1 /* 2 * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers 3 * 4 * Copyright (c) 2010-2011, 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 * Updated in July of 2011 with the aid of Microsoft's official 19 * remote/transceiver requirements and specification document, found at 20 * download.microsoft.com, title 21 * Windows-Media-Center-RC-IR-Collection-Green-Button-Specification-03-08-2011-V2.pdf 22 * 23 * 24 * This program is free software; you can redistribute it and/or modify 25 * it under the terms of the GNU General Public License as published by 26 * the Free Software Foundation; either version 2 of the License, or 27 * (at your option) any later version. 28 * 29 * This program is distributed in the hope that it will be useful, 30 * but WITHOUT ANY WARRANTY; without even the implied warranty of 31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 32 * GNU General Public License for more details. 33 * 34 * You should have received a copy of the GNU General Public License 35 * along with this program; if not, write to the Free Software 36 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 37 * 38 */ 39 40 #include <linux/device.h> 41 #include <linux/module.h> 42 #include <linux/slab.h> 43 #include <linux/usb.h> 44 #include <linux/usb/input.h> 45 #include <linux/pm_wakeup.h> 46 #include <media/rc-core.h> 47 48 #define DRIVER_VERSION "1.92" 49 #define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>" 50 #define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \ 51 "device driver" 52 #define DRIVER_NAME "mceusb" 53 54 #define USB_BUFLEN 32 /* USB reception buffer length */ 55 #define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */ 56 #define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */ 57 58 /* MCE constants */ 59 #define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */ 60 #define MCE_TIME_UNIT 50 /* Approx 50us resolution */ 61 #define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */ 62 #define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */ 63 #define MCE_IRDATA_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */ 64 #define MCE_IRDATA_TRAILER 0x80 /* End of IR data */ 65 #define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */ 66 #define MCE_DEFAULT_TX_MASK 0x03 /* Vals: TX1=0x01, TX2=0x02, ALL=0x03 */ 67 #define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */ 68 #define MCE_PULSE_MASK 0x7f /* Pulse mask */ 69 #define MCE_MAX_PULSE_LENGTH 0x7f /* Longest transmittable pulse symbol */ 70 71 /* 72 * The interface between the host and the IR hardware is command-response 73 * based. All commands and responses have a consistent format, where a lead 74 * byte always identifies the type of data following it. The lead byte has 75 * a port value in the 3 highest bits and a length value in the 5 lowest 76 * bits. 77 * 78 * The length field is overloaded, with a value of 11111 indicating that the 79 * following byte is a command or response code, and the length of the entire 80 * message is determined by the code. If the length field is not 11111, then 81 * it specifies the number of bytes of port data that follow. 82 */ 83 #define MCE_CMD 0x1f 84 #define MCE_PORT_IR 0x4 /* (0x4 << 5) | MCE_CMD = 0x9f */ 85 #define MCE_PORT_SYS 0x7 /* (0x7 << 5) | MCE_CMD = 0xff */ 86 #define MCE_PORT_SER 0x6 /* 0xc0 thru 0xdf flush & 0x1f bytes */ 87 #define MCE_PORT_MASK 0xe0 /* Mask out command bits */ 88 89 /* Command port headers */ 90 #define MCE_CMD_PORT_IR 0x9f /* IR-related cmd/rsp */ 91 #define MCE_CMD_PORT_SYS 0xff /* System (non-IR) device cmd/rsp */ 92 93 /* Commands that set device state (2-4 bytes in length) */ 94 #define MCE_CMD_RESET 0xfe /* Reset device, 2 bytes */ 95 #define MCE_CMD_RESUME 0xaa /* Resume device after error, 2 bytes */ 96 #define MCE_CMD_SETIRCFS 0x06 /* Set tx carrier, 4 bytes */ 97 #define MCE_CMD_SETIRTIMEOUT 0x0c /* Set timeout, 4 bytes */ 98 #define MCE_CMD_SETIRTXPORTS 0x08 /* Set tx ports, 3 bytes */ 99 #define MCE_CMD_SETIRRXPORTEN 0x14 /* Set rx ports, 3 bytes */ 100 #define MCE_CMD_FLASHLED 0x23 /* Flash receiver LED, 2 bytes */ 101 102 /* Commands that query device state (all 2 bytes, unless noted) */ 103 #define MCE_CMD_GETIRCFS 0x07 /* Get carrier */ 104 #define MCE_CMD_GETIRTIMEOUT 0x0d /* Get timeout */ 105 #define MCE_CMD_GETIRTXPORTS 0x13 /* Get tx ports */ 106 #define MCE_CMD_GETIRRXPORTEN 0x15 /* Get rx ports */ 107 #define MCE_CMD_GETPORTSTATUS 0x11 /* Get tx port status, 3 bytes */ 108 #define MCE_CMD_GETIRNUMPORTS 0x16 /* Get number of ports */ 109 #define MCE_CMD_GETWAKESOURCE 0x17 /* Get wake source */ 110 #define MCE_CMD_GETEMVER 0x22 /* Get emulator interface version */ 111 #define MCE_CMD_GETDEVDETAILS 0x21 /* Get device details (em ver2 only) */ 112 #define MCE_CMD_GETWAKESUPPORT 0x20 /* Get wake details (em ver2 only) */ 113 #define MCE_CMD_GETWAKEVERSION 0x18 /* Get wake pattern (em ver2 only) */ 114 115 /* Misc commands */ 116 #define MCE_CMD_NOP 0xff /* No operation */ 117 118 /* Responses to commands (non-error cases) */ 119 #define MCE_RSP_EQIRCFS 0x06 /* tx carrier, 4 bytes */ 120 #define MCE_RSP_EQIRTIMEOUT 0x0c /* rx timeout, 4 bytes */ 121 #define MCE_RSP_GETWAKESOURCE 0x17 /* wake source, 3 bytes */ 122 #define MCE_RSP_EQIRTXPORTS 0x08 /* tx port mask, 3 bytes */ 123 #define MCE_RSP_EQIRRXPORTEN 0x14 /* rx port mask, 3 bytes */ 124 #define MCE_RSP_GETPORTSTATUS 0x11 /* tx port status, 7 bytes */ 125 #define MCE_RSP_EQIRRXCFCNT 0x15 /* rx carrier count, 4 bytes */ 126 #define MCE_RSP_EQIRNUMPORTS 0x16 /* number of ports, 4 bytes */ 127 #define MCE_RSP_EQWAKESUPPORT 0x20 /* wake capabilities, 3 bytes */ 128 #define MCE_RSP_EQWAKEVERSION 0x18 /* wake pattern details, 6 bytes */ 129 #define MCE_RSP_EQDEVDETAILS 0x21 /* device capabilities, 3 bytes */ 130 #define MCE_RSP_EQEMVER 0x22 /* emulator interface ver, 