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https://github.com/Telecominfraproject/OpenCellular.git
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e5c6f97d1a
First version of the algorithm, some TODOs are left in the code
but this, generally, works reasonably well.
When charging, we allocate input current in this general order:
- Base system (fixed, low, number)
- Lid system (based on PSYS)
- Lid battery (estimating how much current the battery actually
requires)
- Base battery (similar estimation)
- Provide everything else to lid
When discharging, we generally:
- First discharge the base battery
- Then discharge the lid battery
BRANCH=none
BUG=b:71881017
TEST=Flash lux and wand, EC-EC communication works, adapter power
is split in a sensible way, and discharging works fine.
Change-Id: I8a4f87963962fc5466b2fedf1347eb4dadd35740
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/659460
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
94 lines
2.3 KiB
C
94 lines
2.3 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 "ec_ec_comm_master.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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#ifdef CONFIG_EC_EC_COMM_BATTERY_MASTER
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int input_voltage;
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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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/**
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* Board-specific routine to indicate if the base is connected.
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*/
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int board_is_base_connected(void);
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/**
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* Board-specific routine to enable power distribution between lid and base
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* (current can flow both ways).
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*/
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void board_enable_base_power(int enable);
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#endif /* __CROS_EC_CHARGE_STATE_V2_H */
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