From 665c58b77a6cab398d600a612d1c14d56a01fd9b Mon Sep 17 00:00:00 2001
From: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>
Date: Thu, 16 Mar 2023 17:18:35 +0800
Subject: mb/google/rex: Enable USB camera power

Add enable_gpio for USB power resource

BUG=b:273891168
TEST=Able to detect USB CAM

Signed-off-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>
Change-Id: I08ebe560c8b75c8b590c889b7b90dbe678318d2a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73754
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
---
 src/mainboard/google/rex/variants/rex0/overridetree.cb |  2 ++
 src/mainboard/google/rex/variants/rex0/variant.c       | 15 +++++++++++++++
 2 files changed, 17 insertions(+)

(limited to 'src/mainboard/google/rex/variants')

diff --git a/src/mainboard/google/rex/variants/rex0/overridetree.cb b/src/mainboard/google/rex/variants/rex0/overridetree.cb
index bad123be54..d35eb36656 100644
--- a/src/mainboard/google/rex/variants/rex0/overridetree.cb
+++ b/src/mainboard/google/rex/variants/rex0/overridetree.cb
@@ -194,6 +194,8 @@ chip soc/intel/meteorlake
 					chip drivers/usb/acpi
 						register "desc" = ""USB2 Camera""
 						register "type" = "UPC_TYPE_INTERNAL"
+						register "has_power_resource" = "1"
+						register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_B09)"
 						device ref usb2_port6 on
 							probe UFC UFC_USB
 						end
diff --git a/src/mainboard/google/rex/variants/rex0/variant.c b/src/mainboard/google/rex/variants/rex0/variant.c
index 6a79780f6e..3aec24b165 100644
--- a/src/mainboard/google/rex/variants/rex0/variant.c
+++ b/src/mainboard/google/rex/variants/rex0/variant.c
@@ -1,8 +1,23 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <acpi/acpigen.h>
+#include <baseboard/variants.h>
+#include <fw_config.h>
 #include <sar.h>
+#include <variant/gpio.h>
 
 const char *get_wifi_sar_cbfs_filename(void)
 {
 	return "wifi_sar_0.hex";
 }
+
+void variant_generate_s0ix_hook(enum s0ix_entry entry)
+{
+	if (entry == S0IX_ENTRY) {
+		if (fw_config_probe(FW_CONFIG(UFC, UFC_USB)))
+			acpigen_soc_clear_tx_gpio(GPP_B09);
+	} else if (entry == S0IX_EXIT) {
+		if (fw_config_probe(FW_CONFIG(UFC, UFC_USB)))
+			acpigen_soc_set_tx_gpio(GPP_B09);
+	}
+}
-- 
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