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[media] mceusb: fix keybouce issue after parser simplification
[mirror_ubuntu-bionic-kernel.git] / drivers / media / IR / mceusb.c
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/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 */
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 */
52 #define MS_TO_NS(msec) ((msec) * 1000)
53
54 /* MCE constants */
55 #define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */
56 #define MCE_TIME_UNIT 50 /* Approx 50us resolution */
57 #define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */
58 #define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */
59 #define MCE_IRDATA_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */
60 #define MCE_IRDATA_TRAILER 0x80 /* End of IR data */
61 #define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */
62 #define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */
63 #define MCE_DEFAULT_TX_MASK 0x03 /* Vals: TX1=0x01, TX2=0x02, ALL=0x03 */
64 #define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */
65 #define MCE_PULSE_MASK 0x7f /* Pulse mask */
66 #define MCE_MAX_PULSE_LENGTH 0x7f /* Longest transmittable pulse symbol */
67
68 #define MCE_HW_CMD_HEADER 0xff /* MCE hardware command header */
69 #define MCE_COMMAND_HEADER 0x9f /* MCE command header */
70 #define MCE_COMMAND_MASK 0xe0 /* Mask out command bits */
71 #define MCE_COMMAND_NULL 0x00 /* These show up various places... */
72 /* if buf[i] & MCE_COMMAND_MASK == 0x80 and buf[i] != MCE_COMMAND_HEADER,
73 * then we're looking at a raw IR data sample */
74 #define MCE_COMMAND_IRDATA 0x80
75 #define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */
76
77 /* Sub-commands, which follow MCE_COMMAND_HEADER or MCE_HW_CMD_HEADER */
78 #define MCE_CMD_SIG_END 0x01 /* End of signal */
79 #define MCE_CMD_PING 0x03 /* Ping device */
80 #define MCE_CMD_UNKNOWN 0x04 /* Unknown */
81 #define MCE_CMD_UNKNOWN2 0x05 /* Unknown */
82 #define MCE_CMD_S_CARRIER 0x06 /* Set TX carrier frequency */
83 #define MCE_CMD_G_CARRIER 0x07 /* Get TX carrier frequency */
84 #define MCE_CMD_S_TXMASK 0x08 /* Set TX port bitmask */
85 #define MCE_CMD_UNKNOWN3 0x09 /* Unknown */
86 #define MCE_CMD_UNKNOWN4 0x0a /* Unknown */
87 #define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */
88 #define MCE_CMD_S_TIMEOUT 0x0c /* Set RX timeout value */
89 #define MCE_CMD_G_TIMEOUT 0x0d /* Get RX timeout value */
90 #define MCE_CMD_UNKNOWN5 0x0e /* Unknown */
91 #define MCE_CMD_UNKNOWN6 0x0f /* Unknown */
92 #define MCE_CMD_G_RXPORTSTS 0x11 /* Get RX port status */
93 #define MCE_CMD_G_TXMASK 0x13 /* Set TX port bitmask */
94 #define MCE_CMD_S_RXSENSOR 0x14 /* Set RX sensor (std/learning) */
95 #define MCE_CMD_G_RXSENSOR 0x15 /* Get RX sensor (std/learning) */
96 #define MCE_RSP_PULSE_COUNT 0x15 /* RX pulse count (only if learning) */
97 #define MCE_CMD_TX_PORTS 0x16 /* Get number of TX ports */
98 #define MCE_CMD_G_WAKESRC 0x17 /* Get wake source */
99 #define MCE_CMD_UNKNOWN7 0x18 /* Unknown */
100 #define MCE_CMD_UNKNOWN8 0x19 /* Unknown */
101 #define MCE_CMD_UNKNOWN9 0x1b /* Unknown */
102 #define MCE_CMD_DEVICE_RESET 0xaa /* Reset the hardware */
103 #define MCE_RSP_CMD_INVALID 0xfe /* Invalid command issued */
104
105
106 /* module parameters */
107 #ifdef CONFIG_USB_DEBUG
108 static int debug = 1;
109 #else
110 static int debug;
111 #endif
112
113 /* general constants */
114 #define SEND_FLAG_IN_PROGRESS 1
115 #define SEND_FLAG_COMPLETE 2
116 #define RECV_FLAG_IN_PROGRESS 3
117 #define RECV_FLAG_COMPLETE 4
118
119 #define MCEUSB_RX 1
120 #define MCEUSB_TX 2
121
122 #define VENDOR_PHILIPS 0x0471
123 #define VENDOR_SMK 0x0609
124 #define VENDOR_TATUNG 0x1460
125 #define VENDOR_GATEWAY 0x107b
126 #define VENDOR_SHUTTLE 0x1308
127 #define VENDOR_SHUTTLE2 0x051c
128 #define VENDOR_MITSUMI 0x03ee
129 #define VENDOR_TOPSEED 0x1784
130 #define VENDOR_RICAVISION 0x179d
131 #define VENDOR_ITRON 0x195d
132 #define VENDOR_FIC 0x1509
133 #define VENDOR_LG 0x043e
134 #define VENDOR_MICROSOFT 0x045e
135 #define VENDOR_FORMOSA 0x147a
136 #define VENDOR_FINTEK 0x1934
137 #define VENDOR_PINNACLE 0x2304
138 #define VENDOR_ECS 0x1019
139 #define VENDOR_WISTRON 0x0fb8
140 #define VENDOR_COMPRO 0x185b
141 #define VENDOR_NORTHSTAR 0x04eb
142 #define VENDOR_REALTEK 0x0bda
143 #define VENDOR_TIVO 0x105a
144 #define VENDOR_CONEXANT 0x0572
145
146 enum mceusb_model_type {
147 MCE_GEN2 = 0, /* Most boards */
148 MCE_GEN1,
149 MCE_GEN3,
150 MCE_GEN2_TX_INV,
151 POLARIS_EVK,
