linux-kernel - Re: [PATCH v27 6/7] drm/mediatek: add drm ovl

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Date:   Thu, 3 Nov 2022 17:28:00 -0400
From:   Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>
To:     "Nancy.Lin" <nancy.lin@...iatek.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>, wim@...ux-watchdog.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>, linux@...ck-us.net,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        "jason-jh . lin" <jason-jh.lin@...iatek.com>,
        Yongqiang Niu <yongqiang.niu@...iatek.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        dri-devel@...ts.freedesktop.org, llvm@...ts.linux.dev,
        singo.chang@...iatek.com,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v27 6/7] drm/mediatek: add drm ovl_adaptor sub driver for
 MT8195

On Thu, Nov 03, 2022 at 11:26:09AM +0800, Nancy.Lin wrote:
> Add drm ovl_adaptor sub driver. Bring up ovl_adaptor sub driver if
> the component exists in the path.
> 
> Signed-off-by: Nancy.Lin <nancy.lin@...iatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> Reviewed-by: CK Hu <ck.hu@...iatek.com>
> Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> Tested-by: Bo-Chen Chen <rex-bc.chen@...iatek.com>
> Tested-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
> Change-Id: I0501f3c80e78ec8279366cba9c137a2edd7a852e
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c     |  61 ++++-----
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.h     |   2 +-
>  drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 129 ++++++++++++--------
>  drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h |  50 +++++++-
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c      |  78 ++++++------
>  drivers/gpu/drm/mediatek/mtk_drm_drv.h      |  12 +-
>  6 files changed, 209 insertions(+), 123 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index 30dcb65d8a5a..ce5617ad04cb 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
[..]
>  int mtk_drm_crtc_create(struct drm_device *drm_dev,
> -			const enum mtk_ddp_comp_id *path, unsigned int path_len,
> +			const unsigned int *path, unsigned int path_len,

Hi Nancy,

why is 'enum mtk_ddp_comp_id' being changed to 'unsigned int' throughout this
patch? Was this intentional?

I saw that this change happened between v16 [1] and v17 [2], but I didn't see
any reply or mention about this in the commit message or cover letter.

Thanks,
Nícolas

[1] https://lore.kernel.org/all/20220318142009.2796-21-nancy.lin@mediatek.com/
[2] https://lore.kernel.org/all/20220416020749.29010-20-nancy.lin@mediatek.com/