/* Copyright 2019 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.
 */

/* Intel TGL-U-RVP-ITE board-specific configuration */

#include "button.h"
#include "charger.h"
#include "driver/charger/isl9241.h"
#include "driver/retimer/bb_retimer_public.h"
#include "extpower.h"
#include "i2c.h"
#include "intc.h"
#include "it83xx_pd.h"
#include "lid_switch.h"
#include "power.h"
#include "power/icelake.h"
#include "power_button.h"
#include "switch.h"
#include "system.h"
#include "tablet_mode.h"
#include "uart.h"
#include "usb_mux.h"
#include "usb_pd_tcpm.h"

#include "gpio_list.h"

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

/* Mutex for shared NVM access */
static struct mutex bb_nvm_mutex;

/* TCPC gpios */
const struct tcpc_gpio_config_t tcpc_gpios[] = {
	[TYPE_C_PORT_0] = {
		.vbus = {
			.pin = GPIO_USB_C0_VBUS_INT,
			.pin_pol = 1,
		},
		.src = {
			.pin = GPIO_USB_C0_SRC_EN,
			.pin_pol = 1,
		},
		.snk = {
			.pin = GPIO_USB_C0_SNK_EN_L,
			.pin_pol = 0,
		},
		.vconn = {
			.cc1_pin = GPIO_USB_C0_CC1_VCONN_EN,
			.cc2_pin = GPIO_USB_C0_CC2_VCONN_EN,
			.pin_pol = 1,
		},
		.src_ilim = {
			.pin = GPIO_USB_C0_SRC_HI_ILIM,
			.pin_pol = 1,
		},
	},
	[TYPE_C_PORT_1] = {
		.vbus = {
			.pin = GPIO_USB_C1_VBUS_INT,
			.pin_pol = 1,
		},
		.src = {
			.pin = GPIO_USB_C1_SRC_EN,
			.pin_pol = 1,
		},
		.snk = {
			.pin = GPIO_USB_C1_SNK_EN_L,
			.pin_pol = 0,
		},
		.vconn = {
			.cc1_pin = GPIO_USB_C1_CC1_VCONN_EN,
			.cc2_pin = GPIO_USB_C1_CC2_VCONN_EN,
			.pin_pol = 1,
		},
		.src_ilim = {
			.pin = GPIO_USB_C1_SRC_HI_ILIM,
			.pin_pol = 1,
		},
	},
};
BUILD_ASSERT(ARRAY_SIZE(tcpc_gpios) == CONFIG_USB_PD_PORT_MAX_COUNT);

/* USB-C TPCP Configuration */
const struct tcpc_config_t tcpc_config[] = {
	[TYPE_C_PORT_0] = {
		.bus_type = EC_BUS_TYPE_EMBEDDED,
		/* TCPC is embedded within EC so no i2c config needed */
		.drv = &it83xx_tcpm_drv,
	},
	[TYPE_C_PORT_1] = {
		.bus_type = EC_BUS_TYPE_EMBEDDED,
		/* TCPC is embedded within EC so no i2c config needed */
		.drv = &it83xx_tcpm_drv,
	},
};
BUILD_ASSERT(ARRAY_SIZE(tcpc_config) == CONFIG_USB_PD_PORT_MAX_COUNT);

/* BB Retimers configuration */
const struct bb_usb_control bb_controls[] = {
	[TYPE_C_PORT_0] = {
		.usb_ls_en_gpio = GPIO_USB_C0_LS_EN,
		.retimer_rst_gpio = GPIO_USB_C0_RETIMER_RST,
	},
	[TYPE_C_PORT_1] = {
		.usb_ls_en_gpio = GPIO_USB_C1_LS_EN,
		.retimer_rst_gpio = GPIO_USB_C1_RETIMER_RST,
	},
};
BUILD_ASSERT(ARRAY_SIZE(bb_controls) == CONFIG_USB_PD_PORT_MAX_COUNT);

/* USB retimer Configuration */
struct usb_mux usbc0_tcss_usb_mux = {
	.usb_port = TYPE_C_PORT_0,
	.driver = &virtual_usb_mux_driver,
	.hpd_update = &virtual_hpd_update,
};

struct usb_mux usbc1_tcss_usb_mux = {
	.usb_port = TYPE_C_PORT_1,
	.driver = &virtual_usb_mux_driver,
	.hpd_update = &virtual_hpd_update,
};

/* USB muxes Configuration */
const struct usb_mux usb_muxes[] = {
	[TYPE_C_PORT_0] = {
		.usb_port = TYPE_C_PORT_0,
		.next_mux = &usbc0_tcss_usb_mux,
		.driver = &bb_usb_retimer,
		.hpd_update = bb_retimer_hpd_update,
		.i2c_port = I2C_PORT0_BB_RETIMER,
		.i2c_addr_flags = I2C_PORT0_BB_RETIMER_ADDR,
	},
	[TYPE_C_PORT_1] = {
		.usb_port = TYPE_C_PORT_1,
		.next_mux = &usbc1_tcss_usb_mux,
		.driver = &bb_usb_retimer,
		.hpd_update = bb_retimer_hpd_update,
		.i2c_port = I2C_PORT1_BB_RETIMER,
		.i2c_addr_flags = I2C_PORT1_BB_RETIMER_ADDR,
	},
};
BUILD_ASSERT(ARRAY_SIZE(usb_muxes) == CONFIG_USB_PD_PORT_MAX_COUNT);

