1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers
5 * Copyright (c) 2010-2011, Jarod Wilson <jarod@redhat.com>
7 * Based on the original lirc_mceusb and lirc_mceusb2 drivers, by Dan
8 * Conti, Martin Blatter and Daniel Melander, the latter of which was
9 * in turn also based on the lirc_atiusb driver by Paul Miller. The
10 * two mce drivers were merged into one by Jarod Wilson, with transmit
11 * support for the 1st-gen device added primarily by Patrick Calhoun,
12 * with a bit of tweaks by Jarod. Debugging improvements and proper
13 * support for what appears to be 3rd-gen hardware added by Jarod.
14 * Initial port from lirc driver to ir-core drivery by Jarod, based
15 * partially on a port to an earlier proposed IR infrastructure by
16 * Jon Smirl, which included enhancements and simplifications to the
17 * incoming IR buffer parsing routines.
19 * Updated in July of 2011 with the aid of Microsoft's official
20 * remote/transceiver requirements and specification document, found at
21 * download.microsoft.com, title
22 * Windows-Media-Center-RC-IR-Collection-Green-Button-Specification-03-08-2011-V2.pdf
25 #include <linux/device.h>
26 #include <linux/module.h>
27 #include <linux/slab.h>
28 #include <linux/workqueue.h>
29 #include <linux/usb.h>
30 #include <linux/usb/input.h>
31 #include <linux/pm_wakeup.h>
32 #include <media/rc-core.h>
34 #define DRIVER_VERSION "1.95"
35 #define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>"
36 #define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \
38 #define DRIVER_NAME "mceusb"
40 #define USB_TX_TIMEOUT 1000 /* in milliseconds */
41 #define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */
42 #define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */
45 #define MCE_IRBUF_SIZE 128 /* TX IR buffer length */
46 #define MCE_TIME_UNIT 50 /* Approx 50us resolution */
47 #define MCE_PACKET_SIZE 31 /* Max length of packet (with header) */
48 #define MCE_IRDATA_HEADER (0x80 + MCE_PACKET_SIZE - 1)
49 /* Actual format is 0x80 + num_bytes */
50 #define MCE_IRDATA_TRAILER 0x80 /* End of IR data */
51 #define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */
52 #define MCE_DEFAULT_TX_MASK 0x03 /* Vals: TX1=0x01, TX2=0x02, ALL=0x03 */
53 #define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */
54 #define MCE_PULSE_MASK 0x7f /* Pulse mask */
55 #define MCE_MAX_PULSE_LENGTH 0x7f /* Longest transmittable pulse symbol */
58 * The interface between the host and the IR hardware is command-response
59 * based. All commands and responses have a consistent format, where a lead
60 * byte always identifies the type of data following it. The lead byte has
61 * a port value in the 3 highest bits and a length value in the 5 lowest
64 * The length field is overloaded, with a value of 11111 indicating that the
65 * following byte is a command or response code, and the length of the entire
66 * message is determined by the code. If the length field is not 11111, then
67 * it specifies the number of bytes of port data that follow.
70 #define MCE_PORT_IR 0x4 /* (0x4 << 5) | MCE_CMD = 0x9f */
71 #define MCE_PORT_SYS 0x7 /* (0x7 << 5) | MCE_CMD = 0xff */
72 #define MCE_PORT_SER 0x6 /* 0xc0 through 0xdf flush & 0x1f bytes */
73 #define MCE_PORT_MASK 0xe0 /* Mask out command bits */
75 /* Command port headers */
76 #define MCE_CMD_PORT_IR 0x9f /* IR-related cmd/rsp */
77 #define MCE_CMD_PORT_SYS 0xff /* System (non-IR) device cmd/rsp */
79 /* Commands that set device state (2-4 bytes in length) */
80 #define MCE_CMD_RESET 0xfe /* Reset device, 2 bytes */
81 #define MCE_CMD_RESUME 0xaa /* Resume device after error, 2 bytes */
82 #define MCE_CMD_SETIRCFS 0x06 /* Set tx carrier, 4 bytes */
83 #define MCE_CMD_SETIRTIMEOUT 0x0c /* Set timeout, 4 bytes */
84 #define MCE_CMD_SETIRTXPORTS 0x08 /* Set tx ports, 3 bytes */
85 #define MCE_CMD_SETIRRXPORTEN 0x14 /* Set rx ports, 3 bytes */
86 #define MCE_CMD_FLASHLED 0x23 /* Flash receiver LED, 2 bytes */
88 /* Commands that query device state (all 2 bytes, unless noted) */
89 #define MCE_CMD_GETIRCFS 0x07 /* Get carrier */
90 #define MCE_CMD_GETIRTIMEOUT 0x0d /* Get timeout */
91 #define MCE_CMD_GETIRTXPORTS 0x13 /* Get tx ports */
92 #define MCE_CMD_GETIRRXPORTEN 0x15 /* Get rx ports */
93 #define MCE_CMD_GETPORTSTATUS 0x11 /* Get tx port status, 3 bytes */
94 #define MCE_CMD_GETIRNUMPORTS 0x16 /* Get number of ports */
95 #define MCE_CMD_GETWAKESOURCE 0x17 /* Get wake source */
96 #define MCE_CMD_GETEMVER 0x22 /* Get emulator interface version */
97 #define MCE_CMD_GETDEVDETAILS 0x21 /* Get device details (em ver2 only) */
98 #define MCE_CMD_GETWAKESUPPORT 0x20 /* Get wake details (em ver2 only) */
99 #define MCE_CMD_GETWAKEVERSION 0x18 /* Get wake pattern (em ver2 only) */
102 #define MCE_CMD_NOP 0xff /* No operation */
104 /* Responses to commands (non-error cases) */
105 #define MCE_RSP_EQIRCFS 0x06 /* tx carrier, 4 bytes */
106 #define MCE_RSP_EQIRTIMEOUT 0x0c /* rx timeout, 4 bytes */
107 #define MCE_RSP_GETWAKESOURCE 0x17 /* wake source, 3 bytes */
108 #define MCE_RSP_EQIRTXPORTS 0x08 /* tx port mask, 3 bytes */
109 #define MCE_RSP_EQIRRXPORTEN 0x14 /* rx port mask, 3 bytes */
110 #define MCE_RSP_GETPORTSTATUS 0x11 /* tx port status, 7 bytes */
111 #define MCE_RSP_EQIRRXCFCNT 0x15 /* rx carrier count, 4 bytes */
112 #define MCE_RSP_EQIRNUMPORTS 0x16 /* number of ports, 4 bytes */
113 #define MCE_RSP_EQWAKESUPPORT 0x20 /* wake capabilities, 3 bytes */
114 #define MCE_RSP_EQWAKEVERSION 0x18 /* wake pattern details, 6 bytes */
115 #define MCE_RSP_EQDEVDETAILS 0x21 /* device capabilities, 3 bytes */
116 #define MCE_RSP_EQEMVER 0x22 /* emulator interface ver, 3 bytes */
117 #define MCE_RSP_FLASHLED 0x23 /* success flashing LED, 2 bytes */
119 /* Responses to error cases, must send MCE_CMD_RESUME to clear them */
120 #define MCE_RSP_CMD_ILLEGAL 0xfe /* illegal command for port, 2 bytes */
121 #define MCE_RSP_TX_TIMEOUT 0x81 /* tx timed out, 2 bytes */
123 /* Misc commands/responses not defined in the MCE remote/transceiver spec */
124 #define MCE_CMD_SIG_END 0x01 /* End of signal */
125 #define MCE_CMD_PING 0x03 /* Ping device */
126 #define MCE_CMD_UNKNOWN 0x04 /* Unknown */
127 #define MCE_CMD_UNKNOWN2 0x05 /* Unknown */
128 #define MCE_CMD_UNKNOWN3 0x09 /* Unknown */
129 #define MCE_CMD_UNKNOWN4 0x0a /* Unknown */
130 #define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */
131 #define MCE_CMD_UNKNOWN5 0x0e /* Unknown */
132 #define MCE_CMD_UNKNOWN6 0x0f /* Unknown */
133 #define MCE_CMD_UNKNOWN8 0x19 /* Unknown */
134 #define MCE_CMD_UNKNOWN9 0x1b /* Unknown */
135 #define MCE_CMD_NULL 0x00 /* These show up various places... */
137 /* if buf[i] & MCE_PORT_MASK == 0x80 and buf[i] != MCE_CMD_PORT_IR,
138 * then we're looking at a raw IR data sample */
139 #define MCE_COMMAND_IRDATA 0x80
140 #define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */
142 #define VENDOR_PHILIPS 0x0471
143 #define VENDOR_SMK 0x0609
144 #define VENDOR_TATUNG 0x1460
145 #define VENDOR_GATEWAY 0x107b
146 #define VENDOR_SHUTTLE 0x1308
147 #define VENDOR_SHUTTLE2 0x051c
148 #define VENDOR_MITSUMI 0x03ee
149 #define VENDOR_TOPSEED 0x1784
150 #define VENDOR_RICAVISION 0x179d
151 #define VENDOR_ITRON 0x195d
152 #define VENDOR_FIC 0x1509
153 #define VENDOR_LG 0x043e
154 #define VENDOR_MICROSOFT 0x045e
155 #define VENDOR_FORMOSA 0x147a
156 #define VENDOR_FINTEK 0x1934
157 #define VENDOR_PINNACLE 0x2304
158 #define VENDOR_ECS 0x1019
159 #define VENDOR_WISTRON 0x0fb8
160 #define VENDOR_COMPRO 0x185b
161 #define VENDOR_NORTHSTAR 0x04eb
162 #define VENDOR_REALTEK 0x0bda
163 #define VENDOR_TIVO 0x105a
164 #define VENDOR_CONEXANT 0x0572
165 #define VENDOR_TWISTEDMELON 0x2596
166 #define VENDOR_HAUPPAUGE 0x2040
167 #define VENDOR_PCTV 0x2013
168 #define VENDOR_ADAPTEC 0x03f3
170 enum mceusb_model_type {
171 MCE_GEN2 = 0, /* Most boards */
174 MCE_GEN3_BROKEN_IRTIMEOUT,
176 MCE_GEN2_TX_INV_RX_GOOD,
182 HAUPPAUGE_CX_HYBRID_TV,
183 EVROMEDIA_FULL_HYBRID_FULLHD,
187 struct mceusb_model {
191 u32 tx_mask_normal:1;
193 u32 broken_irtimeout:1;
195 * 2nd IR receiver (short-range, wideband) for learning mode:
196 * 0, absent 2nd receiver (rx2)
198 * 2, rx2 which under counts IR carrier cycles
204 const char *rc_map; /* Allow specify a per-board map */
205 const char *name; /* per-board name */
208 static const struct mceusb_model mceusb_model[] = {
222 [MCE_GEN2_TX_INV] = {
227 [MCE_GEN2_TX_INV_RX_GOOD] = {
237 [MCE_GEN3_BROKEN_IRTIMEOUT] = {
241 .broken_irtimeout = 1
245 * In fact, the EVK is shipped without
246 * remotes, but we should have something handy,
247 * to allow testing it
249 .name = "Conexant Hybrid TV (cx231xx) MCE IR",
253 .no_tx = 1, /* tx isn't wired up at all */
254 .name = "Conexant Hybrid TV (cx231xx) MCE IR",
256 [HAUPPAUGE_CX_HYBRID_TV] = {
257 .no_tx = 1, /* eeprom says it has no tx */
258 .name = "Conexant Hybrid TV (cx231xx) MCE IR no TX",
267 .rc_map = RC_MAP_TIVO,
270 [EVROMEDIA_FULL_HYBRID_FULLHD] = {
271 .name = "Evromedia USB Full Hybrid Full HD",
273 .rc_map = RC_MAP_MSI_DIGIVOX_III,
275 [ASTROMETA_T2HYBRID] = {
276 .name = "Astrometa T2Hybrid",
278 .rc_map = RC_MAP_ASTROMETA_T2HYBRID,
282 static const struct usb_device_id mceusb_dev_table[] = {
283 /* Original Microsoft MCE IR Transceiver (often HP-branded) */
284 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d),
285 .driver_info = MCE_GEN1 },
286 /* Philips Infrared Transceiver - Sahara branded */
287 { USB_DEVICE(VENDOR_PHILIPS, 0x0608) },
288 /* Philips Infrared Transceiver - HP branded */
289 { USB_DEVICE(VENDOR_PHILIPS, 0x060c),
290 .driver_info = MCE_GEN2_TX_INV },
291 /* Philips SRM5100 */
292 { USB_DEVICE(VENDOR_PHILIPS, 0x060d) },
293 /* Philips Infrared Transceiver - Omaura */
294 { USB_DEVICE(VENDOR_PHILIPS, 0x060f) },
295 /* Philips Infrared Transceiver - Spinel plus */
296 { USB_DEVICE(VENDOR_PHILIPS, 0x0613) },
297 /* Philips eHome Infrared Transceiver */
298 { USB_DEVICE(VENDOR_PHILIPS, 0x0815) },
299 /* Philips/Spinel plus IR transceiver for ASUS */
300 { USB_DEVICE(VENDOR_PHILIPS, 0x206c) },
301 /* Philips/Spinel plus IR transceiver for ASUS */
302 { USB_DEVICE(VENDOR_PHILIPS, 0x2088) },
303 /* Philips IR transceiver (Dell branded) */
304 { USB_DEVICE(VENDOR_PHILIPS, 0x2093),
305 .driver_info = MCE_GEN2_TX_INV },
306 /* Realtek MCE IR Receiver and card reader */
307 { USB_DEVICE(VENDOR_REALTEK, 0x0161),
308 .driver_info = MULTIFUNCTION },
309 /* SMK/Toshiba G83C0004D410 */
310 { USB_DEVICE(VENDOR_SMK, 0x031d),
311 .driver_info = MCE_GEN2_TX_INV_RX_GOOD },
312 /* SMK eHome Infrared Transceiver (Sony VAIO) */
313 { USB_DEVICE(VENDOR_SMK, 0x0322),
314 .driver_info = MCE_GEN2_TX_INV },
315 /* bundled with Hauppauge PVR-150 */
316 { USB_DEVICE(VENDOR_SMK, 0x0334),
317 .driver_info = MCE_GEN2_TX_INV },
318 /* SMK eHome Infrared Transceiver */
319 { USB_DEVICE(VENDOR_SMK, 0x0338) },
320 /* SMK/I-O Data GV-MC7/RCKIT Receiver */
321 { USB_DEVICE(VENDOR_SMK, 0x0353),
322 .driver_info = MCE_GEN2_NO_TX },
323 /* SMK RXX6000 Infrared Receiver */
324 { USB_DEVICE(VENDOR_SMK, 0x0357),
325 .driver_info = MCE_GEN2_NO_TX },
326 /* Tatung eHome Infrared Transceiver */
327 { USB_DEVICE(VENDOR_TATUNG, 0x9150) },
328 /* Shuttle eHome Infrared Transceiver */
329 { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) },
330 /* Shuttle eHome Infrared Transceiver */
331 { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) },
332 /* Gateway eHome Infrared Transceiver */
333 { USB_DEVICE(VENDOR_GATEWAY, 0x3009) },
335 { USB_DEVICE(VENDOR_MITSUMI, 0x2501) },
336 /* Topseed eHome Infrared Transceiver */
337 { USB_DEVICE(VENDOR_TOPSEED, 0x0001),
338 .driver_info = MCE_GEN2_TX_INV },
339 /* Topseed HP eHome Infrared Transceiver */
340 { USB_DEVICE(VENDOR_TOPSEED, 0x0006),
341 .driver_info = MCE_GEN2_TX_INV },
342 /* Topseed eHome Infrared Transceiver */
343 { USB_DEVICE(VENDOR_TOPSEED, 0x0007),
344 .driver_info = MCE_GEN2_TX_INV },
345 /* Topseed eHome Infrared Transceiver */
346 { USB_DEVICE(VENDOR_TOPSEED, 0x0008),
347 .driver_info = MCE_GEN3 },
348 /* Topseed eHome Infrared Transceiver */
349 { USB_DEVICE(VENDOR_TOPSEED, 0x000a),
350 .driver_info = MCE_GEN2_TX_INV },
351 /* Topseed eHome Infrared Transceiver */
352 { USB_DEVICE(VENDOR_TOPSEED, 0x0011),
353 .driver_info = MCE_GEN3_BROKEN_IRTIMEOUT },
354 /* Ricavision internal Infrared Transceiver */
355 { USB_DEVICE(VENDOR_RICAVISION, 0x0010) },
356 /* Itron ione Libra Q-11 */
357 { USB_DEVICE(VENDOR_ITRON, 0x7002) },
358 /* FIC eHome Infrared Transceiver */
359 { USB_DEVICE(VENDOR_FIC, 0x9242) },
360 /* LG eHome Infrared Transceiver */
361 { USB_DEVICE(VENDOR_LG, 0x9803) },
362 /* Microsoft MCE Infrared Transceiver */
363 { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) },
364 /* Formosa eHome Infrared Transceiver */
