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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * USB IR Dongle driver
3 *
4 * Copyright (C) 2001-2002 Greg Kroah-Hartman (greg@kroah.com)
5 * Copyright (C) 2002 Gary Brubaker (xavyer@ix.netcom.com)
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +02006 * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This driver allows a USB IrDA device to be used as a "dumb" serial device.
14 * This can be useful if you do not have access to a full IrDA stack on the
15 * other side of the connection. If you do have an IrDA stack on both devices,
16 * please use the usb-irda driver, as it contains the proper error checking and
17 * other goodness of a full IrDA stack.
18 *
19 * Portions of this driver were taken from drivers/net/irda/irda-usb.c, which
20 * was written by Roman Weissgaerber <weissg@vienna.at>, Dag Brattli
21 * <dag@brattli.net>, and Jean Tourrilhes <jt@hpl.hp.com>
22 *
Felipe Balbie0d795e2008-06-03 14:47:52 +030023 * See Documentation/usb/usb-serial.txt for more information on using this
24 * driver
Linus Torvalds1da177e2005-04-16 15:20:36 -070025 */
26
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <linux/kernel.h>
28#include <linux/errno.h>
29#include <linux/init.h>
30#include <linux/slab.h>
31#include <linux/tty.h>
32#include <linux/tty_driver.h>
33#include <linux/tty_flip.h>
34#include <linux/module.h>
35#include <linux/spinlock.h>
Felipe Balbie0d795e2008-06-03 14:47:52 +030036#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070037#include <linux/usb.h>
Greg Kroah-Hartmana9698882006-07-11 21:22:58 -070038#include <linux/usb/serial.h>
Felipe Balbie0d795e2008-06-03 14:47:52 +030039#include <linux/usb/irda.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070040
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +020041#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Johan Hovold <jhovold@gmail.com>"
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#define DRIVER_DESC "USB IR Dongle driver"
43
Linus Torvalds1da177e2005-04-16 15:20:36 -070044/* if overridden by the user, then use their value for the size of the read and
45 * write urbs */
46static int buffer_size;
Felipe Balbie0d795e2008-06-03 14:47:52 +030047
Linus Torvalds1da177e2005-04-16 15:20:36 -070048/* if overridden by the user, then use the specified number of XBOFs */
49static int xbof = -1;
50
Alan Cox95da3102008-07-22 11:09:07 +010051static int ir_startup (struct usb_serial *serial);
Alan Coxa509a7e2009-09-19 13:13:26 -070052static int ir_open(struct tty_struct *tty, struct usb_serial_port *port);
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +020053static int ir_prepare_write_buffer(struct usb_serial_port *port,
54 void *dest, size_t size);
55static void ir_process_read_urb(struct urb *urb);
Alan Cox95da3102008-07-22 11:09:07 +010056static void ir_set_termios(struct tty_struct *tty,
57 struct usb_serial_port *port, struct ktermios *old_termios);
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
Alan Coxa6ea4382007-06-22 14:44:54 +010059/* Not that this lot means you can only have one per system */
Felipe Balbie0d795e2008-06-03 14:47:52 +030060static u8 ir_baud;
61static u8 ir_xbof;
62static u8 ir_add_bof;
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
Németh Márton7d40d7e2010-01-10 15:34:24 +010064static const struct usb_device_id ir_id_table[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 { USB_DEVICE(0x050f, 0x0180) }, /* KC Technology, KC-180 */
66 { USB_DEVICE(0x08e9, 0x0100) }, /* XTNDAccess */
67 { USB_DEVICE(0x09c4, 0x0011) }, /* ACTiSys ACT-IR2000U */
Felipe Balbie0d795e2008-06-03 14:47:52 +030068 { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, USB_SUBCLASS_IRDA, 0) },
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 { } /* Terminating entry */
70};
71
Felipe Balbie0d795e2008-06-03 14:47:52 +030072MODULE_DEVICE_TABLE(usb, ir_id_table);
Linus Torvalds1da177e2005-04-16 15:20:36 -070073
Greg Kroah-Hartmanea653702005-06-20 21:15:16 -070074static struct usb_serial_driver ir_device = {
Felipe Balbie0d795e2008-06-03 14:47:52 +030075 .driver = {
76 .owner = THIS_MODULE,
77 .name = "ir-usb",
Greg Kroah-Hartman18fcac32005-06-20 21:15:16 -070078 },
Felipe Balbie0d795e2008-06-03 14:47:52 +030079 .description = "IR Dongle",
Felipe Balbie0d795e2008-06-03 14:47:52 +030080 .id_table = ir_id_table,
81 .num_ports = 1,
82 .set_termios = ir_set_termios,
83 .attach = ir_startup,
84 .open = ir_open,
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +020085 .prepare_write_buffer = ir_prepare_write_buffer,
86 .process_read_urb = ir_process_read_urb,
Linus Torvalds1da177e2005-04-16 15:20:36 -070087};
88
