kingler: add usbc test

This CL adds the initial USB-C tests on kingler

BUG=b:272664811
TEST=twister -ci zephyr/test

Change-Id: I14395ce84442f40e6fd05f7c14a2814fb24ebb9a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/4483240
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
Tested-by: Eric Yilun Lin <yllin@google.com>
Auto-Submit: Eric Yilun Lin <yllin@google.com>
Commit-Queue: Ting Shen <phoenixshen@chromium.org>

12 files changed, 358 insertions, 78 deletions

diff --git a/zephyr/program/corsola/include/variant_db_detection.h b/zephyr/program/corsola/include/variant_db_detection.h
index e98ba3067d..cf86e1ae1c 100644
--- a/zephyr/program/corsola/include/variant_db_detection.h
+++ b/zephyr/program/corsola/include/variant_db_detection.h
@@ -8,6 +8,8 @@
 #ifndef __CROS_EC_CORSOLA_DB_DETECTION_H
 #define __CROS_EC_CORSOLA_DB_DETECTION_H
 
+#include <stdint.h>
+
 enum corsola_db_type {
 	CORSOLA_DB_UNINIT = -1,
 	CORSOLA_DB_NONE,
@@ -16,19 +18,19 @@ enum corsola_db_type {
 	CORSOLA_DB_COUNT,
 };
 
-#ifdef CONFIG_VARIANT_CORSOLA_DB_DETECTION
 /*
  * Get the connected daughterboard type.
  *
  * @return		The daughterboard type.
  */
+#ifdef CONFIG_VARIANT_CORSOLA_DB_DETECTION
 enum corsola_db_type corsola_get_db_type(void);
-#else
+#elif !defined(CONFIG_TEST)
 inline enum corsola_db_type corsola_get_db_type(void)
 {
 	return CORSOLA_DB_NONE;
-};
-#endif /* CONFIG_VARIANT_CORSOLA_DB_DETECTION */
+}
+#endif
 
 /* return the adjusted port count for board overridden usbc/charger functions.
  */
diff --git a/zephyr/program/corsola/npcx_adc.dtsi b/zephyr/program/corsola/npcx_adc.dtsi
index 7b69abe48a..cd6a9c1bef 100644
--- a/zephyr/program/corsola/npcx_adc.dtsi
+++ b/zephyr/program/corsola/npcx_adc.dtsi
@@ -7,6 +7,7 @@
  * Kingler and Steelix use the same dts, take care of this when modify it.
  */
 
+
 / {
 	named-adc-channels {
 		compatible = "named-adc-channels";
diff --git a/zephyr/test/kingler/CMakeLists.txt b/zephyr/test/kingler/CMakeLists.txt
index 0cecc14b8f..f361e6eb3e 100644
--- a/zephyr/test/kingler/CMakeLists.txt
+++ b/zephyr/test/kingler/CMakeLists.txt
@@ -12,27 +12,38 @@ zephyr_include_directories("${PLATFORM_EC_PROGRAM_DIR}/corsola/include")
 
 target_sources(app PRIVATE src/fakes.c)
 
