Re: Vertical retrace interrupts?

On Fri, 2003-01-31 at 19:24, Michel Dänzer wrote:

You don't need X to use the DRM, just some privileged client to
initialize it.

You're right.  I just realized that since DRM already has an interrupt
handler, it is unwise for fbdev to install its own interrupt handler
too, as this will fatally lock up the machine when DRM and fbdev are
loaded simultaneously.

So, how about this?  Let fbdev have its own vblank ioctl, but for fbdev
drivers with a DRM counterpart, fbdev will just call the DRM
wait_vblank() and send_vbl_signals() functions.   Do you think this is
doable, I haven't examined the code thoroughly?  

The main goal is too avoid having 2 independent interrupt handlers for
one device.

Tony 
 




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