Re: m68k: trying accessing fb memory
angelo <[email protected]>
| Newsgroups | gmane.linux.uclinux.devel |
|---|---|
| Message-ID | <[email protected]> |
Dear Geert, thanks, i tried your solution, works, i am able to write on the lcd video memory using mmap() on /dev/mem, but there is still the issue of refreshing the lcd i am driving. I tried both msync() and munmap(), screen is not updated. But i can see the changes on it if i write just after some chars with "echo" on /dev/fb0. Any suggestion ? Best Regards Angelo >> >> For this reasons, my idea is to setup 2 or 3 ioctl's at driver level: >> >> - one to get memory address (direct memory map) > > That's a bit silly. If your fb_fix_screeninfo.smem_start is correctly filled in, > an application can already mmap /dev/mem using the smem_start offset. > That works even on real Linux with MMU. > > On uClinux, the application can just write to the smem_start address, > without involving mmap(), right? -- _______________________________________________ uClinux-dev mailing list [email protected] http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by [email protected] To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev