1 /* 2 * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers 3 * 4 * Copyright (c) 2010 by Jarod Wilson <jarod@redhat.com> 5 * 6 * Based on the original lirc_mceusb and lirc_mceusb2 drivers, by Dan 7 * Conti, Martin Blatter and Daniel Melander, the latter of which was 8 * in turn also based on the lirc_atiusb driver by Paul Miller. The 9 * two mce drivers were merged into one by Jarod Wilson, with transmit 10 * support for the 1st-gen device added primarily by Patrick Calhoun, 11 * with a bit of tweaks by Jarod. Debugging improvements and proper 12 * support for what appears to be 3rd-gen hardware added by Jarod. 13 * Initial port from lirc driver to ir-core drivery by Jarod, based 14 * partially on a port to an earlier proposed IR infrastructure by 15 * Jon Smirl, which included enhancements and simplifications to the 16 * incoming IR buffer parsing routines. 17 * 18 * 19 * This program is free software; you can redistribute it and/or modify 20 * it under the terms of the GNU General Public License as published by 21 * the Free Software Foundation; either version 2 of the License, or 22 * (at your option) any later version. 23 * 24 * This program is distributed in the hope that it will be useful, 25 * but WITHOUT ANY WARRANTY; without even the implied warranty of 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 27 * GNU General Public License for more details. 28 * 29 * You should have received a copy of the GNU General Public License 30 * along with this program; if not, write to the Free Software 31 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 32 * 33 */ 34 35 #include <linux/device.h> 36 #include <linux/module.h> 37 #include <linux/slab.h> 38 #include <linux/usb.h> 39 #include <linux/usb/input.h> 40 #include <media/rc-core.h> 41 42 #define DRIVER_VERSION "1.91" 43 #define DRIVER_AUTHOR "Jarod Wilson <jarod@wilsonet.com>" 44 #define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \ 45 "device driver" 46 #define DRIVER_NAME "mceusb" 47 48 #define USB_BUFLEN 32 /* USB reception buffer length */ 49 #define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */ 50 #define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */ 51 52 /* MCE constants */ 53 #define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */ 54 #define MCE_TIME_UNIT 50 /* Approx 50us resolution */ 55 #define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */ 56 #define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */ 57 #define MCE_IRDATA_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */ 58 #define MCE_IRDATA_TRAILER 0x80 /* End of IR data */ 59 #define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */ 60 #define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */ 61 #define MCE_DEFAULT_TX_MASK 0x03 /* Vals: TX1=0x01, TX2=0x02, ALL=0x03 */ 62 #define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */ 63 #define MCE_PULSE_MASK 0x7f /* Pulse mask */ 64 #define MCE_MAX_PULSE_LENGTH 0x7f /* Longest transmittable pulse symbol */ 65 66 #define MCE_HW_CMD_HEADER 0xff /* MCE hardware command header */ 67 #define MCE_COMMAND_HEADER 0x9f /* MCE command header */ 68 #define MCE_COMMAND_MASK 0xe0 /* Mask out command bits */ 69 #define MCE_COMMAND_NULL 0x00 /* These show up various places... */ 70 /* if buf[i] & MCE_COMMAND_MASK == 0x80 and buf[i] != MCE_COMMAND_HEADER, 71 * then we're looking at a raw IR data sample */ 72 #define MCE_COMMAND_IRDATA 0x80 73 #define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */ 74 75 /* Sub-commands, which follow MCE_COMMAND_HEADER or MCE_HW_CMD_HEADER */ 76 #define MCE_CMD_SIG_END 0x01 /* End of signal */ 77 #define MCE_CMD_PING 0x03 /* Ping device */ 78 #define MCE_CMD_UNKNOWN 0x04 /* Unknown */ 79 #define MCE_CMD_UNKNOWN2 0x05 /* Unknown */ 80 #define MCE_CMD_S_CARRIER 0x06 /* Set TX carrier frequency */ 81 #define MCE_CMD_G_CARRIER 0x07 /* Get TX carrier frequency */ 82 #define MCE_CMD_S_TXMASK 0x08 /* Set TX port bitmask */ 83 #define MCE_CMD_UNKNOWN3 0x09 /* Unknown */ 84 #define MCE_CMD_UNKNOWN4 0x0a /* Unknown */ 85 #define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */ 86 #define MCE_CMD_S_TIMEOUT 0x0c /* Set RX timeout value */ 87 #define MCE_CMD_G_TIMEOUT 0x0d /* Get RX timeout value */ 88 #define MCE_CMD_UNKNOWN5 0x0e /* Unknown */ 89 #define MCE_CMD_UNKNOWN6 0x0f /* Unknown */ 90 #define MCE_CMD_G_RXPORTSTS 0x11 /* Get RX port status */ 91 #define MCE_CMD_G_TXMASK 0x13 /* Set TX port bitmask */ 92 #define MCE_CMD_S_RXSENSOR 0x14 /* Set RX sensor (std/learning) */ 93 #define MCE_CMD_G_RXSENSOR 0x15 /* Get RX sensor (std/learning) */ 94 #define MCE_RSP_PULSE_COUNT 0x15 /* RX pulse count (only if learning) */ 95 #define MCE_CMD_TX_PORTS 0x16 /* Get number of TX ports */ 96 #define MCE_CMD_G_WAKESRC 0x17 /* Get wake source */ 97 #define MCE_CMD_UNKNOWN7 0x18 /* Unknown */ 98 #define MCE_CMD_UNKNOWN8 0x19 /* Unknown */ 99 #define MCE_CMD_UNKNOWN9 0x1b /* Unknown */ 100 #define MCE_CMD_DEVICE_RESET 0xaa /* Reset the hardware */ 101 #define MCE_RSP_CMD_INVALID 0xfe /* Invalid command issued */ 102 103 104 /* module parameters */ 105 #ifdef CONFIG_USB_DEBUG 106 static int debug = 1; 107 #else 108 static int debug; 109 #endif 110 111 #define mce_dbg(dev, fmt, ...) \ 