On Dec 19, 3:00 pm, Geert Uytterhoeven <[EMAIL PROTECTED]> wrote: > On Wed, 19 Dec 2007, [EMAIL PROTECTED] wrote: > > I'm running a 2.6.10 kernel on a Coldfire (M5484) and I'm trying to > > get some frame buffer graphics going. The video chip I'm using is a > > Epson S1D13a04 and there was actually a driver for Linux kernel 2.6.8 > > from Epson that I was able to port to my kernel. Thought life was good > > but I have yet to get anything on the screen at all. My first attempt > > is listed below. The problem occurs on the memory map (mmap) command. > > Thought the /dev/fb0 device opens and the call to ioctl returns valid > > information, when I call mmap to set up the memory the call fails > > (returns -1). The device resides at physical address 0x44040000. > > screensize = vinfo.xres * vinfo.yres * vinfo.bits_per_pixel / 8; > > fbp = mmap((caddr_t)0, screensize, PROT_READ|PROT_WRITE, MAP_SHARED, > > fbfd, 0); > > I guess it fails because screensize is not a multiple of the page size? > > For testing frame buffer devices, you can always try fbtest (CVS module > FBdev/utlilities/fbtest (yes, spelling typo in the path name ;-) from > project linux-fbdev.sf.net, > cfr.http://linux-fbdev.sourceforge.net/develop.html). > > Gr{oetje,eeting}s, > > Geert > > -- > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [EMAIL PROTECTED] > > In personal conversations with technical people, I call myself a hacker. But > when I'm talking to journalists I just say "programmer" or something like > that. > -- Linus Torvalds > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Thanks Geert. Kind of a silly thing for me to miss.... I'll look into the fbtest stuff. Hopefully that will clear the fog for me a little.... jk -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
