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 * You should have received a copy of the GNU General Public License 43 * along with this program; if not, write to the Free Software 44 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 45 * 46 */ 47 48 #include <linux/device.h> 49 #include <linux/module.h> 50 #include <linux/slab.h> 51 #include <linux/usb.h> 52 #include <linux/usb/input.h> 53 #include <media/rc-core.h> 54 55 /* Driver Information */ 56 #define DRIVER_VERSION "0.70" 57 #define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>" 58 #define DRIVER_AUTHOR2 "The Dweller, Stephen Cox" 59 #define DRIVER_DESC "RedRat3 USB IR Transceiver Driver" 60 #define DRIVER_NAME "redrat3" 61 62 /* module parameters */ 63 #ifdef CONFIG_USB_DEBUG 64 static int debug = 1; 65 #else 66 static int debug; 67 #endif 68 69 #define RR3_DEBUG_STANDARD 0x1 70 #define RR3_DEBUG_FUNCTION_TRACE 0x2 71 72 #define rr3_dbg(dev, fmt, ...) \ 73 do { \ 74 if (debug & RR3_DEBUG_STANDARD) \ 75 dev_info(dev, fmt, ## __VA_ARGS__); \ 76 } while (0) 77 78 #define rr3_ftr(dev, fmt, ...) \ 79 do { \ 80 if (debug & RR3_DEBUG_FUNCTION_TRACE) \ 81 dev_info(dev, fmt, ## __VA_ARGS__); \ 82 } while (0) 83 84 /* bulk data transfer types */ 85 #define RR3_ERROR 0x01 86 #define RR3_MOD_SIGNAL_IN 0x20 87 #define RR3_MOD_SIGNAL_OUT 0x21 88 89 /* Get the RR firmware version */ 90 #define RR3_FW_VERSION 0xb1 91 #define RR3_FW_VERSION_LEN 64 92 /* Send encoded signal bulk-sent earlier*/ 93 #define RR3_TX_SEND_SIGNAL 0xb3 94 #define RR3_SET_IR_PARAM 0xb7 95 #define RR3_GET_IR_PARAM 0xb8 96 /* Blink the red LED on the device */ 97 #define RR3_BLINK_LED 0xb9 98 /* Read serial number of device */ 99 #define RR3_READ_SER_NO 0xba 100 #define RR3_SER_NO_LEN 4 101 /* Start capture with the RC receiver */ 102 #define RR3_RC_DET_ENABLE 0xbb 103 /* Stop capture with the RC receiver */ 104 #define RR3_RC_DET_DISABLE 0xbc 105 /* Return the status of RC detector capture */ 106 #define RR3_RC_DET_STATUS 0xbd 107 /* Reset redrat */ 108 #define RR3_RESET 0xa0 109 110 /* Max number of lengths in the signal. */ 111 #define RR3_IR_IO_MAX_LENGTHS 0x01 112 /* Periods to measure mod. freq. */ 113 #define RR3_IR_IO_PERIODS_MF 0x02 114 /* Size of memory for main signal data */ 115 #define RR3_IR_IO_SIG_MEM_SIZE 0x03 116 /* Delta value when measuring lengths */ 117 #define RR3_IR_IO_LENGTH_FUZZ 0x04 118 /* Timeout for end of signal detection */ 119 #define RR3_IR_IO_SIG_TIMEOUT 0x05 120 /* Minumum value for pause recognition. */ 121 #define RR3_IR_IO_MIN_PAUSE 0x06 122 123 /* Clock freq. of EZ-USB chip */ 124 #define RR3_CLK 24000000 125 /* Clock periods per timer count */ 126 #define RR3_CLK_PER_COUNT 12 127 /* (RR3_CLK / RR3_CLK_PER_COUNT) */ 128 #define RR3_CLK_CONV_FACTOR 2000000 129 /* USB bulk-in IR data endpoint address */ 130 #define RR3_BULK_IN_EP_ADDR 0x82 131 132 /* Raw Modulated signal data value offsets */ 133 #define RR3_PAUSE_OFFSET 0 134 #define RR3_FREQ_COUNT_OFFSET 4 135 #define RR3_NUM_PERIOD_OFFSET 6 136 #define RR3_MAX_LENGTHS_OFFSET 8 137 #define RR3_NUM_LENGTHS_OFFSET 9 138 #define RR3_MAX_SIGS_OFFSET 10 139 #define RR3_NUM_SIGS_OFFSET 12 140 #define RR3_REPEATS_OFFSET 14 141 142 /* Size of the fixed-length portion of the signal */ 143 #define RR3_HEADER_LENGTH 15 144 #define RR3_DRIVER_MAXLENS 128 145 #define RR3_MAX_SIG_SIZE 512 146 #define RR3_MAX_BUF_SIZE \ 147 ((2 * RR3_HEADER_LENGTH) + RR3_DRIVER_MAXLENS + RR3_MAX_SIG_SIZE) 148 #define RR3_TIME_UNIT 50 149 #define RR3_END_OF_SIGNAL 0x7f 150 #define RR3_TX_HEADER_OFFSET 4 151 #define RR3_TX_TRAILER_LEN 2 152 #define RR3_RX_MIN_TIMEOUT 5 153 #define RR3_RX_MAX_TIMEOUT 2000 154 155 /* The 8051's CPUCS Register address */ 156 #define RR3_CPUCS_REG_ADDR 0x7f92 157 158 #define USB_RR3USB_VENDOR_ID 0x112a 159 #define USB_RR3USB_PRODUCT_ID 0x0001 160 #define USB_RR3IIUSB_PRODUCT_ID 0x0005 161 162 /* table of devices that work with this driver */ 163 static struct usb_device_id redrat3_dev_table[] = { 164 /* Original version of the RedRat3 */ 165 {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)}, 166 /* Second Version/release of the RedRat3 - RetRat3-II */ 167 {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)}, 168 {} /* Terminating entry */ 169 }; 170 171 /* Structure to hold all of our device specific stuff */ 172 struct redrat3_dev { 173 /* core device bits */ 174 struct rc_dev *rc; 175 struct device *dev; 176 177 /* save off the usb device pointer */ 178 struct usb_device *udev; 179 180 /* the receive endpoint */ 181 struct usb_endpoint_descriptor *ep_in; 182 /* the buffer to receive data */ 183 unsigned char *bulk_in_buf; 184 /* urb used to read ir data */ 185 struct urb *read_urb; 186 187 /* the send endpoint */ 188 struct usb_endpoint_descriptor *ep_out; 189 /* the buffer to send data */ 190 unsigned char *bulk_out_buf; 191 /* the urb used to send data */ 192 struct urb *write_urb; 193 194 /* usb dma */ 195 dma_addr_t dma_in; 196 dma_addr_t dma_out; 197 198 /* locks this structure */ 199 struct mutex lock; 200 201 /* rx signal timeout timer */ 202 struct timer_list rx_timeout; 203 u32 hw_timeout; 204 205 /* is the detector enabled*/ 206 bool det_enabled; 207 /* Is the device currently transmitting?