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/*
* 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 <linux/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 = {
.name = "anydata",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
.id_table = id_table,
.no_dynamic_id = 1,
};
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_read_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");
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