linux-kernel - Re: [PATCH v1 1/4] fbtft: Unorphan the driver

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Message-ID: <CAMuHMdXnn+JcyMAV_Vbb4Yj8hJmae=Snc2R2fLviq67UYXg7Ew@mail.gmail.com>
Date:   Tue, 1 Feb 2022 18:00:53 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Thomas Zimmermann <tzimmermann@...e.de>
Cc:     Javier Martinez Canillas <javierm@...hat.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Andy Shevchenko <andy@...nel.org>,
        Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
        Michael Hennerich <michael.hennerich@...log.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Helge Deller <deller@....de>, linux-staging@...ts.linux.dev,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Carlis <zhangxuezhi1@...ong.com>,
        Lee Jones <lee.jones@...aro.org>,
        Heiner Kallweit <hkallweit1@...il.com>
Subject: Re: [PATCH v1 1/4] fbtft: Unorphan the driver

Hi Thomas,

On Tue, Feb 1, 2022 at 5:16 PM Thomas Zimmermann <tzimmermann@...e.de> wrote:
> Am 31.01.22 um 11:18 schrieb Javier Martinez Canillas:
> > Another thing that's missing is a DRM_MODE_CONNECTOR_I2C, because I used for
> > now a DRM_MODE_CONNECTOR_Unknown.
>
> That might have implications on userspace. Maybe ask around. (Not that
> we actually run userspace on the device).

Looking at the list of connector types (and wondering if we're gonna
need more when converting existing fbdev drivers to drm drivers),
there seem to be two different families of connector types, for
  1. transports between CRTC and display (e.g. VGA, DVID, HDMI),
  2. transports between CPU and CRTC (e.g. SPI, possibly USB, and
     the proposed I2C)?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-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