/* I2C ports */
const struct i2c_port_t i2c_ports[] = {
	/* Flash EC */
	[I2C_CHAN_FLASH] = {
		.name = "chan-A",
		.port = IT83XX_I2C_CH_A,
		.kbps = 100,
		.scl = GPIO_I2C_A_SCL,
		.sda = GPIO_I2C_A_SDA,
	},
	/*
	 * Port-80 Display, Charger, Battery, IO-expanders, EEPROM,
	 * IMVP9, AUX-rail, power-monitor.
	 */
	[I2C_CHAN_BATT_CHG] = {
		.name = "batt_chg",
		.port = IT83XX_I2C_CH_B,
		.kbps = 100,
		.scl = GPIO_I2C_B_SCL,
		.sda = GPIO_I2C_B_SDA,
	},
	/* Retimers, PDs */
	[I2C_CHAN_RETIMER] = {
		.name = "retimer",
		.port = IT83XX_I2C_CH_E,
		.kbps = 100,
		.scl = GPIO_I2C_E_SCL,
		.sda = GPIO_I2C_E_SDA,
	},
};
BUILD_ASSERT(ARRAY_SIZE(i2c_ports) == I2C_CHAN_COUNT);
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);

/* Charger Chips */
const struct charger_config_t chg_chips[] = {
	{
		.i2c_port = I2C_PORT_CHARGER,
		.i2c_addr_flags = ISL9241_ADDR_FLAGS,
		.drv = &isl9241_drv,
	},
};

/******************************************************************************/
/* PWROK signal configuration */
/*
 * On TGLRVP the ALL_SYS_PWRGD, VCCST_PWRGD, PCH_PWROK, and SYS_PWROK
 * signals are handled by the board. No EC control needed.
 */
const struct intel_x86_pwrok_signal pwrok_signal_assert_list[] = {};
const int pwrok_signal_assert_count = ARRAY_SIZE(pwrok_signal_assert_list);

const struct intel_x86_pwrok_signal pwrok_signal_deassert_list[] = {};
const int pwrok_signal_deassert_count = ARRAY_SIZE(pwrok_signal_assert_list);

/*
 * Returns board information (board id[7:0] and Fab id[15:8]) on success
 * -1 on error.
 */
int board_get_version(void)
{
	int port0, port1;
	int fab_id, board_id, bom_id;

	if (ioexpander_read_intelrvp_version(&port0, &port1))
		return -1;
	/*
	 * Port0: bit 0   - BOM ID(2)
	 *        bit 2:1 - FAB ID(1:0) + 1
	 * Port1: bit 7:6 - BOM ID(1:0)
	 *        bit 5:0 - BOARD ID(5:0)
	 */
	bom_id = ((port1 & 0xC0) >> 6) | ((port0 & 0x01) << 2);
	fab_id = ((port0 & 0x06) >> 1) + 1;
	board_id = port1 & 0x3F;

	CPRINTS("BID:0x%x, FID:0x%x, BOM:0x%x", board_id, fab_id, bom_id);

	return board_id | (fab_id << 8);
}

__override int bb_retimer_power_enable(const struct usb_mux *me, bool enable)
{
	const struct bb_usb_control *control = &bb_controls[me->usb_port];

	/*
	 * LSx based F/W updating is a POR, however to avoid the rework on
	 * RVP retain the FORCE_PWR GPIO with EC.
	 */
	enum gpio_signal force_power_gpio = me->usb_port ?
		GPIO_USB_C1_RETIMER_FORCE_PWR : GPIO_USB_C0_RETIMER_FORCE_PWR;

	/* handle retimer's power domain */
	if (enable) {
		/*
		 * BB retimer NVM can be shared between multiple ports, hence
		 * lock enabling the retimer until the current retimer request
		 * is complete.
		 */
		mutex_lock(&bb_nvm_mutex);

		gpio_set_level(control->usb_ls_en_gpio, 1);
		/*
		 * Tpw, minimum time from VCC to RESET_N de-assertion is 100us.
		 * For boards that don't provide a load switch control, the
		 * retimer_init() function ensures power is up before calling
		 * this function.
		 */
		msleep(1);
		gpio_set_level(control->retimer_rst_gpio, 1);
		msleep(10);
		gpio_set_level(force_power_gpio, 1);

		/* Allow 20ms time for the retimer to be initialized. */
		msleep(20);

		mutex_unlock(&bb_nvm_mutex);
	} else {
		gpio_set_level(force_power_gpio, 0);
		msleep(1);
		gpio_set_level(control->retimer_rst_gpio, 0);
		msleep(1);
		gpio_set_level(control->usb_ls_en_gpio, 0);
	}
	return EC_SUCCESS;
}