drivers/media/rc/redrat3.c

   1 /*
   2  * USB RedRat3 IR Transceiver rc-core driver
   3  *
   4  * Copyright (c) 2011 by Jarod Wilson <jarod@redhat.com>
   5  *  based heavily on the work of Stephen Cox, with additional
   6  *  help from RedRat Ltd.
   7  *
   8  * This driver began life based an an old version of the first-generation
   9  * lirc_mceusb driver from the lirc 0.7.2 distribution. It was then
  10  * significantly rewritten by Stephen Cox with the aid of RedRat Ltd's
  11  * Chris Dodge.
  12  *
  13  * The driver was then ported to rc-core and significantly rewritten again,
  14  * by Jarod, using the in-kernel mceusb driver as a guide, after an initial
  15  * port effort was started by Stephen.
  16  *
  17  * TODO LIST:
  18  * - fix lirc not showing repeats properly
  19  * --
  20  *
  21  * The RedRat3 is a USB transceiver with both send & receive,
  22  * with 2 separate sensors available for receive to enable
  23  * both good long range reception for general use, and good
  24  * short range reception when required for learning a signal.
  25  *
  26  * http://www.redrat.co.uk/
  27  *
  28  * It uses its own little protocol to communicate, the required
  29  * parts of which are embedded within this driver.
  30  * --
  31  *
  32  * This program is free software; you can redistribute it and/or modify
  33  * it under the terms of the GNU General Public License as published by
  34  * the Free Software Foundation; either version 2 of the License, or
  35  * (at your option) any later version.
  36  *
  37  * This program is distributed in the hope that it will be useful,
  38  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  39  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  40  * GNU General Public License for more details.
  41  *
  42  */
  43
  44 #include <asm/unaligned.h>
  45 #include <linux/device.h>
  46 #include <linux/leds.h>
  47 #include <linux/module.h>
  48 #include <linux/slab.h>
  49 #include <linux/usb.h>
  50 #include <linux/usb/input.h>
  51 #include <media/rc-core.h>
  52
  53 /* Driver Information */
  54 #define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>"
  55 #define DRIVER_AUTHOR2 "The Dweller, Stephen Cox"
  56 #define DRIVER_DESC "RedRat3 USB IR Transceiver Driver"
  57 #define DRIVER_NAME "redrat3"
  58
  59 /* bulk data transfer types */
  60 #define RR3_ERROR               0x01
  61 #define RR3_MOD_SIGNAL_IN       0x20
  62 #define RR3_MOD_SIGNAL_OUT      0x21
  63
  64 /* Get the RR firmware version */
  65 #define RR3_FW_VERSION          0xb1
  66 #define RR3_FW_VERSION_LEN      64
  67 /* Send encoded signal bulk-sent earlier*/
  68 #define RR3_TX_SEND_SIGNAL      0xb3
  69 #define RR3_SET_IR_PARAM        0xb7
  70 #define RR3_GET_IR_PARAM        0xb8
  71 /* Blink the red LED on the device */
  72 #define RR3_BLINK_LED           0xb9
  73 /* Read serial number of device */
  74 #define RR3_READ_SER_NO         0xba
  75 #define RR3_SER_NO_LEN          4
  76 /* Start capture with the RC receiver */
  77 #define RR3_RC_DET_ENABLE       0xbb
  78 /* Stop capture with the RC receiver */
  79 #define RR3_RC_DET_DISABLE      0xbc
  80 /* Start capture with the wideband receiver */
  81 #define RR3_MODSIG_CAPTURE     0xb2
  82 /* Return the status of RC detector capture */
  83 #define RR3_RC_DET_STATUS       0xbd
  84 /* Reset redrat */
  85 #define RR3_RESET               0xa0
  86
  87 /* Max number of lengths in the signal. */
  88 #define RR3_IR_IO_MAX_LENGTHS   0x01
  89 /* Periods to measure mod. freq. */
  90 #define RR3_IR_IO_PERIODS_MF    0x02
  91 /* Size of memory for main signal data */
  92 #define RR3_IR_IO_SIG_MEM_SIZE  0x03
  93 /* Delta value when measuring lengths */
  94 #define RR3_IR_IO_LENGTH_FUZZ   0x04
  95 /* Timeout for end of signal detection */
  96 #define RR3_IR_IO_SIG_TIMEOUT   0x05
  97 /* Minimum value for pause recognition. */
  98 #define RR3_IR_IO_MIN_PAUSE     0x06
  99
 100 /* Clock freq. of EZ-USB chip */
 101 #define RR3_CLK                 24000000
 102 /* Clock periods per timer count */
 103 #define RR3_CLK_PER_COUNT       12
 104 /* (RR3_CLK / RR3_CLK_PER_COUNT) */
 105 #define RR3_CLK_CONV_FACTOR     2000000
 106 /* USB bulk-in wideband IR data endpoint address */
 107 #define RR3_WIDE_IN_EP_ADDR     0x81
 108 /* USB bulk-in narrowband IR data endpoint address */
 109 #define RR3_NARROW_IN_EP_ADDR   0x82
 110
 111 /* Size of the fixed-length portion of the signal */
 112 #define RR3_DRIVER_MAXLENS      255
 113 #define RR3_MAX_SIG_SIZE        512
 114 #define RR3_TIME_UNIT           50
 115 #define RR3_END_OF_SIGNAL       0x7f
 116 #define RR3_TX_TRAILER_LEN      2
 117 #define RR3_RX_MIN_TIMEOUT      5
 118 #define RR3_RX_MAX_TIMEOUT      2000
 119
 120 /* The 8051's CPUCS Register address */
 121 #define RR3_CPUCS_REG_ADDR      0x7f92
 122
 123 #define USB_RR3USB_VENDOR_ID    0x112a
 124 #define USB_RR3USB_PRODUCT_ID   0x0001
 125 #define USB_RR3IIUSB_PRODUCT_ID 0x0005
 126
 127
 128 /*
 129  * The redrat3 encodes an IR signal as set of different lengths and a set
 130  * of indices into those lengths. This sets how much two lengths must
 131  * differ before they are considered distinct, the value is specified
 132  * in microseconds.
