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
  32 void power_init(void)
  33 {
  34 #if defined(IPOD_1G2G) || defined(IPOD_3G)
  35     GPIOC_ENABLE |= 0x40;      /* GPIO C6 is HDD power (low active) */
  36     GPIOC_OUTPUT_VAL &= ~0x40; /* on by default */
  37     GPIOC_OUTPUT_EN |= 0x40;   /* enable output */
  38 #endif
  39 #ifndef IPOD_1G2G
  40     pcf50605_init();
  41 #endif
  42 }
  43
  44 #if CONFIG_CHARGING
  45 unsigned int power_input_status(void)
  46 {
  47     unsigned int status = POWER_INPUT_NONE;
  48
  49 #if defined(IPOD_NANO) || defined(IPOD_VIDEO)
  50     if ((GPIOL_INPUT_VAL & 0x08) == 0)
  51         status = POWER_INPUT_MAIN_CHARGER;
  52
  53     if ((GPIOL_INPUT_VAL & 0x10) != 0)
  54         status |= POWER_INPUT_USB_CHARGER;
  55     /* */
  56 #elif defined(IPOD_4G) || defined(IPOD_COLOR) \
  57        || defined(IPOD_MINI) || defined(IPOD_MINI2G)
  58     /* C2 is firewire power */
  59     if ((GPIOC_INPUT_VAL & 0x04) == 0)
  60         status = POWER_INPUT_MAIN_CHARGER;
  61
  62     if ((GPIOD_INPUT_VAL & 0x08) != 0)
  63         status |= POWER_INPUT_USB_CHARGER;
  64     /* */
  65 #elif defined(IPOD_3G)
  66     /* firewire power */
  67     if ((GPIOC_INPUT_VAL & 0x10) == 0)
  68         status = POWER_INPUT_MAIN_CHARGER;
  69     /* */
  70 #else
  71     /* This needs filling in for other ipods. */
  72 #endif
  73
  74     return status;
  75 }
  76
  77 /* Returns true if the unit is charging the batteries. */
  78 bool charging_state(void) {
  79 #if defined(IPOD_COLOR)
  80     /* 0x70000088 appears to be the input value for GPO32 bits.
  81        Write a zero to 0x70000088 before reading.
  82        To enable input set the corresponding 0x7000008C bit,
  83        and clear the corresponding GPO32_ENABLE bit. */
  84     outl(0, 0x70000088);
  85     return (inl(0x70000088) & 1)?false:true;
  86 #else
  87     return (GPIOB_INPUT_VAL & 0x01)?false:true;
  88 #endif
  89 }
  90 #endif /* CONFIG_CHARGING */
  91
  92
  93 void ide_power_enable(bool on)
  94 {
  95 #if defined(IPOD_1G2G) || defined(IPOD_3G)
  96     if (on)
  97         GPIOC_OUTPUT_VAL &= ~0x40;
  98     else
  99         GPIOC_OUTPUT_VAL |= 0x40;
 100 #elif defined(IPOD_4G) || defined(IPOD_COLOR) \
 101    || defined(IPOD_MINI) || defined(IPOD_MINI2G)
 102     if (on)
 103     {
 104         GPIO_CLEAR_BITWISE(GPIOJ_OUTPUT_VAL, 0x04);
 105         DEV_EN |= DEV_IDE0;
 106     }
 107     else
 108     {
 109         DEV_EN &= ~DEV_IDE0;
 110         GPIO_SET_BITWISE(GPIOJ_OUTPUT_VAL, 0x04);
 111     }
 112 #elif defined(IPOD_VIDEO)
 113     if (on)
 114     {
 115         GPO32_VAL &= ~0x40000000;
 116         DEV_EN |= DEV_IDE0;
 117     }
 118     else
 119     {
 120         DEV_EN &= ~DEV_IDE0;
 121         GPO32_VAL |= 0x40000000;
 122     }
 123 #else /* Nano */
 124     (void)on;  /* Do nothing. */
 125 #endif
 126 }
 127
 128 bool ide_powered(void)
 129 {
 130 #if defined(IPOD_1G2G) || defined(IPOD_3G)
 131     return !(GPIOC_OUTPUT_VAL & 0x40);
 132 #elif defined(IPOD_4G) || defined(IPOD_COLOR) \
 133    || defined(IPOD_MINI) || defined(IPOD_MINI2G)
 134     return !(GPIOJ_OUTPUT_VAL & 0x04);
 135 #elif defined(IPOD_VIDEO)
 136     return !(GPO32_VAL & 0x40000000);
 137 #else /* Nano */
 138     return true; /* Pretend we are always powered */
 139 #endif
 140 }
 141
 142 void power_off(void)
 143 {
 144 #if defined(HAVE_LCD_COLOR) && !defined(HAVE_LCD_SHUTDOWN)
 145     /* Clear the screen and backdrop to
 146     remove ghosting effect on shutdown */
 147     lcd_set_backdrop(NULL);
 148     lcd_set_background(LCD_WHITE);
 149     lcd_clear_display();
 150     lcd_update();
 151     sleep(HZ/16);
 152 #endif
 153
 154 #ifndef BOOTLOADER
 155 #ifdef IPOD_1G2G
 156     /* we cannot turn off the 1st gen/ 2nd gen yet. Need to figure out sleep mode. */
 157     system_reboot();
 158 #else
 159     /* We don't turn off the ipod, we put it in a deep sleep */
 160     pcf50605_standby_mode();
 161 #endif
 162 #endif
 163 }