3 bytes */ 131 #define MCE_RSP_FLASHLED 0x23 /* success flashing LED, 2 bytes */ 132 133 /* Responses to error cases, must send MCE_CMD_RESUME to clear them */ 134 #define MCE_RSP_CMD_ILLEGAL 0xfe /* illegal command for port, 2 bytes */ 135 #define MCE_RSP_TX_TIMEOUT 0x81 /* tx timed out, 2 bytes */ 136 137 /* Misc commands/responses not defined in the MCE remote/transceiver spec */ 138 #define MCE_CMD_SIG_END 0x01 /* End of signal */ 139 #define MCE_CMD_PING 0x03 /* Ping device */ 140 #define MCE_CMD_UNKNOWN 0x04 /* Unknown */ 141 #define MCE_CMD_UNKNOWN2 0x05 /* Unknown */ 142 #define MCE_CMD_UNKNOWN3 0x09 /* Unknown */ 143 #define MCE_CMD_UNKNOWN4 0x0a /* Unknown */ 144 #define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */ 145 #define MCE_CMD_UNKNOWN5 0x0e /* Unknown */ 146 #define MCE_CMD_UNKNOWN6 0x0f /* Unknown */ 147 #define MCE_CMD_UNKNOWN8 0x19 /* Unknown */ 148 #define MCE_CMD_UNKNOWN9 0x1b /* Unknown */ 149 #define MCE_CMD_NULL 0x00 /* These show up various places... */ 150 151 /* if buf[i] & MCE_PORT_MASK == 0x80 and buf[i] != MCE_CMD_PORT_IR, 152 * then we're looking at a raw IR data sample */ 153 #define MCE_COMMAND_IRDATA 0x80 154 #define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */ 155 156 /* general constants */ 157 #define SEND_FLAG_IN_PROGRESS 1 158 #define SEND_FLAG_COMPLETE 2 159 #define RECV_FLAG_IN_PROGRESS 3 160 #define RECV_FLAG_COMPLETE 4 161 162 #define MCEUSB_RX 1 163 #define MCEUSB_TX 2 164 165 #define VENDOR_PHILIPS 0x0471 166 #define VENDOR_SMK 0x0609 167 #define VENDOR_TATUNG 0x1460 168 #define VENDOR_GATEWAY 0x107b 169 #define VENDOR_SHUTTLE 0x1308 170 #define VENDOR_SHUTTLE2 0x051c 171 #define VENDOR_MITSUMI 0x03ee 172 #define VENDOR_TOPSEED 0x1784 173 #define VENDOR_RICAVISION 0x179d 174 #define VENDOR_ITRON 0x195d 175 #define VENDOR_FIC 0x1509 176 #define VENDOR_LG 0x043e 177 #define VENDOR_MICROSOFT 0x045e 178 #define VENDOR_FORMOSA 0x147a 179 #define VENDOR_FINTEK 0x1934 180 #define VENDOR_PINNACLE 0x2304 181 #define VENDOR_ECS 0x1019 182 #define VENDOR_WISTRON 0x0fb8 183 #define VENDOR_COMPRO 0x185b 184 #define VENDOR_NORTHSTAR 0x04eb 185 #define VENDOR_REALTEK 0x0bda 186 #define VENDOR_TIVO 0x105a 187 #define VENDOR_CONEXANT 0x0572 188 #define VENDOR_TWISTEDMELON 0x2596 189 #define VENDOR_HAUPPAUGE 0x2040 190 #define VENDOR_PCTV 0x2013 191 192 enum mceusb_model_type { 193 MCE_GEN2 = 0, /* Most boards */ 194 MCE_GEN1, 195 MCE_GEN3, 196 MCE_GEN2_TX_INV, 197 POLARIS_EVK, 198 CX_HYBRID_TV, 199 MULTIFUNCTION, 200 TIVO_KIT, 201 MCE_GEN2_NO_TX, 202 HAUPPAUGE_CX_HYBRID_TV, 203 }; 204 205 struct mceusb_model { 206 u32 mce_gen1:1; 207 u32 mce_gen2:1; 208 u32 mce_gen3:1; 209 u32 tx_mask_normal:1; 210 u32 no_tx:1; 211 212 int ir_intfnum; 213 214 const char *rc_map; /* Allow specify a per-board map */ 215 const char *name; /* per-board name */ 216 }; 217 218 static const struct mceusb_model mceusb_model[] = { 219 [MCE_GEN1] = { 220 .mce_gen1 = 1, 221 .tx_mask_normal = 1, 222 }, 223 [MCE_GEN2] = { 224 .mce_gen2 = 1, 225 }, 226 [MCE_GEN2_NO_TX] = { 227 .mce_gen2 = 1, 228 .no_tx = 1, 229 }, 230 [MCE_GEN2_TX_INV] = { 231 .mce_gen2 = 1, 232 .tx_mask_normal = 1, 233 }, 234 [MCE_GEN3] = { 235 .mce_gen3 = 1, 236 .tx_mask_normal = 1, 237 }, 238 [POLARIS_EVK] = { 239 /* 240 * In fact, the EVK is shipped without 241 * remotes, but we should have something handy, 242 * to allow testing it 243 */ 244 .name = "Conexant Hybrid TV (cx231xx) MCE IR", 245 }, 246 [CX_HYBRID_TV] = { 247 .no_tx = 1, /* tx isn't wired up at all */ 248 .name = "Conexant Hybrid TV (cx231xx) MCE IR", 249 }, 250 [HAUPPAUGE_CX_HYBRID_TV] = { 251 .no_tx = 1, /* eeprom says it has no tx */ 252 .name = "Conexant Hybrid TV (cx231xx) MCE IR no TX", 253 }, 254 [MULTIFUNCTION] = { 255 .mce_gen2 = 1, 256 .ir_intfnum = 2, 257 }, 258 [TIVO_KIT] = { 259 .mce_gen2 = 1, 260 .rc_map = RC_MAP_TIVO, 261 }, 262 }; 263 264 static struct usb_device_id mceusb_dev_table[] = { 265 /* Original Microsoft MCE IR Transceiver (often HP-branded) */ 266 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d), 267 .driver_info = MCE_GEN1 }, 268 /* Philips Infrared Transceiver - Sahara branded */ 269 { USB_DEVICE(VENDOR_PHILIPS, 0x0608) }, 270 /* Philips Infrared Transceiver - HP branded */ 271 { USB_DEVICE(VENDOR_PHILIPS, 0x060c), 272 .driver_info = MCE_GEN2_TX_INV }, 273 /* Philips SRM5100 */ 274 { USB_DEVICE(VENDOR_PHILIPS, 0x060d) }, 275 /* Philips Infrared Transceiver - Omaura */ 276 { USB_DEVICE(VENDOR_PHILIPS, 0x060f) }, 277 /* Philips Infrared Transceiver - Spinel plus */ 278 { USB_DEVICE(VENDOR_PHILIPS, 0x0613) }, 279 /* Philips eHome Infrared Transceiver */ 280 { USB_DEVICE(VENDOR_PHILIPS, 0x0815) }, 281 /* Philips/Spinel plus IR transceiver for ASUS */ 282 { USB_DEVICE(VENDOR_PHILIPS, 0x206c) }, 283 /* Philips/Spinel plus IR transceiver for ASUS */ 284 { USB_DEVICE(VENDOR_PHILIPS, 0x2088) }, 285 /* Philips IR transceiver (Dell branded) */ 286 { USB_DEVICE(VENDOR_PHILIPS, 0x2093), 287 .driver_info = MCE_GEN2_TX_INV }, 288 /* Realtek MCE IR Receiver and card reader */ 289 { USB_DEVICE(VENDOR_REALTEK, 0x0161), 290 .driver_info = MULTIFUNCTION }, 291 /* SMK/Toshiba G83C0004D410 */ 292 { USB_DEVICE(VENDOR_SMK, 0x031d), 293 .driver_info = MCE_GEN2_TX_INV }, 294 /* SMK eHome Infrared Transceiver (Sony VAIO) */ 295 { USB_DEVICE(VENDOR_SMK, 0x0322), 296 .driver_info = MCE_GEN2_TX_INV }, 297 /* bundled with Hauppauge PVR-150 */ 298 { USB_DEVICE(VENDOR_SMK, 0x0334), 299 .driver_info = MCE_GEN2_TX_INV }, 300 /* SMK eHome Infrared Transceiver */ 301 { USB_DEVICE(VENDOR_SMK, 0x0338) }, 302 /* SMK/I-O Data GV-MC7/RCKIT Receiver */ 303 { USB_DEVICE(VENDOR_SMK, 0x0353), 304 .driver_info = MCE_GEN2_NO_TX }, 305 /* Tatung eHome Infrared Transceiver */ 306 { USB_DEVICE(VENDOR_TATUNG, 0x9150) }, 307 /* Shuttle eHome Infrared Transceiver */ 308 { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) }, 309 /* Shuttle eHome Infrared Transceiver */ 310 { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) }, 311 /* Gateway eHome Infrared Transceiver */ 312 { USB_DEVICE(VENDOR_GATEWAY, 0x3009) }, 313 /* Mitsumi */ 314 { USB_DEVICE(VENDOR_MITSUMI, 0x2501) }, 315 /* Topseed eHome Infrared Transceiver */ 316 { USB_DEVICE(VENDOR_TOPSEED, 0x0001), 317 .driver_info = MCE_GEN2_TX_INV }, 318 /* Topseed HP eHome Infrared Transceiver */ 319 { USB_DEVICE(VENDOR_TOPSEED, 0x0006), 320 .driver_info = MCE_GEN2_TX_INV }, 321 /* Topseed eHome Infrared Transceiver */ 322 { USB_DEVICE(VENDOR_TOPSEED, 0x0007), 323 .driver_info = MCE_GEN2_TX_INV }, 324 /* Topseed eHome Infrared Transceiver */ 325 { USB_DEVICE(VENDOR_TOPSEED, 0x0008), 326 .driver_info = MCE_GEN3 }, 327 /* Topseed eHome Infrared Transceiver */ 328 { USB_DEVICE(VENDOR_TOPSEED, 0x000a), 329 .driver_info = MCE_GEN2_TX_INV }, 330 /* Topseed eHome Infrared Transceiver */ 331 { USB_DEVICE(VENDOR_TOPSEED, 0x0011), 332 .driver_info = MCE_GEN3 }, 333 /* Ricavision internal Infrared Transceiver */ 334 { USB_DEVICE(VENDOR_RICAVISION, 0x0010) }, 335 /* Itron ione Libra Q-11 */ 336 { USB_DEVICE(VENDOR_ITRON, 0x7002) }, 337 /* FIC eHome Infrared Transceiver */ 338 { USB_DEVICE(VENDOR_FIC, 0x9242) }, 339 /* LG eHome Infrared Transceiver */ 340 { USB_DEVICE(VENDOR_LG, 0x9803) }, 341 /* Microsoft MCE Infrared Transceiver */ 342 { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) }, 343 /* Formosa eHome Infrared Transceiver */ 344 { USB_DEVICE(VENDOR_FORMOSA, 0xe015) }, 345 /* Formosa21 / eHome Infrared Receiver */ 346 { USB_DEVICE(VENDOR_FORMOSA, 0xe016) }, 347 /* Formosa aim / Trust MCE Infrared Receiver */ 348 { USB_DEVICE(VENDOR_FORMOSA, 0xe017), 349 .driver_info = MCE_GEN2_NO_TX }, 350 /* Formosa Industrial Computing / Beanbag Emulation Device */ 351 { USB_DEVICE(VENDOR_FORMOSA, 0xe018) }, 352 /* Formosa21 / eHome Infrared Receiver */ 353 { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) }, 354 /* Formosa Industrial Computing AIM IR605/A */ 355 { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) }, 356 /* Formosa Industrial Computing */ 357 { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) }, 358 /* Formosa Industrial Computing */ 359 { USB_DEVICE(VENDOR_FORMOSA, 0xe042) }, 360 /* Fintek eHome Infrared Transceiver (HP branded) */ 361 { USB_DEVICE(VENDOR_FINTEK, 0x5168), 362 .driver_info = MCE_GEN2_TX_INV }, 363 /* Fintek eHome Infrared Transceiver */ 364 { USB_DEVICE(VENDOR_FINTEK, 0x0602) }, 365 /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */ 366 { USB_DEVICE(VENDOR_FINTEK, 0x0702) }, 367 /* Pinnacle Remote Kit */ 368 { USB_DEVICE(VENDOR_PINNACLE, 0x0225), 369 .driver_info = MCE_GEN3 }, 370 /* Elitegroup Computer Systems IR */ 371 { USB_DEVICE(VENDOR_ECS, 0x0f38) }, 372 /* Wistron Corp. eHome Infrared Receiver */ 373 { USB_DEVICE(VENDOR_WISTRON, 0x0002) }, 374 /* Compro K100 */ 375 { USB_DEVICE(VENDOR_COMPRO, 0x3020) }, 376 /* Compro K100 v2 */ 377 { USB_DEVICE(VENDOR_COMPRO, 0x3082) }, 378 /* Northstar Systems, Inc. eHome Infrared Transceiver */ 379 { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) }, 380 /* TiVo PC IR Receiver */ 381 { USB_DEVICE(VENDOR_TIVO, 0x2000), 382 .driver_info = TIVO_KIT }, 383 /* Conexant Hybrid TV "Shelby" Polaris SDK */ 384 { USB_DEVICE(VENDOR_CONEXANT, 0x58a1), 385 .driver_info = POLARIS_EVK }, 386 /* Conexant Hybrid TV RDU253S Polaris */ 387 { USB_DEVICE(VENDOR_CONEXANT, 0x58a5), 388 .driver_info = CX_HYBRID_TV }, 389 /* Twisted Melon Inc. - Manta Mini Receiver */ 390 { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8008) }, 391 /* Twisted Melon Inc. - Manta Pico Receiver */ 392 { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8016) }, 393 /* Twisted Melon Inc. - Manta Transceiver */ 394 { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8042) }, 395 /* Hauppauge WINTV-HVR-HVR 930C-HD - based on cx231xx */ 396 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb130), 397 .driver_info = HAUPPAUGE_CX_HYBRID_TV }, 398 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb131), 399 .driver_info = HAUPPAUGE_CX_HYBRID_TV }, 400 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb138), 401 .driver_info = HAUPPAUGE_CX_HYBRID_TV }, 402 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb139), 403 .driver_info = HAUPPAUGE_CX_HYBRID_TV }, 404 { USB_DEVICE(VENDOR_PCTV, 0x0259), 405 .driver_info = HAUPPAUGE_CX_HYBRID_TV }, 406 { USB_DEVICE(VENDOR_PCTV, 0x025e), 407 .driver_info = HAUPPAUGE_CX_HYBRID_TV }, 408 409 /* Terminating entry */ 410 { } 411 }; 412 413 /* data structure for each usb transceiver */ 414 struct mceusb_dev { 415 /* ir-core bits */ 416 struct rc_dev *rc; 417 418 /* optional features we can enable */ 419 bool carrier_report_enabled; 420 bool learning_enabled; 421 422 /* core device bits */ 423 struct device *dev; 424 425 /* usb */ 426 struct usb_device *usbdev; 427 struct urb *urb_in; 428 struct usb_endpoint_descriptor *usb_ep_out; 429 430 /* buffers and dma */ 431 unsigned char *buf_in; 432 unsigned int len_in; 433 dma_addr_t dma_in; 434 435 enum { 436 CMD_HEADER = 0, 437 SUBCMD, 438 CMD_DATA, 439 PARSE_IRDATA, 440 } parser_state; 441 442 u8 cmd, rem; /* Remaining IR data bytes in packet */ 443 444 struct { 445 u32 connected:1; 446 u32 tx_mask_normal:1; 447 u32 microsoft_gen1:1; 448 u32 no_tx:1; 449 } flags; 450 451 /* transmit support */ 452 int send_flags; 453 u32 carrier; 454 unsigned char tx_mask; 455 456 char name[128]; 457 char phys[64]; 458 enum mceusb_model_type model; 459 460 bool need_reset; /* flag to issue a device resume cmd */ 461 u8 emver; /* emulator interface version */ 462 u8 num_txports; /* number of transmit ports */ 463 u8 num_rxports; /* number of receive sensors */ 464 u8 txports_cabled; /* bitmask of transmitters with cable */ 465 u8 rxports_active; /* bitmask