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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. | |
19770693 JW |
28 | */ |
29 | ||
8e9e6064 | 30 | #include <linux/device.h> |
19770693 | 31 | #include <linux/module.h> |
8e9e6064 | 32 | #include <linux/slab.h> |
dd4c22a6 | 33 | #include <linux/ktime.h> |
635f76b2 PB |
34 | #include <linux/usb.h> |
35 | #include <linux/usb/input.h> | |
6bda9644 | 36 | #include <media/rc-core.h> |
19770693 | 37 | |
7a569f52 | 38 | #define DRIVER_VERSION "1.61" |
8e9e6064 | 39 | #define DRIVER_NAME "streamzap" |
19770693 JW |
40 | #define DRIVER_DESC "Streamzap Remote Control driver" |
41 | ||
19770693 JW |
42 | #define USB_STREAMZAP_VENDOR_ID 0x0e9c |
43 | #define USB_STREAMZAP_PRODUCT_ID 0x0000 | |
44 | ||
19770693 | 45 | /* table of devices that work with this driver */ |
5fad16b5 | 46 | static const struct usb_device_id streamzap_table[] = { |
19770693 JW |
47 | /* Streamzap Remote Control */ |
48 | { USB_DEVICE(USB_STREAMZAP_VENDOR_ID, USB_STREAMZAP_PRODUCT_ID) }, | |
49 | /* Terminating entry */ | |
50 | { } | |
51 | }; | |
52 | ||
53 | MODULE_DEVICE_TABLE(usb, streamzap_table); | |
54 | ||
b768d47e JW |
55 | #define SZ_PULSE_MASK 0xf0 |
56 | #define SZ_SPACE_MASK 0x0f | |
57 | #define SZ_TIMEOUT 0xff | |
58 | #define SZ_RESOLUTION 256 | |
19770693 JW |
59 | |
60 | /* number of samples buffered */ | |
8e9e6064 | 61 | #define SZ_BUF_LEN 128 |
19770693 JW |
62 | |
63 | enum StreamzapDecoderState { | |
64 | PulseSpace, | |
65 | FullPulse, | |
66 | FullSpace, | |
67 | IgnorePulse | |
68 | }; | |
69 | ||
8e9e6064 JW |
70 | /* structure to hold our device specific stuff */ |
71 | struct streamzap_ir { | |
8e9e6064 | 72 | /* ir-core */ |
d8b4b582 | 73 | struct rc_dev *rdev; |
8e9e6064 JW |
74 | |
75 | /* core device info */ | |
76 | struct device *dev; | |
19770693 JW |
77 | |
78 | /* usb */ | |
8e9e6064 | 79 | struct usb_device *usbdev; |
19770693 | 80 | struct usb_interface *interface; |
8e9e6064 JW |
81 | struct usb_endpoint_descriptor *endpoint; |
82 | struct urb *urb_in; | |
19770693 JW |
83 | |
84 | /* buffer & dma */ | |
85 | unsigned char *buf_in; | |
86 | dma_addr_t dma_in; | |
87 | unsigned int buf_in_len; | |
88 | ||
8e9e6064 JW |
89 | /* track what state we're in */ |
90 | enum StreamzapDecoderState decoder_state; | |
19770693 | 91 | /* tracks whether we are currently receiving some signal */ |
8e9e6064 | 92 | bool idle; |
19770693 JW |
93 | /* sum of signal lengths received since signal start */ |
94 | unsigned long sum; | |
95 | /* start time of signal; necessary for gap tracking */ | |
dd4c22a6 TR |
96 | ktime_t signal_last; |
97 | ktime_t signal_start; | |
7a569f52 | 98 | bool timeout_enabled; |
8e9e6064 JW |
99 | |
100 | char name[128]; | |
101 | char phys[64]; | |
19770693 JW |
102 | }; |
103 | ||
104 | ||
105 | /* local function prototypes */ | |
106 | static int streamzap_probe(struct usb_interface *interface, | |
107 | const struct usb_device_id *id); | |
108 | static void streamzap_disconnect(struct usb_interface *interface); | |
8e9e6064 | 109 | static void streamzap_callback(struct urb *urb); |
19770693 JW |
