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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers4 *5 * Copyright (c) 2010-2011, Jarod Wilson <jarod@redhat.com>6 *7 * Based on the original lirc_mceusb and lirc_mceusb2 drivers, by Dan8 * Conti, Martin Blatter and Daniel Melander, the latter of which was9 * in turn also based on the lirc_atiusb driver by Paul Miller. The10 * two mce drivers were merged into one by Jarod Wilson, with transmit11 * support for the 1st-gen device added primarily by Patrick Calhoun,12 * with a bit of tweaks by Jarod. Debugging improvements and proper13 * support for what appears to be 3rd-gen hardware added by Jarod.14 * Initial port from lirc driver to ir-core drivery by Jarod, based15 * partially on a port to an earlier proposed IR infrastructure by16 * Jon Smirl, which included enhancements and simplifications to the17 * incoming IR buffer parsing routines.18 *19 * Updated in July of 2011 with the aid of Microsoft's official20 * remote/transceiver requirements and specification document, found at21 * download.microsoft.com, title22 * Windows-Media-Center-RC-IR-Collection-Green-Button-Specification-03-08-2011-V2.pdf23 */24 25#include <linux/device.h>26#include <linux/module.h>27#include <linux/slab.h>28#include <linux/workqueue.h>29#include <linux/usb.h>30#include <linux/usb/input.h>31#include <linux/pm_wakeup.h>32#include <media/rc-core.h>33 34#define DRIVER_VERSION "1.95"35#define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>"36#define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \37 "device driver"38#define DRIVER_NAME "mceusb"39 40#define USB_TX_TIMEOUT 1000 /* in milliseconds */41#define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */42#define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */43 44/* MCE constants */45#define MCE_IRBUF_SIZE 128 /* TX IR buffer length */46#define MCE_TIME_UNIT 50 /* Approx 50us resolution */47#define MCE_PACKET_SIZE 31 /* Max length of packet (with header) */48#define MCE_IRDATA_HEADER (0x80 + MCE_PACKET_SIZE - 1)49 /* Actual format is 0x80 + num_bytes */50#define MCE_IRDATA_TRAILER 0x80 /* End of IR data */51#define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */52#define MCE_DEFAULT_TX_MASK 0x03 /* Vals: TX1=0x01, TX2=0x02, ALL=0x03 */53#define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */54#define MCE_PULSE_MASK 0x7f /* Pulse mask */55#define MCE_MAX_PULSE_LENGTH 0x7f /* Longest transmittable pulse symbol */56 57/*58 * The interface between the host and the IR hardware is command-response59 * based. All commands and responses have a consistent format, where a lead60 * byte always identifies the type of data following it. The lead byte has61 * a port value in the 3 highest bits and a length value in the 5 lowest62 * bits.63 *64 * The length field is overloaded, with a value of 11111 indicating that the65 * following byte is a command or response code, and the length of the entire66 * message is determined by the code. If the length field is not 11111, then67 * it specifies the number of bytes of port data that follow.68 */69#define MCE_CMD 0x1f70#define MCE_PORT_IR 0x4 /* (0x4 << 5) | MCE_CMD = 0x9f */71#define MCE_PORT_SYS 0x7 /* (0x7 << 5) | MCE_CMD = 0xff */72#define MCE_PORT_SER 0x6 /* 0xc0 through 0xdf flush & 0x1f bytes */73#define MCE_PORT_MASK 0xe0 /* Mask out command bits */74 75/* Command port headers */76#define MCE_CMD_PORT_IR 0x9f /* IR-related cmd/rsp */77#define MCE_CMD_PORT_SYS 0xff /* System (non-IR) device cmd/rsp */78 79/* Commands that set device state (2-4 bytes in length) */80#define MCE_CMD_RESET 0xfe /* Reset device, 2 bytes */81#define MCE_CMD_RESUME 0xaa /* Resume device after error, 2 bytes */82#define MCE_CMD_SETIRCFS 0x06 /* Set tx carrier, 4 bytes */83#define MCE_CMD_SETIRTIMEOUT 0x0c /* Set timeout, 4 bytes */84#define MCE_CMD_SETIRTXPORTS 0x08 /* Set tx ports, 3 bytes */85#define MCE_CMD_SETIRRXPORTEN 0x14 /* Set rx ports, 3 bytes */86#define MCE_CMD_FLASHLED 0x23 /* Flash receiver LED, 2 bytes */87 88/* Commands that query device state (all 2 bytes, unless noted) */89#define MCE_CMD_GETIRCFS 0x07 /* Get carrier */90#define MCE_CMD_GETIRTIMEOUT 0x0d /* Get timeout */91#define MCE_CMD_GETIRTXPORTS 0x13 /* Get tx ports */92#define MCE_CMD_GETIRRXPORTEN 0x15 /* Get rx ports */93#define MCE_CMD_GETPORTSTATUS 0x11 /* Get tx port status, 3 bytes */94#define MCE_CMD_GETIRNUMPORTS 0x16 /* Get number of ports */95#define MCE_CMD_GETWAKESOURCE 0x17 /* Get wake source */96#define MCE_CMD_GETEMVER 0x22 /* Get emulator interface version */97#define MCE_CMD_GETDEVDETAILS 0x21 /* Get device details (em ver2 only) */98#define MCE_CMD_GETWAKESUPPORT 0x20 /* Get wake details (em ver2 only) */99#define MCE_CMD_GETWAKEVERSION 0x18 /* Get wake pattern (em ver2 only) */100 101/* Misc commands */102#define MCE_CMD_NOP 0xff /* No operation */103 104/* Responses to commands (non-error cases) */105#define MCE_RSP_EQIRCFS 0x06 /* tx carrier, 4 bytes */106#define MCE_RSP_EQIRTIMEOUT 0x0c /* rx timeout, 4 bytes */107#define MCE_RSP_GETWAKESOURCE 0x17 /* wake source, 3 bytes */108#define MCE_RSP_EQIRTXPORTS 0x08 /* tx port mask, 3 bytes */109#define MCE_RSP_EQIRRXPORTEN 0x14 /* rx port mask, 3 bytes */110#define MCE_RSP_GETPORTSTATUS 0x11 /* tx port status, 7 bytes */111#define MCE_RSP_EQIRRXCFCNT 0x15 /* rx carrier count, 4 bytes */112#define MCE_RSP_EQIRNUMPORTS 0x16 /* number of ports, 4 bytes */113#define MCE_RSP_EQWAKESUPPORT 0x20 /* wake capabilities, 3 bytes */114#define MCE_RSP_EQWAKEVERSION 0x18 /* wake pattern details, 6 bytes */115#define MCE_RSP_EQDEVDETAILS 0x21 /* device capabilities, 3 bytes */116#define MCE_RSP_EQEMVER 0x22 /* emulator interface ver, 3 bytes */117#define MCE_RSP_FLASHLED 0x23 /* success flashing LED, 2 bytes */118 119/* Responses to error cases, must send MCE_CMD_RESUME to clear them */120#define MCE_RSP_CMD_ILLEGAL 0xfe /* illegal command for port, 2 bytes */121#define MCE_RSP_TX_TIMEOUT 0x81 /* tx timed out, 2 bytes */122 123/* Misc commands/responses not defined in the MCE remote/transceiver spec */124#define MCE_CMD_SIG_END 0x01 /* End of signal */125#define MCE_CMD_PING 0x03 /* Ping device */126#define MCE_CMD_UNKNOWN 0x04 /* Unknown */127#define MCE_CMD_UNKNOWN2 0x05 /* Unknown */128#define MCE_CMD_UNKNOWN3 0x09 /* Unknown */129#define MCE_CMD_UNKNOWN4 0x0a /* Unknown */130#define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */131#define MCE_CMD_UNKNOWN5 0x0e /* Unknown */132#define MCE_CMD_UNKNOWN6 0x0f /* Unknown */133#define MCE_CMD_UNKNOWN8 0x19 /* Unknown */134#define MCE_CMD_UNKNOWN9 0x1b /* Unknown */135#define MCE_CMD_NULL 0x00 /* These show up various places... */136 137/* if buf[i] & MCE_PORT_MASK == 0x80 and buf[i] != MCE_CMD_PORT_IR,138 * then we're looking at a raw IR data sample */139#define MCE_COMMAND_IRDATA 0x80140#define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */141 142#define VENDOR_PHILIPS 0x0471143#define VENDOR_SMK 0x0609144#define VENDOR_TATUNG 0x1460145#define VENDOR_GATEWAY 0x107b146#define VENDOR_SHUTTLE 0x1308147#define VENDOR_SHUTTLE2 0x051c148#define VENDOR_MITSUMI 0x03ee149#define VENDOR_TOPSEED 0x1784150#define VENDOR_RICAVISION 0x179d151#define VENDOR_ITRON 0x195d152#define VENDOR_FIC 0x1509153#define VENDOR_LG 0x043e154#define VENDOR_MICROSOFT 0x045e155#define VENDOR_FORMOSA 