[ifxmips]

* adds a rewrite of the tapi drivers + sip app. this is the result of lars' gsoc 2010 project, Thanks !


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23840 3c298f89-4303-0410-b956-a3cf2f4a3e73

19 files changed, 1595 insertions, 0 deletions

diff --git a/package/libtapi/Makefile b/package/libtapi/Makefile
new file mode 100644
index 0000000000..f85d554768
--- /dev/null
+++ b/package/libtapi/Makefile
@@ -0,0 +1,43 @@
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=libtapi
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+define Package/libtapi
+  SECTION:=libs
+  CATEGORY:=Libraries
+  TITLE:=libtapi
+  DEPENDS:=@TARGET_ifxmips_danube
+endef
+
+define Build/Prepare
+	mkdir -p $(PKG_BUILD_DIR)
+	$(CP) ./src/* $(PKG_BUILD_DIR)/
+endef
+
+define Build/Compile
+	CFLAGS="$(TARGT_CPPFLAGS) $(TARGET_CFLAGS)" \
+	$(MAKE) -C $(PKG_BUILD_DIR) \
+		$(TARGET_CONFIGURE_OPTS)
+endef
+
+define Build/InstallDev
+	$(INSTALL_DIR) $(1)/usr/{include,lib}
+	$(INSTALL_DATA) $(PKG_BUILD_DIR)/*.h $(1)/usr/include/
+	$(INSTALL_DATA) $(PKG_BUILD_DIR)/*.so $(1)/usr/lib/
+endef
+
+define Package/libtapi/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/libtapi.so* $(1)/usr/lib/
+endef
+
+$(eval $(call BuildPackage,libtapi))
diff --git a/package/libtapi/src/Makefile b/package/libtapi/src/Makefile
new file mode 100644
index 0000000000..70b46eb577
--- /dev/null
+++ b/package/libtapi/src/Makefile
@@ -0,0 +1,27 @@
+ifndef CFLAGS
+CFLAGS = -O2 -g -I ../src
+endif
+
+FPIC=-fPIC
+
+all: libtapi.so
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c -o $@ $^ $(FPIC)
+
+TAPI_OBJS = \
+	timer_fd.o \
+	events.o \
+	tapi-port.o \
+	tapi-device.o \
+	tapi-session.o \
+	tapi-stream.o
+
+tapidemo: tapidemo.o libtapi.so
+	$(CC) $(LDFLAGS) -o $@ $^
+
+libtapi.so: $(TAPI_OBJS)
+	$(CC) $(LDFLAGS) -shared -o $@ $^ $(FPIC)
+
+clean:
+	rm -rf *.o *.so
diff --git a/package/libtapi/src/dialdetector.c b/package/libtapi/src/dialdetector.c
new file mode 100644
index 0000000000..ff91b37aa2
--- /dev/null
+++ b/package/libtapi/src/dialdetector.c
@@ -0,0 +1,109 @@
+#include <linux/input.h>
+#include <sys/epoll.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "events.h"
+#include "timerfd.h"
+
+#include "tapi-port.h"
+#include "dialdetector.h"
+
+static const struct itimerspec dialdetector_timeout = {
+	.it_value.tv_sec = 3,
+};
+
+static void dialdetector_note_digit(struct dialdetector *d, unsigned char digit)
+{
+	printf("note digit: %d\n", d->num_digits);
+	d->digits[d->num_digits] = digit;
+	++d->num_digits;
+}
+
+static void dialdetector_reset(struct dialdetector *d)
+{
+	event_unregister(d->timer_fd);
+	d->num_digits = 0;
+	d->state = DIALDETECTOR_IDLE;
+}
+
+static bool dialdetector_timeout_event(int events, void *data)
+{
+	char num[20];
+	struct dialdetector *dialdetector = data;
+	int i;
+
+	for (i = 0; i < dialdetector->num_digits; ++i) {
+		num[i] = '0' + dialdetector->digits[i];
+	}
+	num[i] = '\0';
+
+	printf("Dialing: %s\n", num);
+	dialdetector->dial_callback(dialdetector->port, dialdetector->num_digits,
+	dialdetector->digits);
+
+	dialdetector_reset(dialdetector);
+
+	return false;
+}
+
+static void dialdetector_port_event(struct tapi_port *port,
+	struct tapi_event *event, void *data)
+{
+	struct dialdetector *d = data;
+
+	printf("port event: %d %d\n", d->state, event->hook.on);
+
+	switch (d->state) {
+	case DIALDETECTOR_IDLE:
+		if (event->type == TAPI_EVENT_TYPE_HOOK && event->hook.on == false) {
+			d->state = DIALDETECTOR_WAIT_FOR_NUMBER;
+			event_register(d->timer_fd, EPOLLIN, &d->timeout_cb);
+			timerfd_settime(d->timer_fd, 0, &dialdetector_timeout, NULL);
+		}
+		break;
+	case DIALDETECTOR_WAIT_FOR_NUMBER:
+	case DIALDETECTOR_WAIT_FOR_NUMBER_TIMEOUT:
+		switch (event->type) {
+		case TAPI_EVENT_TYPE_HOOK:
+			if (event->hook.on == true)
+				dialdetector_reset(d);
+			break;
+		case TAPI_EVENT_TYPE_DTMF:
+			if (d->state == DIALDETECTOR_WAIT_FOR_NUMBER)
+				event_register(d->timer_fd, EPOLLIN, &d->timeout_cb);
+			timerfd_settime(d->timer_fd, 0, &dialdetector_timeout, NULL);
+			d->state = DIALDETECTOR_WAIT_FOR_NUMBER_TIMEOUT;
+			dialdetector_note_digit(d, event->dtmf.code);
+			break;
+		default:
+			break;
+		}
+	}
+}
+
+struct dialdetector *dialdetector_alloc(struct tapi_port *port)
+{
+	struct dialdetector *dialdetector;
+	dialdetector = malloc(sizeof(*dialdetector));
+
+	dialdetector->timer_fd = timerfd_create(CLOCK_MONOTONIC, 0);
+	dialdetector->port = port;
+	dialdetector->num_digits = 0;
+	dialdetector->state = DIALDETECTOR_IDLE;
+
+	dialdetector->timeout_cb.callback = dialdetector_timeout_event;
+	dialdetector->timeout_cb.data = dialdetector;
+
+	dialdetector->port_listener.callback = dialdetector_port_event;
+	dialdetector->port_listener.data = dialdetector;
+
+	tapi_port_register_event(port, &dialdetector->port_listener);
+
+
+	return dialdetector;
+}
diff --git a/package/libtapi/src/dialdetector.h b/package/libtapi/src/dialdetector.h
new file mode 100644
