1 /* 2 * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers 3 * 4 * Copyright (c) 2010 by Jarod Wilson <jarod@redhat.com> 5 * 6 * Based on the original lirc_mceusb and lirc_mceusb2 drivers, by Dan 7 * Conti, Martin Blatter and Daniel Melander, the latter of which was 8 * in turn also based on the lirc_atiusb driver by Paul Miller. The 9 * two mce drivers were merged into one by Jarod Wilson, with transmit 10 * support for the 1st-gen device added primarily by Patrick Calhoun, 11 * with a bit of tweaks by Jarod. Debugging improvements and proper 12 * support for what appears to be 3rd-gen hardware added by Jarod. 13 * Initial port from lirc driver to ir-core drivery by Jarod, based 14 * partially on a port to an earlier proposed IR infrastructure by 15 * Jon Smirl, which included enhancements and simplifications to the 16 * incoming IR buffer parsing routines. 17 * 18 * 19 * This program is free software; you can redistribute it and/or modify 20 * it under the terms of the GNU General Public License as published by 21 * the Free Software Foundation; either version 2 of the License, or 22 * (at your option) any later version. 23 * 24 * This program is distributed in the hope that it will be useful, 25 * but WITHOUT ANY WARRANTY; without even the implied warranty of 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 27 * GNU General Public License for more details. 28 * 29 * You should have received a copy of the GNU General Public License 30 * along with this program; if not, write to the Free Software 31 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 32 * 33 */ 34 35 #include <linux/device.h> 36 #include <linux/module.h> 37 #include <linux/slab.h> 38 #include <linux/usb.h> 39 #include <linux/usb/input.h> 40 #include <media/rc-core.h> 41 42 #define DRIVER_VERSION "1.91" 43 #define DRIVER_AUTHOR "Jarod Wilson <jarod@wilsonet.com>" 44 #define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \ 45 "device driver" 46 #define DRIVER_NAME "mceusb" 47 48 #define USB_BUFLEN 32 /* USB reception buffer length */ 49 #define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */ 50 #define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */ 51 52 /* MCE constants */ 53 #define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */ 54 #define MCE_TIME_UNIT 50 /* Approx 50us resolution */ 55 #define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */ 56 #define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */ 57 #define MCE_IRDATA_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */ 58 #define MCE_IRDATA_TRAILER 0x80 /* End of IR data */ 59 #define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */ 60 #define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */ 61 #define MCE_DEFAULT_TX_MASK 0x03 /* Vals: TX1=0x01, TX2=0x02, ALL=0x03 */ 62 #define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */ 63 #define MCE_PULSE_MASK 0x7f /* Pulse mask */ 64 #define MCE_MAX_PULSE_LENGTH 0x7f /* Longest transmittable pulse symbol */ 65 66 #define MCE_HW_CMD_HEADER 0xff /* MCE hardware command header */ 67 #define MCE_COMMAND_HEADER 0x9f /* MCE command header */ 68 #define MCE_COMMAND_MASK 0xe0 /* Mask out command bits */ 69 #define MCE_COMMAND_NULL 0x00 /* These show up various places... */ 70 /* if buf[i] & MCE_COMMAND_MASK == 0x80 and buf[i] != MCE_COMMAND_HEADER, 71 * then we're looking at a raw IR data sample */ 72 #define MCE_COMMAND_IRDATA 0x80 73 #define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */ 74 75 /* Sub-commands, which follow MCE_COMMAND_HEADER or MCE_HW_CMD_HEADER */ 76 #define MCE_CMD_SIG_END 0x01 /* End of signal */ 77 #define MCE_CMD_PING 0x03 /* Ping device */ 78 #define MCE_CMD_UNKNOWN 0x04 /* Unknown */ 79 #define MCE_CMD_UNKNOWN2 0x05 /* Unknown */ 80 #define MCE_CMD_S_CARRIER 0x06 /* Set TX carrier frequency */ 81 #define MCE_CMD_G_CARRIER 0x07 /* Get TX carrier frequency */ 82 #define MCE_CMD_S_TXMASK 0x08 /* Set TX port bitmask */ 83 #define MCE_CMD_UNKNOWN3 0x09 /* Unknown */ 84 #define MCE_CMD_UNKNOWN4 0x0a /* Unknown */ 85 #define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */ 86 #define MCE_CMD_S_TIMEOUT 0x0c /* Set RX timeout value */ 87 #define MCE_CMD_G_TIMEOUT 0x0d /* Get RX timeout value */ 88 #define MCE_CMD_UNKNOWN5 0x0e /* Unknown */ 89 #define MCE_CMD_UNKNOWN6 0x0f /* Unknown */ 90 #define MCE_CMD_G_RXPORTSTS 0x11 /* Get RX port status */ 91 #define MCE_CMD_G_TXMASK 0x13 /* Set TX port bitmask */ 92 #define MCE_CMD_S_RXSENSOR 0x14 /* Set RX sensor (std/learning) */ 93 #define MCE_CMD_G_RXSENSOR 0x15 /* Get RX sensor (std/learning) */ 94 #define MCE_RSP_PULSE_COUNT 0x15 /* RX pulse count (only if learning) */ 95 #define MCE_CMD_TX_PORTS 0x16 /* Get number of TX ports */ 96 #define MCE_CMD_G_WAKESRC 0x17 /* Get wake source */ 97 #define MCE_CMD_UNKNOWN7 0x18 /* Unknown */ 98 #define MCE_CMD_UNKNOWN8 0x19 /* Unknown */ 99 #define MCE_CMD_UNKNOWN9 0x1b /* Unknown */ 100 #define MCE_CMD_DEVICE_RESET 0xaa /* Reset the hardware */ 101 #define MCE_RSP_CMD_INVALID 0xfe /* Invalid command issued */ 102 103 104 /* module parameters */ 105 #ifdef CONFIG_USB_DEBUG 106 static int debug = 1; 107 #else 108 static int debug; 109 #endif 110 111 /* general constants */ 112 #define SEND_FLAG_IN_PROGRESS 1 113 #define SEND_FLAG_COMPLETE 2 114 #define RECV_FLAG_IN_PROGRESS 3 115 #define RECV_FLAG_COMPLETE 4 116 117 #define MCEUSB_RX 1 118 #define MCEUSB_TX 2 119 120 #define VENDOR_PHILIPS 0x0471 121 #define VENDOR_SMK 0x0609 122 #define VENDOR_TATUNG 0x1460 123 #define VENDOR_GATEWAY 0x107b 124 #define VENDOR_SHUTTLE 0x1308 125 #define VENDOR_SHUTTLE2 0x051c 126 #define VENDOR_MITSUMI 0x03ee 127 #define VENDOR_TOPSEED 0x1784 128 #define VENDOR_RICAVISION 0x179d 129 #define VENDOR_ITRON 0x195d 130 #define VENDOR_FIC 0x1509 131 #define VENDOR_LG 0x043e 132 #define VENDOR_MICROSOFT 0x045e 133 #define VENDOR_FORMOSA 0x147a 134 #define VENDOR_FINTEK 0x1934 135 #define VENDOR_PINNACLE 0x2304 136 #define VENDOR_ECS 0x1019 137 #define VENDOR_WISTRON 0x0fb8 138 #define VENDOR_COMPRO 0x185b 139 #define VENDOR_NORTHSTAR 0x04eb 140 #define VENDOR_REALTEK 0x0bda 141 #define VENDOR_TIVO 0x105a 142 #define VENDOR_CONEXANT 0x0572 143 144 enum mceusb_model_type { 145 MCE_GEN2 = 0, /* Most boards */ 146 MCE_GEN1, 147 MCE_GEN3, 148 MCE_GEN2_TX_INV, 149 POLARIS_EVK, 150 CX_HYBRID_TV, 151 MULTIFUNCTION, 152 TIVO_KIT, 153 MCE_GEN2_NO_TX, 154 }; 155 156 struct mceusb_model { 157 u32 mce_gen1:1; 158 u32 mce_gen2:1; 159 u32 mce_gen3:1; 160 u32 tx_mask_normal:1; 161 u32 no_tx:1; 162 163 int ir_intfnum; 164 165 const char *rc_map; /* Allow specify a per-board map */ 166 const char *name; /* per-board name */ 167 }; 168 169 static const struct mceusb_model mceusb_model[] = { 170 [MCE_GEN1] = { 171 .mce_gen1 = 1, 172 .tx_mask_normal = 1, 173 }, 174 [MCE_GEN2] = { 175 .mce_gen2 = 1, 176 }, 177 [MCE_GEN2_NO_TX] = { 178 .mce_gen2 = 1, 179 .no_tx = 1, 180 }, 181 [MCE_GEN2_TX_INV] = { 182 .mce_gen2 = 1, 183 .tx_mask_normal = 1, 184 }, 185 [MCE_GEN3] = { 186 .mce_gen3 = 1, 187 .tx_mask_normal = 1, 188 }, 189 [POLARIS_EVK] = { 190 /* 191 * In fact, the EVK is shipped without 192 * remotes, but we should have something handy, 193 * to allow testing it 194 */ 195 .rc_map = RC_MAP_HAUPPAUGE, 196 .name = "Conexant Hybrid TV (cx231xx) MCE IR", 197 }, 198 [CX_HYBRID_TV] = { 199 .no_tx = 1, /* tx isn't wired up at all */ 200 .name = "Conexant Hybrid TV (cx231xx) MCE IR", 201 }, 202 [MULTIFUNCTION] = { 203 .mce_gen2 = 1, 204 .ir_intfnum = 2, 205 }, 206 [TIVO_KIT] = { 207 .mce_gen2 = 1, 208 .rc_map = RC_MAP_TIVO, 209 }, 210 }; 211 212 static struct usb_device_id mceusb_dev_table[] = { 213 /* Original Microsoft MCE IR Transceiver (often HP-branded) */ 214 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d), 215 .driver_info = MCE_GEN1 }, 216 /* Philips Infrared Transceiver - Sahara branded */ 217 { USB_DEVICE(VENDOR_PHILIPS, 0x0608) }, 218 /* Philips Infrared Transceiver - HP branded */ 219 { USB_DEVICE(VENDOR_PHILIPS, 0x060c), 220 .driver_info = MCE_GEN2_TX_INV }, 221 /* Philips SRM5100 */ 222 { USB_DEVICE(VENDOR_PHILIPS, 0x060d) }, 223 /* Philips Infrared Transceiver - Omaura */ 224 { USB_DEVICE(VENDOR_PHILIPS, 0x060f) }, 225 /* Philips Infrared Transceiver - Spinel plus */ 226 { USB_DEVICE(VENDOR_PHILIPS, 0x0613) }, 227 /* Philips eHome Infrared Transceiver */ 228 { USB_DEVICE(VENDOR_PHILIPS, 0x0815) }, 229 /* Philips/Spinel plus IR transceiver for ASUS */ 230 { USB_DEVICE(VENDOR_PHILIPS, 0x206c) }, 231 /* Philips/Spinel plus IR transceiver for ASUS */ 232 { USB_DEVICE(VENDOR_PHILIPS, 0x2088) }, 233 /* Philips IR transceiver (Dell branded) */ 234 { USB_DEVICE(VENDOR_PHILIPS, 0x2093) }, 235 /* Realtek MCE IR Receiver and card reader */ 236 { USB_DEVICE(VENDOR_REALTEK, 0x0161), 237 .driver_info = MULTIFUNCTION }, 238 /* SMK/Toshiba G83C0004D410 */ 239 { USB_DEVICE(VENDOR_SMK, 0x031d), 240 .driver_info = MCE_GEN2_TX_INV }, 241 /* SMK eHome Infrared Transceiver (Sony VAIO) */ 242 { USB_DEVICE(VENDOR_SMK, 0x0322), 243 .driver_info = MCE_GEN2_TX_INV }, 244 /* bundled with Hauppauge PVR-150 */ 245 { USB_DEVICE(VENDOR_SMK, 0x0334), 246 .driver_info = MCE_GEN2_TX_INV }, 247 /* SMK eHome Infrared Transceiver */ 248 { USB_DEVICE(VENDOR_SMK, 0x0338) }, 249 /* Tatung eHome Infrared Transceiver */ 250 { USB_DEVICE(VENDOR_TATUNG, 0x9150) }, 251 /* Shuttle eHome Infrared Transceiver */ 252 { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) }, 253 /* Shuttle eHome Infrared Transceiver */ 254 { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) }, 255 /* Gateway eHome Infrared Transceiver */ 256 { USB_DEVICE(VENDOR_GATEWAY, 0x3009) }, 257 /* Mitsumi */ 258 { USB_DEVICE(VENDOR_MITSUMI, 0x2501) }, 259 /* Topseed eHome Infrared Transceiver */ 260 { USB_DEVICE(VENDOR_TOPSEED, 0x0001), 261 .driver_info = MCE_GEN2_TX_INV }, 262 /* Topseed HP eHome Infrared Transceiver */ 263 { USB_DEVICE(VENDOR_TOPSEED, 0x0006), 264 .driver_info = MCE_GEN2_TX_INV }, 265 /* Topseed eHome Infrared Transceiver */ 266 { USB_DEVICE(VENDOR_TOPSEED, 0x0007), 267 .driver_info = MCE_GEN2_TX_INV }, 268 /* Topseed eHome Infrared Transceiver */ 269 { USB_DEVICE(VENDOR_TOPSEED, 0x0008), 270 .driver_info = MCE_GEN3 }, 271 /* Topseed eHome Infrared Transceiver */ 272 { USB_DEVICE(VENDOR_TOPSEED, 0x000a), 273 .driver_info = MCE_GEN2_TX_INV }, 274 /* Topseed eHome Infrared Transceiver */ 275 { USB_DEVICE(VENDOR_TOPSEED, 0x0011), 276 .driver_info = MCE_GEN3 }, 277 /* Ricavision internal Infrared