firmware/target/arm/ipod/power-ipod.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 by Linus Nielsen Feltzing
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "config.h"
  22 #include "cpu.h"
  23 #include <stdbool.h>
  24 #include "kernel.h"
  25 #include "system.h"
  26 #include "power.h"
  27 #include "logf.h"
  28 #include "pcf50605.h"
  29 #include "usb.h"
  30 #include "lcd.h"
  31 #include "string.h"
  32 #if CONFIG_CPU == PP5022 || CONFIG_CPU == PP5020
  33 #include "rtc.h"
  34 #endif
  35
  36 void power_init(void)
  37 {
  38 #if defined(IPOD_1G2G) || defined(IPOD_3G)
  39     GPIOC_ENABLE |= 0x40;      /* GPIO C6 is HDD power (low active) */
  40     GPIOC_OUTPUT_VAL &= ~0x40; /* on by default */
  41     GPIOC_OUTPUT_EN |= 0x40;   /* enable output */
  42 #endif
  43 #ifndef IPOD_1G2G
  44     pcf50605_init();
  45 #endif
  46 }
  47
  48 #if CONFIG_CHARGING
  49 unsigned int power_input_status(void)
  50 {
  51     unsigned int status = POWER_INPUT_NONE;
  52
  53 #if defined(IPOD_NANO) || defined(IPOD_VIDEO)
  54     if ((GPIOL_INPUT_VAL & 0x08) == 0)
  55         status = POWER_INPUT_MAIN_CHARGER;
  56
  57     if ((GPIOL_INPUT_VAL & 0x10) != 0)
  58         status |= POWER_INPUT_USB_CHARGER;
  59     /* */
  60 #elif defined(IPOD_4G) || defined(IPOD_COLOR) \
  61        || defined(IPOD_MINI) || defined(IPOD_MINI2G)
  62     /* C2 is firewire power */
  63     if ((GPIOC_INPUT_VAL & 0x04) == 0)
  64         status = POWER_INPUT_MAIN_CHARGER;
  65
  66     if ((GPIOD_INPUT_VAL & 0x08) != 0)
  67         status |= POWER_INPUT_USB_CHARGER;
  68     /* */
  69 #elif defined(IPOD_3G)
  70     /* firewire power */
  71     if ((GPIOC_INPUT_VAL & 0x10) == 0)
  72         status = POWER_INPUT_MAIN_CHARGER;
  73     /* */
  74 #else
  75     /* This needs filling in for other ipods. */
  76 #endif
  77
  78     return status;
  79 }
  80
  81 /* Returns true if the unit is charging the batteries. */
  82 bool charging_state(void) {
  83 #if defined(IPOD_COLOR)
  84     /* 0x70000088 appears to be the input value for GPO32 bits.
  85        Write a zero to 0x70000088 before reading.
  86        To enable input set the corresponding 0x7000008C bit,
  87        and clear the corresponding GPO32_ENABLE bit. */
  88     outl(0, 0x70000088);
  89     return (inl(0x70000088) & 1)?false:true;
  90 #else
  91     return (GPIOB_INPUT_VAL & 0x01)?false:true;
  92 #endif
  93 }
  94 #endif /* CONFIG_CHARGING */
  95
  96
  97 void ide_power_enable(bool on)
  98 {
  99 #if defined(IPOD_1G2G) || defined(IPOD_3G)
 100     if (on)
 101         GPIOC_OUTPUT_VAL &= ~0x40;
 102     else
 103         GPIOC_OUTPUT_VAL |= 0x40;
 104 #elif defined(IPOD_4G) || defined(IPOD_COLOR) \
 105    || defined(IPOD_MINI) || defined(IPOD_MINI2G)
 106     if (on)
 107     {
 108         GPIO_CLEAR_BITWISE(GPIOJ_OUTPUT_VAL, 0x04);
 109         DEV_EN |= DEV_IDE0;
 110     }
 111     else
 112     {
 113         DEV_EN &= ~DEV_IDE0;
 114         GPIO_SET_BITWISE(GPIOJ_OUTPUT_VAL, 0x04);
 115     }
 116 #elif defined(IPOD_VIDEO)
 117     if (on)
 118     {
 119         GPO32_VAL &= ~0x40000000;
 120         sleep(1);  /* only need 4 ms */
 121         DEV_EN |= DEV_IDE0;
 122         GPIOG_ENABLE = 0;
 123         GPIOH_ENABLE = 0;
 124         GPIO_CLEAR_BITWISE(GPIOI_ENABLE, 0xBF);
 125         GPIO_CLEAR_BITWISE(GPIOK_ENABLE, 0x1F);
 126         udelay(10);
 127     }
 128     else
 129     {
 130         DEV_EN &= ~DEV_IDE0;
 131         udelay(10);
 132         GPIOG_ENABLE = 0xFF;
 133         GPIOH_ENABLE = 0xFF;
 134         GPIO_SET_BITWISE(GPIOI_ENABLE, 0xBF);
 135         GPIO_SET_BITWISE(GPIOK_ENABLE, 0x1F);
 136         GPO32_VAL |= 0x40000000;
 137     }
 138 #else /* Nano */
 139     (void)on;  /* Do nothing. */
 140 #endif
 141 }
 142
 143 bool ide_powered(void)
 144 {
 145 #if defined(IPOD_1G2G) || defined(IPOD_3G)
 146     return !(GPIOC_OUTPUT_VAL & 0x40);
 147 #elif defined(IPOD_4G) || defined(IPOD_COLOR) \
 148    || defined(IPOD_MINI) || defined(IPOD_MINI2G)
 149     return !(GPIOJ_OUTPUT_VAL & 0x04);
 150 #elif defined(IPOD_VIDEO)
 151     return !(GPO32_VAL & 0x40000000);
 152 #else /* Nano */
 153     return true; /* Pretend we are always powered */
 154 #endif
 155 }
 156
 157 void power_off(void)
 158 {
 159 #if defined(HAVE_LCD_COLOR) && !defined(HAVE_LCD_SHUTDOWN)
 160     /* Clear the screen and backdrop to
 161     remove ghosting effect on shutdown */
 162     lcd_set_backdrop(NULL);
 163     lcd_set_background(LCD_WHITE);
 164     lcd_clear_display();
 165     lcd_update();
 166     sleep(HZ/16);
 167 #endif
 168
 169 #ifndef BOOTLOADER
 170 #if CONFIG_CPU == PP5022 || CONFIG_CPU == PP5020
 171     /* When shut down by OF, wakeup via alarm is enabled.  This resets the
 172        alarm time so an unintended wakeup does not occur. */
 173     if (!(pcf50605_wakeup_flags & 0x10))
 174         rtc_enable_alarm(false);
 175 #endif
 176 #if defined(IPOD_1G2G)
 177     /* we cannot turn off the 1st gen/ 2nd gen yet. Need to figure out sleep mode. */
 178     system_reboot();
 179 #elif CONFIG_CPU == PP5022
 180     /* The OF in flash assumes boot failed because the battery is low.
 181        If there is no charger connected, this leads to a shutdown.
 182      */
 183     memcpy((void *)(0x4001ff00+8), "booting!", 8);
 184     system_reboot();
 185 #elif CONFIG_CPU == PP5020
 186     memcpy((void *)(0x40017f00+8), "booting!", 8);
 187     system_reboot();
 188 #else
 189     /* We don't turn off the ipod, we put it in a deep sleep */
 190     pcf50605_standby_mode();
 191 #endif
 192 #endif
 193 }