 133  * Default 5, value 0 to 127.
 134  */
 135 static int length_fuzz = 5;
 136 module_param(length_fuzz, uint, 0644);
 137 MODULE_PARM_DESC(length_fuzz, "Length Fuzz (0-127)");
 138
 139 /*
 140  * When receiving a continuous ir stream (for example when a user is
 141  * holding a button down on a remote), this specifies the minimum size
 142  * of a space when the redrat3 sends a irdata packet to the host. Specified
 143  * in miliseconds. Default value 18ms.
 144  * The value can be between 2 and 30 inclusive.
 145  */
 146 static int minimum_pause = 18;
 147 module_param(minimum_pause, uint, 0644);
 148 MODULE_PARM_DESC(minimum_pause, "Minimum Pause in ms (2-30)");
 149
 150 /*
 151  * The carrier frequency is measured during the first pulse of the IR
 152  * signal. The larger the number of periods used To measure, the more
 153  * accurate the result is likely to be, however some signals have short
 154  * initial pulses, so in some case it may be necessary to reduce this value.
 155  * Default 8, value 1 to 255.
 156  */
 157 static int periods_measure_carrier = 8;
 158 module_param(periods_measure_carrier, uint, 0644);
 159 MODULE_PARM_DESC(periods_measure_carrier, "Number of Periods to Measure Carrier (1-255)");
 160
 161
 162 struct redrat3_header {
 163         __be16 length;
 164         __be16 transfer_type;
 165 } __packed;
 166
 167 /* sending and receiving irdata */
 168 struct redrat3_irdata {
 169         struct redrat3_header header;
 170         __be32 pause;
 171         __be16 mod_freq_count;
 172         __be16 num_periods;
 173         __u8 max_lengths;
 174         __u8 no_lengths;
 175         __be16 max_sig_size;
 176         __be16 sig_size;
 177         __u8 no_repeats;
 178         __be16 lens[RR3_DRIVER_MAXLENS]; /* not aligned */
 179         __u8 sigdata[RR3_MAX_SIG_SIZE];
 180 } __packed;
 181
 182 /* firmware errors */
 183 struct redrat3_error {
 184         struct redrat3_header header;
 185         __be16 fw_error;
 186 } __packed;
 187
 188 /* table of devices that work with this driver */
 189 static struct usb_device_id redrat3_dev_table[] = {
 190         /* Original version of the RedRat3 */
 191         {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)},
 192         /* Second Version/release of the RedRat3 - RetRat3-II */
 193         {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)},
 194         {}                      /* Terminating entry */
 195 };
 196
 197 /* Structure to hold all of our device specific stuff */
 198 struct redrat3_dev {
 199         /* core device bits */
 200         struct rc_dev *rc;
 201         struct device *dev;
 202
 203         /* led control */
 204         struct led_classdev led;
 205         atomic_t flash;
 206         struct usb_ctrlrequest flash_control;
 207         struct urb *flash_urb;
 208         u8 flash_in_buf;
 209
 210         /* learning */
 211         bool wideband;
 212         struct usb_ctrlrequest learn_control;
 213         struct urb *learn_urb;
 214         u8 learn_buf;
 215
 216         /* save off the usb device pointer */
 217         struct usb_device *udev;
 218
 219         /* the receive endpoint */
 220         struct usb_endpoint_descriptor *ep_narrow;
 221         /* the buffer to receive data */
 222         void *bulk_in_buf;
 223         /* urb used to read ir data */
 224         struct urb *narrow_urb;
 225         struct urb *wide_urb;
 226
 227         /* the send endpoint */
 228         struct usb_endpoint_descriptor *ep_out;
 229
 230         /* usb dma */
 231         dma_addr_t dma_in;
 232
 233         /* Is the device currently transmitting?*/
 234         bool transmitting;
 235
 236         /* store for current packet */
 237         struct redrat3_irdata irdata;
 238         u16 bytes_read;
 239
 240         u32 carrier;
 241
 242         char name[64];
 243         char phys[64];
 244 };
 245
 246 static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code)
 247 {
 248         if (!rr3->transmitting && (code != 0x40))
 249                 dev_info(rr3->dev, "fw error code 0x%02x: ", code);
 250
 251         switch (code) {
 252         case 0x00:
 253                 pr_cont("No Error\n");
 254                 break;
 255
 256         /* Codes 0x20 through 0x2f are IR Firmware Errors */
 257         case 0x20:
 258                 pr_cont("Initial signal pulse not long enough to measure carrier frequency\n");
 259                 break;
 260         case 0x21:
 261                 pr_cont("Not enough length values allocated for signal\n");
 262                 break;
 263         case 0x22:
 264                 pr_cont("Not enough memory allocated for signal data\n");
 265                 break;
 266         case 0x23:
 267                 pr_cont("Too many signal repeats\n");
 268                 break;
 269         case 0x28:
 270                 pr_cont("Insufficient memory available for IR signal data memory allocation\n");
 271                 break;
 272         case 0x29:
 273                 pr_cont("Insufficient memory available for IrDa signal data memory allocation\n");
 274                 break;
 275
 276         /* Codes 0x30 through 0x3f are USB Firmware Errors */
 277         case 0x30:
 278                 pr_cont("Insufficient memory available for bulk transfer structure\n");
 279                 break;
 280
 281         /*
 282          * Other error codes... These are primarily errors that can occur in
 283          * the control messages sent to the redrat
 284          */
 285         case 0x40:
 286                 if (!rr3->transmitting)
 287                         pr_cont("Signal capture has been terminated\n");
 288                 break;
 289         case 0x41:
 290                 pr_cont("Attempt to set/get and unknown signal I/O algorithm parameter\n");
 291                 break;
 292         case 0x42:
