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/*
* Copyright (C) ST-Ericsson SA 2011
* Author: Per Persson per.xb.persson@stericsson.com for
* ST-Ericsson.
*
* License terms:
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <unistd.h> /* Symbolic Constants */
#include <sys/types.h> /* Primitive System Data Types */
#include <linux/types.h>
#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>
#ifdef ANDROID
#include <utils/Log.h>
#endif
#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;
int ret = 0;
evclrfd = open(EVENTCLR_FILE, O_WRONLY);
if (evclrfd < 0) {
LOGHDMILIB(" failed to open %s", EVENTCLR_FILE);
return -1;
}
if (write(evclrfd, &mask, 1) != 1)
ret = -2;
close(evclrfd);
return ret;
}
/*
* 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);
}
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