From 096426b457a3522d6c005e0efe0be24b89dad232 Mon Sep 17 00:00:00 2001
From: Tao Xia <xiatao5@huaqin.corp-partner.google.com>
Date: Sat, 20 Feb 2021 17:59:37 +0800
Subject: [PATCH] mb/google/dedede/var/sasukette: Adding LTE module support
 into devicetree and associated GPIO configuartion

Adding LTE module support into devicetree and associated GPIO configuartion.

BUG=b:177385043
BRANCH=dedede
TEST=LTE function is OK

Signed-off-by: Tao Xia <xiatao5@huaqin.corp-partner.google.com>
Change-Id: I4d91045176fd6413ac6a5eed70289a5668e5b94f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50985
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
---
 .../dedede/variants/sasukette/Makefile.inc    |  2 ++
 .../google/dedede/variants/sasukette/gpio.c   |  9 ++++++++
 .../dedede/variants/sasukette/overridetree.cb | 10 ++++++++
 .../dedede/variants/sasukette/variant.c       | 23 +++++++++++++++++++
 4 files changed, 44 insertions(+)
 create mode 100644 src/mainboard/google/dedede/variants/sasukette/variant.c

diff --git a/src/mainboard/google/dedede/variants/sasukette/Makefile.inc b/src/mainboard/google/dedede/variants/sasukette/Makefile.inc
index eb2c9bc021..fd60a18b69 100644
--- a/src/mainboard/google/dedede/variants/sasukette/Makefile.inc
+++ b/src/mainboard/google/dedede/variants/sasukette/Makefile.inc
@@ -1,3 +1,5 @@
 ## SPDX-License-Identifier: GPL-2.0-or-later
 
 ramstage-y += gpio.c
+
+smm-y += variant.c
diff --git a/src/mainboard/google/dedede/variants/sasukette/gpio.c b/src/mainboard/google/dedede/variants/sasukette/gpio.c
index 0f5b6d292b..d9b1307928 100644
--- a/src/mainboard/google/dedede/variants/sasukette/gpio.c
+++ b/src/mainboard/google/dedede/variants/sasukette/gpio.c
@@ -5,8 +5,17 @@
 
 /* Pad configuration in ramstage*/
 static const struct pad_config gpio_table[] = {
+	/* A10 : WWAN_EN */
+	PAD_CFG_GPO(GPP_A10, 1, PWROK),
+
+	/* B7  : PCIE_CLKREQ2_N ==> WWAN_SAR_DETECT_ODL*/
+	PAD_CFG_GPI_IRQ_WAKE(GPP_B7, NONE, DEEP, LEVEL, INVERT),
+
 	/* D15 : EN_PP3300_CAMERA */
 	PAD_CFG_GPO(GPP_D15, 1, PLTRST),
+
+	/* H17 : WWAN_RST_L */
+	PAD_CFG_GPO(GPP_H17, 0, PLTRST),
 };
 
 const struct pad_config *variant_override_gpio_table(size_t *num)
diff --git a/src/mainboard/google/dedede/variants/sasukette/overridetree.cb b/src/mainboard/google/dedede/variants/sasukette/overridetree.cb
index 6e69b33edf..2b310ce529 100644
--- a/src/mainboard/google/dedede/variants/sasukette/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/sasukette/overridetree.cb
@@ -51,6 +51,16 @@ chip soc/intel/jasperlake
 						register "enable_delay_ms" = "20"
 						device usb 2.5 on end
 					end
+					chip drivers/usb/acpi
+						register "desc" = ""LTE""
+						register "type" = "UPC_TYPE_INTERNAL"
+						register "has_power_resource" = "1"
+						register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_H17)"
+						register "reset_off_delay_ms" = "20"
+						register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_A10)"
+						register "enable_delay_ms" = "20"
+						device usb 3.3 on end
+					end
 				end
 			end
 		end # USB xHCI
diff --git a/src/mainboard/google/dedede/variants/sasukette/variant.c b/src/mainboard/google/dedede/variants/sasukette/variant.c
new file mode 100644
index 0000000000..22caa069d3
--- /dev/null
+++ b/src/mainboard/google/dedede/variants/sasukette/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();
+}