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19770693 JW |
1 | /* |
2 | * Streamzap Remote Control driver | |
3 | * | |
4 | * Copyright (c) 2005 Christoph Bartelmus <lirc@bartelmus.de> | |
8e9e6064 | 5 | * Copyright (c) 2010 Jarod Wilson <jarod@wilsonet.com> |
19770693 JW |
6 | * |
7 | * This driver was based on the work of Greg Wickham and Adrian | |
8 | * Dewhurst. It was substantially rewritten to support correct signal | |
9 | * gaps and now maintains a delay buffer, which is used to present | |
10 | * consistent timing behaviour to user space applications. Without the | |
11 | * delay buffer an ugly hack would be required in lircd, which can | |
12 | * cause sluggish signal decoding in certain situations. | |
13 | * | |
8e9e6064 JW |
14 | * Ported to in-kernel ir-core interface by Jarod Wilson |
15 | * | |
19770693 JW |
16 | * This driver is based on the USB skeleton driver packaged with the |
17 | * kernel; copyright (C) 2001-2003 Greg Kroah-Hartman (greg@kroah.com) | |
18 | * | |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
23 | * | |
24 | * This program is distributed in the hope that it will be useful, | |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public License | |
30 | * along with this program; if not, write to the Free Software | |
31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
32 | */ | |
33 | ||
8e9e6064 | 34 | #include <linux/device.h> |
19770693 | 35 | #include <linux/module.h> |
8e9e6064 | 36 | #include <linux/slab.h> |
635f76b2 PB |
37 | #include <linux/usb.h> |
38 | #include <linux/usb/input.h> | |
6bda9644 | 39 | #include <media/rc-core.h> |
19770693 | 40 | |
7a569f52 | 41 | #define DRIVER_VERSION "1.61" |
8e9e6064 | 42 | #define DRIVER_NAME "streamzap" |
19770693 JW |
43 | #define DRIVER_DESC "Streamzap Remote Control driver" |
44 | ||
19770693 JW |
45 | #define USB_STREAMZAP_VENDOR_ID 0x0e9c |
46 | #define USB_STREAMZAP_PRODUCT_ID 0x0000 | |
47 | ||
19770693 JW |
48 | /* table of devices that work with this driver */ |
49 | static struct usb_device_id streamzap_table[] = { | |
50 | /* Streamzap Remote Control */ | |
51 | { USB_DEVICE(USB_STREAMZAP_VENDOR_ID, USB_STREAMZAP_PRODUCT_ID) }, | |
52 | /* Terminating entry */ | |
53 | { } | |
54 | }; | |
55 | ||
56 | MODULE_DEVICE_TABLE(usb, streamzap_table); | |
57 | ||
b768d47e JW |
58 | #define SZ_PULSE_MASK 0xf0 |
59 | #define SZ_SPACE_MASK 0x0f | |
60 | #define SZ_TIMEOUT 0xff | |
61 | #define SZ_RESOLUTION 256 | |
19770693 JW |
62 | |
63 | /* number of samples buffered */ | |
8e9e6064 | 64 | #define SZ_BUF_LEN 128 |
19770693 JW |
65 | |
66 | enum StreamzapDecoderState { | |
67 | PulseSpace, | |
68 | FullPulse, | |
69 | FullSpace, | |
70 | IgnorePulse | |
71 | }; | |
72 | ||
8e9e6064 JW |
73 | /* structure to hold our device specific stuff */ |
74 | struct streamzap_ir { | |
8e9e6064 | 75 | /* ir-core */ |
d8b4b582 | 76 | struct rc_dev *rdev; |
8e9e6064 JW |
77 | |
78 | /* core device info */ | |
79 | struct device *dev; | |
19770693 JW |
80 | |
81 | /* usb */ | |
8e9e6064 | 82 | struct usb_device *usbdev; |
19770693 | 83 | struct usb_interface *interface; |
8e9e6064 JW |
84 | struct usb_endpoint_descriptor *endpoint; |
85 | struct urb *urb_in; | |
19770693 JW |
86 | |
87 | /* buffer & dma */ | |
88 | unsigned char *buf_in; | |
89 | dma_addr_t dma_in; | |
90 | unsigned int buf_in_len; | |
91 | ||
8e9e6064 JW |
92 | /* track what state we're in */ |
93 | enum StreamzapDecoderState decoder_state; | |
19770693 | 94 | /* tracks whether we are currently receiving some signal */ |
8e9e6064 | 95 | bool idle; |
19770693 JW |
96 | /* sum of signal lengths received since signal start */ |
97 | unsigned long sum; | |
98 | /* start time of signal; necessary for gap tracking */ | |
99 | struct timeval signal_last; | |
100 | struct timeval signal_start; | |
7a569f52 | 101 | bool timeout_enabled; |
8e9e6064 JW |
102 | |
103 | char name[128]; | |
104 | char phys[64]; | |
19770693 JW |
105 | }; |
106 | ||
107 | ||
108 | /* local function prototypes */ | |
109 | static int streamzap_probe(struct usb_interface *interface, | |
110 | const struct usb_device_id *id); | |
111 | static void streamzap_disconnect(struct usb_interface *interface); | |
8e9e6064 | 112 | static void streamzap_callback(struct urb *urb); |
19770693 JW |
113 | static int streamzap_suspend(struct usb_interface *intf, pm_message_t message); |
114 | static int streamzap_resume(struct usb_interface *intf); | |
115 | ||
116 | /* usb specific object needed to register this driver with the usb subsystem */ | |
19770693 JW |
117 | static struct usb_driver streamzap_driver = { |
118 | .name = DRIVER_NAME, | |
119 | .probe = streamzap_probe, | |
120 | .disconnect = streamzap_disconnect, | |
121 | .suspend = streamzap_suspend, | |
122 | .resume = streamzap_resume, | |
123 | .id_table = streamzap_table, | |
124 | }; | |
125 | ||
7a569f52 | 126 | static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir) |
19770693 | 127 | { |
1338c925 JW |
128 | dev_dbg(sz->dev, "Storing %s with duration %u us\n", |
129 | (rawir.pulse ? "pulse" : "space"), rawir.duration); | |
d8b4b582 | 130 | ir_raw_event_store_with_filter(sz->rdev, &rawir); |
19770693 JW |
131 | } |
132 | ||
8e9e6064 JW |
133 | static void sz_push_full_pulse(struct streamzap_ir *sz, |
134 | unsigned char value) | |
19770693 | 135 | { |
4651918a | 136 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 | 137 | |
19770693 JW |
138 | if (sz->idle) { |
139 | long deltv; | |
19770693 JW |
140 | |
141 | sz->signal_last = sz->signal_start; | |
142 | do_gettimeofday(&sz->signal_start); | |
143 | ||
8e9e6064 | 144 | deltv = sz->signal_start.tv_sec - sz->signal_last.tv_sec; |
7a569f52 | 145 | rawir.pulse = false; |
19770693 JW |
146 | if (deltv > 15) { |
147 | /* really long time */ | |
7a569f52 | 148 | rawir.duration = IR_MAX_DURATION; |
19770693 | 149 | } else { |
7a569f52 | 150 | rawir.duration = (int)(deltv * 1000000 + |
8e9e6064 JW |
151 | sz->signal_start.tv_usec - |
152 | sz->signal_last.tv_usec); | |
7a569f52 | 153 | rawir.duration -= sz->sum; |
b4608fae | 154 | rawir.duration = US_TO_NS(rawir.duration); |
7a569f52 | 155 | rawir.duration &= IR_MAX_DURATION; |
19770693 | 156 | } |
7a569f52 | 157 | sz_push(sz, rawir); |
19770693 | 158 | |
7a569f52 | 159 | sz->idle = false; |
19770693 JW |
160 | sz->sum = 0; |
161 | } | |
162 | ||
7a569f52 | 163 | rawir.pulse = true; |
b768d47e JW |
164 | rawir.duration = ((int) value) * SZ_RESOLUTION; |
165 | rawir.duration += SZ_RESOLUTION / 2; | |
7a569f52 | 166 | sz->sum += rawir.duration; |
b4608fae | 167 | rawir.duration = US_TO_NS(rawir.duration); |
7a569f52 | 168 | rawir.duration &= IR_MAX_DURATION; |
7a569f52 | 169 | sz_push(sz, rawir); |
19770693 JW |
170 | } |
171 | ||
8e9e6064 JW |
172 | static void sz_push_half_pulse(struct streamzap_ir *sz, |
173 | unsigned char value) | |
19770693 | 174 | { |
b768d47e | 175 | sz_push_full_pulse(sz, (value & SZ_PULSE_MASK) >> 4); |
19770693 JW |
176 | } |
177 | ||
8e9e6064 JW |
178 | static void sz_push_full_space(struct streamzap_ir *sz, |
179 | unsigned char value) | |
19770693 | 180 | { |
4651918a | 181 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 JW |
182 | |
183 | rawir.pulse = false; | |
b768d47e JW |
184 | rawir.duration = ((int) value) * SZ_RESOLUTION; |
185 | rawir.duration += SZ_RESOLUTION / 2; | |
7a569f52 | 186 | sz->sum += rawir.duration; |
b4608fae | 187 | rawir.duration = US_TO_NS(rawir.duration); |
7a569f52 | 188 | sz_push(sz, rawir); |
19770693 JW |
189 | } |
190 | ||
8e9e6064 JW |
191 | static void sz_push_half_space(struct streamzap_ir *sz, |
192 | unsigned long value) | |
19770693 | 193 | { |
b768d47e | 194 | sz_push_full_space(sz, value & SZ_SPACE_MASK); |
19770693 JW |
195 | } |
196 | ||
197 | /** | |
8e9e6064 | 198 | * streamzap_callback - usb IRQ handler callback |
19770693 JW |
199 | * |
200 | * This procedure is invoked on reception of data from | |
201 | * the usb remote. | |
202 | */ | |
8e9e6064 | 203 | static void streamzap_callback(struct urb *urb) |
19770693 | 204 | { |
8e9e6064 JW |
205 | struct streamzap_ir *sz; |
206 | unsigned int i; | |
207 | int len; | |
19770693 JW |
208 | |
209 | if (!urb) | |
210 | return; | |
211 | ||
212 | sz = urb->context; | |
213 | len = urb->actual_length; | |
214 | ||
215 | switch (urb->status) { | |
216 | case -ECONNRESET: | |
217 | case -ENOENT: | |
218 | case -ESHUTDOWN: | |
219 | /* | |
220 | * this urb is terminated, clean up. | |
221 | * sz might already be invalid at this point | |
222 | */ | |
8e9e6064 | 223 | dev_err(sz->dev, "urb terminated, status: %d\n", urb->status); |
19770693 JW |
224 | return; |
225 | default: | |
226 | break; | |
227 | } | |
228 | ||
8e9e6064 | 229 | dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len); |
7a569f52 | 230 | for (i = 0; i < len; i++) { |
1338c925 | 231 | dev_dbg(sz->dev, "sz->buf_in[%d]: %x\n", |
7a569f52 JW |
232 | i, (unsigned char)sz->buf_in[i]); |
233 | switch (sz->decoder_state) { | |
234 | case PulseSpace: | |
b768d47e JW |
235 | if ((sz->buf_in[i] & SZ_PULSE_MASK) == |
236 | SZ_PULSE_MASK) { | |
7a569f52 JW |
237 | sz->decoder_state = FullPulse; |
238 | continue; | |
b768d47e JW |
239 | } else if ((sz->buf_in[i] & SZ_SPACE_MASK) |
240 | == SZ_SPACE_MASK) { | |
7a569f52 JW |
241 | sz_push_half_pulse(sz, sz->buf_in[i]); |
242 | sz->decoder_state = FullSpace; | |
243 | continue; | |
244 | } else { | |
245 | sz_push_half_pulse(sz, sz->buf_in[i]); | |
8e9e6064 | 246 | sz_push_half_space(sz, sz->buf_in[i]); |
19770693 | 247 | } |
7a569f52 JW |
248 | break; |
249 | case FullPulse: | |
250 | sz_push_full_pulse(sz, sz->buf_in[i]); | |
251 | sz->decoder_state = IgnorePulse; | |
252 | break; | |
253 | case FullSpace: | |
b768d47e | 254 | if (sz->buf_in[i] == SZ_TIMEOUT) { |
4651918a | 255 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 JW |
256 | |
257 | rawir.pulse = false; | |
d8b4b582 | 258 | rawir.duration = sz->rdev->timeout; |
7a569f52 JW |
259 | sz->idle = true; |
260 | if (sz->timeout_enabled) | |
261 | sz_push(sz, rawir); | |
d8b4b582 | 262 | ir_raw_event_handle(sz->rdev); |
56b0ec30 | 263 | ir_raw_event_reset(sz->rdev); |
7a569f52 JW |
264 | } else { |
265 | sz_push_full_space(sz, sz->buf_in[i]); | |
266 | } | |
267 | sz->decoder_state = PulseSpace; | |
268 | break; | |
269 | case IgnorePulse: | |
b768d47e JW |
270 | if ((sz->buf_in[i] & SZ_SPACE_MASK) == |
271 | SZ_SPACE_MASK) { | |
7a569f52 JW |
272 | sz->decoder_state = FullSpace; |
273 | continue; | |
274 | } | |
275 | sz_push_half_space(sz, sz->buf_in[i]); | |
276 | sz->decoder_state = PulseSpace; | |
277 | break; | |
19770693 JW |
278 | } |
279 | } | |
280 | ||
56b0ec30 | 281 | ir_raw_event_handle(sz->rdev); |
19770693 JW |
282 | usb_submit_urb(urb, GFP_ATOMIC); |
283 | ||
284 | return; | |
285 | } | |
286 | ||
d8b4b582 | 287 | static struct rc_dev *streamzap_init_rc_dev(struct streamzap_ir *sz) |
8e9e6064 | 288 | { |
d8b4b582 | 289 | struct rc_dev *rdev; |
8e9e6064 JW |
290 | struct device *dev = sz->dev; |
291 | int ret; | |
292 | ||
d8b4b582 DH |
293 | rdev = rc_allocate_device(); |
294 | if (!rdev) { | |
295 | dev_err(dev, "remote dev allocation failed\n"); | |
296 | goto out; | |
8e9e6064 JW |
297 | } |
298 | ||
299 | snprintf(sz->name, sizeof(sz->name), "Streamzap PC Remote Infrared " | |
300 | "Receiver (%04x:%04x)", | |
301 | le16_to_cpu(sz->usbdev->descriptor.idVendor), | |
302 | le16_to_cpu(sz->usbdev->descriptor.idProduct)); | |
8e9e6064 JW |
303 | usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys)); |
304 | strlcat(sz->phys, "/input0", sizeof(sz->phys)); | |
8e9e6064 | 305 | |
d8b4b582 DH |
306 | rdev->input_name = sz->name; |
307 | rdev->input_phys = sz->phys; | |
5ad1a555 PB |
308 | usb_to_input_id(sz->usbdev, &rdev->input_id); |
309 | rdev->dev.parent = dev; | |
d8b4b582 DH |
310 | rdev->priv = sz; |
311 | rdev->driver_type = RC_DRIVER_IR_RAW; | |
c5540fbb | 312 | rdev->allowed_protocols = RC_BIT_ALL; |
d8b4b582 DH |
313 | rdev->driver_name = DRIVER_NAME; |
314 | rdev->map_name = RC_MAP_STREAMZAP; | |
635f76b2 | 315 | |
d8b4b582 | 316 | ret = rc_register_device(rdev); |
8e9e6064 JW |
317 | if (ret < 0) { |
318 | dev_err(dev, "remote input device register failed\n"); | |
d8b4b582 | 319 | goto out; |
8e9e6064 JW |
320 | } |
321 | ||
d8b4b582 | 322 | return rdev; |
8e9e6064 | 323 | |
d8b4b582 DH |
324 | out: |
325 | rc_free_device(rdev); | |
8e9e6064 JW |
326 | return NULL; |
327 | } | |
328 | ||
19770693 JW |
329 | /** |
330 | * streamzap_probe | |
331 | * | |
332 | * Called by usb-core to associated with a candidate device | |
333 | * On any failure the return value is the ERROR | |
334 | * On success return 0 | |
335 | */ | |
4c62e976 GKH |
336 | static int streamzap_probe(struct usb_interface *intf, |
337 | const struct usb_device_id *id) | |
19770693 | 338 | { |
8e9e6064 | 339 | struct usb_device *usbdev = interface_to_usbdev(intf); |
19770693 | 340 | struct usb_host_interface *iface_host; |
8e9e6064 | 341 | struct streamzap_ir *sz = NULL; |
19770693 JW |
342 | char buf[63], name[128] = ""; |
343 | int retval = -ENOMEM; | |
8e9e6064 | 344 | int pipe, maxp; |
19770693 JW |
345 | |
346 | /* Allocate space for device driver specific data */ | |
8e9e6064 JW |
347 | sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL); |
348 | if (!sz) | |
19770693 JW |
