Commit | Line | Data |
---|---|---|
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> |
8e9e6064 | 37 | #include <linux/input.h> |
635f76b2 PB |
38 | #include <linux/usb.h> |
39 | #include <linux/usb/input.h> | |
8e9e6064 | 40 | #include <media/ir-core.h> |
19770693 | 41 | |
7a569f52 | 42 | #define DRIVER_VERSION "1.61" |
8e9e6064 | 43 | #define DRIVER_NAME "streamzap" |
19770693 JW |
44 | #define DRIVER_DESC "Streamzap Remote Control driver" |
45 | ||
8e9e6064 JW |
46 | #ifdef CONFIG_USB_DEBUG |
47 | static int debug = 1; | |
48 | #else | |
19770693 | 49 | static int debug; |
8e9e6064 | 50 | #endif |
19770693 JW |
51 | |
52 | #define USB_STREAMZAP_VENDOR_ID 0x0e9c | |
53 | #define USB_STREAMZAP_PRODUCT_ID 0x0000 | |
54 | ||
19770693 JW |
55 | /* table of devices that work with this driver */ |
56 | static struct usb_device_id streamzap_table[] = { | |
57 | /* Streamzap Remote Control */ | |
58 | { USB_DEVICE(USB_STREAMZAP_VENDOR_ID, USB_STREAMZAP_PRODUCT_ID) }, | |
59 | /* Terminating entry */ | |
60 | { } | |
61 | }; | |
62 | ||
63 | MODULE_DEVICE_TABLE(usb, streamzap_table); | |
64 | ||
b768d47e JW |
65 | #define SZ_PULSE_MASK 0xf0 |
66 | #define SZ_SPACE_MASK 0x0f | |
67 | #define SZ_TIMEOUT 0xff | |
68 | #define SZ_RESOLUTION 256 | |
19770693 JW |
69 | |
70 | /* number of samples buffered */ | |
8e9e6064 | 71 | #define SZ_BUF_LEN 128 |
19770693 | 72 | |
7a569f52 JW |
73 | /* from ir-rc5-sz-decoder.c */ |
74 | #ifdef CONFIG_IR_RC5_SZ_DECODER_MODULE | |
75 | #define load_rc5_sz_decode() request_module("ir-rc5-sz-decoder") | |
76 | #else | |
77 | #define load_rc5_sz_decode() 0 | |
78 | #endif | |
79 | ||
19770693 JW |
80 | enum StreamzapDecoderState { |
81 | PulseSpace, | |
82 | FullPulse, | |
83 | FullSpace, | |
84 | IgnorePulse | |
85 | }; | |
86 | ||
8e9e6064 JW |
87 | /* structure to hold our device specific stuff */ |
88 | struct streamzap_ir { | |
89 | ||
90 | /* ir-core */ | |
91 | struct ir_dev_props *props; | |
8e9e6064 JW |
92 | |
93 | /* core device info */ | |
94 | struct device *dev; | |
95 | struct input_dev *idev; | |
19770693 JW |
96 | |
97 | /* usb */ | |
8e9e6064 | 98 | struct usb_device *usbdev; |
19770693 | 99 | struct usb_interface *interface; |
8e9e6064 JW |
100 | struct usb_endpoint_descriptor *endpoint; |
101 | struct urb *urb_in; | |
19770693 JW |
102 | |
103 | /* buffer & dma */ | |
104 | unsigned char *buf_in; | |
105 | dma_addr_t dma_in; | |
106 | unsigned int buf_in_len; | |
107 | ||
8e9e6064 JW |
108 | /* track what state we're in */ |
109 | enum StreamzapDecoderState decoder_state; | |
19770693 | 110 | /* tracks whether we are currently receiving some signal */ |
8e9e6064 | 111 | bool idle; |
19770693 JW |
112 | /* sum of signal lengths received since signal start */ |
113 | unsigned long sum; | |
114 | /* start time of signal; necessary for gap tracking */ | |
115 | struct timeval signal_last; | |
116 | struct timeval signal_start; | |
7a569f52 | 117 | bool timeout_enabled; |
8e9e6064 JW |
118 | |
119 | char name[128]; | |
120 | char phys[64]; | |
19770693 JW |
121 | }; |
122 | ||
123 | ||
124 | /* local function prototypes */ | |
125 | static int streamzap_probe(struct usb_interface *interface, | |
126 | const struct usb_device_id *id); | |
127 | static void streamzap_disconnect(struct usb_interface *interface); | |
8e9e6064 | 128 | static void streamzap_callback(struct urb *urb); |
19770693 JW |
129 | static int streamzap_suspend(struct usb_interface *intf, pm_message_t message); |
130 | static int streamzap_resume(struct usb_interface *intf); | |
