linux-kernel - Re: [PATCH v4 07/15] media: mtk-vcodec: vdec: add media device if using stateless api

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Date:   Wed, 19 May 2021 14:23:25 +0900
From:   Alexandre Courbot <acourbot@...omium.org>
To:     Hsin-Yi Wang <hsinyi@...omium.org>
Cc:     Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>,
        Yunfei Dong <yunfei.dong@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH v4 07/15] media: mtk-vcodec: vdec: add media device if
 using stateless api

On Mon, May 17, 2021 at 1:35 PM Hsin-Yi Wang <hsinyi@...omium.org> wrote:
>
> On Tue, Apr 27, 2021 at 7:16 PM Alexandre Courbot <acourbot@...omium.org> wrote:
> >
> > From: Yunfei Dong <yunfei.dong@...iatek.com>
> >
> > The stateless API requires a media device for issuing requests. Add one
> > if we are being instantiated as a stateless decoder.
> >
> > Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
> > [acourbot: refactor, cleanup and split]
> > Co-developed-by: Alexandre Courbot <acourbot@...omium.org>
> > Signed-off-by: Alexandre Courbot <acourbot@...omium.org>
> > ---
> >  drivers/media/platform/Kconfig                |  1 +
> >  .../platform/mtk-vcodec/mtk_vcodec_dec_drv.c  | 39 +++++++++++++++++++
> >  .../platform/mtk-vcodec/mtk_vcodec_drv.h      |  2 +
> >  3 files changed, 42 insertions(+)
> >
> > diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> > index ae1468aa1b4e..4154fdec2efb 100644
> > --- a/drivers/media/platform/Kconfig
> > +++ b/drivers/media/platform/Kconfig
> > @@ -315,6 +315,7 @@ config VIDEO_MEDIATEK_VCODEC
> >         select VIDEO_MEDIATEK_VCODEC_VPU if VIDEO_MEDIATEK_VPU
> >         select VIDEO_MEDIATEK_VCODEC_SCP if MTK_SCP
> >         select V4L2_H264
> > +       select MEDIA_CONTROLLER
>
> Should this also select MEDIA_CONTROLLER_REQUEST_API config?

Yup, it probably should. hantro and rkvdec also select it, so let's do the same.

Thanks!
Alex.