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References: <20200504141408.60877-1-enric.balletbo@collabora.com> <20200504141408.60877-4-enric.balletbo@collabora.com>
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From:   Chun-Kuang Hu <chunkuang.hu@kernel.org>
Date:   Tue, 5 May 2020 21:26:03 +0800
Message-ID: <CAAOTY_9pFfrKjg6qD5fF0gnuj0aLG7DZh1k0htg=YZGaJE9Hww@mail.gmail.com>
Subject: Re: [PATCH 3/3] drm/mediatek: mtk_dpi: Use simple encoder
To:     Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc:     linux-kernel <linux-kernel@vger.kernel.org>,
        Collabora Kernel ML <kernel@collabora.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Nicolas Boichat <drinkcat@chromium.org>,
        Hsin-Yi Wang <hsinyi@chromium.org>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Chun-Kuang Hu <chunkuang.hu@kernel.org>,
        Daniel Vetter <daniel@ffwll.ch>,
        David Airlie <airlied@linux.ie>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        DRI Development <dri-devel@lists.freedesktop.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>
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Sender: linux-kernel-owner@vger.kernel.org
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Hi, Enric:

Enric Balletbo i Serra <enric.balletbo@collabora.com> =E6=96=BC 2020=E5=B9=
=B45=E6=9C=884=E6=97=A5 =E9=80=B1=E4=B8=80 =E4=B8=8B=E5=8D=8810:14=E5=AF=AB=
=E9=81=93=EF=BC=9A
>
> The mtk_dpi driver uses an empty implementation for its encoder. Replace
> the code with the generic simple encoder.

Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---
>
>  drivers/gpu/drm/mediatek/mtk_dpi.c | 14 +++-----------
>  1 file changed, 3 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediate=
k/mtk_dpi.c
> index baad198c69eb..80778b2aac2a 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -20,6 +20,7 @@
>  #include <drm/drm_bridge.h>
>  #include <drm/drm_crtc.h>
>  #include <drm/drm_of.h>
> +#include <drm/drm_simple_kms_helper.h>
>
>  #include "mtk_dpi_regs.h"
>  #include "mtk_drm_ddp_comp.h"
> @@ -510,15 +511,6 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *=
dpi,
>         return 0;
>  }
>
> -static void mtk_dpi_encoder_destroy(struct drm_encoder *encoder)
> -{
> -       drm_encoder_cleanup(encoder);
> -}
> -
> -static const struct drm_encoder_funcs mtk_dpi_encoder_funcs =3D {
> -       .destroy =3D mtk_dpi_encoder_destroy,
> -};
> -
>  static int mtk_dpi_bridge_attach(struct drm_bridge *bridge,
>                                  enum drm_bridge_attach_flags flags)
>  {
> @@ -591,8 +583,8 @@ static int mtk_dpi_bind(struct device *dev, struct de=
vice *master, void *data)
>                 return ret;
>         }
>
> -       ret =3D drm_encoder_init(drm_dev, &dpi->encoder, &mtk_dpi_encoder=
_funcs,
> -                              DRM_MODE_ENCODER_TMDS, NULL);
> +       ret =3D drm_simple_encoder_init(drm_dev, &dpi->encoder,
> +                                     DRM_MODE_ENCODER_TMDS);
>         if (ret) {
>                 dev_err(dev, "Failed to initialize decoder: %d\n", ret);
>                 goto err_unregister;
> --
> 2.26.2
>