index 0000000000..ff91b37aa2
--- /dev/null
+++ b/package/libtapi/src/dialdetector.h
@@ -0,0 +1,109 @@
+#include <linux/input.h>
+#include <sys/epoll.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "events.h"
+#include "timerfd.h"
+
+#include "tapi-port.h"
+#include "dialdetector.h"
+
+static const struct itimerspec dialdetector_timeout = {
+	.it_value.tv_sec = 3,
+};
+
+static void dialdetector_note_digit(struct dialdetector *d, unsigned char digit)
+{
+	printf("note digit: %d\n", d->num_digits);
+	d->digits[d->num_digits] = digit;
+	++d->num_digits;
+}
+
+static void dialdetector_reset(struct dialdetector *d)
+{
+	event_unregister(d->timer_fd);
+	d->num_digits = 0;
+	d->state = DIALDETECTOR_IDLE;
+}
+
+static bool dialdetector_timeout_event(int events, void *data)
+{
+	char num[20];
+	struct dialdetector *dialdetector = data;
+	int i;
+
+	for (i = 0; i < dialdetector->num_digits; ++i) {
+		num[i] = '0' + dialdetector->digits[i];
+	}
+	num[i] = '\0';
+
+	printf("Dialing: %s\n", num);
+	dialdetector->dial_callback(dialdetector->port, dialdetector->num_digits,
+	dialdetector->digits);
+
+	dialdetector_reset(dialdetector);
+
+	return false;
+}
+
+static void dialdetector_port_event(struct tapi_port *port,
+	struct tapi_event *event, void *data)
+{
+	struct dialdetector *d = data;
+
+	printf("port event: %d %d\n", d->state, event->hook.on);
+
+	switch (d->state) {
+	case DIALDETECTOR_IDLE:
+		if (event->type == TAPI_EVENT_TYPE_HOOK && event->hook.on == false) {
+			d->state = DIALDETECTOR_WAIT_FOR_NUMBER;
+			event_register(d->timer_fd, EPOLLIN, &d->timeout_cb);
+			timerfd_settime(d->timer_fd, 0, &dialdetector_timeout, NULL);
+		}
+		break;
+	case DIALDETECTOR_WAIT_FOR_NUMBER:
+	case DIALDETECTOR_WAIT_FOR_NUMBER_TIMEOUT:
+		switch (event->type) {
+		case TAPI_EVENT_TYPE_HOOK:
+			if (event->hook.on == true)
+				dialdetector_reset(d);
+			break;
+		case TAPI_EVENT_TYPE_DTMF:
+			if (d->state == DIALDETECTOR_WAIT_FOR_NUMBER)
+				event_register(d->timer_fd, EPOLLIN, &d->timeout_cb);
+			timerfd_settime(d->timer_fd, 0, &dialdetector_timeout, NULL);
+			d->state = DIALDETECTOR_WAIT_FOR_NUMBER_TIMEOUT;
+			dialdetector_note_digit(d, event->dtmf.code);
+			break;
+		default:
+			break;
+		}
+	}
+}
+
+struct dialdetector *dialdetector_alloc(struct tapi_port *port)
+{
+	struct dialdetector *dialdetector;
+	dialdetector = malloc(sizeof(*dialdetector));
+
+	dialdetector->timer_fd = timerfd_create(CLOCK_MONOTONIC, 0);
+	dialdetector->port = port;
+	dialdetector->num_digits = 0;
+	dialdetector->state = DIALDETECTOR_IDLE;
+
+	dialdetector->timeout_cb.callback = dialdetector_timeout_event;
+	dialdetector->timeout_cb.data = dialdetector;
+
+	dialdetector->port_listener.callback = dialdetector_port_event;
+	dialdetector->port_listener.data = dialdetector;
+
+	tapi_port_register_event(port, &dialdetector->port_listener);
+
+
+	return dialdetector;
+}
diff --git a/package/libtapi/src/events.c b/package/libtapi/src/events.c
new file mode 100644
index 0000000000..36e9b62a01
--- /dev/null
+++ b/package/libtapi/src/events.c
@@ -0,0 +1,58 @@
+#include <stdbool.h>
+#include <sys/epoll.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <stdio.h>
+
+#include "events.h"
+
+struct event_callback *event_callbacks;
+
+static int event_epoll_fd = -1;
+
+int event_register(int fd, int events, struct event_callback *cb)
+{
+	struct epoll_event ev;
+
+	if (event_epoll_fd == -1)
+		event_epoll_fd = epoll_create(1);
+
+	ev.events = events;
+	ev.data.ptr = cb;
+
+	cb->fd = fd;
+
+	return epoll_ctl(event_epoll_fd, EPOLL_CTL_ADD, fd, &ev);
+}
+
+int	event_unregister(int fd)
+{
+	return epoll_ctl(event_epoll_fd, EPOLL_CTL_DEL, fd, NULL);
+}
+
+int tapi_mainloop(void)
+{
+	struct epoll_event ev[10];
+	struct event_callback *cb;
+	int ret;
+	bool keep;
+	int i;
+
+	if (event_epoll_fd == -1)
+		event_epoll_fd = epoll_create(1);
+
+	while(true) {
+		ret = epoll_wait(event_epoll_fd, ev, 10, -1);
+		for(i = 0; i < ret; ++i) {
+			cb = ev[i].data.ptr;
+			keep = cb->callback(ev[i].events, cb->data);
+			if (!keep)
+				event_unregister(cb->fd);
+		}
+		if (ret < 0)
+			printf("epoll: %d\n", errno);
+	}
+
+	return 0;
+}
diff --git a/package/libtapi/src/events.h b/package/libtapi/src/events.h
new file mode 100644
index 0000000000..9912fac3a4
--- /dev/null
+++ b/package/libtapi/src/events.h
@@ -0,0 +1,18 @@
+#ifndef __EVENTS_H__
+#define __EVENTS_H__
+
+struct event_callback {
+	bool (*callback)(int events, void *data);
+	void *data;
+	int fd;
+};
+
+int event_register(int fd, int events,
+	struct event_callback *callback);
+
+int event_unregister(int fd);
+
+
+int tapi_mainloop(void);
+
+#endif
diff --git a/package/libtapi/src/list.h b/package/libtapi/src/list.h
new file mode 100644
index 0000000000..2959a061d3
--- /dev/null
+++ b/package/libtapi/src/list.h
@@ -0,0 +1,601 @@
+#ifndef _LINUX_LIST_H
+#define _LINUX_LIST_H
+
+#include <stddef.h>
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:	the pointer to the member.
+ * @type:	the type of the container struct this is embedded in.
+ * @member:	the name of the member within the struct.
+ *
+ */
+#ifndef container_of
+#define container_of(ptr, type, member) (			\
+	(type *)( (char *)ptr - offsetof(type,member) ))
+#endif
+
+
+/*
+ * Simple doubly linked list implementation.
+ *
+ * Some of the internal functions ("__xxx") are useful when
+ * manipulating whole lists rather than single entries, as
+ * sometimes we already know the next/prev entries and we can
+ * generate better code by using them directly rather than
+ * using the generic single-entry routines.
+ */
+
+struct list_head {
+	struct list_head *next, *prev;
+};
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+	struct list_head name = LIST_HEAD_INIT(name)
+
+static inline void INIT_LIST_HEAD(struct list_head *list)
+{
+	list->next = list;
+	list->prev = list;
+}
+
+/*
+ * Insert a new entry between two known consecutive entries.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_add(struct list_head *new,
+			      struct list_head *prev,
+			      struct list_head *next)
+{
+	next->prev = new;
+	new->next = next;
+	new->prev = prev;
+	prev->next = new;
+}
+
+/**
+ * list_add - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+static inline void list_add(struct list_head *new, struct list_head *head)
+{
+	__list_add(new, head, head->next);
+}
+
+
+/**
+ * list_add_tail - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it before
+ *
+ * Insert a new entry before the specified head.
+ * This is useful for implementing queues.
+ */
+static inline void list_add_tail(struct list_head *new, struct list_head *head)
+{
+	__list_add(new, head->prev, head);
+}
+
+
+/*
+ * Delete a list entry by making the prev/next entries
+ * point to each other.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_del(struct list_head * prev, struct list_head * next)
+{
+	next->prev = prev;
+	prev->next = next;
+}
+
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ * Note: list_empty() on entry does not return true after this, the entry is
+ * in an undefined state.
+ */
+static inline void list_del(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+	entry->next = NULL;
+	entry->prev = NULL;
+}
+
+/**
+ * list_replace - replace old entry by new one
+ * @old : the element to be replaced
+ * @new : the new element to insert
+ *
+ * If @old was empty, it will be overwritten.
+ */
+static inline void list_replace(struct list_head *old,
+				struct list_head *new)
+{
+	new->next = old->next;
+	new->next->prev = new;
+	new->prev = old->prev;
+	new->prev->next = new;
+}
+
+static inline void list_replace_init(struct list_head *old,
+					struct list_head *new)
+{
+	list_replace(old, new);
+	INIT_LIST_HEAD(old);
+}
+
+/**
+ * list_del_init - deletes entry from list and reinitialize it.
+ * @entry: the element to delete from the list.
+ */
+static inline void list_del_init(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+	INIT_LIST_HEAD(entry);
+}
+
+/**
+ * list_move - delete from one list and add as another's head
+ * @list: the entry to move
+ * @head: the head that will precede our entry
+ */
+static inline void list_move(struct list_head *list, struct list_head *head)
+{
+	__list_del(list->prev, list->next);
+	list_add(list, head);
+}
+
+/**
+ * list_move_tail - delete from one list and add as another's tail
+ * @list: the entry to move
+ * @head: the head that will follow our entry
+ */
+static inline void list_move_tail(struct list_head *list,
+				  struct list_head *head)
+{
+	__list_del(list->prev, list->next);
+	list_add_tail(list, head);
+}
+
+/**
+ * list_is_last - tests whether @list is the last entry in list @head
+ * @list: the entry to test
+ * @head: the head of the list
+ */
+static inline int list_is_last(const struct list_head *list,
+				const struct list_head *head)
+{
+	return list->next == head;
+}
+
+/**
+ * list_empty - tests whether a list is empty
+ * @head: the list to test.
+ */
+static inline int list_empty(const struct list_head *head)
+{
+	return head->next == head;
+}
+
+/**
+ * list_empty_careful - tests whether a list is empty and not being modified
+ * @head: the list to test
+ *
+ * Description:
+ * tests whether a list is empty _and_ checks that no other CPU might be
+ * in the process of modifying either member (next or prev)
+ *
+ * NOTE: using list_empty_careful() without synchronization
+ * can only be safe if the only activity that can happen
+ * to the list entry is list_del_init(). Eg. it cannot be used
+ * if another CPU could re-list_add() it.
+ */
+static inline int list_empty_careful(const struct list_head *head)
+{
+	struct list_head *next = head->next;
+	return (next == head) && (next == head->prev);
+}
+
+static inline void __list_splice(struct list_head *list,
+				 struct list_head *head)
+{
+	struct list_head *first = list->next;
+	struct list_head *last = list->prev;
+	struct list_head *at = head->next;
+
+	first->prev = head;
+	head->next = first;
+
+	last->next = at;
+	at->prev = last;
+}
+
+/**
+ * list_splice - join two lists
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ */
+static inline void list_splice(struct list_head *list, struct list_head *head)
+{
+	if (!list_empty(list))
+		__list_splice(list, head);
+}
+
+/**
+ * list_splice_init - join two lists and reinitialise the emptied list.
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ *
+ * The list at @list is reinitialised
+ */
+static inline void list_splice_init(struct list_head *list,
+				    struct list_head *head)
+{
+	if (!list_empty(list)) {
+		__list_splice(list, head);
+		INIT_LIST_HEAD(list);
+	}
+}
+
+/**
+ * list_entry - get the struct for this entry
+ * @ptr:	the &struct list_head pointer.
+ * @type:	the type of the struct this is embedded in.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_entry(ptr, type, member) \
+	container_of(ptr, type, member)
+
+/**
+ * list_first_entry - get the first element from a list
+ * @ptr:	the list head to take the element from.
+ * @type:	the type of the struct this is embedded in.
+ * @member:	the name of the list_struct within the struct.
+ *
+ * Note, that list is expected to be not empty.
+ */
+#define list_first_entry(ptr, type, member) \
+	list_entry((ptr)->next, type, member)
+
+/**
+ * list_for_each	-	iterate over a list
+ * @pos:	the &struct list_head to use as a loop cursor.
