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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[net-next-2.6.git] / drivers / media / IR / mceusb.c
CommitLineData
66e89522
JW		 1/*
2 * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers
3 *
4 * Copyright (c) 2010 by Jarod Wilson <jarod@redhat.com>
5 *
6 * Based on the original lirc_mceusb and lirc_mceusb2 drivers, by Dan
7 * Conti, Martin Blatter and Daniel Melander, the latter of which was
8 * in turn also based on the lirc_atiusb driver by Paul Miller. The
9 * two mce drivers were merged into one by Jarod Wilson, with transmit
10 * support for the 1st-gen device added primarily by Patrick Calhoun,
11 * with a bit of tweaks by Jarod. Debugging improvements and proper
12 * support for what appears to be 3rd-gen hardware added by Jarod.
13 * Initial port from lirc driver to ir-core drivery by Jarod, based
14 * partially on a port to an earlier proposed IR infrastructure by
15 * Jon Smirl, which included enhancements and simplifications to the
16 * incoming IR buffer parsing routines.
17 *
66e89522
JW		 18 *
19 * This program is free software; you can redistribute it and/or modify
20 * it under the terms of the GNU General Public License as published by
21 * the Free Software Foundation; either version 2 of the License, or
22 * (at your option) any later version.
23 *
24 * This program is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program; if not, write to the Free Software
31 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 *
33 */
34
35#include <linux/device.h>
36#include <linux/module.h>
37#include <linux/slab.h>
38#include <linux/usb.h>
39#include <linux/input.h>
40#include <media/ir-core.h>
41#include <media/ir-common.h>
42
43#define DRIVER_VERSION "1.91"
44#define DRIVER_AUTHOR "Jarod Wilson <jarod@wilsonet.com>"
45#define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \
46 "device driver"
47#define DRIVER_NAME "mceusb"
48
49#define USB_BUFLEN 32 /* USB reception buffer length */
657290b6
JW		 50#define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */
51#define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */
66e89522
JW		 52
53/* MCE constants */
54#define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */
55#define MCE_TIME_UNIT 50 /* Approx 50us resolution */
56#define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */
57#define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */
58#define MCE_PACKET_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */
59#define MCE_CONTROL_HEADER 0x9F /* MCE status header */
60#define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */
61#define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */
62#define MCE_DEFAULT_TX_MASK 0x03 /* Val opts: TX1=0x01, TX2=0x02, ALL=0x03 */
63#define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */
64#define MCE_PULSE_MASK 0x7F /* Pulse mask */
65#define MCE_MAX_PULSE_LENGTH 0x7F /* Longest transmittable pulse symbol */
d732a72d 66#define MCE_PACKET_LENGTH_MASK 0x1F /* Packet length mask */
66e89522
JW		 67
68
69/* module parameters */
70#ifdef CONFIG_USB_DEBUG
71static int debug = 1;
72#else
73static int debug;
74#endif
75
76/* general constants */
77#define SEND_FLAG_IN_PROGRESS 1
78#define SEND_FLAG_COMPLETE 2
79#define RECV_FLAG_IN_PROGRESS 3
80#define RECV_FLAG_COMPLETE 4
81
82#define MCEUSB_RX 1
83#define MCEUSB_TX 2
84
85#define VENDOR_PHILIPS 0x0471
86#define VENDOR_SMK 0x0609
87#define VENDOR_TATUNG 0x1460
88#define VENDOR_GATEWAY 0x107b
89#define VENDOR_SHUTTLE 0x1308
90#define VENDOR_SHUTTLE2 0x051c
91#define VENDOR_MITSUMI 0x03ee
92#define VENDOR_TOPSEED 0x1784
93#define VENDOR_RICAVISION 0x179d
94#define VENDOR_ITRON 0x195d
95#define VENDOR_FIC 0x1509
96#define VENDOR_LG 0x043e
97#define VENDOR_MICROSOFT 0x045e
98#define VENDOR_FORMOSA 0x147a
99#define VENDOR_FINTEK 0x1934
100#define VENDOR_PINNACLE 0x2304
101#define VENDOR_ECS 0x1019
102#define VENDOR_WISTRON 0x0fb8
103#define VENDOR_COMPRO 0x185b
104#define VENDOR_NORTHSTAR 0x04eb
105#define VENDOR_REALTEK 0x0bda
106#define VENDOR_TIVO 0x105a
107
108static struct usb_device_id mceusb_dev_table[] = {
109 /* Original Microsoft MCE IR Transceiver (often HP-branded) */
110 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
111 /* Philips Infrared Transceiver - Sahara branded */
112 { USB_DEVICE(VENDOR_PHILIPS, 0x0608) },
113 /* Philips Infrared Transceiver - HP branded */
114 { USB_DEVICE(VENDOR_PHILIPS, 0x060c) },
115 /* Philips SRM5100 */
116 { USB_DEVICE(VENDOR_PHILIPS, 0x060d) },
117 /* Philips Infrared Transceiver - Omaura */
118 { USB_DEVICE(VENDOR_PHILIPS, 0x060f) },
119 /* Philips Infrared Transceiver - Spinel plus */
120 { USB_DEVICE(VENDOR_PHILIPS, 0x0613) },
121 /* Philips eHome Infrared Transceiver */
122 { USB_DEVICE(VENDOR_PHILIPS, 0x0815) },
c13df9cf
JW		 123 /* Philips/Spinel plus IR transceiver for ASUS */
124 { USB_DEVICE(VENDOR_PHILIPS, 0x206c) },
125 /* Philips/Spinel plus IR transceiver for ASUS */
126 { USB_DEVICE(VENDOR_PHILIPS, 0x2088) },
66e89522
JW		 127 /* Realtek MCE IR Receiver */
128 { USB_DEVICE(VENDOR_REALTEK, 0x0161) },
129 /* SMK/Toshiba G83C0004D410 */
130 { USB_DEVICE(VENDOR_SMK, 0x031d) },
131 /* SMK eHome Infrared Transceiver (Sony VAIO) */
132 { USB_DEVICE(VENDOR_SMK, 0x0322) },
133 /* bundled with Hauppauge PVR-150 */
