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 /* true if write urb is busy */ 199 bool write_busy; 200 /* wait for the write to finish */ 201 struct completion write_finished; 202 203 /* locks this structure */ 204 struct mutex lock; 205 206 /* rx signal timeout timer */ 207 struct timer_list rx_timeout; 208 u32 hw_timeout; 209 210 /* Is the device currently receiving? */ 211 bool recv_in_progress; 212 /* is the detector enabled*/ 213 bool det_enabled; 214 /* Is the device currently transmitting?*/ 215 bool transmitting; 216 217 /* store for current packet */ 218 char pbuf[RR3_MAX_BUF_SIZE]; 219 u16 pktlen; 220 u16 pkttype; 221 u16 bytes_read; 222 /* indicate whether we are going to reprocess 223 * the USB callback with a bigger buffer */ 224 int buftoosmall; 225 char *datap; 226 227 u32 carrier; 228 229 char name[128]; 230 char phys[64]; 231 }; 232 233 /* All incoming data buffers adhere to a very specific data format */ 234 struct redrat3_signal_header { 235 u16 length; /* Length of data being transferred */ 236 u16 transfer_type; /* Type of data transferred */ 237 u32 pause; /* Pause between main and repeat signals */ 238 u16 mod_freq_count; /* Value of timer on mod. freq. measurement */ 239 u16 no_periods; /* No. of periods over which mod. freq. is measured */ 240 u8 max_lengths; /* Max no. of lengths (i.e. size of array) */ 241 u8 no_lengths; /* Actual no. of elements in lengths array */ 242 u16 max_sig_size; /* Max no. of values in signal data array */ 243 u16 sig_size; /* Acuto no. of values in signal data array */ 244 u8 no_repeats; /* No. of repeats of repeat signal section */ 245 /* Here forward is the lengths and signal data */ 246 }; 247 248 static void redrat3_dump_signal_header(struct redrat3_signal_header *header) 249 { 250 pr_info("%s:\n", __func__); 251 pr_info(" * length: %u, transfer_type: 0x%02x\n", 252 header->length, header->transfer_type); 253 pr_info(" * pause: %u, freq_count: %u, no_periods: %u\n", 254 header->pause, header->mod_freq_count, header->no_periods); 255 pr_info(" * lengths: %u (max: %u)\n", 256 header->no_lengths, header->max_lengths); 257 pr_info(" * sig_size: %u (max: %u)\n", 258 header->sig_size, header->max_sig_size); 259 pr_info(" * repeats: %u\n", header->no_repeats); 260 } 261 262 static void redrat3_dump_signal_data(char *buffer, u16 len) 263 { 264 int offset, i; 265 char *data_vals; 266 267 pr_info("%s:", __func__); 268 269 offset = RR3_TX_HEADER_OFFSET + RR3_HEADER_LENGTH 270 + (RR3_DRIVER_MAXLENS * sizeof(u16)); 271 272 /* read RR3_DRIVER_MAXLENS from ctrl msg */ 273 data_vals = buffer + offset; 274 275 for (i = 0; i < len; i++) { 276 if (i % 10 == 0) 277 pr_cont("\n * "); 278 pr_cont("%02x ", *data_vals++); 279 } 280 281 pr_cont("\n"); 282 } 283 284 /* 285 * redrat3_issue_async 286 * 287 * Issues an async read to the ir data in port.. 288 * sets the callback to be redrat3_handle_async 289 */ 290 static void redrat3_issue_async(struct redrat3_dev *rr3) 291 { 292 int res; 293 294 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 295 296 if (!rr3->det_enabled) { 297 dev_warn(rr3->dev, "not issuing async read, " 298 "detector not enabled\n"); 299 return; 300 } 301 302 memset(rr3->bulk_in_buf, 0, rr3->ep_in->wMaxPacketSize); 303 res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC); 304 if (res) 305 rr3_dbg(rr3->dev, "%s: receive request FAILED! " 306 "(res %d, len %d)\n", __func__, res, 307 rr3->read_urb->transfer_buffer_length); 308 } 309 310 static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code) 311 { 312 if (!rr3->transmitting && (code != 0x40)) 313 dev_info(rr3->dev, "fw error code 0x%02x: ", code); 314 315 switch (code) { 316 case 0x00: 317 pr_cont("No Error\n"); 318 break; 319 320 /* Codes 0x20 through 0x2f are IR Firmware Errors */ 321 case 0x20: 322 pr_cont("Initial signal pulse not long enough " 323 "to measure carrier frequency\n"); 324 break; 325 case 0x21: 326 pr_cont("Not enough length values allocated for signal\n"); 327 break; 328 case 0x22: 329 pr_cont("Not enough memory allocated for signal data\n"); 330 break; 331 case 0x23: 332 pr_cont("Too many