5b4a84a4ce
Instead of using the OF's low-battery handler to force a shutdown which appears to have numerous unwanted side effects, just clear the end of IRAM before shutting down which appears to solve the original "ipod sometimes needs hard reset to turn on" issue. If you experience the "need hard reset" issue after this commit, please let us know. It has been tested on several models but we still don't know for sure what the original problem was. ;) git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25772 a1c6a512-1295-4272-9138-f99709370657
184 lines
5.1 KiB
C
184 lines
5.1 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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* $Id$
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*
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* Copyright (C) 2002 by Linus Nielsen Feltzing
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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 "config.h"
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#include "cpu.h"
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#include <stdbool.h>
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#include "kernel.h"
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#include "system.h"
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#include "power.h"
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#include "logf.h"
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#include "pcf50605.h"
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#include "usb.h"
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#include "lcd.h"
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#include "string.h"
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void power_init(void)
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{
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#if defined(IPOD_1G2G) || defined(IPOD_3G)
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GPIOC_ENABLE |= 0x40; /* GPIO C6 is HDD power (low active) */
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GPIOC_OUTPUT_VAL &= ~0x40; /* on by default */
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GPIOC_OUTPUT_EN |= 0x40; /* enable output */
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#endif
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#ifndef IPOD_1G2G
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pcf50605_init();
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#endif
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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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unsigned int status = POWER_INPUT_NONE;
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#if defined(IPOD_NANO) || defined(IPOD_VIDEO)
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if ((GPIOL_INPUT_VAL & 0x08) == 0)
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status = POWER_INPUT_MAIN_CHARGER;
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if ((GPIOL_INPUT_VAL & 0x10) != 0)
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status |= POWER_INPUT_USB_CHARGER;
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/* */
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#elif defined(IPOD_4G) || defined(IPOD_COLOR) \
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|| defined(IPOD_MINI) || defined(IPOD_MINI2G)
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/* C2 is firewire power */
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if ((GPIOC_INPUT_VAL & 0x04) == 0)
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status = POWER_INPUT_MAIN_CHARGER;
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if ((GPIOD_INPUT_VAL & 0x08) != 0)
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status |= POWER_INPUT_USB_CHARGER;
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/* */
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#elif defined(IPOD_3G)
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/* firewire power */
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if ((GPIOC_INPUT_VAL & 0x10) == 0)
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status = POWER_INPUT_MAIN_CHARGER;
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/* */
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#else
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/* This needs filling in for other ipods. */
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#endif
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return status;
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}
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/* Returns true if the unit is charging the batteries. */
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bool charging_state(void) {
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#if defined(IPOD_COLOR)
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/* 0x70000088 appears to be the input value for GPO32 bits.
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Write a zero to 0x70000088 before reading.
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To enable input set the corresponding 0x7000008C bit,
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and clear the corresponding GPO32_ENABLE bit. */
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outl(0, 0x70000088);
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return (inl(0x70000088) & 1)?false:true;
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#else
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return (GPIOB_INPUT_VAL & 0x01)?false:true;
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#endif
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}
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#endif /* CONFIG_CHARGING */
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void ide_power_enable(bool on)
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{
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#if defined(IPOD_1G2G) || defined(IPOD_3G)
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if (on)
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GPIOC_OUTPUT_VAL &= ~0x40;
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else
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GPIOC_OUTPUT_VAL |= 0x40;
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#elif defined(IPOD_4G) || defined(IPOD_COLOR) \
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|| defined(IPOD_MINI) || defined(IPOD_MINI2G)
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if (on)
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{
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GPIO_CLEAR_BITWISE(GPIOJ_OUTPUT_VAL, 0x04);
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DEV_EN |= DEV_IDE0;
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}
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else
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{
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DEV_EN &= ~DEV_IDE0;
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GPIO_SET_BITWISE(GPIOJ_OUTPUT_VAL, 0x04);
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}
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#elif defined(IPOD_VIDEO)
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if (on)
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{
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GPO32_VAL &= ~0x40000000;
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sleep(1); /* only need 4 ms */
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DEV_EN |= DEV_IDE0;
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GPIOG_ENABLE = 0;
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GPIOH_ENABLE = 0;
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GPIO_CLEAR_BITWISE(GPIOI_ENABLE, 0xBF);
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GPIO_CLEAR_BITWISE(GPIOK_ENABLE, 0x1F);
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udelay(10);
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}
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else
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{
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DEV_EN &= ~DEV_IDE0;
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udelay(10);
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GPIOG_ENABLE = 0xFF;
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GPIOH_ENABLE = 0xFF;
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GPIO_SET_BITWISE(GPIOI_ENABLE, 0xBF);
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GPIO_SET_BITWISE(GPIOK_ENABLE, 0x1F);
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GPO32_VAL |= 0x40000000;
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}
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#else /* Nano */
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(void)on; /* Do nothing. */
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#endif
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}
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bool ide_powered(void)
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{
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#if defined(IPOD_1G2G) || defined(IPOD_3G)
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return !(GPIOC_OUTPUT_VAL & 0x40);
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#elif defined(IPOD_4G) || defined(IPOD_COLOR) \
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|| defined(IPOD_MINI) || defined(IPOD_MINI2G)
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return !(GPIOJ_OUTPUT_VAL & 0x04);
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#elif defined(IPOD_VIDEO)
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return !(GPO32_VAL & 0x40000000);
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#else /* Nano */
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return true; /* Pretend we are always powered */
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#endif
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}
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void power_off(void)
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{
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#if defined(HAVE_LCD_COLOR) && !defined(HAVE_LCD_SHUTDOWN)
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/* Clear the screen and backdrop to
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remove ghosting effect on shutdown */
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lcd_set_backdrop(NULL);
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lcd_set_background(LCD_WHITE);
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lcd_clear_display();
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lcd_update();
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sleep(HZ/16);
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#endif
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#ifndef BOOTLOADER
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#ifdef IPOD_1G2G
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/* we cannot turn off the 1st gen/ 2nd gen yet. Need to figure out sleep mode. */
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system_reboot();
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#else
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/* We don't turn off the ipod, we put it in a deep sleep */
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/* Clear latter part of iram (the part used by plugins/codecs) to ensure
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* that the OF behaves properly on boot. There is some kind of boot
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* failure flag there which otherwise may not be cleared.
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*/
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#if CONFIG_CPU == PP5022
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memset((void*)0x4000c000, 0, 0x14000);
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#elif CONFIG_CPU == PP5020
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memset((void*)0x4000c000, 0, 0xc000);
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#endif
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pcf50605_standby_mode();
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#endif
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#endif
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}
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