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. | |
26ff6313 SY |
15 | */ |
16 | ||
17 | #include <linux/device.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/usb.h> | |
21 | #include <linux/usb/input.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/completion.h> | |
24 | #include <media/rc-core.h> | |
25 | ||
26 | #define DRIVER_NAME "iguanair" | |
48b0fa6a | 27 | #define BUF_SIZE 152 |
26ff6313 SY |
28 | |
29 | struct iguanair { | |
30 | struct rc_dev *rc; | |
31 | ||
32 | struct device *dev; | |
33 | struct usb_device *udev; | |
34 | ||
0797b480 | 35 | uint16_t version; |
26ff6313 | 36 | uint8_t bufsize; |
48b0fa6a | 37 | uint8_t cycle_overhead; |
26ff6313 SY |
38 | |
39 | struct mutex lock; | |
40 | ||
41 | /* receiver support */ | |
42 | bool receiver_on; | |
48b0fa6a | 43 | dma_addr_t dma_in, dma_out; |
26ff6313 | 44 | uint8_t *buf_in; |
48b0fa6a | 45 | struct urb *urb_in, *urb_out; |
26ff6313 SY |
46 | struct completion completion; |
47 | ||
48 | /* transmit support */ | |
49 | bool tx_overflow; | |
50 | uint32_t carrier; | |
48b0fa6a | 51 | struct send_packet *packet; |
26ff6313 SY |
52 | |
53 | char name[64]; | |
54 | char phys[64]; | |
55 | }; | |
56 | ||
c6a3ea57 | 57 | #define CMD_NOP 0x00 |
26ff6313 SY |
58 | #define CMD_GET_VERSION 0x01 |
59 | #define CMD_GET_BUFSIZE 0x11 | |
60 | #define CMD_GET_FEATURES 0x10 | |
61 | #define CMD_SEND 0x15 | |
62 | #define CMD_EXECUTE 0x1f | |
63 | #define CMD_RX_OVERFLOW 0x31 | |
64 | #define CMD_TX_OVERFLOW 0x32 | |
65 | #define CMD_RECEIVER_ON 0x12 | |
66 | #define CMD_RECEIVER_OFF 0x14 | |
67 | ||
68 | #define DIR_IN 0xdc | |
69 | #define DIR_OUT 0xcd | |
70 | ||
48b0fa6a SY |
71 | #define MAX_IN_PACKET 8u |
72 | #define MAX_OUT_PACKET (sizeof(struct send_packet) + BUF_SIZE) | |
26ff6313 | 73 | #define TIMEOUT 1000 |
2eec676c | 74 | #define RX_RESOLUTION 21333 |
26ff6313 SY |
75 | |
76 | struct packet { | |
77 | uint16_t start; | |
78 | uint8_t direction; | |
79 | uint8_t cmd; | |
80 | }; | |
81 | ||
26ff6313 SY |
82 | struct send_packet { |
83 | struct packet header; | |
84 | uint8_t length; | |
85 | uint8_t channels; | |
86 | uint8_t busy7; | |
87 | uint8_t busy4; | |
88 | uint8_t payload[0]; | |
89 | }; | |
90 | ||
91 | static void process_ir_data(struct iguanair *ir, unsigned len) | |
92 | { | |
93 | if (len >= 4 && ir->buf_in[0] == 0 && ir->buf_in[1] == 0) { | |
94 | switch (ir->buf_in[3]) { | |
e99a7cfe SY |
95 | case CMD_GET_VERSION: |
96 | if (len == 6) { | |
0797b480 SY |
97 | ir->version = (ir->buf_in[5] << 8) | |
98 | ir->buf_in[4]; | |
e99a7cfe SY |
99 | complete(&ir->completion); |
100 | } | |
101 | break; | |
102 | case CMD_GET_BUFSIZE: | |
103 | if (len >= 5) { | |
104 | ir->bufsize = ir->buf_in[4]; | |
105 | complete(&ir->completion); | |
106 | } | |
107 | break; | |
108 | case CMD_GET_FEATURES: | |
109 | if (len > 5) { | |
0797b480 | 110 | ir->cycle_overhead = ir->buf_in[5]; |