signal repeats\n"); 333 break; 334 case 0x28: 335 pr_cont("Insufficient memory available for IR signal " 336 "data memory allocation\n"); 337 break; 338 case 0x29: 339 pr_cont("Insufficient memory available " 340 "for IrDa signal data memory allocation\n"); 341 break; 342 343 /* Codes 0x30 through 0x3f are USB Firmware Errors */ 344 case 0x30: 345 pr_cont("Insufficient memory available for bulk " 346 "transfer structure\n"); 347 break; 348 349 /* 350 * Other error codes... These are primarily errors that can occur in 351 * the control messages sent to the redrat 352 */ 353 case 0x40: 354 if (!rr3->transmitting) 355 pr_cont("Signal capture has been terminated\n"); 356 break; 357 case 0x41: 358 pr_cont("Attempt to set/get and unknown signal I/O " 359 "algorithm parameter\n"); 360 break; 361 case 0x42: 362 pr_cont("Signal capture already started\n"); 363 break; 364 365 default: 366 pr_cont("Unknown Error\n"); 367 break; 368 } 369 } 370 371 static u32 redrat3_val_to_mod_freq(struct redrat3_signal_header *ph) 372 { 373 u32 mod_freq = 0; 374 375 if (ph->mod_freq_count != 0) 376 mod_freq = (RR3_CLK * ph->no_periods) / 377 (ph->mod_freq_count * RR3_CLK_PER_COUNT); 378 379 return mod_freq; 380 } 381 382 /* this function scales down the figures for the same result... */ 383 static u32 redrat3_len_to_us(u32 length) 384 { 385 u32 biglen = length * 1000; 386 u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000; 387 u32 result = (u32) (biglen / divisor); 388 389 /* don't allow zero lengths to go back, breaks lirc */ 390 return result ? result : 1; 391 } 392 393 /* 394 * convert us back into redrat3 lengths 395 * 396 * length * 1000 length * 1000000 397 * ------------- = ---------------- = micro 398 * rr3clk / 1000 rr3clk 399 400 * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000 401 * ----- = 4 ----- = 6 -------------- = len --------------------- 402 * 3 2 1000000 1000 403 */ 404 static u32 redrat3_us_to_len(u32 microsec) 405 { 406 u32 result; 407 u32 divisor; 408 409 microsec &= IR_MAX_DURATION; 410 divisor = (RR3_CLK_CONV_FACTOR / 1000); 411 result = (u32)(microsec * divisor) / 1000; 412 413 /* don't allow zero lengths to go back, breaks lirc */ 414 return result ? result : 1; 415 416 } 417 418 /* timer callback to send reset event */ 419 static void redrat3_rx_timeout(unsigned long data) 420 { 421 struct redrat3_dev *rr3 = (struct redrat3_dev *)data; 422 423 rr3_dbg(rr3->dev, "calling ir_raw_event_reset\n"); 424 ir_raw_event_reset(rr3->rc); 425 } 426 427 static void redrat3_process_ir_data(struct redrat3_dev *rr3) 428 { 429 DEFINE_IR_RAW_EVENT(rawir); 430 struct redrat3_signal_header header; 431 struct device *dev; 432 int i, trailer = 0; 433 unsigned long delay; 434 u32 mod_freq, single_len; 435 u16 *len_vals; 436 u8 *data_vals; 437 u32 tmp32; 438 u16 tmp16; 439 char *sig_data; 440 441 if (!rr3) { 442 pr_err("%s called with no context!\n", __func__); 443 return; 444 } 445 446 rr3_ftr(rr3->dev, "Entered %s\n", __func__); 447 448 dev = rr3->dev; 449 sig_data = rr3->pbuf; 450 451 header.length = rr3->pktlen; 452 header.transfer_type = rr3->pkttype; 453 454 /* Sanity check */ 455 if (!(header.length >= RR3_HEADER_LENGTH)) 456 dev_warn(dev, "read returned less than rr3 header len\n"); 457 458 /* Make sure we reset the IR kfifo after a bit of inactivity */ 459 delay = usecs_to_jiffies(rr3->hw_timeout); 460 mod_timer(&rr3->rx_timeout, jiffies + delay); 461 462 memcpy(&tmp32, sig_data + RR3_PAUSE_OFFSET, sizeof(tmp32)); 463 header.pause = be32_to_cpu(tmp32); 464 465 memcpy(&tmp16, sig_data + RR3_FREQ_COUNT_OFFSET, sizeof(tmp16)); 466 header.mod_freq_count = be16_to_cpu(tmp16); 467 468 memcpy(&tmp16, sig_data + RR3_NUM_PERIOD_OFFSET, sizeof(tmp16)); 469 header.no_periods = be16_to_cpu(tmp16); 470 471 header.max_lengths = sig_data[RR3_MAX_LENGTHS_OFFSET]; 472 header.no_lengths = sig_data[RR3_NUM_LENGTHS_OFFSET]; 473 474 memcpy(&tmp16, sig_data + RR3_MAX_SIGS_OFFSET, sizeof(tmp16)); 475 header.max_sig_size = be16_to_cpu(tmp16); 476 477 memcpy(&tmp16, sig_data + RR3_NUM_SIGS_OFFSET, sizeof(tmp16)); 478 header.sig_size = be16_to_cpu(tmp16); 