linux-kernel - Re: No more new fbdev drivers, please

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Message-ID: <CACvgo50PpEG3CVBQdMuXEg9TG+mY_Kxnp3OOHMdZ-hxr3Mok5Q@mail.gmail.com>
Date:	Sun, 27 Sep 2015 17:08:58 +0100
From:	Emil Velikov <emil.l.velikov@...il.com>
To:	Noralf Trønnes <noralf@...nnes.org>
Cc:	Tomi Valkeinen <tomi.valkeinen@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-fbdev <linux-fbdev@...r.kernel.org>,
	DRI Development <dri-devel@...ts.freedesktop.org>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Teddy Wang <teddy.wang@...iconmotion.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Dave Airlie <airlied@...hat.com>,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: Re: No more new fbdev drivers, please

Hi all,

On 27 September 2015 at 14:09, Noralf Trønnes <noralf@...nnes.org> wrote:
>
> Den 24.09.2015 14:27, skrev Tomi Valkeinen:
>>
>> Hi all,
>>
>> fbdev is (more or less) maintained, but it's a deprecated framework. All
>> new Linux display drivers should be done on DRM.
>>
>> So let's not add any more new fbdev drivers.
>>
>> I will continue to maintain the current fbdev drivers, and I don't mind
>> adding some new features to those current drivers, as long as the amount
>> of code required to add the features stays sensible.
>>
>> I see we have three fbdev drivers in staging: xgifb, fbtft and sm750fb,
>> and the question is what to do with those.
>>
>> xgifb was added in 2010, and is still in staging.
>>
>> fbtft looks like maybe some kind of framework on top of fbdev, with
>> fbtft specific subdrivers... I didn't look at it in detail, but my gut
>> says "never".
>
>
> I have done some work [1] to try and make fbtft look more like the rest
> of the kernel (doc [2]), but that work will result in an almost complete
> rewrite of fbtft.
>From a very quick skim fbtft looks pretty much like drm/panel. We
presently have 30+ 'simple' dsi panels, plus a bunch of spi ones. Have
you had a look at these ?

Cheers,
Emil
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