-target_sources_ifdef(CONFIG_TEST_STEELIX_RUSTY
-app PRIVATE ${PLATFORM_EC_PROGRAM_DIR}/corsola/steelix/src/board.c)
-target_sources_ifdef(CONFIG_TEST_FORM_FACTOR_CONVERTIBLE
-			app PRIVATE src/tablet.c)
-target_sources_ifdef(CONFIG_TEST_FORM_FACTOR_CLAMSHELL
-			app PRIVATE src/clamshell.c)
-target_sources_ifdef(CONFIG_VARIANT_CORSOLA_DB_DETECTION
-app PRIVATE ${PLATFORM_EC_PROGRAM_DIR}/corsola/src/variant_db_detection.c)
-target_sources_ifdef(CONFIG_TEST_DB_DETECT_TYPEC
-			app PRIVATE src/db_detect_typec.c)
-target_sources_ifdef(CONFIG_TEST_DB_DETECT_HDMI
-			app PRIVATE src/db_detect_hdmi.c
-			${PLATFORM_EC}/zephyr/shim/src/usb_muxes.c
-			${PLATFORM_EC}/driver/usb_mux/usb_mux.c
-			${PLATFORM_EC}/driver/usb_mux/virtual.c)
-target_sources_ifdef(CONFIG_TEST_DB_DETECT_NONE
-			app PRIVATE src/db_detect_none.c)
-target_sources_ifdef(CONFIG_TEST_ALT_SENSOR_PROBE
-			app PRIVATE src/alt_sensor.c)
-target_sources_ifdef(CONFIG_TEST_KINGLER_CCD
-app PRIVATE src/ccd.c ${PLATFORM_EC_PROGRAM_DIR}/corsola/src/board.c)
-target_sources_ifdef(CONFIG_TEST_VOLTORB
-			app PRIVATE src/voltorb_usbc.c
-			${PLATFORM_EC_PROGRAM_DIR}/corsola/voltorb/src/usbc.c)
+target_sources_ifdef(
+        CONFIG_TEST_KINGLER_USBC
+        app
+        PRIVATE
+        ${PLATFORM_EC_PROGRAM_DIR}/corsola/src/npcx_usbc.c
+        ${PLATFORM_EC_PROGRAM_DIR}/corsola/src/npcx_usb_pd_policy.c
+        ${PLATFORM_EC_PROGRAM_DIR}/corsola/src/usb_pd_policy.c
+        ${PLATFORM_EC_PROGRAM_DIR}/corsola/src/usbc.c
+        src/kingler_usbc.c)
+target_sources_ifdef(CONFIG_TEST_STEELIX_RUSTY app PRIVATE
+                     ${PLATFORM_EC_PROGRAM_DIR}/corsola/steelix/src/board.c)
+target_sources_ifdef(CONFIG_TEST_FORM_FACTOR_CONVERTIBLE app PRIVATE
+                     src/tablet.c)
+target_sources_ifdef(CONFIG_TEST_FORM_FACTOR_CLAMSHELL app PRIVATE
+                     src/clamshell.c)
+target_sources_ifdef(
+        CONFIG_VARIANT_CORSOLA_DB_DETECTION app PRIVATE
+        ${PLATFORM_EC_PROGRAM_DIR}/corsola/src/variant_db_detection.c)
+target_sources_ifdef(CONFIG_TEST_DB_DETECT_TYPEC app PRIVATE
+                     src/db_detect_typec.c)
+target_sources_ifdef(
+        CONFIG_TEST_DB_DETECT_HDMI
+        app
+        PRIVATE
+        src/db_detect_hdmi.c
+        ${PLATFORM_EC}/zephyr/shim/src/usb_muxes.c
+        ${PLATFORM_EC}/driver/usb_mux/usb_mux.c
+        ${PLATFORM_EC}/driver/usb_mux/virtual.c)
+target_sources_ifdef(CONFIG_TEST_DB_DETECT_NONE app PRIVATE
+                     src/db_detect_none.c)
+target_sources_ifdef(CONFIG_TEST_ALT_SENSOR_PROBE app PRIVATE src/alt_sensor.c)
+target_sources_ifdef(CONFIG_TEST_KINGLER_CCD app PRIVATE src/ccd.c
+                     ${PLATFORM_EC_PROGRAM_DIR}/corsola/src/board.c)
+target_sources_ifdef(CONFIG_TEST_VOLTORB app PRIVATE src/voltorb_usbc.c
+                     ${PLATFORM_EC_PROGRAM_DIR}/corsola/voltorb/src/usbc.c)
diff --git a/zephyr/test/kingler/Kconfig b/zephyr/test/kingler/Kconfig
index a8449fe8c6..4cde54ce6d 100644
--- a/zephyr/test/kingler/Kconfig
+++ b/zephyr/test/kingler/Kconfig
@@ -2,6 +2,11 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+config TEST_KINGLER_USBC
+	bool "Run the tests intended for kingler"
+	help
+	  Include USB-C tests into the binary.
+
 config TEST_STEELIX_RUSTY
 	bool "Run the tests intended for steelix and rusty"
 	help
diff --git a/zephyr/test/kingler/common.dtsi b/zephyr/test/kingler/common.dtsi
index c04844f227..e3b03c57a8 100644
--- a/zephyr/test/kingler/common.dtsi
+++ b/zephyr/test/kingler/common.dtsi
@@ -4,7 +4,9 @@
  */
 
