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drm/rockchip: Don't change hdmi reference clock rate
[drm/drm-misc.git] / drivers / media / rc / mceusb.c
blobcd7af4d88b7f770162833d2db99c3f0253176ea3
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers
4 *
5 * Copyright (c) 2010-2011, Jarod Wilson <jarod@redhat.com>
6 *
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.
18 *
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
23 */
24
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>
33
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 " \
37 "device driver"
38 #define DRIVER_NAME "mceusb"
39
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 */
43
44 /* MCE constants */
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 */
56
57 /*
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
62 * bits.
63 *
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.
68 */
69 #define MCE_CMD 0x1f
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 */
74
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 */
78
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 */
87
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) */
100
101 /* Misc commands */
102 #define MCE_CMD_NOP 0xff /* No operation */
103
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 */
118
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 */
122
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... */
136
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 */
141
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
169
170 enum mceusb_model_type {
171 MCE_GEN2 = 0, /* Most boards */
172 MCE_GEN1,
173 MCE_GEN3,
174 MCE_GEN3_BROKEN_IRTIMEOUT,
175 MCE_GEN2_TX_INV,
176 MCE_GEN2_TX_INV_RX_GOOD,
177 POLARIS_EVK,
178 CX_HYBRID_TV,
179 MULTIFUNCTION,
180 TIVO_KIT,
181 MCE_GEN2_NO_TX,
182 HAUPPAUGE_CX_HYBRID_TV,
183 EVROMEDIA_FULL_HYBRID_FULLHD,
184 ASTROMETA_T2HYBRID,
185 };
186
187 struct mceusb_model {
188 u32 mce_gen1:1;
189 u32 mce_gen2:1;
190 u32 mce_gen3:1;
191 u32 tx_mask_normal:1;
192 u32 no_tx:1;
193 u32 broken_irtimeout:1;
194 /*
195 * 2nd IR receiver (short-range, wideband) for learning mode:
196 * 0, absent 2nd receiver (rx2)
197 * 1, rx2 present
198 * 2, rx2 which under counts IR carrier cycles
199 */
200 u32 rx2;
201
202 int ir_intfnum;
203
204 const char *rc_map; /* Allow specify a per-board map */
205 const char *name; /* per-board name */
206 };
207
208 static const struct mceusb_model mceusb_model[] = {
209 [MCE_GEN1] = {
210 .mce_gen1 = 1,
211 .tx_mask_normal = 1,
212 .rx2 = 2,
213 },
214 [MCE_GEN2] = {
215 .mce_gen2 = 1,
216 .rx2 = 2,
217 },
218 [MCE_GEN2_NO_TX] = {
219 .mce_gen2 = 1,
220 .no_tx = 1,
221 },
222 [MCE_GEN2_TX_INV] = {
223 .mce_gen2 = 1,
224 .tx_mask_normal = 1,
225 .rx2 = 1,
226 },
227 [MCE_GEN2_TX_INV_RX_GOOD] = {
228 .mce_gen2 = 1,
229 .tx_mask_normal = 1,
230 .rx2 = 2,
231 },
232 [MCE_GEN3] = {
233 .mce_gen3 = 1,
234 .tx_mask_normal = 1,
235 .rx2 = 2,
236 },
237 [MCE_GEN3_BROKEN_IRTIMEOUT] = {
238 .mce_gen3 = 1,
239 .tx_mask_normal = 1,
240 .rx2 = 2,
241 .broken_irtimeout = 1
242 },
243 [POLARIS_EVK] = {
244 /*
245 * In fact, the EVK is shipped without
246 * remotes, but we should have something handy,
247 * to allow testing it
248 */
249 .name = "Conexant Hybrid TV (cx231xx) MCE IR",
250 .rx2 = 2,
251 },
252 [CX_HYBRID_TV] = {
253 .no_tx = 1, /* tx isn't wired up at all */
254 .name = "Conexant Hybrid TV (cx231xx) MCE IR",
255 },
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",
259 },
260 [MULTIFUNCTION] = {
261 .mce_gen2 = 1,
262 .ir_intfnum = 2,
263 .rx2 = 2,
264 },
265 [TIVO_KIT] = {
266 .mce_gen2 = 1,
267 .rc_map = RC_MAP_TIVO,
268 .rx2 = 2,
269 },
270 [EVROMEDIA_FULL_HYBRID_FULLHD] = {
271 .name = "Evromedia USB Full Hybrid Full HD",
272 .no_tx = 1,
273 .rc_map = RC_MAP_MSI_DIGIVOX_III,
274 },
275 [ASTROMETA_T2HYBRID] = {
276 .name = "Astrometa T2Hybrid",
277 .no_tx = 1,
278 .rc_map = RC_MAP_ASTROMETA_T2HYBRID,
279 }
280 };
281
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) },
334 /* Mitsumi */
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) },
395 /* Compro K100 */
396 { USB_DEVICE(VENDOR_COMPRO, 0x3020) },
397 /* Compro K100 v2 */
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 },
446
447 /* Terminating entry */
448 { }
449 };
450
451 /* data structure for each usb transceiver */
452 struct mceusb_dev {
453 /* ir-core bits */
454 struct rc_dev *rc;
455
456 /* optional features we can enable */
457 bool carrier_report_enabled;
458 bool wideband_rx_enabled; /* aka learning mode, short-range rx */
459
460 /* core device bits */
461 struct device *dev;
462
463 /* usb */
464 struct usb_device *usbdev;
465 struct usb_interface *usbintf;
466 struct urb *urb_in;
467 unsigned int pipe_in;
468 struct usb_endpoint_descriptor *usb_ep_out;
469 unsigned int pipe_out;
470
471 /* buffers and dma */
472 unsigned char *buf_in;
473 unsigned int len_in;
474 dma_addr_t dma_in;
475
476 enum {
477 CMD_HEADER = 0,
478 SUBCMD,
479 CMD_DATA,
480 PARSE_IRDATA,
481 } parser_state;
482
483 u8 cmd, rem; /* Remaining IR data bytes in packet */
484
485 struct {
486 u32 connected:1;
487 u32 tx_mask_normal:1;
488 u32 microsoft_gen1:1;
489 u32 no_tx:1;
490 u32 rx2;
491 } flags;
492
493 /* transmit support */
494 u32 carrier;
495 unsigned char tx_mask;
496
497 char phys[64];
498 enum mceusb_model_type model;
499
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 */
507
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 */
511
512 /*
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
516 */
517 struct work_struct kevent;
518 unsigned long kevent_flags;
519 # define EVENT_TX_HALT 0
520 # define EVENT_RX_HALT 1
521 # define EVENT_RST_PEND 31
522 };
523
524 /* MCE Device Command Strings, generally a port and command pair */
525 static char DEVICE_RESUME[] = {MCE_CMD_NULL, MCE_CMD_PORT_SYS,
526 MCE_CMD_RESUME};
527 static char GET_REVISION[] = {MCE_CMD_PORT_SYS, MCE_CMD_G_REVISION};
528 static char GET_EMVER[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETEMVER};
529 static char GET_WAKEVERSION[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETWAKEVERSION};
530 static char FLASH_LED[] = {MCE_CMD_PORT_SYS, MCE_CMD_FLASHLED};
531 static char GET_UNKNOWN2[] = {MCE_CMD_PORT_IR, MCE_CMD_UNKNOWN2};
532 static char GET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRCFS};
533 static char GET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTIMEOUT};
534 static char GET_NUM_PORTS[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRNUMPORTS};
535 static char GET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTXPORTS};
536 static char GET_RX_SENSOR[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRRXPORTEN};
537 /* sub in desired values in lower byte or bytes for full command */
538 /* FIXME: make use of these for transmit.