*/ 208 bool transmitting; 209 210 /* store for current packet */ 211 char pbuf[RR3_MAX_BUF_SIZE]; 212 u16 pktlen; 213 u16 pkttype; 214 u16 bytes_read; 215 /* indicate whether we are going to reprocess 216 * the USB callback with a bigger buffer */ 217 int buftoosmall; 218 char *datap; 219 220 u32 carrier; 221 222 char name[128]; 223 char phys[64]; 224 }; 225 226 /* All incoming data buffers adhere to a very specific data format */ 227 struct redrat3_signal_header { 228 u16 length; /* Length of data being transferred */ 229 u16 transfer_type; /* Type of data transferred */ 230 u32 pause; /* Pause between main and repeat signals */ 231 u16 mod_freq_count; /* Value of timer on mod. freq. measurement */ 232 u16 no_periods; /* No. of periods over which mod. freq. is measured */ 233 u8 max_lengths; /* Max no. of lengths (i.e. size of array) */ 234 u8 no_lengths; /* Actual no. of elements in lengths array */ 235 u16 max_sig_size; /* Max no. of values in signal data array */ 236 u16 sig_size; /* Acuto no. of values in signal data array */ 237 u8 no_repeats; /* No. of repeats of repeat signal section */ 238 /* Here forward is the lengths and signal data */ 239 }; 240 241 static void redrat3_dump_signal_header(struct redrat3_signal_header *header) 242 { 243 pr_info("%s:\n", __func__); 244 pr_info(" * length: %u, transfer_type: 0x%02x\n", 245 header->length, header->transfer_type); 246 pr_info(" * pause: %u, freq_count: %u, no_periods: %u\n", 247 header->pause, header->mod_freq_count, header->no_periods); 248 pr_info(" * lengths: %u (max: %u)\n", 249 header->no_lengths, header->max_lengths); 250 pr_info(" * sig_size: %u (max: %u)\n", 251 header->sig_size, header->max_sig_size); 252 pr_info(" * repeats: %u\n", header->no_repeats); 253 } 254 255 static void redrat3_dump_signal_data(char *buffer, u16 len) 256 { 257 int offset, i; 258 char *data_vals; 259 260 pr_info("%s:", __func__); 261 262 offset = RR3_TX_HEADER_OFFSET + RR3_HEADER_LENGTH 263 + (RR3_DRIVER_MAXLENS * sizeof(u16)); 264 265 /* read RR3_DRIVER_MAXLENS from ctrl msg */ 266 data_vals = buffer + offset; 267 268 for (i = 0; i < len; i++) { 269 if (i % 10 == 0) 270 pr_cont("\n * "); 271 pr_cont("%02x ", *data_vals++); 272 } 273 274 pr_cont("\n"); 275 } 276 277 /* 278 * redrat3_issue_async 279 * 280 * Issues an async read to the ir data in port.. 281 * sets the callback to be redrat3_handle_async 282 */ 283 static void redrat3_issue_async(struct redrat3_dev *rr3) 284 { 285 int res; 286 287 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 288 289 memset(rr3->bulk_in_buf, 0, rr3->ep_in->wMaxPacketSize); 290 res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC); 291 if (res) 292 rr3_dbg(rr3->dev, "%s: receive request FAILED! " 293 "(res %d, len %d)\n", __func__, res, 294 rr3->read_urb->transfer_buffer_length); 295 } 296 297 static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code) 298 { 299 if (!rr3->transmitting && (code != 0x40)) 300 dev_info(rr3->dev, "fw error code 0x%02x: ", code); 301 302 switch (code) { 303 case 0x00: 304 pr_cont("No Error\n"); 305 break; 306 307 /* Codes 0x20 through 0x2f are IR Firmware Errors */ 308 case 0x20: 309 pr_cont("Initial signal pulse not long enough " 310 "to measure carrier frequency\n"); 311 break; 312 case 0x21: 313 pr_cont("Not enough length values allocated for signal\n"); 314 break; 315 case 0x22: 316 pr_cont("Not enough memory allocated for signal data\n"); 317 break; 318 case 0x23: 319 pr_cont("Too many signal repeats\n"); 320 break; 321 case 0x28: 322 pr_cont("Insufficient memory available for IR signal " 323 "data memory allocation\n"); 324 break; 325 case 0x29: 326 pr_cont("Insufficient memory available " 327 "for IrDa signal data memory allocation\n"); 328 break; 329 330 /* Codes 0x30 through 0x3f are USB Firmware Errors */ 331 case 0x30: 332 pr_cont("Insufficient memory available for bulk " 333 "transfer structure\n"); 334 break; 335 336 /* 337 * Other error codes... These are primarily errors that can occur in 338 * the control messages sent