Alan Stern7dbe2462012-02-23 14:56:57 -050089static struct usb_serial_driver * const serial_drivers[] = {
90 &ir_device, NULL
91};
92
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -070093static inline void irda_usb_dump_class_desc(struct usb_serial *serial,
94 struct usb_irda_cs_descriptor *desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -070095{
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -070096 struct device *dev = &serial->dev->dev;
97
98 dev_dbg(dev, "bLength=%x\n", desc->bLength);
99 dev_dbg(dev, "bDescriptorType=%x\n", desc->bDescriptorType);
100 dev_dbg(dev, "bcdSpecRevision=%x\n", __le16_to_cpu(desc->bcdSpecRevision));
101 dev_dbg(dev, "bmDataSize=%x\n", desc->bmDataSize);
102 dev_dbg(dev, "bmWindowSize=%x\n", desc->bmWindowSize);
103 dev_dbg(dev, "bmMinTurnaroundTime=%d\n", desc->bmMinTurnaroundTime);
104 dev_dbg(dev, "wBaudRate=%x\n", __le16_to_cpu(desc->wBaudRate));
105 dev_dbg(dev, "bmAdditionalBOFs=%x\n", desc->bmAdditionalBOFs);
106 dev_dbg(dev, "bIrdaRateSniff=%x\n", desc->bIrdaRateSniff);
107 dev_dbg(dev, "bMaxUnicastList=%x\n", desc->bMaxUnicastList);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108}
109
110/*------------------------------------------------------------------*/
111/*
112 * Function irda_usb_find_class_desc(dev, ifnum)
113 *
114 * Returns instance of IrDA class descriptor, or NULL if not found
115 *
116 * The class descriptor is some extra info that IrDA USB devices will
117 * offer to us, describing their IrDA characteristics. We will use that in
118 * irda_usb_init_qos()
119 *
120 * Based on the same function in drivers/net/irda/irda-usb.c
121 */
Felipe Balbie0d795e2008-06-03 14:47:52 +0300122static struct usb_irda_cs_descriptor *
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700123irda_usb_find_class_desc(struct usb_serial *serial, unsigned int ifnum)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124{
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700125 struct usb_device *dev = serial->dev;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300126 struct usb_irda_cs_descriptor *desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 int ret;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300128
129 desc = kzalloc(sizeof(*desc), GFP_KERNEL);
130 if (!desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 return NULL;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300132
133 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
134 USB_REQ_CS_IRDA_GET_CLASS_DESC,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
136 0, ifnum, desc, sizeof(*desc), 1000);
Felipe Balbie0d795e2008-06-03 14:47:52 +0300137
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700138 dev_dbg(&serial->dev->dev, "%s - ret=%d\n", __func__, ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 if (ret < sizeof(*desc)) {
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700140 dev_dbg(&serial->dev->dev,
141 "%s - class descriptor read %s (%d)\n", __func__,
142 (ret < 0) ? "failed" : "too short", ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 goto error;
144 }
Felipe Balbie0d795e2008-06-03 14:47:52 +0300145 if (desc->bDescriptorType != USB_DT_CS_IRDA) {
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700146 dev_dbg(&serial->dev->dev, "%s - bad class descriptor type\n",
147 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 goto error;
149 }
Felipe Balbie0d795e2008-06-03 14:47:52 +0300150
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700151 irda_usb_dump_class_desc(serial, desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 return desc;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300153
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154error:
155 kfree(desc);
156 return NULL;
157}
158
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159static u8 ir_xbof_change(u8 xbof)
160{
161 u8 result;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300162
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 /* reference irda-usb.c */
Felipe Balbie0d795e2008-06-03 14:47:52 +0300164 switch (xbof) {
165 case 48:
166 result = 0x10;
167 break;
168 case 28:
169 case 24:
170 result = 0x20;
171 break;
172 default:
173 case 12:
174 result = 0x30;
175 break;
176 case 5:
177 case 6:
178 result = 0x40;
179 break;
180 case 3:
181 result = 0x50;
182 break;
183 case 2:
184 result = 0x60;
185 break;
186 case 1:
187 result = 0x70;
188 break;
189 case 0:
190 result = 0x80;
191 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 }
Felipe Balbie0d795e2008-06-03 14:47:52 +0300193
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 return(result);
195}
196