365 { USB_DEVICE(VENDOR_FORMOSA, 0xe015) },
366 /* Formosa21 / eHome Infrared Receiver */
367 { USB_DEVICE(VENDOR_FORMOSA, 0xe016) },
368 /* Formosa aim / Trust MCE Infrared Receiver */
369 { USB_DEVICE(VENDOR_FORMOSA, 0xe017),
370 .driver_info = MCE_GEN2_NO_TX },
371 /* Formosa Industrial Computing / Beanbag Emulation Device */
372 { USB_DEVICE(VENDOR_FORMOSA, 0xe018) },
373 /* Formosa21 / eHome Infrared Receiver */
374 { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) },
375 /* Formosa Industrial Computing AIM IR605/A */
376 { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) },
377 /* Formosa Industrial Computing */
378 { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) },
379 /* Formosa Industrial Computing */
380 { USB_DEVICE(VENDOR_FORMOSA, 0xe042) },
381 /* Fintek eHome Infrared Transceiver (HP branded) */
382 { USB_DEVICE(VENDOR_FINTEK, 0x5168),
383 .driver_info = MCE_GEN2_TX_INV },
384 /* Fintek eHome Infrared Transceiver */
385 { USB_DEVICE(VENDOR_FINTEK, 0x0602) },
386 /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */
387 { USB_DEVICE(VENDOR_FINTEK, 0x0702) },
388 /* Pinnacle Remote Kit */
389 { USB_DEVICE(VENDOR_PINNACLE, 0x0225),
390 .driver_info = MCE_GEN3 },
391 /* Elitegroup Computer Systems IR */
392 { USB_DEVICE(VENDOR_ECS, 0x0f38) },
393 /* Wistron Corp. eHome Infrared Receiver */
394 { USB_DEVICE(VENDOR_WISTRON, 0x0002) },
396 { USB_DEVICE(VENDOR_COMPRO, 0x3020) },
398 { USB_DEVICE(VENDOR_COMPRO, 0x3082) },
399 /* Northstar Systems, Inc. eHome Infrared Transceiver */
400 { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) },
401 /* TiVo PC IR Receiver */
402 { USB_DEVICE(VENDOR_TIVO, 0x2000),
403 .driver_info = TIVO_KIT },
404 /* Conexant Hybrid TV "Shelby" Polaris SDK */
405 { USB_DEVICE(VENDOR_CONEXANT, 0x58a1),
406 .driver_info = POLARIS_EVK },
407 /* Conexant Hybrid TV RDU253S Polaris */
408 { USB_DEVICE(VENDOR_CONEXANT, 0x58a5),
409 .driver_info = CX_HYBRID_TV },
410 /* Twisted Melon Inc. - Manta Mini Receiver */
411 { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8008) },
412 /* Twisted Melon Inc. - Manta Pico Receiver */
413 { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8016) },
414 /* Twisted Melon Inc. - Manta Transceiver */
415 { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8042) },
416 /* Hauppauge WINTV-HVR-HVR 930C-HD - based on cx231xx */
417 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb130),
418 .driver_info = HAUPPAUGE_CX_HYBRID_TV },
419 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb131),
420 .driver_info = HAUPPAUGE_CX_HYBRID_TV },
421 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb138),
422 .driver_info = HAUPPAUGE_CX_HYBRID_TV },
423 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb139),
424 .driver_info = HAUPPAUGE_CX_HYBRID_TV },
425 /* Hauppauge WinTV-HVR-935C - based on cx231xx */
426 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb151),
427 .driver_info = HAUPPAUGE_CX_HYBRID_TV },
428 /* Hauppauge WinTV-HVR-955Q - based on cx231xx */
429 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb123),
430 .driver_info = HAUPPAUGE_CX_HYBRID_TV },
431 /* Hauppauge WinTV-HVR-975 - based on cx231xx */
432 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb150),
433 .driver_info = HAUPPAUGE_CX_HYBRID_TV },
434 { USB_DEVICE(VENDOR_PCTV, 0x0259),
435 .driver_info = HAUPPAUGE_CX_HYBRID_TV },
436 { USB_DEVICE(VENDOR_PCTV, 0x025e),
437 .driver_info = HAUPPAUGE_CX_HYBRID_TV },
438 /* Adaptec / HP eHome Receiver */
439 { USB_DEVICE(VENDOR_ADAPTEC, 0x0094) },
440 /* Evromedia USB Full Hybrid Full HD */
441 { USB_DEVICE(0x1b80, 0xd3b2),
442 .driver_info = EVROMEDIA_FULL_HYBRID_FULLHD },
443 /* Astrometa T2hybrid */
444 { USB_DEVICE(0x15f4, 0x0135),
445 .driver_info = ASTROMETA_T2HYBRID },
447 /* Terminating entry */
451 /* data structure for each usb transceiver */
456 /* optional features we can enable */
457 bool carrier_report_enabled;
458 bool wideband_rx_enabled; /* aka learning mode, short-range rx */
460 /* core device bits */
464 struct usb_device *usbdev;
466 unsigned int pipe_in;
467 struct usb_endpoint_descriptor *usb_ep_out;
468 unsigned int pipe_out;
470 /* buffers and dma */
471 unsigned char *buf_in;
482 u8 cmd, rem; /* Remaining IR data bytes in packet */
486 u32 tx_mask_normal:1;
487 u32 microsoft_gen1:1;
492 /* transmit support */
494 unsigned char tx_mask;
498 enum mceusb_model_type model;
500 bool need_reset; /* flag to issue a device resume cmd */
501 u8 emver; /* emulator interface version */
502 u8 num_txports; /* number of transmit ports */
503 u8 num_rxports; /* number of receive sensors */
504 u8 txports_cabled; /* bitmask of transmitters with cable */
505 u8 rxports_active; /* bitmask of active receive sensors */
506 bool learning_active; /* wideband rx is active */
508 /* receiver carrier frequency detection support */
509 u32 pulse_tunit; /* IR pulse "on" cumulative time units */
510 u32 pulse_count; /* pulse "on" count in measurement interval */
513 * support for async error handler mceusb_deferred_kevent()
514 * where usb_clear_halt(), usb_reset_configuration(),
515 * usb_reset_device(), etc. must be done in process context
517 struct work_struct kevent;
518 unsigned long kevent_flags;
519 # define EVENT_TX_HALT 0
520 # define EVENT_RX_HALT 1
523 /* MCE Device Command Strings, generally a port and command pair */
524 static char DEVICE_RESUME[] = {MCE_CMD_NULL, MCE_CMD_PORT_SYS,
526 static char GET_REVISION[] = {MCE_CMD_PORT_SYS, MCE_CMD_G_REVISION};
527 static char GET_EMVER[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETEMVER};
528 static char GET_WAKEVERSION[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETWAKEVERSION};
529 static char FLASH_LED[] = {MCE_CMD_PORT_SYS, MCE_CMD_FLASHLED};
530 static char GET_UNKNOWN2[] = {MCE_CMD_PORT_IR, MCE_CMD_UNKNOWN2};
531 static char GET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRCFS};
532 static char GET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTIMEOUT};
533 static char GET_NUM_PORTS[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRNUMPORTS};
534 static char GET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTXPORTS};
535 static char GET_RX_SENSOR[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRRXPORTEN};
536 /* sub in desired values in lower byte or bytes for full command */
537 /* FIXME: make use of these for transmit.
