Ian Lepore
63cdf42e8c
Add userland access to at91 gpio functionality via ioctl calls. Also, ...
add the ability for userland to be notified of changes on gpio pins via
a select(2)/read(2) interface.
Change the interrupt handler from filtered to threaded.
Because of the uiomove() calls in the new interface, change locking from
standard mutex to sx.
Add / restore the at91_gpio_high_z() function.
Reviewed by: imp (long ago)
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63cdf42e8c