linux-kernel - [PATCH v2 0/3] Fix soc-button-array debounce

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Message-ID: <20250625181342.3175969-1-superm1@kernel.org>
Date: Wed, 25 Jun 2025 13:13:39 -0500
From: Mario Limonciello <superm1@...nel.org>
To: Hans de Goede <hansg@...nel.org>,
	Mika Westerberg <westeri@...nel.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: linux-gpio@...r.kernel.org (open list:GPIO ACPI SUPPORT),
	linux-acpi@...r.kernel.org (open list:GPIO ACPI SUPPORT),
	linux-kernel@...r.kernel.org (open list),
	linux-input@...r.kernel.org (open list:INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN)...),
	Mario Limonciello <mario.limonciello@....com>
Subject: [PATCH v2 0/3] Fix soc-button-array debounce

From: Mario Limonciello <mario.limonciello@....com>

I have some hardware in front of me that uses the soc-button-array
driver but the power button doesn't work.

Digging into it, it's because the ASL prescribes a debounce of 0 for
the power button, but the soc-button-array driver hardcodes 50ms.

Hardcoding it to what the ASL expects the power button works.

I looked at the callpath into the GPIO core and I believe it's
because the debounce value from _CRS is never programmed to the
hardware the way that the GPIO gets setup.

This series add that programming path and then sets the hardcoded
value on on some quirked systems.  Hopefully Hans can confirm this
continues to work on the hardware that he originally developed the
hardcoding for.

---
v2:
 * Add a helper for making ACPI debounce program nonfatal
 * Use a quirk instead of a revert

Mario Limonciello (3):
  gpiolib: acpi: Add a helper for programming debounce
  gpiolib: acpi: Program debounce when finding GPIO
  Input: soc_button_array: Only debounce cherryview and baytrail systems

 drivers/gpio/gpiolib-acpi-core.c      | 25 ++++++++++++++-----------
 drivers/input/misc/soc_button_array.c | 21 ++++++++++++++++++++-
 2 files changed, 34 insertions(+), 12 deletions(-)

-- 
2.43.0