blob: a4ab2e6b3f82fcdba0364745e064be3970b3ba8b [file] [log] [blame]
Sean Young26ff6312012-07-15 13:31:00 -03001/*
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"
Sean Young48b0fa62012-09-28 04:44:29 -030031#define BUF_SIZE 152
Sean Young26ff6312012-07-15 13:31:00 -030032
33struct iguanair {
34 struct rc_dev *rc;
35
36 struct device *dev;
37 struct usb_device *udev;
38
Sean Young0797b482012-08-13 08:59:40 -030039 uint16_t version;
Sean Young26ff6312012-07-15 13:31:00 -030040 uint8_t bufsize;
Sean Young48b0fa62012-09-28 04:44:29 -030041 uint8_t cycle_overhead;
Sean Young26ff6312012-07-15 13:31:00 -030042
43 struct mutex lock;
44
45 /* receiver support */
46 bool receiver_on;
Sean Young48b0fa62012-09-28 04:44:29 -030047 dma_addr_t dma_in, dma_out;
Sean Young26ff6312012-07-15 13:31:00 -030048 uint8_t *buf_in;
Sean Young48b0fa62012-09-28 04:44:29 -030049 struct urb *urb_in, *urb_out;
Sean Young26ff6312012-07-15 13:31:00 -030050 struct completion completion;
51
52 /* transmit support */
53 bool tx_overflow;
54 uint32_t carrier;
Sean Young48b0fa62012-09-28 04:44:29 -030055 struct send_packet *packet;
Sean Young26ff6312012-07-15 13:31:00 -030056
57 char name[64];
58 char phys[64];
59};
60
Sean Youngc6a3ea52013-01-14 05:51:44 -030061#define CMD_NOP 0x00
Sean Young26ff6312012-07-15 13:31:00 -030062#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
Sean Young48b0fa62012-09-28 04:44:29 -030075#define MAX_IN_PACKET 8u
76#define MAX_OUT_PACKET (sizeof(struct send_packet) + BUF_SIZE)
Sean Young26ff6312012-07-15 13:31:00 -030077#define TIMEOUT 1000
Sean Young2eec6762012-08-13 08:59:41 -030078#define RX_RESOLUTION 21333
Sean Young26ff6312012-07-15 13:31:00 -030079
80struct packet {
81 uint16_t start;
82 uint8_t direction;
83 uint8_t cmd;
84};
85
Sean Young26ff6312012-07-15 13:31:00 -030086struct 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
95static 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]) {
Sean Younge99a7cf2012-08-13 08:59:39 -030099 case CMD_GET_VERSION:
100 if (len == 6) {
Sean Young0797b482012-08-13 08:59:40 -0300101 ir->version = (ir->buf_in[5] << 8) |
102 ir->buf_in[4];
Sean Younge99a7cf2012-08-13 08:59:39 -0300103 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) {
Sean Young0797b482012-08-13 08:59:40 -0300114 ir->cycle_overhead = ir->buf_in[5];
Sean Younge99a7cf2012-08-13 08:59:39 -0300115 complete(&ir->completion);
116 }
117 break;
Sean Young26ff6312012-07-15 13:31:00 -0300118 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");
Sean Young116e4f52012-08-13 08:59:44 -0300127 ir_raw_event_reset(ir->rc);
Sean Young26ff6312012-07-15 13:31:00 -0300128 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;
Sean Youngb83bfd12012-08-13 08:59:47 -0300137 bool event = false;
Sean Young26ff6312012-07-15 13:31:00 -0300138
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) *
Sean Young2eec6762012-08-13 08:59:41 -0300148 RX_RESOLUTION;
Sean Young26ff6312012-07-15 13:31:00 -0300149 }
150
Sean Youngb83bfd12012-08-13 08:59:47 -0300151 if (ir_raw_event_store_with_filter(ir->rc, &rawir))
152 event = true;
Sean Young26ff6312012-07-15 13:31:00 -0300153 }
154
Sean Youngb83bfd12012-08-13 08:59:47 -0300155 if (event)
156 ir_raw_event_handle(ir->rc);
Sean Young26ff6312012-07-15 13:31:00 -0300157 }
158}
159
160static void iguanair_rx(struct urb *urb)
161{
162 struct iguanair *ir;
