Change in coreboot[master]: mb/google/guybrush: Configure Pen Detect device

[Karthik Ramasubramanian (Code Review)]

Karthik Ramasubramanian has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/52906 )

Change subject: mb/google/guybrush: Configure Pen Detect device
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mb/google/guybrush: Configure Pen Detect device

Pen Detect GPIO is exported through GPIO keys driver to the kernel so
that stylus tools is popped on pen eject event. Hence enable the GPIO
keys driver and configure the devicetree.

BUG=b:186011392
TEST=Build and boot to OS in guybrush. Ensure that PRP0001 device is
added to the ACPI SSDT table. Ensure that the Pen Eject events are
detected.
Event: time 1620159356.243180, type 5 (EV_SW), code 15 (SW_PEN_INSERTED), value 1
Event: time 1620159356.243180, -------------- SYN_REPORT ------------
Event: time 1620159356.735316, type 5 (EV_SW), code 15 (SW_PEN_INSERTED), value 0
Ensure that when the device is suspended, it wake on Pen Eject event and
does not wake on Pen Insert event.

Change-Id: I4d2aa29c0f1839c563b40734527a687a5618ba5c
Signed-off-by: Karthikeyan Ramasubramanian 
---
M src/mainboard/google/guybrush/Kconfig
M src/mainboard/google/guybrush/variants/guybrush/overridetree.cb
2 files changed, 16 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/06/52906/1

diff --git a/src/mainboard/google/guybrush/Kconfig b/src/mainboard/google/guybrush/Kconfig
index 51ac55d..8c23cf0 100644
--- a/src/mainboard/google/guybrush/Kconfig
+++ b/src/mainboard/google/guybrush/Kconfig
@@ -12,6 +12,7 @@
    select DISABLE_KEYBOARD_RESET_PIN
    select DISABLE_SPI_FLASH_ROM_SHARING
    select DRIVERS_AMD_I2S_MACHINE_DEV
+	select DRIVERS_GENERIC_GPIO_KEYS
    select DRIVERS_I2C_GENERIC
    select DRIVERS_I2C_HID
    select DRIVERS_UART_ACPI
diff --git a/src/mainboard/google/guybrush/variants/guybrush/overridetree.cb b/src/mainboard/google/guybrush/variants/guybrush/overridetree.cb
index 53e821e..416d058 100644
--- a/src/mainboard/google/guybrush/variants/guybrush/overridetree.cb
+++ b/src/mainboard/google/guybrush/variants/guybrush/overridetree.cb
@@ -84,6 +84,21 @@
    	end
    end # I2C0

+	device ref i2c_1 on
+		chip drivers/generic/gpio_keys
+			register "name" = ""PENH""
+			register "gpio" = "ACPI_GPIO_INPUT_ACTIVE_LOW(GPIO_4)"
+			register "key.dev_name" = ""EJCT""
+			register "key.wakeup_event_action" = "EV_ACT_DEASSERTED"
+			register "key.linux_code" = "SW_PEN_INSERTED"
+			register "key.linux_input_type" = "EV_SW"
+			register "key.label" = ""pen_eject""
+			register "key.debounce_interval" = "100"
+			register "key.wakeup_route" = "WAKEUP_ROUTE_GPIO_IRQ"
+			device generic 0 on end
+		end
+	end # I2C1
+
    device ref i2c_2 on
    	chip drivers/i2c/generic
    		register "hid" = ""10EC5682""