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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
41/*
42 * Version Information
43 */
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +020044#define DRIVER_VERSION "v0.5"
45#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Johan Hovold <jhovold@gmail.com>"
Linus Torvalds1da177e2005-04-16 15:20:36 -070046#define DRIVER_DESC "USB IR Dongle driver"
47
Rusty Russell90ab5ee2012-01-13 09:32:20 +103048static bool debug;
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
50/* if overridden by the user, then use their value for the size of the read and
51 * write urbs */
52static int buffer_size;
Felipe Balbie0d795e2008-06-03 14:47:52 +030053
Linus Torvalds1da177e2005-04-16 15:20:36 -070054/* if overridden by the user, then use the specified number of XBOFs */
55static int xbof = -1;
56
Alan Cox95da3102008-07-22 11:09:07 +010057static int ir_startup (struct usb_serial *serial);
Alan Coxa509a7e2009-09-19 13:13:26 -070058static int ir_open(struct tty_struct *tty, struct usb_serial_port *port);
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +020059static int ir_prepare_write_buffer(struct usb_serial_port *port,
60 void *dest, size_t size);
61static void ir_process_read_urb(struct urb *urb);
Alan Cox95da3102008-07-22 11:09:07 +010062static void ir_set_termios(struct tty_struct *tty,
63 struct usb_serial_port *port, struct ktermios *old_termios);
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
Alan Coxa6ea4382007-06-22 14:44:54 +010065/* Not that this lot means you can only have one per system */
Felipe Balbie0d795e2008-06-03 14:47:52 +030066static u8 ir_baud;
67static u8 ir_xbof;
68static u8 ir_add_bof;
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Németh Márton7d40d7e2010-01-10 15:34:24 +010070static const struct usb_device_id ir_id_table[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 { USB_DEVICE(0x050f, 0x0180) }, /* KC Technology, KC-180 */
72 { USB_DEVICE(0x08e9, 0x0100) }, /* XTNDAccess */
73 { USB_DEVICE(0x09c4, 0x0011) }, /* ACTiSys ACT-IR2000U */
Felipe Balbie0d795e2008-06-03 14:47:52 +030074 { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, USB_SUBCLASS_IRDA, 0) },
Linus Torvalds1da177e2005-04-16 15:20:36 -070075 { } /* Terminating entry */
76};
77
Felipe Balbie0d795e2008-06-03 14:47:52 +030078MODULE_DEVICE_TABLE(usb, ir_id_table);
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
Greg Kroah-Hartmanea653702005-06-20 21:15:16 -070080static struct usb_serial_driver ir_device = {
Felipe Balbie0d795e2008-06-03 14:47:52 +030081 .driver = {
82 .owner = THIS_MODULE,
83 .name = "ir-usb",
Greg Kroah-Hartman18fcac32005-06-20 21:15:16 -070084 },
Felipe Balbie0d795e2008-06-03 14:47:52 +030085 .description = "IR Dongle",
Felipe Balbie0d795e2008-06-03 14:47:52 +030086 .id_table = ir_id_table,
87 .num_ports = 1,
88 .set_termios = ir_set_termios,
89 .attach = ir_startup,
90 .open = ir_open,
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +020091 .prepare_write_buffer = ir_prepare_write_buffer,
92 .process_read_urb = ir_process_read_urb,
Linus Torvalds1da177e2005-04-16 15:20:36 -070093};
94
Alan Stern7dbe2462012-02-23 14:56:57 -050095static struct usb_serial_driver * const serial_drivers[] = {
96 &ir_device, NULL
97};
98
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -070099static inline void irda_usb_dump_class_desc(struct usb_serial *serial,
100 struct usb_irda_cs_descriptor *desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101{
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700102 struct device *dev = &serial->dev->dev;
103
104 dev_dbg(dev, "bLength=%x\n", desc->bLength);
105 dev_dbg(dev, "bDescriptorType=%x\n", desc->bDescriptorType);
106 dev_dbg(dev, "bcdSpecRevision=%x\n", __le16_to_cpu(desc->bcdSpecRevision));
107 dev_dbg(dev, "bmDataSize=%x\n", desc->bmDataSize);
108 dev_dbg(dev, "bmWindowSize=%x\n", desc->bmWindowSize);
109 dev_dbg(dev, "bmMinTurnaroundTime=%d\n", desc->bmMinTurnaroundTime);
110 dev_dbg(dev, "wBaudRate=%x\n", __le16_to_cpu(desc->wBaudRate));
111 dev_dbg(dev, "bmAdditionalBOFs=%x\n", desc->bmAdditionalBOFs);
112 dev_dbg(dev, "bIrdaRateSniff=%x\n", desc->bIrdaRateSniff);
113 dev_dbg(dev, "bMaxUnicastList=%x\n", desc->bMaxUnicastList);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114}
115
116/*------------------------------------------------------------------*/
117/*
118 * Function irda_usb_find_class_desc(dev, ifnum)
119 *
120 * Returns instance of IrDA class descriptor, or NULL if not found
121 *
122 * The class descriptor is some extra info that IrDA USB devices will
123 * offer to us, describing their IrDA characteristics. We will use that in
124 * irda_usb_init_qos()
125 *
126 * Based on the same function in drivers/net/irda/irda-usb.c
127 */
