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

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Date:	Wed, 22 Nov 2006 21:04:50 +0000 (GMT)
From:	James Simmons <jsimmons@...radead.org>
To:	Franck Bui-Huu <vagabon.xyz@...il.com>
cc:	Andrew Morton <akpm@...l.org>,
	Linux Fbdev development list 
	<linux-fbdev-devel@...ts.sourceforge.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [Linux-fbdev-devel] fbmem: is bootup logo broken for monochrome
 LCD ?


> James Simmons wrote:
> > Lets look at the new code that I have done with your above parameters.
> >
> >        for (i = image->height; i--; ) {
> >                shift = val = 0;
> >                n = image->width;
> >                dst = (u32 __iomem *) dst1;
> >
> > 		while (n--) {
> > 			if (!s) { src++; s = 32; }
> > 			s -= 1;
> > 			color = (swapb32p(src) & (1 << s)) ? 1 : 0;

Replace the below line in my patch I sent 

> > 			val |= color << shift;

with
			val <<= shift;
			val |= color;

> > 		       /* Did the bitshift spill bits to the next long? */
> >                        if (shift >= 31) {
> >                                FB_WRITEL(val, dst++);
> >                                val = (shift == 31) ? 0 :(color >> (32 - shift));
> >                        }
> >                        shift += 1;
> >                        shift &= (32 - 1);
> >                }
> >
> >                [ ...]

Let me know if that works.

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