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Input: wacom - fix touch parsing on newer Bamboos
[linux-btrfs-devel.git] / drivers / media / rc / mceusb.c
blobad927fcaa0203e3128346b8911fc962c5008c420
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 *
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/usb/input.h>
40 #include <media/rc-core.h>
41
42 #define DRIVER_VERSION "1.91"
43 #define DRIVER_AUTHOR "Jarod Wilson <jarod@wilsonet.com>"
44 #define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \
45 "device driver"
46 #define DRIVER_NAME "mceusb"
47
48 #define USB_BUFLEN 32 /* USB reception buffer length */
49 #define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */
50 #define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */
51
52 /* MCE constants */
53 #define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */
54 #define MCE_TIME_UNIT 50 /* Approx 50us resolution */
55 #define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */
56 #define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */
57 #define MCE_IRDATA_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */
58 #define MCE_IRDATA_TRAILER 0x80 /* End of IR data */
59 #define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */
60 #define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */
61 #define MCE_DEFAULT_TX_MASK 0x03 /* Vals: TX1=0x01, TX2=0x02, ALL=0x03 */
62 #define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */
63 #define MCE_PULSE_MASK 0x7f /* Pulse mask */
64 #define MCE_MAX_PULSE_LENGTH 0x7f /* Longest transmittable pulse symbol */
65
66 #define MCE_HW_CMD_HEADER 0xff /* MCE hardware command header */
67 #define MCE_COMMAND_HEADER 0x9f /* MCE command header */
68 #define MCE_COMMAND_MASK 0xe0 /* Mask out command bits */
69 #define MCE_COMMAND_NULL 0x00 /* These show up various places... */
70 /* if buf[i] & MCE_COMMAND_MASK == 0x80 and buf[i] != MCE_COMMAND_HEADER,
71 * then we're looking at a raw IR data sample */
72 #define MCE_COMMAND_IRDATA 0x80
73 #define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */
74
75 /* Sub-commands, which follow MCE_COMMAND_HEADER or MCE_HW_CMD_HEADER */
76 #define MCE_CMD_SIG_END 0x01 /* End of signal */
77 #define MCE_CMD_PING 0x03 /* Ping device */
78 #define MCE_CMD_UNKNOWN 0x04 /* Unknown */
79 #define MCE_CMD_UNKNOWN2 0x05 /* Unknown */
80 #define MCE_CMD_S_CARRIER 0x06 /* Set TX carrier frequency */
81 #define MCE_CMD_G_CARRIER 0x07 /* Get TX carrier frequency */
82 #define MCE_CMD_S_TXMASK 0x08 /* Set TX port bitmask */
83 #define MCE_CMD_UNKNOWN3 0x09 /* Unknown */
84 #define MCE_CMD_UNKNOWN4 0x0a /* Unknown */
85 #define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */
86 #define MCE_CMD_S_TIMEOUT 0x0c /* Set RX timeout value */
87 #define MCE_CMD_G_TIMEOUT 0x0d /* Get RX timeout value */
88 #define MCE_CMD_UNKNOWN5 0x0e /* Unknown */
89 #define MCE_CMD_UNKNOWN6 0x0f /* Unknown */
90 #define MCE_CMD_G_RXPORTSTS 0x11 /* Get RX port status */
91 #define MCE_CMD_G_TXMASK 0x13 /* Set TX port bitmask */
92 #define MCE_CMD_S_RXSENSOR 0x14 /* Set RX sensor (std/learning) */
93 #define MCE_CMD_G_RXSENSOR 0x15 /* Get RX sensor (std/learning) */
94 #define MCE_RSP_PULSE_COUNT 0x15 /* RX pulse count (only if learning) */
95 #define MCE_CMD_TX_PORTS 0x16 /* Get number of TX ports */
96 #define MCE_CMD_G_WAKESRC 0x17 /* Get wake source */
97 #define MCE_CMD_UNKNOWN7 0x18 /* Unknown */
98 #define MCE_CMD_UNKNOWN8 0x19 /* Unknown */
99 #define MCE_CMD_UNKNOWN9 0x1b /* Unknown */
100 #define MCE_CMD_DEVICE_RESET 0xaa /* Reset the hardware */
101 #define MCE_RSP_CMD_INVALID 0xfe /* Invalid command issued */
102
103
104 /* module parameters */
105 #ifdef CONFIG_USB_DEBUG
106 static int debug = 1;
107 #else
108 static int debug;
109 #endif
110
111 /* general constants */
112 #define SEND_FLAG_IN_PROGRESS 1
113 #define SEND_FLAG_COMPLETE 2
114 #define RECV_FLAG_IN_PROGRESS 3
115 #define RECV_FLAG_COMPLETE 4
116
117 #define MCEUSB_RX 1
118 #define MCEUSB_TX 2
119
120 #define VENDOR_PHILIPS 0x0471
121 #define VENDOR_SMK 0x0609
122 #define VENDOR_TATUNG 0x1460
123 #define VENDOR_GATEWAY 0x107b
124 #define VENDOR_SHUTTLE 0x1308
125 #define VENDOR_SHUTTLE2 0x051c
126 #define VENDOR_MITSUMI 0x03ee
127 #define VENDOR_TOPSEED 0x1784
128 #define VENDOR_RICAVISION 0x179d
129 #define VENDOR_ITRON 0x195d
130 #define VENDOR_FIC 0x1509
131 #define VENDOR_LG 0x043e
132 #define VENDOR_MICROSOFT 0x045e
133 #define VENDOR_FORMOSA 0x147a
134 #define VENDOR_FINTEK 0x1934
135 #define VENDOR_PINNACLE 0x2304
136 #define VENDOR_ECS 0x1019
137 #define VENDOR_WISTRON 0x0fb8
138 #define VENDOR_COMPRO 0x185b
139 #define VENDOR_NORTHSTAR 0x04eb
140 #define VENDOR_REALTEK 0x0bda
141 #define VENDOR_TIVO 0x105a
142 #define VENDOR_CONEXANT 0x0572
143
144 enum mceusb_model_type {
