Hi Maxime,

On Mon, Aug 29, 2022 at 3:30 PM Maxime Ripard [off-list ref] wrote:

On Wed, Aug 24, 2022 at 06:42:18PM +0200, Mateusz Kwiatkowski wrote:

quoted

- Speaking of closed captioning... a lot of different stuff were put in the
  blanking interval over the years. Like teletext in Europe. There are projects
  like VBIT2 <https://github.com/peterkvt80/vbit2> which intentionally
  reconfigure the Raspberry Pi composite output to include the blanking 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.

s/wider/higher/

Teletext is transmitted in the "visible" parts of (horizontal) lines, but during
the vertical blank.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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