drivers/media/IR/mceusb.c

   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/input.h>
  40 #include <media/ir-core.h>
  41 #include <media/ir-common.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_PACKET_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */
  59 #define MCE_CONTROL_HEADER 0x9F /* MCE status header */
  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 /* Val opts: 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 #define MCE_PACKET_LENGTH_MASK  0x1F /* Packet length mask */
  67
  68
  69 /* module parameters */
  70 #ifdef CONFIG_USB_DEBUG
  71 static int debug = 1;
  72 #else
  73 static int debug;
  74 #endif
  75
  76 /* general constants */
  77 #define SEND_FLAG_IN_PROGRESS   1
  78 #define SEND_FLAG_COMPLETE      2
  79 #define RECV_FLAG_IN_PROGRESS   3
  80 #define RECV_FLAG_COMPLETE      4
  81
  82 #define MCEUSB_RX               1
  83 #define MCEUSB_TX               2
  84
  85 #define VENDOR_PHILIPS          0x0471
  86 #define VENDOR_SMK              0x0609
  87 #define VENDOR_TATUNG           0x1460
  88 #define VENDOR_GATEWAY          0x107b
  89 #define VENDOR_SHUTTLE          0x1308
  90 #define VENDOR_SHUTTLE2         0x051c
  91 #define VENDOR_MITSUMI          0x03ee
  92 #define VENDOR_TOPSEED          0x1784
  93 #define VENDOR_RICAVISION       0x179d
  94 #define VENDOR_ITRON            0x195d
  95 #define VENDOR_FIC              0x1509
  96 #define VENDOR_LG               0x043e
  97 #define VENDOR_MICROSOFT        0x045e
  98 #define VENDOR_FORMOSA          0x147a
  99 #define VENDOR_FINTEK           0x1934
 100 #define VENDOR_PINNACLE         0x2304
 101 #define VENDOR_ECS              0x1019
 102 #define VENDOR_WISTRON          0x0fb8
 103 #define VENDOR_COMPRO           0x185b
 104 #define VENDOR_NORTHSTAR        0x04eb
 105 #define VENDOR_REALTEK          0x0bda
 106 #define VENDOR_TIVO             0x105a
 107
 108 static struct usb_device_id mceusb_dev_table[] = {
 109         /* Original Microsoft MCE IR Transceiver (often HP-branded) */
 110         { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
 111         /* Philips Infrared Transceiver - Sahara branded */
 112         { USB_DEVICE(VENDOR_PHILIPS, 0x0608) },
 113         /* Philips Infrared Transceiver - HP branded */
 114         { USB_DEVICE(VENDOR_PHILIPS, 0x060c) },
 115         /* Philips SRM5100 */
 116         { USB_DEVICE(VENDOR_PHILIPS, 0x060d) },
 117         /* Philips Infrared Transceiver - Omaura */
 118         { USB_DEVICE(VENDOR_PHILIPS, 0x060f) },
 119         /* Philips Infrared Transceiver - Spinel plus */
 120         { USB_DEVICE(VENDOR_PHILIPS, 0x0613) },
 121         /* Philips eHome Infrared Transceiver */
 122         { USB_DEVICE(VENDOR_PHILIPS, 0x0815) },
 123         /* Philips/Spinel plus IR transceiver for ASUS */
 124         { USB_DEVICE(VENDOR_PHILIPS, 0x206c) },
 125         /* Philips/Spinel plus IR transceiver for ASUS */
 126         { USB_DEVICE(VENDOR_PHILIPS, 0x2088) },
 127         /* Realtek MCE IR Receiver */
 128         { USB_DEVICE(VENDOR_REALTEK, 0x0161) },
 129         /* SMK/Toshiba G83C0004D410 */
 130         { USB_DEVICE(VENDOR_SMK, 0x031d) },
 131         /* SMK eHome Infrared Transceiver (Sony VAIO) */
 132         { USB_DEVICE(VENDOR_SMK, 0x0322) },
 133         /* bundled with Hauppauge PVR-150 */
 134         { USB_DEVICE(VENDOR_SMK, 0x0334) },
 135         /* SMK eHome Infrared Transceiver */
 136         { USB_DEVICE(VENDOR_SMK, 0x0338) },
 137         /* Tatung eHome Infrared Transceiver */
 138         { USB_DEVICE(VENDOR_TATUNG, 0x9150) },
 139         /* Shuttle eHome Infrared Transceiver */
 140         { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) },
 141         /* Shuttle eHome Infrared Transceiver */
 142         { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) },
 143         /* Gateway eHome Infrared Transceiver */
 144         { USB_DEVICE(VENDOR_GATEWAY, 0x3009) },
 145         /* Mitsumi */
 146         { USB_DEVICE(VENDOR_MITSUMI, 0x2501) },
 147         /* Topseed eHome Infrared Transceiver */
 148         { USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
 149         /* Topseed HP eHome Infrared Transceiver */
 150         { USB_DEVICE(VENDOR_TOPSEED, 0x0006) },
 151         /* Topseed eHome Infrared Transceiver */
 152         { USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
 153         /* Topseed eHome Infrared Transceiver */
 154         { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
 155         /* Topseed eHome Infrared Transceiver */
 156         { USB_DEVICE(VENDOR_TOPSEED, 0x000a) },
 157         /* Topseed eHome Infrared Transceiver */
 158         { USB_DEVICE(VENDOR_TOPSEED, 0x0011) },
 159         /* Ricavision internal Infrared Transceiver */
