104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: button-sdl.c 30482 2011-09-08 14:53:28Z kugel $
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*
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* Copyright (C) 2011 Lorenzo Miori
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h> /* EXIT_SUCCESS */
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#include "config.h"
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#include "button.h"
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#include "kernel.h"
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#include "system.h"
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#include "button-target.h"
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/* R0 physical key codes */
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enum ypr0_buttons {
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R0BTN_NONE = BUTTON_NONE,
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R0BTN_POWER = 1,
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R0BTN_UP,
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R0BTN_DOWN,
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R0BTN_RIGHT,
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R0BTN_LEFT,
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R0BTN_CENTRAL,
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R0BTN_MENU,
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R0BTN_BACK,
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R0BTN_3DOTS = 11,
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};
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static int r0_btn_fd = 0;
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/* Samsung keypad driver doesn't allow multiple key combinations :( */
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static enum ypr0_buttons r0_read_key(void)
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{
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unsigned char keys;
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if (r0_btn_fd < 0)
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return 0;
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if (read(r0_btn_fd, &keys, 1))
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return keys;
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return 0;
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}
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/* Conversion from physical keypress code to logic key code */
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static int key_to_button(enum ypr0_buttons keyboard_button)
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{
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switch (keyboard_button)
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{
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default: return BUTTON_NONE;
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case R0BTN_POWER: return BUTTON_POWER;
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case R0BTN_UP: return BUTTON_UP;
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case R0BTN_DOWN: return BUTTON_DOWN;
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case R0BTN_RIGHT: return BUTTON_RIGHT;
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case R0BTN_LEFT: return BUTTON_LEFT;
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case R0BTN_CENTRAL: return BUTTON_SELECT;
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case R0BTN_MENU: return BUTTON_MENU;
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case R0BTN_BACK: return BUTTON_BACK;
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case R0BTN_3DOTS: return BUTTON_USER;
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}
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}
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int button_read_device(void)
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{
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return key_to_button(r0_read_key());
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}
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/* Open the keypad device: it is offered by r0Btn.ko module */
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void button_init_device(void)
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{
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r0_btn_fd = open("/dev/r0Btn", O_RDONLY);
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if (r0_btn_fd < 0)
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printf("/dev/r0Btn open error!");
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}
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#ifdef BUTTON_DRIVER_CLOSE
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/* I'm not sure it's called at shutdown...give a check! */
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void button_close_device(void)
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{
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if (r0_btn_fd >= 0) {
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close(r0_btn_fd);
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printf("/dev/r0Btn closed!");
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}
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}
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#endif /* BUTTON_DRIVER_CLOSE */
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