Felipe Balbie0d795e2008-06-03 14:47:52 +0300128static struct usb_irda_cs_descriptor *
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700129irda_usb_find_class_desc(struct usb_serial *serial, unsigned int ifnum)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130{
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700131 struct usb_device *dev = serial->dev;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300132 struct usb_irda_cs_descriptor *desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 int ret;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300134
135 desc = kzalloc(sizeof(*desc), GFP_KERNEL);
136 if (!desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 return NULL;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300138
139 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
140 USB_REQ_CS_IRDA_GET_CLASS_DESC,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
142 0, ifnum, desc, sizeof(*desc), 1000);
Felipe Balbie0d795e2008-06-03 14:47:52 +0300143
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700144 dev_dbg(&serial->dev->dev, "%s - ret=%d\n", __func__, ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 if (ret < sizeof(*desc)) {
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700146 dev_dbg(&serial->dev->dev,
147 "%s - class descriptor read %s (%d)\n", __func__,
148 (ret < 0) ? "failed" : "too short", ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 goto error;
150 }
Felipe Balbie0d795e2008-06-03 14:47:52 +0300151 if (desc->bDescriptorType != USB_DT_CS_IRDA) {
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700152 dev_dbg(&serial->dev->dev, "%s - bad class descriptor type\n",
153 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 goto error;
155 }
Felipe Balbie0d795e2008-06-03 14:47:52 +0300156
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700157 irda_usb_dump_class_desc(serial, desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 return desc;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300159
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160error:
161 kfree(desc);
162 return NULL;
163}
164
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165static u8 ir_xbof_change(u8 xbof)
166{
167 u8 result;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300168
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 /* reference irda-usb.c */
Felipe Balbie0d795e2008-06-03 14:47:52 +0300170 switch (xbof) {
171 case 48:
172 result = 0x10;
173 break;
174 case 28:
175 case 24:
176 result = 0x20;
177 break;
178 default:
179 case 12:
180 result = 0x30;
181 break;
182 case 5:
183 case 6:
184 result = 0x40;
185 break;
186 case 3:
187 result = 0x50;
188 break;
189 case 2:
190 result = 0x60;
191 break;
192 case 1:
193 result = 0x70;
194 break;
195 case 0:
196 result = 0x80;
197 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 }
Felipe Balbie0d795e2008-06-03 14:47:52 +0300199
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 return(result);
201}
202
Felipe Balbie0d795e2008-06-03 14:47:52 +0300203static int ir_startup(struct usb_serial *serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204{
Felipe Balbie0d795e2008-06-03 14:47:52 +0300205 struct usb_irda_cs_descriptor *irda_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700207 irda_desc = irda_usb_find_class_desc(serial, 0);
Felipe Balbie0d795e2008-06-03 14:47:52 +0300208 if (!irda_desc) {
209 dev_err(&serial->dev->dev,
210 "IRDA class descriptor not found, device not bound\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 return -ENODEV;
212 }
213
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700214 dev_dbg(&serial->dev->dev,
215 "%s - Baud rates supported:%s%s%s%s%s%s%s%s%s\n",
Harvey Harrison441b62c2008-03-03 16:08:34 -0800216 __func__,
Felipe Balbie0d795e2008-06-03 14:47:52 +0300217 (irda_desc->wBaudRate & USB_IRDA_BR_2400) ? " 2400" : "",
218 (irda_desc->wBaudRate & USB_IRDA_BR_9600) ? " 9600" : "",
219 (irda_desc->wBaudRate & USB_IRDA_BR_19200) ? " 19200" : "",
220 (irda_desc->wBaudRate & USB_IRDA_BR_38400) ? " 38400" : "",
221 (irda_desc->wBaudRate & USB_IRDA_BR_57600) ? " 57600" : "",
222 (irda_desc->wBaudRate & USB_IRDA_BR_115200) ? " 115200" : "",
223 (irda_desc->wBaudRate & USB_IRDA_BR_576000) ? " 576000" : "",
224 (irda_desc->wBaudRate & USB_IRDA_BR_1152000) ? " 1152000" : "",
225 (irda_desc->wBaudRate & USB_IRDA_BR_4000000) ? " 4000000" : "");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226
Felipe Balbie0d795e2008-06-03 14:47:52 +0300227 switch (irda_desc->bmAdditionalBOFs) {
228 case USB_IRDA_AB_48:
229 ir_add_bof = 48;
230 break;
231 case USB_IRDA_AB_24:
232 ir_add_bof = 24;
233 break;
234 case USB_IRDA_AB_12:
235 ir_add_bof = 12;
236 break;
237 case USB_IRDA_AB_6:
238 ir_add_bof = 6;
239 break;
240 case USB_IRDA_AB_3:
241 ir_add_bof = 3;
