1 files changed, 392 insertions, 0 deletions
diff --git a/board/taniks/usbc_config.c b/board/taniks/usbc_config.c
new file mode 100644
index 0000000000..4cdb29b779
--- /dev/null
+++ b/board/taniks/usbc_config.c
@@ -0,0 +1,392 @@
+/* Copyright 2021 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 <stdint.h>
+#include <stdbool.h>
+
+#include "battery.h"
+#include "common.h"
+#include "compile_time_macros.h"
+#include "console.h"
+#include "driver/bc12/pi3usb9201_public.h"
+#include "driver/ppc/nx20p348x.h"
+#include "driver/ppc/syv682x_public.h"
+#include "driver/retimer/bb_retimer_public.h"
+#include "driver/tcpm/nct38xx.h"
+#include "driver/tcpm/ps8xxx_public.h"
+#include "driver/tcpm/tcpci.h"
+#include "ec_commands.h"
+#include "fw_config.h"
+#include "gpio.h"
+#include "gpio_signal.h"
+#include "hooks.h"
+#include "ioexpander.h"
+#include "system.h"
+#include "task.h"
+#include "task_id.h"
+#include "timer.h"
+#include "usbc_config.h"
+#include "usbc_ppc.h"
+#include "usb_charge.h"
+#include "usb_mux.h"
+#include "usb_pd.h"
+#include "usb_pd_tcpm.h"
+
+#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
+#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
+
+#if 0
+/* Debug only! */
+#define CPRINTSUSB(format, args...) cprints(CC_USBPD, format, ## args)
+#define CPRINTFUSB(format, args...) cprintf(CC_USBPD, format, ## args)
+#else
+#define CPRINTSUSB(format, args...)
+#define CPRINTFUSB(format, args...)
+#endif
+
+/* USBC TCPC configuration */
+const struct tcpc_config_t tcpc_config[] = {
+	[USBC_PORT_C0] = {
+		.bus_type = EC_BUS_TYPE_I2C,
+		.i2c_info = {
+			.port = I2C_PORT_USB_C0_TCPC,
+			.addr_flags = NCT38XX_I2C_ADDR1_1_FLAGS,
+		},
+		.drv = &nct38xx_tcpm_drv,
+		.flags = TCPC_FLAGS_TCPCI_REV2_0,
+	},
+	[USBC_PORT_C1] = {
+		.bus_type = EC_BUS_TYPE_I2C,
+		.i2c_info = {
+			.port = I2C_PORT_USB_C1_TCPC,
+			.addr_flags = PS8751_I2C_ADDR1_FLAGS,
+		},
+		.drv = &ps8xxx_tcpm_drv,
+		.flags = TCPC_FLAGS_TCPCI_REV2_0 |
+			 TCPC_FLAGS_TCPCI_REV2_0_NO_VSAFE0V |
+			 TCPC_FLAGS_CONTROL_VCONN,
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(tcpc_config) == USBC_PORT_COUNT);
+BUILD_ASSERT(CONFIG_USB_PD_PORT_MAX_COUNT == USBC_PORT_COUNT);
+
+/* USBC PPC configuration */
+struct ppc_config_t ppc_chips[] = {
+	[USBC_PORT_C0] = {
+		.i2c_port = I2C_PORT_USB_C0_PPC,
+		.i2c_addr_flags = SYV682X_ADDR0_FLAGS,
+		.drv = &syv682x_drv,
+	},
+	[USBC_PORT_C1] = {
+		/* Compatible with Silicon Mitus SM536A0 */
+		.i2c_port = I2C_PORT_USB_C1_PPC,
+		.i2c_addr_flags = NX20P3483_ADDR2_FLAGS,
+		.drv = &nx20p348x_drv,
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(ppc_chips) == USBC_PORT_COUNT);
+
+unsigned int ppc_cnt = ARRAY_SIZE(ppc_chips);
+
+/* USBC mux configuration - Alder Lake includes internal mux */
+
+/*
+ * USB3 DB mux configuration - the top level mux still needs to be set
+ * to the virtual_usb_mux_driver so the AP gets notified of mux changes
+ * and updates the TCSS configuration on state changes.
