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 <20210106231729.17173-4-chunkuang.hu@kernel.org> <YAh2JGUUpMcgyke0@ziggy.stardust>
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From:   Chun-Kuang Hu <chunkuang.hu@kernel.org>
Date:   Thu, 21 Jan 2021 07:46:44 +0800
Message-ID: <CAAOTY_82Z_DQuJWDD5NMeq35o2Tf-zQzmSxJwRYRRpHQJVHNEA@mail.gmail.com>
Subject: Re: [PATCH v2 3/5] drm/mediatek: Change disp/ddp term to mutex in mtk
 mutex driver
To:     Matthias Brugger <matthias.bgg@kernel.org>
Cc:     Chun-Kuang Hu <chunkuang.hu@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        DRI Development <dri-devel@lists.freedesktop.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>, CK Hu <ck.hu@mediatek.com>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>
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Hi, Matthias:

Matthias Brugger <matthias.bgg@kernel.org> =E6=96=BC 2021=E5=B9=B41=E6=9C=
=8821=E6=97=A5 =E9=80=B1=E5=9B=9B =E4=B8=8A=E5=8D=882:27=E5=AF=AB=E9=81=93=
=EF=BC=9A
>
> On Thu, Jan 07, 2021 at 07:17:27AM +0800, Chun-Kuang Hu wrote:
> > From: CK Hu <ck.hu@mediatek.com>
> >
> > mtk mutex is used by both drm and mdp driver, so change disp/ddp term t=
o
> > mutex to show that it's a common driver for drm and mdp.
> >
> > Signed-off-by: CK Hu <ck.hu@mediatek.com>
> > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > ---
> >  drivers/gpu/drm/mediatek/mtk_drm_crtc.c |  30 +--
> >  drivers/gpu/drm/mediatek/mtk_drm_drv.c  |   2 +-
> >  drivers/gpu/drm/mediatek/mtk_drm_drv.h  |   2 +-
> >  drivers/gpu/drm/mediatek/mtk_mutex.c    | 305 ++++++++++++------------
> >  drivers/gpu/drm/mediatek/mtk_mutex.h    |  26 +-
> >  5 files changed, 182 insertions(+), 183 deletions(-)
> >
> [...]
> > diff --git a/drivers/gpu/drm/mediatek/mtk_mutex.c b/drivers/gpu/drm/med=
iatek/mtk_mutex.c
> > index 1c8a253f4788..98a060bf225d 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_mutex.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_mutex.c
> [...]
> >
> > -static const struct of_device_id ddp_driver_dt_match[] =3D {
> > +static const struct of_device_id mutex_driver_dt_match[] =3D {
> >       { .compatible =3D "mediatek,mt2701-disp-mutex",
> > -       .data =3D &mt2701_ddp_driver_data},
> > +       .data =3D &mt2701_mutex_driver_data},
> >       { .compatible =3D "mediatek,mt2712-disp-mutex",
> > -       .data =3D &mt2712_ddp_driver_data},
> > +       .data =3D &mt2712_mutex_driver_data},
> >       { .compatible =3D "mediatek,mt8167-disp-mutex",
> > -       .data =3D &mt8167_ddp_driver_data},
> > +       .data =3D &mt8167_mutex_driver_data},
> >       { .compatible =3D "mediatek,mt8173-disp-mutex",
> > -       .data =3D &mt8173_ddp_driver_data},
> > +       .data =3D &mt8173_mutex_driver_data},
> >       {},
> >  };
> > -MODULE_DEVICE_TABLE(of, ddp_driver_dt_match);
> > +MODULE_DEVICE_TABLE(of, mutex_driver_dt_match);
>
> I think it would make sense in a follow-up patch to update the binding
> to use "mediatek,mt2701-mutex" to reflect that mutex is used for drm and
> mdp driver. Make sense?

Yes, it make sense. I would try to update the binding, but I wonder
device tree should be backward compatible? Let's discuss in that
follow-up patches.

Regards,
Chun-Kuang.

>
> Regards,
> Matthias