0x147a156#define VENDOR_FINTEK 0x1934157#define VENDOR_PINNACLE 0x2304158#define VENDOR_ECS 0x1019159#define VENDOR_WISTRON 0x0fb8160#define VENDOR_COMPRO 0x185b161#define VENDOR_NORTHSTAR 0x04eb162#define VENDOR_REALTEK 0x0bda163#define VENDOR_TIVO 0x105a164#define VENDOR_CONEXANT 0x0572165#define VENDOR_TWISTEDMELON 0x2596166#define VENDOR_HAUPPAUGE 0x2040167#define VENDOR_PCTV 0x2013168#define VENDOR_ADAPTEC 0x03f3169 170enum mceusb_model_type {171 MCE_GEN2 = 0, /* Most boards */172 MCE_GEN1,173 MCE_GEN3,174 MCE_GEN3_BROKEN_IRTIMEOUT,175 MCE_GEN2_TX_INV,176 MCE_GEN2_TX_INV_RX_GOOD,177 POLARIS_EVK,178 CX_HYBRID_TV,179 MULTIFUNCTION,180 TIVO_KIT,181 MCE_GEN2_NO_TX,182 HAUPPAUGE_CX_HYBRID_TV,183 EVROMEDIA_FULL_HYBRID_FULLHD,184 ASTROMETA_T2HYBRID,185};186 187struct mceusb_model {188 u32 mce_gen1:1;189 u32 mce_gen2:1;190 u32 mce_gen3:1;191 u32 tx_mask_normal:1;192 u32 no_tx:1;193 u32 broken_irtimeout:1;194 /*195 * 2nd IR receiver (short-range, wideband) for learning mode:196 * 0, absent 2nd receiver (rx2)197 * 1, rx2 present198 * 2, rx2 which under counts IR carrier cycles199 */200 u32 rx2;201 202 int ir_intfnum;203 204 const char *rc_map; /* Allow specify a per-board map */205 const char *name; /* per-board name */206};207 208static const struct mceusb_model mceusb_model[] = {209 [MCE_GEN1] = {210 .mce_gen1 = 1,211 .tx_mask_normal = 1,212 .rx2 = 2,213 },214 [MCE_GEN2] = {215 .mce_gen2 = 1,216 .rx2 = 2,217 },218 [MCE_GEN2_NO_TX] = {219 .mce_gen2 = 1,220 .no_tx = 1,221 },222 [MCE_GEN2_TX_INV] = {223 .mce_gen2 = 1,224 .tx_mask_normal = 1,225 .rx2 = 1,226 },227 [MCE_GEN2_TX_INV_RX_GOOD] = {228 .mce_gen2 = 1,229 .tx_mask_normal = 1,230 .rx2 = 2,231 },232 [MCE_GEN3] = {233 .mce_gen3 = 1,234 .tx_mask_normal = 1,235 .rx2 = 2,236 },237 [MCE_GEN3_BROKEN_IRTIMEOUT] = {238 .mce_gen3 = 1,239 .tx_mask_normal = 1,240 .rx2 = 2,241 .broken_irtimeout = 1242 },243 [POLARIS_EVK] = {244 /*245 * In fact, the EVK is shipped without246 * remotes, but we should have something handy,247 * to allow testing it248 */249 .name = "Conexant Hybrid TV (cx231xx) MCE IR",250 .rx2 = 2,251 },252 [CX_HYBRID_TV] = {253 .no_tx = 1, /* tx isn't wired up at all */254 .name = "Conexant Hybrid TV (cx231xx) MCE IR",255 },256 [HAUPPAUGE_CX_HYBRID_TV] = {257 .no_tx = 1, /* eeprom says it has no tx */258 .name = "Conexant Hybrid TV (cx231xx) MCE IR no TX",259 },260 [MULTIFUNCTION] = {261 .mce_gen2 = 1,262 .ir_intfnum = 2,263 .rx2 = 2,264 },265 [TIVO_KIT] = {266 .mce_gen2 = 1,267 .rc_map = RC_MAP_TIVO,268 .rx2 = 2,269 },270 [EVROMEDIA_FULL_HYBRID_FULLHD] = {271 .name = "Evromedia USB Full Hybrid Full HD",272 .no_tx = 1,273 .rc_map = RC_MAP_MSI_DIGIVOX_III,274 },275 [ASTROMETA_T2HYBRID] = {276 .name = "Astrometa T2Hybrid",277 .no_tx = 1,278 .rc_map = RC_MAP_ASTROMETA_T2HYBRID,279 }280};281 282static const struct usb_device_id mceusb_dev_table[] = {283 /* Original Microsoft MCE IR Transceiver (often HP-branded) */284 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d),285 .driver_info = MCE_GEN1 },286 /* Philips Infrared Transceiver - Sahara branded */287 { USB_DEVICE(VENDOR_PHILIPS, 0x0608) },288 /* Philips Infrared Transceiver - HP branded */289 { USB_DEVICE(VENDOR_PHILIPS, 0x060c),290 .driver_info = MCE_GEN2_TX_INV },291 /* Philips SRM5100 */292 { USB_DEVICE(VENDOR_PHILIPS, 0x060d) },293 /* Philips Infrared Transceiver - Omaura */294 { USB_DEVICE(VENDOR_PHILIPS, 0x060f) },295 /* Philips Infrared Transceiver - Spinel plus */296 { USB_DEVICE(VENDOR_PHILIPS, 0x0613) },297 /* Philips eHome Infrared Transceiver */298 { USB_DEVICE(VENDOR_PHILIPS, 0x0815) },299 /* Philips/Spinel plus IR transceiver for ASUS */300 { USB_DEVICE(VENDOR_PHILIPS, 0x206c) },301 /* Philips/Spinel plus IR transceiver for ASUS */302 { USB_DEVICE(VENDOR_PHILIPS, 0x2088) },303 /* Philips IR transceiver (Dell branded) */304 { USB_DEVICE(VENDOR_PHILIPS, 0x2093),305 .driver_info = MCE_GEN2_TX_INV },306 /* Realtek MCE IR Receiver and card reader */307 { USB_DEVICE(VENDOR_REALTEK, 0x0161),308 .driver_info = MULTIFUNCTION },309 /* SMK/Toshiba G83C0004D410 */310 { USB_DEVICE(VENDOR_SMK, 0x031d),311 .driver_info = MCE_GEN2_TX_INV_RX_GOOD },312 /* SMK eHome Infrared Transceiver (Sony VAIO) */313 { USB_DEVICE(VENDOR_SMK, 0x0322),314 .driver_info = MCE_GEN2_TX_INV },315 /* bundled with Hauppauge PVR-150 */316 { USB_DEVICE(VENDOR_SMK, 0x0334),317 .driver_info = MCE_GEN2_TX_INV },318 /* SMK eHome Infrared Transceiver */319 { USB_DEVICE(VENDOR_SMK, 0x0338) },320 /* SMK/I-O Data GV-MC7/RCKIT Receiver */321 { USB_DEVICE(VENDOR_SMK, 0x0353),322 .driver_info = MCE_GEN2_NO_TX },323 /* SMK RXX6000 Infrared Receiver */324 { USB_DEVICE(VENDOR_SMK, 0x0357),325 .driver_info = MCE_GEN2_NO_TX },326 /* Tatung eHome Infrared Transceiver */327 { USB_DEVICE(VENDOR_TATUNG, 0x9150) },328 /* Shuttle eHome Infrared Transceiver */329 { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) },330 /* Shuttle eHome Infrared Transceiver */331 { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) },332 /* Gateway eHome Infrared Transceiver */333 { USB_DEVICE(VENDOR_GATEWAY, 0x3009) },334 /* Mitsumi */335 { USB_DEVICE(VENDOR_MITSUMI, 0x2501) },336 /* Topseed eHome Infrared Transceiver */337 { USB_DEVICE(VENDOR_TOPSEED, 0x0001),338 .driver_info = MCE_GEN2_TX_INV },339 /* Topseed HP eHome Infrared Transceiver */340 { USB_DEVICE(VENDOR_TOPSEED, 0x0006),341 .driver_info = MCE_GEN2_TX_INV },342 /* Topseed eHome Infrared Transceiver */343 { USB_DEVICE(VENDOR_TOPSEED, 0x0007),344 .driver_info = MCE_GEN2_TX_INV },345 /* Topseed eHome Infrared Transceiver */346 { USB_DEVICE(VENDOR_TOPSEED, 0x0008),347 .driver_info = MCE_GEN3 },348 /* Topseed eHome Infrared Transceiver */349 { USB_DEVICE(VENDOR_TOPSEED, 0x000a),350 .driver_info = MCE_GEN2_TX_INV },351 /* Topseed eHome Infrared Transceiver */352 { USB_DEVICE(VENDOR_TOPSEED, 0x0011),353 .driver_info = MCE_GEN3_BROKEN_IRTIMEOUT },354 /* Ricavision internal Infrared Transceiver */355 { USB_DEVICE(VENDOR_RICAVISION, 0x0010) },356 /* Itron ione Libra Q-11 */357 { USB_DEVICE(VENDOR_ITRON, 0x7002) },358 /* FIC eHome Infrared Transceiver */359 { USB_DEVICE(VENDOR_FIC, 0x9242) },360 /* LG eHome Infrared Transceiver */361 { USB_DEVICE(VENDOR_LG, 0x9803) },362 /* Microsoft MCE Infrared Transceiver */363 { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) },364 /* Formosa eHome Infrared Transceiver */365 { USB_DEVICE(VENDOR_FORMOSA, 0xe015) },366 /* Formosa21 / eHome Infrared Receiver */367 { USB_DEVICE(VENDOR_FORMOSA, 0xe016) },368 /* Formosa aim / Trust MCE Infrared Receiver */369 { USB_DEVICE(VENDOR_FORMOSA, 0xe017),370 .driver_info = MCE_GEN2_NO_TX },371 /* Formosa Industrial Computing / Beanbag Emulation Device */372 { USB_DEVICE(VENDOR_FORMOSA, 0xe018) },373 /* Formosa21 / eHome Infrared Receiver */374 { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) },375 /* Formosa Industrial Computing AIM IR605/A */376 { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) },377 /* Formosa Industrial Computing */378 { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) },379 /* Formosa Industrial Computing */380 { USB_DEVICE(VENDOR_FORMOSA, 0xe042) },381 /* Fintek eHome Infrared Transceiver (HP branded) */382 { USB_DEVICE(VENDOR_FINTEK, 0x5168),383 .driver_info = MCE_GEN2_TX_INV },384 /* Fintek eHome Infrared Transceiver */385 { USB_DEVICE(VENDOR_FINTEK, 0x0602) },386 /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */387 { USB_DEVICE(VENDOR_FINTEK, 0x0702) },388 /* Pinnacle Remote Kit */389 { USB_DEVICE(VENDOR_PINNACLE, 0x0225),390 .driver_info = MCE_GEN3 },391 /* Elitegroup Computer Systems IR */392 { USB_DEVICE(VENDOR_ECS, 0x0f38) },393 /* Wistron Corp. eHome Infrared Receiver */394 { USB_DEVICE(VENDOR_WISTRON, 0x0002) },395 /* Compro K100 */396 { USB_DEVICE(VENDOR_COMPRO, 0x3020) },397 /* Compro K100 v2 */398 { USB_DEVICE(VENDOR_COMPRO, 0x3082) },399 /* Northstar Systems, Inc. eHome Infrared Transceiver */400 { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) },401 /* TiVo PC IR Receiver */402 { USB_DEVICE(VENDOR_TIVO, 0x2000),403 .driver_info = TIVO_KIT },404 /* Conexant Hybrid TV "Shelby" Polaris SDK */405 { USB_DEVICE(VENDOR_CONEXANT, 0x58a1),406 .driver_info = POLARIS_EVK },407 /* Conexant Hybrid TV RDU253S Polaris */408 { USB_DEVICE(VENDOR_CONEXANT, 0x58a5),409 .driver_info = CX_HYBRID_TV },410 /* Twisted Melon Inc. - Manta Mini Receiver */411 { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8008) },412 /* Twisted Melon Inc. - Manta Pico Receiver */413 { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8016) },414 /* Twisted Melon Inc. - Manta Transceiver */415 { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8042) },416 /* Hauppauge WINTV-HVR-HVR 930C-HD - based on cx231xx */417 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb130),418 .driver_info = HAUPPAUGE_CX_HYBRID_TV },419 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb131),420 .driver_info = HAUPPAUGE_CX_HYBRID_TV },421 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb138),422 .driver_info = HAUPPAUGE_CX_HYBRID_TV },423 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb139),424 .driver_info = HAUPPAUGE_CX_HYBRID_TV },425 /* Hauppauge WinTV-HVR-935C - based on cx231xx */426 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb151),427 .driver_info = HAUPPAUGE_CX_HYBRID_TV },428 /* Hauppauge WinTV-HVR-955Q - based on cx231xx */429 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb123),430 .driver_info = HAUPPAUGE_CX_HYBRID_TV },431 /* Hauppauge WinTV-HVR-975 - based on cx231xx */432 { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb150),433 .driver_info = HAUPPAUGE_CX_HYBRID_TV },434 { USB_DEVICE(VENDOR_PCTV, 0x0259),435 .driver_info = HAUPPAUGE_CX_HYBRID_TV },436 { USB_DEVICE(VENDOR_PCTV, 0x025e),437 .driver_info = HAUPPAUGE_CX_HYBRID_TV },438 /* Adaptec / HP eHome Receiver */439 { USB_DEVICE(VENDOR_ADAPTEC, 0x0094) },440 /* Evromedia USB Full Hybrid Full HD */441 { USB_DEVICE(0x1b80, 0xd3b2),442 .driver_info = EVROMEDIA_FULL_HYBRID_FULLHD },443 /* Astrometa T2hybrid */444 { USB_DEVICE(0x15f4, 0x0135),445 .driver_info = ASTROMETA_T2HYBRID },446 447 /* Terminating entry */448 { }449};450 451/* data structure for each usb transceiver */452struct mceusb_dev {453 /* ir-core bits */454 struct rc_dev *rc;455 456 /* optional features we can enable */457 bool carrier_report_enabled;458 bool wideband_rx_enabled; /* aka learning mode, short-range rx */459 460 /* core device bits */461 struct device *dev;462 463 /* usb */464 struct usb_device *usbdev;465 struct usb_interface *usbintf;466 struct urb *urb_in;467 unsigned int pipe_in;468 struct usb_endpoint_descriptor *usb_ep_out;469 unsigned int pipe_out;470 471 /* buffers and dma */472 unsigned char *buf_in;473 unsigned int len_in;474 dma_addr_t dma_in;475 476 enum {477 CMD_HEADER = 0,478 SUBCMD,479 CMD_DATA,480 PARSE_IRDATA,481 } parser_state;482 483 u8 cmd, rem; /* Remaining IR data bytes in packet */484 485 struct {486 u32 connected:1;487 u32 tx_mask_normal:1;488 u32 microsoft_gen1:1;489 u32 no_tx:1;490 u32 rx2;491 } flags;492 493 /* transmit support */494 u32 carrier;495 unsigned char tx_mask;496 497 char phys[64];498 enum mceusb_model_type model;499 500 bool need_reset; /* flag to issue a device resume cmd */501 u8 emver; /* emulator interface version */502 u8 num_txports; /* number of transmit ports */503 u8 num_rxports; /* number of receive sensors */504 u8 txports_cabled; /* bitmask of transmitters with cable */505 u8 rxports_active; /* bitmask of active receive sensors */506 bool learning_active; /* wideband rx is active */507 508 /* receiver carrier frequency detection support */509 u32 pulse_tunit; /* IR pulse "on" cumulative time units */510 u32 pulse_count; /* pulse "on" count in measurement interval */511 512 /*513 * support for async error handler mceusb_deferred_kevent()514 * where usb_clear_halt(), usb_reset_configuration(),515 * usb_reset_device(), etc. must be done in process context516 */517 struct work_struct kevent;518 unsigned long kevent_flags;519# define EVENT_TX_HALT 0520# define EVENT_RX_HALT 1521# define EVENT_RST_PEND 31522};523 524/* MCE Device Command Strings, generally a port and command pair */525static char DEVICE_RESUME[] = {MCE_CMD_NULL, MCE_CMD_PORT_SYS,526 MCE_CMD_RESUME};527static char GET_REVISION[] = {MCE_CMD_PORT_SYS, MCE_CMD_G_REVISION};528static char GET_EMVER[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETEMVER};529static char GET_WAKEVERSION[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETWAKEVERSION};530static char FLASH_LED[] = {MCE_CMD_PORT_SYS, MCE_CMD_FLASHLED};531static char GET_UNKNOWN2[] = {MCE_CMD_PORT_IR, MCE_CMD_UNKNOWN2};532static char GET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRCFS};533static char GET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTIMEOUT};534static char GET_NUM_PORTS[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRNUMPORTS};535static char GET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTXPORTS};536static char GET_RX_SENSOR[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRRXPORTEN};537/* sub in desired values in lower byte or bytes for full command */538/* FIXME: make use of these for transmit.539static char SET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR,540 MCE_CMD_SETIRCFS, 0x00, 0x00};541static char SET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_SETIRTXPORTS, 0x00};542static char SET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR,543 MCE_CMD_SETIRTIMEOUT, 0x00, 0x00};544static char SET_RX_SENSOR[] = {MCE_CMD_PORT_IR,545 MCE_RSP_EQIRRXPORTEN, 0x00};546*/547 548static int mceusb_cmd_datasize(u8 cmd, u8 subcmd)549{550 int datasize = 0;551 552 switch (cmd) {553 case MCE_CMD_NULL:554 if (subcmd == MCE_CMD_PORT_SYS)555 datasize = 1;556 break;557 case MCE_CMD_PORT_SYS:558 switch (subcmd) {559 case MCE_RSP_GETPORTSTATUS:560 datasize = 5;561 break;562 case MCE_RSP_EQWAKEVERSION:563 datasize = 4;564 break;565 case MCE_CMD_G_REVISION:566 datasize = 4;567 break;568 case MCE_RSP_EQWAKESUPPORT:569 case MCE_RSP_GETWAKESOURCE:570 case MCE_RSP_EQDEVDETAILS:571 case MCE_RSP_EQEMVER:572 datasize = 1;573 break;574 }575 break;576 case MCE_CMD_PORT_IR:577 switch (subcmd) {578 case MCE_CMD_UNKNOWN:579 case MCE_RSP_EQIRCFS:580 case MCE_RSP_EQIRTIMEOUT:581 case MCE_RSP_EQIRRXCFCNT:582 case MCE_RSP_EQIRNUMPORTS:583 datasize = 2;584 break;585 case MCE_CMD_SIG_END:586 case MCE_RSP_EQIRTXPORTS:587 case MCE_RSP_EQIRRXPORTEN:588 datasize = 1;589 break;590 }591 }592 return datasize;593}594 595static void mceusb_dev_printdata(struct mceusb_dev *ir, u8 *buf, int buf_len,596 int offset, int len, bool out)597{598#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)599 char *inout;600 u8 cmd, subcmd, *data;601 struct device *dev = ir->dev;602 u32 carrier, period;603 604 if (offset < 0 || offset >= buf_len)605 return;606 607 dev_dbg(dev, "%cx data[%d]: %*ph (len=%d sz=%d)",608 (out ? 