+ * @head:	the head for your list.
+ */
+#define list_for_each(pos, head) \
+	for (pos = (head)->next; pos != (head); \
+        	pos = pos->next)
+
+/**
+ * __list_for_each	-	iterate over a list
+ * @pos:	the &struct list_head to use as a loop cursor.
+ * @head:	the head for your list.
+ *
+ * This variant differs from list_for_each() in that it's the
+ * simplest possible list iteration code, no prefetching is done.
+ * Use this for code that knows the list to be very short (empty
+ * or 1 entry) most of the time.
+ */
+#define __list_for_each(pos, head) \
+	for (pos = (head)->next; pos != (head); pos = pos->next)
+
+/**
+ * list_for_each_prev	-	iterate over a list backwards
+ * @pos:	the &struct list_head to use as a loop cursor.
+ * @head:	the head for your list.
+ */
+#define list_for_each_prev(pos, head) \
+	for (pos = (head)->prev; pos != (head); \
+        	pos = pos->prev)
+
+/**
+ * list_for_each_safe - iterate over a list safe against removal of list entry
+ * @pos:	the &struct list_head to use as a loop cursor.
+ * @n:		another &struct list_head to use as temporary storage
+ * @head:	the head for your list.
+ */
+#define list_for_each_safe(pos, n, head) \
+	for (pos = (head)->next, n = pos->next; pos != (head); \
+		pos = n, n = pos->next)
+
+/**
+ * list_for_each_prev_safe - iterate over a list backwards safe against removal of list entry
+ * @pos:	the &struct list_head to use as a loop cursor.
+ * @n:		another &struct list_head to use as temporary storage
+ * @head:	the head for your list.
+ */
+#define list_for_each_prev_safe(pos, n, head) \
+	for (pos = (head)->prev, n = pos->prev; \
+	     pos != (head); \
+	     pos = n, n = pos->prev)
+
+/**
+ * list_for_each_entry	-	iterate over list of given type
+ * @pos:	the type * to use as a loop cursor.
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_for_each_entry(pos, head, member)				\
+	for (pos = list_entry((head)->next, typeof(*pos), member);	\
+	     &pos->member != (head); 	\
+	     pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_reverse - iterate backwards over list of given type.
+ * @pos:	the type * to use as a loop cursor.
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_for_each_entry_reverse(pos, head, member)			\
+	for (pos = list_entry((head)->prev, typeof(*pos), member);	\
+	     &pos->member != (head); 	\
+	     pos = list_entry(pos->member.prev, typeof(*pos), member))
+
+/**
+ * list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue()
+ * @pos:	the type * to use as a start point
+ * @head:	the head of the list
+ * @member:	the name of the list_struct within the struct.
+ *
+ * Prepares a pos entry for use as a start point in list_for_each_entry_continue().
+ */
+#define list_prepare_entry(pos, head, member) \
+	((pos) ? : list_entry(head, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_continue - continue iteration over list of given type
+ * @pos:	the type * to use as a loop cursor.
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ *
+ * Continue to iterate over list of given type, continuing after
+ * the current position.
+ */
+#define list_for_each_entry_continue(pos, head, member) 		\
+	for (pos = list_entry(pos->member.next, typeof(*pos), member);	\
+	     &pos->member != (head);	\
+	     pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_continue_reverse - iterate backwards from the given point
+ * @pos:	the type * to use as a loop cursor.
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ *
+ * Start to iterate over list of given type backwards, continuing after
+ * the current position.
+ */
+#define list_for_each_entry_continue_reverse(pos, head, member)		\
+	for (pos = list_entry(pos->member.prev, typeof(*pos), member);	\
+	     &pos->member != (head);	\
+	     pos = list_entry(pos->member.prev, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_from - iterate over list of given type from the current point
+ * @pos:	the type * to use as a loop cursor.
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ *
+ * Iterate over list of given type, continuing from current position.
+ */
+#define list_for_each_entry_from(pos, head, member) 			\
+	for (; &pos->member != (head);	\
+	     pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
+ * @pos:	the type * to use as a loop cursor.
+ * @n:		another type * to use as temporary storage
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_for_each_entry_safe(pos, n, head, member)			\
+	for (pos = list_entry((head)->next, typeof(*pos), member),	\
+		n = list_entry(pos->member.next, typeof(*pos), member);	\
+	     &pos->member != (head); 					\
+	     pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+/**
+ * list_for_each_entry_safe_continue
+ * @pos:	the type * to use as a loop cursor.
+ * @n:		another type * to use as temporary storage
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ *
+ * Iterate over list of given type, continuing after current point,
+ * safe against removal of list entry.
+ */
+#define list_for_each_entry_safe_continue(pos, n, head, member) 		\
+	for (pos = list_entry(pos->member.next, typeof(*pos), member), 		\
+		n = list_entry(pos->member.next, typeof(*pos), member);		\
+	     &pos->member != (head);						\
+	     pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+/**
+ * list_for_each_entry_safe_from
+ * @pos:	the type * to use as a loop cursor.
+ * @n:		another type * to use as temporary storage
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ *
+ * Iterate over list of given type from current point, safe against
+ * removal of list entry.
+ */
+#define list_for_each_entry_safe_from(pos, n, head, member) 			\
+	for (n = list_entry(pos->member.next, typeof(*pos), member);		\
+	     &pos->member != (head);						\
+	     pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+/**
+ * list_for_each_entry_safe_reverse
+ * @pos:	the type * to use as a loop cursor.
+ * @n:		another type * to use as temporary storage
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ *
+ * Iterate backwards over list of given type, safe against removal
+ * of list entry.
+ */
+#define list_for_each_entry_safe_reverse(pos, n, head, member)		\
+	for (pos = list_entry((head)->prev, typeof(*pos), member),	\
+		n = list_entry(pos->member.prev, typeof(*pos), member);	\
+	     &pos->member != (head); 					\
+	     pos = n, n = list_entry(n->member.prev, typeof(*n), member))
+
+/*
+ * Double linked lists with a single pointer list head.
+ * Mostly useful for hash tables where the two pointer list head is
+ * too wasteful.
+ * You lose the ability to access the tail in O(1).
+ */
+
+struct hlist_head {
+	struct hlist_node *first;
+};
+
+struct hlist_node {
+	struct hlist_node *next, **pprev;
+};
+
+#define HLIST_HEAD_INIT { .first = NULL }
+#define HLIST_HEAD(name) struct hlist_head name = {  .first = NULL }
+#define INIT_HLIST_HEAD(ptr) ((ptr)->first = NULL)
+static inline void INIT_HLIST_NODE(struct hlist_node *h)
+{
+	h->next = NULL;
+	h->pprev = NULL;
+}
+
+static inline int hlist_unhashed(const struct hlist_node *h)
+{
+	return !h->pprev;
+}
+
+static inline int hlist_empty(const struct hlist_head *h)
+{
+	return !h->first;
+}
+
+static inline void __hlist_del(struct hlist_node *n)
+{
+	struct hlist_node *next = n->next;
+	struct hlist_node **pprev = n->pprev;
+	*pprev = next;
+	if (next)
+		next->pprev = pprev;
+}
+
+static inline void hlist_del(struct hlist_node *n)
+{
+	__hlist_del(n);
+	n->next = NULL;
+	n->pprev = NULL;
+}
+
+static inline void hlist_del_init(struct hlist_node *n)
+{
+	if (!hlist_unhashed(n)) {
+		__hlist_del(n);
+		INIT_HLIST_NODE(n);
+	}
+}
+
+
+static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h)
+{
+	struct hlist_node *first = h->first;
+	n->next = first;
+	if (first)
+		first->pprev = &n->next;
+	h->first = n;
+	n->pprev = &h->first;
+}
+
+
+/* next must be != NULL */
+static inline void hlist_add_before(struct hlist_node *n,
+					struct hlist_node *next)
+{
+	n->pprev = next->pprev;
+	n->next = next;
+	next->pprev = &n->next;
+	*(n->pprev) = n;
+}
+
+static inline void hlist_add_after(struct hlist_node *n,
+					struct hlist_node *next)
+{
+	next->next = n->next;
+	n->next = next;
+	next->pprev = &n->next;
+
+	if(next->next)
+		next->next->pprev  = &next->next;
+}
+
+#define hlist_entry(ptr, type, member) container_of(ptr,type,member)
+
+#define hlist_for_each(pos, head) \
+	for (pos = (head)->first; pos; pos = pos->next)
+
+#define hlist_for_each_safe(pos, n, head) \
+	for (pos = (head)->first; pos; pos = n)
+
+/**
+ * hlist_for_each_entry	- iterate over list of given type
+ * @tpos:	the type * to use as a loop cursor.
+ * @pos:	the &struct hlist_node to use as a loop cursor.
+ * @head:	the head for your list.
+ * @member:	the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry(tpos, pos, head, member)			 \
+	for (pos = (head)->first; pos &&				 \
+		({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
+	     pos = pos->next)
+
+/**
+ * hlist_for_each_entry_continue - iterate over a hlist continuing after current point
+ * @tpos:	the type * to use as a loop cursor.
+ * @pos:	the &struct hlist_node to use as a loop cursor.
+ * @member:	the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry_continue(tpos, pos, member)		\
+	for (pos = (pos)->next; pos &&					\
+	     ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;});   \
+	     pos = pos->next)
+
+/**
+ * hlist_for_each_entry_from - iterate over a hlist continuing from current point
+ * @tpos:	the type * to use as a loop cursor.
+ * @pos:	the &struct hlist_node to use as a loop cursor.
+ * @member:	the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry_from(tpos, pos, member)			 \
+	for (; pos &&			 \
+		({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
+	     pos = pos->next)
+
+/**
+ * hlist_for_each_entry_safe - iterate over list of given type safe against removal of list entry
+ * @tpos:	the type * to use as a loop cursor.
+ * @pos:	the &struct hlist_node to use as a loop cursor.
+ * @n:		another &struct hlist_node to use as temporary storage
+ * @head:	the head for your list.
+ * @member:	the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry_safe(tpos, pos, n, head, member) 		 \
+	for (pos = (head)->first;					 \
+	     pos && ({ n = pos->next; 1; }) && 				 \
+		({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
+	     pos = n)
+
+#endif
diff --git a/package/libtapi/src/tapi-device.c b/package/libtapi/src/tapi-device.c
new file mode 100644
index 0000000000..66e4260a0b
--- /dev/null
+++ b/package/libtapi/src/tapi-device.c
@@ -0,0 +1,46 @@
+#include <stdio.h>
+
+#include "tapi-device.h"
+#include "tapi-ioctl.h"
+
+int tapi_device_open(unsigned int id, struct tapi_device *dev)
+{
+	char path[100];
+
+	snprintf(path, sizeof(path), "/dev/tapi%dC", id);
+	dev->control_fd = open(path, 0);
+	if (dev->control_fd < 0)
+		return -1;
+
+	snprintf(dev->stream_path, 100, "/dev/tapi%dS", id);
+
+	dev->id = id;
+	dev->num_ports = 2;
+
+	return 0;
+}
+
+int tapi_link_alloc(struct tapi_device *dev, unsigned int ep1, unsigned int ep2)
+{
+	return ioctl(dev->control_fd, TAPI_CONTROL_IOCTL_LINK_ALLOC, (ep1 << 16) | ep2);
+}
+
+int tapi_link_free(struct tapi_device *dev, unsigned int link)
+{
+	return ioctl(dev->control_fd, TAPI_CONTROL_IOCTL_LINK_FREE, link);
+}
+
+int tapi_link_enable(struct tapi_device *dev, unsigned int link)
+{
+	return ioctl(dev->control_fd, TAPI_CONTROL_IOCTL_LINK_ENABLE, link);
+}
+
+int tapi_link_disable(struct tapi_device *dev, unsigned int link)
+{
+	return ioctl(dev->control_fd, TAPI_CONTROL_IOCTL_LINK_DISABLE, link);
+}
+
+int tapi_sync(struct tapi_device *dev)
+{
+	return ioctl(dev->control_fd, TAPI_CONTROL_IOCTL_SYNC, 0);