 293                 pr_cont("Signal capture already started\n");
 294                 break;
 295
 296         default:
 297                 pr_cont("Unknown Error\n");
 298                 break;
 299         }
 300 }
 301
 302 static u32 redrat3_val_to_mod_freq(struct redrat3_irdata *irdata)
 303 {
 304         u32 mod_freq = 0;
 305         u16 mod_freq_count = be16_to_cpu(irdata->mod_freq_count);
 306
 307         if (mod_freq_count != 0)
 308                 mod_freq = (RR3_CLK * be16_to_cpu(irdata->num_periods)) /
 309                         (mod_freq_count * RR3_CLK_PER_COUNT);
 310
 311         return mod_freq;
 312 }
 313
 314 /* this function scales down the figures for the same result... */
 315 static u32 redrat3_len_to_us(u32 length)
 316 {
 317         u32 biglen = length * 1000;
 318         u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000;
 319         u32 result = (u32) (biglen / divisor);
 320
 321         /* don't allow zero lengths to go back, breaks lirc */
 322         return result ? result : 1;
 323 }
 324
 325 /*
 326  * convert us back into redrat3 lengths
 327  *
 328  * length * 1000   length * 1000000
 329  * ------------- = ---------------- = micro
 330  * rr3clk / 1000       rr3clk
 331
 332  * 6 * 2       4 * 3        micro * rr3clk          micro * rr3clk / 1000
 333  * ----- = 4   ----- = 6    -------------- = len    ---------------------
 334  *   3           2             1000000                    1000
 335  */
 336 static u32 redrat3_us_to_len(u32 microsec)
 337 {
 338         u32 result;
 339         u32 divisor;
 340
 341         microsec = (microsec > IR_MAX_DURATION) ? IR_MAX_DURATION : microsec;
 342         divisor = (RR3_CLK_CONV_FACTOR / 1000);
 343         result = (u32)(microsec * divisor) / 1000;
 344
 345         /* don't allow zero lengths to go back, breaks lirc */
 346         return result ? result : 1;
 347 }
 348
 349 static void redrat3_process_ir_data(struct redrat3_dev *rr3)
 350 {
 351         DEFINE_IR_RAW_EVENT(rawir);
 352         struct device *dev;
 353         unsigned int i, sig_size, single_len, offset, val;
 354         u32 mod_freq;
 355
 356         dev = rr3->dev;
 357
 358         mod_freq = redrat3_val_to_mod_freq(&rr3->irdata);
 359         dev_dbg(dev, "Got mod_freq of %u\n", mod_freq);
 360         if (mod_freq && rr3->wideband) {
 361                 DEFINE_IR_RAW_EVENT(ev);
 362
 363                 ev.carrier_report = 1;
 364                 ev.carrier = mod_freq;
 365
 366                 ir_raw_event_store(rr3->rc, &ev);
 367         }
 368
 369         /* process each rr3 encoded byte into an int */
 370         sig_size = be16_to_cpu(rr3->irdata.sig_size);
 371         for (i = 0; i < sig_size; i++) {
 372                 offset = rr3->irdata.sigdata[i];
 373                 val = get_unaligned_be16(&rr3->irdata.lens[offset]);
 374                 single_len = redrat3_len_to_us(val);
 375
 376                 /* we should always get pulse/space/pulse/space samples */
 377                 if (i % 2)
 378                         rawir.pulse = false;
 379                 else
 380                         rawir.pulse = true;
 381
 382                 rawir.duration = US_TO_NS(single_len);
 383                 /* cap the value to IR_MAX_DURATION */
 384                 rawir.duration = (rawir.duration > IR_MAX_DURATION) ?
 385                                  IR_MAX_DURATION : rawir.duration;
 386
 387                 dev_dbg(dev, "storing %s with duration %d (i: %d)\n",
 388                         rawir.pulse ? "pulse" : "space", rawir.duration, i);
 389                 ir_raw_event_store_with_filter(rr3->rc, &rawir);
 390         }
 391
 392         /* add a trailing space */
 393         rawir.pulse = false;
 394         rawir.timeout = true;
 395         rawir.duration = rr3->rc->timeout;
 396         dev_dbg(dev, "storing trailing timeout with duration %d\n",
 397                                                         rawir.duration);
 398         ir_raw_event_store_with_filter(rr3->rc, &rawir);
 399
 400         dev_dbg(dev, "calling ir_raw_event_handle\n");
 401         ir_raw_event_handle(rr3->rc);
 402 }
 403
 404 /* Util fn to send rr3 cmds */
 405 static int redrat3_send_cmd(int cmd, struct redrat3_dev *rr3)
 406 {
 407         struct usb_device *udev;
 408         u8 *data;
 409         int res;
 410
 411         data = kzalloc(sizeof(u8), GFP_KERNEL);
 412         if (!data)
 413                 return -ENOMEM;
 414
 415         udev = rr3->udev;
 416         res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd,
 417                               USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 418                               0x0000, 0x0000, data, sizeof(u8), 10000);
 419
 420         if (res < 0) {
 421                 dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d",
 422                         __func__, res, *data);
 423                 res = -EIO;
 424         } else
 425                 res = data[0];
 426
 427         kfree(data);
 428
 429         return res;
 430 }
 431
 432 /* Enables the long range detector and starts async receive */
 433 static int redrat3_enable_detector(struct redrat3_dev *rr3)
 434 {
 435         struct device *dev = rr3->dev;
 436         u8 ret;
 437
 438         ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3);
 439         if (ret != 0)
 440                 dev_dbg(dev, "%s: unexpected ret of %d\n",
 441                         __func__, ret);
 442
 443         ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
 444         if (ret != 1) {
 445                 dev_err(dev, "%s: detector status: %d, should be 1\n",
 446                         __func__, ret);
 447                 return -EIO;
 448         }
 449
 450         ret = usb_submit_urb(rr3->narrow_urb, GFP_KERNEL);
 451         if (ret) {
 452                 dev_err(rr3->dev, "narrow band urb failed: %d", ret);
