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Commit | Line | Data |
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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 | ||
c6a3ea57 | 61 | #define CMD_NOP 0x00 |
26ff6313 SY |
62 | #define CMD_GET_VERSION 0x01 |
63 | #define CMD_GET_BUFSIZE 0x11 | |
64 | #define CMD_GET_FEATURES 0x10 | |
65 | #define CMD_SEND 0x15 | |
66 | #define CMD_EXECUTE 0x1f | |
67 | #define CMD_RX_OVERFLOW 0x31 | |
68 | #define CMD_TX_OVERFLOW 0x32 | |
69 | #define CMD_RECEIVER_ON 0x12 | |
70 | #define CMD_RECEIVER_OFF 0x14 | |
71 | ||
72 | #define DIR_IN 0xdc | |
73 | #define DIR_OUT 0xcd | |
74 | ||
48b0fa6a SY |
75 | #define MAX_IN_PACKET 8u |
76 | #define MAX_OUT_PACKET (sizeof(struct send_packet) + BUF_SIZE) | |
26ff6313 | 77 | #define TIMEOUT 1000 |
2eec676c | 78 | #define RX_RESOLUTION 21333 |
26ff6313 SY |
79 | |
80 | struct packet { | |
81 | uint16_t start; | |
82 | uint8_t direction; | |
83 | uint8_t cmd; | |
84 | }; | |
85 | ||
26ff6313 SY |
86 | struct send_packet { |
87 | struct packet header; | |
88 | uint8_t length; | |
89 | uint8_t channels; | |
90 | uint8_t busy7; | |
91 | uint8_t busy4; | |
92 | uint8_t payload[0]; | |
93 | }; | |
94 | ||
95 | static void process_ir_data(struct iguanair *ir, unsigned len) | |
96 | { | |
97 | if (len >= 4 && ir->buf_in[0] == 0 && ir->buf_in[1] == 0) { | |
98 | switch (ir->buf_in[3]) { | |
e99a7cfe SY |
99 | case CMD_GET_VERSION: |
100 | if (len == 6) { | |
0797b480 SY |
101 | ir->version = (ir->buf_in[5] << 8) | |
102 | ir->buf_in[4]; | |
e99a7cfe SY |
103 | complete(&ir->completion); |
104 | } | |
105 | break; | |
106 | case CMD_GET_BUFSIZE: | |
107 | if (len >= 5) { | |
108 | ir->bufsize = ir->buf_in[4]; | |
109 | complete(&ir->completion); | |
110 | } | |
111 | break; | |
112 | case CMD_GET_FEATURES: | |
113 | if (len > 5) { | |
0797b480 | 114 | ir->cycle_overhead = ir->buf_in[5]; |
e99a7cfe SY |
115 | complete(&ir->completion); |
116 | } | |
117 | break; | |
26ff6313 SY |
118 | case CMD_TX_OVERFLOW: |
119 | ir->tx_overflow = true; | |
120 | case CMD_RECEIVER_OFF: | |
121 | case CMD_RECEIVER_ON: | |
122 | case CMD_SEND: | |
123 | complete(&ir->completion); | |
124 | break; | |
125 | case CMD_RX_OVERFLOW: | |
126 | dev_warn(ir->dev, "receive overflow\n"); | |
116e4f59 | 127 | ir_raw_event_reset(ir->rc); |
26ff6313 SY |
128 | break; |
129 | default: | |
130 | dev_warn(ir->dev, "control code %02x received\n", | |
131 | ir->buf_in[3]); | |
132 | break; | |
133 | } | |
134 | } else if (len >= 7) { | |
135 | DEFINE_IR_RAW_EVENT(rawir); | |
136 | unsigned i; | |
b83bfd1b | 137 | bool event = false; |
26ff6313 SY |
138 | |
139 | init_ir_raw_event(&rawir); | |
140 | ||
141 | for (i = 0; i < 7; i++) { | |
