/* Copyright 2020 The ChromiumOS Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

/* Common code for VARIANT_[DEDEDE|KEEBY]_IT8320 configuration */

#include "adc_chip.h"
#include "atomic.h"
#include "common.h"
#include "compile_time_macros.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "i2c.h"
#include "power.h"
#include "registers.h"

#define CPRINTUSB(format, args...) cprints(CC_USBCHARGE, format, ##args)

static void pp3300_a_pgood_low(void)
{
	atomic_clear_bits(&pp3300_a_pgood, 1);

	/* Disable low interrupt while asserted */
	vcmp_enable(VCMP_SNS_PP3300_LOW, 0);

	/* Enable high interrupt */
	vcmp_enable(VCMP_SNS_PP3300_HIGH, 1);

	/*
	 * Call power_signal_interrupt() with a fake GPIO in order for the
	 * chipset task to pick up the change in power sequencing signals.
	 */
	power_signal_interrupt(GPIO_PG_EC_DSW_PWROK);
}

static void pp3300_a_pgood_high(void)
{
	atomic_or(&pp3300_a_pgood, 1);

	/* Disable high interrupt while asserted */
	vcmp_enable(VCMP_SNS_PP3300_HIGH, 0);

	/* Enable low interrupt */
	vcmp_enable(VCMP_SNS_PP3300_LOW, 1);

	/*
	 * Call power_signal_interrupt() with a fake GPIO in order for the
	 * chipset task to pick up the change in power sequencing signals.
	 */
	power_signal_interrupt(GPIO_PG_EC_DSW_PWROK);
}

const struct vcmp_t vcmp_list[] = {
	[VCMP_SNS_PP3300_LOW] = {
		.name = "VCMP_SNS_PP3300_LOW",
		.threshold = 600, /* mV */
		.flag = LESS_EQUAL_THRESHOLD,
		.vcmp_thresh_cb = &pp3300_a_pgood_low,
		.scan_period = VCMP_SCAN_PERIOD_600US,
		.adc_ch = CHIP_ADC_CH0,
	},
	[VCMP_SNS_PP3300_HIGH] = {
		.name = "VCMP_SNS_PP3300_HIGH",
		.threshold = 2700, /* mV */
		.flag = GREATER_THRESHOLD,
		.vcmp_thresh_cb = &pp3300_a_pgood_high,
		.scan_period = VCMP_SCAN_PERIOD_600US,
		.adc_ch = CHIP_ADC_CH0,
	},
};
BUILD_ASSERT(ARRAY_SIZE(vcmp_list) <= CHIP_VCMP_COUNT);
BUILD_ASSERT(ARRAY_SIZE(vcmp_list) == VCMP_COUNT);

#if !defined(BOARD_DIBBI) && !defined(BOARD_TARANZA) && !defined(BOARD_BOXY)
/* I2C Ports */
const struct i2c_port_t i2c_ports[] = {
	{ .name = "eeprom",
	  .port = I2C_PORT_EEPROM,
	  .kbps = 400,
	  .scl = GPIO_EC_I2C_EEPROM_SCL,
	  .sda = GPIO_EC_I2C_EEPROM_SDA },

	{ .name = "battery",
	  .port = I2C_PORT_BATTERY,
	  .kbps = 100,
	  .scl = GPIO_EC_I2C_BATTERY_SCL,
	  .sda = GPIO_EC_I2C_BATTERY_SDA },

#if defined(HAS_TASK_MOTIONSENSE) || defined(BOARD_SHOTZO)
	{ .name = "sensor",
	  .port = I2C_PORT_SENSOR,
	  .kbps = 400,
	  .scl = GPIO_EC_I2C_SENSOR_SCL,
	  .sda = GPIO_EC_I2C_SENSOR_SDA },
#endif

#if CONFIG_USB_PD_PORT_MAX_COUNT > 1
	{ .name = "sub_usbc1",
	  .port = I2C_PORT_SUB_USB_C1,
	  .kbps = 1000,
	  .scl = GPIO_EC_I2C_SUB_USB_C1_SCL,
	  .sda = GPIO_EC_I2C_SUB_USB_C1_SDA },
#endif

	{ .name = "usbc0",
	  .port = I2C_PORT_USB_C0,
	  .kbps = 1000,
	  .scl = GPIO_EC_I2C_USB_C0_SCL,
	  .sda = GPIO_EC_I2C_USB_C0_SDA },
};
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
#endif