Nate Pletcher wrote:
> ... Do I need to register a handler for the SIU
> interrupt for the CPM and then another handler for the individual IDMA
> interrupt from the CPM?
All you need to do is use cpm_install_handler() for the IDMA interrupt.
> The interrupt hardware on the 8xx is multilevel (CPM interrupts
> multiplexed into SIU) so it seems that both functions would be
> necessary.
The cpm initialization installs the SIU interrupt handler, so don't
worry about that one.
> .... What do I need to do myself and what is
> provided by the request_/free_irq interface?
For your IDMA device all you need to do is
cpm_install_handler()/cpm_free_handler().
-- Dan
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