Commit | Line | Data |
---|---|---|
26ff6313 SY |
1 | /* |
2 | * IguanaWorks USB IR Transceiver support | |
3 | * | |
4 | * Copyright (C) 2012 Sean Young <sean@mess.org> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | ||
21 | #include <linux/device.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/usb.h> | |
25 | #include <linux/usb/input.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/completion.h> | |
28 | #include <media/rc-core.h> | |
29 | ||
30 | #define DRIVER_NAME "iguanair" | |
48b0fa6a | 31 | #define BUF_SIZE 152 |
26ff6313 SY |
32 | |
33 | struct iguanair { | |
34 | struct rc_dev *rc; | |
35 | ||
36 | struct device *dev; | |
37 | struct usb_device *udev; | |
38 | ||
0797b480 | 39 | uint16_t version; |
26ff6313 | 40 | uint8_t bufsize; |
48b0fa6a | 41 | uint8_t cycle_overhead; |
26ff6313 SY |
42 | |
43 | struct mutex lock; | |
44 | ||
45 | /* receiver support */ | |
46 | bool receiver_on; | |
48b0fa6a | 47 | dma_addr_t dma_in, dma_out; |
26ff6313 | 48 | uint8_t *buf_in; |
48b0fa6a | 49 | struct urb *urb_in, *urb_out; |
26ff6313 SY |
50 | struct completion completion; |
51 | ||
52 | /* transmit support */ | |
53 | bool tx_overflow; | |
54 | uint32_t carrier; | |
48b0fa6a | 55 | struct send_packet *packet; |
26ff6313 SY |
56 | |
57 | char name[64]; | |
58 | char phys[64]; | |
59 | }; | |
60 | ||
61 | #define CMD_GET_VERSION 0x01 | |
62 | #define CMD_GET_BUFSIZE 0x11 | |
63 | #define CMD_GET_FEATURES 0x10 | |
64 | #define CMD_SEND 0x15 | |
65 | #define CMD_EXECUTE 0x1f | |
66 | #define CMD_RX_OVERFLOW 0x31 | |
67 | #define CMD_TX_OVERFLOW 0x32 | |
68 | #define CMD_RECEIVER_ON 0x12 | |
69 | #define CMD_RECEIVER_OFF 0x14 | |
70 | ||
71 | #define DIR_IN 0xdc | |
72 | #define DIR_OUT 0xcd | |
73 | ||
48b0fa6a SY |
74 | #define MAX_IN_PACKET 8u |
75 | #define MAX_OUT_PACKET (sizeof(struct send_packet) + BUF_SIZE) | |
26ff6313 | 76 | #define TIMEOUT 1000 |
2eec676c | 77 | #define RX_RESOLUTION 21333 |
26ff6313 SY |
78 | |
79 | struct packet { | |
80 | uint16_t start; | |
81 | uint8_t direction; | |
82 | uint8_t cmd; | |
83 | }; | |
84 | ||
26ff6313 SY |
85 | struct send_packet { |
86 | struct packet header; | |
87 | uint8_t length; | |
88 | uint8_t channels; | |
89 | uint8_t busy7; | |
90 | uint8_t busy4; | |
91 | uint8_t payload[0]; | |
92 | }; | |
93 | ||
94 | static void process_ir_data(struct iguanair *ir, unsigned len) | |
95 | { | |
96 | if (len >= 4 && ir->buf_in[0] == 0 && ir->buf_in[1] == 0) { | |
97 | switch (ir->buf_in[3]) { | |
e99a7cfe SY |
98 | case CMD_GET_VERSION: |
99 | if (len == 6) { | |
0797b480 SY |
100 | ir->version = (ir->buf_in[5] << 8) | |
101 | ir->buf_in[4]; | |
e99a7cfe SY |
102 | complete(&ir->completion); |
103 | } | |
104 | break; | |
105 | case CMD_GET_BUFSIZE: | |
106 | if (len >= 5) { | |
107 | ir->bufsize = ir->buf_in[4]; | |
108 | complete(&ir->completion); | |
109 | } | |
110 | break; | |
111 | case CMD_GET_FEATURES: | |
112 | if (len > 5) { | |
0797b480 | 113 | ir->cycle_overhead = ir->buf_in[5]; |
e99a7cfe SY |
114 | complete(&ir->completion); |
115 | } | |
116 | break; | |
26ff6313 SY |
117 | case CMD_TX_OVERFLOW: |
118 | ir->tx_overflow = true; | |
119 | case CMD_RECEIVER_OFF: | |
120 | case CMD_RECEIVER_ON: | |
121 | case CMD_SEND: | |
122 | complete(&ir->completion); | |
123 | break; | |
124 | case CMD_RX_OVERFLOW: | |
125 | dev_warn(ir->dev, "receive overflow\n"); | |
116e4f59 | 126 | ir_raw_event_reset(ir->rc); |
26ff6313 SY |
127 | break; |
128 | default: | |
129 | dev_warn(ir->dev, "control code %02x received\n", | |
130 | ir->buf_in[3]); | |
131 | break; | |
132 | } | |
133 | } else if (len >= 7) { | |
134 | DEFINE_IR_RAW_EVENT(rawir); | |
135 | unsigned i; | |
b83bfd1b | 136 | bool event = false; |
26ff6313 SY |
137 | |
138 | init_ir_raw_event(&rawir); | |
139 | ||
140 | for (i = 0; i < 7; i++) { | |
141 | if (ir->buf_in[i] == 0x80) { | |
142 | rawir.pulse = false; | |
143 | rawir.duration = US_TO_NS(21845); | |
144 | } else { | |
145 | rawir.pulse = (ir->buf_in[i] & 0x80) == 0; | |
146 | rawir.duration = ((ir->buf_in[i] & 0x7f) + 1) * | |
2eec676c | 147 | RX_RESOLUTION; |
26ff6313 SY |
148 | } |
149 | ||
b83bfd1b SY |
150 | if (ir_raw_event_store_with_filter(ir->rc, &rawir)) |
151 | event = true; | |
26ff6313 SY |
152 | } |
153 | ||
b83bfd1b SY |
154 | if (event) |
155 | ir_raw_event_handle(ir->rc); | |
26ff6313 SY |
156 | } |
157 | } | |
158 | ||
159 | static void iguanair_rx(struct urb *urb) | |
160 | { | |
161 | struct iguanair *ir; | |
7c0bd96b | 162 | int rc; |
26ff6313 SY |
163 | |
164 | if (!urb) | |
165 | return; | |
166 | ||
167 | ir = urb->context; | |
168 | if (!ir) { | |
169 | usb_unlink_urb(urb); | |
170 | return; | |
171 | } | |
172 | ||
173 | switch (urb->status) { | |
174 | case 0: | |
175 | process_ir_data(ir, urb->actual_length); | |
176 | break; | |
177 | case -ECONNRESET: | |
178 | case -ENOENT: | |
179 | case -ESHUTDOWN: | |
180 | usb_unlink_urb(urb); | |
181 | return; | |
182 | case -EPIPE: | |
183 | default: | |
184 | dev_dbg(ir->dev, "Error: urb status = %d\n", urb->status); | |
185 | break; | |
186 | } | |
187 | ||
7c0bd96b SY |
188 | rc = usb_submit_urb(urb, GFP_ATOMIC); |
189 | if (rc && rc != -ENODEV) | |
190 | dev_warn(ir->dev, "failed to resubmit urb: %d\n", rc); | |
26ff6313 SY |
191 | } |
192 | ||
48b0fa6a | 193 | static void iguanair_irq_out(struct urb *urb) |
26ff6313 | 194 | { |
48b0fa6a SY |
195 | struct iguanair *ir = urb->context; |
196 | ||
197 | if (urb->status) | |
198 | dev_dbg(ir->dev, "Error: out urb status = %d\n", urb->status); | |
199 | } | |
200 | ||
201 | static int iguanair_send(struct iguanair *ir, unsigned size) | |