e99a7cfe SY |
111 | complete(&ir->completion); |
112 | } | |
113 | break; | |
26ff6313 SY |
114 | case CMD_TX_OVERFLOW: |
115 | ir->tx_overflow = true; | |
06eeefe8 | 116 | /* fall through */ |
26ff6313 SY |
117 | case CMD_RECEIVER_OFF: |
118 | case CMD_RECEIVER_ON: | |
119 | case CMD_SEND: | |
120 | complete(&ir->completion); | |
121 | break; | |
122 | case CMD_RX_OVERFLOW: | |
123 | dev_warn(ir->dev, "receive overflow\n"); | |
116e4f59 | 124 | ir_raw_event_reset(ir->rc); |
26ff6313 SY |
125 | break; |
126 | default: | |
127 | dev_warn(ir->dev, "control code %02x received\n", | |
128 | ir->buf_in[3]); | |
129 | break; | |
130 | } | |
131 | } else if (len >= 7) { | |
132 | DEFINE_IR_RAW_EVENT(rawir); | |
133 | unsigned i; | |
b83bfd1b | 134 | bool event = false; |
26ff6313 SY |
135 | |
136 | init_ir_raw_event(&rawir); | |
137 | ||
138 | for (i = 0; i < 7; i++) { | |
139 | if (ir->buf_in[i] == 0x80) { | |
140 | rawir.pulse = false; | |
141 | rawir.duration = US_TO_NS(21845); | |
142 | } else { | |
143 | rawir.pulse = (ir->buf_in[i] & 0x80) == 0; | |
144 | rawir.duration = ((ir->buf_in[i] & 0x7f) + 1) * | |
2eec676c | 145 | RX_RESOLUTION; |
26ff6313 SY |
146 | } |
147 | ||
b83bfd1b SY |
148 | if (ir_raw_event_store_with_filter(ir->rc, &rawir)) |
149 | event = true; | |
26ff6313 SY |
150 | } |
151 | ||
b83bfd1b SY |
152 | if (event) |
153 | ir_raw_event_handle(ir->rc); | |
26ff6313 SY |
154 | } |
155 | } | |
156 | ||
157 | static void iguanair_rx(struct urb *urb) | |
158 | { | |
159 | struct iguanair *ir; | |
7c0bd96b | 160 | int rc; |
26ff6313 SY |
161 | |
162 | if (!urb) | |
163 | return; | |
164 | ||
165 | ir = urb->context; | |
166 | if (!ir) { | |
167 | usb_unlink_urb(urb); | |
168 | return; | |
169 | } | |
170 | ||
171 | switch (urb->status) { | |
172 | case 0: | |
173 | process_ir_data(ir, urb->actual_length); | |
174 | break; | |
175 | case -ECONNRESET: | |
176 | case -ENOENT: | |
177 | case -ESHUTDOWN: | |
178 | usb_unlink_urb(urb); | |
179 | return; | |
180 | case -EPIPE: | |
181 | default: | |
182 | dev_dbg(ir->dev, "Error: urb status = %d\n", urb->status); | |
183 | break; | |
184 | } | |
185 | ||
7c0bd96b SY |
186 | rc = usb_submit_urb(urb, GFP_ATOMIC); |
187 | if (rc && rc != -ENODEV) | |
188 | dev_warn(ir->dev, "failed to resubmit urb: %d\n", rc); | |
26ff6313 SY |
189 | } |
190 | ||
48b0fa6a | 191 | static void iguanair_irq_out(struct urb *urb) |
26ff6313 | 192 | { |
48b0fa6a SY |
193 | struct iguanair *ir = urb->context; |
194 | ||
195 | if (urb->status) | |
196 | dev_dbg(ir->dev, "Error: out urb status = %d\n", urb->status); | |
c6a3ea57 SY |
197 | |
198 | /* if we sent an nop packet, do not expect a response */ | |
199 | if (urb->status == 0 && ir->packet->header.cmd == CMD_NOP) | |
200 | complete(&ir->completion); | |
48b0fa6a SY |
201 | } |
202 | ||
203 | static int iguanair_send(struct iguanair *ir, unsigned size) | |
204 | { | |
205 | int rc; | |
