/* Copyright 2022 The ChromiumOS Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "common.h"
#include "compile_time_macros.h"
#include "console.h"
#include "driver/bc12/pi3usb9201_public.h"
#include "driver/ppc/nx20p348x.h"
#include "driver/tcpm/ps8xxx_public.h"
#include "driver/tcpm/tcpci.h"
#include "ec_commands.h"
#include "gpio.h"
#include "gpio_signal.h"
#include "hooks.h"
#include "system.h"
#include "task.h"
#include "task_id.h"
#include "timer.h"
#include "usb_charge.h"
#include "usb_mux.h"
#include "usb_pd.h"
#include "usb_pd_tcpm.h"
#include "usbc_config.h"
#include "usbc_ppc.h"

#include <stdbool.h>
#include <stdint.h>

#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ##args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ##args)

/* 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 = PS8XXX_I2C_ADDR1_FLAGS,
		},
		.drv = &ps8xxx_tcpm_drv,
		.flags = TCPC_FLAGS_TCPCI_REV2_0 |
			 TCPC_FLAGS_TCPCI_REV2_0_NO_VSAFE0V,
	},
	[USBC_PORT_C1] = {
		.bus_type = EC_BUS_TYPE_I2C,
		.i2c_info = {
			.port = I2C_PORT_USB_C1_TCPC,
			.addr_flags = PS8XXX_I2C_ADDR2_FLAGS,
		},
		.drv = &ps8xxx_tcpm_drv,
		.flags = TCPC_FLAGS_TCPCI_REV2_0 |
			 TCPC_FLAGS_TCPCI_REV2_0_NO_VSAFE0V,
	},
};
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] = {
		/* Compatible with Silicon Mitus SM5360A */
		.i2c_port = I2C_PORT_USB_C0_PPC,
		.i2c_addr_flags = NX20P3483_ADDR2_FLAGS,
		.drv = &nx20p348x_drv,
	},
	[USBC_PORT_C1] = {
		/* Compatible with Silicon Mitus SM5360A */
		.i2c_port = I2C_PORT_USB_C1_PPC,
		.i2c_addr_flags = NX20P3483_ADDR3_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 */
static const struct usb_mux_chain usbc0_tcss_usb_mux = {
	.mux =
		&(const struct usb_mux){
			.usb_port = USBC_PORT_C0,
			.driver = &tcpci_tcpm_usb_mux_driver,
			.hpd_update = &ps8xxx_tcpc_update_hpd_status,
		},
};
static const struct usb_mux_chain usbc1_tcss_usb_mux = {
	.mux =
		&(const struct usb_mux){
			.usb_port = USBC_PORT_C1,
			.driver = &tcpci_tcpm_usb_mux_driver,
			.hpd_update = &ps8xxx_tcpc_update_hpd_status,
		},
};

const struct usb_mux_chain usb_muxes[] = {
	[USBC_PORT_C0] = {
		.mux = &(const struct usb_mux) {
			.usb_port = USBC_PORT_C0,
			.driver = &virtual_usb_mux_driver,
			.hpd_update = &virtual_hpd_update,
		},
		.next = &usbc0_tcss_usb_mux,
	},
	[USBC_PORT_C1] = {
		.mux = &(const struct usb_mux) {
			.usb_port = USBC_PORT_C1,
			.driver = &virtual_usb_mux_driver,
			.hpd_update = &virtual_hpd_update,
		},
		.next = &usbc1_tcss_usb_mux,
	},
};
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_2_FLAGS,
	},
};
BUILD_ASSERT(ARRAY_SIZE(pi3usb9201_bc12_chips) == USBC_PORT_COUNT);

static void ps8815_reset(int port)
{
	int val;
	int i2c_port;
	uint16_t i2c_addr_flags;
	enum gpio_signal ps8xxx_rst_odl;

	if (port == USBC_PORT_C0) {
		ps8xxx_rst_odl = GPIO_USB_C0_RT_RST_L;
		i2c_port = I2C_PORT_USB_C0_TCPC;
		i2c_addr_flags = PS8XXX_I2C_ADDR1_FLAGS;
	} else if (port == USBC_PORT_C1) {
		ps8xxx_rst_odl = GPIO_USB_C1_RT_RST_L;
		i2c_port = I2C_PORT_USB_C1_TCPC;
		i2c_addr_flags = PS8XXX_I2C_ADDR2_FLAGS;
	} else {
		return;
	}

	gpio_set_level(ps8xxx_rst_odl, 0);
	msleep(GENERIC_MAX(PS8XXX_RESET_DELAY_MS, PS8815_PWR_H_RST_H_DELAY_MS));
	gpio_set_level(ps8xxx_rst_odl, 1);
	msleep(PS8815_FW_INIT_DELAY_MS);

	CPRINTS("[C%d] %s: patching ps8815 registers", port, __func__);

	if (i2c_read8(i2c_port, i2c_addr_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, i2c_addr_flags, 0x0f, 0x31) == EC_SUCCESS)
		CPRINTS("ps8815: reg 0x0f set to 0x31");

	if (i2c_read8(i2c_port, i2c_addr_flags, 0x0f, &val) == EC_SUCCESS)
		CPRINTS("ps8815: reg 0x0f now %02x", val);
}

void board_reset_pd_mcu(void)
{
	ps8815_reset(USBC_PORT_C0);
	usb_mux_hpd_update(USBC_PORT_C0, USB_PD_MUX_HPD_LVL_DEASSERTED |
						 USB_PD_MUX_HPD_IRQ_DEASSERTED);
	ps8815_reset(USBC_PORT_C1);
	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)
{
	/* Don't reset TCPCs after initial reset */
	if (!system_jumped_late()) {
		board_reset_pd_mcu();
	}

	/* Enable PPC interrupts. */
	gpio_enable_interrupt(GPIO_USB_C0_PPC_INT_ODL);
	gpio_enable_interrupt(GPIO_USB_C1_PPC_INT_ODL);

	/* Enable TCPC interrupts. */
	gpio_enable_interrupt(GPIO_USB_C0_TCPC_INT_ODL);
	gpio_enable_interrupt(GPIO_USB_C1_TCPC_INT_ODL);

	/* Enable BC1.2 interrupts. */
	gpio_enable_interrupt(GPIO_USB_C0_BC12_INT_ODL);
	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;
	else 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:
		usb_charger_task_set_event(0, USB_CHG_EVENT_BC12);
		break;
	case GPIO_USB_C1_BC12_INT_ODL:
		usb_charger_task_set_event(1, USB_CHG_EVENT_BC12);
		break;
	default:
		break;
	}
}

void ppc_interrupt(enum gpio_signal signal)
{
	switch (signal) {
	case GPIO_USB_C0_PPC_INT_ODL:
		nx20p348x_interrupt(USBC_PORT_C0);
		break;
	case GPIO_USB_C1_PPC_INT_ODL:
		nx20p348x_interrupt(USBC_PORT_C1);
		break;
	default:
		break;
	}
}

void retimer_interrupt(enum gpio_signal signal)
{
	/*
	 * TODO(b/179513527): add USB-C support
	 */
}

__override bool board_is_dts_port(int port)
{
	return port == USBC_PORT_C0;
}