linux-kernel - [PATCH] gpiolib: acpi: Add a ignore wakeup quirk for Clevo NL5xNU

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Message-Id: <20230322121547.14997-1-wse@tuxedocomputers.com>
Date:   Wed, 22 Mar 2023 13:15:47 +0100
From:   Werner Sembach <wse@...edocomputers.com>
To:     Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Werner Sembach <wse@...edocomputers.com>,
        linux-gpio@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] gpiolib: acpi: Add a ignore wakeup quirk for Clevo NL5xNU

commit 1796f808e4bb ("HID: i2c-hid: acpi: Stop setting wakeup_capable")
changed the policy such that I2C touchpads may be able to wake up the
system by default if the system is configured as such.

However on Clevo NL5xNU there is a mistake in the ACPI tables that the
TP_ATTN# signal connected to GPIO 9 is configured as ActiveLow and level
triggered but connected to a pull up. As soon as the system suspends the
touchpad loses power and then the system wakes up.

To avoid this problem, introduce a quirk for this model that will prevent
the wakeup capability for being set for GPIO 9.

This patch is analoge to a very similar patch for NL5xRU, just the DMI
string changed.

Signed-off-by: Werner Sembach <wse@...edocomputers.com>
Cc: stable@...r.kernel.org
---
 drivers/gpio/gpiolib-acpi.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 34ff048e70d0e..055013f959b25 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -1624,6 +1624,19 @@ static const struct dmi_system_id gpiolib_acpi_quirks[] __initconst = {
 			.ignore_interrupt = "AMDI0030:00@18",
 		},
 	},
+	{
+		/*
+		 * Spurious wakeups from TP_ATTN# pin
+		 * Found in BIOS 1.7.8
+		 * https://gitlab.freedesktop.org/drm/amd/-/issues/1722#note_1720627
+		 */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"),
+		},
+		.driver_data = &(struct acpi_gpiolib_dmi_quirk) {
+			.ignore_wake = "ELAN0415:00@9",
+		},
+	},
 	{
 		/*
 		 * Spurious wakeups from TP_ATTN# pin
-- 
2.34.1