145 MCE_GEN2 = 0, /* Most boards */
146 MCE_GEN1,
147 MCE_GEN3,
148 MCE_GEN2_TX_INV,
149 POLARIS_EVK,
150 CX_HYBRID_TV,
151 MULTIFUNCTION,
152 TIVO_KIT,
153 MCE_GEN2_NO_TX,
154 };
155
156 struct mceusb_model {
157 u32 mce_gen1:1;
158 u32 mce_gen2:1;
159 u32 mce_gen3:1;
160 u32 tx_mask_normal:1;
161 u32 no_tx:1;
162
163 int ir_intfnum;
164
165 const char *rc_map; /* Allow specify a per-board map */
166 const char *name; /* per-board name */
167 };
168
169 static const struct mceusb_model mceusb_model[] = {
170 [MCE_GEN1] = {
171 .mce_gen1 = 1,
172 .tx_mask_normal = 1,
173 },
174 [MCE_GEN2] = {
175 .mce_gen2 = 1,
176 },
177 [MCE_GEN2_NO_TX] = {
178 .mce_gen2 = 1,
179 .no_tx = 1,
180 },
181 [MCE_GEN2_TX_INV] = {
182 .mce_gen2 = 1,
183 .tx_mask_normal = 1,
184 },
185 [MCE_GEN3] = {
186 .mce_gen3 = 1,
187 .tx_mask_normal = 1,
188 },
189 [POLARIS_EVK] = {
190 /*
191 * In fact, the EVK is shipped without
192 * remotes, but we should have something handy,
193 * to allow testing it
194 */
195 .rc_map = RC_MAP_HAUPPAUGE,
196 .name = "Conexant Hybrid TV (cx231xx) MCE IR",
197 },
198 [CX_HYBRID_TV] = {
199 .no_tx = 1, /* tx isn't wired up at all */
200 .name = "Conexant Hybrid TV (cx231xx) MCE IR",
201 },
202 [MULTIFUNCTION] = {
203 .mce_gen2 = 1,
204 .ir_intfnum = 2,
205 },
206 [TIVO_KIT] = {
207 .mce_gen2 = 1,
208 .rc_map = RC_MAP_TIVO,
209 },
210 };
211
212 static struct usb_device_id mceusb_dev_table[] = {
213 /* Original Microsoft MCE IR Transceiver (often HP-branded) */
214 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d),
215 .driver_info = MCE_GEN1 },
216 /* Philips Infrared Transceiver - Sahara branded */
217 { USB_DEVICE(VENDOR_PHILIPS, 0x0608) },
218 /* Philips Infrared Transceiver - HP branded */
219 { USB_DEVICE(VENDOR_PHILIPS, 0x060c),
220 .driver_info = MCE_GEN2_TX_INV },
221 /* Philips SRM5100 */
222 { USB_DEVICE(VENDOR_PHILIPS, 0x060d) },
223 /* Philips Infrared Transceiver - Omaura */
224 { USB_DEVICE(VENDOR_PHILIPS, 0x060f) },
225 /* Philips Infrared Transceiver - Spinel plus */
226 { USB_DEVICE(VENDOR_PHILIPS, 0x0613) },
227 /* Philips eHome Infrared Transceiver */
228 { USB_DEVICE(VENDOR_PHILIPS, 0x0815) },
229 /* Philips/Spinel plus IR transceiver for ASUS */
230 { USB_DEVICE(VENDOR_PHILIPS, 0x206c) },
231 /* Philips/Spinel plus IR transceiver for ASUS */
232 { USB_DEVICE(VENDOR_PHILIPS, 0x2088) },
233 /* Philips IR transceiver (Dell branded) */
234 { USB_DEVICE(VENDOR_PHILIPS, 0x2093) },
235 /* Realtek MCE IR Receiver and card reader */
236 { USB_DEVICE(VENDOR_REALTEK, 0x0161),
237 .driver_info = MULTIFUNCTION },
238 /* SMK/Toshiba G83C0004D410 */
239 { USB_DEVICE(VENDOR_SMK, 0x031d),
240 .driver_info = MCE_GEN2_TX_INV },
241 /* SMK eHome Infrared Transceiver (Sony VAIO) */
242 { USB_DEVICE(VENDOR_SMK, 0x0322),
243 .driver_info = MCE_GEN2_TX_INV },
244 /* bundled with Hauppauge PVR-150 */
245 { USB_DEVICE(VENDOR_SMK, 0x0334),
246 .driver_info = MCE_GEN2_TX_INV },
247 /* SMK eHome Infrared Transceiver */
248 { USB_DEVICE(VENDOR_SMK, 0x0338) },
249 /* Tatung eHome Infrared Transceiver */
250 { USB_DEVICE(VENDOR_TATUNG, 0x9150) },
251 /* Shuttle eHome Infrared Transceiver */
252 { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) },
253 /* Shuttle eHome Infrared Transceiver */
254 { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) },
255 /* Gateway eHome Infrared Transceiver */
256 { USB_DEVICE(VENDOR_GATEWAY, 0x3009) },
257 /* Mitsumi */
258 { USB_DEVICE(VENDOR_MITSUMI, 0x2501) },
259 /* Topseed eHome Infrared Transceiver */
260 { USB_DEVICE(VENDOR_TOPSEED, 0x0001),
261 .driver_info = MCE_GEN2_TX_INV },
262 /* Topseed HP eHome Infrared Transceiver */
263 { USB_DEVICE(VENDOR_TOPSEED, 0x0006),
264 .driver_info = MCE_GEN2_TX_INV },
265 /* Topseed eHome Infrared Transceiver */
266 { USB_DEVICE(VENDOR_TOPSEED, 0x0007),
267 .driver_info = MCE_GEN2_TX_INV },
268 /* Topseed eHome Infrared Transceiver */
269 { USB_DEVICE(VENDOR_TOPSEED, 0x0008),
270 .driver_info = MCE_GEN3 },
271 /* Topseed eHome Infrared Transceiver */
272 { USB_DEVICE(VENDOR_TOPSEED, 0x000a),
273 .driver_info = MCE_GEN2_TX_INV },
274 /* Topseed eHome Infrared Transceiver */
275 { USB_DEVICE(VENDOR_TOPSEED, 0x0011),
276 .driver_info = MCE_GEN3 },
277 /* Ricavision internal Infrared Transceiver */
278 { USB_DEVICE(VENDOR_RICAVISION, 0x0010) },
279 /* Itron ione Libra Q-11 */
280 { USB_DEVICE(VENDOR_ITRON, 0x7002) },
281 /* FIC eHome Infrared Transceiver */
282 { USB_DEVICE(VENDOR_FIC, 0x9242) },
283 /* LG eHome Infrared Transceiver */
284 { USB_DEVICE(VENDOR_LG, 0x9803) },
285 /* Microsoft MCE Infrared Transceiver */
286 { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) },
287 /* Formosa eHome Infrared Transceiver */
288 { USB_DEVICE(VENDOR_FORMOSA, 0xe015) },
289 /* Formosa21 / eHome Infrared Receiver */
290 { USB_DEVICE(VENDOR_FORMOSA, 0xe016) },