26ff6313 | 206 | |
16735d02 | 207 | reinit_completion(&ir->completion); |
26ff6313 | 208 | |
48b0fa6a SY |
209 | ir->urb_out->transfer_buffer_length = size; |
210 | rc = usb_submit_urb(ir->urb_out, GFP_KERNEL); | |
e99a7cfe SY |
211 | if (rc) |
212 | return rc; | |
26ff6313 | 213 | |
e99a7cfe SY |
214 | if (wait_for_completion_timeout(&ir->completion, TIMEOUT) == 0) |
215 | return -ETIMEDOUT; | |
26ff6313 SY |
216 | |
217 | return rc; | |
218 | } | |
219 | ||
220 | static int iguanair_get_features(struct iguanair *ir) | |
221 | { | |
e99a7cfe | 222 | int rc; |
26ff6313 | 223 | |
c6a3ea57 SY |
224 | /* |
225 | * On cold boot, the iguanair initializes on the first packet | |
226 | * received but does not process that packet. Send an empty | |
227 | * packet. | |
228 | */ | |
48b0fa6a SY |
229 | ir->packet->header.start = 0; |
230 | ir->packet->header.direction = DIR_OUT; | |
c6a3ea57 SY |
231 | ir->packet->header.cmd = CMD_NOP; |
232 | iguanair_send(ir, sizeof(ir->packet->header)); | |
26ff6313 | 233 | |
c6a3ea57 | 234 | ir->packet->header.cmd = CMD_GET_VERSION; |
48b0fa6a | 235 | rc = iguanair_send(ir, sizeof(ir->packet->header)); |
26ff6313 SY |
236 | if (rc) { |
237 | dev_info(ir->dev, "failed to get version\n"); | |
238 | goto out; | |
239 | } | |
240 | ||
0797b480 SY |
241 | if (ir->version < 0x205) { |
242 | dev_err(ir->dev, "firmware 0x%04x is too old\n", ir->version); | |
243 | rc = -ENODEV; | |
244 | goto out; | |
245 | } | |
246 | ||
26ff6313 SY |
247 | ir->bufsize = 150; |
248 | ir->cycle_overhead = 65; | |
249 | ||
48b0fa6a | 250 | ir->packet->header.cmd = CMD_GET_BUFSIZE; |
26ff6313 | 251 | |
48b0fa6a | 252 | rc = iguanair_send(ir, sizeof(ir->packet->header)); |
26ff6313 SY |
253 | if (rc) { |
254 | dev_info(ir->dev, "failed to get buffer size\n"); | |
255 | goto out; | |
256 | } | |
257 | ||
48b0fa6a SY |
258 | if (ir->bufsize > BUF_SIZE) { |
259 | dev_info(ir->dev, "buffer size %u larger than expected\n", | |
260 | ir->bufsize); | |
261 | ir->bufsize = BUF_SIZE; | |
262 | } | |
263 | ||
264 | ir->packet->header.cmd = CMD_GET_FEATURES; | |
26ff6313 | 265 | |
48b0fa6a | 266 | rc = iguanair_send(ir, sizeof(ir->packet->header)); |
c6a3ea57 | 267 | if (rc) |
26ff6313 | 268 | dev_info(ir->dev, "failed to get features\n"); |
26ff6313 SY |
269 | out: |
270 | return rc; | |
271 | } | |
272 | ||
273 | static int iguanair_receiver(struct iguanair *ir, bool enable) | |
274 | { | |
48b0fa6a SY |
275 | ir->packet->header.start = 0; |
276 | ir->packet->header.direction = DIR_OUT; | |
277 | ir->packet->header.cmd = enable ? CMD_RECEIVER_ON : CMD_RECEIVER_OFF; | |
26ff6313 | 278 | |
116e4f59 SY |
279 | if (enable) |
280 | ir_raw_event_reset(ir->rc); | |
281 | ||
c6a3ea57 | 282 | return iguanair_send(ir, sizeof(ir->packet->header)); |
26ff6313 SY |
283 | } |
284 | ||
285 | /* | |
dd3a5a1e SY |
286 | * The iguanair creates the carrier by busy spinning after each half period. |
