From: Sam Ravnborg <sam@ravnborg.org>
To: "Noralf Trønnes" <noralf@tronnes.org>
Cc: linux-fbdev@vger.kernel.org, David Airlie <airlied@linux.ie>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
Emil Velikov <emil.l.velikov@gmail.com>,
Javier Martinez Canillas <javierm@redhat.com>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Geert Uytterhoeven <geert@linux-m68k.org>,
Maxime Ripard <maxime@cerno.tech>,
Thomas Zimmermann <tzimmermann@suse.de>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: Re: [PATCH 1/4] drm: Add I2C connector type
Date: Tue, 1 Feb 2022 21:57:50 +0100 [thread overview]
Message-ID: <YfmeztkVXwZzAwYe@ravnborg.org> (raw)
In-Reply-To: <4d9a56a7-da25-b411-61cc-372c6fa9011d@tronnes.org>
Hi Noralf,
On Tue, Feb 01, 2022 at 01:58:16PM +0100, Noralf Trønnes wrote:
>
>
> Den 31.01.2022 21.52, skrev Sam Ravnborg:
> > On Mon, Jan 31, 2022 at 09:12:21PM +0100, Javier Martinez Canillas wrote:
> >> There isn't a connector type for display controllers accesed through I2C,
> >> most drivers use DRM_MODE_CONNECTOR_Unknown or DRM_MODE_CONNECTOR_VIRTUAL.
> >>
> >> Add an I2C connector type to match the actual connector.
> >>
> >> As Noralf Trønnes mentions in commit fc06bf1d76d6 ("drm: Add SPI connector
> >> type"), user-space should be able to cope with a connector type that does
> >> not yet understand.
> >>
>
> It turned out that I wasn't entirely correct here, mpv didn't cope with
> unknown types. In the PR to add support Emil Velikov wondered if libdrm
> should handle these connector names:
> https://github.com/mpv-player/mpv/pull/8989#issuecomment-879187711
>
> >> Tested with `modetest -M ssd1307 -c` and shows the connector as unknown-1.
> > I had expected unknown-21??
> >
> >>
> >> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
> > Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
>
> Sam, didn't you and Laurent discuss adding DRM_MODE_CONNECTOR_PANEL for
> such a use case?
You have a splendid memory - yes we did. But no conclusions:
https://lore.kernel.org/dri-devel/?q=DRM_MODE_CONNECTOR_PANEL
As I wrote in another part of this thread(s) - typing the patch is easy.
But I do not understand the userspace implications so I need someone
else to say go.
Sam
next prev parent reply other threads:[~2022-02-01 20:57 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-31 20:12 [PATCH 0/4] drm/tiny: Add driver for Solomon SSD1307 OLED displays Javier Martinez Canillas
2022-01-31 20:12 ` [PATCH 1/4] drm: Add I2C connector type Javier Martinez Canillas
2022-01-31 20:52 ` Sam Ravnborg
2022-01-31 23:26 ` Javier Martinez Canillas
2022-02-01 12:58 ` Noralf Trønnes
2022-02-01 13:06 ` Javier Martinez Canillas
2022-02-01 13:20 ` Noralf Trønnes
2022-02-01 13:55 ` Javier Martinez Canillas
2022-02-01 13:38 ` Simon Ser
2022-02-01 14:20 ` Noralf Trønnes
2022-02-01 20:57 ` Sam Ravnborg [this message]
2022-02-01 22:29 ` Simon Ser
2022-02-02 8:46 ` Javier Martinez Canillas
2022-02-02 9:14 ` Thomas Zimmermann
2022-02-02 9:45 ` Noralf Trønnes
2022-02-02 15:04 ` Pekka Paalanen
2022-02-02 16:00 ` Noralf Trønnes
2022-01-31 20:12 ` [PATCH 2/4] drm/format-helper: Add drm_fb_gray8_to_mono_reversed() Javier Martinez Canillas
2022-02-01 9:59 ` Thomas Zimmermann
2022-02-01 11:13 ` Pekka Paalanen
2022-02-01 11:48 ` Javier Martinez Canillas
2022-03-14 13:40 ` Geert Uytterhoeven
2022-03-14 14:07 ` Javier Martinez Canillas
2022-01-31 20:36 ` [PATCH 0/4] drm/tiny: Add driver for Solomon SSD1307 OLED displays Simon Ser
2022-01-31 20:39 ` Simon Ser
2022-01-31 23:21 ` Javier Martinez Canillas
2022-02-01 8:26 ` Geert Uytterhoeven
2022-02-01 8:34 ` Simon Ser
2022-02-01 8:36 ` Geert Uytterhoeven
2022-02-01 10:08 ` Thomas Zimmermann
2022-02-01 10:11 ` Simon Ser
2022-02-01 10:17 ` Thomas Zimmermann
2022-02-01 8:38 ` Daniel Vetter
2022-02-01 9:49 ` Javier Martinez Canillas
2022-02-01 10:42 ` Pekka Paalanen
2022-02-01 11:07 ` Geert Uytterhoeven
2022-02-02 9:19 ` Pekka Paalanen
2022-02-02 10:55 ` Geert Uytterhoeven
2022-01-31 20:56 ` Sam Ravnborg
2022-01-31 23:37 ` Javier Martinez Canillas
2022-02-01 9:37 ` Andy Shevchenko
2022-02-01 11:31 ` Javier Martinez Canillas
2022-02-01 11:38 ` Geert Uytterhoeven
2022-02-01 13:09 ` Javier Martinez Canillas
2022-02-01 14:14 ` Geert Uytterhoeven
2022-02-01 15:03 ` Javier Martinez Canillas
2022-02-01 20:40 ` Sam Ravnborg
2022-02-02 8:38 ` Javier Martinez Canillas
2022-02-02 11:06 ` Andy Shevchenko
2022-02-02 11:39 ` Javier Martinez Canillas
2022-02-02 11:50 ` Andy Shevchenko
2022-02-02 11:54 ` Javier Martinez Canillas
2022-02-02 12:21 ` Andy Shevchenko
2022-02-01 8:43 ` Geert Uytterhoeven
2022-02-01 9:27 ` Simon Ser
2022-02-01 10:36 ` Javier Martinez Canillas
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