Transceiver */ 278 { USB_DEVICE(VENDOR_RICAVISION, 0x0010) }, 279 /* Itron ione Libra Q-11 */ 280 { USB_DEVICE(VENDOR_ITRON, 0x7002) }, 281 /* FIC eHome Infrared Transceiver */ 282 { USB_DEVICE(VENDOR_FIC, 0x9242) }, 283 /* LG eHome Infrared Transceiver */ 284 { USB_DEVICE(VENDOR_LG, 0x9803) }, 285 /* Microsoft MCE Infrared Transceiver */ 286 { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) }, 287 /* Formosa eHome Infrared Transceiver */ 288 { USB_DEVICE(VENDOR_FORMOSA, 0xe015) }, 289 /* Formosa21 / eHome Infrared Receiver */ 290 { USB_DEVICE(VENDOR_FORMOSA, 0xe016) }, 291 /* Formosa aim / Trust MCE Infrared Receiver */ 292 { USB_DEVICE(VENDOR_FORMOSA, 0xe017), 293 .driver_info = MCE_GEN2_NO_TX }, 294 /* Formosa Industrial Computing / Beanbag Emulation Device */ 295 { USB_DEVICE(VENDOR_FORMOSA, 0xe018) }, 296 /* Formosa21 / eHome Infrared Receiver */ 297 { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) }, 298 /* Formosa Industrial Computing AIM IR605/A */ 299 { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) }, 300 /* Formosa Industrial Computing */ 301 { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) }, 302 /* Fintek eHome Infrared Transceiver (HP branded) */ 303 { USB_DEVICE(VENDOR_FINTEK, 0x5168) }, 304 /* Fintek eHome Infrared Transceiver */ 305 { USB_DEVICE(VENDOR_FINTEK, 0x0602) }, 306 /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */ 307 { USB_DEVICE(VENDOR_FINTEK, 0x0702) }, 308 /* Pinnacle Remote Kit */ 309 { USB_DEVICE(VENDOR_PINNACLE, 0x0225), 310 .driver_info = MCE_GEN3 }, 311 /* Elitegroup Computer Systems IR */ 312 { USB_DEVICE(VENDOR_ECS, 0x0f38) }, 313 /* Wistron Corp. eHome Infrared Receiver */ 314 { USB_DEVICE(VENDOR_WISTRON, 0x0002) }, 315 /* Compro K100 */ 316 { USB_DEVICE(VENDOR_COMPRO, 0x3020) }, 317 /* Compro K100 v2 */ 318 { USB_DEVICE(VENDOR_COMPRO, 0x3082) }, 319 /* Northstar Systems, Inc. eHome Infrared Transceiver */ 320 { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) }, 321 /* TiVo PC IR Receiver */ 322 { USB_DEVICE(VENDOR_TIVO, 0x2000), 323 .driver_info = TIVO_KIT }, 324 /* Conexant Hybrid TV "Shelby" Polaris SDK */ 325 { USB_DEVICE(VENDOR_CONEXANT, 0x58a1), 326 .driver_info = POLARIS_EVK }, 327 /* Conexant Hybrid TV RDU253S Polaris */ 328 { USB_DEVICE(VENDOR_CONEXANT, 0x58a5), 329 .driver_info = CX_HYBRID_TV }, 330 /* Terminating entry */ 331 { } 332 }; 333 334 /* data structure for each usb transceiver */ 335 struct mceusb_dev { 336 /* ir-core bits */ 337 struct rc_dev *rc; 338 339 /* optional features we can enable */ 340 bool carrier_report_enabled; 341 bool learning_enabled; 342 343 /* core device bits */ 344 struct device *dev; 345 346 /* usb */ 347 struct usb_device *usbdev; 348 struct urb *urb_in; 349 struct usb_endpoint_descriptor *usb_ep_in; 350 struct usb_endpoint_descriptor *usb_ep_out; 351 352 /* buffers and dma */ 353 unsigned char *buf_in; 354 unsigned int len_in; 355 dma_addr_t dma_in; 356 dma_addr_t dma_out; 357 358 enum { 359 CMD_HEADER = 0, 360 SUBCMD, 361 CMD_DATA, 362 PARSE_IRDATA, 363 } parser_state; 364 365 u8 cmd, rem; /* Remaining IR data bytes in packet */ 366 367 struct { 368 u32 connected:1; 369 u32 tx_mask_normal:1; 370 u32 microsoft_gen1:1; 371 u32 no_tx:1; 372 } flags; 373 374 /* transmit support */ 375 int send_flags; 376 u32 carrier; 377 unsigned char tx_mask; 378 379 char name[128]; 380 char phys[64]; 381 enum mceusb_model_type model; 382 }; 383 384 /* 385 * MCE Device Command Strings 386 * Device command responses vary from device to device... 387 * - DEVICE_RESET resets the hardware to its default state 388 * - GET_REVISION fetches the hardware/software revision, common 389 * replies are ff 0b 45 ff 1b 08 and ff 0b 50 ff 1b 42 390 * - GET_CARRIER_FREQ gets the carrier mode and frequency of the 391 * device, with replies in the form of 9f 06 MM FF, where MM is 0-3, 392 * meaning clk of 10000000, 2500000, 625000 or 156250, and FF is 393 * ((clk / frequency) - 1) 394 * - GET_RX_TIMEOUT fetches the receiver timeout in units of 50us, 395 * response in the form of 9f 0c msb lsb 396 * - GET_TX_BITMASK fetches the transmitter bitmask, replies in 397 * the form of 9f 08 bm, where bm is the bitmask 398 * - GET_RX_SENSOR fetches the RX sensor setting -- long-range 399 * general use one or short-range learning one, in the form of 400 * 9f 14 ss, where ss is either 01 for long-range or 02 for short 401 * - SET_CARRIER_FREQ sets a new carrier mode and frequency 402 * - SET_TX_BITMASK sets the transmitter bitmask 403 * - SET_RX_TIMEOUT sets the receiver timeout 404 * - SET_RX_SENSOR sets which receiver sensor to use 405 */ 406 static char DEVICE_RESET[] = {MCE_COMMAND_NULL, MCE_HW_CMD_HEADER, 407 MCE_CMD_DEVICE_RESET}; 408 static char GET_REVISION[] = {MCE_HW_CMD_HEADER, MCE_CMD_G_REVISION}; 409 static char GET_UNKNOWN[] = {MCE_HW_CMD_HEADER, MCE_CMD_UNKNOWN7}; 410 static char GET_UNKNOWN2[] = {MCE_COMMAND_HEADER, MCE_CMD_UNKNOWN2}; 411 static char GET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER, MCE_CMD_G_CARRIER}; 412 static char GET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TIMEOUT}; 413 static char GET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TXMASK}; 414 static char GET_RX_SENSOR[] = {MCE_COMMAND_HEADER, MCE_CMD_G_RXSENSOR}; 415 /* sub in desired values in lower byte or bytes for full command */ 416 /* FIXME: make use of these for transmit. 