linux-kernel - Re: [PATCH v3 9/9] drm/mediatek: reduce clear event

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Date:   Mon, 21 Sep 2020 18:36:45 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Bibby Hsieh <bibby.hsieh@...iatek.com>,
        Dennis YC Hsieh <dennis-yc.hsieh@...iatek.com>
Cc:     Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, CK Hu <ck.hu@...iatek.com>,
        Houlong Wei <houlong.wei@...iatek.com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        wsd_upstream@...iatek.com, HS Liao <hs.liao@...iatek.com>
Subject: Re: [PATCH v3 9/9] drm/mediatek: reduce clear event



On 09/07/2020 04:39, Bibby Hsieh wrote:
> Hi, Dennis,
> 
> Thanks for this patch.
> 
> It's better to send another tree for this patch.
> Because this tree is only for soc/mediatek.
> 
> Please do not forget to add the dependency information.

Normally you are right. This time I took this patch as well into my tree. I 
verified with the merge tag from CKs DRM tree that we don't have any conflicts, 
so we should be Ok.

Regards,
Matthias

> 
> Bibby
> 
> On Tue, 2020-07-07 at 23:45 +0800, Dennis YC Hsieh wrote:
>> No need to clear event again since event always clear before wait.
>> This fix depend on patch:
>>    "soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api"
>>
>> Fixes: 2f965be7f9008 ("drm/mediatek: apply CMDQ control flow")
>> Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@...iatek.com>
> 
> Reviewed-by: Bibby Hsieh <bibby.hsieh@...iatek.com>
> 
>> ---
>>   drivers/gpu/drm/mediatek/mtk_drm_crtc.c |    2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
>> index c84e7a14d4a8..ba6cf956b239 100644
>> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
>> @@ -490,7 +490,7 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
>>   		mbox_flush(mtk_crtc->cmdq_client->chan, 2000);
>>   		cmdq_handle = cmdq_pkt_create(mtk_crtc->cmdq_client, PAGE_SIZE);
>>   		cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
>> -		cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, true);
>> +		cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
>>   		mtk_crtc_ddp_config(crtc, cmdq_handle);
>>   		cmdq_pkt_finalize(cmdq_handle);
>>   		cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
>