1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/dahdi/xpp/mmapbus.c b/drivers/dahdi/xpp/mmapbus.c
new file mode 100644
index 0000000..30ca8c5
--- /dev/null
+++ b/drivers/dahdi/xpp/mmapbus.c
@@ -0,0 +1,91 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include "mmapbus.h"
+
+static int mmap_match(struct device *dev, struct device_driver *driver)
+{
+	return !strncmp(dev->bus_id, driver->name, strlen(driver->name));
+}
+static int mmap_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
+{
+	envp[0] = buffer;
+	envp[1] = NULL;
+	return 0;
+}
+
+static void mmap_bus_release(struct device *dev)
+{
+}
+
+static void mmap_dev_release(struct device *dev)
+{
+}
+
+static struct bus_type mmap_bus_type = {
+	.name = "mmap",
+	.match = mmap_match,
+	.uevent = mmap_uevent,
+};
+
+static struct device mmap_bus = {
+	.bus_id = "mmap0",
+	.release = mmap_bus_release,
+};
+
+
+
+int register_mmap_device(struct mmap_device *dev)
+{
+	dev->dev.bus = &mmap_bus_type;
+	dev->dev.parent = &mmap_bus;
+	dev->dev.release = mmap_dev_release;
+	strncpy(dev->dev.bus_id, dev->name, BUS_ID_SIZE);
+	return device_register(&dev->dev);
+}
+
+void unregister_mmap_device(struct mmap_device *dev)
+{
+	device_unregister(&dev->dev);
+}
+EXPORT_SYMBOL(register_mmap_device);
+EXPORT_SYMBOL(unregister_mmap_device);
+
+int register_mmap_driver(struct mmap_driver *driver)
+{
+	driver->driver.bus = &mmap_bus_type;
+	return driver_register(&driver->driver);
+}
+
+void unregister_mmap_driver(struct mmap_driver *driver)
+{
+	driver_unregister(&driver->driver);
+}
+EXPORT_SYMBOL(register_mmap_driver);
+EXPORT_SYMBOL(unregister_mmap_driver);
+
+int register_mmap_bus(void)
+{
+	int ret = 0;
+	if ((ret = bus_register(&mmap_bus_type)) < 0)
+		goto bus_type_reg;
+	if ((ret = device_register(&mmap_bus)) < 0)
+		goto bus_reg;
+	return ret;
+
+bus_reg:
+	bus_unregister(&mmap_bus_type);
+bus_type_reg:
+	return ret;
+}
+
+void unregister_mmap_bus(void)
+{
+	device_unregister(&mmap_bus);
+	bus_unregister(&mmap_bus_type);
+}
+EXPORT_SYMBOL(register_mmap_bus);
+EXPORT_SYMBOL(unregister_mmap_bus);
+
+MODULE_AUTHOR("Alexander Landau <landau.alex@gmail.com>");
+MODULE_LICENSE("GPL");