+}
diff --git a/package/libtapi/src/tapi-device.h b/package/libtapi/src/tapi-device.h
new file mode 100644
index 0000000000..27658b9d83
--- /dev/null
+++ b/package/libtapi/src/tapi-device.h
@@ -0,0 +1,25 @@
+#ifndef __TAPI_DEVICE_H__
+#define __TAPI_DEVICE_H__
+
+struct tapi_device {
+	int control_fd;
+	int stream_fd;
+	struct tapi_port *ports;
+	char stream_path[100];
+
+	unsigned int id;
+
+	unsigned int num_ports;
+};
+
+struct tapi_endpoint;
+
+int tapi_device_open(unsigned int id, struct tapi_device *dev);
+
+int tapi_link_alloc(struct tapi_device *dev, unsigned int ep1, unsigned int ep2);
+int tapi_link_free(struct tapi_device *dev, unsigned int link);
+int tapi_link_enable(struct tapi_device *dev, unsigned int link);
+int tapi_link_disable(struct tapi_device *dev, unsigned int link);
+int tapi_sync(struct tapi_device *dev);
+
+#endif
diff --git a/package/libtapi/src/tapi-ioctl.h b/package/libtapi/src/tapi-ioctl.h
new file mode 100644
index 0000000000..c43fac1e73
--- /dev/null
+++ b/package/libtapi/src/tapi-ioctl.h
@@ -0,0 +1,20 @@
+
+#include <linux/ioctl.h>
+
+#define TAPI_MAGIC 't'
+#define TAPI_IOCTL(x) _IO(TAPI_MAGIC, (x))
+
+#define TAPI_CONTROL_IOCTL_LINK_ALLOC TAPI_IOCTL(0)
+#define TAPI_CONTROL_IOCTL_LINK_FREE  TAPI_IOCTL(1)
+#define TAPI_CONTROL_IOCTL_LINK_ENABLE TAPI_IOCTL(2)
+#define TAPI_CONTROL_IOCTL_LINK_DISABLE TAPI_IOCTL(3)
+
+#define TAPI_CONTROL_IOCTL_SYNC TAPI_IOCTL(4)
+
+#define TAPI_PORT_IOCTL_GET_ENDPOINT TAPI_IOCTL(5)
+#define TAPI_PORT_IOCTL_SET_RING TAPI_IOCTL(6)
+
+#define TAPI_STREAM_IOCTL_GET_ENDPOINT TAPI_IOCTL(7)
+#define TAPI_STREAM_IOCTL_CONFIGURE TAPI_IOCTL(8)
+#define TAPI_STREAM_IOCTL_START TAPI_IOCTL(9)
+#define TAPI_STREAM_IOCTL_STOP TAPI_IOCTL(10)
diff --git a/package/libtapi/src/tapi-port.c b/package/libtapi/src/tapi-port.c
new file mode 100644
index 0000000000..d06d946e12
--- /dev/null
+++ b/package/libtapi/src/tapi-port.c
@@ -0,0 +1,126 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/epoll.h>
+#include <unistd.h>
+
+#include <linux/input.h>
+
+#include "tapi-ioctl.h"
+#include "tapi-device.h"
+#include "tapi-port.h"
+
+#include "events.h"
+#include "list.h"
+
+static void tapi_port_event_dispatch(struct tapi_port *port,
+	struct tapi_event *event)
+{
+	struct tapi_port_event_listener *l;
+
+	list_for_each_entry(l, &port->event_listeners, head) {
+		l->callback(port, event, l->data);
+	}
+}
+
+static bool tapi_port_input_event(int events, void *data)
+{
+	struct tapi_port *port = data;
+	struct input_event event;
+	struct tapi_event tapi_event;
+	int ret;
+
+	ret = read(port->input_fd, &event, sizeof(event));
+	if (ret < 0) {
+		fprintf(stderr, "Port %d failed to read from input device: %d\n",
+			port->id, errno);
+		return true;
+	}
+
+	if (!event.value)
+		return true;
+
+	switch (event.code) {
+	case KEY_NUMERIC_0 ... KEY_NUMERIC_9:
+		tapi_event.type = TAPI_EVENT_TYPE_DTMF;
+		tapi_event.dtmf.code = event.code - KEY_NUMERIC_0;
+		break;
+	case KEY_NUMERIC_POUND:
+		tapi_event.type = TAPI_EVENT_TYPE_DTMF;
+		tapi_event.dtmf.code = 10;
+		break;
+	case KEY_NUMERIC_STAR:
+		tapi_event.type = TAPI_EVENT_TYPE_DTMF;
+		tapi_event.dtmf.code = 11;
+		break;
+	case KEY_ESC:
+		tapi_event.type = TAPI_EVENT_TYPE_HOOK;
+		tapi_event.hook.on = true;
+		break;
+	case KEY_ENTER:
+		tapi_event.type = TAPI_EVENT_TYPE_HOOK;
+		tapi_event.hook.on = false;
+		break;
+	default:
+		return true;
+	}
+
+	if (tapi_event.type == TAPI_EVENT_TYPE_DTMF)
+		tapi_event.dtmf.time = event.time;
+
+	tapi_port_event_dispatch(port, &tapi_event);
+
+	return true;
+}
+
+int tapi_port_open(struct tapi_device *dev, unsigned int id, struct tapi_port *port)
+{
+	int ret;
+	char path[100];
+
+	port->id = id;
+
+	snprintf(path, 100, "/dev/tapi%uP%u", dev->id, id);
+	port->fd = open(path, 0);
+	if (port->fd < 0) {
+		printf("Failed to open %s: %d\n", path, errno);
+		return errno;
+	}
+
+	snprintf(path, 100, "/dev/event%u", id);
+	port->input_fd = open(path, O_RDONLY);
+	if (port->input_fd < 0) {
+		printf("Failed to open %s: %d\n", path, errno);
+		return errno;
+	}
+
+	port->ep = ioctl(port->fd, TAPI_PORT_IOCTL_GET_ENDPOINT, 0);
+
+	INIT_LIST_HEAD(&port->event_listeners);
+
+	port->input_cb.callback = tapi_port_input_event;
+	port->input_cb.data = port;
+
+	return event_register(port->input_fd, EPOLLIN,
+		&port->input_cb);
+}
+
+int tapi_port_set_ring(struct tapi_port *port, bool ring)
+{
+	return ioctl(port->fd, TAPI_PORT_IOCTL_SET_RING, ring);
+}
+
+int tapi_port_register_event(struct tapi_port *port,
+	struct tapi_port_event_listener *cb)
+{
+	list_add_tail(&cb->head, &port->event_listeners);
+	return 0;
+}
+
+void tapi_port_unregister_event(struct tapi_port *port,
+	struct tapi_port_event_listener *cb)
+{
+	list_del(&cb->head);
+}
diff --git a/package/libtapi/src/tapi-port.h b/package/libtapi/src/tapi-port.h
new file mode 100644
index 0000000000..a290a4002d
--- /dev/null
+++ b/package/libtapi/src/tapi-port.h
@@ -0,0 +1,66 @@
+#ifndef __TAPI_PORT_H__
+#define __TAPI_PORT_H__
+
+#include <sys/time.h>
+
+#include "list.h"
+#include "events.h"
+
+struct tapi_port;
+struct tapi_device;
