i have a question about:ppc pci and frame_buffer
利平 张
cmoszhang at yahoo.com.cn
Thu Jul 26 17:58:04 EST 2007
now i have a question:
i know ppc is big_endian and pci bus is little_endian.i made a graphics pci card use big_endian.
when i use graphics card to show QT 's picture through VGA ,the color is not what i wanted, it's inversed ,others are in right position.
here below is what i want :
#################################################
0..................7 8............15 16..............24 25.................31
B G R TRANS
now it is this:
#################################################
0..................7 8............15 16..............24 25.................31
TRANS R G B
#################################################
through mmap, the ppc display the screen color through direct pci bus control ,how can i change it??
change kernel?? (i don't know where to change)
or change others??
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