417 static char SET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER, 418 MCE_CMD_S_CARRIER, 0x00, 0x00}; 419 static char SET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_S_TXMASK, 0x00}; 420 static char SET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER, 421 MCE_CMD_S_TIMEOUT, 0x00, 0x00}; 422 static char SET_RX_SENSOR[] = {MCE_COMMAND_HEADER, 423 MCE_CMD_S_RXSENSOR, 0x00}; 424 */ 425 426 static int mceusb_cmdsize(u8 cmd, u8 subcmd) 427 { 428 int datasize = 0; 429 430 switch (cmd) { 431 case MCE_COMMAND_NULL: 432 if (subcmd == MCE_HW_CMD_HEADER) 433 datasize = 1; 434 break; 435 case MCE_HW_CMD_HEADER: 436 switch (subcmd) { 437 case MCE_CMD_G_REVISION: 438 datasize = 2; 439 break; 440 } 441 case MCE_COMMAND_HEADER: 442 switch (subcmd) { 443 case MCE_CMD_UNKNOWN: 444 case MCE_CMD_S_CARRIER: 445 case MCE_CMD_S_TIMEOUT: 446 case MCE_RSP_PULSE_COUNT: 447 datasize = 2; 448 break; 449 case MCE_CMD_SIG_END: 450 case MCE_CMD_S_TXMASK: 451 case MCE_CMD_S_RXSENSOR: 452 datasize = 1; 453 break; 454 } 455 } 456 return datasize; 457 } 458 459 static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf, 460 int offset, int len, bool out) 461 { 462 char codes[USB_BUFLEN * 3 + 1]; 463 char inout[9]; 464 u8 cmd, subcmd, data1, data2; 465 struct device *dev = ir->dev; 466 int i, start, skip = 0; 467 468 if (!debug) 469 return; 470 471 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ 472 if (ir->flags.microsoft_gen1 && !out && !offset) 473 skip = 2; 474 475 if (len <= skip) 476 return; 477 478 for (i = 0; i < len && i < USB_BUFLEN; i++) 479 snprintf(codes + i * 3, 4, "%02x ", buf[i + offset] & 0xff); 480 481 dev_info(dev, "%sx data: %s(length=%d)\n", 482 (out ? "t" : "r"), codes, len); 483 484 if (out) 485 strcpy(inout, "Request\0"); 486 else 487 strcpy(inout, "Got\0"); 488 489 start = offset + skip; 490 cmd = buf[start] & 0xff; 491 subcmd = buf[start + 1] & 0xff; 492 data1 = buf[start + 2] & 0xff; 493 data2 = buf[start + 3] & 0xff; 494 495 switch (cmd) { 496 case MCE_COMMAND_NULL: 497 if ((subcmd == MCE_HW_CMD_HEADER) && 498 (data1 == MCE_CMD_DEVICE_RESET)) 499 dev_info(dev, "Device reset requested\n"); 500 else 501 dev_info(dev, "Unknown command 0x%02x 0x%02x\n", 502 cmd, subcmd); 503 break; 504 case MCE_HW_CMD_HEADER: 505 switch (subcmd) { 506 case MCE_CMD_G_REVISION: 507 if (len == 2) 508 dev_info(dev, "Get hw/sw rev?\n"); 509 else 510 dev_info(dev, "hw/sw rev 0x%02x 0x%02x " 511 "0x%02x 0x%02x\n", data1, data2, 512 buf[start + 4], buf[start + 5]); 513 break; 514 case MCE_CMD_DEVICE_RESET: 515 dev_info(dev, "Device reset requested\n"); 516 break; 517 case MCE_RSP_CMD_INVALID: 518 dev_info(dev, "Previous command not supported\n"); 519 break; 520 case MCE_CMD_UNKNOWN7: 521 case MCE_CMD_UNKNOWN9: 522 default: 523 dev_info(dev, "Unknown command 0x%02x 0x%02x\n", 524 cmd, subcmd); 525 break; 526 } 527 break; 528 case MCE_COMMAND_HEADER: 529 switch (subcmd) { 530 case MCE_CMD_SIG_END: 531 dev_info(dev, "End of signal\n"); 532 break; 533 case MCE_CMD_PING: 534 dev_info(dev, "Ping\n"); 535 break; 536 case MCE_CMD_UNKNOWN: 537 dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n", 538 data1, data2); 539 break; 540 case MCE_CMD_S_CARRIER: 541 dev_info(dev, "%s carrier mode and freq of " 542 "0x%02x 0x%02x\n", inout, data1, data2); 543 break; 544 case MCE_CMD_G_CARRIER: 545 dev_info(dev, "Get carrier mode and freq\n"); 546 break; 547 case MCE_CMD_S_TXMASK: 548 dev_info(dev, "%s transmit blaster mask of 0x%02x\n", 549 inout, data1); 550 break; 551 case MCE_CMD_S_TIMEOUT: 552 /* value is in units of 50us, so x*50/100 or x/2 ms */ 553 dev_info(dev, "%s receive timeout of %d ms\n", 554 inout, ((data1 << 8) | data2) / 2); 555 break; 556 case MCE_CMD_G_TIMEOUT: 557 dev_info(dev, "Get receive timeout\n"); 558 break; 559 case MCE_CMD_G_TXMASK: 560 dev_info(dev, "Get transmit blaster mask\n"); 561 break; 562 case MCE_CMD_S_RXSENSOR: 563 dev_info(dev, "%s %s-range receive sensor in use\n", 564 inout, data1 == 0x02 ? "short" : "long"); 565 break; 566 case MCE_CMD_G_RXSENSOR: 567 /* aka MCE_RSP_PULSE_COUNT */ 568 if (out) 569 dev_info(dev, "Get receive sensor\n"); 570 else if (ir->learning_enabled) 571 dev_info(dev, "RX pulse count: %d\n", 572 ((data1 << 8) | data2)); 573 break; 574 case MCE_RSP_CMD_INVALID: 575 dev_info(dev, "Error! Hardware is likely wedged...\n"); 576 break; 577 case MCE_CMD_UNKNOWN2: 578 case MCE_CMD_UNKNOWN3: 579 case MCE_CMD_UNKNOWN5: 580 default: 581 dev_info(dev, "Unknown command 0x%02x 0x%02x\n", 582 cmd, subcmd); 583 break; 584 } 585 break; 586 default: 587 break; 588 } 589 590 if (cmd == MCE_IRDATA_TRAILER) 591 dev_info(dev, "End of raw IR data\n"); 592 else if ((cmd != MCE_COMMAND_HEADER) && 593 ((cmd & MCE_COMMAND_MASK) == MCE_COMMAND_IRDATA)) 594 dev_info(dev, "Raw IR data, %d pulse/space samples\n", ir->rem); 595 } 596 597 static void mce_async_callback(struct urb *urb, struct pt_regs *regs) 598 { 599 struct mceusb_dev *ir; 600 int len; 601 602 if (!urb) 603 return; 604 605 ir = urb->context; 606 if (ir) { 607 len = urb->actual_length; 608 609 dev_dbg(ir->dev, "callback called (status=%d len=%d)\n", 610 urb->status, len); 611 612 mceusb_dev_printdata(ir, urb->transfer_buffer, 0, len, true); 613 } 614 615 } 616 617 /* request incoming or send outgoing usb packet - used to initialize remote */ 618 static void mce_request_packet(struct mceusb_dev *ir, unsigned char *data, 619 int size, int urb_type) 620 { 621 int res, pipe; 622 struct urb *async_urb; 623 struct device *dev = ir->dev; 624 unsigned char *async_buf; 625 626 if (urb_type == MCEUSB_TX) { 627 async_urb = usb_alloc_urb(0, GFP_KERNEL); 628 if (unlikely(!async_urb)) { 629 dev_err(dev, "Error, couldn't allocate urb!\n"); 630 return; 631 } 632 633 async_buf = kzalloc(size, GFP_KERNEL); 634 if (!async_buf) { 635 dev_err(dev, "Error, couldn't allocate buf!\n"); 636 usb_free_urb(async_urb); 637 return; 638 } 639 640 /* outbound data */ 641 pipe = usb_sndintpipe(ir->usbdev, 642 ir->usb_ep_out->bEndpointAddress); 643 usb_fill_int_urb(async_urb, ir->usbdev, pipe, 644 async_buf, size, (usb_complete_t)mce_async_callback, 645 ir, ir->usb_ep_out->bInterval); 646 memcpy(async_buf, data, size); 647 648 } else if (urb_type == MCEUSB_RX) { 649 /* standard request */ 650 async_urb = ir->urb_in; 651 ir->send_flags = RECV_FLAG_IN_PROGRESS; 652 653 } else { 654 dev_err(dev, "Error! Unknown urb type %d\n", urb_type); 655 return; 656 } 657 658 dev_dbg(dev, "receive request called (size=%#x)\n", size); 659 660 async_urb->transfer_buffer_length = size; 661 async_urb->dev = ir->usbdev; 662 663 res = usb_submit_urb(async_urb, GFP_ATOMIC); 664 if (res) { 665 dev_dbg(dev, "receive request FAILED! (res=%d)\n", res); 666 return; 667 } 668 dev_dbg(dev, "receive request complete (res=%d)\n", res); 669 } 670 671 static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size) 672 { 673 mce_request_packet(ir, data, size, MCEUSB_TX); 674 } 675 676 static void mce_sync_in(struct mceusb_dev *ir, unsigned char *data, int size) 677 { 678 mce_request_packet(ir, data, size, MCEUSB_RX); 679 } 680 681 /* Send data out the IR blaster port(s) */ 682 static int mceusb_tx_ir(struct rc_dev *dev, int *txbuf, u32 n) 683 { 684 struct mceusb_dev *ir = dev->priv; 685 int i, ret = 0; 686 int count, cmdcount = 0; 687 unsigned char *cmdbuf; /* MCE command buffer */ 688 long signal_duration = 0; /* Singnal length in us */ 689 struct timeval start_time, end_time; 690 691 do_gettimeofday(&start_time); 692 693 count = n / sizeof(int); 694 695 cmdbuf = kzalloc(sizeof(int) * MCE_CMDBUF_SIZE, GFP_KERNEL); 696 if (!cmdbuf) 697 return -ENOMEM; 698 699 /* MCE tx init header */ 700 cmdbuf[cmdcount++] = MCE_COMMAND_HEADER; 701 cmdbuf[cmdcount++] = MCE_CMD_S_TXMASK; 702 cmdbuf[cmdcount++] = ir->tx_mask; 703 704 /* Generate mce packet data */ 705 for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) { 706 signal_duration += txbuf[i]; 707 txbuf[i] = txbuf[i] / MCE_TIME_UNIT; 708 709 do { /* loop to support long pulses/spaces > 127*50us=6.35ms */ 710 711 /* Insert mce packet header every 4th entry */ 712 if ((cmdcount < MCE_CMDBUF_SIZE) && 713 (cmdcount - MCE_TX_HEADER_LENGTH) % 714 MCE_CODE_LENGTH == 0) 715 cmdbuf[cmdcount++] = MCE_IRDATA_HEADER; 716 717 /* Insert mce packet data */ 718 if (cmdcount < MCE_CMDBUF_SIZE) 719 cmdbuf[cmdcount++] = 720 (txbuf[i] < MCE_PULSE_BIT ? 721 txbuf[i] : MCE_MAX_PULSE_LENGTH) | 722 (i & 1 ? 0x00 : MCE_PULSE_BIT); 723 else { 724 ret = -EINVAL; 725 goto out; 726 } 727 728 } while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) && 729 (txbuf[i] -= MCE_MAX_PULSE_LENGTH)); 730 } 731 732 /* Fix packet length in last header */ 733 cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] = 734 MCE_COMMAND_IRDATA + (cmdcount - MCE_TX_HEADER_LENGTH) % 735 MCE_CODE_LENGTH - 1; 736 737 /* Check if we have room for the empty packet at the end */ 738 if (cmdcount >= MCE_CMDBUF_SIZE) { 739 ret = -EINVAL; 740 goto out; 741 } 742 743 /* All mce commands end with an empty packet (0x80) */ 744 cmdbuf[cmdcount++] = MCE_IRDATA_TRAILER; 745 746 /* Transmit the command to the mce device */ 747 mce_async_out(ir, cmdbuf, cmdcount); 748 749 /* 750 * The lircd gap calculation expects the write function to 751 * wait the time it takes for the ircommand to be sent before 752 * it returns. 753 */ 754 do_gettimeofday(&end_time); 755 signal_duration -= (end_time.tv_usec - start_time.tv_usec) + 756 (end_time.tv_sec - start_time.tv_sec) * 1000000; 757 758 /* delay with the closest number of ticks */ 759 set_current_state(TASK_INTERRUPTIBLE); 760 schedule_timeout(usecs_to_jiffies(signal_duration)); 761 762 out: 763 kfree(cmdbuf); 764 return ret ? ret : n; 765 } 766 767 /* Sets active IR outputs -- mce devices typically have two */ 768 static int mceusb_set_tx_mask(struct rc_dev *dev, u32 mask) 769 { 770 struct mceusb_dev *ir = dev->priv; 771 772 if (ir->flags.tx_mask_normal) 773 ir->tx_mask = mask; 774 else 775 ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ? 776 mask ^ MCE_DEFAULT_TX_MASK : mask) << 1; 777 778 return 0; 779 } 780 781 /* Sets the send carrier frequency and mode */ 782 static int mceusb_set_tx_carrier(struct rc_dev *dev, u32 carrier) 783 { 784 struct mceusb_dev *ir = dev->priv; 785 int clk = 10000000; 786 int prescaler = 0, divisor = 0; 787 unsigned char cmdbuf[4] = { MCE_COMMAND_HEADER, 788 MCE_CMD_S_CARRIER, 0x00, 0x00 }; 789 790 /* Carrier has changed */ 791 if (ir->carrier != carrier) { 792 793 if (carrier == 0) { 794 ir->carrier = carrier; 795 cmdbuf[2] = MCE_CMD_SIG_END; 796 cmdbuf[3] = MCE_IRDATA_TRAILER; 797 dev_dbg(ir->dev, "%s: disabling carrier " 798 "modulation\n", __func__); 799 mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); 800 return carrier; 801 } 802 803 for (prescaler = 0; prescaler < 4; ++prescaler) { 804 divisor = (clk >> (2 * prescaler)) / carrier; 805 if (divisor <= 0xff) { 806 ir->carrier = carrier; 807 cmdbuf[2] = prescaler; 808 cmdbuf[3] = divisor; 809 dev_dbg(ir->dev, "%s: requesting %u HZ " 810 "carrier\n", __func__, carrier); 811 812 /* Transmit new carrier to mce device */ 813 mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); 814 return carrier; 815 } 816 } 817 818 return -EINVAL; 819 820 } 821 822 return carrier; 823 } 824 825 /* 826 * We don't do anything but print debug spew for many of the command bits 827 * we receive from the hardware, but some of them are useful information 828 * we want to store so that we can use them. 829 */ 830 static void mceusb_handle_command(struct mceusb_dev *ir, int index) 831 { 832 u8 hi = ir->buf_in[index + 1] & 0xff; 833 u8 lo = ir->buf_in[index + 2] & 0xff; 834 835 switch (ir->buf_in[index]) { 836 /* 2-byte return value commands */ 837 case MCE_CMD_S_TIMEOUT: 838 ir->rc->timeout = US_TO_NS((hi << 8 | lo) / 2); 839 break; 840 841 /* 1-byte return value commands */ 842 case MCE_CMD_S_TXMASK: 843 ir->tx_mask = hi; 844 break; 845 case MCE_CMD_S_RXSENSOR: 846 ir->learning_enabled = (hi == 0x02); 847 break; 848 default: 849 break; 850 } 851 } 852 853 static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len) 854 { 855 DEFINE_IR_RAW_EVENT(rawir); 856 int i = 0; 857 858 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ 859 if (ir->flags.microsoft_gen1) 860 i = 2; 861 862 /* if there's no data, just return now */ 863 if (buf_len <= i) 864 return; 865 866 for (; i < buf_len; i++) { 867 switch (ir->parser_state) { 868 case SUBCMD: 869 ir->rem = mceusb_cmdsize(ir->cmd, ir->buf_in[i]); 870 mceusb_dev_printdata(ir, ir->buf_in, i - 1, 871 ir->rem + 2, false); 872 mceusb_handle_command(ir, i); 873 ir->parser_state = CMD_DATA; 874 break; 875 case PARSE_IRDATA: 876 ir->rem--; 877 init_ir_raw_event(&rawir); 878 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0); 879 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK) 880 * US_TO_NS(MCE_TIME_UNIT); 881 882 dev_dbg(ir->dev, "Storing %s with duration %d\n", 883 rawir.pulse ? "pulse" : "space", 884 rawir.duration); 885 886 ir_raw_event_store_with_filter(ir->rc, &rawir); 887 break; 888 case CMD_DATA: 889 ir->rem--; 890 break; 891 case CMD_HEADER: 892 /* decode mce packets of the form (84),AA,BB,CC,DD */ 893 /* IR data packets can span USB messages - rem */ 894 ir->cmd = ir->buf_in[i]; 895 if ((ir->cmd == MCE_COMMAND_HEADER) || 896 ((ir->cmd & MCE_COMMAND_MASK) != 897 MCE_COMMAND_IRDATA)) { 898 ir->parser_state = SUBCMD; 899 continue; 900 } 901 ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK); 902 mceusb_dev_printdata(ir, ir->buf_in, 903 i, ir->rem + 1, false); 904 if (ir->rem) 905 ir->parser_state = PARSE_IRDATA; 906 else 907 ir_raw_event_reset(ir->rc); 908 break; 909 } 910 911 if (ir->parser_state != CMD_HEADER && !ir->rem) 912 ir->parser_state = CMD_HEADER; 913 } 914 dev_dbg(ir->dev, "processed IR data, calling ir_raw_event_handle\n"); 915 ir_raw_event_handle(ir->rc); 916 } 917 918 static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs) 919 { 920 struct mceusb_dev *ir; 921 int buf_len; 922 923 if (!urb) 924 return; 925 926 ir = urb->context; 927 if (!ir) { 928 usb_unlink_urb(urb); 929 return; 930 } 931 932 buf_len = urb->actual_length; 933 934 if (ir->send_flags == RECV_FLAG_IN_PROGRESS) { 935 ir->send_flags = SEND_FLAG_COMPLETE; 936 dev_dbg(ir->dev, "setup answer received %d bytes\n", 937 buf_len); 938 } 939 940 switch (urb->status) { 941 /* success */ 942 case 0: 943 mceusb_process_ir_data(ir, buf_len); 944 break; 945 946 case -ECONNRESET: 947 case -ENOENT: 948 case -ESHUTDOWN: 949 usb_unlink_urb(urb); 950 return; 951 952 case -EPIPE: 953 default: 954 dev_dbg(ir->dev, "Error: urb status = %d\n", urb->status); 955 break; 956 } 957 958 usb_submit_urb(urb, GFP_ATOMIC); 959 } 960 961 static void mceusb_gen1_init(struct mceusb_dev *ir) 962 { 963 int ret; 964 int maxp = ir->len_in; 965 struct device *dev = ir->dev; 966 char *data; 967 968 data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL); 969 if (!data) { 970 dev_err(dev, "%s: memory allocation failed!