134 { USB_DEVICE(VENDOR_SMK, 0x0334) },
135 /* SMK eHome Infrared Transceiver */
136 { USB_DEVICE(VENDOR_SMK, 0x0338) },
137 /* Tatung eHome Infrared Transceiver */
138 { USB_DEVICE(VENDOR_TATUNG, 0x9150) },
139 /* Shuttle eHome Infrared Transceiver */
140 { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) },
141 /* Shuttle eHome Infrared Transceiver */
142 { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) },
143 /* Gateway eHome Infrared Transceiver */
144 { USB_DEVICE(VENDOR_GATEWAY, 0x3009) },
145 /* Mitsumi */
146 { USB_DEVICE(VENDOR_MITSUMI, 0x2501) },
147 /* Topseed eHome Infrared Transceiver */
148 { USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
149 /* Topseed HP eHome Infrared Transceiver */
150 { USB_DEVICE(VENDOR_TOPSEED, 0x0006) },
151 /* Topseed eHome Infrared Transceiver */
152 { USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
153 /* Topseed eHome Infrared Transceiver */
154 { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
155 /* Topseed eHome Infrared Transceiver */
156 { USB_DEVICE(VENDOR_TOPSEED, 0x000a) },
157 /* Topseed eHome Infrared Transceiver */
158 { USB_DEVICE(VENDOR_TOPSEED, 0x0011) },
159 /* Ricavision internal Infrared Transceiver */
160 { USB_DEVICE(VENDOR_RICAVISION, 0x0010) },
161 /* Itron ione Libra Q-11 */
162 { USB_DEVICE(VENDOR_ITRON, 0x7002) },
163 /* FIC eHome Infrared Transceiver */
164 { USB_DEVICE(VENDOR_FIC, 0x9242) },
165 /* LG eHome Infrared Transceiver */
166 { USB_DEVICE(VENDOR_LG, 0x9803) },
167 /* Microsoft MCE Infrared Transceiver */
168 { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) },
169 /* Formosa eHome Infrared Transceiver */
170 { USB_DEVICE(VENDOR_FORMOSA, 0xe015) },
171 /* Formosa21 / eHome Infrared Receiver */
172 { USB_DEVICE(VENDOR_FORMOSA, 0xe016) },
173 /* Formosa aim / Trust MCE Infrared Receiver */
174 { USB_DEVICE(VENDOR_FORMOSA, 0xe017) },
175 /* Formosa Industrial Computing / Beanbag Emulation Device */
176 { USB_DEVICE(VENDOR_FORMOSA, 0xe018) },
177 /* Formosa21 / eHome Infrared Receiver */
178 { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) },
179 /* Formosa Industrial Computing AIM IR605/A */
180 { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) },
181 /* Formosa Industrial Computing */
182 { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) },
183 /* Fintek eHome Infrared Transceiver */
184 { USB_DEVICE(VENDOR_FINTEK, 0x0602) },
185 /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */
186 { USB_DEVICE(VENDOR_FINTEK, 0x0702) },
187 /* Pinnacle Remote Kit */
188 { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
189 /* Elitegroup Computer Systems IR */
190 { USB_DEVICE(VENDOR_ECS, 0x0f38) },
191 /* Wistron Corp. eHome Infrared Receiver */
192 { USB_DEVICE(VENDOR_WISTRON, 0x0002) },
193 /* Compro K100 */
194 { USB_DEVICE(VENDOR_COMPRO, 0x3020) },
195 /* Compro K100 v2 */
196 { USB_DEVICE(VENDOR_COMPRO, 0x3082) },
197 /* Northstar Systems, Inc. eHome Infrared Transceiver */
198 { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) },
199 /* TiVo PC IR Receiver */
200 { USB_DEVICE(VENDOR_TIVO, 0x2000) },
201 /* Terminating entry */
202 { }
203};
204
205static struct usb_device_id gen3_list[] = {
206 { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
207 { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
208 {}
209};
210
66e89522
JW		 211static struct usb_device_id microsoft_gen1_list[] = {
212 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
213 {}
214};
215
657290b6
JW		 216static struct usb_device_id std_tx_mask_list[] = {
217 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
218 { USB_DEVICE(VENDOR_PHILIPS, 0x060c) },
219 { USB_DEVICE(VENDOR_SMK, 0x031d) },
220 { USB_DEVICE(VENDOR_SMK, 0x0322) },
221 { USB_DEVICE(VENDOR_SMK, 0x0334) },
222 { USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
223 { USB_DEVICE(VENDOR_TOPSEED, 0x0006) },
224 { USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
225 { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
226 { USB_DEVICE(VENDOR_TOPSEED, 0x000a) },
227 { USB_DEVICE(VENDOR_TOPSEED, 0x0011) },
228 { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
229 {}
230};
231
66e89522
JW		 232/* data structure for each usb transceiver */
233struct mceusb_dev {
234 /* ir-core bits */
66e89522 235 struct ir_dev_props *props;
66e89522
JW		 236 struct ir_raw_event rawir;
237
238 /* core device bits */
239 struct device *dev;
240 struct input_dev *idev;
241
242 /* usb */
243 struct usb_device *usbdev;
244 struct urb *urb_in;
245 struct usb_endpoint_descriptor *usb_ep_in;
246 struct usb_endpoint_descriptor *usb_ep_out;
247
248 /* buffers and dma */
249 unsigned char *buf_in;
250 unsigned int len_in;
251 u8 cmd; /* MCE command type */
252 u8 rem; /* Remaining IR data bytes in packet */
253 dma_addr_t dma_in;
254 dma_addr_t dma_out;
255
256 struct {
257 u32 connected:1;
657290b6 258 u32 tx_mask_inverted:1;
66e89522 259 u32 microsoft_gen1:1;
22b0766b 260 u32 reserved:29;
66e89522
JW		 261 } flags;
262
e23fb964 263 /* transmit support */
66e89522 264 int send_flags;
e23fb964
JW		 265 u32 carrier;
266 unsigned char tx_mask;
66e89522
JW		 267
268 char name[128];
269 char phys[64];
66e89522
JW		 270};
271
272/*
273 * MCE Device Command Strings
274 * Device command responses vary from device to device...