't' : 'r'), offset,609 min(len, buf_len - offset), buf + offset, len, buf_len);610 611 inout = out ? "Request" : "Got";612 613 cmd = buf[offset];614 subcmd = (offset + 1 < buf_len) ? buf[offset + 1] : 0;615 data = &buf[offset] + 2;616 617 /* Trace meaningless 0xb1 0x60 header bytes on original receiver */618 if (ir->flags.microsoft_gen1 && !out && !offset) {619 dev_dbg(dev, "MCE gen 1 header");620 return;621 }622 623 /* Trace IR data header or trailer */624 if (cmd != MCE_CMD_PORT_IR &&625 (cmd & MCE_PORT_MASK) == MCE_COMMAND_IRDATA) {626 if (cmd == MCE_IRDATA_TRAILER)627 dev_dbg(dev, "End of raw IR data");628 else629 dev_dbg(dev, "Raw IR data, %d pulse/space samples",630 cmd & MCE_PACKET_LENGTH_MASK);631 return;632 }633 634 /* Unexpected end of buffer? */635 if (offset + len > buf_len)636 return;637 638 /* Decode MCE command/response */639 switch (cmd) {640 case MCE_CMD_NULL:641 if (subcmd == MCE_CMD_NULL)642 break;643 if ((subcmd == MCE_CMD_PORT_SYS) &&644 (data[0] == MCE_CMD_RESUME))645 dev_dbg(dev, "Device resume requested");646 else647 dev_dbg(dev, "Unknown command 0x%02x 0x%02x",648 cmd, subcmd);649 break;650 case MCE_CMD_PORT_SYS:651 switch (subcmd) {652 case MCE_RSP_EQEMVER:653 if (!out)654 dev_dbg(dev, "Emulator interface version %x",655 data[0]);656 break;657 case MCE_CMD_G_REVISION:658 if (len == 2)659 dev_dbg(dev, "Get hw/sw rev?");660 else661 dev_dbg(dev, "hw/sw rev %*ph",662 4, &buf[offset + 2]);663 break;664 case MCE_CMD_RESUME:665 dev_dbg(dev, "Device resume requested");666 break;667 case MCE_RSP_CMD_ILLEGAL:668 dev_dbg(dev, "Illegal PORT_SYS command");669 break;670 case MCE_RSP_EQWAKEVERSION:671 if (!out)672 dev_dbg(dev, "Wake version, proto: 0x%02x, payload: 0x%02x, address: 0x%02x, version: 0x%02x",673 data[0], data[1], data[2], data[3]);674 break;675 case MCE_RSP_GETPORTSTATUS:676 if (!out)677 /* We use data1 + 1 here, to match hw labels */678 dev_dbg(dev, "TX port %d: blaster is%s connected",679 data[0] + 1, data[3] ? " not" : "");680 break;681 case MCE_CMD_FLASHLED:682 dev_dbg(dev, "Attempting to flash LED");683 break;684 default:685 dev_dbg(dev, "Unknown command 0x%02x 0x%02x",686 cmd, subcmd);687 break;688 }689 break;690 case MCE_CMD_PORT_IR:691 switch (subcmd) {692 case MCE_CMD_SIG_END:693 dev_dbg(dev, "End of signal");694 break;695 case MCE_CMD_PING:696 dev_dbg(dev, "Ping");697 break;698 case MCE_CMD_UNKNOWN:699 dev_dbg(dev, "Resp to 9f 05 of 0x%02x 0x%02x",700 data[0], data[1]);701 break;702 case MCE_RSP_EQIRCFS:703 if (!data[0] && !data[1]) {704 dev_dbg(dev, "%s: no carrier", inout);705 break;706 }707 // prescaler should make sense708 if (data[0] > 8)709 break;710 period = DIV_ROUND_CLOSEST((1U << data[0] * 2) *711 (data[1] + 1), 10);712 if (!period)713 break;714 carrier = USEC_PER_SEC / period;715 dev_dbg(dev, "%s carrier of %u Hz (period %uus)",716 inout, carrier, period);717 break;718 case MCE_CMD_GETIRCFS:719 dev_dbg(dev, "Get carrier mode and freq");720 break;721 case MCE_RSP_EQIRTXPORTS:722 dev_dbg(dev, "%s transmit blaster mask of 0x%02x",723 inout, data[0]);724 break;725 case MCE_RSP_EQIRTIMEOUT:726 /* value is in units of 50us, so x*50/1000 ms */727 period = ((data[0] << 8) | data[1]) *728 MCE_TIME_UNIT / 1000;729 dev_dbg(dev, "%s receive timeout of %d ms",730 inout, period);731 break;732 case MCE_CMD_GETIRTIMEOUT:733 dev_dbg(dev, "Get receive timeout");734 break;735 case MCE_CMD_GETIRTXPORTS:736 dev_dbg(dev, "Get transmit blaster mask");737 break;738 case MCE_RSP_EQIRRXPORTEN:739 dev_dbg(dev, "%s %s-range receive sensor in use",740 inout, data[0] == 0x02 ? "short" : "long");741 break;742 case MCE_CMD_GETIRRXPORTEN:743 /* aka MCE_RSP_EQIRRXCFCNT */744 if (out)745 dev_dbg(dev, "Get receive sensor");746 else747 dev_dbg(dev, "RX carrier cycle count: %d",748 ((data[0] << 8) | data[1]));749 break;750 case MCE_RSP_EQIRNUMPORTS:751 if (out)752 break;753 dev_dbg(dev, "Num TX ports: %x, num RX ports: %x",754 data[0], data[1]);755 break;756 case MCE_RSP_CMD_ILLEGAL:757 dev_dbg(dev, "Illegal PORT_IR command");758 break;759 case MCE_RSP_TX_TIMEOUT:760 dev_dbg(dev, "IR TX timeout (TX buffer underrun)");761 break;762 default:763 dev_dbg(dev, "Unknown command 0x%02x 0x%02x",764 cmd, subcmd);765 break;766 }767 break;768 default:769 break;770 }771#endif772}773 774/*775 * Schedule work that can't be done in interrupt handlers776 * (mceusb_dev_recv() and mce_write_callback()) nor BH work.777 * Invokes mceusb_deferred_kevent() for recovering from778 * error events specified by the kevent bit field.779 */780static void mceusb_defer_kevent(struct mceusb_dev *ir, int kevent)781{782 set_bit(kevent, &ir->kevent_flags);783 784 if (test_bit(EVENT_RST_PEND, &ir->kevent_flags)) {785 dev_dbg(ir->dev, "kevent %d dropped pending USB Reset Device",786 kevent);787 return;788 }789 790 if (!schedule_work(&ir->kevent))791 dev_dbg(ir->dev, "kevent %d already scheduled", kevent);792 else793 dev_dbg(ir->dev, "kevent %d scheduled", kevent);794}795 796static void mce_write_callback(struct urb *urb)797{798 if (!urb)799 return;800 801 complete(urb->context);802}803 804/*805 * Write (TX/send) data to MCE device USB endpoint out.806 * Used for IR blaster TX and MCE device commands.807 *808 * Return: The number of bytes written (> 0) or errno (< 0).809 */810static int mce_write(struct mceusb_dev *ir, u8 *data, int size)811{812 int ret;813 struct urb *urb;814 struct device *dev = ir->dev;815 unsigned char *buf_out;816 struct completion tx_done;817 unsigned long expire;818 unsigned long ret_wait;819 820 mceusb_dev_printdata(ir, data, size, 0, size, true);821 822 urb = usb_alloc_urb(0, GFP_KERNEL);823 if (unlikely(!urb)) {824 dev_err(dev, "Error: mce write couldn't allocate urb");825 return -ENOMEM;826 }827 828 buf_out = kmalloc(size, GFP_KERNEL);829 if (!buf_out) {830 usb_free_urb(urb);831 return -ENOMEM;832 }833 834 init_completion(&tx_done);835 836 /* outbound data */837 if (usb_endpoint_xfer_int(ir->usb_ep_out))838 usb_fill_int_urb(urb, ir->usbdev, ir->pipe_out,839 buf_out, size, mce_write_callback, &tx_done,840 ir->usb_ep_out->bInterval);841 else842 usb_fill_bulk_urb(urb, ir->usbdev, ir->pipe_out,843 buf_out, size, mce_write_callback, &tx_done);844 memcpy(buf_out, data, size);845 846 ret = usb_submit_urb(urb, GFP_KERNEL);847 if (ret) {848 dev_err(dev, "Error: mce write submit urb error = %d", ret);849 kfree(buf_out);850 usb_free_urb(urb);851 return ret;852 }853 854 expire = msecs_to_jiffies(USB_TX_TIMEOUT);855 ret_wait = wait_for_completion_timeout(&tx_done, expire);856 if (!ret_wait) {857 dev_err(dev, "Error: mce write timed out (expire = %lu (%dms))",858 expire, USB_TX_TIMEOUT);859 usb_kill_urb(urb);860 ret = (urb->status == -ENOENT ? -ETIMEDOUT : urb->status);861 } else {862 ret = urb->status;863 }864 if (ret >= 0)865 ret = urb->actual_length; /* bytes written */866 867 switch (urb->status) {868 /* success */869 case 0:870 break;871 872 case -ECONNRESET:873 case -ENOENT:874 case -EILSEQ:875 case -ESHUTDOWN:876 break;877 878 case -EPIPE:879 dev_err(ir->dev, "Error: mce write urb status = %d (TX HALT)",880 urb->status);881 mceusb_defer_kevent(ir, EVENT_TX_HALT);882 break;883 884 