linux-kernel - Re: [PATCH v3 00/24] Improve IRQ wake capability reporting and update the cros

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Date: Fri, 16 Feb 2024 12:31:03 +0100
From: "Thierry Reding" <thierry.reding@...il.com>
To: "Mark Hasemeyer" <markhas@...omium.org>, "LKML"
 <linux-kernel@...r.kernel.org>
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Subject: Re: [PATCH v3 00/24] Improve IRQ wake capability reporting and
 update the cros_ec driver to use it

On Tue Dec 26, 2023 at 8:21 PM CET, Mark Hasemeyer wrote:
> Currently the cros_ec driver assumes that its associated interrupt is
> wake capable. This is an incorrect assumption as some Chromebooks use a
> separate wake pin, while others overload the interrupt for wake and IO.
> This patch train updates the driver to query the underlying ACPI/DT data
> to determine whether or not the IRQ should be enabled for wake.
>
> Both the device tree and ACPI systems have methods for reporting IRQ
> wake capability. In device tree based systems, a node can advertise
> itself as a 'wakeup-source'. In ACPI based systems, GpioInt and
> Interrupt resource descriptors can use the 'SharedAndWake' or
> 'ExclusiveAndWake' share types.
>
> Some logic is added to the platform, ACPI, and DT subsystems to more
> easily pipe wakeirq information up to the driver.
>
> Changes in v3:
> -Rebase on linux-next
> -See each patch for patch specific changes
>
> Changes in v2:
> -Rebase on linux-next
> -Add cover letter
> -See each patch for patch specific changes
>
> Mark Hasemeyer (24):
[...]
>   ARM: dts: tegra: Enable cros-ec-spi as wake source
[...]
>   arm64: dts: tegra: Enable cros-ec-spi as wake source
[...]

Both patches applied, thanks.

Thierry

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