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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> |
19770693 | 37 | #include <linux/usb.h> |
8e9e6064 JW |
38 | #include <linux/input.h> |
39 | #include <media/ir-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 | ||
8e9e6064 JW |
45 | #ifdef CONFIG_USB_DEBUG |
46 | static int debug = 1; | |
47 | #else | |
19770693 | 48 | static int debug; |
8e9e6064 | 49 | #endif |
19770693 JW |
50 | |
51 | #define USB_STREAMZAP_VENDOR_ID 0x0e9c | |
52 | #define USB_STREAMZAP_PRODUCT_ID 0x0000 | |
53 | ||
19770693 JW |
54 | /* table of devices that work with this driver */ |
55 | static struct usb_device_id streamzap_table[] = { | |
56 | /* Streamzap Remote Control */ | |
57 | { USB_DEVICE(USB_STREAMZAP_VENDOR_ID, USB_STREAMZAP_PRODUCT_ID) }, | |
58 | /* Terminating entry */ | |
59 | { } | |
60 | }; | |
61 | ||
62 | MODULE_DEVICE_TABLE(usb, streamzap_table); | |
63 | ||
64 | #define STREAMZAP_PULSE_MASK 0xf0 | |
65 | #define STREAMZAP_SPACE_MASK 0x0f | |
66 | #define STREAMZAP_TIMEOUT 0xff | |
67 | #define STREAMZAP_RESOLUTION 256 | |
68 | ||
69 | /* number of samples buffered */ | |
8e9e6064 | 70 | #define SZ_BUF_LEN 128 |
19770693 | 71 | |
7a569f52 JW |
72 | /* from ir-rc5-sz-decoder.c */ |
73 | #ifdef CONFIG_IR_RC5_SZ_DECODER_MODULE | |
74 | #define load_rc5_sz_decode() request_module("ir-rc5-sz-decoder") | |
75 | #else | |
76 | #define load_rc5_sz_decode() 0 | |
77 | #endif | |
78 | ||
19770693 JW |
79 | enum StreamzapDecoderState { |
80 | PulseSpace, | |
81 | FullPulse, | |
82 | FullSpace, | |
83 | IgnorePulse | |
84 | }; | |
85 | ||
8e9e6064 JW |
86 | /* structure to hold our device specific stuff */ |
87 | struct streamzap_ir { | |
88 | ||
89 | /* ir-core */ | |
90 | struct ir_dev_props *props; | |
8e9e6064 JW |
91 | |
92 | /* core device info */ | |
93 | struct device *dev; | |
94 | struct input_dev *idev; | |
19770693 JW |
95 | |
96 | /* usb */ | |
8e9e6064 | 97 | struct usb_device *usbdev; |
19770693 | 98 | struct usb_interface *interface; |
8e9e6064 JW |
99 | struct usb_endpoint_descriptor *endpoint; |
100 | struct urb *urb_in; | |
19770693 JW |
101 | |
102 | /* buffer & dma */ | |
103 | unsigned char *buf_in; | |
104 | dma_addr_t dma_in; | |
105 | unsigned int buf_in_len; | |
106 | ||
8e9e6064 JW |
107 | /* track what state we're in */ |
108 | enum StreamzapDecoderState decoder_state; | |
19770693 | 109 | /* tracks whether we are currently receiving some signal */ |
8e9e6064 | 110 | bool idle; |
19770693 JW |
111 | /* sum of signal lengths received since signal start */ |
112 | unsigned long sum; | |
113 | /* start time of signal; necessary for gap tracking */ | |
114 | struct timeval signal_last; | |
115 | struct timeval signal_start; | |
7a569f52 | 116 | bool timeout_enabled; |
8e9e6064 JW |
117 | |
118 | char name[128]; | |
119 | char phys[64]; | |
19770693 JW |
120 | }; |
121 | ||
122 | ||
123 | /* local function prototypes */ | |
124 | static int streamzap_probe(struct usb_interface *interface, | |
125 | const struct usb_device_id *id); | |
126 | static void streamzap_disconnect(struct usb_interface *interface); | |
8e9e6064 | 127 | static void streamzap_callback(struct urb *urb); |
19770693 JW |
128 | static int streamzap_suspend(struct usb_interface *intf, pm_message_t message); |
