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SubjectRe: [PATCH v2 3/3] gpiolib: debugfs: identify gpios requested as irq only
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On Wed, May 20, 2015 at 12:30 PM, Grygorii Strashko
<grygorii.strashko@linaro.org> wrote:

> Now many of GPIO drivers implement two interfaces gpiolib and irqchip
> which are essentially orthogonal. So, now GPIO line can be requested
> in three ways:
> 1) As pure GPIO (gpioX_request())
> 2) As pure GPIO IRQ, especially in DT boot case.
> DT:
> interrupt-parent = <&gpio6>;
> interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
> Code:
> platform_get_irq() or of_irq_get()
> request_irq()
> 3) combination of (1) and (2).
>
> And from GPIO debugfs it could be identified when GPIO is
> requested/used or used as IRQ, but there is no way to determine
> when GPIO is requested/used as IRQ only.
>
> Such information is useful for debugging, so update GPIO debugfs code
> to show marker '<irq-only>' for GPIO lines which are requested/used as
> GPIO IRQ only.
>
> After this patch sys/kernel/debug/gpio will produce following output:
> ...
> GPIOs 160-191, platform/4805d000.gpio, gpio:
> gpio-171 ((null) ) in hi IRQ-209 <irq-only>
>
> GPIOs 192-223, platform/48051000.gpio, gpio:
> gpio-203 (vtt_fixed ) out hi
>
> Cc: Johan Hovold <johan@kernel.org>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org>

Patch applied.

Yours,
Linus Walleij


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