112 do { \ 113 if (debug) \ 114 dev_info(dev, fmt, ## __VA_ARGS__); \ 115 } while (0) 116 117 /* general constants */ 118 #define SEND_FLAG_IN_PROGRESS 1 119 #define SEND_FLAG_COMPLETE 2 120 #define RECV_FLAG_IN_PROGRESS 3 121 #define RECV_FLAG_COMPLETE 4 122 123 #define MCEUSB_RX 1 124 #define MCEUSB_TX 2 125 126 #define VENDOR_PHILIPS 0x0471 127 #define VENDOR_SMK 0x0609 128 #define VENDOR_TATUNG 0x1460 129 #define VENDOR_GATEWAY 0x107b 130 #define VENDOR_SHUTTLE 0x1308 131 #define VENDOR_SHUTTLE2 0x051c 132 #define VENDOR_MITSUMI 0x03ee 133 #define VENDOR_TOPSEED 0x1784 134 #define VENDOR_RICAVISION 0x179d 135 #define VENDOR_ITRON 0x195d 136 #define VENDOR_FIC 0x1509 137 #define VENDOR_LG 0x043e 138 #define VENDOR_MICROSOFT 0x045e 139 #define VENDOR_FORMOSA 0x147a 140 #define VENDOR_FINTEK 0x1934 141 #define VENDOR_PINNACLE 0x2304 142 #define VENDOR_ECS 0x1019 143 #define VENDOR_WISTRON 0x0fb8 144 #define VENDOR_COMPRO 0x185b 145 #define VENDOR_NORTHSTAR 0x04eb 146 #define VENDOR_REALTEK 0x0bda 147 #define VENDOR_TIVO 0x105a 148 #define VENDOR_CONEXANT 0x0572 149 150 enum mceusb_model_type { 151 MCE_GEN2 = 0, /* Most boards */ 152 MCE_GEN1, 153 MCE_GEN3, 154 MCE_GEN2_TX_INV, 155 POLARIS_EVK, 156 CX_HYBRID_TV, 157 MULTIFUNCTION, 158 TIVO_KIT, 159 MCE_GEN2_NO_TX, 160 }; 161 162 struct mceusb_model { 163 u32 mce_gen1:1; 164 u32 mce_gen2:1; 165 u32 mce_gen3:1; 166 u32 tx_mask_normal:1; 167 u32 no_tx:1; 168 169 int ir_intfnum; 170 171 const char *rc_map; /* Allow specify a per-board map */ 172 const char *name; /* per-board name */ 173 }; 174 175 static const struct mceusb_model mceusb_model[] = { 176 [MCE_GEN1] = { 177 .mce_gen1 = 1, 178 .tx_mask_normal = 1, 179 }, 180 [MCE_GEN2] = { 181 .mce_gen2 = 1, 182 }, 183 [MCE_GEN2_NO_TX] = { 184 .mce_gen2 = 1, 185 .no_tx = 1, 186 }, 187 [MCE_GEN2_TX_INV] = { 188 .mce_gen2 = 1, 189 .tx_mask_normal = 1, 190 }, 191 [MCE_GEN3] = { 192 .mce_gen3 = 1, 193 .tx_mask_normal = 1, 194 }, 195 [POLARIS_EVK] = { 196 /* 197 * In fact, the EVK is shipped without 198 * remotes, but we should have something handy, 199 * to allow testing it 200 */ 201 .rc_map = RC_MAP_HAUPPAUGE, 202 .name = "Conexant Hybrid TV (cx231xx) MCE IR", 203 }, 204 [CX_HYBRID_TV] = { 205 .no_tx = 1, /* tx isn't wired up at all */ 206 .name = "Conexant Hybrid TV (cx231xx) MCE IR", 207 }, 208 [MULTIFUNCTION] = { 209 .mce_gen2 = 1, 210 .ir_intfnum = 2, 211 }, 212 [TIVO_KIT] = { 213 .mce_gen2 = 1, 214 .rc_map = RC_MAP_TIVO, 215 }, 216 }; 217 218 static struct usb_device_id mceusb_dev_table[] = { 219 /* Original Microsoft MCE IR Transceiver (often HP-branded) */ 220 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d), 221 .driver_info = MCE_GEN1 }, 222 /* Philips Infrared Transceiver - Sahara branded */ 223 { USB_DEVICE(VENDOR_PHILIPS, 0x0608) }, 224 /* Philips Infrared Transceiver - HP branded */ 225 { USB_DEVICE(VENDOR_PHILIPS, 0x060c), 226 .driver_info = MCE_GEN2_TX_INV }, 227 /* Philips SRM5100 */ 228 { USB_DEVICE(VENDOR_PHILIPS, 0x060d) }, 229 /* Philips Infrared Transceiver - Omaura */ 230 { USB_DEVICE(VENDOR_PHILIPS, 0x060f) }, 231 /* Philips Infrared Transceiver - Spinel plus */ 232 { USB_DEVICE(VENDOR_PHILIPS, 0x0613) }, 233 /* Philips eHome Infrared Transceiver */ 234 { USB_DEVICE(VENDOR_PHILIPS, 0x0815) }, 235 /* Philips/Spinel plus IR transceiver for ASUS */ 236 { USB_DEVICE(VENDOR_PHILIPS, 0x206c) }, 237 /* Philips/Spinel plus IR transceiver for ASUS */ 238 { USB_DEVICE(VENDOR_PHILIPS, 0x2088) }, 239 /* Philips IR transceiver (Dell branded) */ 240 { USB_DEVICE(VENDOR_PHILIPS, 0x2093) }, 241 /* Realtek MCE IR Receiver and card reader */ 242 { USB_DEVICE(VENDOR_REALTEK, 0x0161), 243 .driver_info = MULTIFUNCTION }, 244 /* SMK/Toshiba G83C0004D410 */ 245 { USB_DEVICE(VENDOR_SMK, 0x031d), 246 .driver_info = MCE_GEN2_TX_INV }, 247 /* SMK eHome Infrared Transceiver (Sony VAIO) */ 248 { USB_DEVICE(VENDOR_SMK, 0x0322), 249 .driver_info = MCE_GEN2_TX_INV }, 250 /* bundled with Hauppauge PVR-150 */ 251 { USB_DEVICE(VENDOR_SMK, 0x0334), 252 .driver_info = MCE_GEN2_TX_INV }, 253 /* SMK eHome Infrared Transceiver */ 254 { USB_DEVICE(VENDOR_SMK, 0x0338) }, 255 /* SMK/I-O Data GV-MC7/RCKIT Receiver */ 256 { USB_DEVICE(VENDOR_SMK, 0x0353), 257 .driver_info = MCE_GEN2_NO_TX }, 258 /* Tatung eHome Infrared Transceiver */ 259 { USB_DEVICE(VENDOR_TATUNG, 0x9150) }, 260 /* Shuttle eHome Infrared Transceiver */ 261 { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) }, 262 /* Shuttle eHome Infrared Transceiver */ 263 { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) }, 264 /* Gateway eHome Infrared Transceiver */ 265 { USB_DEVICE(VENDOR_GATEWAY, 0x3009) }, 266 /* Mitsumi */ 267 { USB_DEVICE(VENDOR_MITSUMI, 0x2501) }, 268 /* Topseed eHome Infrared Transceiver */ 269 { USB_DEVICE(VENDOR_TOPSEED, 0x0001), 270 .driver_info = MCE_GEN2_TX_INV }, 271 /* Topseed HP eHome Infrared Transceiver */ 272 { USB_DEVICE(VENDOR_TOPSEED, 0x0006), 273 .driver_info = MCE_GEN2_TX_INV }, 274 /* Topseed eHome Infrared Transceiver */ 275 { USB_DEVICE(VENDOR_TOPSEED, 0x0007), 276 .driver_info = MCE_GEN2_TX_INV }, 277 /* Topseed eHome Infrared Transceiver */ 278 { USB_DEVICE(VENDOR_TOPSEED, 0x0008), 279 .driver_info = MCE_GEN3 }, 280 /* Topseed eHome