lynxpoint: Add interrupt for GPIO controller in ACPI device

The GPIO controller uses IRQ14 as an active high level triggered
source for GPIOs that are configured to trigger shared interrupt.

TEST=emerge-samus chromeos-coreboot-samus

This was also tested on bolt by configuring the touchscreen to use
a shared GPIO interrupt:

localhost ~ $ grep atmel_mxt_ts /proc/interrupts
54:    24    188    93    124    LP-GPIO-demux    atmel_mxt_ts

Change-Id: I3765120112bae11407e5b2020399d0d0b8e3cef8
Signed-off-by: Duncan Laurie <>
Reviewed-by: Aaron Durbin <>
1 file changed