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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 "charge_state.h"
#include "ec_commands.h"
#include "gpio.h"
#include "system.h"
/* Shutdown mode parameter to write to manufacturer access register */
#define SB_SHUTDOWN_DATA 0x0010
#define CHARGING_VOLTAGE_LIMIT 8500
#define CHARGING_CURRENT_LIMIT 1930
static const struct battery_info info = {
.voltage_max = 8700,/* mV */
.voltage_normal = 7600,
.voltage_min = 6000,
.precharge_current = 150,/* mA */
.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 = 60,
};
#ifdef CONFIG_BATTERY_PRESENT_CUSTOM
/**
* Custom physical check of battery presence.
*/
enum battery_present battery_is_present(void)
{
if (system_get_board_version() < 5)
return BP_YES;
else
return gpio_get_level(GPIO_BAT_PRESENT_L) ? BP_NO : BP_YES;
}
#endif
const struct battery_info *battery_get_info(void)
{
return &info;
}
int board_cut_off_battery(void)
{
int rv;
/* Ship mode command must be sent twice to take effect */
rv = sb_write(SB_MANUFACTURER_ACCESS, SB_SHUTDOWN_DATA);
if (rv != EC_SUCCESS)
return rv;
return sb_write(SB_MANUFACTURER_ACCESS, SB_SHUTDOWN_DATA);
}
int charger_profile_override(struct charge_state_data *curr)
{
if (curr->requested_voltage > CHARGING_VOLTAGE_LIMIT)
curr->requested_voltage = CHARGING_VOLTAGE_LIMIT;
if (curr->requested_current > CHARGING_CURRENT_LIMIT)
curr->requested_current = CHARGING_CURRENT_LIMIT;
return 0;
}
/* Customs options controllable by host command. */
#define PARAM_FASTCHARGE (CS_PARAM_CUSTOM_PROFILE_MIN + 0)
enum ec_status charger_profile_override_get_param(uint32_t param,
uint32_t *value)
{
return EC_RES_INVALID_PARAM;
}
enum ec_status charger_profile_override_set_param(uint32_t param,
uint32_t value)
{
return EC_RES_INVALID_PARAM;
}
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