+ */
+static const struct usb_mux usbc1_usb3_db_retimer = {
+	.usb_port = USBC_PORT_C1,
+	.driver = &tcpci_tcpm_usb_mux_driver,
+	.hpd_update = &ps8xxx_tcpc_update_hpd_status,
+};
+
+const struct usb_mux usb_muxes[] = {
+	[USBC_PORT_C0] = {
+		.usb_port = USBC_PORT_C0,
+		.driver = &virtual_usb_mux_driver,
+		.hpd_update = &virtual_hpd_update,
+	},
+	[USBC_PORT_C1] = {
+		/* PS8815 DB */
+		.usb_port = USBC_PORT_C1,
+		.driver = &virtual_usb_mux_driver,
+		.hpd_update = &virtual_hpd_update,
+		.next_mux = &usbc1_usb3_db_retimer,
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(usb_muxes) == USBC_PORT_COUNT);
+
+/* BC1.2 charger detect configuration */
+const struct pi3usb9201_config_t pi3usb9201_bc12_chips[] = {
+	[USBC_PORT_C0] = {
+		.i2c_port = I2C_PORT_USB_C0_BC12,
+		.i2c_addr_flags = PI3USB9201_I2C_ADDR_3_FLAGS,
+	},
+	[USBC_PORT_C1] = {
+		.i2c_port = I2C_PORT_USB_C1_BC12,
+		.i2c_addr_flags = PI3USB9201_I2C_ADDR_3_FLAGS,
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(pi3usb9201_bc12_chips) == USBC_PORT_COUNT);
+
+/*
+ * USB C0 and C2 uses burnside bridge chips and have their reset
+ * controlled by their respective TCPC chips acting as GPIO expanders.
+ *
+ * ioex_init() is normally called before we take the TCPCs out of
+ * reset, so we need to start in disabled mode, then explicitly
+ * call ioex_init().
+ */
+
+struct ioexpander_config_t ioex_config[] = {
+	[IOEX_C0_NCT38XX] = {
+		.i2c_host_port = I2C_PORT_USB_C0_TCPC,
+		.i2c_addr_flags = NCT38XX_I2C_ADDR1_1_FLAGS,
+		.drv = &nct38xx_ioexpander_drv,
+		.flags = IOEX_FLAGS_DEFAULT_INIT_DISABLED,
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(ioex_config) == CONFIG_IO_EXPANDER_PORT_COUNT);
+
+void config_usb_db_type(void)
+{
+	enum ec_cfg_usb_db_type db_type = ec_cfg_usb_db_type();
+
+	/*
+	 * TODO(b/194515356): implement multiple DB types
+	 */
+	CPRINTS("Configured USB DB type number is %d", db_type);
+}
+
+static void ps8815_reset(void)
+{
+	int val;
+
+	CPRINTS("%s: patching ps8815 registers", __func__);
+
+	if (i2c_read8(I2C_PORT_USB_C1_TCPC,
+		      PS8751_I2C_ADDR1_FLAGS, 0x0f, &val) == EC_SUCCESS)
+		CPRINTS("ps8815: reg 0x0f was %02x", val);
+	else {
+		CPRINTS("delay 10ms to make sure PS8815 is waken from idle");
+		msleep(10);
+	}
+
+
+	if (i2c_write8(I2C_PORT_USB_C1_TCPC,
+		       PS8751_I2C_ADDR1_FLAGS, 0x0f, 0x31) == EC_SUCCESS)
+		CPRINTS("ps8815: reg 0x0f set to 0x31");
+
+	if (i2c_read8(I2C_PORT_USB_C1_TCPC,
+		      PS8751_I2C_ADDR1_FLAGS, 0x0f, &val) == EC_SUCCESS)
+		CPRINTS("ps8815: reg 0x0f now %02x", val);
+}
+
+/**
+ * b/197585292
+ * It's used for early board to check if usb_db is plugged or not.