of active receive sensors */ 466 }; 467 468 /* MCE Device Command Strings, generally a port and command pair */ 469 static char DEVICE_RESUME[] = {MCE_CMD_NULL, MCE_CMD_PORT_SYS, 470 MCE_CMD_RESUME}; 471 static char GET_REVISION[] = {MCE_CMD_PORT_SYS, MCE_CMD_G_REVISION}; 472 static char GET_EMVER[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETEMVER}; 473 static char GET_WAKEVERSION[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETWAKEVERSION}; 474 static char FLASH_LED[] = {MCE_CMD_PORT_SYS, MCE_CMD_FLASHLED}; 475 static char GET_UNKNOWN2[] = {MCE_CMD_PORT_IR, MCE_CMD_UNKNOWN2}; 476 static char GET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRCFS}; 477 static char GET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTIMEOUT}; 478 static char GET_NUM_PORTS[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRNUMPORTS}; 479 static char GET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTXPORTS}; 480 static char GET_RX_SENSOR[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRRXPORTEN}; 481 /* sub in desired values in lower byte or bytes for full command */ 482 /* FIXME: make use of these for transmit. 483 static char SET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR, 484 MCE_CMD_SETIRCFS, 0x00, 0x00}; 485 static char SET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_SETIRTXPORTS, 0x00}; 486 static char SET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR, 487 MCE_CMD_SETIRTIMEOUT, 0x00, 0x00}; 488 static char SET_RX_SENSOR[] = {MCE_CMD_PORT_IR, 489 MCE_RSP_EQIRRXPORTEN, 0x00}; 490 */ 491 492 static int mceusb_cmd_datasize(u8 cmd, u8 subcmd) 493 { 494 int datasize = 0; 495 496 switch (cmd) { 497 case MCE_CMD_NULL: 498 if (subcmd == MCE_CMD_PORT_SYS) 499 datasize = 1; 500 break; 501 case MCE_CMD_PORT_SYS: 502 switch (subcmd) { 503 case MCE_RSP_GETPORTSTATUS: 504 datasize = 5; 505 break; 506 case MCE_RSP_EQWAKEVERSION: 507 datasize = 4; 508 break; 509 case MCE_CMD_G_REVISION: 510 datasize = 2; 511 break; 512 case MCE_RSP_EQWAKESUPPORT: 513 case MCE_RSP_GETWAKESOURCE: 514 case MCE_RSP_EQDEVDETAILS: 515 case MCE_RSP_EQEMVER: 516 datasize = 1; 517 break; 518 } 519 case MCE_CMD_PORT_IR: 520 switch (subcmd) { 521 case MCE_CMD_UNKNOWN: 522 case MCE_RSP_EQIRCFS: 523 case MCE_RSP_EQIRTIMEOUT: 524 case MCE_RSP_EQIRRXCFCNT: 525 case MCE_RSP_EQIRNUMPORTS: 526 datasize = 2; 527 break; 528 case MCE_CMD_SIG_END: 529 case MCE_RSP_EQIRTXPORTS: 530 case MCE_RSP_EQIRRXPORTEN: 531 datasize = 1; 532 break; 533 } 534 } 535 return datasize; 536 } 537 538 static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf, 539 int offset, int len, bool out) 540 { 541 #if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) 542 char *inout; 543 u8 cmd, subcmd, data1, data2, data3, data4; 544 struct device *dev = ir->dev; 545 int start, skip = 0; 546 u32 carrier, period; 547 548 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ 549 if (ir->flags.microsoft_gen1 && !out && !offset) 550 skip = 2; 551 552 if (len <= skip) 553 return; 554 555 dev_dbg(dev, "%cx data: %*ph (length=%d)", 556 (out ? 't' : 'r'), min(len, USB_BUFLEN), buf, len); 557 558 inout = out ? "Request" : "Got"; 559 560 start = offset + skip; 561 cmd = buf[start] & 0xff; 562 subcmd = buf[start + 1] & 0xff; 563 data1 = buf[start + 2] & 0xff; 564 data2 = buf[start + 3] & 0xff; 565 data3 = buf[start + 4] & 0xff; 566 data4 = buf[start + 5] & 0xff; 567 568 switch (cmd) { 569 case MCE_CMD_NULL: 570 if (subcmd == MCE_CMD_NULL) 571 break; 572 if ((subcmd == MCE_CMD_PORT_SYS) && 573 (data1 == MCE_CMD_RESUME)) 574 dev_dbg(dev, "Device resume requested"); 575 else 576 dev_dbg(dev, "Unknown command 0x%02x 0x%02x", 577 cmd, subcmd); 578 break; 579 case MCE_CMD_PORT_SYS: 580 switch (subcmd) { 581 case MCE_RSP_EQEMVER: 582 if (!out) 583 dev_dbg(dev, "Emulator interface version %x", 584 data1); 585 break; 586 case MCE_CMD_G_REVISION: 587 if (len == 2) 588 dev_dbg(dev, "Get hw/sw rev?"); 589 else 590 dev_dbg(dev, "hw/sw rev 0x%02x 0x%02x 0x%02x 0x%02x", 591 data1, data2, 592 buf[start + 4], buf[start + 5]); 593 break; 594 case MCE_CMD_RESUME: 595 dev_dbg(dev, "Device resume requested"); 596 break; 597 case MCE_RSP_CMD_ILLEGAL: 598 dev_dbg(dev, "Illegal PORT_SYS command"); 599 break; 600 case MCE_RSP_EQWAKEVERSION: 601 if (!out) 602 dev_dbg(dev, "Wake version, proto: 0x%02x, " 603 "payload: 0x%02x, address: 0x%02x, " 604 "version: 0x%02x", 605 data1, data2, data3, data4); 606 break; 607 case MCE_RSP_GETPORTSTATUS: 608 if (!out) 609 /* We use data1 + 1 here, to match hw labels */ 610 dev_dbg(dev, "TX port %d: blaster is%s connected", 611 data1 + 1, data4 ? " not" : ""); 612 break; 613 case MCE_CMD_FLASHLED: 614 dev_dbg(dev, "Attempting to flash LED"); 615 break; 616 default: 617 dev_dbg(dev, "Unknown command 0x%02x 0x%02x", 618 cmd, subcmd); 619 break; 620 } 621 break; 622 case MCE_CMD_PORT_IR: 623 switch (subcmd) { 624 case MCE_CMD_SIG_END: 625 dev_dbg(dev, "End of signal"); 626 break; 627 case MCE_CMD_PING: 628 dev_dbg(dev, "Ping"); 629 break; 630 case MCE_CMD_UNKNOWN: 631 dev_dbg(dev, "Resp to 9f 05 of 0x%02x 0x%02x", 632 data1, data2); 633 break; 634 case MCE_RSP_EQIRCFS: 635 period = DIV_ROUND_CLOSEST( 636 (1U << data1 * 2) * (data2 + 1), 10); 637 if (!period) 638 break; 639 carrier = (1000 * 1000) / period; 640 dev_dbg(dev, "%s carrier of %u Hz (period %uus)", 641 inout, carrier, period); 642 break; 643 case MCE_CMD_GETIRCFS: 644 dev_dbg(dev, "Get carrier mode and freq"); 645 break; 646 case MCE_RSP_EQIRTXPORTS: 647 dev_dbg(dev, "%s transmit blaster mask of 0x%02x", 648 inout, data1); 649 break; 650 case MCE_RSP_EQIRTIMEOUT: 651 /* value is in units of 50us, so x*50/1000 ms */ 652 period = ((data1 << 8) | data2) * MCE_TIME_UNIT / 1000; 653 dev_dbg(dev, "%s receive timeout of %d ms", 654 inout, period); 655 break; 656 case MCE_CMD_GETIRTIMEOUT: 657 