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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Linus Nielsen Feltzing
*
* 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.
*
****************************************************************************/
#include "config.h"
#include "cpu.h"
#include <stdbool.h>
#include "kernel.h"
#include "system.h"
#include "power.h"
#include "logf.h"
#include "pcf50605.h"
#include "usb.h"
#include "lcd.h"
#include "string.h"
#ifdef HAVE_USB_CHARGING_ENABLE
#include "usb_core.h" /* for usb_charging_maxcurrent_change */
#endif
void power_init(void)
{
#if defined(IPOD_1G2G) || defined(IPOD_3G)
GPIOC_ENABLE |= 0x40; /* GPIO C6 is HDD power (low active) */
GPIOC_OUTPUT_VAL &= ~0x40; /* on by default */
GPIOC_OUTPUT_EN |= 0x40; /* enable output */
#endif
#ifndef IPOD_1G2G
pcf50605_init();
#endif
}
#if CONFIG_CHARGING
unsigned int power_input_status(void)
{
unsigned int status = POWER_INPUT_NONE;
#if defined(IPOD_NANO) || defined(IPOD_VIDEO)
if ((GPIOL_INPUT_VAL & 0x08) == 0)
status = POWER_INPUT_MAIN_CHARGER;
if ((GPIOL_INPUT_VAL & 0x10) != 0)
status |= POWER_INPUT_USB_CHARGER;
/* */
#elif defined(IPOD_4G) || defined(IPOD_COLOR) \
|| defined(IPOD_MINI) || defined(IPOD_MINI2G)
/* C2 is firewire power */
if ((GPIOC_INPUT_VAL & 0x04) == 0)
status = POWER_INPUT_MAIN_CHARGER;
if ((GPIOD_INPUT_VAL & 0x08) != 0)
status |= POWER_INPUT_USB_CHARGER;
/* */
#elif defined(IPOD_3G)
/* firewire power */
if ((GPIOC_INPUT_VAL & 0x10) == 0)
status = POWER_INPUT_MAIN_CHARGER;
/* */
#else
/* This needs filling in for other ipods. */
#endif
return status;
}
/* Returns true if the unit is charging the batteries. */
bool charging_state(void) {
#if defined(IPOD_COLOR)
/* 0x70000088 appears to be the input value for GPO32 bits.
Write a zero to 0x70000088 before reading.
To enable input set the corresponding 0x7000008C bit,
and clear the corresponding GPO32_ENABLE bit. */
outl(0, 0x70000088);
return (inl(0x70000088) & 1)?false:true;
#else
return (GPIOB_INPUT_VAL & 0x01)?false:true;
#endif
}
#endif /* CONFIG_CHARGING */
void ide_power_enable(bool on)
{
#if defined(IPOD_1G2G) || defined(IPOD_3G)
if (on)
GPIOC_OUTPUT_VAL &= ~0x40;
else
GPIOC_OUTPUT_VAL |= 0x40;
#elif defined(IPOD_4G) || defined(IPOD_COLOR) \
|| defined(IPOD_MINI) || defined(IPOD_MINI2G)
if (on)
{
GPIO_CLEAR_BITWISE(GPIOJ_OUTPUT_VAL, 0x04);
DEV_EN |= DEV_IDE0;
}
else
{
DEV_EN &= ~DEV_IDE0;
GPIO_SET_BITWISE(GPIOJ_OUTPUT_VAL, 0x04);
}
#elif defined(IPOD_VIDEO)
if (on)
{
GPO32_VAL &= ~0x40000000;
sleep(1); /* only need 4 ms */
DEV_EN |= DEV_IDE0;
GPIOG_ENABLE = 0;
GPIOH_ENABLE = 0;
GPIO_CLEAR_BITWISE(GPIOI_ENABLE, 0xBF);
GPIO_CLEAR_BITWISE(GPIOK_ENABLE, 0x1F);
udelay(10);
}
else
{
DEV_EN &= ~DEV_IDE0;
udelay(10);
GPIOG_ENABLE = 0xFF;
GPIOH_ENABLE = 0xFF;
GPIO_SET_BITWISE(GPIOI_ENABLE, 0xBF);
GPIO_SET_BITWISE(GPIOK_ENABLE, 0x1F);
GPO32_VAL |= 0x40000000;
}
#else /* Nano */
(void)on; /* Do nothing. */
#endif
}
bool ide_powered(void)
