[PATCH] pinctrl: st: don't specify default interrupt trigger
Linus Walleij
linus.walleij at linaro.org
Sun Oct 23 16:30:13 PDT 2016
On Tue, Oct 18, 2016 at 9:16 AM, <patrice.chotard at st.com> wrote:
> From: Patrice Chotard <patrice.chotard at st.com>
>
> Thanks to 332e99d5ae4 which now alerts of default
> trigger usage when configuring interrupts.
>
> Signed-off-by: Patrice Chotard <patrice.chotard at st.com>
Patch applied with Peter's ACK.
Pls also look into the following: __gpio_irq_handler seems to be
doing some stuff per-IRQ that only pertains to edge-triggered IRQs.
Normally that should be handled by:
- Setting default handler to handle_bad_irq()
- Setting handler to handle_edge_irq() or handle_level_irq() in .set_type()
- Implement .irq_ack() on the irqchip and handle the edge-specific ACKing
there.
See for example drivers/gpio/gpio-pl061.c.
I am not *sure* this applies to pinctrl-st.c but please check if it provides
more elegant code. Notmally the .irq_ack() is for edge detection hardware
that allows ACKing the ege IRQ in a separate register and after that we
can raise another edge IRQ while the current IRQ is being handled.
Yours,
Linus Walleij
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