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; 208 209 /* Is the device currently receiving? */ 210 bool recv_in_progress; 211 /* is the detector enabled*/ 212 bool det_enabled; 213 /* Is the device currently transmitting?*/ 214 bool transmitting; 215 216 /* store for current packet */ 217 char pbuf[RR3_MAX_BUF_SIZE]; 218 u16 pktlen; 219 u16 pkttype; 220 u16 bytes_read; 221 /* indicate whether we are going to reprocess 222 * the USB callback with a bigger buffer */ 223 int buftoosmall; 224 char *datap; 225 226 u32 carrier; 227 228 char name[128]; 229 char phys[64]; 230 }; 231 232 /* All incoming data buffers adhere to a very specific data format */ 233 struct redrat3_signal_header { 234 u16 length; /* Length of data being transferred */ 235 u16 transfer_type; /* Type of data transferred */ 236 u32 pause; /* Pause between main and repeat signals */ 237 u16 mod_freq_count; /* Value of timer on mod. freq. measurement */ 238 u16 no_periods; /* No. of periods over which mod. freq. is measured */ 239 u8 max_lengths; /* Max no. of lengths (i.e. size of array) */ 240 u8 no_lengths; /* Actual no. of elements in lengths array */ 241 u16 max_sig_size; /* Max no. of values in signal data array */ 242 u16 sig_size; /* Acuto no. of values in signal data array */ 243 u8 no_repeats; /* No. of repeats of repeat signal section */ 244 /* Here forward is the lengths and signal data */ 245 }; 246 247 static void redrat3_dump_signal_header(struct redrat3_signal_header *header) 248 { 249 pr_info("%s:\n", __func__); 250 pr_info(" * length: %u, transfer_type: 0x%02x\n", 251 header->length, header->transfer_type); 252 pr_info(" * pause: %u, freq_count: %u, no_periods: %u\n", 253 header->pause, header->mod_freq_count, header->no_periods); 254 pr_info(" * lengths: %u (max: %u)\n", 255 header->no_lengths, header->max_lengths); 256 pr_info(" * sig_size: %u (max: %u)\n", 257 header->sig_size, header->max_sig_size); 258 pr_info(" * repeats: %u\n", header->no_repeats); 259 } 260 261 static void redrat3_dump_signal_data(char *buffer, u16 len) 262 { 263 int offset, i; 264 char *data_vals; 265 266 pr_info("%s:", __func__); 267 268 offset = RR3_TX_HEADER_OFFSET + RR3_HEADER_LENGTH 269 + (RR3_DRIVER_MAXLENS * sizeof(u16)); 270 271 /* read RR3_DRIVER_MAXLENS from ctrl msg */ 272 data_vals = buffer + offset; 273 274 for (i = 0; i < len; i++) { 275 if (i % 10 == 0) 276 pr_cont("\n * "); 277 pr_cont("%02x ", *data_vals++); 278 } 279 280 pr_cont("\n"); 281 } 282 283 /* 284 * redrat3_issue_async 285 * 286 * Issues an async read to the ir data in port.. 287 * sets the callback to be redrat3_handle_async 288 */ 289 static void redrat3_issue_async(struct redrat3_dev *rr3) 290 { 291 int res; 292 293 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 294 295 if (!rr3->det_enabled) { 296 dev_warn(rr3->dev, "not issuing async read, " 297 "detector not enabled\n"); 298 return; 299 } 300 301 memset(rr3->bulk_in_buf, 0, rr3->ep_in->wMaxPacketSize); 302 res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC); 303 if (res) 304 rr3_dbg(rr3->dev, "%s: receive request FAILED! " 305 "(res %d, len %d)\n", __func__, res, 306 rr3->read_urb->transfer_buffer_length); 307 } 308 309 static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code) 310 { 311 if (!rr3->transmitting && (code != 0x40)) 312 dev_info(rr3->dev, "fw error code 0x%02x: ", code); 313 314 switch (code) { 315 case 0x00: 316 pr_cont("No Error\n"); 317 break; 318 319 /* Codes 0x20 through 0x2f are IR Firmware Errors */ 320 case 0x20: 321 pr_cont("Initial signal pulse not long enough " 322 "to measure carrier frequency\n"); 323 break; 324 case 0x21: 325 pr_cont("Not enough length values allocated for signal\n"); 326 break; 327 case 0x22: 328 pr_cont("Not enough memory allocated for signal data\n"); 329 break; 330 case 0x23: 331 pr_cont("Too many signal repeats\n"); 332 break; 333 case 0x28: 334 pr_cont("Insufficient memory available for IR signal " 335 "data memory allocation\n"); 336 break; 337 case 0x29: 338 pr_cont("Insufficient memory available " 339 "for IrDa signal data memory allocation\n"); 340 break; 341 