linux-kernel - Re: [PATCH v3 0/4] Add Toshiba Visconti Video Input Interface driver

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Date:   Thu, 24 Nov 2022 11:53:55 +0100
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Yuji Ishikawa <yuji2.ishikawa@...hiba.co.jp>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>
Cc:     linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v3 0/4] Add Toshiba Visconti Video Input Interface driver

Hi Yuji,

On 10/08/2022 15:28, Yuji Ishikawa wrote:
> This series is the Video Input Interface driver
> for Toshiba's ARM SoC, Visconti[0].
> This provides DT binding documentation,
> device driver, documentation and MAINTAINER files.
> 
> A visconti VIIF driver instance exposes
> 1 media control device file and 3 video device files
> for a VIIF hardware. 
> Detailed HW/SW are described in documentation directory.
> The VIIF hardware has CSI2 receiver,
> image signal processor and DMAC inside.
> The subdevice for image signal processor provides
> vendor specific V4L2 controls.
> 
> The device driver depends on two other drivers under development;
> clock framework driver and IOMMU driver.
> Corresponding features will be added later.

I'm not sure what the status is of this series. There were comments for patch 1,
and also note that patch 2 never made it to the linux-media mailinglist (too large,
it should be split up in smaller patches).

I'm marking it as 'Changes Requested' in patchwork, so please post a v4
and I will do my best to review it.

Also please ping me in the future to encourage me to review it. These are
big drivers and it takes a lot of time to review, so I have a tendency (wrong,
I know) keep postponing it. A ping helps me prioritize it.

Regards,

	Hans

> 
> Best regards,
> Yuji
> 
> Changelog v2:
> - Resend v1 because a patch exceeds size limit.
> 
> Changelog v3:
> - Add documentation to describe SW and HW
> - Adapted to media control framework
> - Introduced ISP subdevice, capture device
> - Remove private IOCTLs and add vendor specific V4L2 controls
> - Change function name avoiding camelcase and uppercase letters
> 
> [0]: https://toshiba.semicon-storage.com/ap-en/semiconductor/product/image-recognition-processors-visconti.html
> 
> Yuji Ishikawa (4):
>   dt-bindings: media: platform: visconti: Add Toshiba Visconti Video
>     Input Interface bindings
>   media: platform: visconti: Add Toshiba Visconti Video Input Interface
>     driver
>   documentation: media: add documentation for Toshiba Visconti Video
>     Input Interface driver
>   MAINTAINERS: Add entries for Toshiba Visconti Video Input Interface
> 
>  .../bindings/media/toshiba,visconti-viif.yaml |  103 +
>  .../driver-api/media/drivers/index.rst        |    1 +
>  .../media/drivers/visconti-viif.rst           |  455 +++
>  MAINTAINERS                                   |    3 +
>  drivers/media/platform/Kconfig                |    2 +
>  drivers/media/platform/Makefile               |    4 +
>  drivers/media/platform/visconti/Kconfig       |    9 +
>  drivers/media/platform/visconti/Makefile      |    9 +
>  drivers/media/platform/visconti/hwd_viif.c    | 1791 +++++++++++
>  drivers/media/platform/visconti/hwd_viif.h    |  701 +++++
>  .../media/platform/visconti/hwd_viif_csi2rx.c |  723 +++++
>  .../platform/visconti/hwd_viif_internal.h     |  348 ++
>  .../media/platform/visconti/hwd_viif_l1isp.c  | 2727 ++++++++++++++++
>  .../media/platform/visconti/hwd_viif_reg.h    | 2802 +++++++++++++++++
>  drivers/media/platform/visconti/viif.c        |  479 +++
>  drivers/media/platform/visconti/viif.h        |  195 ++
>  .../media/platform/visconti/viif_capture.c    | 1215 +++++++
>  .../media/platform/visconti/viif_controls.c   | 1149 +++++++
>  drivers/media/platform/visconti/viif_isp.c    |  852 +++++
>  include/uapi/linux/visconti_viif.h            | 1724 ++++++++++
>  20 files changed, 15292 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml
>  create mode 100644 Documentation/driver-api/media/drivers/visconti-viif.rst
>  create mode 100644 drivers/media/platform/visconti/Kconfig
>  create mode 100644 drivers/media/platform/visconti/Makefile
>  create mode 100644 drivers/media/platform/visconti/hwd_viif.c
>  create mode 100644 drivers/media/platform/visconti/hwd_viif.h
>  create mode 100644 drivers/media/platform/visconti/hwd_viif_csi2rx.c
>  create mode 100644 drivers/media/platform/visconti/hwd_viif_internal.h
>  create mode 100644 drivers/media/platform/visconti/hwd_viif_l1isp.c
>  create mode 100644 drivers/media/platform/visconti/hwd_viif_reg.h
>  create mode 100644 drivers/media/platform/visconti/viif.c
>  create mode 100644 drivers/media/platform/visconti/viif.h
>  create mode 100644 drivers/media/platform/visconti/viif_capture.c
>  create mode 100644 drivers/media/platform/visconti/viif_controls.c
>  create mode 100644 drivers/media/platform/visconti/viif_isp.c
>  create mode 100644 include/uapi/linux/visconti_viif.h
>