mceusb.c revision ab1072eba9a635511279c72150b35c1cf95ceda1
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 <linux/pm_wakeup.h> 41#include <media/rc-core.h> 42 43#define DRIVER_VERSION "1.91" 44#define DRIVER_AUTHOR "Jarod Wilson <jarod@wilsonet.com>" 45#define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \ 46 "device driver" 47#define DRIVER_NAME "mceusb" 48 49#define USB_BUFLEN 32 /* USB reception buffer length */ 50#define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */ 51#define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */ 52 53/* MCE constants */ 54#define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */ 55#define MCE_TIME_UNIT 50 /* Approx 50us resolution */ 56#define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */ 57#define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */ 58#define MCE_IRDATA_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */ 59#define MCE_IRDATA_TRAILER 0x80 /* End of IR data */ 60#define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */ 61#define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */ 62#define MCE_DEFAULT_TX_MASK 0x03 /* Vals: TX1=0x01, TX2=0x02, ALL=0x03 */ 63#define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */ 64#define MCE_PULSE_MASK 0x7f /* Pulse mask */ 65#define MCE_MAX_PULSE_LENGTH 0x7f /* Longest transmittable pulse symbol */ 66 67/* 68 * The interface between the host and the IR hardware is command-response 69 * based. All commands and responses have a consistent format, where a lead 70 * byte always identifies the type of data following it. The lead byte has 71 * a port value in the 3 highest bits and a length value in the 5 lowest 72 * bits. 73 * 74 * The length field is overloaded, with a value of 11111 indicating that the 75 * following byte is a command or response code, and the length of the entire 76 * message is determined by the code. If the length field is not 11111, then 77 * it specifies the number of bytes of port data that follow. 78 */ 79#define MCE_CMD 0x1f 80#define MCE_PORT_IR 0x4 /* (0x4 << 5) | MCE_CMD = 0x9f */ 81#define MCE_PORT_SYS 0x7 /* (0x7 << 5) | MCE_CMD = 0xff */ 82#define MCE_PORT_SER 0x6 /* 0xc0 thru 0xdf flush & 0x1f bytes */ 83#define MCE_PORT_MASK 0xe0 /* Mask out command bits */ 84 85/* Command port headers */ 86#define MCE_CMD_PORT_IR 0x9f /* IR-related cmd/rsp */ 87#define MCE_CMD_PORT_SYS 0xff /* System (non-IR) device cmd/rsp */ 88 89/* Commands that set device state (2-4 bytes in length) */ 90#define MCE_CMD_RESET 0xfe /* Reset device, 2 bytes */ 91#define MCE_CMD_RESUME 0xaa /* Resume device after error, 2 bytes */ 92#define MCE_CMD_SETIRCFS 0x06 /* Set tx carrier, 4 bytes */ 93#define MCE_CMD_SETIRTIMEOUT 0x0c /* Set timeout, 4 bytes */ 94#define MCE_CMD_SETIRTXPORTS 0x08 /* Set tx ports, 3 bytes */ 95#define MCE_CMD_SETIRRXPORTEN 0x14 /* Set rx ports, 3 bytes */ 96#define MCE_CMD_FLASHLED 0x23 /* Flash receiver LED, 2 bytes */ 97 98/* Commands that query device state (all 2 bytes, unless noted) */ 99#define MCE_CMD_GETIRCFS 0x07 /* Get carrier */ 100#define MCE_CMD_GETIRTIMEOUT 0x0d /* Get timeout */ 101#define MCE_CMD_GETIRTXPORTS 0x13 /* Get tx ports */ 102#define MCE_CMD_GETIRRXPORTEN 0x15 /* Get rx ports */ 103#define MCE_CMD_GETPORTSTATUS 0x11 /* Get tx port status, 3 bytes */ 104#define MCE_CMD_GETIRNUMPORTS 0x16 /* Get number of ports */ 105#define MCE_CMD_GETWAKESOURCE 0x17 /* Get wake source */ 106#define MCE_CMD_GETEMVER 0x22 /* Get emulator interface version */ 107#define MCE_CMD_GETDEVDETAILS 0x21 /* Get device details (em ver2 only) */ 108#define MCE_CMD_GETWAKESUPPORT 0x20 /* Get wake details (em ver2 only) */ 109#define MCE_CMD_GETWAKEVERSION 0x18 /* Get wake pattern (em ver2 only) */ 110 111/* Misc commands */ 112#define MCE_CMD_NOP 0xff /* No operation */ 113 114/* Responses to commands (non-error cases) */ 115#define MCE_RSP_EQIRCFS 0x06 /* tx carrier, 4 bytes */ 116#define MCE_RSP_EQIRTIMEOUT 0x0c /* rx timeout, 4 bytes */ 117#define MCE_RSP_GETWAKESOURCE 0x17 /* wake source, 3 bytes */ 118#define MCE_RSP_EQIRTXPORTS 0x08 /* tx port mask, 3 bytes */ 119#define MCE_RSP_EQIRRXPORTEN 0x14 /* rx port mask, 3 bytes */ 120#define MCE_RSP_GETPORTSTATUS 0x11 /* tx port status, 7 bytes */ 121#define MCE_RSP_EQIRRXCFCNT 0x15 /* rx carrier count, 4 bytes */ 122#define MCE_RSP_EQIRNUMPORTS 0x16 /* number of ports, 4 bytes */ 123#define MCE_RSP_EQWAKESUPPORT 0x20 /* wake capabilities, 3 bytes */ 124#define MCE_RSP_EQWAKEVERSION 0x18 /* wake pattern details, 6 bytes */ 125#define MCE_RSP_EQDEVDETAILS 0x21 /* device capabilities, 3 bytes */ 126#define MCE_RSP_EQEMVER 0x22 /* emulator interface ver, 3 bytes */ 127#define MCE_RSP_FLASHLED 0x23 /* success flashing LED, 2 bytes */ 128 129/* Responses to error cases, must send MCE_CMD_RESUME to clear them */ 130#define MCE_RSP_CMD_ILLEGAL 0xfe /* illegal command for port, 2 bytes */ 131#define MCE_RSP_TX_TIMEOUT 0x81 /* tx timed out, 2 bytes */ 132 133/* Misc commands/responses not defined in the MCE remote/transceiver spec */ 134#define MCE_CMD_SIG_END 0x01 /* End of signal */ 135#define MCE_CMD_PING 0x03 /* Ping device */ 136#define MCE_CMD_UNKNOWN 0x04 /* Unknown */ 137#define MCE_CMD_UNKNOWN2 0x05 /* Unknown */ 138#define MCE_CMD_UNKNOWN3 0x09 /* Unknown */ 139#define MCE_CMD_UNKNOWN4 0x0a /* Unknown */ 140#define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */ 141#define