129 | static int streamzap_resume(struct usb_interface *intf); | |
130 | ||
131 | /* usb specific object needed to register this driver with the usb subsystem */ | |
19770693 JW |
132 | static struct usb_driver streamzap_driver = { |
133 | .name = DRIVER_NAME, | |
134 | .probe = streamzap_probe, | |
135 | .disconnect = streamzap_disconnect, | |
136 | .suspend = streamzap_suspend, | |
137 | .resume = streamzap_resume, | |
138 | .id_table = streamzap_table, | |
139 | }; | |
140 | ||
7a569f52 | 141 | static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir) |
19770693 | 142 | { |
7a569f52 | 143 | ir_raw_event_store(sz->idev, &rawir); |
19770693 JW |
144 | } |
145 | ||
8e9e6064 JW |
146 | static void sz_push_full_pulse(struct streamzap_ir *sz, |
147 | unsigned char value) | |
19770693 | 148 | { |
7a569f52 JW |
149 | struct ir_raw_event rawir; |
150 | ||
19770693 JW |
151 | if (sz->idle) { |
152 | long deltv; | |
19770693 JW |
153 | |
154 | sz->signal_last = sz->signal_start; | |
155 | do_gettimeofday(&sz->signal_start); | |
156 | ||
8e9e6064 | 157 | deltv = sz->signal_start.tv_sec - sz->signal_last.tv_sec; |
7a569f52 | 158 | rawir.pulse = false; |
19770693 JW |
159 | if (deltv > 15) { |
160 | /* really long time */ | |
7a569f52 | 161 | rawir.duration = IR_MAX_DURATION; |
19770693 | 162 | } else { |
7a569f52 | 163 | rawir.duration = (int)(deltv * 1000000 + |
8e9e6064 JW |
164 | sz->signal_start.tv_usec - |
165 | sz->signal_last.tv_usec); | |
7a569f52 JW |
166 | rawir.duration -= sz->sum; |
167 | rawir.duration *= 1000; | |
168 | rawir.duration &= IR_MAX_DURATION; | |
19770693 | 169 | } |
7a569f52 JW |
170 | dev_dbg(sz->dev, "ls %u\n", rawir.duration); |
171 | sz_push(sz, rawir); | |
19770693 | 172 | |
7a569f52 | 173 | sz->idle = false; |
19770693 JW |
174 | sz->sum = 0; |
175 | } | |
176 | ||
7a569f52 JW |
177 | rawir.pulse = true; |
178 | rawir.duration = ((int) value) * STREAMZAP_RESOLUTION; | |
179 | rawir.duration += STREAMZAP_RESOLUTION / 2; | |
180 | sz->sum += rawir.duration; | |
181 | rawir.duration *= 1000; | |
182 | rawir.duration &= IR_MAX_DURATION; | |
183 | dev_dbg(sz->dev, "p %u\n", rawir.duration); | |
184 | sz_push(sz, rawir); | |
19770693 JW |
185 | } |
186 | ||
8e9e6064 JW |
187 | static void sz_push_half_pulse(struct streamzap_ir *sz, |
188 | unsigned char value) | |
19770693 | 189 | { |
8e9e6064 | 190 | sz_push_full_pulse(sz, (value & STREAMZAP_PULSE_MASK) >> 4); |
19770693 JW |
191 | } |
192 | ||
8e9e6064 JW |
193 | static void sz_push_full_space(struct streamzap_ir *sz, |
194 | unsigned char value) | |
19770693 | 195 | { |
7a569f52 JW |
196 | struct ir_raw_event rawir; |
197 | ||
198 | rawir.pulse = false; | |
199 | rawir.duration = ((int) value) * STREAMZAP_RESOLUTION; | |
200 | rawir.duration += STREAMZAP_RESOLUTION / 2; | |
201 | sz->sum += rawir.duration; | |
202 | rawir.duration *= 1000; | |
203 | dev_dbg(sz->dev, "s %u\n", rawir.duration); | |
204 | sz_push(sz, rawir); | |
19770693 JW |
205 | } |
206 | ||
8e9e6064 JW |
207 | static void sz_push_half_space(struct streamzap_ir *sz, |
208 | unsigned long value) | |
19770693 | 209 | { |
8e9e6064 | 210 | sz_push_full_space(sz, value & STREAMZAP_SPACE_MASK); |
19770693 JW |
211 | } |
212 | ||
213 | /** | |
