/dreamchip/rppx1/rppx1_lsc.c      |  187 +++
 .../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   |  164 +++
 .../platform/dreamchip/rppx1/rppx1_xyz2luv.c  |   26 +
 .../media/platform/renesas/rcar-isp/Kconfig   |    2 +
 .../media/platform/renesas/rcar-isp/Makefile  |    2 +-
 .../media/platform/renesas/rcar-isp/core-io.c | 1017 +++++++++++++++++
 .../media/platform/renesas/rcar-isp/core.c    |  826 +++++++++++++
 .../media/platform/renesas/rcar-isp/csisp.c   |   48 +-
 .../platform/renesas/rcar-isp/risp-core.h     |  170 +++
 drivers/media/v4l2-core/v4l2-ioctl.c          |    2 +
 include/media/rppx1.h                         |   34 +
 .../uapi/linux/media/dreamchip/rppx1-config.h |  926 +++++++++++++++
 include/uapi/linux/videodev2.h                |    4 +
 48 files changed, 6332 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
 create mode 100644 include/uapi/linux/media/dreamchip/rppx1-config.h

-- 
2.54.0

Hi Niklas,

On Mon, 4 May 2026 at 03:08, Niklas Söderlund
<niklas.soderlund+renesas@ragnatech.se> wrote:
> 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.

Thanks for your series!

> This series depends on the ISP extensible statistics definitions
> out-of-tree patches.

So that is:
  1. "[PATCH v1 00/11] media: Add iMX95 neoisp driver"
     https://lore.kernel.org/20260413160331.2611829-1-antoine.bouyer@nxp.com/
     for v4l2_isp_block_header,
  2. Jacopo's reply https://lore.kernel.org/aeHd0G_JDaROMWDd@zed/
     for v4l2_isp_buffer_size.

However, that still leaves me with undefined struct v4l2_isp_block_type_info,
and lore couldn't help in locating the patch series that adds it :-(

Where can I find it? Thanks!

Gr{oetje,eeting}s,

                        Geert


--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Hi Geert,

On 2026-05-06 14:19:28 +0200, Geert Uytterhoeven wrote:
> Hi Niklas,
> 
> On Mon, 4 May 2026 at 03:08, Niklas Söderlund
> <niklas.soderlund+renesas@ragnatech.se> wrote:
> > 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.
> 
> Thanks for your series!
> 
> > This series depends on the ISP extensible statistics definitions
> > out-of-tree patches.
> 
> So that is:
>   1. "[PATCH v1 00/11] media: Add iMX95 neoisp driver"
>      https://lore.kernel.org/20260413160331.2611829-1-antoine.bouyer@nxp.com/
>      for v4l2_isp_block_header,
>   2. Jacopo's reply https://lore.kernel.org/aeHd0G_JDaROMWDd@zed/
>      for v4l2_isp_buffer_size.
> 
> However, that still leaves me with undefined struct v4l2_isp_block_type_info,
> and lore couldn't help in locating the patch series that adds it :-(

As Jacopo have kindly pointed out to me in private, this work was based 
on an early version of [2] that was not published, but as I found [1] I 
thought it was.

I will rebase this on [2] and address Jacopo's comments and repost.

> 
> Where can I find it? Thanks!
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds

-- 
Kind Regards,
Niklas Söderlund

Hello,

On Wed, May 06, 2026 at 02:29:54PM +0200, Niklas Söderlund wrote:
> Hi Geert,
>
> On 2026-05-06 14:19:28 +0200, Geert Uytterhoeven wrote:
> > Hi Niklas,
> >
> > On Mon, 4 May 2026 at 03:08, Niklas Söderlund
> > <niklas.soderlund+renesas@ragnatech.se> wrote:
> > > 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.
> >
> > Thanks for your series!
> >
> > > This series depends on the ISP extensible statistics definitions
> > > out-of-tree patches.
> >
> > So that is:
> >   1. "[PATCH v1 00/11] media: Add iMX95 neoisp driver"
> >      https://lore.kernel.org/20260413160331.2611829-1-antoine.bouyer@nxp.com/
> >      for v4l2_isp_block_header,
> >   2. Jacopo's reply https://lore.kernel.org/aeHd0G_JDaROMWDd@zed/
> >      for v4l2_isp_buffer_size.
> >
> > However, that still leaves me with undefined struct v4l2_isp_block_type_info,
> > and lore couldn't help in locating the patch series that adds it :-(

This version is based on a preliminary version of the extensible
statistics. I can provide you the patches in case you're interested.

>
> As Jacopo have kindly pointed out to me in private, this work was based
> on an early version of [2] that was not published, but as I found [1] I
> thought it was.
>
> I will rebase this on [2] and address Jacopo's comments and repost.

Don't :)

Please re-base on:
https://patchwork.linuxtv.org/project/linux-media/list/?series=24772
which I sent yesterday instead.

If you're using b4 you can simply point the pre-requisites to this

change-id: 20260504-extensible-stats-f2d6befcc1ce

Thanks
  j

>
> >
> > Where can I find it? Thanks!
> >
> > Gr{oetje,eeting}s,
> >
> >                         Geert
> >
> >
> > --
> > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
> >
> > In personal conversations with technical people, I call myself a hacker. But
> > when I'm talking to journalists I just say "programmer" or something like that.
> >                                 -- Linus Torvalds
>
> --
> Kind Regards,
> Niklas Söderlund

Hi Jacopo,

On Wed, 6 May 2026 at 14:49, Jacopo Mondi <jacopo.mondi@ideasonboard.com> wrote:
> On Wed, May 06, 2026 at 02:29:54PM +0200, Niklas Söderlund wrote:
> > On 2026-05-06 14:19:28 +0200, Geert Uytterhoeven wrote:
> > > On Mon, 4 May 2026 at 03:08, Niklas Söderlund
> > > <niklas.soderlund+renesas@ragnatech.se> wrote:
> > > > 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.
> > >
> > > Thanks for your series!
> > >
> > > > This series depends on the ISP extensible statistics definitions
> > > > out-of-tree patches.
> > >
> > > So that is:
> > >   1. "[PATCH v1 00/11] media: Add iMX95 neoisp driver"
> > >      https://lore.kernel.org/20260413160331.2611829-1-antoine.bouyer@nxp.com/
> > >      for v4l2_isp_block_header,
> > >   2. Jacopo's reply https://lore.kernel.org/aeHd0G_JDaROMWDd@zed/
> > >      for v4l2_isp_buffer_size.
> > >
> > > However, that still leaves me with undefined struct v4l2_isp_block_type_info,
> > > and lore couldn't help in locating the patch series that adds it :-(
>
> This version is based on a preliminary version of the extensible
> statistics. I can provide you the patches in case you're interested.
>
> >
> > As Jacopo have kindly pointed out to me in private, this work was based
> > on an early version of [2] that was not published, but as I found [1] I
> > thought it was.
> >
> > I will rebase this on [2] and address Jacopo's comments and repost.
>
> Don't :)
>
> Please re-base on:
> https://patchwork.linuxtv.org/project/linux-media/list/?series=24772
> which I sent yesterday instead.
>
> If you're using b4 you can simply point the pre-requisites to this
>
> change-id: 20260504-extensible-stats-f2d6befcc1ce

b4 am takes none of the above, but does take
https://lore.kernel.org/20260505-extensible-stats-v1-0-e16f326b8dad@ideasonboard.com/
:-)

OK, I'll disable the driver again in my .config, and will wait for
Niklas' rebase...

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds