249 lines
7.1 KiB
C
249 lines
7.1 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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#ifdef HAVE_USB_CHARGING_ENABLE
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#include "usb_core.h" /* for usb_charging_maxcurrent_change */
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#endif
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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) || defined(IPOD_1G2G)
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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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#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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#if defined(IPOD_VIDEO) || defined(IPOD_NANO)
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if (suspend_charging)
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GPIO_SET_BITWISE(GPIOL_OUTPUT_VAL, 4);
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else
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GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_VAL, 4);
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#elif defined(IPOD_MINI2G)
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if (suspend_charging)
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GPIO_SET_BITWISE(GPIOJ_OUTPUT_VAL, 2);
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else
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GPIO_CLEAR_BITWISE(GPIOJ_OUTPUT_VAL, 2);
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#else /* Color, 4G, Mini G1 */
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if (suspend_charging)
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GPO32_VAL |= 0x8000000;
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else
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GPO32_VAL &= ~0x8000000;
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#endif
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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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#if defined(IPOD_VIDEO) || defined(IPOD_NANO)
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if (fast_charging)
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GPIO_SET_BITWISE(GPIOA_OUTPUT_VAL, 4);
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else
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GPIO_CLEAR_BITWISE(GPIOA_OUTPUT_VAL, 4);
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#else
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if (fast_charging)
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GPO32_VAL |= 0x40;
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else
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GPO32_VAL &= ~0x40;
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#endif
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/* This GPIO is connected to the LTC4066's CLDIS pin */
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/* Setting it high allows up to 1.5A of current to be drawn */
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/* This doesn't appear to actually be safe even with an AC charger */
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/* so for now it is disabled. It's not known (or maybe doesn't exist) */
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/* on all models. */
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#if 0
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#if defined(IPOD_VIDEO)
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if (unlimited_charging)
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GPO32_VAL |= 0x10000000;
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else
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GPO32_VAL &= ~0x10000000;
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#elif defined(IPOD_4G) || defined(IPOD_COLOR)
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if (unlimited_charging)
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GPO32_VAL |= 0x200;
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else
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GPO32_VAL &= ~0x200;
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#endif
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/* This might be GPIOD & 40 on 2G */
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#endif
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}
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#endif /* HAVE_USB_CHARGING_ENABLE */
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