479 480 header.no_repeats= sig_data[RR3_REPEATS_OFFSET]; 481 482 if (debug) { 483 redrat3_dump_signal_header(&header); 484 redrat3_dump_signal_data(sig_data, header.sig_size); 485 } 486 487 mod_freq = redrat3_val_to_mod_freq(&header); 488 rr3_dbg(dev, "Got mod_freq of %u\n", mod_freq); 489 490 /* Here we pull out the 'length' values from the signal */ 491 len_vals = (u16 *)(sig_data + RR3_HEADER_LENGTH); 492 493 data_vals = sig_data + RR3_HEADER_LENGTH + 494 (header.max_lengths * sizeof(u16)); 495 496 /* process each rr3 encoded byte into an int */ 497 for (i = 0; i < header.sig_size; i++) { 498 u16 val = len_vals[data_vals[i]]; 499 single_len = redrat3_len_to_us((u32)be16_to_cpu(val)); 500 501 /* we should always get pulse/space/pulse/space samples */ 502 if (i % 2) 503 rawir.pulse = false; 504 else 505 rawir.pulse = true; 506 507 rawir.duration = US_TO_NS(single_len); 508 /* Save initial pulse length to fudge trailer */ 509 if (i == 0) 510 trailer = rawir.duration; 511 /* cap the value to IR_MAX_DURATION */ 512 rawir.duration &= IR_MAX_DURATION; 513 514 rr3_dbg(dev, "storing %s with duration %d (i: %d)\n", 515 rawir.pulse ? "pulse" : "space", rawir.duration, i); 516 ir_raw_event_store_with_filter(rr3->rc, &rawir); 517 } 518 519 /* add a trailing space, if need be */ 520 if (i % 2) { 521 rawir.pulse = false; 522 /* this duration is made up, and may not be ideal... */ 523 if (trailer < US_TO_NS(1000)) 524 rawir.duration = US_TO_NS(2800); 525 else 526 rawir.duration = trailer; 527 rr3_dbg(dev, "storing trailing space with duration %d\n", 528 rawir.duration); 529 ir_raw_event_store_with_filter(rr3->rc, &rawir); 530 } 531 532 rr3_dbg(dev, "calling ir_raw_event_handle\n"); 533 ir_raw_event_handle(rr3->rc); 534 535 return; 536 } 537 538 /* Util fn to send rr3 cmds */ 539 static u8 redrat3_send_cmd(int cmd, struct redrat3_dev *rr3) 540 { 541 struct usb_device *udev; 542 u8 *data; 543 int res; 544 545 data = kzalloc(sizeof(u8), GFP_KERNEL); 546 if (!data) 547 return -ENOMEM; 548 549 udev = rr3->udev; 550 res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd, 551 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 552 0x0000, 0x0000, data, sizeof(u8), HZ * 10); 553 554 if (res < 0) { 555 dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d", 556 __func__, res, *data); 557 res = -EIO; 558 } else 559 res = (u8)data[0]; 560 561 kfree(data); 562 563 return res; 564 } 565 566 /* Enables the long range detector and starts async receive */ 567 static int redrat3_enable_detector(struct redrat3_dev *rr3) 568 { 569 struct device *dev = rr3->dev; 570 u8 ret; 571 572 rr3_ftr(dev, "Entering %s\n", __func__); 573 574 ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3); 575 if (ret != 0) 576 dev_dbg(dev, "%s: unexpected ret of %d\n", 577 __func__, ret); 578 579 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); 580 if (ret != 1) { 581 dev_err(dev, "%s: detector status: %d, should be 1\n", 582 __func__, ret); 583 return -EIO; 584 } 585 586 rr3->det_enabled = true; 587 redrat3_issue_async(rr3); 588 589 return 0; 590 } 591 592 /* Disables the rr3 long range detector */ 593 static void redrat3_disable_detector(struct redrat3_dev *rr3) 594 { 595 struct device *dev = rr3->dev; 596 u8 ret; 597 598 rr3_ftr(dev, "Entering %s\n", __func__); 599 600 ret = redrat3_send_cmd(RR3_RC_DET_DISABLE, rr3); 601 if (ret != 0) 602 dev_err(dev, "%s: failure!\n", __func__); 603 604 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); 605 if (ret != 0) 606 dev_warn(dev, "%s: detector status: %d, should be 0\n", 607 __func__, ret); 608 609 rr3->det_enabled = false; 610 } 611 612 static inline void redrat3_delete(struct redrat3_dev *rr3, 613 struct usb_device *udev) 614 { 615 rr3_ftr(rr3->dev, "%s cleaning up\n", __func__); 616 usb_kill_urb(rr3->read_urb); 617 usb_kill_urb(rr3->write_urb); 618 619 usb_free_urb(rr3->read_urb); 620 usb_free_urb(rr3->write_urb); 621 622 usb_free_coherent(udev, rr3->ep_in->wMaxPacketSize, 623 rr3->bulk_in_buf, rr3->dma_in); 624 usb_free_coherent(udev, rr3->ep_out->wMaxPacketSize, 625 rr3->bulk_out_buf, rr3->dma_out); 626 627 kfree(rr3); 