 #include <board-overlays/native_posix.dts>
+#include <dt-bindings/usb_pd_tcpm.h>
 #include <npcx_emul.dts>
+#include <zephyr/dt-bindings/gpio/gpio.h>
 
 / {
 	usbc {
@@ -25,6 +27,11 @@
 				compatible = "cros-ec,usb-mux-chain";
 				usb-muxes = <&virtual_mux_1>;
 			};
+			usb_mux_chain_1_hdmi_db: usb-mux-chain-1-hdmi-db {
+				compatible = "cros-ec,usb-mux-chain";
+				alternative-chain;
+				usb-muxes = <&virtual_mux_1>;
+			};
 		};
 		port0-muxes {
 			virtual_mux_0: virtual-mux-0 {
@@ -38,6 +45,41 @@
 		};
 	};
 
+	adc0: adc {
+		compatible = "zephyr,adc-emul";
+		nchannels = <6>;
+		ref-internal-mv = <3300>;
+		#io-channel-cells = <1>;
+		status = "okay";
+	};
+
+	named-adc-channels {
+		compatible = "named-adc-channels";
+
+		adc_charger_pmon_r {
+			enum-name = "ADC_PSYS";
+			io-channels = <&adc0 0>;
+			/*
+			 * ISL9238C PSYS output is 1.44 uA/W over 33K resistor.
+			 */
+			mul = <21043>;
+		};
+		adc_ec_id0 {
+			enum-name = "ADC_ID_0";
+			io-channels = <&adc0 1>;
+		};
+		adc_ec_id1 {
+			enum-name = "ADC_ID_1";
+			io-channels = <&adc0 2>;
+		};
+		adc_charger_amon_r {
+			enum-name = "ADC_AMON_BMON";
+			io-channels = <&adc0 3>;
+			mul = <1000>;
+			div = <18>;
+		};
+	};
+
 	/* These are temporary just to get the test to build.
 	 * Should be replaced with the correct accel drivers,
 	 * but we're not testing that code right now anyway.
@@ -81,36 +123,17 @@
 		/* list of sensors in force mode */
 		accel-force-mode-sensors = <&lid_accel>;
 	};
+
 	named-i2c-ports {
 		compatible = "named-i2c-ports";
 		i2c_sensor: i2c-sensor {
-			i2c-port = <&i2c0_0>;
+			i2c-port = <&i2c_ctrl0>;
 			enum-names = "I2C_PORT_SENSOR";
 		};
 		i2c_eeprom: i2c-eeprom {
-			i2c-port = <&i2c3_0>;
-			enum-names = "I2C_PORT_EEPROM";
-		};
-	};
-	/* TODO(jbettis): Move the i2c ports and pinctrls to npcx_emul.dts,
-	 * and add all of them instead of just these.
-	 */
-	soc-if {
-		i2c0_0: io_i2c_ctrl0_port0 {
-			compatible = "nuvoton,npcx-i2c-port";
-			#address-cells = <1>;
-			#size-cells = <0>;
-			port = <0x00>;
-			controller = <&i2c_ctrl0>;
-			status = "disabled";
-		};
-		i2c3_0: io_i2c_ctrl3_port0 {
-			compatible = "nuvoton,npcx-i2c-port";
-			#address-cells = <1>;
-			#size-cells = <0>;
-			port = <0x30>;
-			controller = <&i2c_ctrl3>;
-			status = "disabled";
+			i2c-port = <&i2c_ctrl3>;
+			enum-names = "I2C_PORT_EEPROM", "I2C_PORT_BATTERY",
+					"I2C_PORT_CHARGER";
 		};
 	};
 	pinctrl: pinctrl {
@@ -138,43 +161,31 @@
 	};
 };
 
-&i2c0_0 {
-	status = "okay";
-	clock-frequency = <I2C_BITRATE_FAST>;
-	pinctrl-0 = <&i2c0_0_sda_scl_gpb4_b5>;
-	pinctrl-names = "default";
-};
-
 &i2c_ctrl0 {
 	status = "okay";
-};
 
