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From: Aurabindo Pillai <aurabindo.pillai@amd.com>
To: Pekka Paalanen <ppaalanen@gmail.com>
Cc: stylon.wang@amd.com, shashank.sharma@amd.com, thong.thai@amd.com,
	dri-devel@lists.freedesktop.org,
	"Christian König" <christian.koenig@amd.com>,
	amd-gfx@lists.freedesktop.org, "Daniel Vetter" <daniel@ffwll.ch>,
	wayne.lin@amd.com, alexander.deucher@amd.com,
	nicholas.kazlauskas@amd.com
Subject: Re: [PATCH v3 1/3] drm/amd/display: Add module parameter for freesync video mode
Date: Mon, 18 Jan 2021 09:36:47 -0500	[thread overview]
Message-ID: <b38e46b7707ba9a899384baedc7efe4e70c439bf.camel@amd.com> (raw)
In-Reply-To: <20210114111445.1d2bbf62@eldfell>

On Thu, 2021-01-14 at 11:14 +0200, Pekka Paalanen wrote:
> 
> Hi,
> 
> please document somewhere that ends up in git history (commit
> message,
> code comments, description of the parameter would be the best but
> maybe
> there isn't enough space?) what Christian König explained in
> 
>  
> https://lists.freedesktop.org/archives/dri-devel/2020-December/291254.html
> 
> that this is a stop-gap feature intended to be removed as soon as
> possible (when a better solution comes up, which could be years).
> 
> So far I have not seen a single mention of this intention in your
> patch
> submissions, and I think it is very important to make known.

Hi,

Thanks for the headsup, I shall add the relevant info in the next
verison.

> 
> I also did not see an explanation of why this instead of
> manufacturing
> these video modes in userspace (an idea mentioned by Christian in the
> referenced email). I think that too should be part of a commit
> message.

This is an opt-in feature, which shall be superseded by a better
solution. We also add a set of common modes for scaling similarly.
Userspace can still add whatever mode they want. So I dont see a reason
why this cant be in the kernel.

--

Regards,
Aurabindo Pillai

> 
> 
> Thanks,
> pq


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  reply	other threads:[~2021-01-18 14:37 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-04 21:07 [PATCH v3 0/3] Experimental freesync video mode optimization Aurabindo Pillai
2021-01-04 21:07 ` [PATCH v3 1/3] drm/amd/display: Add module parameter for freesync video mode Aurabindo Pillai
2021-01-14  9:14   ` Pekka Paalanen
2021-01-18 14:36     ` Aurabindo Pillai [this message]
2021-01-19  8:35       ` Pekka Paalanen
2021-01-19 13:11         ` Daniel Vetter
2021-01-19 16:08           ` Pillai, Aurabindo
2021-01-19 18:58             ` Daniel Vetter
2021-01-04 21:07 ` [PATCH v3 2/3] drm/amd/display: Add freesync video modes based on preferred modes Aurabindo Pillai
2021-01-04 21:08 ` [PATCH v3 3/3] drm/amd/display: Skip modeset for front porch change Aurabindo Pillai
2021-01-06 20:02   ` Kazlauskas, Nicholas
2021-01-17 19:52     ` Aurabindo Pillai
  -- strict thread matches above, loose matches on Subject: below --
2020-12-14 22:20 [PATCH v3 0/3] Experimental freesync video mode optimization Aurabindo Pillai
2020-12-14 22:20 ` [PATCH v3 1/3] drm/amd/display: Add module parameter for freesync video mode Aurabindo Pillai
2020-12-17 19:11   ` Alex Deucher
2020-12-17 22:37     ` Aurabindo Pillai

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