291 /* Formosa aim / Trust MCE Infrared Receiver */
292 { USB_DEVICE(VENDOR_FORMOSA, 0xe017),
293 .driver_info = MCE_GEN2_NO_TX },
294 /* Formosa Industrial Computing / Beanbag Emulation Device */
295 { USB_DEVICE(VENDOR_FORMOSA, 0xe018) },
296 /* Formosa21 / eHome Infrared Receiver */
297 { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) },
298 /* Formosa Industrial Computing AIM IR605/A */
299 { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) },
300 /* Formosa Industrial Computing */
301 { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) },
302 /* Fintek eHome Infrared Transceiver (HP branded) */
303 { USB_DEVICE(VENDOR_FINTEK, 0x5168) },
304 /* Fintek eHome Infrared Transceiver */
305 { USB_DEVICE(VENDOR_FINTEK, 0x0602) },
306 /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */
307 { USB_DEVICE(VENDOR_FINTEK, 0x0702) },
308 /* Pinnacle Remote Kit */
309 { USB_DEVICE(VENDOR_PINNACLE, 0x0225),
310 .driver_info = MCE_GEN3 },
311 /* Elitegroup Computer Systems IR */
312 { USB_DEVICE(VENDOR_ECS, 0x0f38) },
313 /* Wistron Corp. eHome Infrared Receiver */
314 { USB_DEVICE(VENDOR_WISTRON, 0x0002) },
315 /* Compro K100 */
316 { USB_DEVICE(VENDOR_COMPRO, 0x3020) },
317 /* Compro K100 v2 */
318 { USB_DEVICE(VENDOR_COMPRO, 0x3082) },
319 /* Northstar Systems, Inc. eHome Infrared Transceiver */
320 { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) },
321 /* TiVo PC IR Receiver */
322 { USB_DEVICE(VENDOR_TIVO, 0x2000),
323 .driver_info = TIVO_KIT },
324 /* Conexant Hybrid TV "Shelby" Polaris SDK */
325 { USB_DEVICE(VENDOR_CONEXANT, 0x58a1),
326 .driver_info = POLARIS_EVK },
327 /* Conexant Hybrid TV RDU253S Polaris */
328 { USB_DEVICE(VENDOR_CONEXANT, 0x58a5),
329 .driver_info = CX_HYBRID_TV },
330 /* Terminating entry */
331 { }
332 };
333
334 /* data structure for each usb transceiver */
335 struct mceusb_dev {
336 /* ir-core bits */
337 struct rc_dev *rc;
338
339 /* optional features we can enable */
340 bool carrier_report_enabled;
341 bool learning_enabled;
342
343 /* core device bits */
344 struct device *dev;
345
346 /* usb */
347 struct usb_device *usbdev;
348 struct urb *urb_in;
349 struct usb_endpoint_descriptor *usb_ep_in;
350 struct usb_endpoint_descriptor *usb_ep_out;
351
352 /* buffers and dma */
353 unsigned char *buf_in;
354 unsigned int len_in;
355 dma_addr_t dma_in;
356 dma_addr_t dma_out;
357
358 enum {
359 CMD_HEADER = 0,
360 SUBCMD,
361 CMD_DATA,
362 PARSE_IRDATA,
363 } parser_state;
364
365 u8 cmd, rem; /* Remaining IR data bytes in packet */
366
367 struct {
368 u32 connected:1;
369 u32 tx_mask_normal:1;
370 u32 microsoft_gen1:1;
371 u32 no_tx:1;
372 } flags;
373
374 /* transmit support */
375 int send_flags;
376 u32 carrier;
377 unsigned char tx_mask;
378
379 char name[128];
380 char phys[64];
381 enum mceusb_model_type model;
382 };
383
384 /*
385 * MCE Device Command Strings
386 * Device command responses vary from device to device...
387 * - DEVICE_RESET resets the hardware to its default state
388 * - GET_REVISION fetches the hardware/software revision, common
389 * replies are ff 0b 45 ff 1b 08 and ff 0b 50 ff 1b 42
390 * - GET_CARRIER_FREQ gets the carrier mode and frequency of the
391 * device, with replies in the form of 9f 06 MM FF, where MM is 0-3,
392 * meaning clk of 10000000, 2500000, 625000 or 156250, and FF is
393 * ((clk / frequency) - 1)
394 * - GET_RX_TIMEOUT fetches the receiver timeout in units of 50us,
395 * response in the form of 9f 0c msb lsb
396 * - GET_TX_BITMASK fetches the transmitter bitmask, replies in
397 * the form of 9f 08 bm, where bm is the bitmask
398 * - GET_RX_SENSOR fetches the RX sensor setting -- long-range
399 * general use one or short-range learning one, in the form of
400 * 9f 14 ss, where ss is either 01 for long-range or 02 for short
401 * - SET_CARRIER_FREQ sets a new carrier mode and frequency
402 * - SET_TX_BITMASK sets the transmitter bitmask
403 * - SET_RX_TIMEOUT sets the receiver timeout
404 * - SET_RX_SENSOR sets which receiver sensor to use
405 */
406 static char DEVICE_RESET[] = {MCE_COMMAND_NULL, MCE_HW_CMD_HEADER,
407 MCE_CMD_DEVICE_RESET};
408 static char GET_REVISION[] = {MCE_HW_CMD_HEADER, MCE_CMD_G_REVISION};
409 static char GET_UNKNOWN[] = {MCE_HW_CMD_HEADER, MCE_CMD_UNKNOWN7};
410 static char GET_UNKNOWN2[] = {MCE_COMMAND_HEADER, MCE_CMD_UNKNOWN2};
411 static char GET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER, MCE_CMD_G_CARRIER};
412 static char GET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TIMEOUT};
413 static char GET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TXMASK};
414 static char GET_RX_SENSOR[] = {MCE_COMMAND_HEADER, MCE_CMD_G_RXSENSOR};
415 /* sub in desired values in lower byte or bytes for full command */
416 /* FIXME: make use of these for transmit.
