From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH V2] video: implement a simple framebuffer driver
Date: Tue, 30 Apr 2013 07:28:35 +0000 [thread overview]
Message-ID: <517F72A3.6010009@ti.com> (raw)
In-Reply-To: <2863648.BDvrAG5uPk@flatron>
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On 04/30/2013 12:15 AM, Tomasz Figa wrote:
> Well, there is also at least one legitimate use case for this driver.
>
> I believe there exist embedded devices on which there is no need to
> dynamically control the framebuffer. It needs one time initialization,
> usually in bootloader, and then it is used as is, using constant
> parameters as long as the system is running.
>
> I doubt there is a need for any KMS (or any other control) driver for such
> devices - dumb framebuffer driver would be everything needed in such case.
Isn't there usually the need to power off the hardware when
blanking/suspending?
Tomi
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From: tomi.valkeinen@ti.com (Tomi Valkeinen)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2] video: implement a simple framebuffer driver
Date: Tue, 30 Apr 2013 10:28:35 +0300 [thread overview]
Message-ID: <517F72A3.6010009@ti.com> (raw)
In-Reply-To: <2863648.BDvrAG5uPk@flatron>
On 04/30/2013 12:15 AM, Tomasz Figa wrote:
> Well, there is also at least one legitimate use case for this driver.
>
> I believe there exist embedded devices on which there is no need to
> dynamically control the framebuffer. It needs one time initialization,
> usually in bootloader, and then it is used as is, using constant
> parameters as long as the system is running.
>
> I doubt there is a need for any KMS (or any other control) driver for such
> devices - dumb framebuffer driver would be everything needed in such case.
Isn't there usually the need to power off the hardware when
blanking/suspending?
Tomi
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From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: Tomasz Figa <tomasz.figa@gmail.com>
Cc: linux-fbdev@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
Stephen Warren <swarren@wwwdotorg.org>,
devicetree-discuss@lists.ozlabs.org,
Rob Clark <robclark@gmail.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Olof Johansson <olof@lixom.net>,
Andrew Morton <akpm@linux-foundation.org>,
linux-arm-kernel@lists.infradead.org,
linux-rpi-kernel@lists.infradead.org
Subject: Re: [PATCH V2] video: implement a simple framebuffer driver
Date: Tue, 30 Apr 2013 10:28:35 +0300 [thread overview]
Message-ID: <517F72A3.6010009@ti.com> (raw)
In-Reply-To: <2863648.BDvrAG5uPk@flatron>
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On 04/30/2013 12:15 AM, Tomasz Figa wrote:
> Well, there is also at least one legitimate use case for this driver.
>
> I believe there exist embedded devices on which there is no need to
> dynamically control the framebuffer. It needs one time initialization,
> usually in bootloader, and then it is used as is, using constant
> parameters as long as the system is running.
>
> I doubt there is a need for any KMS (or any other control) driver for such
> devices - dumb framebuffer driver would be everything needed in such case.
Isn't there usually the need to power off the hardware when
blanking/suspending?
Tomi
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next prev parent reply other threads:[~2013-04-30 7:28 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
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 [this message]
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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