287 | * This is counted in CPU cycles, with the CPU running at 24MHz. It is | |
26ff6313 | 288 | * broken down into 7-cycles and 4-cyles delays, with a preference for |
dd3a5a1e | 289 | * 4-cycle delays, minus the overhead of the loop itself (cycle_overhead). |
26ff6313 SY |
290 | */ |
291 | static int iguanair_set_tx_carrier(struct rc_dev *dev, uint32_t carrier) | |
292 | { | |
293 | struct iguanair *ir = dev->priv; | |
294 | ||
295 | if (carrier < 25000 || carrier > 150000) | |
296 | return -EINVAL; | |
297 | ||
298 | mutex_lock(&ir->lock); | |
299 | ||
300 | if (carrier != ir->carrier) { | |
301 | uint32_t cycles, fours, sevens; | |
302 | ||
303 | ir->carrier = carrier; | |
304 | ||
305 | cycles = DIV_ROUND_CLOSEST(24000000, carrier * 2) - | |
306 | ir->cycle_overhead; | |
307 | ||
9bd766b7 SY |
308 | /* |
309 | * Calculate minimum number of 7 cycles needed so | |
310 | * we are left with a multiple of 4; so we want to have | |
311 | * (sevens * 7) & 3 == cycles & 3 | |
312 | */ | |
313 | sevens = (4 - cycles) & 3; | |
26ff6313 SY |
314 | fours = (cycles - sevens * 7) / 4; |
315 | ||
dd3a5a1e SY |
316 | /* |
317 | * The firmware interprets these values as a relative offset | |
318 | * for a branch. Immediately following the branches, there | |
319 | * 4 instructions of 7 cycles (2 bytes each) and 110 | |
320 | * instructions of 4 cycles (1 byte each). A relative branch | |
321 | * of 0 will execute all of them, branch further for less | |
322 | * cycle burning. | |
323 | */ | |
48b0fa6a SY |
324 | ir->packet->busy7 = (4 - sevens) * 2; |
325 | ir->packet->busy4 = 110 - fours; | |
26ff6313 SY |
326 | } |
327 | ||
328 | mutex_unlock(&ir->lock); | |
329 | ||
14d8188a | 330 | return 0; |
26ff6313 SY |
331 | } |
332 | ||
333 | static int iguanair_set_tx_mask(struct rc_dev *dev, uint32_t mask) | |
334 | { | |
335 | struct iguanair *ir = dev->priv; | |
336 | ||
337 | if (mask > 15) | |
338 | return 4; | |
339 | ||
340 | mutex_lock(&ir->lock); | |
48b0fa6a | 341 | ir->packet->channels = mask << 4; |
26ff6313 SY |
342 | mutex_unlock(&ir->lock); |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
347 | static int iguanair_tx(struct rc_dev *dev, unsigned *txbuf, unsigned count) | |
348 | { | |
349 | struct iguanair *ir = dev->priv; | |
b996157d | 350 | unsigned int i, size, p, periods; |
3920631c | 351 | int rc; |
26ff6313 SY |
352 | |
353 | mutex_lock(&ir->lock); | |
354 | ||
355 | /* convert from us to carrier periods */ | |
b996157d | 356 | for (i = size = 0; i < count; i++) { |
3920631c | 357 | periods = DIV_ROUND_CLOSEST(txbuf[i] * ir->carrier, 1000000); |
776eced0 | 358 | while (periods) { |
b996157d SY |
359 | p = min(periods, 127u); |
360 | if (size >= ir->bufsize) { | |
361 | rc = -EINVAL; | |
362 | goto out; | |
363 | } | |
364 | ir->packet->payload[size++] = p | ((i & 1) ? 0x80 : 0); | |
776eced0 | 365 | periods -= p; |
3920631c | 366 | } |
26ff6313 SY |
367 | } |