275 * - DEVICE_RESET resets the hardware to its default state
276 * - GET_REVISION fetches the hardware/software revision, common
277 * replies are ff 0b 45 ff 1b 08 and ff 0b 50 ff 1b 42
278 * - GET_CARRIER_FREQ gets the carrier mode and frequency of the
279 * device, with replies in the form of 9f 06 MM FF, where MM is 0-3,
280 * meaning clk of 10000000, 2500000, 625000 or 156250, and FF is
281 * ((clk / frequency) - 1)
282 * - GET_RX_TIMEOUT fetches the receiver timeout in units of 50us,
283 * response in the form of 9f 0c msb lsb
284 * - GET_TX_BITMASK fetches the transmitter bitmask, replies in
285 * the form of 9f 08 bm, where bm is the bitmask
286 * - GET_RX_SENSOR fetches the RX sensor setting -- long-range
287 * general use one or short-range learning one, in the form of
288 * 9f 14 ss, where ss is either 01 for long-range or 02 for short
289 * - SET_CARRIER_FREQ sets a new carrier mode and frequency
290 * - SET_TX_BITMASK sets the transmitter bitmask
291 * - SET_RX_TIMEOUT sets the receiver timeout
292 * - SET_RX_SENSOR sets which receiver sensor to use
293 */
294static char DEVICE_RESET[] = {0x00, 0xff, 0xaa};
295static char GET_REVISION[] = {0xff, 0x0b};
296static char GET_UNKNOWN[] = {0xff, 0x18};
22b0766b 297static char GET_UNKNOWN2[] = {0x9f, 0x05};
66e89522
JW		 298static char GET_CARRIER_FREQ[] = {0x9f, 0x07};
299static char GET_RX_TIMEOUT[] = {0x9f, 0x0d};
300static char GET_TX_BITMASK[] = {0x9f, 0x13};
301static char GET_RX_SENSOR[] = {0x9f, 0x15};
302/* sub in desired values in lower byte or bytes for full command */
303/* FIXME: make use of these for transmit.
304static char SET_CARRIER_FREQ[] = {0x9f, 0x06, 0x00, 0x00};
305static char SET_TX_BITMASK[] = {0x9f, 0x08, 0x00};
306static char SET_RX_TIMEOUT[] = {0x9f, 0x0c, 0x00, 0x00};
307static char SET_RX_SENSOR[] = {0x9f, 0x14, 0x00};
308*/
309
310static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf,
311 int len, bool out)
312{
313 char codes[USB_BUFLEN * 3 + 1];
314 char inout[9];
315 int i;
316 u8 cmd, subcmd, data1, data2;
317 struct device *dev = ir->dev;
657290b6 318 int idx = 0;
66e89522 319
657290b6
JW		 320 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
321 if (ir->flags.microsoft_gen1 && !out)
322 idx = 2;
66e89522 323
657290b6 324 if (len <= idx)
66e89522
JW		 325 return;
326
327 for (i = 0; i < len && i < USB_BUFLEN; i++)
328 snprintf(codes + i * 3, 4, "%02x ", buf[i] & 0xFF);
329
330 dev_info(dev, "%sx data: %s (length=%d)\n",
331 (out ? "t" : "r"), codes, len);
332
333 if (out)
334 strcpy(inout, "Request\0");
335 else
336 strcpy(inout, "Got\0");
337
657290b6
JW		 338 cmd = buf[idx] & 0xff;
339 subcmd = buf[idx + 1] & 0xff;
340 data1 = buf[idx + 2] & 0xff;
341 data2 = buf[idx + 3] & 0xff;
66e89522
JW		 342
343 switch (cmd) {
344 case 0x00:
345 if (subcmd == 0xff && data1 == 0xaa)
346 dev_info(dev, "Device reset requested\n");
347 else
348 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
349 cmd, subcmd);
350 break;
351 case 0xff:
352 switch (subcmd) {
353 case 0x0b:
354 if (len == 2)
355 dev_info(dev, "Get hw/sw rev?\n");
356 else
357 dev_info(dev, "hw/sw rev 0x%02x 0x%02x "
358 "0x%02x 0x%02x\n", data1, data2,
657290b6 359 buf[idx + 4], buf[idx + 5]);
66e89522
JW		 360 break;
361 case 0xaa:
362 dev_info(dev, "Device reset requested\n");
363 break;
364 case 0xfe:
365 dev_info(dev, "Previous command not supported\n");
366 break;
367 case 0x18:
368 case 0x1b:
369 default:
370 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
371 cmd, subcmd);
372 break;
373 }
374 break;
375 case 0x9f:
376 switch (subcmd) {
377 case 0x03:
378 dev_info(dev, "Ping\n");
379 break;
380 case 0x04:
381 dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n",
382 data1, data2);
383 break;
384 case 0x06:
385 dev_info(dev, "%s carrier mode and freq of "
386 "0x%02x 0x%02x\n", inout, data1, data2);
387 break;
388 case 0x07:
389 dev_info(dev, "Get carrier mode and freq\n");
390 break;
391 case 0x08:
392 dev_info(dev, "%s transmit blaster mask of 0x%02x\n",
393 inout, data1);
394 break;
395 case 0x0c:
396 /* value is in units of 50us, so x*50/100 or x/2 ms */
397 dev_info(dev, "%s receive timeout of %d ms\n",
398 inout, ((data1 << 8) | data2) / 2);
399 break;
400 case 0x0d:
401 dev_info(dev, "Get receive timeout\n");