417 static char SET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER,
418 MCE_CMD_S_CARRIER, 0x00, 0x00};
419 static char SET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_S_TXMASK, 0x00};
420 static char SET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER,
421 MCE_CMD_S_TIMEOUT, 0x00, 0x00};
422 static char SET_RX_SENSOR[] = {MCE_COMMAND_HEADER,
423 MCE_CMD_S_RXSENSOR, 0x00};
424 */
425
426 static int mceusb_cmdsize(u8 cmd, u8 subcmd)
427 {
428 int datasize = 0;
429
430 switch (cmd) {
431 case MCE_COMMAND_NULL:
432 if (subcmd == MCE_HW_CMD_HEADER)
433 datasize = 1;
434 break;
435 case MCE_HW_CMD_HEADER:
436 switch (subcmd) {
437 case MCE_CMD_G_REVISION:
438 datasize = 2;
439 break;
440 }
441 case MCE_COMMAND_HEADER:
442 switch (subcmd) {
443 case MCE_CMD_UNKNOWN:
444 case MCE_CMD_S_CARRIER:
445 case MCE_CMD_S_TIMEOUT:
446 case MCE_RSP_PULSE_COUNT:
447 datasize = 2;
448 break;
449 case MCE_CMD_SIG_END:
450 case MCE_CMD_S_TXMASK:
451 case MCE_CMD_S_RXSENSOR:
452 datasize = 1;
453 break;
454 }
455 }
456 return datasize;
457 }
458
459 static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf,
460 int offset, int len, bool out)
461 {
462 char codes[USB_BUFLEN * 3 + 1];
463 char inout[9];
464 u8 cmd, subcmd, data1, data2;
465 struct device *dev = ir->dev;
466 int i, start, skip = 0;
467
468 if (!debug)
469 return;
470
471 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
472 if (ir->flags.microsoft_gen1 && !out && !offset)
473 skip = 2;
474
475 if (len <= skip)
476 return;
477
478 for (i = 0; i < len && i < USB_BUFLEN; i++)
479 snprintf(codes + i * 3, 4, "%02x ", buf[i + offset] & 0xff);
480
481 dev_info(dev, "%sx data: %s(length=%d)\n",
482 (out ? "t" : "r"), codes, len);
483
484 if (out)
485 strcpy(inout, "Request\0");
486 else
487 strcpy(inout, "Got\0");
488
489 start = offset + skip;
490 cmd = buf[start] & 0xff;
491 subcmd = buf[start + 1] & 0xff;
492 data1 = buf[start + 2] & 0xff;
493 data2 = buf[start + 3] & 0xff;
494
495 switch (cmd) {
496 case MCE_COMMAND_NULL:
497 if ((subcmd == MCE_HW_CMD_HEADER) &&
498 (data1 == MCE_CMD_DEVICE_RESET))
499 dev_info(dev, "Device reset requested\n");
500 else
501 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
502 cmd, subcmd);
503 break;
504 case MCE_HW_CMD_HEADER:
505 switch (subcmd) {
506 case MCE_CMD_G_REVISION:
507 if (len == 2)
508 dev_info(dev, "Get hw/sw rev?\n");
509 else
510 dev_info(dev, "hw/sw rev 0x%02x 0x%02x "
511 "0x%02x 0x%02x\n", data1, data2,
512 buf[start + 4], buf[start + 5]);
513 break;
514 case MCE_CMD_DEVICE_RESET:
515 dev_info(dev, "Device reset requested\n");
516 break;
517 case MCE_RSP_CMD_INVALID:
518 dev_info(dev, "Previous command not supported\n");
519 break;
520 case MCE_CMD_UNKNOWN7:
521 case MCE_CMD_UNKNOWN9:
522 default:
523 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
524 cmd, subcmd);
525 break;
526 }
527 break;
528 case MCE_COMMAND_HEADER:
529 switch (subcmd) {
530 case MCE_CMD_SIG_END:
531 dev_info(dev, "End of signal\n");
532 break;
533 case MCE_CMD_PING:
534 dev_info(dev, "Ping\n");
535 break;
536 case MCE_CMD_UNKNOWN:
537 dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n",
538 data1, data2);
539 break;
540 case MCE_CMD_S_CARRIER:
541 dev_info(dev, "%s carrier mode and freq of "
542 "0x%02x 0x%02x\n", inout, data1, data2);
543 break;
544 case MCE_CMD_G_CARRIER:
545 dev_info(dev, "Get carrier mode and freq\n");
546 break;
547 case MCE_CMD_S_TXMASK:
548 dev_info(dev, "%s transmit blaster mask of 0x%02x\n",
549 inout, data1);
550 break;
551 case MCE_CMD_S_TIMEOUT:
552 /* value is in units of 50us, so x*50/100 or x/2 ms */
553 dev_info(dev, "%s receive timeout of %d ms\n",
554 inout, ((data1 << 8) | data2) / 2);
555 break;
556 case MCE_CMD_G_TIMEOUT:
557 dev_info(dev, "Get receive timeout\n");
558 break;
559 case MCE_CMD_G_TXMASK:
560 dev_info(dev, "Get transmit blaster mask\n");
561 break;
562 case MCE_CMD_S_RXSENSOR:
563 dev_info(dev, "%s %s-range receive sensor in use\n",
564 inout, data1 == 0x02 ? "short" : "long");
565 break;
566 case MCE_CMD_G_RXSENSOR:
567 /* aka MCE_RSP_PULSE_COUNT */
568 if (out)
569 dev_info(dev, "Get receive sensor\n");
570 else if (ir->learning_enabled)
571 dev_info(dev, "RX pulse count: %d\n",
572 ((data1 << 8) | data2));
573 break;
574 case MCE_RSP_CMD_INVALID:
575 dev_info(dev, "Error! Hardware is likely wedged...\n");
576 break;
577 case MCE_CMD_UNKNOWN2:
578 case MCE_CMD_UNKNOWN3:
579 case MCE_CMD_UNKNOWN5:
580 default:
581 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
582 cmd, subcmd);
583 break;
584 }
585 break;
586 default:
587 break;
588 }
589
590 if (cmd == MCE_IRDATA_TRAILER)
591 dev_info(dev, "End of raw IR data\n");
592 else if ((cmd != MCE_COMMAND_HEADER) &&
593 ((cmd & MCE_COMMAND_MASK) == MCE_COMMAND_IRDATA))
594 dev_info(dev, "Raw IR data, %d pulse/space samples\n", ir->rem);
595 }
596
597 static void mce_async_callback(struct urb *urb, struct pt_regs *regs)
598 {
599 struct mceusb_dev *ir;
600 int len;
601
602 if (!urb)
603 return;
