From ef999bf6ae43ef567c76ac0b473c7d4340760ab2 Mon Sep 17 00:00:00 2001
From: Per Persson <per.xb.persson@stericsson.com>
Date: Fri, 20 May 2011 11:40:47 +0200
Subject: HDMIservice added

Initial commit

ST-Ericsson ID: 326691
ST-Ericsson FOSS-OUT ID: STETL-FOSS-OUT-10177

Signed-off-by: Per Persson <per.xb.persson@stericsson.com>
---
 src/kevent.c | 159 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 159 insertions(+)
 create mode 100644 src/kevent.c

(limited to 'src/kevent.c')

diff --git a/src/kevent.c b/src/kevent.c
new file mode 100644
index 0000000..f6375c4
--- /dev/null
+++ b/src/kevent.c
@@ -0,0 +1,159 @@
+/*
+ * 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);
+}
-- 
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