mb/google/dedede/var/drawcia: Add LTE modem support for drawper

Add LTE modem to devicetree.
Configure GPIO control for LTE modem by fw_config.

Update LTE USB port configuration at run-time after probing FW_CONFIG.
By default the concerned USB port takes the Type-A port configuration.

BUG=b:186393848
TEST=Build image and check with command modem status

Change-Id: I20450ae37e5047dba67211316515994bd2a09600
Signed-off-by: Tony Huang <tony-huang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55181
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

src/mainboard/google/dedede/variants/drawcia/Makefile.inc

@@ -1,4 +1,7 @@
 ## SPDX-License-Identifier: GPL-2.0-or-later
 
 ramstage-y += gpio.c
+ramstage-y += ramstage.c
 ramstage-$(CONFIG_FW_CONFIG) += variant.c
+
+smm-y += variant.c

src/mainboard/google/dedede/variants/drawcia/gpio.c

@@ -3,6 +3,7 @@
 #include <baseboard/gpio.h>
 #include <baseboard/variants.h>
 #include <boardid.h>
+#include <bootstate.h>
 #include <fw_config.h>
 #include <ec/google/chromeec/ec.h>
 
@@ -16,8 +17,27 @@ static const struct pad_config not_board6or8_gpio_table[] = {
 /* bid6: Pad configuration for board version 6 or 8 in ramstage*/
 static const struct pad_config board6or8_gpio_table[] = {
 
+	/* A10 : WWAN_EN */
+	PAD_CFG_GPO(GPP_A10, 1, PWROK),
+
+	/* B7  : PCIE_CLKREQ2_N ==> WWAN_SAR_DETECT_ODL*/
+	PAD_CFG_GPO(GPP_B7, 1, DEEP),
+
 	/* C12 : AP_PEN_DET_ODL has an external pull-up and hence no pad termination.*/
 	PAD_CFG_GPI_GPIO_DRIVER(GPP_C12, NONE, DEEP),
+
+	/* D0  : WWAN_HOST_WAKE ==> WWAN_WDISABLE_L */
+	PAD_CFG_GPO(GPP_D0, 1, DEEP),
+
+	/* H0 : WWAN_PERST */
+	PAD_CFG_GPO(GPP_H0, 0, PLTRST),
+};
+
+static const struct pad_config lte_disable_pads[] = {
+	PAD_NC(GPP_A10, NONE),
+	PAD_NC(GPP_B7, NONE),
+	PAD_NC(GPP_D0, NONE),
+	PAD_NC(GPP_H0, NONE),
 };
 
 const struct pad_config *variant_override_gpio_table(size_t *num)
@@ -32,3 +52,10 @@ const struct pad_config *variant_override_gpio_table(size_t *num)
 
 	return not_board6or8_gpio_table;
 }
+
+static void fw_config_handle(void *unused)
+{
+	if (!fw_config_probe(FW_CONFIG(DB_PORTS, DB_PORTS_1A_HDMI_LTE)))
+		gpio_configure_pads(lte_disable_pads, ARRAY_SIZE(lte_disable_pads));
+}
+BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fw_config_handle, NULL);

src/mainboard/google/dedede/variants/drawcia/overridetree.cb

@@ -143,11 +143,31 @@ chip soc/intel/jasperlake
 		device pci 14.0 on
 			chip drivers/usb/acpi
 				device usb 0.0 on
+					chip drivers/usb/acpi
+						register "desc" = ""Multi-use Port""
+						register "type" = "UPC_TYPE_A"
+						register "group" = "ACPI_PLD_GROUP(2, 2)"
+						device usb 2.3 on
+							probe DB_PORTS DB_PORTS_1A_HDMI
+							probe DB_PORTS DB_PORTS_1C_1A
+							probe DB_PORTS DB_PORTS_1A_HDMI_LTE
+						end
+					end
 					chip drivers/usb/acpi
 						register "desc" = ""Camera""
 						register "type" = "UPC_TYPE_INTERNAL"
 						device usb 2.5 on end
 					end
+					chip drivers/usb/acpi
+						register "desc" = ""Multi-use Port""
+						register "type" = "UPC_TYPE_USB3_A"
+						register "group" = "ACPI_PLD_GROUP(2, 2)"
+						device usb 3.3 on
+							probe DB_PORTS DB_PORTS_1A_HDMI
+							probe DB_PORTS DB_PORTS_1C_1A
+							probe DB_PORTS DB_PORTS_1A_HDMI_LTE
+						end
+					end
 				end
 			end
 		end # USB xHCI

src/mainboard/google/dedede/variants/drawcia/ramstage.c

@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/variants.h>
+
+static struct acpi_gpio lte_reset_gpio = ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_H0);
+static struct acpi_gpio lte_enable_gpio = ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_A10);
+
+void variant_devtree_update(void)
+{
+	update_lte_device(&lte_reset_gpio, &lte_enable_gpio);
+}

src/mainboard/google/dedede/variants/drawcia/variant.c

@@ -1,7 +1,12 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <bootstate.h>
+#include <acpi/acpi.h>
+#include <baseboard/variants.h>
+#include <delay.h>
 #include <drivers/intel/gma/opregion.h>
 #include <fw_config.h>
+#include <gpio.h>
 #include <sar.h>
 
 const char *get_wifi_sar_cbfs_filename(void)
@@ -20,3 +25,20 @@ const char *mainboard_vbt_filename(void)
 
 	return "vbt.bin";
 }
+
+static void power_off_lte_module(void)
+{
+	gpio_output(GPP_H0, 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();
+}