danatel danatel - 21 days ago 5
Linux Question

Direct access to linux framebuffer - copyarea

I want to move very quickly a rectangle over a framebuffer in an embedded linux application. I have found that the function

cfb_copyarea
may be useful. But I cannot find any ioctl over the /dev/fb device to call the function. Or can this function be called directly?

Answer Source

As far as I know after a few days of research, there is no ioctl for invoking this function. I have to write my own system call preferrably in a kernel module. Or copy the algorithm the from kernel source and use it in the user space via nmaped memory.