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]
