96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
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/***************************************************************************
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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 © 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 "s5l8700.h"
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#include "power.h"
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/* Power handling for the S5L8700 based Samsung YP-S3
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Pins involved in with power management:
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* P1.1: USB power detect
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* P4.7: tuner power/enable
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* P5.2: unknown output
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* P5.3: unknown output, related to charging (perhaps charge current?)
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* P5.4: charge status input (only valid if charger enabled)
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* P5.6: charger enable
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*/
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void power_off(void)
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{
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/* don't know how to do this yet */
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}
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void power_init(void)
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{
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/* configure pin P1.1 as input for USB power detect */
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PCON1 = (PCON1 & ~0x000000F0) | 0x00000000;
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/* enable tuner power pin on P4.7 and turn power off */
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PCON4 = (PCON4 & ~0xF0000000) | 0x10000000;
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PDAT4 &= ~(1 << 7);
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/* configure pins P5.2 / P5.3 / P5.6 as output, P5.4 as input */
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PCON5 = (PCON5 & ~0x0F0FFF00) | 0x01001100;
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PDAT5 &= ~((1 << 2) | (1 << 3) | (1 << 6));
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}
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#if CONFIG_CHARGING
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unsigned int power_input_status(void)
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{
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/* check USB power on P1.1 */
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if (PDAT1 & (1 << 1)) {
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return POWER_INPUT_USB;
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}
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return POWER_INPUT_NONE;
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}
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bool charging_state(void)
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{
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if (PDAT5 & (1 << 6)) {
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/* charger is enabled, check if charging is busy */
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return (PDAT5 & (1 << 4));
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}
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return false;
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}
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#endif /* CONFIG_CHARGING */
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#if CONFIG_TUNER
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bool tuner_power(bool status)
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{
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if (status) {
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PDAT4 |= (1 << 7);
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}
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else {
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PDAT4 &= ~(1 << 7);
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}
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/* TODO what should we return here? */
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return status;
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}
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bool tuner_powered(void)
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{
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return (PDAT4 & (1 << 7));
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}
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#endif /* CONFIG_TUNER */
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