202 | { | |
203 | int rc; | |
26ff6313 | 204 | |
e99a7cfe | 205 | INIT_COMPLETION(ir->completion); |
26ff6313 | 206 | |
48b0fa6a SY |
207 | ir->urb_out->transfer_buffer_length = size; |
208 | rc = usb_submit_urb(ir->urb_out, GFP_KERNEL); | |
e99a7cfe SY |
209 | if (rc) |
210 | return rc; | |
26ff6313 | 211 | |
e99a7cfe SY |
212 | if (wait_for_completion_timeout(&ir->completion, TIMEOUT) == 0) |
213 | return -ETIMEDOUT; | |
26ff6313 SY |
214 | |
215 | return rc; | |
216 | } | |
217 | ||
218 | static int iguanair_get_features(struct iguanair *ir) | |
219 | { | |
e99a7cfe | 220 | int rc; |
26ff6313 | 221 | |
48b0fa6a SY |
222 | ir->packet->header.start = 0; |
223 | ir->packet->header.direction = DIR_OUT; | |
224 | ir->packet->header.cmd = CMD_GET_VERSION; | |
26ff6313 | 225 | |
48b0fa6a | 226 | rc = iguanair_send(ir, sizeof(ir->packet->header)); |
26ff6313 SY |
227 | if (rc) { |
228 | dev_info(ir->dev, "failed to get version\n"); | |
229 | goto out; | |
230 | } | |
231 | ||
0797b480 SY |
232 | if (ir->version < 0x205) { |
233 | dev_err(ir->dev, "firmware 0x%04x is too old\n", ir->version); | |
234 | rc = -ENODEV; | |
235 | goto out; | |
236 | } | |
237 | ||
26ff6313 SY |
238 | ir->bufsize = 150; |
239 | ir->cycle_overhead = 65; | |
240 | ||
48b0fa6a | 241 | ir->packet->header.cmd = CMD_GET_BUFSIZE; |
26ff6313 | 242 | |
48b0fa6a | 243 | rc = iguanair_send(ir, sizeof(ir->packet->header)); |
26ff6313 SY |
244 | if (rc) { |
245 | dev_info(ir->dev, "failed to get buffer size\n"); | |
246 | goto out; | |
247 | } | |
248 | ||
48b0fa6a SY |
249 | if (ir->bufsize > BUF_SIZE) { |
250 | dev_info(ir->dev, "buffer size %u larger than expected\n", | |
251 | ir->bufsize); | |
252 | ir->bufsize = BUF_SIZE; | |
253 | } | |
254 | ||
255 | ir->packet->header.cmd = CMD_GET_FEATURES; | |
26ff6313 | 256 | |
48b0fa6a | 257 | rc = iguanair_send(ir, sizeof(ir->packet->header)); |
26ff6313 SY |
258 | if (rc) { |
259 | dev_info(ir->dev, "failed to get features\n"); | |
260 | goto out; | |
261 | } | |
262 | ||
26ff6313 SY |
263 | out: |
264 | return rc; | |
265 | } | |
266 | ||
267 | static int iguanair_receiver(struct iguanair *ir, bool enable) | |
268 | { | |
48b0fa6a SY |
269 | int rc; |
270 | ||
271 | ir->packet->header.start = 0; | |
272 | ir->packet->header.direction = DIR_OUT; | |
273 | ir->packet->header.cmd = enable ? CMD_RECEIVER_ON : CMD_RECEIVER_OFF; | |
26ff6313 | 274 | |
116e4f59 SY |
275 | if (enable) |
276 | ir_raw_event_reset(ir->rc); | |
277 | ||
48b0fa6a SY |
278 | rc = iguanair_send(ir, sizeof(ir->packet->header)); |
279 | ||
280 | return rc; | |
26ff6313 SY |
281 | } |
282 | ||
283 | /* | |
284 | * The iguana ir creates the carrier by busy spinning after each pulse or | |
285 | * space. This is counted in CPU cycles, with the CPU running at 24MHz. It is | |