dev_dbg(dev, "Get receive timeout"); 658 break; 659 case MCE_CMD_GETIRTXPORTS: 660 dev_dbg(dev, "Get transmit blaster mask"); 661 break; 662 case MCE_RSP_EQIRRXPORTEN: 663 dev_dbg(dev, "%s %s-range receive sensor in use", 664 inout, data1 == 0x02 ? "short" : "long"); 665 break; 666 case MCE_CMD_GETIRRXPORTEN: 667 /* aka MCE_RSP_EQIRRXCFCNT */ 668 if (out) 669 dev_dbg(dev, "Get receive sensor"); 670 else if (ir->learning_enabled) 671 dev_dbg(dev, "RX pulse count: %d", 672 ((data1 << 8) | data2)); 673 break; 674 case MCE_RSP_EQIRNUMPORTS: 675 if (out) 676 break; 677 dev_dbg(dev, "Num TX ports: %x, num RX ports: %x", 678 data1, data2); 679 break; 680 case MCE_RSP_CMD_ILLEGAL: 681 dev_dbg(dev, "Illegal PORT_IR command"); 682 break; 683 default: 684 dev_dbg(dev, "Unknown command 0x%02x 0x%02x", 685 cmd, subcmd); 686 break; 687 } 688 break; 689 default: 690 break; 691 } 692 693 if (cmd == MCE_IRDATA_TRAILER) 694 dev_dbg(dev, "End of raw IR data"); 695 else if ((cmd != MCE_CMD_PORT_IR) && 696 ((cmd & MCE_PORT_MASK) == MCE_COMMAND_IRDATA)) 697 dev_dbg(dev, "Raw IR data, %d pulse/space samples", ir->rem); 698 #endif 699 } 700 701 static void mce_async_callback(struct urb *urb) 702 { 703 struct mceusb_dev *ir; 704 int len; 705 706 if (!urb) 707 return; 708 709 ir = urb->context; 710 711 switch (urb->status) { 712 /* success */ 713 case 0: 714 len = urb->actual_length; 715 716 mceusb_dev_printdata(ir, urb->transfer_buffer, 0, len, true); 717 break; 718 719 case -ECONNRESET: 720 case -ENOENT: 721 case -EILSEQ: 722 case -ESHUTDOWN: 723 break; 724 725 case -EPIPE: 726 default: 727 dev_err(ir->dev, "Error: request urb status = %d", urb->status); 728 break; 729 } 730 731 /* the transfer buffer and urb were allocated in mce_request_packet */ 732 kfree(urb->transfer_buffer); 733 usb_free_urb(urb); 734 } 735 736 /* request incoming or send outgoing usb packet - used to initialize remote */ 737 static void mce_request_packet(struct mceusb_dev *ir, unsigned char *data, 738 int size, int urb_type) 739 { 740 int res, pipe; 741 struct urb *async_urb; 742 struct device *dev = ir->dev; 743 unsigned char *async_buf; 744 745 if (urb_type == MCEUSB_TX) { 746 async_urb = usb_alloc_urb(0, GFP_KERNEL); 747 if (unlikely(!async_urb)) { 748 dev_err(dev, "Error, couldn't allocate urb!\n"); 749 return; 750 } 751 752 async_buf = kzalloc(size, GFP_KERNEL); 753 if (!async_buf) { 754 dev_err(dev, "Error, couldn't allocate buf!\n"); 755 usb_free_urb(async_urb); 756 return; 757 } 758 759 /* outbound data */ 760 if (usb_endpoint_xfer_int(ir->usb_ep_out)) { 761 pipe = usb_sndintpipe(ir->usbdev, 762 ir->usb_ep_out->bEndpointAddress); 763 usb_fill_int_urb(async_urb, ir->usbdev, pipe, async_buf, 764 size, mce_async_callback, ir, 765 ir->usb_ep_out->bInterval); 766 } else { 767 pipe = usb_sndbulkpipe(ir->usbdev, 768 ir->usb_ep_out->bEndpointAddress); 769 usb_fill_bulk_urb(async_urb, ir->usbdev, pipe, 770 async_buf, size, mce_async_callback, 771 ir); 772 } 773 memcpy(async_buf, data, size); 774 775 } else if (urb_type == MCEUSB_RX) { 776 /* standard request */ 777 async_urb = ir->urb_in; 778 ir->send_flags = RECV_FLAG_IN_PROGRESS; 779 780 } else { 781 dev_err(dev, "Error! Unknown urb type %d\n", urb_type); 782 return; 783 } 784 785 dev_dbg(dev, "receive request called (size=%#x)", size); 786 787 async_urb->transfer_buffer_length = size; 788 async_urb->dev = ir->usbdev; 789 790 res = usb_submit_urb(async_urb, GFP_ATOMIC); 791 if (res) { 792 dev_err(dev, "receive request FAILED! (res=%d)", res); 793 return; 794 } 795 dev_dbg(dev, "receive request complete (res=%d)", res); 796 } 797 798 static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size) 799 { 800 int rsize = sizeof(DEVICE_RESUME); 801 802 if (ir->need_reset) { 803 ir->need_reset = false; 804 mce_request_packet(ir, DEVICE_RESUME, rsize, MCEUSB_TX); 805 msleep(10); 806 } 807 808 mce_request_packet(ir, data, size, MCEUSB_TX); 809 msleep(10); 810 } 811 812 static void mce_flush_rx_buffer(struct mceusb_dev *ir, int size) 813 { 814 mce_request_packet(ir, NULL, size, MCEUSB_RX); 815 } 816 817 /* Send data out the IR blaster port(s) */ 818 static int mceusb_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count) 819 { 820 struct mceusb_dev *ir = dev->priv; 821 int i, length, ret = 0; 822 int cmdcount = 0; 823 unsigned char cmdbuf[MCE_CMDBUF_SIZE]; 824 825 /* MCE tx init header */ 826 cmdbuf[cmdcount++] = MCE_CMD_PORT_IR; 827 cmdbuf[cmdcount++] = MCE_CMD_SETIRTXPORTS; 828 cmdbuf[cmdcount++] = ir->tx_mask; 829 830 /* Send the set TX ports command */ 831 mce_async_out(ir, cmdbuf, cmdcount); 832 cmdcount = 0; 833 834 /* Generate mce packet data */ 835 for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) { 836 txbuf[i] = txbuf[i] / MCE_TIME_UNIT; 837 838 do { /* loop to support long pulses/spaces > 127*50us=6.35ms */ 839 840 /* Insert mce packet header every 4th entry */ 841 if ((cmdcount < MCE_CMDBUF_SIZE) && 842 (cmdcount % MCE_CODE_LENGTH) == 0) 843 cmdbuf[cmdcount++] = MCE_IRDATA_HEADER; 844 845 /* Insert mce packet data */ 846 if (cmdcount < MCE_CMDBUF_SIZE) 847 cmdbuf[cmdcount++] = 848 (txbuf[i] < MCE_PULSE_BIT ? 849 txbuf[i] : MCE_MAX_PULSE_LENGTH) | 850 (i & 1 ? 0x00 : MCE_PULSE_BIT); 851 else { 852 ret = -EINVAL; 853 goto out; 854 } 855 856 } while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) && 857 (txbuf[i] -= MCE_MAX_PULSE_LENGTH)); 858 } 859 860 /* Check if we have room for the empty packet at the end */ 861 if (cmdcount >= MCE_CMDBUF_SIZE) { 862 ret = -EINVAL; 863 goto out; 864 } 865 866 /* Fix packet length in last header */ 867 length = cmdcount % MCE_CODE_LENGTH; 868 cmdbuf[cmdcount - length] -= MCE_CODE_LENGTH - length; 869 870 /* All mce commands end with an empty packet (0x80) */ 871 cmdbuf[cmdcount++] = MCE_IRDATA_TRAILER; 872 873 /* Transmit the command to the mce device */ 874 mce_async_out(ir, cmdbuf, cmdcount); 875 876 out: 877 return ret ? ret : count; 878 } 879 880 /* Sets active IR outputs -- mce devices typically have two */ 881 static int mceusb_set_tx_mask(struct rc_dev *dev, u32 mask) 882 { 883 struct mceusb_dev *ir = dev->priv; 884 885 if (ir->flags.tx_mask_normal) 886 ir->tx_mask = mask; 887 else 888 ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ? 