Felipe Balbie0d795e2008-06-03 14:47:52 +0300197static int ir_startup(struct usb_serial *serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198{
Felipe Balbie0d795e2008-06-03 14:47:52 +0300199 struct usb_irda_cs_descriptor *irda_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700201 irda_desc = irda_usb_find_class_desc(serial, 0);
Felipe Balbie0d795e2008-06-03 14:47:52 +0300202 if (!irda_desc) {
203 dev_err(&serial->dev->dev,
204 "IRDA class descriptor not found, device not bound\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 return -ENODEV;
206 }
207
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700208 dev_dbg(&serial->dev->dev,
209 "%s - Baud rates supported:%s%s%s%s%s%s%s%s%s\n",
Harvey Harrison441b62c2008-03-03 16:08:34 -0800210 __func__,
Felipe Balbie0d795e2008-06-03 14:47:52 +0300211 (irda_desc->wBaudRate & USB_IRDA_BR_2400) ? " 2400" : "",
212 (irda_desc->wBaudRate & USB_IRDA_BR_9600) ? " 9600" : "",
213 (irda_desc->wBaudRate & USB_IRDA_BR_19200) ? " 19200" : "",
214 (irda_desc->wBaudRate & USB_IRDA_BR_38400) ? " 38400" : "",
215 (irda_desc->wBaudRate & USB_IRDA_BR_57600) ? " 57600" : "",
216 (irda_desc->wBaudRate & USB_IRDA_BR_115200) ? " 115200" : "",
217 (irda_desc->wBaudRate & USB_IRDA_BR_576000) ? " 576000" : "",
218 (irda_desc->wBaudRate & USB_IRDA_BR_1152000) ? " 1152000" : "",
219 (irda_desc->wBaudRate & USB_IRDA_BR_4000000) ? " 4000000" : "");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220
Felipe Balbie0d795e2008-06-03 14:47:52 +0300221 switch (irda_desc->bmAdditionalBOFs) {
222 case USB_IRDA_AB_48:
223 ir_add_bof = 48;
224 break;
225 case USB_IRDA_AB_24:
226 ir_add_bof = 24;
227 break;
228 case USB_IRDA_AB_12:
229 ir_add_bof = 12;
230 break;
231 case USB_IRDA_AB_6:
232 ir_add_bof = 6;
233 break;
234 case USB_IRDA_AB_3:
235 ir_add_bof = 3;
236 break;
237 case USB_IRDA_AB_2:
238 ir_add_bof = 2;
239 break;
240 case USB_IRDA_AB_1:
241 ir_add_bof = 1;
242 break;
243 case USB_IRDA_AB_0:
244 ir_add_bof = 0;
245 break;
246 default:
247 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 }
249
Felipe Balbie0d795e2008-06-03 14:47:52 +0300250 kfree(irda_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251
Felipe Balbie0d795e2008-06-03 14:47:52 +0300252 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253}
254
Alan Coxa509a7e2009-09-19 13:13:26 -0700255static int ir_open(struct tty_struct *tty, struct usb_serial_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256{
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200257 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200259 for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i)
260 port->write_urbs[i]->transfer_flags = URB_ZERO_PACKET;
261
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 /* Start reading from the device */
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200263 return usb_serial_generic_open(tty, port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264}
265
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200266static int ir_prepare_write_buffer(struct usb_serial_port *port,
267 void *dest, size_t size)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268{
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200269 unsigned char *buf = dest;
Johan Hovolde421fe92010-05-19 00:01:34 +0200270 int count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
272 /*
273 * The first byte of the packet we send to the device contains an
Felipe Balbie0d795e2008-06-03 14:47:52 +0300274 * inbound header which indicates an additional number of BOFs and
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 * a baud rate change.
276 *
277 * See section 5.4.2.2 of the USB IrDA spec.
278 */
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200279 *buf = ir_xbof | ir_baud;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
Johan Hovolde421fe92010-05-19 00:01:34 +0200281 count = kfifo_out_locked(&port->write_fifo, buf + 1, size - 1,
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200282 &port->lock);
Johan Hovolde421fe92010-05-19 00:01:34 +0200283 return count + 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284}
285
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200286static void ir_process_read_urb(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287{
Ming Leicdc97792008-02-24 18:41:47 +0800288 struct usb_serial_port *port = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 unsigned char *data = urb->transfer_buffer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200291 if (!urb->actual_length)
292 return;
293 /*
294 * The first byte of the packet we get from the device
295 * contains a busy indicator and baud rate change.
296 * See section 5.4.1.2 of the USB IrDA spec.