110 | static int streamzap_suspend(struct usb_interface *intf, pm_message_t message); |
111 | static int streamzap_resume(struct usb_interface *intf); | |
112 | ||
113 | /* usb specific object needed to register this driver with the usb subsystem */ | |
19770693 JW |
114 | static struct usb_driver streamzap_driver = { |
115 | .name = DRIVER_NAME, | |
116 | .probe = streamzap_probe, | |
117 | .disconnect = streamzap_disconnect, | |
118 | .suspend = streamzap_suspend, | |
119 | .resume = streamzap_resume, | |
120 | .id_table = streamzap_table, | |
121 | }; | |
122 | ||
7a569f52 | 123 | static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir) |
19770693 | 124 | { |
1338c925 JW |
125 | dev_dbg(sz->dev, "Storing %s with duration %u us\n", |
126 | (rawir.pulse ? "pulse" : "space"), rawir.duration); | |
d8b4b582 | 127 | ir_raw_event_store_with_filter(sz->rdev, &rawir); |
19770693 JW |
128 | } |
129 | ||
8e9e6064 JW |
130 | static void sz_push_full_pulse(struct streamzap_ir *sz, |
131 | unsigned char value) | |
19770693 | 132 | { |
4651918a | 133 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 | 134 | |
19770693 | 135 | if (sz->idle) { |
dd4c22a6 | 136 | int delta; |
19770693 JW |
137 | |
138 | sz->signal_last = sz->signal_start; | |
dd4c22a6 | 139 | sz->signal_start = ktime_get_real(); |
19770693 | 140 | |
dd4c22a6 | 141 | delta = ktime_us_delta(sz->signal_start, sz->signal_last); |
7a569f52 | 142 | rawir.pulse = false; |
dd4c22a6 | 143 | if (delta > (15 * USEC_PER_SEC)) { |
19770693 | 144 | /* really long time */ |
7a569f52 | 145 | rawir.duration = IR_MAX_DURATION; |
19770693 | 146 | } else { |
dd4c22a6 | 147 | rawir.duration = delta; |
7a569f52 | 148 | rawir.duration -= sz->sum; |
b4608fae | 149 | rawir.duration = US_TO_NS(rawir.duration); |
95cf60aa MCC |
150 | rawir.duration = (rawir.duration > IR_MAX_DURATION) ? |
151 | IR_MAX_DURATION : rawir.duration; | |
19770693 | 152 | } |
7a569f52 | 153 | sz_push(sz, rawir); |
19770693 | 154 | |
7a569f52 | 155 | sz->idle = false; |
19770693 JW |
156 | sz->sum = 0; |
157 | } | |
158 | ||
7a569f52 | 159 | rawir.pulse = true; |
b768d47e JW |
160 | rawir.duration = ((int) value) * SZ_RESOLUTION; |
161 | rawir.duration += SZ_RESOLUTION / 2; | |
7a569f52 | 162 | sz->sum += rawir.duration; |
b4608fae | 163 | rawir.duration = US_TO_NS(rawir.duration); |
95cf60aa MCC |
164 | rawir.duration = (rawir.duration > IR_MAX_DURATION) ? |
165 | IR_MAX_DURATION : rawir.duration; | |
7a569f52 | 166 | sz_push(sz, rawir); |
19770693 JW |
167 | } |
168 | ||
8e9e6064 JW |
169 | static void sz_push_half_pulse(struct streamzap_ir *sz, |
170 | unsigned char value) | |
19770693 | 171 | { |
b768d47e | 172 | sz_push_full_pulse(sz, (value & SZ_PULSE_MASK) >> 4); |
19770693 JW |
173 | } |
174 | ||
8e9e6064 JW |
175 | static void sz_push_full_space(struct streamzap_ir *sz, |
176 | unsigned char value) | |
19770693 | 177 | { |
4651918a | 178 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 JW |
179 | |
180 | rawir.pulse = false; | |
b768d47e JW |
181 | rawir.duration = ((int) value) * SZ_RESOLUTION; |
182 | rawir.duration += SZ_RESOLUTION / 2; | |
7a569f52 | 183 | sz->sum += rawir.duration; |