-&i2c_ctrl2 {
-	status = "okay";
-};
 
-i2c_pwr_cbi: &i2c3_0 {
-	status = "okay";
-	clock-frequency = <I2C_BITRATE_FAST>;
-	pinctrl-0 = <&i2c3_0_sda_scl_gpd0_d1>;
-	pinctrl-names = "default";
-
-	charger: isl923x@9 {
-		compatible = "intersil,isl923x";
+	battery: sb@b {
+		compatible = "zephyr,smart-battery-emul";
 		status = "okay";
-		reg = <0x9>;
+		reg = <0xb>;
+		cycle-count = <99>;
+		version = "BATTERY_SPEC_VER_1_1_WITH_PEC";
+		/* Real battery voltages are multiples of 4.4V. */
+		desired-charg-volt = <5000>;
+		desired-charg-cur = <1000>;
+		mf-name = "LGC";
+		dev-name = "AC17A8M";
 	};
 };
 
-&i2c_ctrl3 {
+&i2c_ctrl2 {
 	status = "okay";
 };
 
-&i2c_ctrl5 {
+&i2c_ctrl3 {
 	status = "okay";
-};
 
-&i2c_ctrl3 {
 	cbi_eeprom: eeprom@50 {
 		compatible = "atmel,at24";
 		reg = <0x50>;
@@ -184,3 +195,8 @@ i2c_pwr_cbi: &i2c3_0 {
 		timeout = <5>;
 	};
 };
+
+&i2c_ctrl5 {
+	status = "okay";
+};
+
diff --git a/zephyr/test/kingler/kingler.default.overlay b/zephyr/test/kingler/kingler.default.overlay
index 908022f5e2..adc3f89451 100644
--- a/zephyr/test/kingler/kingler.default.overlay
+++ b/zephyr/test/kingler/kingler.default.overlay
@@ -6,3 +6,4 @@
 #include "common.dtsi"
 #include "../program/corsola/npcx_interrupts.dtsi"
 #include "../program/corsola/npcx_gpio.dtsi"
+#include "../program/corsola/usba.dtsi"
diff --git a/zephyr/test/kingler/kingler.usbc.conf b/zephyr/test/kingler/kingler.usbc.conf
new file mode 100644
index 0000000000..cb04e5c550
--- /dev/null
+++ b/zephyr/test/kingler/kingler.usbc.conf
@@ -0,0 +1,28 @@
+# Copyright 2023 The ChromiumOS Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+CONFIG_PLATFORM_EC_TCPC_INTERRUPT=y
+CONFIG_PLATFORM_EC_USB_PORT_POWER_DUMB=y
+CONFIG_PLATFORM_EC_USBC=y
+CONFIG_PLATFORM_EC_USB_PORT_POWER_DUMB_CUSTOM_HOOK=y
+CONFIG_PLATFORM_EC_USBC_PPC=y
+CONFIG_PLATFORM_EC_BATTERY_FUEL_GAUGE=y
+CONFIG_PLATFORM_EC_VBOOT_HASH=n
+CONFIG_PLATFORM_EC_SWITCH=n
+CONFIG_PLATFORM_EC_USB_PD_DISCHARGE_PPC=y
+CONFIG_PLATFORM_EC_USB_PD_VBUS_MEASURE_BY_BOARD=y
+CONFIG_PLATFORM_EC_CHARGER_SENSE_RESISTOR=10
+CONFIG_PLATFORM_EC_CHARGER_SENSE_RESISTOR_AC=20
+CONFIG_PLATFORM_EC_EXTPOWER=y
+CONFIG_PLATFORM_EC_HOSTCMD=y
+CONFIG_PLATFORM_EC_USB_PD_TCPM_ANX7447=y
+CONFIG_VARIANT_CORSOLA_DB_DETECTION=n
+CONFIG_PLATFORM_EC_BACKLIGHT_LID=n
+CONFIG_PLATFORM_EC_CHARGER_ISL9238C=y
+CONFIG_PLATFORM_EC_CHARGE_MANAGER=y
+CONFIG_PLATFORM_EC_CHARGER=y
+CONFIG_PLATFORM_EC_LID_SWITCH=y
+CONFIG_PLATFORM_EC_CHARGE_RAMP_HW=y
+CONFIG_PLATFORM_EC_USB_CHARGER=y
+CONFIG_PLATFORM_EC_USB_PD_TCPM_ANX7447=y
diff --git a/zephyr/test/kingler/kingler.usbc.overlay b/zephyr/test/kingler/kingler.usbc.overlay
new file mode 100644
index 0000000000..b697edf791
--- /dev/null
+++ b/zephyr/test/kingler/kingler.usbc.overlay
@@ -0,0 +1,118 @@
+/* Copyright 2023 The ChromiumOS Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <zephyr/dt-bindings/gpio/gpio.h>
