firmware/target/arm/samsung/button-yh82x_yh92x.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 by Mark Arigo
  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 #include "system.h"
  23 #include "button.h"
  24 #include "backlight.h"
  25
  26 void button_init_device(void)
  27 {
  28     /* TODO...for now, hardware initialisation is done by the OF bootloader */
  29 }
  30
  31 bool button_hold(void)
  32 {
  33     return (~GPIOA_INPUT_VAL & 0x1);
  34 }
  35
  36 /*
  37  * Get button pressed from hardware
  38  */
  39 int button_read_device(void)
  40 {
  41     int btn = BUTTON_NONE;
  42     static bool hold_button = false;
  43     bool hold_button_old;
  44
  45     /* Hold */
  46     hold_button_old = hold_button;
  47     hold_button = button_hold();
  48
  49 #ifndef BOOTLOADER
  50     if (hold_button != hold_button_old)
  51         backlight_hold_changed(hold_button);
  52 #endif
  53
  54     /* device buttons */
  55     if (!hold_button)
  56     {
  57         if (~GPIOA_INPUT_VAL & 0x04) btn |= BUTTON_LEFT;
  58         if (~GPIOA_INPUT_VAL & 0x20) btn |= BUTTON_RIGHT;
  59         if (~GPIOA_INPUT_VAL & 0x10) btn |= BUTTON_UP;
  60         if (~GPIOA_INPUT_VAL & 0x08) btn |= BUTTON_DOWN;
  61         if (~GPIOA_INPUT_VAL & 0x02) btn |= BUTTON_FFWD;
  62         if (~GPIOA_INPUT_VAL & 0x80) btn |= BUTTON_REW;
  63         if (~GPIOA_INPUT_VAL & 0x40) btn |= BUTTON_REC;
  64 #if defined(SAMSUNG_YH820)
  65         if ( GPIOB_INPUT_VAL & 0x80) btn |= BUTTON_PLAY;
  66 #elif defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
  67         if ( GPIOD_INPUT_VAL & 0x04) btn |= BUTTON_PLAY;
  68 #endif
  69     }
  70
  71     return btn;
  72 }