firmware/target/arm/s5l8700/meizu-m6sp/button-m6sp.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 Bertrik Sikken
  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 <stdbool.h>
  23 #include "config.h"
  24
  25 #include "inttypes.h"
  26 #include "s5l8700.h"
  27 #include "button-target.h"
  28
  29 /*  Button driver for the meizu M6SP
  30
  31     Future improvements:
  32     * touch strip support
  33     * left/right buttons (probably read out with ADC0)
  34     * unify with m3/m6sl button driver if possible
  35
  36  */
  37
  38
  39 void button_init_device(void)
  40 {
  41     PCON0 &= ~(0x3 << 10);  /* P0.5 hold switch */
  42     PCON0 &= ~(0x3 << 14);  /* P0.7 enter button */
  43     PCON1 &= ~(0xF << 16);  /* P1.4 play/power button */
  44 }
  45
  46 int button_read_device(void)
  47 {
  48     int buttons = 0;
  49
  50     if (button_hold()) {
  51         return 0;
  52     }
  53
  54     if ((PDAT1 & (1 << 4)) == 0) {
  55         buttons |= BUTTON_PLAY;
  56     }
  57     if ((PDAT0 & (1 << 7)) == 0) {
  58         buttons |= BUTTON_ENTER;
  59     }
  60
  61     return buttons;
  62 }
  63
  64 bool button_hold(void)
  65 {
  66     return ((PDAT0 & (1 << 5)) != 0);
  67 }
  68