286 | * broken down into 7-cycles and 4-cyles delays, with a preference for | |
287 | * 4-cycle delays. | |
288 | */ | |
289 | static int iguanair_set_tx_carrier(struct rc_dev *dev, uint32_t carrier) | |
290 | { | |
291 | struct iguanair *ir = dev->priv; | |
292 | ||
293 | if (carrier < 25000 || carrier > 150000) | |
294 | return -EINVAL; | |
295 | ||
296 | mutex_lock(&ir->lock); | |
297 | ||
298 | if (carrier != ir->carrier) { | |
299 | uint32_t cycles, fours, sevens; | |
300 | ||
301 | ir->carrier = carrier; | |
302 | ||
303 | cycles = DIV_ROUND_CLOSEST(24000000, carrier * 2) - | |
304 | ir->cycle_overhead; | |
305 | ||
306 | /* make up the the remainer of 4-cycle blocks */ | |
307 | switch (cycles & 3) { | |
308 | case 0: | |
309 | sevens = 0; | |
310 | break; | |
311 | case 1: | |
312 | sevens = 3; | |
313 | break; | |
314 | case 2: | |
315 | sevens = 2; | |
316 | break; | |
317 | case 3: | |
318 | sevens = 1; | |
319 | break; | |
320 | } | |
321 | ||
322 | fours = (cycles - sevens * 7) / 4; | |
323 | ||
324 | /* magic happens here */ | |
48b0fa6a SY |
325 | ir->packet->busy7 = (4 - sevens) * 2; |
326 | ir->packet->busy4 = 110 - fours; | |
26ff6313 SY |
327 | } |
328 | ||
329 | mutex_unlock(&ir->lock); | |
330 | ||
331 | return carrier; | |
332 | } | |
333 | ||
334 | static int iguanair_set_tx_mask(struct rc_dev *dev, uint32_t mask) | |
335 | { | |
336 | struct iguanair *ir = dev->priv; | |
337 | ||
338 | if (mask > 15) | |
339 | return 4; | |
340 | ||
341 | mutex_lock(&ir->lock); | |
48b0fa6a | 342 | ir->packet->channels = mask << 4; |
26ff6313 SY |
343 | mutex_unlock(&ir->lock); |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
348 | static int iguanair_tx(struct rc_dev *dev, unsigned *txbuf, unsigned count) | |
349 | { | |
350 | struct iguanair *ir = dev->priv; | |
3920631c SY |
351 | uint8_t space; |
352 | unsigned i, size, periods, bytes; | |
353 | int rc; | |
26ff6313 SY |
354 | |
355 | mutex_lock(&ir->lock); | |
356 | ||
357 | /* convert from us to carrier periods */ | |
3920631c SY |
358 | for (i = space = size = 0; i < count; i++) { |
359 | periods = DIV_ROUND_CLOSEST(txbuf[i] * ir->carrier, 1000000); | |
360 | bytes = DIV_ROUND_UP(periods, 127); | |
884bfd08 SY |
361 | if (size + bytes > ir->bufsize) { |
362 | count = i; | |
363 | break; | |
364 | } | |
3920631c | 365 | while (periods > 127) { |
48b0fa6a | 366 | ir->packet->payload[size++] = 127 | space; |
3920631c SY |
367 | periods -= 127; |
368 | } | |
369 | ||
48b0fa6a | 370 | ir->packet->payload[size++] = periods | space; |
3920631c | 371 | space ^= 0x80; |
26ff6313 SY |
372 | } |
373 | ||
884bfd08 SY |
374 | if (count == 0) { |
375 | rc = -EINVAL; | |
26ff6313 SY |
376 | goto out; |
377 | } | |
378 | ||
48b0fa6a SY |
379 | ir->packet->header.start = 0; |
380 | ir->packet->header.direction = DIR_OUT; | |