538 static char SET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR,
539 MCE_CMD_SETIRCFS, 0x00, 0x00};
540 static char SET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_SETIRTXPORTS, 0x00};
541 static char SET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR,
542 MCE_CMD_SETIRTIMEOUT, 0x00, 0x00};
543 static char SET_RX_SENSOR[] = {MCE_CMD_PORT_IR,
544 MCE_RSP_EQIRRXPORTEN, 0x00};
547 static int mceusb_cmd_datasize(u8 cmd, u8 subcmd)
553 if (subcmd == MCE_CMD_PORT_SYS)
556 case MCE_CMD_PORT_SYS:
558 case MCE_RSP_GETPORTSTATUS:
561 case MCE_RSP_EQWAKEVERSION:
564 case MCE_CMD_G_REVISION:
567 case MCE_RSP_EQWAKESUPPORT:
568 case MCE_RSP_GETWAKESOURCE:
569 case MCE_RSP_EQDEVDETAILS:
570 case MCE_RSP_EQEMVER:
575 case MCE_CMD_PORT_IR:
577 case MCE_CMD_UNKNOWN:
578 case MCE_RSP_EQIRCFS:
579 case MCE_RSP_EQIRTIMEOUT:
580 case MCE_RSP_EQIRRXCFCNT:
581 case MCE_RSP_EQIRNUMPORTS:
584 case MCE_CMD_SIG_END:
585 case MCE_RSP_EQIRTXPORTS:
586 case MCE_RSP_EQIRRXPORTEN:
594 static void mceusb_dev_printdata(struct mceusb_dev *ir, u8 *buf, int buf_len,
595 int offset, int len, bool out)
597 #if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
599 u8 cmd, subcmd, *data;
600 struct device *dev = ir->dev;
604 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
605 if (ir->flags.microsoft_gen1 && !out && !offset)
611 dev_dbg(dev, "%cx data[%d]: %*ph (len=%d sz=%d)",
612 (out ? 't' : 'r'), offset,
613 min(len, buf_len - offset), buf + offset, len, buf_len);
615 inout = out ? "Request" : "Got";
617 start = offset + skip;
618 cmd = buf[start] & 0xff;
619 subcmd = buf[start + 1] & 0xff;
620 data = buf + start + 2;
624 if (subcmd == MCE_CMD_NULL)
626 if ((subcmd == MCE_CMD_PORT_SYS) &&
627 (data[0] == MCE_CMD_RESUME))
628 dev_dbg(dev, "Device resume requested");
630 dev_dbg(dev, "Unknown command 0x%02x 0x%02x",
633 case MCE_CMD_PORT_SYS:
635 case MCE_RSP_EQEMVER:
637 dev_dbg(dev, "Emulator interface version %x",
640 case MCE_CMD_G_REVISION:
642 dev_dbg(dev, "Get hw/sw rev?");
644 dev_dbg(dev, "hw/sw rev %*ph",
648 dev_dbg(dev, "Device resume requested");
650 case MCE_RSP_CMD_ILLEGAL:
651 dev_dbg(dev, "Illegal PORT_SYS command");
653 case MCE_RSP_EQWAKEVERSION:
655 dev_dbg(dev, "Wake version, proto: 0x%02x, payload: 0x%02x, address: 0x%02x, version: 0x%02x",
656 data[0], data[1], data[2], data[3]);
658 case MCE_RSP_GETPORTSTATUS:
660 /* We use data1 + 1 here, to match hw labels */
661 dev_dbg(dev, "TX port %d: blaster is%s connected",
662 data[0] + 1, data[3] ? " not" : "");
664 case MCE_CMD_FLASHLED:
665 dev_dbg(dev, "Attempting to flash LED");
668 dev_dbg(dev, "Unknown command 0x%02x 0x%02x",
673 case MCE_CMD_PORT_IR:
675 case MCE_CMD_SIG_END:
676 dev_dbg(dev, "End of signal");
679 dev_dbg(dev, "Ping");
681 case MCE_CMD_UNKNOWN:
682 dev_dbg(dev, "Resp to 9f 05 of 0x%02x 0x%02x",
685 case MCE_RSP_EQIRCFS:
686 period = DIV_ROUND_CLOSEST((1U << data[0] * 2) *
690 carrier = (1000 * 1000) / period;
691 dev_dbg(dev, "%s carrier of %u Hz (period %uus)",
692 inout, carrier, period);
694 case MCE_CMD_GETIRCFS:
695 dev_dbg(dev, "Get carrier mode and freq");
697 case MCE_RSP_EQIRTXPORTS:
698 dev_dbg(dev, "%s transmit blaster mask of 0x%02x",
701 case MCE_RSP_EQIRTIMEOUT:
702 /* value is in units of 50us, so x*50/1000 ms */
703 period = ((data[0] << 8) | data[1]) *
704 MCE_TIME_UNIT / 1000;
705 dev_dbg(dev, "%s receive timeout of %d ms",
708 case MCE_CMD_GETIRTIMEOUT:
709 dev_dbg(dev, "Get receive timeout");
711 case MCE_CMD_GETIRTXPORTS:
712 dev_dbg(dev, "Get transmit blaster mask");
714 case MCE_RSP_EQIRRXPORTEN:
715 dev_dbg(dev, "%s %s-range receive sensor in use",
716 inout, data[0] == 0x02 ? "short" : "long");
718 case MCE_CMD_GETIRRXPORTEN:
719 /* aka MCE_RSP_EQIRRXCFCNT */
721 dev_dbg(dev, "Get receive sensor");
723 dev_dbg(dev, "RX carrier cycle count: %d",
724 ((data[0] << 8) | data[1]));
726 case MCE_RSP_EQIRNUMPORTS:
729 dev_dbg(dev, "Num TX ports: %x, num RX ports: %x",
732 case MCE_RSP_CMD_ILLEGAL:
733 dev_dbg(dev, "Illegal PORT_IR command");
735 case MCE_RSP_TX_TIMEOUT:
736 dev_dbg(dev, "IR TX timeout (TX buffer underrun)");
739 dev_dbg(dev, "Unknown command 0x%02x 0x%02x",
748 if (cmd == MCE_IRDATA_TRAILER)
749 dev_dbg(dev, "End of raw IR data");
750 else if ((cmd != MCE_CMD_PORT_IR) &&
751 ((cmd & MCE_PORT_MASK) == MCE_COMMAND_IRDATA))
752 dev_dbg(dev, "Raw IR data, %d pulse/space samples",
753 cmd & MCE_PACKET_LENGTH_MASK);
758 * Schedule work that can't be done in interrupt handlers
759 * (mceusb_dev_recv() and mce_write_callback()) nor tasklets.
