linux-kernel - Re: [PATCH v1 1/1] Support YUV422 for DPTX.

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Message-ID: <8d624845-7450-485c-8000-0194bcf56458@collabora.com>
Date: Fri, 10 May 2024 12:05:49 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Liankun Yang <liankun.yang@...iatek.com>, chunkuang.hu@...nel.org,
 p.zabel@...gutronix.de, airlied@...il.com, daniel@...ll.ch,
 matthias.bgg@...il.com, jitao.shi@...iatek.com, mac.shen@...iatek.com
Cc: dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/1] Support YUV422 for DPTX.

Il 10/05/24 04:15, Liankun Yang ha scritto:
> Adjust the training sequence.Detects the actual link condition
> and calculates the bandwidth where the relevant resolution resides.
> 
> The bandwidth is recalculated and modes that exceed the bandwidth are
> filtered.
> 
> Example Modify bandwidth filtering requirements.
> 
> Signed-off-by: Liankun Yang <liankun.yang@...iatek.com>
> ---
>   drivers/gpu/drm/mediatek/mtk_dp.c | 81 ++++++++++++++++++-------------
>   1 file changed, 46 insertions(+), 35 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
> index 2136a596efa1..3e645bd6fe27 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dp.c
> @@ -66,6 +66,13 @@ enum {
>   	MTK_DP_CAL_MAX,
>   };
>   
> +enum mtk_dp_color_format {
> +	MTK_DP_COLOR_FORMAT_RGB = 0,
> +	MTK_DP_COLOR_FORMAT_YUV422 = 0x1,
> +	MTK_DP_COLOR_FORMAT_YUV444 = 0x2,
> +	MTK_DP_COLOR_FORMAT_YUV420 = 0x3,
> +};

This is giving the same values as drm_dp.h, hence unneeded.

> +
>   struct mtk_dp_train_info {
>   	bool sink_ssc;
>   	bool cable_plugged_in;
> @@ -84,7 +91,7 @@ struct mtk_dp_audio_cfg {
>   };
>   
>   struct mtk_dp_info {
> -	enum dp_pixelformat format;
> +	enum mtk_dp_color_format format;
>   	struct videomode vm;
>   	struct mtk_dp_audio_cfg audio_cur_cfg;
>   };
> @@ -457,7 +464,7 @@ static void mtk_dp_set_msa(struct mtk_dp *mtk_dp)

.snip..

> @@ -1888,9 +1896,28 @@ static irqreturn_t mtk_dp_hpd_event_thread(int hpd, void *dev)
>   			memset(&mtk_dp->info.audio_cur_cfg, 0,
>   			       sizeof(mtk_dp->info.audio_cur_cfg));
>   
> +			mtk_dp->enabled = false;
> +			/* power off aux */
> +			mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
> +			       DP_PWR_STATE_BANDGAP_TPLL,
> +			       DP_PWR_STATE_MASK);
> +

This commit is not even based on upstream, so you haven't even tested it upstream.

Don't send untested commits.
There's nothing to review here.

Regards,
Angelo