628 } 629 630 static u32 redrat3_get_timeout(struct redrat3_dev *rr3) 631 { 632 u32 *tmp; 633 u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */ 634 int len, ret, pipe; 635 636 len = sizeof(*tmp); 637 tmp = kzalloc(len, GFP_KERNEL); 638 if (!tmp) { 639 dev_warn(rr3->dev, "Memory allocation faillure\n"); 640 return timeout; 641 } 642 643 pipe = usb_rcvctrlpipe(rr3->udev, 0); 644 ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM, 645 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 646 RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5); 647 if (ret != len) { 648 dev_warn(rr3->dev, "Failed to read timeout from hardware\n"); 649 return timeout; 650 } 651 652 timeout = redrat3_len_to_us(be32_to_cpu(*tmp)); 653 654 rr3_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000); 655 return timeout; 656 } 657 658 static void redrat3_reset(struct redrat3_dev *rr3) 659 { 660 struct usb_device *udev = rr3->udev; 661 struct device *dev = rr3->dev; 662 int rc, rxpipe, txpipe; 663 u8 *val; 664 int len = sizeof(u8); 665 666 rr3_ftr(dev, "Entering %s\n", __func__); 667 668 rxpipe = usb_rcvctrlpipe(udev, 0); 669 txpipe = usb_sndctrlpipe(udev, 0); 670 671 val = kzalloc(len, GFP_KERNEL); 672 if (!val) { 673 dev_err(dev, "Memory allocation failure\n"); 674 return; 675 } 676 677 *val = 0x01; 678 rc = usb_control_msg(udev, rxpipe, RR3_RESET, 679 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 680 RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25); 681 rr3_dbg(dev, "reset returned 0x%02x\n", rc); 682 683 *val = 5; 684 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, 685 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 686 RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25); 687 rr3_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc); 688 689 *val = RR3_DRIVER_MAXLENS; 690 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, 691 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 692 RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25); 693 rr3_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc); 694 695 kfree(val); 696 } 697 698 static void redrat3_get_firmware_rev(struct redrat3_dev *rr3) 699 { 700 int rc = 0; 701 char *buffer; 702 703 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 704 705 buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL); 706 if (!buffer) { 707 dev_err(rr3->dev, "Memory allocation failure\n"); 708 return; 709 } 710 711 rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0), 712 RR3_FW_VERSION, 713 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 714 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5); 715 716 if (rc >= 0) 717 dev_info(rr3->dev, "Firmware rev: %s", buffer); 718 else 719 dev_err(rr3->dev, "Problem fetching firmware ID\n"); 720 721 kfree(buffer); 722 rr3_ftr(rr3->dev, "Exiting %s\n", __func__); 723 } 724 725 static void redrat3_read_packet_start(struct redrat3_dev *rr3, int len) 726 { 727 u16 tx_error; 728 u16 hdrlen; 729 730 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 731 732 /* grab the Length and type of transfer */ 733 memcpy(&(rr3->pktlen), (unsigned char *) rr3->bulk_in_buf, 734 sizeof(rr3->pktlen)); 735 memcpy(&(rr3->pkttype), ((unsigned char *) rr3->bulk_in_buf + 736 sizeof(rr3->pktlen)), 737 sizeof(rr3->pkttype)); 738 739 /*data needs conversion to know what its real values are*/ 740 rr3->pktlen = be16_to_cpu(rr3->pktlen); 741 rr3->pkttype = be16_to_cpu(rr3->pkttype); 742 743 switch (rr3->pkttype) { 744 case RR3_ERROR: 745 memcpy(&tx_error, ((unsigned char *)rr3->bulk_in_buf 746 + (sizeof(rr3->pktlen) + sizeof(rr3->pkttype))), 747 sizeof(tx_error)); 748 tx_error = be16_to_cpu(tx_error); 749 redrat3_dump_fw_error(rr3, tx_error); 750 break; 751 752 case RR3_MOD_SIGNAL_IN: 753 hdrlen = sizeof(rr3->pktlen) + sizeof(rr3->pkttype); 754 rr3->bytes_read = len; 755 rr3->bytes_read -= hdrlen; 756 rr3->datap = &(rr3->pbuf[0]); 757 758 memcpy(rr3->datap, ((unsigned char *)rr3->bulk_in_buf + hdrlen), 759 rr3->bytes_read); 760 rr3->datap += rr3->bytes_read; 761 rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", 762 