402 break;
403 case 0x13:
404 dev_info(dev, "Get transmit blaster mask\n");
405 break;
406 case 0x14:
407 dev_info(dev, "%s %s-range receive sensor in use\n",
408 inout, data1 == 0x02 ? "short" : "long");
409 break;
410 case 0x15:
411 if (len == 2)
412 dev_info(dev, "Get receive sensor\n");
413 else
414 dev_info(dev, "Received pulse count is %d\n",
415 ((data1 << 8) | data2));
416 break;
417 case 0xfe:
418 dev_info(dev, "Error! Hardware is likely wedged...\n");
419 break;
420 case 0x05:
421 case 0x09:
422 case 0x0f:
423 default:
424 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
425 cmd, subcmd);
426 break;
427 }
428 break;
429 default:
430 break;
431 }
432}
433
7c294402 434static void mce_async_callback(struct urb *urb, struct pt_regs *regs)
66e89522
JW		 435{
436 struct mceusb_dev *ir;
437 int len;
438
439 if (!urb)
440 return;
441
442 ir = urb->context;
443 if (ir) {
444 len = urb->actual_length;
445
446 dev_dbg(ir->dev, "callback called (status=%d len=%d)\n",
447 urb->status, len);
448
449 if (debug)
450 mceusb_dev_printdata(ir, urb->transfer_buffer,
451 len, true);
452 }
453
454}
455
456/* request incoming or send outgoing usb packet - used to initialize remote */
457static void mce_request_packet(struct mceusb_dev *ir,
458 struct usb_endpoint_descriptor *ep,
459 unsigned char *data, int size, int urb_type)
460{
461 int res;
462 struct urb *async_urb;
463 struct device *dev = ir->dev;
464 unsigned char *async_buf;
465
466 if (urb_type == MCEUSB_TX) {
467 async_urb = usb_alloc_urb(0, GFP_KERNEL);
468 if (unlikely(!async_urb)) {
469 dev_err(dev, "Error, couldn't allocate urb!\n");
470 return;
471 }
472
473 async_buf = kzalloc(size, GFP_KERNEL);
474 if (!async_buf) {
475 dev_err(dev, "Error, couldn't allocate buf!\n");
476 usb_free_urb(async_urb);
477 return;
478 }
479
480 /* outbound data */
481 usb_fill_int_urb(async_urb, ir->usbdev,
482 usb_sndintpipe(ir->usbdev, ep->bEndpointAddress),
7c294402 483 async_buf, size, (usb_complete_t)mce_async_callback,
66e89522
JW		 484 ir, ep->bInterval);
485 memcpy(async_buf, data, size);
486
487 } else if (urb_type == MCEUSB_RX) {
488 /* standard request */
489 async_urb = ir->urb_in;
490 ir->send_flags = RECV_FLAG_IN_PROGRESS;
491
492 } else {
493 dev_err(dev, "Error! Unknown urb type %d\n", urb_type);
494 return;
495 }
496
497 dev_dbg(dev, "receive request called (size=%#x)\n", size);
498
499 async_urb->transfer_buffer_length = size;
500 async_urb->dev = ir->usbdev;
501
502 res = usb_submit_urb(async_urb, GFP_ATOMIC);
503 if (res) {
504 dev_dbg(dev, "receive request FAILED! (res=%d)\n", res);
505 return;
506 }
507 dev_dbg(dev, "receive request complete (res=%d)\n", res);
508}
509
510static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size)
511{
512 mce_request_packet(ir, ir->usb_ep_out, data, size, MCEUSB_TX);
513}
514
515static void mce_sync_in(struct mceusb_dev *ir, unsigned char *data, int size)
516{
517 mce_request_packet(ir, ir->usb_ep_in, data, size, MCEUSB_RX);
518}
519
e23fb964
JW		 520/* Send data out the IR blaster port(s) */
521static int mceusb_tx_ir(void *priv, int *txbuf, u32 n)
522{
523 struct mceusb_dev *ir = priv;
524 int i, ret = 0;
525 int count, cmdcount = 0;
526 unsigned char *cmdbuf; /* MCE command buffer */
527 long signal_duration = 0; /* Singnal length in us */
528 struct timeval start_time, end_time;
529
530 do_gettimeofday(&start_time);
531
532 count = n / sizeof(int);
533
534 cmdbuf = kzalloc(sizeof(int) * MCE_CMDBUF_SIZE, GFP_KERNEL);
535 if (!cmdbuf)
536 return -ENOMEM;
537
538 /* MCE tx init header */
539 cmdbuf[cmdcount++] = MCE_CONTROL_HEADER;
540 cmdbuf[cmdcount++] = 0x08;
541 cmdbuf[cmdcount++] = ir->tx_mask;
542
543 /* Generate mce packet data */
544 for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) {
545 signal_duration += txbuf[i];
546 txbuf[i] = txbuf[i] / MCE_TIME_UNIT;
547
548 do { /* loop to support long pulses/spaces > 127*50us=6.35ms */
549
550 /* Insert mce packet header every 4th entry */
551 if ((cmdcount < MCE_CMDBUF_SIZE) &&
552 (cmdcount - MCE_TX_HEADER_LENGTH) %
553 MCE_CODE_LENGTH == 0)
554 cmdbuf[cmdcount++] = MCE_PACKET_HEADER;
555
556 /* Insert mce packet data */
557 if (cmdcount < MCE_CMDBUF_SIZE)
558 cmdbuf[cmdcount++] =
559 (txbuf[i] < MCE_PULSE_BIT ?