142 | if (ir->buf_in[i] == 0x80) { | |
143 | rawir.pulse = false; | |
144 | rawir.duration = US_TO_NS(21845); | |
145 | } else { | |
146 | rawir.pulse = (ir->buf_in[i] & 0x80) == 0; | |
147 | rawir.duration = ((ir->buf_in[i] & 0x7f) + 1) * | |
2eec676c | 148 | RX_RESOLUTION; |
26ff6313 SY |
149 | } |
150 | ||
b83bfd1b SY |
151 | if (ir_raw_event_store_with_filter(ir->rc, &rawir)) |
152 | event = true; | |
26ff6313 SY |
153 | } |
154 | ||
b83bfd1b SY |
155 | if (event) |
156 | ir_raw_event_handle(ir->rc); | |
26ff6313 SY |
157 | } |
158 | } | |
159 | ||
160 | static void iguanair_rx(struct urb *urb) | |
161 | { | |
162 | struct iguanair *ir; | |
7c0bd96b | 163 | int rc; |
26ff6313 SY |
164 | |
165 | if (!urb) | |
166 | return; | |
167 | ||
168 | ir = urb->context; | |
169 | if (!ir) { | |
170 | usb_unlink_urb(urb); | |
171 | return; | |
172 | } | |
173 | ||
174 | switch (urb->status) { | |
175 | case 0: | |
176 | process_ir_data(ir, urb->actual_length); | |
177 | break; | |
178 | case -ECONNRESET: | |
179 | case -ENOENT: | |
180 | case -ESHUTDOWN: | |
181 | usb_unlink_urb(urb); | |
182 | return; | |
183 | case -EPIPE: | |
184 | default: | |
185 | dev_dbg(ir->dev, "Error: urb status = %d\n", urb->status); | |
186 | break; | |
187 | } | |
188 | ||
7c0bd96b SY |
189 | rc = usb_submit_urb(urb, GFP_ATOMIC); |
190 | if (rc && rc != -ENODEV) | |
191 | dev_warn(ir->dev, "failed to resubmit urb: %d\n", rc); | |
26ff6313 SY |
192 | } |
193 | ||
48b0fa6a | 194 | static void iguanair_irq_out(struct urb *urb) |
26ff6313 | 195 | { |
48b0fa6a SY |
196 | struct iguanair *ir = urb->context; |
197 | ||
198 | if (urb->status) | |
199 | dev_dbg(ir->dev, "Error: out urb status = %d\n", urb->status); | |
c6a3ea57 SY |
200 | |
201 | /* if we sent an nop packet, do not expect a response */ | |
202 | if (urb->status == 0 && ir->packet->header.cmd == CMD_NOP) | |
203 | complete(&ir->completion); | |
48b0fa6a SY |
204 | } |
205 | ||
206 | static int iguanair_send(struct iguanair *ir, unsigned size) | |
207 | { | |
208 | int rc; | |
26ff6313 | 209 | |
16735d02 | 210 | reinit_completion(&ir->completion); |
26ff6313 | 211 | |
48b0fa6a SY |
212 | ir->urb_out->transfer_buffer_length = size; |
213 | rc = usb_submit_urb(ir->urb_out, GFP_KERNEL); | |
e99a7cfe SY |
214 | if (rc) |
215 | return rc; | |
26ff6313 | 216 | |
e99a7cfe SY |
217 | if (wait_for_completion_timeout(&ir->completion, TIMEOUT) == 0) |
218 | return -ETIMEDOUT; | |
26ff6313 SY |
219 | |
220 | return rc; | |
221 | } | |
222 | ||
223 | static int iguanair_get_features(struct iguanair *ir) | |
224 | { | |
e99a7cfe | 225 | int rc; |
26ff6313 | 226 | |
c6a3ea57 SY |
227 | /* |
228 | * On cold boot, the iguanair initializes on the first packet | |
