linux-kernel - Re: [Linux-fbdev-devel] fbmem: is bootup logo broken for monochrome LCD ?

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Date:	Fri, 17 Nov 2006 21:42:50 +0100
From:	"Franck Bui-Huu" <vagabon.xyz@...il.com>
To:	"James Simmons" <jsimmons@...radead.org>
Cc:	"Linux Fbdev development list" 
	<linux-fbdev-devel@...ts.sourceforge.net>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Andrew Morton" <akpm@...l.org>
Subject: Re: [Linux-fbdev-devel] fbmem: is bootup logo broken for monochrome LCD ?

On 11/17/06, James Simmons <jsimmons@...radead.org> wrote:
>
> Are those actually numbers? If they are the problem isn't byte reversal
> but bit shifting.
>
> 1010100 = 54
> 0101010 = 2A

It's not byte reversal, but _bits_ of each bytes have been inversed
(bit7->bit0, bit6->bit1, bit5->bit2, bit4->bit3, bit3->bit4, ...)
after calling slow_imageblit(). Is it something expected ?

> I really don't understand why fbmem.c has its own routines to handle the logo for the color > map. I can set creating a fbcmap and calling fb_set_cmap instead.

Unfortunately I cannot help you on this point...

> That will be a  separte patch.
>

Thanks
-- 
               Franck
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