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authorDavid Brownell <david-b@pacbell.net>2008-01-04 12:30:24 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-02-04 08:16:39 -0500
commite83aff58bf1b7e6b355a0cfa206e9d3aebe5623f (patch)
tree0c5e5d990291cdef1e173a1bed74bb8915c67168 /drivers/serial/atmel_serial.c
parentae9458d6a0956aa21cb49e1251e35a8d4dacbe6e (diff)
[ARM] 4739/1: at91sam9263: make gpio bank C and D irqs work
On the at91sam9263, IRQs for GPIO banks C and D don't currently work. This is because banks C, D, and E share one clock and toplevel IRQ, but the AT91 code setting up and handling GPIO IRQs expects no sharing. This patch: - Fixes GPIO IRQ setup and handling to cope with GPIO banks that are shared like on sam9263 chips, by setting up a list of those banks and making the IRQ dispatching logic scan that list. - Precomputes the address of each bank's registers, saving it with other per-bank data so that it no longer needs to be constantly recomputed during IRQs and other GPIO operations. That shrinks hot-path code, while helping the GPIO bank irq updates. - Fixes a minor bug where IRQ_TYPE_NONE was wrongly rejected (it just means "use the default", which is "both edges" here). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/serial/atmel_serial.c')
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