 453                 return ret;
 454         }
 455
 456         ret = usb_submit_urb(rr3->wide_urb, GFP_KERNEL);
 457         if (ret)
 458                 dev_err(rr3->dev, "wide band urb failed: %d", ret);
 459
 460         return ret;
 461 }
 462
 463 static inline void redrat3_delete(struct redrat3_dev *rr3,
 464                                   struct usb_device *udev)
 465 {
 466         usb_kill_urb(rr3->narrow_urb);
 467         usb_kill_urb(rr3->wide_urb);
 468         usb_kill_urb(rr3->flash_urb);
 469         usb_kill_urb(rr3->learn_urb);
 470         usb_free_urb(rr3->narrow_urb);
 471         usb_free_urb(rr3->wide_urb);
 472         usb_free_urb(rr3->flash_urb);
 473         usb_free_urb(rr3->learn_urb);
 474         usb_free_coherent(udev, le16_to_cpu(rr3->ep_narrow->wMaxPacketSize),
 475                           rr3->bulk_in_buf, rr3->dma_in);
 476
 477         kfree(rr3);
 478 }
 479
 480 static u32 redrat3_get_timeout(struct redrat3_dev *rr3)
 481 {
 482         __be32 *tmp;
 483         u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */
 484         int len, ret, pipe;
 485
 486         len = sizeof(*tmp);
 487         tmp = kzalloc(len, GFP_KERNEL);
 488         if (!tmp)
 489                 return timeout;
 490
 491         pipe = usb_rcvctrlpipe(rr3->udev, 0);
 492         ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM,
 493                               USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 494                               RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, 5000);
 495         if (ret != len)
 496                 dev_warn(rr3->dev, "Failed to read timeout from hardware\n");
 497         else {
 498                 timeout = redrat3_len_to_us(be32_to_cpup(tmp));
 499
 500                 dev_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000);
 501         }
 502
 503         kfree(tmp);
 504
 505         return timeout;
 506 }
 507
 508 static int redrat3_set_timeout(struct rc_dev *rc_dev, unsigned int timeoutns)
 509 {
 510         struct redrat3_dev *rr3 = rc_dev->priv;
 511         struct usb_device *udev = rr3->udev;
 512         struct device *dev = rr3->dev;
 513         __be32 *timeout;
 514         int ret;
 515
 516         timeout = kmalloc(sizeof(*timeout), GFP_KERNEL);
 517         if (!timeout)
 518                 return -ENOMEM;
 519
 520         *timeout = cpu_to_be32(redrat3_us_to_len(timeoutns / 1000));
 521         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM,
 522                      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 523                      RR3_IR_IO_SIG_TIMEOUT, 0, timeout, sizeof(*timeout),
 524                      25000);
 525         dev_dbg(dev, "set ir parm timeout %d ret 0x%02x\n",
 526                                                 be32_to_cpu(*timeout), ret);
 527
 528         if (ret == sizeof(*timeout))
 529                 ret = 0;
 530         else if (ret >= 0)
 531                 ret = -EIO;
 532
 533         kfree(timeout);
 534
 535         return ret;
 536 }
 537
 538 static void redrat3_reset(struct redrat3_dev *rr3)
 539 {
 540         struct usb_device *udev = rr3->udev;
 541         struct device *dev = rr3->dev;
 542         int rc, rxpipe, txpipe;
 543         u8 *val;
 544         size_t const len = sizeof(*val);
 545
 546         rxpipe = usb_rcvctrlpipe(udev, 0);
 547         txpipe = usb_sndctrlpipe(udev, 0);
 548
 549         val = kmalloc(len, GFP_KERNEL);
 550         if (!val)
 551                 return;
 552
 553         *val = 0x01;
 554         rc = usb_control_msg(udev, rxpipe, RR3_RESET,
 555                              USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 556                              RR3_CPUCS_REG_ADDR, 0, val, len, 25000);
 557         dev_dbg(dev, "reset returned 0x%02x\n", rc);
 558
 559         *val = length_fuzz;
 560         rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
 561                              USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 562                              RR3_IR_IO_LENGTH_FUZZ, 0, val, len, 25000);
 563         dev_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc);
 564
 565         *val = (65536 - (minimum_pause * 2000)) / 256;
 566         rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
 567                              USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 568                              RR3_IR_IO_MIN_PAUSE, 0, val, len, 25000);
 569         dev_dbg(dev, "set ir parm min pause %d rc 0x%02x\n", *val, rc);
 570
 571         *val = periods_measure_carrier;
 572         rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
 573                              USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 574                              RR3_IR_IO_PERIODS_MF, 0, val, len, 25000);
 575         dev_dbg(dev, "set ir parm periods measure carrier %d rc 0x%02x", *val,
 576                                                                         rc);
 577
 578         *val = RR3_DRIVER_MAXLENS;
 579         rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
 580                              USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 581                              RR3_IR_IO_MAX_LENGTHS, 0, val, len, 25000);
 582         dev_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc);
 583
 584         kfree(val);
 585 }
 586
 587 static void redrat3_get_firmware_rev(struct redrat3_dev *rr3)
 588 {
 589         int rc;
 590         char *buffer;
 591
 592         buffer = kcalloc(RR3_FW_VERSION_LEN + 1, sizeof(*buffer), GFP_KERNEL);
 593         if (!buffer)
 594                 return;
 595
 596         rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0),
 597                              RR3_FW_VERSION,
 598                              USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 599                              0, 0, buffer, RR3_FW_VERSION_LEN, 5000);
