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Jarod Wilson2154be62011-05-04 14:02:42 -03001/*
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
Jarod Wilson2154be62011-05-04 14:02:42 -0300198 /* locks this structure */
199 struct mutex lock;
200
201 /* rx signal timeout timer */
202 struct timer_list rx_timeout;
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300203 u32 hw_timeout;
Jarod Wilson2154be62011-05-04 14:02:42 -0300204
Jarod Wilson2154be62011-05-04 14:02:42 -0300205 /* 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 */
227struct 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
241static 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
255static 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 */
283static void redrat3_issue_async(struct redrat3_dev *rr3)
284{
285 int res;
286
287 rr3_ftr(rr3->dev, "Entering %s\n", __func__);
288
Jarod Wilson2154be62011-05-04 14:02:42 -0300289 memset(rr3->bulk_in_buf, 0, rr3->ep_in->wMaxPacketSize);
290 res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC);
291 if (res)
292 rr3_dbg(rr3->dev, "%s: receive request FAILED! "
293 "(res %d, len %d)\n", __func__, res,
294 rr3->read_urb->transfer_buffer_length);
295}
296
297static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code)
298{
299 if (!rr3->transmitting && (code != 0x40))
300 dev_info(rr3->dev, "fw error code 0x%02x: ", code);
301
302 switch (code) {
303 case 0x00:
304 pr_cont("No Error\n");
305 break;
306
307 /* Codes 0x20 through 0x2f are IR Firmware Errors */
308 case 0x20:
309 pr_cont("Initial signal pulse not long enough "
310 "to measure carrier frequency\n");
311 break;
312 case 0x21:
313 pr_cont("Not enough length values allocated for signal\n");
314 break;
315 case 0x22:
316 pr_cont("Not enough memory allocated for signal data\n");
317 break;
318 case 0x23:
319 pr_cont("Too many signal repeats\n");
320 break;
321 case 0x28:
322 pr_cont("Insufficient memory available for IR signal "
323 "data memory allocation\n");
324 break;
325 case 0x29:
326 pr_cont("Insufficient memory available "
327 "for IrDa signal data memory allocation\n");
328 break;
329
330 /* Codes 0x30 through 0x3f are USB Firmware Errors */
331 case 0x30:
332 pr_cont("Insufficient memory available for bulk "
333 "transfer structure\n");
334 break;
335
336 /*
337 * Other error codes... These are primarily errors that can occur in
338 * the control messages sent to the redrat
339 */
340 case 0x40:
341 if (!rr3->transmitting)
342 pr_cont("Signal capture has been terminated\n");
343 break;
344 case 0x41:
345 pr_cont("Attempt to set/get and unknown signal I/O "
346 "algorithm parameter\n");
347 break;
348 case 0x42:
349 pr_cont("Signal capture already started\n");
350 break;
351
352 default:
353 pr_cont("Unknown Error\n");
354 break;
355 }
356}
357
358static u32 redrat3_val_to_mod_freq(struct redrat3_signal_header *ph)
359{
360 u32 mod_freq = 0;
361
362 if (ph->mod_freq_count != 0)
363 mod_freq = (RR3_CLK * ph->no_periods) /
364 (ph->mod_freq_count * RR3_CLK_PER_COUNT);
365
366 return mod_freq;
367}
368
369/* this function scales down the figures for the same result... */
370static u32 redrat3_len_to_us(u32 length)
371{
372 u32 biglen = length * 1000;
373 u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000;
374 u32 result = (u32) (biglen / divisor);
375
376 /* don't allow zero lengths to go back, breaks lirc */
377 return result ? result : 1;
378}
379
380/*
381 * convert us back into redrat3 lengths
382 *
383 * length * 1000 length * 1000000
384 * ------------- = ---------------- = micro
385 * rr3clk / 1000 rr3clk
386
387 * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000
388 * ----- = 4 ----- = 6 -------------- = len ---------------------
389 * 3 2 1000000 1000
390 */
391static u32 redrat3_us_to_len(u32 microsec)
392{
393 u32 result;
394 u32 divisor;
395
396 microsec &= IR_MAX_DURATION;
397 divisor = (RR3_CLK_CONV_FACTOR / 1000);
398 result = (u32)(microsec * divisor) / 1000;
399
400 /* don't allow zero lengths to go back, breaks lirc */
401 return result ? result : 1;
402
403}
404
Jarod Wilson68b2a692011-07-13 18:26:05 -0300405/* timer callback to send reset event */