MCE_CMD_UNKNOWN5 0x0e /* Unknown */ 142#define MCE_CMD_UNKNOWN6 0x0f /* Unknown */ 143#define MCE_CMD_UNKNOWN8 0x19 /* Unknown */ 144#define MCE_CMD_UNKNOWN9 0x1b /* Unknown */ 145#define MCE_CMD_NULL 0x00 /* These show up various places... */ 146 147/* if buf[i] & MCE_PORT_MASK == 0x80 and buf[i] != MCE_CMD_PORT_IR, 148 * then we're looking at a raw IR data sample */ 149#define MCE_COMMAND_IRDATA 0x80 150#define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */ 151 152/* module parameters */ 153#ifdef CONFIG_USB_DEBUG 154static int debug = 1; 155#else 156static int debug; 157#endif 158 159#define mce_dbg(dev, fmt, ...) \ 160 do { \ 161 if (debug) \ 162 dev_info(dev, fmt, ## __VA_ARGS__); \ 163 } while (0) 164 165/* general constants */ 166#define SEND_FLAG_IN_PROGRESS 1 167#define SEND_FLAG_COMPLETE 2 168#define RECV_FLAG_IN_PROGRESS 3 169#define RECV_FLAG_COMPLETE 4 170 171#define MCEUSB_RX 1 172#define MCEUSB_TX 2 173 174#define VENDOR_PHILIPS 0x0471 175#define VENDOR_SMK 0x0609 176#define VENDOR_TATUNG 0x1460 177#define VENDOR_GATEWAY 0x107b 178#define VENDOR_SHUTTLE 0x1308 179#define VENDOR_SHUTTLE2 0x051c 180#define VENDOR_MITSUMI 0x03ee 181#define VENDOR_TOPSEED 0x1784 182#define VENDOR_RICAVISION 0x179d 183#define VENDOR_ITRON 0x195d 184#define VENDOR_FIC 0x1509 185#define VENDOR_LG 0x043e 186#define VENDOR_MICROSOFT 0x045e 187#define VENDOR_FORMOSA 0x147a 188#define VENDOR_FINTEK 0x1934 189#define VENDOR_PINNACLE 0x2304 190#define VENDOR_ECS 0x1019 191#define VENDOR_WISTRON 0x0fb8 192#define VENDOR_COMPRO 0x185b 193#define VENDOR_NORTHSTAR 0x04eb 194#define VENDOR_REALTEK 0x0bda 195#define VENDOR_TIVO 0x105a 196#define VENDOR_CONEXANT 0x0572 197 198enum mceusb_model_type { 199 MCE_GEN2 = 0, /* Most boards */ 200 MCE_GEN1, 201 MCE_GEN3, 202 MCE_GEN2_TX_INV, 203 POLARIS_EVK, 204 CX_HYBRID_TV, 205 MULTIFUNCTION, 206 TIVO_KIT, 207 MCE_GEN2_NO_TX, 208}; 209 210struct mceusb_model { 211 u32 mce_gen1:1; 212 u32 mce_gen2:1; 213 u32 mce_gen3:1; 214 u32 tx_mask_normal:1; 215 u32 no_tx:1; 216 217 int ir_intfnum; 218 219 const char *rc_map; /* Allow specify a per-board map */ 220 const char *name; /* per-board name */ 221}; 222 223static const struct mceusb_model mceusb_model[] = { 224 [MCE_GEN1] = { 225 .mce_gen1 = 1, 226 .tx_mask_normal = 1, 227 }, 228 [MCE_GEN2] = { 229 .mce_gen2 = 1, 230 }, 231 [MCE_GEN2_NO_TX] = { 232 .mce_gen2 = 1, 233 .no_tx = 1, 234 }, 235 [MCE_GEN2_TX_INV] = { 236 .mce_gen2 = 1, 237 .tx_mask_normal = 1, 238 }, 239 [MCE_GEN3] = { 240 .mce_gen3 = 1, 241 .tx_mask_normal = 1, 242 }, 243 [POLARIS_EVK] = { 244 /* 245 * In fact, the EVK is shipped without 246 * remotes, but we should have something handy, 247 * to allow testing it 248 */ 249 .rc_map = RC_MAP_HAUPPAUGE, 250 .name = "Conexant Hybrid TV (cx231xx) MCE IR", 251 }, 252 [CX_HYBRID_TV] = { 253 .no_tx = 1, /* tx isn't wired up at all */ 254 .name = "Conexant Hybrid TV (cx231xx) MCE IR", 255 }, 256 [MULTIFUNCTION] = { 257 .mce_gen2 = 1, 258 .ir_intfnum = 2, 259 }, 260 [TIVO_KIT] = { 261 .mce_gen2 = 1, 262 .rc_map = RC_MAP_TIVO, 263 }, 264}; 265 266static struct usb_device_id mceusb_dev_table[] = { 267 /* Original Microsoft MCE IR Transceiver (often HP-branded) */ 268 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d), 269 .driver_info = MCE_GEN1 }, 270 /* Philips Infrared Transceiver - Sahara branded */ 271 { USB_DEVICE(VENDOR_PHILIPS, 0x0608) }, 272 /* Philips Infrared Transceiver - HP branded */ 273 { USB_DEVICE(VENDOR_PHILIPS, 0x060c), 274 .driver_info = MCE_GEN2_TX_INV }, 275 /* Philips SRM5100 */ 276 { USB_DEVICE(VENDOR_PHILIPS, 0x060d) }, 277 /* Philips Infrared Transceiver - Omaura */ 278 { USB_DEVICE(VENDOR_PHILIPS, 0x060f) }, 279 /* Philips Infrared Transceiver - Spinel plus */ 280 { USB_DEVICE(VENDOR_PHILIPS, 0x0613) }, 281 /* Philips eHome Infrared Transceiver */ 282 { USB_DEVICE(VENDOR_PHILIPS, 0x0815) }, 283 /* Philips/Spinel plus IR transceiver for ASUS */ 284 { USB_DEVICE(VENDOR_PHILIPS, 0x206c) }, 285 /* Philips/Spinel plus IR transceiver for ASUS */ 286 { USB_DEVICE(VENDOR_PHILIPS, 0x2088) }, 287 /* Philips IR transceiver (Dell branded) */ 288 { USB_DEVICE(VENDOR_PHILIPS, 0x2093) }, 289 /* Realtek MCE IR Receiver and card reader */ 290 { USB_DEVICE(VENDOR_REALTEK, 0x0161), 291 .driver_info = MULTIFUNCTION }, 292 /* SMK/Toshiba G83C0004D410 */ 293 { USB_DEVICE(VENDOR_SMK, 0x031d), 294 .driver_info = MCE_GEN2_TX_INV }, 295 /* SMK eHome Infrared Transceiver (Sony VAIO) */ 296 { USB_DEVICE(VENDOR_SMK, 0x0322), 297 .driver_info = MCE_GEN2_TX_INV }, 298 /* bundled with Hauppauge PVR-150 */ 299 { USB_DEVICE(VENDOR_SMK, 0x0334), 300 .driver_info = MCE_GEN2_TX_INV }, 301 /* SMK eHome Infrared Transceiver */ 302 { USB_DEVICE(VENDOR_SMK, 0x0338) }, 303 /* SMK/I-O Data GV-MC7/RCKIT Receiver */ 304 { USB_DEVICE(VENDOR_SMK, 0x0353), 305 .driver_info = MCE_GEN2_NO_TX }, 306 /* Tatung eHome Infrared Transceiver */ 307 { USB_DEVICE(VENDOR_TATUNG, 0x9150) }, 308 /* Shuttle eHome Infrared Transceiver */ 309 { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) }, 310 /* Shuttle eHome Infrared Transceiver */ 311 { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) }, 312 /* Gateway eHome Infrared Transceiver */ 313 { USB_DEVICE(VENDOR_GATEWAY, 0x3009) }, 314 /* Mitsumi */ 315 { USB_DEVICE(VENDOR_MITSUMI, 0x2501) }, 316 /* Topseed eHome Infrared Transceiver */ 317 { USB_DEVICE(VENDOR_TOPSEED, 0x0001), 318 .driver_info = MCE_GEN2_TX_INV }, 319 /* Topseed HP eHome Infrared Transceiver */ 320 { USB_DEVICE(VENDOR_TOPSEED, 0x0006), 321 .driver_info = MCE_GEN2_TX_INV }, 322 /* Topseed eHome Infrared Transceiver */ 323 { USB_DEVICE(VENDOR_TOPSEED, 0x0007), 324 .driver_info = MCE_GEN2_TX_INV }, 325 /* Topseed eHome Infrared Transceiver */ 326 { USB_DEVICE(VENDOR_TOPSEED, 0x0008), 327 .driver_info = MCE_GEN3 }, 328 /* Topseed eHome Infrared Transceiver */ 329 { USB_DEVICE(VENDOR_TOPSEED, 0x000a), 330 .driver_info = MCE_GEN2_TX_INV }, 331 /* Topseed eHome Infrared Transceiver */ 332 { USB_DEVICE(VENDOR_TOPSEED, 0x0011), 333 .driver_info = MCE_GEN3 }, 334 /* Ricavision internal Infrared Transceiver */ 335 { USB_DEVICE(VENDOR_RICAVISION, 0x0010) }, 336 /* Itron ione Libra Q-11 */ 337 { USB_DEVICE(VENDOR_ITRON, 0x7002) }, 338 /* FIC eHome Infrared Transceiver */ 339 { USB_DEVICE(VENDOR_FIC, 0x9242) }, 340 /* LG eHome Infrared Transceiver */ 341 { USB_DEVICE(VENDOR_LG, 0x9803) }, 342 /* Microsoft MCE Infrared Transceiver */ 343 { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) }, 344 /* Formosa eHome Infrared Transceiver */ 345 { USB_DEVICE(VENDOR_FORMOSA, 0xe015) }, 346 /* Formosa21 / eHome Infrared Receiver */ 347 { USB_DEVICE(VENDOR_FORMOSA, 0xe016) }, 348 /* Formosa aim / Trust MCE Infrared Receiver */ 349 { USB_DEVICE(VENDOR_FORMOSA, 0xe017), 350 .driver_info = MCE_GEN2_NO_TX }, 351 /* Formosa Industrial Computing / Beanbag Emulation Device */ 352 { USB_DEVICE(VENDOR_FORMOSA, 0xe018) }, 353 /* Formosa21 / eHome Infrared Receiver */ 354 { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) }, 355 /* Formosa Industrial Computing AIM IR605/A */ 356 { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) }, 357 /* Formosa Industrial Computing */ 358 { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) }, 359 /* Fintek eHome Infrared Transceiver (HP branded) */ 360 { USB_DEVICE(VENDOR_FINTEK, 0x5168) }, 361 /* Fintek eHome Infrared Transceiver */ 362 { USB_DEVICE(VENDOR_FINTEK, 0x0602) }, 363 /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */ 364 { USB_DEVICE(VENDOR_FINTEK, 0x0702) }, 365 /* Pinnacle Remote Kit */ 366 { USB_DEVICE(VENDOR_PINNACLE, 0x0225), 367 .driver_info = MCE_GEN3 }, 368 /* Elitegroup Computer Systems IR */ 369 { USB_DEVICE(VENDOR_ECS, 0x0f38) }, 370 /* Wistron Corp. eHome Infrared Receiver */ 371 { USB_DEVICE(VENDOR_WISTRON, 0x0002) }, 372 /* Compro K100 */ 373 { USB_DEVICE(VENDOR_COMPRO, 0x3020) }, 374 /* Compro K100 v2 */ 375 { USB_DEVICE(VENDOR_COMPRO, 0x3082) }, 376 /* Northstar Systems, Inc. eHome Infrared Transceiver */ 377 { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) }, 378 /* TiVo PC IR Receiver */ 379 { USB_DEVICE(VENDOR_TIVO, 0x2000), 380 .driver_info = TIVO_KIT }, 381 /* Conexant Hybrid TV "Shelby" Polaris SDK */ 382 { USB_DEVICE(VENDOR_CONEXANT, 0x58a1), 383 .driver_info = POLARIS_EVK }, 384 /* Conexant Hybrid TV RDU253S Polaris */ 385 { USB_DEVICE(VENDOR_CONEXANT, 0x58a5), 386 .driver_info = CX_HYBRID_TV }, 387 /* Terminating entry */ 388 { } 389}; 390 391/* data structure for each usb transceiver */ 392struct mceusb_dev { 393 /* ir-core bits */ 394 struct rc_dev *rc; 395 396 /* optional features we can enable */ 397 bool carrier_report_enabled; 398 bool learning_enabled; 399 400 /* core device bits */ 401 struct device *dev; 402 403 /* usb */ 404 struct usb_device *usbdev; 405 struct urb *urb_in; 406 struct usb_endpoint_descriptor *usb_ep_in; 407 struct usb_endpoint_descriptor *usb_ep_out; 408 409 /* buffers and dma */ 410 unsigned char *buf_in; 411 unsigned int len_in; 412 dma_addr_t dma_in; 413 dma_addr_t dma_out; 414 415 enum { 416 CMD_HEADER = 0, 417 SUBCMD, 418 CMD_DATA, 419 PARSE_IRDATA, 420 } parser_state; 421 422 u8 cmd, rem; /* Remaining IR data bytes in packet */ 423 424 struct { 425 u32 connected:1; 426 u32 tx_mask_normal:1; 427 u32 microsoft_gen1:1; 428 u32 no_tx:1; 429 } flags; 430 431 /* transmit support */ 432 int send_flags; 433 u32 carrier; 434 unsigned char tx_mask; 435 436 char name[128]; 437 char phys[64]; 438 enum mceusb_model_type model; 439 440 bool need_reset; /* flag to issue a device resume cmd */ 441 u8 emver; /* emulator interface version */ 442}; 443 444/* MCE Device Command Strings, generally a port and command pair */ 445static char DEVICE_RESUME[] = {MCE_CMD_NULL, MCE_CMD_PORT_SYS, 446 MCE_CMD_RESUME}; 447static char GET_REVISION[] = {MCE_CMD_PORT_SYS, MCE_CMD_G_REVISION}; 448static char GET_EMVER[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETEMVER}; 449static char GET_WAKEVERSION[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETWAKEVERSION}; 450static char GET_UNKNOWN2[] = {MCE_CMD_PORT_IR, MCE_CMD_UNKNOWN2}; 451static char GET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRCFS}; 452static char GET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTIMEOUT}; 453static char GET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTXPORTS}; 454static char GET_RX_SENSOR[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRRXPORTEN}; 455/* sub in desired values in lower byte or bytes for full command */ 456/* FIXME: make use of these for transmit. 457static char SET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR, 458 MCE_CMD_SETIRCFS, 0x00, 0x00}; 459static char SET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_SETIRTXPORTS, 0x00}; 460static char SET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR, 461 MCE_CMD_SETIRTIMEOUT, 0x00, 0x00}; 462static char SET_RX_SENSOR[] = {MCE_CMD_PORT_IR, 463 MCE_RSP_EQIRRXPORTEN, 0x00}; 464*/ 465 466static int mceusb_cmdsize(u8 cmd, u8 subcmd) 467{ 468 int datasize = 0; 469 470 switch (cmd) { 471 case MCE_CMD_NULL: 472 if (subcmd == MCE_CMD_PORT_SYS) 473 datasize = 1; 474 break; 475 case MCE_CMD_PORT_SYS: 476 switch (subcmd) { 477 case MCE_RSP_EQWAKEVERSION: 478 datasize = 4; 479 break; 480 case MCE_CMD_G_REVISION: 481 datasize = 2; 482 break; 483 case MCE_RSP_EQWAKESUPPORT: 484 datasize = 1; 485 break; 486 } 487 case MCE_CMD_PORT_IR: 488 switch (subcmd) { 489 case MCE_CMD_UNKNOWN: 490 case MCE_RSP_EQIRCFS: 491 case MCE_RSP_EQIRTIMEOUT: 492 case MCE_RSP_EQIRRXCFCNT: 493 datasize = 2; 494 break; 495 case MCE_CMD_SIG_END: 496 case MCE_RSP_EQIRTXPORTS: 497 case MCE_RSP_EQIRRXPORTEN: 498 datasize = 1; 499 break; 500 } 501 } 502 return datasize; 503} 504 505static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf, 506 int offset, int len, bool out) 507{ 508 char codes[USB_BUFLEN * 3 + 1]; 509 char inout[9]; 510 u8 cmd, subcmd, data1, data2, data3, data4, data5; 511 struct device *dev = ir->dev; 512 int i, start, skip = 0; 513 514 if (!debug) 515 return; 516 517 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ 518 if (ir->flags.microsoft_gen1 && !out && !offset) 519 skip = 2; 520 521 if (len <= skip) 522 return; 523 524 for (i = 0; i < len && i < USB_BUFLEN; i++) 525 snprintf(codes + i * 3, 4, "%02x ", buf[i + offset] & 0xff); 526 527 dev_info(dev, "%sx data: %s(length=%d)\n", 528 (out ? "t" : "r"), codes, len); 529 530 if (out) 531 strcpy(inout, "Request\0"); 532 else 533 strcpy(inout, "Got\0"); 534 535 start = offset + skip; 536 cmd = buf[start] & 0xff; 537 subcmd = buf[start + 1] & 0xff; 538 data1 = buf[start + 2] & 0xff; 539 data2 = buf[start + 3] & 0xff; 540 data3 = buf[start + 4] & 0xff; 541 data4 = buf[start + 5] & 0xff; 542 data5 = buf[start + 6] & 0xff; 543 544 switch (cmd) { 545 case MCE_CMD_NULL: 546 if ((subcmd == MCE_CMD_PORT_SYS) && 547 (data1 == MCE_CMD_RESUME)) 548 dev_info(dev, "Device resume requested\n"); 549 else 550 dev_info(dev, "Unknown command 0x%02x 0x%02x\n", 551 cmd, subcmd); 552 break; 553 case MCE_CMD_PORT_SYS: 554 switch (subcmd) { 555 case MCE_RSP_EQEMVER: 556 if (!out) 557 dev_info(dev, "Emulator interface version %x\n", 558 data1); 559 break; 560 case MCE_CMD_G_REVISION: 561 if (len == 2) 562 dev_info(dev, "Get hw/sw rev?\n"); 563 else 564 dev_info(dev, "hw/sw rev 0x%02x 0x%02x " 565 "0x%02x 0x%02x\n", data1, data2, 566 buf[start + 4], buf[start + 5]); 567 break; 568 case MCE_CMD_RESUME: 569 dev_info(dev, "Device resume requested\n"); 570 break; 571 case MCE_RSP_CMD_ILLEGAL: 572 dev_info(dev, "Illegal PORT_SYS command\n"); 573 break; 574 case MCE_RSP_EQWAKEVERSION: 575 if (!out) 576 dev_info(dev, "Wake version, proto: 0x%02x, " 577 "payload: 0x%02x, address: 0x%02x, " 578 "version: 0x%02x\n", 579 data1, data2, data3, data4); 580 break; 581 case MCE_RSP_GETPORTSTATUS: 582 if (!out) 583 /* We use data1 + 1 here, to match hw labels */ 584 dev_info(dev, "TX port %d: blaster is%s connected\n", 585 data1 + 1, data4 ? " not" : ""); 586 break; 587 default: 588 dev_info(dev, "Unknown command 0x%02x 0x%02x\n", 589 cmd, subcmd); 590 break; 591 } 592 break; 593 case MCE_CMD_PORT_IR: 594 switch (subcmd) { 595 case MCE_CMD_SIG_END: 596 dev_info(dev, "End of signal\n"); 597 break; 598 case MCE_CMD_PING: 599 dev_info(dev, "Ping\n"); 600 break; 601 case MCE_CMD_UNKNOWN: 602 dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n", 603 data1, data2); 604 break; 605 case MCE_CMD_SETIRCFS: 606 dev_info(dev, "%s carrier mode and freq of " 607 "0x%02x 0x%02x\n", inout, data1, data2); 608 break; 609 case MCE_CMD_GETIRCFS: 610 dev_info(dev, "Get carrier mode and freq\n"); 611 break; 612 case MCE_RSP_EQIRTXPORTS: 613 dev_info(dev, "%s transmit blaster mask of 0x%02x\n", 614 inout, data1); 615 break; 616 case MCE_RSP_EQIRTIMEOUT: 617 /* value is in units of 50us, so x*50/1000 ms */ 618 dev_info(dev, "%s receive timeout of %d ms\n", 619 inout, 620 ((data1 << 8) | data2) * MCE_TIME_UNIT / 1000); 621 break; 622 case MCE_CMD_GETIRTIMEOUT: 623 dev_info(dev, "Get receive timeout\n"); 624 break; 625 case MCE_CMD_GETIRTXPORTS: 626 dev_info(dev, "Get transmit blaster mask\n"); 627 break; 628 case MCE_RSP_EQIRRXPORTEN: 629 dev_info(dev, "%s %s-range receive sensor in use\n", 630 inout, data1 == 0x02 ? "short" : "long"); 631 break; 632 case MCE_CMD_GETIRRXPORTEN: 633 /* aka MCE_RSP_EQIRRXCFCNT */ 634 if (out) 635 dev_info(dev, "Get receive sensor\n"); 636 else if (ir->learning_enabled) 637 dev_info(dev, "RX pulse count: %d\n", 638 ((data1 << 8) | data2)); 639 break; 640 case MCE_RSP_EQIRNUMPORTS: 641 if (out) 642 break; 643 dev_info(dev, "Num TX ports: %x, num RX ports: %x\n", 644 data1, data2); 645 break; 646 case MCE_RSP_CMD_ILLEGAL: 647 dev_info(dev, "Illegal PORT_IR command\n"); 648 break; 649 default: 650 dev_info(dev, "Unknown command 0x%02x 0x%02x\n", 651 cmd, subcmd); 652 break; 653 } 654 break; 655 default: 656 break; 657 } 658 659 if (cmd == MCE_IRDATA_TRAILER) 660 dev_info(dev, "End of raw IR data\n"); 661 else if ((cmd != MCE_CMD_PORT_IR) && 662 ((cmd & MCE_PORT_MASK) == MCE_COMMAND_IRDATA)) 663 dev_info(dev, "Raw IR data, %d pulse/space samples\n", ir->rem); 664} 665 666static void mce_async_callback(struct urb *urb, struct pt_regs *regs) 