 160         { USB_DEVICE(VENDOR_RICAVISION, 0x0010) },
 161         /* Itron ione Libra Q-11 */
 162         { USB_DEVICE(VENDOR_ITRON, 0x7002) },
 163         /* FIC eHome Infrared Transceiver */
 164         { USB_DEVICE(VENDOR_FIC, 0x9242) },
 165         /* LG eHome Infrared Transceiver */
 166         { USB_DEVICE(VENDOR_LG, 0x9803) },
 167         /* Microsoft MCE Infrared Transceiver */
 168         { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) },
 169         /* Formosa eHome Infrared Transceiver */
 170         { USB_DEVICE(VENDOR_FORMOSA, 0xe015) },
 171         /* Formosa21 / eHome Infrared Receiver */
 172         { USB_DEVICE(VENDOR_FORMOSA, 0xe016) },
 173         /* Formosa aim / Trust MCE Infrared Receiver */
 174         { USB_DEVICE(VENDOR_FORMOSA, 0xe017) },
 175         /* Formosa Industrial Computing / Beanbag Emulation Device */
 176         { USB_DEVICE(VENDOR_FORMOSA, 0xe018) },
 177         /* Formosa21 / eHome Infrared Receiver */
 178         { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) },
 179         /* Formosa Industrial Computing AIM IR605/A */
 180         { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) },
 181         /* Formosa Industrial Computing */
 182         { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) },
 183         /* Fintek eHome Infrared Transceiver */
 184         { USB_DEVICE(VENDOR_FINTEK, 0x0602) },
 185         /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */
 186         { USB_DEVICE(VENDOR_FINTEK, 0x0702) },
 187         /* Pinnacle Remote Kit */
 188         { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
 189         /* Elitegroup Computer Systems IR */
 190         { USB_DEVICE(VENDOR_ECS, 0x0f38) },
 191         /* Wistron Corp. eHome Infrared Receiver */
 192         { USB_DEVICE(VENDOR_WISTRON, 0x0002) },
 193         /* Compro K100 */
 194         { USB_DEVICE(VENDOR_COMPRO, 0x3020) },
 195         /* Compro K100 v2 */
 196         { USB_DEVICE(VENDOR_COMPRO, 0x3082) },
 197         /* Northstar Systems, Inc. eHome Infrared Transceiver */
 198         { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) },
 199         /* TiVo PC IR Receiver */
 200         { USB_DEVICE(VENDOR_TIVO, 0x2000) },
 201         /* Terminating entry */
 202         { }
 203 };
 204
 205 static struct usb_device_id gen3_list[] = {
 206         { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
 207         { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
 208         {}
 209 };
 210
 211 static struct usb_device_id microsoft_gen1_list[] = {
 212         { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
 213         {}
 214 };
 215
 216 static struct usb_device_id std_tx_mask_list[] = {
 217         { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
 218         { USB_DEVICE(VENDOR_PHILIPS, 0x060c) },
 219         { USB_DEVICE(VENDOR_SMK, 0x031d) },
 220         { USB_DEVICE(VENDOR_SMK, 0x0322) },
 221         { USB_DEVICE(VENDOR_SMK, 0x0334) },
 222         { USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
 223         { USB_DEVICE(VENDOR_TOPSEED, 0x0006) },
 224         { USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
 225         { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
 226         { USB_DEVICE(VENDOR_TOPSEED, 0x000a) },
 227         { USB_DEVICE(VENDOR_TOPSEED, 0x0011) },
 228         { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
 229         {}
 230 };
 231
 232 /* data structure for each usb transceiver */
 233 struct mceusb_dev {
 234         /* ir-core bits */
 235         struct ir_dev_props *props;
 236         struct ir_raw_event rawir;
 237
 238         /* core device bits */
 239         struct device *dev;
 240         struct input_dev *idev;
 241
 242         /* usb */
 243         struct usb_device *usbdev;
 244         struct urb *urb_in;
 245         struct usb_endpoint_descriptor *usb_ep_in;
 246         struct usb_endpoint_descriptor *usb_ep_out;
 247
 248         /* buffers and dma */
 249         unsigned char *buf_in;
 250         unsigned int len_in;
 251         u8 cmd;         /* MCE command type */
 252         u8 rem;         /* Remaining IR data bytes in packet */
 253         dma_addr_t dma_in;
 254         dma_addr_t dma_out;
 255
 256         struct {
 257                 u32 connected:1;
 258                 u32 tx_mask_inverted:1;
 259                 u32 microsoft_gen1:1;
 260                 u32 reserved:29;
 261         } flags;
 262
 263         /* transmit support */
 264         int send_flags;
 265         u32 carrier;
 266         unsigned char tx_mask;
 267
 268         char name[128];
 269         char phys[64];
 270 };
 271
 272 /*
 273  * MCE Device Command Strings
 274  * Device command responses vary from device to device...
 275  * - DEVICE_RESET resets the hardware to its default state
 276  * - GET_REVISION fetches the hardware/software revision, common
 277  *   replies are ff 0b 45 ff 1b 08 and ff 0b 50 ff 1b 42
 278  * - GET_CARRIER_FREQ gets the carrier mode and frequency of the
 279  *   device, with replies in the form of 9f 06 MM FF, where MM is 0-3,
 280  *   meaning clk of 10000000, 2500000, 625000 or 156250, and FF is
 281  *   ((clk / frequency) - 1)
 282  * - GET_RX_TIMEOUT fetches the receiver timeout in units of 50us,
 283  *   response in the form of 9f 0c msb lsb
 284  * - GET_TX_BITMASK fetches the transmitter bitmask, replies in
 285  *   the form of 9f 08 bm, where bm is the bitmask
 286  * - GET_RX_SENSOR fetches the RX sensor setting -- long-range
 287  *   general use one or short-range learning one, in the form of
 288  *   9f 14 ss, where ss is either 01 for long-range or 02 for short
 289  * - SET_CARRIER_FREQ sets a new carrier mode and frequency
 290  * - SET_TX_BITMASK sets the transmitter bitmask
 291  * - SET_RX_TIMEOUT sets the receiver timeout
 292  * - SET_RX_SENSOR sets which receiver sensor to use
 293  */
 294 static char DEVICE_RESET[]      = {0x00, 0xff, 0xaa};
 295 static char GET_REVISION[]      = {0xff, 0x0b};
 296 static char GET_UNKNOWN[]       = {0xff, 0x18};
 297 static char GET_UNKNOWN2[]      = {0x9f, 0x05};
 298 static char GET_CARRIER_FREQ[]  = {0x9f, 0x07};
 299 static char GET_RX_TIMEOUT[]    = {0x9f, 0x0d};
 300 static char GET_TX_BITMASK[]    = {0x9f, 0x13};
 301 static char GET_RX_SENSOR[]     = {0x9f, 0x15};
 302 /* sub in desired values in lower byte or bytes for full command */
 303 /* FIXME: make use of these for transmit.
 304 static char SET_CARRIER_FREQ[]  = {0x9f, 0x06, 0x00, 0x00};
 305 static char SET_TX_BITMASK[]    = {0x9f, 0x08, 0x00};
 306 static char SET_RX_TIMEOUT[]    = {0x9f, 0x0c, 0x00, 0x00};
 307 static char SET_RX_SENSOR[]     = {0x9f, 0x14, 0x00};
 308 */
 309
 310 static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf,
 311                                  int len, bool out)
 312 {
 313         char codes[USB_BUFLEN * 3 + 1];
 314         char inout[9];
 315         int i;
 316         u8 cmd, subcmd, data1, data2;
 317         struct device *dev = ir->dev;
 318         int idx = 0;
 319
 320         /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
 321         if (ir->flags.microsoft_gen1 && !out)
 322                 idx = 2;
 323
 324         if (len <= idx)
 325                 return;
 326
 327         for (i = 0; i < len && i < USB_BUFLEN; i++)
 328                 snprintf(codes + i * 3, 4, "%02x ", buf[i] & 0xFF);
 329
 330         dev_info(dev, "%sx data: %s (length=%d)\n",
 331                  (out ? "t" : "r"), codes, len);
 332
 333         if (out)
 334                 strcpy(inout, "Request\0");
 335         else
 336                 strcpy(inout, "Got\0");
 337
 338         cmd    = buf[idx] & 0xff;
 339         subcmd = buf[idx + 1] & 0xff;
 340         data1  = buf[idx + 2] & 0xff;
 341         data2  = buf[idx + 3] & 0xff;
 342
 343         switch (cmd) {
 344         case 0x00:
 345                 if (subcmd == 0xff && data1 == 0xaa)
 346                         dev_info(dev, "Device reset requested\n");
 347                 else
 348                         dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
 349                                  cmd, subcmd);
 350                 break;
 351         case 0xff:
 352                 switch (subcmd) {
 353                 case 0x0b:
 354                         if (len == 2)
 355                                 dev_info(dev, "Get hw/sw rev?\n");
 356                         else
 357                                 dev_info(dev, "hw/sw rev 0x%02x 0x%02x "
 358                                          "0x%02x 0x%02x\n", data1, data2,
 359                                          buf[idx + 4], buf[idx + 5]);
 360                         break;
 361                 case 0xaa:
 362                         dev_info(dev, "Device reset requested\n");
 363                         break;
 364                 case 0xfe:
 365                         dev_info(dev, "Previous command not supported\n");
 366                         break;
 367                 case 0x18:
 368                 case 0x1b:
 369                 default:
 370                         dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
 371                                  cmd, subcmd);
 372                         break;
 373                 }
 374                 break;
 375         case 0x9f:
 376                 switch (subcmd) {
 377                 case 0x03:
 378                         dev_info(dev, "Ping\n");
 379                         break;
 380                 case 0x04:
 381                         dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n",
 382                                  data1, data2);
 383                         break;
 384                 case 0x06:
 385                         dev_info(dev, "%s carrier mode and freq of "
 386                                  "0x%02x 0x%02x\n", inout, data1, data2);
 387                         break;
 388                 case 0x07:
 389                         dev_info(dev, "Get carrier mode and freq\n");
 390                         break;
 391                 case 0x08:
 392                         dev_info(dev, "%s transmit blaster mask of 0x%02x\n",
 393                                  inout, data1);
 394                         break;
 395                 case 0x0c:
 396                         /* value is in units of 50us, so x*50/100 or x/2 ms */
 397                         dev_info(dev, "%s receive timeout of %d ms\n",
 398                                  inout, ((data1 << 8) | data2) / 2);
 399                         break;
 400                 case 0x0d:
 401                         dev_info(dev, "Get receive timeout\n");
 402                         break;
 403                 case 0x13:
 404                         dev_info(dev, "Get transmit blaster mask\n");
 405                         break;
 406                 case 0x14:
 407                         dev_info(dev, "%s %s-range receive sensor in use\n",
 408                                  inout, data1 == 0x02 ? "short" : "long");
 409                         break;
 410                 case 0x15:
 411                         if (len == 2)
 412                                 dev_info(dev, "Get receive sensor\n");
 413                         else
 414                                 dev_info(dev, "Received pulse count is %d\n",
 415                                          ((data1 << 8) | data2));
 416                         break;
 417                 case 0xfe:
 418                         dev_info(dev, "Error! Hardware is likely wedged...\n");
 419                         break;
 420                 case 0x05:
 421                 case 0x09:
 422                 case 0x0f:
 423                 default:
 424                         dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
 425                                  cmd, subcmd);
 426                         break;
 427                 }
 428                 break;
 429         default:
 430                 break;
 431         }
 432 }
 433
 434 static void mce_async_callback(struct urb *urb, struct pt_regs *regs)
 435 {
 436         struct mceusb_dev *ir;
 437         int len;
 438
 439         if (!urb)
 440                 return;
 441
 442         ir = urb->context;
 443         if (ir) {
 444                 len = urb->actual_length;
 445
 446                 dev_dbg(ir->dev, "callback called (status=%d len=%d)\n",
 447                         urb->status, len);
 448
 449                 if (debug)
 450                         mceusb_dev_printdata(ir, urb->transfer_buffer,
 451                                              len, true);
 452         }
 453
 454 }
 455
 456 /* request incoming or send outgoing usb packet - used to initialize remote */
 457 static void mce_request_packet(struct mceusb_dev *ir,
 458                                struct usb_endpoint_descriptor *ep,
 459                                unsigned char *data, int size, int urb_type)
 460 {
 461         int res;
 462         struct urb *async_urb;
 463         struct device *dev = ir->dev;
 464         unsigned char *async_buf;
 465
 466         if (urb_type == MCEUSB_TX) {
 467                 async_urb = usb_alloc_urb(0, GFP_KERNEL);
 468                 if (unlikely(!async_urb)) {
 469                         dev_err(dev, "Error, couldn't allocate urb!\n");
 470                         return;
 471                 }
 472
 473                 async_buf = kzalloc(size, GFP_KERNEL);
 474                 if (!async_buf) {
 475                         dev_err(dev, "Error, couldn't allocate buf!\n");
 476                         usb_free_urb(async_urb);
 477                         return;
 478                 }
 479
 480                 /* outbound data */
 481                 usb_fill_int_urb(async_urb, ir->usbdev,
 482                         usb_sndintpipe(ir->usbdev, ep->bEndpointAddress),
 483                         async_buf, size, (usb_complete_t)mce_async_callback,
 484                         ir, ep->bInterval);
 485                 memcpy(async_buf, data, size);
 486
 487         } else if (urb_type == MCEUSB_RX) {
 488                 /* standard request */
 489                 async_urb = ir->urb_in;
 490                 ir->send_flags = RECV_FLAG_IN_PROGRESS;
 491
 492         } else {
 493                 dev_err(dev, "Error! Unknown urb type %d\n", urb_type);
 494                 return;
 495         }
 496
 497         dev_dbg(dev, "receive request called (size=%#x)\n", size);
 498
 499         async_urb->transfer_buffer_length = size;
 500         async_urb->dev = ir->usbdev;
 501
 502         res = usb_submit_urb(async_urb, GFP_ATOMIC);
 503         if (res) {
 504                 dev_dbg(dev, "receive request FAILED! (res=%d)\n", res);
 505                 return;
 506         }
 507         dev_dbg(dev, "receive request complete (res=%d)\n", res);
 508 }
 509
 510 static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size)
 511 {
 512         mce_request_packet(ir, ir->usb_ep_out, data, size, MCEUSB_TX);
 513 }
 514
 515 static void mce_sync_in(struct mceusb_dev *ir, unsigned char *data, int size)
 516 {
 517         mce_request_packet(ir, ir->usb_ep_in, data, size, MCEUSB_RX);
 518 }
 519
 520 /* Send data out the IR blaster port(s) */
 521 static int mceusb_tx_ir(void *priv, int *txbuf, u32 n)
 522 {
 523         struct mceusb_dev *ir = priv;
 524         int i, ret = 0;
 525         int count, cmdcount = 0;
 526         unsigned char *cmdbuf; /* MCE command buffer */
 527         long signal_duration = 0; /* Singnal length in us */
 528         struct timeval start_time, end_time;
 529
 530         do_gettimeofday(&start_time);
 531
 532         count = n / sizeof(int);
 533
 534         cmdbuf = kzalloc(sizeof(int) * MCE_CMDBUF_SIZE, GFP_KERNEL);
 535         if (!cmdbuf)
 536                 return -ENOMEM;
 537
 538         /* MCE tx init header */
 539         cmdbuf[cmdcount++] = MCE_CONTROL_HEADER;
 540         cmdbuf[cmdcount++] = 0x08;
 541         cmdbuf[cmdcount++] = ir->tx_mask;
 542
 543         /* Generate mce packet data */
 544         for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) {
 545                 signal_duration += txbuf[i];
 546                 txbuf[i] = txbuf[i] / MCE_TIME_UNIT;
 547
 548                 do { /* loop to support long pulses/spaces > 127*50us=6.35ms */
 549
 550                         /* Insert mce packet header every 4th entry */
 551                         if ((cmdcount < MCE_CMDBUF_SIZE) &&
 552                             (cmdcount - MCE_TX_HEADER_LENGTH) %
 553                              MCE_CODE_LENGTH == 0)
 554                                 cmdbuf[cmdcount++] = MCE_PACKET_HEADER;
 555
 556                         /* Insert mce packet data */
 557                         if (cmdcount < MCE_CMDBUF_SIZE)
 558                                 cmdbuf[cmdcount++] =
 559                                         (txbuf[i] < MCE_PULSE_BIT ?
 560                                          txbuf[i] : MCE_MAX_PULSE_LENGTH) |
 561                                          (i & 1 ? 0x00 : MCE_PULSE_BIT);
 562                         else {
 563                                 ret = -EINVAL;
 564                                 goto out;
 565                         }
 566
 567                 } while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) &&
 568                          (txbuf[i] -= MCE_MAX_PULSE_LENGTH));
 569         }
 570
 571         /* Fix packet length in last header */
 572         cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] =
 573                 0x80 + (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH - 1;
 574
 575         /* Check if we have room for the empty packet at the end */
 576         if (cmdcount >= MCE_CMDBUF_SIZE) {
 577                 ret = -EINVAL;
 578                 goto out;
 579         }
 580
 581         /* All mce commands end with an empty packet (0x80) */
 582         cmdbuf[cmdcount++] = 0x80;
 583
 584         /* Transmit the command to the mce device */
 585         mce_async_out(ir, cmdbuf, cmdcount);
 586
 587         /*
 588          * The lircd gap calculation expects the write function to
 589          * wait the time it takes for the ircommand to be sent before
 590          * it returns.
 591          */
 592         do_gettimeofday(&end_time);
 593         signal_duration -= (end_time.tv_usec - start_time.tv_usec) +
 594                            (end_time.tv_sec - start_time.tv_sec) * 1000000;
 595
 596         /* delay with the closest number of ticks */
 597         set_current_state(TASK_INTERRUPTIBLE);
 598         schedule_timeout(usecs_to_jiffies(signal_duration));
 599
 600 out:
 601         kfree(cmdbuf);
 602         return ret ? ret : n;
 603 }
 604
 605 /* Sets active IR outputs -- mce devices typically (all?) have two */
 606 static int mceusb_set_tx_mask(void *priv, u32 mask)
 607 {
 608         struct mceusb_dev *ir = priv;
 609
 610         if (ir->flags.tx_mask_inverted)
 611                 ir->tx_mask = (mask != 0x03 ? mask ^ 0x03 : mask) << 1;
 612         else
 613                 ir->tx_mask = mask;
 614
 615         return 0;
 616 }
 617
 618 /* Sets the send carrier frequency and mode */
 619 static int mceusb_set_tx_carrier(void *priv, u32 carrier)
 620 {
 621         struct mceusb_dev *ir = priv;
 622         int clk = 10000000;
 623         int prescaler = 0, divisor = 0;
 624         unsigned char cmdbuf[4] = { 0x9f, 0x06, 0x00, 0x00 };
 625
 626         /* Carrier has changed */
 627         if (ir->carrier != carrier) {
 628
 629                 if (carrier == 0) {
 630                         ir->carrier = carrier;
 631                         cmdbuf[2] = 0x01;
 632                         cmdbuf[3] = 0x80;
 633                         dev_dbg(ir->dev, "%s: disabling carrier "
 634                                 "modulation\n", __func__);
 635                         mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
 636                         return carrier;
 637                 }
 638
 639                 for (prescaler = 0; prescaler < 4; ++prescaler) {
 640                         divisor = (clk >> (2 * prescaler)) / carrier;
 641                         if (divisor <= 0xFF) {
 642                                 ir->carrier = carrier;
 643                                 cmdbuf[2] = prescaler;
 644                                 cmdbuf[3] = divisor;
 645                                 dev_dbg(ir->dev, "%s: requesting %u HZ "
 646                                         "carrier\n", __func__, carrier);
 647
 648                                 /* Transmit new carrier to mce device */
 649                                 mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
 650                                 return carrier;
 651                         }
 652                 }
 653
 654                 return -EINVAL;
 655
 656         }
 657
 658         return carrier;
 659 }
 660
 661 static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
 662 {
 663         DEFINE_IR_RAW_EVENT(rawir);
 664         int i, start_index = 0;
 665         u8 hdr = MCE_CONTROL_HEADER;
 666
 667         /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
 668         if (ir->flags.microsoft_gen1)
 669                 start_index = 2;
 670
 671         for (i = start_index; i < buf_len;) {
 672                 if (ir->rem == 0) {
 673                         /* decode mce packets of the form (84),AA,BB,CC,DD */
 674                         /* IR data packets can span USB messages - rem */
 675                         hdr = ir->buf_in[i];
 676                         ir->rem = (hdr & MCE_PACKET_LENGTH_MASK);
 677                         ir->cmd = (hdr & ~MCE_PACKET_LENGTH_MASK);
 678                         dev_dbg(ir->dev, "New data. rem: 0x%02x, cmd: 0x%02x\n",
 679                                 ir->rem, ir->cmd);
 680                         i++;
 681                 }
 682
 683                 /* don't process MCE commands */
 684                 if (hdr == MCE_CONTROL_HEADER || hdr == 0xff) {
 685                         ir->rem = 0;
 686                         return;
 687                 }
 688
 689                 for (; (ir->rem > 0) && (i < buf_len); i++) {
 690                         ir->rem--;
 691
 692                         rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);
 693                         rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK)
 694                                          * MCE_TIME_UNIT * 1000;
 695
 696                         if ((ir->buf_in[i] & MCE_PULSE_MASK) == 0x7f) {
 697                                 if (ir->rawir.pulse == rawir.pulse)
 698                                         ir->rawir.duration += rawir.duration;
 699                                 else {
 700                                         ir->rawir.duration = rawir.duration;
 701                                         ir->rawir.pulse = rawir.pulse;
 702                                 }
 703                                 continue;
 704                         }
 705                         rawir.duration += ir->rawir.duration;
 706                         ir->rawir.duration = 0;
 707                         ir->rawir.pulse = rawir.pulse;
 708
 709                         dev_dbg(ir->dev, "Storing %s with duration %d\n",
 710                                 rawir.pulse ? "pulse" : "space",
 711                                 rawir.duration);
 712
 713                         ir_raw_event_store(ir->idev, &rawir);
 714                 }
 715
 716                 if (ir->buf_in[i] == 0x80 || ir->buf_in[i] == 0x9f)
 717                         ir->rem = 0;
 718
 719                 dev_dbg(ir->dev, "calling ir_raw_event_handle\n");
 720                 ir_raw_event_handle(ir->idev);
 721         }
 722 }
 723
 724 static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs)
 725 {
 726         struct mceusb_dev *ir;
 727         int buf_len;
 728
 729         if (!urb)
 730                 return;
 731
 732         ir = urb->context;
 733         if (!ir) {
 734                 usb_unlink_urb(urb);
 735                 return;
 736         }
 737
 738         buf_len = urb->actual_length;
 739
 740         if (debug)
 741                 mceusb_dev_printdata(ir, urb->transfer_buffer, buf_len, false);
 742
 743         if (ir->send_flags == RECV_FLAG_IN_PROGRESS) {
 744                 ir->send_flags = SEND_FLAG_COMPLETE;
 745                 dev_dbg(ir->dev, "setup answer received %d bytes\n",
 746                         buf_len);
 747         }
 748
 749         switch (urb->status) {
 750         /* success */
 751         case 0:
 752                 mceusb_process_ir_data(ir, buf_len);
 753                 break;
 754
 755         case -ECONNRESET:
 756         case -ENOENT:
 757         case -ESHUTDOWN:
 758                 usb_unlink_urb(urb);
 759                 return;
 760
 761         case -EPIPE:
 762         default:
 763                 break;
 764         }
 765
 766         usb_submit_urb(urb, GFP_ATOMIC);
 767 }
 768
 769 static void mceusb_gen1_init(struct mceusb_dev *ir)
 770 {
 771         int ret;
 772         int maxp = ir->len_in;
 773         struct device *dev = ir->dev;
 774         char *data;
 775
 776         data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL);
 777         if (!data) {
 778                 dev_err(dev, "%s: memory allocation failed!\n", __func__);
 779                 return;
 780         }
 781
 782         /*
 783          * This is a strange one. Windows issues a set address to the device
 784          * on the receive control pipe and expect a certain value pair back
 785          */
 786         ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
 787                               USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
 788                               data, USB_CTRL_MSG_SZ, HZ * 3);
 789         dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
 790         dev_dbg(dev, "%s - data[0] = %d, data[1] = %d\n",
 791                 __func__, data[0], data[1]);
 792
 793         /* set feature: bit rate 38400 bps */
 794         ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
 795                               USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
 796                               0xc04e, 0x0000, NULL, 0, HZ * 3);
 797
 798         dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
 799
 800         /* bRequest 4: set char length to 8 bits */
 801         ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
 802                               4, USB_TYPE_VENDOR,
 803                               0x0808, 0x0000, NULL, 0, HZ * 3);
 804         dev_dbg(dev, "%s - retB = %d\n", __func__, ret);
 805
 806         /* bRequest 2: set handshaking to use DTR/DSR */
 807         ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
 808                               2, USB_TYPE_VENDOR,
 809                               0x0000, 0x0100, NULL, 0, HZ * 3);
 810         dev_dbg(dev, "%s - retC = %d\n", __func__, ret);
 811
 812         /* device reset */
 813         mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
 814         mce_sync_in(ir, NULL, maxp);
 815
 816         /* get hw/sw revision? */
 817         mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
 818         mce_sync_in(ir, NULL, maxp);
 819
 820         kfree(data);
 821 };
 822
 823 static void mceusb_gen2_init(struct mceusb_dev *ir)
 824 {
 825         int maxp = ir->len_in;
 826
 827         /* device reset */
 828         mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
 829         mce_sync_in(ir, NULL, maxp);
 830
 831         /* get hw/sw revision? */
 832         mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
 833         mce_sync_in(ir, NULL, maxp);
 834
 835         /* unknown what the next two actually return... */
 836         mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN));
 837         mce_sync_in(ir, NULL, maxp);