 600
 601         if (rc >= 0)
 602                 dev_info(rr3->dev, "Firmware rev: %s", buffer);
 603         else
 604                 dev_err(rr3->dev, "Problem fetching firmware ID\n");
 605
 606         kfree(buffer);
 607 }
 608
 609 static void redrat3_read_packet_start(struct redrat3_dev *rr3, unsigned len)
 610 {
 611         struct redrat3_header *header = rr3->bulk_in_buf;
 612         unsigned pktlen, pkttype;
 613
 614         /* grab the Length and type of transfer */
 615         pktlen = be16_to_cpu(header->length);
 616         pkttype = be16_to_cpu(header->transfer_type);
 617
 618         if (pktlen > sizeof(rr3->irdata)) {
 619                 dev_warn(rr3->dev, "packet length %u too large\n", pktlen);
 620                 return;
 621         }
 622
 623         switch (pkttype) {
 624         case RR3_ERROR:
 625                 if (len >= sizeof(struct redrat3_error)) {
 626                         struct redrat3_error *error = rr3->bulk_in_buf;
 627                         unsigned fw_error = be16_to_cpu(error->fw_error);
 628                         redrat3_dump_fw_error(rr3, fw_error);
 629                 }
 630                 break;
 631
 632         case RR3_MOD_SIGNAL_IN:
 633                 memcpy(&rr3->irdata, rr3->bulk_in_buf, len);
 634                 rr3->bytes_read = len;
 635                 dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n",
 636                         rr3->bytes_read, pktlen);
 637                 break;
 638
 639         default:
 640                 dev_dbg(rr3->dev, "ignoring packet with type 0x%02x, len of %d, 0x%02x\n",
 641                                                 pkttype, len, pktlen);
 642                 break;
 643         }
 644 }
 645
 646 static void redrat3_read_packet_continue(struct redrat3_dev *rr3, unsigned len)
 647 {
 648         void *irdata = &rr3->irdata;
 649
 650         if (len + rr3->bytes_read > sizeof(rr3->irdata)) {
 651                 dev_warn(rr3->dev, "too much data for packet\n");
 652                 rr3->bytes_read = 0;
 653                 return;
 654         }
 655
 656         memcpy(irdata + rr3->bytes_read, rr3->bulk_in_buf, len);
 657
 658         rr3->bytes_read += len;
 659         dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", rr3->bytes_read,
 660                                  be16_to_cpu(rr3->irdata.header.length));
 661 }
 662
 663 /* gather IR data from incoming urb, process it when we have enough */
 664 static int redrat3_get_ir_data(struct redrat3_dev *rr3, unsigned len)
 665 {
 666         struct device *dev = rr3->dev;
 667         unsigned pkttype;
 668         int ret = 0;
 669
 670         if (rr3->bytes_read == 0 && len >= sizeof(struct redrat3_header)) {
 671                 redrat3_read_packet_start(rr3, len);
 672         } else if (rr3->bytes_read != 0) {
 673                 redrat3_read_packet_continue(rr3, len);
 674         } else if (rr3->bytes_read == 0) {
 675                 dev_err(dev, "error: no packet data read\n");
 676                 ret = -ENODATA;
 677                 goto out;
 678         }
 679
 680         if (rr3->bytes_read < be16_to_cpu(rr3->irdata.header.length) +
 681                                                 sizeof(struct redrat3_header))
 682                 /* we're still accumulating data */
 683                 return 0;
 684
 685         /* if we get here, we've got IR data to decode */
 686         pkttype = be16_to_cpu(rr3->irdata.header.transfer_type);
 687         if (pkttype == RR3_MOD_SIGNAL_IN)
 688                 redrat3_process_ir_data(rr3);
 689         else
 690                 dev_dbg(dev, "discarding non-signal data packet (type 0x%02x)\n",
 691                                                                 pkttype);
 692
 693 out:
 694         rr3->bytes_read = 0;
 695         return ret;
 696 }
 697
 698 /* callback function from USB when async USB request has completed */
 699 static void redrat3_handle_async(struct urb *urb)
 700 {
 701         struct redrat3_dev *rr3 = urb->context;
 702         int ret;
 703
 704         switch (urb->status) {
 705         case 0:
 706                 ret = redrat3_get_ir_data(rr3, urb->actual_length);
 707                 if (!ret && rr3->wideband && !rr3->learn_urb->hcpriv) {
 708                         ret = usb_submit_urb(rr3->learn_urb, GFP_ATOMIC);
 709                         if (ret)
 710                                 dev_err(rr3->dev, "Failed to submit learning urb: %d",
 711                                                                         ret);
 712                 }
 713
 714                 if (!ret) {
 715                         /* no error, prepare to read more */
 716                         ret = usb_submit_urb(urb, GFP_ATOMIC);
 717                         if (ret)
 718                                 dev_err(rr3->dev, "Failed to resubmit urb: %d",
 719                                                                         ret);
 720                 }
 721                 break;
 722
 723         case -ECONNRESET:
 724         case -ENOENT:
 725         case -ESHUTDOWN:
 726                 usb_unlink_urb(urb);
 727                 return;
 728
 729         case -EPIPE:
 730         default:
 731                 dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status);
 732                 rr3->bytes_read = 0;
 733                 break;
 734         }
 735 }
 736
 737 static u16 mod_freq_to_val(unsigned int mod_freq)
 738 {
 739         int mult = 6000000;
 740
 741         /* Clk used in mod. freq. generation is CLK24/4. */
 742         return 65536 - (mult / mod_freq);
 743 }
 744
 745 static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier)
 746 {
 747         struct redrat3_dev *rr3 = rcdev->priv;
 748         struct device *dev = rr3->dev;
 749
