diff options
author | David Brownell <david-b@pacbell.net> | 2008-01-04 12:30:24 -0500 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-02-04 08:16:39 -0500 |
commit | e83aff58bf1b7e6b355a0cfa206e9d3aebe5623f (patch) | |
tree | 0c5e5d990291cdef1e173a1bed74bb8915c67168 /drivers/serial/atmel_serial.c | |
parent | ae9458d6a0956aa21cb49e1251e35a8d4dacbe6e (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')
0 files changed, 0 insertions, 0 deletions