[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

package/lqtapi/src/tapi/tapi-core.c

@@ -0,0 +1,250 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/list.h>
+
+#include <linux/cdev.h>
+#include <linux/err.h>
+
+#include <linux/tapi/tapi.h>
+
+
+void tapi_alloc_input(struct tapi_device *tdev, struct tapi_port *port);
+int tapi_register_port_device(struct tapi_device* tdev, struct tapi_port *port);
+int tapi_register_stream_device(struct tapi_device* tdev);
+int tapi_register_control_device(struct tapi_device* tdev);
+
+static struct class *tapi_class;
+static int tapi_major;
+
+#define TAPI_MAX_MINORS 255
+
+static bool tapi_minors[TAPI_MAX_MINORS];
+
+static int tapi_get_free_minor(void)
+{
+	int i;
+	for (i = 0; i < TAPI_MAX_MINORS; ++i) {
+		if (!tapi_minors[i]) {
+			tapi_minors[i] = true;
+			return i;
+		}
+	}
+
+	return -1;
+}
+
+/*
+int tapi_port_send_dtmf_events(struct tapi_device *tdev, unsigned int port, struct tapi_dtmf *, size_t num_events, unsigned int dealy)
+{
+}
+EXPORT_SYMBOL_GPL(tapi_port_send_dtmf_events);
+*/
+
+void tapi_report_hook_event(struct tapi_device *tdev, struct tapi_port *port,
+	bool on)
+{
+	struct tapi_event event;
+	event.type = TAPI_EVENT_TYPE_HOOK;
+	event.port = port->id;
+	event.hook.on = on;
+
+	tapi_report_event(tdev, &event);
+}
+EXPORT_SYMBOL_GPL(tapi_report_hook_event);
+
+void tapi_report_dtmf_event(struct tapi_device *tdev, struct tapi_port *port,
+	unsigned char code)
+{
+	struct tapi_event event;
+	event.type = TAPI_EVENT_TYPE_DTMF;
+	event.port = port->id;
+	event.dtmf.code = code;
+
+	tapi_report_event(tdev, &event);
+}
+EXPORT_SYMBOL_GPL(tapi_report_dtmf_event);
+
+struct tapi_stream *tapi_stream_alloc(struct tapi_device *tdev)
+{
+	struct tapi_stream *stream;
+	printk("tdev %p\n", tdev);
+
+	if (!tdev->ops || !tdev->ops->stream_alloc)
+		return ERR_PTR(-ENOSYS);
+
+	stream = tdev->ops->stream_alloc(tdev);
+	printk("stream %p\n", stream);
+	if (IS_ERR(stream))
+		return stream;
+
+	stream->id = atomic_inc_return(&tdev->stream_id) - 1;
+	stream->ep.id = stream->id;
+
+/*	mutex_lock(&tdev->lock);*/
+	list_add_tail(&stream->head, &tdev->streams);
+/*	mutex_unlock(&tdev->lock);*/
+
+	return stream;
+}
+EXPORT_SYMBOL_GPL(tapi_stream_alloc);
+
+void tapi_stream_free(struct tapi_device *tdev, struct tapi_stream *stream)
+{
+	mutex_lock(&tdev->lock);
+	list_del(&stream->head);
+	mutex_unlock(&tdev->lock);
+
+	tdev->ops->stream_free(tdev, stream);
+}
+EXPORT_SYMBOL_GPL(tapi_stream_free);
+
+struct tapi_link *tapi_link_alloc(struct tapi_device *tdev,
+	struct tapi_endpoint *ep1, struct tapi_endpoint *ep2)
+{
+	struct tapi_link *link;
+
+	if (!tdev->ops || !tdev->ops->link_alloc)
+		return ERR_PTR(-ENOSYS);
+
+	link = tdev->ops->link_alloc(tdev, ep1, ep2);
+	if (IS_ERR(link))
+		return link;
+
+	link->id = atomic_inc_return(&tdev->link_id) - 1;
+
+/*
+	mutex_lock(&tdev->lock);
+	list_add_tail(&link->head, &tdev->links);