+#include <dt-bindings/usb_pd_tcpm.h>
+
+#include "common.dtsi"
+#include "../program/corsola/npcx_interrupts.dtsi"
+#include "../program/corsola/npcx_gpio.dtsi"
+#include "../program/corsola/usba.dtsi"
+
+/ {
+	usbc {
+		port0@0 {
+			bc12 = <&pi3usb9201_emul0>;
+			tcpc = <&anx7447_emul0>;
+			ppc = <&nx20p348x_emul0>;
+			chg = <&charger_emul>;
+			usb-mux-chain-0 {
+				compatible = "cros-ec,usb-mux-chain";
+				usb-muxes = <&virtual_mux_0>;
+			};
+		};
+
+		port1@1 {
+			/* We have rt1718s emulator, but use tcpci_emul instead
+			 * for better test integration of the GPIO pin control.
+			 */
+			tcpc = <&rt1718s_emul1>;
+			ppc = <&nx20p348x_emul1>;
+			usb_mux_chain_1_hdmi_db: usb-mux-chain-1-hdmi-db {
+				compatible = "cros-ec,usb-mux-chain";
+				alternative-chain;
+				usb-muxes = <&virtual_mux_1>;
+			};
+		};
+	};
+
+	batteries {
+		default_battery: lgc_ac17a8m {
+			compatible = "lgc,ac17a8m", "battery-smart";
+			/**
+			 * this has to be strictly lower than the desired
+			 * voltage in smart battery emulator (5000mV).
+			 */
+			voltage_min = <4000>;
+		};
+	};
+};
+
+&i2c_ctrl0 {
+	anx7447_emul0: anx7447_emul@2c {
+		compatible = "cros,anx7447-tcpc-emul";
+		status = "okay";
+		reg = <0x2c>;
+		tcpc-flags = <(
+			TCPC_FLAGS_VBUS_MONITOR |
+			TCPC_FLAGS_ALERT_OD |
+			TCPC_FLAGS_CONTROL_VCONN |
+			TCPC_FLAGS_CONTROL_FRS)>;
+	};
+
+	/* TODO: drop this node when the Kconfig dependency is fixed. */
+	tcpci_emul0: tcpci_emul@82 {
+		compatible = "cros,tcpci-generic-emul";
+		status = "okay";
+		reg = <0x82>;
+	};
+
+	nx20p348x_emul0: nx20p348x_emul@71 {
+		compatible = "nxp,nx20p348x";
+		status = "okay";
+		reg = <0x71>;
+		irq-gpios = < &gpio6 7 GPIO_ACTIVE_HIGH>;
+	};
+
+	pi3usb9201_emul0: pi3usb9201@5d {
+		compatible = "pericom,pi3usb9201";
+		reg = <0x5d>;
+		irq = <&int_usb_c0_bc12>;
+	};
+};
+
+&i2c_ctrl3 {
+	status = "okay";
+
+	charger_emul: isl923x@9 {
+		compatible = "cros,isl923x-emul";
+		status = "okay";
+		reg = <0x9>;
+		battery = <&battery>;
+	};
+
+	rt1718s_emul1: rt1718s_emul@2c {
+		compatible = "cros,rt1718s-tcpc-emul", "richtek,rt1718s-tcpc";
+		status = "okay";
+		reg = <0x2c>;
+		tcpc-flags = <(TCPC_FLAGS_ALERT_OD |
+			TCPC_FLAGS_CONTROL_VCONN |
+			TCPC_FLAGS_CONTROL_FRS)>;
+	};
+
+	/* TODO: drop this node when the Kconfig dependency is fixed. */
+	tcpci_emul1: tcpci_emul@82 {
+		compatible = "cros,tcpci-generic-emul";
+		status = "okay";
+		reg = <0x82>;
+	};
+
+	nx20p348x_emul1: nx20p348x_emul@71 {
+	        compatible = "nxp,nx20p348x";
+	        status = "okay";
+	        reg = <0x71>;
+		irq-gpios = < &gpiod 4 GPIO_ACTIVE_HIGH >;
+	};
+};
diff --git a/zephyr/test/kingler/prj.conf b/zephyr/test/kingler/prj.conf
index 17ffd4fb17..bfa73043cd 100644
--- a/zephyr/test/kingler/prj.conf
+++ b/zephyr/test/kingler/prj.conf
@@ -12,6 +12,7 @@ CONFIG_PLATFORM_EC_HOOKS=y
 CONFIG_CROS_EC=y
 CONFIG_PLATFORM_EC=y
 
