z8530_interrupt(9)
NAME
z8530_interrupt - Handle an interrupt from a Z8530
SYNOPSIS
irqreturn_t z8530_interrupt(int irq, void * dev_id);
ARGUMENTS
- irq
- Interrupt number
- dev_id
- The Z8530 device that is interrupting.
DESCRIPTION
A Z85[2]30 device has stuck its hand in the air for attention. We scan
both the channels on the chip for events and then call the channel
specific call backs for each channel that has events. We have to use
callback functions because the two channels can be in different modes.
Locking is done for the handlers. Note that locking is done at the chip
level (the 5uS delay issue is per chip not per channel). c->lock for
both channels points to dev->lock
AUTHOR
- Alan Cox <alan@redhat.com>
- Author.