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From: Clemens Koller <clemens.koller@anagramm.de>
To: linux-fbdev-devel@lists.sourceforge.net
Cc: Andrew Morton <akpm@linux-foundation.org>,
	adaplas@gmail.com, benh@kernel.crashing.org,
	linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Anton Vorontsov <avorontsov@ru.mvista.com>
Subject: Re: [Linux-fbdev-devel] [PATCH 1/2] fb: add support for foreign endianness
Date: Wed, 20 Feb 2008 16:43:42 +0100	[thread overview]
Message-ID: <47BC4AAE.8020908@anagramm.de> (raw)
In-Reply-To: <18363.31427.989835.105966@cargo.ozlabs.ibm.com>

Paul Mackerras schrieb:
> Andrew Morton writes:
> 
>> Bizarrely, the original author of the patch (Anton) has fallen off the cc. 
>> Could whoever did that please thwap himself?
>>
>> Anyway, my head is now officially spinning.  Did anyone actually have a
>> reason why we shouldn't proceed with Anton's patch?
> 
> I was wondering if it would be sufficient to provide alternative
> versions of fb_readl, fb_writel etc. that do byte-swapping.  That
> would mean that all framebuffers would have to have the same
> endianness, but that would suffice for embedded systems such as
> Anton's and would end up a lot simpler IMHO.

Yes. At least the affected PowerPC platforms can do byte-swapping on
the fly, so this should be sufficient and without performance
penalty, AFAICS.

Regards,

Clemens

  parent reply	other threads:[~2008-02-20 15:44 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-05 15:44 Anton Vorontsov
2008-02-05 19:07 ` Anton Vorontsov
2008-02-15  6:49 ` Andrew Morton
2008-02-15 16:45   ` Anton Vorontsov
2008-02-17  9:44     ` [Linux-fbdev-devel] " Geert Uytterhoeven
2008-02-18  7:18       ` Krzysztof Helt
2008-02-18 17:30         ` Valdis.Kletnieks
2008-02-18 17:37           ` Anton Vorontsov
2008-02-18 23:35           ` Clemens Koller
2008-02-19  0:35             ` Benjamin Herrenschmidt
2008-02-19 11:27               ` Clemens Koller
2008-02-19 12:05                 ` Andrew Morton
2008-02-19 12:22                   ` Clemens Koller
2008-02-20  0:47                   ` Valdis.Kletnieks
2008-02-20  0:50                     ` Benjamin Herrenschmidt
2008-02-20  0:56                   ` Paul Mackerras
2008-02-20 12:18                     ` Anton Vorontsov
2008-02-20 20:38                       ` Benjamin Herrenschmidt
2008-02-21  4:59                       ` Paul Mackerras
2008-02-20 15:43                     ` Clemens Koller [this message]
2008-02-16 11:49 ` Benjamin Herrenschmidt

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