Sean Young7c0bd962012-08-13 08:59:43 -0300163 int rc;
Sean Young26ff6312012-07-15 13:31:00 -0300164
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
Sean Young7c0bd962012-08-13 08:59:43 -0300189 rc = usb_submit_urb(urb, GFP_ATOMIC);
190 if (rc && rc != -ENODEV)
191 dev_warn(ir->dev, "failed to resubmit urb: %d\n", rc);
Sean Young26ff6312012-07-15 13:31:00 -0300192}
193
Sean Young48b0fa62012-09-28 04:44:29 -0300194static void iguanair_irq_out(struct urb *urb)
Sean Young26ff6312012-07-15 13:31:00 -0300195{
Sean Young48b0fa62012-09-28 04:44:29 -0300196 struct iguanair *ir = urb->context;
197
198 if (urb->status)
199 dev_dbg(ir->dev, "Error: out urb status = %d\n", urb->status);
Sean Youngc6a3ea52013-01-14 05:51:44 -0300200
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);
Sean Young48b0fa62012-09-28 04:44:29 -0300204}
205
206static int iguanair_send(struct iguanair *ir, unsigned size)
207{
208 int rc;
Sean Young26ff6312012-07-15 13:31:00 -0300209
Sean Younge99a7cf2012-08-13 08:59:39 -0300210 INIT_COMPLETION(ir->completion);
Sean Young26ff6312012-07-15 13:31:00 -0300211
Sean Young48b0fa62012-09-28 04:44:29 -0300212 ir->urb_out->transfer_buffer_length = size;
213 rc = usb_submit_urb(ir->urb_out, GFP_KERNEL);
Sean Younge99a7cf2012-08-13 08:59:39 -0300214 if (rc)
215 return rc;
Sean Young26ff6312012-07-15 13:31:00 -0300216
Sean Younge99a7cf2012-08-13 08:59:39 -0300217 if (wait_for_completion_timeout(&ir->completion, TIMEOUT) == 0)
218 return -ETIMEDOUT;
Sean Young26ff6312012-07-15 13:31:00 -0300219
220 return rc;
221}
222
223static int iguanair_get_features(struct iguanair *ir)
224{
Sean Younge99a7cf2012-08-13 08:59:39 -0300225 int rc;
Sean Young26ff6312012-07-15 13:31:00 -0300226
Sean Youngc6a3ea52013-01-14 05:51:44 -0300227 /*
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 */
Sean Young48b0fa62012-09-28 04:44:29 -0300232 ir->packet->header.start = 0;
233 ir->packet->header.direction = DIR_OUT;
Sean Youngc6a3ea52013-01-14 05:51:44 -0300234 ir->packet->header.cmd = CMD_NOP;
235 iguanair_send(ir, sizeof(ir->packet->header));
Sean Young26ff6312012-07-15 13:31:00 -0300236
Sean Youngc6a3ea52013-01-14 05:51:44 -0300237 ir->packet->header.cmd = CMD_GET_VERSION;
Sean Young48b0fa62012-09-28 04:44:29 -0300238 rc = iguanair_send(ir, sizeof(ir->packet->header));
Sean Young26ff6312012-07-15 13:31:00 -0300239 if (rc) {
240 dev_info(ir->dev, "failed to get version\n");
241 goto out;
242 }
243
Sean Young0797b482012-08-13 08:59:40 -0300244 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
Sean Young26ff6312012-07-15 13:31:00 -0300250 ir->bufsize = 150;
251 ir->cycle_overhead = 65;
252
Sean Young48b0fa62012-09-28 04:44:29 -0300253 ir->packet->header.cmd = CMD_GET_BUFSIZE;
Sean Young26ff6312012-07-15 13:31:00 -0300254
Sean Young48b0fa62012-09-28 04:44:29 -0300255 rc = iguanair_send(ir, sizeof(ir->packet->header));
Sean Young26ff6312012-07-15 13:31:00 -0300256 if (rc) {
257 dev_info(ir->dev, "failed to get buffer size\n");
258 goto out;
259 }
260
Sean Young48b0fa62012-09-28 04:44:29 -0300261 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 }
Sean Young26ff6312012-07-15 13:31:00 -0300266
Sean Young48b0fa62012-09-28 04:44:29 -0300267 ir->packet->header.cmd = CMD_GET_FEATURES;
268
269 rc = iguanair_send(ir, sizeof(ir->packet->header));
Sean Youngc6a3ea52013-01-14 05:51:44 -0300270 if (rc)