152 CX_HYBRID_TV,
153 };
154
155 struct mceusb_model {
156 u32 mce_gen1:1;
157 u32 mce_gen2:1;
158 u32 mce_gen3:1;
159 u32 tx_mask_inverted:1;
160 u32 is_polaris:1;
161 u32 no_tx:1;
162
163 const char *rc_map; /* Allow specify a per-board map */
164 const char *name; /* per-board name */
165 };
166
167 static const struct mceusb_model mceusb_model[] = {
168 [MCE_GEN1] = {
169 .mce_gen1 = 1,
170 .tx_mask_inverted = 1,
171 },
172 [MCE_GEN2] = {
173 .mce_gen2 = 1,
174 },
175 [MCE_GEN2_TX_INV] = {
176 .mce_gen2 = 1,
177 .tx_mask_inverted = 1,
178 },
179 [MCE_GEN3] = {
180 .mce_gen3 = 1,
181 .tx_mask_inverted = 1,
182 },
183 [POLARIS_EVK] = {
184 .is_polaris = 1,
185 /*
186 * In fact, the EVK is shipped without
187 * remotes, but we should have something handy,
188 * to allow testing it
189 */
190 .rc_map = RC_MAP_RC5_HAUPPAUGE_NEW,
191 .name = "Conexant Hybrid TV (cx231xx) MCE IR",
192 },
193 [CX_HYBRID_TV] = {
194 .is_polaris = 1,
195 .no_tx = 1, /* tx isn't wired up at all */
196 .name = "Conexant Hybrid TV (cx231xx) MCE IR",
197 },
198 };
199
200 static struct usb_device_id mceusb_dev_table[] = {
201 /* Original Microsoft MCE IR Transceiver (often HP-branded) */
202 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d),
203 .driver_info = MCE_GEN1 },
204 /* Philips Infrared Transceiver - Sahara branded */
205 { USB_DEVICE(VENDOR_PHILIPS, 0x0608) },
206 /* Philips Infrared Transceiver - HP branded */
207 { USB_DEVICE(VENDOR_PHILIPS, 0x060c),
208 .driver_info = MCE_GEN2_TX_INV },
209 /* Philips SRM5100 */
210 { USB_DEVICE(VENDOR_PHILIPS, 0x060d) },
211 /* Philips Infrared Transceiver - Omaura */
212 { USB_DEVICE(VENDOR_PHILIPS, 0x060f) },
213 /* Philips Infrared Transceiver - Spinel plus */
214 { USB_DEVICE(VENDOR_PHILIPS, 0x0613) },
215 /* Philips eHome Infrared Transceiver */
216 { USB_DEVICE(VENDOR_PHILIPS, 0x0815) },
217 /* Philips/Spinel plus IR transceiver for ASUS */
218 { USB_DEVICE(VENDOR_PHILIPS, 0x206c) },
219 /* Philips/Spinel plus IR transceiver for ASUS */
220 { USB_DEVICE(VENDOR_PHILIPS, 0x2088) },
221 /* Realtek MCE IR Receiver */
222 { USB_DEVICE(VENDOR_REALTEK, 0x0161) },
223 /* SMK/Toshiba G83C0004D410 */
224 { USB_DEVICE(VENDOR_SMK, 0x031d),
225 .driver_info = MCE_GEN2_TX_INV },
226 /* SMK eHome Infrared Transceiver (Sony VAIO) */
227 { USB_DEVICE(VENDOR_SMK, 0x0322),
228 .driver_info = MCE_GEN2_TX_INV },
229 /* bundled with Hauppauge PVR-150 */
230 { USB_DEVICE(VENDOR_SMK, 0x0334),
231 .driver_info = MCE_GEN2_TX_INV },
232 /* SMK eHome Infrared Transceiver */
233 { USB_DEVICE(VENDOR_SMK, 0x0338) },
234 /* Tatung eHome Infrared Transceiver */
235 { USB_DEVICE(VENDOR_TATUNG, 0x9150) },
236 /* Shuttle eHome Infrared Transceiver */
237 { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) },
238 /* Shuttle eHome Infrared Transceiver */
239 { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) },
240 /* Gateway eHome Infrared Transceiver */
241 { USB_DEVICE(VENDOR_GATEWAY, 0x3009) },
242 /* Mitsumi */
243 { USB_DEVICE(VENDOR_MITSUMI, 0x2501) },
244 /* Topseed eHome Infrared Transceiver */
245 { USB_DEVICE(VENDOR_TOPSEED, 0x0001),
246 .driver_info = MCE_GEN2_TX_INV },
247 /* Topseed HP eHome Infrared Transceiver */
248 { USB_DEVICE(VENDOR_TOPSEED, 0x0006),
249 .driver_info = MCE_GEN2_TX_INV },
250 /* Topseed eHome Infrared Transceiver */
251 { USB_DEVICE(VENDOR_TOPSEED, 0x0007),
252 .driver_info = MCE_GEN2_TX_INV },
253 /* Topseed eHome Infrared Transceiver */
254 { USB_DEVICE(VENDOR_TOPSEED, 0x0008),
255 .driver_info = MCE_GEN3 },
256 /* Topseed eHome Infrared Transceiver */
257 { USB_DEVICE(VENDOR_TOPSEED, 0x000a),
258 .driver_info = MCE_GEN2_TX_INV },
259 /* Topseed eHome Infrared Transceiver */
260 { USB_DEVICE(VENDOR_TOPSEED, 0x0011),
261 .driver_info = MCE_GEN2_TX_INV },
262 /* Ricavision internal Infrared Transceiver */
263 { USB_DEVICE(VENDOR_RICAVISION, 0x0010) },
264 /* Itron ione Libra Q-11 */
265 { USB_DEVICE(VENDOR_ITRON, 0x7002) },
266 /* FIC eHome Infrared Transceiver */
267 { USB_DEVICE(VENDOR_FIC, 0x9242) },
268 /* LG eHome Infrared Transceiver */
269 { USB_DEVICE(VENDOR_LG, 0x9803) },
270 /* Microsoft MCE Infrared Transceiver */
271 { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) },
272 /* Formosa eHome Infrared Transceiver */
273 { USB_DEVICE(VENDOR_FORMOSA, 0xe015) },
274 /* Formosa21 / eHome Infrared Receiver */
275 { USB_DEVICE(VENDOR_FORMOSA, 0xe016) },
276 /* Formosa aim / Trust MCE Infrared Receiver */
277 { USB_DEVICE(VENDOR_FORMOSA, 0xe017) },
278 /* Formosa Industrial Computing / Beanbag Emulation Device */