368 | ||
48b0fa6a SY |
369 | ir->packet->header.start = 0; |
370 | ir->packet->header.direction = DIR_OUT; | |
371 | ir->packet->header.cmd = CMD_SEND; | |
372 | ir->packet->length = size; | |
26ff6313 SY |
373 | |
374 | ir->tx_overflow = false; | |
375 | ||
48b0fa6a | 376 | rc = iguanair_send(ir, sizeof(*ir->packet) + size); |
26ff6313 | 377 | |
e99a7cfe SY |
378 | if (rc == 0 && ir->tx_overflow) |
379 | rc = -EOVERFLOW; | |
26ff6313 | 380 | |
26ff6313 SY |
381 | out: |
382 | mutex_unlock(&ir->lock); | |
26ff6313 | 383 | |
884bfd08 | 384 | return rc ? rc : count; |
26ff6313 SY |
385 | } |
386 | ||
387 | static int iguanair_open(struct rc_dev *rdev) | |
388 | { | |
389 | struct iguanair *ir = rdev->priv; | |
390 | int rc; | |
391 | ||
392 | mutex_lock(&ir->lock); | |
393 | ||
26ff6313 SY |
394 | rc = iguanair_receiver(ir, true); |
395 | if (rc == 0) | |
396 | ir->receiver_on = true; | |
397 | ||
398 | mutex_unlock(&ir->lock); | |
399 | ||
400 | return rc; | |
401 | } | |
402 | ||
403 | static void iguanair_close(struct rc_dev *rdev) | |
404 | { | |
405 | struct iguanair *ir = rdev->priv; | |
406 | int rc; | |
407 | ||
408 | mutex_lock(&ir->lock); | |
409 | ||
410 | rc = iguanair_receiver(ir, false); | |
411 | ir->receiver_on = false; | |
7c0bd96b | 412 | if (rc && rc != -ENODEV) |
26ff6313 SY |
413 | dev_warn(ir->dev, "failed to disable receiver: %d\n", rc); |
414 | ||
26ff6313 SY |
415 | mutex_unlock(&ir->lock); |
416 | } | |
417 | ||
4c62e976 GKH |
418 | static int iguanair_probe(struct usb_interface *intf, |
419 | const struct usb_device_id *id) | |
26ff6313 SY |
420 | { |
421 | struct usb_device *udev = interface_to_usbdev(intf); | |
422 | struct iguanair *ir; | |
423 | struct rc_dev *rc; | |
48b0fa6a | 424 | int ret, pipein, pipeout; |
26ff6313 SY |
425 | struct usb_host_interface *idesc; |
426 | ||
427 | ir = kzalloc(sizeof(*ir), GFP_KERNEL); | |
0f7499fd | 428 | rc = rc_allocate_device(RC_DRIVER_IR_RAW); |
26ff6313 | 429 | if (!ir || !rc) { |
884bfd08 | 430 | ret = -ENOMEM; |
26ff6313 SY |
431 | goto out; |
432 | } | |
433 | ||
48b0fa6a | 434 | ir->buf_in = usb_alloc_coherent(udev, MAX_IN_PACKET, GFP_KERNEL, |
26ff6313 | 435 | &ir->dma_in); |
48b0fa6a SY |
436 | ir->packet = usb_alloc_coherent(udev, MAX_OUT_PACKET, GFP_KERNEL, |
437 | &ir->dma_out); | |
26ff6313 | 438 | ir->urb_in = usb_alloc_urb(0, GFP_KERNEL); |
48b0fa6a | 439 | ir->urb_out = usb_alloc_urb(0, GFP_KERNEL); |
26ff6313 | 440 | |
48b0fa6a | 441 | if (!ir->buf_in || !ir->packet || !ir->urb_in || !ir->urb_out) { |
884bfd08 | 442 | ret = -ENOMEM; |
26ff6313 SY |
443 | goto out; |
444 | } | |
445 | ||
446 | idesc = intf->altsetting; | |
447 | ||
448 | if (idesc->desc.bNumEndpoints < 2) { | |
449 | ret = -ENODEV; | |
450 | goto out; | |
451 | } | |
452 | ||
453 | ir->rc = rc; | |
454 | ir->dev = &intf->dev; | |
455 | ir->udev = udev; | |
26ff6313 | 456 | mutex_init(&ir->lock); |
48b0fa6a | 457 | |