Sean Young26ff6312012-07-15 13:31:00 -0300271 dev_info(ir->dev, "failed to get features\n");
Sean Young26ff6312012-07-15 13:31:00 -0300272out:
273 return rc;
274}
275
276static int iguanair_receiver(struct iguanair *ir, bool enable)
277{
Sean Young48b0fa62012-09-28 04:44:29 -0300278 ir->packet->header.start = 0;
279 ir->packet->header.direction = DIR_OUT;
280 ir->packet->header.cmd = enable ? CMD_RECEIVER_ON : CMD_RECEIVER_OFF;
Sean Young26ff6312012-07-15 13:31:00 -0300281
Sean Young116e4f52012-08-13 08:59:44 -0300282 if (enable)
283 ir_raw_event_reset(ir->rc);
284
Sean Youngc6a3ea52013-01-14 05:51:44 -0300285 return iguanair_send(ir, sizeof(ir->packet->header));
Sean Young26ff6312012-07-15 13:31:00 -0300286}
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 */
294static 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 */
Sean Young48b0fa62012-09-28 04:44:29 -0300330 ir->packet->busy7 = (4 - sevens) * 2;
331 ir->packet->busy4 = 110 - fours;
Sean Young26ff6312012-07-15 13:31:00 -0300332 }
333
334 mutex_unlock(&ir->lock);
335
336 return carrier;
337}
338
339static 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);
Sean Young48b0fa62012-09-28 04:44:29 -0300347 ir->packet->channels = mask << 4;
Sean Young26ff6312012-07-15 13:31:00 -0300348 mutex_unlock(&ir->lock);
349
350 return 0;
351}
352
353static int iguanair_tx(struct rc_dev *dev, unsigned *txbuf, unsigned count)
354{
355 struct iguanair *ir = dev->priv;
Sean Young39206312012-08-25 07:01:45 -0300356 uint8_t space;
357 unsigned i, size, periods, bytes;
358 int rc;
Sean Young26ff6312012-07-15 13:31:00 -0300359
360 mutex_lock(&ir->lock);
361
362 /* convert from us to carrier periods */
Sean Young39206312012-08-25 07:01:45 -0300363 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);
Sean Young884bfd02012-08-13 08:59:42 -0300366 if (size + bytes > ir->bufsize) {
367 count = i;
368 break;
369 }
Sean Young39206312012-08-25 07:01:45 -0300370 while (periods > 127) {
Sean Young48b0fa62012-09-28 04:44:29 -0300371 ir->packet->payload[size++] = 127 | space;
Sean Young39206312012-08-25 07:01:45 -0300372 periods -= 127;
373 }
374
Sean Young48b0fa62012-09-28 04:44:29 -0300375 ir->packet->payload[size++] = periods | space;
Sean Young39206312012-08-25 07:01:45 -0300376 space ^= 0x80;
Sean Young884bfd02012-08-13 08:59:42 -0300377 }
378
379 if (count == 0) {
380 rc = -EINVAL;
381 goto out;
Sean Young26ff6312012-07-15 13:31:00 -0300382 }
383
Sean Young48b0fa62012-09-28 04:44:29 -0300384 ir->packet->header.start = 0;
385 ir->packet->header.direction = DIR_OUT;
386 ir->packet->header.cmd = CMD_SEND;
387 ir->packet->length = size;
Sean Young26ff6312012-07-15 13:31:00 -0300388
389 ir->tx_overflow = false;
390
Sean Young48b0fa62012-09-28 04:44:29 -0300391 rc = iguanair_send(ir, sizeof(*ir->packet) + size);
Sean Young26ff6312012-07-15 13:31:00 -0300392
Sean Younge99a7cf2012-08-13 08:59:39 -0300393 if (rc == 0 && ir->tx_overflow)
394 rc = -EOVERFLOW;
Sean Young26ff6312012-07-15 13:31:00 -0300395
Sean Young26ff6312012-07-15 13:31:00 -0300396out:
397 mutex_unlock(&ir->lock);
Sean Young26ff6312012-07-15 13:31:00 -0300398
Sean Young884bfd02012-08-13 08:59:42 -0300399 return rc ? rc : count;
Sean Young26ff6312012-07-15 13:31:00 -0300400}
401
402static int iguanair_open(struct rc_dev *rdev)
403{
404 struct iguanair *ir = rdev->priv;