229 | * received but does not process that packet. Send an empty | |
230 | * packet. | |
231 | */ | |
48b0fa6a SY |
232 | ir->packet->header.start = 0; |
233 | ir->packet->header.direction = DIR_OUT; | |
c6a3ea57 SY |
234 | ir->packet->header.cmd = CMD_NOP; |
235 | iguanair_send(ir, sizeof(ir->packet->header)); | |
26ff6313 | 236 | |
c6a3ea57 | 237 | ir->packet->header.cmd = CMD_GET_VERSION; |
48b0fa6a | 238 | rc = iguanair_send(ir, sizeof(ir->packet->header)); |
26ff6313 SY |
239 | if (rc) { |
240 | dev_info(ir->dev, "failed to get version\n"); | |
241 | goto out; | |
242 | } | |
243 | ||
0797b480 SY |
244 | if (ir->version < 0x205) { |
245 | dev_err(ir->dev, "firmware 0x%04x is too old\n", ir->version); | |
246 | rc = -ENODEV; | |
247 | goto out; | |
248 | } | |
249 | ||
26ff6313 SY |
250 | ir->bufsize = 150; |
251 | ir->cycle_overhead = 65; | |
252 | ||
48b0fa6a | 253 | ir->packet->header.cmd = CMD_GET_BUFSIZE; |
26ff6313 | 254 | |
48b0fa6a | 255 | rc = iguanair_send(ir, sizeof(ir->packet->header)); |
26ff6313 SY |
256 | if (rc) { |
257 | dev_info(ir->dev, "failed to get buffer size\n"); | |
258 | goto out; | |
259 | } | |
260 | ||
48b0fa6a SY |
261 | if (ir->bufsize > BUF_SIZE) { |
262 | dev_info(ir->dev, "buffer size %u larger than expected\n", | |
263 | ir->bufsize); | |
264 | ir->bufsize = BUF_SIZE; | |
265 | } | |
266 | ||
267 | ir->packet->header.cmd = CMD_GET_FEATURES; | |
26ff6313 | 268 | |
48b0fa6a | 269 | rc = iguanair_send(ir, sizeof(ir->packet->header)); |
c6a3ea57 | 270 | if (rc) |
26ff6313 | 271 | dev_info(ir->dev, "failed to get features\n"); |
26ff6313 SY |
272 | out: |
273 | return rc; | |
274 | } | |
275 | ||
276 | static int iguanair_receiver(struct iguanair *ir, bool enable) | |
277 | { | |
48b0fa6a SY |
278 | ir->packet->header.start = 0; |
279 | ir->packet->header.direction = DIR_OUT; | |
280 | ir->packet->header.cmd = enable ? CMD_RECEIVER_ON : CMD_RECEIVER_OFF; | |
26ff6313 | 281 | |
116e4f59 SY |
282 | if (enable) |
283 | ir_raw_event_reset(ir->rc); | |
284 | ||
c6a3ea57 | 285 | return iguanair_send(ir, sizeof(ir->packet->header)); |
26ff6313 SY |
286 | } |
287 | ||
288 | /* | |
289 | * The iguana ir creates the carrier by busy spinning after each pulse or | |
290 | * space. This is counted in CPU cycles, with the CPU running at 24MHz. It is | |
291 | * broken down into 7-cycles and 4-cyles delays, with a preference for | |
292 | * 4-cycle delays. | |
293 | */ | |
294 | static int iguanair_set_tx_carrier(struct rc_dev *dev, uint32_t carrier) | |
295 | { | |
296 | struct iguanair *ir = dev->priv; | |
297 | ||
298 | if (carrier < 25000 || carrier > 150000) | |
299 | return -EINVAL; | |
300 | ||
301 | mutex_lock(&ir->lock); | |
302 | ||
303 | if (carrier != ir->carrier) { | |