b4608fae | 184 | rawir.duration = US_TO_NS(rawir.duration); |
7a569f52 | 185 | sz_push(sz, rawir); |
19770693 JW |
186 | } |
187 | ||
8e9e6064 JW |
188 | static void sz_push_half_space(struct streamzap_ir *sz, |
189 | unsigned long value) | |
19770693 | 190 | { |
b768d47e | 191 | sz_push_full_space(sz, value & SZ_SPACE_MASK); |
19770693 JW |
192 | } |
193 | ||
cba862dc | 194 | /* |
8e9e6064 | 195 | * streamzap_callback - usb IRQ handler callback |
19770693 JW |
196 | * |
197 | * This procedure is invoked on reception of data from | |
198 | * the usb remote. | |
199 | */ | |
8e9e6064 | 200 | static void streamzap_callback(struct urb *urb) |
19770693 | 201 | { |
8e9e6064 JW |
202 | struct streamzap_ir *sz; |
203 | unsigned int i; | |
204 | int len; | |
19770693 JW |
205 | |
206 | if (!urb) | |
207 | return; | |
208 | ||
209 | sz = urb->context; | |
210 | len = urb->actual_length; | |
211 | ||
212 | switch (urb->status) { | |
213 | case -ECONNRESET: | |
214 | case -ENOENT: | |
215 | case -ESHUTDOWN: | |
216 | /* | |
217 | * this urb is terminated, clean up. | |
218 | * sz might already be invalid at this point | |
219 | */ | |
8e9e6064 | 220 | dev_err(sz->dev, "urb terminated, status: %d\n", urb->status); |
19770693 JW |
221 | return; |
222 | default: | |
223 | break; | |
224 | } | |
225 | ||
8e9e6064 | 226 | dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len); |
7a569f52 | 227 | for (i = 0; i < len; i++) { |
1338c925 | 228 | dev_dbg(sz->dev, "sz->buf_in[%d]: %x\n", |
7a569f52 JW |
229 | i, (unsigned char)sz->buf_in[i]); |
230 | switch (sz->decoder_state) { | |
231 | case PulseSpace: | |
b768d47e JW |
232 | if ((sz->buf_in[i] & SZ_PULSE_MASK) == |
233 | SZ_PULSE_MASK) { | |
7a569f52 JW |
234 | sz->decoder_state = FullPulse; |
235 | continue; | |
b768d47e JW |
236 | } else if ((sz->buf_in[i] & SZ_SPACE_MASK) |
237 | == SZ_SPACE_MASK) { | |
7a569f52 JW |
238 | sz_push_half_pulse(sz, sz->buf_in[i]); |
239 | sz->decoder_state = FullSpace; | |
240 | continue; | |
241 | } else { | |
242 | sz_push_half_pulse(sz, sz->buf_in[i]); | |
8e9e6064 | 243 | sz_push_half_space(sz, sz->buf_in[i]); |
19770693 | 244 | } |
7a569f52 JW |
245 | break; |
246 | case FullPulse: | |
247 | sz_push_full_pulse(sz, sz->buf_in[i]); | |
248 | sz->decoder_state = IgnorePulse; | |
249 | break; | |
250 | case FullSpace: | |
b768d47e | 251 | if (sz->buf_in[i] == SZ_TIMEOUT) { |
4651918a | 252 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 JW |
253 | |
254 | rawir.pulse = false; | |
d8b4b582 | 255 | rawir.duration = sz->rdev->timeout; |
7a569f52 JW |
256 | sz->idle = true; |
257 | if (sz->timeout_enabled) | |
258 | sz_push(sz, rawir); | |
d8b4b582 | 259 | ir_raw_event_handle(sz->rdev); |
56b0ec30 | 260 | ir_raw_event_reset(sz->rdev); |
7a569f52 JW |
261 | } else { |
262 | sz_push_full_space(sz, sz->buf_in[i]); | |
263 | } | |
264 | sz->decoder_state = PulseSpace; | |
265 | break; | |
266 | case IgnorePulse: | |
b768d47e JW |
267 | if ((sz->buf_in[i] & SZ_SPACE_MASK) == |
268 | SZ_SPACE_MASK) { | |
7a569f52 JW |
269 | sz->decoder_state = FullSpace; |
270 | continue; | |
271 | } | |
272 | sz_push_half_space(sz, sz->buf_in[i]); | |