405 int rc;
406
407 mutex_lock(&ir->lock);
408
Sean Young26ff6312012-07-15 13:31:00 -0300409 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
418static 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;
Sean Young7c0bd962012-08-13 08:59:43 -0300427 if (rc && rc != -ENODEV)
Sean Young26ff6312012-07-15 13:31:00 -0300428 dev_warn(ir->dev, "failed to disable receiver: %d\n", rc);
429
Sean Young26ff6312012-07-15 13:31:00 -0300430 mutex_unlock(&ir->lock);
431}
432
Greg Kroah-Hartman4c62e972012-12-21 13:17:53 -0800433static int iguanair_probe(struct usb_interface *intf,
434 const struct usb_device_id *id)
Sean Young26ff6312012-07-15 13:31:00 -0300435{
436 struct usb_device *udev = interface_to_usbdev(intf);
437 struct iguanair *ir;
438 struct rc_dev *rc;
Sean Young48b0fa62012-09-28 04:44:29 -0300439 int ret, pipein, pipeout;
Sean Young26ff6312012-07-15 13:31:00 -0300440 struct usb_host_interface *idesc;
441
442 ir = kzalloc(sizeof(*ir), GFP_KERNEL);
443 rc = rc_allocate_device();
444 if (!ir || !rc) {
Sean Young884bfd02012-08-13 08:59:42 -0300445 ret = -ENOMEM;
Sean Young26ff6312012-07-15 13:31:00 -0300446 goto out;
447 }
448
Sean Young48b0fa62012-09-28 04:44:29 -0300449 ir->buf_in = usb_alloc_coherent(udev, MAX_IN_PACKET, GFP_KERNEL,
Sean Young26ff6312012-07-15 13:31:00 -0300450 &ir->dma_in);
Sean Young48b0fa62012-09-28 04:44:29 -0300451 ir->packet = usb_alloc_coherent(udev, MAX_OUT_PACKET, GFP_KERNEL,
452 &ir->dma_out);
Sean Young26ff6312012-07-15 13:31:00 -0300453 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
Sean Young48b0fa62012-09-28 04:44:29 -0300454 ir->urb_out = usb_alloc_urb(0, GFP_KERNEL);
Sean Young26ff6312012-07-15 13:31:00 -0300455
Sean Young48b0fa62012-09-28 04:44:29 -0300456 if (!ir->buf_in || !ir->packet || !ir->urb_in || !ir->urb_out) {
Sean Young884bfd02012-08-13 08:59:42 -0300457 ret = -ENOMEM;
Sean Young26ff6312012-07-15 13:31:00 -0300458 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;
Sean Young26ff6312012-07-15 13:31:00 -0300471 mutex_init(&ir->lock);
Sean Young48b0fa62012-09-28 04:44:29 -0300472
Sean Young26ff6312012-07-15 13:31:00 -0300473 init_completion(&ir->completion);
Sean Young48b0fa62012-09-28 04:44:29 -0300474 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;
Sean Young26ff6312012-07-15 13:31:00 -0300480
Sean Younge99a7cf2012-08-13 08:59:39 -0300481 pipein = usb_rcvintpipe(udev, idesc->endpoint[0].desc.bEndpointAddress);
Sean Young48b0fa62012-09-28 04:44:29 -0300482 usb_fill_int_urb(ir->urb_in, udev, pipein, ir->buf_in, MAX_IN_PACKET,
Sean Young64058382012-08-13 08:59:45 -0300483 iguanair_rx, ir, 1);
Sean Young26ff6312012-07-15 13:31:00 -0300484 ir->urb_in->transfer_dma = ir->dma_in;
485 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
486
Sean Younge99a7cf2012-08-13 08:59:39 -0300487 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
Sean Young26ff6312012-07-15 13:31:00 -0300497 snprintf(ir->name, sizeof(ir->name),
Sean Young0797b482012-08-13 08:59:40 -0300498 "IguanaWorks USB IR Transceiver version 0x%04x", ir->version);
Sean Young26ff6312012-07-15 13:31:00 -0300499
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;
David Härdemanc003ab12012-10-11 19:11:54 -0300507 rc->allowed_protos = RC_BIT_ALL;
Sean Young26ff6312012-07-15 13:31:00 -0300508 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;