8e9e6064 | 214 | * streamzap_callback - usb IRQ handler callback |
19770693 JW |
215 | * |
216 | * This procedure is invoked on reception of data from | |
217 | * the usb remote. | |
218 | */ | |
8e9e6064 | 219 | static void streamzap_callback(struct urb *urb) |
19770693 | 220 | { |
8e9e6064 JW |
221 | struct streamzap_ir *sz; |
222 | unsigned int i; | |
223 | int len; | |
8e9e6064 JW |
224 | static int timeout = (((STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION) & |
225 | IR_MAX_DURATION) | 0x03000000); | |
19770693 JW |
226 | |
227 | if (!urb) | |
228 | return; | |
229 | ||
230 | sz = urb->context; | |
231 | len = urb->actual_length; | |
232 | ||
233 | switch (urb->status) { | |
234 | case -ECONNRESET: | |
235 | case -ENOENT: | |
236 | case -ESHUTDOWN: | |
237 | /* | |
238 | * this urb is terminated, clean up. | |
239 | * sz might already be invalid at this point | |
240 | */ | |
8e9e6064 | 241 | dev_err(sz->dev, "urb terminated, status: %d\n", urb->status); |
19770693 JW |
242 | return; |
243 | default: | |
244 | break; | |
245 | } | |
246 | ||
8e9e6064 | 247 | dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len); |
7a569f52 JW |
248 | for (i = 0; i < len; i++) { |
249 | dev_dbg(sz->dev, "sz idx %d: %x\n", | |
250 | i, (unsigned char)sz->buf_in[i]); | |
251 | switch (sz->decoder_state) { | |
252 | case PulseSpace: | |
253 | if ((sz->buf_in[i] & STREAMZAP_PULSE_MASK) == | |
254 | STREAMZAP_PULSE_MASK) { | |
255 | sz->decoder_state = FullPulse; | |
256 | continue; | |
257 | } else if ((sz->buf_in[i] & STREAMZAP_SPACE_MASK) | |
258 | == STREAMZAP_SPACE_MASK) { | |
259 | sz_push_half_pulse(sz, sz->buf_in[i]); | |
260 | sz->decoder_state = FullSpace; | |
261 | continue; | |
262 | } else { | |
263 | sz_push_half_pulse(sz, sz->buf_in[i]); | |
8e9e6064 | 264 | sz_push_half_space(sz, sz->buf_in[i]); |
19770693 | 265 | } |
7a569f52 JW |
266 | break; |
267 | case FullPulse: | |
268 | sz_push_full_pulse(sz, sz->buf_in[i]); | |
269 | sz->decoder_state = IgnorePulse; | |
270 | break; | |
271 | case FullSpace: | |
272 | if (sz->buf_in[i] == STREAMZAP_TIMEOUT) { | |
273 | struct ir_raw_event rawir; | |
274 | ||
275 | rawir.pulse = false; | |
276 | rawir.duration = timeout * 1000; | |
277 | sz->idle = true; | |
278 | if (sz->timeout_enabled) | |
279 | sz_push(sz, rawir); | |
280 | ir_raw_event_handle(sz->idev); | |
281 | } else { | |
282 | sz_push_full_space(sz, sz->buf_in[i]); | |
283 | } | |
284 | sz->decoder_state = PulseSpace; | |
285 | break; | |
286 | case IgnorePulse: | |
287 | if ((sz->buf_in[i] & STREAMZAP_SPACE_MASK) == | |
288 | STREAMZAP_SPACE_MASK) { | |
289 | sz->decoder_state = FullSpace; | |
290 | continue; | |
291 | } | |
292 | sz_push_half_space(sz, sz->buf_in[i]); | |
293 | sz->decoder_state = PulseSpace; | |
294 | break; | |
19770693 JW |
295 | } |
296 | } | |
297 | ||
298 | usb_submit_urb(urb, GFP_ATOMIC); | |
299 | ||
300 | return; | |
301 | } | |
302 | ||
8e9e6064 JW |
303 | static struct input_dev *streamzap_init_input_dev(struct streamzap_ir *sz) |
304 | { | |
305 | struct input_dev *idev; | |
306 | struct ir_dev_props *props; | |
307 | struct device *dev = sz->dev; | |
308 | int ret; | |
309 | ||
310 | idev = input_allocate_device(); | |
311 | if (!idev) { | |
312 | dev_err(dev, "remote input dev allocation failed\n"); | |
