Change in coreboot[master]: mb/google/dedede/var/beadrix: Add LTE power off sequence

[Teddy Shih (Code Review)]

Teddy Shih has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/61329 )

Change subject: mb/google/dedede/var/beadrix: Add LTE power off sequence
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mb/google/dedede/var/beadrix: Add LTE power off sequence

This change adds LTE power off sequence for beadrix.

BUG=b:204882915
BRANCH=dedede
TEST=FW_NAME=beadrix emerge-dedede coreboot

Change-Id: I11370bf69438465d2230e2633044ba42685a152b
Signed-off-by: Teddy Shih 
---
M src/mainboard/google/dedede/variants/beadrix/Makefile.inc
A src/mainboard/google/dedede/variants/beadrix/variant.c
2 files changed, 25 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/29/61329/1

diff --git a/src/mainboard/google/dedede/variants/beadrix/Makefile.inc b/src/mainboard/google/dedede/variants/beadrix/Makefile.inc
index e835c69..1151020 100644
--- a/src/mainboard/google/dedede/variants/beadrix/Makefile.inc
+++ b/src/mainboard/google/dedede/variants/beadrix/Makefile.inc
@@ -3,3 +3,5 @@
 romstage-y += memory.c

ramstage-y += gpio.c
+
+smm-y += variant.c
diff --git a/src/mainboard/google/dedede/variants/beadrix/variant.c b/src/mainboard/google/dedede/variants/beadrix/variant.c
new file mode 100644
index 0000000..22caa06
--- /dev/null
+++ b/src/mainboard/google/dedede/variants/beadrix/variant.c
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <acpi/acpi.h>
+#include <baseboard/variants.h>
+#include <delay.h>
+#include <gpio.h>
+
+static void power_off_lte_module(void)
+{
+	gpio_output(GPP_H17, 0);
+	mdelay(20);
+	gpio_output(GPP_A10, 0);
+}
+
+void variant_smi_sleep(u8 slp_typ)
+{
+	/*
+	 * Once the FW_CONFIG is provisioned, power off LTE module only under
+	 * the situation where it is stuffed.
+	 */
+	if (slp_typ == ACPI_S5)
+		power_off_lte_module();
+}