linux-kernel - Re: [PATCH v3 18/24] of: irq: add wake capable bit to of_irq

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Date: Wed, 27 Dec 2023 19:19:57 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Mark Hasemeyer <markhas@...omium.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Sudeep Holla <sudeep.holla@....com>,
	Raul Rangel <rrangel@...omium.org>,
	Tzung-Bi Shih <tzungbi@...nel.org>,
	Frank Rowand <frowand.list@...il.com>,
	Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org
Subject: Re: [PATCH v3 18/24] of: irq: add wake capable bit to
 of_irq_resource()

On Tue, Dec 26, 2023 at 12:21:22PM -0700, Mark Hasemeyer wrote:
> Add wake capability information to the IRQ resource. Wake capability is
> assumed based on conventions provided in the devicetree wakeup-source
> binding documentation. An interrupt is considered wake capable if the
> following are true:
> 1. A wakeup-source property exits in the same device node as the
>    interrupt.
> 2. The IRQ is marked as dedicated by setting its interrupt-name to
>    "wakeup".
> 
> The wakeup-source documentation states that dedicated interrupts can use
> device specific interrupt names and device drivers are still welcome to
> use their own naming schemes. This API is provided as a helper if one is
> willing to conform to the above conventions.
> 
> The ACPI subsystems already provides similar APIs that allow one to
> query the wake capability of an IRQ. This brings closer feature parity
> to the devicetree.

...

> +		u32 irq_flags;
>  		const char *name = NULL;

Don't know if OF style requires reversed xmas tree order. If so, this should be

		const char *name = NULL;
		u32 irq_flags;

Otherwise looks good to me, FWIW,
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

-- 
With Best Regards,
Andy Shevchenko