Re: [PATCH] pinctrl: renesas: rzg2l: Always call rzg2l_gpio_request() for interrupt pins

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

Hi Prabhakar,

On Thu, Oct 3, 2024 at 3:16 PM Prabhakar <prabhakar.csengg@xxxxxxxxx> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> Ensure that rzg2l_gpio_request() is called for GPIO pins configured as
> interrupts, regardless of whether they are muxed in u-boot. This
> guarantees that the pinctrl core is aware of the GPIO pin usage via
> pinctrl_gpio_request(), which is invoked through rzg2l_gpio_request().
>
> Fixes: 2fd4fe19d0150 ("pinctrl: renesas: rzg2l: Configure interrupt input mode")
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Thanks for your patch!

> Output before this patch on G2L/SMARC:
> root@smarc-rzg2l:~# cat /sys/kernel/debug/pinctrl/11030000.pinctrl-pinctrl-rzg2l/pinmux-pins | grep P2_1
> pin 17 (P2_1): UNCLAIMED
>
> Output after this patch G2L/SMARC:
> root@smarc-rzg2l:~# cat /sys/kernel/debug/pinctrl/11030000.pinctrl-pinctrl-rzg2l/pinmux-pins | grep P2_1
> pin 17 (P2_1): GPIO 11030000.pinctrl:529

Just wondering: is this restored to UNCLAIMED after releasing the
interrupt (i.e. after unbinding the ADV7535 driver)?

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
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                                -- Linus Torvalds