From: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
To: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
David Airlie <airlied@linux.ie>, Chen-Yu Tsai <wens@csie.org>,
Daniel Vetter <daniel.vetter@intel.com>,
Gustavo Padovan <gustavo@padovan.org>,
Sean Paul <seanpaul@chromium.org>
Subject: Re: [PATCH 02/10] drm/sun4i: Disable YUV channel when using the frontend and set interlace
Date: Tue, 27 Mar 2018 10:44:19 +0200 [thread overview]
Message-ID: <1522140259.1110.43.camel@bootlin.com> (raw)
In-Reply-To: <20180327081731.he3lhnvqffuimsi5@flea>
[-- Attachment #1: Type: text/plain, Size: 1815 bytes --]
Hi,
On Tue, 2018-03-27 at 10:17 +0200, Maxime Ripard wrote:
> On Tue, Mar 27, 2018 at 10:00:43AM +0200, Paul Kocialkowski wrote:
> > Hi,
> >
> > On Fri, 2018-03-23 at 10:55 +0100, Maxime Ripard wrote:
> > > On Wed, Mar 21, 2018 at 04:28:56PM +0100, Paul Kocialkowski wrote:
> > > > The YUV channel was only disabled in
> > > > sun4i_backend_update_layer_formats,
> > > > which is not called when the frontend is selected.
> > > >
> > > > Thus, creating a layer with a YUV format handled by the backend
> > > > and
> > > > then
> > > > switching to a format that requires the frontend would keep the
> > > > YUV
> > > > channel enabled for the layer.
> > > >
> > > > This explicitly disables the YUV channel for the layer when
> > > > using
> > > > the
> > > > frontend as well. It also sets the relevant interlace bit, which
> > > > was
> > > > missing in the frontend path as well.
> > >
> > > This should be part of a separate patch. Usually, if you write "it
> > > also does..." at the end of your commit log, it's a pretty good
> > > indication that it should be another patch :)
> >
> > I must say, I figured that this part was missing in the frontend
> > path by
> > chance and couldn't really test the feature, so I'm also tempted to
> > drop
> > it altogether. What do you think?
>
> If you haven't been able to test it, then yeah, don't submit it.
Alright, noted.
> > Also, is interlacing actually used on any of the video outputs we
> > support? Perhaps RGB?
>
> Composite would be a better guess :)
Oh and I was wondering what CVBS was about. Now I know!
It seems that we don't support it for now apparently, anyway.
Thanks,
--
Paul Kocialkowski, Bootlin (formerly Free Electrons)
Embedded Linux and kernel engineering
https://bootlin.com
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
next prev parent reply other threads:[~2018-03-27 8:45 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-21 15:28 [PATCH 00/10] drm/sun4i: Frontend YUV and MB32 tile modifier support Paul Kocialkowski
2018-03-21 15:28 ` [PATCH 01/10] drm/sun4i: Disable frontend video channel before enabling a layer Paul Kocialkowski
2018-03-23 9:53 ` Maxime Ripard
2018-03-21 15:28 ` [PATCH 02/10] drm/sun4i: Disable YUV channel when using the frontend and set interlace Paul Kocialkowski
2018-03-23 9:55 ` Maxime Ripard
2018-03-27 8:00 ` Paul Kocialkowski
2018-03-27 8:17 ` Maxime Ripard
2018-03-27 8:44 ` Paul Kocialkowski [this message]
2018-03-27 8:48 ` Chen-Yu Tsai
2018-03-27 9:18 ` Maxime Ripard
2018-03-27 9:21 ` Paul Kocialkowski
2018-03-21 15:28 ` [PATCH 03/10] drm/sun4i: Don't pretend to handle ARGB8888 with the frontend Paul Kocialkowski
2018-03-22 6:47 ` Chen-Yu Tsai
2018-03-22 8:23 ` Paul Kocialkowski
2018-03-22 8:37 ` Chen-Yu Tsai
2018-03-22 8:41 ` Paul Kocialkowski
2018-03-22 16:12 ` Maxime Ripard
2018-03-22 16:18 ` Paul Kocialkowski
2018-03-21 15:28 ` [PATCH 04/10] drm/sun4i: Explicitly list and check formats supported by the backend Paul Kocialkowski
2018-03-23 10:03 ` Maxime Ripard
2018-03-27 8:08 ` Paul Kocialkowski
2018-03-29 7:56 ` Maxime Ripard
2018-10-16 13:55 ` Paul Kocialkowski
2018-10-17 15:33 ` Maxime Ripard
2018-03-21 15:28 ` [PATCH 05/10] drm/sun4i: Explicitly list and check formats supported by the frontend Paul Kocialkowski
2018-03-23 10:06 ` Maxime Ripard
2018-03-27 8:24 ` Paul Kocialkowski
2018-03-29 9:03 ` Maxime Ripard
2018-10-16 13:57 ` Paul Kocialkowski
2018-03-21 15:29 ` [PATCH 06/10] drm/sun4i: Move and extend format-related helpers and tables Paul Kocialkowski
2018-03-23 10:13 ` Maxime Ripard
2018-03-27 8:27 ` Paul Kocialkowski
2018-03-27 14:47 ` Maxime Ripard
2018-03-21 15:29 ` [PATCH 07/10] drm/sun4i: Add support for YUV formats through the frontend Paul Kocialkowski
2018-03-23 10:30 ` Maxime Ripard
2018-03-27 8:39 ` Paul Kocialkowski
2018-03-21 15:29 ` [PATCH 08/10] drm/fourcc: Add definitions for Allwinner vendor and MB32 tiled format Paul Kocialkowski
2018-03-21 16:47 ` Daniel Stone
2018-03-22 8:05 ` Paul Kocialkowski
2018-03-21 15:29 ` [PATCH 09/10] drm/sun4i: Add a dedicated ioctl call for allocating tiled buffers Paul Kocialkowski
2018-03-23 10:48 ` Maxime Ripard
2018-03-27 8:41 ` Paul Kocialkowski
2018-03-27 14:48 ` Maxime Ripard
2018-03-21 15:29 ` [PATCH 10/10] drm/sun4i: Add support for YUV-based formats in MB32 tiles Paul Kocialkowski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1522140259.1110.43.camel@bootlin.com \
--to=paul.kocialkowski@bootlin.com \
--cc=airlied@linux.ie \
--cc=daniel.vetter@intel.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=gustavo@padovan.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maxime.ripard@bootlin.com \
--cc=seanpaul@chromium.org \
--cc=wens@csie.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).