+CONFIG_PLATFORM_EC_GPIO_INIT_PRIORITY=49
 CONFIG_PLATFORM_EC_DYNAMIC_MOTION_SENSOR_COUNT=y
 CONFIG_PLATFORM_EC_GMR_TABLET_MODE=y
 CONFIG_PLATFORM_EC_TABLET_MODE=y
@@ -23,3 +24,6 @@ CONFIG_PLATFORM_EC_BOARD_VERSION_CBI=y
 CONFIG_EEPROM=y
 CONFIG_EEPROM_SIMULATOR=n
 CONFIG_EMUL_EEPROM_AT2X=y
+
+CONFIG_LOG=y
+CONFIG_LOG_MODE_MINIMAL=y
diff --git a/zephyr/test/kingler/src/fakes.c b/zephyr/test/kingler/src/fakes.c
index 412e02fef9..6c67447e88 100644
--- a/zephyr/test/kingler/src/fakes.c
+++ b/zephyr/test/kingler/src/fakes.c
@@ -9,16 +9,24 @@
 
 FAKE_VOID_FUNC(power_button_interrupt, enum gpio_signal);
 FAKE_VOID_FUNC(button_interrupt, enum gpio_signal);
-FAKE_VOID_FUNC(lid_interrupt, enum gpio_signal);
 FAKE_VOID_FUNC(chipset_reset_request_interrupt, enum gpio_signal);
 FAKE_VOID_FUNC(power_signal_interrupt, enum gpio_signal);
 FAKE_VOID_FUNC(chipset_watchdog_interrupt, enum gpio_signal);
 FAKE_VOID_FUNC(extpower_interrupt, enum gpio_signal);
-FAKE_VOID_FUNC(xhci_interrupt, enum gpio_signal);
 FAKE_VOID_FUNC(switch_interrupt, enum gpio_signal);
+#ifndef CONFIG_TEST_KINGLER_USBC
+FAKE_VOID_FUNC(xhci_interrupt, enum gpio_signal);
+FAKE_VOID_FUNC(lid_interrupt, enum gpio_signal);
+FAKE_VOID_FUNC(usb_a0_interrupt, enum gpio_signal);
 FAKE_VOID_FUNC(tcpc_alert_event, enum gpio_signal);
 FAKE_VOID_FUNC(ppc_interrupt, enum gpio_signal);
 FAKE_VOID_FUNC(bc12_interrupt, enum gpio_signal);
+FAKE_VOID_FUNC(pd_power_supply_reset, int);
+FAKE_VOID_FUNC(pd_set_power_supply_ready, int);
+FAKE_VALUE_FUNC(int, board_set_active_charge_port, int);
+FAKE_VALUE_FUNC(int, pd_snk_is_vbus_provided, int);
+FAKE_VALUE_FUNC(int, pd_check_vconn_swap, int);
+#endif
 FAKE_VOID_FUNC(chipset_warm_reset_interrupt, enum gpio_signal);
 #ifndef CONFIG_TEST_KINGLER_CCD
 FAKE_VOID_FUNC(ccd_interrupt, enum gpio_signal);
diff --git a/zephyr/test/kingler/src/kingler_usbc.c b/zephyr/test/kingler/src/kingler_usbc.c
new file mode 100644
index 0000000000..afd8cdbccd
--- /dev/null
+++ b/zephyr/test/kingler/src/kingler_usbc.c
@@ -0,0 +1,78 @@
+/* Copyright 2023 The ChromiumOS Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "driver/tcpm/tcpm.h"
+#include "ec_app_main.h"
+#include "usb_charge.h"
+#include "usb_pd.h"
+#include "usbc_ppc.h"
+#include "variant_db_detection.h"
+
+#include <zephyr/drivers/gpio/gpio_emul.h>
