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6bbb5adab1
This function sets up and enables "OTG" mode on the charger chip
(i.e. use the charger to provide power from the battery).
It also records the output current in curr.output_current, to
make sure that the charger loop is aware that current is provided
externally.
We also add a CONFIG_CHARGER_OTG to remove these functions on
boards that do not require it.
BRANCH=none
BUG=b:65697962
TEST=On wand, when discharging, battery status is updated every
5 seconds (and not every 60 seconds).
Change-Id: Ibf93933436f3eb24552a8e1eb9d97522fca2ce79
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/842743
Reviewed-by: Randall Spangler <rspangler@chromium.org>
79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/* Copyright (c) 2014 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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#include "battery.h"
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#include "battery_smart.h"
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#include "charger.h"
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#include "timer.h"
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#ifndef __CROS_EC_CHARGE_STATE_V2_H
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#define __CROS_EC_CHARGE_STATE_V2_H
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#if defined(CONFIG_I2C_VIRTUAL_BATTERY) && defined(CONFIG_BATTERY_SMART)
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#define VIRTUAL_BATTERY_ADDR BATTERY_ADDR
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#endif
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/*
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* The values exported by charge_get_state() and charge_get_flags() are used
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* only to control the LEDs (with one not-quite-correct exception). For V2
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* we use a different set of states internally.
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*/
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enum charge_state_v2 {
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ST_IDLE = 0,
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ST_DISCHARGE,
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ST_CHARGE,
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ST_PRECHARGE,
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NUM_STATES_V2
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};
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struct charge_state_data {
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timestamp_t ts;
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int ac;
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int batt_is_charging;
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struct charger_params chg;
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struct batt_params batt;
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enum charge_state_v2 state;
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int requested_voltage;
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int requested_current;
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int desired_input_current;
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#ifdef CONFIG_CHARGER_OTG
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int output_current;
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#endif
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};
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/**
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* Set the output current limit and voltage. This is used to provide power from
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* the charger chip ("OTG" mode).
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*
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* @param ma Maximum current to provide in mA (0 to disable output).
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* @param mv Voltage in mV (ignored if ma == 0).
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* @return EC_SUCCESS or error
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*/
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int charge_set_output_current_limit(int ma, int mv);
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/**
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* Set the charge input current limit. This value is stored and sent every
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* time AC is applied.
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*
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* @param ma New input current limit in mA
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* @param mv Negotiated charge voltage in mV.
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* @return EC_SUCCESS or error
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*/
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int charge_set_input_current_limit(int ma, int mv);
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/*
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* Expose charge/battery related state
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*
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* @param param command to get corresponding data
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* @param value the corresponding data
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* @return EC_SUCCESS or error
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*/
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#ifdef CONFIG_CHARGE_STATE_DEBUG
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int charge_get_charge_state_debug(int param, uint32_t *value);
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#endif /* CONFIG_CHARGE_STATE_DEBUG */
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#endif /* __CROS_EC_CHARGE_STATE_V2_H */
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