560 txbuf[i] : MCE_MAX_PULSE_LENGTH) |
561 (i & 1 ? 0x00 : MCE_PULSE_BIT);
562 else {
563 ret = -EINVAL;
564 goto out;
565 }
566
567 } while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) &&
568 (txbuf[i] -= MCE_MAX_PULSE_LENGTH));
569 }
570
571 /* Fix packet length in last header */
572 cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] =
573 0x80 + (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH - 1;
574
575 /* Check if we have room for the empty packet at the end */
576 if (cmdcount >= MCE_CMDBUF_SIZE) {
577 ret = -EINVAL;
578 goto out;
579 }
580
581 /* All mce commands end with an empty packet (0x80) */
582 cmdbuf[cmdcount++] = 0x80;
583
584 /* Transmit the command to the mce device */
585 mce_async_out(ir, cmdbuf, cmdcount);
586
587 /*
588 * The lircd gap calculation expects the write function to
589 * wait the time it takes for the ircommand to be sent before
590 * it returns.
591 */
592 do_gettimeofday(&end_time);
593 signal_duration -= (end_time.tv_usec - start_time.tv_usec) +
594 (end_time.tv_sec - start_time.tv_sec) * 1000000;
595
596 /* delay with the closest number of ticks */
597 set_current_state(TASK_INTERRUPTIBLE);
598 schedule_timeout(usecs_to_jiffies(signal_duration));
599
600out:
601 kfree(cmdbuf);
602 return ret ? ret : n;
603}
604
657290b6
JW		 605/* Sets active IR outputs -- mce devices typically (all?) have two */
606static int mceusb_set_tx_mask(void *priv, u32 mask)
607{
608 struct mceusb_dev *ir = priv;
609
610 if (ir->flags.tx_mask_inverted)
611 ir->tx_mask = (mask != 0x03 ? mask ^ 0x03 : mask) << 1;
612 else
613 ir->tx_mask = mask;
614
615 return 0;
616}
617
e23fb964
JW		 618/* Sets the send carrier frequency and mode */
619static int mceusb_set_tx_carrier(void *priv, u32 carrier)
620{
621 struct mceusb_dev *ir = priv;
622 int clk = 10000000;
623 int prescaler = 0, divisor = 0;
624 unsigned char cmdbuf[4] = { 0x9f, 0x06, 0x00, 0x00 };
625
626 /* Carrier has changed */
627 if (ir->carrier != carrier) {
628
629 if (carrier == 0) {
630 ir->carrier = carrier;
631 cmdbuf[2] = 0x01;
632 cmdbuf[3] = 0x80;
633 dev_dbg(ir->dev, "%s: disabling carrier "
634 "modulation\n", __func__);
635 mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
636 return carrier;
637 }
638
639 for (prescaler = 0; prescaler < 4; ++prescaler) {
640 divisor = (clk >> (2 * prescaler)) / carrier;
641 if (divisor <= 0xFF) {
642 ir->carrier = carrier;
643 cmdbuf[2] = prescaler;
644 cmdbuf[3] = divisor;
645 dev_dbg(ir->dev, "%s: requesting %u HZ "
646 "carrier\n", __func__, carrier);
647
648 /* Transmit new carrier to mce device */
649 mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
650 return carrier;
651 }
652 }
653
654 return -EINVAL;
655
656 }
657
658 return carrier;
659}
660
66e89522
JW		 661static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
662{
663 struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
664 int i, start_index = 0;
d732a72d 665 u8 hdr = MCE_CONTROL_HEADER;
66e89522
JW		 666
667 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
668 if (ir->flags.microsoft_gen1)
669 start_index = 2;
670
671 for (i = start_index; i < buf_len;) {
672 if (ir->rem == 0) {
673 /* decode mce packets of the form (84),AA,BB,CC,DD */
674 /* IR data packets can span USB messages - rem */
d732a72d
JW		 675 hdr = ir->buf_in[i];
676 ir->rem = (hdr & MCE_PACKET_LENGTH_MASK);
677 ir->cmd = (hdr & ~MCE_PACKET_LENGTH_MASK);
66e89522
JW		 678 dev_dbg(ir->dev, "New data. rem: 0x%02x, cmd: 0x%02x\n",
679 ir->rem, ir->cmd);
680 i++;
681 }
682
d732a72d
JW		 683 /* don't process MCE commands */
684 if (hdr == MCE_CONTROL_HEADER || hdr == 0xff) {
66e89522
JW		 685 ir->rem = 0;
686 return;
687 }
688
689 for (; (ir->rem > 0) && (i < buf_len); i++) {
690 ir->rem--;
691
692 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);
693 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK)
694 * MCE_TIME_UNIT * 1000;
695
696 if ((ir->buf_in[i] & MCE_PULSE_MASK) == 0x7f) {
697 if (ir->rawir.pulse == rawir.pulse)
698 ir->rawir.duration += rawir.duration;
699 else {
700 ir->rawir.duration = rawir.duration;
701 ir->rawir.pulse = rawir.pulse;
702 }
703 continue;
704 }
705 rawir.duration += ir->rawir.duration;
706 ir->rawir.duration = 0;
707 ir->rawir.pulse = rawir.pulse;
708
709 dev_dbg(ir->dev, "Storing %s with duration %d\n",