+	mutex_unlock(&tdev->lock);
+*/
+	return link;
+}
+EXPORT_SYMBOL_GPL(tapi_link_alloc);
+
+void tapi_link_free(struct tapi_device *tdev, struct tapi_link *link)
+{
+/*
+	mutex_lock(&tdev->lock);
+	list_del(&link->head);
+	mutex_unlock(&tdev->lock);
+*/
+	tdev->ops->link_free(tdev, link);
+}
+EXPORT_SYMBOL_GPL(tapi_link_free);
+
+int tapi_char_device_register(struct tapi_device *tdev,
+	struct tapi_char_device *tchrdev, const struct file_operations *fops)
+{
+	int ret;
+	struct device *dev = &tchrdev->dev;
+	dev_t devt;
+	int minor = tapi_get_free_minor();
+
+	devt = MKDEV(tapi_major, minor);
+
+	dev->devt = devt;
+	dev->class = tapi_class;
+	dev->parent = &tdev->dev;
+
+	tchrdev->tdev = tdev;
+
+	cdev_init(&tchrdev->cdev, fops);
+	tchrdev->cdev.owner = THIS_MODULE;
+	ret = cdev_add(&tchrdev->cdev, devt, 1);
+	if (ret)
+		return ret;
+
+	ret = device_register(&tchrdev->dev);
+	if (ret)
+		goto err_cdev_del;
+
+	return 0;
+
+err_cdev_del:
+	cdev_del(&tchrdev->cdev);
+
+	return ret;
+}
+
+int tapi_device_register(struct tapi_device *tdev, const char *name,
+	struct device *parent)
+{
+	static atomic_t tapi_device_id = ATOMIC_INIT(0);
+	int ret, i;
+
+	tdev->dev.class = tapi_class;
+	tdev->dev.parent = parent;
+	dev_set_name(&tdev->dev, "%s", name);
+
+	ret = device_register(&tdev->dev);
+	if (ret)
+		return ret;
+
+	tdev->id = atomic_inc_return(&tapi_device_id) - 1;
+
+	mutex_init(&tdev->lock);
+	INIT_LIST_HEAD(&tdev->streams);
+	INIT_LIST_HEAD(&tdev->links);
+	atomic_set(&tdev->link_id, 0);
+	atomic_set(&tdev->stream_id, tdev->num_ports);
+
+	tapi_register_stream_device(tdev);
+	tapi_register_control_device(tdev);
+
+	for (i = 0; i < tdev->num_ports; ++i) {
+		tapi_port_alloc(tdev, i);
+		tapi_alloc_input(tdev, &tdev->ports[i]);
+		tapi_register_port_device(tdev, &tdev->ports[i]);
+		tdev->ports[i].id = i;
+		tdev->ports[i].ep.id = i;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(tapi_device_register);
+
+void tapi_device_unregister(struct tapi_device *tdev)
+{
+	device_unregister(&tdev->dev);
+}
+EXPORT_SYMBOL_GPL(tapi_device_unregister);
+
+static int __init tapi_class_init(void)
+{
+	int ret;
+	dev_t dev;
+
+	tapi_class = class_create(THIS_MODULE, "tapi");
+
+	if (IS_ERR(tapi_class)) {
+		ret = PTR_ERR(tapi_class);
+		printk(KERN_ERR "tapi: Failed to create device class: %d\n", ret);
+		goto err;
+	}
+
+	ret = alloc_chrdev_region(&dev, 0, TAPI_MAX_MINORS, "tapi");
+	if (ret) {
+		printk(KERN_ERR "tapi: Failed to allocate chrdev region: %d\n", ret);
+		goto err_class_destory;
+	}
+	tapi_major = MAJOR(dev);
+
+	return 0;
+err_class_destory:
+	class_destroy(tapi_class);
+err:
+	return ret;
+}
+subsys_initcall(tapi_class_init);
+
+static void __exit tapi_class_exit(void)
+{
+	unregister_chrdev_region(MKDEV(tapi_major, 0), TAPI_MAX_MINORS);
+	class_destroy(tapi_class);
+}
+module_exit(tapi_class_exit);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("TAPI class");
+MODULE_LICENSE("GPL");