304 | uint32_t cycles, fours, sevens; | |
305 | ||
306 | ir->carrier = carrier; | |
307 | ||
308 | cycles = DIV_ROUND_CLOSEST(24000000, carrier * 2) - | |
309 | ir->cycle_overhead; | |
310 | ||
311 | /* make up the the remainer of 4-cycle blocks */ | |
312 | switch (cycles & 3) { | |
313 | case 0: | |
314 | sevens = 0; | |
315 | break; | |
316 | case 1: | |
317 | sevens = 3; | |
318 | break; | |
319 | case 2: | |
320 | sevens = 2; | |
321 | break; | |
322 | case 3: | |
323 | sevens = 1; | |
324 | break; | |
325 | } | |
326 | ||
327 | fours = (cycles - sevens * 7) / 4; | |
328 | ||
329 | /* magic happens here */ | |
48b0fa6a SY |
330 | ir->packet->busy7 = (4 - sevens) * 2; |
331 | ir->packet->busy4 = 110 - fours; | |
26ff6313 SY |
332 | } |
333 | ||
334 | mutex_unlock(&ir->lock); | |
335 | ||
336 | return carrier; | |
337 | } | |
338 | ||
339 | static int iguanair_set_tx_mask(struct rc_dev *dev, uint32_t mask) | |
340 | { | |
341 | struct iguanair *ir = dev->priv; | |
342 | ||
343 | if (mask > 15) | |
344 | return 4; | |
345 | ||
346 | mutex_lock(&ir->lock); | |
48b0fa6a | 347 | ir->packet->channels = mask << 4; |
26ff6313 SY |
348 | mutex_unlock(&ir->lock); |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | static int iguanair_tx(struct rc_dev *dev, unsigned *txbuf, unsigned count) | |
354 | { | |
355 | struct iguanair *ir = dev->priv; | |
3920631c SY |
356 | uint8_t space; |
357 | unsigned i, size, periods, bytes; | |
358 | int rc; | |
26ff6313 SY |
359 | |
360 | mutex_lock(&ir->lock); | |
361 | ||
362 | /* convert from us to carrier periods */ | |
3920631c SY |
363 | for (i = space = size = 0; i < count; i++) { |
364 | periods = DIV_ROUND_CLOSEST(txbuf[i] * ir->carrier, 1000000); | |
365 | bytes = DIV_ROUND_UP(periods, 127); | |
884bfd08 | 366 | if (size + bytes > ir->bufsize) { |
671ea670 SY |
367 | rc = -EINVAL; |
368 | goto out; | |
884bfd08 | 369 | } |
3920631c | 370 | while (periods > 127) { |
48b0fa6a | 371 | ir->packet->payload[size++] = 127 | space; |
3920631c SY |
372 | periods -= 127; |
373 | } | |
374 | ||
48b0fa6a | 375 | ir->packet->payload[size++] = periods | space; |
3920631c | 376 | space ^= 0x80; |
26ff6313 SY |
377 | } |
378 | ||
884bfd08 SY |
379 | if (count == 0) { |
380 | rc = -EINVAL; | |
26ff6313 SY |
381 | goto out; |
382 | } | |
383 | ||
48b0fa6a SY |
384 | ir->packet->header.start = 0; |
385 | ir->packet->header.direction = DIR_OUT; | |
386 | ir->packet->header.cmd = CMD_SEND; | |
387 | ir->packet->length = size; | |
26ff6313 SY |
388 | |
389 | ir->tx_overflow = false; | |
390 | ||
48b0fa6a | 391 | rc = iguanair_send(ir, sizeof(*ir->packet) + size); |
26ff6313 | 392 | |
e99a7cfe SY |
393 | if (rc == 0 && ir->tx_overflow) |