342 /* Codes 0x30 through 0x3f are USB Firmware Errors */ 343 case 0x30: 344 pr_cont("Insufficient memory available for bulk " 345 "transfer structure\n"); 346 break; 347 348 /* 349 * Other error codes... These are primarily errors that can occur in 350 * the control messages sent to the redrat 351 */ 352 case 0x40: 353 if (!rr3->transmitting) 354 pr_cont("Signal capture has been terminated\n"); 355 break; 356 case 0x41: 357 pr_cont("Attempt to set/get and unknown signal I/O " 358 "algorithm parameter\n"); 359 break; 360 case 0x42: 361 pr_cont("Signal capture already started\n"); 362 break; 363 364 default: 365 pr_cont("Unknown Error\n"); 366 break; 367 } 368 } 369 370 static u32 redrat3_val_to_mod_freq(struct redrat3_signal_header *ph) 371 { 372 u32 mod_freq = 0; 373 374 if (ph->mod_freq_count != 0) 375 mod_freq = (RR3_CLK * ph->no_periods) / 376 (ph->mod_freq_count * RR3_CLK_PER_COUNT); 377 378 return mod_freq; 379 } 380 381 /* this function scales down the figures for the same result... */ 382 static u32 redrat3_len_to_us(u32 length) 383 { 384 u32 biglen = length * 1000; 385 u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000; 386 u32 result = (u32) (biglen / divisor); 387 388 /* don't allow zero lengths to go back, breaks lirc */ 389 return result ? result : 1; 390 } 391 392 /* 393 * convert us back into redrat3 lengths 394 * 395 * length * 1000 length * 1000000 396 * ------------- = ---------------- = micro 397 * rr3clk / 1000 rr3clk 398 399 * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000 400 * ----- = 4 ----- = 6 -------------- = len --------------------- 401 * 3 2 1000000 1000 402 */ 403 static u32 redrat3_us_to_len(u32 microsec) 404 { 405 u32 result; 406 u32 divisor; 407 408 microsec &= IR_MAX_DURATION; 409 divisor = (RR3_CLK_CONV_FACTOR / 1000); 410 result = (u32)(microsec * divisor) / 1000; 411 412 /* don't allow zero lengths to go back, breaks lirc */ 413 return result ? result : 1; 414 415 } 416 417 /* timer callback to send long trailing space on receive timeout */ 418 static void redrat3_rx_timeout(unsigned long data) 419 { 420 struct redrat3_dev *rr3 = (struct redrat3_dev *)data; 421 DEFINE_IR_RAW_EVENT(rawir); 422 423 rawir.pulse = false; 424 rawir.duration = rr3->rc->timeout; 425 rr3_dbg(rr3->dev, "storing trailing space with duration %d\n", 426 rawir.duration); 427 ir_raw_event_store_with_filter(rr3->rc, &rawir); 428 429 rr3_dbg(rr3->dev, "calling ir_raw_event_handle\n"); 430 ir_raw_event_handle(rr3->rc); 431 432 rr3_dbg(rr3->dev, "calling ir_raw_event_reset\n"); 433 ir_raw_event_reset(rr3->rc); 434 } 435 436 static void redrat3_process_ir_data(struct redrat3_dev *rr3) 437 { 438 DEFINE_IR_RAW_EVENT(rawir); 439 struct redrat3_signal_header header; 440 struct device *dev; 441 int i; 442 unsigned long delay; 443 u32 mod_freq, single_len; 444 u16 *len_vals; 445 u8 *data_vals; 446 u32 tmp32; 447 u16 tmp16; 448 char *sig_data; 449 450 if (!rr3) { 451 pr_err("%s called with no context!\n", __func__); 452 return; 453 } 454 455 rr3_ftr(rr3->dev, "Entered %s\n", __func__); 456 457 dev = rr3->dev; 458 sig_data = rr3->pbuf; 459 460 header.length = rr3->pktlen; 461 header.transfer_type = rr3->pkttype; 462 463 /* Sanity check */ 464 if (!(header.length >= RR3_HEADER_LENGTH)) 465 dev_warn(dev, "read returned less than rr3 header len\n"); 466 467 delay = usecs_to_jiffies(rr3->rc->timeout / 1000); 468 mod_timer(&rr3->rx_timeout, jiffies + delay); 469 470 memcpy(&tmp32, sig_data + RR3_PAUSE_OFFSET, sizeof(tmp32)); 471 header.pause = be32_to_cpu(tmp32); 472 473 memcpy(&tmp16, sig_data + RR3_FREQ_COUNT_OFFSET, sizeof(tmp16)); 474 header.mod_freq_count = be16_to_cpu(tmp16); 475 476 memcpy(&tmp16, sig_data + RR3_NUM_PERIOD_OFFSET, sizeof(tmp16)); 477 header.no_periods = be16_to_cpu(tmp16); 478 479 header.max_lengths = sig_data[RR3_MAX_LENGTHS_OFFSET]; 480 header.no_lengths = sig_data[RR3_NUM_LENGTHS_OFFSET]; 481 482 memcpy(&tmp16, sig_data + RR3_MAX_SIGS_OFFSET, sizeof(tmp16)); 483 header.max_sig_size = be16_to_cpu(tmp16); 484 485 memcpy(&tmp16, sig_data + RR3_NUM_SIGS_OFFSET, sizeof(tmp16)); 486 header.sig_size = be16_to_cpu(tmp16); 487 488 header.no_repeats= sig_data[RR3_REPEATS_OFFSET]; 489 490 if (debug) { 491 redrat3_dump_signal_header(&header); 492 redrat3_dump_signal_data(sig_data, header.sig_size); 493 } 494 495 mod_freq = redrat3_val_to_mod_freq(&header); 496 rr3_dbg(dev, "Got mod_freq of %u\n", mod_freq); 497 498 /* Here we pull out the 'length' values from the signal */ 499 len_vals = (u16 *)(sig_data + RR3_HEADER_LENGTH); 500 501 data_vals = sig_data + RR3_HEADER_LENGTH + 502 (header.max_lengths * sizeof(u16)); 503 504 /* process each rr3 encoded byte into an int */ 505 for (i = 0; i < header.sig_size; i++) { 506 u16 val = len_vals[data_vals[i]]; 507 single_len = redrat3_len_to_us((u32)be16_to_cpu(val)); 508 509 /* cap the value to IR_MAX_DURATION */ 510 single_len &= IR_MAX_DURATION; 511 512 /* we should always get pulse/space/pulse/space samples */ 513 if (i % 2) 514 rawir.pulse = false; 515 else 516 rawir.pulse = true; 517 518 rawir.duration = US_TO_NS(single_len); 519 rr3_dbg(dev, "storing %s with duration %d (i: %d)\n", 520 rawir.pulse ? "pulse" : "space", rawir.duration, i); 521 ir_raw_event_store_with_filter(rr3->rc, &rawir); 522 } 523 524 /* add a trailing space, if need be */ 525 if (i % 2) { 526 rawir.pulse = false; 527 /* this duration is made up, and may not be ideal... */ 528 rawir.duration = rr3->rc->timeout / 2; 529 rr3_dbg(dev, "storing trailing space with duration %d\n", 530 rawir.duration); 531 ir_raw_event_store_with_filter(rr3->rc, &rawir); 532 } 533 534 rr3_dbg(dev, "calling ir_raw_event_handle\n"); 535 ir_raw_event_handle(rr3->rc); 536 537 return; 538 } 539 540 /* Util fn to send rr3 cmds */ 541 static u8 redrat3_send_cmd(int cmd, struct redrat3_dev *rr3) 542 { 543 struct usb_device *udev; 544 u8 *data; 545 int res; 546 547 data = kzalloc(sizeof(u8), GFP_KERNEL); 548 if (!data) 549 return -ENOMEM; 550 551 udev = rr3->udev; 552 res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd, 553 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 554 0x0000, 0x0000, data, sizeof(u8), HZ * 10); 555 556 if (res < 0) { 557 dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d", 558 __func__, res, *data); 559 res = -EIO; 560 } else 561 res = (u8)data[0]; 562 563 kfree(data); 564 565 return res; 566 } 567 568 /* Enables the long range detector and starts async receive */ 569 static int redrat3_enable_detector(struct redrat3_dev *rr3) 570 { 571 struct device *dev = rr3->dev; 572 u8 ret; 573 574 rr3_ftr(dev, "Entering %s\n", __func__); 575 576 ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3); 577 if (ret != 0) 578 dev_dbg(dev, "%s: unexpected ret of %d\n", 579 __func__, ret); 580 581 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); 582 if (ret != 1) { 583 dev_err(dev, "%s: detector status: %d, should be 1\n", 584 __func__, ret); 585 return -EIO; 586 } 587 588 rr3->det_enabled = true; 589 redrat3_issue_async(rr3); 590 591 return 0; 592 } 593 594 /* Disables the rr3 long range detector */ 595 static void redrat3_disable_detector(struct redrat3_dev *rr3) 596 { 597 struct device *dev = rr3->dev; 598 u8 ret; 599 600 rr3_ftr(dev, "Entering %s\n", __func__); 601 602 ret = redrat3_send_cmd(RR3_RC_DET_DISABLE, rr3); 603 if (ret != 0) 604 dev_err(dev, "%s: failure!\n", __func__); 605 606 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); 607 if (ret != 0) 608 dev_warn(dev, "%s: detector status: %d, should be 0\n", 609 __func__, ret); 610 611 rr3->det_enabled = false; 612 } 613 614 static inline void redrat3_delete(struct redrat3_dev *rr3, 615 struct usb_device *udev) 616 { 617 rr3_ftr(rr3->dev, "%s cleaning up\n", __func__); 618 usb_kill_urb(rr3->read_urb); 619 usb_kill_urb(rr3->write_urb); 620 621 usb_free_urb(rr3->read_urb); 622 usb_free_urb(rr3->write_urb); 623 624 usb_free_coherent(udev, rr3->ep_in->wMaxPacketSize, 625 rr3->bulk_in_buf, rr3->dma_in); 626 usb_free_coherent(udev, rr3->ep_out->wMaxPacketSize, 627 rr3->bulk_out_buf, rr3->dma_out); 628 629 kfree(rr3); 630 } 631 632 static u32 redrat3_get_timeout(struct device *dev, 633 struct rc_dev *rc, struct usb_device *udev) 634 { 635 u32 *tmp; 636 u32 timeout = MS_TO_NS(150); /* a sane default, if things go haywire */ 637 int len, ret, pipe; 638 639 len = sizeof(*tmp); 640 tmp = kzalloc(len, GFP_KERNEL); 641 if (!tmp) { 642 dev_warn(dev, "Memory allocation faillure\n"); 643 return timeout; 644 } 645 646 pipe = usb_rcvctrlpipe(udev, 0); 647 ret = usb_control_msg(udev, pipe, RR3_GET_IR_PARAM, 648 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 649 RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5); 650 if (ret != len) { 651 dev_warn(dev, "Failed to read timeout from hardware\n"); 652 return timeout; 653 } 654 655 timeout = US_TO_NS(redrat3_len_to_us(be32_to_cpu(*tmp))); 656 if (timeout < rc->min_timeout) 657 timeout = rc->min_timeout; 658 else if (timeout > rc->max_timeout) 659 timeout = rc->max_timeout; 660 661 rr3_dbg(dev, "Got timeout of %d ms\n", timeout / (1000 * 1000)); 662 return timeout; 663 } 664 665 static void redrat3_reset(struct redrat3_dev *rr3) 666 { 667 struct usb_device *udev = rr3->udev; 668 struct device *dev = rr3->dev; 669 int rc, rxpipe, txpipe; 670 u8 *val; 671 int len = sizeof(u8); 672 673 rr3_ftr(dev, "Entering %s\n", __func__); 674 675 rxpipe = usb_rcvctrlpipe(udev, 0); 676 txpipe = usb_sndctrlpipe(udev, 0); 677 678 val = kzalloc(len, GFP_KERNEL); 679 if (!val) { 680 dev_err(dev, "Memory allocation failure\n"); 681 return; 682 } 683 684 *val = 0x01; 685 rc = usb_control_msg(udev, rxpipe, RR3_RESET, 686 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 687 RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25); 688 rr3_dbg(dev, "reset returned 0x%02x\n", rc); 689 690 *val = 5; 691 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, 692 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 693 RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25); 694 rr3_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc); 695 696 *val = RR3_DRIVER_MAXLENS; 697 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, 698 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 699 RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25); 700 rr3_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc); 701 702 kfree(val); 703 } 704 705 static void redrat3_get_firmware_rev(struct redrat3_dev *rr3) 706 { 707 int rc = 0; 708 char *buffer; 709 710 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 711 712 buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL); 713 if (!buffer) { 714 dev_err(rr3->dev, "Memory allocation failure\n"); 715 return; 716 } 717 718 rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0), 719 RR3_FW_VERSION, 720 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 721 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5); 722 723 if (rc >= 0) 724 dev_info(rr3->dev, "Firmware rev: %s", buffer); 725 else 726 dev_err(rr3->dev, "Problem fetching firmware ID\n"); 727 728 kfree(buffer); 729 rr3_ftr(rr3->dev, "Exiting %s\n", __func__); 730 } 731 732 static void redrat3_read_packet_start(struct redrat3_dev *rr3, int len) 733 { 734 u16 tx_error; 735 u16 hdrlen; 736 737 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 738 739 /* grab the Length and type of transfer */ 740 memcpy(&(rr3->pktlen), (unsigned char *) rr3->bulk_in_buf, 741 sizeof(rr3->pktlen)); 742 memcpy(&(rr3->pkttype), ((unsigned char *) rr3->bulk_in_buf + 743 sizeof(rr3->pktlen)), 744 sizeof(rr3->pkttype)); 745 746 /*data needs conversion to know what its real values are*/ 747 rr3->pktlen = be16_to_cpu(rr3->pktlen); 748 rr3->pkttype = be16_to_cpu(rr3->pkttype); 749 750 switch (rr3->pkttype) { 751 case RR3_ERROR: 752 memcpy(&tx_error, ((unsigned char *)rr3->bulk_in_buf 753 + (sizeof(rr3->pktlen) + sizeof(rr3->pkttype))), 754 sizeof(tx_error)); 755 tx_error = be16_to_cpu(tx_error); 756 redrat3_dump_fw_error(rr3, tx_error); 757 break; 758 759 case RR3_MOD_SIGNAL_IN: 760 hdrlen = sizeof(rr3->pktlen) + sizeof(rr3->pkttype); 761 rr3->bytes_read = len; 762 rr3->bytes_read -= hdrlen; 763 rr3->datap = &(rr3->pbuf[0]); 764 765 memcpy(rr3->datap, ((unsigned char *)rr3->bulk_in_buf + hdrlen), 766 rr3->bytes_read); 767 rr3->datap += rr3->bytes_read; 768 rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", 769 rr3->bytes_read, rr3->pktlen); 770 break; 771 772 default: 773 rr3_dbg(rr3->dev, "ignoring packet with type 0x%02x, " 774 "len of %d, 0x%02x\n", rr3->pkttype, len, rr3->pktlen); 775 break; 776 } 777 } 778 779 static void redrat3_read_packet_continue(struct redrat3_dev *rr3, int len) 780 { 781 782 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 783 784 memcpy(rr3->datap, (unsigned char *)rr3->bulk_in_buf, len); 785 rr3->datap += len; 786 787 rr3->bytes_read += len; 788 rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", 789 rr3->bytes_read, rr3->pktlen); 790 } 791 792 /* gather IR data from incoming urb, process it when we have enough */ 793 static int redrat3_get_ir_data(struct redrat3_dev *rr3, int len) 794 { 795 struct device *dev = rr3->dev; 796 int ret = 0; 797 798 rr3_ftr(dev, "Entering %s\n", __func__); 799 800 if (rr3->pktlen > RR3_MAX_BUF_SIZE) { 801 dev_err(rr3->dev, "error: packet larger than buffer\n"); 802 ret = -EINVAL; 803 goto out; 804 } 805 806 if ((rr3->bytes_read == 0) && 807 (len >= (sizeof(rr3->pkttype) + sizeof(rr3->pktlen)))) { 808 redrat3_read_packet_start(rr3, len); 809 } else if (rr3->bytes_read != 0) { 810 redrat3_read_packet_continue(rr3, len); 811 } else if (rr3->bytes_read == 0) { 812 dev_err(dev, "error: no packet data read\n"); 813 ret = -ENODATA; 814 goto out; 815 } 816 817 if (rr3->bytes_read > rr3->pktlen) { 818 dev_err(dev, "bytes_read (%d) greater than pktlen (%d)\n", 819 rr3->bytes_read, rr3->pktlen); 820 ret = -EINVAL; 821 goto out; 822 } else if (rr3->bytes_read < rr3->pktlen) 823 /* we're still accumulating data */ 824 return 0; 825 826 /* if we get here, we've got IR data to decode */ 827 if (rr3->pkttype == RR3_MOD_SIGNAL_IN) 828 redrat3_process_ir_data(rr3); 829 else 830 rr3_dbg(dev, "discarding non-signal data packet " 831 "(type 0x%02x)\n", rr3->pkttype); 832 833 out: 834 rr3->bytes_read = 0; 835 rr3->pktlen = 0; 836 rr3->pkttype = 0; 837 return ret; 838 } 839 840 /* callback function from USB when async USB request has completed */ 841 static void redrat3_handle_async(struct urb *urb, struct pt_regs *regs) 842 { 843 struct redrat3_dev *rr3; 844 845 if (!urb) 846 return; 847 848 rr3 = urb->context; 849 if (!rr3) { 850 pr_err("%s called with invalid context!\n", __func__); 851 usb_unlink_urb(urb); 852 return; 853 } 854 855 rr3_ftr(rr3->dev, "Entering %s\n", __func__); 856 857 if (!rr3->det_enabled) { 858 rr3_dbg(rr3->dev, "received a read callback but detector " 859 "disabled - ignoring\n"); 860 return; 861 } 862 863 switch (urb->status) { 864 case 0: 865 redrat3_get_ir_data(rr3, urb->actual_length); 866 break; 867 868 case -ECONNRESET: 869 case -ENOENT: 870 case -ESHUTDOWN: 871 usb_unlink_urb(urb); 872 return; 873 874 case -EPIPE: 875 default: 876 dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status); 877 rr3->bytes_read = 0; 878 rr3->pktlen = 0; 879 rr3->pkttype = 0; 880 break; 881 } 882 883 if (!rr3->transmitting) 884 redrat3_issue_async(rr3); 885 else 886 rr3_dbg(rr3->dev, "IR transmit in progress\n"); 887 } 888 889 static void redrat3_write_bulk_callback(struct urb *urb, struct pt_regs *regs) 890 { 891 struct redrat3_dev *rr3; 892 int len; 893 894 if (!urb) 895 return; 896 897 rr3 = urb->context; 898 if (rr3) { 899 len = urb->actual_length; 900 rr3_ftr(rr3->dev, "%s: called (status=%d len=%d)\n", 901 __func__, urb->status, len); 902 } 903 } 904 905 static u16 mod_freq_to_val(unsigned int mod_freq) 906 { 907 int mult = 6000000; 908 909 /* Clk used in mod. freq. generation is CLK24/4. */ 910 return (u16)(65536 - (mult / mod_freq)); 911 } 912 913 static int redrat3_set_tx_carrier(struct rc_dev *dev, u32 carrier) 914 { 915 struct redrat3_dev *rr3 = dev->priv; 916 917 rr3->carrier = carrier; 918 919 return carrier; 920 } 921 922 static int redrat3_transmit_ir(struct rc_dev *rcdev, int *txbuf, u32 n) 923 { 924 struct redrat3_dev *rr3 = rcdev->priv; 925 struct device *dev = rr3->dev; 926 struct redrat3_signal_header header; 927 int i, j, count, ret, ret_len, offset; 928 int lencheck, cur_sample_len, pipe; 929 char *buffer = NULL, *sigdata = NULL; 930 int *sample_lens = NULL; 931 u32 tmpi; 932 u16 tmps; 933 u8 *datap; 934 u8 curlencheck = 0; 935 u16 *lengths_ptr; 936 int sendbuf_len; 937 938 rr3_ftr(dev, "Entering %s\n", __func__); 939 940 if (rr3->transmitting) { 941 dev_warn(dev, "%s: transmitter already in use\n", __func__); 942 return -EAGAIN; 943 } 944 945 count = n / sizeof(int); 946 if (count > (RR3_DRIVER_MAXLENS * 2)) 947 return -EINVAL; 948 949 rr3->transmitting = true; 950 951 redrat3_disable_detector(rr3); 952 953 if (rr3->det_enabled) { 954 dev_err(dev, "%s: cannot tx while rx is enabled\n", __func__); 955 ret = -EIO; 956 goto out; 957 } 958 959 sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL); 960 if (!sample_lens) { 961 ret = -ENOMEM; 962 goto out; 963 } 964 965 for (i = 0; i < count; i++) { 966 for (lencheck = 0; lencheck < curlencheck; lencheck++) { 967 cur_sample_len = redrat3_us_to_len(txbuf[i]); 968 if (sample_lens[lencheck] == cur_sample_len) 969 break; 970 } 971 if (lencheck == curlencheck) { 972 cur_sample_len = redrat3_us_to_len(txbuf[i]); 973 rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n", 974 i, txbuf[i], curlencheck, cur_sample_len); 975 if (curlencheck < 255) { 976 /* now convert the value to a proper 977 * rr3 value.. */ 978 sample_lens[curlencheck] = cur_sample_len; 979 curlencheck++; 980 } else { 981 dev_err(dev, "signal too long\n"); 982 ret = -EINVAL; 983 goto out; 984 } 985 } 986 } 987 988 sigdata = kzalloc((count + RR3_TX_TRAILER_LEN), GFP_KERNEL); 989 if (!sigdata) { 990 ret = -ENOMEM; 991 goto out; 992 } 993 994 sigdata[count] = RR3_END_OF_SIGNAL; 995 sigdata[count + 1] = RR3_END_OF_SIGNAL; 996 for (i = 0; i < count; i++) { 997 for (j = 0; j < curlencheck; j++) { 998 if (sample_lens[j] == redrat3_us_to_len(txbuf[i])) 999 sigdata[i] = j; 1000 } 1001 } 1002 1003 offset = RR3_TX_HEADER_OFFSET; 1004 sendbuf_len = RR3_HEADER_LENGTH + (sizeof(u16) * RR3_DRIVER_MAXLENS) 1005 + count + RR3_TX_TRAILER_LEN + offset; 1006 1007 buffer = kzalloc(sendbuf_len, GFP_KERNEL); 1008 if (!buffer) { 1009 ret = -ENOMEM; 1010 goto out; 1011 } 1012 1013 /* fill in our packet header */ 1014 header.length = sendbuf_len - offset; 1015 header.transfer_type = RR3_MOD_SIGNAL_OUT; 1016 header.pause = redrat3_len_to_us(100); 1017 header.mod_freq_count = mod_freq_to_val(rr3->carrier); 1018 header.no_periods = 0; /* n/a to transmit */ 1019 header.max_lengths = RR3_DRIVER_MAXLENS; 1020 header.no_lengths = curlencheck; 1021 header.max_sig_size = RR3_MAX_SIG_SIZE; 1022 header.sig_size = count + RR3_TX_TRAILER_LEN; 1023 /* we currently rely on repeat handling in the IR encoding source */ 1024 header.no_repeats = 0; 1025 1026 tmps = cpu_to_be16(header.length); 1027 memcpy(buffer, &tmps, 2); 1028 1029 tmps = cpu_to_be16(header.transfer_type); 1030 memcpy(buffer + 2, &tmps, 2); 1031 1032 tmpi = cpu_to_be32(header.pause); 1033 memcpy(buffer + offset, &tmpi, sizeof(tmpi)); 1034 1035 tmps = cpu_to_be16(header.mod_freq_count); 1036 memcpy(buffer + offset + RR3_FREQ_COUNT_OFFSET, &tmps, 2); 1037 1038 buffer[offset + RR3_NUM_LENGTHS_OFFSET] = header.no_lengths; 1039 1040 tmps = cpu_to_be16(header.sig_size); 1041 memcpy(buffer + offset + RR3_NUM_SIGS_OFFSET, &tmps, 2); 1042 1043 buffer[offset + RR3_REPEATS_OFFSET] = header.no_repeats; 1044 1045 lengths_ptr = (u16 *)(buffer + offset + RR3_HEADER_LENGTH); 1046 for (i = 0; i < curlencheck; ++i) 1047 lengths_ptr[i] = cpu_to_be16(sample_lens[i]); 1048 1049 datap = (u8 *)(buffer + offset + RR3_HEADER_LENGTH + 1050 (sizeof(u16) * RR3_DRIVER_MAXLENS)); 1051 memcpy(datap, sigdata, (count + RR3_TX_TRAILER_LEN)); 1052 1053 if (debug) { 1054 redrat3_dump_signal_header(&header); 1055 redrat3_dump_signal_data(buffer, header.sig_size); 1056 } 1057 1058 pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress); 1059 tmps = usb_bulk_msg(rr3->udev, pipe, buffer, 1060 sendbuf_len, &ret_len, 10 * HZ); 1061 rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, tmps); 1062 1063 /* now tell the hardware to transmit what we sent it */ 1064 pipe = usb_rcvctrlpipe(rr3->udev, 0); 1065 ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL, 