125 lines
4 KiB
C
125 lines
4 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: power-nano2g.c 28190 2010-10-01 18:09:10Z Buschel $
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*
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* Copyright © 2009 Bertrik Sikken
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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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#include <stdbool.h>
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#include "config.h"
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#include "inttypes.h"
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#include "s5l8702.h"
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#include "power.h"
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#include "panic.h"
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#include "pmu-target.h"
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#include "usb_core.h" /* for usb_charging_maxcurrent_change */
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static int idepowered;
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void power_off(void)
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{
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pmu_set_wake_condition(0x42); /* USB inserted or EXTON1 */
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pmu_enter_standby();
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while(1);
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}
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void power_init(void)
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{
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idepowered = false;
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/* DOWN1CTL: CPU DVM step time = 30us (default: no DVM) */
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pmu_write(0x20, 2);
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/* USB power configuration:
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*
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* GPIO C0 is probably related to the LTC4066's CLPROG
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* pin (see datasheet). Setting it high allows to double
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* the maximum current selected by HPWR:
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*
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* GPIO B6 GPIO C0 USB current
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* HPWR CLPROG ??? limit (mA)
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* ------- ---------- -----------
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* 0 0 100
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* 1 0 500
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* 0 1 200
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* 1 1 1000 ??? (max.seen ~750mA)
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*
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* USB current limit includes battery charge and device
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* consumption. Battery charge has it's own limit at
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* 330~340 mA (configured using RPROG).
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*
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* Setting either of GPIO C1 or GPIO C2 disables battery
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* charge, power needed for device consumptiom is drained
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* from USB or AC adaptor when present. If external power
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* is not present or it is insufficient or limited,
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* additional required power is drained from battery.
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*/
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PCONB = (PCONB & 0x000000ff)
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| (0xe << 8) /* route D+ to ADC2: off */
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| (0xe << 12) /* route D- to ADC2: off */
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| (0x0 << 16) /* USB related input, POL pin ??? */
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| (0x0 << 20) /* USB related input, !CHRG pin ??? */
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| (0xf << 24) /* HPWR: 500mA */
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| (0xe << 28); /* USB suspend: off */
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PCONC = (PCONC & 0xffff0000)
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| (0xe << 0) /* double HPWR limit: off */
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| (0xe << 4) /* disable battery charge: off */
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| (0xe << 8) /* disable battery charge: off */
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| (0x0 << 12); /* USB inserted/not inserted */
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}
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void ide_power_enable(bool on)
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{
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idepowered = on;
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pmu_hdd_power(on);
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}
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bool ide_powered()
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{
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return idepowered;
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}
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#if CONFIG_CHARGING
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#ifdef HAVE_USB_CHARGING_ENABLE
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void usb_charging_maxcurrent_change(int maxcurrent)
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{
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bool suspend_charging = (maxcurrent < 100);
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bool fast_charging = (maxcurrent >= 500);
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/* This GPIO is connected to the LTC4066's SUSP pin */
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/* Setting it high prevents any power being drawn over USB */
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/* which supports USB suspend */
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GPIOCMD = 0xb070e | (suspend_charging ? 1 : 0);
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/* This GPIO is connected to the LTC4066's HPWR pin */
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/* Setting it low limits current to 100mA, setting it high allows 500mA */
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GPIOCMD = 0xb060e | (fast_charging ? 1 : 0);
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}
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#endif
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unsigned int power_input_status(void)
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{
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return (PDAT(12) & 8) ? POWER_INPUT_NONE : POWER_INPUT_MAIN_CHARGER;
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}
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bool charging_state(void)
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{
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return false; //TODO: Figure out
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}
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#endif /* CONFIG_CHARGING */
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