[PATCH] USB: add the anydata usb-serial driver

[pandora-kernel.git] / drivers / usb / serial / anydata.c

diff --git a/drivers/usb/serial/anydata.c b/drivers/usb/serial/anydata.c
new file mode 100644 (file)
index 0000000..18022a7
--- /dev/null
+++ b/drivers/usb/serial/anydata.c
@@ -0,0 +1,123 @@
+/*
+ * AnyData CDMA Serial USB driver
+ *
+ * Copyright (C) 2005 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/module.h>
+#include <linux/usb.h>
+#include "usb-serial.h"
+
+static struct usb_device_id id_table [] = {
+       { USB_DEVICE(0x16d5, 0x6501) }, /* AirData CDMA device */
+       { },
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+/* if overridden by the user, then use their value for the size of the
+ * read and write urbs */
+static int buffer_size;
+static int debug;
+
+static struct usb_driver anydata_driver = {
+       .owner =        THIS_MODULE,
+       .name =         "anydata",
+       .probe =        usb_serial_probe,
+       .disconnect =   usb_serial_disconnect,
+       .id_table =     id_table,
+};
+
+static int anydata_open(struct usb_serial_port *port, struct file *filp)
+{
+       char *buffer;
+       int result = 0;
+
+       dbg("%s - port %d", __FUNCTION__, port->number);
+
+       if (buffer_size) {
+               /* override the default buffer sizes */
+               buffer = kmalloc(buffer_size, GFP_KERNEL);
+               if (!buffer) {
+                       dev_err(&port->dev, "%s - out of memory.\n",
+                               __FUNCTION__);
+                       return -ENOMEM;
+               }
+               kfree (port->read_urb->transfer_buffer);
+               port->read_urb->transfer_buffer = buffer;
+               port->read_urb->transfer_buffer_length = buffer_size;
+
+               buffer = kmalloc(buffer_size, GFP_KERNEL);
+               if (!buffer) {
+                       dev_err(&port->dev, "%s - out of memory.\n",
+                               __FUNCTION__);
+                       return -ENOMEM;
+               }
+               kfree (port->write_urb->transfer_buffer);
+               port->write_urb->transfer_buffer = buffer;
+               port->write_urb->transfer_buffer_length = buffer_size;
+               port->bulk_out_size = buffer_size;
+       }
+
+       /* Start reading from the device */
+       usb_fill_bulk_urb(port->read_urb, port->serial->dev,
+                         usb_rcvbulkpipe(port->serial->dev,
+                                         port->bulk_in_endpointAddress),
+                         port->read_urb->transfer_buffer,
+                         port->read_urb->transfer_buffer_length,
+                         usb_serial_generic_write_bulk_callback, port);
+       result = usb_submit_urb(port->read_urb, GFP_KERNEL);
+       if (result)
+               dev_err(&port->dev,
+                       "%s - failed submitting read urb, error %d\n",
+                       __FUNCTION__, result);
+
+       return result;
+}
+
+static struct usb_serial_driver anydata_device = {
+       .driver = {
+               .owner =        THIS_MODULE,
+               .name =         "anydata",
+       },
+       .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 =                 anydata_open,
+};
+
+static int __init anydata_init(void)
+{
+       int retval;
+
+       retval = usb_serial_register(&anydata_device);
+       if (retval)
+               return retval;
+       retval = usb_register(&anydata_driver);
+       if (retval)
+               usb_serial_deregister(&anydata_device);
+       return retval;
+}
+
+static void __exit anydata_exit(void)
+{
+       usb_deregister(&anydata_driver);
+       usb_serial_deregister(&anydata_device);
+}
+
+module_init(anydata_init);
+module_exit(anydata_exit);
+MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+module_param(buffer_size, int, 0);
+MODULE_PARM_DESC(buffer_size, "Size of the transfer buffers");