default:885 dev_err(ir->dev, "Error: mce write urb status = %d",886 urb->status);887 break;888 }889 890 dev_dbg(dev, "tx done status = %d (wait = %lu, expire = %lu (%dms), urb->actual_length = %d, urb->status = %d)",891 ret, ret_wait, expire, USB_TX_TIMEOUT,892 urb->actual_length, urb->status);893 894 kfree(buf_out);895 usb_free_urb(urb);896 897 return ret;898}899 900static void mce_command_out(struct mceusb_dev *ir, u8 *data, int size)901{902 int rsize = sizeof(DEVICE_RESUME);903 904 if (ir->need_reset) {905 ir->need_reset = false;906 mce_write(ir, DEVICE_RESUME, rsize);907 msleep(10);908 }909 910 mce_write(ir, data, size);911 msleep(10);912}913 914/*915 * Transmit IR out the MCE device IR blaster port(s).916 *917 * Convert IR pulse/space sequence from LIRC to MCE format.918 * Break up a long IR sequence into multiple parts (MCE IR data packets).919 *920 * u32 txbuf[] consists of IR pulse, space, ..., and pulse times in usec.921 * Pulses and spaces are implicit by their position.922 * The first IR sample, txbuf[0], is always a pulse.923 *924 * u8 irbuf[] consists of multiple IR data packets for the MCE device.925 * A packet is 1 u8 MCE_IRDATA_HEADER and up to 30 u8 IR samples.926 * An IR sample is 1-bit pulse/space flag with 7-bit time927 * in MCE time units (50usec).928 *929 * Return: The number of IR samples sent (> 0) or errno (< 0).930 */931static int mceusb_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count)932{933 struct mceusb_dev *ir = dev->priv;934 u8 cmdbuf[3] = { MCE_CMD_PORT_IR, MCE_CMD_SETIRTXPORTS, 0x00 };935 u8 irbuf[MCE_IRBUF_SIZE];936 int ircount = 0;937 unsigned int irsample;938 int i, length, ret;939 940 /* Send the set TX ports command */941 cmdbuf[2] = ir->tx_mask;942 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));943 944 /* Generate mce IR data packet */945 for (i = 0; i < count; i++) {946 irsample = txbuf[i] / MCE_TIME_UNIT;947 948 /* loop to support long pulses/spaces > 6350us (127*50us) */949 while (irsample > 0) {950 /* Insert IR header every 30th entry */951 if (ircount % MCE_PACKET_SIZE == 0) {952 /* Room for IR header and one IR sample? */953 if (ircount >= MCE_IRBUF_SIZE - 1) {954 /* Send near full buffer */955 ret = mce_write(ir, irbuf, ircount);956 if (ret < 0)957 return ret;958 ircount = 0;959 }960 irbuf[ircount++] = MCE_IRDATA_HEADER;961 }962 963 /* Insert IR sample */964 if (irsample <= MCE_MAX_PULSE_LENGTH) {965 irbuf[ircount] = irsample;966 irsample = 0;967 } else {968 irbuf[ircount] = MCE_MAX_PULSE_LENGTH;969 irsample -= MCE_MAX_PULSE_LENGTH;970 }971 /*972 * Even i = IR pulse973 * Odd i = IR space974 */975 irbuf[ircount] |= (i & 1 ? 0 : MCE_PULSE_BIT);976 ircount++;977 978 /* IR buffer full? */979 if (ircount >= MCE_IRBUF_SIZE) {980 /* Fix packet length in last header */981 length = ircount % MCE_PACKET_SIZE;982 if (length > 0)983 irbuf[ircount - length] -=984 MCE_PACKET_SIZE - length;985 /* Send full buffer */986 ret = mce_write(ir, irbuf, ircount);987 if (ret < 0)988 return ret;989 ircount = 0;990 }991 }992 } /* after for loop, 0 <= ircount < MCE_IRBUF_SIZE */993 994 /* Fix packet length in last header */995 length = ircount % MCE_PACKET_SIZE;996 if (length > 0)997 irbuf[ircount - length] -= MCE_PACKET_SIZE - length;998 999 /* Append IR trailer (0x80) to final partial (or empty) IR buffer */1000 irbuf[ircount++] = MCE_IRDATA_TRAILER;1001 1002 /* Send final buffer */1003 ret = mce_write(ir, irbuf, ircount);1004 if (ret < 0)1005 return ret;1006 1007 return count;1008}1009 1010/* Sets active IR outputs -- mce devices typically have two */1011static int mceusb_set_tx_mask(struct rc_dev *dev, u32 mask)1012{1013 struct mceusb_dev *ir = dev->priv;1014 1015 /* return number of transmitters */1016 int emitters = ir->num_txports ? ir->num_txports : 2;1017 1018 if (mask >= (1 << emitters))1019 return emitters;1020 1021 if (ir->flags.tx_mask_normal)1022 ir->tx_mask = mask;1023 else1024 ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ?1025 mask ^ MCE_DEFAULT_TX_MASK : mask) << 1;1026 1027 return 0;1028}1029 1030/* Sets the send carrier frequency and mode */1031static int mceusb_set_tx_carrier(struct rc_dev *dev, u32 carrier)1032{1033 struct mceusb_dev *ir = dev->priv;1034 int clk = 10000000;1035 int prescaler = 0, divisor = 0;1036 unsigned char cmdbuf[4] = { MCE_CMD_PORT_IR,1037 MCE_CMD_SETIRCFS, 0x00, 0x00 };1038 1039 /* Carrier has changed */1040 if (ir->carrier != carrier) {1041 1042 if (carrier == 0) {1043 ir->carrier = carrier;1044 cmdbuf[2] = MCE_CMD_SIG_END;1045 cmdbuf[3] = MCE_IRDATA_TRAILER;1046 dev_dbg(ir->dev, "disabling carrier modulation");1047 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));1048 return 0;1049 }1050 1051 for (prescaler = 0; prescaler < 4; ++prescaler) {1052 divisor = (clk >> (2 * prescaler)) / carrier;1053 if (divisor <= 0xff) {1054 ir->carrier = carrier;1055 cmdbuf[2] = prescaler;1056 cmdbuf[3] = divisor;1057 dev_dbg(ir->dev, "requesting %u HZ carrier",1058 carrier);1059 1060 /* Transmit new carrier to mce device */1061 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));1062 return 0;1063 }1064 }1065 1066 return -EINVAL;1067 1068 }1069 1070 return 0;1071}1072 1073static int mceusb_set_timeout(struct rc_dev *dev, unsigned int timeout)1074{1075 u8 cmdbuf[4] = { MCE_CMD_PORT_IR, MCE_CMD_SETIRTIMEOUT, 0, 0 };1076 struct mceusb_dev *ir = dev->priv;1077 unsigned int units;1078 1079 units = DIV_ROUND_UP(timeout, MCE_TIME_UNIT);1080 1081 cmdbuf[2] = units >> 8;1082 cmdbuf[3] = units;1083 1084 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));1085 1086 /* get receiver timeout value */1087 mce_command_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));1088 1089 return 0;1090}1091 1092/*1093 * Select or deselect the 2nd receiver port.1094 * Second receiver is learning mode, wide-band, short-range receiver.1095 * Only one receiver (long or short range) may be active at a time.1096 */1097static int mceusb_set_rx_wideband(struct rc_dev *dev, int enable)1098{1099 struct mceusb_dev *ir = dev->priv;1100 unsigned char cmdbuf[3] = { MCE_CMD_PORT_IR,1101 MCE_CMD_SETIRRXPORTEN, 0x00 };1102 1103 dev_dbg(ir->dev, "select %s-range receive sensor",1104 enable ? "short" : "long");1105 if (enable) {1106 ir->wideband_rx_enabled = true;1107 cmdbuf[2] = 2; /* port 2 is short range receiver */1108 } else {1109 ir->wideband_rx_enabled = false;1110 cmdbuf[2] = 1; /* port 1 is long range receiver */1111 }1112 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));1113 /* response from device sets ir->learning_active */1114 1115 return 0;1116}1117 1118/*1119 * Enable/disable receiver carrier frequency pass through reporting.1120 * Only the short-range receiver has carrier frequency measuring capability.1121 * Implicitly select this receiver when enabling carrier frequency reporting.1122 */1123static int mceusb_set_rx_carrier_report(struct rc_dev *dev, int enable)1124{1125 struct mceusb_dev *ir = dev->priv;1126 unsigned char cmdbuf[3] = { MCE_CMD_PORT_IR,1127 MCE_CMD_SETIRRXPORTEN, 0x00 };1128 1129 dev_dbg(ir->dev, "%s short-range receiver carrier reporting",1130 enable ? "enable" : "disable");1131 if (enable) {1132 ir->carrier_report_enabled = true;1133 if (!ir->learning_active) {1134 cmdbuf[2] = 2; /* port 2 is short range receiver */1135 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));1136 }1137 } else {1138 