to the redrat 339 */ 340 case 0x40: 341 if (!rr3->transmitting) 342 pr_cont("Signal capture has been terminated\n"); 343 break; 344 case 0x41: 345 pr_cont("Attempt to set/get and unknown signal I/O " 346 "algorithm parameter\n"); 347 break; 348 case 0x42: 349 pr_cont("Signal capture already started\n"); 350 break; 351 352 default: 353 pr_cont("Unknown Error\n"); 354 break; 355 } 356 } 357 358 static u32 redrat3_val_to_mod_freq(struct redrat3_signal_header *ph) 359 { 360 u32 mod_freq = 0; 361 362 if (ph->mod_freq_count != 0) 363 mod_freq = (RR3_CLK * ph->no_periods) / 364 (ph->mod_freq_count * RR3_CLK_PER_COUNT); 365 366 return mod_freq; 367 } 368 369 /* this function scales down the figures for the same result... */ 370 static u32 redrat3_len_to_us(u32 length) 371 { 372 u32 biglen = length * 1000; 373 u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000; 374 u32 result = (u32) (biglen / divisor); 375 376 /* don't allow zero lengths to go back, breaks lirc */ 377 return result ? result : 1; 378 } 379 380 /* 381 * convert us back into redrat3 lengths 382 * 383 * length * 1000 length * 1000000 384 * ------------- = ---------------- = micro 385 * rr3clk / 1000 rr3clk 386 387 * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000 388 * ----- = 4 ----- = 6 -------------- = len --------------------- 389 * 3 2 1000000 1000 390 */ 391 static u32 redrat3_us_to_len(u32 microsec) 392 { 393 u32 result; 394 u32 divisor; 395 396 microsec &= IR_MAX_DURATION; 397 divisor = (RR3_CLK_CONV_FACTOR / 1000); 398 result = (u32)(microsec * divisor) / 1000; 399 400 /* don't allow zero lengths to go back, breaks lirc */ 401 return result ? result : 1; 402 403 } 404 405 /* timer callback to send reset event */ 406 static void redrat3_rx_timeout(unsigned long data) 407 { 408 struct redrat3_dev *rr3 = (struct redrat3_dev *)data; 409 410 rr3_dbg(rr3->dev, "calling ir_raw_event_reset\n"); 411 ir_raw_event_reset(rr3->rc); 412 } 413 414 static void redrat3_process_ir_data(struct redrat3_dev *rr3) 415 { 416 DEFINE_IR_RAW_EVENT(rawir); 417 struct redrat3_signal_header header; 418 struct device *dev; 419 int i, trailer = 0; 420 unsigned long delay; 421 u32 mod_freq, single_len; 422 u16 *len_vals; 423 u8 *data_vals; 424 u32 tmp32; 425 u16 tmp16; 426 char *sig_data; 427 428 if (!rr3) { 429 pr_err("%s called with no context!\n", __func__); 430 return; 431 } 432 433 rr3_ftr(rr3->dev, "Entered %s\n", __func__); 434 435 dev = rr3->dev; 436 sig_data = rr3->pbuf; 437 438 header.length = rr3->pktlen; 439 header.transfer_type = rr3->pkttype; 440 441 /* Sanity check */ 442 if (!(header.length >= RR3_HEADER_LENGTH)) 443 dev_warn(dev, "read returned less than rr3 header len\n"); 444 445 /* Make sure we reset the IR kfifo after a bit of inactivity */ 446 delay = usecs_to_jiffies(rr3->hw_timeout); 447 mod_timer(&rr3->rx_timeout, jiffies + delay); 448 449 memcpy(&tmp32, sig_data + RR3_PAUSE_OFFSET, sizeof(tmp32)); 450 header.pause = be32_to_cpu(tmp32); 451 452 memcpy(&tmp16, sig_data + RR3_FREQ_COUNT_OFFSET, sizeof(tmp16)); 453 header.mod_freq_count = be16_to_cpu(tmp16); 454 455 memcpy(&tmp16, sig_data + RR3_NUM_PERIOD_OFFSET, sizeof(tmp16)); 456 header.no_periods = be16_to_cpu(tmp16); 457 458 header.max_lengths = sig_data[RR3_MAX_LENGTHS_OFFSET]; 459 header.no_lengths = sig_data[RR3_NUM_LENGTHS_OFFSET]; 460 461 memcpy(&tmp16, sig_data + RR3_MAX_SIGS_OFFSET, sizeof(tmp16)); 462 header.max_sig_size = be16_to_cpu(tmp16); 463 464 memcpy(&tmp16, sig_data + RR3_NUM_SIGS_OFFSET, sizeof(tmp16)); 465 header.sig_size = be16_to_cpu(tmp16); 466 467 header.no_repeats= sig_data[RR3_REPEATS_OFFSET]; 468 469 if (debug) { 470 redrat3_dump_signal_header(&header); 471 redrat3_dump_signal_data(sig_data, header.sig_size); 472 } 473 474 mod_freq = redrat3_val_to_mod_freq(&header); 475 rr3_dbg(dev, "Got mod_freq of %u\n", mod_freq); 476 477 /* Here we pull out the 'length' values from the signal */ 478 len_vals = (u16 *)(sig_data + RR3_HEADER_LENGTH); 479 480 data_vals = sig_data + RR3_HEADER_LENGTH + 481 (header.max_lengths * sizeof(u16)); 482 483 /* process each rr3 encoded byte into an int */ 484 for (i = 0; i < header.sig_size; i++) { 485 u16 val = len_vals[data_vals[i]]; 486 single_len = redrat3_len_to_us((u32)be16_to_cpu(val)); 487 488 /* we should always get pulse/space/pulse/space samples */ 489 if (i % 2) 490 rawir.pulse = false; 491 else 492 rawir.pulse = true; 493 494 rawir.duration = US_TO_NS(single_len); 495 /* Save initial pulse length to fudge trailer */ 496 if (i == 0) 497 trailer = rawir.duration; 498 /* cap the value to IR_MAX_DURATION */ 499 rawir.duration &= IR_MAX_DURATION; 500 501 