Re: [Linux-fbdev-devel] fbmem: is bootup logo broken for monochromeLCD ?
From: James Simmons
Date: Mon Nov 20 2006 - 11:43:40 EST
> On 11/17/06, James Simmons <jsimmons@xxxxxxxxxxxxx> 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 ?
Yipes!! Bit reversal. I have never seen that before. Is only the logo
messed up? Slow_imageblit can be called if there is no dword alignment
for the font bitmaps. So the question is do most if not all our fonts
> > 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.
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