Karthik Ramasubramanian has uploaded this change for review.

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mb/google/dedede: Add support to handle pen eject events

BUG=b:160185066
TEST=Build and boot the waddledoo mainboard. Verify Pen Eject events
using evtest.

Change-Id: I6dd72ae42a7549ee16368f2ba0869d1be921f63a
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
---
M src/mainboard/google/dedede/Kconfig
M src/mainboard/google/dedede/variants/waddledoo/Makefile.inc
A src/mainboard/google/dedede/variants/waddledoo/gpio.c
M src/mainboard/google/dedede/variants/waddledoo/overridetree.cb
4 files changed, 32 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/17/43317/1

diff --git a/src/mainboard/google/dedede/Kconfig b/src/mainboard/google/dedede/Kconfig
index dcea3fa..f467be9 100644
--- a/src/mainboard/google/dedede/Kconfig
+++ b/src/mainboard/google/dedede/Kconfig
@@ -1,6 +1,7 @@
 config BOARD_GOOGLE_BASEBOARD_DEDEDE
 	def_bool n
 	select BOARD_ROMSIZE_KB_16384 if !BOARD_ROMSIZE_KB_32768
+	select DRIVERS_GENERIC_GPIO_KEYS
 	select DRIVERS_I2C_GENERIC
 	select DRIVERS_I2C_HID
 	select DRIVERS_SPI_ACPI
diff --git a/src/mainboard/google/dedede/variants/waddledoo/Makefile.inc b/src/mainboard/google/dedede/variants/waddledoo/Makefile.inc
index eda535c..93f34f8 100644
--- a/src/mainboard/google/dedede/variants/waddledoo/Makefile.inc
+++ b/src/mainboard/google/dedede/variants/waddledoo/Makefile.inc
@@ -2,4 +2,5 @@
 
 romstage-y += memory.c
 
+ramstage-y += gpio.c
 ramstage-y += variant.c
diff --git a/src/mainboard/google/dedede/variants/waddledoo/gpio.c b/src/mainboard/google/dedede/variants/waddledoo/gpio.c
new file mode 100644
index 0000000..b414e3d
--- /dev/null
+++ b/src/mainboard/google/dedede/variants/waddledoo/gpio.c
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+
+/* Pad configuration in ramstage */
+static const struct pad_config override_gpio_table[] = {
+	/* C12 : AP_PEN_DET_ODL */
+	PAD_CFG_GPI_SCI(GPP_C12, NONE, DEEP, EDGE_SINGLE, NONE),
+};
+
+const struct pad_config *variant_override_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(override_gpio_table);
+	return override_gpio_table;
+}
diff --git a/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb b/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb
index 2936cdd..1cede5d 100644
--- a/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb
@@ -83,6 +83,20 @@
 				device i2c 15 on end
 			end
 		end #I2C 0
+		device pci 15.1 on
+			chip drivers/generic/gpio_keys
+				register "name" = ""PENH""
+				register "gpio" = "ACPI_GPIO_IRQ_EDGE_BOTH(GPP_C12)"
+				register "key.wake_gpe" = "GPE0_DW1_12"
+				register "key.wakeup_route" = "WAKEUP_ROUTE_SCI"
+				register "key.wakeup_event_action" = "EV_ACT_ASSERTED"
+				register "key.dev_name" = ""EJCT""
+				register "key.linux_code" = "SW_PEN_INSERTED"
+				register "key.linux_input_type" = "EV_SW"
+				register "key.label" = ""pen_eject""
+				device generic 0 on end
+			end
+		end #I2C 1
 		device pci 15.2 on
 			chip drivers/i2c/hid
 				register "generic.hid" = ""SIS6496""

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