Jarod Wilson2154be62011-05-04 14:02:42 -0300406static void redrat3_rx_timeout(unsigned long data)
407{
408 struct redrat3_dev *rr3 = (struct redrat3_dev *)data;
Jarod Wilson2154be62011-05-04 14:02:42 -0300409
410 rr3_dbg(rr3->dev, "calling ir_raw_event_reset\n");
411 ir_raw_event_reset(rr3->rc);
412}
413
414static void redrat3_process_ir_data(struct redrat3_dev *rr3)
415{
416 DEFINE_IR_RAW_EVENT(rawir);
417 struct redrat3_signal_header header;
418 struct device *dev;
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300419 int i, trailer = 0;
Jarod Wilson2154be62011-05-04 14:02:42 -0300420 unsigned long delay;
421 u32 mod_freq, single_len;
422 u16 *len_vals;
423 u8 *data_vals;
424 u32 tmp32;
425 u16 tmp16;
426 char *sig_data;
427
428 if (!rr3) {
429 pr_err("%s called with no context!\n", __func__);
430 return;
431 }
432
433 rr3_ftr(rr3->dev, "Entered %s\n", __func__);
434
435 dev = rr3->dev;
436 sig_data = rr3->pbuf;
437
438 header.length = rr3->pktlen;
439 header.transfer_type = rr3->pkttype;
440
441 /* Sanity check */
442 if (!(header.length >= RR3_HEADER_LENGTH))
443 dev_warn(dev, "read returned less than rr3 header len\n");
444
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300445 /* Make sure we reset the IR kfifo after a bit of inactivity */
446 delay = usecs_to_jiffies(rr3->hw_timeout);
Jarod Wilson2154be62011-05-04 14:02:42 -0300447 mod_timer(&rr3->rx_timeout, jiffies + delay);
448
449 memcpy(&tmp32, sig_data + RR3_PAUSE_OFFSET, sizeof(tmp32));
450 header.pause = be32_to_cpu(tmp32);
451
452 memcpy(&tmp16, sig_data + RR3_FREQ_COUNT_OFFSET, sizeof(tmp16));
453 header.mod_freq_count = be16_to_cpu(tmp16);
454
455 memcpy(&tmp16, sig_data + RR3_NUM_PERIOD_OFFSET, sizeof(tmp16));
456 header.no_periods = be16_to_cpu(tmp16);
457
458 header.max_lengths = sig_data[RR3_MAX_LENGTHS_OFFSET];
459 header.no_lengths = sig_data[RR3_NUM_LENGTHS_OFFSET];
460
461 memcpy(&tmp16, sig_data + RR3_MAX_SIGS_OFFSET, sizeof(tmp16));
462 header.max_sig_size = be16_to_cpu(tmp16);
463
464 memcpy(&tmp16, sig_data + RR3_NUM_SIGS_OFFSET, sizeof(tmp16));
465 header.sig_size = be16_to_cpu(tmp16);
466
467 header.no_repeats= sig_data[RR3_REPEATS_OFFSET];
468
469 if (debug) {
470 redrat3_dump_signal_header(&header);
471 redrat3_dump_signal_data(sig_data, header.sig_size);
472 }
473
474 mod_freq = redrat3_val_to_mod_freq(&header);
475 rr3_dbg(dev, "Got mod_freq of %u\n", mod_freq);
476
477 /* Here we pull out the 'length' values from the signal */
478 len_vals = (u16 *)(sig_data + RR3_HEADER_LENGTH);
479
480 data_vals = sig_data + RR3_HEADER_LENGTH +
481 (header.max_lengths * sizeof(u16));
482
483 /* process each rr3 encoded byte into an int */
484 for (i = 0; i < header.sig_size; i++) {
485 u16 val = len_vals[data_vals[i]];
486 single_len = redrat3_len_to_us((u32)be16_to_cpu(val));
487
Jarod Wilson2154be62011-05-04 14:02:42 -0300488 /* we should always get pulse/space/pulse/space samples */
489 if (i % 2)
490 rawir.pulse = false;
491 else
492 rawir.pulse = true;
493
494 rawir.duration = US_TO_NS(single_len);
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300495 /* Save initial pulse length to fudge trailer */
496 if (i == 0)
497 trailer = rawir.duration;
Jarod Wilson2c594ff2011-07-13 18:26:06 -0300498 /* cap the value to IR_MAX_DURATION */
499 rawir.duration &= IR_MAX_DURATION;
500
Jarod Wilson2154be62011-05-04 14:02:42 -0300501 rr3_dbg(dev, "storing %s with duration %d (i: %d)\n",
502 rawir.pulse ? "pulse" : "space", rawir.duration, i);
503 ir_raw_event_store_with_filter(rr3->rc, &rawir);
504 }
505
506 /* add a trailing space, if need be */
507 if (i % 2) {
508 rawir.pulse = false;
509 /* this duration is made up, and may not be ideal... */
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300510 if (trailer < US_TO_NS(1000))
511 rawir.duration = US_TO_NS(2800);
512 else
513 rawir.duration = trailer;
Jarod Wilson2154be62011-05-04 14:02:42 -0300514 rr3_dbg(dev, "storing trailing space with duration %d\n",
515 rawir.duration);
516 ir_raw_event_store_with_filter(rr3->rc, &rawir);
517 }
518
519 rr3_dbg(dev, "calling ir_raw_event_handle\n");
520 ir_raw_event_handle(rr3->rc);