381 | ir->packet->header.cmd = CMD_SEND; | |
382 | ir->packet->length = size; | |
26ff6313 SY |
383 | |
384 | ir->tx_overflow = false; | |
385 | ||
48b0fa6a | 386 | rc = iguanair_send(ir, sizeof(*ir->packet) + size); |
26ff6313 | 387 | |
e99a7cfe SY |
388 | if (rc == 0 && ir->tx_overflow) |
389 | rc = -EOVERFLOW; | |
26ff6313 | 390 | |
26ff6313 SY |
391 | out: |
392 | mutex_unlock(&ir->lock); | |
26ff6313 | 393 | |
884bfd08 | 394 | return rc ? rc : count; |
26ff6313 SY |
395 | } |
396 | ||
397 | static int iguanair_open(struct rc_dev *rdev) | |
398 | { | |
399 | struct iguanair *ir = rdev->priv; | |
400 | int rc; | |
401 | ||
402 | mutex_lock(&ir->lock); | |
403 | ||
26ff6313 SY |
404 | rc = iguanair_receiver(ir, true); |
405 | if (rc == 0) | |
406 | ir->receiver_on = true; | |
407 | ||
408 | mutex_unlock(&ir->lock); | |
409 | ||
410 | return rc; | |
411 | } | |
412 | ||
413 | static void iguanair_close(struct rc_dev *rdev) | |
414 | { | |
415 | struct iguanair *ir = rdev->priv; | |
416 | int rc; | |
417 | ||
418 | mutex_lock(&ir->lock); | |
419 | ||
420 | rc = iguanair_receiver(ir, false); | |
421 | ir->receiver_on = false; | |
7c0bd96b | 422 | if (rc && rc != -ENODEV) |
26ff6313 SY |
423 | dev_warn(ir->dev, "failed to disable receiver: %d\n", rc); |
424 | ||
26ff6313 SY |
425 | mutex_unlock(&ir->lock); |
426 | } | |
427 | ||
4c62e976 GKH |
428 | static int iguanair_probe(struct usb_interface *intf, |
429 | const struct usb_device_id *id) | |
26ff6313 SY |
430 | { |
431 | struct usb_device *udev = interface_to_usbdev(intf); | |
432 | struct iguanair *ir; | |
433 | struct rc_dev *rc; | |
48b0fa6a | 434 | int ret, pipein, pipeout; |
26ff6313 SY |
435 | struct usb_host_interface *idesc; |
436 | ||
437 | ir = kzalloc(sizeof(*ir), GFP_KERNEL); | |
438 | rc = rc_allocate_device(); | |
439 | if (!ir || !rc) { | |
884bfd08 | 440 | ret = -ENOMEM; |
26ff6313 SY |
441 | goto out; |
442 | } | |
443 | ||
48b0fa6a | 444 | ir->buf_in = usb_alloc_coherent(udev, MAX_IN_PACKET, GFP_KERNEL, |
26ff6313 | 445 | &ir->dma_in); |
48b0fa6a SY |
446 | ir->packet = usb_alloc_coherent(udev, MAX_OUT_PACKET, GFP_KERNEL, |
447 | &ir->dma_out); | |
26ff6313 | 448 | ir->urb_in = usb_alloc_urb(0, GFP_KERNEL); |
48b0fa6a | 449 | ir->urb_out = usb_alloc_urb(0, GFP_KERNEL); |
26ff6313 | 450 | |
48b0fa6a | 451 | if (!ir->buf_in || !ir->packet || !ir->urb_in || !ir->urb_out) { |
884bfd08 | 452 | ret = -ENOMEM; |
26ff6313 SY |
453 | goto out; |
454 | } | |
455 | ||
456 | idesc = intf->altsetting; | |
457 | ||
458 | if (idesc->desc.bNumEndpoints < 2) { | |
459 | ret = -ENODEV; | |
460 | goto out; | |
461 | } | |
462 | ||
463 | ir->rc = rc; | |
464 | ir->dev = &intf->dev; | |
465 | ir->udev = udev; | |
26ff6313 | 466 | mutex_init(&ir->lock); |
48b0fa6a | 467 | |
26ff6313 | 468 | init_completion(&ir->completion); |
