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Fills in the stubs the Nano 3G port was left with, taking each from how the original firmware drives the same hardware. Testing evidence: firmware/target/arm/s5l8702/ipodnano3g/TESTING.md. Co-authored-by: Claude Opus 5 <noreply@anthropic.com> Change-Id: Iea5314769502f5941a176600869591756c5e3233
76 lines
2.4 KiB
C
76 lines
2.4 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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*
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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 "s5l87xx.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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void power_init(void)
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{
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pmu_init();
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pmu_set_usblimit(false); /* limit to 100mA */
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}
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void power_off(void)
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{
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pmu_enter_standby();
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while(1);
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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 fast_charge = (maxcurrent >= 500);
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pmu_set_usblimit(fast_charge);
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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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unsigned int status = POWER_INPUT_NONE;
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if (usb_detect() == USB_INSERTED)
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status |= POWER_INPUT_USB_CHARGER;
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if (pmu_firewire_present())
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status |= POWER_INPUT_MAIN_CHARGER;
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return status;
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}
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/* As the original firmware decides it: the charger is
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* enabled (CHCTL bits 1..6), not suspended (SYSCTRLA bit 2), and not done:
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* STATUSB bits 1..2 clear. Measured: they read 0 while a 4.1 V cell
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* charges from USB, so they are taken as the charge-complete indication;
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* they have not been seen set. */
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bool charging_state(void)
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{
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if (!(power_input_status() & POWER_INPUT_CHARGER))
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return false;
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if (!(pmu_read(D1671_REG_CHCTL) & 0x7e))
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return false;
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if (pmu_read(D1671_REG_SYSCTRLA) & 0x04)
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return false;
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return !(pmu_read(D1671_REG_STATUSB) & 0x06);
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}
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#endif /* CONFIG_CHARGING */
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