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