9594f86c1a
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26180 a1c6a512-1295-4272-9138-f99709370657
121 lines
5.2 KiB
C
121 lines
5.2 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2008 by Michael Sevakis
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef POWERMGMT_TARGET_H
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#define POWERMGMT_TARGET_H
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/* Can't just run this code willy-nilly. Do not allow charger engagement
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* without carefully verifying compatibility.
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*
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* Things to check:
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* 1) Charge path configuration for the PMIC.
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* 2) Correct thermistor reading
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* 3) Accurate voltage readings
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* 4) Accurate current sense for the charge path as the sense resistor may
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* deviate from the 0.1 ohms assumed by the charge path regulator.
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*/
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#ifdef TOSHIBA_GIGABEAT_S
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/*
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* Gigabeat S qualifications:
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* 1) Setup for dual-supply mode with separate inputs and providing USB
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* charging capability through external components.
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* 2) Curve obtained experimentally - extreme deviation from "optimized"
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* characteristics.
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* 3) Verified at battery terminals - no deviation from datasheet formula.
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* 4) 0.316 ohms <=?? - verified by comparitive current readings on device
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* with ammeter readings and measurement of on-board components.
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*/
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#ifndef BOOTLOADER
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#define IMX31_ALLOW_CHARGING
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#endif
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#else
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#warning This iMX31 target requires validation of charging algorithm - charging disabled
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#endif
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#define BATT_VTRICKLE_CHARGE 2900 /* Must charge slowly */
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#define BATT_VSLOW_CHARGE 3500 /* Lower-current charge mode below
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* this level */
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#define BATT_FULL_VOLTAGE 4161 /* Battery already topped */
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#define BATT_VAUTO_RECHARGE 4100 /* When to begin another cycle */
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#define BATT_USB_VAUTO_RECHARGE 4000 /* When to cycle with USB only */
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#define BATT_USB_VSTOP 4140 /* When to "stop" when USB only */
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#define BATT_TOO_LOW 2400 /* No battery? Short? Can't
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read below 2400mV. */
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#define BATT_TOO_HIGH 4220 /* Extra care. Don't totally
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rely upon battery protection
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circutry. Stop it early if too
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high. */
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#define CHARGER_TOTAL_TIMER 300 /* minutes */
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/* Temperature readings - w/hysteresis */
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/* Temperature range before beginning charging */
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#define BATTERY_CHARGE_MIN 0
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#define BATTERY_CHARGE_MAX 50
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/* Temperature range after out-of-range detected - charging will
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* self-resume */
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#define BATTERY_CHARGE_RESTART_MIN 5
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#define BATTERY_CHARGE_RESTART_MAX 45
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/* .316 ohms is closest standard value as measured in 1% tolerance - adjust
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* relative to .100 ohm which is what the PMIC is "tuned" for. */
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#define ILEVEL_ADJUST_IN(I) (100*(I) / 316)
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#define ILEVEL_ADJUST_OUT(I) (316*(I) / 100)
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/* Relative draw to battery capacity - adjusted for sense resistor */
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#define BATTERY_ICHARGE_COMPLETE (505*9/100) /* 9% of nominal max output */
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/* All charging modes use 4.200V for regulator */
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#define BATTERY_VCHARGING MC13783_VCHRG_4_200V
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/* Slow charging - MAIN - Still below 3.5V (avoid excessive reg. dissipation) */
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/* #define BATTERY_ISLOW */
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/* Fast charging - MAIN */
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#define BATTERY_IFAST MC13783_ICHRG_1596MA /* 505mA */
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/* Trickle charging low battery - MAIN (~10% Imax) */
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#define BATTERY_ITRICKLE MC13783_ICHRG_177MA /* 56mA */
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/* Slow charging - USB - Still below 3.5V (avoid excessive reg. dissipation) */
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/* #define BATTERY_ISLOW_USB */
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/* Fast charging - USB */
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#define BATTERY_IFAST_USB MC13783_ICHRG_1152MA /* 365mA */
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/* Trickle charging low battery - USB (Ibat = Icccv - Idevice) */
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#define BATTERY_ITRICKLE_USB MC13783_ICHRG_532MA /* 168mA */
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/* Maintain charge - USB 500mA */
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#define BATTERY_IFLOAT_USB MC13783_ICHRG_1152MA /* 365mA */
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#define BATTERY_VFLOAT_USB MC13783_VCHRG_4_150V
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/* Maintain charge - USB 100mA */
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#define BATTERY_IMAINTAIN_USB MC13783_ICHRG_266MA /* 84mA */
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#define BATTERY_VMAINTAIN_USB MC13783_VCHRG_4_150V
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/* Battery filter lengths in samples */
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#define BATT_AVE_SAMPLES 128
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#define ICHARGER_AVE_SAMPLES 32
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void powermgmt_init_target(void);
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void charging_algorithm_step(void);
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void charging_algorithm_close(void);
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/* Provide filtered charge current */
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int battery_charge_current(void);
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#if 0
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#define CURRENT_MAX_CHG battery_charge_current()
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#endif
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#endif /* POWERMGMT_TARGET_H */
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