[PATCH 1/5] ARM: sa1100: split irq handling for low GPIOs
dbaryshkov at gmail.com
Wed Jan 14 01:36:07 PST 2015
2015-01-14 12:35 GMT+03:00 Linus Walleij <linus.walleij at linaro.org>:
> On Mon, Dec 22, 2014 at 11:05 AM, Dmitry Eremin-Solenikov
> <dbaryshkov at gmail.com> wrote:
>> Low GPIO pins use an interrupt in SC interrupts space. However it's
>> possible to handle them as if all the GPIO interrupts are instead tied
>> to single GPIO handler, which later decodes GEDR register and
>> chain-calls next IRQ handler. So split first 11 interrupts into system
>> part (IRQ_GPIO0_SC - IRQ_GPIO10_SC) which work exactly like the rest of
>> system controller interrupts and real GPIO interrupts
>> (IRQ_GPIO0..IRQ_GPIO10). A single handler sa1100_gpio_handler then
>> decodes and calls next handler.
>> Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov at gmail.com>
> I applied all 5 patches and tested on the Compaq iPAQ H3600
> with some GPIO lines with IRQs and all work as before.
> Tested-by: Linus Walleij <linus.walleij at linaro.org>
> for all 5 patches.
With best wishes
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