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Commit | Line | Data |
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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); |
95cf60aa MCC |
155 | rawir.duration = (rawir.duration > IR_MAX_DURATION) ? |
156 | IR_MAX_DURATION : rawir.duration; | |
19770693 | 157 | } |
7a569f52 | 158 | sz_push(sz, rawir); |
19770693 | 159 | |
7a569f52 | 160 | sz->idle = false; |
19770693 JW |
161 | sz->sum = 0; |
162 | } | |
163 | ||
7a569f52 | 164 | rawir.pulse = true; |
b768d47e JW |
165 | rawir.duration = ((int) value) * SZ_RESOLUTION; |
166 | rawir.duration += SZ_RESOLUTION / 2; | |
7a569f52 | 167 | sz->sum += rawir.duration; |
b4608fae | 168 | rawir.duration = US_TO_NS(rawir.duration); |
95cf60aa MCC |
169 | rawir.duration = (rawir.duration > IR_MAX_DURATION) ? |
170 | IR_MAX_DURATION : rawir.duration; | |
7a569f52 | 171 | sz_push(sz, rawir); |
19770693 JW |
172 | } |
173 | ||
8e9e6064 JW |
174 | static void sz_push_half_pulse(struct streamzap_ir *sz, |
175 | unsigned char value) | |
19770693 | 176 | { |
b768d47e | 177 | sz_push_full_pulse(sz, (value & SZ_PULSE_MASK) >> 4); |
19770693 JW |
178 | } |
179 | ||
8e9e6064 JW |
180 | static void sz_push_full_space(struct streamzap_ir *sz, |
181 | unsigned char value) | |
19770693 | 182 | { |
4651918a | 183 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 JW |
184 | |
185 | rawir.pulse = false; | |
b768d47e JW |
186 | rawir.duration = ((int) value) * SZ_RESOLUTION; |
187 | rawir.duration += SZ_RESOLUTION / 2; | |
7a569f52 | 188 | sz->sum += rawir.duration; |
b4608fae | 189 | rawir.duration = US_TO_NS(rawir.duration); |
7a569f52 | 190 | sz_push(sz, rawir); |
19770693 JW |
191 | } |
192 | ||
8e9e6064 JW |
193 | static void sz_push_half_space(struct streamzap_ir *sz, |
194 | unsigned long value) | |
19770693 | 195 | { |
b768d47e | 196 | sz_push_full_space(sz, value & SZ_SPACE_MASK); |
19770693 JW |
197 | } |
198 | ||
199 | /** | |
8e9e6064 | 200 | * streamzap_callback - usb IRQ handler callback |
19770693 JW |
201 | * |
202 | * This procedure is invoked on reception of data from | |
203 | * the usb remote. | |
204 | */ | |
8e9e6064 | 205 | static void streamzap_callback(struct urb *urb) |
19770693 | 206 | { |
8e9e6064 JW |
207 | struct streamzap_ir *sz; |
208 | unsigned int i; | |
209 | int len; | |
19770693 JW |
210 | |
211 | if (!urb) | |
212 | return; | |
213 | ||
214 | sz = urb->context; | |
215 | len = urb->actual_length; | |
216 | ||
217 | switch (urb->status) { | |
218 | case -ECONNRESET: | |
219 | case -ENOENT: | |
220 | case -ESHUTDOWN: | |
221 | /* | |
222 | * this urb is terminated, clean up. | |
223 | * sz might already be invalid at this point | |
224 | */ | |
8e9e6064 | 225 | dev_err(sz->dev, "urb terminated, status: %d\n", urb->status); |
19770693 JW |
226 | return; |
227 | default: | |
228 | break; | |
229 | } | |
230 | ||
8e9e6064 | 231 | dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len); |
7a569f52 | 232 | for (i = 0; i < len; i++) { |
1338c925 | 233 | dev_dbg(sz->dev, "sz->buf_in[%d]: %x\n", |
7a569f52 JW |
234 | i, (unsigned char)sz->buf_in[i]); |
235 | switch (sz->decoder_state) { | |
236 | case PulseSpace: | |
b768d47e JW |
237 | if ((sz->buf_in[i] & SZ_PULSE_MASK) == |
238 | SZ_PULSE_MASK) { | |
7a569f52 JW |
239 | sz->decoder_state = FullPulse; |
240 | continue; | |
b768d47e JW |
241 | } else if ((sz->buf_in[i] & SZ_SPACE_MASK) |
242 | == SZ_SPACE_MASK) { | |
7a569f52 JW |
243 | sz_push_half_pulse(sz, sz->buf_in[i]); |
244 | sz->decoder_state = FullSpace; | |