+#include <zephyr/fff.h>
+#include <zephyr/kernel.h>
+#include <zephyr/logging/log.h>
+#include <zephyr/ztest.h>
+
+#define LOG_LEVEL 0
+LOG_MODULE_REGISTER(npcx_usbc);
+
+FAKE_VALUE_FUNC(enum corsola_db_type, corsola_get_db_type);
+FAKE_VALUE_FUNC(bool, in_interrupt_context);
+FAKE_VOID_FUNC(bmi3xx_interrupt);
+FAKE_VOID_FUNC(hdmi_hpd_interrupt);
+FAKE_VOID_FUNC(ps185_hdmi_hpd_mux_set);
+FAKE_VALUE_FUNC(bool, ps8743_field_update, const struct usb_mux *, uint8_t,
+		uint8_t, uint8_t);
+
+#define FFF_FAKES_LIST(FAKE)         \
+	FAKE(corsola_get_db_type)    \
+	FAKE(in_interrupt_context)   \
+	FAKE(bmi3xx_interrupt)       \
+	FAKE(hdmi_hpd_interrupt)     \
+	FAKE(ps185_hdmi_hpd_mux_set) \
+	FAKE(ps8743_field_update)
+
+struct kingler_usbc_fixture {
+	int place_holder;
+};
+
+static void *kingler_usbc_setup(void)
+{
+	static struct kingler_usbc_fixture f;
+
+	return &f;
+}
+
+static void kingler_usbc_reset_rule_before(const struct ztest_unit_test *test,
+					   void *data)
+{
+	ARG_UNUSED(test);
+	ARG_UNUSED(data);
+	FFF_FAKES_LIST(RESET_FAKE);
+	FFF_RESET_HISTORY();
+}
+
+ZTEST_RULE(kingler_usbc_reset_rule, kingler_usbc_reset_rule_before, NULL);
+ZTEST_SUITE(kingler_usbc, NULL, kingler_usbc_setup, NULL, NULL, NULL);
+
+ZTEST_F(kingler_usbc, test_power_supply)
+{
+	pd_power_supply_reset(0);
+	zassert_equal(0, ppc_is_sourcing_vbus(0));
+	zassert_equal(0, ppc_is_sourcing_vbus(1));
+
+	zassert_equal(EC_SUCCESS, pd_set_power_supply_ready(0));
+	zassert_equal(1, ppc_is_sourcing_vbus(0));
+	zassert_equal(0, ppc_is_sourcing_vbus(1));
+
+	pd_power_supply_reset(0);
+	zassert_equal(0, ppc_is_sourcing_vbus(0));
+	zassert_equal(0, ppc_is_sourcing_vbus(1));
+
+	/* TODO: test C1 port after resolve the PPC emulator always accessing
+	 * the same one with different index.
+	 */
+}
diff --git a/zephyr/test/kingler/testcase.yaml b/zephyr/test/kingler/testcase.yaml
index 04e580fe22..6bfa6f7b7e 100644
--- a/zephyr/test/kingler/testcase.yaml
+++ b/zephyr/test/kingler/testcase.yaml
@@ -1,6 +1,14 @@
 common:
   platform_allow: native_posix
 tests:
+  kingler.usbc:
+    extra_configs:
+    - CONFIG_TEST_KINGLER_USBC=y
+    extra_conf_files:
+    - prj.conf
+    - kingler.usbc.conf
+    extra_dtc_overlay_files:
+    - kingler.usbc.overlay
   kingler.steelix:
     extra_configs:
     - CONFIG_TEST_STEELIX_RUSTY=y