26ff6313 | 458 | init_completion(&ir->completion); |
48b0fa6a SY |
459 | pipeout = usb_sndintpipe(udev, |
460 | idesc->endpoint[1].desc.bEndpointAddress); | |
461 | usb_fill_int_urb(ir->urb_out, udev, pipeout, ir->packet, MAX_OUT_PACKET, | |
462 | iguanair_irq_out, ir, 1); | |
463 | ir->urb_out->transfer_dma = ir->dma_out; | |
464 | ir->urb_out->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
26ff6313 | 465 | |
e99a7cfe | 466 | pipein = usb_rcvintpipe(udev, idesc->endpoint[0].desc.bEndpointAddress); |
48b0fa6a | 467 | usb_fill_int_urb(ir->urb_in, udev, pipein, ir->buf_in, MAX_IN_PACKET, |
64058383 | 468 | iguanair_rx, ir, 1); |
26ff6313 SY |
469 | ir->urb_in->transfer_dma = ir->dma_in; |
470 | ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
471 | ||
e99a7cfe SY |
472 | ret = usb_submit_urb(ir->urb_in, GFP_KERNEL); |
473 | if (ret) { | |
474 | dev_warn(&intf->dev, "failed to submit urb: %d\n", ret); | |
475 | goto out; | |
476 | } | |
477 | ||
478 | ret = iguanair_get_features(ir); | |
479 | if (ret) | |
480 | goto out2; | |
481 | ||
26ff6313 | 482 | snprintf(ir->name, sizeof(ir->name), |
0797b480 | 483 | "IguanaWorks USB IR Transceiver version 0x%04x", ir->version); |
26ff6313 SY |
484 | |
485 | usb_make_path(ir->udev, ir->phys, sizeof(ir->phys)); | |
486 | ||
518f4b26 | 487 | rc->device_name = ir->name; |
26ff6313 SY |
488 | rc->input_phys = ir->phys; |
489 | usb_to_input_id(ir->udev, &rc->input_id); | |
490 | rc->dev.parent = &intf->dev; | |
6d741bfe | 491 | rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER; |
26ff6313 SY |
492 | rc->priv = ir; |
493 | rc->open = iguanair_open; | |
494 | rc->close = iguanair_close; | |
495 | rc->s_tx_mask = iguanair_set_tx_mask; | |
496 | rc->s_tx_carrier = iguanair_set_tx_carrier; | |
497 | rc->tx_ir = iguanair_tx; | |
498 | rc->driver_name = DRIVER_NAME; | |
2eec676c | 499 | rc->map_name = RC_MAP_RC6_MCE; |
56a6036c SY |
500 | rc->min_timeout = 1; |
501 | rc->timeout = IR_DEFAULT_TIMEOUT; | |
502 | rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT; | |
2eec676c | 503 | rc->rx_resolution = RX_RESOLUTION; |
26ff6313 SY |
504 | |
505 | iguanair_set_tx_carrier(rc, 38000); | |
d0aab656 | 506 | iguanair_set_tx_mask(rc, 0); |
26ff6313 SY |
507 | |
508 | ret = rc_register_device(rc); | |
509 | if (ret < 0) { | |
510 | dev_err(&intf->dev, "failed to register rc device %d", ret); | |
e99a7cfe | 511 | goto out2; |
26ff6313 SY |
512 | } |
513 | ||
514 | usb_set_intfdata(intf, ir); | |
515 | ||
26ff6313 | 516 | return 0; |
e99a7cfe SY |
517 | out2: |
518 | usb_kill_urb(ir->urb_in); | |
48b0fa6a | 519 | usb_kill_urb(ir->urb_out); |
26ff6313 SY |
520 | out: |
521 | if (ir) { | |
522 | usb_free_urb(ir->urb_in); | |
48b0fa6a SY |
523 | usb_free_urb(ir->urb_out); |
524 | usb_free_coherent(udev, MAX_IN_PACKET, ir->buf_in, ir->dma_in); | |
525 | usb_free_coherent(udev, MAX_OUT_PACKET, ir->packet, | |
526 | ir->dma_out); | |
26ff6313 SY |
