board/pit/board.c

/* Copyright (c) 2013 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.
 */
/* Pit board-specific configuration */

#include "battery.h"
#include "chipset.h"
#include "common.h"
#include "extpower.h"
#include "gpio.h"
#include "i2c.h"
#include "keyboard_scan.h"
#include "keyboard_raw.h"
#include "lid_switch.h"
#include "pmu_tpschrome.h"
#include "power.h"
#include "registers.h"
#include "spi.h"
#include "timer.h"
#include "task.h"
#include "util.h"

#define GPIO_KB_INPUT  (GPIO_INPUT | GPIO_PULL_UP | GPIO_INT_BOTH)
#define GPIO_KB_OUTPUT GPIO_ODR_HIGH

#include "gpio_list.h"

/* Battery temperature ranges in degrees C */
static const struct battery_info info = {
	.start_charging_min_c = 0,
	.start_charging_max_c = 45,
	.charging_min_c       = 0,
	.charging_max_c       = 60,
	.discharging_min_c    = -20,
	.discharging_max_c    = 70,
};

const struct battery_info *battery_get_info(void)
{
	return &info;
}

/* I2C ports */
const struct i2c_port_t i2c_ports[] = {
	{"master", I2C_PORT_MASTER, 100, GPIO_I2C1_SCL, GPIO_I2C1_SDA},
};
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);

struct keyboard_scan_config keyscan_config = {
	.output_settle_us = 40,
	.debounce_down_us = 6 * MSEC,
	.debounce_up_us = 30 * MSEC,
	.scan_period_us = 1500,
	.min_post_scan_delay_us = 1000,
	.poll_timeout_us = SECOND,
	.actual_key_mask = {
		0x14, 0xff, 0xff, 0xff, 0xff, 0xf5, 0xff,
		0xa4, 0xff, 0xf6, 0x55, 0xfa, 0xc8  /* full set */
	},
};

int pmu_board_init(void)
{
	int ver, failure = 0;

	/* Set fast charging timeout to 6 hours*/
	if (!failure)
		failure = pmu_set_fastcharge(TIMEOUT_6HRS);
	/* Enable external gpio CHARGER_EN control */
	if (!failure)
		failure = pmu_enable_ext_control(1);
	/* Disable force charging */
	if (!failure)
		failure = pmu_enable_charger(0);

	/* Set NOITERM bit */
	if (!failure)
		failure = pmu_low_current_charging(1);

	/*
	 * High temperature charging
	 *   termination voltage: 2.1V
	 *   termination current: 100%
	 */
	if (!failure)
		failure = pmu_set_term_voltage(RANGE_T34, TERM_V2100);
	if (!failure)
		failure = pmu_set_term_current(RANGE_T34, TERM_I1000);
	/*
	 * Standard temperature charging
	 *   termination voltage: 2.1V
	 *   termination current: 100%
	 */
	if (!failure)
		failure = pmu_set_term_voltage(RANGE_T23, TERM_V2100);
	if (!failure)
		failure = pmu_set_term_current(RANGE_T23, TERM_I1000);

	/*
	 * Ignore TPSCHROME NTC reading in T40. This is snow board specific
	 * setting. Check:
	 *   http://crosbug.com/p/12221
	 *   http://crosbug.com/p/13171
	 */
	if (!failure)
		failure = pmu_set_term_voltage(RANGE_T40, TERM_V2100);
	if (!failure)
		failure = pmu_set_term_current(RANGE_T40, TERM_I1000);

	/* Workaround init values before ES3 */
	if (pmu_version(&ver) || ver < 3) {
		/* Termination current: 75% */
		if (!failure)
			failure = pmu_set_term_current(RANGE_T34, TERM_I0750);
		if (!failure)
			failure = pmu_set_term_current(RANGE_T23, TERM_I0750);
		if (!failure)
			failure = pmu_set_term_current(RANGE_T40, TERM_I0750);
	}

	return failure ? EC_ERROR_UNKNOWN : EC_SUCCESS;
}