Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-09-20 23:13:00 +00:00
Code Issues Packages Projects Releases Wiki Activity

Input: goodix - accept ACPI resources with gpio_count == 3 && gpio_int_idx == 0

Browse Source 
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>
This commit is contained in:
Hans de Goede 2023-12-23 15:16:50 +01:00 committed by Dmitry Torokhov
parent 58f65f9db7
commit 180a8f12c2
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/input/touchscreen/goodix.c
View File

@ -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) {