242 break;
243 case USB_IRDA_AB_2:
244 ir_add_bof = 2;
245 break;
246 case USB_IRDA_AB_1:
247 ir_add_bof = 1;
248 break;
249 case USB_IRDA_AB_0:
250 ir_add_bof = 0;
251 break;
252 default:
253 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 }
255
Felipe Balbie0d795e2008-06-03 14:47:52 +0300256 kfree(irda_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
Felipe Balbie0d795e2008-06-03 14:47:52 +0300258 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259}
260
Alan Coxa509a7e2009-09-19 13:13:26 -0700261static int ir_open(struct tty_struct *tty, struct usb_serial_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262{
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200263 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200265 for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i)
266 port->write_urbs[i]->transfer_flags = URB_ZERO_PACKET;
267
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 /* Start reading from the device */
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200269 return usb_serial_generic_open(tty, port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270}
271
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200272static int ir_prepare_write_buffer(struct usb_serial_port *port,
273 void *dest, size_t size)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274{
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200275 unsigned char *buf = dest;
Johan Hovolde421fe92010-05-19 00:01:34 +0200276 int count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277
278 /*
279 * The first byte of the packet we send to the device contains an
Felipe Balbie0d795e2008-06-03 14:47:52 +0300280 * inbound header which indicates an additional number of BOFs and
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 * a baud rate change.
282 *
283 * See section 5.4.2.2 of the USB IrDA spec.
284 */
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200285 *buf = ir_xbof | ir_baud;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286
Johan Hovolde421fe92010-05-19 00:01:34 +0200287 count = kfifo_out_locked(&port->write_fifo, buf + 1, size - 1,
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200288 &port->lock);
Johan Hovolde421fe92010-05-19 00:01:34 +0200289 return count + 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290}
291
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200292static void ir_process_read_urb(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293{
Ming Leicdc97792008-02-24 18:41:47 +0800294 struct usb_serial_port *port = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 unsigned char *data = urb->transfer_buffer;
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200296 struct tty_struct *tty;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200298 if (!urb->actual_length)
299 return;
300 /*
301 * The first byte of the packet we get from the device
302 * contains a busy indicator and baud rate change.
303 * See section 5.4.1.2 of the USB IrDA spec.
304 */
305 if (*data & 0x0f)
306 ir_baud = *data & 0x0f;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200308 if (urb->actual_length == 1)
309 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
Johan Hovoldf4a4cbb2010-05-13 21:02:03 +0200311 tty = tty_port_tty_get(&port->port);
312 if (!tty)
313 return;
314 tty_insert_flip_string(tty, data + 1, urb->actual_length - 1);
315 tty_flip_buffer_push(tty);
316 tty_kref_put(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317}
318
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200319static void ir_set_termios_callback(struct urb *urb)
320{
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200321 kfree(urb->transfer_buffer);
322
Greg Kroah-Hartmanb9783552012-05-03 16:44:20 -0700323 if (urb->status)
Greg Kroah-Hartman9f857ae2012-05-15 16:27:23 -0700324 dev_dbg(&urb->dev->dev, "%s - non-zero urb status: %d\n",
325 __func__, urb->status);
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200326}
327
Alan Cox95da3102008-07-22 11:09:07 +0100328static void ir_set_termios(struct tty_struct *tty,
329 struct usb_serial_port *port, struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330{
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200331 struct urb *urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 unsigned char *transfer_buffer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 int result;
Alan Coxa6ea4382007-06-22 14:44:54 +0100334 speed_t baud;
335 int ir_baud;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336
Alan Cox95da3102008-07-22 11:09:07 +0100337 baud = tty_get_baud_rate(tty);
Alan Coxa6ea4382007-06-22 14:44:54 +0100338
339 /*
340 * FIXME, we should compare the baud request against the
341 * capability stated in the IR header that we got in the
342 * startup function.