Infrared Transceiver */ 281 { USB_DEVICE(VENDOR_TOPSEED, 0x000a), 282 .driver_info = MCE_GEN2_TX_INV }, 283 /* Topseed eHome Infrared Transceiver */ 284 { USB_DEVICE(VENDOR_TOPSEED, 0x0011), 285 .driver_info = MCE_GEN3 }, 286 /* Ricavision internal Infrared Transceiver */ 287 { USB_DEVICE(VENDOR_RICAVISION, 0x0010) }, 288 /* Itron ione Libra Q-11 */ 289 { USB_DEVICE(VENDOR_ITRON, 0x7002) }, 290 /* FIC eHome Infrared Transceiver */ 291 { USB_DEVICE(VENDOR_FIC, 0x9242) }, 292 /* LG eHome Infrared Transceiver */ 293 { USB_DEVICE(VENDOR_LG, 0x9803) }, 294 /* Microsoft MCE Infrared Transceiver */ 295 { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) }, 296 /* Formosa eHome Infrared Transceiver */ 297 { USB_DEVICE(VENDOR_FORMOSA, 0xe015) }, 298 /* Formosa21 / eHome Infrared Receiver */ 299 { USB_DEVICE(VENDOR_FORMOSA, 0xe016) }, 300 /* Formosa aim / Trust MCE Infrared Receiver */ 301 { USB_DEVICE(VENDOR_FORMOSA, 0xe017), 302 .driver_info = MCE_GEN2_NO_TX }, 303 /* Formosa Industrial Computing / Beanbag Emulation Device */ 304 { USB_DEVICE(VENDOR_FORMOSA, 0xe018) }, 305 /* Formosa21 / eHome Infrared Receiver */ 306 { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) }, 307 /* Formosa Industrial Computing AIM IR605/A */ 308 { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) }, 309 /* Formosa Industrial Computing */ 310 { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) }, 311 /* Fintek eHome Infrared Transceiver (HP branded) */ 312 { USB_DEVICE(VENDOR_FINTEK, 0x5168) }, 313 /* Fintek eHome Infrared Transceiver */ 314 { USB_DEVICE(VENDOR_FINTEK, 0x0602) }, 315 /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */ 316 { USB_DEVICE(VENDOR_FINTEK, 0x0702) }, 317 /* Pinnacle Remote Kit */ 318 { USB_DEVICE(VENDOR_PINNACLE, 0x0225), 319 .driver_info = MCE_GEN3 }, 320 /* Elitegroup Computer Systems IR */ 321 { USB_DEVICE(VENDOR_ECS, 0x0f38) }, 322 /* Wistron Corp. eHome Infrared Receiver */ 323 { USB_DEVICE(VENDOR_WISTRON, 0x0002) }, 324 /* Compro K100 */ 325 { USB_DEVICE(VENDOR_COMPRO, 0x3020) }, 326 /* Compro K100 v2 */ 327 { USB_DEVICE(VENDOR_COMPRO, 0x3082) }, 328 /* Northstar Systems, Inc. eHome Infrared Transceiver */ 329 { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) }, 330 /* TiVo PC IR Receiver */ 331 { USB_DEVICE(VENDOR_TIVO, 0x2000), 332 .driver_info = TIVO_KIT }, 333 /* Conexant Hybrid TV "Shelby" Polaris SDK */ 334 { USB_DEVICE(VENDOR_CONEXANT, 0x58a1), 335 .driver_info = POLARIS_EVK }, 336 /* Conexant Hybrid TV RDU253S Polaris */ 337 { USB_DEVICE(VENDOR_CONEXANT, 0x58a5), 338 .driver_info = CX_HYBRID_TV }, 339 /* Terminating entry */ 340 { } 341 }; 342 343 /* data structure for each usb transceiver */ 344 struct mceusb_dev { 345 /* ir-core bits */ 346 struct rc_dev *rc; 347 348 /* optional features we can enable */ 349 bool carrier_report_enabled; 350 bool learning_enabled; 351 352 /* core device bits */ 353 struct device *dev; 354 355 /* usb */ 356 struct usb_device *usbdev; 357 struct urb *urb_in; 358 struct usb_endpoint_descriptor *usb_ep_in; 359 struct usb_endpoint_descriptor *usb_ep_out; 360 361 /* buffers and dma */ 362 unsigned char *buf_in; 363 unsigned int len_in; 364 dma_addr_t dma_in; 365 dma_addr_t dma_out; 366 367 enum { 368 CMD_HEADER = 0, 369 SUBCMD, 370 CMD_DATA, 371 PARSE_IRDATA, 372 } parser_state; 373 374 u8 cmd, rem; /* Remaining IR data bytes in packet */ 375 376 struct { 377 u32 connected:1; 378 u32 tx_mask_normal:1; 379 u32 microsoft_gen1:1; 380 u32 no_tx:1; 381 } flags; 382 383 /* transmit support */ 384 int send_flags; 385 u32 carrier; 386 unsigned char tx_mask; 387 388 char name[128]; 389 char phys[64]; 390 enum mceusb_model_type model; 391 }; 392 393 /* 394 * MCE Device Command Strings 395 * Device command responses vary from device to device... 396 * - DEVICE_RESET resets the hardware to its default state 397 * - GET_REVISION fetches the hardware/software revision, common 398 * replies are ff 0b 45 ff 1b 08 and ff 0b 50 ff 1b 42 399 * - GET_CARRIER_FREQ gets the carrier mode and frequency of the 400 * device, with replies in the form of 9f 06 MM FF, where MM is 0-3, 401 * meaning clk of 10000000, 2500000, 625000 or 156250, and FF is 402 * ((clk / frequency) - 1) 403 * - GET_RX_TIMEOUT fetches the receiver timeout in units of 50us, 404 * response in the form of 9f 0c msb lsb 405 * - GET_TX_BITMASK fetches the transmitter bitmask, replies in 406 * the form of 9f 08 bm, where bm is the bitmask 407 * - GET_RX_SENSOR fetches the RX sensor setting -- long-range 408 * general use one or short-range learning one, in the form of 409 * 9f 14 ss, where ss is either 01 for long-range or 02 for short 410 * - SET_CARRIER_FREQ sets a new carrier mode and frequency 411 * - SET_TX_BITMASK sets the transmitter bitmask 412 * - SET_RX_TIMEOUT sets the receiver timeout 413 * - SET_RX_SENSOR sets which receiver sensor to use 414 */ 415 static char DEVICE_RESET[] = {MCE_COMMAND_NULL, MCE_HW_CMD_HEADER, 416 MCE_CMD_DEVICE_RESET}; 417 static char GET_REVISION[] = {MCE_HW_CMD_HEADER, MCE_CMD_G_REVISION}; 418 static char GET_UNKNOWN[] = {MCE_HW_CMD_HEADER, MCE_CMD_UNKNOWN7}; 419 static char GET_UNKNOWN2[] = {MCE_COMMAND_HEADER, MCE_CMD_UNKNOWN2}; 420 static char GET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER, MCE_CMD_G_CARRIER}; 421 static char GET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TIMEOUT}; 422 static char GET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TXMASK}; 423 static char GET_RX_SENSOR[] = {MCE_COMMAND_HEADER, MCE_CMD_G_RXSENSOR}; 424 /* sub in desired values in lower byte or bytes for full command */ 425 /* FIXME: make use of these for transmit. 426 static char SET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER, 427 MCE_CMD_S_CARRIER, 0x00, 0x00}; 428 static char SET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_S_TXMASK, 0x00}; 429 static char SET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER, 430 MCE_CMD_S_TIMEOUT, 0x00, 0x00}; 431 static char SET_RX_SENSOR[] = {MCE_COMMAND_HEADER, 432 MCE_CMD_S_RXSENSOR, 0x00}; 433 */ 434 435 static int mceusb_cmdsize(u8 cmd, u8 subcmd) 436 { 437 int datasize = 0; 438 439 switch (cmd) { 440 case MCE_COMMAND_NULL: 441 if (subcmd == MCE_HW_CMD_HEADER) 442 datasize = 1; 443 break; 444 case MCE_HW_CMD_HEADER: 445 switch (subcmd) { 446 case MCE_CMD_G_REVISION: 447 datasize = 2; 448 break; 449 } 450 case MCE_COMMAND_HEADER: 451 switch (subcmd) { 452 case MCE_CMD_UNKNOWN: 453 case MCE_CMD_S_CARRIER: 454 case MCE_CMD_S_TIMEOUT: 455 case MCE_RSP_PULSE_COUNT: 456 datasize = 2; 457 break; 458 case MCE_CMD_SIG_END: 459 case MCE_CMD_S_TXMASK: 460 case MCE_CMD_S_RXSENSOR: 461 datasize = 1; 462 break; 463 } 464 } 465 return datasize; 466 } 467 468 static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf, 469 int offset, int len, bool out) 470 { 471 char codes[USB_BUFLEN * 3 + 1]; 472 char inout[9]; 473 u8 cmd, subcmd, data1, data2; 474 struct device *dev = ir->dev; 475 int i, start, skip = 0; 476 477 if (!debug) 478 return; 479 480 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ 481 if (ir->flags.microsoft_gen1 && !out && !offset) 482 skip = 2; 483 484 if (len <= skip) 485 return; 486 487 for (i = 0; i < len && i < USB_BUFLEN; i++) 488 snprintf(codes + i * 3, 4, "%02x ", buf[i + offset] & 0xff); 489 490 dev_info(dev, "%sx data: %s(length=%d)\n", 491 (out ? "t" : "r"), codes, len); 492 493 if (out) 494 strcpy(inout, "Request\0"); 495 else 496 strcpy(inout, "Got\0"); 497 498 start = offset + skip; 499 cmd = buf[start] & 0xff; 500 subcmd = buf[start + 1] & 0xff; 501 data1 = buf[start + 2] & 0xff; 502 data2 = buf[start + 3] & 0xff; 503 504 switch (cmd) { 505 case MCE_COMMAND_NULL: 506 if ((subcmd == MCE_HW_CMD_HEADER) && 507 (data1 == MCE_CMD_DEVICE_RESET)) 508 dev_info(dev, "Device reset requested\n"); 509 else 510 dev_info(dev, "Unknown command 0x%02x 0x%02x\n", 511 cmd, subcmd); 512 break; 513 case MCE_HW_CMD_HEADER: 514 switch (subcmd) { 515 case MCE_CMD_G_REVISION: 516 if (len == 2) 517 dev_info(dev, "Get hw/sw rev?\n"); 518 else 519 dev_info(dev, "hw/sw rev 0x%02x 0x%02x " 520 "0x%02x 0x%02x\n", data1, data2, 521 buf[start + 4], buf[start + 5]); 522 break; 523 case MCE_CMD_DEVICE_RESET: 524 dev_info(dev, "Device reset requested\n"); 525 break; 526 case MCE_RSP_CMD_INVALID: 527 dev_info(dev, "Previous command not supported\n"); 528 break; 529 case MCE_CMD_UNKNOWN7: 530 case MCE_CMD_UNKNOWN9: 531 default: 532 dev_info(dev, "Unknown command 0x%02x 0x%02x\n", 533 cmd, subcmd); 534 break; 535 } 536 break; 537 case MCE_COMMAND_HEADER: 538 switch (subcmd) { 539 case MCE_CMD_SIG_END: 540 dev_info(dev, "End of signal\n"); 541 break; 542 case MCE_CMD_PING: 543 dev_info(dev, "Ping\n"); 544 break; 545 case MCE_CMD_UNKNOWN: 546 dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n", 547 data1, data2); 548 break; 549 case MCE_CMD_S_CARRIER: 550 dev_info(dev, "%s carrier mode and freq of " 551 "0x%02x 0x%02x\n", inout, data1, data2); 552 break; 553 case MCE_CMD_G_CARRIER: 554 dev_info(dev, "Get carrier mode and freq\n"); 555 break; 556 case MCE_CMD_S_TXMASK: 557 dev_info(dev, "%s transmit blaster mask of 0x%02x\n", 558 inout, data1); 559 break; 560 case MCE_CMD_S_TIMEOUT: 561 /* value is in units of 50us, so x*50/1000 ms */ 562 dev_info(dev, "%s receive timeout of %d ms\n", 563 inout, 564 ((data1 << 8) | data2) * MCE_TIME_UNIT / 1000); 565 break; 566 case MCE_CMD_G_TIMEOUT: 567 dev_info(dev, "Get receive timeout\n"); 568 break; 569 case MCE_CMD_G_TXMASK: 570 dev_info(dev, "Get transmit blaster mask\n"); 571 break; 572 case MCE_CMD_S_RXSENSOR: 573 dev_info(dev, "%s %s-range receive sensor in use\n", 574 inout, data1 == 0x02 ? "short" : "long"); 575 break; 576 case MCE_CMD_G_RXSENSOR: 577 /* aka MCE_RSP_PULSE_COUNT */ 578 if (out) 579 dev_info(dev, "Get receive sensor\n"); 580 else if (ir->learning_enabled) 581 dev_info(dev, "RX pulse count: %d\n", 582 ((data1 << 8) | data2)); 583 break; 584 case MCE_RSP_CMD_INVALID: 585 dev_info(dev, "Error! Hardware is likely wedged...\n"); 586 break; 587 case MCE_CMD_UNKNOWN2: 588 case MCE_CMD_UNKNOWN3: 589 case MCE_CMD_UNKNOWN5: 590 default: 591 dev_info(dev, "Unknown command 0x%02x 0x%02x\n", 592 cmd, subcmd); 593 break; 594 } 595 break; 596 default: 597 break; 598 } 599 600 if (cmd == MCE_IRDATA_TRAILER) 601 dev_info(dev, "End of raw IR data\n"); 602 else if ((cmd != MCE_COMMAND_HEADER) && 603 ((cmd & MCE_COMMAND_MASK) == MCE_COMMAND_IRDATA)) 604 dev_info(dev, "Raw IR data, %d pulse/space samples\n", ir->rem); 605 } 606 607 static void mce_async_callback(struct urb *urb, struct pt_regs *regs) 608 { 609 struct mceusb_dev *ir; 610 int len; 611 612 if (!urb) 613 return; 614 615 ir = urb->context; 616 if (ir) { 617 len = urb->actual_length; 618 619 mce_dbg(ir->dev, "callback called (status=%d len=%d)\n", 620 urb->status, len); 621 622 mceusb_dev_printdata(ir, urb->transfer_buffer, 0, len, true); 623 } 624 625 /* the transfer buffer and urb were allocated in mce_request_packet */ 626 kfree(urb->transfer_buffer); 627 usb_free_urb(urb); 628 } 629 630 /* request incoming or send outgoing usb packet - used to initialize remote */ 631 static void mce_request_packet(struct mceusb_dev *ir, unsigned char *data, 632 int size, int urb_type) 633 { 634 int res, pipe; 635 struct urb *async_urb; 636 struct device *dev = ir->dev; 637 unsigned char *async_buf; 638 639 if (urb_type == MCEUSB_TX) { 640 async_urb = usb_alloc_urb(0, GFP_KERNEL); 641 if (unlikely(!async_urb)) { 642 dev_err(dev, "Error, couldn't allocate urb!\n"); 643 return; 644 } 645 646 async_buf = kzalloc(size, GFP_KERNEL); 647 if (!async_buf) { 648 dev_err(dev, "Error, couldn't allocate buf!\n"); 649 usb_free_urb(async_urb); 650 return; 651 } 652 653 /* outbound data */ 654 pipe = usb_sndintpipe(ir->usbdev, 655 ir->usb_ep_out->bEndpointAddress); 656 usb_fill_int_urb(async_urb, ir->usbdev, pipe, 657 async_buf, size, (usb_complete_t)mce_async_callback, 658 ir, ir->usb_ep_out->bInterval); 659 memcpy(async_buf, data, size); 660 661 } else if (urb_type == MCEUSB_RX) { 662 /* standard request */ 663 async_urb = ir->urb_in; 664 ir->send_flags = RECV_FLAG_IN_PROGRESS; 665 666 } else { 667 dev_err(dev, "Error! Unknown urb type %d\n", urb_type); 668 return; 669 } 670 671 mce_dbg(dev, "receive request called (size=%#x)\n", size); 672 673 async_urb->transfer_buffer_length = size; 674 async_urb->dev = ir->usbdev; 675 676 res = usb_submit_urb(async_urb, GFP_ATOMIC); 677 if (res) { 678 mce_dbg(dev, "receive request FAILED! (res=%d)\n", res); 679 return; 680 } 681 mce_dbg(dev, "receive request complete (res=%d)\n", res); 682 } 683 684 static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size) 685 { 686 mce_request_packet(ir, data, size, MCEUSB_TX); 687 } 688 689 static void mce_flush_rx_buffer(struct mceusb_dev *ir, int size) 690 { 691 mce_request_packet(ir, NULL, size, MCEUSB_RX); 692 } 693 694 /* Send data out the IR blaster port(s) */ 695 static int mceusb_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count) 696 { 697 struct mceusb_dev *ir = dev->priv; 698 int i, ret = 0; 699 int cmdcount = 0; 700 unsigned char *cmdbuf; /* MCE command buffer */ 701 long signal_duration = 0; /* Singnal length in us */ 702 struct timeval start_time, end_time; 703 704 do_gettimeofday(&start_time); 705 706 cmdbuf = kzalloc(sizeof(unsigned) * MCE_CMDBUF_SIZE, GFP_KERNEL); 707 if (!cmdbuf) 708 return -ENOMEM; 709 710 /* MCE tx init header */ 711 cmdbuf[cmdcount++] = MCE_COMMAND_HEADER; 712 cmdbuf[cmdcount++] = MCE_CMD_S_TXMASK; 713 cmdbuf[cmdcount++] = ir->tx_mask; 714 715 /* Generate mce packet data */ 716 for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) { 717 signal_duration += txbuf[i]; 718 txbuf[i] = txbuf[i] / MCE_TIME_UNIT; 719 720 do { /* loop to support long pulses/spaces > 127*50us=6.35ms */ 721 722 /* Insert mce packet header every 4th entry */ 723 if ((cmdcount < MCE_CMDBUF_SIZE) && 724 (cmdcount - MCE_TX_HEADER_LENGTH) % 725 MCE_CODE_LENGTH == 0) 726 cmdbuf[cmdcount++] = MCE_IRDATA_HEADER; 727 728 /* Insert mce packet data */ 729 if (cmdcount < MCE_CMDBUF_SIZE) 730 cmdbuf[cmdcount++] = 731 (txbuf[i] < MCE_PULSE_BIT ? 732 txbuf[i] : MCE_MAX_PULSE_LENGTH) | 733 (i & 1 ? 0x00 : MCE_PULSE_BIT); 734 else { 735 ret = -EINVAL; 736 goto out; 737 } 738 739 } while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) && 740 (txbuf[i] -= MCE_MAX_PULSE_LENGTH)); 741 } 742 743 /* Fix packet length in last header */ 744 cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] = 745 MCE_COMMAND_IRDATA + (cmdcount - MCE_TX_HEADER_LENGTH) % 746 MCE_CODE_LENGTH - 1; 747 748 /* Check if we have room for the empty packet at the end */ 749 if (cmdcount >= MCE_CMDBUF_SIZE) { 750 ret = -EINVAL; 751 goto out; 752 } 753 754 /* All mce commands end with an empty packet (0x80) */ 755 cmdbuf[cmdcount++] = MCE_IRDATA_TRAILER; 756 757 /* Transmit the command to the mce device */ 758 mce_async_out(ir, cmdbuf, cmdcount); 759 760 /* 761 * The lircd gap calculation expects the write function to 762 * wait the time it takes for the ircommand to be sent before 763 * it returns. 764 */ 765 do_gettimeofday(&end_time); 766 signal_duration -= (end_time.tv_usec - start_time.tv_usec) + 767 (end_time.tv_sec - start_time.tv_sec) * 1000000; 768 769 /* delay with the closest number of ticks */ 770 set_current_state(TASK_INTERRUPTIBLE); 771 schedule_timeout(usecs_to_jiffies(signal_duration)); 772 773 out: 774 kfree(cmdbuf); 775 return ret ? ret : count; 776 } 777 778 /* Sets active IR outputs -- mce devices typically have two */ 779 static int mceusb_set_tx_mask(struct rc_dev *dev, u32 mask) 780 { 781 struct mceusb_dev *ir = dev->priv; 782 783 if (ir->flags.tx_mask_normal) 784 ir->tx_mask = mask; 785 else 786 ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ? 