297 */
298 if (*data & 0x0f)
299 ir_baud = *data & 0x0f;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200301 if (urb->actual_length == 1)
302 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303
Jiri Slaby05c7cd32013-01-03 15:53:04 +0100304 tty_insert_flip_string(&port->port, data + 1, urb->actual_length - 1);
Jiri Slaby2e124b42013-01-03 15:53:06 +0100305 tty_flip_buffer_push(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306}
307
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200308static void ir_set_termios_callback(struct urb *urb)
309{
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200310 kfree(urb->transfer_buffer);
311
Greg Kroah-Hartmanb9783552012-05-03 16:44:20 -0700312 if (urb->status)
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700313 dev_dbg(&urb->dev->dev, "%s - non-zero urb status: %d\n",
314 __func__, urb->status);
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200315}
316
Alan Cox95da3102008-07-22 11:09:07 +0100317static void ir_set_termios(struct tty_struct *tty,
318 struct usb_serial_port *port, struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319{
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200320 struct urb *urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 unsigned char *transfer_buffer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 int result;
Alan Coxa6ea4382007-06-22 14:44:54 +0100323 speed_t baud;
324 int ir_baud;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
Alan Cox95da3102008-07-22 11:09:07 +0100326 baud = tty_get_baud_rate(tty);
Alan Coxa6ea4382007-06-22 14:44:54 +0100327
328 /*
329 * FIXME, we should compare the baud request against the
330 * capability stated in the IR header that we got in the
331 * startup function.
332 */
333
334 switch (baud) {
Felipe Balbie0d795e2008-06-03 14:47:52 +0300335 case 2400:
336 ir_baud = USB_IRDA_BR_2400;
337 break;
338 case 9600:
339 ir_baud = USB_IRDA_BR_9600;
340 break;
341 case 19200:
342 ir_baud = USB_IRDA_BR_19200;
343 break;
344 case 38400:
345 ir_baud = USB_IRDA_BR_38400;
346 break;
347 case 57600:
348 ir_baud = USB_IRDA_BR_57600;
349 break;
350 case 115200:
351 ir_baud = USB_IRDA_BR_115200;
352 break;
353 case 576000:
354 ir_baud = USB_IRDA_BR_576000;
355 break;
356 case 1152000:
357 ir_baud = USB_IRDA_BR_1152000;
358 break;
359 case 4000000:
360 ir_baud = USB_IRDA_BR_4000000;
361 break;
362 default:
363 ir_baud = USB_IRDA_BR_9600;
364 baud = 9600;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 }
366
Alan Coxa6ea4382007-06-22 14:44:54 +0100367 if (xbof == -1)
368 ir_xbof = ir_xbof_change(ir_add_bof);
369 else
370 ir_xbof = ir_xbof_change(xbof) ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
Alan Cox560aac22007-10-18 01:24:20 -0700372 /* Only speed changes are supported */
Alan Coxadc8d742012-07-14 15:31:47 +0100373 tty_termios_copy_hw(&tty->termios, old_termios);
Alan Cox95da3102008-07-22 11:09:07 +0100374 tty_encode_baud_rate(tty, baud, baud);
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200375
376 /*
377 * send the baud change out on an "empty" data packet
378 */
379 urb = usb_alloc_urb(0, GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +0100380 if (!urb)
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200381 return;
Johan Hovold10c642d2013-12-29 19:22:56 +0100382
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200383 transfer_buffer = kmalloc(1, GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +0100384 if (!transfer_buffer)
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200385 goto err_buf;
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200386
387 *transfer_buffer = ir_xbof | ir_baud;
388
389 usb_fill_bulk_urb(
390 urb,
391 port->serial->dev,
392 usb_sndbulkpipe(port->serial->dev,
393 port->bulk_out_endpointAddress),
394 transfer_buffer,
395 1,
396 ir_set_termios_callback,
397 port);
398
399 urb->transfer_flags = URB_ZERO_PACKET;
400
401 result = usb_submit_urb(urb, GFP_KERNEL);
402 if (result) {
403 dev_err(&port->dev, "%s - failed to submit urb: %d\n",
404 __func__, result);
405 goto err_subm;
406 }
407
408 usb_free_urb(urb);
409
410 return;
411err_subm:
412 kfree(transfer_buffer);
413err_buf:
414 usb_free_urb(urb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415}
416
Felipe Balbie0d795e2008-06-03 14:47:52 +0300417static int __init ir_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418{
Johan Hovold6f6ed692010-05-13 21:02:01 +0200419 if (buffer_size) {
420 ir_device.bulk_in_size = buffer_size;
421 ir_device.bulk_out_size = buffer_size;
422 }
423
Greg Kroah-Hartman7663e302012-09-18 17:00:48 +0100424 return usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, ir_id_table);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425}
426
Felipe Balbie0d795e2008-06-03 14:47:52 +0300427static void __exit ir_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428{
Greg Kroah-Hartman68e24112012-05-08 15:46:14 -0700429 usb_serial_deregister_drivers(serial_drivers);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430}
431
432
433module_init(ir_init);
434module_exit(ir_exit);
435
436MODULE_AUTHOR(DRIVER_AUTHOR);
437MODULE_DESCRIPTION(DRIVER_DESC);
438MODULE_LICENSE("GPL");
439
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440module_param(xbof, int, 0);
441MODULE_PARM_DESC(xbof, "Force specific number of XBOFs");
442module_param(buffer_size, int, 0);
443MODULE_PARM_DESC(buffer_size, "Size of the transfer buffers");
444