asurada: enable C0/C1 USBPD

This CL enable it81202 on-chip TCPC at C0 and C1 port.
The functionality is not completed yet (TODO: PPC).

C0: on the main board.
C1: on the subboard.

BRANCH=master
BUG=b:152562604
TEST=ensure C0 and C1 can do PD-comm (SNK and SRC)

Signed-off-by: Eric Yilun Lin <yllin@chromium.org>
Change-Id: Ia8a2e557fd376a05f422bc1139abfd78be0c2b58
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2192466
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
Reviewed-by: Ayo Wu <ayowu@google.com>

5 files changed, 135 insertions, 8 deletions

diff --git a/board/asurada/board.c b/board/asurada/board.c
index 1365ecb351..b6f5b63f8b 100644
--- a/board/asurada/board.c
+++ b/board/asurada/board.c
@@ -11,8 +11,8 @@
 #include "chipset.h"
 #include "common.h"
 #include "console.h"
-#include "chip/it83xx/intc.h"
 #include "driver/charger/isl923x.h"
+#include "driver/tcpm/it83xx_pd.h"
 #include "extpower.h"
 #include "gpio.h"
 #include "hooks.h"
@@ -27,6 +27,11 @@
 #include "tablet_mode.h"
 #include "timer.h"
 #include "uart.h"
+#include "usb_mux.h"
+#include "usb_pd_tcpm.h"
+
+#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
+#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)
 
 #define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
 #define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)
@@ -139,11 +144,66 @@ static void x_ec_interrupt(enum gpio_signal signal)
 	/* TODO: implement this */
 }
 
+/* TCPC */
+const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_MAX_COUNT] = {
+	{
+		.bus_type = EC_BUS_TYPE_EMBEDDED,
+		/* TCPC is embedded within EC so no i2c config needed */
+		.drv = &it83xx_tcpm_drv,
+		/* Alert is active-low, push-pull */
+		.flags = 0,
+	},
+	{
+		.bus_type = EC_BUS_TYPE_EMBEDDED,
+		/* TCPC is embedded within EC so no i2c config needed */
+		.drv = &it83xx_tcpm_drv,
+		/* Alert is active-low, push-pull */
+		.flags = 0,
+	},
+};
+
+/* USB Mux */
+const struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_MAX_COUNT] = {
+};
+
+uint16_t tcpc_get_alert_status(void)
+{
+	/*
+	 * C0 & C1: TCPC is embedded in the EC and processes interrupts in the
+	 * chip code (it83xx/intc.c)
+	 */
+	return 0;
+}
+
+void board_reset_pd_mcu(void)
+{
+	/*
+	 * C0 & C1: TCPC is embedded in the EC and processes interrupts in the
+	 * chip code (it83xx/intc.c)
+	 */
+}
+
 int board_get_version(void)
 {
 	return 0;
 }
 
+int board_set_active_charge_port(int charge_port)
+{
+	CPRINTS("New chg p%d", charge_port);
+
+	return 0;
+}
+
+void board_set_charge_limit(int port, int supplier, int charge_ma,
+			    int max_ma, int charge_mv)
+{
+}
+
+void board_pd_vconn_ctrl(int port, enum usbpd_cc_pin cc_pin, int enabled)
+{
+}
+
 /* Sub-board */
 
 static enum board_sub_board board_get_sub_board(void)
@@ -154,10 +214,18 @@ static enum board_sub_board board_get_sub_board(void)
 		return sub;
 
 	/* HDMI board has external pull high. */
-	if (gpio_get_level(GPIO_EC_X_GPIO3))
+	if (gpio_get_level(GPIO_EC_X_GPIO3)) {
 		sub = SUB_BOARD_HDMI;
-	else
+	} else {
 		sub = SUB_BOARD_TYPEC;
+		/* EC_X_GPIO1 */
+		gpio_set_flags(GPIO_USB_C1_FRS_EN, GPIO_OUT_LOW);
+		/* X_EC_GPIO2 */
+		gpio_set_flags(GPIO_USB_C1_PPC_INT_ODL,
+			       GPIO_INT_BOTH | GPIO_PULL_UP);
+		/* EC_X_GPIO3 */
+		gpio_set_flags(GPIO_USB_C1_DP_IN_HPD, GPIO_OUT_LOW);
+	}
 
 	CPRINTS("Detect %s SUB", sub == SUB_BOARD_HDMI ? "HDMI" : "TYPEC");
 	return sub;
@@ -169,3 +237,11 @@ static void sub_board_init(void)
 }
 DECLARE_HOOK(HOOK_INIT, sub_board_init, HOOK_PRIO_INIT_I2C - 1);
 
+__override uint8_t board_get_usb_pd_port_count(void)
+{
+	if (board_get_sub_board() == SUB_BOARD_TYPEC)
+		return CONFIG_USB_PD_PORT_MAX_COUNT;
+	else
+		return CONFIG_USB_PD_PORT_MAX_COUNT - 1;
+}
+
diff --git a/board/asurada/board.h b/board/asurada/board.h
index 8eaa99ccb9..f97bbb2083 100644
--- a/board/asurada/board.h
+++ b/board/asurada/board.h
@@ -30,9 +30,6 @@
 #define CONFIG_BATTERY_PRESENT_GPIO GPIO_EC_BATT_PRES_ODL
 #define CONFIG_BATTERY_SMART
 