\n", __func__); 971 return; 972 } 973 974 /* 975 * This is a strange one. Windows issues a set address to the device 976 * on the receive control pipe and expect a certain value pair back 977 */ 978 ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0), 979 USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0, 980 data, USB_CTRL_MSG_SZ, HZ * 3); 981 dev_dbg(dev, "%s - ret = %d\n", __func__, ret); 982 dev_dbg(dev, "%s - data[0] = %d, data[1] = %d\n", 983 __func__, data[0], data[1]); 984 985 /* set feature: bit rate 38400 bps */ 986 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 987 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR, 988 0xc04e, 0x0000, NULL, 0, HZ * 3); 989 990 dev_dbg(dev, "%s - ret = %d\n", __func__, ret); 991 992 /* bRequest 4: set char length to 8 bits */ 993 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 994 4, USB_TYPE_VENDOR, 995 0x0808, 0x0000, NULL, 0, HZ * 3); 996 dev_dbg(dev, "%s - retB = %d\n", __func__, ret); 997 998 /* bRequest 2: set handshaking to use DTR/DSR */ 999 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 1000 2, USB_TYPE_VENDOR, 1001 0x0000, 0x0100, NULL, 0, HZ * 3); 1002 dev_dbg(dev, "%s - retC = %d\n", __func__, ret); 1003 1004 /* device reset */ 1005 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET)); 1006 mce_sync_in(ir, NULL, maxp); 1007 1008 /* get hw/sw revision? */ 1009 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION)); 1010 mce_sync_in(ir, NULL, maxp); 1011 1012 kfree(data); 1013 }; 1014 1015 static void mceusb_gen2_init(struct mceusb_dev *ir) 1016 { 1017 int maxp = ir->len_in; 1018 1019 /* device reset */ 1020 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET)); 1021 mce_sync_in(ir, NULL, maxp); 1022 1023 /* get hw/sw revision? */ 1024 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION)); 1025 mce_sync_in(ir, NULL, maxp); 1026 1027 /* unknown what the next two actually return... */ 1028 mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN)); 1029 mce_sync_in(ir, NULL, maxp); 1030 mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2)); 1031 mce_sync_in(ir, NULL, maxp); 1032 } 1033 1034 static void mceusb_get_parameters(struct mceusb_dev *ir) 1035 { 1036 int maxp = ir->len_in; 1037 1038 /* get the carrier and frequency */ 1039 mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ)); 1040 mce_sync_in(ir, NULL, maxp); 1041 1042 if (!ir->flags.no_tx) { 1043 /* get the transmitter bitmask */ 1044 mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK)); 1045 mce_sync_in(ir, NULL, maxp); 1046 } 1047 1048 /* get receiver timeout value */ 1049 mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT)); 1050 mce_sync_in(ir, NULL, maxp); 1051 1052 /* get receiver sensor setting */ 1053 mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR)); 1054 mce_sync_in(ir, NULL, maxp); 1055 } 1056 1057 static struct rc_dev *mceusb_init_rc_dev(struct mceusb_dev *ir) 1058 { 1059 struct device *dev = ir->dev; 1060 struct rc_dev *rc; 1061 int ret; 1062 1063 rc = rc_allocate_device(); 1064 if (!rc) { 1065 dev_err(dev, "remote dev allocation failed\n"); 1066 goto out; 1067 } 1068 1069 snprintf(ir->name, sizeof(ir->name), "%s (%04x:%04x)", 1070 mceusb_model[ir->model].name ? 1071 mceusb_model[ir->model].name : 1072 "Media Center Ed. eHome Infrared Remote Transceiver", 1073 le16_to_cpu(ir->usbdev->descriptor.idVendor), 1074 le16_to_cpu(ir->usbdev->descriptor.idProduct)); 1075 1076 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys)); 1077 1078 rc->input_name = ir->name; 1079 rc->input_phys = ir->phys; 1080 usb_to_input_id(ir->usbdev, &rc->input_id); 1081 rc->dev.parent = dev; 1082 rc->priv = ir; 1083 rc->driver_type = RC_DRIVER_IR_RAW; 1084 rc->allowed_protos = RC_TYPE_ALL; 1085 rc->timeout = US_TO_NS(1000); 1086 if (!ir->flags.no_tx) { 1087 rc->s_tx_mask = mceusb_set_tx_mask; 1088 rc->s_tx_carrier = mceusb_set_tx_carrier; 1089 rc->tx_ir = mceusb_tx_ir; 1090 } 1091 rc->driver_name = DRIVER_NAME; 1092 rc->map_name = mceusb_model[ir->model].rc_map ? 1093 mceusb_model[ir->model].rc_map : RC_MAP_RC6_MCE; 1094 1095 ret = rc_register_device(rc); 1096 if (ret < 0) { 1097 dev_err(dev, "remote dev registration failed\n"); 1098 goto out; 1099 } 1100 1101 return rc; 1102 1103 out: 1104 rc_free_device(rc); 1105 return NULL; 1106 } 1107 1108 static int __devinit mceusb_dev_probe(struct usb_interface *intf, 1109 const struct usb_device_id *id) 1110 { 1111 struct usb_device *dev = interface_to_usbdev(intf); 1112 struct usb_host_interface *idesc; 1113 struct usb_endpoint_descriptor *ep = NULL; 1114 struct usb_endpoint_descriptor *ep_in = NULL; 1115 struct usb_endpoint_descriptor *ep_out = NULL; 1116 struct mceusb_dev *ir = NULL; 1117 int pipe, maxp, i; 1118 char buf[63], name[128] = ""; 1119 enum mceusb_model_type model = id->driver_info; 1120 bool is_gen3; 1121 bool is_microsoft_gen1; 1122 bool tx_mask_normal; 1123 int ir_intfnum; 1124 1125 dev_dbg(&intf->dev, "%s called\n", __func__); 1126 1127 idesc = intf->cur_altsetting; 1128 1129 is_gen3 = mceusb_model[model].mce_gen3; 1130 is_microsoft_gen1 = mceusb_model[model].mce_gen1; 1131 tx_mask_normal = mceusb_model[model].tx_mask_normal; 1132 ir_intfnum = mceusb_model[model].ir_intfnum; 1133 1134 /* There are multi-function devices with non-IR interfaces */ 1135 if (idesc->desc.bInterfaceNumber != ir_intfnum) 1136 return -ENODEV; 1137 1138 /* step through the endpoints to find first bulk in and out endpoint */ 1139 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) { 1140 ep = &idesc->endpoint[i].desc; 1141 1142 if ((ep_in == NULL) 1143 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 1144 == USB_DIR_IN) 1145 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1146 == USB_ENDPOINT_XFER_BULK) 1147 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1148 == USB_ENDPOINT_XFER_INT))) { 1149 1150 