linux-kernel - Re: [PATCH v3 06/12] drm/mediatek: hdmi: add frame

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Date:   Mon, 7 Nov 2022 12:09:30 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Guillaume Ranquet <granquet@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Jitao shi <jitao.shi@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Vinod Koul <vkoul@...nel.org>, CK Hu <ck.hu@...iatek.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Kishon Vijay Abraham I <kishon@...com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, stuart.lee@...iatek.com,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        mac.shen@...iatek.com, linux-phy@...ts.infradead.org
Subject: Re: [PATCH v3 06/12] drm/mediatek: hdmi: add frame_colorimetry flag

Il 04/11/22 15:09, Guillaume Ranquet ha scritto:
> Add a flag to indicate support for frame colorimetry.
> 
> Signed-off-by: Guillaume Ranquet <granquet@...libre.com>
> ---
>   drivers/gpu/drm/mediatek/mtk_hdmi_common.c | 11 +++++++++++
>   drivers/gpu/drm/mediatek/mtk_hdmi_common.h |  1 +
>   2 files changed, 12 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
> index 3635ca66817b..933c51b5f6d7 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
> @@ -120,6 +120,17 @@ int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi, u8 *buffer, size_t bufsz
>   		return err;
>   	}
>   
> +	if (hdmi->conf->has_frame_colorimetry) {
> +		frame.colorimetry = hdmi->colorimtery;

Typo: s/colorimtery/colorimetry/g

...also, I don't see this being really used? In hdmi-v2 you're setting this param
to HDMI_COLORIMETRY_NONE and quantization ranges to always the same default value.

I wonder if this is really needed at this point.

Regards,
Angelo