539 static char SET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR,
540 MCE_CMD_SETIRCFS, 0x00, 0x00};
541 static char SET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_SETIRTXPORTS, 0x00};
542 static char SET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR,
543 MCE_CMD_SETIRTIMEOUT, 0x00, 0x00};
544 static char SET_RX_SENSOR[] = {MCE_CMD_PORT_IR,
545 MCE_RSP_EQIRRXPORTEN, 0x00};
546 */
547
548 static int mceusb_cmd_datasize(u8 cmd, u8 subcmd)
549 {
550 int datasize = 0;
551
552 switch (cmd) {
553 case MCE_CMD_NULL:
554 if (subcmd == MCE_CMD_PORT_SYS)
555 datasize = 1;
556 break;
557 case MCE_CMD_PORT_SYS:
558 switch (subcmd) {
559 case MCE_RSP_GETPORTSTATUS:
560 datasize = 5;
561 break;
562 case MCE_RSP_EQWAKEVERSION:
563 datasize = 4;
564 break;
565 case MCE_CMD_G_REVISION:
566 datasize = 4;
567 break;
568 case MCE_RSP_EQWAKESUPPORT:
569 case MCE_RSP_GETWAKESOURCE:
570 case MCE_RSP_EQDEVDETAILS:
571 case MCE_RSP_EQEMVER:
572 datasize = 1;
573 break;
574 }
575 break;
576 case MCE_CMD_PORT_IR:
577 switch (subcmd) {
578 case MCE_CMD_UNKNOWN:
579 case MCE_RSP_EQIRCFS:
580 case MCE_RSP_EQIRTIMEOUT:
581 case MCE_RSP_EQIRRXCFCNT:
582 case MCE_RSP_EQIRNUMPORTS:
583 datasize = 2;
584 break;
585 case MCE_CMD_SIG_END:
586 case MCE_RSP_EQIRTXPORTS:
587 case MCE_RSP_EQIRRXPORTEN:
588 datasize = 1;
589 break;
590 }
591 }
592 return datasize;
593 }
594
595 static void mceusb_dev_printdata(struct mceusb_dev *ir, u8 *buf, int buf_len,
596 int offset, int len, bool out)
597 {
598 #if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
599 char *inout;
600 u8 cmd, subcmd, *data;
601 struct device *dev = ir->dev;
602 u32 carrier, period;
603
604 if (offset < 0 || offset >= buf_len)
605 return;
606
607 dev_dbg(dev, "%cx data[%d]: %*ph (len=%d sz=%d)",
608 (out ? 't' : 'r'), offset,
609 min(len, buf_len - offset), buf + offset, len, buf_len);
610
611 inout = out ? "Request" : "Got";
612
613 cmd = buf[offset];
614 subcmd = (offset + 1 < buf_len) ? buf[offset + 1] : 0;
615 data = &buf[offset] + 2;
616
617 /* Trace meaningless 0xb1 0x60 header bytes on original receiver */
618 if (ir->flags.microsoft_gen1 && !out && !offset) {
619 dev_dbg(dev, "MCE gen 1 header");
620 return;
621 }
622
623 /* Trace IR data header or trailer */
624 if (cmd != MCE_CMD_PORT_IR &&
625 (cmd & MCE_PORT_MASK) == MCE_COMMAND_IRDATA) {
626 if (cmd == MCE_IRDATA_TRAILER)
627 dev_dbg(dev, "End of raw IR data");
628 else
629 dev_dbg(dev, "Raw IR data, %d pulse/space samples",
630 cmd & MCE_PACKET_LENGTH_MASK);
631 return;
632 }
633
634 /* Unexpected end of buffer? */
635 if (offset + len > buf_len)
636 return;
637
638 /* Decode MCE command/response */
639 switch (cmd) {
640 case MCE_CMD_NULL:
641 if (subcmd == MCE_CMD_NULL)
642 break;
643 if ((subcmd == MCE_CMD_PORT_SYS) &&
644 (data[0] == MCE_CMD_RESUME))
645 dev_dbg(dev, "Device resume requested");
646 else
647 dev_dbg(dev, "Unknown command 0x%02x 0x%02x",
648 cmd, subcmd);
649 break;
650 case MCE_CMD_PORT_SYS:
651 switch (subcmd) {
652 case MCE_RSP_EQEMVER:
653 if (!out)
654 dev_dbg(dev, "Emulator interface version %x",
655 data[0]);
656 break;
657 case MCE_CMD_G_REVISION:
658 if (len == 2)
659 dev_dbg(dev, "Get hw/sw rev?");
660 else
661 dev_dbg(dev, "hw/sw rev %*ph",
662 4, &buf[offset + 2]);
663 break;
664 case MCE_CMD_RESUME:
665 dev_dbg(dev, "Device resume requested");
666 break;
667 case MCE_RSP_CMD_ILLEGAL:
668 dev_dbg(dev, "Illegal PORT_SYS command");
669 break;
670 case MCE_RSP_EQWAKEVERSION:
671 if (!out)
672 dev_dbg(dev, "Wake version, proto: 0x%02x, payload: 0x%02x, address: 0x%02x, version: 0x%02x",
673 data[0], data[1], data[2], data[3]);
674 break;
675 case MCE_RSP_GETPORTSTATUS:
676 if (!out)
677 /* We use data1 + 1 here, to match hw labels */
678 dev_dbg(dev, "TX port %d: blaster is%s connected",
679 data[0] + 1, data[3] ? " not" : "");
680 break;
681 case MCE_CMD_FLASHLED:
682 dev_dbg(dev, "Attempting to flash LED");
683 break;
684 default:
685 dev_dbg(dev, "Unknown command 0x%02x 0x%02x",
686 cmd, subcmd);
687 break;
688 }
689 break;
690 case MCE_CMD_PORT_IR:
691 switch (subcmd) {
692 case MCE_CMD_SIG_END:
693 dev_dbg(dev, "End of signal");
694 break;
695 case MCE_CMD_PING:
696 dev_dbg(dev, "Ping");
697 break;
698 case MCE_CMD_UNKNOWN:
699 dev_dbg(dev, "Resp to 9f 05 of 0x%02x 0x%02x",
700 data[0], data[1]);
701 break;
702 case MCE_RSP_EQIRCFS:
703 if (!data[0] && !data[1]) {
704 dev_dbg(dev, "%s: no carrier", inout);
705 break;
706 }
707 // prescaler should make sense
708 if (data[0] > 8)
709 break;
710 period = DIV_ROUND_CLOSEST((1U << data[0] * 2) *
711 (data[1] + 1), 10);
712 if (!period)
713 break;
714 carrier = USEC_PER_SEC / period;
715 dev_dbg(dev, "%s carrier of %u Hz (period %uus)",
716 inout, carrier, period);
717 break;
718 case MCE_CMD_GETIRCFS:
719 dev_dbg(dev, "Get carrier mode and freq");
720 break;
721 case MCE_RSP_EQIRTXPORTS:
722 dev_dbg(dev, "%s transmit blaster mask of 0x%02x",
723 inout, data[0]);
724 break;
725 case MCE_RSP_EQIRTIMEOUT:
726 /* value is in units of 50us, so x*50/1000 ms */
727 period = ((data[0] << 8) | data[1]) *
728 MCE_TIME_UNIT / 1000;
729 dev_dbg(dev, "%s receive timeout of %d ms",
730 inout, period);
731 break;
732 case MCE_CMD_GETIRTIMEOUT:
733 dev_dbg(dev, "Get receive timeout");
734 break;
735 case MCE_CMD_GETIRTXPORTS:
736 dev_dbg(dev, "Get transmit blaster mask");
737 break;
738 case MCE_RSP_EQIRRXPORTEN:
739 dev_dbg(dev, "%s %s-range receive sensor in use",
740 inout, data[0] == 0x02 ? "short" : "long");
741 break;
742 case MCE_CMD_GETIRRXPORTEN:
743 /* aka MCE_RSP_EQIRRXCFCNT */
744 if (out)
745 dev_dbg(dev, "Get receive sensor");
746 else
747 dev_dbg(dev, "RX carrier cycle count: %d",
748 ((data[0] << 8) | data[1]));
749 break;
750 case MCE_RSP_EQIRNUMPORTS:
751 if (out)
752 break;
753 dev_dbg(dev, "Num TX ports: %x, num RX ports: %x",
754 data[0], data[1]);
755 break;
756 case MCE_RSP_CMD_ILLEGAL:
757 dev_dbg(dev, "Illegal PORT_IR command");
758 break;
759 case MCE_RSP_TX_TIMEOUT:
760 dev_dbg(dev, "IR TX timeout (TX buffer underrun)");
761 break;
762 default:
763 dev_dbg(dev, "Unknown command 0x%02x 0x%02x",
764 cmd, subcmd);
765 break;
766 }
767 break;
768 default:
769 break;
770 }
771 #endif
772 }
773
774 /*
775 * Schedule work that can't be done in interrupt handlers
776 * (mceusb_dev_recv() and mce_write_callback()) nor BH work.
777 * Invokes mceusb_deferred_kevent() for recovering from
778 * error events specified by the kevent bit field.
779 */
780 static void mceusb_defer_kevent(struct mceusb_dev *ir, int kevent)
781 {
782 set_bit(kevent, &ir->kevent_flags);
783
784 if (test_bit(EVENT_RST_PEND, &ir->kevent_flags)) {
785 dev_dbg(ir->dev, "kevent %d dropped pending USB Reset Device",
786 kevent);
787 return;
788 }
789
790 if (!schedule_work(&ir->kevent))
791 dev_dbg(ir->dev, "kevent %d already scheduled", kevent);
792 else
793 dev_dbg(ir->dev, "kevent %d scheduled", kevent);
794 }
795
796 static void mce_write_callback(struct urb *urb)
797 {
798 if (!urb)
799 return;
800
801 complete(urb->context);
802 }
803
804 /*
805 * Write (TX/send) data to MCE device USB endpoint out.
806 * Used for IR blaster TX and MCE device commands.
807 *
808 * Return: The number of bytes written (> 0) or errno (< 0).
809 */
810 static int mce_write(struct mceusb_dev *ir, u8 *data, int size)
811 {
812 int ret;
813 struct urb *urb;
814 struct device *dev = ir->dev;
815 unsigned char *buf_out;
816 struct completion tx_done;
817 unsigned long expire;
818 unsigned long ret_wait;
819
820 mceusb_dev_printdata(ir, data, size, 0, size, true);
821
822 urb = usb_alloc_urb(0, GFP_KERNEL);
823 if (unlikely(!urb)) {
824 dev_err(dev, "Error: mce write couldn't allocate urb");
825 return -ENOMEM;
826 }
827
828 buf_out = kmalloc(size, GFP_KERNEL);
829 if (!buf_out) {
830 usb_free_urb(urb);
831 return -ENOMEM;
832 }
833
834 init_completion(&tx_done);
835
836 /* outbound data */
837 if (usb_endpoint_xfer_int(ir->usb_ep_out))
838 usb_fill_int_urb(urb, ir->usbdev, ir->pipe_out,
839 buf_out, size, mce_write_callback, &tx_done,
840 ir->usb_ep_out->bInterval);
841 else
842 usb_fill_bulk_urb(urb, ir->usbdev, ir->pipe_out,
843 buf_out, size, mce_write_callback, &tx_done);
844 memcpy(buf_out, data, size);
845
846 ret = usb_submit_urb(urb, GFP_KERNEL);
847 if (ret) {
848 dev_err(dev, "Error: mce write submit urb error = %d", ret);
849 kfree(buf_out);
850 usb_free_urb(urb);
851 return ret;
852 }
853
854 expire = msecs_to_jiffies(USB_TX_TIMEOUT);
855 ret_wait = wait_for_completion_timeout(&tx_done, expire);
856 if (!ret_wait) {
857 dev_err(dev, "Error: mce write timed out (expire = %lu (%dms))",
858 expire, USB_TX_TIMEOUT);
859 usb_kill_urb(urb);
860 ret = (urb->status == -ENOENT ? -ETIMEDOUT : urb->status);
861 } else {
862 ret = urb->status;
863 }
864 if (ret >= 0)
865 ret = urb->actual_length; /* bytes written */
866
867 switch (urb->status) {
868 /* success */
869 case 0:
870 break;
871
872 case -ECONNRESET:
873 case -ENOENT:
874 case -EILSEQ:
875 case -ESHUTDOWN:
876 break;
877
878 case -EPIPE:
879 dev_err(ir->dev, "Error: mce write urb status = %d (TX HALT)",
880 urb->status);
881 mceusb_defer_kevent(ir, EVENT_TX_HALT);
882 break;
883
884 default:
885 dev_err(ir->dev, "Error: mce write urb status = %d",
886 urb->status);
887 break;
888 }
889
890 dev_dbg(dev, "tx done status = %d (wait = %lu, expire = %lu (%dms), urb->actual_length = %d, urb->status = %d)",
891 ret, ret_wait, expire, USB_TX_TIMEOUT,
892 urb->actual_length, urb->status);
893
894 kfree(buf_out);
895 usb_free_urb(urb);
896
897 return ret;
898 }
899
900 static void mce_command_out(struct mceusb_dev *ir, u8 *data, int size)
901 {
902 int rsize = sizeof(DEVICE_RESUME);
903
904 if (ir->need_reset) {
905 ir->need_reset = false;
906 mce_write(ir, DEVICE_RESUME, rsize);
907 msleep(10);
908 }
909
910 mce_write(ir, data, size);
911 msleep(10);
912 }
913
914 /*
915 * Transmit IR out the MCE device IR blaster port(s).
916 *
917 * Convert IR pulse/space sequence from LIRC to MCE format.
918 * Break up a long IR sequence into multiple parts (MCE IR data packets).
919 *
920 * u32 txbuf[] consists of IR pulse, space, ..., and pulse times in usec.
921 * Pulses and spaces are implicit by their position.
922 * The first IR sample, txbuf[0], is always a pulse.
923 *
924 * u8 irbuf[] consists of multiple IR data packets for the MCE device.
925 * A packet is 1 u8 MCE_IRDATA_HEADER and up to 30 u8 IR samples.
926 * An IR sample is 1-bit pulse/space flag with 7-bit time
927 * in MCE time units (50usec).
928 *
929 * Return: The number of IR samples sent (> 0) or errno (< 0).
930 */
931 static int mceusb_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count)
932 {
933 struct mceusb_dev *ir = dev->priv;
934 u8 cmdbuf[3] = { MCE_CMD_PORT_IR, MCE_CMD_SETIRTXPORTS, 0x00 };
935 u8 irbuf[MCE_IRBUF_SIZE];
936 int ircount = 0;
937 unsigned int irsample;
938 int i, length, ret;
939
940 /* Send the set TX ports command */
941 cmdbuf[2] = ir->tx_mask;
942 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
943
944 /* Generate mce IR data packet */
945 for (i = 0; i < count; i++) {
946 irsample = txbuf[i] / MCE_TIME_UNIT;
947
948 /* loop to support long pulses/spaces > 6350us (127*50us) */
949 while (irsample > 0) {
950 /* Insert IR header every 30th entry */
951 if (ircount % MCE_PACKET_SIZE == 0) {
952 /* Room for IR header and one IR sample? */
953 if (ircount >= MCE_IRBUF_SIZE - 1) {
954 /* Send near full buffer */
955 ret = mce_write(ir, irbuf, ircount);
956 if (ret < 0)
957 return ret;
958 ircount = 0;
959 }
960 irbuf[ircount++] = MCE_IRDATA_HEADER;
961 }
962
963 /* Insert IR sample */
964 if (irsample <= MCE_MAX_PULSE_LENGTH) {
965 irbuf[ircount] = irsample;
966 irsample = 0;
967 } else {
968 irbuf[ircount] = MCE_MAX_PULSE_LENGTH;
969 irsample -= MCE_MAX_PULSE_LENGTH;
970 }
971 /*
972 * Even i = IR pulse
973 * Odd i = IR space
974 */
975 irbuf[ircount] |= (i & 1 ? 0 : MCE_PULSE_BIT);
976 ircount++;
977
978 /* IR buffer full? */
979 if (ircount >= MCE_IRBUF_SIZE) {
980 /* Fix packet length in last header */
981 length = ircount % MCE_PACKET_SIZE;
982 if (length > 0)
983 irbuf[ircount - length] -=
984 MCE_PACKET_SIZE - length;
985 /* Send full buffer */
986 ret = mce_write(ir, irbuf, ircount);
987 if (ret < 0)
988 return ret;
989 ircount = 0;
990 }
991 }
992 } /* after for loop, 0 <= ircount < MCE_IRBUF_SIZE */
993
994 /* Fix packet length in last header */
995 length = ircount % MCE_PACKET_SIZE;
996 if (length > 0)
997 irbuf[ircount - length] -= MCE_PACKET_SIZE - length;
998
999 /* Append IR trailer (0x80) to final partial (or empty) IR buffer */
1000 irbuf[ircount++] = MCE_IRDATA_TRAILER;
1001
1002 /* Send final buffer */
1003 ret = mce_write(ir, irbuf, ircount);
1004 if (ret < 0)
1005 return ret;
1006
1007 return count;
1008 }
1009
1010 /* Sets active IR outputs -- mce devices typically have two */
1011 static int mceusb_set_tx_mask(struct rc_dev *dev, u32 mask)
1012 {
1013 struct mceusb_dev *ir = dev->priv;
1014
1015 /* return number of transmitters */
1016 int emitters = ir->num_txports ? ir->num_txports : 2;
1017
1018 if (mask >= (1 << emitters))
1019 return emitters;
1020
1021 if (ir->flags.tx_mask_normal)
1022 ir->tx_mask = mask;
1023 else
1024 ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ?
1025 mask ^ MCE_DEFAULT_TX_MASK : mask) << 1;
1026
1027 return 0;
1028 }
1029
1030 /* Sets the send carrier frequency and mode */
1031 static int mceusb_set_tx_carrier(struct rc_dev *dev, u32 carrier)
1032 {
1033 struct mceusb_dev *ir = dev->priv;
1034 int clk = 10000000;
1035 int prescaler = 0, divisor = 0;
1036 unsigned char cmdbuf[4] = { MCE_CMD_PORT_IR,
1037 MCE_CMD_SETIRCFS, 0x00, 0x00 };
1038
1039 /* Carrier has changed */
1040 if (ir->carrier != carrier) {
1041
1042 if (carrier == 0) {
1043 ir->carrier = carrier;
1044 cmdbuf[2] = MCE_CMD_SIG_END;
1045 cmdbuf[3] = MCE_IRDATA_TRAILER;
1046 dev_dbg(ir->dev, "disabling carrier modulation");
1047 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1048 return 0;
1049 }
1050
1051 for (prescaler = 0; prescaler < 4; ++prescaler) {
1052 divisor = (clk >> (2 * prescaler)) / carrier;
1053 if (divisor <= 0xff) {
1054 ir->carrier = carrier;
1055 cmdbuf[2] = prescaler;
1056 cmdbuf[3] = divisor;
1057 dev_dbg(ir->dev, "requesting %u HZ carrier",
1058 carrier);
1059
1060 /* Transmit new carrier to mce device */
1061 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1062 return 0;
1063 }
1064 }
1065
1066 return -EINVAL;
1067
1068 }
1069
1070 return 0;
1071 }
1072
1073 static int mceusb_set_timeout(struct rc_dev *dev, unsigned int timeout)
1074 {
1075 u8 cmdbuf[4] = { MCE_CMD_PORT_IR, MCE_CMD_SETIRTIMEOUT, 0, 0 };
1076 struct mceusb_dev *ir = dev->priv;
1077 unsigned int units;
1078
1079 units = DIV_ROUND_UP(timeout, MCE_TIME_UNIT);
1080
1081 cmdbuf[2] = units >> 8;
1082 cmdbuf[3] = units;
1083
1084 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1085
1086 /* get receiver timeout value */
1087 mce_command_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
1088
1089 return 0;
1090 }
1091
1092 /*
1093 * Select or deselect the 2nd receiver port.
1094 * Second receiver is learning mode, wide-band, short-range receiver.
1095 * Only one receiver (long or short range) may be active at a time.
1096 */
1097 static int mceusb_set_rx_wideband(struct rc_dev *dev, int enable)
1098 {
1099 struct mceusb_dev *ir = dev->priv;
1100 unsigned char cmdbuf[3] = { MCE_CMD_PORT_IR,
1101 MCE_CMD_SETIRRXPORTEN, 0x00 };
1102
1103 dev_dbg(ir->dev, "select %s-range receive sensor",
1104 enable ? "short" : "long");
1105 if (enable) {
1106 ir->wideband_rx_enabled = true;
1107 cmdbuf[2] = 2; /* port 2 is short range receiver */
1108 } else {
1109 ir->wideband_rx_enabled = false;
1110 cmdbuf[2] = 1; /* port 1 is long range receiver */
1111 }
1112 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1113 /* response from device sets ir->learning_active */
1114
1115 return 0;
1116 }
1117
1118 /*
1119 * Enable/disable receiver carrier frequency pass through reporting.
1120 * Only the short-range receiver has carrier frequency measuring capability.
1121 * Implicitly select this receiver when enabling carrier frequency reporting.
1122 */
1123 static int mceusb_set_rx_carrier_report(struct rc_dev *dev, int enable)
1124 {
1125 struct mceusb_dev *ir = dev->priv;
1126 unsigned char cmdbuf[3] = { MCE_CMD_PORT_IR,
1127 MCE_CMD_SETIRRXPORTEN, 0x00 };
1128
1129 dev_dbg(ir->dev, "%s short-range receiver carrier reporting",
1130 enable ? "enable" : "disable");
1131 if (enable) {
1132 ir->carrier_report_enabled = true;
1133 if (!ir->learning_active) {
1134 cmdbuf[2] = 2; /* port 2 is short range receiver */
1135 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1136 }
1137 } else {
1138 ir->carrier_report_enabled = false;
1139 /*
1140 * Revert to normal (long-range) receiver only if the
1141 * wideband (short-range) receiver wasn't explicitly
1142 * enabled.
1143 */
1144 if (ir->learning_active && !ir->wideband_rx_enabled) {
1145 cmdbuf[2] = 1; /* port 1 is long range receiver */
1146 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1147 }
1148 }
1149
1150 return 0;
1151 }
1152
1153 /*
1154 * Handle PORT_SYS/IR command response received from the MCE device.
1155 *
1156 * Assumes single response with all its data (not truncated)
1157 * in buf_in[]. The response itself determines its total length
1158 * (mceusb_cmd_datasize() + 2) and hence the minimum size of buf_in[].
1159 *
1160 * We don't do anything but print debug spew for many of the command bits
1161 * we receive from the hardware, but some of them are useful information
1162 * we want to store so that we can use them.
1163 */
1164 static void mceusb_handle_command(struct mceusb_dev *ir, u8 *buf_in)
1165 {
1166 u8 cmd = buf_in[0];
1167 u8 subcmd = buf_in[1];
1168 u8 *hi = &buf_in[2]; /* read only when required */
1169 u8 *lo = &buf_in[3]; /* read only when required */
1170 struct ir_raw_event rawir = {};
1171 u32 carrier_cycles;
1172 u32 cycles_fix;
1173
1174 if (cmd == MCE_CMD_PORT_SYS) {
1175 switch (subcmd) {
1176 /* the one and only 5-byte return value command */
1177 case MCE_RSP_GETPORTSTATUS:
1178 if (buf_in[5] == 0 && *hi < 8)
1179 ir->txports_cabled |= 1 << *hi;
1180 break;
1181
1182 /* 1-byte return value commands */
1183 case MCE_RSP_EQEMVER:
1184 ir->emver = *hi;
1185 break;
1186
1187 /* No return value commands */
1188 case MCE_RSP_CMD_ILLEGAL:
1189 ir->need_reset = true;
1190 break;
1191
1192 default:
1193 break;
1194 }
1195
1196 return;
1197 }
1198
1199 if (cmd != MCE_CMD_PORT_IR)
1200 return;
1201
1202 switch (subcmd) {
1203 /* 2-byte return value commands */
1204 case MCE_RSP_EQIRTIMEOUT:
1205 ir->rc->timeout = (*hi << 8 | *lo) * MCE_TIME_UNIT;
1206 break;
1207 case MCE_RSP_EQIRNUMPORTS:
1208 ir->num_txports = *hi;
1209 ir->num_rxports = *lo;
1210 break;
1211 case MCE_RSP_EQIRRXCFCNT:
1212 /*
1213 * The carrier cycle counter can overflow and wrap around
1214 * without notice from the device. So frequency measurement
1215 * will be inaccurate with long duration IR.
1216 *
1217 * The long-range (non learning) receiver always reports
1218 * zero count so we always ignore its report.
1219 */
1220 if (ir->carrier_report_enabled && ir->learning_active &&
1221 ir->pulse_tunit > 0) {
1222 carrier_cycles = (*hi << 8 | *lo);
1223 /*
1224 * Adjust carrier cycle count by adding
1225 * 1 missed count per pulse "on"
1226 */
1227 cycles_fix = ir->flags.rx2 == 2 ? ir->pulse_count : 0;
1228 rawir.carrier_report = 1;
1229 rawir.carrier = (1000000u / MCE_TIME_UNIT) *
1230 (carrier_cycles + cycles_fix) /
1231 ir->pulse_tunit;
1232 dev_dbg(ir->dev, "RX carrier frequency %u Hz (pulse count = %u, cycles = %u, duration = %u, rx2 = %u)",
1233 rawir.carrier, ir->pulse_count, carrier_cycles,
1234 ir->pulse_tunit, ir->flags.rx2);
1235 ir_raw_event_store(ir->rc, &rawir);
1236 }
1237 break;
1238
1239 /* 1-byte return value commands */
1240 case MCE_RSP_EQIRTXPORTS:
1241 ir->tx_mask = *hi;
1242 break;
1243 case MCE_RSP_EQIRRXPORTEN:
1244 ir->learning_active = ((*hi & 0x02) == 0x02);
1245 if (ir->rxports_active != *hi) {
1246 dev_info(ir->dev, "%s-range (0x%x) receiver active",
1247 ir->learning_active ? "short" : "long", *hi);
1248 ir->rxports_active = *hi;
1249 }
1250 break;
1251
1252 /* No return value commands */
1253 case MCE_RSP_CMD_ILLEGAL:
1254 case MCE_RSP_TX_TIMEOUT:
1255 ir->need_reset = true;
1256 break;
1257
1258 default:
1259 break;
1260 }
1261 }
1262
1263 static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
1264 {
1265 struct ir_raw_event rawir = {};
1266 bool event = false;
1267 int i = 0;
1268
1269 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
1270 if (ir->flags.microsoft_gen1)
1271 i = 2;
1272
1273 /* if there's no data, just return now */
1274 if (buf_len <= i)
1275 return;
1276
1277 for (; i < buf_len; i++) {
1278 switch (ir->parser_state) {
1279 case SUBCMD:
1280 ir->rem = mceusb_cmd_datasize(ir->cmd, ir->buf_in[i]);
1281 mceusb_dev_printdata(ir, ir->buf_in, buf_len, i - 1,
1282 ir->rem + 2, false);
1283 if (i + ir->rem < buf_len)
1284 mceusb_handle_command(ir, &ir->buf_in[i - 1]);
1285 ir->parser_state = CMD_DATA;
1286 break;
1287 case PARSE_IRDATA:
1288 ir->rem--;
1289 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);
1290 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK);
1291 if (unlikely(!rawir.duration)) {
1292 dev_dbg(ir->dev, "nonsensical irdata %02x with duration 0",
1293 ir->buf_in[i]);
1294 break;
1295 }
1296 if (rawir.pulse) {
1297 ir->pulse_tunit += rawir.duration;
1298 ir->pulse_count++;
1299 }
1300 rawir.duration *= MCE_TIME_UNIT;
1301
1302 dev_dbg(ir->dev, "Storing %s %u us (%02x)",
1303 rawir.pulse ? "pulse" : "space",
1304 rawir.duration, ir->buf_in[i]);
1305
1306 if (ir_raw_event_store_with_filter(ir->rc, &rawir))
1307 event = true;
1308 break;
1309 case CMD_DATA:
1310 ir->rem--;
1311 break;
1312 case CMD_HEADER:
1313 ir->cmd = ir->buf_in[i];
1314 if ((ir->cmd == MCE_CMD_PORT_IR) ||
1315 ((ir->cmd & MCE_PORT_MASK) !=
1316 MCE_COMMAND_IRDATA)) {
1317 /*
1318 * got PORT_SYS, PORT_IR, or unknown
1319 * command response prefix
1320 */
1321 ir->parser_state = SUBCMD;
1322 continue;
1323 }
1324 /*
1325 * got IR data prefix (0x80 + num_bytes)
1326 * decode MCE packets of the form {0x83, AA, BB, CC}
1327 * IR data packets can span USB messages
1328 */
1329 ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK);
1330 mceusb_dev_printdata(ir, ir->buf_in, buf_len,
1331 i, ir->rem + 1, false);
1332 if (ir->rem) {
1333 ir->parser_state = PARSE_IRDATA;
1334 } else {
1335 struct ir_raw_event ev = {
1336 .timeout = 1,
1337 .duration = ir->rc->timeout
1338 };
1339
1340 if (ir_raw_event_store_with_filter(ir->rc,
1341 &ev))
1342 event = true;
1343 ir->pulse_tunit = 0;
1344 ir->pulse_count = 0;
1345 }
1346 break;
1347 }
1348
1349 if (ir->parser_state != CMD_HEADER && !ir->rem)
1350 ir->parser_state = CMD_HEADER;
1351 }
1352
1353 /*
1354 * Accept IR data spanning multiple rx buffers.
