blob: c157dc2fbf20f6c4c787e5b52a2827ffe647d73f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Michael Sevakis
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef POWERMGMT_TARGET_H
#define POWERMGMT_TARGET_H
/* Can't just run this code willy-nilly. Do not allow charger engagement
* without carefully verifying compatibility.
*
* Things to check:
* 1) Charge path configuration for the PMIC.
* 2) Correct thermistor reading
* 3) Accurate voltage readings
* 4) Accurate current sense for the charge path as the sense resistor may
* deviate from the 0.1 ohms assumed by the charge path regulator.
*/
#ifdef TOSHIBA_GIGABEAT_S
/*
* Gigabeat S qualifications:
* 1) Setup for dual-supply mode with separate inputs and providing USB
* charging capability through external components.
* 2) Curve obtained experimentally - extreme deviation from "optimized"
* characteristics.
* 3) Verified at battery terminals - no deviation from datasheet formula.
* 4) 0.316 ohms <=?? - verified by comparitive current readings on device
* with ammeter readings and measurement of on-board components.
*/
#ifndef BOOTLOADER
#define IMX31_ALLOW_CHARGING
#endif
#else
#warning This iMX31 target requires validation of charging algorithm - charging disabled
#endif
#define BATT_VTRICKLE_CHARGE 2900 /* Must charge slowly */
#define BATT_VSLOW_CHARGE 3500 /* Lower-current charge mode below
* this level */
#define BATT_FULL_VOLTAGE 4161 /* Battery already topped */
#define BATT_VAUTO_RECHARGE 4100 /* When to begin another cycle */
#define BATT_USB_VAUTO_RECHARGE 4000 /* When to cycle with USB only */
#define BATT_USB_VSTOP 4140 /* When to "stop" when USB only */
#define BATT_TOO_LOW 2400 /* No battery? Short? Can't
read below 2400mV. */
#define CHARGER_TOTAL_TIMER 300 /* minutes */
/* .316 ohms is closest standard value as measured in 1% tolerance - adjust
* relative to .100 ohm which is what the PMIC is "tuned" for. */
#define ILEVEL_ADJUST_IN(I) (100*(I) / 316)
#define ILEVEL_ADJUST_OUT(I) (316*(I) / 100)
/* Relative draw to battery capacity - adjusted for sense resistor */
#define BATTERY_ICHARGE_COMPLETE (505*9/100) /* 9% of nominal max output */
/* All charging modes use 4.200V for regulator */
#define BATTERY_VCHARGING MC13783_VCHRG_4_200V
/* Slow charging - MAIN - Still below 3.5V (avoid excessive reg. dissipation) */
/* #define BATTERY_ISLOW */
/* Fast charging - MAIN */
#define BATTERY_IFAST MC13783_ICHRG_1596MA /* 505mA */
/* Trickle charging low battery - MAIN (~10% Imax) */
#define BATTERY_ITRICKLE MC13783_ICHRG_177MA /* 56mA */
/* Slow charging - USB - Still below 3.5V (avoid excessive reg. dissipation) */
/* #define BATTERY_ISLOW_USB */
/* Fast charging - USB */
#define BATTERY_IFAST_USB MC13783_ICHRG_1152MA /* 365mA */
/* Trickle charging low battery - USB (Ibat = Icccv - Idevice) */
#define BATTERY_ITRICKLE_USB MC13783_ICHRG_532MA /* 168mA */
/* Maintain charge - USB 500mA */
#define BATTERY_IFLOAT_USB MC13783_ICHRG_1152MA /* 365mA */
#define BATTERY_VFLOAT_USB MC13783_VCHRG_4_150V
/* Maintain charge - USB 100mA */
#define BATTERY_IMAINTAIN_USB MC13783_ICHRG_266MA /* 84mA */
#define BATTERY_VMAINTAIN_USB MC13783_VCHRG_4_150V
/* Battery filter lengths in samples */
#define BATT_AVE_SAMPLES 32
#define ICHARGER_AVE_SAMPLES 32
void powermgmt_init_target(void);
void charging_algorithm_step(void);
void charging_algorithm_close(void);
/* Provide filtered charge current */
int battery_charge_current(void);
#if 0
#define CURRENT_MAX_CHG battery_charge_current()
#endif
#endif /* POWERMGMT_TARGET_H */
|
