linux-kernel - Re: [PATCH v2 1/3] auxdisplay: Take over maintainership, but in Odd Fixes mode

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Date: Tue, 13 Feb 2024 09:28:35 +0100
From: Thomas Zimmermann <tzimmermann@...e.de>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: linux-kernel@...r.kernel.org,
 Javier Martinez Canillas <javierm@...hat.com>,
 Miguel Ojeda <ojeda@...nel.org>, Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [PATCH v2 1/3] auxdisplay: Take over maintainership, but in Odd
 Fixes mode

Hi

Am 12.02.24 um 17:42 schrieb Andy Shevchenko:
> On Mon, Feb 12, 2024 at 05:33:39PM +0100, Thomas Zimmermann wrote:
>> (cc'ing Javier Martinez Canillas)
>>
>> Hi
>>
>> Am 12.02.24 um 14:23 schrieb Andy Shevchenko:
>>> I have no time for this, but since it looks like I'm the main
>>> contributor for the last few years to the subsystem, I'll take
>>> it for now. Geert agreed to help me with as a designated reviwer.
>>> Let's see how it will go...
>> A few days ago, I talked to Javier about how auxdisplay is a hotchpodge of
>> various drivers that seem to belong into other subsystems. Could we attempt
>> to move all drivers into other places and then remove the auxdisplay
>> subsystem?
> Can you be more precise on how it can be done? We have at least two clusters of
> the displays: line-display and HD44780-based ones. Moreover, the latter might
> use the former in the future (in some cases).

I see. Taking a closer look, it's not as simple as I implied.

We noticed that cfag1286bfb and ht16k33 are fbdev-based drivers. They 
seem to belong into video/fbdev. But OTOH ht16k33 appears to drive 
14-segment displays and fbdev appears to be an odd choice for such 
devices. And as Javier already noted, we wondered if these charlcd 
displays aren't just a special case of TTYs.

Best regards
Thomas

>

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)