82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
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/* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Battery pack vendor provided charging profile
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*/
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#include "battery.h"
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#include "battery_smart.h"
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#include "charge_state.h"
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#include "console.h"
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#include "ec_commands.h"
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#include "util.h"
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/* Shutdown mode parameter to write to manufacturer access register */
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#define SB_SHUTDOWN_DATA 0x0010
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/* Battery info for proto */
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static const struct battery_info info = {
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.voltage_max = 13050, /* mV */
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.voltage_normal = 11400,
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.voltage_min = 9000,
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.precharge_current = 392, /* mA */
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.start_charging_min_c = 0,
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.start_charging_max_c = 60,
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.charging_min_c = 0,
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.charging_max_c = 60,
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.discharging_min_c = 0,
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.discharging_max_c = 60,
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};
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const struct battery_info *battery_get_info(void)
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{
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return &info;
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}
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int board_cut_off_battery(void)
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{
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int rv;
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/* Ship mode command must be sent twice to take effect */
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rv = sb_write(SB_MANUFACTURER_ACCESS, SB_SHUTDOWN_DATA);
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if (rv != EC_SUCCESS)
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return EC_RES_ERROR;
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rv = sb_write(SB_MANUFACTURER_ACCESS, SB_SHUTDOWN_DATA);
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return rv ? EC_RES_ERROR : EC_RES_SUCCESS;
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}
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int charger_profile_override(struct charge_state_data *curr)
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{
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const struct battery_info *batt_info;
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/* battery temp in 0.1 deg C */
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int bat_temp_c = curr->batt.temperature - 2731;
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batt_info = battery_get_info();
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/* Don't charge if outside of allowable temperature range */
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if (bat_temp_c >= batt_info->charging_max_c * 10 ||
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bat_temp_c < batt_info->charging_min_c * 10) {
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curr->requested_current = 0;
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curr->requested_voltage = 0;
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curr->batt.flags &= ~BATT_FLAG_WANT_CHARGE;
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curr->state = ST_IDLE;
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}
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return 0;
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}
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/* Customs options controllable by host command. */
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#define PARAM_FASTCHARGE (CS_PARAM_CUSTOM_PROFILE_MIN + 0)
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enum ec_status charger_profile_override_get_param(uint32_t param,
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uint32_t *value)
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{
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return EC_RES_INVALID_PARAM;
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}
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enum ec_status charger_profile_override_set_param(uint32_t param,
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uint32_t value)
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{
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return EC_RES_INVALID_PARAM;
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}
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