279 { USB_DEVICE(VENDOR_FORMOSA, 0xe018) },
280 /* Formosa21 / eHome Infrared Receiver */
281 { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) },
282 /* Formosa Industrial Computing AIM IR605/A */
283 { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) },
284 /* Formosa Industrial Computing */
285 { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) },
286 /* Fintek eHome Infrared Transceiver */
287 { USB_DEVICE(VENDOR_FINTEK, 0x0602) },
288 /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */
289 { USB_DEVICE(VENDOR_FINTEK, 0x0702) },
290 /* Pinnacle Remote Kit */
291 { USB_DEVICE(VENDOR_PINNACLE, 0x0225),
292 .driver_info = MCE_GEN3 },
293 /* Elitegroup Computer Systems IR */
294 { USB_DEVICE(VENDOR_ECS, 0x0f38) },
295 /* Wistron Corp. eHome Infrared Receiver */
296 { USB_DEVICE(VENDOR_WISTRON, 0x0002) },
297 /* Compro K100 */
298 { USB_DEVICE(VENDOR_COMPRO, 0x3020) },
299 /* Compro K100 v2 */
300 { USB_DEVICE(VENDOR_COMPRO, 0x3082) },
301 /* Northstar Systems, Inc. eHome Infrared Transceiver */
302 { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) },
303 /* TiVo PC IR Receiver */
304 { USB_DEVICE(VENDOR_TIVO, 0x2000) },
305 /* Conexant Hybrid TV "Shelby" Polaris SDK */
306 { USB_DEVICE(VENDOR_CONEXANT, 0x58a1),
307 .driver_info = POLARIS_EVK },
308 /* Conexant Hybrid TV RDU253S Polaris */
309 { USB_DEVICE(VENDOR_CONEXANT, 0x58a5),
310 .driver_info = CX_HYBRID_TV },
311 /* Terminating entry */
312 { }
313 };
314
315 /* data structure for each usb transceiver */
316 struct mceusb_dev {
317 /* ir-core bits */
318 struct ir_dev_props *props;
319
320 /* optional features we can enable */
321 bool carrier_report_enabled;
322 bool learning_enabled;
323
324 /* core device bits */
325 struct device *dev;
326 struct input_dev *idev;
327
328 /* usb */
329 struct usb_device *usbdev;
330 struct urb *urb_in;
331 struct usb_endpoint_descriptor *usb_ep_in;
332 struct usb_endpoint_descriptor *usb_ep_out;
333
334 /* buffers and dma */
335 unsigned char *buf_in;
336 unsigned int len_in;
337 dma_addr_t dma_in;
338 dma_addr_t dma_out;
339
340 enum {
341 CMD_HEADER = 0,
342 SUBCMD,
343 CMD_DATA,
344 PARSE_IRDATA,
345 } parser_state;
346
347 u8 cmd, rem; /* Remaining IR data bytes in packet */
348
349 struct {
350 u32 connected:1;
351 u32 tx_mask_inverted:1;
352 u32 microsoft_gen1:1;
353 u32 no_tx:1;
354 } flags;
355
356 /* transmit support */
357 int send_flags;
358 u32 carrier;
359 unsigned char tx_mask;
360
361 char name[128];
362 char phys[64];
363 enum mceusb_model_type model;
364 };
365
366 /*
367 * MCE Device Command Strings
368 * Device command responses vary from device to device...
369 * - DEVICE_RESET resets the hardware to its default state
370 * - GET_REVISION fetches the hardware/software revision, common
371 * replies are ff 0b 45 ff 1b 08 and ff 0b 50 ff 1b 42
372 * - GET_CARRIER_FREQ gets the carrier mode and frequency of the
373 * device, with replies in the form of 9f 06 MM FF, where MM is 0-3,
374 * meaning clk of 10000000, 2500000, 625000 or 156250, and FF is
375 * ((clk / frequency) - 1)
376 * - GET_RX_TIMEOUT fetches the receiver timeout in units of 50us,
377 * response in the form of 9f 0c msb lsb
378 * - GET_TX_BITMASK fetches the transmitter bitmask, replies in
379 * the form of 9f 08 bm, where bm is the bitmask
380 * - GET_RX_SENSOR fetches the RX sensor setting -- long-range
381 * general use one or short-range learning one, in the form of
382 * 9f 14 ss, where ss is either 01 for long-range or 02 for short
383 * - SET_CARRIER_FREQ sets a new carrier mode and frequency
384 * - SET_TX_BITMASK sets the transmitter bitmask
385 * - SET_RX_TIMEOUT sets the receiver timeout
386 * - SET_RX_SENSOR sets which receiver sensor to use
387 */
388 static char DEVICE_RESET[] = {MCE_COMMAND_NULL, MCE_HW_CMD_HEADER,
389 MCE_CMD_DEVICE_RESET};
390 static char GET_REVISION[] = {MCE_HW_CMD_HEADER, MCE_CMD_G_REVISION};
391 static char GET_UNKNOWN[] = {MCE_HW_CMD_HEADER, MCE_CMD_UNKNOWN7};
392 static char GET_UNKNOWN2[] = {MCE_COMMAND_HEADER, MCE_CMD_UNKNOWN2};
393 static char GET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER, MCE_CMD_G_CARRIER};
394 static char GET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TIMEOUT};
395 static char GET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TXMASK};
396 static char GET_RX_SENSOR[] = {MCE_COMMAND_HEADER, MCE_CMD_G_RXSENSOR};
397 /* sub in desired values in lower byte or bytes for full command */
398 /* FIXME: make use of these for transmit.