521
522 return;
523}
524
525/* Util fn to send rr3 cmds */
526static u8 redrat3_send_cmd(int cmd, struct redrat3_dev *rr3)
527{
528 struct usb_device *udev;
529 u8 *data;
530 int res;
531
532 data = kzalloc(sizeof(u8), GFP_KERNEL);
533 if (!data)
534 return -ENOMEM;
535
536 udev = rr3->udev;
537 res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd,
538 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
539 0x0000, 0x0000, data, sizeof(u8), HZ * 10);
540
541 if (res < 0) {
542 dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d",
543 __func__, res, *data);
544 res = -EIO;
545 } else
546 res = (u8)data[0];
547
548 kfree(data);
549
550 return res;
551}
552
553/* Enables the long range detector and starts async receive */
554static int redrat3_enable_detector(struct redrat3_dev *rr3)
555{
556 struct device *dev = rr3->dev;
557 u8 ret;
558
559 rr3_ftr(dev, "Entering %s\n", __func__);
560
561 ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3);
562 if (ret != 0)
563 dev_dbg(dev, "%s: unexpected ret of %d\n",
564 __func__, ret);
565
566 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
567 if (ret != 1) {
568 dev_err(dev, "%s: detector status: %d, should be 1\n",
569 __func__, ret);
570 return -EIO;
571 }
572
573 rr3->det_enabled = true;
574 redrat3_issue_async(rr3);
575
576 return 0;
577}
578
579/* Disables the rr3 long range detector */
580static void redrat3_disable_detector(struct redrat3_dev *rr3)
581{
582 struct device *dev = rr3->dev;
583 u8 ret;
584
585 rr3_ftr(dev, "Entering %s\n", __func__);
586
587 ret = redrat3_send_cmd(RR3_RC_DET_DISABLE, rr3);
588 if (ret != 0)
589 dev_err(dev, "%s: failure!\n", __func__);
590
591 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
592 if (ret != 0)
593 dev_warn(dev, "%s: detector status: %d, should be 0\n",
594 __func__, ret);
595
596 rr3->det_enabled = false;
597}
598
599static inline void redrat3_delete(struct redrat3_dev *rr3,
600 struct usb_device *udev)
601{
602 rr3_ftr(rr3->dev, "%s cleaning up\n", __func__);
603 usb_kill_urb(rr3->read_urb);
604 usb_kill_urb(rr3->write_urb);
605
606 usb_free_urb(rr3->read_urb);
607 usb_free_urb(rr3->write_urb);
608
609 usb_free_coherent(udev, rr3->ep_in->wMaxPacketSize,
610 rr3->bulk_in_buf, rr3->dma_in);
611 usb_free_coherent(udev, rr3->ep_out->wMaxPacketSize,
612 rr3->bulk_out_buf, rr3->dma_out);
613
614 kfree(rr3);
615}
616
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300617static u32 redrat3_get_timeout(struct redrat3_dev *rr3)
Jarod Wilson2154be62011-05-04 14:02:42 -0300618{
619 u32 *tmp;
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300620 u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */
Jarod Wilson2154be62011-05-04 14:02:42 -0300621 int len, ret, pipe;
622
623 len = sizeof(*tmp);
624 tmp = kzalloc(len, GFP_KERNEL);
625 if (!tmp) {
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300626 dev_warn(rr3->dev, "Memory allocation faillure\n");
Jarod Wilson2154be62011-05-04 14:02:42 -0300627 return timeout;
628 }
629
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300630 pipe = usb_rcvctrlpipe(rr3->udev, 0);
631 ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM,
Jarod Wilson2154be62011-05-04 14:02:42 -0300632 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
633 RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5);
634 if (ret != len) {
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300635 dev_warn(rr3->dev, "Failed to read timeout from hardware\n");
Jarod Wilson2154be62011-05-04 14:02:42 -0300636 return timeout;
637 }
638
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300639 timeout = redrat3_len_to_us(be32_to_cpu(*tmp));
Jarod Wilson2154be62011-05-04 14:02:42 -0300640
Jarod Wilsonc53f9f02011-07-13 18:26:07 -0300641 rr3_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000);
Jarod Wilson2154be62011-05-04 14:02:42 -0300642 return timeout;
643}
644
645static void redrat3_reset(struct redrat3_dev *rr3)
646{
647 struct usb_device *udev = rr3->udev;
648 struct device *dev = rr3->dev;
649 int rc, rxpipe, txpipe;
650 u8 *val;
651 int len = sizeof(u8);
652
653 rr3_ftr(dev, "Entering %s\n", __func__);
654
