linux-kernel - Re: [linux-sunxi] [PATCH v12 2/2] media: V3s: Add support for Allwinner CSI.

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Date:   Mon, 19 Nov 2018 17:38:09 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Yong Deng <yong.deng@...ewell.com>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Chen-Yu Tsai <wens@...e.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        davem@...emloft.net, akpm@...ux-foundation.org,
        Arnd Bergmann <arnd@...db.de>,
        Hans Verkuil <hans.verkuil@...co.com>,
        laurent.pinchart@...asonboard.com, geert@...ux-m68k.org,
        Neil Armstrong <narmstrong@...libre.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        jacopo+renesas@...ndi.org, tglx@...utronix.de,
        todor.tomov@...aro.org, linux-media <linux-media@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi@...glegroups.com,
        Sakari Ailus <sakari.ailus@...ux.intel.com>
Subject: Re: [linux-sunxi] [PATCH v12 2/2] media: V3s: Add support for
 Allwinner CSI.

On Tue, Oct 30, 2018 at 1:49 PM Yong Deng <yong.deng@...ewell.com> wrote:
>
> Allwinner V3s SoC features a CSI module with parallel interface.
>
> This patch implement a v4l2 framework driver for it.
>
> Reviewed-by: Hans Verkuil <hans.verkuil@...co.com>
> Reviewed-by: Maxime Ripard <maxime.ripard@...tlin.com>
> Tested-by: Maxime Ripard <maxime.ripard@...tlin.com>
> Signed-off-by: Yong Deng <yong.deng@...ewell.com>
> ---
>  MAINTAINERS                                        |   8 +
>  drivers/media/platform/Kconfig                     |   1 +
>  drivers/media/platform/Makefile                    |   2 +
>  drivers/media/platform/sunxi/sun6i-csi/Kconfig     |   9 +
>  drivers/media/platform/sunxi/sun6i-csi/Makefile    |   3 +
>  drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 915 +++++++++++++++++++++
>  drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h | 135 +++
>  .../media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h | 196 +++++
>  .../media/platform/sunxi/sun6i-csi/sun6i_video.c   | 678 +++++++++++++++
>  .../media/platform/sunxi/sun6i-csi/sun6i_video.h   |  38 +
>  10 files changed, 1985 insertions(+)
>  create mode 100644 drivers/media/platform/sunxi/sun6i-csi/Kconfig
>  create mode 100644 drivers/media/platform/sunxi/sun6i-csi/Makefile
>  create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
>  create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
>  create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h
>  create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
>  create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 23021e0df5d7..42d73b35ed3e 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -3900,6 +3900,14 @@ M:       Jaya Kumar <jayakumar.alsa@...il.com>
>  S:     Maintained
>  F:     sound/pci/cs5535audio/
>
> +CSI DRIVERS FOR ALLWINNER V3s
> +M:     Yong Deng <yong.deng@...ewell.com>
> +L:     linux-media@...r.kernel.org
> +T:     git git://linuxtv.org/media_tree.git
> +S:     Maintained
> +F:     drivers/media/platform/sunxi/sun6i-csi/
> +F:     Documentation/devicetree/bindings/media/sun6i-csi.txt
> +
>  CW1200 WLAN driver
>  M:     Solomon Peachy <pizza@...ftnet.org>
>  S:     Maintained
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index 0edacfb01f3a..be6626ed0ec8 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -138,6 +138,7 @@ source "drivers/media/platform/am437x/Kconfig"
>  source "drivers/media/platform/xilinx/Kconfig"
>  source "drivers/media/platform/rcar-vin/Kconfig"
>  source "drivers/media/platform/atmel/Kconfig"
> +source "drivers/media/platform/sunxi/sun6i-csi/Kconfig"

[snip]

> +
> +       return 0;
> +}
> +
> +static int sun6i_subdev_notify_complete(struct v4l2_async_notifier *notifier)
> +{
> +       struct sun6i_csi *csi = container_of(notifier, struct sun6i_csi,
> +                                            notifier);
> +       struct v4l2_device *v4l2_dev = &csi->v4l2_dev;
> +       struct v4l2_subdev *sd;
> +       int ret;
> +
> +       dev_dbg(csi->dev, "notify complete, all subdevs registered\n");
> +
> +       if (notifier->num_subdevs != 1)

drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c: In function
‘sun6i_subdev_notify_complete’:
drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c:646:14: error:
‘struct v4l2_async_notifier’ has no member named ‘num_subdevs’