linux-kernel - RE: [PATCH v7 0/5] Add Toshiba Visconti Video Input Interface driver

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Message-ID: <TYAPR01MB62010A9E39F05B4E2BB73E5192E6A@TYAPR01MB6201.jpnprd01.prod.outlook.com>
Date:   Wed, 30 Aug 2023 00:44:57 +0000
From:   <yuji2.ishikawa@...hiba.co.jp>
To:     <hverkuil@...all.nl>, <sakari.ailus@....fi>,
        <laurent.pinchart@...asonboard.com>, <mchehab@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <nobuhiro1.iwamatsu@...hiba.co.jp>,
        <broonie@...nel.org>
CC:     <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v7 0/5] Add Toshiba Visconti Video Input Interface driver

Hello Hans,

> -----Original Message-----
> From: Hans Verkuil <hverkuil@...all.nl>
> Sent: Monday, August 21, 2023 9:59 PM
> To: ishikawa yuji(石川 悠司 ○ＲＤＣ□ＡＩＴＣ○ＥＡ開)
> <yuji2.ishikawa@...hiba.co.jp>; Sakari Ailus <sakari.ailus@....fi>; Laurent
> Pinchart <laurent.pinchart@...asonboard.com>; Mauro Carvalho Chehab
> <mchehab@...nel.org>; Rob Herring <robh+dt@...nel.org>; Krzysztof
> Kozlowski <krzysztof.kozlowski+dt@...aro.org>; Conor Dooley
> <conor+dt@...nel.org>; iwamatsu nobuhiro(岩松 信洋 ○ＤＩＴＣ□ＤＩＴ○
> ＯＳＴ) <nobuhiro1.iwamatsu@...hiba.co.jp>; Mark Brown
> <broonie@...nel.org>
> Cc: linux-media@...r.kernel.org; devicetree@...r.kernel.org;
> linux-arm-kernel@...ts.infradead.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH v7 0/5] Add Toshiba Visconti Video Input Interface driver
> 
> Hi Yuji,
> 
> On 14/07/2023 03:50, 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.
> 
> Trying to compile this series on top of our latest staging tree fails due to
> v4l2-async changes that have been merged. So for v8 please rebase to the
> staging tree.

All right. The v8 patchset will be rebased to media_stage.git .

> I also got a few kerneldoc warnings:
> 
> drivers/media/platform/toshiba/visconti/viif.h:217: warning: Function
> parameter or member 'ops_lock' not described in 'isp_subdev'
> drivers/media/platform/toshiba/visconti/viif.h:233: warning: Function
> parameter or member 'ops_lock' not described in 'csi2rx_subdev'
> drivers/media/platform/toshiba/visconti/viif.h:254: warning: Function
> parameter or member 'post_enable_flag' not described in 'viif_l2_roi_path_info'

I'll check for kerneldoc warnings and fix them.