ep_in = ep; 1151 ep_in->bmAttributes = USB_ENDPOINT_XFER_INT; 1152 ep_in->bInterval = 1; 1153 dev_dbg(&intf->dev, "acceptable inbound endpoint " 1154 "found\n"); 1155 } 1156 1157 if ((ep_out == NULL) 1158 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 1159 == USB_DIR_OUT) 1160 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1161 == USB_ENDPOINT_XFER_BULK) 1162 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1163 == USB_ENDPOINT_XFER_INT))) { 1164 1165 ep_out = ep; 1166 ep_out->bmAttributes = USB_ENDPOINT_XFER_INT; 1167 ep_out->bInterval = 1; 1168 dev_dbg(&intf->dev, "acceptable outbound endpoint " 1169 "found\n"); 1170 } 1171 } 1172 if (ep_in == NULL) { 1173 dev_dbg(&intf->dev, "inbound and/or endpoint not found\n"); 1174 return -ENODEV; 1175 } 1176 1177 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress); 1178 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 1179 1180 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL); 1181 if (!ir) 1182 goto mem_alloc_fail; 1183 1184 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in); 1185 if (!ir->buf_in) 1186 goto buf_in_alloc_fail; 1187 1188 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL); 1189 if (!ir->urb_in) 1190 goto urb_in_alloc_fail; 1191 1192 ir->usbdev = dev; 1193 ir->dev = &intf->dev; 1194 ir->len_in = maxp; 1195 ir->flags.microsoft_gen1 = is_microsoft_gen1; 1196 ir->flags.tx_mask_normal = tx_mask_normal; 1197 ir->flags.no_tx = mceusb_model[model].no_tx; 1198 ir->model = model; 1199 1200 /* Saving usb interface data for use by the transmitter routine */ 1201 ir->usb_ep_in = ep_in; 1202 ir->usb_ep_out = ep_out; 1203 1204 if (dev->descriptor.iManufacturer 1205 && usb_string(dev, dev->descriptor.iManufacturer, 1206 buf, sizeof(buf)) > 0) 1207 strlcpy(name, buf, sizeof(name)); 1208 if (dev->descriptor.iProduct 1209 && usb_string(dev, dev->descriptor.iProduct, 1210 buf, sizeof(buf)) > 0) 1211 snprintf(name + strlen(name), sizeof(name) - strlen(name), 1212 " %s", buf); 1213 1214 ir->rc = mceusb_init_rc_dev(ir); 1215 if (!ir->rc) 1216 goto rc_dev_fail; 1217 1218 /* flush buffers on the device */ 1219 mce_sync_in(ir, NULL, maxp); 1220 mce_sync_in(ir, NULL, maxp); 1221 1222 /* wire up inbound data handler */ 1223 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, 1224 maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval); 1225 ir->urb_in->transfer_dma = ir->dma_in; 1226 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 1227 1228 /* initialize device */ 1229 if (ir->flags.microsoft_gen1) 1230 mceusb_gen1_init(ir); 1231 else if (!is_gen3) 1232 mceusb_gen2_init(ir); 1233 1234 mceusb_get_parameters(ir); 1235 1236 if (!ir->flags.no_tx) 1237 mceusb_set_tx_mask(ir->rc, MCE_DEFAULT_TX_MASK); 1238 1239 usb_set_intfdata(intf, ir); 1240 1241 dev_info(&intf->dev, "Registered %s on usb%d:%d\n", name, 1242 dev->bus->busnum, dev->devnum); 1243 1244 return 0; 1245 1246 /* Error-handling path */ 1247 rc_dev_fail: 1248 usb_free_urb(ir->urb_in); 1249 urb_in_alloc_fail: 1250 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in); 1251 buf_in_alloc_fail: 1252 kfree(ir); 1253 mem_alloc_fail: 1254 dev_err(&intf->dev, "%s: device setup failed!\n", __func__); 1255 1256 return -ENOMEM; 1257 } 1258 1259 1260 static void __devexit mceusb_dev_disconnect(struct usb_interface *intf) 1261 { 1262 struct usb_device *dev = interface_to_usbdev(intf); 1263 struct mceusb_dev *ir = usb_get_intfdata(intf); 1264 1265 usb_set_intfdata(intf, NULL); 1266 1267 if (!ir) 1268 return; 1269 1270 ir->usbdev = NULL; 1271 rc_unregister_device(ir->rc); 1272 usb_kill_urb(ir->urb_in); 1273 usb_free_urb(ir->urb_in); 1274 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in); 1275 1276 kfree(ir); 1277 } 1278 1279 static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message) 1280 { 1281 struct mceusb_dev *ir = usb_get_intfdata(intf); 1282 dev_info(ir->dev, "suspend\n"); 1283 usb_kill_urb(ir->urb_in); 1284 return 0; 1285 } 1286 1287 static int mceusb_dev_resume(struct usb_interface *intf) 1288 { 1289 struct mceusb_dev *ir = usb_get_intfdata(intf); 1290 dev_info(ir->dev, "resume\n"); 1291 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC)) 1292 return -EIO; 1293 return 0; 1294 } 1295 1296 static struct usb_driver mceusb_dev_driver = { 1297 .name = DRIVER_NAME, 1298 .probe = mceusb_dev_probe, 1299 .disconnect = mceusb_dev_disconnect, 1300 .suspend = mceusb_dev_suspend, 1301 .resume = mceusb_dev_resume, 1302 .reset_resume = mceusb_dev_resume, 1303 .id_table = mceusb_dev_table 1304 }; 1305 1306 static int __init mceusb_dev_init(void) 1307 { 1308 int ret; 1309 1310 ret = usb_register(&mceusb_dev_driver); 1311 if (ret < 0) 1312 printk(KERN_ERR DRIVER_NAME 1313 ": usb register failed, result = %d\n", ret); 1314 1315 return ret; 1316 } 1317 1318 static void __exit mceusb_dev_exit(void) 1319 { 1320 usb_deregister(&mceusb_dev_driver); 1321 } 1322 1323 module_init(mceusb_dev_init); 1324 module_exit(mceusb_dev_exit); 1325 1326 MODULE_DESCRIPTION(DRIVER_DESC); 1327 MODULE_AUTHOR(DRIVER_AUTHOR); 1328 MODULE_LICENSE("GPL"); 1329 MODULE_DEVICE_TABLE(usb, mceusb_dev_table); 1330 1331 module_param(debug, bool, S_IRUGO | S_IWUSR); 1332 MODULE_PARM_DESC(debug, "Debug enabled or not"); 1333