349 | return -ENOMEM; |
350 | ||
8e9e6064 JW |
351 | sz->usbdev = usbdev; |
352 | sz->interface = intf; | |
19770693 JW |
353 | |
354 | /* Check to ensure endpoint information matches requirements */ | |
8e9e6064 | 355 | iface_host = intf->cur_altsetting; |
19770693 JW |
356 | |
357 | if (iface_host->desc.bNumEndpoints != 1) { | |
8e9e6064 JW |
358 | dev_err(&intf->dev, "%s: Unexpected desc.bNumEndpoints (%d)\n", |
359 | __func__, iface_host->desc.bNumEndpoints); | |
19770693 JW |
360 | retval = -ENODEV; |
361 | goto free_sz; | |
362 | } | |
363 | ||
364 | sz->endpoint = &(iface_host->endpoint[0].desc); | |
5611588b | 365 | if (!usb_endpoint_dir_in(sz->endpoint)) { |
8e9e6064 JW |
366 | dev_err(&intf->dev, "%s: endpoint doesn't match input device " |
367 | "02%02x\n", __func__, sz->endpoint->bEndpointAddress); | |
19770693 JW |
368 | retval = -ENODEV; |
369 | goto free_sz; | |
370 | } | |
371 | ||
5611588b | 372 | if (!usb_endpoint_xfer_int(sz->endpoint)) { |
8e9e6064 JW |
373 | dev_err(&intf->dev, "%s: endpoint attributes don't match xfer " |
374 | "02%02x\n", __func__, sz->endpoint->bmAttributes); | |
19770693 JW |
375 | retval = -ENODEV; |
376 | goto free_sz; | |
377 | } | |
378 | ||
8e9e6064 JW |
379 | pipe = usb_rcvintpipe(usbdev, sz->endpoint->bEndpointAddress); |
380 | maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe)); | |
381 | ||
382 | if (maxp == 0) { | |
383 | dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n", | |
384 | __func__); | |
19770693 JW |
385 | retval = -ENODEV; |
386 | goto free_sz; | |
387 | } | |
388 | ||
389 | /* Allocate the USB buffer and IRQ URB */ | |
8e9e6064 JW |
390 | sz->buf_in = usb_alloc_coherent(usbdev, maxp, GFP_ATOMIC, &sz->dma_in); |
391 | if (!sz->buf_in) | |
19770693 JW |
392 | goto free_sz; |
393 | ||
394 | sz->urb_in = usb_alloc_urb(0, GFP_KERNEL); | |
8e9e6064 JW |
395 | if (!sz->urb_in) |
396 | goto free_buf_in; | |
19770693 | 397 | |
8e9e6064 JW |
398 | sz->dev = &intf->dev; |
399 | sz->buf_in_len = maxp; | |
19770693 | 400 | |
8e9e6064 JW |
401 | if (usbdev->descriptor.iManufacturer |
402 | && usb_string(usbdev, usbdev->descriptor.iManufacturer, | |
19770693 JW |
403 | buf, sizeof(buf)) > 0) |
404 | strlcpy(name, buf, sizeof(name)); | |
405 | ||
8e9e6064 JW |
406 | if (usbdev->descriptor.iProduct |
407 | && usb_string(usbdev, usbdev->descriptor.iProduct, | |
19770693 JW |
408 | buf, sizeof(buf)) > 0) |
409 | snprintf(name + strlen(name), sizeof(name) - strlen(name), | |
410 | " %s", buf); | |
411 | ||
d8b4b582 DH |
412 | sz->rdev = streamzap_init_rc_dev(sz); |
413 | if (!sz->rdev) | |
414 | goto rc_dev_fail; | |
19770693 | 415 | |
8e9e6064 JW |
416 | sz->idle = true; |
417 | sz->decoder_state = PulseSpace; | |
7a569f52 JW |
418 | /* FIXME: don't yet have a way to set this */ |
419 | sz->timeout_enabled = true; | |
b4608fae | 420 | sz->rdev->timeout = ((US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION) & |
1338c925 | 421 | IR_MAX_DURATION) | 0x03000000); |
8e9e6064 JW |
422 | #if 0 |
423 | /* not yet supported, depends on patches from maxim */ | |
424 | /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */ | |
b4608fae JW |
425 | sz->min_timeout = US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION); |
426 | sz->max_timeout = US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION); | |