667{ 668 struct mceusb_dev *ir; 669 int len; 670 671 if (!urb) 672 return; 673 674 ir = urb->context; 675 if (ir) { 676 len = urb->actual_length; 677 678 mceusb_dev_printdata(ir, urb->transfer_buffer, 0, len, true); 679 } 680 681 /* the transfer buffer and urb were allocated in mce_request_packet */ 682 kfree(urb->transfer_buffer); 683 usb_free_urb(urb); 684} 685 686/* request incoming or send outgoing usb packet - used to initialize remote */ 687static void mce_request_packet(struct mceusb_dev *ir, unsigned char *data, 688 int size, int urb_type) 689{ 690 int res, pipe; 691 struct urb *async_urb; 692 struct device *dev = ir->dev; 693 unsigned char *async_buf; 694 695 if (urb_type == MCEUSB_TX) { 696 async_urb = usb_alloc_urb(0, GFP_KERNEL); 697 if (unlikely(!async_urb)) { 698 dev_err(dev, "Error, couldn't allocate urb!\n"); 699 return; 700 } 701 702 async_buf = kzalloc(size, GFP_KERNEL); 703 if (!async_buf) { 704 dev_err(dev, "Error, couldn't allocate buf!\n"); 705 usb_free_urb(async_urb); 706 return; 707 } 708 709 /* outbound data */ 710 pipe = usb_sndintpipe(ir->usbdev, 711 ir->usb_ep_out->bEndpointAddress); 712 usb_fill_int_urb(async_urb, ir->usbdev, pipe, 713 async_buf, size, (usb_complete_t)mce_async_callback, 714 ir, ir->usb_ep_out->bInterval); 715 memcpy(async_buf, data, size); 716 717 } else if (urb_type == MCEUSB_RX) { 718 /* standard request */ 719 async_urb = ir->urb_in; 720 ir->send_flags = RECV_FLAG_IN_PROGRESS; 721 722 } else { 723 dev_err(dev, "Error! Unknown urb type %d\n", urb_type); 724 return; 725 } 726 727 mce_dbg(dev, "receive request called (size=%#x)\n", size); 728 729 async_urb->transfer_buffer_length = size; 730 async_urb->dev = ir->usbdev; 731 732 res = usb_submit_urb(async_urb, GFP_ATOMIC); 733 if (res) { 734 mce_dbg(dev, "receive request FAILED! (res=%d)\n", res); 735 return; 736 } 737 mce_dbg(dev, "receive request complete (res=%d)\n", res); 738} 739 740static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size) 741{ 742 int rsize = sizeof(DEVICE_RESUME); 743 744 if (ir->need_reset) { 745 ir->need_reset = false; 746 mce_request_packet(ir, DEVICE_RESUME, rsize, MCEUSB_TX); 747 msleep(10); 748 } 749 750 mce_request_packet(ir, data, size, MCEUSB_TX); 751 msleep(10); 752} 753 754static void mce_flush_rx_buffer(struct mceusb_dev *ir, int size) 755{ 756 mce_request_packet(ir, NULL, size, MCEUSB_RX); 757} 758 759/* Send data out the IR blaster port(s) */ 760static int mceusb_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count) 761{ 762 struct mceusb_dev *ir = dev->priv; 763 int i, ret = 0; 764 int cmdcount = 0; 765 unsigned char *cmdbuf; /* MCE command buffer */ 766 long signal_duration = 0; /* Singnal length in us */ 767 struct timeval start_time, end_time; 768 769 do_gettimeofday(&start_time); 770 771 cmdbuf = kzalloc(sizeof(unsigned) * MCE_CMDBUF_SIZE, GFP_KERNEL); 772 if (!cmdbuf) 773 return -ENOMEM; 774 775 /* MCE tx init header */ 776 cmdbuf[cmdcount++] = MCE_CMD_PORT_IR; 777 cmdbuf[cmdcount++] = MCE_CMD_SETIRTXPORTS; 778 cmdbuf[cmdcount++] = ir->tx_mask; 779 780 /* Generate mce packet data */ 781 for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) { 782 signal_duration += txbuf[i]; 783 txbuf[i] = txbuf[i] / MCE_TIME_UNIT; 784 785 do { /* loop to support long pulses/spaces > 127*50us=6.35ms */ 786 787 /* Insert mce packet header every 4th entry */ 788 if ((cmdcount < MCE_CMDBUF_SIZE) && 789 (cmdcount - MCE_TX_HEADER_LENGTH) % 790 MCE_CODE_LENGTH == 0) 791 cmdbuf[cmdcount++] = MCE_IRDATA_HEADER; 792 793 /* Insert mce packet data */ 794 if (cmdcount < MCE_CMDBUF_SIZE) 795 cmdbuf[cmdcount++] = 796 (txbuf[i] < MCE_PULSE_BIT ? 797 txbuf[i] : MCE_MAX_PULSE_LENGTH) | 798 (i & 1 ? 0x00 : MCE_PULSE_BIT); 799 else { 800 ret = -EINVAL; 801 goto out; 802 } 803 804 } while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) && 805 (txbuf[i] -= MCE_MAX_PULSE_LENGTH)); 806 } 807 808 /* Fix packet length in last header */ 809 cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] = 810 MCE_COMMAND_IRDATA + (cmdcount - MCE_TX_HEADER_LENGTH) % 811 MCE_CODE_LENGTH - 1; 812 813 /* Check if we have room for the empty packet at the end */ 814 if (cmdcount >= MCE_CMDBUF_SIZE) { 815 ret = -EINVAL; 816 goto out; 817 } 818 819 /* All mce commands end with an empty packet (0x80) */ 820 cmdbuf[cmdcount++] = MCE_IRDATA_TRAILER; 821 822 /* Transmit the command to the mce device */ 823 mce_async_out(ir, cmdbuf, cmdcount); 824 825 /* 826 * The lircd gap calculation expects the write function to 827 * wait the time it takes for the ircommand to be sent before 828 * it returns. 829 */ 830 do_gettimeofday(&end_time); 831 signal_duration -= (end_time.tv_usec - start_time.tv_usec) + 832 (end_time.tv_sec - start_time.tv_sec) * 1000000; 833 834 /* delay with the closest number of ticks */ 835 set_current_state(TASK_INTERRUPTIBLE); 836 schedule_timeout(usecs_to_jiffies(signal_duration)); 837 838out: 839 kfree(cmdbuf); 840 return ret ? ret : count; 841} 842 843/* Sets active IR outputs -- mce devices typically have two */ 844static int mceusb_set_tx_mask(struct rc_dev *dev, u32 mask) 845{ 846 struct mceusb_dev *ir = dev->priv; 847 848 if (ir->flags.tx_mask_normal) 849 ir->tx_mask = mask; 850 else 851 ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ? 