 750         dev_dbg(dev, "Setting modulation frequency to %u", carrier);
 751         if (carrier == 0)
 752                 return -EINVAL;
 753
 754         rr3->carrier = carrier;
 755
 756         return 0;
 757 }
 758
 759 static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
 760                                 unsigned count)
 761 {
 762         struct redrat3_dev *rr3 = rcdev->priv;
 763         struct device *dev = rr3->dev;
 764         struct redrat3_irdata *irdata = NULL;
 765         int ret, ret_len;
 766         int lencheck, cur_sample_len, pipe;
 767         int *sample_lens = NULL;
 768         u8 curlencheck = 0;
 769         unsigned i, sendbuf_len;
 770
 771         if (rr3->transmitting) {
 772                 dev_warn(dev, "%s: transmitter already in use\n", __func__);
 773                 return -EAGAIN;
 774         }
 775
 776         if (count > RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN)
 777                 return -EINVAL;
 778
 779         /* rr3 will disable rc detector on transmit */
 780         rr3->transmitting = true;
 781
 782         sample_lens = kcalloc(RR3_DRIVER_MAXLENS,
 783                               sizeof(*sample_lens),
 784                               GFP_KERNEL);
 785         if (!sample_lens)
 786                 return -ENOMEM;
 787
 788         irdata = kzalloc(sizeof(*irdata), GFP_KERNEL);
 789         if (!irdata) {
 790                 ret = -ENOMEM;
 791                 goto out;
 792         }
 793
 794         for (i = 0; i < count; i++) {
 795                 cur_sample_len = redrat3_us_to_len(txbuf[i]);
 796                 if (cur_sample_len > 0xffff) {
 797                         dev_warn(dev, "transmit period of %uus truncated to %uus\n",
 798                                         txbuf[i], redrat3_len_to_us(0xffff));
 799                         cur_sample_len = 0xffff;
 800                 }
 801                 for (lencheck = 0; lencheck < curlencheck; lencheck++) {
 802                         if (sample_lens[lencheck] == cur_sample_len)
 803                                 break;
 804                 }
 805                 if (lencheck == curlencheck) {
 806                         dev_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n",
 807                                 i, txbuf[i], curlencheck, cur_sample_len);
 808                         if (curlencheck < RR3_DRIVER_MAXLENS) {
 809                                 /* now convert the value to a proper
 810                                  * rr3 value.. */
 811                                 sample_lens[curlencheck] = cur_sample_len;
 812                                 put_unaligned_be16(cur_sample_len,
 813                                                 &irdata->lens[curlencheck]);
 814                                 curlencheck++;
 815                         } else {
 816                                 ret = -EINVAL;
 817                                 goto out;
 818                         }
 819                 }
 820                 irdata->sigdata[i] = lencheck;
 821         }
 822
 823         irdata->sigdata[count] = RR3_END_OF_SIGNAL;
 824         irdata->sigdata[count + 1] = RR3_END_OF_SIGNAL;
 825
 826         sendbuf_len = offsetof(struct redrat3_irdata,
 827                                         sigdata[count + RR3_TX_TRAILER_LEN]);
 828         /* fill in our packet header */
 829         irdata->header.length = cpu_to_be16(sendbuf_len -
 830                                                 sizeof(struct redrat3_header));
 831         irdata->header.transfer_type = cpu_to_be16(RR3_MOD_SIGNAL_OUT);
 832         irdata->pause = cpu_to_be32(redrat3_len_to_us(100));
 833         irdata->mod_freq_count = cpu_to_be16(mod_freq_to_val(rr3->carrier));
 834         irdata->no_lengths = curlencheck;
 835         irdata->sig_size = cpu_to_be16(count + RR3_TX_TRAILER_LEN);
 836
 837         pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
 838         ret = usb_bulk_msg(rr3->udev, pipe, irdata,
 839                             sendbuf_len, &ret_len, 10000);
 840         dev_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret);
 841
 842         /* now tell the hardware to transmit what we sent it */
 843         pipe = usb_rcvctrlpipe(rr3->udev, 0);
 844         ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
 845                               USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 846                               0, 0, irdata, 2, 10000);
 847
 848         if (ret < 0)
 849                 dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
 850         else
 851                 ret = count;
 852
 853 out:
 854         kfree(irdata);
 855         kfree(sample_lens);
 856
 857         rr3->transmitting = false;
 858         /* rr3 re-enables rc detector because it was enabled before */
 859
 860         return ret;
 861 }
 862
 863 static void redrat3_brightness_set(struct led_classdev *led_dev, enum
 864                                                 led_brightness brightness)
 865 {
 866         struct redrat3_dev *rr3 = container_of(led_dev, struct redrat3_dev,
 867                                                                         led);
 868
 869         if (brightness != LED_OFF && atomic_cmpxchg(&rr3->flash, 0, 1) == 0) {
 870                 int ret = usb_submit_urb(rr3->flash_urb, GFP_ATOMIC);
 871                 if (ret != 0) {
 872                         dev_dbg(rr3->dev, "%s: unexpected ret of %d\n",
 873                                 __func__, ret);
 874                         atomic_set(&rr3->flash, 0);
 875                 }
 876         }
 877 }
 878
 879 static int redrat3_wideband_receiver(struct rc_dev *rcdev, int enable)
 880 {
 881         struct redrat3_dev *rr3 = rcdev->priv;
 882         int ret = 0;
 883
 884         rr3->wideband = enable != 0;
 885
 886         if (enable) {