1355 * Reject MCE command response spanning multiple rx buffers.
1356 */
1357 if (ir->parser_state != PARSE_IRDATA || !ir->rem)
1358 ir->parser_state = CMD_HEADER;
1359
1360 if (event) {
1361 dev_dbg(ir->dev, "processed IR data");
1362 ir_raw_event_handle(ir->rc);
1363 }
1364 }
1365
1366 static void mceusb_dev_recv(struct urb *urb)
1367 {
1368 struct mceusb_dev *ir;
1369
1370 if (!urb)
1371 return;
1372
1373 ir = urb->context;
1374 if (!ir) {
1375 usb_unlink_urb(urb);
1376 return;
1377 }
1378
1379 switch (urb->status) {
1380 /* success */
1381 case 0:
1382 mceusb_process_ir_data(ir, urb->actual_length);
1383 break;
1384
1385 case -ECONNRESET:
1386 case -ENOENT:
1387 case -EILSEQ:
1388 case -EPROTO:
1389 case -ESHUTDOWN:
1390 usb_unlink_urb(urb);
1391 return;
1392
1393 case -EPIPE:
1394 dev_err(ir->dev, "Error: urb status = %d (RX HALT)",
1395 urb->status);
1396 mceusb_defer_kevent(ir, EVENT_RX_HALT);
1397 return;
1398
1399 default:
1400 dev_err(ir->dev, "Error: urb status = %d", urb->status);
1401 break;
1402 }
1403
1404 usb_submit_urb(urb, GFP_ATOMIC);
1405 }
1406
1407 static void mceusb_get_emulator_version(struct mceusb_dev *ir)
1408 {
1409 /* If we get no reply or an illegal command reply, its ver 1, says MS */
1410 ir->emver = 1;
1411 mce_command_out(ir, GET_EMVER, sizeof(GET_EMVER));
1412 }
1413
1414 static void mceusb_gen1_init(struct mceusb_dev *ir)
1415 {
1416 int ret;
1417 struct device *dev = ir->dev;
1418 char data[USB_CTRL_MSG_SZ];
1419
1420 /*
1421 * This is a strange one. Windows issues a set address to the device
1422 * on the receive control pipe and expect a certain value pair back
1423 */
1424 ret = usb_control_msg_recv(ir->usbdev, 0, USB_REQ_SET_ADDRESS,
1425 USB_DIR_IN | USB_TYPE_VENDOR,
1426 0, 0, data, USB_CTRL_MSG_SZ, 3000,
1427 GFP_KERNEL);
1428 dev_dbg(dev, "set address - ret = %d", ret);
1429 dev_dbg(dev, "set address - data[0] = %d, data[1] = %d",
1430 data[0], data[1]);
1431
1432 /* set feature: bit rate 38400 bps */
1433 ret = usb_control_msg_send(ir->usbdev, 0,
1434 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
1435 0xc04e, 0x0000, NULL, 0, 3000, GFP_KERNEL);
1436
1437 dev_dbg(dev, "set feature - ret = %d", ret);
1438
1439 /* bRequest 4: set char length to 8 bits */
1440 ret = usb_control_msg_send(ir->usbdev, 0,
1441 4, USB_TYPE_VENDOR,
1442 0x0808, 0x0000, NULL, 0, 3000, GFP_KERNEL);
1443 dev_dbg(dev, "set char length - retB = %d", ret);
1444
1445 /* bRequest 2: set handshaking to use DTR/DSR */
1446 ret = usb_control_msg_send(ir->usbdev, 0,
1447 2, USB_TYPE_VENDOR,
1448 0x0000, 0x0100, NULL, 0, 3000, GFP_KERNEL);
1449 dev_dbg(dev, "set handshake - retC = %d", ret);
1450
1451 /* device resume */
1452 mce_command_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME));
1453
1454 /* get hw/sw revision? */
1455 mce_command_out(ir, GET_REVISION, sizeof(GET_REVISION));
1456 }
1457
1458 static void mceusb_gen2_init(struct mceusb_dev *ir)
1459 {
1460 /* device resume */
1461 mce_command_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME));
1462
1463 /* get wake version (protocol, key, address) */
1464 mce_command_out(ir, GET_WAKEVERSION, sizeof(GET_WAKEVERSION));
1465
1466 /* unknown what this one actually returns... */
1467 mce_command_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2));
1468 }
1469
1470 static void mceusb_get_parameters(struct mceusb_dev *ir)
1471 {
1472 int i;
1473 unsigned char cmdbuf[3] = { MCE_CMD_PORT_SYS,
1474 MCE_CMD_GETPORTSTATUS, 0x00 };
1475
1476 /* defaults, if the hardware doesn't support querying */
1477 ir->num_txports = 2;
1478 ir->num_rxports = 2;
1479
1480 /* get number of tx and rx ports */
1481 mce_command_out(ir, GET_NUM_PORTS, sizeof(GET_NUM_PORTS));
1482
1483 /* get the carrier and frequency */
1484 mce_command_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));
1485
1486 if (ir->num_txports && !ir->flags.no_tx)
1487 /* get the transmitter bitmask */
1488 mce_command_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
1489
1490 /* get receiver timeout value */
1491 mce_command_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
1492
1493 /* get receiver sensor setting */
1494 mce_command_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));
1495
1496 for (i = 0; i < ir->num_txports; i++) {
1497 cmdbuf[2] = i;
1498 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
1499 }
1500 }
1501
1502 static void mceusb_flash_led(struct mceusb_dev *ir)
1503 {
1504 if (ir->emver < 2)
1505 return;
1506
1507 mce_command_out(ir, FLASH_LED, sizeof(FLASH_LED));
1508 }
1509
1510 /*
1511 * Workqueue function
1512 * for resetting or recovering device after occurrence of error events
1513 * specified in ir->kevent bit field.
1514 * Function runs (via schedule_work()) in non-interrupt context, for
1515 * calls here (such as usb_clear_halt()) requiring non-interrupt context.
1516 */
1517 static void mceusb_deferred_kevent(struct work_struct *work)
1518 {
1519 struct mceusb_dev *ir =
1520 container_of(work, struct mceusb_dev, kevent);
1521 int status;
1522
1523 dev_err(ir->dev, "kevent handler called (flags 0x%lx)",
1524 ir->kevent_flags);
1525
1526 if (test_bit(EVENT_RST_PEND, &ir->kevent_flags)) {
1527 dev_err(ir->dev, "kevent handler canceled pending USB Reset Device");
1528 return;
1529 }
1530
1531 if (test_bit(EVENT_RX_HALT, &ir->kevent_flags)) {
1532 usb_unlink_urb(ir->urb_in);
1533 status = usb_clear_halt(ir->usbdev, ir->pipe_in);
1534 dev_err(ir->dev, "rx clear halt status = %d", status);
1535 if (status < 0) {
1536 /*
1537 * Unable to clear RX halt/stall.