399 static char SET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER,
400 MCE_CMD_S_CARRIER, 0x00, 0x00};
401 static char SET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_S_TXMASK, 0x00};
402 static char SET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER,
403 MCE_CMD_S_TIMEOUT, 0x00, 0x00};
404 static char SET_RX_SENSOR[] = {MCE_COMMAND_HEADER,
405 MCE_CMD_S_RXSENSOR, 0x00};
406 */
407
408 static int mceusb_cmdsize(u8 cmd, u8 subcmd)
409 {
410 int datasize = 0;
411
412 switch (cmd) {
413 case MCE_COMMAND_NULL:
414 if (subcmd == MCE_HW_CMD_HEADER)
415 datasize = 1;
416 break;
417 case MCE_HW_CMD_HEADER:
418 switch (subcmd) {
419 case MCE_CMD_G_REVISION:
420 datasize = 2;
421 break;
422 }
423 case MCE_COMMAND_HEADER:
424 switch (subcmd) {
425 case MCE_CMD_UNKNOWN:
426 case MCE_CMD_S_CARRIER:
427 case MCE_CMD_S_TIMEOUT:
428 case MCE_RSP_PULSE_COUNT:
429 datasize = 2;
430 break;
431 case MCE_CMD_SIG_END:
432 case MCE_CMD_S_TXMASK:
433 case MCE_CMD_S_RXSENSOR:
434 datasize = 1;
435 break;
436 }
437 }
438 return datasize;
439 }
440
441 static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf,
442 int offset, int len, bool out)
443 {
444 char codes[USB_BUFLEN * 3 + 1];
445 char inout[9];
446 u8 cmd, subcmd, data1, data2;
447 struct device *dev = ir->dev;
448 int i, start, skip = 0;
449
450 if (!debug)
451 return;
452
453 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
454 if (ir->flags.microsoft_gen1 && !out && !offset)
455 skip = 2;
456
457 if (len <= skip)
458 return;
459
460 for (i = 0; i < len && i < USB_BUFLEN; i++)
461 snprintf(codes + i * 3, 4, "%02x ", buf[i + offset] & 0xff);
462
463 dev_info(dev, "%sx data: %s(length=%d)\n",
464 (out ? "t" : "r"), codes, len);
465
466 if (out)
467 strcpy(inout, "Request\0");
468 else
469 strcpy(inout, "Got\0");
470
471 start = offset + skip;
472 cmd = buf[start] & 0xff;
473 subcmd = buf[start + 1] & 0xff;
474 data1 = buf[start + 2] & 0xff;
475 data2 = buf[start + 3] & 0xff;
476
477 switch (cmd) {
478 case MCE_COMMAND_NULL:
479 if ((subcmd == MCE_HW_CMD_HEADER) &&
480 (data1 == MCE_CMD_DEVICE_RESET))
481 dev_info(dev, "Device reset requested\n");
482 else
483 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
484 cmd, subcmd);
485 break;
486 case MCE_HW_CMD_HEADER:
487 switch (subcmd) {
488 case MCE_CMD_G_REVISION:
489 if (len == 2)
490 dev_info(dev, "Get hw/sw rev?\n");
491 else
492 dev_info(dev, "hw/sw rev 0x%02x 0x%02x "
493 "0x%02x 0x%02x\n", data1, data2,
494 buf[start + 4], buf[start + 5]);
495 break;
496 case MCE_CMD_DEVICE_RESET:
497 dev_info(dev, "Device reset requested\n");
498 break;
499 case MCE_RSP_CMD_INVALID:
500 dev_info(dev, "Previous command not supported\n");
501 break;
502 case MCE_CMD_UNKNOWN7:
503 case MCE_CMD_UNKNOWN9:
504 default:
505 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
506 cmd, subcmd);
507 break;
508 }
509 break;
510 case MCE_COMMAND_HEADER:
511 switch (subcmd) {
512 case MCE_CMD_SIG_END:
513 dev_info(dev, "End of signal\n");
514 break;
515 case MCE_CMD_PING:
516 dev_info(dev, "Ping\n");
517 break;
518 case MCE_CMD_UNKNOWN:
519 dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n",
520 data1, data2);
521 break;
522 case MCE_CMD_S_CARRIER:
523 dev_info(dev, "%s carrier mode and freq of "
524 "0x%02x 0x%02x\n", inout, data1, data2);
525 break;
526 case MCE_CMD_G_CARRIER:
527 dev_info(dev, "Get carrier mode and freq\n");
528 break;
529 case MCE_CMD_S_TXMASK:
530 dev_info(dev, "%s transmit blaster mask of 0x%02x\n",
531 inout, data1);
532 break;
533 case MCE_CMD_S_TIMEOUT:
534 /* value is in units of 50us, so x*50/100 or x/2 ms */
535 dev_info(dev, "%s receive timeout of %d ms\n",
536 inout, ((data1 << 8) | data2) / 2);
537 break;
538 case MCE_CMD_G_TIMEOUT:
539 dev_info(dev, "Get receive timeout\n");
540 break;
541 case MCE_CMD_G_TXMASK:
542 dev_info(dev, "Get transmit blaster mask\n");
543 break;
544 case MCE_CMD_S_RXSENSOR:
545 dev_info(dev, "%s %s-range receive sensor in use\n",
546 inout, data1 == 0x02 ? "short" : "long");
547 break;
548 case MCE_CMD_G_RXSENSOR:
549 /* aka MCE_RSP_PULSE_COUNT */
550 if (out)
551 dev_info(dev, "Get receive sensor\n");
552 else if (ir->learning_enabled)
553 dev_info(dev, "RX pulse count: %d\n",
554 ((data1 << 8) | data2));
555 break;
556 case MCE_RSP_CMD_INVALID:
557 dev_info(dev, "Error! Hardware is likely wedged...\n");
558 break;
559 case MCE_CMD_UNKNOWN2:
560 case MCE_CMD_UNKNOWN3:
561 case MCE_CMD_UNKNOWN5:
562 default:
563 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
564 cmd, subcmd);
565 break;
566 }
567 break;
568 default:
569 break;
570 }
571
572 if (cmd == MCE_IRDATA_TRAILER)
573 dev_info(dev, "End of raw IR data\n");
574 else if ((cmd != MCE_COMMAND_HEADER) &&
575 ((cmd & MCE_COMMAND_MASK) == MCE_COMMAND_IRDATA))
576 dev_info(dev, "Raw IR data, %d pulse/space samples\n", ir->rem);
577 }
578
579 static void mce_async_callback(struct urb *urb, struct pt_regs *regs)
580 {
581 struct mceusb_dev *ir;
582 int len;
583