889 mask ^ MCE_DEFAULT_TX_MASK : mask) << 1; 890 891 return 0; 892 } 893 894 /* Sets the send carrier frequency and mode */ 895 static int mceusb_set_tx_carrier(struct rc_dev *dev, u32 carrier) 896 { 897 struct mceusb_dev *ir = dev->priv; 898 int clk = 10000000; 899 int prescaler = 0, divisor = 0; 900 unsigned char cmdbuf[4] = { MCE_CMD_PORT_IR, 901 MCE_CMD_SETIRCFS, 0x00, 0x00 }; 902 903 /* Carrier has changed */ 904 if (ir->carrier != carrier) { 905 906 if (carrier == 0) { 907 ir->carrier = carrier; 908 cmdbuf[2] = MCE_CMD_SIG_END; 909 cmdbuf[3] = MCE_IRDATA_TRAILER; 910 dev_dbg(ir->dev, "disabling carrier modulation"); 911 mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); 912 return carrier; 913 } 914 915 for (prescaler = 0; prescaler < 4; ++prescaler) { 916 divisor = (clk >> (2 * prescaler)) / carrier; 917 if (divisor <= 0xff) { 918 ir->carrier = carrier; 919 cmdbuf[2] = prescaler; 920 cmdbuf[3] = divisor; 921 dev_dbg(ir->dev, "requesting %u HZ carrier", 922 carrier); 923 924 /* Transmit new carrier to mce device */ 925 mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); 926 return carrier; 927 } 928 } 929 930 return -EINVAL; 931 932 } 933 934 return carrier; 935 } 936 937 /* 938 * We don't do anything but print debug spew for many of the command bits 939 * we receive from the hardware, but some of them are useful information 940 * we want to store so that we can use them. 941 */ 942 static void mceusb_handle_command(struct mceusb_dev *ir, int index) 943 { 944 u8 hi = ir->buf_in[index + 1] & 0xff; 945 u8 lo = ir->buf_in[index + 2] & 0xff; 946 947 switch (ir->buf_in[index]) { 948 /* the one and only 5-byte return value command */ 949 case MCE_RSP_GETPORTSTATUS: 950 if ((ir->buf_in[index + 4] & 0xff) == 0x00) 951 ir->txports_cabled |= 1 << hi; 952 break; 953 954 /* 2-byte return value commands */ 955 case MCE_RSP_EQIRTIMEOUT: 956 ir->rc->timeout = US_TO_NS((hi << 8 | lo) * MCE_TIME_UNIT); 957 break; 958 case MCE_RSP_EQIRNUMPORTS: 959 ir->num_txports = hi; 960 ir->num_rxports = lo; 961 break; 962 963 /* 1-byte return value commands */ 964 case MCE_RSP_EQEMVER: 965 ir->emver = hi; 966 break; 967 case MCE_RSP_EQIRTXPORTS: 968 ir->tx_mask = hi; 969 break; 970 case MCE_RSP_EQIRRXPORTEN: 971 ir->learning_enabled = ((hi & 0x02) == 0x02); 972 ir->rxports_active = hi; 973 break; 974 case MCE_RSP_CMD_ILLEGAL: 975 ir->need_reset = true; 976 break; 977 default: 978 break; 979 } 980 } 981 982 static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len) 983 { 984 DEFINE_IR_RAW_EVENT(rawir); 985 bool event = false; 986 int i = 0; 987 988 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ 989 if (ir->flags.microsoft_gen1) 990 i = 2; 991 992 /* if there's no data, just return now */ 993 if (buf_len <= i) 994 return; 995 996 for (; i < buf_len; i++) { 997 switch (ir->parser_state) { 998 case SUBCMD: 999 ir->rem = mceusb_cmd_datasize(ir->cmd, ir->buf_in[i]); 1000 mceusb_dev_printdata(ir, ir->buf_in, i - 1, 1001 ir->rem + 2, false); 1002 mceusb_handle_command(ir, i); 1003 ir->parser_state = CMD_DATA; 1004 break; 1005 case PARSE_IRDATA: 1006 ir->rem--; 1007 init_ir_raw_event(&rawir); 1008 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0); 1009 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK) 1010 * US_TO_NS(MCE_TIME_UNIT); 1011 1012 dev_dbg(ir->dev, "Storing %s with duration %d", 1013 rawir.pulse ? "pulse" : "space", 1014 rawir.duration); 1015 1016 if (ir_raw_event_store_with_filter(ir->rc, &rawir)) 1017 event = true; 1018 break; 1019 case CMD_DATA: 1020 ir->rem--; 1021 break; 1022 case CMD_HEADER: 1023 /* decode mce packets of the form (84),AA,BB,CC,DD */ 1024 /* IR data packets can span USB messages - rem */ 1025 ir->cmd = ir->buf_in[i]; 1026 if ((ir->cmd == MCE_CMD_PORT_IR) || 1027 ((ir->cmd & MCE_PORT_MASK) != 1028 MCE_COMMAND_IRDATA)) { 1029 ir->parser_state = SUBCMD; 1030 continue; 1031 } 1032 ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK); 1033 mceusb_dev_printdata(ir, ir->buf_in, 1034 i, ir->rem + 1, false); 1035 if (ir->rem) 1036 ir->parser_state = PARSE_IRDATA; 1037 else 1038 ir_raw_event_reset(ir->rc); 1039 break; 1040 } 1041 1042 if (ir->parser_state != CMD_HEADER && !ir->rem) 1043 ir->parser_state = CMD_HEADER; 1044 } 1045 if (event) { 1046 dev_dbg(ir->dev, "processed IR data"); 1047 ir_raw_event_handle(ir->rc); 1048 } 1049 } 1050 1051 static void mceusb_dev_recv(struct urb *urb) 1052 { 1053 struct mceusb_dev *ir; 1054 int buf_len; 1055 1056 if (!urb) 1057 return; 1058 1059 ir = urb->context; 1060 if (!ir) { 1061 usb_unlink_urb(urb); 1062 return; 1063 } 1064 1065 buf_len = urb->actual_length; 1066 1067 if (ir->send_flags == RECV_FLAG_IN_PROGRESS) { 1068 ir->send_flags = SEND_FLAG_COMPLETE; 1069 dev_dbg(ir->dev, "setup answer received %d bytes\n", 1070 buf_len); 1071 } 1072 1073 switch (urb->status) { 1074 /* success */ 1075 case 0: 1076 mceusb_process_ir_data(ir, buf_len); 1077 break; 1078 1079 case -ECONNRESET: 1080 case -ENOENT: 1081 case -EILSEQ: 1082 case -ESHUTDOWN: 1083 usb_unlink_urb(urb); 1084 return; 1085 1086 case -EPIPE: 1087 default: 1088 dev_err(ir->dev, "Error: urb status = %d", urb->status); 1089 break; 1090 } 1091 1092 usb_submit_urb(urb, GFP_ATOMIC); 1093 } 1094 1095 static void mceusb_get_emulator_version(struct mceusb_dev *ir) 1096 { 1097 /* If we get no reply or an illegal command reply, its ver 1, says MS */ 1098 ir->emver = 1; 1099 mce_async_out(ir, GET_EMVER, sizeof(GET_EMVER)); 1100 } 1101 1102 