rr3_dbg(dev, "storing %s with duration %d (i: %d)\n", 502 rawir.pulse ? "pulse" : "space", rawir.duration, i); 503 ir_raw_event_store_with_filter(rr3->rc, &rawir); 504 } 505 506 /* add a trailing space, if need be */ 507 if (i % 2) { 508 rawir.pulse = false; 509 /* this duration is made up, and may not be ideal... */ 510 if (trailer < US_TO_NS(1000)) 511 rawir.duration = US_TO_NS(2800); 512 else 513 rawir.duration = trailer; 514 rr3_dbg(dev, "storing trailing space with duration %d\n", 515 rawir.duration); 516 ir_raw_event_store_with_filter(rr3->rc, &rawir); 517 } 518 519 rr3_dbg(dev, "calling ir_raw_event_handle\n"); 520 ir_raw_event_handle(rr3->rc); 521 522 return; 523 } 524 525 /* Util fn to send rr3 cmds */ 526 static u8 redrat3_send_cmd(int cmd, struct redrat3_dev *rr3) 527 { 528 struct usb_device *udev; 529 u8 *data; 530 int res; 531 532 data = kzalloc(sizeof(u8), GFP_KERNEL); 533 if (!data) 534 return -ENOMEM; 535 536 udev = rr3->udev; 537 res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd, 538 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 539 0x0000, 0x0000, data, sizeof(u8), HZ * 10); 540 541 if (res < 0) { 542 dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d", 543 __func__, res, *data); 544 res = -EIO; 545 } else 546 res = (u8)data[0]; 547 548 kfree(data); 549 550 return res; 551 } 552 553 /* Enables the long range detector and starts async receive */ 554 static int redrat3_enable_detector(struct redrat3_dev *rr3) 555 { 556 struct device *dev = rr3->dev; 557 u8 ret; 558 559 rr3_ftr(dev, "Entering %s\n", __func__); 560 561 ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3); 562 if (ret != 0) 563 dev_dbg(dev, "%s: unexpected ret of %d\n", 564 __func__, ret); 565 566 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); 567 if (ret != 1) { 568 dev_err(dev, "%s: detector status: %d, should be 1\n", 569 __func__, ret); 570 return -EIO; 571 } 572 573 rr3->det_enabled = true; 574 redrat3_issue_async(rr3); 575 576 return 0; 577 } 578 579 /* Disables the rr3 long range detector */ 580 static void redrat3_disable_detector(struct redrat3_dev *rr3) 581 { 582 struct device *dev = rr3->dev; 583 u8 ret; 584 585 rr3_ftr(dev, "Entering %s\n", __func__); 586 587 ret = redrat3_send_cmd(RR3_RC_DET_DISABLE, rr3); 588 if (ret != 0) 589 dev_err(dev, "%s: failure!\n", __func__); 590 591 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); 592 if (ret != 0) 593 dev_warn(dev, "%s: detector status: %d, should be 0\n", 594 __func__, ret); 595 596 rr3->det_enabled = false; 597 } 598 599 static inline void redrat3_delete(struct redrat3_dev *rr3, 600 struct usb_device *udev) 601 { 602 rr3_ftr(rr3->dev, "%s cleaning up\n", __func__); 603 usb_kill_urb(rr3->read_urb); 604 usb_kill_urb(rr3->write_urb); 605 606 usb_free_urb(rr3->read_urb); 607 usb_free_urb(rr3->write_urb); 608 609 usb_free_coherent(udev, rr3->ep_in->wMaxPacketSize, 610 rr3->bulk_in_buf, rr3->dma_in); 611 usb_free_coherent(udev, rr3->ep_out->wMaxPacketSize, 612 rr3->bulk_out_buf, rr3->dma_out); 613 614 kfree(rr3); 615 } 616 617 static u32 redrat3_get_timeout(struct redrat3_dev *rr3) 618 { 619 u32 *tmp; 620 u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */ 621 int len, ret, pipe; 622 623 len = sizeof(*tmp); 624 tmp = kzalloc(len, GFP_KERNEL); 625 if (!tmp) { 626 dev_warn(rr3->dev, "Memory allocation faillure\n"); 627 return timeout; 628 } 629 630 pipe = usb_rcvctrlpipe(rr3->udev, 0); 631 ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM, 632 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 633 RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5); 634 if (ret != len) { 635 dev_warn(rr3->dev, "Failed to read timeout from hardware\n"); 636 return timeout; 637 } 638 639 timeout = redrat3_len_to_us(be32_to_cpu(*tmp)); 640 641 rr3_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000); 642 return timeout; 643 } 644 645 static void redrat3_reset(struct redrat3_dev *rr3) 646 { 647 struct usb_device *udev = rr3->udev; 648 struct device *dev = rr3->dev; 649 int rc, rxpipe, txpipe; 650 u8 *val; 651 int len = sizeof(u8); 652 653 rr3_ftr(dev, "Entering %s\n", __func__); 654 655 rxpipe = usb_rcvctrlpipe(udev, 0); 656 txpipe = usb_sndctrlpipe(udev, 0); 657 658 val = kzalloc(len, GFP_KERNEL); 659 if (!val) { 660 dev_err(dev, "Memory allocation failure\n"); 661 return; 662 } 663 664 *val = 0x01; 665 rc = usb_control_msg(udev, rxpipe, RR3_RESET, 666 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 667 RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25); 668 rr3_dbg(dev, "reset returned 0x%02x\n", rc); 669 670 *val = 5; 671 