604
605 ir = urb->context;
606 if (ir) {
607 len = urb->actual_length;
608
609 dev_dbg(ir->dev, "callback called (status=%d len=%d)\n",
610 urb->status, len);
611
612 mceusb_dev_printdata(ir, urb->transfer_buffer, 0, len, true);
613 }
614
615 }
616
617 /* request incoming or send outgoing usb packet - used to initialize remote */
618 static void mce_request_packet(struct mceusb_dev *ir, unsigned char *data,
619 int size, int urb_type)
620 {
621 int res, pipe;
622 struct urb *async_urb;
623 struct device *dev = ir->dev;
624 unsigned char *async_buf;
625
626 if (urb_type == MCEUSB_TX) {
627 async_urb = usb_alloc_urb(0, GFP_KERNEL);
628 if (unlikely(!async_urb)) {
629 dev_err(dev, "Error, couldn't allocate urb!\n");
630 return;
631 }
632
633 async_buf = kzalloc(size, GFP_KERNEL);
634 if (!async_buf) {
635 dev_err(dev, "Error, couldn't allocate buf!\n");
636 usb_free_urb(async_urb);
637 return;
638 }
639
640 /* outbound data */
641 pipe = usb_sndintpipe(ir->usbdev,
642 ir->usb_ep_out->bEndpointAddress);
643 usb_fill_int_urb(async_urb, ir->usbdev, pipe,
644 async_buf, size, (usb_complete_t)mce_async_callback,
645 ir, ir->usb_ep_out->bInterval);
646 memcpy(async_buf, data, size);
647
648 } else if (urb_type == MCEUSB_RX) {
649 /* standard request */
650 async_urb = ir->urb_in;
651 ir->send_flags = RECV_FLAG_IN_PROGRESS;
652
653 } else {
654 dev_err(dev, "Error! Unknown urb type %d\n", urb_type);
655 return;
656 }
657
658 dev_dbg(dev, "receive request called (size=%#x)\n", size);
659
660 async_urb->transfer_buffer_length = size;
661 async_urb->dev = ir->usbdev;
662
663 res = usb_submit_urb(async_urb, GFP_ATOMIC);
664 if (res) {
665 dev_dbg(dev, "receive request FAILED! (res=%d)\n", res);
666 return;
667 }
668 dev_dbg(dev, "receive request complete (res=%d)\n", res);
669 }
670
671 static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size)
672 {
673 mce_request_packet(ir, data, size, MCEUSB_TX);
674 }
675
676 static void mce_sync_in(struct mceusb_dev *ir, unsigned char *data, int size)
677 {
678 mce_request_packet(ir, data, size, MCEUSB_RX);
679 }
680
681 /* Send data out the IR blaster port(s) */
682 static int mceusb_tx_ir(struct rc_dev *dev, int *txbuf, u32 n)
683 {
684 struct mceusb_dev *ir = dev->priv;
685 int i, ret = 0;
686 int count, cmdcount = 0;
687 unsigned char *cmdbuf; /* MCE command buffer */
688 long signal_duration = 0; /* Singnal length in us */
689 struct timeval start_time, end_time;
690
691 do_gettimeofday(&start_time);
692
693 count = n / sizeof(int);
694
695 cmdbuf = kzalloc(sizeof(int) * MCE_CMDBUF_SIZE, GFP_KERNEL);
696 if (!cmdbuf)
697 return -ENOMEM;
698
699 /* MCE tx init header */
700 cmdbuf[cmdcount++] = MCE_COMMAND_HEADER;
701 cmdbuf[cmdcount++] = MCE_CMD_S_TXMASK;
702 cmdbuf[cmdcount++] = ir->tx_mask;
703
704 /* Generate mce packet data */
705 for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) {
706 signal_duration += txbuf[i];
707 txbuf[i] = txbuf[i] / MCE_TIME_UNIT;
708
709 do { /* loop to support long pulses/spaces > 127*50us=6.35ms */
710
711 /* Insert mce packet header every 4th entry */
712 if ((cmdcount < MCE_CMDBUF_SIZE) &&
713 (cmdcount - MCE_TX_HEADER_LENGTH) %
714 MCE_CODE_LENGTH == 0)
715 cmdbuf[cmdcount++] = MCE_IRDATA_HEADER;
716
717 /* Insert mce packet data */
718 if (cmdcount < MCE_CMDBUF_SIZE)
719 cmdbuf[cmdcount++] =
720 (txbuf[i] < MCE_PULSE_BIT ?
721 txbuf[i] : MCE_MAX_PULSE_LENGTH) |
722 (i & 1 ? 0x00 : MCE_PULSE_BIT);
723 else {
724 ret = -EINVAL;
725 goto out;
726 }
727
728 } while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) &&
729 (txbuf[i] -= MCE_MAX_PULSE_LENGTH));
730 }
731
732 /* Fix packet length in last header */
733 cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] =
734 MCE_COMMAND_IRDATA + (cmdcount - MCE_TX_HEADER_LENGTH) %
735 MCE_CODE_LENGTH - 1;
736
737 /* Check if we have room for the empty packet at the end */
738 if (cmdcount >= MCE_CMDBUF_SIZE) {
739 ret = -EINVAL;
740 goto out;
741 }
742
743 /* All mce commands end with an empty packet (0x80) */
744 cmdbuf[cmdcount++] = MCE_IRDATA_TRAILER;
745
746 /* Transmit the command to the mce device */
747 mce_async_out(ir, cmdbuf, cmdcount);
748
749 /*
750 * The lircd gap calculation expects the write function to
751 * wait the time it takes for the ircommand to be sent before
752 * it returns.
753 */
754 do_gettimeofday(&end_time);
755 signal_duration -= (end_time.tv_usec - start_time.tv_usec) +
756 (end_time.tv_sec - start_time.tv_sec) * 1000000;
757
758 /* delay with the closest number of ticks */
759 set_current_state(TASK_INTERRUPTIBLE);
760 schedule_timeout(usecs_to_jiffies(signal_duration));
761
762 out:
763 kfree(cmdbuf);
764 return ret ? ret : n;
765 }
766
767 /* Sets active IR outputs -- mce devices typically have two */
768 static int mceusb_set_tx_mask(struct rc_dev *dev, u32 mask)
769 {
770 struct mceusb_dev *ir = dev->priv;
771
772 if (ir->flags.tx_mask_normal)
773 ir->tx_mask = mask;
774 else
775 ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ?