{
#if defined(IPOD_1G2G) || defined(IPOD_3G)
return !(GPIOC_OUTPUT_VAL & 0x40);
#elif defined(IPOD_4G) || defined(IPOD_COLOR) \
|| defined(IPOD_MINI) || defined(IPOD_MINI2G)
return !(GPIOJ_OUTPUT_VAL & 0x04);
#elif defined(IPOD_VIDEO)
return !(GPO32_VAL & 0x40000000);
#else /* Nano */
return true; /* Pretend we are always powered */
#endif
}
void power_off(void)
{
#if defined(HAVE_LCD_COLOR) && !defined(HAVE_LCD_SHUTDOWN)
/* Clear the screen and backdrop to
remove ghosting effect on shutdown */
lcd_set_backdrop(NULL);
lcd_set_background(LCD_WHITE);
lcd_clear_display();
lcd_update();
sleep(HZ/16);
#endif
#ifndef BOOTLOADER
#ifdef IPOD_1G2G
/* we cannot turn off the 1st gen/ 2nd gen yet. Need to figure out sleep mode. */
system_reboot();
#else
/* We don't turn off the ipod, we put it in a deep sleep */
/* Clear latter part of iram (the part used by plugins/codecs) to ensure
* that the OF behaves properly on boot. There is some kind of boot
* failure flag there which otherwise may not be cleared.
*/
#if CONFIG_CPU == PP5022
memset((void*)0x4000c000, 0, 0x14000);
#elif CONFIG_CPU == PP5020
memset((void*)0x4000c000, 0, 0xc000);
#endif
pcf50605_standby_mode();
#endif
#endif
}
#ifdef HAVE_USB_CHARGING_ENABLE
void usb_charging_maxcurrent_change(int maxcurrent)
{
bool suspend_charging = (maxcurrent < 100);
bool fast_charging = (maxcurrent >= 500);
/* This GPIO is connected to the LTC4066's SUSP pin */
/* Setting it high prevents any power being drawn over USB */
/* which supports USB suspend */
#if defined(IPOD_VIDEO) || defined(IPOD_NANO)
if (suspend_charging)
GPIO_SET_BITWISE(GPIOL_OUTPUT_VAL, 4);
else
GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_VAL, 4);
#elif defined(IPOD_MINI2G)
if (suspend_charging)
GPIO_SET_BITWISE(GPIOJ_OUTPUT_VAL, 2);
else
GPIO_CLEAR_BITWISE(GPIOJ_OUTPUT_VAL, 2);
#else /* Color, 4G, Mini G1 */
if (suspend_charging)
GPO32_VAL |= 0x8000000;
else
GPO32_VAL &= ~0x8000000;
#endif
/* This GPIO is connected to the LTC4066's HPWR pin */
/* Setting it low limits current to 100mA, setting it high allows 500mA */
#if defined(IPOD_VIDEO) || defined(IPOD_NANO)
if (fast_charging)
GPIO_SET_BITWISE(GPIOA_OUTPUT_VAL, 4);
else
GPIO_CLEAR_BITWISE(GPIOA_OUTPUT_VAL, 4);
#else
if (fast_charging)
GPO32_VAL |= 0x40;
else
GPO32_VAL &= ~0x40;
#endif
/* This GPIO is connected to the LTC4066's CLDIS pin */
/* Setting it high allows up to 1.5A of current to be drawn */
/* This doesn't appear to actually be safe even with an AC charger */
/* so for now it is disabled. It's not known (or maybe doesn't exist) */
/* on all models. */
#if 0
#if defined(IPOD_VIDEO)
if (unlimited_charging)
GPO32_VAL |= 0x10000000;
else
GPO32_VAL &= ~0x10000000;
#elif defined(IPOD_4G) || defined(IPOD_COLOR)
if (unlimited_charging)
GPO32_VAL |= 0x200;
else
GPO32_VAL &= ~0x200;
#endif
/* This might be GPIOD & 40 on 2G */
#endif
}
#endif /* HAVE_USB_CHARGING_ENABLE */
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