Sean Young2eec6762012-08-13 08:59:41 -0300515 rc->map_name = RC_MAP_RC6_MCE;
516 rc->timeout = MS_TO_NS(100);
517 rc->rx_resolution = RX_RESOLUTION;
Sean Young26ff6312012-07-15 13:31:00 -0300518
519 iguanair_set_tx_carrier(rc, 38000);
Sean Youngd0aab652013-01-06 13:19:44 -0300520 iguanair_set_tx_mask(rc, 0);
Sean Young26ff6312012-07-15 13:31:00 -0300521
522 ret = rc_register_device(rc);
523 if (ret < 0) {
524 dev_err(&intf->dev, "failed to register rc device %d", ret);
Sean Younge99a7cf2012-08-13 08:59:39 -0300525 goto out2;
Sean Young26ff6312012-07-15 13:31:00 -0300526 }
527
528 usb_set_intfdata(intf, ir);
529
Sean Young26ff6312012-07-15 13:31:00 -0300530 return 0;
Sean Younge99a7cf2012-08-13 08:59:39 -0300531out2:
532 usb_kill_urb(ir->urb_in);
Sean Young48b0fa62012-09-28 04:44:29 -0300533 usb_kill_urb(ir->urb_out);
Sean Young26ff6312012-07-15 13:31:00 -0300534out:
535 if (ir) {
536 usb_free_urb(ir->urb_in);
Sean Young48b0fa62012-09-28 04:44:29 -0300537 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);
Sean Young26ff6312012-07-15 13:31:00 -0300541 }
542 rc_free_device(rc);
543 kfree(ir);
544 return ret;
545}
546
Greg Kroah-Hartman4c62e972012-12-21 13:17:53 -0800547static void iguanair_disconnect(struct usb_interface *intf)
Sean Young26ff6312012-07-15 13:31:00 -0300548{
549 struct iguanair *ir = usb_get_intfdata(intf);
550
Sean Young7c0bd962012-08-13 08:59:43 -0300551 rc_unregister_device(ir->rc);
Sean Young26ff6312012-07-15 13:31:00 -0300552 usb_set_intfdata(intf, NULL);
Sean Young26ff6312012-07-15 13:31:00 -0300553 usb_kill_urb(ir->urb_in);
Sean Young48b0fa62012-09-28 04:44:29 -0300554 usb_kill_urb(ir->urb_out);
Sean Young26ff6312012-07-15 13:31:00 -0300555 usb_free_urb(ir->urb_in);
Sean Young48b0fa62012-09-28 04:44:29 -0300556 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);
Sean Young26ff6312012-07-15 13:31:00 -0300559 kfree(ir);
560}
561
562static 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
Sean Young7c0bd962012-08-13 08:59:43 -0300575 usb_kill_urb(ir->urb_in);
Sean Young48b0fa62012-09-28 04:44:29 -0300576 usb_kill_urb(ir->urb_out);
Sean Young7c0bd962012-08-13 08:59:43 -0300577
Sean Young26ff6312012-07-15 13:31:00 -0300578 mutex_unlock(&ir->lock);
579
580 return rc;
581}
582
583static 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
Sean Young7c0bd962012-08-13 08:59:43 -0300590 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
Sean Young26ff6312012-07-15 13:31:00 -0300594 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
605static const struct usb_device_id iguanair_table[] = {
606 { USB_DEVICE(0x1781, 0x0938) },
607 { }
608};
609
610static struct usb_driver iguanair_driver = {
611 .name = DRIVER_NAME,
612 .probe = iguanair_probe,
Greg Kroah-Hartman4c62e972012-12-21 13:17:53 -0800613 .disconnect = iguanair_disconnect,
Sean Young26ff6312012-07-15 13:31:00 -0300614 .suspend = iguanair_suspend,
615 .resume = iguanair_resume,
616 .reset_resume = iguanair_resume,
Sean Young7c0bd962012-08-13 08:59:43 -0300617 .id_table = iguanair_table,
618 .soft_unbind = 1 /* we want to disable receiver on unbind */
Sean Young26ff6312012-07-15 13:31:00 -0300619};
620
621module_usb_driver(iguanair_driver);
622
623MODULE_DESCRIPTION("IguanaWorks USB IR Transceiver");
624MODULE_AUTHOR("Sean Young <sean@mess.org>");
625MODULE_LICENSE("GPL");
626MODULE_DEVICE_TABLE(usb, iguanair_table);
627