776 mask ^ MCE_DEFAULT_TX_MASK : mask) << 1;
777
778 return 0;
779 }
780
781 /* Sets the send carrier frequency and mode */
782 static int mceusb_set_tx_carrier(struct rc_dev *dev, u32 carrier)
783 {
784 struct mceusb_dev *ir = dev->priv;
785 int clk = 10000000;
786 int prescaler = 0, divisor = 0;
787 unsigned char cmdbuf[4] = { MCE_COMMAND_HEADER,
788 MCE_CMD_S_CARRIER, 0x00, 0x00 };
789
790 /* Carrier has changed */
791 if (ir->carrier != carrier) {
792
793 if (carrier == 0) {
794 ir->carrier = carrier;
795 cmdbuf[2] = MCE_CMD_SIG_END;
796 cmdbuf[3] = MCE_IRDATA_TRAILER;
797 dev_dbg(ir->dev, "%s: disabling carrier "
798 "modulation\n", __func__);
799 mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
800 return carrier;
801 }
802
803 for (prescaler = 0; prescaler < 4; ++prescaler) {
804 divisor = (clk >> (2 * prescaler)) / carrier;
805 if (divisor <= 0xff) {
806 ir->carrier = carrier;
807 cmdbuf[2] = prescaler;
808 cmdbuf[3] = divisor;
809 dev_dbg(ir->dev, "%s: requesting %u HZ "
810 "carrier\n", __func__, carrier);
811
812 /* Transmit new carrier to mce device */
813 mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
814 return carrier;
815 }
816 }
817
818 return -EINVAL;
819
820 }
821
822 return carrier;
823 }
824
825 /*
826 * We don't do anything but print debug spew for many of the command bits
827 * we receive from the hardware, but some of them are useful information
828 * we want to store so that we can use them.
829 */
830 static void mceusb_handle_command(struct mceusb_dev *ir, int index)
831 {
832 u8 hi = ir->buf_in[index + 1] & 0xff;
833 u8 lo = ir->buf_in[index + 2] & 0xff;
834
835 switch (ir->buf_in[index]) {
836 /* 2-byte return value commands */
837 case MCE_CMD_S_TIMEOUT:
838 ir->rc->timeout = US_TO_NS((hi << 8 | lo) / 2);
839 break;
840
841 /* 1-byte return value commands */
842 case MCE_CMD_S_TXMASK:
843 ir->tx_mask = hi;
844 break;
845 case MCE_CMD_S_RXSENSOR:
846 ir->learning_enabled = (hi == 0x02);
847 break;
848 default:
849 break;
850 }
851 }
852
853 static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
854 {
855 DEFINE_IR_RAW_EVENT(rawir);
856 int i = 0;
857
858 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
859 if (ir->flags.microsoft_gen1)
860 i = 2;
861
862 /* if there's no data, just return now */
863 if (buf_len <= i)
864 return;
865
866 for (; i < buf_len; i++) {
867 switch (ir->parser_state) {
868 case SUBCMD:
869 ir->rem = mceusb_cmdsize(ir->cmd, ir->buf_in[i]);
870 mceusb_dev_printdata(ir, ir->buf_in, i - 1,
871 ir->rem + 2, false);
872 mceusb_handle_command(ir, i);
873 ir->parser_state = CMD_DATA;
874 break;
875 case PARSE_IRDATA:
876 ir->rem--;
877 init_ir_raw_event(&rawir);
878 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);
879 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK)
880 * US_TO_NS(MCE_TIME_UNIT);
881
882 dev_dbg(ir->dev, "Storing %s with duration %d\n",
883 rawir.pulse ? "pulse" : "space",
884 rawir.duration);
885
886 ir_raw_event_store_with_filter(ir->rc, &rawir);
887 break;
888 case CMD_DATA:
889 ir->rem--;
890 break;
891 case CMD_HEADER:
892 /* decode mce packets of the form (84),AA,BB,CC,DD */
893 /* IR data packets can span USB messages - rem */
894 ir->cmd = ir->buf_in[i];
895 if ((ir->cmd == MCE_COMMAND_HEADER) ||
896 ((ir->cmd & MCE_COMMAND_MASK) !=
897 MCE_COMMAND_IRDATA)) {
898 ir->parser_state = SUBCMD;
899 continue;
900 }
901 ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK);
902 mceusb_dev_printdata(ir, ir->buf_in,
903 i, ir->rem + 1, false);
904 if (ir->rem)
905 ir->parser_state = PARSE_IRDATA;
906 else
907 ir_raw_event_reset(ir->rc);
908 break;
909 }
910
911 if (ir->parser_state != CMD_HEADER && !ir->rem)
912 ir->parser_state = CMD_HEADER;
913 }
914 dev_dbg(ir->dev, "processed IR data, calling ir_raw_event_handle\n");
915 ir_raw_event_handle(ir->rc);
916 }
917
918 static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs)
919 {
920 struct mceusb_dev *ir;
921 int buf_len;
922
923 if (!urb)
924 return;
925
926 ir = urb->context;
927 if (!ir) {
928 usb_unlink_urb(urb);
929 return;
930 }
931
932 buf_len = urb->actual_length;
933
934 if (ir->send_flags == RECV_FLAG_IN_PROGRESS) {
935 ir->send_flags = SEND_FLAG_COMPLETE;
936 dev_dbg(ir->dev, "setup answer received %d bytes\n",
937 buf_len);
938 }
939
940 switch (urb->status) {
941 /* success */
942 case 0:
943 mceusb_process_ir_data(ir, buf_len);
944 break;
945
946 case -ECONNRESET:
947 case -ENOENT:
948 case -ESHUTDOWN:
949 usb_unlink_urb(urb);
950 return;
951
952 case -EPIPE:
953 default:
954 dev_dbg(ir->dev, "Error: urb status = %d\n", urb->status);
955 break;
956 }
957
958 usb_submit_urb(urb, GFP_ATOMIC);
959 }
960
961 static void mceusb_gen1_init(struct mceusb_dev *ir)
962 {
963 int ret;
964 int maxp = ir->len_in;
965 struct device *dev = ir->dev;
966 char *data;
967
968 data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL);
969 if (!data) {
970 dev_err(dev, "%s: memory allocation failed!\n", __func__);
971 return;
972 }
973
974 /*
975 * This is a strange one. Windows issues a set address to the device
976 * on the receive control pipe and expect a certain value pair back
977 */
978 ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
979 USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
980 data, USB_CTRL_MSG_SZ, HZ * 3);
981 dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