787 mask ^ MCE_DEFAULT_TX_MASK : mask) << 1; 788 789 return 0; 790 } 791 792 /* Sets the send carrier frequency and mode */ 793 static int mceusb_set_tx_carrier(struct rc_dev *dev, u32 carrier) 794 { 795 struct mceusb_dev *ir = dev->priv; 796 int clk = 10000000; 797 int prescaler = 0, divisor = 0; 798 unsigned char cmdbuf[4] = { MCE_COMMAND_HEADER, 799 MCE_CMD_S_CARRIER, 0x00, 0x00 }; 800 801 /* Carrier has changed */ 802 if (ir->carrier != carrier) { 803 804 if (carrier == 0) { 805 ir->carrier = carrier; 806 cmdbuf[2] = MCE_CMD_SIG_END; 807 cmdbuf[3] = MCE_IRDATA_TRAILER; 808 mce_dbg(ir->dev, "%s: disabling carrier " 809 "modulation\n", __func__); 810 mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); 811 return carrier; 812 } 813 814 for (prescaler = 0; prescaler < 4; ++prescaler) { 815 divisor = (clk >> (2 * prescaler)) / carrier; 816 if (divisor <= 0xff) { 817 ir->carrier = carrier; 818 cmdbuf[2] = prescaler; 819 cmdbuf[3] = divisor; 820 mce_dbg(ir->dev, "%s: requesting %u HZ " 821 "carrier\n", __func__, carrier); 822 823 /* Transmit new carrier to mce device */ 824 mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); 825 return carrier; 826 } 827 } 828 829 return -EINVAL; 830 831 } 832 833 return carrier; 834 } 835 836 /* 837 * We don't do anything but print debug spew for many of the command bits 838 * we receive from the hardware, but some of them are useful information 839 * we want to store so that we can use them. 840 */ 841 static void mceusb_handle_command(struct mceusb_dev *ir, int index) 842 { 843 u8 hi = ir->buf_in[index + 1] & 0xff; 844 u8 lo = ir->buf_in[index + 2] & 0xff; 845 846 switch (ir->buf_in[index]) { 847 /* 2-byte return value commands */ 848 case MCE_CMD_S_TIMEOUT: 849 ir->rc->timeout = US_TO_NS((hi << 8 | lo) * MCE_TIME_UNIT); 850 break; 851 852 /* 1-byte return value commands */ 853 case MCE_CMD_S_TXMASK: 854 ir->tx_mask = hi; 855 break; 856 case MCE_CMD_S_RXSENSOR: 857 ir->learning_enabled = (hi == 0x02); 858 break; 859 default: 860 break; 861 } 862 } 863 864 static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len) 865 { 866 DEFINE_IR_RAW_EVENT(rawir); 867 int i = 0; 868 869 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ 870 if (ir->flags.microsoft_gen1) 871 i = 2; 872 873 /* if there's no data, just return now */ 874 if (buf_len <= i) 875 return; 876 877 for (; i < buf_len; i++) { 878 switch (ir->parser_state) { 879 case SUBCMD: 880 ir->rem = mceusb_cmdsize(ir->cmd, ir->buf_in[i]); 881 mceusb_dev_printdata(ir, ir->buf_in, i - 1, 882 ir->rem + 2, false); 883 mceusb_handle_command(ir, i); 884 ir->parser_state = CMD_DATA; 885 break; 886 case PARSE_IRDATA: 887 ir->rem--; 888 init_ir_raw_event(&rawir); 889 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0); 890 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK) 891 * US_TO_NS(MCE_TIME_UNIT); 892 893 mce_dbg(ir->dev, "Storing %s with duration %d\n", 894 rawir.pulse ? "pulse" : "space", 895 rawir.duration); 896 897 ir_raw_event_store_with_filter(ir->rc, &rawir); 898 break; 899 case CMD_DATA: 900 ir->rem--; 901 break; 902 case CMD_HEADER: 903 /* decode mce packets of the form (84),AA,BB,CC,DD */ 904 /* IR data packets can span USB messages - rem */ 905 ir->cmd = ir->buf_in[i]; 906 if ((ir->cmd == MCE_COMMAND_HEADER) || 907 ((ir->cmd & MCE_COMMAND_MASK) != 908 MCE_COMMAND_IRDATA)) { 909 ir->parser_state = SUBCMD; 910 continue; 911 } 912 ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK); 913 mceusb_dev_printdata(ir, ir->buf_in, 914 i, ir->rem + 1, false); 915 if (ir->rem) 916 ir->parser_state = PARSE_IRDATA; 917 else 918 ir_raw_event_reset(ir->rc); 919 break; 920 } 921 922 if (ir->parser_state != CMD_HEADER && !ir->rem) 923 ir->parser_state = CMD_HEADER; 924 } 925 mce_dbg(ir->dev, "processed IR data, calling ir_raw_event_handle\n"); 926 ir_raw_event_handle(ir->rc); 927 } 928 929 static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs) 930 { 931 struct mceusb_dev *ir; 932 int buf_len; 933 934 if (!urb) 935 return; 936 937 ir = urb->context; 938 if (!ir) { 939 usb_unlink_urb(urb); 940 return; 941 } 942 943 buf_len = urb->actual_length; 944 945 if (ir->send_flags == RECV_FLAG_IN_PROGRESS) { 946 ir->send_flags = SEND_FLAG_COMPLETE; 947 mce_dbg(ir->dev, "setup answer received %d bytes\n", 948 buf_len); 949 } 950 951 switch (urb->status) { 952 /* success */ 953 case 0: 954 mceusb_process_ir_data(ir, buf_len); 955 break; 956 957 case -ECONNRESET: 958 case -ENOENT: 959 case -ESHUTDOWN: 960 usb_unlink_urb(urb); 961 return; 962 963 case -EPIPE: 964 default: 965 mce_dbg(ir->dev, "Error: urb status = %d\n", urb->status); 966 break; 967 } 968 969 usb_submit_urb(urb, GFP_ATOMIC); 970 } 971 972 static void mceusb_gen1_init(struct mceusb_dev *ir) 973 { 974 int ret; 975 struct device *dev = ir->dev; 976 char *data; 977 978 data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL); 979 if (!data) { 980 dev_err(dev, "%s: memory allocation failed!