313 | goto idev_alloc_failed; | |
314 | } | |
315 | ||
316 | props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL); | |
317 | if (!props) { | |
318 | dev_err(dev, "remote ir dev props allocation failed\n"); | |
319 | goto props_alloc_failed; | |
320 | } | |
321 | ||
322 | snprintf(sz->name, sizeof(sz->name), "Streamzap PC Remote Infrared " | |
323 | "Receiver (%04x:%04x)", | |
324 | le16_to_cpu(sz->usbdev->descriptor.idVendor), | |
325 | le16_to_cpu(sz->usbdev->descriptor.idProduct)); | |
326 | ||
327 | idev->name = sz->name; | |
328 | usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys)); | |
329 | strlcat(sz->phys, "/input0", sizeof(sz->phys)); | |
330 | idev->phys = sz->phys; | |
331 | ||
332 | props->priv = sz; | |
333 | props->driver_type = RC_DRIVER_IR_RAW; | |
7a569f52 | 334 | props->allowed_protos = IR_TYPE_ALL; |
8e9e6064 JW |
335 | |
336 | sz->props = props; | |
337 | ||
7a569f52 | 338 | ret = ir_input_register(idev, RC_MAP_STREAMZAP, props, DRIVER_NAME); |
8e9e6064 JW |
339 | if (ret < 0) { |
340 | dev_err(dev, "remote input device register failed\n"); | |
341 | goto irdev_failed; | |
342 | } | |
343 | ||
344 | return idev; | |
345 | ||
346 | irdev_failed: | |
347 | kfree(props); | |
348 | props_alloc_failed: | |
349 | input_free_device(idev); | |
350 | idev_alloc_failed: | |
351 | return NULL; | |
352 | } | |
353 | ||
19770693 JW |
354 | /** |
355 | * streamzap_probe | |
356 | * | |
357 | * Called by usb-core to associated with a candidate device | |
358 | * On any failure the return value is the ERROR | |
359 | * On success return 0 | |
360 | */ | |
8e9e6064 JW |
361 | static int __devinit streamzap_probe(struct usb_interface *intf, |
362 | const struct usb_device_id *id) | |
19770693 | 363 | { |
8e9e6064 | 364 | struct usb_device *usbdev = interface_to_usbdev(intf); |
19770693 | 365 | struct usb_host_interface *iface_host; |
8e9e6064 | 366 | struct streamzap_ir *sz = NULL; |
19770693 JW |
367 | char buf[63], name[128] = ""; |
368 | int retval = -ENOMEM; | |
8e9e6064 | 369 | int pipe, maxp; |
19770693 JW |
370 | |
371 | /* Allocate space for device driver specific data */ | |
8e9e6064 JW |
372 | sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL); |
373 | if (!sz) | |
19770693 JW |
374 | return -ENOMEM; |
375 | ||
8e9e6064 JW |
376 | sz->usbdev = usbdev; |
377 | sz->interface = intf; | |
19770693 JW |
378 | |
379 | /* Check to ensure endpoint information matches requirements */ | |
8e9e6064 | 380 | iface_host = intf->cur_altsetting; |
19770693 JW |
381 | |
382 | if (iface_host->desc.bNumEndpoints != 1) { | |
8e9e6064 JW |
383 | dev_err(&intf->dev, "%s: Unexpected desc.bNumEndpoints (%d)\n", |
384 | __func__, iface_host->desc.bNumEndpoints); | |
19770693 JW |
385 | retval = -ENODEV; |
386 | goto free_sz; | |
387 | } | |
388 | ||
389 | sz->endpoint = &(iface_host->endpoint[0].desc); | |
390 | if ((sz->endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) | |
391 | != USB_DIR_IN) { | |
8e9e6064 JW |
392 | dev_err(&intf->dev, "%s: endpoint doesn't match input device " |
393 | "02%02x\n", __func__, sz->endpoint->bEndpointAddress); | |
19770693 JW |
394 | retval = -ENODEV; |
395 | goto free_sz; | |
396 | } | |
397 | ||
398 | if ((sz->endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) | |