760 * Invokes mceusb_deferred_kevent() for recovering from
761 * error events specified by the kevent bit field.
763 static void mceusb_defer_kevent(struct mceusb_dev *ir, int kevent)
765 set_bit(kevent, &ir->kevent_flags);
766 if (!schedule_work(&ir->kevent))
767 dev_err(ir->dev, "kevent %d may have been dropped", kevent);
769 dev_dbg(ir->dev, "kevent %d scheduled", kevent);
772 static void mce_write_callback(struct urb *urb)
777 complete(urb->context);
781 * Write (TX/send) data to MCE device USB endpoint out.
782 * Used for IR blaster TX and MCE device commands.
784 * Return: The number of bytes written (> 0) or errno (< 0).
786 static int mce_write(struct mceusb_dev *ir, u8 *data, int size)
790 struct device *dev = ir->dev;
791 unsigned char *buf_out;
792 struct completion tx_done;
793 unsigned long expire;
794 unsigned long ret_wait;
796 mceusb_dev_printdata(ir, data, size, 0, size, true);
798 urb = usb_alloc_urb(0, GFP_KERNEL);
799 if (unlikely(!urb)) {
800 dev_err(dev, "Error: mce write couldn't allocate urb");
804 buf_out = kmalloc(size, GFP_KERNEL);
810 init_completion(&tx_done);
813 if (usb_endpoint_xfer_int(ir->usb_ep_out))
814 usb_fill_int_urb(urb, ir->usbdev, ir->pipe_out,
815 buf_out, size, mce_write_callback, &tx_done,
816 ir->usb_ep_out->bInterval);
818 usb_fill_bulk_urb(urb, ir->usbdev, ir->pipe_out,
819 buf_out, size, mce_write_callback, &tx_done);
820 memcpy(buf_out, data, size);
822 ret = usb_submit_urb(urb, GFP_KERNEL);
824 dev_err(dev, "Error: mce write submit urb error = %d", ret);
830 expire = msecs_to_jiffies(USB_TX_TIMEOUT);
831 ret_wait = wait_for_completion_timeout(&tx_done, expire);
833 dev_err(dev, "Error: mce write timed out (expire = %lu (%dms))",
834 expire, USB_TX_TIMEOUT);
836 ret = (urb->status == -ENOENT ? -ETIMEDOUT : urb->status);
841 ret = urb->actual_length; /* bytes written */
843 switch (urb->status) {
855 dev_err(ir->dev, "Error: mce write urb status = %d (TX HALT)",
857 mceusb_defer_kevent(ir, EVENT_TX_HALT);
861 dev_err(ir->dev, "Error: mce write urb status = %d",
866 dev_dbg(dev, "tx done status = %d (wait = %lu, expire = %lu (%dms), urb->actual_length = %d, urb->status = %d)",
867 ret, ret_wait, expire, USB_TX_TIMEOUT,
868 urb->actual_length, urb->status);
876 static void mce_command_out(struct mceusb_dev *ir, u8 *data, int size)
878 int rsize = sizeof(DEVICE_RESUME);
880 if (ir->need_reset) {
881 ir->need_reset = false;
882 mce_write(ir, DEVICE_RESUME, rsize);
886 mce_write(ir, data, size);
891 * Transmit IR out the MCE device IR blaster port(s).
893 * Convert IR pulse/space sequence from LIRC to MCE format.
894 * Break up a long IR sequence into multiple parts (MCE IR data packets).
896 * u32 txbuf[] consists of IR pulse, space, ..., and pulse times in usec.
897 * Pulses and spaces are implicit by their position.
898 * The first IR sample, txbuf[0], is always a pulse.
900 * u8 irbuf[] consists of multiple IR data packets for the MCE device.
901 * A packet is 1 u8 MCE_IRDATA_HEADER and up to 30 u8 IR samples.
902 * An IR sample is 1-bit pulse/space flag with 7-bit time
903 * in MCE time units (50usec).
905 * Return: The number of IR samples sent (> 0) or errno (< 0).
907 static int mceusb_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count)
909 struct mceusb_dev *ir = dev->priv;
910 u8 cmdbuf[3] = { MCE_CMD_PORT_IR, MCE_CMD_SETIRTXPORTS, 0x00 };
911 u8 irbuf[MCE_IRBUF_SIZE];
913 unsigned int irsample;
916 /* Send the set TX ports command */
917 cmdbuf[2] = ir->tx_mask;
918 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
920 /* Generate mce IR data packet */
921 for (i = 0; i < count; i++) {
922 irsample = txbuf[i] / MCE_TIME_UNIT;
924 /* loop to support long pulses/spaces > 6350us (127*50us) */
925 while (irsample > 0) {
926 /* Insert IR header every 30th entry */
927 if (ircount % MCE_PACKET_SIZE == 0) {
928 /* Room for IR header and one IR sample? */
929 if (ircount >= MCE_IRBUF_SIZE - 1) {
930 /* Send near full buffer */
931 ret = mce_write(ir, irbuf, ircount);
936 irbuf[ircount++] = MCE_IRDATA_HEADER;
939 /* Insert IR sample */
940 if (irsample <= MCE_MAX_PULSE_LENGTH) {
941 irbuf[ircount] = irsample;
944 irbuf[ircount] = MCE_MAX_PULSE_LENGTH;
945 irsample -= MCE_MAX_PULSE_LENGTH;
951 irbuf[ircount] |= (i & 1 ? 0 : MCE_PULSE_BIT);
954 /* IR buffer full? */
955 if (ircount >= MCE_IRBUF_SIZE) {
956 /* Fix packet length in last header */
957 length = ircount % MCE_PACKET_SIZE;
959 irbuf[ircount - length] -=
960 MCE_PACKET_SIZE - length;
961 /* Send full buffer */
962 ret = mce_write(ir, irbuf, ircount);
968 } /* after for loop, 0 <= ircount < MCE_IRBUF_SIZE */
970 /* Fix packet length in last header */
971 length = ircount % MCE_PACKET_SIZE;
973 irbuf[ircount - length] -= MCE_PACKET_SIZE - length;
975 /* Append IR trailer (0x80) to final partial (or empty) IR buffer */
976 irbuf[ircount++] = MCE_IRDATA_TRAILER;
978 /* Send final buffer */
979 ret = mce_write(ir, irbuf, ircount);
986 /* Sets active IR outputs -- mce devices typically have two */
987 static int mceusb_set_tx_mask(struct rc_dev *dev, u32 mask)
989 struct mceusb_dev *ir = dev->priv;
991 /* return number of transmitters */
992 int emitters = ir->num_txports ? ir->num_txports : 2;
994 if (mask >= (1 << emitters))
997 if (ir->flags.tx_mask_normal)
1000 ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ?
