Z8530_INTERRUPT(9) Public Functions Provided 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@lxorguk.ukuu.org.uk>
Author.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 Z8530_INTERRUPT(9)
