linux-kernel - Re: [PATCH 2/2] gpiolib: acpi: Add a ignore wakeup quirk for Clevo NL5xRU

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Message-ID: <Y8ZdbVT+5z+q9xvC@smile.fi.intel.com>
Date:   Tue, 17 Jan 2023 10:33:49 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Mario Limonciello <mario.limonciello@....com>
Cc:     Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Raul E Rangel <rrangel@...omium.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        regressions@...ts.linux.dev,
        Werner Sembach <wse@...edocomputers.com>,
        linux-gpio@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] gpiolib: acpi: Add a ignore wakeup quirk for Clevo
 NL5xRU

On Mon, Jan 16, 2023 at 01:37:02PM -0600, Mario Limonciello wrote:
> 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 NL5xRU 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.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

> Fixes: 1796f808e4bb ("HID: i2c-hid: acpi: Stop setting wakeup_capable")
> Reported-by: Werner Sembach <wse@...edocomputers.com>
> Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1722#note_1720627
> Co-developed-by: Werner Sembach <wse@...edocomputers.com>
> Signed-off-by: Werner Sembach <wse@...edocomputers.com>
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
> ---
>  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 4287555a12408..9ef0f5641b521 100644
> --- a/drivers/gpio/gpiolib-acpi.c
> +++ b/drivers/gpio/gpiolib-acpi.c
> @@ -1623,6 +1623,19 @@ 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, "NL5xRU"),
> +		},
> +		.driver_data = &(struct acpi_gpiolib_dmi_quirk) {
> +			.ignore_wake = "ELAN0415:00@9",
> +		},
> +	},
>  	{} /* Terminating entry */
>  };
>  
> -- 
> 2.34.1
> 

-- 
With Best Regards,
Andy Shevchenko