655 rxpipe = usb_rcvctrlpipe(udev, 0);
656 txpipe = usb_sndctrlpipe(udev, 0);
657
658 val = kzalloc(len, GFP_KERNEL);
659 if (!val) {
660 dev_err(dev, "Memory allocation failure\n");
661 return;
662 }
663
664 *val = 0x01;
665 rc = usb_control_msg(udev, rxpipe, RR3_RESET,
666 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
667 RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25);
668 rr3_dbg(dev, "reset returned 0x%02x\n", rc);
669
670 *val = 5;
671 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
672 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
673 RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25);
674 rr3_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc);
675
676 *val = RR3_DRIVER_MAXLENS;
677 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
678 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
679 RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25);
680 rr3_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc);
681
682 kfree(val);
683}
684
685static void redrat3_get_firmware_rev(struct redrat3_dev *rr3)
686{
687 int rc = 0;
688 char *buffer;
689
690 rr3_ftr(rr3->dev, "Entering %s\n", __func__);
691
692 buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL);
693 if (!buffer) {
694 dev_err(rr3->dev, "Memory allocation failure\n");
695 return;
696 }
697
698 rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0),
699 RR3_FW_VERSION,
700 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
701 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5);
702
703 if (rc >= 0)
704 dev_info(rr3->dev, "Firmware rev: %s", buffer);
705 else
706 dev_err(rr3->dev, "Problem fetching firmware ID\n");
707
708 kfree(buffer);
709 rr3_ftr(rr3->dev, "Exiting %s\n", __func__);
710}
711
712static void redrat3_read_packet_start(struct redrat3_dev *rr3, int len)
713{
714 u16 tx_error;
715 u16 hdrlen;
716
717 rr3_ftr(rr3->dev, "Entering %s\n", __func__);
718
719 /* grab the Length and type of transfer */
720 memcpy(&(rr3->pktlen), (unsigned char *) rr3->bulk_in_buf,
721 sizeof(rr3->pktlen));
722 memcpy(&(rr3->pkttype), ((unsigned char *) rr3->bulk_in_buf +
723 sizeof(rr3->pktlen)),
724 sizeof(rr3->pkttype));
725
726 /*data needs conversion to know what its real values are*/
727 rr3->pktlen = be16_to_cpu(rr3->pktlen);
728 rr3->pkttype = be16_to_cpu(rr3->pkttype);
729
730 switch (rr3->pkttype) {
731 case RR3_ERROR:
732 memcpy(&tx_error, ((unsigned char *)rr3->bulk_in_buf
733 + (sizeof(rr3->pktlen) + sizeof(rr3->pkttype))),
734 sizeof(tx_error));
735 tx_error = be16_to_cpu(tx_error);
736 redrat3_dump_fw_error(rr3, tx_error);
737 break;
738
739 case RR3_MOD_SIGNAL_IN:
740 hdrlen = sizeof(rr3->pktlen) + sizeof(rr3->pkttype);
741 rr3->bytes_read = len;
742 rr3->bytes_read -= hdrlen;
743 rr3->datap = &(rr3->pbuf[0]);
744
745 memcpy(rr3->datap, ((unsigned char *)rr3->bulk_in_buf + hdrlen),
746 rr3->bytes_read);
747 rr3->datap += rr3->bytes_read;
748 rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n",
749 rr3->bytes_read, rr3->pktlen);
750 break;
751
752 default:
753 rr3_dbg(rr3->dev, "ignoring packet with type 0x%02x, "
754 "len of %d, 0x%02x\n", rr3->pkttype, len, rr3->pktlen);
755 break;
756 }
757}
758
759static void redrat3_read_packet_continue(struct redrat3_dev *rr3, int len)
760{
761
762 rr3_ftr(rr3->dev, "Entering %s\n", __func__);
763
764 memcpy(rr3->datap, (unsigned char *)rr3->bulk_in_buf, len);
765 rr3->datap += len;
766
767 rr3->bytes_read += len;
768 rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n",
769 rr3->bytes_read, rr3->pktlen);
770}
771
772/* gather IR data from incoming urb, process it when we have enough */
773static int redrat3_get_ir_data(struct redrat3_dev *rr3, int len)
774{
775 struct device *dev = rr3->dev;
776 int ret = 0;
777
778 rr3_ftr(dev, "Entering %s\n", __func__);
779
780 if (rr3->pktlen > RR3_MAX_BUF_SIZE) {
781 dev_err(rr3->dev, "error: packet larger than buffer\n");
782 ret = -EINVAL;
783 goto out;
784 }
785
786 if ((rr3->bytes_read == 0) &&
787 (len >= (sizeof(rr3->pkttype) + sizeof(rr3->pktlen)))) {
788 redrat3_read_packet_start(rr3, len);
789 } else if (rr3->bytes_read != 0) {
790 redrat3_read_packet_continue(rr3, len);