ir->carrier_report_enabled = false;1139 /*1140 * Revert to normal (long-range) receiver only if the1141 * wideband (short-range) receiver wasn't explicitly1142 * enabled.1143 */1144 if (ir->learning_active && !ir->wideband_rx_enabled) {1145 cmdbuf[2] = 1; /* port 1 is long range receiver */1146 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));1147 }1148 }1149 1150 return 0;1151}1152 1153/*1154 * Handle PORT_SYS/IR command response received from the MCE device.1155 *1156 * Assumes single response with all its data (not truncated)1157 * in buf_in[]. The response itself determines its total length1158 * (mceusb_cmd_datasize() + 2) and hence the minimum size of buf_in[].1159 *1160 * We don't do anything but print debug spew for many of the command bits1161 * we receive from the hardware, but some of them are useful information1162 * we want to store so that we can use them.1163 */1164static void mceusb_handle_command(struct mceusb_dev *ir, u8 *buf_in)1165{1166 u8 cmd = buf_in[0];1167 u8 subcmd = buf_in[1];1168 u8 *hi = &buf_in[2]; /* read only when required */1169 u8 *lo = &buf_in[3]; /* read only when required */1170 struct ir_raw_event rawir = {};1171 u32 carrier_cycles;1172 u32 cycles_fix;1173 1174 if (cmd == MCE_CMD_PORT_SYS) {1175 switch (subcmd) {1176 /* the one and only 5-byte return value command */1177 case MCE_RSP_GETPORTSTATUS:1178 if (buf_in[5] == 0 && *hi < 8)1179 ir->txports_cabled |= 1 << *hi;1180 break;1181 1182 /* 1-byte return value commands */1183 case MCE_RSP_EQEMVER:1184 ir->emver = *hi;1185 break;1186 1187 /* No return value commands */1188 case MCE_RSP_CMD_ILLEGAL:1189 ir->need_reset = true;1190 break;1191 1192 default:1193 break;1194 }1195 1196 return;1197 }1198 1199 if (cmd != MCE_CMD_PORT_IR)1200 return;1201 1202 switch (subcmd) {1203 /* 2-byte return value commands */1204 case MCE_RSP_EQIRTIMEOUT:1205 ir->rc->timeout = (*hi << 8 | *lo) * MCE_TIME_UNIT;1206 break;1207 case MCE_RSP_EQIRNUMPORTS:1208 ir->num_txports = *hi;1209 ir->num_rxports = *lo;1210 break;1211 case MCE_RSP_EQIRRXCFCNT:1212 /*1213 * The carrier cycle counter can overflow and wrap around1214 * without notice from the device. So frequency measurement1215 * will be inaccurate with long duration IR.1216 *1217 * The long-range (non learning) receiver always reports1218 * zero count so we always ignore its report.1219 */1220 if (ir->carrier_report_enabled && ir->learning_active &&1221 ir->pulse_tunit > 0) {1222 carrier_cycles = (*hi << 8 | *lo);1223 /*1224 * Adjust carrier cycle count by adding1225 * 1 missed count per pulse "on"1226 */1227 cycles_fix = ir->flags.rx2 == 2 ? ir->pulse_count : 0;1228 rawir.carrier_report = 1;1229 rawir.carrier = (1000000u / MCE_TIME_UNIT) *1230 (carrier_cycles + cycles_fix) /1231 ir->pulse_tunit;1232 dev_dbg(ir->dev, "RX carrier frequency %u Hz (pulse count = %u, cycles = %u, duration = %u, rx2 = %u)",1233 rawir.carrier, ir->pulse_count, carrier_cycles,1234 ir->pulse_tunit, ir->flags.rx2);1235 ir_raw_event_store(ir->rc, &rawir);1236 }1237 break;1238 1239 /* 1-byte return value commands */1240 case MCE_RSP_EQIRTXPORTS:1241 ir->tx_mask = *hi;1242 break;1243 case MCE_RSP_EQIRRXPORTEN:1244 ir->learning_active = ((*hi & 0x02) == 0x02);1245 if (ir->rxports_active != *hi) {1246 dev_info(ir->dev, "%s-range (0x%x) receiver active",1247 ir->learning_active ? "short" : "long", *hi);1248 ir->rxports_active = *hi;1249 }1250 break;1251 1252 /* No return value commands */1253 case MCE_RSP_CMD_ILLEGAL:1254 case MCE_RSP_TX_TIMEOUT:1255 ir->need_reset = true;1256 break;1257 1258 default:1259 break;1260 }1261}1262 1263static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)1264{1265 struct ir_raw_event rawir = {};1266 bool event = false;1267 int i = 0;1268 1269 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */1270 if (ir->flags.microsoft_gen1)1271 i = 2;1272 1273 /* if there's no data, just return now */1274 if (buf_len <= i)1275 return;1276 1277 for (; i < buf_len; i++) {1278 switch (ir->parser_state) {1279 case SUBCMD:1280 ir->rem = mceusb_cmd_datasize(ir->cmd, ir->buf_in[i]);1281 mceusb_dev_printdata(ir, ir->buf_in, buf_len, i - 1,1282 ir->rem + 2, false);1283 if (i + ir->rem < buf_len)1284 mceusb_handle_command(ir, &ir->buf_in[i - 1]);1285 ir->parser_state = CMD_DATA;1286 break;1287 case PARSE_IRDATA:1288 ir->rem--;1289 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);1290 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK);1291 if (unlikely(!rawir.duration)) {1292 dev_dbg(ir->dev, "nonsensical irdata %02x with duration 0",1293 ir->buf_in[i]);1294 break;1295 }1296 if (rawir.pulse) {1297 ir->pulse_tunit += rawir.duration;1298 ir->pulse_count++;1299 }1300 rawir.duration *= MCE_TIME_UNIT;1301 1302 dev_dbg(ir->dev, "Storing %s %u us (%02x)",1303 rawir.pulse ? "pulse" : "space",1304 rawir.duration, ir->buf_in[i]);1305 1306 if (ir_raw_event_store_with_filter(ir->rc, &rawir))1307 event = true;1308 break;1309 case CMD_DATA:1310 ir->rem--;1311 break;1312 case CMD_HEADER:1313 ir->cmd = ir->buf_in[i];1314 if ((ir->cmd == MCE_CMD_PORT_IR) ||1315 ((ir->cmd & MCE_PORT_MASK) !=1316 MCE_COMMAND_IRDATA)) {1317 /*1318 * got PORT_SYS, PORT_IR, or unknown1319 * command response prefix1320 */1321 ir->parser_state = SUBCMD;1322 continue;1323 }1324 /*1325 * got IR data prefix (0x80 + num_bytes)1326 * decode MCE packets of the form {0x83, AA, BB, CC}1327 * IR data packets can span USB messages1328 */1329 ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK);1330 mceusb_dev_printdata(ir, ir->buf_in, buf_len,1331 i, ir->rem + 1, false);1332 if (ir->rem) {1333 ir->parser_state = PARSE_IRDATA;1334 } else {1335 struct ir_raw_event ev = {1336 .timeout = 1,1337 .duration = ir->rc->timeout1338 };1339 1340 if (ir_raw_event_store_with_filter(ir->rc,1341 &ev))1342 event = true;1343 ir->pulse_tunit = 0;1344 ir->pulse_count = 0;1345 }1346 break;1347 }1348 1349 if (ir->parser_state != CMD_HEADER && !ir->rem)1350 ir->parser_state = CMD_HEADER;1351 }1352 1353 /*1354 * Accept IR data spanning multiple rx buffers.1355 * Reject MCE command response spanning multiple rx buffers.1356 */1357 if (ir->parser_state != PARSE_IRDATA || !ir->rem)1358 ir->parser_state = CMD_HEADER;1359 1360 if (event) {1361 dev_dbg(ir->dev, "processed IR data");1362 ir_raw_event_handle(ir->rc);1363 }1364}1365 1366static void mceusb_dev_recv(struct urb *urb)1367{1368 struct mceusb_dev *ir;1369 1370 if (!urb)1371 return;1372 1373 ir = urb->context;1374 if (!ir) {1375 usb_unlink_urb(urb);1376 return;1377 }1378 1379 switch (urb->status) {1380 /* success */1381 case 0:1382 mceusb_process_ir_data(ir, urb->actual_length);1383 break;1384 1385 case -ECONNRESET:1386 case -ENOENT:1387 case -EILSEQ:1388 case -EPROTO:1389 case -ESHUTDOWN:1390 usb_unlink_urb(urb);1391 return;1392 1393 case -EPIPE:1394 dev_err(ir->dev, "Error: urb status = %d (RX HALT)",1395 urb->status);1396 mceusb_defer_kevent(ir, EVENT_RX_HALT);1397 return;1398 1399 default:1400 dev_err(ir->dev, "Error: urb status = %d", urb->status);1401 break;1402 }1403 1404 usb_submit_urb(urb, GFP_ATOMIC);1405}1406 1407static void mceusb_get_emulator_version(struct mceusb_dev *ir)1408{1409 /* If we get no reply or an illegal command reply, its ver 1, says MS */1410 ir->emver = 1;1411 mce_command_out(ir, GET_EMVER, sizeof(GET_EMVER));1412}1413 1414static void mceusb_gen1_init(struct