852 mask ^ MCE_DEFAULT_TX_MASK : mask) << 1; 853 854 return 0; 855} 856 857/* Sets the send carrier frequency and mode */ 858static int mceusb_set_tx_carrier(struct rc_dev *dev, u32 carrier) 859{ 860 struct mceusb_dev *ir = dev->priv; 861 int clk = 10000000; 862 int prescaler = 0, divisor = 0; 863 unsigned char cmdbuf[4] = { MCE_CMD_PORT_IR, 864 MCE_CMD_SETIRCFS, 0x00, 0x00 }; 865 866 /* Carrier has changed */ 867 if (ir->carrier != carrier) { 868 869 if (carrier == 0) { 870 ir->carrier = carrier; 871 cmdbuf[2] = MCE_CMD_SIG_END; 872 cmdbuf[3] = MCE_IRDATA_TRAILER; 873 mce_dbg(ir->dev, "%s: disabling carrier " 874 "modulation\n", __func__); 875 mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); 876 return carrier; 877 } 878 879 for (prescaler = 0; prescaler < 4; ++prescaler) { 880 divisor = (clk >> (2 * prescaler)) / carrier; 881 if (divisor <= 0xff) { 882 ir->carrier = carrier; 883 cmdbuf[2] = prescaler; 884 cmdbuf[3] = divisor; 885 mce_dbg(ir->dev, "%s: requesting %u HZ " 886 "carrier\n", __func__, carrier); 887 888 /* Transmit new carrier to mce device */ 889 mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); 890 return carrier; 891 } 892 } 893 894 return -EINVAL; 895 896 } 897 898 return carrier; 899} 900 901/* 902 * We don't do anything but print debug spew for many of the command bits 903 * we receive from the hardware, but some of them are useful information 904 * we want to store so that we can use them. 905 */ 906static void mceusb_handle_command(struct mceusb_dev *ir, int index) 907{ 908 u8 hi = ir->buf_in[index + 1] & 0xff; 909 u8 lo = ir->buf_in[index + 2] & 0xff; 910 911 switch (ir->buf_in[index]) { 912 /* 2-byte return value commands */ 913 case MCE_RSP_EQIRTIMEOUT: 914 ir->rc->timeout = US_TO_NS((hi << 8 | lo) * MCE_TIME_UNIT); 915 break; 916 917 /* 1-byte return value commands */ 918 case MCE_RSP_EQEMVER: 919 ir->emver = hi; 920 break; 921 case MCE_RSP_EQIRTXPORTS: 922 ir->tx_mask = hi; 923 break; 924 case MCE_RSP_EQIRRXPORTEN: 925 ir->learning_enabled = ((hi & 0x02) == 0x02); 926 break; 927 case MCE_RSP_CMD_ILLEGAL: 928 ir->need_reset = true; 929 break; 930 default: 931 break; 932 } 933} 934 935static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len) 936{ 937 DEFINE_IR_RAW_EVENT(rawir); 938 int i = 0; 939 940 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ 941 if (ir->flags.microsoft_gen1) 942 i = 2; 943 944 /* if there's no data, just return now */ 945 if (buf_len <= i) 946 return; 947 948 for (; i < buf_len; i++) { 949 switch (ir->parser_state) { 950 case SUBCMD: 951 ir->rem = mceusb_cmdsize(ir->cmd, ir->buf_in[i]); 952 mceusb_dev_printdata(ir, ir->buf_in, i - 1, 953 ir->rem + 2, false); 954 mceusb_handle_command(ir, i); 955 ir->parser_state = CMD_DATA; 956 break; 957 case PARSE_IRDATA: 958 ir->rem--; 959 init_ir_raw_event(&rawir); 960 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0); 961 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK) 962 * US_TO_NS(MCE_TIME_UNIT); 963 964 mce_dbg(ir->dev, "Storing %s with duration %d\n", 965 rawir.pulse ? "pulse" : "space", 966 rawir.duration); 967 968 ir_raw_event_store_with_filter(ir->rc, &rawir); 969 break; 970 case CMD_DATA: 971 ir->rem--; 972 break; 973 case CMD_HEADER: 974 /* decode mce packets of the form (84),AA,BB,CC,DD */ 975 /* IR data packets can span USB messages - rem */ 976 ir->cmd = ir->buf_in[i]; 977 if ((ir->cmd == MCE_CMD_PORT_IR) || 978 ((ir->cmd & MCE_PORT_MASK) != 979 MCE_COMMAND_IRDATA)) { 980 ir->parser_state = SUBCMD; 981 continue; 982 } 983 ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK); 984 mceusb_dev_printdata(ir, ir->buf_in, 985 i, ir->rem + 1, false); 986 if (ir->rem) 987 ir->parser_state = PARSE_IRDATA; 988 else 989 ir_raw_event_reset(ir->rc); 990 break; 991 } 992 993 if (ir->parser_state != CMD_HEADER && !ir->rem) 994 ir->parser_state = CMD_HEADER; 995 } 996 mce_dbg(ir->dev, "processed IR data, calling ir_raw_event_handle\n"); 997 ir_raw_event_handle(ir->rc); 998} 999 1000static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs) 1001{ 1002 struct mceusb_dev *ir; 1003 int buf_len; 1004 1005 if (!urb) 1006 return; 1007 1008 ir = urb->context; 1009 if (!ir) { 1010 usb_unlink_urb(urb); 1011 return; 1012 } 1013 1014 buf_len = urb->actual_length; 1015 1016 if (ir->send_flags == RECV_FLAG_IN_PROGRESS) { 1017 ir->send_flags = SEND_FLAG_COMPLETE; 1018 mce_dbg(ir->dev, "setup answer received %d bytes\n", 1019 buf_len); 1020 } 1021 1022 switch (urb->status) { 1023 /* success */ 1024 case 0: 1025 mceusb_process_ir_data(ir, buf_len); 1026 break; 1027 1028 case -ECONNRESET: 1029 case -ENOENT: 1030 case -ESHUTDOWN: 1031 usb_unlink_urb(urb); 1032 return; 1033 1034 case -EPIPE: 1035 default: 1036 mce_dbg(ir->dev, "Error: urb status = %d\n", urb->status); 1037 break; 1038 } 1039 1040 usb_submit_urb(urb, GFP_ATOMIC); 1041} 1042 1043static void mceusb_get_emulator_version(struct mceusb_dev *ir) 1044{ 1045 /* If we get no reply or an illegal command reply, its ver 1, says MS */ 1046 ir->emver = 1; 1047 mce_async_out(ir, GET_EMVER, sizeof(GET_EMVER)); 1048} 1049 1050static void mceusb_gen1_init(struct mceusb_dev *ir) 1051{ 1052 int ret; 1053 struct device *dev = ir->dev; 1054 char *data; 1055 1056 data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL); 1057 if (!data) { 1058 dev_err(dev, "%s: memory allocation failed!