+ * That's used to avoid TCPC1 initialization abnormal if db isn't
+ * plugged into system.
+ */
+enum usb_db_present {
+	DB_USB_NOT_PRESENT = 0,
+	DB_USB_PRESENT = 1,
+};
+static enum usb_db_present db_usb_hw_pres;
+
+/**
+ * Init hw ps8815 detection and keep it in db_usb_hw_press.
+ * Then, we don't need to keep query ps8815 mcu.
+ */
+static void board_init_ps8815_detection(void)
+{
+	int rv, val;
+
+	CPRINTSUSB("%s", __func__);
+
+	rv = i2c_read8(I2C_PORT_USB_C1_TCPC,
+			PS8751_I2C_ADDR1_FLAGS, 0x00, &val);
+
+	db_usb_hw_pres = (rv == EC_SUCCESS)?DB_USB_PRESENT:DB_USB_NOT_PRESENT;
+
+	if (db_usb_hw_pres == DB_USB_NOT_PRESENT)
+		CPRINTS("DB isn't plugged or something went wrong!");
+}
+
+/**
+ * @return true if ps8815_db is plugged, false if it isn't plugged.
+ */
+static bool board_detect_ps8815_db(void)
+{
+	CPRINTSUSB("%s", __func__);
+
+	/* All dut should plug ps8815 db if board id > 0 */
+	if (get_board_id() > 0)
+		return true;
+
+	if (ec_cfg_usb_db_type() == DB_USB3_PS8815 &&
+		db_usb_hw_pres == DB_USB_PRESENT)
+		return true;
+
+	CPRINTSUSB("No PS8815 DB");
+	return false;
+}
+
+void board_reset_pd_mcu(void)
+{
+	/*
+	 * TODO(b/194618663): figure out correct timing
+	 */
+
+	gpio_set_level(GPIO_USB_C0_TCPC_RST_ODL, 0);
+
+	/*
+	 * (b/202489681): Nx20p3483 cannot sink power after reset ec
+	 * To avoid nx20p3483 cannot sink power after reset ec w/ AC
+	 * only in TCPC1 port, EC shouldn't assert GPIO_USB_C1_RT_RST_R_ODL
+	 * if no battery.
+	 */
+	if (battery_hw_present())
+		gpio_set_level(GPIO_USB_C1_RT_RST_R_ODL, 0);
+
+	/*
+	 * delay for power-on to reset-off and min. assertion time
+	 */
+	msleep(GENERIC_MAX(PS8XXX_RESET_DELAY_MS,
+			   PS8815_PWR_H_RST_H_DELAY_MS));
+
+	gpio_set_level(GPIO_USB_C0_TCPC_RST_ODL, 1);
+	gpio_set_level(GPIO_USB_C1_RT_RST_R_ODL, 1);
+
+	/* wait for chips to come up */
+	msleep(PS8815_FW_INIT_DELAY_MS);
+	ps8815_reset();
+
+	/*
+	 * board_init_ps8815_detection should be called before
+	 * board_get_usb_pd_port_count(). usb_mux_hpd_update can check
+	 * pd port count.
+	 */
+	board_init_ps8815_detection();
+	usb_mux_hpd_update(USBC_PORT_C1, USB_PD_MUX_HPD_LVL_DEASSERTED |
+				USB_PD_MUX_HPD_IRQ_DEASSERTED);
+}
+
+static void board_tcpc_init(void)
+{
+	CPRINTSUSB("%s: board id = %d", __func__, get_board_id());
+
+	/* Don't reset TCPCs after initial reset */
+	if (!system_jumped_late()) {
+		board_reset_pd_mcu();
+
+		/*
+		 * These IO expander pins are implemented using the
+		 * C0/C2 TCPC, so they must be set up after the TCPC has
+		 * been taken out of reset.