710 rawir.pulse ? "pulse" : "space",
711 rawir.duration);
712
713 ir_raw_event_store(ir->idev, &rawir);
714 }
715
716 if (ir->buf_in[i] == 0x80 || ir->buf_in[i] == 0x9f)
717 ir->rem = 0;
718
719 dev_dbg(ir->dev, "calling ir_raw_event_handle\n");
720 ir_raw_event_handle(ir->idev);
721 }
722}
723
66e89522
JW		 724static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs)
725{
726 struct mceusb_dev *ir;
727 int buf_len;
728
729 if (!urb)
730 return;
731
732 ir = urb->context;
733 if (!ir) {
734 usb_unlink_urb(urb);
735 return;
736 }
737
738 buf_len = urb->actual_length;
739
66e89522
JW		 740 if (debug)
741 mceusb_dev_printdata(ir, urb->transfer_buffer, buf_len, false);
742
743 if (ir->send_flags == RECV_FLAG_IN_PROGRESS) {
744 ir->send_flags = SEND_FLAG_COMPLETE;
7a9fcb41 745 dev_dbg(ir->dev, "setup answer received %d bytes\n",
66e89522
JW		 746 buf_len);
747 }
748
749 switch (urb->status) {
750 /* success */
751 case 0:
752 mceusb_process_ir_data(ir, buf_len);
753 break;
754
755 case -ECONNRESET:
756 case -ENOENT:
757 case -ESHUTDOWN:
758 usb_unlink_urb(urb);
759 return;
760
761 case -EPIPE:
762 default:
763 break;
764 }
765
766 usb_submit_urb(urb, GFP_ATOMIC);
767}
768
769static void mceusb_gen1_init(struct mceusb_dev *ir)
770{
ca17a4f0 771 int ret;
22b0766b 772 int maxp = ir->len_in;
66e89522 773 struct device *dev = ir->dev;
b48592e4 774 char *data;
657290b6
JW		 775
776 data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL);
777 if (!data) {
778 dev_err(dev, "%s: memory allocation failed!\n", __func__);
657290b6
JW		 779 return;
780 }
66e89522
JW		 781
782 /*
b48592e4 783 * This is a strange one. Windows issues a set address to the device
66e89522
JW		 784 * on the receive control pipe and expect a certain value pair back
785 */
66e89522
JW		 786 ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
787 USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
657290b6 788 data, USB_CTRL_MSG_SZ, HZ * 3);
66e89522
JW		 789 dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
790 dev_dbg(dev, "%s - data[0] = %d, data[1] = %d\n",
791 __func__, data[0], data[1]);
792
793 /* set feature: bit rate 38400 bps */
794 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
795 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
796 0xc04e, 0x0000, NULL, 0, HZ * 3);
797
798 dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
799
800 /* bRequest 4: set char length to 8 bits */
801 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
802 4, USB_TYPE_VENDOR,
803 0x0808, 0x0000, NULL, 0, HZ * 3);
804 dev_dbg(dev, "%s - retB = %d\n", __func__, ret);
805
806 /* bRequest 2: set handshaking to use DTR/DSR */
807 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
808 2, USB_TYPE_VENDOR,
809 0x0000, 0x0100, NULL, 0, HZ * 3);
810 dev_dbg(dev, "%s - retC = %d\n", __func__, ret);
657290b6 811
22b0766b
JW		 812 /* device reset */
813 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
814 mce_sync_in(ir, NULL, maxp);
815
816 /* get hw/sw revision? */
817 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
818 mce_sync_in(ir, NULL, maxp);
819
657290b6 820 kfree(data);
66e89522
JW		 821};
822
823static void mceusb_gen2_init(struct mceusb_dev *ir)
824{
825 int maxp = ir->len_in;
826
66e89522
JW		 827 /* device reset */
828 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
829 mce_sync_in(ir, NULL, maxp);
830
831 /* get hw/sw revision? */
832 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
833 mce_sync_in(ir, NULL, maxp);
834
22b0766b 835 /* unknown what the next two actually return... */
66e89522
JW		 836 mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN));
837 mce_sync_in(ir, NULL, maxp);
22b0766b
JW		 838 mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2));
839 mce_sync_in(ir, NULL, maxp);
66e89522
JW		 840}
841
22b0766b 842static void mceusb_get_parameters(struct mceusb_dev *ir)
66e89522
JW		 843{
844 int maxp = ir->len_in;
845
66e89522
JW		 846 /* get the carrier and frequency */
847 mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));
848 mce_sync_in(ir, NULL, maxp);
849
850 /* get the transmitter bitmask */
851 mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
852 mce_sync_in(ir, NULL, maxp);
853
854 /* get receiver timeout value */
855 mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