\n", __func__); 1059 return; 1060 } 1061 1062 /* 1063 * This is a strange one. Windows issues a set address to the device 1064 * on the receive control pipe and expect a certain value pair back 1065 */ 1066 ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0), 1067 USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0, 1068 data, USB_CTRL_MSG_SZ, HZ * 3); 1069 mce_dbg(dev, "%s - ret = %d\n", __func__, ret); 1070 mce_dbg(dev, "%s - data[0] = %d, data[1] = %d\n", 1071 __func__, data[0], data[1]); 1072 1073 /* set feature: bit rate 38400 bps */ 1074 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 1075 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR, 1076 0xc04e, 0x0000, NULL, 0, HZ * 3); 1077 1078 mce_dbg(dev, "%s - ret = %d\n", __func__, ret); 1079 1080 /* bRequest 4: set char length to 8 bits */ 1081 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 1082 4, USB_TYPE_VENDOR, 1083 0x0808, 0x0000, NULL, 0, HZ * 3); 1084 mce_dbg(dev, "%s - retB = %d\n", __func__, ret); 1085 1086 /* bRequest 2: set handshaking to use DTR/DSR */ 1087 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 1088 2, USB_TYPE_VENDOR, 1089 0x0000, 0x0100, NULL, 0, HZ * 3); 1090 mce_dbg(dev, "%s - retC = %d\n", __func__, ret); 1091 1092 /* device resume */ 1093 mce_async_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME)); 1094 1095 /* get hw/sw revision? */ 1096 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION)); 1097 1098 kfree(data); 1099}; 1100 1101static void mceusb_gen2_init(struct mceusb_dev *ir) 1102{ 1103 /* device resume */ 1104 mce_async_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME)); 1105 1106 /* get hw/sw revision? */ 1107 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION)); 1108 1109 /* get wake version (protocol, key, address) */ 1110 mce_async_out(ir, GET_WAKEVERSION, sizeof(GET_WAKEVERSION)); 1111 1112 /* unknown what this one actually returns... */ 1113 mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2)); 1114} 1115 1116static void mceusb_get_parameters(struct mceusb_dev *ir) 1117{ 1118 /* get the carrier and frequency */ 1119 mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ)); 1120 1121 if (!ir->flags.no_tx) 1122 /* get the transmitter bitmask */ 1123 mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK)); 1124 1125 /* get receiver timeout value */ 1126 mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT)); 1127 1128 /* get receiver sensor setting */ 1129 mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR)); 1130} 1131 1132static struct rc_dev *mceusb_init_rc_dev(struct mceusb_dev *ir) 1133{ 1134 struct device *dev = ir->dev; 1135 struct rc_dev *rc; 1136 int ret; 1137 1138 rc = rc_allocate_device(); 1139 if (!rc) { 1140 dev_err(dev, "remote dev allocation failed\n"); 1141 goto out; 1142 } 1143 1144 snprintf(ir->name, sizeof(ir->name), "%s (%04x:%04x)", 1145 mceusb_model[ir->model].name ? 1146 mceusb_model[ir->model].name : 1147 "Media Center Ed. eHome Infrared Remote Transceiver", 1148 le16_to_cpu(ir->usbdev->descriptor.idVendor), 1149 le16_to_cpu(ir->usbdev->descriptor.idProduct)); 1150 1151 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys)); 1152 1153 rc->input_name = ir->name; 1154 rc->input_phys = ir->phys; 1155 usb_to_input_id(ir->usbdev, &rc->input_id); 1156 rc->dev.parent = dev; 1157 rc->priv = ir; 1158 rc->driver_type = RC_DRIVER_IR_RAW; 1159 rc->allowed_protos = RC_TYPE_ALL; 1160 rc->timeout = MS_TO_NS(100); 1161 if (!ir->flags.no_tx) { 1162 rc->s_tx_mask = mceusb_set_tx_mask; 1163 rc->s_tx_carrier = mceusb_set_tx_carrier; 1164 rc->tx_ir = mceusb_tx_ir; 1165 } 1166 rc->driver_name = DRIVER_NAME; 1167 rc->map_name = mceusb_model[ir->model].rc_map ? 1168 mceusb_model[ir->model].rc_map : RC_MAP_RC6_MCE; 1169 1170 ret = rc_register_device(rc); 1171 if (ret < 0) { 1172 dev_err(dev, "remote dev registration failed\n"); 1173 goto out; 1174 } 1175 1176 return rc; 1177 1178out: 1179 rc_free_device(rc); 1180 return NULL; 1181} 1182 1183static int __devinit mceusb_dev_probe(struct usb_interface *intf, 1184 const struct usb_device_id *id) 1185{ 1186 struct usb_device *dev = interface_to_usbdev(intf); 1187 struct usb_host_interface *idesc; 1188 struct usb_endpoint_descriptor *ep = NULL; 1189 struct usb_endpoint_descriptor *ep_in = NULL; 1190 struct usb_endpoint_descriptor *ep_out = NULL; 1191 struct mceusb_dev *ir = NULL; 1192 int pipe, maxp, i; 1193 char buf[63], name[128] = ""; 1194 enum mceusb_model_type model = id->driver_info; 1195 bool is_gen3; 1196 bool is_microsoft_gen1; 1197 bool tx_mask_normal; 1198 int ir_intfnum; 1199 1200 mce_dbg(&intf->dev, "%s called\n", __func__); 1201 1202 idesc = intf->cur_altsetting; 1203 1204 is_gen3 = mceusb_model[model].mce_gen3; 1205 is_microsoft_gen1 = mceusb_model[model].mce_gen1; 1206 tx_mask_normal = mceusb_model[model].tx_mask_normal; 1207 ir_intfnum = mceusb_model[model].ir_intfnum; 1208 1209 /* There are multi-function devices with non-IR interfaces */ 1210 if (idesc->desc.bInterfaceNumber != ir_intfnum) 1211 return -ENODEV; 1212 1213 /* step through the endpoints to find first bulk in and out endpoint */ 1214 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) { 1215 ep = &idesc->endpoint[i].desc; 1216 1217 if ((ep_in == NULL) 1218 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 1219 == USB_DIR_IN) 1220 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1221 == USB_ENDPOINT_XFER_BULK) 1222 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1223 == USB_ENDPOINT_XFER_INT))) { 1224 1225 ep_in = ep; 1226 ep_in->bmAttributes = USB_ENDPOINT_XFER_INT; 1227 ep_in->bInterval = 1; 1228 mce_dbg(&intf->dev, "acceptable inbound endpoint " 1229 "found\n"); 1230 } 1231 1232 if ((ep_out == NULL) 1233 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 1234 == USB_DIR_OUT) 1235 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1236 == USB_ENDPOINT_XFER_BULK) 1237 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1238 == USB_ENDPOINT_XFER_INT))) { 1239 1240 ep_out = ep; 1241 ep_out->bmAttributes = USB_ENDPOINT_XFER_INT; 1242 ep_out->bInterval = 1; 1243 mce_dbg(&intf->dev, "acceptable outbound endpoint " 1244 "found\n"); 1245 } 1246 } 1247 if (ep_in == NULL) { 1248 mce_dbg(&intf->dev, "inbound and/or endpoint not found\n"); 1249 return -ENODEV; 1250 } 1251 1252 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress); 1253 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 1254 1255 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL); 1256 if (!ir) 1257 goto mem_alloc_fail; 1258 1259 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in); 1260 if (!ir->buf_in) 1261 goto buf_in_alloc_fail; 1262 1263 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL); 1264 if (!ir->urb_in) 1265 goto urb_in_alloc_fail; 1266 1267 ir->usbdev = dev; 1268 ir->dev = &intf->dev; 1269 ir->len_in = maxp; 1270 ir->flags.microsoft_gen1 = is_microsoft_gen1; 1271 ir->flags.tx_mask_normal = tx_mask_normal; 1272 ir->flags.no_tx = mceusb_model[model].no_tx; 1273 ir->model = model; 1274 1275 /* Saving usb interface data for use by the transmitter routine */ 1276 ir->usb_ep_in = ep_in; 1277 ir->usb_ep_out = ep_out; 1278 1279 if (dev->descriptor.iManufacturer 1280 && usb_string(dev, dev->descriptor.iManufacturer, 1281 buf, sizeof(buf)) > 0) 1282 strlcpy(name, buf, sizeof(name)); 1283 if (dev->descriptor.iProduct 1284 && usb_string(dev, dev->descriptor.iProduct, 1285 buf, sizeof(buf)) > 0) 1286 snprintf(name + strlen(name), sizeof(name) - strlen(name), 1287 " %s", buf); 1288 1289 ir->rc = mceusb_init_rc_dev(ir); 1290 if (!ir->rc) 1291 goto rc_dev_fail; 1292 1293 /* wire up inbound data handler */ 1294 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, 1295 maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval); 1296 ir->urb_in->transfer_dma = ir->dma_in; 1297 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 1298 1299 /* flush buffers on the device */ 1300 mce_dbg(&intf->dev, "Flushing receive buffers\n"); 1301 mce_flush_rx_buffer(ir, maxp); 1302 1303 /* figure out which firmware/emulator version this hardware has */ 1304 mceusb_get_emulator_version(ir); 1305 1306 /* initialize device */ 1307 if (ir->flags.microsoft_gen1) 1308 mceusb_gen1_init(ir); 1309 else if (!is_gen3) 1310 mceusb_gen2_init(ir); 1311 1312 mceusb_get_parameters(ir); 1313 1314 if (!ir->flags.no_tx) 1315 mceusb_set_tx_mask(ir->rc, MCE_DEFAULT_TX_MASK); 1316 1317 usb_set_intfdata(intf, ir); 1318 1319 /* enable wake via this device */ 1320 device_set_wakeup_capable(ir->dev, true); 1321 device_set_wakeup_enable(ir->dev, true); 1322 1323 dev_info(&intf->dev, "Registered %s with mce emulator interface " 1324 "version %x\n", name, ir->emver); 1325 1326 return 0; 1327 1328 /* Error-handling path */ 1329rc_dev_fail: 1330 usb_free_urb(ir->urb_in); 1331urb_in_alloc_fail: 1332 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in); 1333buf_in_alloc_fail: 1334 kfree(ir); 1335mem_alloc_fail: 1336 dev_err(&intf->dev, "%s: device setup failed!\n", __func__); 1337 1338 return -ENOMEM; 1339} 1340 1341 1342static void __devexit mceusb_dev_disconnect(struct usb_interface *intf) 1343{ 1344 struct usb_device *dev = interface_to_usbdev(intf); 1345 struct mceusb_dev *ir = usb_get_intfdata(intf); 1346 1347 usb_set_intfdata(intf, NULL); 1348 1349 if (!ir) 1350 return; 1351 1352 ir->usbdev = NULL; 1353 rc_unregister_device(ir->rc); 1354 usb_kill_urb(ir->urb_in); 1355 usb_free_urb(ir->urb_in); 1356 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in); 1357 1358 kfree(ir); 1359} 1360 1361static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message) 1362{ 1363 struct mceusb_dev *ir = usb_get_intfdata(intf); 1364 dev_info(ir->dev, "suspend\n"); 1365 usb_kill_urb(ir->urb_in); 1366 return 0; 1367} 1368 1369static int mceusb_dev_resume(struct usb_interface *intf) 1370{ 1371 struct mceusb_dev *ir = usb_get_intfdata(intf); 1372 dev_info(ir->dev, "resume\n"); 1373 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC)) 1374 return -EIO; 1375 return 0; 1376} 1377 1378static struct usb_driver mceusb_dev_driver = { 1379 .name = DRIVER_NAME, 1380 .probe = mceusb_dev_probe, 1381 .disconnect = mceusb_dev_disconnect, 1382 .suspend = mceusb_dev_suspend, 1383 .resume = mceusb_dev_resume, 1384 .reset_resume = mceusb_dev_resume, 1385 .id_table = mceusb_dev_table 1386}; 1387 1388static int __init mceusb_dev_init(void) 1389{ 1390 int ret; 1391 1392 ret = usb_register(&mceusb_dev_driver); 1393 if (ret < 0) 1394 printk(KERN_ERR DRIVER_NAME 1395 ": usb register failed, result = %d\n", ret); 1396 1397 return ret; 1398} 1399 1400static void __exit mceusb_dev_exit(void) 1401{ 1402 usb_deregister(&mceusb_dev_driver); 1403} 1404 1405module_init(mceusb_dev_init); 1406module_exit(mceusb_dev_exit); 1407 1408MODULE_DESCRIPTION(DRIVER_DESC); 1409MODULE_AUTHOR(DRIVER_AUTHOR); 1410MODULE_LICENSE("GPL"); 1411MODULE_DEVICE_TABLE(usb, mceusb_dev_table); 1412 1413module_param(debug, bool, S_IRUGO | S_IWUSR); 1414MODULE_PARM_DESC(debug, "Debug enabled or not"); 1415