gpiolib: acpi: Add a ignore interrupt quirk for Peaq C1010

On the Peaq C1010 2-in-1 INT33FC:00 pin 3 is connected to
a "dolby" button. At the ACPI level an _AEI event-handler
is connected which sets an ACPI variable to 1 on both
edges. This variable can be polled + cleared to 0 using WMI.

Since the variable is set on both edges the WMI interface is pretty
useless even when polling. So instead of writing a custom WMI
driver for this the x86-android-tablets code instantiates
a gpio-keys platform device for the "dolby" button.

Add an ignore_interrupt quirk for INT33FC:00 pin 3 on the Peaq C1010,
so that it is not seen as busy when the gpio-keys driver requests it.

Note this replaces a hack in x86-android-tablets where it would
call acpi_gpiochip_free_interrupts() on the INT33FC:00 GPIO
controller. acpi_gpiochip_free_interrupts() is considered private
(internal) gpiolib API so x86-android-tablets should stop using it.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20230909141816.58358-3-hdegoede@redhat.com

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 874b4025841b72e655f989c4c24dff542bf1a57e..17a86bdd9609febd7025a02191681d9061501d6b 100644 (file)
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -1654,6 +1654,26 @@ static const struct dmi_system_id gpiolib_acpi_quirks[] __initconst = {
                        .ignore_wake = "SYNA1202:00@16",
                },
        },
+       {
+               /*
+                * On the Peaq C1010 2-in-1 INT33FC:00 pin 3 is connected to
+                * a "dolby" button. At the ACPI level an _AEI event-handler
+                * is connected which sets an ACPI variable to 1 on both
+                * edges. This variable can be polled + cleared to 0 using
+                * WMI. But since the variable is set on both edges the WMI
+                * interface is pretty useless even when polling.
+                * So instead the x86-android-tablets code instantiates
+                * a gpio-keys platform device for it.
+                * Ignore the _AEI handler for the pin, so that it is not busy.
+                */
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "PEAQ"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "PEAQ PMM C1010 MD99187"),
+               },
+               .driver_data = &(struct acpi_gpiolib_dmi_quirk) {
+                       .ignore_interrupt = "INT33FC:00@3",
+               },
+       },
        {} /* Terminating entry */
 };