 887                 ret = usb_submit_urb(rr3->learn_urb, GFP_KERNEL);
 888                 if (ret)
 889                         dev_err(rr3->dev, "Failed to submit learning urb: %d",
 890                                                                         ret);
 891         }
 892
 893         return ret;
 894 }
 895
 896 static void redrat3_learn_complete(struct urb *urb)
 897 {
 898         struct redrat3_dev *rr3 = urb->context;
 899
 900         switch (urb->status) {
 901         case 0:
 902                 break;
 903         case -ECONNRESET:
 904         case -ENOENT:
 905         case -ESHUTDOWN:
 906                 usb_unlink_urb(urb);
 907                 return;
 908         case -EPIPE:
 909         default:
 910                 dev_err(rr3->dev, "Error: learn urb status = %d", urb->status);
 911                 break;
 912         }
 913 }
 914
 915 static void redrat3_led_complete(struct urb *urb)
 916 {
 917         struct redrat3_dev *rr3 = urb->context;
 918
 919         switch (urb->status) {
 920         case 0:
 921                 break;
 922         case -ECONNRESET:
 923         case -ENOENT:
 924         case -ESHUTDOWN:
 925                 usb_unlink_urb(urb);
 926                 return;
 927         case -EPIPE:
 928         default:
 929                 dev_dbg(rr3->dev, "Error: urb status = %d\n", urb->status);
 930                 break;
 931         }
 932
 933         rr3->led.brightness = LED_OFF;
 934         atomic_dec(&rr3->flash);
 935 }
 936
 937 static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3)
 938 {
 939         struct device *dev = rr3->dev;
 940         struct rc_dev *rc;
 941         int ret;
 942         u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct);
 943
 944         rc = rc_allocate_device(RC_DRIVER_IR_RAW);
 945         if (!rc)
 946                 return NULL;
 947
 948         snprintf(rr3->name, sizeof(rr3->name),
 949                  "RedRat3%s Infrared Remote Transceiver",
 950                  prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "");
 951
 952         usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys));
 953
 954         rc->device_name = rr3->name;
 955         rc->input_phys = rr3->phys;
 956         usb_to_input_id(rr3->udev, &rc->input_id);
 957         rc->dev.parent = dev;
 958         rc->priv = rr3;
 959         rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
 960         rc->min_timeout = MS_TO_NS(RR3_RX_MIN_TIMEOUT);
 961         rc->max_timeout = MS_TO_NS(RR3_RX_MAX_TIMEOUT);
 962         rc->timeout = US_TO_NS(redrat3_get_timeout(rr3));
 963         rc->s_timeout = redrat3_set_timeout;
 964         rc->tx_ir = redrat3_transmit_ir;
 965         rc->s_tx_carrier = redrat3_set_tx_carrier;
 966         rc->s_carrier_report = redrat3_wideband_receiver;
 967         rc->driver_name = DRIVER_NAME;
 968         rc->rx_resolution = US_TO_NS(2);
 969         rc->map_name = RC_MAP_HAUPPAUGE;
 970
 971         ret = rc_register_device(rc);
 972         if (ret < 0) {
 973                 dev_err(dev, "remote dev registration failed\n");
 974                 goto out;
 975         }
 976
 977         return rc;
 978
 979 out:
 980         rc_free_device(rc);
 981         return NULL;
 982 }
 983
 984 static int redrat3_dev_probe(struct usb_interface *intf,
 985                              const struct usb_device_id *id)
 986 {
 987         struct usb_device *udev = interface_to_usbdev(intf);
 988         struct device *dev = &intf->dev;
 989         struct usb_host_interface *uhi;
 990         struct redrat3_dev *rr3;
 991         struct usb_endpoint_descriptor *ep;
 992         struct usb_endpoint_descriptor *ep_narrow = NULL;
 993         struct usb_endpoint_descriptor *ep_wide = NULL;
 994         struct usb_endpoint_descriptor *ep_out = NULL;
 995         u8 addr, attrs;
 996         int pipe, i;
 997         int retval = -ENOMEM;
 998
 999         uhi = intf->cur_altsetting;
1000
1001         /* find our bulk-in and bulk-out endpoints */
1002         for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {
1003                 ep = &uhi->endpoint[i].desc;
1004                 addr = ep->bEndpointAddress;
1005                 attrs = ep->bmAttributes;
1006
1007                 if (((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
1008                     ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
1009                      USB_ENDPOINT_XFER_BULK)) {
1010                         dev_dbg(dev, "found bulk-in endpoint at 0x%02x\n",
1011                                 ep->bEndpointAddress);
1012                         /* data comes in on 0x82, 0x81 is for learning */
1013                         if (ep->bEndpointAddress == RR3_NARROW_IN_EP_ADDR)
1014                                 ep_narrow = ep;
1015                         if (ep->bEndpointAddress == RR3_WIDE_IN_EP_ADDR)
1016                                 ep_wide = ep;
1017                 }
1018
1019                 if ((ep_out == NULL) &&
1020                     ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
1021                     ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
1022                      USB_ENDPOINT_XFER_BULK)) {
1023                         dev_dbg(dev, "found bulk-out endpoint at 0x%02x\n",
1024                                 ep->bEndpointAddress);
1025                         ep_out = ep;
1026                 }
1027         }
1028
1029         if (!ep_narrow || !ep_out || !ep_wide) {
1030                 dev_err(dev, "Couldn't find all endpoints\n");
1031                 retval = -ENODEV;
1032                 goto no_endpoints;
1033         }
1034
1035         /* allocate memory for our device state and initialize it */
1036         rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL);
1037         if (!rr3)
1038                 goto no_endpoints;
1039
1040         rr3->dev = &intf->dev;
