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SubjectRe: [PATCH][RESEND] gpio: Emma Mobile GPIO driver V2
On Thu, May 17, 2012 at 4:24 PM, Paul Mundt <> wrote:
> On Thu, May 17, 2012 at 03:22:23PM +0900, Magnus Damm wrote:
>> From: Magnus Damm <>
>> This patch is V2 of the Emma Mobile GPIO driver. This
>> driver is designed to be reusable between multiple SoCs
>> that share the same basic building block, but so far it
>> has only been used on Emma Mobile EV2.
>> Each driver instance handles 32 GPIOs with individually
>> maskable IRQs. The driver operates on two I/O memory
>> ranges and the 32 GPIOs are hooked up to two interrupts.
>> In the case of Emma Mobile EV2 this GPIO building block
>> is used as main external interrupt controller hooking up
>> 159 GPIOS as 159 interrupts via 5 driver instances and
>> 10 interrupts to the GIC and the Cortex-A9 Dual.
>> Signed-off-by: Magnus Damm <>
>> Acked-by: Linus Walleij <>
>> ---
>>  Rafael, can you please pick up?
>>  Changes since V1:
>>  - use inline for private data functions using container_of()
>>  - use BIT(n) instead of 1 << n
>>  - added legacy irq domain support for static mappings
> My distaste for arbitrary static mappings aside, it makes no sense to
> support this as a module if the irq domain can't be cleaned up at
> present.

Good idea. I'll send an incremental fix for this. Thanks!

/ magnus
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