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
|
/*
* Copyright (C) ST-Ericsson SA 2011
* Author: Per Persson per.xb.persson@stericsson.com for
* ST-Ericsson.
* License terms: <FOSS license>.
*/
#include <unistd.h> /* Symbolic Constants */
#include <sys/types.h> /* Primitive System Data Types */
#include <errno.h> /* Errors */
#include <stdarg.h>
#include <stdio.h> /* Input/Output */
#include <stdlib.h> /* General Utilities */
#include <pthread.h> /* POSIX Threads */
#include <string.h> /* String handling */
#include <fcntl.h>
#include <time.h>
#include <ctype.h>
#include <sys/poll.h>
#include <utils/Log.h>
#include "../include/hdmi_service_api.h"
#include "../include/hdmi_service_local.h"
static int hdmieventfile_open(struct pollfd *pollfds)
{
pollfds->fd = open(EVENT_FILE, O_RDONLY);
if (pollfds->fd < 0) {
LOGHDMILIB(" failed to open %s", EVENT_FILE);
return -1;
}
pollfds->events = POLLERR | POLLPRI;
return 0;
}
static int hdmieventfile_read(int fd)
{
int read_res;
char buf[128];
int events;
read_res = read(fd, buf, sizeof(buf));
/* seek back so we can read the new state */
lseek(fd, 0, SEEK_SET);
LOGHDMILIB2("read_res:%d", read_res);
if (read_res != POLL_READ_SIZE)
return HDMIEVENT_POLLSIZEFAIL;
events = *buf;
LOGHDMILIB2("events read:%02x", events);
return events;
}
static int hdmieventfile_poll(struct pollfd *pollfds)
{
int result;
int timeout = -1; /* Timeout in msec. */
result = poll(pollfds, 1, timeout);
switch (result) {
case 0:
LOGHDMILIB2("%s", "timeout");
break;
case -1:
LOGHDMILIB2("%s", "poll error");
break;
default:
if (pollfds->revents & POLLERR)
LOGHDMILIB2("res:%d poll done", result);
else {
LOGHDMILIB2("rev:%x res:%d poll done2",
pollfds->revents, result);
}
break;
}
return 0;
}
static int hdmieventfile_close(int fd)
{
LOGHDMILIB("%s", __func__);
close(fd);
return 0;
}
int hdmievclr(__u8 mask)
{
int evclrfd;
evclrfd = open(EVENTCLR_FILE, O_WRONLY);
if (evclrfd < 0) {
LOGHDMILIB(" failed to open %s", EVENTCLR_FILE);
return -1;
}
write(evclrfd, &mask, 1);
close(evclrfd);
return 0;
}
/*
* Reading of kernel events
*/
void thread_kevent_fn(void *arg)
{
int event;
struct pollfd pollfds;
LOGHDMILIB("%s begin", __func__);
/*
* Note: events are subscribed at call to api function hdmi_enable
* Until then no events will occur.
*/
/* Open the event file */
hdmieventfile_open(&pollfds);
while (1) {
/* Read poll event file */
event = hdmieventfile_read(pollfds.fd);
LOGHDMILIB("kevent:%x", event);
if (event == HDMIEVENT_POLLSIZEFAIL) {
usleep(100000);
/* Close event file */
hdmieventfile_close(pollfds.fd);
/* Open the event file */
hdmieventfile_open(&pollfds);
} else {
/* Signal main thread */
hdmi_event(event);
if (event & HDMIEVENT_WAKEUP)
break;
}
/* Poll plug event file */
hdmieventfile_poll(&pollfds);
}
/* Clear events */
hdmievclr(EVENTMASK_ALL);
/* Close event file */
hdmieventfile_close(pollfds.fd);
LOGHDMILIB("%s end", __func__);
/* Exit thread */
pthread_exit(NULL);
}
|
