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/* Copyright 2015 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.
*
* Battery pack vendor provided charging profile
*/
#include "battery.h"
#include "battery_smart.h"
#include "i2c.h"
#include "util.h"
/* Shutdown mode parameter to write to manufacturer access register */
#define PARAM_CUT_OFF_LOW 0x10
#define PARAM_CUT_OFF_HIGH 0x00
static const struct battery_info info = {
.voltage_max = 8700,
.voltage_normal = 7600,
.voltage_min = 6000,
/* Pre-charge values. */
.precharge_current = 256, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 45,
.charging_min_c = 0,
.charging_max_c = 45,
.discharging_min_c = -10,
.discharging_max_c = 60,
};
const struct battery_info *battery_get_info(void)
{
return &info;
}
static int cutoff(void)
{
int rv;
uint8_t buf[3];
/* Ship mode command must be sent twice to take effect */
buf[0] = SB_MANUFACTURER_ACCESS & 0xff;
buf[1] = PARAM_CUT_OFF_LOW;
buf[2] = PARAM_CUT_OFF_HIGH;
i2c_lock(I2C_PORT_BATTERY, 1);
rv = i2c_xfer(I2C_PORT_BATTERY, BATTERY_ADDR, buf, 3, NULL, 0,
I2C_XFER_SINGLE);
rv |= i2c_xfer(I2C_PORT_BATTERY, BATTERY_ADDR, buf, 3, NULL, 0,
I2C_XFER_SINGLE);
i2c_lock(I2C_PORT_BATTERY, 0);
return rv;
}
int board_cut_off_battery(void)
{
return cutoff();
}
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