982 dev_dbg(dev, "%s - data[0] = %d, data[1] = %d\n",
983 __func__, data[0], data[1]);
984
985 /* set feature: bit rate 38400 bps */
986 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
987 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
988 0xc04e, 0x0000, NULL, 0, HZ * 3);
989
990 dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
991
992 /* bRequest 4: set char length to 8 bits */
993 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
994 4, USB_TYPE_VENDOR,
995 0x0808, 0x0000, NULL, 0, HZ * 3);
996 dev_dbg(dev, "%s - retB = %d\n", __func__, ret);
997
998 /* bRequest 2: set handshaking to use DTR/DSR */
999 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
1000 2, USB_TYPE_VENDOR,
1001 0x0000, 0x0100, NULL, 0, HZ * 3);
1002 dev_dbg(dev, "%s - retC = %d\n", __func__, ret);
1003
1004 /* device reset */
1005 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
1006 mce_sync_in(ir, NULL, maxp);
1007
1008 /* get hw/sw revision? */
1009 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
1010 mce_sync_in(ir, NULL, maxp);
1011
1012 kfree(data);
1013 };
1014
1015 static void mceusb_gen2_init(struct mceusb_dev *ir)
1016 {
1017 int maxp = ir->len_in;
1018
1019 /* device reset */
1020 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
1021 mce_sync_in(ir, NULL, maxp);
1022
1023 /* get hw/sw revision? */
1024 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
1025 mce_sync_in(ir, NULL, maxp);
1026
1027 /* unknown what the next two actually return... */
1028 mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN));
1029 mce_sync_in(ir, NULL, maxp);
1030 mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2));
1031 mce_sync_in(ir, NULL, maxp);
1032 }
1033
1034 static void mceusb_get_parameters(struct mceusb_dev *ir)
1035 {
1036 int maxp = ir->len_in;
1037
1038 /* get the carrier and frequency */
1039 mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));
1040 mce_sync_in(ir, NULL, maxp);
1041
1042 if (!ir->flags.no_tx) {
1043 /* get the transmitter bitmask */
1044 mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
1045 mce_sync_in(ir, NULL, maxp);
1046 }
1047
1048 /* get receiver timeout value */
1049 mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
1050 mce_sync_in(ir, NULL, maxp);
1051
1052 /* get receiver sensor setting */
1053 mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));
1054 mce_sync_in(ir, NULL, maxp);
1055 }
1056
1057 static struct rc_dev *mceusb_init_rc_dev(struct mceusb_dev *ir)
1058 {
1059 struct device *dev = ir->dev;
1060 struct rc_dev *rc;
1061 int ret;
1062
1063 rc = rc_allocate_device();
1064 if (!rc) {
1065 dev_err(dev, "remote dev allocation failed\n");
1066 goto out;
1067 }
1068
1069 snprintf(ir->name, sizeof(ir->name), "%s (%04x:%04x)",
1070 mceusb_model[ir->model].name ?
1071 mceusb_model[ir->model].name :
1072 "Media Center Ed. eHome Infrared Remote Transceiver",
1073 le16_to_cpu(ir->usbdev->descriptor.idVendor),
1074 le16_to_cpu(ir->usbdev->descriptor.idProduct));
1075
1076 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));
1077
1078 rc->input_name = ir->name;
1079 rc->input_phys = ir->phys;
1080 usb_to_input_id(ir->usbdev, &rc->input_id);
1081 rc->dev.parent = dev;
1082 rc->priv = ir;
1083 rc->driver_type = RC_DRIVER_IR_RAW;
1084 rc->allowed_protos = RC_TYPE_ALL;
1085 rc->timeout = US_TO_NS(1000);
1086 if (!ir->flags.no_tx) {
1087 rc->s_tx_mask = mceusb_set_tx_mask;
1088 rc->s_tx_carrier = mceusb_set_tx_carrier;
1089 rc->tx_ir = mceusb_tx_ir;
1090 }
1091 rc->driver_name = DRIVER_NAME;
1092 rc->map_name = mceusb_model[ir->model].rc_map ?
1093 mceusb_model[ir->model].rc_map : RC_MAP_RC6_MCE;
1094
1095 ret = rc_register_device(rc);
1096 if (ret < 0) {
1097 dev_err(dev, "remote dev registration failed\n");
1098 goto out;
1099 }
1100
1101 return rc;
1102
1103 out:
1104 rc_free_device(rc);
1105 return NULL;
1106 }
1107
1108 static int __devinit mceusb_dev_probe(struct usb_interface *intf,
1109 const struct usb_device_id *id)
1110 {
1111 struct usb_device *dev = interface_to_usbdev(intf);
1112 struct usb_host_interface *idesc;
1113 struct usb_endpoint_descriptor *ep = NULL;
1114 struct usb_endpoint_descriptor *ep_in = NULL;
1115 struct usb_endpoint_descriptor *ep_out = NULL;
1116 struct mceusb_dev *ir = NULL;
1117 int pipe, maxp, i;
1118 char buf[63], name[128] = "";
1119 enum mceusb_model_type model = id->driver_info;
1120 bool is_gen3;
1121 bool is_microsoft_gen1;
1122 bool tx_mask_normal;
1123 int ir_intfnum;
1124
1125 dev_dbg(&intf->dev, "%s called\n", __func__);
1126
1127 idesc = intf->cur_altsetting;
1128
1129 is_gen3 = mceusb_model[model].mce_gen3;
1130 is_microsoft_gen1 = mceusb_model[model].mce_gen1;
1131 tx_mask_normal = mceusb_model[model].tx_mask_normal;
1132 ir_intfnum = mceusb_model[model].ir_intfnum;
1133
1134 /* There are multi-function devices with non-IR interfaces */
1135 if (idesc->desc.bInterfaceNumber != ir_intfnum)
1136 return -ENODEV;
1137
1138 /* step through the endpoints to find first bulk in and out endpoint */
1139 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {
1140 ep = &idesc->endpoint[i].desc;
1141
1142 if ((ep_in == NULL)
1143 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1144 == USB_DIR_IN)
1145 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1146 == USB_ENDPOINT_XFER_BULK)