1001 mask ^ MCE_DEFAULT_TX_MASK : mask) << 1;
1006 /* Sets the send carrier frequency and mode */
1007 static int mceusb_set_tx_carrier(struct rc_dev *dev, u32 carrier)
1009 struct mceusb_dev *ir = dev->priv;
1011 int prescaler = 0, divisor = 0;
1012 unsigned char cmdbuf[4] = { MCE_CMD_PORT_IR,
1013 MCE_CMD_SETIRCFS, 0x00, 0x00 };
1015 /* Carrier has changed */
1016 if (ir->carrier != carrier) {
1019 ir->carrier = carrier;
1020 cmdbuf[2] = MCE_CMD_SIG_END;
1021 cmdbuf[3] = MCE_IRDATA_TRAILER;
1022 dev_dbg(ir->dev, "disabling carrier modulation");
1023 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1027 for (prescaler = 0; prescaler < 4; ++prescaler) {
1028 divisor = (clk >> (2 * prescaler)) / carrier;
1029 if (divisor <= 0xff) {
1030 ir->carrier = carrier;
1031 cmdbuf[2] = prescaler;
1032 cmdbuf[3] = divisor;
1033 dev_dbg(ir->dev, "requesting %u HZ carrier",
1036 /* Transmit new carrier to mce device */
1037 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1049 static int mceusb_set_timeout(struct rc_dev *dev, unsigned int timeout)
1051 u8 cmdbuf[4] = { MCE_CMD_PORT_IR, MCE_CMD_SETIRTIMEOUT, 0, 0 };
1052 struct mceusb_dev *ir = dev->priv;
1055 units = DIV_ROUND_CLOSEST(timeout, US_TO_NS(MCE_TIME_UNIT));
1057 cmdbuf[2] = units >> 8;
1060 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1062 /* get receiver timeout value */
1063 mce_command_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
1069 * Select or deselect the 2nd receiver port.
1070 * Second receiver is learning mode, wide-band, short-range receiver.
1071 * Only one receiver (long or short range) may be active at a time.
1073 static int mceusb_set_rx_wideband(struct rc_dev *dev, int enable)
1075 struct mceusb_dev *ir = dev->priv;
1076 unsigned char cmdbuf[3] = { MCE_CMD_PORT_IR,
1077 MCE_CMD_SETIRRXPORTEN, 0x00 };
1079 dev_dbg(ir->dev, "select %s-range receive sensor",
1080 enable ? "short" : "long");
1082 ir->wideband_rx_enabled = true;
1083 cmdbuf[2] = 2; /* port 2 is short range receiver */
1085 ir->wideband_rx_enabled = false;
1086 cmdbuf[2] = 1; /* port 1 is long range receiver */
1088 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1089 /* response from device sets ir->learning_active */
1095 * Enable/disable receiver carrier frequency pass through reporting.
1096 * Only the short-range receiver has carrier frequency measuring capability.
1097 * Implicitly select this receiver when enabling carrier frequency reporting.
1099 static int mceusb_set_rx_carrier_report(struct rc_dev *dev, int enable)
1101 struct mceusb_dev *ir = dev->priv;
1102 unsigned char cmdbuf[3] = { MCE_CMD_PORT_IR,
1103 MCE_CMD_SETIRRXPORTEN, 0x00 };
1105 dev_dbg(ir->dev, "%s short-range receiver carrier reporting",
1106 enable ? "enable" : "disable");
1108 ir->carrier_report_enabled = true;
1109 if (!ir->learning_active) {
1110 cmdbuf[2] = 2; /* port 2 is short range receiver */
1111 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1114 ir->carrier_report_enabled = false;
1116 * Revert to normal (long-range) receiver only if the
1117 * wideband (short-range) receiver wasn't explicitly
1120 if (ir->learning_active && !ir->wideband_rx_enabled) {
1121 cmdbuf[2] = 1; /* port 1 is long range receiver */
1122 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1130 * We don't do anything but print debug spew for many of the command bits
1131 * we receive from the hardware, but some of them are useful information
1132 * we want to store so that we can use them.
1134 static void mceusb_handle_command(struct mceusb_dev *ir, int index)
1136 struct ir_raw_event rawir = {};
1137 u8 hi = ir->buf_in[index + 1] & 0xff;
1138 u8 lo = ir->buf_in[index + 2] & 0xff;
1142 switch (ir->buf_in[index]) {
1143 /* the one and only 5-byte return value command */
1144 case MCE_RSP_GETPORTSTATUS:
1145 if ((ir->buf_in[index + 4] & 0xff) == 0x00)
1146 ir->txports_cabled |= 1 << hi;
1149 /* 2-byte return value commands */
1150 case MCE_RSP_EQIRTIMEOUT:
1151 ir->rc->timeout = US_TO_NS((hi << 8 | lo) * MCE_TIME_UNIT);
1153 case MCE_RSP_EQIRNUMPORTS:
1154 ir->num_txports = hi;
1155 ir->num_rxports = lo;
1157 case MCE_RSP_EQIRRXCFCNT:
1159 * The carrier cycle counter can overflow and wrap around
1160 * without notice from the device. So frequency measurement
1161 * will be inaccurate with long duration IR.
1163 * The long-range (non learning) receiver always reports
1164 * zero count so we always ignore its report.
1166 if (ir->carrier_report_enabled && ir->learning_active &&
1167 ir->pulse_tunit > 0) {
1168 carrier_cycles = (hi << 8 | lo);
1170 * Adjust carrier cycle count by adding
1171 * 1 missed count per pulse "on"
1173 cycles_fix = ir->flags.rx2 == 2 ? ir->pulse_count : 0;
1174 rawir.carrier_report = 1;
1175 rawir.carrier = (1000000u / MCE_TIME_UNIT) *
1176 (carrier_cycles + cycles_fix) /
1178 dev_dbg(ir->dev, "RX carrier frequency %u Hz (pulse count = %u, cycles = %u, duration = %u, rx2 = %u)",
1179 rawir.carrier, ir->pulse_count, carrier_cycles,
1180 ir->pulse_tunit, ir->flags.rx2);
1181 ir_raw_event_store(ir->rc, &rawir);
1185 /* 1-byte return value commands */
1186 case MCE_RSP_EQEMVER:
1189 case MCE_RSP_EQIRTXPORTS:
1192 case MCE_RSP_EQIRRXPORTEN:
1193 ir->learning_active = ((hi & 0x02) == 0x02);
1194 if (ir->rxports_active != hi) {
1195 dev_info(ir->dev, "%s-range (0x%x) receiver active",
1196 ir->learning_active ? "short" : "long", hi);
1197 ir->rxports_active = hi;
1200 case MCE_RSP_CMD_ILLEGAL:
1201 case MCE_RSP_TX_TIMEOUT:
1202 ir->need_reset = true;
1209 static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
1211 struct ir_raw_event rawir = {};
1215 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
1216 if (ir->flags.microsoft_gen1)
1219 /* if there's no data, just return now */
1223 for (; i < buf_len; i++) {
1224 switch (ir->parser_state) {
1226 ir->rem = mceusb_cmd_datasize(ir->cmd, ir->buf_in[i]);
1227 mceusb_dev_printdata(ir, ir->buf_in, buf_len, i - 1,
1228 ir->rem + 2, false);
1229 mceusb_handle_command(ir, i);
1230 ir->parser_state = CMD_DATA;
1234 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);
1235 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK);
1236 if (unlikely(!rawir.duration)) {
1237 dev_dbg(ir->dev, "nonsensical irdata %02x with duration 0",
1242 ir->pulse_tunit += rawir.duration;
1245 rawir.duration *= US_TO_NS(MCE_TIME_UNIT);
1247 dev_dbg(ir->dev, "Storing %s %u ns (%02x)",
1248 rawir.pulse ? "pulse" : "space",
1249 rawir.duration, ir->buf_in[i]);
1251 if (ir_raw_event_store_with_filter(ir->rc, &rawir))