273 | sz->decoder_state = PulseSpace; | |
274 | break; | |
19770693 JW |
275 | } |
276 | } | |
277 | ||
56b0ec30 | 278 | ir_raw_event_handle(sz->rdev); |
19770693 JW |
279 | usb_submit_urb(urb, GFP_ATOMIC); |
280 | ||
281 | return; | |
282 | } | |
283 | ||
d8b4b582 | 284 | static struct rc_dev *streamzap_init_rc_dev(struct streamzap_ir *sz) |
8e9e6064 | 285 | { |
d8b4b582 | 286 | struct rc_dev *rdev; |
8e9e6064 JW |
287 | struct device *dev = sz->dev; |
288 | int ret; | |
289 | ||
0f7499fd | 290 | rdev = rc_allocate_device(RC_DRIVER_IR_RAW); |
d8b4b582 DH |
291 | if (!rdev) { |
292 | dev_err(dev, "remote dev allocation failed\n"); | |
293 | goto out; | |
8e9e6064 JW |
294 | } |
295 | ||
25ec587c | 296 | snprintf(sz->name, sizeof(sz->name), "Streamzap PC Remote Infrared Receiver (%04x:%04x)", |
8e9e6064 JW |
297 | le16_to_cpu(sz->usbdev->descriptor.idVendor), |
298 | le16_to_cpu(sz->usbdev->descriptor.idProduct)); | |
8e9e6064 JW |
299 | usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys)); |
300 | strlcat(sz->phys, "/input0", sizeof(sz->phys)); | |
8e9e6064 | 301 | |
518f4b26 | 302 | rdev->device_name = sz->name; |
d8b4b582 | 303 | rdev->input_phys = sz->phys; |
5ad1a555 PB |
304 | usb_to_input_id(sz->usbdev, &rdev->input_id); |
305 | rdev->dev.parent = dev; | |
d8b4b582 | 306 | rdev->priv = sz; |
6d741bfe | 307 | rdev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER; |
d8b4b582 DH |
308 | rdev->driver_name = DRIVER_NAME; |
309 | rdev->map_name = RC_MAP_STREAMZAP; | |
635f76b2 | 310 | |
d8b4b582 | 311 | ret = rc_register_device(rdev); |
8e9e6064 JW |
312 | if (ret < 0) { |
313 | dev_err(dev, "remote input device register failed\n"); | |
d8b4b582 | 314 | goto out; |
8e9e6064 JW |
315 | } |
316 | ||
d8b4b582 | 317 | return rdev; |
8e9e6064 | 318 | |
d8b4b582 DH |
319 | out: |
320 | rc_free_device(rdev); | |
8e9e6064 JW |
321 | return NULL; |
322 | } | |
323 | ||
cba862dc | 324 | /* |
19770693 JW |
325 | * streamzap_probe |
326 | * | |
327 | * Called by usb-core to associated with a candidate device | |
328 | * On any failure the return value is the ERROR | |
329 | * On success return 0 | |
330 | */ | |
4c62e976 GKH |
331 | static int streamzap_probe(struct usb_interface *intf, |
332 | const struct usb_device_id *id) | |
19770693 | 333 | { |
8e9e6064 | 334 | struct usb_device *usbdev = interface_to_usbdev(intf); |
19770693 | 335 | struct usb_host_interface *iface_host; |
8e9e6064 | 336 | struct streamzap_ir *sz = NULL; |
19770693 JW |
337 | char buf[63], name[128] = ""; |
338 | int retval = -ENOMEM; | |
8e9e6064 | 339 | int pipe, maxp; |
19770693 JW |
340 | |
341 | /* Allocate space for device driver specific data */ | |
8e9e6064 JW |
342 | sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL); |
343 | if (!sz) | |
19770693 JW |
344 | return -ENOMEM; |
345 | ||
8e9e6064 JW |
346 | sz->usbdev = usbdev; |
347 | sz->interface = intf; | |
19770693 JW |
348 | |
349 | /* Check to ensure endpoint information matches requirements */ | |
8e9e6064 | 350 | iface_host = intf->cur_altsetting; |
19770693 JW |
351 | |
352 | if (iface_host->desc.bNumEndpoints != 1) { | |
8e9e6064 JW |