394 | rc = -EOVERFLOW; | |
26ff6313 | 395 | |
26ff6313 SY |
396 | out: |
397 | mutex_unlock(&ir->lock); | |
26ff6313 | 398 | |
884bfd08 | 399 | return rc ? rc : count; |
26ff6313 SY |
400 | } |
401 | ||
402 | static int iguanair_open(struct rc_dev *rdev) | |
403 | { | |
404 | struct iguanair *ir = rdev->priv; | |
405 | int rc; | |
406 | ||
407 | mutex_lock(&ir->lock); | |
408 | ||
26ff6313 SY |
409 | rc = iguanair_receiver(ir, true); |
410 | if (rc == 0) | |
411 | ir->receiver_on = true; | |
412 | ||
413 | mutex_unlock(&ir->lock); | |
414 | ||
415 | return rc; | |
416 | } | |
417 | ||
418 | static void iguanair_close(struct rc_dev *rdev) | |
419 | { | |
420 | struct iguanair *ir = rdev->priv; | |
421 | int rc; | |
422 | ||
423 | mutex_lock(&ir->lock); | |
424 | ||
425 | rc = iguanair_receiver(ir, false); | |
426 | ir->receiver_on = false; | |
7c0bd96b | 427 | if (rc && rc != -ENODEV) |
26ff6313 SY |
428 | dev_warn(ir->dev, "failed to disable receiver: %d\n", rc); |
429 | ||
26ff6313 SY |
430 | mutex_unlock(&ir->lock); |
431 | } | |
432 | ||
4c62e976 GKH |
433 | static int iguanair_probe(struct usb_interface *intf, |
434 | const struct usb_device_id *id) | |
26ff6313 SY |
435 | { |
436 | struct usb_device *udev = interface_to_usbdev(intf); | |
437 | struct iguanair *ir; | |
438 | struct rc_dev *rc; | |
48b0fa6a | 439 | int ret, pipein, pipeout; |
26ff6313 SY |
440 | struct usb_host_interface *idesc; |
441 | ||
442 | ir = kzalloc(sizeof(*ir), GFP_KERNEL); | |
443 | rc = rc_allocate_device(); | |
444 | if (!ir || !rc) { | |
884bfd08 | 445 | ret = -ENOMEM; |
26ff6313 SY |
446 | goto out; |
447 | } | |
448 | ||
48b0fa6a | 449 | ir->buf_in = usb_alloc_coherent(udev, MAX_IN_PACKET, GFP_KERNEL, |
26ff6313 | 450 | &ir->dma_in); |
48b0fa6a SY |
451 | ir->packet = usb_alloc_coherent(udev, MAX_OUT_PACKET, GFP_KERNEL, |
452 | &ir->dma_out); | |
26ff6313 | 453 | ir->urb_in = usb_alloc_urb(0, GFP_KERNEL); |
48b0fa6a | 454 | ir->urb_out = usb_alloc_urb(0, GFP_KERNEL); |
26ff6313 | 455 | |
48b0fa6a | 456 | if (!ir->buf_in || !ir->packet || !ir->urb_in || !ir->urb_out) { |
884bfd08 | 457 | ret = -ENOMEM; |
26ff6313 SY |
458 | goto out; |
459 | } | |
460 | ||
461 | idesc = intf->altsetting; | |
462 | ||
463 | if (idesc->desc.bNumEndpoints < 2) { | |
464 | ret = -ENODEV; | |
465 | goto out; | |
466 | } | |
467 | ||
468 | ir->rc = rc; | |
469 | ir->dev = &intf->dev; | |
470 | ir->udev = udev; | |
26ff6313 | 471 | mutex_init(&ir->lock); |
48b0fa6a | 472 | |
26ff6313 | 473 | init_completion(&ir->completion); |
48b0fa6a SY |
474 | pipeout = usb_sndintpipe(udev, |
475 | idesc->endpoint[1].desc.bEndpointAddress); | |
476 | usb_fill_int_urb(ir->urb_out, udev, pipeout, ir->packet, MAX_OUT_PACKET, | |
477 | iguanair_irq_out, ir, 1); | |