1258 /* decode mce packets of the form (84),AA,BB,CC,DD */
1259 /* IR data packets can span USB messages - rem */
1260 ir->cmd = ir->buf_in[i];
1261 if ((ir->cmd == MCE_CMD_PORT_IR) ||
1262 ((ir->cmd & MCE_PORT_MASK) !=
1263 MCE_COMMAND_IRDATA)) {
1264 ir->parser_state = SUBCMD;
1267 ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK);
1268 mceusb_dev_printdata(ir, ir->buf_in, buf_len,
1269 i, ir->rem + 1, false);
1271 ir->parser_state = PARSE_IRDATA;
1273 struct ir_raw_event ev = {
1275 .duration = ir->rc->timeout
1278 if (ir_raw_event_store_with_filter(ir->rc,
1281 ir->pulse_tunit = 0;
1282 ir->pulse_count = 0;
1287 if (ir->parser_state != CMD_HEADER && !ir->rem)
1288 ir->parser_state = CMD_HEADER;
1291 dev_dbg(ir->dev, "processed IR data");
1292 ir_raw_event_handle(ir->rc);
1296 static void mceusb_dev_recv(struct urb *urb)
1298 struct mceusb_dev *ir;
1305 usb_unlink_urb(urb);
1309 switch (urb->status) {
1312 mceusb_process_ir_data(ir, urb->actual_length);
1319 usb_unlink_urb(urb);
1323 dev_err(ir->dev, "Error: urb status = %d (RX HALT)",
1325 mceusb_defer_kevent(ir, EVENT_RX_HALT);
1329 dev_err(ir->dev, "Error: urb status = %d", urb->status);
1333 usb_submit_urb(urb, GFP_ATOMIC);
1336 static void mceusb_get_emulator_version(struct mceusb_dev *ir)
1338 /* If we get no reply or an illegal command reply, its ver 1, says MS */
1340 mce_command_out(ir, GET_EMVER, sizeof(GET_EMVER));
1343 static void mceusb_gen1_init(struct mceusb_dev *ir)
1346 struct device *dev = ir->dev;
1349 data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL);
1351 dev_err(dev, "%s: memory allocation failed!", __func__);
1356 * This is a strange one. Windows issues a set address to the device
1357 * on the receive control pipe and expect a certain value pair back
1359 ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
1360 USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
1361 data, USB_CTRL_MSG_SZ, HZ * 3);
1362 dev_dbg(dev, "set address - ret = %d", ret);
1363 dev_dbg(dev, "set address - data[0] = %d, data[1] = %d",
1366 /* set feature: bit rate 38400 bps */
1367 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
1368 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
1369 0xc04e, 0x0000, NULL, 0, HZ * 3);
1371 dev_dbg(dev, "set feature - ret = %d", ret);
1373 /* bRequest 4: set char length to 8 bits */
1374 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
1376 0x0808, 0x0000, NULL, 0, HZ * 3);
1377 dev_dbg(dev, "set char length - retB = %d", ret);
1379 /* bRequest 2: set handshaking to use DTR/DSR */
1380 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
1382 0x0000, 0x0100, NULL, 0, HZ * 3);
1383 dev_dbg(dev, "set handshake - retC = %d", ret);
1386 mce_command_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME));
1388 /* get hw/sw revision? */
1389 mce_command_out(ir, GET_REVISION, sizeof(GET_REVISION));
1394 static void mceusb_gen2_init(struct mceusb_dev *ir)
1397 mce_command_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME));
1399 /* get wake version (protocol, key, address) */
1400 mce_command_out(ir, GET_WAKEVERSION, sizeof(GET_WAKEVERSION));
1402 /* unknown what this one actually returns... */
1403 mce_command_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2));
1406 static void mceusb_get_parameters(struct mceusb_dev *ir)
1409 unsigned char cmdbuf[3] = { MCE_CMD_PORT_SYS,
1410 MCE_CMD_GETPORTSTATUS, 0x00 };
1412 /* defaults, if the hardware doesn't support querying */
1413 ir->num_txports = 2;
1414 ir->num_rxports = 2;
1416 /* get number of tx and rx ports */
1417 mce_command_out(ir, GET_NUM_PORTS, sizeof(GET_NUM_PORTS));
1419 /* get the carrier and frequency */
1420 mce_command_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));
1422 if (ir->num_txports && !ir->flags.no_tx)
1423 /* get the transmitter bitmask */
1424 mce_command_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
1426 /* get receiver timeout value */
1427 mce_command_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
1429 /* get receiver sensor setting */
1430 mce_command_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));
1432 for (i = 0; i < ir->num_txports; i++) {
1434 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1438 static void mceusb_flash_led(struct mceusb_dev *ir)
1443 mce_command_out(ir, FLASH_LED, sizeof(FLASH_LED));
1447 * Workqueue function
1448 * for resetting or recovering device after occurrence of error events
1449 * specified in ir->kevent bit field.
1450 * Function runs (via schedule_work()) in non-interrupt context, for
1451 * calls here (such as usb_clear_halt()) requiring non-interrupt context.
1453 static void mceusb_deferred_kevent(struct work_struct *work)
1455 struct mceusb_dev *ir =
1456 container_of(work, struct mceusb_dev, kevent);
1459 if (test_bit(EVENT_RX_HALT, &ir->kevent_flags)) {
1460 usb_unlink_urb(ir->urb_in);
1461 status = usb_clear_halt(ir->usbdev, ir->pipe_in);
1463 dev_err(ir->dev, "rx clear halt error %d",
1466 clear_bit(EVENT_RX_HALT, &ir->kevent_flags);
1468 status = usb_submit_urb(ir->urb_in, GFP_KERNEL);
1471 "rx unhalt submit urb error %d",
1477 if (test_bit(EVENT_TX_HALT, &ir->kevent_flags)) {
1478 status = usb_clear_halt(ir->usbdev, ir->pipe_out);
1480 dev_err(ir->dev, "tx clear halt error %d", status);
1481 clear_bit(EVENT_TX_HALT, &ir->kevent_flags);
1485 static struct rc_dev *mceusb_init_rc_dev(struct mceusb_dev *ir)
1487 struct usb_device *udev = ir->usbdev;
1488 struct device *dev = ir->dev;
1492 rc = rc_allocate_device(RC_DRIVER_IR_RAW);
1494 dev_err(dev, "remote dev allocation failed");
1498 snprintf(ir->name, sizeof(ir->name), "%s (%04x:%04x)",
1499 mceusb_model[ir->model].name ?
1500 mceusb_model[ir->model].name :
1501 "Media Center Ed. eHome Infrared Remote Transceiver",
1502 le16_to_cpu(ir->usbdev->descriptor.idVendor),
1503 le16_to_cpu(ir->usbdev->descriptor.idProduct));
1505 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));
1507 rc->device_name = ir->name;
1508 rc->input_phys = ir->phys;
1509 usb_to_input_id(ir->usbdev, &rc->input_id);
1510 rc->dev.parent = dev;
1512 rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
1513 rc->min_timeout = US_TO_NS(MCE_TIME_UNIT);
1514 rc->timeout = MS_TO_NS(100);
1515 if (!mceusb_model[ir->model].broken_irtimeout) {
1516 rc->s_timeout = mceusb_set_timeout;
1517 rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT;
1520 * If we can't set the timeout using CMD_SETIRTIMEOUT, we can
1521 * rely on software timeouts for timeouts < 100ms.
