From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH V2] video: implement a simple framebuffer driver
Date: Mon, 29 Apr 2013 22:04:20 +0000 [thread overview]
Message-ID: <201304300004.20320.arnd@arndb.de> (raw)
In-Reply-To: <6607610.omg016OAvj@avalon>
On Monday 29 April 2013, Laurent Pinchart wrote:
> On Monday 29 April 2013 23:31:30 Tomasz Figa wrote:
>
> > Good point. Stephen, would it be a problem to make this a KMS driver
> > instead? Old fbdev API could be emulated on top of it, until it goes out
> > of use, couldn't it?
>
> There's already an fbdev emulation layer in KMS, for such a simple use case it
> will work fine.
I suggested the same to Stephen when he first brought up this driver.
Unfortunately his attempt to create a simple KMS driver resulted in a
significantly larger driver than the one he did for the framebuffer
interface. This means that either Stephen did something really wrong
in his attempt, or the KMS interface isn't as good as it should be
if we want to move people away from frame buffer drivers.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2] video: implement a simple framebuffer driver
Date: Tue, 30 Apr 2013 00:04:20 +0200 [thread overview]
Message-ID: <201304300004.20320.arnd@arndb.de> (raw)
In-Reply-To: <6607610.omg016OAvj@avalon>
On Monday 29 April 2013, Laurent Pinchart wrote:
> On Monday 29 April 2013 23:31:30 Tomasz Figa wrote:
>
> > Good point. Stephen, would it be a problem to make this a KMS driver
> > instead? Old fbdev API could be emulated on top of it, until it goes out
> > of use, couldn't it?
>
> There's already an fbdev emulation layer in KMS, for such a simple use case it
> will work fine.
I suggested the same to Stephen when he first brought up this driver.
Unfortunately his attempt to create a simple KMS driver resulted in a
significantly larger driver than the one he did for the framebuffer
interface. This means that either Stephen did something really wrong
in his attempt, or the KMS interface isn't as good as it should be
if we want to move people away from frame buffer drivers.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Laurent Pinchart
<laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
Tomasz Figa <tomasz.figa-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Rob Clark <robclark-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH V2] video: implement a simple framebuffer driver
Date: Tue, 30 Apr 2013 00:04:20 +0200 [thread overview]
Message-ID: <201304300004.20320.arnd@arndb.de> (raw)
In-Reply-To: <6607610.omg016OAvj@avalon>
On Monday 29 April 2013, Laurent Pinchart wrote:
> On Monday 29 April 2013 23:31:30 Tomasz Figa wrote:
>
> > Good point. Stephen, would it be a problem to make this a KMS driver
> > instead? Old fbdev API could be emulated on top of it, until it goes out
> > of use, couldn't it?
>
> There's already an fbdev emulation layer in KMS, for such a simple use case it
> will work fine.
I suggested the same to Stephen when he first brought up this driver.
Unfortunately his attempt to create a simple KMS driver resulted in a
significantly larger driver than the one he did for the framebuffer
interface. This means that either Stephen did something really wrong
in his attempt, or the KMS interface isn't as good as it should be
if we want to move people away from frame buffer drivers.
Arnd
next prev parent reply other threads:[~2013-04-29 22:04 UTC|newest]
Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-04 2:39 [PATCH V2] video: implement a simple framebuffer driver Stephen Warren
2013-04-04 2:39 ` Stephen Warren
2013-04-04 2:39 ` Stephen Warren
2013-04-09 0:16 ` Andrew Morton
2013-04-09 0:16 ` Andrew Morton
2013-04-09 0:16 ` Andrew Morton
2013-04-09 3:16 ` Stephen Warren
2013-04-09 3:16 ` Stephen Warren
2013-04-09 3:16 ` Stephen Warren
2013-04-09 8:08 ` Geert Uytterhoeven
2013-04-09 8:08 ` Geert Uytterhoeven
2013-04-09 8:08 ` Geert Uytterhoeven