478 | ir->urb_out->transfer_dma = ir->dma_out; | |
479 | ir->urb_out->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
26ff6313 | 480 | |
e99a7cfe | 481 | pipein = usb_rcvintpipe(udev, idesc->endpoint[0].desc.bEndpointAddress); |
48b0fa6a | 482 | usb_fill_int_urb(ir->urb_in, udev, pipein, ir->buf_in, MAX_IN_PACKET, |
64058383 | 483 | iguanair_rx, ir, 1); |
26ff6313 SY |
484 | ir->urb_in->transfer_dma = ir->dma_in; |
485 | ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
486 | ||
e99a7cfe SY |
487 | ret = usb_submit_urb(ir->urb_in, GFP_KERNEL); |
488 | if (ret) { | |
489 | dev_warn(&intf->dev, "failed to submit urb: %d\n", ret); | |
490 | goto out; | |
491 | } | |
492 | ||
493 | ret = iguanair_get_features(ir); | |
494 | if (ret) | |
495 | goto out2; | |
496 | ||
26ff6313 | 497 | snprintf(ir->name, sizeof(ir->name), |
0797b480 | 498 | "IguanaWorks USB IR Transceiver version 0x%04x", ir->version); |
26ff6313 SY |
499 | |
500 | usb_make_path(ir->udev, ir->phys, sizeof(ir->phys)); | |
501 | ||
502 | rc->input_name = ir->name; | |
503 | rc->input_phys = ir->phys; | |
504 | usb_to_input_id(ir->udev, &rc->input_id); | |
505 | rc->dev.parent = &intf->dev; | |
506 | rc->driver_type = RC_DRIVER_IR_RAW; | |
c003ab1b | 507 | rc->allowed_protos = RC_BIT_ALL; |
26ff6313 SY |
508 | rc->priv = ir; |
509 | rc->open = iguanair_open; | |
510 | rc->close = iguanair_close; | |
511 | rc->s_tx_mask = iguanair_set_tx_mask; | |
512 | rc->s_tx_carrier = iguanair_set_tx_carrier; | |
513 | rc->tx_ir = iguanair_tx; | |
514 | rc->driver_name = DRIVER_NAME; | |
2eec676c SY |
515 | rc->map_name = RC_MAP_RC6_MCE; |
516 | rc->timeout = MS_TO_NS(100); | |
517 | rc->rx_resolution = RX_RESOLUTION; | |
26ff6313 SY |
518 | |
519 | iguanair_set_tx_carrier(rc, 38000); | |
d0aab656 | 520 | iguanair_set_tx_mask(rc, 0); |
26ff6313 SY |
521 | |
522 | ret = rc_register_device(rc); | |
523 | if (ret < 0) { | |
524 | dev_err(&intf->dev, "failed to register rc device %d", ret); | |
e99a7cfe | 525 | goto out2; |
26ff6313 SY |
526 | } |
527 | ||
528 | usb_set_intfdata(intf, ir); | |
529 | ||
26ff6313 | 530 | return 0; |
e99a7cfe SY |
531 | out2: |
532 | usb_kill_urb(ir->urb_in); | |
48b0fa6a | 533 | usb_kill_urb(ir->urb_out); |
26ff6313 SY |
534 | out: |
535 | if (ir) { | |
536 | usb_free_urb(ir->urb_in); | |
48b0fa6a SY |
537 | usb_free_urb(ir->urb_out); |
538 | usb_free_coherent(udev, MAX_IN_PACKET, ir->buf_in, ir->dma_in); | |
539 | usb_free_coherent(udev, MAX_OUT_PACKET, ir->packet, | |
540 | ir->dma_out); | |
26ff6313 SY |
541 | } |
542 | rc_free_device(rc); | |
543 | kfree(ir); | |
544 | return ret; | |
545 | } | |
546 | ||
4c62e976 | 547 | static void iguanair_disconnect(struct usb_interface *intf) |