48b0fa6a SY |
469 | pipeout = usb_sndintpipe(udev, |
470 | idesc->endpoint[1].desc.bEndpointAddress); | |
471 | usb_fill_int_urb(ir->urb_out, udev, pipeout, ir->packet, MAX_OUT_PACKET, | |
472 | iguanair_irq_out, ir, 1); | |
473 | ir->urb_out->transfer_dma = ir->dma_out; | |
474 | ir->urb_out->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
26ff6313 | 475 | |
e99a7cfe | 476 | pipein = usb_rcvintpipe(udev, idesc->endpoint[0].desc.bEndpointAddress); |
48b0fa6a | 477 | usb_fill_int_urb(ir->urb_in, udev, pipein, ir->buf_in, MAX_IN_PACKET, |
64058383 | 478 | iguanair_rx, ir, 1); |
26ff6313 SY |
479 | ir->urb_in->transfer_dma = ir->dma_in; |
480 | ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
481 | ||
e99a7cfe SY |
482 | ret = usb_submit_urb(ir->urb_in, GFP_KERNEL); |
483 | if (ret) { | |
484 | dev_warn(&intf->dev, "failed to submit urb: %d\n", ret); | |
485 | goto out; | |
486 | } | |
487 | ||
488 | ret = iguanair_get_features(ir); | |
489 | if (ret) | |
490 | goto out2; | |
491 | ||
26ff6313 | 492 | snprintf(ir->name, sizeof(ir->name), |
0797b480 | 493 | "IguanaWorks USB IR Transceiver version 0x%04x", ir->version); |
26ff6313 SY |
494 | |
495 | usb_make_path(ir->udev, ir->phys, sizeof(ir->phys)); | |
496 | ||
497 | rc->input_name = ir->name; | |
498 | rc->input_phys = ir->phys; | |
499 | usb_to_input_id(ir->udev, &rc->input_id); | |
500 | rc->dev.parent = &intf->dev; | |
501 | rc->driver_type = RC_DRIVER_IR_RAW; | |
c003ab1b | 502 | rc->allowed_protos = RC_BIT_ALL; |
26ff6313 SY |
503 | rc->priv = ir; |
504 | rc->open = iguanair_open; | |
505 | rc->close = iguanair_close; | |
506 | rc->s_tx_mask = iguanair_set_tx_mask; | |
507 | rc->s_tx_carrier = iguanair_set_tx_carrier; | |
508 | rc->tx_ir = iguanair_tx; | |
509 | rc->driver_name = DRIVER_NAME; | |
2eec676c SY |
510 | rc->map_name = RC_MAP_RC6_MCE; |
511 | rc->timeout = MS_TO_NS(100); | |
512 | rc->rx_resolution = RX_RESOLUTION; | |
26ff6313 SY |
513 | |
514 | iguanair_set_tx_carrier(rc, 38000); | |
515 | ||
516 | ret = rc_register_device(rc); | |
517 | if (ret < 0) { | |
518 | dev_err(&intf->dev, "failed to register rc device %d", ret); | |
e99a7cfe | 519 | goto out2; |
26ff6313 SY |
520 | } |
521 | ||
522 | usb_set_intfdata(intf, ir); | |
523 | ||
26ff6313 | 524 | return 0; |
e99a7cfe SY |
525 | out2: |
526 | usb_kill_urb(ir->urb_in); | |
48b0fa6a | 527 | usb_kill_urb(ir->urb_out); |
26ff6313 SY |
528 | out: |
529 | if (ir) { | |
530 | usb_free_urb(ir->urb_in); | |
48b0fa6a SY |
531 | usb_free_urb(ir->urb_out); |
532 | usb_free_coherent(udev, MAX_IN_PACKET, ir->buf_in, ir->dma_in); | |
533 | usb_free_coherent(udev, MAX_OUT_PACKET, ir->packet, | |
534 | ir->dma_out); | |
26ff6313 SY |
535 | } |
536 | rc_free_device(rc); | |
537 | kfree(ir); | |
538 | return ret; | |
539 | } | |
540 | ||