584 if (!urb)
585 return;
586
587 ir = urb->context;
588 if (ir) {
589 len = urb->actual_length;
590
591 dev_dbg(ir->dev, "callback called (status=%d len=%d)\n",
592 urb->status, len);
593
594 mceusb_dev_printdata(ir, urb->transfer_buffer, 0, len, true);
595 }
596
597 }
598
599 /* request incoming or send outgoing usb packet - used to initialize remote */
600 static void mce_request_packet(struct mceusb_dev *ir,
601 struct usb_endpoint_descriptor *ep,
602 unsigned char *data, int size, int urb_type)
603 {
604 int res;
605 struct urb *async_urb;
606 struct device *dev = ir->dev;
607 unsigned char *async_buf;
608
609 if (urb_type == MCEUSB_TX) {
610 async_urb = usb_alloc_urb(0, GFP_KERNEL);
611 if (unlikely(!async_urb)) {
612 dev_err(dev, "Error, couldn't allocate urb!\n");
613 return;
614 }
615
616 async_buf = kzalloc(size, GFP_KERNEL);
617 if (!async_buf) {
618 dev_err(dev, "Error, couldn't allocate buf!\n");
619 usb_free_urb(async_urb);
620 return;
621 }
622
623 /* outbound data */
624 usb_fill_int_urb(async_urb, ir->usbdev,
625 usb_sndintpipe(ir->usbdev, ep->bEndpointAddress),
626 async_buf, size, (usb_complete_t)mce_async_callback,
627 ir, ep->bInterval);
628 memcpy(async_buf, data, size);
629
630 } else if (urb_type == MCEUSB_RX) {
631 /* standard request */
632 async_urb = ir->urb_in;
633 ir->send_flags = RECV_FLAG_IN_PROGRESS;
634
635 } else {
636 dev_err(dev, "Error! Unknown urb type %d\n", urb_type);
637 return;
638 }
639
640 dev_dbg(dev, "receive request called (size=%#x)\n", size);
641
642 async_urb->transfer_buffer_length = size;
643 async_urb->dev = ir->usbdev;
644
645 res = usb_submit_urb(async_urb, GFP_ATOMIC);
646 if (res) {
647 dev_dbg(dev, "receive request FAILED! (res=%d)\n", res);
648 return;
649 }
650 dev_dbg(dev, "receive request complete (res=%d)\n", res);
651 }
652
653 static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size)
654 {
655 mce_request_packet(ir, ir->usb_ep_out, data, size, MCEUSB_TX);
656 }
657
658 static void mce_sync_in(struct mceusb_dev *ir, unsigned char *data, int size)
659 {
660 mce_request_packet(ir, ir->usb_ep_in, data, size, MCEUSB_RX);
661 }
662
663 /* Send data out the IR blaster port(s) */
664 static int mceusb_tx_ir(void *priv, int *txbuf, u32 n)
665 {
666 struct mceusb_dev *ir = priv;
667 int i, ret = 0;
668 int count, cmdcount = 0;
669 unsigned char *cmdbuf; /* MCE command buffer */
670 long signal_duration = 0; /* Singnal length in us */
671 struct timeval start_time, end_time;
672
673 do_gettimeofday(&start_time);
674
675 count = n / sizeof(int);
676
677 cmdbuf = kzalloc(sizeof(int) * MCE_CMDBUF_SIZE, GFP_KERNEL);
678 if (!cmdbuf)
679 return -ENOMEM;
680
681 /* MCE tx init header */
682 cmdbuf[cmdcount++] = MCE_COMMAND_HEADER;
683 cmdbuf[cmdcount++] = MCE_CMD_S_TXMASK;
684 cmdbuf[cmdcount++] = ir->tx_mask;
685
686 /* Generate mce packet data */
687 for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) {
688 signal_duration += txbuf[i];
689 txbuf[i] = txbuf[i] / MCE_TIME_UNIT;
690
691 do { /* loop to support long pulses/spaces > 127*50us=6.35ms */
692
693 /* Insert mce packet header every 4th entry */
694 if ((cmdcount < MCE_CMDBUF_SIZE) &&
695 (cmdcount - MCE_TX_HEADER_LENGTH) %
696 MCE_CODE_LENGTH == 0)
697 cmdbuf[cmdcount++] = MCE_IRDATA_HEADER;
698
699 /* Insert mce packet data */
700 if (cmdcount < MCE_CMDBUF_SIZE)
701 cmdbuf[cmdcount++] =
702 (txbuf[i] < MCE_PULSE_BIT ?
703 txbuf[i] : MCE_MAX_PULSE_LENGTH) |
704 (i & 1 ? 0x00 : MCE_PULSE_BIT);
705 else {
706 ret = -EINVAL;
707 goto out;
708 }
709
710 } while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) &&
711 (txbuf[i] -= MCE_MAX_PULSE_LENGTH));
712 }
713
714 /* Fix packet length in last header */
715 cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] =
716 MCE_COMMAND_IRDATA + (cmdcount - MCE_TX_HEADER_LENGTH) %
717 MCE_CODE_LENGTH - 1;
718
719 /* Check if we have room for the empty packet at the end */
720 if (cmdcount >= MCE_CMDBUF_SIZE) {
721 ret = -EINVAL;
722 goto out;
723 }
724
725 /* All mce commands end with an empty packet (0x80) */
726 cmdbuf[cmdcount++] = MCE_IRDATA_TRAILER;
727
728 /* Transmit the command to the mce device */
729 mce_async_out(ir, cmdbuf, cmdcount);
730
731 /*
732 * The lircd gap calculation expects the write function to
733 * wait the time it takes for the ircommand to be sent before
734 * it returns.
735 */
736 do_gettimeofday(&end_time);
737 signal_duration -= (end_time.tv_usec - start_time.tv_usec) +
738 (end_time.tv_sec - start_time.tv_sec) * 1000000;
739
740 /* delay with the closest number of ticks */
741 set_current_state(TASK_INTERRUPTIBLE);
742 schedule_timeout(usecs_to_jiffies(signal_duration));
743
744 out:
745 kfree(cmdbuf);
746 return ret ? ret : n;
747 }
748
749 /* Sets active IR outputs -- mce devices typically have two */
750 static int mceusb_set_tx_mask(void *priv, u32 mask)
751 {
752 struct mceusb_dev *ir = priv;
753
754 if (ir->flags.tx_mask_inverted)
755 ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ?