mceusb_dev *ir)1415{1416 int ret;1417 struct device *dev = ir->dev;1418 char data[USB_CTRL_MSG_SZ];1419 1420 /*1421 * This is a strange one. Windows issues a set address to the device1422 * on the receive control pipe and expect a certain value pair back1423 */1424 ret = usb_control_msg_recv(ir->usbdev, 0, USB_REQ_SET_ADDRESS,1425 USB_DIR_IN | USB_TYPE_VENDOR,1426 0, 0, data, USB_CTRL_MSG_SZ, 3000,1427 GFP_KERNEL);1428 dev_dbg(dev, "set address - ret = %d", ret);1429 dev_dbg(dev, "set address - data[0] = %d, data[1] = %d",1430 data[0], data[1]);1431 1432 /* set feature: bit rate 38400 bps */1433 ret = usb_control_msg_send(ir->usbdev, 0,1434 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,1435 0xc04e, 0x0000, NULL, 0, 3000, GFP_KERNEL);1436 1437 dev_dbg(dev, "set feature - ret = %d", ret);1438 1439 /* bRequest 4: set char length to 8 bits */1440 ret = usb_control_msg_send(ir->usbdev, 0,1441 4, USB_TYPE_VENDOR,1442 0x0808, 0x0000, NULL, 0, 3000, GFP_KERNEL);1443 dev_dbg(dev, "set char length - retB = %d", ret);1444 1445 /* bRequest 2: set handshaking to use DTR/DSR */1446 ret = usb_control_msg_send(ir->usbdev, 0,1447 2, USB_TYPE_VENDOR,1448 0x0000, 0x0100, NULL, 0, 3000, GFP_KERNEL);1449 dev_dbg(dev, "set handshake - retC = %d", ret);1450 1451 /* device resume */1452 mce_command_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME));1453 1454 /* get hw/sw revision? */1455 mce_command_out(ir, GET_REVISION, sizeof(GET_REVISION));1456}1457 1458static void mceusb_gen2_init(struct mceusb_dev *ir)1459{1460 /* device resume */1461 mce_command_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME));1462 1463 /* get wake version (protocol, key, address) */1464 mce_command_out(ir, GET_WAKEVERSION, sizeof(GET_WAKEVERSION));1465 1466 /* unknown what this one actually returns... */1467 mce_command_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2));1468}1469 1470static void mceusb_get_parameters(struct mceusb_dev *ir)1471{1472 int i;1473 unsigned char cmdbuf[3] = { MCE_CMD_PORT_SYS,1474 MCE_CMD_GETPORTSTATUS, 0x00 };1475 1476 /* defaults, if the hardware doesn't support querying */1477 ir->num_txports = 2;1478 ir->num_rxports = 2;1479 1480 /* get number of tx and rx ports */1481 mce_command_out(ir, GET_NUM_PORTS, sizeof(GET_NUM_PORTS));1482 1483 /* get the carrier and frequency */1484 mce_command_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));1485 1486 if (ir->num_txports && !ir->flags.no_tx)1487 /* get the transmitter bitmask */1488 mce_command_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));1489 1490 /* get receiver timeout value */1491 mce_command_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));1492 1493 /* get receiver sensor setting */1494 mce_command_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));1495 1496 for (i = 0; i < ir->num_txports; i++) {1497 cmdbuf[2] = i;1498 mce_command_out(ir, cmdbuf, sizeof(cmdbuf));1499 }1500}1501 1502static void mceusb_flash_led(struct mceusb_dev *ir)1503{1504 if (ir->emver < 2)1505 return;1506 1507 mce_command_out(ir, FLASH_LED, sizeof(FLASH_LED));1508}1509 1510/*1511 * Workqueue function1512 * for resetting or recovering device after occurrence of error events1513 * specified in ir->kevent bit field.1514 * Function runs (via schedule_work()) in non-interrupt context, for1515 * calls here (such as usb_clear_halt()) requiring non-interrupt context.1516 */1517static void mceusb_deferred_kevent(struct work_struct *work)1518{1519 struct mceusb_dev *ir =1520 container_of(work, struct mceusb_dev, kevent);1521 int status;1522 1523 dev_err(ir->dev, "kevent handler called (flags 0x%lx)",1524 ir->kevent_flags);1525 1526 if (test_bit(EVENT_RST_PEND, &ir->kevent_flags)) {1527 dev_err(ir->dev, "kevent handler canceled pending USB Reset Device");1528 return;1529 }1530 1531 if (test_bit(EVENT_RX_HALT, &ir->kevent_flags)) {1532 usb_unlink_urb(ir->urb_in);1533 status = usb_clear_halt(ir->usbdev, ir->pipe_in);1534 dev_err(ir->dev, "rx clear halt status = %d", status);1535 if (status < 0) {1536 /*1537 * Unable to clear RX halt/stall.1538 * Will need to call usb_reset_device().1539 */1540 dev_err(ir->dev,1541 "stuck RX HALT state requires USB Reset Device to clear");1542 usb_queue_reset_device(ir->usbintf);1543 set_bit(EVENT_RST_PEND, &ir->kevent_flags);1544 clear_bit(EVENT_RX_HALT, &ir->kevent_flags);1545 1546 /* Cancel all other error events and handlers */1547 clear_bit(EVENT_TX_HALT, &ir->kevent_flags);1548 return;1549 }1550 clear_bit(EVENT_RX_HALT, &ir->kevent_flags);1551 status = usb_submit_urb(ir->urb_in, GFP_KERNEL);1552 if (status < 0) {1553 dev_err(ir->dev, "rx unhalt submit urb error = %d",1554 status);1555 }1556 }1557 1558 if (test_bit(EVENT_TX_HALT, &ir->kevent_flags)) {1559 status = usb_clear_halt(ir->usbdev, ir->pipe_out);1560 dev_err(ir->dev, "tx clear halt status = %d", status);1561 if (status < 0) {1562 /*1563 * Unable to clear TX halt/stall.1564 * Will need to call usb_reset_device().1565 */1566 dev_err(ir->dev,1567 "stuck TX HALT state requires USB Reset Device to clear");1568 usb_queue_reset_device(ir->usbintf);1569 set_bit(EVENT_RST_PEND, &ir->kevent_flags);1570 clear_bit(EVENT_TX_HALT, &ir->kevent_flags);1571 1572 /* Cancel all other error events and handlers */1573 clear_bit(EVENT_RX_HALT, &ir->kevent_flags);1574 return;1575 }1576 clear_bit(EVENT_TX_HALT, &ir->kevent_flags);1577 }1578}1579 1580static struct rc_dev *mceusb_init_rc_dev(struct mceusb_dev *ir)1581{1582 struct usb_device *udev = ir->usbdev;1583 struct device *dev = ir->dev;1584 struct rc_dev *rc;1585 int ret;1586 1587 rc = rc_allocate_device(RC_DRIVER_IR_RAW);1588 if (!rc) {1589 dev_err(dev, "remote dev allocation failed");1590 goto out;1591 }1592 1593 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));1594 1595 rc->device_name = mceusb_model[ir->model].name ? :1596 "Media Center Ed. eHome Infrared Remote Transceiver";1597 rc->input_phys = ir->phys;1598 usb_to_input_id(ir->usbdev, &rc->input_id);1599 rc->dev.parent = dev;1600 rc->priv = ir;1601 rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;1602 rc->rx_resolution = MCE_TIME_UNIT;1603 rc->min_timeout = MCE_TIME_UNIT;1604 rc->timeout = MS_TO_US(100);1605 if (!mceusb_model[ir->model].broken_irtimeout) {1606 rc->s_timeout = mceusb_set_timeout;1607 rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT;1608 } else {1609 /*1610 * If we can't set the timeout using CMD_SETIRTIMEOUT, we can1611 * rely on software timeouts for timeouts < 100ms.1612 */1613 rc->max_timeout = rc->timeout;1614 }1615 if (!ir->flags.no_tx) {1616 rc->s_tx_mask = mceusb_set_tx_mask;1617 rc->s_tx_carrier = mceusb_set_tx_carrier;1618 rc->tx_ir = mceusb_tx_ir;1619 }1620 if (ir->flags.rx2 > 0) {1621 rc->s_wideband_receiver = mceusb_set_rx_wideband;1622 rc->s_carrier_report = mceusb_set_rx_carrier_report;1623 }1624 rc->driver_name = DRIVER_NAME;1625 1626 switch (le16_to_cpu(udev->descriptor.idVendor)) {1627 case VENDOR_HAUPPAUGE:1628 rc->map_name = RC_MAP_HAUPPAUGE;1629 break;1630 case VENDOR_PCTV:1631 rc->map_name = RC_MAP_PINNACLE_PCTV_HD;1632 break;1633 default:1634 rc->map_name = RC_MAP_RC6_MCE;1635 }1636 if (mceusb_model[ir->model].rc_map)1637 rc->map_name = mceusb_model[ir->model].rc_map;1638 1639 ret = rc_register_device(rc);1640 if (ret < 0) {1641 dev_err(dev, "remote dev registration failed");1642 goto out;1643 }1644 1645 