4c62e976 | 541 | static void iguanair_disconnect(struct usb_interface *intf) |
26ff6313 SY |
542 | { |
543 | struct iguanair *ir = usb_get_intfdata(intf); | |
544 | ||
7c0bd96b | 545 | rc_unregister_device(ir->rc); |
26ff6313 | 546 | usb_set_intfdata(intf, NULL); |
26ff6313 | 547 | usb_kill_urb(ir->urb_in); |
48b0fa6a | 548 | usb_kill_urb(ir->urb_out); |
26ff6313 | 549 | usb_free_urb(ir->urb_in); |
48b0fa6a SY |
550 | usb_free_urb(ir->urb_out); |
551 | usb_free_coherent(ir->udev, MAX_IN_PACKET, ir->buf_in, ir->dma_in); | |
552 | usb_free_coherent(ir->udev, MAX_OUT_PACKET, ir->packet, ir->dma_out); | |
26ff6313 SY |
553 | kfree(ir); |
554 | } | |
555 | ||
556 | static int iguanair_suspend(struct usb_interface *intf, pm_message_t message) | |
557 | { | |
558 | struct iguanair *ir = usb_get_intfdata(intf); | |
559 | int rc = 0; | |
560 | ||
561 | mutex_lock(&ir->lock); | |
562 | ||
563 | if (ir->receiver_on) { | |
564 | rc = iguanair_receiver(ir, false); | |
565 | if (rc) | |
566 | dev_warn(ir->dev, "failed to disable receiver for suspend\n"); | |
567 | } | |
568 | ||
7c0bd96b | 569 | usb_kill_urb(ir->urb_in); |
48b0fa6a | 570 | usb_kill_urb(ir->urb_out); |
7c0bd96b | 571 | |
26ff6313 SY |
572 | mutex_unlock(&ir->lock); |
573 | ||
574 | return rc; | |
575 | } | |
576 | ||
577 | static int iguanair_resume(struct usb_interface *intf) | |
578 | { | |
579 | struct iguanair *ir = usb_get_intfdata(intf); | |
580 | int rc = 0; | |
581 | ||
582 | mutex_lock(&ir->lock); | |
583 | ||
7c0bd96b SY |
584 | rc = usb_submit_urb(ir->urb_in, GFP_KERNEL); |
585 | if (rc) | |
586 | dev_warn(&intf->dev, "failed to submit urb: %d\n", rc); | |
587 | ||
26ff6313 SY |
588 | if (ir->receiver_on) { |
589 | rc = iguanair_receiver(ir, true); | |
590 | if (rc) | |
591 | dev_warn(ir->dev, "failed to enable receiver after resume\n"); | |
592 | } | |
593 | ||
594 | mutex_unlock(&ir->lock); | |
595 | ||
596 | return rc; | |
597 | } | |
598 | ||
599 | static const struct usb_device_id iguanair_table[] = { | |
600 | { USB_DEVICE(0x1781, 0x0938) }, | |
601 | { } | |
602 | }; | |
603 | ||
604 | static struct usb_driver iguanair_driver = { | |
605 | .name = DRIVER_NAME, | |
606 | .probe = iguanair_probe, | |
4c62e976 | 607 | .disconnect = iguanair_disconnect, |
26ff6313 SY |
608 | .suspend = iguanair_suspend, |
609 | .resume = iguanair_resume, | |
610 | .reset_resume = iguanair_resume, | |
7c0bd96b SY |
611 | .id_table = iguanair_table, |
612 | .soft_unbind = 1 /* we want to disable receiver on unbind */ | |
26ff6313 SY |
613 | }; |
614 | ||
615 | module_usb_driver(iguanair_driver); | |
616 | ||
617 | MODULE_DESCRIPTION("IguanaWorks USB IR Transceiver"); | |
618 | MODULE_AUTHOR("Sean Young <sean@mess.org>"); | |
619 | MODULE_LICENSE("GPL"); | |
620 | MODULE_DEVICE_TABLE(usb, iguanair_table); | |
621 |