 838         mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2));
 839         mce_sync_in(ir, NULL, maxp);
 840 }
 841
 842 static void mceusb_get_parameters(struct mceusb_dev *ir)
 843 {
 844         int maxp = ir->len_in;
 845
 846         /* get the carrier and frequency */
 847         mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));
 848         mce_sync_in(ir, NULL, maxp);
 849
 850         /* get the transmitter bitmask */
 851         mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
 852         mce_sync_in(ir, NULL, maxp);
 853
 854         /* get receiver timeout value */
 855         mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
 856         mce_sync_in(ir, NULL, maxp);
 857
 858         /* get receiver sensor setting */
 859         mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));
 860         mce_sync_in(ir, NULL, maxp);
 861 }
 862
 863 static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir)
 864 {
 865         struct input_dev *idev;
 866         struct ir_dev_props *props;
 867         struct device *dev = ir->dev;
 868         int ret = -ENODEV;
 869
 870         idev = input_allocate_device();
 871         if (!idev) {
 872                 dev_err(dev, "remote input dev allocation failed\n");
 873                 goto idev_alloc_failed;
 874         }
 875
 876         ret = -ENOMEM;
 877         props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL);
 878         if (!props) {
 879                 dev_err(dev, "remote ir dev props allocation failed\n");
 880                 goto props_alloc_failed;
 881         }
 882
 883         snprintf(ir->name, sizeof(ir->name), "Media Center Ed. eHome "
 884                  "Infrared Remote Transceiver (%04x:%04x)",
 885                  le16_to_cpu(ir->usbdev->descriptor.idVendor),
 886                  le16_to_cpu(ir->usbdev->descriptor.idProduct));
 887
 888         idev->name = ir->name;
 889         usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));
 890         strlcat(ir->phys, "/input0", sizeof(ir->phys));
 891         idev->phys = ir->phys;
 892
 893         props->priv = ir;
 894         props->driver_type = RC_DRIVER_IR_RAW;
 895         props->allowed_protos = IR_TYPE_ALL;
 896         props->s_tx_mask = mceusb_set_tx_mask;
 897         props->s_tx_carrier = mceusb_set_tx_carrier;
 898         props->tx_ir = mceusb_tx_ir;
 899
 900         ir->props = props;
 901
 902         ret = ir_input_register(idev, RC_MAP_RC6_MCE, props, DRIVER_NAME);
 903         if (ret < 0) {
 904                 dev_err(dev, "remote input device register failed\n");
 905                 goto irdev_failed;
 906         }
 907
 908         return idev;
 909
 910 irdev_failed:
 911         kfree(props);
 912 props_alloc_failed:
 913         input_free_device(idev);
 914 idev_alloc_failed:
 915         return NULL;
 916 }
 917
 918 static int __devinit mceusb_dev_probe(struct usb_interface *intf,
 919                                       const struct usb_device_id *id)
 920 {
 921         struct usb_device *dev = interface_to_usbdev(intf);
 922         struct usb_host_interface *idesc;
 923         struct usb_endpoint_descriptor *ep = NULL;
 924         struct usb_endpoint_descriptor *ep_in = NULL;
 925         struct usb_endpoint_descriptor *ep_out = NULL;
 926         struct mceusb_dev *ir = NULL;
 927         int pipe, maxp, i;
 928         char buf[63], name[128] = "";
 929         bool is_gen3;
 930         bool is_microsoft_gen1;
 931         bool tx_mask_inverted;
 932
 933         dev_dbg(&intf->dev, ": %s called\n", __func__);
 934
 935         idesc  = intf->cur_altsetting;
 936
 937         is_gen3 = usb_match_id(intf, gen3_list) ? 1 : 0;
 938         is_microsoft_gen1 = usb_match_id(intf, microsoft_gen1_list) ? 1 : 0;
 939         tx_mask_inverted = usb_match_id(intf, std_tx_mask_list) ? 0 : 1;
 940
 941         /* step through the endpoints to find first bulk in and out endpoint */
 942         for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {
 943                 ep = &idesc->endpoint[i].desc;
 944
 945                 if ((ep_in == NULL)
 946                         && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 947                             == USB_DIR_IN)
 948                         && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
 949                             == USB_ENDPOINT_XFER_BULK)
 950                         || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
 951                             == USB_ENDPOINT_XFER_INT))) {
 952
 953                         ep_in = ep;
 954                         ep_in->bmAttributes = USB_ENDPOINT_XFER_INT;
 955                         ep_in->bInterval = 1;
 956                         dev_dbg(&intf->dev, ": acceptable inbound endpoint "
 957                                 "found\n");
 958                 }
 959
 960                 if ((ep_out == NULL)
 961                         && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 962                             == USB_DIR_OUT)
 963                         && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
 964                             == USB_ENDPOINT_XFER_BULK)
 965                         || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
 966                             == USB_ENDPOINT_XFER_INT))) {
 967
 968                         ep_out = ep;
 969                         ep_out->bmAttributes = USB_ENDPOINT_XFER_INT;
 970                         ep_out->bInterval = 1;
 971                         dev_dbg(&intf->dev, ": acceptable outbound endpoint "