856 mce_sync_in(ir, NULL, maxp);
857
858 /* get receiver sensor setting */
859 mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));
860 mce_sync_in(ir, NULL, maxp);
861}
862
863static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir)
864{
865 struct input_dev *idev;
866 struct ir_dev_props *props;
66e89522
JW		 867 struct device *dev = ir->dev;
868 int ret = -ENODEV;
869
870 idev = input_allocate_device();
871 if (!idev) {
872 dev_err(dev, "remote input dev allocation failed\n");
873 goto idev_alloc_failed;
874 }
875
876 ret = -ENOMEM;
877 props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL);
878 if (!props) {
879 dev_err(dev, "remote ir dev props allocation failed\n");
880 goto props_alloc_failed;
881 }
882
e23fb964 883 snprintf(ir->name, sizeof(ir->name), "Media Center Ed. eHome "
66e89522
JW		 884 "Infrared Remote Transceiver (%04x:%04x)",
885 le16_to_cpu(ir->usbdev->descriptor.idVendor),
886 le16_to_cpu(ir->usbdev->descriptor.idProduct));
887
66e89522 888 idev->name = ir->name;
66e89522
JW		 889 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));
890 strlcat(ir->phys, "/input0", sizeof(ir->phys));
891 idev->phys = ir->phys;
892
66e89522
JW		 893 props->priv = ir;
894 props->driver_type = RC_DRIVER_IR_RAW;
895 props->allowed_protos = IR_TYPE_ALL;
e23fb964
JW		 896 props->s_tx_mask = mceusb_set_tx_mask;
897 props->s_tx_carrier = mceusb_set_tx_carrier;
898 props->tx_ir = mceusb_tx_ir;
66e89522
JW		 899
900 ir->props = props;
66e89522
JW		 901
902 ret = ir_input_register(idev, RC_MAP_RC6_MCE, props, DRIVER_NAME);
903 if (ret < 0) {
904 dev_err(dev, "remote input device register failed\n");
905 goto irdev_failed;
906 }
907
908 return idev;
909
910irdev_failed:
66e89522
JW		 911 kfree(props);
912props_alloc_failed:
913 input_free_device(idev);
914idev_alloc_failed:
915 return NULL;
916}
917
918static int __devinit mceusb_dev_probe(struct usb_interface *intf,
919 const struct usb_device_id *id)
920{
921 struct usb_device *dev = interface_to_usbdev(intf);
922 struct usb_host_interface *idesc;
923 struct usb_endpoint_descriptor *ep = NULL;
924 struct usb_endpoint_descriptor *ep_in = NULL;
925 struct usb_endpoint_descriptor *ep_out = NULL;
66e89522 926 struct mceusb_dev *ir = NULL;
d732a72d 927 int pipe, maxp, i;
66e89522
JW		 928 char buf[63], name[128] = "";
929 bool is_gen3;
930 bool is_microsoft_gen1;
657290b6 931 bool tx_mask_inverted;
66e89522
JW		 932
933 dev_dbg(&intf->dev, ": %s called\n", __func__);
934
66e89522
JW		 935 idesc = intf->cur_altsetting;
936
937 is_gen3 = usb_match_id(intf, gen3_list) ? 1 : 0;
938 is_microsoft_gen1 = usb_match_id(intf, microsoft_gen1_list) ? 1 : 0;
657290b6 939 tx_mask_inverted = usb_match_id(intf, std_tx_mask_list) ? 0 : 1;
66e89522
JW		 940
941 /* step through the endpoints to find first bulk in and out endpoint */
942 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {
943 ep = &idesc->endpoint[i].desc;
944
945 if ((ep_in == NULL)
946 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
947 == USB_DIR_IN)
948 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
949 == USB_ENDPOINT_XFER_BULK)
950 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
951 == USB_ENDPOINT_XFER_INT))) {
952
66e89522
JW		 953 ep_in = ep;
954 ep_in->bmAttributes = USB_ENDPOINT_XFER_INT;
d732a72d
JW		 955 ep_in->bInterval = 1;
956 dev_dbg(&intf->dev, ": acceptable inbound endpoint "
957 "found\n");
66e89522
JW		 958 }
959
960 if ((ep_out == NULL)
961 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
962 == USB_DIR_OUT)
963 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
964 == USB_ENDPOINT_XFER_BULK)
965 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
966 == USB_ENDPOINT_XFER_INT))) {
967
66e89522
JW		 968 ep_out = ep;
969 ep_out->bmAttributes = USB_ENDPOINT_XFER_INT;
d732a72d
JW		 970 ep_out->bInterval = 1;
971 dev_dbg(&intf->dev, ": acceptable outbound endpoint "
972 "found\n");
66e89522
JW		 973 }
974 }
975 if (ep_in == NULL) {
976 dev_dbg(&intf->dev, ": inbound and/or endpoint not found\n");
977 return -ENODEV;
978 }
979
980 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
981 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
982
983 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
984 if (!ir)
985 goto mem_alloc_fail;