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, 672 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 673 RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25); 674 rr3_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc); 675 676 *val = RR3_DRIVER_MAXLENS; 677 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, 678 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 679 RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25); 680 rr3_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc); 681 682 kfree(val); 683 } 684 685 static void redrat3_get_firmware_rev(struct redrat3_dev *rr3) 686 { 687 int rc = 0; 688 char *buffer; 689 690 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 691 692 buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL); 693 if (!buffer) { 694 dev_err(rr3->dev, "Memory allocation failure\n"); 695 return; 696 } 697 698 rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0), 699 RR3_FW_VERSION, 700 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 701 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5); 702 703 if (rc >= 0) 704 dev_info(rr3->dev, "Firmware rev: %s", buffer); 705 else 706 dev_err(rr3->dev, "Problem fetching firmware ID\n"); 707 708 kfree(buffer); 709 rr3_ftr(rr3->dev, "Exiting %s\n", __func__); 710 } 711 712 static void redrat3_read_packet_start(struct redrat3_dev *rr3, int len) 713 { 714 u16 tx_error; 715 u16 hdrlen; 716 717 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 718 719 /* grab the Length and type of transfer */ 720 memcpy(&(rr3->pktlen), (unsigned char *) rr3->bulk_in_buf, 721 sizeof(rr3->pktlen)); 722 memcpy(&(rr3->pkttype), ((unsigned char *) rr3->bulk_in_buf + 723 sizeof(rr3->pktlen)), 724 sizeof(rr3->pkttype)); 725 726 /*data needs conversion to know what its real values are*/ 727 rr3->pktlen = be16_to_cpu(rr3->pktlen); 728 rr3->pkttype = be16_to_cpu(rr3->pkttype); 729 730 switch (rr3->pkttype) { 731 case RR3_ERROR: 732 memcpy(&tx_error, ((unsigned char *)rr3->bulk_in_buf 733 + (sizeof(rr3->pktlen) + sizeof(rr3->pkttype))), 734 sizeof(tx_error)); 735 tx_error = be16_to_cpu(tx_error); 736 redrat3_dump_fw_error(rr3, tx_error); 737 break; 738 739 case RR3_MOD_SIGNAL_IN: 740 hdrlen = sizeof(rr3->pktlen) + sizeof(rr3->pkttype); 741 rr3->bytes_read = len; 742 rr3->bytes_read -= hdrlen; 743 rr3->datap = &(rr3->pbuf[0]); 744 745 memcpy(rr3->datap, ((unsigned char *)rr3->bulk_in_buf + hdrlen), 746 rr3->bytes_read); 747 rr3->datap += rr3->bytes_read; 748 rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", 749 rr3->bytes_read, rr3->pktlen); 750 break; 751 752 default: 753 rr3_dbg(rr3->dev, "ignoring packet with type 0x%02x, " 754 "len of %d, 0x%02x\n", rr3->pkttype, len, rr3->pktlen); 755 break; 756 } 757 } 758 759 static void redrat3_read_packet_continue(struct redrat3_dev *rr3, int len) 760 { 761 762 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 763 764 memcpy(rr3->datap, (unsigned char *)rr3->bulk_in_buf, len); 765 rr3->datap += len; 766 767 rr3->bytes_read += len; 768 rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", 769 rr3->bytes_read, rr3->pktlen); 770 } 771 772 /* gather IR data from incoming urb, process it when we have enough */ 773 static int redrat3_get_ir_data(struct redrat3_dev *rr3, int len) 774 { 775 struct device *dev = rr3->dev; 776 int ret = 0; 777 778 rr3_ftr(dev, "Entering %s\n", __func__); 779 780 if (rr3->pktlen > RR3_MAX_BUF_SIZE) { 781 dev_err(rr3->dev, "error: packet larger than buffer\n"); 782 ret = -EINVAL; 783 goto out; 784 } 785 786 if ((rr3->bytes_read == 0) && 787 (len >= (sizeof(rr3->pkttype) + sizeof(rr3->pktlen)))) { 788 redrat3_read_packet_start(rr3, len); 789 } else if (rr3->bytes_read != 0) { 790 redrat3_read_packet_continue(rr3, len); 791 } else if (rr3->bytes_read == 0) { 792 dev_err(dev, "error: no packet data read\n"); 793 ret = -ENODATA; 794 goto out; 795 } 796 797 if (rr3->bytes_read > rr3->pktlen) { 798 dev_err(dev, "bytes_read (%d) greater than pktlen (%d)\n", 799 rr3->bytes_read, rr3->pktlen); 800 ret = -EINVAL; 801 goto out; 802 } else if (rr3->bytes_read < rr3->pktlen) 803 /* we're still accumulating data */ 804 return 0; 805 806 /* if we get here, we've got IR data to decode */ 807 if (rr3->pkttype == RR3_MOD_SIGNAL_IN) 808 redrat3_process_ir_data(rr3); 809 else 810 rr3_dbg(dev, "discarding non-signal data packet " 811 "(type 0x%02x)\n", rr3->pkttype); 812 813 out: 814 rr3->bytes_read = 0; 815 rr3->pktlen = 0; 816 rr3->pkttype = 0; 817 return ret; 818 } 819 820 /* callback function from USB when async USB request has completed */ 821 static void redrat3_handle_async(struct urb *urb, struct pt_regs *regs) 822 { 823 struct redrat3_dev *rr3; 824 int ret; 825 826 if (!urb) 827 return; 828 829 rr3 = urb->context; 830 if (!rr3) { 831 pr_err("%s called with invalid context!