static void mceusb_gen1_init(struct mceusb_dev *ir) 1103 { 1104 int ret; 1105 struct device *dev = ir->dev; 1106 char *data; 1107 1108 data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL); 1109 if (!data) { 1110 dev_err(dev, "%s: memory allocation failed!", __func__); 1111 return; 1112 } 1113 1114 /* 1115 * This is a strange one. Windows issues a set address to the device 1116 * on the receive control pipe and expect a certain value pair back 1117 */ 1118 ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0), 1119 USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0, 1120 data, USB_CTRL_MSG_SZ, HZ * 3); 1121 dev_dbg(dev, "set address - ret = %d", ret); 1122 dev_dbg(dev, "set address - data[0] = %d, data[1] = %d", 1123 data[0], data[1]); 1124 1125 /* set feature: bit rate 38400 bps */ 1126 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 1127 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR, 1128 0xc04e, 0x0000, NULL, 0, HZ * 3); 1129 1130 dev_dbg(dev, "set feature - ret = %d", ret); 1131 1132 /* bRequest 4: set char length to 8 bits */ 1133 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 1134 4, USB_TYPE_VENDOR, 1135 0x0808, 0x0000, NULL, 0, HZ * 3); 1136 dev_dbg(dev, "set char length - retB = %d", ret); 1137 1138 /* bRequest 2: set handshaking to use DTR/DSR */ 1139 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 1140 2, USB_TYPE_VENDOR, 1141 0x0000, 0x0100, NULL, 0, HZ * 3); 1142 dev_dbg(dev, "set handshake - retC = %d", ret); 1143 1144 /* device resume */ 1145 mce_async_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME)); 1146 1147 /* get hw/sw revision? */ 1148 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION)); 1149 1150 kfree(data); 1151 } 1152 1153 static void mceusb_gen2_init(struct mceusb_dev *ir) 1154 { 1155 /* device resume */ 1156 mce_async_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME)); 1157 1158 /* get wake version (protocol, key, address) */ 1159 mce_async_out(ir, GET_WAKEVERSION, sizeof(GET_WAKEVERSION)); 1160 1161 /* unknown what this one actually returns... */ 1162 mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2)); 1163 } 1164 1165 static void mceusb_get_parameters(struct mceusb_dev *ir) 1166 { 1167 int i; 1168 unsigned char cmdbuf[3] = { MCE_CMD_PORT_SYS, 1169 MCE_CMD_GETPORTSTATUS, 0x00 }; 1170 1171 /* defaults, if the hardware doesn't support querying */ 1172 ir->num_txports = 2; 1173 ir->num_rxports = 2; 1174 1175 /* get number of tx and rx ports */ 1176 mce_async_out(ir, GET_NUM_PORTS, sizeof(GET_NUM_PORTS)); 1177 1178 /* get the carrier and frequency */ 1179 mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ)); 1180 1181 if (ir->num_txports && !ir->flags.no_tx) 1182 /* get the transmitter bitmask */ 1183 mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK)); 1184 1185 /* get receiver timeout value */ 1186 mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT)); 1187 1188 /* get receiver sensor setting */ 1189 mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR)); 1190 1191 for (i = 0; i < ir->num_txports; i++) { 1192 cmdbuf[2] = i; 1193 mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); 1194 } 1195 } 1196 1197 static void mceusb_flash_led(struct mceusb_dev *ir) 1198 { 1199 if (ir->emver < 2) 1200 return; 1201 1202 mce_async_out(ir, FLASH_LED, sizeof(FLASH_LED)); 1203 } 1204 1205 static struct rc_dev *mceusb_init_rc_dev(struct mceusb_dev *ir) 1206 { 1207 struct usb_device *udev = ir->usbdev; 1208 struct device *dev = ir->dev; 1209 struct rc_dev *rc; 1210 int ret; 1211 1212 rc = rc_allocate_device(); 1213 if (!rc) { 1214 dev_err(dev, "remote dev allocation failed"); 1215 goto out; 1216 } 1217 1218 snprintf(ir->name, sizeof(ir->name), "%s (%04x:%04x)", 1219 mceusb_model[ir->model].name ? 1220 mceusb_model[ir->model].name : 1221 "Media Center Ed. eHome Infrared Remote Transceiver", 1222 le16_to_cpu(ir->usbdev->descriptor.idVendor), 1223 le16_to_cpu(ir->usbdev->descriptor.idProduct)); 1224 1225 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys)); 1226 1227 rc->input_name = ir->name; 1228 rc->input_phys = ir->phys; 1229 usb_to_input_id(ir->usbdev, &rc->input_id); 1230 rc->dev.parent = dev; 1231 rc->priv = ir; 1232 rc->driver_type = RC_DRIVER_IR_RAW; 1233 rc->allowed_protocols = RC_BIT_ALL; 1234 rc->timeout = MS_TO_NS(100); 1235 if (!ir->flags.no_tx) { 1236 rc->s_tx_mask = mceusb_set_tx_mask; 1237 rc->s_tx_carrier = mceusb_set_tx_carrier; 1238 rc->tx_ir = mceusb_tx_ir; 1239 } 1240 rc->driver_name = DRIVER_NAME; 1241 1242 switch (le16_to_cpu(udev->descriptor.idVendor)) { 1243 case VENDOR_HAUPPAUGE: 1244 rc->map_name = RC_MAP_HAUPPAUGE; 1245 break; 1246 case VENDOR_PCTV: 1247 rc->map_name = RC_MAP_PINNACLE_PCTV_HD; 1248 break; 1249 default: 1250 rc->map_name = RC_MAP_RC6_MCE; 1251 } 1252 if (mceusb_model[ir->model].rc_map) 1253 rc->map_name = mceusb_model[ir->model].rc_map; 1254 1255 ret = rc_register_device(rc); 1256 if (ret < 0) { 1257 dev_err(dev, "remote dev registration failed"); 1258 goto out; 1259 } 1260 1261 return rc; 1262 1263 out: 1264 rc_free_device(rc); 1265 return NULL; 1266 } 1267 1268 static int mceusb_dev_probe(struct usb_interface *intf, 1269 const struct usb_device_id *id) 1270 { 1271 struct usb_device *dev = interface_to_usbdev(intf); 1272 struct usb_host_interface *idesc; 1273 struct usb_endpoint_descriptor *ep = NULL; 1274 struct usb_endpoint_descriptor *ep_in = NULL; 1275 struct usb_endpoint_descriptor *ep_out = NULL; 1276 struct mceusb_dev *ir = NULL; 1277 int pipe, maxp, i; 1278 char buf[63], name[128] = ""; 1279 enum mceusb_model_type model = id->driver_info; 1280 bool is_gen3; 1281 bool is_microsoft_gen1; 1282 bool tx_mask_normal; 1283 int ir_intfnum; 1284 1285 dev_dbg(&intf->dev, "%s called", __func__); 1286 1287 idesc = intf->cur_altsetting; 1288 1289 is_gen3 = mceusb_model[model].mce_gen3; 1290 