2013-04-11 9:56 ` Laurent Pinchart
2013-04-11 9:56 ` Laurent Pinchart
2013-04-11 9:56 ` Laurent Pinchart
2013-04-11 16:06 ` Stephen Warren
2013-04-11 16:06 ` Stephen Warren
2013-04-11 16:06 ` Stephen Warren
2013-04-11 20:06 ` Laurent Pinchart
2013-04-11 20:06 ` Laurent Pinchart
2013-04-11 20:06 ` Laurent Pinchart
2013-04-11 20:38 ` Stephen Warren
2013-04-11 20:38 ` Stephen Warren
2013-04-11 20:38 ` Stephen Warren
2013-04-29 20:56 ` Laurent Pinchart
2013-04-29 20:56 ` Laurent Pinchart
2013-04-29 20:56 ` Laurent Pinchart
2013-04-29 21:15 ` Tomasz Figa
2013-04-29 21:15 ` Tomasz Figa
2013-04-29 21:15 ` Tomasz Figa
2013-04-29 21:20 ` Laurent Pinchart
2013-04-29 21:20 ` Laurent Pinchart
2013-04-29 21:20 ` Laurent Pinchart
2013-04-29 21:31 ` Tomasz Figa
2013-04-29 21:31 ` Tomasz Figa
2013-04-29 21:31 ` Tomasz Figa
2013-04-29 21:40 ` Laurent Pinchart
2013-04-29 21:40 ` Laurent Pinchart
2013-04-29 21:40 ` Laurent Pinchart
2013-04-29 22:04 ` Arnd Bergmann [this message]
2013-04-29 22:04 ` Arnd Bergmann
2013-04-29 22:04 ` Arnd Bergmann
2013-04-29 22:23 ` Laurent Pinchart
2013-04-29 22:23 ` Laurent Pinchart
2013-04-29 22:23 ` Laurent Pinchart
2013-04-29 22:40 ` Olof Johansson
2013-04-29 22:40 ` Olof Johansson
2013-04-29 22:40 ` Olof Johansson
2013-04-30 9:50 ` Laurent Pinchart
2013-04-30 9:50 ` Laurent Pinchart
2013-04-30 9:50 ` Laurent Pinchart
2013-05-02 18:25 ` Stephen Warren
2013-05-02 18:25 ` Stephen Warren
2013-05-02 18:25 ` Stephen Warren
2013-05-02 18:35 ` Geert Uytterhoeven
2013-05-02 18:35 ` Geert Uytterhoeven
2013-05-02 18:35 ` Geert Uytterhoeven
2013-05-03 10:06 ` Laurent Pinchart
2013-05-03 10:06 ` Laurent Pinchart
2013-05-03 10:06 ` Laurent Pinchart
2013-05-07 21:33 ` Andrew Morton
2013-05-07 21:33 ` Andrew Morton
2013-05-07 21:33 ` Andrew Morton
2013-05-08 2:36 ` Stephen Warren
2013-05-08 2:36 ` Stephen Warren
2013-05-08 2:36 ` Stephen Warren
2013-05-08 19:28 ` Olof Johansson
2013-05-08 19:28 ` Olof Johansson
2013-05-08 19:28 ` Olof Johansson
2013-05-08 20:58 ` Rob Landley
2013-05-08 20:58 ` Rob Landley
2013-05-08 20:58 ` Rob Landley
2013-04-30 7:28 ` Tomi Valkeinen
2013-04-30 7:28 ` Tomi Valkeinen
2013-04-30 7:28 ` Tomi Valkeinen
2013-04-11 10:42 ` Geert Uytterhoeven
2013-04-11 10:42 ` Geert Uytterhoeven
2013-04-11 10:42 ` Geert Uytterhoeven
2013-04-11 16:10 ` Stephen Warren
2013-04-11 16:10 ` Stephen Warren
2013-04-11 16:10 ` Stephen Warren
2013-04-30 7:27 ` Tomi Valkeinen
2013-04-30 7:27 ` Tomi Valkeinen
2013-04-30 7:27 ` Tomi Valkeinen
2013-04-30 10:28 ` Arnd Bergmann
2013-04-30 10:28 ` Arnd Bergmann
2013-04-30 10:28 ` Arnd Bergmann
2013-04-30 11:42 ` Laurent Pinchart
2013-04-30 11:42 ` Laurent Pinchart
2013-04-30 11:42 ` Laurent Pinchart
2013-04-30 11:48 ` Tomi Valkeinen
2013-04-30 11:48 ` Tomi Valkeinen
2013-04-30 11:48 ` Tomi Valkeinen
2013-04-30 11:49 ` Laurent Pinchart
2013-04-30 11:49 ` Laurent Pinchart
2013-04-30 11:49 ` Laurent Pinchart
2013-04-30 11:46 ` Tomi Valkeinen
2013-04-30 11:46 ` Tomi Valkeinen
2013-04-30 11:46 ` Tomi Valkeinen
2013-05-03 5:40 ` Dave Airlie
2013-05-03 5:40 ` Dave Airlie
2013-05-03 5:40 ` Dave Airlie
2013-04-30 7:39 ` Tomi Valkeinen
2013-04-30 7:39 ` Tomi Valkeinen
2013-04-30 7:39 ` Tomi Valkeinen
2013-04-30 10:34 ` Arnd Bergmann
2013-04-30 10:34 ` Arnd Bergmann
2013-04-30 10:34 ` Arnd Bergmann
2013-04-30 14:38 ` Re[2]: [PATCH V2] video: implement a simple f =?UTF-8?B?cmFtZWJ1ZmZlciBkc Alexander Shiyan
2013-04-30 14:38 ` Re[2]: [PATCH V2] video: implement a simple framebuffer driver Alexander Shiyan
2013-04-30 14:38 ` Alexander Shiyan
2013-04-30 15:07 ` Arnd Bergmann
2013-04-30 15:07 ` Arnd Bergmann
2013-04-30 15:07 ` Arnd Bergmann
2013-05-18 10:29 ` Alexandre Courbot
2013-05-18 10:29 ` Alexandre Courbot
2013-05-18 10:29 ` Alexandre Courbot
2013-05-20 15:25 ` Stephen Warren
2013-05-20 15:25 ` Stephen Warren
2013-05-20 15:25 ` Stephen Warren
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