 972                                 "found\n");
 973                 }
 974         }
 975         if (ep_in == NULL) {
 976                 dev_dbg(&intf->dev, ": inbound and/or endpoint not found\n");
 977                 return -ENODEV;
 978         }
 979
 980         pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
 981         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
 982
 983         ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
 984         if (!ir)
 985                 goto mem_alloc_fail;
 986
 987         ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in);
 988         if (!ir->buf_in)
 989                 goto buf_in_alloc_fail;
 990
 991         ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
 992         if (!ir->urb_in)
 993                 goto urb_in_alloc_fail;
 994
 995         ir->usbdev = dev;
 996         ir->dev = &intf->dev;
 997         ir->len_in = maxp;
 998         ir->flags.microsoft_gen1 = is_microsoft_gen1;
 999         ir->flags.tx_mask_inverted = tx_mask_inverted;
1000         init_ir_raw_event(&ir->rawir);
1001
1002         /* Saving usb interface data for use by the transmitter routine */
1003         ir->usb_ep_in = ep_in;
1004         ir->usb_ep_out = ep_out;
1005
1006         if (dev->descriptor.iManufacturer
1007             && usb_string(dev, dev->descriptor.iManufacturer,
1008                           buf, sizeof(buf)) > 0)
1009                 strlcpy(name, buf, sizeof(name));
1010         if (dev->descriptor.iProduct
1011             && usb_string(dev, dev->descriptor.iProduct,
1012                           buf, sizeof(buf)) > 0)
1013                 snprintf(name + strlen(name), sizeof(name) - strlen(name),
1014                          " %s", buf);
1015
1016         ir->idev = mceusb_init_input_dev(ir);
1017         if (!ir->idev)
1018                 goto input_dev_fail;
1019
1020         /* flush buffers on the device */
1021         mce_sync_in(ir, NULL, maxp);
1022         mce_sync_in(ir, NULL, maxp);
1023
1024         /* wire up inbound data handler */
1025         usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in,
1026                 maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval);
1027         ir->urb_in->transfer_dma = ir->dma_in;
1028         ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1029
1030         /* initialize device */
1031         if (ir->flags.microsoft_gen1)
1032                 mceusb_gen1_init(ir);
1033         else if (!is_gen3)
1034                 mceusb_gen2_init(ir);
1035
1036         mceusb_get_parameters(ir);
1037
1038         mceusb_set_tx_mask(ir, MCE_DEFAULT_TX_MASK);
1039
1040         usb_set_intfdata(intf, ir);
1041
1042         dev_info(&intf->dev, "Registered %s on usb%d:%d\n", name,
1043                  dev->bus->busnum, dev->devnum);
1044
1045         return 0;
1046
1047         /* Error-handling path */
1048 input_dev_fail:
1049         usb_free_urb(ir->urb_in);
1050 urb_in_alloc_fail:
1051         usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in);
1052 buf_in_alloc_fail:
1053         kfree(ir);
1054 mem_alloc_fail:
1055         dev_err(&intf->dev, "%s: device setup failed!\n", __func__);
1056
1057         return -ENOMEM;
1058 }
1059
1060
1061 static void __devexit mceusb_dev_disconnect(struct usb_interface *intf)
1062 {
1063         struct usb_device *dev = interface_to_usbdev(intf);
1064         struct mceusb_dev *ir = usb_get_intfdata(intf);
1065
1066         usb_set_intfdata(intf, NULL);
1067
1068         if (!ir)
1069                 return;
1070
1071         ir->usbdev = NULL;
1072         ir_input_unregister(ir->idev);
1073         usb_kill_urb(ir->urb_in);
1074         usb_free_urb(ir->urb_in);
1075         usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);
1076
1077         kfree(ir);
1078 }
1079
1080 static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message)
1081 {
1082         struct mceusb_dev *ir = usb_get_intfdata(intf);
1083         dev_info(ir->dev, "suspend\n");
1084         usb_kill_urb(ir->urb_in);
1085         return 0;
1086 }
1087
1088 static int mceusb_dev_resume(struct usb_interface *intf)
1089 {
1090         struct mceusb_dev *ir = usb_get_intfdata(intf);
1091         dev_info(ir->dev, "resume\n");
1092         if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))
1093                 return -EIO;
1094         return 0;
1095 }
1096
1097 static struct usb_driver mceusb_dev_driver = {
1098         .name =         DRIVER_NAME,
1099         .probe =        mceusb_dev_probe,
1100         .disconnect =   mceusb_dev_disconnect,
1101         .suspend =      mceusb_dev_suspend,
1102         .resume =       mceusb_dev_resume,
1103         .reset_resume = mceusb_dev_resume,
1104         .id_table =     mceusb_dev_table
1105 };
1106
1107 static int __init mceusb_dev_init(void)
1108 {
1109         int ret;
1110
1111         ret = usb_register(&mceusb_dev_driver);
1112         if (ret < 0)
1113                 printk(KERN_ERR DRIVER_NAME
1114                        ": usb register failed, result = %d\n", ret);
1115
1116         return ret;
1117 }
1118
1119 static void __exit mceusb_dev_exit(void)
1120 {
1121         usb_deregister(&mceusb_dev_driver);
1122 }
1123
1124 module_init(mceusb_dev_init);
1125 module_exit(mceusb_dev_exit);
1126
1127 MODULE_DESCRIPTION(DRIVER_DESC);
1128 MODULE_AUTHOR(DRIVER_AUTHOR);
1129 MODULE_LICENSE("GPL");
1130 MODULE_DEVICE_TABLE(usb, mceusb_dev_table);
1131
1132 module_param(debug, bool, S_IRUGO | S_IWUSR);
1133 MODULE_PARM_DESC(debug, "Debug enabled or not");