Change in coreboot[master]: soc/mediatek/mt8186: Enable and initialize EINT

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin.
Rex-BC Chen has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/58938 )

Change subject: soc/mediatek/mt8186: Enable and initialize EINT
......................................................................

soc/mediatek/mt8186: Enable and initialize EINT

EINT event mask register is used to mask EINT wakeup source.
All wakeup sources are masked by default. Since most MediaTek SoCs do
not have this design, we can't modify the kernel EINT upstream driver to
solve the issue 'Can't wake using power button (cros_ec) or touchpad'.
So we add a driver here to unmask all wakeup sources.

TEST=build pass
BUG=b:202871018

Signed-off-by: Rex-BC Chen 
Change-Id: I84946c2c74dd233419cb94f013a42c734363baf7
---
M src/soc/mediatek/mt8186/Makefile.inc
M src/soc/mediatek/mt8186/bootblock.c
2 files changed, 3 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/38/58938/1

diff --git a/src/soc/mediatek/mt8186/Makefile.inc b/src/soc/mediatek/mt8186/Makefile.inc
index 427b3a18..a68d051 100644
--- a/src/soc/mediatek/mt8186/Makefile.inc
+++ b/src/soc/mediatek/mt8186/Makefile.inc
@@ -1,6 +1,7 @@
 ifeq ($(CONFIG_SOC_MEDIATEK_MT8186),y)

bootblock-y += bootblock.c
+bootblock-y += ../common/eint_event.c
 bootblock-y += ../common/flash_controller.c
 bootblock-y += ../common/gpio.c gpio.c
 bootblock-y += ../common/mmu_operations.c
diff --git a/src/soc/mediatek/mt8186/bootblock.c b/src/soc/mediatek/mt8186/bootblock.c
index 8dffe56..17fd27e 100644
--- a/src/soc/mediatek/mt8186/bootblock.c
+++ b/src/soc/mediatek/mt8186/bootblock.c
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */

#include <bootblock_common.h>
+#include <soc/eint_event.h>
 #include <soc/mmu_operations.h>
 #include <soc/pll.h>
 #include <soc/wdt.h>
@@ -10,4 +11,5 @@
    mtk_mmu_init();
    mtk_wdt_init();
    mt_pll_init();
+	unmask_eint_event_mask();
 }