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From: Cedric Le Goater <clg@fr.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v2] offb: make the screen properties endian safe
Date: Sat, 23 Nov 2013 18:38:40 +0100	[thread overview]
Message-ID: <5290E820.2080809@fr.ibm.com> (raw)
In-Reply-To: <1385063848.4882.6.camel@pasglop>

On 11/21/2013 08:57 PM, Benjamin Herrenschmidt wrote:
> On Thu, 2013-11-21 at 16:45 +0100, Cedric Le Goater wrote:
>>>  - fbdev *generally* assume native endian framebuffer, but of course
>>> under qemu today, the adapter will use a big endian frame buffer
>>> aperture. You can compile in support for foreign endian but I don't know
>>> how that actually works.
>>
>> OK. I will see how I can extend the tests. But, are you suggesting I should
>> be using the foreign endian framework for the frame buffer ? 
> 
> Well, if it works ... did you try 16 and 32bpp ?

So, 32bpp "works" but 16 is broken ... I guess my palette fix is just a lucky
hack and I need to dig deeper in fb code to have a better understanding of
the color map. 

I should have provided you two patches in the first place. Do you want the 
device tree data fixes for the frame buffer screen properties ? It helps to 
have a display for little endian guests even if the colors are wrong.

Thanks,

C.

  reply	other threads:[~2013-11-23 17:38 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-30 16:14 [PATCH] offb: make the screen properties endian safe Cédric Le Goater
2013-10-31  2:08 ` Benjamin Herrenschmidt
2013-10-31  9:36   ` [PATCH v2] " Cédric Le Goater
2013-11-20 22:50     ` Benjamin Herrenschmidt
2013-11-21 15:45       ` Cedric Le Goater
2013-11-21 19:57         ` Benjamin Herrenschmidt
2013-11-23 17:38           ` Cedric Le Goater [this message]
2013-11-23 21:04             ` Benjamin Herrenschmidt
2013-12-04 16:47               ` Cedric Le Goater
2013-12-04 16:49               ` [PATCH v3 1/2] offb: little endian fixes Cédric Le Goater
2013-12-04 16:49               ` [PATCH v3 2/2] offb: add palette hack for little endian Cédric Le Goater

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