linux-kernel - Re: [PATCH v9 1/1] gpio: add sloppy logic analyzer using polling

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Date: Fri, 14 Jun 2024 14:14:27 +0200
From: Linus Walleij <linus.walleij@...aro.org>
To: Arnd Bergmann <arnd@...db.de>
Cc: Wolfram Sang <wsa+renesas@...g-engineering.com>, Bartosz Golaszewski <brgl@...ev.pl>, 
	Linux-Renesas <linux-renesas-soc@...r.kernel.org>, Jonathan Corbet <corbet@....net>, 
	Kent Gibson <warthog618@...il.com>, linux-doc@...r.kernel.org, 
	linux-kernel@...r.kernel.org, 
	"open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH v9 1/1] gpio: add sloppy logic analyzer using polling

On Fri, Jun 14, 2024 at 1:59 PM Arnd Bergmann <arnd@...db.de> wrote:

> Of course we don't want to make it a first-class interface
> because of the reasons you explain in the cover letter,
> but it would totally make sense to me to call it a
> debugging feature of libgpio instead of calling it a
> standalone driver.

I second this opinion. The logic analyzer does in my mind
classify as a GPIO debugging feature. Surely someone
debugging anything connected to GPIO, such as a key or
MMC card detect or whatever could use this feature to see
what is going on on that line.

Yours,
Linus Walleij