Regards,
Yuji

> 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
> >
> > Changelog v4:
> > - Split patches because a patch exceeds size limit
> > - fix dt-bindings document
> > - stop specifying ID numbers for driver instance explicitly at device
> > tree
> > - use pm_runtime to trigger initialization of HW
> >   along with open/close of device files.
> > - add a entry for a header file at MAINTAINERS file
> >
> > Changelog v5:
> > - Fix coding style problem in viif.c (patch 2/6)
> >
> > Changelog v6:
> > - add register definition of BUS-IF and MPU in dt-bindings
> > - add CSI2RX subdevice (separeted from ISP subdevice)
> > - change directory layout (moved to media/platform/toshiba/visconti)
> > - change source file layout (removed hwd_xxxx.c)
> > - pointer to userland memory is removed from uAPI parameters
> > - change register access (from struct style to macro style)
> > - remove unused macros
> >
> > Changelog v7:
> > - remove redundant "bindings" from header and description text
> > - fix multiline text of "description"
> > - change "compatible" to "visconti5-viif"
> > - explicitly define allowed properties for port::endpoint
> > - remove unused variables
> > - update kerneldoc comments
> > - update references to headers
> >
> > Yuji Ishikawa (5):
> >   dt-bindings: media: platform: visconti: Add Toshiba Visconti Video
> >     Input Interface
> >   media: platform: visconti: Add Toshiba Visconti Video Input Interface
> >     driver
> >   media: add V4L2 vendor specific control handlers
> >   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 |  108 +
> >  .../driver-api/media/drivers/index.rst        |    1 +
> >  .../media/drivers/visconti-viif.rst           |  462 +++
> >  MAINTAINERS                                   |    4 +
> >  drivers/media/platform/Kconfig                |    1 +
> >  drivers/media/platform/Makefile               |    1 +
> >  drivers/media/platform/toshiba/Kconfig        |    6 +
> >  drivers/media/platform/toshiba/Makefile       |    2 +
> >  .../media/platform/toshiba/visconti/Kconfig   |   18 +
> >  .../media/platform/toshiba/visconti/Makefile  |    8 +
> >  .../media/platform/toshiba/visconti/viif.c    |  681 ++++
> >  .../media/platform/toshiba/visconti/viif.h    |  375 ++
> >  .../platform/toshiba/visconti/viif_capture.c  | 1485 +++++++
> >  .../platform/toshiba/visconti/viif_capture.h  |   22 +
> >  .../platform/toshiba/visconti/viif_common.c   |  199 +
> >  .../platform/toshiba/visconti/viif_common.h   |   38 +
> >  .../platform/toshiba/visconti/viif_controls.c | 3407
> +++++++++++++++++
> >  .../platform/toshiba/visconti/viif_controls.h |   18 +
> >  .../platform/toshiba/visconti/viif_csi2rx.c   |  684 ++++
> >  .../platform/toshiba/visconti/viif_csi2rx.h   |   24 +
> >  .../toshiba/visconti/viif_csi2rx_regs.h       |  102 +
> >  .../platform/toshiba/visconti/viif_isp.c      | 1258 ++++++
> >  .../platform/toshiba/visconti/viif_isp.h      |   24 +
> >  .../platform/toshiba/visconti/viif_regs.h     |  716 ++++
> >  include/uapi/linux/v4l2-controls.h            |    6 +
> >  include/uapi/linux/visconti_viif.h            | 1800 +++++++++
> >  26 files changed, 11450 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/toshiba/Kconfig
> >  create mode 100644 drivers/media/platform/toshiba/Makefile
> >  create mode 100644 drivers/media/platform/toshiba/visconti/Kconfig
> >  create mode 100644 drivers/media/platform/toshiba/visconti/Makefile
> >  create mode 100644 drivers/media/platform/toshiba/visconti/viif.c
> >  create mode 100644 drivers/media/platform/toshiba/visconti/viif.h
> >  create mode 100644
> > drivers/media/platform/toshiba/visconti/viif_capture.c
> >  create mode 100644
> > drivers/media/platform/toshiba/visconti/viif_capture.h
> >  create mode 100644
> > drivers/media/platform/toshiba/visconti/viif_common.c
> >  create mode 100644
> > drivers/media/platform/toshiba/visconti/viif_common.h
> >  create mode 100644
> > drivers/media/platform/toshiba/visconti/viif_controls.c
> >  create mode 100644
> > drivers/media/platform/toshiba/visconti/viif_controls.h
> >  create mode 100644
> > drivers/media/platform/toshiba/visconti/viif_csi2rx.c
> >  create mode 100644
> > drivers/media/platform/toshiba/visconti/viif_csi2rx.h
> >  create mode 100644
> > drivers/media/platform/toshiba/visconti/viif_csi2rx_regs.h
> >  create mode 100644 drivers/media/platform/toshiba/visconti/viif_isp.c
> >  create mode 100644 drivers/media/platform/toshiba/visconti/viif_isp.h
> >  create mode 100644
> > drivers/media/platform/toshiba/visconti/viif_regs.h
> >  create mode 100644 include/uapi/linux/visconti_viif.h
> >