\n", __func__); 832 usb_unlink_urb(urb); 833 return; 834 } 835 836 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 837 838 switch (urb->status) { 839 case 0: 840 ret = redrat3_get_ir_data(rr3, urb->actual_length); 841 if (!ret) { 842 /* no error, prepare to read more */ 843 redrat3_issue_async(rr3); 844 } 845 break; 846 847 case -ECONNRESET: 848 case -ENOENT: 849 case -ESHUTDOWN: 850 usb_unlink_urb(urb); 851 return; 852 853 case -EPIPE: 854 default: 855 dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status); 856 rr3->bytes_read = 0; 857 rr3->pktlen = 0; 858 rr3->pkttype = 0; 859 break; 860 } 861 } 862 863 static void redrat3_write_bulk_callback(struct urb *urb, struct pt_regs *regs) 864 { 865 struct redrat3_dev *rr3; 866 int len; 867 868 if (!urb) 869 return; 870 871 rr3 = urb->context; 872 if (rr3) { 873 len = urb->actual_length; 874 rr3_ftr(rr3->dev, "%s: called (status=%d len=%d)\n", 875 __func__, urb->status, len); 876 } 877 } 878 879 static u16 mod_freq_to_val(unsigned int mod_freq) 880 { 881 int mult = 6000000; 882 883 /* Clk used in mod. freq. generation is CLK24/4. */ 884 return (u16)(65536 - (mult / mod_freq)); 885 } 886 887 static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier) 888 { 889 struct redrat3_dev *rr3 = rcdev->priv; 890 struct device *dev = rr3->dev; 891 892 rr3_dbg(dev, "Setting modulation frequency to %u", carrier); 893 if (carrier == 0) 894 return -EINVAL; 895 896 rr3->carrier = carrier; 897 898 return carrier; 899 } 900 901 static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf, 902 unsigned count) 903 { 904 struct redrat3_dev *rr3 = rcdev->priv; 905 struct device *dev = rr3->dev; 906 struct redrat3_signal_header header; 907 int i, j, ret, ret_len, offset; 908 int lencheck, cur_sample_len, pipe; 909 char *buffer = NULL, *sigdata = NULL; 910 int *sample_lens = NULL; 911 u32 tmpi; 912 u16 tmps; 913 u8 *datap; 914 u8 curlencheck = 0; 915 u16 *lengths_ptr; 916 int sendbuf_len; 917 918 rr3_ftr(dev, "Entering %s\n", __func__); 919 920 if (rr3->transmitting) { 921 dev_warn(dev, "%s: transmitter already in use\n", __func__); 922 return -EAGAIN; 923 } 924 925 if (count > (RR3_DRIVER_MAXLENS * 2)) 926 return -EINVAL; 927 928 /* rr3 will disable rc detector on transmit */ 929 rr3->det_enabled = false; 930 rr3->transmitting = true; 931 932 sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL); 933 if (!sample_lens) { 934 ret = -ENOMEM; 935 goto out; 936 } 937 938 for (i = 0; i < count; i++) { 939 for (lencheck = 0; lencheck < curlencheck; lencheck++) { 940 cur_sample_len = redrat3_us_to_len(txbuf[i]); 941 if (sample_lens[lencheck] == cur_sample_len) 942 break; 943 } 944 if (lencheck == curlencheck) { 945 cur_sample_len = redrat3_us_to_len(txbuf[i]); 946 rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n", 947 i, txbuf[i], curlencheck, cur_sample_len); 948 if (curlencheck < 255) { 949 /* now convert the value to a proper 950 * rr3 value.. */ 951 sample_lens[curlencheck] = cur_sample_len; 952 curlencheck++; 953 } else { 954 dev_err(dev, "signal too long\n"); 955 ret = -EINVAL; 956 goto out; 957 } 958 } 959 } 960 961 sigdata = kzalloc((count + RR3_TX_TRAILER_LEN), GFP_KERNEL); 962 if (!sigdata) { 963 ret = -ENOMEM; 964 goto out; 965 } 966 967 sigdata[count] = RR3_END_OF_SIGNAL; 968 sigdata[count + 1] = RR3_END_OF_SIGNAL; 969 for (i = 0; i < count; i++) { 970 for (j = 0; j < curlencheck; j++) { 971 if (sample_lens[j] == redrat3_us_to_len(txbuf[i])) 972 sigdata[i] = j; 973 } 974 } 975 976 offset = RR3_TX_HEADER_OFFSET; 977 sendbuf_len = RR3_HEADER_LENGTH + (sizeof(u16) * RR3_DRIVER_MAXLENS) 978 + count + RR3_TX_TRAILER_LEN + offset; 979 980 buffer = kzalloc(sendbuf_len, GFP_KERNEL); 981 if (!buffer) { 982 ret = -ENOMEM; 983 goto out; 984 } 985 986 /* fill in our packet header */ 987 header.length = sendbuf_len - offset; 988 header.transfer_type = RR3_MOD_SIGNAL_OUT; 989 header.pause = redrat3_len_to_us(100); 990 header.mod_freq_count = mod_freq_to_val(rr3->carrier); 991 header.no_periods = 0; /* n/a to transmit */ 992 header.max_lengths = RR3_DRIVER_MAXLENS; 993 header.no_lengths = curlencheck; 994 header.max_sig_size = RR3_MAX_SIG_SIZE; 995 header.sig_size = count + RR3_TX_TRAILER_LEN; 996 /* we currently rely on repeat handling in the IR encoding source */ 997 header.no_repeats = 0; 998 999 tmps = cpu_to_be16(header.length); 1000 memcpy(buffer, &tmps, 2); 1001 1002 tmps = cpu_to_be16(header.transfer_type); 1003 memcpy(buffer + 2, &tmps, 