1147 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1148 == USB_ENDPOINT_XFER_INT))) {
1149
1150 ep_in = ep;
1151 ep_in->bmAttributes = USB_ENDPOINT_XFER_INT;
1152 ep_in->bInterval = 1;
1153 dev_dbg(&intf->dev, "acceptable inbound endpoint "
1154 "found\n");
1155 }
1156
1157 if ((ep_out == NULL)
1158 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1159 == USB_DIR_OUT)
1160 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1161 == USB_ENDPOINT_XFER_BULK)
1162 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1163 == USB_ENDPOINT_XFER_INT))) {
1164
1165 ep_out = ep;
1166 ep_out->bmAttributes = USB_ENDPOINT_XFER_INT;
1167 ep_out->bInterval = 1;
1168 dev_dbg(&intf->dev, "acceptable outbound endpoint "
1169 "found\n");
1170 }
1171 }
1172 if (ep_in == NULL) {
1173 dev_dbg(&intf->dev, "inbound and/or endpoint not found\n");
1174 return -ENODEV;
1175 }
1176
1177 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
1178 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
1179
1180 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
1181 if (!ir)
1182 goto mem_alloc_fail;
1183
1184 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in);
1185 if (!ir->buf_in)
1186 goto buf_in_alloc_fail;
1187
1188 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
1189 if (!ir->urb_in)
1190 goto urb_in_alloc_fail;
1191
1192 ir->usbdev = dev;
1193 ir->dev = &intf->dev;
1194 ir->len_in = maxp;
1195 ir->flags.microsoft_gen1 = is_microsoft_gen1;
1196 ir->flags.tx_mask_normal = tx_mask_normal;
1197 ir->flags.no_tx = mceusb_model[model].no_tx;
1198 ir->model = model;
1199
1200 /* Saving usb interface data for use by the transmitter routine */
1201 ir->usb_ep_in = ep_in;
1202 ir->usb_ep_out = ep_out;
1203
1204 if (dev->descriptor.iManufacturer
1205 && usb_string(dev, dev->descriptor.iManufacturer,
1206 buf, sizeof(buf)) > 0)
1207 strlcpy(name, buf, sizeof(name));
1208 if (dev->descriptor.iProduct
1209 && usb_string(dev, dev->descriptor.iProduct,
1210 buf, sizeof(buf)) > 0)
1211 snprintf(name + strlen(name), sizeof(name) - strlen(name),
1212 " %s", buf);
1213
1214 ir->rc = mceusb_init_rc_dev(ir);
1215 if (!ir->rc)
1216 goto rc_dev_fail;
1217
1218 /* flush buffers on the device */
1219 mce_sync_in(ir, NULL, maxp);
1220 mce_sync_in(ir, NULL, maxp);
1221
1222 /* wire up inbound data handler */
1223 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in,
1224 maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval);
1225 ir->urb_in->transfer_dma = ir->dma_in;
1226 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1227
1228 /* initialize device */
1229 if (ir->flags.microsoft_gen1)
1230 mceusb_gen1_init(ir);
1231 else if (!is_gen3)
1232 mceusb_gen2_init(ir);
1233
1234 mceusb_get_parameters(ir);
1235
1236 if (!ir->flags.no_tx)
1237 mceusb_set_tx_mask(ir->rc, MCE_DEFAULT_TX_MASK);
1238
1239 usb_set_intfdata(intf, ir);
1240
1241 dev_info(&intf->dev, "Registered %s on usb%d:%d\n", name,
1242 dev->bus->busnum, dev->devnum);
1243
1244 return 0;
1245
1246 /* Error-handling path */
1247 rc_dev_fail:
1248 usb_free_urb(ir->urb_in);
1249 urb_in_alloc_fail:
1250 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in);
1251 buf_in_alloc_fail:
1252 kfree(ir);
1253 mem_alloc_fail:
1254 dev_err(&intf->dev, "%s: device setup failed!\n", __func__);
1255
1256 return -ENOMEM;
1257 }
1258
1259
1260 static void __devexit mceusb_dev_disconnect(struct usb_interface *intf)
1261 {
1262 struct usb_device *dev = interface_to_usbdev(intf);
1263 struct mceusb_dev *ir = usb_get_intfdata(intf);
1264
1265 usb_set_intfdata(intf, NULL);
1266
1267 if (!ir)
1268 return;
1269
1270 ir->usbdev = NULL;
1271 rc_unregister_device(ir->rc);
1272 usb_kill_urb(ir->urb_in);
1273 usb_free_urb(ir->urb_in);
1274 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);
1275
1276 kfree(ir);
1277 }
1278
1279 static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message)
1280 {
1281 struct mceusb_dev *ir = usb_get_intfdata(intf);
1282 dev_info(ir->dev, "suspend\n");
1283 usb_kill_urb(ir->urb_in);
1284 return 0;
1285 }
1286
1287 static int mceusb_dev_resume(struct usb_interface *intf)
1288 {
1289 struct mceusb_dev *ir = usb_get_intfdata(intf);
1290 dev_info(ir->dev, "resume\n");
1291 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))
1292 return -EIO;
1293 return 0;
1294 }
1295
1296 static struct usb_driver mceusb_dev_driver = {
1297 .name = DRIVER_NAME,
1298 .probe = mceusb_dev_probe,
1299 .disconnect = mceusb_dev_disconnect,
1300 .suspend = mceusb_dev_suspend,
1301 .resume = mceusb_dev_resume,
1302 .reset_resume = mceusb_dev_resume,
1303 .id_table = mceusb_dev_table
1304 };
1305
1306 static int __init mceusb_dev_init(void)
1307 {
1308 int ret;
1309
1310 ret = usb_register(&mceusb_dev_driver);
1311 if (ret < 0)
1312 printk(KERN_ERR DRIVER_NAME
1313 ": usb register failed, result = %d\n", ret);
1314
1315 return ret;
1316 }
1317
1318 static void __exit mceusb_dev_exit(void)
1319 {
1320 usb_deregister(&mceusb_dev_driver);
1321 }
1322
1323 module_init(mceusb_dev_init);
1324 module_exit(mceusb_dev_exit);
1325
1326 MODULE_DESCRIPTION(DRIVER_DESC);
1327 MODULE_AUTHOR(DRIVER_AUTHOR);
1328 MODULE_LICENSE("GPL");
1329 MODULE_DEVICE_TABLE(usb, mceusb_dev_table);
1330
1331 module_param(debug, bool, S_IRUGO | S_IWUSR);
1332 MODULE_PARM_DESC(debug, "Debug enabled or not");
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