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Date:   Mon, 29 Aug 2022 16:33:57 +0200
From:   Maxime Ripard <maxime@cerno.tech>
To:     Geert Uytterhoeven <geert@linux-m68k.org>
Cc:     Mateusz Kwiatkowski <kfyatek@gmail.com>,
        Jernej Skrabec <jernej.skrabec@gmail.com>,
        Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
        Chen-Yu Tsai <wens@csie.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
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        Samuel Holland <samuel@sholland.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
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        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Noralf =?utf-8?Q?Tr=C3=B8nnes?= <noralf@tronnes.org>,
        Kevin Hilman <khilman@baylibre.com>,
        Neil Armstrong <narmstrong@baylibre.com>,
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        Dom Cobley <dom@raspberrypi.com>
Subject: Re: [PATCH v1 04/35] drm/modes: Introduce 480i and 576i modes
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On Mon, Aug 29, 2022 at 04:14:54PM +0200, Geert Uytterhoeven wrote:
> Hi Maxime,
>=20
> On Mon, Aug 29, 2022 at 3:30 PM Maxime Ripard <maxime@cerno.tech> wrote:
> > On Wed, Aug 24, 2022 at 06:42:18PM +0200, Mateusz Kwiatkowski wrote:
> > > - Speaking of closed captioning... a lot of different stuff were put =
in the
> > >   blanking interval over the years. Like teletext in Europe. There ar=
e projects
> > >   like VBIT2 <https://github.com/peterkvt80/vbit2> which intentionally
> > >   reconfigure the Raspberry Pi composite output to include the blanki=
ng interval
> > >   in the framebuffer so that teletext can be output by drawing on the=
 edge of
> > >   the "screen" (from the computer point of view).
> >
> > I'm not sure how we would support this in KMS to be honest. Asking for a
> > wider mode and the userspace putting whatever it wants in the margins
> > seems like a good choice.
>=20
> s/wider/higher/
>=20
> Teletext is transmitted in the "visible" parts of (horizontal) lines, but=
 during
> the vertical blank.

Yeah, sorry I meant wider as in larger than the active area, without any
direction in mind. Thanks for the correction :)

Maxime

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