linux-kernel - Re: [PATCH v10 05/11] regmap: irq: Add support for chips without separate IRQ status

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Message-ID: <aDmKcNez0Bj41Tcv@finisterre.sirena.org.uk>
Date: Fri, 30 May 2025 11:37:36 +0100
From: Mark Brown <broonie@...nel.org>
To: Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>
Cc: Lee Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Kamel Bouhara <kamel.bouhara@...tlin.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Uwe Kleine-König <ukleinek@...nel.org>,
	Michael Walle <mwalle@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Danilo Krummrich <dakr@...nel.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-input@...r.kernel.org, linux-pwm@...r.kernel.org,
	andriy.shevchenko@...el.com,
	Grégory Clement <gregory.clement@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v10 05/11] regmap: irq: Add support for chips without
 separate IRQ status

On Fri, May 30, 2025 at 12:00:13PM +0200, Mathieu Dubois-Briand wrote:
> Some GPIO chips allow to rise an IRQ on GPIO level changes but do not
> provide an IRQ status for each separate line: only the current gpio
> level can be retrieved.
> 
> Add support for these chips, emulating IRQ status by comparing GPIO
> levels with the levels during the previous interrupt.

Please do not submit new versions of already applied patches, please
submit incremental updates to the existing code.  Modifying existing
commits creates problems for other users building on top of those
commits so it's best practice to only change pubished git commits if
absolutely essential.

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