791 } else if (rr3->bytes_read == 0) {
792 dev_err(dev, "error: no packet data read\n");
793 ret = -ENODATA;
794 goto out;
795 }
796
797 if (rr3->bytes_read > rr3->pktlen) {
798 dev_err(dev, "bytes_read (%d) greater than pktlen (%d)\n",
799 rr3->bytes_read, rr3->pktlen);
800 ret = -EINVAL;
801 goto out;
802 } else if (rr3->bytes_read < rr3->pktlen)
803 /* we're still accumulating data */
804 return 0;
805
806 /* if we get here, we've got IR data to decode */
807 if (rr3->pkttype == RR3_MOD_SIGNAL_IN)
808 redrat3_process_ir_data(rr3);
809 else
810 rr3_dbg(dev, "discarding non-signal data packet "
811 "(type 0x%02x)\n", rr3->pkttype);
812
813out:
814 rr3->bytes_read = 0;
815 rr3->pktlen = 0;
816 rr3->pkttype = 0;
817 return ret;
818}
819
820/* callback function from USB when async USB request has completed */
821static void redrat3_handle_async(struct urb *urb, struct pt_regs *regs)
822{
823 struct redrat3_dev *rr3;
Andrew Vincerdbea1882011-11-08 12:43:45 -0300824 int ret;
Jarod Wilson2154be62011-05-04 14:02:42 -0300825
826 if (!urb)
827 return;
828
829 rr3 = urb->context;
830 if (!rr3) {
831 pr_err("%s called with invalid context!\n", __func__);
832 usb_unlink_urb(urb);
833 return;
834 }
835
836 rr3_ftr(rr3->dev, "Entering %s\n", __func__);
837
Jarod Wilson2154be62011-05-04 14:02:42 -0300838 switch (urb->status) {
839 case 0:
Andrew Vincerdbea1882011-11-08 12:43:45 -0300840 ret = redrat3_get_ir_data(rr3, urb->actual_length);
841 if (!ret) {
842 /* no error, prepare to read more */
843 redrat3_issue_async(rr3);
844 }
Jarod Wilson2154be62011-05-04 14:02:42 -0300845 break;
846
847 case -ECONNRESET:
848 case -ENOENT:
849 case -ESHUTDOWN:
850 usb_unlink_urb(urb);
851 return;
852
853 case -EPIPE:
854 default:
855 dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status);
856 rr3->bytes_read = 0;
857 rr3->pktlen = 0;
858 rr3->pkttype = 0;
859 break;
860 }
Jarod Wilson2154be62011-05-04 14:02:42 -0300861}
862
863static void redrat3_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
864{
865 struct redrat3_dev *rr3;
866 int len;
867
868 if (!urb)
869 return;
870
871 rr3 = urb->context;
872 if (rr3) {
873 len = urb->actual_length;
874 rr3_ftr(rr3->dev, "%s: called (status=%d len=%d)\n",
875 __func__, urb->status, len);
876 }
877}
878
879static u16 mod_freq_to_val(unsigned int mod_freq)
880{
881 int mult = 6000000;
882
883 /* Clk used in mod. freq. generation is CLK24/4. */
884 return (u16)(65536 - (mult / mod_freq));
885}
886
Andrew Vincerdbea1882011-11-08 12:43:45 -0300887static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier)
Jarod Wilson2154be62011-05-04 14:02:42 -0300888{
Andrew Vincerdbea1882011-11-08 12:43:45 -0300889 struct redrat3_dev *rr3 = rcdev->priv;
890 struct device *dev = rr3->dev;
Jarod Wilson2154be62011-05-04 14:02:42 -0300891
Andrew Vincerdbea1882011-11-08 12:43:45 -0300892 rr3_dbg(dev, "Setting modulation frequency to %u", carrier);
Dan Carpenter48cafec2012-09-11 07:11:24 -0300893 if (carrier == 0)
894 return -EINVAL;
895
Jarod Wilson2154be62011-05-04 14:02:42 -0300896 rr3->carrier = carrier;
897
898 return carrier;
899}
900
Andrew Vincerdbea1882011-11-08 12:43:45 -0300901static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
902 unsigned count)
Jarod Wilson2154be62011-05-04 14:02:42 -0300903{
904 struct redrat3_dev *rr3 = rcdev->priv;
905 struct device *dev = rr3->dev;
906 struct redrat3_signal_header header;
Andrew Vincerdbea1882011-11-08 12:43:45 -0300907 int i, j, ret, ret_len, offset;
Jarod Wilson2154be62011-05-04 14:02:42 -0300908 int lencheck, cur_sample_len, pipe;
909 char *buffer = NULL, *sigdata = NULL;
910 int *sample_lens = NULL;
911 u32 tmpi;
912 u16 tmps;
913 u8 *datap;
914 u8 curlencheck = 0;
915 u16 *lengths_ptr;
916 int sendbuf_len;
917
918 rr3_ftr(dev, "Entering %s\n", __func__);
919
920 if (rr3->transmitting) {
921 dev_warn(dev, "%s: transmitter already in use\n", __func__);
922 return -EAGAIN;
923 }
924
Jarod Wilson2154be62011-05-04 14:02:42 -0300925 if (count > (RR3_DRIVER_MAXLENS * 2))
926 return -EINVAL;
927
Andrew Vincerdbea1882011-11-08 12:43:45 -0300928 /* rr3 will disable rc detector on transmit */
