From: Hans de Goede hdegoede@redhat.com
[ Upstream commit 180a8f12c21f41740fee09ca7f7aa98ff5bb99f8 ]
Some devices list 3 Gpio resources in the ACPI resource list for the touchscreen:
1. GpioInt resource pointing to the GPIO used for the interrupt 2. GpioIo resource pointing to the reset GPIO 3. GpioIo resource pointing to the GPIO used for the interrupt
Note how the third extra GpioIo resource really is a duplicate of the GpioInt provided info.
Ignore this extra GPIO, treating this setup the same as gpio_count == 2 && gpio_int_idx == 0 fixes the touchscreen not working on the Thunderbook Colossus W803 rugged tablet and likely also on the CyberBook_T116K.
Reported-by: Maarten van der Schrieck Closes: https://gitlab.com/AdyaAdya/goodix-touchscreen-linux-driver/-/issues/22 Suggested-by: Maarten van der Schrieck Tested-by: Maarten van der Schrieck Signed-off-by: Hans de Goede hdegoede@redhat.com Link: https://lore.kernel.org/r/20231223141650.10679-1-hdegoede@redhat.com Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/input/touchscreen/goodix.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c index af32fbe57b63..b068ff8afbc9 100644 --- a/drivers/input/touchscreen/goodix.c +++ b/drivers/input/touchscreen/goodix.c @@ -884,7 +884,8 @@ static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts) } }
- if (ts->gpio_count == 2 && ts->gpio_int_idx == 0) { + /* Some devices with gpio_int_idx 0 list a third unused GPIO */ + if ((ts->gpio_count == 2 || ts->gpio_count == 3) && ts->gpio_int_idx == 0) { ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO; gpio_mapping = acpi_goodix_int_first_gpios; } else if (ts->gpio_count == 2 && ts->gpio_int_idx == 1) {