-/* BC12 */
-/* #define CONFIG_BC12_DETECT_PI3USB9201 */
-
 /* Charger */
 #define CONFIG_CHARGER
 #define CONFIG_CHARGER_INPUT_CURRENT 512
@@ -41,7 +38,7 @@
 #define CONFIG_CHARGER_SENSE_RESISTOR_AC 20 /* BOARD_RS1 */
 #define CONFIG_CHARGER_SENSE_RESISTOR 10 /* BOARD_RS2 */
 #define CONFIG_CHARGER_OTG
-#define CONFIG_CHARGE_RAMP_HW
+#define CONFIG_CHARGE_MANAGER
 
 /* Chipset */
 
@@ -59,6 +56,32 @@
 #define I2C_PORT_BATTERY IT83XX_I2C_CH_A
 
 /* PD / USB-C */
+#define CONFIG_USBC_SS_MUX
+#define CONFIG_USBC_VCONN
+#define CONFIG_USBC_VCONN_SWAP
+#define CONFIG_USB_PD_ALT_MODE
+#define CONFIG_USB_PD_ALT_MODE_DFP
+#define CONFIG_USB_PD_DEBUG_LEVEL 3
+#define CONFIG_USB_PD_DECODE_SOP
+#define CONFIG_USB_PD_DUAL_ROLE
+#define CONFIG_USB_PD_ITE_ACTIVE_PORT_COUNT 2
+#define CONFIG_USB_PD_LOGGING
+#define CONFIG_USB_PD_PORT_MAX_COUNT 2
+#define CONFIG_USB_PD_TCPMV1
+#define CONFIG_USB_PD_TCPM_ITE_ON_CHIP
+#define CONFIG_USB_PD_TCPM_TCPCI
+#define CONFIG_USB_PD_TRY_SRC
+#define CONFIG_USB_PD_VBUS_MEASURE_NOT_PRESENT /* TODO: */
+#define CONFIG_USB_PID 0x5566  /* TODO: update PID */
+#define CONFIG_USB_POWER_DELIVERY
+
+#define PD_MAX_CURRENT_MA 3000
+#define PD_MAX_VOLTAGE_MV 20000
+#define PD_OPERATING_POWER_MW 15000
+#define PD_MAX_POWER_MW 45000
+#define PD_POWER_SUPPLY_TURN_ON_DELAY  30000  /* us */
+#define PD_POWER_SUPPLY_TURN_OFF_DELAY 250000 /* us */
+#define PD_VCONN_SWAP_DELAY 5000 /* us */
 
 /* Optional console commands */
 #define CONFIG_CMD_FLASH
@@ -124,6 +147,7 @@ enum board_sub_board {
 	SUB_BOARD_COUNT,
 };
 
+void board_reset_pd_mcu(void);
 int board_get_version(void);
 
 #endif /* !__ASSEMBLER__ */
diff --git a/board/asurada/build.mk b/board/asurada/build.mk
index 353a53559e..ab67acde17 100644
--- a/board/asurada/build.mk
+++ b/board/asurada/build.mk
@@ -10,4 +10,4 @@ CHIP:=it83xx
 CHIP_FAMILY:=it8xxx2
 CHIP_VARIANT:=it81202ax_1024
 
-board-y=board.o battery.o
+board-y=board.o battery.o usb_pd_policy.o
diff --git a/board/asurada/ec.tasklist b/board/asurada/ec.tasklist
index 774e0337a8..d46081d494 100644
--- a/board/asurada/ec.tasklist
+++ b/board/asurada/ec.tasklist
@@ -13,7 +13,10 @@
 	TASK_ALWAYS(HOOKS, hook_task, NULL, VENTI_TASK_STACK_SIZE) \
 	TASK_NOTEST(CHIPSET, chipset_task, NULL, VENTI_TASK_STACK_SIZE) \
 	TASK_ALWAYS(CHARGER, charger_task, NULL, VENTI_TASK_STACK_SIZE) \
+	TASK_NOTEST(PDCMD, pd_command_task, NULL, 1024) \
 	TASK_ALWAYS(HOSTCMD, host_command_task, NULL, 1024) \
 	TASK_ALWAYS(CONSOLE, console_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_NOTEST(KEYSCAN, keyboard_scan_task, NULL, TASK_STACK_SIZE) \
+	TASK_ALWAYS(PD_C0, pd_task, NULL, 1280) \
+	TASK_ALWAYS(PD_C1, pd_task, NULL, 1280) \
 
diff --git a/board/asurada/usb_pd_policy.c b/board/asurada/usb_pd_policy.c
new file mode 100644
index 0000000000..33c659708f
--- /dev/null
+++ b/board/asurada/usb_pd_policy.c
@@ -0,0 +1,24 @@
+/* Copyright 2020 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include "usb_pd.h"
+
+int pd_snk_is_vbus_provided(int port)
+{
+	return 0;
+}
+
+void pd_power_supply_reset(int port)
+{
+}
+
+int pd_check_vconn_swap(int port)
+{
+	return 0;
+}
+
+int pd_set_power_supply_ready(int port)
+{
+	return 0;
+}