1066 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 1067 0, 0, buffer, 2, HZ * 10); 1068 1069 if (ret < 0) 1070 dev_err(dev, "Error: control msg send failed, rc %d\n", ret); 1071 else 1072 ret = n; 1073 1074 out: 1075 kfree(sample_lens); 1076 kfree(buffer); 1077 kfree(sigdata); 1078 1079 rr3->transmitting = false; 1080 1081 redrat3_enable_detector(rr3); 1082 1083 return ret; 1084 } 1085 1086 static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3) 1087 { 1088 struct device *dev = rr3->dev; 1089 struct rc_dev *rc; 1090 int ret = -ENODEV; 1091 u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct); 1092 1093 rc = rc_allocate_device(); 1094 if (!rc) { 1095 dev_err(dev, "remote input dev allocation failed\n"); 1096 goto out; 1097 } 1098 1099 snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s " 1100 "Infrared Remote Transceiver (%04x:%04x)", 1101 prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "", 1102 le16_to_cpu(rr3->udev->descriptor.idVendor), prod); 1103 1104 usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys)); 1105 1106 rc->input_name = rr3->name; 1107 rc->input_phys = rr3->phys; 1108 usb_to_input_id(rr3->udev, &rc->input_id); 1109 rc->dev.parent = dev; 1110 rc->priv = rr3; 1111 rc->driver_type = RC_DRIVER_IR_RAW; 1112 rc->allowed_protos = RC_TYPE_ALL; 1113 rc->min_timeout = MS_TO_NS(RR3_RX_MIN_TIMEOUT); 1114 rc->max_timeout = MS_TO_NS(RR3_RX_MAX_TIMEOUT); 1115 rc->timeout = redrat3_get_timeout(dev, rc, rr3->udev); 1116 rc->tx_ir = redrat3_transmit_ir; 1117 rc->s_tx_carrier = redrat3_set_tx_carrier; 1118 rc->driver_name = DRIVER_NAME; 1119 rc->map_name = RC_MAP_HAUPPAUGE; 1120 1121 ret = rc_register_device(rc); 1122 if (ret < 0) { 1123 dev_err(dev, "remote dev registration failed\n"); 1124 goto out; 1125 } 1126 1127 return rc; 1128 1129 out: 1130 rc_free_device(rc); 1131 return NULL; 1132 } 1133 1134 static int __devinit redrat3_dev_probe(struct usb_interface *intf, 1135 const struct usb_device_id *id) 1136 { 1137 struct usb_device *udev = interface_to_usbdev(intf); 1138 struct device *dev = &intf->dev; 1139 struct usb_host_interface *uhi; 1140 struct redrat3_dev *rr3; 1141 struct usb_endpoint_descriptor *ep; 1142 struct usb_endpoint_descriptor *ep_in = NULL; 1143 struct usb_endpoint_descriptor *ep_out = NULL; 1144 u8 addr, attrs; 1145 int pipe, i; 1146 int retval = -ENOMEM; 1147 1148 rr3_ftr(dev, "%s called\n", __func__); 1149 1150 uhi = intf->cur_altsetting; 1151 1152 /* find our bulk-in and bulk-out endpoints */ 1153 for (i = 0; i < uhi->desc.bNumEndpoints; ++i) { 1154 ep = &uhi->endpoint[i].desc; 1155 addr = ep->bEndpointAddress; 1156 attrs = ep->bmAttributes; 1157 1158 if ((ep_in == NULL) && 1159 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && 1160 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == 1161 USB_ENDPOINT_XFER_BULK)) { 1162 rr3_dbg(dev, "found bulk-in endpoint at 0x%02x\n", 1163 ep->bEndpointAddress); 1164 /* data comes in on 0x82, 0x81 is for other data... */ 1165 if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR) 1166 ep_in = ep; 1167 } 1168 1169 if ((ep_out == NULL) && 1170 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && 1171 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == 1172 USB_ENDPOINT_XFER_BULK)) { 1173 rr3_dbg(dev, "found bulk-out endpoint at 0x%02x\n", 1174 ep->bEndpointAddress); 1175 ep_out = ep; 1176 } 1177 } 1178 1179 if (!ep_in || !ep_out) { 1180 dev_err(dev, "Couldn't find both in and out endpoints\n"); 1181 retval = -ENODEV; 1182 goto no_endpoints; 1183 } 1184 1185 /* allocate memory for our device state and initialize it */ 1186 rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL); 1187 if (rr3 == NULL) { 1188 dev_err(dev, "Memory allocation failure\n"); 1189 goto error; 1190 } 1191 1192 rr3->dev = &intf->dev; 1193 1194 /* set up bulk-in endpoint */ 1195 rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL); 1196 if (!rr3->read_urb) { 1197 dev_err(dev, "Read urb allocation failure\n"); 1198 goto error; 1199 } 1200 1201 rr3->ep_in = ep_in; 1202 rr3->bulk_in_buf = usb_alloc_coherent(udev, ep_in->wMaxPacketSize, 