399 | != USB_ENDPOINT_XFER_INT) { | |
8e9e6064 JW |
400 | dev_err(&intf->dev, "%s: endpoint attributes don't match xfer " |
401 | "02%02x\n", __func__, sz->endpoint->bmAttributes); | |
19770693 JW |
402 | retval = -ENODEV; |
403 | goto free_sz; | |
404 | } | |
405 | ||
8e9e6064 JW |
406 | pipe = usb_rcvintpipe(usbdev, sz->endpoint->bEndpointAddress); |
407 | maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe)); | |
408 | ||
409 | if (maxp == 0) { | |
410 | dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n", | |
411 | __func__); | |
19770693 JW |
412 | retval = -ENODEV; |
413 | goto free_sz; | |
414 | } | |
415 | ||
416 | /* Allocate the USB buffer and IRQ URB */ | |
8e9e6064 JW |
417 | sz->buf_in = usb_alloc_coherent(usbdev, maxp, GFP_ATOMIC, &sz->dma_in); |
418 | if (!sz->buf_in) | |
19770693 JW |
419 | goto free_sz; |
420 | ||
421 | sz->urb_in = usb_alloc_urb(0, GFP_KERNEL); | |
8e9e6064 JW |
422 | if (!sz->urb_in) |
423 | goto free_buf_in; | |
19770693 | 424 | |
8e9e6064 JW |
425 | sz->dev = &intf->dev; |
426 | sz->buf_in_len = maxp; | |
19770693 | 427 | |
8e9e6064 JW |
428 | if (usbdev->descriptor.iManufacturer |
429 | && usb_string(usbdev, usbdev->descriptor.iManufacturer, | |
19770693 JW |
430 | buf, sizeof(buf)) > 0) |
431 | strlcpy(name, buf, sizeof(name)); | |
432 | ||
8e9e6064 JW |
433 | if (usbdev->descriptor.iProduct |
434 | && usb_string(usbdev, usbdev->descriptor.iProduct, | |
19770693 JW |
435 | buf, sizeof(buf)) > 0) |
436 | snprintf(name + strlen(name), sizeof(name) - strlen(name), | |
437 | " %s", buf); | |
438 | ||
8e9e6064 JW |
439 | sz->idev = streamzap_init_input_dev(sz); |
440 | if (!sz->idev) | |
441 | goto input_dev_fail; | |
19770693 | 442 | |
8e9e6064 JW |
443 | sz->idle = true; |
444 | sz->decoder_state = PulseSpace; | |
7a569f52 JW |
445 | /* FIXME: don't yet have a way to set this */ |
446 | sz->timeout_enabled = true; | |
8e9e6064 JW |
447 | #if 0 |
448 | /* not yet supported, depends on patches from maxim */ | |
449 | /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */ | |
8e9e6064 JW |
450 | sz->min_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION * 1000; |
451 | sz->max_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION * 1000; | |
452 | #endif | |
19770693 | 453 | |
8e9e6064 | 454 | do_gettimeofday(&sz->signal_start); |
19770693 | 455 | |
8e9e6064 JW |
456 | /* Complete final initialisations */ |
457 | usb_fill_int_urb(sz->urb_in, usbdev, pipe, sz->buf_in, | |
458 | maxp, (usb_complete_t)streamzap_callback, | |
459 | sz, sz->endpoint->bInterval); | |
460 | sz->urb_in->transfer_dma = sz->dma_in; | |
461 | sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
19770693 | 462 | |
8e9e6064 | 463 | usb_set_intfdata(intf, sz); |
19770693 | 464 | |
7a569f52 JW |
465 | if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) |
466 | dev_err(sz->dev, "urb submit failed\n"); | |
19770693 | 467 | |
8e9e6064 JW |
468 | dev_info(sz->dev, "Registered %s on usb%d:%d\n", name, |
469 | usbdev->bus->busnum, usbdev->devnum); | |
19770693 | 470 | |
7a569f52 JW |
471 | /* Load the streamzap not-quite-rc5 decoder too */ |
472 | load_rc5_sz_decode(); | |
473 | ||
8e9e6064 | 474 | return 0; |
19770693 | 475 | |
8e9e6064 | 476 | input_dev_fail: |
8e9e6064 JW |
477 | usb_free_urb(sz->urb_in); |