245 | continue; | |
246 | } else { | |
247 | sz_push_half_pulse(sz, sz->buf_in[i]); | |
8e9e6064 | 248 | sz_push_half_space(sz, sz->buf_in[i]); |
19770693 | 249 | } |
7a569f52 JW |
250 | break; |
251 | case FullPulse: | |
252 | sz_push_full_pulse(sz, sz->buf_in[i]); | |
253 | sz->decoder_state = IgnorePulse; | |
254 | break; | |
255 | case FullSpace: | |
b768d47e | 256 | if (sz->buf_in[i] == SZ_TIMEOUT) { |
4651918a | 257 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 JW |
258 | |
259 | rawir.pulse = false; | |
d8b4b582 | 260 | rawir.duration = sz->rdev->timeout; |
7a569f52 JW |
261 | sz->idle = true; |
262 | if (sz->timeout_enabled) | |
263 | sz_push(sz, rawir); | |
d8b4b582 | 264 | ir_raw_event_handle(sz->rdev); |
56b0ec30 | 265 | ir_raw_event_reset(sz->rdev); |
7a569f52 JW |
266 | } else { |
267 | sz_push_full_space(sz, sz->buf_in[i]); | |
268 | } | |
269 | sz->decoder_state = PulseSpace; | |
270 | break; | |
271 | case IgnorePulse: | |
b768d47e JW |
272 | if ((sz->buf_in[i] & SZ_SPACE_MASK) == |
273 | SZ_SPACE_MASK) { | |
7a569f52 JW |
274 | sz->decoder_state = FullSpace; |
275 | continue; | |
276 | } | |
277 | sz_push_half_space(sz, sz->buf_in[i]); | |
278 | sz->decoder_state = PulseSpace; | |
279 | break; | |
19770693 JW |
280 | } |
281 | } | |
282 | ||
56b0ec30 | 283 | ir_raw_event_handle(sz->rdev); |
19770693 JW |
284 | usb_submit_urb(urb, GFP_ATOMIC); |
285 | ||
286 | return; | |
287 | } | |
288 | ||
d8b4b582 | 289 | static struct rc_dev *streamzap_init_rc_dev(struct streamzap_ir *sz) |
8e9e6064 | 290 | { |
d8b4b582 | 291 | struct rc_dev *rdev; |
8e9e6064 JW |
292 | struct device *dev = sz->dev; |
293 | int ret; | |
294 | ||
d8b4b582 DH |
295 | rdev = rc_allocate_device(); |
296 | if (!rdev) { | |
297 | dev_err(dev, "remote dev allocation failed\n"); | |
298 | goto out; | |
8e9e6064 JW |
299 | } |
300 | ||
301 | snprintf(sz->name, sizeof(sz->name), "Streamzap PC Remote Infrared " | |
302 | "Receiver (%04x:%04x)", | |
303 | le16_to_cpu(sz->usbdev->descriptor.idVendor), | |
304 | le16_to_cpu(sz->usbdev->descriptor.idProduct)); | |
8e9e6064 JW |
305 | usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys)); |
306 | strlcat(sz->phys, "/input0", sizeof(sz->phys)); | |
8e9e6064 | 307 | |
d8b4b582 DH |
308 | rdev->input_name = sz->name; |
309 | rdev->input_phys = sz->phys; | |
5ad1a555 PB |
310 | usb_to_input_id(sz->usbdev, &rdev->input_id); |
311 | rdev->dev.parent = dev; | |
d8b4b582 DH |
312 | rdev->priv = sz; |
313 | rdev->driver_type = RC_DRIVER_IR_RAW; | |
c5540fbb | 314 | rdev->allowed_protocols = RC_BIT_ALL; |
d8b4b582 DH |
315 | rdev->driver_name = DRIVER_NAME; |
316 | rdev->map_name = RC_MAP_STREAMZAP; | |
635f76b2 | 317 | |
d8b4b582 | 318 | ret = rc_register_device(rdev); |
8e9e6064 JW |
319 | if (ret < 0) { |
320 | dev_err(dev, "remote input device register failed\n"); | |
d8b4b582 | 321 | goto out; |
8e9e6064 JW |
322 | } |
323 | ||
d8b4b582 | 324 | return rdev; |
8e9e6064 | 325 | |
d8b4b582 DH |
326 | out: |
327 | rc_free_device(rdev); | |
8e9e6064 JW |
328 | return NULL; |
329 | } | |
330 | ||
19770693 JW |
331 | /** |
332 | * streamzap_probe | |
333 | * | |
334 | * Called by usb-core to associated with a candidate device | |
335 | * On any failure the return value is the ERROR | |
336 | * On success return 0 | |
337 | */ | |
4c62e976 GKH |
338 | static int streamzap_probe(struct usb_interface *intf, |
339 | const struct usb_device_id *id) | |
19770693 | 340 | { |
8e9e6064 | 341 | struct usb_device *usbdev = interface_to_usbdev(intf); |