929 rr3->det_enabled = false;
Jarod Wilson2154be62011-05-04 14:02:42 -0300930 rr3->transmitting = true;
931
Jarod Wilson2154be62011-05-04 14:02:42 -0300932 sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL);
933 if (!sample_lens) {
934 ret = -ENOMEM;
935 goto out;
936 }
937
938 for (i = 0; i < count; i++) {
939 for (lencheck = 0; lencheck < curlencheck; lencheck++) {
940 cur_sample_len = redrat3_us_to_len(txbuf[i]);
941 if (sample_lens[lencheck] == cur_sample_len)
942 break;
943 }
944 if (lencheck == curlencheck) {
945 cur_sample_len = redrat3_us_to_len(txbuf[i]);
946 rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n",
947 i, txbuf[i], curlencheck, cur_sample_len);
948 if (curlencheck < 255) {
949 /* now convert the value to a proper
950 * rr3 value.. */
951 sample_lens[curlencheck] = cur_sample_len;
952 curlencheck++;
953 } else {
954 dev_err(dev, "signal too long\n");
955 ret = -EINVAL;
956 goto out;
957 }
958 }
959 }
960
961 sigdata = kzalloc((count + RR3_TX_TRAILER_LEN), GFP_KERNEL);
962 if (!sigdata) {
963 ret = -ENOMEM;
964 goto out;
965 }
966
967 sigdata[count] = RR3_END_OF_SIGNAL;
968 sigdata[count + 1] = RR3_END_OF_SIGNAL;
969 for (i = 0; i < count; i++) {
970 for (j = 0; j < curlencheck; j++) {
971 if (sample_lens[j] == redrat3_us_to_len(txbuf[i]))
972 sigdata[i] = j;
973 }
974 }
975
976 offset = RR3_TX_HEADER_OFFSET;
977 sendbuf_len = RR3_HEADER_LENGTH + (sizeof(u16) * RR3_DRIVER_MAXLENS)
978 + count + RR3_TX_TRAILER_LEN + offset;
979
980 buffer = kzalloc(sendbuf_len, GFP_KERNEL);
981 if (!buffer) {
982 ret = -ENOMEM;
983 goto out;
984 }
985
986 /* fill in our packet header */
987 header.length = sendbuf_len - offset;
988 header.transfer_type = RR3_MOD_SIGNAL_OUT;
989 header.pause = redrat3_len_to_us(100);
990 header.mod_freq_count = mod_freq_to_val(rr3->carrier);
991 header.no_periods = 0; /* n/a to transmit */
992 header.max_lengths = RR3_DRIVER_MAXLENS;
993 header.no_lengths = curlencheck;
994 header.max_sig_size = RR3_MAX_SIG_SIZE;
995 header.sig_size = count + RR3_TX_TRAILER_LEN;
996 /* we currently rely on repeat handling in the IR encoding source */
997 header.no_repeats = 0;
998
999 tmps = cpu_to_be16(header.length);
1000 memcpy(buffer, &tmps, 2);
1001
1002 tmps = cpu_to_be16(header.transfer_type);
1003 memcpy(buffer + 2, &tmps, 2);
1004
1005 tmpi = cpu_to_be32(header.pause);
1006 memcpy(buffer + offset, &tmpi, sizeof(tmpi));
1007
1008 tmps = cpu_to_be16(header.mod_freq_count);
1009 memcpy(buffer + offset + RR3_FREQ_COUNT_OFFSET, &tmps, 2);
1010
1011 buffer[offset + RR3_NUM_LENGTHS_OFFSET] = header.no_lengths;
1012
1013 tmps = cpu_to_be16(header.sig_size);
1014 memcpy(buffer + offset + RR3_NUM_SIGS_OFFSET, &tmps, 2);
1015
1016 buffer[offset + RR3_REPEATS_OFFSET] = header.no_repeats;
1017
1018 lengths_ptr = (u16 *)(buffer + offset + RR3_HEADER_LENGTH);
1019 for (i = 0; i < curlencheck; ++i)
1020 lengths_ptr[i] = cpu_to_be16(sample_lens[i]);
1021
1022 datap = (u8 *)(buffer + offset + RR3_HEADER_LENGTH +
1023 (sizeof(u16) * RR3_DRIVER_MAXLENS));
1024 memcpy(datap, sigdata, (count + RR3_TX_TRAILER_LEN));
1025
1026 if (debug) {
1027 redrat3_dump_signal_header(&header);
1028 redrat3_dump_signal_data(buffer, header.sig_size);
1029 }
1030
1031 pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
1032 tmps = usb_bulk_msg(rr3->udev, pipe, buffer,
1033 sendbuf_len, &ret_len, 10 * HZ);
1034 rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, tmps);
1035
1036 /* now tell the hardware to transmit what we sent it */
1037 pipe = usb_rcvctrlpipe(rr3->udev, 0);
1038 ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
1039 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
1040 0, 0, buffer, 2, HZ * 10);
1041
1042 if (ret < 0)
1043 dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
1044 else
Andrew Vincerdbea1882011-11-08 12:43:45 -03001045 ret = count;
Jarod Wilson2154be62011-05-04 14:02:42 -03001046
1047out:
1048 kfree(sample_lens);
1049 kfree(buffer);
1050 kfree(sigdata);
1051
1052 rr3->transmitting = false;
Andrew Vincerdbea1882011-11-08 12:43:45 -03001053 /* rr3 re-enables rc detector because it was enabled before */
1054 rr3->det_enabled = true;