1538 * Will need to call usb_reset_device().
1539 */
1540 dev_err(ir->dev,
1541 "stuck RX HALT state requires USB Reset Device to clear");
1542 usb_queue_reset_device(ir->usbintf);
1543 set_bit(EVENT_RST_PEND, &ir->kevent_flags);
1544 clear_bit(EVENT_RX_HALT, &ir->kevent_flags);
1545
1546 /* Cancel all other error events and handlers */
1547 clear_bit(EVENT_TX_HALT, &ir->kevent_flags);
1548 return;
1549 }
1550 clear_bit(EVENT_RX_HALT, &ir->kevent_flags);
1551 status = usb_submit_urb(ir->urb_in, GFP_KERNEL);
1552 if (status < 0) {
1553 dev_err(ir->dev, "rx unhalt submit urb error = %d",
1554 status);
1555 }
1556 }
1557
1558 if (test_bit(EVENT_TX_HALT, &ir->kevent_flags)) {
1559 status = usb_clear_halt(ir->usbdev, ir->pipe_out);
1560 dev_err(ir->dev, "tx clear halt status = %d", status);
1561 if (status < 0) {
1562 /*
1563 * Unable to clear TX halt/stall.
1564 * Will need to call usb_reset_device().
1565 */
1566 dev_err(ir->dev,
1567 "stuck TX HALT state requires USB Reset Device to clear");
1568 usb_queue_reset_device(ir->usbintf);
1569 set_bit(EVENT_RST_PEND, &ir->kevent_flags);
1570 clear_bit(EVENT_TX_HALT, &ir->kevent_flags);
1571
1572 /* Cancel all other error events and handlers */
1573 clear_bit(EVENT_RX_HALT, &ir->kevent_flags);
1574 return;
1575 }
1576 clear_bit(EVENT_TX_HALT, &ir->kevent_flags);
1577 }
1578 }
1579
1580 static struct rc_dev *mceusb_init_rc_dev(struct mceusb_dev *ir)
1581 {
1582 struct usb_device *udev = ir->usbdev;
1583 struct device *dev = ir->dev;
1584 struct rc_dev *rc;
1585 int ret;
1586
1587 rc = rc_allocate_device(RC_DRIVER_IR_RAW);
1588 if (!rc) {
1589 dev_err(dev, "remote dev allocation failed");
1590 goto out;
1591 }
1592
1593 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));
1594
1595 rc->device_name = mceusb_model[ir->model].name ? :
1596 "Media Center Ed. eHome Infrared Remote Transceiver";
1597 rc->input_phys = ir->phys;
1598 usb_to_input_id(ir->usbdev, &rc->input_id);
1599 rc->dev.parent = dev;
1600 rc->priv = ir;
1601 rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
1602 rc->rx_resolution = MCE_TIME_UNIT;
1603 rc->min_timeout = MCE_TIME_UNIT;
1604 rc->timeout = MS_TO_US(100);
1605 if (!mceusb_model[ir->model].broken_irtimeout) {
1606 rc->s_timeout = mceusb_set_timeout;
1607 rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT;
1608 } else {
1609 /*
1610 * If we can't set the timeout using CMD_SETIRTIMEOUT, we can
1611 * rely on software timeouts for timeouts < 100ms.
1612 */
1613 rc->max_timeout = rc->timeout;
1614 }
1615 if (!ir->flags.no_tx) {
1616 rc->s_tx_mask = mceusb_set_tx_mask;
1617 rc->s_tx_carrier = mceusb_set_tx_carrier;
1618 rc->tx_ir = mceusb_tx_ir;
1619 }
1620 if (ir->flags.rx2 > 0) {
1621 rc->s_wideband_receiver = mceusb_set_rx_wideband;
1622 rc->s_carrier_report = mceusb_set_rx_carrier_report;
1623 }
1624 rc->driver_name = DRIVER_NAME;
1625
1626 switch (le16_to_cpu(udev->descriptor.idVendor)) {
1627 case VENDOR_HAUPPAUGE:
1628 rc->map_name = RC_MAP_HAUPPAUGE;
1629 break;
1630 case VENDOR_PCTV:
1631 rc->map_name = RC_MAP_PINNACLE_PCTV_HD;
1632 break;
1633 default:
1634 rc->map_name = RC_MAP_RC6_MCE;
1635 }
1636 if (mceusb_model[ir->model].rc_map)
1637 rc->map_name = mceusb_model[ir->model].rc_map;
1638
1639 ret = rc_register_device(rc);
1640 if (ret < 0) {
1641 dev_err(dev, "remote dev registration failed");
1642 goto out;
1643 }
1644
1645 return rc;
1646
1647 out:
1648 rc_free_device(rc);
1649 return NULL;
1650 }
1651
1652 static int mceusb_dev_probe(struct usb_interface *intf,
1653 const struct usb_device_id *id)
1654 {
1655 struct usb_device *dev = interface_to_usbdev(intf);
1656 struct usb_host_interface *idesc;
1657 struct usb_endpoint_descriptor *ep = NULL;
1658 struct usb_endpoint_descriptor *ep_in = NULL;
1659 struct usb_endpoint_descriptor *ep_out = NULL;
1660 struct mceusb_dev *ir = NULL;
1661 int pipe, maxp, i, res;
1662 char buf[63], name[128] = "";
1663 enum mceusb_model_type model = id->driver_info;
1664 bool is_gen3;
1665 bool is_microsoft_gen1;
1666 bool tx_mask_normal;
1667 int ir_intfnum;
1668
1669 dev_dbg(&intf->dev, "%s called", __func__);
1670
1671 idesc = intf->cur_altsetting;
1672
1673 is_gen3 = mceusb_model[model].mce_gen3;
1674 is_microsoft_gen1 = mceusb_model[model].mce_gen1;
1675 tx_mask_normal = mceusb_model[model].tx_mask_normal;
1676 ir_intfnum = mceusb_model[model].ir_intfnum;
1677
1678 /* There are multi-function devices with non-IR interfaces */
1679 if (idesc->desc.bInterfaceNumber != ir_intfnum)
1680 return -ENODEV;
1681
1682 /* step through the endpoints to find first bulk in and out endpoint */
1683 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {
1684 ep = &idesc->endpoint[i].desc;
1685
1686 if (ep_in == NULL) {
1687 if (usb_endpoint_is_bulk_in(ep)) {
1688 ep_in = ep;
1689 dev_dbg(&intf->dev, "acceptable bulk inbound endpoint found\n");
1690 } else if (usb_endpoint_is_int_in(ep)) {
1691 ep_in = ep;
1692 ep_in->bInterval = 1;
1693 dev_dbg(&intf->dev, "acceptable interrupt inbound endpoint found\n");
1694 }
1695 }
1696
1697 if (ep_out == NULL) {
1698 if (usb_endpoint_is_bulk_out(ep)) {
1699 ep_out = ep;
1700 dev_dbg(&intf->dev, "acceptable bulk outbound endpoint found\n");
1701 } else if (usb_endpoint_is_int_out(ep)) {
1702 ep_out = ep;
1703 ep_out->bInterval = 1;
1704 dev_dbg(&intf->dev, "acceptable interrupt outbound endpoint found\n");
1705 }
1706 }
1707 }
1708 if (!ep_in || !ep_out) {
1709 dev_dbg(&intf->dev, "required endpoints not found\n");
1710 return -ENODEV;
