firmware/target/arm/pnx0101/iriver-ifp7xx/button-ifp7xx.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 by Barry Wardell
  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
  22
  23 #include <stdlib.h>
  24 #include "config.h"
  25 #include "cpu.h"
  26 #include "system.h"
  27 #include "button.h"
  28 #include "kernel.h"
  29 #include "backlight.h"
  30 #include "adc.h"
  31
  32
  33 void button_init_device(void)
  34 {
  35
  36 }
  37
  38 bool button_hold(void)
  39 {
  40     return (GPIO5_READ & 4) ? false : true;
  41 }
  42
  43 /*
  44  * Get button pressed from hardware
  45  */
  46 int button_read_device(void)
  47 {
  48     int btn = BUTTON_NONE;
  49     int data;
  50     static bool hold_button = false;
  51     bool hold_button_old;
  52
  53     /* normal buttons */
  54     hold_button_old = hold_button;
  55     hold_button = button_hold();
  56
  57     if (hold_button != hold_button_old)
  58         backlight_hold_changed(hold_button);
  59
  60     if (!button_hold())
  61     {
  62         data = adc_read(ADC_BUTTONS);
  63         if (data < 0x35c)
  64         {
  65             if (data < 0x151)
  66                 if (data < 0xc7)
  67                     if (data < 0x41)
  68                         btn = BUTTON_LEFT;
  69                     else
  70                         btn = BUTTON_RIGHT;
  71                 else
  72                     btn = BUTTON_SELECT;
  73             else
  74                 if (data < 0x268)
  75                     if (data < 0x1d7)
  76                         btn = BUTTON_UP;
  77                     else
  78                         btn = BUTTON_DOWN;
  79                 else
  80                     if (data < 0x2f9)
  81                         btn = BUTTON_EQ;
  82                     else
  83                         btn = BUTTON_MODE;
  84         }
  85
  86         if (adc_read(ADC_BUTTON_PLAY) < 0x64)
  87             btn |= BUTTON_PLAY;
  88     }
  89     return btn;
  90 }