Hi,
I'm writing the 2d acceleration on android but I need to access the
internal register
of glamo accelerator. It is possible with the drm interface to access
the interal
2d register?
Michael
Andreas Pokorny wrote:
Hello,
Thank you for your help. We just discovered that the "waits" we had in
drm-tracking are not really necessary. So right now we do not need the
interrupt to update the write pointer. Hopefully I will have a debug
board next time I work on that part.
2009/6/6 Michael Trimarchi <[email protected]>:
What happen if you ack this irq and you take no lock on cmdq_irq, then arrive
another
one and you don't mask and mark it pending.
Yes I should have disabled the interrupt...
[...]
glamo_enable_cmdq_irq(gdrm);
I suppose that here you will do an unmask of the interrupt.
Yes.
[...]
spin_unlock_irqrestore( &gdrm->new_ring_write_lock, flags );
/* We try to make the irq happen somehow :( */
printk(KERN_INFO "[glamo-drm] enabling...\n");
glamo_enable_cmdq_irq(gdrm);
The interrupt is not just umask? So way unmask it again?
If you want and interrupt at each new command in the buffer why you don't
mask
it and ack?
After several trial&error iteratons we had the impression that the
glamo chip needs to
be told again that the IRQ for the CMDQ should be triggered..
