firmware/target/hosted/ypr0/button-ypr0.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id: button-sdl.c 30482 2011-09-08 14:53:28Z kugel $
   9  *
  10  * Copyright (C) 2011 Lorenzo Miori
  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 "config.h"
  23 #include "button.h"
  24 #include "kernel.h"
  25 #include "system.h"
  26 #include "button-target.h"
  27 #include <gpio_ypr0.h> /* For headphones sense and buttons */
  28
  29 int button_read_device(void)
  30 {
  31     int key = BUTTON_NONE;
  32
  33     /* Check for all the keys */
  34     if (!gpio_control(DEV_CTRL_GPIO_IS_HIGH, GPIO_USER_KEY, 0, 0)) {
  35         key |= BUTTON_USER;
  36     }
  37     if (!gpio_control(DEV_CTRL_GPIO_IS_HIGH, GPIO_CENTRAL_KEY, 0, 0)) {
  38         key |= BUTTON_SELECT;
  39     }
  40     if (!gpio_control(DEV_CTRL_GPIO_IS_HIGH, GPIO_UP_KEY, 0, 0)) {
  41         key |= BUTTON_UP;
  42     }
  43     if (!gpio_control(DEV_CTRL_GPIO_IS_HIGH, GPIO_DOWN_KEY, 0, 0)) {
  44         key |= BUTTON_DOWN;
  45     }
  46     if (!gpio_control(DEV_CTRL_GPIO_IS_HIGH, GPIO_LEFT_KEY, 0, 0)) {
  47         key |= BUTTON_LEFT;
  48     }
  49     if (!gpio_control(DEV_CTRL_GPIO_IS_HIGH, GPIO_RIGHT_KEY, 0, 0)) {
  50         key |= BUTTON_RIGHT;
  51     }
  52     if (!gpio_control(DEV_CTRL_GPIO_IS_HIGH, GPIO_MENU_KEY, 0, 0)) {
  53         key |= BUTTON_MENU;
  54     }
  55     if (!gpio_control(DEV_CTRL_GPIO_IS_HIGH, GPIO_BACK_KEY, 0, 0)) {
  56         key |= BUTTON_BACK;
  57     }
  58     if (gpio_control(DEV_CTRL_GPIO_IS_HIGH, GPIO_POWER_KEY, 0, 0)) {
  59         key |= BUTTON_POWER;
  60     }
  61
  62     return key;
  63 }
  64
  65 bool headphones_inserted(void)
  66 {
  67     /* GPIO low - 0 - means headphones inserted */
  68     return !gpio_control(DEV_CTRL_GPIO_IS_HIGH, GPIO_HEADPHONE_SENSE, 0, 0);
  69 }
  70
  71 void button_init_device(void)
  72 {
  73     /* Setup GPIO pin for headphone sense, copied from OF */
  74     gpio_control(DEV_CTRL_GPIO_SET_MUX, GPIO_HEADPHONE_SENSE, CONFIG_SION, PAD_CTL_47K_PU);
  75     gpio_control(DEV_CTRL_GPIO_SET_INPUT, GPIO_HEADPHONE_SENSE, CONFIG_SION, PAD_CTL_47K_PU);
  76
  77     /* No need to initialize any GPIO pin, since this is done loading the r0Btn module */
  78 }
  79
  80 #ifdef BUTTON_DRIVER_CLOSE
  81 /* I'm not sure it's called at shutdown...give a check! */
  82 void button_close_device(void)
  83 {
  84     /* Don't know the precise meaning, but it's done as in the OF, so copied there */
  85     gpio_control(DEV_CTRL_GPIO_UNSET_MUX, GPIO_HEADPHONE_SENSE, CONFIG_SION, 0);
  86 }
  87 #endif /* BUTTON_DRIVER_CLOSE */