rr3->bytes_read, rr3->pktlen); 763 break; 764 765 default: 766 rr3_dbg(rr3->dev, "ignoring packet with type 0x%02x, " 767 "len of %d, 0x%02x\n", rr3->pkttype, len, rr3->pktlen); 768 break; 769 } 770 } 771 772 static void redrat3_read_packet_continue(struct redrat3_dev *rr3, int len) 773 { 774 775 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 776 777 memcpy(rr3->datap, (unsigned char *)rr3->bulk_in_buf, len); 778 rr3->datap += len; 779 780 rr3->bytes_read += len; 781 rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", 782 rr3->bytes_read, rr3->pktlen); 783 } 784 785 /* gather IR data from incoming urb, process it when we have enough */ 786 static int redrat3_get_ir_data(struct redrat3_dev *rr3, int len) 787 { 788 struct device *dev = rr3->dev; 789 int ret = 0; 790 791 rr3_ftr(dev, "Entering %s\n", __func__); 792 793 if (rr3->pktlen > RR3_MAX_BUF_SIZE) { 794 dev_err(rr3->dev, "error: packet larger than buffer\n"); 795 ret = -EINVAL; 796 goto out; 797 } 798 799 if ((rr3->bytes_read == 0) && 800 (len >= (sizeof(rr3->pkttype) + sizeof(rr3->pktlen)))) { 801 redrat3_read_packet_start(rr3, len); 802 } else if (rr3->bytes_read != 0) { 803 redrat3_read_packet_continue(rr3, len); 804 } else if (rr3->bytes_read == 0) { 805 dev_err(dev, "error: no packet data read\n"); 806 ret = -ENODATA; 807 goto out; 808 } 809 810 if (rr3->bytes_read > rr3->pktlen) { 811 dev_err(dev, "bytes_read (%d) greater than pktlen (%d)\n", 812 rr3->bytes_read, rr3->pktlen); 813 ret = -EINVAL; 814 goto out; 815 } else if (rr3->bytes_read < rr3->pktlen) 816 /* we're still accumulating data */ 817 return 0; 818 819 /* if we get here, we've got IR data to decode */ 820 if (rr3->pkttype == RR3_MOD_SIGNAL_IN) 821 redrat3_process_ir_data(rr3); 822 else 823 rr3_dbg(dev, "discarding non-signal data packet " 824 "(type 0x%02x)\n", rr3->pkttype); 825 826 out: 827 rr3->bytes_read = 0; 828 rr3->pktlen = 0; 829 rr3->pkttype = 0; 830 return ret; 831 } 832 833 /* callback function from USB when async USB request has completed */ 834 static void redrat3_handle_async(struct urb *urb, struct pt_regs *regs) 835 { 836 struct redrat3_dev *rr3; 837 838 if (!urb) 839 return; 840 841 rr3 = urb->context; 842 if (!rr3) { 843 pr_err("%s called with invalid context!\n", __func__); 844 usb_unlink_urb(urb); 845 return; 846 } 847 848 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 849 850 if (!rr3->det_enabled) { 851 rr3_dbg(rr3->dev, "received a read callback but detector " 852 "disabled - ignoring\n"); 853 return; 854 } 855 856 switch (urb->status) { 857 case 0: 858 redrat3_get_ir_data(rr3, urb->actual_length); 859 break; 860 861 case -ECONNRESET: 862 case -ENOENT: 863 case -ESHUTDOWN: 864 usb_unlink_urb(urb); 865 return; 866 867 case -EPIPE: 868 default: 869 dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status); 870 rr3->bytes_read = 0; 871 rr3->pktlen = 0; 872 rr3->pkttype = 0; 873 break; 874 } 875 876 if (!rr3->transmitting) 877 redrat3_issue_async(rr3); 878 else 879 rr3_dbg(rr3->dev, "IR transmit in progress\n"); 880 } 881 882 static void redrat3_write_bulk_callback(struct urb *urb, struct pt_regs *regs) 883 { 884 struct redrat3_dev *rr3; 885 int len; 886 887 if (!urb) 888 return; 889 890 rr3 = urb->context; 891 if (rr3) { 892 len = urb->actual_length; 893 rr3_ftr(rr3->dev, "%s: called (status=%d len=%d)\n", 894 __func__, urb->status, len); 895 } 896 } 897 898 static u16 mod_freq_to_val(unsigned int mod_freq) 899 { 900 int mult = 6000000; 901 902 /* Clk used in mod. freq. generation is CLK24/4. */ 903 return (u16)(65536 - (mult / mod_freq)); 904 } 905 906 static int redrat3_set_tx_carrier(struct rc_dev *dev, u32 carrier) 907 { 908 struct redrat3_dev *rr3 = dev->priv; 909 910 rr3->carrier = carrier; 911 912 return carrier; 913 } 914 915 static int redrat3_transmit_ir(struct rc_dev *rcdev, int *txbuf, u32 n) 916 { 917 struct redrat3_dev *rr3 = rcdev->priv; 918 struct device *dev = rr3->dev; 919 struct redrat3_signal_header header; 920 int i, j, count, ret, ret_len, offset; 921 int lencheck, cur_sample_len, pipe; 922 char *buffer = NULL, *sigdata = NULL; 923 int *sample_lens = NULL; 924 u32 tmpi; 925 u16 tmps; 926 u8 *datap; 927 u8 curlencheck = 0; 928 u16 *lengths_ptr; 929 int sendbuf_len; 930 931 rr3_ftr(dev, "Entering %s\n", __func__); 932 933 if (rr3->transmitting) { 934 dev_warn(dev, "%s: transmitter already in use\n", __func__); 935 return -EAGAIN; 936 } 937 938 count = n / sizeof(int); 939 if (count > (RR3_DRIVER_MAXLENS * 2)) 940 return -EINVAL; 941 942 rr3->transmitting = true; 943 944 redrat3_disable_detector(rr3); 945 946 if (rr3->det_enabled) { 947 dev_err(dev, "%s: cannot tx while rx is enabled\n", __func__); 948 ret = -EIO; 949 goto out; 950 } 951 952 sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL); 953 if (!sample_lens) { 954 ret = -ENOMEM; 955 goto out; 956 } 957 958 for (i = 0; i < count; i++) { 959 for (lencheck = 0; lencheck < curlencheck; lencheck++) { 960 cur_sample_len = redrat3_us_to_len(txbuf[i]); 961 if (sample_lens[lencheck] == cur_sample_len) 962 break; 963 } 964 if (lencheck == curlencheck) { 965 cur_sample_len = redrat3_us_to_len(txbuf[i]); 966 rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n", 967 i, txbuf[i], curlencheck, cur_sample_len); 968 if (curlencheck < 255) { 969 /* now convert the value to a proper 970 * rr3 value.. */ 971 sample_lens[curlencheck] = cur_sample_len; 972 curlencheck++; 973 } else { 974 dev_err(dev, "signal too long\n"); 975 ret = -EINVAL; 976 goto out; 977 } 978 } 979 } 980 981 sigdata = kzalloc((count + RR3_TX_TRAILER_LEN), GFP_KERNEL); 982 if (!sigdata) { 983 ret = -ENOMEM; 984 goto out; 985 } 986 987 sigdata[count] = RR3_END_OF_SIGNAL; 988 sigdata[count + 1] = RR3_END_OF_SIGNAL; 989 for (i = 0; i < count; i++) { 990 for (j = 0; j < curlencheck; j++) { 991 if (sample_lens[j] == redrat3_us_to_len(txbuf[i])) 992 sigdata[i] = j; 993 } 994 } 995 996 offset = RR3_TX_HEADER_OFFSET; 997 sendbuf_len = RR3_HEADER_LENGTH + (sizeof(u16) * RR3_DRIVER_MAXLENS) 998 + count + RR3_TX_TRAILER_LEN + offset; 999 1000 buffer = kzalloc(sendbuf_len, GFP_KERNEL); 1001 if (!buffer) { 1002 ret = -ENOMEM; 1003 goto out; 1004 } 1005 1006 /* fill in our packet header */ 1007 header.length = sendbuf_len - offset; 1008 header.transfer_type = RR3_MOD_SIGNAL_OUT; 1009 header.pause = redrat3_len_to_us(100); 1010 header.mod_freq_count = mod_freq_to_val(rr3->carrier); 1011 header.no_periods = 0; /* n/a to transmit */ 1012 header.max_lengths = RR3_DRIVER_MAXLENS; 1013 header.no_lengths = curlencheck; 1014 header.max_sig_size = RR3_MAX_SIG_SIZE; 1015 header.sig_size = count + RR3_TX_TRAILER_LEN; 1016 /* we currently rely on repeat handling in the IR encoding source */ 1017 header.no_repeats = 0; 1018 1019 tmps = cpu_to_be16(header.length); 1020 memcpy(buffer, &tmps, 2); 1021 1022 tmps = cpu_to_be16(header.transfer_type); 1023 memcpy(buffer + 2, &tmps, 2); 1024 1025 tmpi = cpu_to_be32(header.pause); 1026 memcpy(buffer + offset, &tmpi, sizeof(tmpi)); 1027 1028 tmps = cpu_to_be16(header.mod_freq_count); 1029 memcpy(buffer + offset + RR3_FREQ_COUNT_OFFSET, &tmps, 2); 1030 1031 buffer[offset + RR3_NUM_LENGTHS_OFFSET] = header.no_lengths; 1032 1033 tmps = cpu_to_be16(header.sig_size); 1034 memcpy(buffer + offset + RR3_NUM_SIGS_OFFSET, &tmps, 2); 1035 1036 buffer[offset + RR3_REPEATS_OFFSET] = header.no_repeats; 1037 1038 lengths_ptr = (u16 *)(buffer + offset + RR3_HEADER_LENGTH); 1039 for (i = 0; i < curlencheck; ++i) 1040 lengths_ptr[i] = cpu_to_be16(sample_lens[i]); 1041 1042 datap = (u8 *)(buffer + offset + RR3_HEADER_LENGTH + 1043 (sizeof(u16) * RR3_DRIVER_MAXLENS)); 1044 memcpy(datap, sigdata, (count + RR3_TX_TRAILER_LEN)); 1045 1046 if (debug) { 1047 redrat3_dump_signal_header(&header); 1048 redrat3_dump_signal_data(buffer, header.sig_size); 1049 } 1050 1051 pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress); 1052 tmps = usb_bulk_msg(rr3->udev, pipe, buffer, 1053 sendbuf_len, &ret_len, 10 * HZ); 1054 rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, tmps); 1055 1056 /* now tell the hardware to transmit what we sent it */ 1057 pipe = usb_rcvctrlpipe(rr3->udev, 0); 1058 ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL, 1059 