4a2cab6aa1
This adds proper full speed charging support for iPod 4G, Color, Mini 1G, Mini 2G, Nano 1G, and Video. Nano 2G already has support, so now all ipods charge (except 1G-3G whose hardware doesn't support USB charging). USB charging defaults to on, but will only charge at full speed from a USB host. To charge from an AC charger, you need to set the USB charging mode to "force". It may be possible to detect AC chargers in a future version, at least on some models. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26626 a1c6a512-1295-4272-9138-f99709370657
246 lines
6.9 KiB
C
246 lines
6.9 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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#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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GPIOL_OUTPUT_VAL |= 4;
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else
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GPIOL_OUTPUT_VAL &= ~4;
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#elif defined(IPOD_MINI2G)
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if (suspend_charging)
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GPIOJ_OUTPUT_VAL |= 2;
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else
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GPIOJ_OUTPUT_VAL &= ~2;
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#else
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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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GPIOA_OUTPUT_VAL |= 4;
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else
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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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