124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
/*
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* AnyData CDMA Serial USB driver
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*
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* Copyright (C) 2005 Greg Kroah-Hartman <gregkh@suse.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/tty.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include "usb-serial.h"
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static struct usb_device_id id_table [] = {
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{ USB_DEVICE(0x16d5, 0x6501) }, /* AirData CDMA device */
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{ },
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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/* if overridden by the user, then use their value for the size of the
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* read and write urbs */
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static int buffer_size;
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static int debug;
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static struct usb_driver anydata_driver = {
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.name = "anydata",
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.probe = usb_serial_probe,
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.disconnect = usb_serial_disconnect,
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.id_table = id_table,
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.no_dynamic_id = 1,
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};
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static int anydata_open(struct usb_serial_port *port, struct file *filp)
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{
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char *buffer;
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int result = 0;
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dbg("%s - port %d", __FUNCTION__, port->number);
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if (buffer_size) {
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/* override the default buffer sizes */
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buffer = kmalloc(buffer_size, GFP_KERNEL);
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if (!buffer) {
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dev_err(&port->dev, "%s - out of memory.\n",
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__FUNCTION__);
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return -ENOMEM;
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}
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kfree (port->read_urb->transfer_buffer);
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port->read_urb->transfer_buffer = buffer;
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port->read_urb->transfer_buffer_length = buffer_size;
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buffer = kmalloc(buffer_size, GFP_KERNEL);
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if (!buffer) {
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dev_err(&port->dev, "%s - out of memory.\n",
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__FUNCTION__);
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return -ENOMEM;
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}
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kfree (port->write_urb->transfer_buffer);
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port->write_urb->transfer_buffer = buffer;
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port->write_urb->transfer_buffer_length = buffer_size;
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port->bulk_out_size = buffer_size;
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}
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/* Start reading from the device */
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usb_fill_bulk_urb(port->read_urb, port->serial->dev,
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usb_rcvbulkpipe(port->serial->dev,
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port->bulk_in_endpointAddress),
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port->read_urb->transfer_buffer,
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port->read_urb->transfer_buffer_length,
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usb_serial_generic_write_bulk_callback, port);
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result = usb_submit_urb(port->read_urb, GFP_KERNEL);
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if (result)
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dev_err(&port->dev,
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"%s - failed submitting read urb, error %d\n",
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__FUNCTION__, result);
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return result;
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}
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static struct usb_serial_driver anydata_device = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "anydata",
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},
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.id_table = id_table,
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.num_interrupt_in = NUM_DONT_CARE,
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.num_bulk_in = NUM_DONT_CARE,
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.num_bulk_out = NUM_DONT_CARE,
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.num_ports = 1,
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.open = anydata_open,
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};
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static int __init anydata_init(void)
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{
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int retval;
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retval = usb_serial_register(&anydata_device);
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if (retval)
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return retval;
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retval = usb_register(&anydata_driver);
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if (retval)
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usb_serial_deregister(&anydata_device);
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return retval;
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}
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static void __exit anydata_exit(void)
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{
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usb_deregister(&anydata_driver);
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usb_serial_deregister(&anydata_device);
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}
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module_init(anydata_init);
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module_exit(anydata_exit);
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MODULE_LICENSE("GPL");
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module_param(debug, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug, "Debug enabled or not");
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module_param(buffer_size, int, 0);
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MODULE_PARM_DESC(buffer_size, "Size of the transfer buffers");
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