1711 }
1712
1713 if (usb_endpoint_xfer_int(ep_in))
1714 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
1715 else
1716 pipe = usb_rcvbulkpipe(dev, ep_in->bEndpointAddress);
1717 maxp = usb_maxpacket(dev, pipe);
1718
1719 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
1720 if (!ir)
1721 goto mem_alloc_fail;
1722
1723 ir->pipe_in = pipe;
1724 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_KERNEL, &ir->dma_in);
1725 if (!ir->buf_in)
1726 goto buf_in_alloc_fail;
1727
1728 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
1729 if (!ir->urb_in)
1730 goto urb_in_alloc_fail;
1731
1732 ir->usbintf = intf;
1733 ir->usbdev = usb_get_dev(dev);
1734 ir->dev = &intf->dev;
1735 ir->len_in = maxp;
1736 ir->flags.microsoft_gen1 = is_microsoft_gen1;
1737 ir->flags.tx_mask_normal = tx_mask_normal;
1738 ir->flags.no_tx = mceusb_model[model].no_tx;
1739 ir->flags.rx2 = mceusb_model[model].rx2;
1740 ir->model = model;
1741
1742 /* Saving usb interface data for use by the transmitter routine */
1743 ir->usb_ep_out = ep_out;
1744 if (usb_endpoint_xfer_int(ep_out))
1745 ir->pipe_out = usb_sndintpipe(ir->usbdev,
1746 ep_out->bEndpointAddress);
1747 else
1748 ir->pipe_out = usb_sndbulkpipe(ir->usbdev,
1749 ep_out->bEndpointAddress);
1750
1751 if (dev->descriptor.iManufacturer
1752 && usb_string(dev, dev->descriptor.iManufacturer,
1753 buf, sizeof(buf)) > 0)
1754 strscpy(name, buf, sizeof(name));
1755 if (dev->descriptor.iProduct
1756 && usb_string(dev, dev->descriptor.iProduct,
1757 buf, sizeof(buf)) > 0)
1758 snprintf(name + strlen(name), sizeof(name) - strlen(name),
1759 " %s", buf);
1760
1761 /*
1762 * Initialize async USB error handler before registering
1763 * or activating any mceusb RX and TX functions
1764 */
1765 INIT_WORK(&ir->kevent, mceusb_deferred_kevent);
1766
1767 ir->rc = mceusb_init_rc_dev(ir);
1768 if (!ir->rc)
1769 goto rc_dev_fail;
1770
1771 /* wire up inbound data handler */
1772 if (usb_endpoint_xfer_int(ep_in))
1773 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,
1774 mceusb_dev_recv, ir, ep_in->bInterval);
1775 else
1776 usb_fill_bulk_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,
1777 mceusb_dev_recv, ir);
1778
1779 ir->urb_in->transfer_dma = ir->dma_in;
1780 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1781
1782 /* flush buffers on the device */
1783 dev_dbg(&intf->dev, "Flushing receive buffers");
1784 res = usb_submit_urb(ir->urb_in, GFP_KERNEL);
1785 if (res)
1786 dev_err(&intf->dev, "failed to flush buffers: %d", res);
1787
1788 /* figure out which firmware/emulator version this hardware has */
1789 mceusb_get_emulator_version(ir);
1790
1791 /* initialize device */
1792 if (ir->flags.microsoft_gen1)
1793 mceusb_gen1_init(ir);
1794 else if (!is_gen3)
1795 mceusb_gen2_init(ir);
1796
1797 mceusb_get_parameters(ir);
1798
1799 mceusb_flash_led(ir);
1800
1801 if (!ir->flags.no_tx)
1802 mceusb_set_tx_mask(ir->rc, MCE_DEFAULT_TX_MASK);
1803
1804 usb_set_intfdata(intf, ir);
1805
1806 /* enable wake via this device */
1807 device_set_wakeup_capable(ir->dev, true);
1808 device_set_wakeup_enable(ir->dev, true);
1809
1810 dev_info(&intf->dev, "Registered %s with mce emulator interface version %x",
1811 name, ir->emver);
1812 dev_info(&intf->dev, "%x tx ports (0x%x cabled) and %x rx sensors (0x%x active)",
1813 ir->num_txports, ir->txports_cabled,
1814 ir->num_rxports, ir->rxports_active);
1815
1816 return 0;
1817
1818 /* Error-handling path */
1819 rc_dev_fail:
1820 cancel_work_sync(&ir->kevent);
1821 usb_put_dev(ir->usbdev);
1822 usb_kill_urb(ir->urb_in);
1823 usb_free_urb(ir->urb_in);
1824 urb_in_alloc_fail:
1825 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in);
1826 buf_in_alloc_fail:
1827 kfree(ir);
1828 mem_alloc_fail:
1829 dev_err(&intf->dev, "%s: device setup failed!", __func__);
1830
1831 return -ENOMEM;
1832 }
1833
1834
1835 static void mceusb_dev_disconnect(struct usb_interface *intf)
1836 {
1837 struct usb_device *dev = interface_to_usbdev(intf);
1838 struct mceusb_dev *ir = usb_get_intfdata(intf);
1839
1840 dev_dbg(&intf->dev, "%s called", __func__);
1841
1842 usb_set_intfdata(intf, NULL);
1843
1844 if (!ir)
1845 return;
1846
1847 ir->usbdev = NULL;
1848 cancel_work_sync(&ir->kevent);
1849 rc_unregister_device(ir->rc);
1850 usb_kill_urb(ir->urb_in);
1851 usb_free_urb(ir->urb_in);
1852 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);
1853 usb_put_dev(dev);
1854
1855 kfree(ir);
1856 }
1857
1858 static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message)
1859 {
1860 struct mceusb_dev *ir = usb_get_intfdata(intf);
1861 dev_info(ir->dev, "suspend");
1862 usb_kill_urb(ir->urb_in);
1863 return 0;
1864 }
1865
1866 static int mceusb_dev_resume(struct usb_interface *intf)
1867 {
1868 struct mceusb_dev *ir = usb_get_intfdata(intf);
1869 dev_info(ir->dev, "resume");
1870 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))
1871 return -EIO;
1872 return 0;
1873 }
1874
1875 static struct usb_driver mceusb_dev_driver = {
1876 .name = DRIVER_NAME,
1877 .probe = mceusb_dev_probe,
1878 .disconnect = mceusb_dev_disconnect,
1879 .suspend = mceusb_dev_suspend,
1880 .resume = mceusb_dev_resume,
1881 .reset_resume = mceusb_dev_resume,
1882 .id_table = mceusb_dev_table
1883 };
1884
1885 module_usb_driver(mceusb_dev_driver);
1886
1887 MODULE_DESCRIPTION(DRIVER_DESC);
1888 MODULE_AUTHOR(DRIVER_AUTHOR);
1889 MODULE_LICENSE("GPL");
1890 MODULE_DEVICE_TABLE(usb, mceusb_dev_table);
Kernel DRM miscellaneous fixes and cross-tree changes