756 mask ^ MCE_DEFAULT_TX_MASK : mask) << 1;
757 else
758 ir->tx_mask = mask;
759
760 return 0;
761 }
762
763 /* Sets the send carrier frequency and mode */
764 static int mceusb_set_tx_carrier(void *priv, u32 carrier)
765 {
766 struct mceusb_dev *ir = priv;
767 int clk = 10000000;
768 int prescaler = 0, divisor = 0;
769 unsigned char cmdbuf[4] = { MCE_COMMAND_HEADER,
770 MCE_CMD_S_CARRIER, 0x00, 0x00 };
771
772 /* Carrier has changed */
773 if (ir->carrier != carrier) {
774
775 if (carrier == 0) {
776 ir->carrier = carrier;
777 cmdbuf[2] = MCE_CMD_SIG_END;
778 cmdbuf[3] = MCE_IRDATA_TRAILER;
779 dev_dbg(ir->dev, "%s: disabling carrier "
780 "modulation\n", __func__);
781 mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
782 return carrier;
783 }
784
785 for (prescaler = 0; prescaler < 4; ++prescaler) {
786 divisor = (clk >> (2 * prescaler)) / carrier;
787 if (divisor <= 0xff) {
788 ir->carrier = carrier;
789 cmdbuf[2] = prescaler;
790 cmdbuf[3] = divisor;
791 dev_dbg(ir->dev, "%s: requesting %u HZ "
792 "carrier\n", __func__, carrier);
793
794 /* Transmit new carrier to mce device */
795 mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
796 return carrier;
797 }
798 }
799
800 return -EINVAL;
801
802 }
803
804 return carrier;
805 }
806
807 /*
808 * We don't do anything but print debug spew for many of the command bits
809 * we receive from the hardware, but some of them are useful information
810 * we want to store so that we can use them.
811 */
812 static void mceusb_handle_command(struct mceusb_dev *ir, int index)
813 {
814 u8 hi = ir->buf_in[index + 1] & 0xff;
815 u8 lo = ir->buf_in[index + 2] & 0xff;
816
817 switch (ir->buf_in[index]) {
818 /* 2-byte return value commands */
819 case MCE_CMD_S_TIMEOUT:
820 ir->props->timeout = MS_TO_NS((hi << 8 | lo) / 2);
821 break;
822
823 /* 1-byte return value commands */
824 case MCE_CMD_S_TXMASK:
825 ir->tx_mask = hi;
826 break;
827 case MCE_CMD_S_RXSENSOR:
828 ir->learning_enabled = (hi == 0x02);
829 break;
830 default:
831 break;
832 }
833 }
834
835 static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
836 {
837 DEFINE_IR_RAW_EVENT(rawir);
838 int i = 0;
839
840 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
841 if (ir->flags.microsoft_gen1)
842 i = 2;
843
844 /* if there's no data, just return now */
845 if (buf_len <= i)
846 return;
847
848 for (; i < buf_len; i++) {
849 switch (ir->parser_state) {
850 case SUBCMD:
851 ir->rem = mceusb_cmdsize(ir->cmd, ir->buf_in[i]);
852 mceusb_dev_printdata(ir, ir->buf_in, i - 1,
853 ir->rem + 2, false);
854 mceusb_handle_command(ir, i);
855 ir->parser_state = CMD_DATA;
856 break;
857 case PARSE_IRDATA:
858 ir->rem--;
859 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);
860 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK)
861 * MS_TO_NS(MCE_TIME_UNIT);
862
863 dev_dbg(ir->dev, "Storing %s with duration %d\n",
864 rawir.pulse ? "pulse" : "space",
865 rawir.duration);
866
867 ir_raw_event_store_with_filter(ir->idev, &rawir);
868 break;
869 case CMD_DATA:
870 ir->rem--;
871 break;
872 case CMD_HEADER:
873 /* decode mce packets of the form (84),AA,BB,CC,DD */
874 /* IR data packets can span USB messages - rem */
875 ir->cmd = ir->buf_in[i];
876 if ((ir->cmd == MCE_COMMAND_HEADER) ||
877 ((ir->cmd & MCE_COMMAND_MASK) !=
878 MCE_COMMAND_IRDATA)) {
879 ir->parser_state = SUBCMD;
880 continue;
881 }
882 ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK);
883 mceusb_dev_printdata(ir, ir->buf_in,
884 i, ir->rem + 1, false);
885 if (ir->rem)
886 ir->parser_state = PARSE_IRDATA;
887 break;
888 }
889
890 if (ir->parser_state != CMD_HEADER && !ir->rem)
891 ir->parser_state = CMD_HEADER;
892 }
893 dev_dbg(ir->dev, "processed IR data, calling ir_raw_event_handle\n");
894 ir_raw_event_handle(ir->idev);
895 }
896
897 static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs)
898 {
899 struct mceusb_dev *ir;
900 int buf_len;
901
902 if (!urb)
903 return;
904
905 ir = urb->context;
906 if (!ir) {
907 usb_unlink_urb(urb);
908 return;
909 }
910
911 buf_len = urb->actual_length;
912
913 if (ir->send_flags == RECV_FLAG_IN_PROGRESS) {
914 ir->send_flags = SEND_FLAG_COMPLETE;
915 dev_dbg(ir->dev, "setup answer received %d bytes\n",
916 buf_len);
917 }
918
919 switch (urb->status) {
920 /* success */
921 case 0:
922 mceusb_process_ir_data(ir, buf_len);
923 break;
924
925 case -ECONNRESET:
926 case -ENOENT:
927 case -ESHUTDOWN:
928 usb_unlink_urb(urb);
929 return;
930
931 case -EPIPE:
932 default:
933 dev_dbg(ir->dev, "Error: urb status = %d\n", urb->status);
934 break;
935 }
936
937 usb_submit_urb(urb, GFP_ATOMIC);
938 }
939
940 static void mceusb_gen1_init(struct mceusb_dev *ir)
941 {
942 int ret;
943 int maxp = ir->len_in;
944 struct device *dev = ir->dev;
945 char *data;
946
947 data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL);
948 if (!data) {
949 dev_err(dev, "%s: memory allocation failed!\n", __func__);
950 return;
951 }
952
953 /*
954 * This is a strange one. Windows issues a set address to the device
955 * on the receive control pipe and expect a certain value pair back
956 */
957 ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
958 USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
959 data, USB_CTRL_MSG_SZ, HZ * 3);
960 dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
961 dev_dbg(dev, "%s - data[0] = %d, data[1] = %d\n",
962 __func__, data[0], data[1]);
963
964 /* set feature: bit rate 38400 bps */
