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path: root/drivers/usb/serial/navman.c
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Diffstat (limited to 'drivers/usb/serial/navman.c')
-rw-r--r--drivers/usb/serial/navman.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c
new file mode 100644
index 00000000000..7f544081032
--- /dev/null
+++ b/drivers/usb/serial/navman.c
@@ -0,0 +1,157 @@
+/*
+ * 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.
+ */
+
+#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 "usb-serial.h"
+
+static int debug;
+
+static struct usb_device_id id_table [] = {
+ { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */
+ { },
+};
+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,
+ .no_dynamic_id = 1,
+};
+
+static void navman_read_int_callback(struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_serial_port *port = urb->context;
+ unsigned char *data = urb->transfer_buffer;
+ struct tty_struct *tty;
+ int result;
+
+ switch (urb->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",
+ __FUNCTION__, urb->status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d",
+ __FUNCTION__, urb->status);
+ goto exit;
+ }
+
+ usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
+ urb->actual_length, data);
+
+ tty = port->tty;
+ if (tty && urb->actual_length) {
+ tty_buffer_request_room(tty, urb->actual_length);
+ tty_insert_flip_string(tty, data, urb->actual_length);
+ tty_flip_buffer_push(tty);
+ }
+
+exit:
+ result = usb_submit_urb(urb, GFP_ATOMIC);
+ if (result)
+ dev_err(&urb->dev->dev,
+ "%s - Error %d submitting interrupt urb\n",
+ __FUNCTION__, result);
+}
+
+static int navman_open(struct usb_serial_port *port, struct file *filp)
+{
+ int result = 0;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (port->interrupt_in_urb) {
+ dbg("%s - adding interrupt input for treo", __FUNCTION__);
+ result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
+ if (result)
+ dev_err(&port->dev,
+ "%s - failed submitting interrupt urb, error %d\n",
+ __FUNCTION__, result);
+ }
+ return result;
+}
+
+static void navman_close(struct usb_serial_port *port, struct file *filp)
+{
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (port->interrupt_in_urb)
+ usb_kill_urb(port->interrupt_in_urb);
+}
+
+static int navman_write(struct usb_serial_port *port,
+ const unsigned char *buf, int count)
+{
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ /*
+ * This device can't write any data, only read from the device
+ * so we just silently eat all data sent to us and say it was
+ * successfully sent.
+ * Evil, I know, but do you have a better idea?
+ */
+
+ return count;
+}
+
+static struct usb_serial_driver navman_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "navman",
+ },
+ .id_table = id_table,
+ .num_interrupt_in = NUM_DONT_CARE,
+ .num_bulk_in = NUM_DONT_CARE,
+ .num_bulk_out = NUM_DONT_CARE,
+ .num_ports = 1,
+ .open = navman_open,
+ .close = navman_close,
+ .write = navman_write,
+ .read_int_callback = navman_read_int_callback,
+};
+
+static int __init navman_init(void)
+{
+ int retval;
+
+ retval = usb_serial_register(&navman_device);
+ if (retval)
+ return retval;
+ retval = usb_register(&navman_driver);
+ if (retval)
+ usb_serial_deregister(&navman_device);
+ return retval;
+}
+
+static void __exit navman_exit(void)
+{
+ usb_deregister(&navman_driver);
+ usb_serial_deregister(&navman_device);
+}
+
+module_init(navman_init);
+module_exit(navman_exit);
+MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");