\n", __func__); 981 return; 982 } 983 984 /* 985 * This is a strange one. Windows issues a set address to the device 986 * on the receive control pipe and expect a certain value pair back 987 */ 988 ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0), 989 USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0, 990 data, USB_CTRL_MSG_SZ, HZ * 3); 991 mce_dbg(dev, "%s - ret = %d\n", __func__, ret); 992 mce_dbg(dev, "%s - data[0] = %d, data[1] = %d\n", 993 __func__, data[0], data[1]); 994 995 /* set feature: bit rate 38400 bps */ 996 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 997 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR, 998 0xc04e, 0x0000, NULL, 0, HZ * 3); 999 1000 mce_dbg(dev, "%s - ret = %d\n", __func__, ret); 1001 1002 /* bRequest 4: set char length to 8 bits */ 1003 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 1004 4, USB_TYPE_VENDOR, 1005 0x0808, 0x0000, NULL, 0, HZ * 3); 1006 mce_dbg(dev, "%s - retB = %d\n", __func__, ret); 1007 1008 /* bRequest 2: set handshaking to use DTR/DSR */ 1009 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 1010 2, USB_TYPE_VENDOR, 1011 0x0000, 0x0100, NULL, 0, HZ * 3); 1012 mce_dbg(dev, "%s - retC = %d\n", __func__, ret); 1013 1014 /* device reset */ 1015 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET)); 1016 1017 /* get hw/sw revision? */ 1018 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION)); 1019 1020 kfree(data); 1021 }; 1022 1023 static void mceusb_gen2_init(struct mceusb_dev *ir) 1024 { 1025 /* device reset */ 1026 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET)); 1027 1028 /* get hw/sw revision? */ 1029 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION)); 1030 1031 /* unknown what the next two actually return... */ 1032 mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN)); 1033 mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2)); 1034 } 1035 1036 static void mceusb_get_parameters(struct mceusb_dev *ir) 1037 { 1038 /* get the carrier and frequency */ 1039 mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ)); 1040 1041 if (!ir->flags.no_tx) 1042 /* get the transmitter bitmask */ 1043 mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK)); 1044 1045 /* get receiver timeout value */ 1046 mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT)); 1047 1048 /* get receiver sensor setting */ 1049 mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR)); 1050 } 1051 1052 static struct rc_dev *mceusb_init_rc_dev(struct mceusb_dev *ir) 1053 { 1054 struct device *dev = ir->dev; 1055 struct rc_dev *rc; 1056 int ret; 1057 1058 rc = rc_allocate_device(); 1059 if (!rc) { 1060 dev_err(dev, "remote dev allocation failed\n"); 1061 goto out; 1062 } 1063 1064 snprintf(ir->name, sizeof(ir->name), "%s (%04x:%04x)", 1065 mceusb_model[ir->model].name ? 1066 mceusb_model[ir->model].name : 1067 "Media Center Ed. eHome Infrared Remote Transceiver", 1068 le16_to_cpu(ir->usbdev->descriptor.idVendor), 1069 le16_to_cpu(ir->usbdev->descriptor.idProduct)); 1070 1071 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys)); 1072 1073 rc->input_name = ir->name; 1074 rc->input_phys = ir->phys; 1075 usb_to_input_id(ir->usbdev, &rc->input_id); 1076 rc->dev.parent = dev; 1077 rc->priv = ir; 1078 rc->driver_type = RC_DRIVER_IR_RAW; 1079 rc->allowed_protos = RC_TYPE_ALL; 1080 rc->timeout = MS_TO_NS(100); 1081 if (!ir->flags.no_tx) { 1082 rc->s_tx_mask = mceusb_set_tx_mask; 1083 rc->s_tx_carrier = mceusb_set_tx_carrier; 1084 rc->tx_ir = mceusb_tx_ir; 1085 } 1086 rc->driver_name = DRIVER_NAME; 1087 rc->map_name = mceusb_model[ir->model].rc_map ? 1088 mceusb_model[ir->model].rc_map : RC_MAP_RC6_MCE; 1089 1090 ret = rc_register_device(rc); 1091 if (ret < 0) { 1092 dev_err(dev, "remote dev registration failed\n"); 1093 goto out; 1094 } 1095 1096 return rc; 1097 1098 out: 1099 rc_free_device(rc); 1100 return NULL; 1101 } 1102 1103 static int __devinit mceusb_dev_probe(struct usb_interface *intf, 1104 const struct usb_device_id *id) 1105 { 1106 struct usb_device *dev = interface_to_usbdev(intf); 1107 struct usb_host_interface *idesc; 1108 struct usb_endpoint_descriptor *ep = NULL; 1109 struct usb_endpoint_descriptor *ep_in = NULL; 1110 struct usb_endpoint_descriptor *ep_out = NULL; 1111 struct mceusb_dev *ir = NULL; 1112 int pipe, maxp, i; 1113 char buf[63], name[128] = ""; 1114 enum mceusb_model_type model = id->driver_info; 1115 bool is_gen3; 1116 bool is_microsoft_gen1; 1117 bool tx_mask_normal; 1118 int ir_intfnum; 1119 1120 mce_dbg(&intf->dev, "%s called\n", __func__); 1121 1122 idesc = intf->cur_altsetting; 1123 1124 is_gen3 = mceusb_model[model].mce_gen3; 1125 is_microsoft_gen1 = mceusb_model[model].mce_gen1; 1126 tx_mask_normal = mceusb_model[model].tx_mask_normal; 1127 ir_intfnum = mceusb_model[model].ir_intfnum; 1128 1129 /* There are multi-function devices with non-IR interfaces */ 1130 if (idesc->desc.bInterfaceNumber != ir_intfnum) 1131 return -ENODEV; 1132 1133 /* step through the endpoints to find first bulk in and out endpoint */ 1134 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) { 1135 ep = &idesc->endpoint[i].desc; 1136 1137 if ((ep_in == NULL) 1138 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 1139 == USB_DIR_IN) 1140 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1141 == USB_ENDPOINT_XFER_BULK) 1142 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1143 == USB_ENDPOINT_XFER_INT))) { 1144 1145 ep_in = ep; 1146 