1203 GFP_ATOMIC, &rr3->dma_in); 1204 if (!rr3->bulk_in_buf) { 1205 dev_err(dev, "Read buffer allocation failure\n"); 1206 goto error; 1207 } 1208 1209 pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress); 1210 usb_fill_bulk_urb(rr3->read_urb, udev, pipe, 1211 rr3->bulk_in_buf, ep_in->wMaxPacketSize, 1212 (usb_complete_t)redrat3_handle_async, rr3); 1213 1214 /* set up bulk-out endpoint*/ 1215 rr3->write_urb = usb_alloc_urb(0, GFP_KERNEL); 1216 if (!rr3->write_urb) { 1217 dev_err(dev, "Write urb allocation failure\n"); 1218 goto error; 1219 } 1220 1221 rr3->ep_out = ep_out; 1222 rr3->bulk_out_buf = usb_alloc_coherent(udev, ep_out->wMaxPacketSize, 1223 GFP_ATOMIC, &rr3->dma_out); 1224 if (!rr3->bulk_out_buf) { 1225 dev_err(dev, "Write buffer allocation failure\n"); 1226 goto error; 1227 } 1228 1229 pipe = usb_sndbulkpipe(udev, ep_out->bEndpointAddress); 1230 usb_fill_bulk_urb(rr3->write_urb, udev, pipe, 1231 rr3->bulk_out_buf, ep_out->wMaxPacketSize, 1232 (usb_complete_t)redrat3_write_bulk_callback, rr3); 1233 1234 mutex_init(&rr3->lock); 1235 rr3->udev = udev; 1236 1237 redrat3_reset(rr3); 1238 redrat3_get_firmware_rev(rr3); 1239 1240 /* might be all we need to do? */ 1241 retval = redrat3_enable_detector(rr3); 1242 if (retval < 0) 1243 goto error; 1244 1245 /* default.. will get overridden by any sends with a freq defined */ 1246 rr3->carrier = 38000; 1247 1248 rr3->rc = redrat3_init_rc_dev(rr3); 1249 if (!rr3->rc) 1250 goto error; 1251 1252 setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3); 1253 1254 /* we can register the device now, as it is ready */ 1255 usb_set_intfdata(intf, rr3); 1256 1257 rr3_ftr(dev, "Exiting %s\n", __func__); 1258 return 0; 1259 1260 error: 1261 redrat3_delete(rr3, rr3->udev); 1262 1263 no_endpoints: 1264 dev_err(dev, "%s: retval = %x", __func__, retval); 1265 1266 return retval; 1267 } 1268 1269 static void __devexit redrat3_dev_disconnect(struct usb_interface *intf) 1270 { 1271 struct usb_device *udev = interface_to_usbdev(intf); 1272 struct redrat3_dev *rr3 = usb_get_intfdata(intf); 1273 1274 rr3_ftr(&intf->dev, "Entering %s\n", __func__); 1275 1276 if (!rr3) 1277 return; 1278 1279 redrat3_disable_detector(rr3); 1280 1281 usb_set_intfdata(intf, NULL); 1282 rc_unregister_device(rr3->rc); 1283 redrat3_delete(rr3, udev); 1284 1285 rr3_ftr(&intf->dev, "RedRat3 IR Transceiver now disconnected\n"); 1286 } 1287 1288 static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message) 1289 { 1290 struct redrat3_dev *rr3 = usb_get_intfdata(intf); 1291 rr3_ftr(rr3->dev, "suspend\n"); 1292 usb_kill_urb(rr3->read_urb); 1293 return 0; 1294 } 1295 1296 static int redrat3_dev_resume(struct usb_interface *intf) 1297 { 1298 struct redrat3_dev *rr3 = usb_get_intfdata(intf); 1299 rr3_ftr(rr3->dev, "resume\n"); 1300 if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC)) 1301 return -EIO; 1302 return 0; 1303 } 1304 1305 static struct usb_driver redrat3_dev_driver = { 1306 .name = DRIVER_NAME, 1307 .probe = redrat3_dev_probe, 1308 .disconnect = redrat3_dev_disconnect, 1309 .suspend = redrat3_dev_suspend, 1310 .resume = redrat3_dev_resume, 1311 .reset_resume = redrat3_dev_resume, 1312 .id_table = redrat3_dev_table 1313 }; 1314 1315 static int __init redrat3_dev_init(void) 1316 { 1317 int ret; 1318 1319 ret = usb_register(&redrat3_dev_driver); 1320 if (ret < 0) 1321 pr_err(DRIVER_NAME 1322 ": usb register failed, result = %d\n", ret); 1323 1324 return ret; 1325 } 1326 1327 static void __exit redrat3_dev_exit(void) 1328 { 1329 usb_deregister(&redrat3_dev_driver); 1330 } 1331 1332 module_init(redrat3_dev_init); 1333 module_exit(redrat3_dev_exit); 1334 1335 MODULE_DESCRIPTION(DRIVER_DESC); 1336 MODULE_AUTHOR(DRIVER_AUTHOR); 1337 MODULE_AUTHOR(DRIVER_AUTHOR2); 1338 MODULE_LICENSE("GPL"); 1339 MODULE_DEVICE_TABLE(usb, redrat3_dev_table); 1340 1341 module_param(debug, int, S_IRUGO | S_IWUSR); 1342 MODULE_PARM_DESC(debug, "Enable module debug spew. 0 = no debugging (default) " 1343 "0x1 = standard debug messages, 0x2 = function tracing debug. " 1344 "Flag bits are addative (i.e., 0x3 for both debug types)."); 1345