aircable.c revision 4272568b3dd8dbad36014a107c0fbbef6400c917
13fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* 23fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * AIRcable USB Bluetooth Dongle Driver. 33fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 44272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold * Copyright (C) 2010 Johan Hovold <jhovold@gmail.com> 53fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Copyright (C) 2006 Manuel Francisco Naranjo (naranjo.manuel@gmail.com) 64272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold * 73fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * This program is free software; you can redistribute it and/or modify it under 83fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * the terms of the GNU General Public License version 2 as published by the 93fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Free Software Foundation. 103fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 113fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * The device works as an standard CDC device, it has 2 interfaces, the first 123fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * one is for firmware access and the second is the serial one. 133fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * The protocol is very simply, there are two posibilities reading or writing. 14beb7dd86a101263bf63a78c7c6d4da3849b35bd6Robert P. J. Day * When writing the first urb must have a Header that starts with 0x20 0x29 the 153fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * next two bytes must say how much data will be sended. 163fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * When reading the process is almost equal except that the header starts with 173fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 0x00 0x20. 183fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 193fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * The device simply need some stuff to understand data comming from the usb 203fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * buffer: The First and Second byte is used for a Header, the Third and Fourth 213fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * tells the device the amount of information the package holds. 223fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Packages are 60 bytes long Header Stuff. 23beb7dd86a101263bf63a78c7c6d4da3849b35bd6Robert P. J. Day * When writing to the device the first two bytes of the header are 0x20 0x29 243fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * When reading the bytes are 0x00 0x20, or 0x00 0x10, there is an strange 253fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * situation, when too much data arrives to the device because it sends the data 263fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * but with out the header. I will use a simply hack to override this situation, 273fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * if there is data coming that does not contain any header, then that is data 283fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * that must go directly to the tty, as there is no documentation about if there 293fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * is any other control code, I will simply check for the first 303fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * one. 313fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 323fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * The driver registers himself with the USB-serial core and the USB Core. I had 333fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * to implement a probe function agains USB-serial, because other way, the 343fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * driver was attaching himself to both interfaces. I have tryed with different 353fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * configurations of usb_serial_driver with out exit, only the probe function 363fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * could handle this correctly. 373fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 383fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * I have taken some info from a Greg Kroah-Hartman article: 393fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * http://www.linuxjournal.com/article/6573 403fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * And from Linux Device Driver Kit CD, which is a great work, the authors taken 413fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * the work to recompile lots of information an knowladge in drivers development 423fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * and made it all avaible inside a cd. 433fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * URL: http://kernel.org/pub/linux/kernel/people/gregkh/ddk/ 443fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 453fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 463fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 474272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold#include <asm/unaligned.h> 483fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#include <linux/tty.h> 495a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 503fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#include <linux/tty_flip.h> 513fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#include <linux/usb.h> 523fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#include <linux/usb/serial.h> 533fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 543fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic int debug; 553fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 563fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* Vendor and Product ID */ 573fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define AIRCABLE_VID 0x16CA 583fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define AIRCABLE_USB_PID 0x1502 593fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 603fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* Protocol Stuff */ 613fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define HCI_HEADER_LENGTH 0x4 623fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define TX_HEADER_0 0x20 633fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define TX_HEADER_1 0x29 643fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define RX_HEADER_0 0x00 653fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define RX_HEADER_1 0x20 663fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define HCI_COMPLETE_FRAME 64 673fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 683fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* rx_flags */ 693fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define THROTTLED 0x01 703fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define ACTUALLY_THROTTLED 0x02 713fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 723fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* 733fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Version Information 743fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 754272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold#define DRIVER_VERSION "v2.0" 764272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold#define DRIVER_AUTHOR "Naranjo, Manuel Francisco <naranjo.manuel@gmail.com>, Johan Hovold <jhovold@gmail.com>" 773fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define DRIVER_DESC "AIRcable USB Driver" 783fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 793fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* ID table that will be registered with USB core */ 807d40d7e85a25e01948bcb4dc3eda1355af318337Németh Mártonstatic const struct usb_device_id id_table[] = { 813fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo { USB_DEVICE(AIRCABLE_VID, AIRCABLE_USB_PID) }, 823fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo { }, 833fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo}; 843fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_DEVICE_TABLE(usb, id_table); 853fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 864272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovoldstatic int aircable_prepare_write_buffer(struct usb_serial_port *port, 874272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold void **dest, size_t size, const void *src, size_t count) 883fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 894272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold unsigned char *buf = *dest; 903fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 914272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold count = kfifo_out_locked(&port->write_fifo, buf + HCI_HEADER_LENGTH, 924272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold size - HCI_HEADER_LENGTH, &port->lock); 933fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo buf[0] = TX_HEADER_0; 943fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo buf[1] = TX_HEADER_1; 954272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold put_unaligned_le16(count, &buf[2]); 963fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 974272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold return count; 983fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 993fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1003fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic int aircable_probe(struct usb_serial *serial, 1013fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo const struct usb_device_id *id) 1023fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 103c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox struct usb_host_interface *iface_desc = serial->interface-> 104c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox cur_altsetting; 1053fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct usb_endpoint_descriptor *endpoint; 106c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox int num_bulk_out = 0; 1073fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int i; 1083fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1093fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { 1103fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo endpoint = &iface_desc->endpoint[i].desc; 111377f13bf95b64cf5fb0fad0bf2b94106ad868562Luiz Fernando N. Capitulino if (usb_endpoint_is_bulk_out(endpoint)) { 1123fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo dbg("found bulk out on endpoint %d", i); 1133fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo ++num_bulk_out; 1143fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 1153fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 1163fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1173fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (num_bulk_out == 0) { 1183fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo dbg("Invalid interface, discarding"); 1193fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return -ENODEV; 1203fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 1213fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1223fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return 0; 1233fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 1243fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1254272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovoldstatic int aircable_process_packet(struct tty_struct *tty, 1264272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold struct usb_serial_port *port, int has_headers, 1274272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold char *packet, int len) 1283fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 1294272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold if (has_headers) { 1304272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold len -= HCI_HEADER_LENGTH; 1314272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold packet += HCI_HEADER_LENGTH; 1323fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 1334272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold if (len <= 0) { 1344272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold dbg("%s - malformed packet", __func__); 1354272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold return 0; 1363fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 1373fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1384272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold tty_insert_flip_string(tty, packet, len); 1393fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1404272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold return len; 1413fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 1423fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1434272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovoldstatic void aircable_process_read_urb(struct urb *urb) 1443fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 1453fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct usb_serial_port *port = urb->context; 1464272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold char *data = (char *)urb->transfer_buffer; 1473fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct tty_struct *tty; 1484272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold int has_headers; 1494272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold int count; 1504272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold int len; 1514272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold int i; 1523fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1534a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty = tty_port_tty_get(&port->port); 1544272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold if (!tty) 1554272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold return; 1563fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1574272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold has_headers = (urb->actual_length > 2 && data[0] == RX_HEADER_0); 1583fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1594272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold count = 0; 1604272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold for (i = 0; i < urb->actual_length; i += HCI_COMPLETE_FRAME) { 1614272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold len = min_t(int, urb->actual_length - i, HCI_COMPLETE_FRAME); 1624272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold count += aircable_process_packet(tty, port, has_headers, 1634272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold &data[i], len); 1643fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 1653fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1664272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold if (count) 1674272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold tty_flip_buffer_push(tty); 1684272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold tty_kref_put(tty); 1693fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 1703fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 171d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzlstatic struct usb_driver aircable_driver = { 172d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .name = "aircable", 173d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .probe = usb_serial_probe, 174d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .disconnect = usb_serial_disconnect, 175d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .id_table = id_table, 176d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .no_dynamic_id = 1, 177d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl}; 178d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl 1793fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic struct usb_serial_driver aircable_device = { 18052d67f0b5c1b1827cd842020d40bdde4f7d04f59Johannes Hölzl .driver = { 18152d67f0b5c1b1827cd842020d40bdde4f7d04f59Johannes Hölzl .owner = THIS_MODULE, 18252d67f0b5c1b1827cd842020d40bdde4f7d04f59Johannes Hölzl .name = "aircable", 18352d67f0b5c1b1827cd842020d40bdde4f7d04f59Johannes Hölzl }, 184d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .usb_driver = &aircable_driver, 1853fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .id_table = id_table, 1863fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .num_ports = 1, 1874272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold .bulk_out_size = HCI_COMPLETE_FRAME, 1884272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold /* Must modify prepare_write_buffer if multi_urb_write is changed. */ 1894272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold .multi_urb_write = 0, 1903fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .probe = aircable_probe, 1914272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold .process_read_urb = aircable_process_read_urb, 1924272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold .prepare_write_buffer = aircable_prepare_write_buffer, 1934272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold .throttle = usb_serial_generic_throttle, 1944272568b3dd8dbad36014a107c0fbbef6400c917Johan Hovold .unthrottle = usb_serial_generic_unthrottle, 1953fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo}; 1963fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 197c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Coxstatic int __init aircable_init(void) 1983fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 1993fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int retval; 2003fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo retval = usb_serial_register(&aircable_device); 2013fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (retval) 2023fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo goto failed_serial_register; 2033fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo retval = usb_register(&aircable_driver); 2043fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (retval) 2053fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo goto failed_usb_register; 2063fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return 0; 2073fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2083fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjofailed_usb_register: 20978c8fb3717cdff35ad118e17ac7495d0cf21a61fDave Young usb_serial_deregister(&aircable_device); 21078c8fb3717cdff35ad118e17ac7495d0cf21a61fDave Youngfailed_serial_register: 2113fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return retval; 2123fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 2133fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 214c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Coxstatic void __exit aircable_exit(void) 2153fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 2163fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo usb_deregister(&aircable_driver); 2173fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo usb_serial_deregister(&aircable_device); 2183fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 2193fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2203fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_AUTHOR(DRIVER_AUTHOR); 2213fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_DESCRIPTION(DRIVER_DESC); 2223fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_VERSION(DRIVER_VERSION); 2233fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_LICENSE("GPL"); 2243fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2253fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjomodule_init(aircable_init); 2263fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjomodule_exit(aircable_exit); 2273fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2283fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjomodule_param(debug, bool, S_IRUGO | S_IWUSR); 2293fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_PARM_DESC(debug, "Debug enabled or not"); 230