2); 1004 1005 tmpi = cpu_to_be32(header.pause); 1006 memcpy(buffer + offset, &tmpi, sizeof(tmpi)); 1007 1008 tmps = cpu_to_be16(header.mod_freq_count); 1009 memcpy(buffer + offset + RR3_FREQ_COUNT_OFFSET, &tmps, 2); 1010 1011 buffer[offset + RR3_NUM_LENGTHS_OFFSET] = header.no_lengths; 1012 1013 tmps = cpu_to_be16(header.sig_size); 1014 memcpy(buffer + offset + RR3_NUM_SIGS_OFFSET, &tmps, 2); 1015 1016 buffer[offset + RR3_REPEATS_OFFSET] = header.no_repeats; 1017 1018 lengths_ptr = (u16 *)(buffer + offset + RR3_HEADER_LENGTH); 1019 for (i = 0; i < curlencheck; ++i) 1020 lengths_ptr[i] = cpu_to_be16(sample_lens[i]); 1021 1022 datap = (u8 *)(buffer + offset + RR3_HEADER_LENGTH + 1023 (sizeof(u16) * RR3_DRIVER_MAXLENS)); 1024 memcpy(datap, sigdata, (count + RR3_TX_TRAILER_LEN)); 1025 1026 if (debug) { 1027 redrat3_dump_signal_header(&header); 1028 redrat3_dump_signal_data(buffer, header.sig_size); 1029 } 1030 1031 pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress); 1032 tmps = usb_bulk_msg(rr3->udev, pipe, buffer, 1033 sendbuf_len, &ret_len, 10 * HZ); 1034 rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, tmps); 1035 1036 /* now tell the hardware to transmit what we sent it */ 1037 pipe = usb_rcvctrlpipe(rr3->udev, 0); 1038 ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL, 1039 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 1040 0, 0, buffer, 2, HZ * 10); 1041 1042 if (ret < 0) 1043 dev_err(dev, "Error: control msg send failed, rc %d\n", ret); 1044 else 1045 ret = count; 1046 1047 out: 1048 kfree(sample_lens); 1049 kfree(buffer); 1050 kfree(sigdata); 1051 1052 rr3->transmitting = false; 1053 /* rr3 re-enables rc detector because it was enabled before */ 1054 rr3->det_enabled = true; 1055 1056 return ret; 1057 } 1058 1059 static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3) 1060 { 1061 struct device *dev = rr3->dev; 1062 struct rc_dev *rc; 1063 int ret = -ENODEV; 1064 u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct); 1065 1066 rc = rc_allocate_device(); 1067 if (!rc) { 1068 dev_err(dev, "remote input dev allocation failed\n"); 1069 goto out; 1070 } 1071 1072 snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s " 1073 "Infrared Remote Transceiver (%04x:%04x)", 1074 prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "", 1075 le16_to_cpu(rr3->udev->descriptor.idVendor), prod); 1076 1077 usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys)); 1078 1079 rc->input_name = rr3->name; 1080 rc->input_phys = rr3->phys; 1081 usb_to_input_id(rr3->udev, &rc->input_id); 1082 rc->dev.parent = dev; 1083 rc->priv = rr3; 1084 rc->driver_type = RC_DRIVER_IR_RAW; 1085 rc->allowed_protos = RC_BIT_ALL; 1086 rc->timeout = US_TO_NS(2750); 1087 rc->tx_ir = redrat3_transmit_ir; 1088 rc->s_tx_carrier = redrat3_set_tx_carrier; 1089 rc->driver_name = DRIVER_NAME; 1090 rc->map_name = RC_MAP_HAUPPAUGE; 1091 1092 ret = rc_register_device(rc); 1093 if (ret < 0) { 1094 dev_err(dev, "remote dev registration failed\n"); 1095 goto out; 1096 } 1097 1098 return rc; 1099 1100 out: 1101 rc_free_device(rc); 1102 return NULL; 1103 } 1104 1105 static int redrat3_dev_probe(struct usb_interface *intf, 1106 const struct usb_device_id *id) 1107 { 1108 struct usb_device *udev = interface_to_usbdev(intf); 1109 struct device *dev = &intf->dev; 1110 struct usb_host_interface *uhi; 1111 struct redrat3_dev *rr3; 1112 struct usb_endpoint_descriptor *ep; 1113 struct usb_endpoint_descriptor *ep_in = NULL; 1114 struct usb_endpoint_descriptor *ep_out = NULL; 1115 u8 addr, attrs; 1116 int pipe, i; 1117 int retval = -ENOMEM; 1118 1119 rr3_ftr(dev, "%s called\n", __func__); 1120 1121 uhi = intf->cur_altsetting; 1122 1123 /* find our bulk-in and bulk-out endpoints */ 1124 for (i = 0; i < uhi->desc.bNumEndpoints; ++i) { 1125 ep = &uhi->endpoint[i].desc; 1126 addr = ep->bEndpointAddress; 1127 attrs = ep->bmAttributes; 1128 1129 if ((ep_in == NULL) && 1130 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && 1131 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == 1132 USB_ENDPOINT_XFER_BULK)) { 1133 rr3_dbg(dev, "found bulk-in endpoint at 0x%02x\n", 1134 ep->bEndpointAddress); 1135 /* data comes in on 0x82, 0x81 is for other data... */ 1136 if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR) 1137 ep_in = ep; 1138 } 1139 1140 if ((ep_out == NULL) && 1141 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && 1142 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == 1143 USB_ENDPOINT_XFER_BULK)) { 1144 rr3_dbg(dev, "found bulk-out endpoint at 0x%02x\n", 1145 ep->bEndpointAddress); 1146 ep_out = ep; 1147 } 1148 } 1149 1150 if (!ep_in || !ep_out) { 1151 dev_err(dev, "Couldn't find both in and out endpoints\n"); 1152 retval = -ENODEV; 1153 goto no_endpoints; 1154 } 1155 1156 /* allocate memory for our device state and initialize it */ 1157 rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL); 1158 if (rr3 == NULL) { 1159 dev_err(dev, "Memory allocation failure\n"); 1160 goto no_endpoints; 1161 } 1162 1163 rr3->dev = &intf->dev; 1164 1165 /* set up bulk-in endpoint */ 1166 rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL); 1167 if (!rr3->read_urb) { 1168 dev_err(dev, "Read urb allocation failure\n"); 1169 goto error; 1170 } 1171 1172 rr3->ep_in = ep_in; 1173 rr3->bulk_in_buf = usb_alloc_coherent(udev, ep_in->wMaxPacketSize, 1174 GFP_ATOMIC, &rr3->dma_in); 1175 if (!rr3->bulk_in_buf) { 1176 dev_err(dev, "Read buffer allocation failure\n"); 1177 goto error; 1178 } 1179 1180 pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress); 1181 usb_fill_bulk_urb(rr3->read_urb, udev, pipe, 1182 rr3->bulk_in_buf, ep_in->wMaxPacketSize, 1183 (usb_complete_t)redrat3_handle_async, rr3); 1184 1185 /* set up bulk-out endpoint*/ 1186 rr3->write_urb = usb_alloc_urb(0, GFP_KERNEL); 1187 if (!rr3->write_urb) { 1188 dev_err(dev, "Write urb allocation failure\n"); 1189 goto error; 1190 } 1191 1192 rr3->ep_out = ep_out; 1193 rr3->bulk_out_buf = usb_alloc_coherent(udev, ep_out->wMaxPacketSize, 1194 GFP_ATOMIC, &rr3->dma_out); 1195 if (!rr3->bulk_out_buf) { 1196 dev_err(dev, "Write buffer allocation failure\n"); 1197 goto error; 1198 } 1199 1200 pipe = usb_sndbulkpipe(udev, ep_out->bEndpointAddress); 1201 usb_fill_bulk_urb(rr3->write_urb, udev, pipe, 1202 rr3->bulk_out_buf, ep_out->wMaxPacketSize, 1203 (usb_complete_t)redrat3_write_bulk_callback, rr3); 1204 1205 mutex_init(&rr3->lock); 1206 rr3->udev = udev; 1207 1208 redrat3_reset(rr3); 1209 redrat3_get_firmware_rev(rr3); 1210 1211 /* might be all we need to do? */ 1212 retval = redrat3_enable_detector(rr3); 1213 if (retval < 0) 1214 goto error; 1215 1216 /* store current hardware timeout, in us, will use for kfifo resets */ 1217 rr3->hw_timeout = redrat3_get_timeout(rr3); 1218 1219 /* default.. will get overridden by any sends with a freq defined */ 1220 rr3->carrier = 38000; 1221 1222 rr3->rc = redrat3_init_rc_dev(rr3); 1223 if (!rr3->rc) { 1224 retval = -ENOMEM; 1225 goto error; 1226 } 1227 setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3); 1228 1229 /* we can register the device now, as it is ready */ 1230 usb_set_intfdata(intf, rr3); 1231 1232 rr3_ftr(dev, "Exiting %s\n", __func__); 1233 return 0; 1234 1235 error: 1236 redrat3_delete(rr3, rr3->udev); 1237 1238 no_endpoints: 1239 dev_err(dev, "%s: retval = %x", __func__, retval); 1240 1241 return retval; 1242 } 1243 1244 static void redrat3_dev_disconnect(struct usb_interface *intf) 1245 { 1246 struct usb_device *udev = interface_to_usbdev(intf); 1247 struct redrat3_dev *rr3 = usb_get_intfdata(intf); 1248 1249 rr3_ftr(&intf->dev, "Entering %s\n", __func__); 1250 1251 if (!rr3) 1252 return; 1253 1254 redrat3_disable_detector(rr3); 1255 1256 usb_set_intfdata(intf, NULL); 1257 rc_unregister_device(rr3->rc); 1258 del_timer_sync(&rr3->rx_timeout); 1259 redrat3_delete(rr3, udev); 1260 1261 rr3_ftr(&intf->dev, "RedRat3 IR Transceiver now disconnected\n"); 1262 } 1263 1264 static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message) 1265 { 1266 struct redrat3_dev *rr3 = usb_get_intfdata(intf); 1267 rr3_ftr(rr3->dev, "suspend\n"); 1268 usb_kill_urb(rr3->read_urb); 1269 return 0; 1270 } 1271 1272 static int redrat3_dev_resume(struct usb_interface *intf) 1273 { 1274 struct redrat3_dev *rr3 = usb_get_intfdata(intf); 1275 rr3_ftr(rr3->dev, "resume\n"); 1276 if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC)) 1277 return -EIO; 1278 return 0; 1279 } 1280 1281 static struct usb_driver redrat3_dev_driver = { 1282 .name = DRIVER_NAME, 1283 .probe = redrat3_dev_probe, 1284 .disconnect = redrat3_dev_disconnect, 1285 .suspend = redrat3_dev_suspend, 1286 .resume = redrat3_dev_resume, 1287 .reset_resume = redrat3_dev_resume, 1288 .id_table = redrat3_dev_table 1289 }; 1290 1291 module_usb_driver(redrat3_dev_driver); 1292 1293 MODULE_DESCRIPTION(DRIVER_DESC); 1294 MODULE_AUTHOR(DRIVER_AUTHOR); 1295 MODULE_AUTHOR(DRIVER_AUTHOR2); 1296 MODULE_LICENSE("GPL"); 1297 MODULE_DEVICE_TABLE(usb, redrat3_dev_table); 1298 1299 module_param(debug, int, S_IRUGO | S_IWUSR); 1300 MODULE_PARM_DESC(debug, "Enable module debug spew. 0 = no debugging (default) " 1301 "0x1 = standard debug messages, 0x2 = function tracing debug. " 1302 "Flag bits are addative (i.e., 0x3 for both debug types)."); 1303