986
987 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in);
988 if (!ir->buf_in)
989 goto buf_in_alloc_fail;
990
991 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
992 if (!ir->urb_in)
993 goto urb_in_alloc_fail;
994
995 ir->usbdev = dev;
996 ir->dev = &intf->dev;
997 ir->len_in = maxp;
66e89522 998 ir->flags.microsoft_gen1 = is_microsoft_gen1;
657290b6 999 ir->flags.tx_mask_inverted = tx_mask_inverted;
66e89522
JW		 1000
1001 /* Saving usb interface data for use by the transmitter routine */
1002 ir->usb_ep_in = ep_in;
1003 ir->usb_ep_out = ep_out;
1004
1005 if (dev->descriptor.iManufacturer
1006 && usb_string(dev, dev->descriptor.iManufacturer,
1007 buf, sizeof(buf)) > 0)
1008 strlcpy(name, buf, sizeof(name));
1009 if (dev->descriptor.iProduct
1010 && usb_string(dev, dev->descriptor.iProduct,
1011 buf, sizeof(buf)) > 0)
1012 snprintf(name + strlen(name), sizeof(name) - strlen(name),
1013 " %s", buf);
1014
1015 ir->idev = mceusb_init_input_dev(ir);
1016 if (!ir->idev)
1017 goto input_dev_fail;
1018
b48592e4
JW		 1019 /* flush buffers on the device */
1020 mce_sync_in(ir, NULL, maxp);
1021 mce_sync_in(ir, NULL, maxp);
1022
1023 /* wire up inbound data handler */
66e89522
JW		 1024 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in,
1025 maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval);
1026 ir->urb_in->transfer_dma = ir->dma_in;
1027 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1028
66e89522 1029 /* initialize device */
22b0766b 1030 if (ir->flags.microsoft_gen1)
66e89522 1031 mceusb_gen1_init(ir);
22b0766b 1032 else if (!is_gen3)
66e89522
JW		 1033 mceusb_gen2_init(ir);
1034
22b0766b 1035 mceusb_get_parameters(ir);
66e89522 1036
657290b6 1037 mceusb_set_tx_mask(ir, MCE_DEFAULT_TX_MASK);
66e89522
JW		 1038
1039 usb_set_intfdata(intf, ir);
1040
1041 dev_info(&intf->dev, "Registered %s on usb%d:%d\n", name,
1042 dev->bus->busnum, dev->devnum);
1043
1044 return 0;
1045
1046 /* Error-handling path */
1047input_dev_fail:
1048 usb_free_urb(ir->urb_in);
1049urb_in_alloc_fail:
1050 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in);
1051buf_in_alloc_fail:
1052 kfree(ir);
1053mem_alloc_fail:
1054 dev_err(&intf->dev, "%s: device setup failed!\n", __func__);
1055
1056 return -ENOMEM;
1057}
1058
1059
1060static void __devexit mceusb_dev_disconnect(struct usb_interface *intf)
1061{
1062 struct usb_device *dev = interface_to_usbdev(intf);
1063 struct mceusb_dev *ir = usb_get_intfdata(intf);
1064
1065 usb_set_intfdata(intf, NULL);
1066
1067 if (!ir)
1068 return;
1069
1070 ir->usbdev = NULL;
bd3881b1 1071 ir_input_unregister(ir->idev);
66e89522
JW		 1072 usb_kill_urb(ir->urb_in);
1073 usb_free_urb(ir->urb_in);
1074 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);
1075
1076 kfree(ir);
1077}
1078
1079static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message)
1080{
1081 struct mceusb_dev *ir = usb_get_intfdata(intf);
1082 dev_info(ir->dev, "suspend\n");
1083 usb_kill_urb(ir->urb_in);
1084 return 0;
1085}
1086
1087static int mceusb_dev_resume(struct usb_interface *intf)
1088{
1089 struct mceusb_dev *ir = usb_get_intfdata(intf);
1090 dev_info(ir->dev, "resume\n");
1091 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))
1092 return -EIO;
1093 return 0;
1094}
1095
1096static struct usb_driver mceusb_dev_driver = {
1097 .name = DRIVER_NAME,
1098 .probe = mceusb_dev_probe,
1099 .disconnect = mceusb_dev_disconnect,
1100 .suspend = mceusb_dev_suspend,
1101 .resume = mceusb_dev_resume,
1102 .reset_resume = mceusb_dev_resume,
1103 .id_table = mceusb_dev_table
1104};
1105
1106static int __init mceusb_dev_init(void)
1107{
1108 int ret;
1109
1110 ret = usb_register(&mceusb_dev_driver);
1111 if (ret < 0)
1112 printk(KERN_ERR DRIVER_NAME
1113 ": usb register failed, result = %d\n", ret);
1114
1115 return ret;
1116}
1117
1118static void __exit mceusb_dev_exit(void)
1119{
1120 usb_deregister(&mceusb_dev_driver);
1121}
1122
1123module_init(mceusb_dev_init);
1124module_exit(mceusb_dev_exit);
1125
1126MODULE_DESCRIPTION(DRIVER_DESC);
1127MODULE_AUTHOR(DRIVER_AUTHOR);
1128MODULE_LICENSE("GPL");
1129MODULE_DEVICE_TABLE(usb, mceusb_dev_table);
1130
1131module_param(debug, bool, S_IRUGO | S_IWUSR);
1132MODULE_PARM_DESC(debug, "Debug enabled or not");
Clone of davem's net-next-2.6 tree