343 */
344
345 switch (baud) {
Felipe Balbie0d795e2008-06-03 14:47:52 +0300346 case 2400:
347 ir_baud = USB_IRDA_BR_2400;
348 break;
349 case 9600:
350 ir_baud = USB_IRDA_BR_9600;
351 break;
352 case 19200:
353 ir_baud = USB_IRDA_BR_19200;
354 break;
355 case 38400:
356 ir_baud = USB_IRDA_BR_38400;
357 break;
358 case 57600:
359 ir_baud = USB_IRDA_BR_57600;
360 break;
361 case 115200:
362 ir_baud = USB_IRDA_BR_115200;
363 break;
364 case 576000:
365 ir_baud = USB_IRDA_BR_576000;
366 break;
367 case 1152000:
368 ir_baud = USB_IRDA_BR_1152000;
369 break;
370 case 4000000:
371 ir_baud = USB_IRDA_BR_4000000;
372 break;
373 default:
374 ir_baud = USB_IRDA_BR_9600;
375 baud = 9600;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 }
377
Alan Coxa6ea4382007-06-22 14:44:54 +0100378 if (xbof == -1)
379 ir_xbof = ir_xbof_change(ir_add_bof);
380 else
381 ir_xbof = ir_xbof_change(xbof) ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382
Alan Cox560aac22007-10-18 01:24:20 -0700383 /* Only speed changes are supported */
Alan Cox95da3102008-07-22 11:09:07 +0100384 tty_termios_copy_hw(tty->termios, old_termios);
385 tty_encode_baud_rate(tty, baud, baud);
Johan Hovolddf66e8a2010-05-13 21:02:02 +0200386
387 /*
388 * send the baud change out on an "empty" data packet
389 */
390 urb = usb_alloc_urb(0, GFP_KERNEL);
391 if (!urb) {
392 dev_err(&port->dev, "%s - no more urbs\n", __func__);
393 return;
394 }
395 transfer_buffer = kmalloc(1, GFP_KERNEL);
396 if (!transfer_buffer) {
397 dev_err(&port->dev, "%s - out of memory\n", __func__);
398 goto err_buf;
399 }
400
401 *transfer_buffer = ir_xbof | ir_baud;
402
403 usb_fill_bulk_urb(
404 urb,
405 port->serial->dev,
406 usb_sndbulkpipe(port->serial->dev,
407 port->bulk_out_endpointAddress),
408 transfer_buffer,
409 1,
410 ir_set_termios_callback,
411 port);
412
413 urb->transfer_flags = URB_ZERO_PACKET;
414
415 result = usb_submit_urb(urb, GFP_KERNEL);
416 if (result) {
417 dev_err(&port->dev, "%s - failed to submit urb: %d\n",
418 __func__, result);
419 goto err_subm;
420 }
421
422 usb_free_urb(urb);
423
424 return;
425err_subm:
426 kfree(transfer_buffer);
427err_buf:
428 usb_free_urb(urb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429}
430
Felipe Balbie0d795e2008-06-03 14:47:52 +0300431static int __init ir_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432{
433 int retval;
Felipe Balbie0d795e2008-06-03 14:47:52 +0300434
Johan Hovold6f6ed692010-05-13 21:02:01 +0200435 if (buffer_size) {
436 ir_device.bulk_in_size = buffer_size;
437 ir_device.bulk_out_size = buffer_size;
438 }
439
Greg Kroah-Hartman68e24112012-05-08 15:46:14 -0700440 retval = usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, ir_id_table);
Alan Stern7dbe2462012-02-23 14:56:57 -0500441 if (retval == 0)
442 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
443 DRIVER_DESC "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 return retval;
445}
446
Felipe Balbie0d795e2008-06-03 14:47:52 +0300447static void __exit ir_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448{
Greg Kroah-Hartman68e24112012-05-08 15:46:14 -0700449 usb_serial_deregister_drivers(serial_drivers);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450}
451
452
453module_init(ir_init);
454module_exit(ir_exit);
455
456MODULE_AUTHOR(DRIVER_AUTHOR);
457MODULE_DESCRIPTION(DRIVER_DESC);
458MODULE_LICENSE("GPL");
459
460module_param(debug, bool, S_IRUGO | S_IWUSR);
461MODULE_PARM_DESC(debug, "Debug enabled or not");
462module_param(xbof, int, 0);
463MODULE_PARM_DESC(xbof, "Force specific number of XBOFs");
464module_param(buffer_size, int, 0);
465MODULE_PARM_DESC(buffer_size, "Size of the transfer buffers");
466