is_microsoft_gen1 = mceusb_model[model].mce_gen1; 1291 tx_mask_normal = mceusb_model[model].tx_mask_normal; 1292 ir_intfnum = mceusb_model[model].ir_intfnum; 1293 1294 /* There are multi-function devices with non-IR interfaces */ 1295 if (idesc->desc.bInterfaceNumber != ir_intfnum) 1296 return -ENODEV; 1297 1298 /* step through the endpoints to find first bulk in and out endpoint */ 1299 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) { 1300 ep = &idesc->endpoint[i].desc; 1301 1302 if (ep_in == NULL) { 1303 if (usb_endpoint_is_bulk_in(ep)) { 1304 ep_in = ep; 1305 dev_dbg(&intf->dev, "acceptable bulk inbound endpoint found\n"); 1306 } else if (usb_endpoint_is_int_in(ep)) { 1307 ep_in = ep; 1308 ep_in->bInterval = 1; 1309 dev_dbg(&intf->dev, "acceptable interrupt inbound endpoint found\n"); 1310 } 1311 } 1312 1313 if (ep_out == NULL) { 1314 if (usb_endpoint_is_bulk_out(ep)) { 1315 ep_out = ep; 1316 dev_dbg(&intf->dev, "acceptable bulk outbound endpoint found\n"); 1317 } else if (usb_endpoint_is_int_out(ep)) { 1318 ep_out = ep; 1319 ep_out->bInterval = 1; 1320 dev_dbg(&intf->dev, "acceptable interrupt outbound endpoint found\n"); 1321 } 1322 } 1323 } 1324 if (ep_in == NULL) { 1325 dev_dbg(&intf->dev, "inbound and/or endpoint not found"); 1326 return -ENODEV; 1327 } 1328 1329 if (usb_endpoint_xfer_int(ep_in)) 1330 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress); 1331 else 1332 pipe = usb_rcvbulkpipe(dev, ep_in->bEndpointAddress); 1333 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 1334 1335 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL); 1336 if (!ir) 1337 goto mem_alloc_fail; 1338 1339 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in); 1340 if (!ir->buf_in) 1341 goto buf_in_alloc_fail; 1342 1343 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL); 1344 if (!ir->urb_in) 1345 goto urb_in_alloc_fail; 1346 1347 ir->usbdev = usb_get_dev(dev); 1348 ir->dev = &intf->dev; 1349 ir->len_in = maxp; 1350 ir->flags.microsoft_gen1 = is_microsoft_gen1; 1351 ir->flags.tx_mask_normal = tx_mask_normal; 1352 ir->flags.no_tx = mceusb_model[model].no_tx; 1353 ir->model = model; 1354 1355 /* Saving usb interface data for use by the transmitter routine */ 1356 ir->usb_ep_out = ep_out; 1357 1358 if (dev->descriptor.iManufacturer 1359 && usb_string(dev, dev->descriptor.iManufacturer, 1360 buf, sizeof(buf)) > 0) 1361 strlcpy(name, buf, sizeof(name)); 1362 if (dev->descriptor.iProduct 1363 && usb_string(dev, dev->descriptor.iProduct, 1364 buf, sizeof(buf)) > 0) 1365 snprintf(name + strlen(name), sizeof(name) - strlen(name), 1366 " %s", buf); 1367 1368 ir->rc = mceusb_init_rc_dev(ir); 1369 if (!ir->rc) 1370 goto rc_dev_fail; 1371 1372 /* wire up inbound data handler */ 1373 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp, 1374 mceusb_dev_recv, ir, ep_in->bInterval); 1375 ir->urb_in->transfer_dma = ir->dma_in; 1376 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 1377 1378 /* flush buffers on the device */ 1379 dev_dbg(&intf->dev, "Flushing receive buffers\n"); 1380 mce_flush_rx_buffer(ir, maxp); 1381 1382 /* figure out which firmware/emulator version this hardware has */ 1383 mceusb_get_emulator_version(ir); 1384 1385 /* initialize device */ 1386 if (ir->flags.microsoft_gen1) 1387 mceusb_gen1_init(ir); 1388 else if (!is_gen3) 1389 mceusb_gen2_init(ir); 1390 1391 mceusb_get_parameters(ir); 1392 1393 mceusb_flash_led(ir); 1394 1395 if (!ir->flags.no_tx) 1396 mceusb_set_tx_mask(ir->rc, MCE_DEFAULT_TX_MASK); 1397 1398 usb_set_intfdata(intf, ir); 1399 1400 /* enable wake via this device */ 1401 device_set_wakeup_capable(ir->dev, true); 1402 device_set_wakeup_enable(ir->dev, true); 1403 1404 dev_info(&intf->dev, "Registered %s with mce emulator interface version %x", 1405 name, ir->emver); 1406 dev_info(&intf->dev, "%x tx ports (0x%x cabled) and %x rx sensors (0x%x active)", 1407 ir->num_txports, ir->txports_cabled, 1408 ir->num_rxports, ir->rxports_active); 1409 1410 return 0; 1411 1412 /* Error-handling path */ 1413 rc_dev_fail: 1414 usb_put_dev(ir->usbdev); 1415 usb_free_urb(ir->urb_in); 1416 urb_in_alloc_fail: 1417 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in); 1418 buf_in_alloc_fail: 1419 kfree(ir); 1420 mem_alloc_fail: 1421 dev_err(&intf->dev, "%s: device setup failed!", __func__); 1422 1423 return -ENOMEM; 1424 } 1425 1426 1427 static void mceusb_dev_disconnect(struct usb_interface *intf) 1428 { 1429 struct usb_device *dev = interface_to_usbdev(intf); 1430 struct mceusb_dev *ir = usb_get_intfdata(intf); 1431 1432 usb_set_intfdata(intf, NULL); 1433 1434 if (!ir) 1435 return; 1436 1437 ir->usbdev = NULL; 1438 rc_unregister_device(ir->rc); 1439 usb_kill_urb(ir->urb_in); 1440 usb_free_urb(ir->urb_in); 1441 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in); 1442 usb_put_dev(dev); 1443 1444 kfree(ir); 1445 } 1446 1447 static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message) 1448 { 1449 struct mceusb_dev *ir = usb_get_intfdata(intf); 1450 dev_info(ir->dev, "suspend"); 1451 usb_kill_urb(ir->urb_in); 1452 return 0; 1453 } 1454 1455 static int mceusb_dev_resume(struct usb_interface *intf) 1456 { 1457 struct mceusb_dev *ir = usb_get_intfdata(intf); 1458 dev_info(ir->dev, "resume"); 1459 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC)) 1460 return -EIO; 1461 return 0; 1462 } 1463 1464 static struct usb_driver mceusb_dev_driver = { 1465 .name = DRIVER_NAME, 1466 .probe = mceusb_dev_probe, 1467 .disconnect = mceusb_dev_disconnect, 1468 .suspend = mceusb_dev_suspend, 1469 .resume = mceusb_dev_resume, 1470 .reset_resume = mceusb_dev_resume, 1471 .id_table = mceusb_dev_table 1472 }; 1473 1474 module_usb_driver(mceusb_dev_driver); 1475 1476 MODULE_DESCRIPTION(DRIVER_DESC); 1477 MODULE_AUTHOR(DRIVER_AUTHOR); 1478 MODULE_LICENSE("GPL"); 1479 MODULE_DEVICE_TABLE(usb, mceusb_dev_table); 1480