ep_in->bmAttributes = USB_ENDPOINT_XFER_INT; 1147 ep_in->bInterval = 1; 1148 mce_dbg(&intf->dev, "acceptable inbound endpoint " 1149 "found\n"); 1150 } 1151 1152 if ((ep_out == NULL) 1153 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 1154 == USB_DIR_OUT) 1155 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1156 == USB_ENDPOINT_XFER_BULK) 1157 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1158 == USB_ENDPOINT_XFER_INT))) { 1159 1160 ep_out = ep; 1161 ep_out->bmAttributes = USB_ENDPOINT_XFER_INT; 1162 ep_out->bInterval = 1; 1163 mce_dbg(&intf->dev, "acceptable outbound endpoint " 1164 "found\n"); 1165 } 1166 } 1167 if (ep_in == NULL) { 1168 mce_dbg(&intf->dev, "inbound and/or endpoint not found\n"); 1169 return -ENODEV; 1170 } 1171 1172 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress); 1173 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 1174 1175 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL); 1176 if (!ir) 1177 goto mem_alloc_fail; 1178 1179 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in); 1180 if (!ir->buf_in) 1181 goto buf_in_alloc_fail; 1182 1183 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL); 1184 if (!ir->urb_in) 1185 goto urb_in_alloc_fail; 1186 1187 ir->usbdev = dev; 1188 ir->dev = &intf->dev; 1189 ir->len_in = maxp; 1190 ir->flags.microsoft_gen1 = is_microsoft_gen1; 1191 ir->flags.tx_mask_normal = tx_mask_normal; 1192 ir->flags.no_tx = mceusb_model[model].no_tx; 1193 ir->model = model; 1194 1195 /* Saving usb interface data for use by the transmitter routine */ 1196 ir->usb_ep_in = ep_in; 1197 ir->usb_ep_out = ep_out; 1198 1199 if (dev->descriptor.iManufacturer 1200 && usb_string(dev, dev->descriptor.iManufacturer, 1201 buf, sizeof(buf)) > 0) 1202 strlcpy(name, buf, sizeof(name)); 1203 if (dev->descriptor.iProduct 1204 && usb_string(dev, dev->descriptor.iProduct, 1205 buf, sizeof(buf)) > 0) 1206 snprintf(name + strlen(name), sizeof(name) - strlen(name), 1207 " %s", buf); 1208 1209 ir->rc = mceusb_init_rc_dev(ir); 1210 if (!ir->rc) 1211 goto rc_dev_fail; 1212 1213 /* wire up inbound data handler */ 1214 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, 1215 maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval); 1216 ir->urb_in->transfer_dma = ir->dma_in; 1217 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 1218 1219 /* flush buffers on the device */ 1220 mce_dbg(&intf->dev, "Flushing receive buffers\n"); 1221 mce_flush_rx_buffer(ir, maxp); 1222 1223 /* initialize device */ 1224 if (ir->flags.microsoft_gen1) 1225 mceusb_gen1_init(ir); 1226 else if (!is_gen3) 1227 mceusb_gen2_init(ir); 1228 1229 mceusb_get_parameters(ir); 1230 1231 if (!ir->flags.no_tx) 1232 mceusb_set_tx_mask(ir->rc, MCE_DEFAULT_TX_MASK); 1233 1234 usb_set_intfdata(intf, ir); 1235 1236 dev_info(&intf->dev, "Registered %s on usb%d:%d\n", name, 1237 dev->bus->busnum, dev->devnum); 1238 1239 return 0; 1240 1241 /* Error-handling path */ 1242 rc_dev_fail: 1243 usb_free_urb(ir->urb_in); 1244 urb_in_alloc_fail: 1245 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in); 1246 buf_in_alloc_fail: 1247 kfree(ir); 1248 mem_alloc_fail: 1249 dev_err(&intf->dev, "%s: device setup failed!\n", __func__); 1250 1251 return -ENOMEM; 1252 } 1253 1254 1255 static void __devexit mceusb_dev_disconnect(struct usb_interface *intf) 1256 { 1257 struct usb_device *dev = interface_to_usbdev(intf); 1258 struct mceusb_dev *ir = usb_get_intfdata(intf); 1259 1260 usb_set_intfdata(intf, NULL); 1261 1262 if (!ir) 1263 return; 1264 1265 ir->usbdev = NULL; 1266 rc_unregister_device(ir->rc); 1267 usb_kill_urb(ir->urb_in); 1268 usb_free_urb(ir->urb_in); 1269 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in); 1270 1271 kfree(ir); 1272 } 1273 1274 static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message) 1275 { 1276 struct mceusb_dev *ir = usb_get_intfdata(intf); 1277 dev_info(ir->dev, "suspend\n"); 1278 usb_kill_urb(ir->urb_in); 1279 return 0; 1280 } 1281 1282 static int mceusb_dev_resume(struct usb_interface *intf) 1283 { 1284 struct mceusb_dev *ir = usb_get_intfdata(intf); 1285 dev_info(ir->dev, "resume\n"); 1286 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC)) 1287 return -EIO; 1288 return 0; 1289 } 1290 1291 static struct usb_driver mceusb_dev_driver = { 1292 .name = DRIVER_NAME, 1293 .probe = mceusb_dev_probe, 1294 .disconnect = mceusb_dev_disconnect, 1295 .suspend = mceusb_dev_suspend, 1296 .resume = mceusb_dev_resume, 1297 .reset_resume = mceusb_dev_resume, 1298 .id_table = mceusb_dev_table 1299 }; 1300 1301 static int __init mceusb_dev_init(void) 1302 { 1303 int ret; 1304 1305 ret = usb_register(&mceusb_dev_driver); 1306 if (ret < 0) 1307 printk(KERN_ERR DRIVER_NAME 1308 ": usb register failed, result = %d\n", ret); 1309 1310 return ret; 1311 } 1312 1313 static void __exit mceusb_dev_exit(void) 1314 { 1315 usb_deregister(&mceusb_dev_driver); 1316 } 1317 1318 module_init(mceusb_dev_init); 1319 module_exit(mceusb_dev_exit); 1320 1321 MODULE_DESCRIPTION(DRIVER_DESC); 1322 MODULE_AUTHOR(DRIVER_AUTHOR); 1323 MODULE_LICENSE("GPL"); 1324 MODULE_DEVICE_TABLE(usb, mceusb_dev_table); 1325 1326 module_param(debug, bool, S_IRUGO | S_IWUSR); 1327 MODULE_PARM_DESC(debug, "Debug enabled or not"); 1328