+
+struct tapi_dtmf_event {
+	struct timeval time;
+	unsigned char code;
+};
+
+struct tapi_hook_event {
+	bool on;
+};
+
+enum tapi_event_type {
+	TAPI_EVENT_TYPE_DTMF,
+	TAPI_EVENT_TYPE_HOOK,
+};
+
+struct tapi_event {
+	enum tapi_event_type type;
+	union {
+		struct tapi_dtmf_event dtmf;
+		struct tapi_hook_event hook;
+	};
+};
+
+struct tapi_port_event_listener {
+	void (*callback)(struct tapi_port *, struct tapi_event *event, void *data);
+	void *data;
+
+	struct list_head head;
+};
+
+struct tapi_port {
+	int id;
+	int fd;
+	int input_fd;
+	unsigned int ep;
+
+	struct event_callback input_cb;
+
+	struct list_head event_listeners;
+};
+
+int tapi_port_open(struct tapi_device *dev, unsigned int id, struct tapi_port
+*port);
+int tapi_port_set_ring(struct tapi_port *port, bool ring);
+int tapi_port_register_event(struct tapi_port *port,
+	struct tapi_port_event_listener *cb);
+
+void tapi_port_unregister_event(struct tapi_port *port,
+	struct tapi_port_event_listener *cb);
+
+static inline int tapi_port_get_endpoint(struct tapi_port *port)
+{
+	return port->ep;
+}
+
+#endif
diff --git a/package/libtapi/src/tapi-session.c b/package/libtapi/src/tapi-session.c
new file mode 100644
index 0000000000..8b17053115
--- /dev/null
+++ b/package/libtapi/src/tapi-session.c
@@ -0,0 +1,122 @@
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "tapi-device.h"
+#include "tapi-port.h"
+#include "tapi-session.h"
+
+enum tapi_session_port_state {
+	TAPI_SESSION_PORT_STATE_IDLE,
+	TAPI_SESSION_PORT_STATE_RINGING,
+	TAPI_SESSION_PORT_STATE_ACTIVE,
+};
+
+struct tapi_session_port {
+	struct tapi_port *port;
+	struct tapi_port_event_listener event_listener;
+
+	enum tapi_session_port_state state;
+};
+
+struct tapi_session {
+	struct tapi_device *dev;
+	struct tapi_session_port caller;
+	struct tapi_session_port callee;
+
+	bool active;
+	unsigned int link;
+
+	void (*release)(struct tapi_session *session, void *data);
+};
+
+static void tapi_session_terminate(struct tapi_session *session)
+{
+	if (session->active) {
+		tapi_link_enable(session->dev, session->link);
+		tapi_sync(session->dev);
+		tapi_link_free(session->dev, session->link);
+	}
+
+	switch (session->callee.state) {
+	case TAPI_SESSION_PORT_STATE_RINGING:
+		tapi_port_set_ring(session->callee.port, false);
+		break;
+	default:
+		break;
+	}
+
+	session->active = false;
+}
+
+static void tapi_session_caller_event(struct tapi_port *port,
+	struct tapi_event *event, void *data)
+{
+	struct tapi_session *session = data;
+
+	if (event->type != TAPI_EVENT_TYPE_HOOK)
+		return;
+
+	if (event->hook.on) {
+		tapi_session_terminate(session);
+	}
+}
+
+static void tapi_session_callee_event(struct tapi_port *port,
+	struct tapi_event *event, void *data)
+{
+	struct tapi_session *session = data;
+
+	if (event->type != TAPI_EVENT_TYPE_HOOK)
+		return;
+
+	if (event->hook.on) {
+		if (session->callee.state == TAPI_SESSION_PORT_STATE_ACTIVE) {
+			tapi_session_terminate(session);
+		}
+	} else  {
+		if (session->callee.state == TAPI_SESSION_PORT_STATE_RINGING) {
+			tapi_port_set_ring(session->callee.port, false);
+			session->link = tapi_link_alloc(session->dev,
+				session->caller.port->ep, session->callee.port->ep);
+			session->callee.state = TAPI_SESSION_PORT_STATE_ACTIVE;
+			tapi_link_enable(session->dev, session->link);
+			tapi_sync(session->dev);
+			session->active = true;
+		}
+	}
+}
+
+struct tapi_session *tapi_session_alloc(struct tapi_device *dev,
+	struct tapi_port *caller, struct tapi_port *callee,
+	void (*release)(struct tapi_session *session, void *data), void *release_data)
+{
+	struct tapi_session *session;
+	struct tapi_session_port *session_port;
+
+	session = malloc(sizeof(*session));
+
+	session->dev = dev;
+
+	session->callee.port = callee;
+	session->callee.state = TAPI_SESSION_PORT_STATE_RINGING;
+	session->callee.event_listener.callback = tapi_session_callee_event;
+	session->callee.event_listener.data = session;
+	tapi_port_register_event(callee, &session->callee.event_listener);
+
+	session->caller.port = caller;
+	session->caller.state = TAPI_SESSION_PORT_STATE_ACTIVE;
+	session->caller.event_listener.callback = tapi_session_caller_event;
+	session->caller.event_listener.data = session;
+	tapi_port_register_event(caller, &session->caller.event_listener);
+
+	tapi_port_set_ring(callee, true);
+}
+
+void tapi_session_free(struct tapi_session *session)
+{
+	tapi_session_terminate(session);
+	tapi_port_register_event(session->callee.port, &session->callee.event_listener);
+	tapi_port_register_event(session->caller.port, &session->caller.event_listener);
+	free(session);
+}
diff --git a/package/libtapi/src/tapi-session.h b/package/libtapi/src/tapi-session.h
new file mode 100644
index 0000000000..15d94735eb
--- /dev/null
+++ b/package/libtapi/src/tapi-session.h
@@ -0,0 +1,14 @@
+#ifndef __TAPI_SESSION_H__
+#define __TAPI_SESSION_H__
+
+struct tapi_device;
+struct tapi_port;
+struct tapi_session;
+
+struct tapi_session *tapi_session_alloc(struct tapi_device *dev,
+	struct tapi_port *caller, struct tapi_port *callee,