965 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
966 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
967 0xc04e, 0x0000, NULL, 0, HZ * 3);
968
969 dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
970
971 /* bRequest 4: set char length to 8 bits */
972 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
973 4, USB_TYPE_VENDOR,
974 0x0808, 0x0000, NULL, 0, HZ * 3);
975 dev_dbg(dev, "%s - retB = %d\n", __func__, ret);
976
977 /* bRequest 2: set handshaking to use DTR/DSR */
978 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
979 2, USB_TYPE_VENDOR,
980 0x0000, 0x0100, NULL, 0, HZ * 3);
981 dev_dbg(dev, "%s - retC = %d\n", __func__, ret);
982
983 /* device reset */
984 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
985 mce_sync_in(ir, NULL, maxp);
986
987 /* get hw/sw revision? */
988 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
989 mce_sync_in(ir, NULL, maxp);
990
991 kfree(data);
992 };
993
994 static void mceusb_gen2_init(struct mceusb_dev *ir)
995 {
996 int maxp = ir->len_in;
997
998 /* device reset */
999 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
1000 mce_sync_in(ir, NULL, maxp);
1001
1002 /* get hw/sw revision? */
1003 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
1004 mce_sync_in(ir, NULL, maxp);
1005
1006 /* unknown what the next two actually return... */
1007 mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN));
1008 mce_sync_in(ir, NULL, maxp);
1009 mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2));
1010 mce_sync_in(ir, NULL, maxp);
1011 }
1012
1013 static void mceusb_get_parameters(struct mceusb_dev *ir)
1014 {
1015 int maxp = ir->len_in;
1016
1017 /* get the carrier and frequency */
1018 mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));
1019 mce_sync_in(ir, NULL, maxp);
1020
1021 if (!ir->flags.no_tx) {
1022 /* get the transmitter bitmask */
1023 mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
1024 mce_sync_in(ir, NULL, maxp);
1025 }
1026
1027 /* get receiver timeout value */
1028 mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
1029 mce_sync_in(ir, NULL, maxp);
1030
1031 /* get receiver sensor setting */
1032 mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));
1033 mce_sync_in(ir, NULL, maxp);
1034 }
1035
1036 static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir)
1037 {
1038 struct input_dev *idev;
1039 struct ir_dev_props *props;
1040 struct device *dev = ir->dev;
1041 const char *rc_map = RC_MAP_RC6_MCE;
1042 const char *name = "Media Center Ed. eHome Infrared Remote Transceiver";
1043 int ret = -ENODEV;
1044
1045 idev = input_allocate_device();
1046 if (!idev) {
1047 dev_err(dev, "remote input dev allocation failed\n");
1048 goto idev_alloc_failed;
1049 }
1050
1051 ret = -ENOMEM;
1052 props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL);
1053 if (!props) {
1054 dev_err(dev, "remote ir dev props allocation failed\n");
1055 goto props_alloc_failed;
1056 }
1057
1058 if (mceusb_model[ir->model].name)
1059 name = mceusb_model[ir->model].name;
1060
1061 snprintf(ir->name, sizeof(ir->name), "%s (%04x:%04x)",
1062 name,
1063 le16_to_cpu(ir->usbdev->descriptor.idVendor),
1064 le16_to_cpu(ir->usbdev->descriptor.idProduct));
1065
1066 idev->name = ir->name;
1067 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));
1068 strlcat(ir->phys, "/input0", sizeof(ir->phys));
1069 idev->phys = ir->phys;
1070
1071 props->priv = ir;
1072 props->driver_type = RC_DRIVER_IR_RAW;
1073 props->allowed_protos = IR_TYPE_ALL;
1074 if (!ir->flags.no_tx) {
1075 props->s_tx_mask = mceusb_set_tx_mask;
1076 props->s_tx_carrier = mceusb_set_tx_carrier;
1077 props->tx_ir = mceusb_tx_ir;
1078 }
1079
1080 ir->props = props;
1081
1082 if (mceusb_model[ir->model].rc_map)
1083 rc_map = mceusb_model[ir->model].rc_map;
1084
1085 ret = ir_input_register(idev, rc_map, props, DRIVER_NAME);
1086 if (ret < 0) {
1087 dev_err(dev, "remote input device register failed\n");
1088 goto irdev_failed;
1089 }
1090
1091 return idev;
1092
1093 irdev_failed:
1094 kfree(props);
1095 props_alloc_failed:
1096 input_free_device(idev);
1097 idev_alloc_failed:
1098 return NULL;
1099 }
1100
1101 static int __devinit mceusb_dev_probe(struct usb_interface *intf,
1102 const struct usb_device_id *id)
1103 {
1104 struct usb_device *dev = interface_to_usbdev(intf);
1105 struct usb_host_interface *idesc;
1106 struct usb_endpoint_descriptor *ep = NULL;
1107 struct usb_endpoint_descriptor *ep_in = NULL;
1108 struct usb_endpoint_descriptor *ep_out = NULL;
1109 struct mceusb_dev *ir = NULL;
1110 int pipe, maxp, i;
1111 char buf[63], name[128] = "";
1112 enum mceusb_model_type model = id->driver_info;
1113 bool is_gen3;
1114 bool is_microsoft_gen1;
1115 bool tx_mask_inverted;
1116 bool is_polaris;
1117
1118 dev_dbg(&intf->dev, "%s called\n", __func__);
1119
1120 idesc = intf->cur_altsetting;
1121
1122 is_gen3 = mceusb_model[model].mce_gen3;
1123 is_microsoft_gen1 = mceusb_model[model].mce_gen1;
1124 tx_mask_inverted = mceusb_model[model].tx_mask_inverted;
1125 is_polaris = mceusb_model[model].is_polaris;
1126
1127 if (is_polaris) {
1128 /* Interface 0 is IR */
1129 if (idesc->desc.bInterfaceNumber)
1130 return -ENODEV;
1131 }
1132
1133 /* step through the endpoints to find first bulk in and out endpoint */
1134 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {
1135 ep = &idesc->endpoint[i].desc;
1136
1137 if ((ep_in == NULL)
1138 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1139 == USB_DIR_IN)