527 | } |
528 | rc_free_device(rc); | |
529 | kfree(ir); | |
530 | return ret; | |
531 | } | |
532 | ||
4c62e976 | 533 | static void iguanair_disconnect(struct usb_interface *intf) |
26ff6313 SY |
534 | { |
535 | struct iguanair *ir = usb_get_intfdata(intf); | |
536 | ||
7c0bd96b | 537 | rc_unregister_device(ir->rc); |
26ff6313 | 538 | usb_set_intfdata(intf, NULL); |
26ff6313 | 539 | usb_kill_urb(ir->urb_in); |
48b0fa6a | 540 | usb_kill_urb(ir->urb_out); |
26ff6313 | 541 | usb_free_urb(ir->urb_in); |
48b0fa6a SY |
542 | usb_free_urb(ir->urb_out); |
543 | usb_free_coherent(ir->udev, MAX_IN_PACKET, ir->buf_in, ir->dma_in); | |
544 | usb_free_coherent(ir->udev, MAX_OUT_PACKET, ir->packet, ir->dma_out); | |
26ff6313 SY |
545 | kfree(ir); |
546 | } | |
547 | ||
548 | static int iguanair_suspend(struct usb_interface *intf, pm_message_t message) | |
549 | { | |
550 | struct iguanair *ir = usb_get_intfdata(intf); | |
551 | int rc = 0; | |
552 | ||
553 | mutex_lock(&ir->lock); | |
554 | ||
555 | if (ir->receiver_on) { | |
556 | rc = iguanair_receiver(ir, false); | |
557 | if (rc) | |
558 | dev_warn(ir->dev, "failed to disable receiver for suspend\n"); | |
559 | } | |
560 | ||
7c0bd96b | 561 | usb_kill_urb(ir->urb_in); |
48b0fa6a | 562 | usb_kill_urb(ir->urb_out); |
7c0bd96b | 563 | |
26ff6313 SY |
564 | mutex_unlock(&ir->lock); |
565 | ||
566 | return rc; | |
567 | } | |
568 | ||
569 | static int iguanair_resume(struct usb_interface *intf) | |
570 | { | |
571 | struct iguanair *ir = usb_get_intfdata(intf); | |
572 | int rc = 0; | |
573 | ||
574 | mutex_lock(&ir->lock); | |
575 | ||
7c0bd96b SY |
576 | rc = usb_submit_urb(ir->urb_in, GFP_KERNEL); |
577 | if (rc) | |
578 | dev_warn(&intf->dev, "failed to submit urb: %d\n", rc); | |
579 | ||
26ff6313 SY |
580 | if (ir->receiver_on) { |
581 | rc = iguanair_receiver(ir, true); | |
582 | if (rc) | |
583 | dev_warn(ir->dev, "failed to enable receiver after resume\n"); | |
584 | } | |
585 | ||
586 | mutex_unlock(&ir->lock); | |
587 | ||
588 | return rc; | |
589 | } | |
590 | ||
591 | static const struct usb_device_id iguanair_table[] = { | |
592 | { USB_DEVICE(0x1781, 0x0938) }, | |
593 | { } | |
594 | }; | |
595 | ||
596 | static struct usb_driver iguanair_driver = { | |
597 | .name = DRIVER_NAME, | |
598 | .probe = iguanair_probe, | |
4c62e976 | 599 | .disconnect = iguanair_disconnect, |
26ff6313 SY |
600 | .suspend = iguanair_suspend, |
601 | .resume = iguanair_resume, | |
602 | .reset_resume = iguanair_resume, | |
7c0bd96b SY |
603 | .id_table = iguanair_table, |
604 | .soft_unbind = 1 /* we want to disable receiver on unbind */ | |
26ff6313 SY |
605 | }; |
606 | ||
607 | module_usb_driver(iguanair_driver); | |
608 | ||
609 | MODULE_DESCRIPTION("IguanaWorks USB IR Transceiver"); | |
610 | MODULE_AUTHOR("Sean Young <sean@mess.org>"); | |
611 | MODULE_LICENSE("GPL"); | |
612 | MODULE_DEVICE_TABLE(usb, iguanair_table); | |
613 |