+	void (*release)(struct tapi_session *session, void *data), void	*release_data);
+
+void tapi_session_free(struct tapi_session *session);
+
+#endif
diff --git a/package/libtapi/src/tapi-stream.c b/package/libtapi/src/tapi-stream.c
new file mode 100644
index 0000000000..5ae44a1631
--- /dev/null
+++ b/package/libtapi/src/tapi-stream.c
@@ -0,0 +1,42 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "tapi-device.h"
+#include "tapi-stream.h"
+#include "tapi-ioctl.h"
+
+struct tapi_stream *tapi_stream_alloc(struct tapi_device *dev)
+{
+	struct tapi_stream *stream;
+
+	stream = malloc(sizeof(*stream));
+	if (!stream)
+		return NULL;
+
+	stream->fd = open(dev->stream_path, O_RDWR);
+
+	if (stream->fd < 0) {
+		free(stream);
+		return NULL;
+	}
+
+	stream->ep = ioctl(stream->fd, TAPI_STREAM_IOCTL_GET_ENDPOINT, 0);
+
+	if (stream->ep < 0) {
+		close(stream->fd);
+		free(stream);
+		return NULL;
+	}
+
+	return stream;
+}
+
+void tapi_stream_free(struct tapi_stream *stream)
+{
+	close(stream->fd);
+	free(stream);
+}
diff --git a/package/libtapi/src/tapi-stream.h b/package/libtapi/src/tapi-stream.h
new file mode 100644
index 0000000000..0e3e04af24
--- /dev/null
+++ b/package/libtapi/src/tapi-stream.h
@@ -0,0 +1,19 @@
+#ifndef __TAPI_STREAM_H__
+#define __TAPI_STREAM_H__
+
+struct tapi_device;
+
+struct tapi_stream {
+	int fd;
+	int ep;
+};
+
+struct tapi_stream *tapi_stream_alloc(struct tapi_device *);
+void tapi_stream_free(struct tapi_stream *);
+
+static inline int tapi_stream_get_endpoint(struct tapi_stream *stream)
+{
+	return stream->ep;
+}
+
+#endif
diff --git a/package/libtapi/src/tapidemo.c b/package/libtapi/src/tapidemo.c
new file mode 100644
index 0000000000..63098b89cf
--- /dev/null
+++ b/package/libtapi/src/tapidemo.c
@@ -0,0 +1,56 @@
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <poll.h>
+
+#include <linux/input.h>
+/*#include <sys/timerfd.h>*/
+#include "timerfd.h"
+#include "dialdetector.h"
+
+#include "tapi-ioctl.h"
+
+#include "tapi-device.h"
+#include "tapi-port.h"
+
+static struct tapi_device dev;
+static struct tapi_port ports[2];
+
+void dial_callback(struct tapi_port *port, size_t num_digits, const unsigned char *digits)
+{
+	unsigned int link;
+
+	if (num_digits != 1)
+		return;
+	if (port->id == digits[0] || digits[0] > 1)
+		return;
+
+	tapi_port_set_ring(&ports[digits[0]], true);
+
+	tapi_session_alloc(&dev, port, &ports[digits[0]]);
+}
+
+int main(int argc, char *argv[])
+{
+	struct dialdetector *dd, *dd2;
+	unsigned int link;
+	unsigned char buf[1024];
+	int ret;
+
+	tapi_device_open(0, &dev);
+	tapi_port_open(0, 0, &ports[0]);
+	tapi_port_open(0, 1, &ports[1]);
+
+	dd = dialdetector_alloc(&ports[0]);
+	dd->dial_callback = dial_callback;
+	dd2 = dialdetector_alloc(&ports[1]);
+	dd2->dial_callback = dial_callback;
+
+	tapi_mainloop();
+
+	return 0;
+}
diff --git a/package/libtapi/src/timer_fd.c b/package/libtapi/src/timer_fd.c
new file mode 100644
index 0000000000..fbc951a9fc
--- /dev/null
+++ b/package/libtapi/src/timer_fd.c
@@ -0,0 +1,33 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * timerfd_create() / timerfd_settime() / timerfd_gettime() for uClibc
+ *
+ * Copyright (C) 2009 Stephan Raue <stephan@openelec.tv>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+/*#include <sys/timerfd.h>*/
+#include "timerfd.h"
+
+/*
+ * timerfd_create()
+ */
+#ifdef __NR_timerfd_create
+int timerfd_create(int clockid, int flags)
+{
+	return syscall(__NR_timerfd_create, clockid, flags);
+}
+#endif
+
+/*
+ * timerfd_settime()
+ */
+#ifdef __NR_timerfd_settime
+int timerfd_settime(int ufd, int flags, const struct itimerspec *umtr, struct itimerspec *otmr)
+{
+	return syscall(__NR_timerfd_settime, ufd, flags, umtr, otmr);
+}
+#endif
+
diff --git a/package/libtapi/src/timerfd.h b/package/libtapi/src/timerfd.h
new file mode 100644
index 0000000000..f17bc798a6
--- /dev/null
+++ b/package/libtapi/src/timerfd.h
@@ -0,0 +1,61 @@
+/* Copyright (C) 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef	_SYS_TIMERFD_H
+#define	_SYS_TIMERFD_H	1
+
+#include <time.h>
+
+
+/* Bits to be set in the FLAGS parameter of `timerfd_create'.  */
+enum
+  {
+    TFD_CLOEXEC = 02000000,
+#define TFD_CLOEXEC TFD_CLOEXEC
+    TFD_NONBLOCK = 04000
+#define TFD_NONBLOCK TFD_NONBLOCK
+  };
+
+
+/* Bits to be set in the FLAGS parameter of `timerfd_settime'.  */
+enum
+  {
+    TFD_TIMER_ABSTIME = 1 << 0
+#define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME
+  };
+
+
+__BEGIN_DECLS
+
+/* Return file descriptor for new interval timer source.  */
+extern int timerfd_create (clockid_t __clock_id, int __flags) __THROW;
+
+/* Set next expiration time of interval timer source UFD to UTMR.  If
+   FLAGS has the TFD_TIMER_ABSTIME flag set the timeout value is
+   absolute.  Optionally return the old expiration time in OTMR.  */
+extern int timerfd_settime (int __ufd, int __flags,
+			    __const struct itimerspec *__utmr,
+			    struct itimerspec *__otmr) __THROW;
+
+/* Return the next expiration time of UFD.  */
+extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW;
+
+__END_DECLS
+
+#endif /* sys/timerfd.h */
+