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path: root/drivers/media/rc/redrat3.c
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Diffstat (limited to 'drivers/media/rc/redrat3.c')
-rw-r--r--drivers/media/rc/redrat3.c1344
1 files changed, 1344 insertions, 0 deletions
diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c
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index 000000000000..5147767ccb78
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+++ b/drivers/media/rc/redrat3.c
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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
64static int debug = 1;
65#else
66static 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 */
163static 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 */
172struct 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 */
233struct 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
247static 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
261static 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 */
289static 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
309static 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
370static 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... */
382static 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 */
403static 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 */
418static 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
436static 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 */
541static 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 */
569static 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 */
595static 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
614static 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
632static 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
665static 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
705static 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
732static 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
779static 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 */
793static 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
833out:
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 */
841static 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
889static 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
905static 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
913static 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
922static 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
1074out:
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
1086static 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
1129out:
1130 rc_free_device(rc);
1131 return NULL;
1132}
1133
1134static 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
1260error:
1261 redrat3_delete(rr3, rr3->udev);
1262
1263no_endpoints:
1264 dev_err(dev, "%s: retval = %x", __func__, retval);
1265
1266 return retval;
1267}
1268
1269static 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
1288static 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
1296static 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
1305static 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
1315static 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
1327static void __exit redrat3_dev_exit(void)
1328{
1329 usb_deregister(&redrat3_dev_driver);
1330}
1331
1332module_init(redrat3_dev_init);
1333module_exit(redrat3_dev_exit);
1334
1335MODULE_DESCRIPTION(DRIVER_DESC);
1336MODULE_AUTHOR(DRIVER_AUTHOR);
1337MODULE_AUTHOR(DRIVER_AUTHOR2);
1338MODULE_LICENSE("GPL");
1339MODULE_DEVICE_TABLE(usb, redrat3_dev_table);
1340
1341module_param(debug, int, S_IRUGO | S_IWUSR);
1342MODULE_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).");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-21 17:08:40 -0500