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 1060 0, 0, buffer, 2, HZ * 10); 1061 1062 if (ret < 0) 1063 dev_err(dev, "Error: control msg send failed, rc %d\n", ret); 1064 else 1065 ret = n; 1066 1067 out: 1068 kfree(sample_lens); 1069 kfree(buffer); 1070 kfree(sigdata); 1071 1072 rr3->transmitting = false; 1073 1074 redrat3_enable_detector(rr3); 1075 1076 return ret; 1077 } 1078 1079 static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3) 1080 { 1081 struct device *dev = rr3->dev; 1082 struct rc_dev *rc; 1083 int ret = -ENODEV; 1084 u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct); 1085 1086 rc = rc_allocate_device(); 1087 if (!rc) { 1088 dev_err(dev, "remote input dev allocation failed\n"); 1089 goto out; 1090 } 1091 1092 snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s " 1093 "Infrared Remote Transceiver (%04x:%04x)", 1094 prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "", 1095 le16_to_cpu(rr3->udev->descriptor.idVendor), prod); 1096 1097 usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys)); 1098 1099 rc->input_name = rr3->name; 1100 rc->input_phys = rr3->phys; 1101 usb_to_input_id(rr3->udev, &rc->input_id); 1102 rc->dev.parent = dev; 1103 rc->priv = rr3; 1104 rc->driver_type = RC_DRIVER_IR_RAW; 1105 rc->allowed_protos = RC_TYPE_ALL; 1106 rc->timeout = US_TO_NS(2750); 1107 rc->tx_ir = redrat3_transmit_ir; 1108 rc->s_tx_carrier = redrat3_set_tx_carrier; 1109 rc->driver_name = DRIVER_NAME; 1110 rc->map_name = RC_MAP_HAUPPAUGE; 1111 1112 ret = rc_register_device(rc); 1113 if (ret < 0) { 1114 dev_err(dev, "remote dev registration failed\n"); 1115 goto out; 1116 } 1117 1118 return rc; 1119 1120 out: 1121 rc_free_device(rc); 1122 return NULL; 1123 } 1124 1125 static int __devinit redrat3_dev_probe(struct usb_interface *intf, 1126 const struct usb_device_id *id) 1127 { 1128 struct usb_device *udev = interface_to_usbdev(intf); 1129 struct device *dev = &intf->dev; 1130 struct usb_host_interface *uhi; 1131 struct redrat3_dev *rr3; 1132 struct usb_endpoint_descriptor *ep; 1133 struct usb_endpoint_descriptor *ep_in = NULL; 1134 struct usb_endpoint_descriptor *ep_out = NULL; 1135 u8 addr, attrs; 1136 int pipe, i; 1137 int retval = -ENOMEM; 1138 1139 rr3_ftr(dev, "%s called\n", __func__); 1140 1141 uhi = intf->cur_altsetting; 1142 1143 /* find our bulk-in and bulk-out endpoints */ 1144 for (i = 0; i < uhi->desc.bNumEndpoints; ++i) { 1145 ep = &uhi->endpoint[i].desc; 1146 addr = ep->bEndpointAddress; 1147 attrs = ep->bmAttributes; 1148 1149 if ((ep_in == NULL) && 1150 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && 1151 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == 1152 USB_ENDPOINT_XFER_BULK)) { 1153 rr3_dbg(dev, "found bulk-in endpoint at 0x%02x\n", 1154 ep->bEndpointAddress); 1155 /* data comes in on 0x82, 0x81 is for other data... */ 1156 if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR) 1157 ep_in = ep; 1158 } 1159 1160 if ((ep_out == NULL) && 1161 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && 1162 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == 1163 USB_ENDPOINT_XFER_BULK)) { 1164 rr3_dbg(dev, "found bulk-out endpoint at 0x%02x\n", 1165 ep->bEndpointAddress); 1166 ep_out = ep; 1167 } 1168 } 1169 1170 if (!ep_in || !ep_out) { 1171 dev_err(dev, "Couldn't find both in and out endpoints\n"); 1172 retval = -ENODEV; 1173 goto no_endpoints; 1174 } 1175 1176 /* allocate memory for our device state and initialize it */ 1177 rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL); 1178 if (rr3 == NULL) { 1179 dev_err(dev, "Memory allocation failure\n"); 1180 goto no_endpoints; 1181 } 1182 1183 rr3->dev = &intf->dev; 1184 1185 /* set up bulk-in endpoint */ 1186 rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL); 1187 if (!rr3->read_urb) { 1188 dev_err(dev, "Read urb allocation failure\n"); 1189 goto error; 1190 } 1191 1192 rr3->ep_in = ep_in; 1193 rr3->bulk_in_buf = usb_alloc_coherent(udev, ep_in->wMaxPacketSize, 1194 GFP_ATOMIC, &rr3->dma_in); 1195 if (!rr3->bulk_in_buf) { 1196 dev_err(dev, "Read buffer allocation failure\n"); 1197 goto error; 1198 } 1199 1200 pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress); 1201 usb_fill_bulk_urb(rr3->read_urb, udev, pipe, 1202 rr3->bulk_in_buf, ep_in->wMaxPacketSize, 1203 (usb_complete_t)redrat3_handle_async, rr3); 1204 1205 /* set up bulk-out endpoint*/ 1206 rr3->write_urb = usb_alloc_urb(0, GFP_KERNEL); 1207 if (!rr3->write_urb) { 1208 dev_err(dev, "Write urb allocation failure\n"); 1209 goto error; 1210 } 1211 1212 rr3->ep_out = ep_out; 1213 rr3->bulk_out_buf = usb_alloc_coherent(udev, ep_out->wMaxPacketSize, 1214 GFP_ATOMIC, &rr3->dma_out); 1215 if (!rr3->bulk_out_buf) { 1216 dev_err(dev, "Write buffer allocation failure\n"); 1217 goto error; 1218 } 1219 1220 pipe = usb_sndbulkpipe(udev, ep_out->bEndpointAddress); 1221 usb_fill_bulk_urb(rr3->write_urb, udev, pipe, 1222 rr3->bulk_out_buf, ep_out->wMaxPacketSize, 1223 (usb_complete_t)redrat3_write_bulk_callback, rr3); 1224 1225 mutex_init(&rr3->lock); 1226 rr3->udev = udev; 1227 1228 redrat3_reset(rr3); 1229 redrat3_get_firmware_rev(rr3); 1230 1231 /* might be all we need to do? */ 1232 retval = redrat3_enable_detector(rr3); 1233 if (retval < 0) 1234 goto error; 1235 1236 /* store current hardware timeout, in us, will use for kfifo resets */ 1237 rr3->hw_timeout = redrat3_get_timeout(rr3); 1238 1239 /* default.. will get overridden by any sends with a freq defined */ 1240 rr3->carrier = 38000; 1241 1242 rr3->rc = redrat3_init_rc_dev(rr3); 1243 if (!rr3->rc) 1244 goto error; 1245 1246 setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3); 1247 1248 /* we can register the device now, as it is ready */ 1249 usb_set_intfdata(intf, rr3); 1250 1251 rr3_ftr(dev, "Exiting %s\n", __func__); 1252 return 0; 1253 1254 error: 1255 redrat3_delete(rr3, rr3->udev); 1256 1257 no_endpoints: 1258 dev_err(dev, "%s: retval = %x", __func__, retval); 1259 1260 return retval; 1261 } 1262 1263 static void __devexit redrat3_dev_disconnect(struct usb_interface *intf) 1264 { 1265 struct usb_device *udev = interface_to_usbdev(intf); 1266 struct redrat3_dev *rr3 = usb_get_intfdata(intf); 1267 1268 rr3_ftr(&intf->dev, "Entering %s\n", __func__); 1269 1270 if (!rr3) 1271 return; 1272 1273 redrat3_disable_detector(rr3); 1274 1275 usb_set_intfdata(intf, NULL); 1276 rc_unregister_device(rr3->rc); 1277 del_timer_sync(&rr3->rx_timeout); 1278 redrat3_delete(rr3, udev); 1279 1280 rr3_ftr(&intf->dev, "RedRat3 IR Transceiver now disconnected\n"); 1281 } 1282 1283 static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message) 1284 { 1285 struct redrat3_dev *rr3 = usb_get_intfdata(intf); 1286 rr3_ftr(rr3->dev, "suspend\n"); 1287 usb_kill_urb(rr3->read_urb); 1288 return 0; 1289 } 1290 1291 static int redrat3_dev_resume(struct usb_interface *intf) 1292 { 1293 struct redrat3_dev *rr3 = usb_get_intfdata(intf); 1294 rr3_ftr(rr3->dev, "resume\n"); 1295 if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC)) 1296 return -EIO; 1297 return 0; 1298 } 1299 1300 static struct usb_driver redrat3_dev_driver = { 1301 .name = DRIVER_NAME, 1302 .probe = redrat3_dev_probe, 1303 .disconnect = redrat3_dev_disconnect, 1304 .suspend = redrat3_dev_suspend, 1305 .resume = redrat3_dev_resume, 1306 .reset_resume = redrat3_dev_resume, 1307 .id_table = redrat3_dev_table 1308 }; 1309 1310 static int __init redrat3_dev_init(void) 1311 { 1312 int ret; 1313 1314 ret = usb_register(&redrat3_dev_driver); 1315 if (ret < 0) 1316 pr_err(DRIVER_NAME 1317 ": usb register failed, result = %d\n", ret); 1318 1319 return ret; 1320 } 1321 1322 static void __exit redrat3_dev_exit(void) 1323 { 1324 usb_deregister(&redrat3_dev_driver); 1325 } 1326 1327 module_init(redrat3_dev_init); 1328 module_exit(redrat3_dev_exit); 1329 1330 MODULE_DESCRIPTION(DRIVER_DESC); 1331 MODULE_AUTHOR(DRIVER_AUTHOR); 1332 MODULE_AUTHOR(DRIVER_AUTHOR2); 1333 MODULE_LICENSE("GPL"); 1334 MODULE_DEVICE_TABLE(usb, redrat3_dev_table); 1335 1336 module_param(debug, int, S_IRUGO | S_IWUSR); 1337 MODULE_PARM_DESC(debug, "Enable module debug spew. 0 = no debugging (default) " 1338 "0x1 = standard debug messages, 0x2 = function tracing debug. " 1339 "Flag bits are addative (i.e., 0x3 for both debug types)."); 1340