1140 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1141 == USB_ENDPOINT_XFER_BULK)
1142 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1143 == USB_ENDPOINT_XFER_INT))) {
1144
1145 ep_in = ep;
1146 ep_in->bmAttributes = USB_ENDPOINT_XFER_INT;
1147 ep_in->bInterval = 1;
1148 dev_dbg(&intf->dev, "acceptable inbound endpoint "
1149 "found\n");
1150 }
1151
1152 if ((ep_out == NULL)
1153 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1154 == USB_DIR_OUT)
1155 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1156 == USB_ENDPOINT_XFER_BULK)
1157 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1158 == USB_ENDPOINT_XFER_INT))) {
1159
1160 ep_out = ep;
1161 ep_out->bmAttributes = USB_ENDPOINT_XFER_INT;
1162 ep_out->bInterval = 1;
1163 dev_dbg(&intf->dev, "acceptable outbound endpoint "
1164 "found\n");
1165 }
1166 }
1167 if (ep_in == NULL) {
1168 dev_dbg(&intf->dev, "inbound and/or endpoint not found\n");
1169 return -ENODEV;
1170 }
1171
1172 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
1173 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
1174
1175 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
1176 if (!ir)
1177 goto mem_alloc_fail;
1178
1179 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in);
1180 if (!ir->buf_in)
1181 goto buf_in_alloc_fail;
1182
1183 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
1184 if (!ir->urb_in)
1185 goto urb_in_alloc_fail;
1186
1187 ir->usbdev = dev;
1188 ir->dev = &intf->dev;
1189 ir->len_in = maxp;
1190 ir->flags.microsoft_gen1 = is_microsoft_gen1;
1191 ir->flags.tx_mask_inverted = tx_mask_inverted;
1192 ir->flags.no_tx = mceusb_model[model].no_tx;
1193 ir->model = model;
1194
1195 /* Saving usb interface data for use by the transmitter routine */
1196 ir->usb_ep_in = ep_in;
1197 ir->usb_ep_out = ep_out;
1198
1199 if (dev->descriptor.iManufacturer
1200 && usb_string(dev, dev->descriptor.iManufacturer,
1201 buf, sizeof(buf)) > 0)
1202 strlcpy(name, buf, sizeof(name));
1203 if (dev->descriptor.iProduct
1204 && usb_string(dev, dev->descriptor.iProduct,
1205 buf, sizeof(buf)) > 0)
1206 snprintf(name + strlen(name), sizeof(name) - strlen(name),
1207 " %s", buf);
1208
1209 ir->idev = mceusb_init_input_dev(ir);
1210 if (!ir->idev)
1211 goto input_dev_fail;
1212
1213 /* flush buffers on the device */
1214 mce_sync_in(ir, NULL, maxp);
1215 mce_sync_in(ir, NULL, maxp);
1216
1217 /* wire up inbound data handler */
1218 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in,
1219 maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval);
1220 ir->urb_in->transfer_dma = ir->dma_in;
1221 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1222
1223 /* initialize device */
1224 if (ir->flags.microsoft_gen1)
1225 mceusb_gen1_init(ir);
1226 else if (!is_gen3)
1227 mceusb_gen2_init(ir);
1228
1229 mceusb_get_parameters(ir);
1230
1231 if (!ir->flags.no_tx)
1232 mceusb_set_tx_mask(ir, MCE_DEFAULT_TX_MASK);
1233
1234 usb_set_intfdata(intf, ir);
1235
1236 dev_info(&intf->dev, "Registered %s on usb%d:%d\n", name,
1237 dev->bus->busnum, dev->devnum);
1238
1239 return 0;
1240
1241 /* Error-handling path */
1242 input_dev_fail:
1243 usb_free_urb(ir->urb_in);
1244 urb_in_alloc_fail:
1245 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in);
1246 buf_in_alloc_fail:
1247 kfree(ir);
1248 mem_alloc_fail:
1249 dev_err(&intf->dev, "%s: device setup failed!\n", __func__);
1250
1251 return -ENOMEM;
1252 }
1253
1254
1255 static void __devexit mceusb_dev_disconnect(struct usb_interface *intf)
1256 {
1257 struct usb_device *dev = interface_to_usbdev(intf);
1258 struct mceusb_dev *ir = usb_get_intfdata(intf);
1259
1260 usb_set_intfdata(intf, NULL);
1261
1262 if (!ir)
1263 return;
1264
1265 ir->usbdev = NULL;
1266 ir_input_unregister(ir->idev);
1267 usb_kill_urb(ir->urb_in);
1268 usb_free_urb(ir->urb_in);
1269 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);
1270
1271 kfree(ir);
1272 }
1273
1274 static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message)
1275 {
1276 struct mceusb_dev *ir = usb_get_intfdata(intf);
1277 dev_info(ir->dev, "suspend\n");
1278 usb_kill_urb(ir->urb_in);
1279 return 0;
1280 }
1281
1282 static int mceusb_dev_resume(struct usb_interface *intf)
1283 {
1284 struct mceusb_dev *ir = usb_get_intfdata(intf);
1285 dev_info(ir->dev, "resume\n");
1286 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))
1287 return -EIO;
1288 return 0;
1289 }
1290
1291 static struct usb_driver mceusb_dev_driver = {
1292 .name = DRIVER_NAME,
1293 .probe = mceusb_dev_probe,
1294 .disconnect = mceusb_dev_disconnect,
1295 .suspend = mceusb_dev_suspend,
1296 .resume = mceusb_dev_resume,
1297 .reset_resume = mceusb_dev_resume,
1298 .id_table = mceusb_dev_table
1299 };
1300
1301 static int __init mceusb_dev_init(void)
1302 {
1303 int ret;
1304
1305 ret = usb_register(&mceusb_dev_driver);
1306 if (ret < 0)
1307 printk(KERN_ERR DRIVER_NAME
1308 ": usb register failed, result = %d\n", ret);
1309
1310 return ret;
1311 }
1312
1313 static void __exit mceusb_dev_exit(void)
1314 {
1315 usb_deregister(&mceusb_dev_driver);
1316 }
1317
1318 module_init(mceusb_dev_init);
1319 module_exit(mceusb_dev_exit);
1320
1321 MODULE_DESCRIPTION(DRIVER_DESC);
1322 MODULE_AUTHOR(DRIVER_AUTHOR);
1323 MODULE_LICENSE("GPL");
1324 MODULE_DEVICE_TABLE(usb, mceusb_dev_table);
1325
1326 module_param(debug, bool, S_IRUGO | S_IWUSR);
1327 MODULE_PARM_DESC(debug, "Debug enabled or not");
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