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 "adc.h"
  25 #include "kernel.h"
  26 #include "system.h"
  27 #include "power.h"
  28 #include "logf.h"
  29 #include "pcf50605.h"
  30 #include "usb.h"
  31 #include "lcd.h"
  32
  33 void power_init(void)
  34 {
  35 #if defined(IPOD_1G2G) || defined(IPOD_3G)
  36     GPIOC_ENABLE |= 0x40;      /* GPIO C6 is HDD power (low active) */
  37     GPIOC_OUTPUT_VAL &= ~0x40; /* on by default */
  38     GPIOC_OUTPUT_EN |= 0x40;   /* enable output */
  39 #endif
  40 #ifndef IPOD_1G2G
  41     pcf50605_init();
  42 #endif
  43 }
  44
  45 #if CONFIG_CHARGING
  46 unsigned int power_input_status(void)
  47 {
  48     unsigned int status = POWER_INPUT_NONE;
  49
  50 #if defined(IPOD_NANO) || defined(IPOD_VIDEO)
  51     if ((GPIOL_INPUT_VAL & 0x08) == 0)
  52         status = POWER_INPUT_MAIN_CHARGER;
  53
  54     if ((GPIOL_INPUT_VAL & 0x10) != 0)
  55         status |= POWER_INPUT_USB_CHARGER;
  56     /* */
  57 #elif defined(IPOD_4G) || defined(IPOD_COLOR) \
  58        || defined(IPOD_MINI) || defined(IPOD_MINI2G)
  59     /* C2 is firewire power */
  60     if ((GPIOC_INPUT_VAL & 0x04) == 0)
  61         status = POWER_INPUT_MAIN_CHARGER;
  62     /* */
  63 #elif defined(IPOD_3G)
  64     /* firewire power */
  65     if ((GPIOC_INPUT_VAL & 0x10) == 0)
  66         status = POWER_INPUT_MAIN_CHARGER;
  67     /* */
  68 #else
  69     /* This needs filling in for other ipods. */
  70 #endif
  71
  72     return status;
  73 }
  74
  75 /* Returns true if the unit is charging the batteries. */
  76 bool charging_state(void) {
  77     return (GPIOB_INPUT_VAL & 0x01)?false:true;
  78 }
  79 #endif /* CONFIG_CHARGING */
  80
  81
  82 void ide_power_enable(bool on)
  83 {
  84 #if defined(IPOD_1G2G) || defined(IPOD_3G)
  85     if (on)
  86         GPIOC_OUTPUT_VAL &= ~0x40;
  87     else
  88         GPIOC_OUTPUT_VAL |= 0x40;
  89 #elif defined(IPOD_4G) || defined(IPOD_COLOR) \
  90    || defined(IPOD_MINI) || defined(IPOD_MINI2G)
  91     if (on)
  92     {
  93         GPIO_CLEAR_BITWISE(GPIOJ_OUTPUT_VAL, 0x04);
  94         DEV_EN |= DEV_IDE0;
  95     }
  96     else
  97     {
  98         DEV_EN &= ~DEV_IDE0;
  99         GPIO_SET_BITWISE(GPIOJ_OUTPUT_VAL, 0x04);
 100     }
 101 #elif defined(IPOD_VIDEO)
 102     if (on)
 103     {
 104         GPO32_VAL &= ~0x40000000;
 105         DEV_EN |= DEV_IDE0;
 106     }
 107     else
 108     {
 109         DEV_EN &= ~DEV_IDE0;
 110         GPO32_VAL |= 0x40000000;
 111     }
 112 #else /* Nano */
 113     (void)on;  /* Do nothing. */
 114 #endif
 115 }
 116
 117 bool ide_powered(void)
 118 {
 119 #if defined(IPOD_1G2G) || defined(IPOD_3G)
 120     return !(GPIOC_OUTPUT_VAL & 0x40);
 121 #elif defined(IPOD_4G) || defined(IPOD_COLOR) \
 122    || defined(IPOD_MINI) || defined(IPOD_MINI2G)
 123     return !(GPIOJ_OUTPUT_VAL & 0x04);
 124 #elif defined(IPOD_VIDEO)
 125     return !(GPO32_VAL & 0x40000000);
 126 #else /* Nano */
 127     return true; /* Pretend we are always powered */
 128 #endif
 129 }
 130
 131 void power_off(void)
 132 {
 133 #if defined(HAVE_LCD_COLOR) && !defined(HAVE_LCD_SHUTDOWN)
 134     /* Clear the screen and backdrop to
 135     remove ghosting effect on shutdown */
 136     lcd_set_backdrop(NULL);
 137     lcd_set_background(LCD_WHITE);
 138     lcd_clear_display();
 139     lcd_update();
 140     sleep(HZ/16);
 141 #endif
 142
 143 #ifndef BOOTLOADER
 144 #ifdef IPOD_1G2G
 145     /* we cannot turn off the 1st gen/ 2nd gen yet. Need to figure out sleep mode. */
 146     system_reboot();
 147 #else
 148     /* We don't turn off the ipod, we put it in a deep sleep */
 149     pcf50605_standby_mode();
 150 #endif
 151 #endif
 152 }