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Message-ID: <4322f58b-dbeb-b90f-2770-d6881f8005b4@redhat.com>
Date:   Tue, 1 Feb 2022 14:06:07 +0100
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Subject: Re: [PATCH 1/4] drm: Add I2C connector type
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To:     =?UTF-8?Q?Noralf_Tr=c3=b8nnes?= <noralf@tronnes.org>,
        Sam Ravnborg <sam@ravnborg.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>,
        linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Maxime Ripard <maxime@cerno.tech>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>
References: <20220131201225.2324984-1-javierm@redhat.com>
 <20220131201225.2324984-2-javierm@redhat.com> <YfhMESTylI1NTKDg@ravnborg.org>
 <4d9a56a7-da25-b411-61cc-372c6fa9011d@tronnes.org>
From:   Javier Martinez Canillas <javierm@redhat.com>
In-Reply-To: <4d9a56a7-da25-b411-61cc-372c6fa9011d@tronnes.org>
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Hello Noralf,

On 2/1/22 13:58, 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
> 

I see, thanks for the information. What should we do then, just use the type
DRM_MODE_CONNECTOR_Unknown then ?

Best regards,
-- 
Javier Martinez Canillas
Linux Engineering
Red Hat