return rc;1646 1647out:1648 rc_free_device(rc);1649 return NULL;1650}1651 1652static int mceusb_dev_probe(struct usb_interface *intf,1653 const struct usb_device_id *id)1654{1655 struct usb_device *dev = interface_to_usbdev(intf);1656 struct usb_host_interface *idesc;1657 struct usb_endpoint_descriptor *ep = NULL;1658 struct usb_endpoint_descriptor *ep_in = NULL;1659 struct usb_endpoint_descriptor *ep_out = NULL;1660 struct mceusb_dev *ir = NULL;1661 int pipe, maxp, i, res;1662 char buf[63], name[128] = "";1663 enum mceusb_model_type model = id->driver_info;1664 bool is_gen3;1665 bool is_microsoft_gen1;1666 bool tx_mask_normal;1667 int ir_intfnum;1668 1669 dev_dbg(&intf->dev, "%s called", __func__);1670 1671 idesc = intf->cur_altsetting;1672 1673 is_gen3 = mceusb_model[model].mce_gen3;1674 is_microsoft_gen1 = mceusb_model[model].mce_gen1;1675 tx_mask_normal = mceusb_model[model].tx_mask_normal;1676 ir_intfnum = mceusb_model[model].ir_intfnum;1677 1678 /* There are multi-function devices with non-IR interfaces */1679 if (idesc->desc.bInterfaceNumber != ir_intfnum)1680 return -ENODEV;1681 1682 /* step through the endpoints to find first bulk in and out endpoint */1683 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {1684 ep = &idesc->endpoint[i].desc;1685 1686 if (ep_in == NULL) {1687 if (usb_endpoint_is_bulk_in(ep)) {1688 ep_in = ep;1689 dev_dbg(&intf->dev, "acceptable bulk inbound endpoint found\n");1690 } else if (usb_endpoint_is_int_in(ep)) {1691 ep_in = ep;1692 ep_in->bInterval = 1;1693 dev_dbg(&intf->dev, "acceptable interrupt inbound endpoint found\n");1694 }1695 }1696 1697 if (ep_out == NULL) {1698 if (usb_endpoint_is_bulk_out(ep)) {1699 ep_out = ep;1700 dev_dbg(&intf->dev, "acceptable bulk outbound endpoint found\n");1701 } else if (usb_endpoint_is_int_out(ep)) {1702 ep_out = ep;1703 ep_out->bInterval = 1;1704 dev_dbg(&intf->dev, "acceptable interrupt outbound endpoint found\n");1705 }1706 }1707 }1708 if (!ep_in || !ep_out) {1709 dev_dbg(&intf->dev, "required endpoints not found\n");1710 return -ENODEV;1711 }1712 1713 if (usb_endpoint_xfer_int(ep_in))1714 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);1715 else1716 pipe = usb_rcvbulkpipe(dev, ep_in->bEndpointAddress);1717 maxp = usb_maxpacket(dev, pipe);1718 1719 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);1720 if (!ir)1721 goto mem_alloc_fail;1722 1723 ir->pipe_in = pipe;1724 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_KERNEL, &ir->dma_in);1725 if (!ir->buf_in)1726 goto buf_in_alloc_fail;1727 1728 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);1729 if (!ir->urb_in)1730 goto urb_in_alloc_fail;1731 1732 ir->usbintf = intf;1733 ir->usbdev = usb_get_dev(dev);1734 ir->dev = &intf->dev;1735 ir->len_in = maxp;1736 ir->flags.microsoft_gen1 = is_microsoft_gen1;1737 ir->flags.tx_mask_normal = tx_mask_normal;1738 ir->flags.no_tx = mceusb_model[model].no_tx;1739 ir->flags.rx2 = mceusb_model[model].rx2;1740 ir->model = model;1741 1742 /* Saving usb interface data for use by the transmitter routine */1743 ir->usb_ep_out = ep_out;1744 if (usb_endpoint_xfer_int(ep_out))1745 ir->pipe_out = usb_sndintpipe(ir->usbdev,1746 ep_out->bEndpointAddress);1747 else1748 ir->pipe_out = usb_sndbulkpipe(ir->usbdev,1749 ep_out->bEndpointAddress);1750 1751 if (dev->descriptor.iManufacturer1752 && usb_string(dev, dev->descriptor.iManufacturer,1753 buf, sizeof(buf)) > 0)1754 strscpy(name, buf, sizeof(name));1755 if (dev->descriptor.iProduct1756 && usb_string(dev, dev->descriptor.iProduct,1757 buf, sizeof(buf)) > 0)1758 snprintf(name + strlen(name), sizeof(name) - strlen(name),1759 " %s", buf);1760 1761 /*1762 * Initialize async USB error handler before registering1763 * or activating any mceusb RX and TX functions1764 */1765 INIT_WORK(&ir->kevent, mceusb_deferred_kevent);1766 1767 ir->rc = mceusb_init_rc_dev(ir);1768 if (!ir->rc)1769 goto rc_dev_fail;1770 1771 /* wire up inbound data handler */1772 if (usb_endpoint_xfer_int(ep_in))1773 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,1774 mceusb_dev_recv, ir, ep_in->bInterval);1775 else1776 usb_fill_bulk_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,1777 mceusb_dev_recv, ir);1778 1779 ir->urb_in->transfer_dma = ir->dma_in;1780 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;1781 1782 /* flush buffers on the device */1783 dev_dbg(&intf->dev, "Flushing receive buffers");1784 res = usb_submit_urb(ir->urb_in, GFP_KERNEL);1785 if (res)1786 dev_err(&intf->dev, "failed to flush buffers: %d", res);1787 1788 /* figure out which firmware/emulator version this hardware has */1789 mceusb_get_emulator_version(ir);1790 1791 /* initialize device */1792 if (ir->flags.microsoft_gen1)1793 mceusb_gen1_init(ir);1794 else if (!is_gen3)1795 mceusb_gen2_init(ir);1796 1797 mceusb_get_parameters(ir);1798 1799 mceusb_flash_led(ir);1800 1801 if (!ir->flags.no_tx)1802 mceusb_set_tx_mask(ir->rc, MCE_DEFAULT_TX_MASK);1803 1804 usb_set_intfdata(intf, ir);1805 1806 /* enable wake via this device */1807 device_set_wakeup_capable(ir->dev, true);1808 device_set_wakeup_enable(ir->dev, true);1809 1810 dev_info(&intf->dev, "Registered %s with mce emulator interface version %x",1811 name, ir->emver);1812 dev_info(&intf->dev, "%x tx ports (0x%x cabled) and %x rx sensors (0x%x active)",1813 ir->num_txports, ir->txports_cabled,1814 ir->num_rxports, ir->rxports_active);1815 1816 return 0;1817 1818 /* Error-handling path */1819rc_dev_fail:1820 cancel_work_sync(&ir->kevent);1821 usb_put_dev(ir->usbdev);1822 usb_kill_urb(ir->urb_in);1823 usb_free_urb(ir->urb_in);1824urb_in_alloc_fail:1825 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in);1826buf_in_alloc_fail:1827 kfree(ir);1828mem_alloc_fail:1829 dev_err(&intf->dev, "%s: device setup failed!", __func__);1830 1831 return -ENOMEM;1832}1833 1834 1835static void mceusb_dev_disconnect(struct usb_interface *intf)1836{1837 struct usb_device *dev = interface_to_usbdev(intf);1838 struct mceusb_dev *ir = usb_get_intfdata(intf);1839 1840 dev_dbg(&intf->dev, "%s called", __func__);1841 1842 usb_set_intfdata(intf, NULL);1843 1844 if (!ir)1845 return;1846 1847 ir->usbdev = NULL;1848 cancel_work_sync(&ir->kevent);1849 rc_unregister_device(ir->rc);1850 usb_kill_urb(ir->urb_in);1851 usb_free_urb(ir->urb_in);1852 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);1853 usb_put_dev(dev);1854 1855 kfree(ir);1856}1857 1858static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message)1859{1860 struct mceusb_dev *ir = usb_get_intfdata(intf);1861 dev_info(ir->dev, "suspend");1862 usb_kill_urb(ir->urb_in);1863 return 0;1864}1865 1866static int mceusb_dev_resume(struct usb_interface *intf)1867{1868 struct mceusb_dev *ir = usb_get_intfdata(intf);1869 dev_info(ir->dev, "resume");1870 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))1871 return -EIO;1872 return 0;1873}1874 1875static struct usb_driver mceusb_dev_driver = {1876 .name = DRIVER_NAME,1877 .probe = mceusb_dev_probe,1878 .disconnect = mceusb_dev_disconnect,1879 .suspend = mceusb_dev_suspend,1880 .resume = mceusb_dev_resume,1881 .reset_resume = mceusb_dev_resume,1882 .id_table = mceusb_dev_table1883};1884 1885module_usb_driver(mceusb_dev_driver);1886 1887MODULE_DESCRIPTION(DRIVER_DESC);1888MODULE_AUTHOR(DRIVER_AUTHOR);1889MODULE_LICENSE("GPL");1890MODULE_DEVICE_TABLE(usb, mceusb_dev_table);1891