zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/usb/serial/navman.c b/ap/os/linux/linux-3.4.x/drivers/usb/serial/navman.c
new file mode 100644
index 0000000..29ab6eb
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/usb/serial/navman.c
@@ -0,0 +1,140 @@
+/*
+ * Navman Serial USB driver
+ *
+ * Copyright (C) 2006 Greg Kroah-Hartman <gregkh@suse.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * TODO:
+ * Add termios method that uses copy_hw but also kills all echo
+ * flags as the navman is rx only so cannot echo.
+ */
+
+#include <linux/gfp.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+static bool debug;
+
+static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */
+ { USB_DEVICE(0x0df7, 0x0900) }, /* Mobile Action i-gotU */
+ { },
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver navman_driver = {
+ .name = "navman",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .id_table = id_table,
+};
+
+static void navman_read_int_callback(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+ unsigned char *data = urb->transfer_buffer;
+ struct tty_struct *tty;
+ int status = urb->status;
+ int result;
+
+ switch (status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d",
+ __func__, status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d",
+ __func__, status);
+ goto exit;
+ }
+
+ usb_serial_debug_data(debug, &port->dev, __func__,
+ urb->actual_length, data);
+
+ tty = tty_port_tty_get(&port->port);
+ if (tty && urb->actual_length) {
+ tty_insert_flip_string(tty, data, urb->actual_length);
+ tty_flip_buffer_push(tty);
+ }
+ tty_kref_put(tty);
+
+exit:
+ result = usb_submit_urb(urb, GFP_ATOMIC);
+ if (result)
+ dev_err(&urb->dev->dev,
+ "%s - Error %d submitting interrupt urb\n",
+ __func__, result);
+}
+
+static int navman_open(struct tty_struct *tty, struct usb_serial_port *port)
+{
+ int result = 0;
+
+ dbg("%s - port %d", __func__, port->number);
+
+ if (port->interrupt_in_urb) {
+ dbg("%s - adding interrupt input for treo", __func__);
+ result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
+ if (result)
+ dev_err(&port->dev,
+ "%s - failed submitting interrupt urb, error %d\n",
+ __func__, result);
+ }
+ return result;
+}
+
+static void navman_close(struct usb_serial_port *port)
+{
+ dbg("%s - port %d", __func__, port->number);
+
+ usb_kill_urb(port->interrupt_in_urb);
+}
+
+static int navman_write(struct tty_struct *tty, struct usb_serial_port *port,
+ const unsigned char *buf, int count)
+{
+ dbg("%s - port %d", __func__, port->number);
+
+ /*
+ * This device can't write any data, only read from the device
+ */
+ return -EOPNOTSUPP;
+}
+
+static struct usb_serial_driver navman_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "navman",
+ },
+ .id_table = id_table,
+ .num_ports = 1,
+ .open = navman_open,
+ .close = navman_close,
+ .write = navman_write,
+ .read_int_callback = navman_read_int_callback,
+};
+
+static struct usb_serial_driver * const serial_drivers[] = {
+ &navman_device, NULL
+};
+
+module_usb_serial_driver(navman_driver, serial_drivers);
+
+MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");