summaryrefslogtreecommitdiffstats
path: root/firmware/target/hosted/xduoo/button-xduoo.c
blob: 99b09083785d1648a2d98040a9cb53d3b466fee1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
/***************************************************************************
 *             __________               __   ___
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 *
 * Copyright (C) 2017 Marcin Bukat
 * Copyright (C) 2018 Roman Stolyarov
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/
#include <poll.h>
//#include <dir.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <linux/input.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>

#include "sysfs.h"
#include "button.h"
#include "button-target.h"
#include "panic.h"

#include "kernel.h"
#include "backlight.h"
#include "backlight-target.h"
#include "xduoolinux_codec.h"

#define NR_POLL_DESC    3
static struct pollfd poll_fds[NR_POLL_DESC];

static int button_map(int keycode)
{
    switch(keycode)
    {
        case KEY_BACK:
            return BUTTON_HOME;

        case KEY_MENU:
            return BUTTON_OPTION;

        case KEY_UP:
            return BUTTON_PREV;

        case KEY_DOWN:
            return BUTTON_NEXT;

        case KEY_ENTER:
            return BUTTON_PLAY;

        case KEY_VOLUMEUP:
            return BUTTON_VOL_UP;

        case KEY_VOLUMEDOWN:
            return BUTTON_VOL_DOWN;

        case KEY_POWER:
            return BUTTON_POWER;

        default:
            return 0;
    }
}

void button_init_device(void)
{
    const char * const input_devs[] = {
        "/dev/input/event0",
        "/dev/input/event1",
        "/dev/input/event2"
    };

    for(int i = 0; i < NR_POLL_DESC; i++)
    {
        int fd = open(input_devs[i], O_RDWR);

        if(fd < 0)
        {
            panicf("Cannot open input device: %s\n", input_devs[i]);
        }

        poll_fds[i].fd = fd;
        poll_fds[i].events = POLLIN;
        poll_fds[i].revents = 0;
    }
}

int button_read_device(void)
{
    static int button_bitmap = 0;
    struct input_event event;

    /* check if there are any events pending and process them */
    while(poll(poll_fds, NR_POLL_DESC, 0))
    {
        for(int i = 0; i < NR_POLL_DESC; i++)
        {
            /* read only if non-blocking */
            if(poll_fds[i].revents & POLLIN)
            {
                int size = read(poll_fds[i].fd, &event, sizeof(event));
                if(size == (int)sizeof(event))
                {
                    int keycode = event.code;
                    /* event.value == 1 means press
                     * event.value == 0 means release
                     */
                    bool press = event.value ? true : false;

                    /* map linux event code to rockbox button bitmap */
                    if(press)
                    {
                        button_bitmap |= button_map(keycode);
                    }
                    else
                    {
                        button_bitmap &= ~button_map(keycode);
                    }
                }
            }
        }
    }

    return button_bitmap;
}

bool headphones_inserted(void)
{
    int ps = xduoo_get_outputs();

    return (ps == 2 || ps == 3);
}

bool lineout_inserted(void)
{
    int ps = xduoo_get_outputs();

    return (ps == 1);
}

void button_close_device(void)
{
    /* close descriptors */
    for(int i = 0; i < NR_POLL_DESC; i++)
    {
        close(poll_fds[i].fd);
    }
}