From ac07b03634dc5997901eae4b031b5f4975a2a71e Mon Sep 17 00:00:00 2001
From: Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>
Date: Mon, 27 Sep 2021 18:50:26 +0800
Subject: [PATCH] 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 <rex-bc.chen@mediatek.com>
Change-Id: I84946c2c74dd233419cb94f013a42c734363baf7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58938
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
---
 src/soc/mediatek/mt8186/Makefile.inc | 1 +
 src/soc/mediatek/mt8186/bootblock.c  | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/src/soc/mediatek/mt8186/Makefile.inc b/src/soc/mediatek/mt8186/Makefile.inc
index 427b3a18a7..a68d051f1e 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 8dffe5671b..17fd27e53f 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 @@ void bootblock_soc_init(void)
 	mtk_mmu_init();
 	mtk_wdt_init();
 	mt_pll_init();
+	unmask_eint_event_mask();
 }