1041         rr3->ep_narrow = ep_narrow;
1042         rr3->ep_out = ep_out;
1043         rr3->udev = udev;
1044
1045         /* set up bulk-in endpoint */
1046         rr3->narrow_urb = usb_alloc_urb(0, GFP_KERNEL);
1047         if (!rr3->narrow_urb)
1048                 goto redrat_free;
1049
1050         rr3->wide_urb = usb_alloc_urb(0, GFP_KERNEL);
1051         if (!rr3->wide_urb)
1052                 goto redrat_free;
1053
1054         rr3->bulk_in_buf = usb_alloc_coherent(udev,
1055                 le16_to_cpu(ep_narrow->wMaxPacketSize),
1056                 GFP_KERNEL, &rr3->dma_in);
1057         if (!rr3->bulk_in_buf)
1058                 goto redrat_free;
1059
1060         pipe = usb_rcvbulkpipe(udev, ep_narrow->bEndpointAddress);
1061         usb_fill_bulk_urb(rr3->narrow_urb, udev, pipe, rr3->bulk_in_buf,
1062                 le16_to_cpu(ep_narrow->wMaxPacketSize),
1063                 redrat3_handle_async, rr3);
1064         rr3->narrow_urb->transfer_dma = rr3->dma_in;
1065         rr3->narrow_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1066
1067         pipe = usb_rcvbulkpipe(udev, ep_wide->bEndpointAddress);
1068         usb_fill_bulk_urb(rr3->wide_urb, udev, pipe, rr3->bulk_in_buf,
1069                 le16_to_cpu(ep_narrow->wMaxPacketSize),
1070                 redrat3_handle_async, rr3);
1071         rr3->wide_urb->transfer_dma = rr3->dma_in;
1072         rr3->wide_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1073
1074         redrat3_reset(rr3);
1075         redrat3_get_firmware_rev(rr3);
1076
1077         /* default.. will get overridden by any sends with a freq defined */
1078         rr3->carrier = 38000;
1079
1080         atomic_set(&rr3->flash, 0);
1081         rr3->flash_urb = usb_alloc_urb(0, GFP_KERNEL);
1082         if (!rr3->flash_urb)
1083                 goto redrat_free;
1084
1085         /* learn urb */
1086         rr3->learn_urb = usb_alloc_urb(0, GFP_KERNEL);
1087         if (!rr3->learn_urb)
1088                 goto redrat_free;
1089
1090         /* setup packet is 'c0 b2 0000 0000 0001' */
1091         rr3->learn_control.bRequestType = 0xc0;
1092         rr3->learn_control.bRequest = RR3_MODSIG_CAPTURE;
1093         rr3->learn_control.wLength = cpu_to_le16(1);
1094
1095         usb_fill_control_urb(rr3->learn_urb, udev, usb_rcvctrlpipe(udev, 0),
1096                         (unsigned char *)&rr3->learn_control,
1097                         &rr3->learn_buf, sizeof(rr3->learn_buf),
1098                         redrat3_learn_complete, rr3);
1099
1100         /* setup packet is 'c0 b9 0000 0000 0001' */
1101         rr3->flash_control.bRequestType = 0xc0;
1102         rr3->flash_control.bRequest = RR3_BLINK_LED;
1103         rr3->flash_control.wLength = cpu_to_le16(1);
1104
1105         usb_fill_control_urb(rr3->flash_urb, udev, usb_rcvctrlpipe(udev, 0),
1106                         (unsigned char *)&rr3->flash_control,
1107                         &rr3->flash_in_buf, sizeof(rr3->flash_in_buf),
1108                         redrat3_led_complete, rr3);
1109
1110         /* led control */
1111         rr3->led.name = "redrat3:red:feedback";
1112         rr3->led.default_trigger = "rc-feedback";
1113         rr3->led.brightness_set = redrat3_brightness_set;
1114         retval = led_classdev_register(&intf->dev, &rr3->led);
1115         if (retval)
1116                 goto redrat_free;
1117
1118         rr3->rc = redrat3_init_rc_dev(rr3);
1119         if (!rr3->rc) {
1120                 retval = -ENOMEM;
1121                 goto led_free;
1122         }
1123
1124         /* might be all we need to do? */
1125         retval = redrat3_enable_detector(rr3);
1126         if (retval < 0)
1127                 goto led_free;
1128
1129         /* we can register the device now, as it is ready */
1130         usb_set_intfdata(intf, rr3);
1131
1132         return 0;
1133
1134 led_free:
1135         led_classdev_unregister(&rr3->led);
1136 redrat_free:
1137         redrat3_delete(rr3, rr3->udev);
1138
1139 no_endpoints:
1140         return retval;
1141 }
1142
1143 static void redrat3_dev_disconnect(struct usb_interface *intf)
1144 {
1145         struct usb_device *udev = interface_to_usbdev(intf);
1146         struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1147
1148         usb_set_intfdata(intf, NULL);
1149         rc_unregister_device(rr3->rc);
1150         led_classdev_unregister(&rr3->led);
1151         redrat3_delete(rr3, udev);
1152 }
1153
1154 static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message)
1155 {
1156         struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1157
1158         led_classdev_suspend(&rr3->led);
1159         usb_kill_urb(rr3->narrow_urb);
1160         usb_kill_urb(rr3->wide_urb);
1161         usb_kill_urb(rr3->flash_urb);
1162         return 0;
1163 }
1164
1165 static int redrat3_dev_resume(struct usb_interface *intf)
1166 {
1167         struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1168
1169         if (usb_submit_urb(rr3->narrow_urb, GFP_ATOMIC))
1170                 return -EIO;
1171         if (usb_submit_urb(rr3->wide_urb, GFP_ATOMIC))
1172                 return -EIO;
1173         led_classdev_resume(&rr3->led);
1174         return 0;
1175 }
1176
1177 static struct usb_driver redrat3_dev_driver = {
1178         .name           = DRIVER_NAME,
1179         .probe          = redrat3_dev_probe,
1180         .disconnect     = redrat3_dev_disconnect,
1181         .suspend        = redrat3_dev_suspend,
1182         .resume         = redrat3_dev_resume,
1183         .reset_resume   = redrat3_dev_resume,
1184         .id_table       = redrat3_dev_table
1185 };
1186
1187 module_usb_driver(redrat3_dev_driver);
1188
1189 MODULE_DESCRIPTION(DRIVER_DESC);
1190 MODULE_AUTHOR(DRIVER_AUTHOR);
1191 MODULE_AUTHOR(DRIVER_AUTHOR2);
1192 MODULE_LICENSE("GPL");
1193 MODULE_DEVICE_TABLE(usb, redrat3_dev_table);