Control: reassign -1 linux
Mathieu Malaterre, on Mon 05 Sep 2016 07:26:15 +0200, wrote:
> Frame buffer device information:
> Name : OFfb ATY,RockHo
> Address : 0x9c008000
> Size : 614400
> Type : PACKED PIXELS
> Visual : PSEUDOCOLOR
> Frame buffer device information:
> Name : ATI Radeon 5962
> Address : 0x98000000
> Size : 33554432
> Type : PACKED PIXELS
> Visual : PSEUDOCOLOR
Ok, so they look very similar. However, one thing that is different
is the way they handle FBIOPUTCMAP, i.e. offb_setcolreg(). ATY,RockHo
is not actually recognized by the offb driver, and it reverts to
"cmap_simple", which may not actually be the proper way for RockHo, and
it might very well be simply setting rgb in the wrong order. You could
try to patch this over in there: turn
case cmap_simple:
writeb(regno, par->cmap_adr);
writeb(red, par->cmap_data);
writeb(green, par->cmap_data);
writeb(blue, par->cmap_data);
break;
into
case cmap_simple:
writeb(regno, par->cmap_adr);
writeb(blue, par->cmap_data);
writeb(green, par->cmap_data);
writeb(red, par->cmap_data);
break;
I really don't think it's a bterm bug, its only change of behavior is
when type or visual changes, which is not the case. It however does
use FBIOPUTCMAP, whose implementation does seem suspicious in offb for
RockHo.
Samuel