+		 */
+		ioex_init(0);
+	}
+
+	CPRINTSUSB("Enable GPIO INT");
+
+	/* Enable PPC interrupts. */
+	gpio_enable_interrupt(GPIO_USB_C0_PPC_INT_ODL);
+	if (board_detect_ps8815_db())
+		gpio_enable_interrupt(GPIO_USB_C1_PPC_INT_ODL);
+
+	/* Enable TCPC interrupts. */
+	gpio_enable_interrupt(GPIO_USB_C0_TCPC_INT_ODL);
+	if (board_detect_ps8815_db())
+		gpio_enable_interrupt(GPIO_USB_C1_TCPC_INT_ODL);
+
+	/* Enable BC1.2 interrupts. */
+	gpio_enable_interrupt(GPIO_USB_C0_BC12_INT_ODL);
+	if (board_detect_ps8815_db())
+		gpio_enable_interrupt(GPIO_USB_C1_BC12_INT_ODL);
+}
+DECLARE_HOOK(HOOK_INIT, board_tcpc_init, HOOK_PRIO_INIT_CHIPSET);
+
+uint16_t tcpc_get_alert_status(void)
+{
+	uint16_t status = 0;
+
+	if (gpio_get_level(GPIO_USB_C0_TCPC_INT_ODL) == 0)
+		status |= PD_STATUS_TCPC_ALERT_0;
+
+	if (gpio_get_level(GPIO_USB_C1_TCPC_INT_ODL) == 0)
+		status |= PD_STATUS_TCPC_ALERT_1;
+
+	return status;
+}
+
+int ppc_get_alert_status(int port)
+{
+	if (port == USBC_PORT_C0)
+		return gpio_get_level(GPIO_USB_C0_PPC_INT_ODL) == 0;
+
+	if (port == USBC_PORT_C1)
+		return gpio_get_level(GPIO_USB_C1_PPC_INT_ODL) == 0;
+
+	return 0;
+}
+
+void tcpc_alert_event(enum gpio_signal signal)
+{
+	switch (signal) {
+	case GPIO_USB_C0_TCPC_INT_ODL:
+		schedule_deferred_pd_interrupt(USBC_PORT_C0);
+		break;
+	case GPIO_USB_C1_TCPC_INT_ODL:
+		schedule_deferred_pd_interrupt(USBC_PORT_C1);
+		break;
+	default:
+		break;
+	}
+}
+
+void bc12_interrupt(enum gpio_signal signal)
+{
+	switch (signal) {
+	case GPIO_USB_C0_BC12_INT_ODL:
+		task_set_event(TASK_ID_USB_CHG_P0, USB_CHG_EVENT_BC12);
+		break;
+	case GPIO_USB_C1_BC12_INT_ODL:
+		task_set_event(TASK_ID_USB_CHG_P1, USB_CHG_EVENT_BC12);
+		break;
+	default:
+		break;
+	}
+}
+
+void ppc_interrupt(enum gpio_signal signal)
+{
+	switch (signal) {
+	case GPIO_USB_C0_PPC_INT_ODL:
+		syv682x_interrupt(USBC_PORT_C0);
+		break;
+	case GPIO_USB_C1_PPC_INT_ODL:
+		nx20p348x_interrupt(USBC_PORT_C1);
+		break;
+	default:
+		break;
+	}
+}
+
+__override bool board_is_dts_port(int port)
+{
+	return port == USBC_PORT_C0;
+}
+
+__override uint8_t board_get_usb_pd_port_count(void)
+{
+	CPRINTSUSB("%s is called by task_id:%d",  __func__, task_get_current());
+
+	if (board_detect_ps8815_db())
+		return CONFIG_USB_PD_PORT_MAX_COUNT;
+
+	return CONFIG_USB_PD_PORT_MAX_COUNT - 1;
+}