Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / usb / serial / navman.c

diff --git a/kernel/drivers/usb/serial/navman.c b/kernel/drivers/usb/serial/navman.c
new file mode 100644 (file)
index 0000000..2a97cdc
--- /dev/null
+++ b/kernel/drivers/usb/serial/navman.c
@@ -0,0 +1,118 @@
+/*
+ * 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/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+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 void navman_read_int_callback(struct urb *urb)
+{
+       struct usb_serial_port *port = urb->context;
+       unsigned char *data = urb->transfer_buffer;
+       int status = urb->status;
+       int result;
+
+       switch (status) {
+       case 0:
+               /* success */
+               break;
+       case -ECONNRESET:
+       case -ENOENT:
+       case -ESHUTDOWN:
+               /* this urb is terminated, clean up */
+               dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
+                       __func__, status);
+               return;
+       default:
+               dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
+                       __func__, status);
+               goto exit;
+       }
+
+       usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
+
+       if (urb->actual_length) {
+               tty_insert_flip_string(&port->port, data, urb->actual_length);
+               tty_flip_buffer_push(&port->port);
+       }
+
+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;
+
+       if (port->interrupt_in_urb) {
+               dev_dbg(&port->dev, "%s - adding interrupt input for treo\n",
+                       __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)
+{
+       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)
+{
+       /*
+        * 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(serial_drivers, id_table);
+
+MODULE_LICENSE("GPL");