353 | dev_err(&intf->dev, "%s: Unexpected desc.bNumEndpoints (%d)\n", |
354 | __func__, iface_host->desc.bNumEndpoints); | |
19770693 JW |
355 | retval = -ENODEV; |
356 | goto free_sz; | |
357 | } | |
358 | ||
359 | sz->endpoint = &(iface_host->endpoint[0].desc); | |
5611588b | 360 | if (!usb_endpoint_dir_in(sz->endpoint)) { |
25ec587c MCC |
361 | dev_err(&intf->dev, "%s: endpoint doesn't match input device 02%02x\n", |
362 | __func__, sz->endpoint->bEndpointAddress); | |
19770693 JW |
363 | retval = -ENODEV; |
364 | goto free_sz; | |
365 | } | |
366 | ||
5611588b | 367 | if (!usb_endpoint_xfer_int(sz->endpoint)) { |
25ec587c MCC |
368 | dev_err(&intf->dev, "%s: endpoint attributes don't match xfer 02%02x\n", |
369 | __func__, sz->endpoint->bmAttributes); | |
19770693 JW |
370 | retval = -ENODEV; |
371 | goto free_sz; | |
372 | } | |
373 | ||
8e9e6064 JW |
374 | pipe = usb_rcvintpipe(usbdev, sz->endpoint->bEndpointAddress); |
375 | maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe)); | |
376 | ||
377 | if (maxp == 0) { | |
378 | dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n", | |
379 | __func__); | |
19770693 JW |
380 | retval = -ENODEV; |
381 | goto free_sz; | |
382 | } | |
383 | ||
384 | /* Allocate the USB buffer and IRQ URB */ | |
8e9e6064 JW |
385 | sz->buf_in = usb_alloc_coherent(usbdev, maxp, GFP_ATOMIC, &sz->dma_in); |
386 | if (!sz->buf_in) | |
19770693 JW |
387 | goto free_sz; |
388 | ||
389 | sz->urb_in = usb_alloc_urb(0, GFP_KERNEL); | |
8e9e6064 JW |
390 | if (!sz->urb_in) |
391 | goto free_buf_in; | |
19770693 | 392 | |
8e9e6064 JW |
393 | sz->dev = &intf->dev; |
394 | sz->buf_in_len = maxp; | |
19770693 | 395 | |
8e9e6064 JW |
396 | if (usbdev->descriptor.iManufacturer |
397 | && usb_string(usbdev, usbdev->descriptor.iManufacturer, | |
19770693 JW |
398 | buf, sizeof(buf)) > 0) |
399 | strlcpy(name, buf, sizeof(name)); | |
400 | ||
8e9e6064 JW |
401 | if (usbdev->descriptor.iProduct |
402 | && usb_string(usbdev, usbdev->descriptor.iProduct, | |
19770693 JW |
403 | buf, sizeof(buf)) > 0) |
404 | snprintf(name + strlen(name), sizeof(name) - strlen(name), | |
405 | " %s", buf); | |
406 | ||
d8b4b582 DH |
407 | sz->rdev = streamzap_init_rc_dev(sz); |
408 | if (!sz->rdev) | |
409 | goto rc_dev_fail; | |
19770693 | 410 | |
8e9e6064 JW |
411 | sz->idle = true; |
412 | sz->decoder_state = PulseSpace; | |
7a569f52 JW |
413 | /* FIXME: don't yet have a way to set this */ |
414 | sz->timeout_enabled = true; | |
b4608fae | 415 | sz->rdev->timeout = ((US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION) & |
1338c925 | 416 | IR_MAX_DURATION) | 0x03000000); |
8e9e6064 JW |
417 | #if 0 |
418 | /* not yet supported, depends on patches from maxim */ | |
419 | /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */ | |
b4608fae JW |
420 | sz->min_timeout = US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION); |
421 | sz->max_timeout = US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION); | |
8e9e6064 | 422 | #endif |
19770693 | 423 | |
dd4c22a6 | 424 | sz->signal_start = ktime_get_real(); |
19770693 | 425 | |
8e9e6064 JW |
426 | /* Complete final initialisations */ |