478 | free_buf_in: | |
479 | usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in); | |
480 | free_sz: | |
481 | kfree(sz); | |
19770693 | 482 | |
8e9e6064 | 483 | return retval; |
19770693 JW |
484 | } |
485 | ||
486 | /** | |
487 | * streamzap_disconnect | |
488 | * | |
489 | * Called by the usb core when the device is removed from the system. | |
490 | * | |
491 | * This routine guarantees that the driver will not submit any more urbs | |
8e9e6064 | 492 | * by clearing dev->usbdev. It is also supposed to terminate any currently |
19770693 JW |
493 | * active urbs. Unfortunately, usb_bulk_msg(), used in streamzap_read(), |
494 | * does not provide any way to do this. | |
495 | */ | |
496 | static void streamzap_disconnect(struct usb_interface *interface) | |
497 | { | |
8e9e6064 JW |
498 | struct streamzap_ir *sz = usb_get_intfdata(interface); |
499 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
19770693 | 500 | |
8e9e6064 | 501 | usb_set_intfdata(interface, NULL); |
19770693 | 502 | |
8e9e6064 JW |
503 | if (!sz) |
504 | return; | |
19770693 | 505 | |
8e9e6064 JW |
506 | sz->usbdev = NULL; |
507 | ir_input_unregister(sz->idev); | |
508 | usb_kill_urb(sz->urb_in); | |
19770693 | 509 | usb_free_urb(sz->urb_in); |
8e9e6064 | 510 | usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in); |
19770693 | 511 | |
19770693 | 512 | kfree(sz); |
19770693 JW |
513 | } |
514 | ||
515 | static int streamzap_suspend(struct usb_interface *intf, pm_message_t message) | |
516 | { | |
8e9e6064 | 517 | struct streamzap_ir *sz = usb_get_intfdata(intf); |
19770693 | 518 | |
8e9e6064 | 519 | usb_kill_urb(sz->urb_in); |
19770693 | 520 | |
19770693 JW |
521 | return 0; |
522 | } | |
523 | ||
524 | static int streamzap_resume(struct usb_interface *intf) | |
525 | { | |
8e9e6064 | 526 | struct streamzap_ir *sz = usb_get_intfdata(intf); |
19770693 | 527 | |
8e9e6064 JW |
528 | if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) { |
529 | dev_err(sz->dev, "Error sumbiting urb\n"); | |
530 | return -EIO; | |
19770693 | 531 | } |
8e9e6064 | 532 | |
19770693 JW |
533 | return 0; |
534 | } | |
535 | ||
536 | /** | |
8e9e6064 | 537 | * streamzap_init |
19770693 | 538 | */ |
8e9e6064 | 539 | static int __init streamzap_init(void) |
19770693 | 540 | { |
8e9e6064 | 541 | int ret; |
19770693 JW |
542 | |
543 | /* register this driver with the USB subsystem */ | |
8e9e6064 JW |
544 | ret = usb_register(&streamzap_driver); |
545 | if (ret < 0) | |
546 | printk(KERN_ERR DRIVER_NAME ": usb register failed, " | |
547 | "result = %d\n", ret); | |
19770693 | 548 | |
8e9e6064 | 549 | return ret; |
19770693 JW |
550 | } |
551 | ||
552 | /** | |
8e9e6064 | 553 | * streamzap_exit |
19770693 | 554 | */ |
8e9e6064 | 555 | static void __exit streamzap_exit(void) |
19770693 JW |
556 | { |
557 | usb_deregister(&streamzap_driver); | |
558 | } | |
559 | ||
560 | ||
8e9e6064 JW |
561 | module_init(streamzap_init); |
562 | module_exit(streamzap_exit); | |
19770693 | 563 | |
8e9e6064 | 564 | MODULE_AUTHOR("Jarod Wilson <jarod@wilsonet.com>"); |
19770693 JW |
565 | MODULE_DESCRIPTION(DRIVER_DESC); |
566 | MODULE_LICENSE("GPL"); | |
567 | ||
568 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
569 | MODULE_PARM_DESC(debug, "Enable debugging messages"); |