19770693 | 342 | struct usb_host_interface *iface_host; |
8e9e6064 | 343 | struct streamzap_ir *sz = NULL; |
19770693 JW |
344 | char buf[63], name[128] = ""; |
345 | int retval = -ENOMEM; | |
8e9e6064 | 346 | int pipe, maxp; |
19770693 JW |
347 | |
348 | /* Allocate space for device driver specific data */ | |
8e9e6064 JW |
349 | sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL); |
350 | if (!sz) | |
19770693 JW |
351 | return -ENOMEM; |
352 | ||
8e9e6064 JW |
353 | sz->usbdev = usbdev; |
354 | sz->interface = intf; | |
19770693 JW |
355 | |
356 | /* Check to ensure endpoint information matches requirements */ | |
8e9e6064 | 357 | iface_host = intf->cur_altsetting; |
19770693 JW |
358 | |
359 | if (iface_host->desc.bNumEndpoints != 1) { | |
8e9e6064 JW |
360 | dev_err(&intf->dev, "%s: Unexpected desc.bNumEndpoints (%d)\n", |
361 | __func__, iface_host->desc.bNumEndpoints); | |
19770693 JW |
362 | retval = -ENODEV; |
363 | goto free_sz; | |
364 | } | |
365 | ||
366 | sz->endpoint = &(iface_host->endpoint[0].desc); | |
5611588b | 367 | if (!usb_endpoint_dir_in(sz->endpoint)) { |
8e9e6064 JW |
368 | dev_err(&intf->dev, "%s: endpoint doesn't match input device " |
369 | "02%02x\n", __func__, sz->endpoint->bEndpointAddress); | |
19770693 JW |
370 | retval = -ENODEV; |
371 | goto free_sz; | |
372 | } | |
373 | ||
5611588b | 374 | if (!usb_endpoint_xfer_int(sz->endpoint)) { |
8e9e6064 JW |
375 | dev_err(&intf->dev, "%s: endpoint attributes don't match xfer " |
376 | "02%02x\n", __func__, sz->endpoint->bmAttributes); | |
19770693 JW |
377 | retval = -ENODEV; |
378 | goto free_sz; | |
379 | } | |
380 | ||
8e9e6064 JW |
381 | pipe = usb_rcvintpipe(usbdev, sz->endpoint->bEndpointAddress); |
382 | maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe)); | |
383 | ||
384 | if (maxp == 0) { | |
385 | dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n", | |
386 | __func__); | |
19770693 JW |
387 | retval = -ENODEV; |
388 | goto free_sz; | |
389 | } | |
390 | ||
391 | /* Allocate the USB buffer and IRQ URB */ | |
8e9e6064 JW |
392 | sz->buf_in = usb_alloc_coherent(usbdev, maxp, GFP_ATOMIC, &sz->dma_in); |
393 | if (!sz->buf_in) | |
19770693 JW |
394 | goto free_sz; |
395 | ||
396 | sz->urb_in = usb_alloc_urb(0, GFP_KERNEL); | |
8e9e6064 JW |
397 | if (!sz->urb_in) |
398 | goto free_buf_in; | |
19770693 | 399 | |
8e9e6064 JW |
400 | sz->dev = &intf->dev; |
401 | sz->buf_in_len = maxp; | |
19770693 | 402 | |
8e9e6064 JW |
403 | if (usbdev->descriptor.iManufacturer |
404 | && usb_string(usbdev, usbdev->descriptor.iManufacturer, | |
19770693 JW |
405 | buf, sizeof(buf)) > 0) |
406 | strlcpy(name, buf, sizeof(name)); | |
407 | ||
8e9e6064 JW |
408 | if (usbdev->descriptor.iProduct |
409 | && usb_string(usbdev, usbdev->descriptor.iProduct, | |
19770693 JW |
410 | buf, sizeof(buf)) > 0) |
411 | snprintf(name + strlen(name), sizeof(name) - strlen(name), | |
412 | " %s", buf); | |
413 | ||
d8b4b582 DH |
414 | sz->rdev = streamzap_init_rc_dev(sz); |
415 | if (!sz->rdev) | |
416 | goto rc_dev_fail; | |
19770693 | 417 | |
8e9e6064 JW |
418 | sz->idle = true; |
419 | sz->decoder_state = PulseSpace; | |
7a569f52 JW |
420 | /* FIXME: don't yet have a way to set this */ |
421 | sz->timeout_enabled = true; | |
b4608fae | 422 | sz->rdev->timeout = ((US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION) & |
1338c925 | 423 | IR_MAX_DURATION) | 0x03000000); |
8e9e6064 JW |
424 | #if 0 |
425 | /* not yet supported, depends on patches from maxim */ | |
426 | /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */ | |
b4608fae JW |
427 | sz->min_timeout = US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION); |
428 | sz->max_timeout = US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION); | |
8e9e6064 | 429 | #endif |
19770693 | 430 | |
8e9e6064 | 431 | do_gettimeofday(&sz->signal_start); |
19770693 | 432 | |
8e9e6064 JW |
433 | /* Complete final initialisations */ |
434 | usb_fill_int_urb(sz->urb_in, usbdev, pipe, sz->buf_in, | |
435 | maxp, (usb_complete_t)streamzap_callback, | |
436 | sz, sz->endpoint->bInterval); | |
437 | sz->urb_in->transfer_dma = sz->dma_in; | |
438 | sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
19770693 | 439 | |
8e9e6064 | 440 | usb_set_intfdata(intf, sz); |
19770693 | 441 | |
7a569f52 JW |
442 | if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) |
443 | dev_err(sz->dev, "urb submit failed\n"); | |
19770693 | 444 | |
8e9e6064 JW |
445 | dev_info(sz->dev, "Registered %s on usb%d:%d\n", name, |
446 | usbdev->bus->busnum, usbdev->devnum); | |
19770693 | 447 | |
8e9e6064 | 448 | return 0; |
19770693 | 449 | |
d8b4b582 | 450 | rc_dev_fail: |
8e9e6064 JW |
451 | usb_free_urb(sz->urb_in); |
452 | free_buf_in: | |
453 | usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in); | |
454 | free_sz: | |
455 | kfree(sz); | |
19770693 | 456 | |
8e9e6064 | 457 | return retval; |
19770693 JW |
458 | } |
459 | ||
460 | /** | |
461 | * streamzap_disconnect | |
462 | * | |
463 | * Called by the usb core when the device is removed from the system. | |
464 | * | |
465 | * This routine guarantees that the driver will not submit any more urbs | |
8e9e6064 | 466 | * by clearing dev->usbdev. It is also supposed to terminate any currently |
19770693 JW |
467 | * active urbs. Unfortunately, usb_bulk_msg(), used in streamzap_read(), |
468 | * does not provide any way to do this. | |
469 | */ | |
470 | static void streamzap_disconnect(struct usb_interface *interface) | |
471 | { | |
8e9e6064 JW |
472 | struct streamzap_ir *sz = usb_get_intfdata(interface); |
473 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
19770693 | 474 | |
8e9e6064 | 475 | usb_set_intfdata(interface, NULL); |
19770693 | 476 | |
8e9e6064 JW |
477 | if (!sz) |
478 | return; | |
19770693 | 479 | |
8e9e6064 | 480 | sz->usbdev = NULL; |
d8b4b582 | 481 | rc_unregister_device(sz->rdev); |
8e9e6064 | 482 | usb_kill_urb(sz->urb_in); |
19770693 | 483 | usb_free_urb(sz->urb_in); |
8e9e6064 | 484 | usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in); |
19770693 | 485 | |
19770693 | 486 | kfree(sz); |
19770693 JW |
487 | } |
488 | ||
489 | static int streamzap_suspend(struct usb_interface *intf, pm_message_t message) | |
490 | { | |
8e9e6064 | 491 | struct streamzap_ir *sz = usb_get_intfdata(intf); |
19770693 | 492 | |
8e9e6064 | 493 | usb_kill_urb(sz->urb_in); |
19770693 | 494 | |
19770693 JW |
495 | return 0; |
496 | } | |
497 | ||
498 | static int streamzap_resume(struct usb_interface *intf) | |
499 | { | |
8e9e6064 | 500 | struct streamzap_ir *sz = usb_get_intfdata(intf); |
19770693 | 501 | |
8e9e6064 JW |
502 | if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) { |
503 | dev_err(sz->dev, "Error sumbiting urb\n"); | |
504 | return -EIO; | |
19770693 | 505 | } |
8e9e6064 | 506 | |
19770693 JW |
507 | return 0; |
508 | } | |
509 | ||
ecb3b2b3 | 510 | module_usb_driver(streamzap_driver); |
19770693 | 511 | |
8e9e6064 | 512 | MODULE_AUTHOR("Jarod Wilson <jarod@wilsonet.com>"); |
19770693 JW |
513 | MODULE_DESCRIPTION(DRIVER_DESC); |
514 | MODULE_LICENSE("GPL"); |