1523 rc->max_timeout = rc->timeout;
1525 if (!ir->flags.no_tx) {
1526 rc->s_tx_mask = mceusb_set_tx_mask;
1527 rc->s_tx_carrier = mceusb_set_tx_carrier;
1528 rc->tx_ir = mceusb_tx_ir;
1530 if (ir->flags.rx2 > 0) {
1531 rc->s_learning_mode = mceusb_set_rx_wideband;
1532 rc->s_carrier_report = mceusb_set_rx_carrier_report;
1534 rc->driver_name = DRIVER_NAME;
1536 switch (le16_to_cpu(udev->descriptor.idVendor)) {
1537 case VENDOR_HAUPPAUGE:
1538 rc->map_name = RC_MAP_HAUPPAUGE;
1541 rc->map_name = RC_MAP_PINNACLE_PCTV_HD;
1544 rc->map_name = RC_MAP_RC6_MCE;
1546 if (mceusb_model[ir->model].rc_map)
1547 rc->map_name = mceusb_model[ir->model].rc_map;
1549 ret = rc_register_device(rc);
1551 dev_err(dev, "remote dev registration failed");
1562 static int mceusb_dev_probe(struct usb_interface *intf,
1563 const struct usb_device_id *id)
1565 struct usb_device *dev = interface_to_usbdev(intf);
1566 struct usb_host_interface *idesc;
1567 struct usb_endpoint_descriptor *ep = NULL;
1568 struct usb_endpoint_descriptor *ep_in = NULL;
1569 struct usb_endpoint_descriptor *ep_out = NULL;
1570 struct mceusb_dev *ir = NULL;
1571 int pipe, maxp, i, res;
1572 char buf[63], name[128] = "";
1573 enum mceusb_model_type model = id->driver_info;
1575 bool is_microsoft_gen1;
1576 bool tx_mask_normal;
1579 dev_dbg(&intf->dev, "%s called", __func__);
1581 idesc = intf->cur_altsetting;
1583 is_gen3 = mceusb_model[model].mce_gen3;
1584 is_microsoft_gen1 = mceusb_model[model].mce_gen1;
1585 tx_mask_normal = mceusb_model[model].tx_mask_normal;
1586 ir_intfnum = mceusb_model[model].ir_intfnum;
1588 /* There are multi-function devices with non-IR interfaces */
1589 if (idesc->desc.bInterfaceNumber != ir_intfnum)
1592 /* step through the endpoints to find first bulk in and out endpoint */
1593 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {
1594 ep = &idesc->endpoint[i].desc;
1596 if (ep_in == NULL) {
1597 if (usb_endpoint_is_bulk_in(ep)) {
1599 dev_dbg(&intf->dev, "acceptable bulk inbound endpoint found\n");
1600 } else if (usb_endpoint_is_int_in(ep)) {
1602 ep_in->bInterval = 1;
1603 dev_dbg(&intf->dev, "acceptable interrupt inbound endpoint found\n");
1607 if (ep_out == NULL) {
1608 if (usb_endpoint_is_bulk_out(ep)) {
1610 dev_dbg(&intf->dev, "acceptable bulk outbound endpoint found\n");
1611 } else if (usb_endpoint_is_int_out(ep)) {
1613 ep_out->bInterval = 1;
1614 dev_dbg(&intf->dev, "acceptable interrupt outbound endpoint found\n");
1618 if (!ep_in || !ep_out) {
1619 dev_dbg(&intf->dev, "required endpoints not found\n");
1623 if (usb_endpoint_xfer_int(ep_in))
1624 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
1626 pipe = usb_rcvbulkpipe(dev, ep_in->bEndpointAddress);
1627 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
1629 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
1631 goto mem_alloc_fail;
1634 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in);
1636 goto buf_in_alloc_fail;
1638 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
1640 goto urb_in_alloc_fail;
1642 ir->usbdev = usb_get_dev(dev);
1643 ir->dev = &intf->dev;
1645 ir->flags.microsoft_gen1 = is_microsoft_gen1;
1646 ir->flags.tx_mask_normal = tx_mask_normal;
1647 ir->flags.no_tx = mceusb_model[model].no_tx;
1648 ir->flags.rx2 = mceusb_model[model].rx2;
1651 /* Saving usb interface data for use by the transmitter routine */
1652 ir->usb_ep_out = ep_out;
1653 if (usb_endpoint_xfer_int(ep_out))
1654 ir->pipe_out = usb_sndintpipe(ir->usbdev,
1655 ep_out->bEndpointAddress);
1657 ir->pipe_out = usb_sndbulkpipe(ir->usbdev,
1658 ep_out->bEndpointAddress);
1660 if (dev->descriptor.iManufacturer
1661 && usb_string(dev, dev->descriptor.iManufacturer,
1662 buf, sizeof(buf)) > 0)
1663 strscpy(name, buf, sizeof(name));
1664 if (dev->descriptor.iProduct
1665 && usb_string(dev, dev->descriptor.iProduct,
1666 buf, sizeof(buf)) > 0)
1667 snprintf(name + strlen(name), sizeof(name) - strlen(name),
1671 * Initialize async USB error handler before registering
1672 * or activating any mceusb RX and TX functions
1674 INIT_WORK(&ir->kevent, mceusb_deferred_kevent);
1676 ir->rc = mceusb_init_rc_dev(ir);
1680 /* wire up inbound data handler */
1681 if (usb_endpoint_xfer_int(ep_in))
1682 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,
1683 mceusb_dev_recv, ir, ep_in->bInterval);
1685 usb_fill_bulk_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,
1686 mceusb_dev_recv, ir);
1688 ir->urb_in->transfer_dma = ir->dma_in;
1689 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1691 /* flush buffers on the device */
1692 dev_dbg(&intf->dev, "Flushing receive buffers");
1693 res = usb_submit_urb(ir->urb_in, GFP_KERNEL);
1695 dev_err(&intf->dev, "failed to flush buffers: %d", res);
1697 /* figure out which firmware/emulator version this hardware has */
1698 mceusb_get_emulator_version(ir);
1700 /* initialize device */
1701 if (ir->flags.microsoft_gen1)
1702 mceusb_gen1_init(ir);
1704 mceusb_gen2_init(ir);
1706 mceusb_get_parameters(ir);
1708 mceusb_flash_led(ir);
1710 if (!ir->flags.no_tx)
1711 mceusb_set_tx_mask(ir->rc, MCE_DEFAULT_TX_MASK);
1713 usb_set_intfdata(intf, ir);
1715 /* enable wake via this device */
1716 device_set_wakeup_capable(ir->dev, true);
1717 device_set_wakeup_enable(ir->dev, true);
1719 dev_info(&intf->dev, "Registered %s with mce emulator interface version %x",
1721 dev_info(&intf->dev, "%x tx ports (0x%x cabled) and %x rx sensors (0x%x active)",
1722 ir->num_txports, ir->txports_cabled,
1723 ir->num_rxports, ir->rxports_active);
1727 /* Error-handling path */
1729 cancel_work_sync(&ir->kevent);
1730 usb_put_dev(ir->usbdev);
1731 usb_kill_urb(ir->urb_in);
1732 usb_free_urb(ir->urb_in);
1734 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in);
1738 dev_err(&intf->dev, "%s: device setup failed!", __func__);
1744 static void mceusb_dev_disconnect(struct usb_interface *intf)
1746 struct usb_device *dev = interface_to_usbdev(intf);
1747 struct mceusb_dev *ir = usb_get_intfdata(intf);
1749 usb_set_intfdata(intf, NULL);
1755 cancel_work_sync(&ir->kevent);
1756 rc_unregister_device(ir->rc);
1757 usb_kill_urb(ir->urb_in);
1758 usb_free_urb(ir->urb_in);
1759 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);
1765 static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message)
1767 struct mceusb_dev *ir = usb_get_intfdata(intf);
1768 dev_info(ir->dev, "suspend");
1769 usb_kill_urb(ir->urb_in);
1773 static int mceusb_dev_resume(struct usb_interface *intf)
1775 struct mceusb_dev *ir = usb_get_intfdata(intf);
1776 dev_info(ir->dev, "resume");
1777 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))
1782 static struct usb_driver mceusb_dev_driver = {
1783 .name = DRIVER_NAME,
1784 .probe = mceusb_dev_probe,
1785 .disconnect = mceusb_dev_disconnect,
1786 .suspend = mceusb_dev_suspend,
1787 .resume = mceusb_dev_resume,
1788 .reset_resume = mceusb_dev_resume,
1789 .id_table = mceusb_dev_table
1792 module_usb_driver(mceusb_dev_driver);
1794 MODULE_DESCRIPTION(DRIVER_DESC);
1795 MODULE_AUTHOR(DRIVER_AUTHOR);
1796 MODULE_LICENSE("GPL");
1797 MODULE_DEVICE_TABLE(usb, mceusb_dev_table);