Jarod Wilson2154be62011-05-04 14:02:42 -03001055
1056 return ret;
1057}
1058
1059static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3)
1060{
1061 struct device *dev = rr3->dev;
1062 struct rc_dev *rc;
1063 int ret = -ENODEV;
1064 u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct);
1065
1066 rc = rc_allocate_device();
1067 if (!rc) {
1068 dev_err(dev, "remote input dev allocation failed\n");
1069 goto out;
1070 }
1071
1072 snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s "
1073 "Infrared Remote Transceiver (%04x:%04x)",
1074 prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "",
1075 le16_to_cpu(rr3->udev->descriptor.idVendor), prod);
1076
1077 usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys));
1078
1079 rc->input_name = rr3->name;
1080 rc->input_phys = rr3->phys;
1081 usb_to_input_id(rr3->udev, &rc->input_id);
1082 rc->dev.parent = dev;
1083 rc->priv = rr3;
1084 rc->driver_type = RC_DRIVER_IR_RAW;
1085 rc->allowed_protos = RC_TYPE_ALL;
Jarod Wilsonc53f9f02011-07-13 18:26:07 -03001086 rc->timeout = US_TO_NS(2750);
Jarod Wilson2154be62011-05-04 14:02:42 -03001087 rc->tx_ir = redrat3_transmit_ir;
1088 rc->s_tx_carrier = redrat3_set_tx_carrier;
1089 rc->driver_name = DRIVER_NAME;
1090 rc->map_name = RC_MAP_HAUPPAUGE;
1091
1092 ret = rc_register_device(rc);
1093 if (ret < 0) {
1094 dev_err(dev, "remote dev registration failed\n");
1095 goto out;
1096 }
1097
1098 return rc;
1099
1100out:
1101 rc_free_device(rc);
1102 return NULL;
1103}
1104
1105static int __devinit redrat3_dev_probe(struct usb_interface *intf,
1106 const struct usb_device_id *id)
1107{
1108 struct usb_device *udev = interface_to_usbdev(intf);
1109 struct device *dev = &intf->dev;
1110 struct usb_host_interface *uhi;
1111 struct redrat3_dev *rr3;
1112 struct usb_endpoint_descriptor *ep;
1113 struct usb_endpoint_descriptor *ep_in = NULL;
1114 struct usb_endpoint_descriptor *ep_out = NULL;
1115 u8 addr, attrs;
1116 int pipe, i;
1117 int retval = -ENOMEM;
1118
1119 rr3_ftr(dev, "%s called\n", __func__);
1120
1121 uhi = intf->cur_altsetting;
1122
1123 /* find our bulk-in and bulk-out endpoints */
1124 for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {
1125 ep = &uhi->endpoint[i].desc;
1126 addr = ep->bEndpointAddress;
1127 attrs = ep->bmAttributes;
1128
1129 if ((ep_in == NULL) &&
1130 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
1131 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
1132 USB_ENDPOINT_XFER_BULK)) {
1133 rr3_dbg(dev, "found bulk-in endpoint at 0x%02x\n",
1134 ep->bEndpointAddress);
1135 /* data comes in on 0x82, 0x81 is for other data... */
1136 if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR)
1137 ep_in = ep;
1138 }
1139
1140 if ((ep_out == NULL) &&
1141 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
1142 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
1143 USB_ENDPOINT_XFER_BULK)) {
1144 rr3_dbg(dev, "found bulk-out endpoint at 0x%02x\n",
1145 ep->bEndpointAddress);
1146 ep_out = ep;
1147 }
1148 }
1149
1150 if (!ep_in || !ep_out) {
1151 dev_err(dev, "Couldn't find both in and out endpoints\n");
1152 retval = -ENODEV;
1153 goto no_endpoints;
1154 }
1155
1156 /* allocate memory for our device state and initialize it */
1157 rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL);
1158 if (rr3 == NULL) {
1159 dev_err(dev, "Memory allocation failure\n");
Dan Carpenter7eb75712011-05-26 05:55:08 -03001160 goto no_endpoints;
Jarod Wilson2154be62011-05-04 14:02:42 -03001161 }
1162
1163 rr3->dev = &intf->dev;
1164
1165 /* set up bulk-in endpoint */
1166 rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL);
1167 if (!rr3->read_urb) {
1168 dev_err(dev, "Read urb allocation failure\n");
1169 goto error;
1170 }
1171
1172 rr3->ep_in = ep_in;
1173 rr3->bulk_in_buf = usb_alloc_coherent(udev, ep_in->wMaxPacketSize,
1174 GFP_ATOMIC, &rr3->dma_in);
1175 if (!rr3->bulk_in_buf) {
1176 dev_err(dev, "Read buffer allocation failure\n");
1177 goto error;
1178 }
1179
1180 pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress);
1181 usb_fill_bulk_urb(rr3->read_urb, udev, pipe,
1182 rr3->bulk_in_buf, ep_in->wMaxPacketSize,