427 | usb_fill_int_urb(sz->urb_in, usbdev, pipe, sz->buf_in, | |
428 | maxp, (usb_complete_t)streamzap_callback, | |
429 | sz, sz->endpoint->bInterval); | |
430 | sz->urb_in->transfer_dma = sz->dma_in; | |
431 | sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
19770693 | 432 | |
8e9e6064 | 433 | usb_set_intfdata(intf, sz); |
19770693 | 434 | |
7a569f52 JW |
435 | if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) |
436 | dev_err(sz->dev, "urb submit failed\n"); | |
19770693 | 437 | |
8e9e6064 JW |
438 | dev_info(sz->dev, "Registered %s on usb%d:%d\n", name, |
439 | usbdev->bus->busnum, usbdev->devnum); | |
19770693 | 440 | |
8e9e6064 | 441 | return 0; |
19770693 | 442 | |
d8b4b582 | 443 | rc_dev_fail: |
8e9e6064 JW |
444 | usb_free_urb(sz->urb_in); |
445 | free_buf_in: | |
446 | usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in); | |
447 | free_sz: | |
448 | kfree(sz); | |
19770693 | 449 | |
8e9e6064 | 450 | return retval; |
19770693 JW |
451 | } |
452 | ||
cba862dc | 453 | /* |
19770693 JW |
454 | * streamzap_disconnect |
455 | * | |
456 | * Called by the usb core when the device is removed from the system. | |
457 | * | |
458 | * This routine guarantees that the driver will not submit any more urbs | |
8e9e6064 | 459 | * by clearing dev->usbdev. It is also supposed to terminate any currently |
19770693 JW |
460 | * active urbs. Unfortunately, usb_bulk_msg(), used in streamzap_read(), |
461 | * does not provide any way to do this. | |
462 | */ | |
463 | static void streamzap_disconnect(struct usb_interface *interface) | |
464 | { | |
8e9e6064 JW |
465 | struct streamzap_ir *sz = usb_get_intfdata(interface); |
466 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
19770693 | 467 | |
8e9e6064 | 468 | usb_set_intfdata(interface, NULL); |
19770693 | 469 | |
8e9e6064 JW |
470 | if (!sz) |
471 | return; | |
19770693 | 472 | |
8e9e6064 | 473 | sz->usbdev = NULL; |
d8b4b582 | 474 | rc_unregister_device(sz->rdev); |
8e9e6064 | 475 | usb_kill_urb(sz->urb_in); |
19770693 | 476 | usb_free_urb(sz->urb_in); |
8e9e6064 | 477 | usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in); |
19770693 | 478 | |
19770693 | 479 | kfree(sz); |
19770693 JW |
480 | } |
481 | ||
482 | static int streamzap_suspend(struct usb_interface *intf, pm_message_t message) | |
483 | { | |
8e9e6064 | 484 | struct streamzap_ir *sz = usb_get_intfdata(intf); |
19770693 | 485 | |
8e9e6064 | 486 | usb_kill_urb(sz->urb_in); |
19770693 | 487 | |
19770693 JW |
488 | return 0; |
489 | } | |
490 | ||
491 | static int streamzap_resume(struct usb_interface *intf) | |
492 | { | |
8e9e6064 | 493 | struct streamzap_ir *sz = usb_get_intfdata(intf); |
19770693 | 494 | |
8e9e6064 | 495 | if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) { |
1c195cb1 | 496 | dev_err(sz->dev, "Error submitting urb\n"); |
8e9e6064 | 497 | return -EIO; |
19770693 | 498 | } |
8e9e6064 | 499 | |
19770693 JW |
500 | return 0; |
501 | } | |
502 | ||
ecb3b2b3 | 503 | module_usb_driver(streamzap_driver); |
19770693 | 504 | |
8e9e6064 | 505 | MODULE_AUTHOR("Jarod Wilson <jarod@wilsonet.com>"); |
19770693 JW |
506 | MODULE_DESCRIPTION(DRIVER_DESC); |
507 | MODULE_LICENSE("GPL"); |