26ff6313 SY |
548 | { |
549 | struct iguanair *ir = usb_get_intfdata(intf); | |
550 | ||
7c0bd96b | 551 | rc_unregister_device(ir->rc); |
26ff6313 | 552 | usb_set_intfdata(intf, NULL); |
26ff6313 | 553 | usb_kill_urb(ir->urb_in); |
48b0fa6a | 554 | usb_kill_urb(ir->urb_out); |
26ff6313 | 555 | usb_free_urb(ir->urb_in); |
48b0fa6a SY |
556 | usb_free_urb(ir->urb_out); |
557 | usb_free_coherent(ir->udev, MAX_IN_PACKET, ir->buf_in, ir->dma_in); | |
558 | usb_free_coherent(ir->udev, MAX_OUT_PACKET, ir->packet, ir->dma_out); | |
26ff6313 SY |
559 | kfree(ir); |
560 | } | |
561 | ||
562 | static int iguanair_suspend(struct usb_interface *intf, pm_message_t message) | |
563 | { | |
564 | struct iguanair *ir = usb_get_intfdata(intf); | |
565 | int rc = 0; | |
566 | ||
567 | mutex_lock(&ir->lock); | |
568 | ||
569 | if (ir->receiver_on) { | |
570 | rc = iguanair_receiver(ir, false); | |
571 | if (rc) | |
572 | dev_warn(ir->dev, "failed to disable receiver for suspend\n"); | |
573 | } | |
574 | ||
7c0bd96b | 575 | usb_kill_urb(ir->urb_in); |
48b0fa6a | 576 | usb_kill_urb(ir->urb_out); |
7c0bd96b | 577 | |
26ff6313 SY |
578 | mutex_unlock(&ir->lock); |
579 | ||
580 | return rc; | |
581 | } | |
582 | ||
583 | static int iguanair_resume(struct usb_interface *intf) | |
584 | { | |
585 | struct iguanair *ir = usb_get_intfdata(intf); | |
586 | int rc = 0; | |
587 | ||
588 | mutex_lock(&ir->lock); | |
589 | ||
7c0bd96b SY |
590 | rc = usb_submit_urb(ir->urb_in, GFP_KERNEL); |
591 | if (rc) | |
592 | dev_warn(&intf->dev, "failed to submit urb: %d\n", rc); | |
593 | ||
26ff6313 SY |
594 | if (ir->receiver_on) { |
595 | rc = iguanair_receiver(ir, true); | |
596 | if (rc) | |
597 | dev_warn(ir->dev, "failed to enable receiver after resume\n"); | |
598 | } | |
599 | ||
600 | mutex_unlock(&ir->lock); | |
601 | ||
602 | return rc; | |
603 | } | |
604 | ||
605 | static const struct usb_device_id iguanair_table[] = { | |
606 | { USB_DEVICE(0x1781, 0x0938) }, | |
607 | { } | |
608 | }; | |
609 | ||
610 | static struct usb_driver iguanair_driver = { | |
611 | .name = DRIVER_NAME, | |
612 | .probe = iguanair_probe, | |
4c62e976 | 613 | .disconnect = iguanair_disconnect, |
26ff6313 SY |
614 | .suspend = iguanair_suspend, |
615 | .resume = iguanair_resume, | |
616 | .reset_resume = iguanair_resume, | |
7c0bd96b SY |
617 | .id_table = iguanair_table, |
618 | .soft_unbind = 1 /* we want to disable receiver on unbind */ | |
26ff6313 SY |
619 | }; |
620 | ||
621 | module_usb_driver(iguanair_driver); | |
622 | ||
623 | MODULE_DESCRIPTION("IguanaWorks USB IR Transceiver"); | |
624 | MODULE_AUTHOR("Sean Young <sean@mess.org>"); | |
625 | MODULE_LICENSE("GPL"); | |
626 | MODULE_DEVICE_TABLE(usb, iguanair_table); | |
627 |