1183 (usb_complete_t)redrat3_handle_async, rr3);
1184
1185 /* set up bulk-out endpoint*/
1186 rr3->write_urb = usb_alloc_urb(0, GFP_KERNEL);
1187 if (!rr3->write_urb) {
1188 dev_err(dev, "Write urb allocation failure\n");
1189 goto error;
1190 }
1191
1192 rr3->ep_out = ep_out;
1193 rr3->bulk_out_buf = usb_alloc_coherent(udev, ep_out->wMaxPacketSize,
1194 GFP_ATOMIC, &rr3->dma_out);
1195 if (!rr3->bulk_out_buf) {
1196 dev_err(dev, "Write buffer allocation failure\n");
1197 goto error;
1198 }
1199
1200 pipe = usb_sndbulkpipe(udev, ep_out->bEndpointAddress);
1201 usb_fill_bulk_urb(rr3->write_urb, udev, pipe,
1202 rr3->bulk_out_buf, ep_out->wMaxPacketSize,
1203 (usb_complete_t)redrat3_write_bulk_callback, rr3);
1204
1205 mutex_init(&rr3->lock);
1206 rr3->udev = udev;
1207
1208 redrat3_reset(rr3);
1209 redrat3_get_firmware_rev(rr3);
1210
1211 /* might be all we need to do? */
1212 retval = redrat3_enable_detector(rr3);
1213 if (retval < 0)
1214 goto error;
1215
Jarod Wilsonc53f9f02011-07-13 18:26:07 -03001216 /* store current hardware timeout, in us, will use for kfifo resets */
1217 rr3->hw_timeout = redrat3_get_timeout(rr3);
1218
Jarod Wilson2154be62011-05-04 14:02:42 -03001219 /* default.. will get overridden by any sends with a freq defined */
1220 rr3->carrier = 38000;
1221
1222 rr3->rc = redrat3_init_rc_dev(rr3);
Peter Senna Tschudin6ea7cf72012-09-04 08:05:05 -03001223 if (!rr3->rc) {
1224 retval = -ENOMEM;
Jarod Wilson2154be62011-05-04 14:02:42 -03001225 goto error;
Peter Senna Tschudin6ea7cf72012-09-04 08:05:05 -03001226 }
Jarod Wilson2154be62011-05-04 14:02:42 -03001227 setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3);
1228
1229 /* we can register the device now, as it is ready */
1230 usb_set_intfdata(intf, rr3);
1231
1232 rr3_ftr(dev, "Exiting %s\n", __func__);
1233 return 0;
1234
1235error:
1236 redrat3_delete(rr3, rr3->udev);
1237
1238no_endpoints:
1239 dev_err(dev, "%s: retval = %x", __func__, retval);
1240
1241 return retval;
1242}
1243
1244static void __devexit redrat3_dev_disconnect(struct usb_interface *intf)
1245{
1246 struct usb_device *udev = interface_to_usbdev(intf);
1247 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1248
1249 rr3_ftr(&intf->dev, "Entering %s\n", __func__);
1250
1251 if (!rr3)
1252 return;
1253
1254 redrat3_disable_detector(rr3);
1255
1256 usb_set_intfdata(intf, NULL);
1257 rc_unregister_device(rr3->rc);
Jarod Wilsonc53f9f02011-07-13 18:26:07 -03001258 del_timer_sync(&rr3->rx_timeout);
Jarod Wilson2154be62011-05-04 14:02:42 -03001259 redrat3_delete(rr3, udev);
1260
1261 rr3_ftr(&intf->dev, "RedRat3 IR Transceiver now disconnected\n");
1262}
1263
1264static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message)
1265{
1266 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1267 rr3_ftr(rr3->dev, "suspend\n");
1268 usb_kill_urb(rr3->read_urb);
1269 return 0;
1270}
1271
1272static int redrat3_dev_resume(struct usb_interface *intf)
1273{
1274 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1275 rr3_ftr(rr3->dev, "resume\n");
1276 if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC))
1277 return -EIO;
1278 return 0;
1279}
1280
1281static struct usb_driver redrat3_dev_driver = {
1282 .name = DRIVER_NAME,
1283 .probe = redrat3_dev_probe,
Arnd Bergmanncd624c72012-05-03 18:22:22 -03001284 .disconnect = __devexit_p(redrat3_dev_disconnect),
Jarod Wilson2154be62011-05-04 14:02:42 -03001285 .suspend = redrat3_dev_suspend,
1286 .resume = redrat3_dev_resume,
1287 .reset_resume = redrat3_dev_resume,
1288 .id_table = redrat3_dev_table
1289};
1290
Greg Kroah-Hartmanecb3b2b2011-11-18 09:46:12 -08001291module_usb_driver(redrat3_dev_driver);
Jarod Wilson2154be62011-05-04 14:02:42 -03001292
1293MODULE_DESCRIPTION(DRIVER_DESC);
1294MODULE_AUTHOR(DRIVER_AUTHOR);
1295MODULE_AUTHOR(DRIVER_AUTHOR2);
1296MODULE_LICENSE("GPL");
1297MODULE_DEVICE_TABLE(usb, redrat3_dev_table);
1298
1299module_param(debug, int, S_IRUGO | S_IWUSR);
1300MODULE_PARM_DESC(debug, "Enable module debug spew. 0 = no debugging (default) "
1301 "0x1 = standard debug messages, 0x2 = function tracing debug. "
1302 "Flag bits are addative (i.e., 0x3 for both debug types).");