8e9e6064 | 427 | #endif |
19770693 | 428 | |
8e9e6064 | 429 | do_gettimeofday(&sz->signal_start); |
19770693 | 430 | |
8e9e6064 JW |
431 | /* Complete final initialisations */ |
432 | usb_fill_int_urb(sz->urb_in, usbdev, pipe, sz->buf_in, | |
433 | maxp, (usb_complete_t)streamzap_callback, | |
434 | sz, sz->endpoint->bInterval); | |
435 | sz->urb_in->transfer_dma = sz->dma_in; | |
436 | sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
19770693 | 437 | |
8e9e6064 | 438 | usb_set_intfdata(intf, sz); |
19770693 | 439 | |
7a569f52 JW |
440 | if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) |
441 | dev_err(sz->dev, "urb submit failed\n"); | |
19770693 | 442 | |
8e9e6064 JW |
443 | dev_info(sz->dev, "Registered %s on usb%d:%d\n", name, |
444 | usbdev->bus->busnum, usbdev->devnum); | |
19770693 | 445 | |
8e9e6064 | 446 | return 0; |
19770693 | 447 | |
d8b4b582 | 448 | rc_dev_fail: |
8e9e6064 JW |
449 | usb_free_urb(sz->urb_in); |
450 | free_buf_in: | |
451 | usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in); | |
452 | free_sz: | |
453 | kfree(sz); | |
19770693 | 454 | |
8e9e6064 | 455 | return retval; |
19770693 JW |
456 | } |
457 | ||
458 | /** | |
459 | * streamzap_disconnect | |
460 | * | |
461 | * Called by the usb core when the device is removed from the system. | |
462 | * | |
463 | * This routine guarantees that the driver will not submit any more urbs | |
8e9e6064 | 464 | * by clearing dev->usbdev. It is also supposed to terminate any currently |
19770693 JW |
465 | * active urbs. Unfortunately, usb_bulk_msg(), used in streamzap_read(), |
466 | * does not provide any way to do this. | |
467 | */ | |
468 | static void streamzap_disconnect(struct usb_interface *interface) | |
469 | { | |
8e9e6064 JW |
470 | struct streamzap_ir *sz = usb_get_intfdata(interface); |
471 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
19770693 | 472 | |
8e9e6064 | 473 | usb_set_intfdata(interface, NULL); |
19770693 | 474 | |
8e9e6064 JW |
475 | if (!sz) |
476 | return; | |
19770693 | 477 | |
8e9e6064 | 478 | sz->usbdev = NULL; |
d8b4b582 | 479 | rc_unregister_device(sz->rdev); |
8e9e6064 | 480 | usb_kill_urb(sz->urb_in); |
19770693 | 481 | usb_free_urb(sz->urb_in); |
8e9e6064 | 482 | usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in); |
19770693 | 483 | |
19770693 | 484 | kfree(sz); |
19770693 JW |
485 | } |
486 | ||
487 | static int streamzap_suspend(struct usb_interface *intf, pm_message_t message) | |
488 | { | |
8e9e6064 | 489 | struct streamzap_ir *sz = usb_get_intfdata(intf); |
19770693 | 490 | |
8e9e6064 | 491 | usb_kill_urb(sz->urb_in); |
19770693 | 492 | |
19770693 JW |
493 | return 0; |
494 | } | |
495 | ||
496 | static int streamzap_resume(struct usb_interface *intf) | |
497 | { | |
8e9e6064 | 498 | struct streamzap_ir *sz = usb_get_intfdata(intf); |
19770693 | 499 | |
8e9e6064 JW |
500 | if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) { |
501 | dev_err(sz->dev, "Error sumbiting urb\n"); | |
502 | return -EIO; | |
19770693 | 503 | } |
8e9e6064 | 504 | |
19770693 JW |
505 | return 0; |
506 | } | |
507 | ||
ecb3b2b3 | 508 | module_usb_driver(streamzap_driver); |
19770693 | 509 | |
8e9e6064 | 510 | MODULE_AUTHOR("Jarod Wilson <jarod@wilsonet.com>"); |
19770693 JW |
511 | MODULE_DESCRIPTION(DRIVER_DESC); |
512 | MODULE_LICENSE("GPL"); |