linux-kernel - Re: [PATCH v2 1/1] gpio-f7188x: fix base values conflicts with other gpio pins

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Message-ID: <CACRpkdZY_azRbk8TW8r7JG=TqGLOSHCt8gyk3p5NE57tkxANcQ@mail.gmail.com>
Date:   Tue, 30 May 2023 13:40:06 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     simon.guinot@...uanux.org
Cc:     xingtong_wu@....com, brgl@...ev.pl, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, henning.schild@...mens.com,
        xingtong.wu@...mens.com
Subject: Re: [PATCH v2 1/1] gpio-f7188x: fix base values conflicts with other
 gpio pins

On Mon, May 29, 2023 at 3:56 PM <simon.guinot@...uanux.org> wrote:

> This way the assignation would be dynamic and the pin numbers found in
> controller datasheet would be meaningful as well.

I always had in my mind that this is what you should use the
.dbg_show() callback in struct gpio_chip for.

It is for debugging, not ABI and cross-referencing datasheets is definitely
debugging, so use that and look in /proc/sys/kernel/debug/gpio
for the data you want for cross-referencing.

Yours,
Linus Walleij