131 | ||
132 | /* usb specific object needed to register this driver with the usb subsystem */ | |
19770693 JW |
133 | static struct usb_driver streamzap_driver = { |
134 | .name = DRIVER_NAME, | |
135 | .probe = streamzap_probe, | |
136 | .disconnect = streamzap_disconnect, | |
137 | .suspend = streamzap_suspend, | |
138 | .resume = streamzap_resume, | |
139 | .id_table = streamzap_table, | |
140 | }; | |
141 | ||
7a569f52 | 142 | static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir) |
19770693 | 143 | { |
1338c925 JW |
144 | dev_dbg(sz->dev, "Storing %s with duration %u us\n", |
145 | (rawir.pulse ? "pulse" : "space"), rawir.duration); | |
146 | ir_raw_event_store_with_filter(sz->idev, &rawir); | |
19770693 JW |
147 | } |
148 | ||
8e9e6064 JW |
149 | static void sz_push_full_pulse(struct streamzap_ir *sz, |
150 | unsigned char value) | |
19770693 | 151 | { |
4651918a | 152 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 | 153 | |
19770693 JW |
154 | if (sz->idle) { |
155 | long deltv; | |
19770693 JW |
156 | |
157 | sz->signal_last = sz->signal_start; | |
158 | do_gettimeofday(&sz->signal_start); | |
159 | ||
8e9e6064 | 160 | deltv = sz->signal_start.tv_sec - sz->signal_last.tv_sec; |
7a569f52 | 161 | rawir.pulse = false; |
19770693 JW |
162 | if (deltv > 15) { |
163 | /* really long time */ | |
7a569f52 | 164 | rawir.duration = IR_MAX_DURATION; |
19770693 | 165 | } else { |
7a569f52 | 166 | rawir.duration = (int)(deltv * 1000000 + |
8e9e6064 JW |
167 | sz->signal_start.tv_usec - |
168 | sz->signal_last.tv_usec); | |
7a569f52 JW |
169 | rawir.duration -= sz->sum; |
170 | rawir.duration *= 1000; | |
171 | rawir.duration &= IR_MAX_DURATION; | |
19770693 | 172 | } |
7a569f52 | 173 | sz_push(sz, rawir); |
19770693 | 174 | |
7a569f52 | 175 | sz->idle = false; |
19770693 JW |
176 | sz->sum = 0; |
177 | } | |
178 | ||
7a569f52 | 179 | rawir.pulse = true; |
b768d47e JW |
180 | rawir.duration = ((int) value) * SZ_RESOLUTION; |
181 | rawir.duration += SZ_RESOLUTION / 2; | |
7a569f52 JW |
182 | sz->sum += rawir.duration; |
183 | rawir.duration *= 1000; | |
184 | rawir.duration &= IR_MAX_DURATION; | |
7a569f52 | 185 | sz_push(sz, rawir); |
19770693 JW |
186 | } |
187 | ||
8e9e6064 JW |
188 | static void sz_push_half_pulse(struct streamzap_ir *sz, |
189 | unsigned char value) | |
19770693 | 190 | { |
b768d47e | 191 | sz_push_full_pulse(sz, (value & SZ_PULSE_MASK) >> 4); |
19770693 JW |
192 | } |
193 | ||
8e9e6064 JW |
194 | static void sz_push_full_space(struct streamzap_ir *sz, |
195 | unsigned char value) | |
19770693 | 196 | { |
4651918a | 197 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 JW |
198 | |
199 | rawir.pulse = false; | |
b768d47e JW |
200 | rawir.duration = ((int) value) * SZ_RESOLUTION; |
201 | rawir.duration += SZ_RESOLUTION / 2; | |
7a569f52 JW |
202 | sz->sum += rawir.duration; |
203 | rawir.duration *= 1000; | |
7a569f52 | 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 | { |
b768d47e | 210 | sz_push_full_space(sz, value & SZ_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; | |
19770693 JW |
224 | |
225 | if (!urb) | |
226 | return; | |
227 | ||
228 | sz = urb->context; | |
229 | len = urb->actual_length; | |
230 | ||
231 | switch (urb->status) { | |
232 | case -ECONNRESET: | |
233 | case -ENOENT: | |
234 | case -ESHUTDOWN: | |
235 | /* | |
236 | * this urb is terminated, clean up. | |
237 | * sz might already be invalid at this point | |
238 | */ | |
8e9e6064 | 239 | dev_err(sz->dev, "urb terminated, status: %d\n", urb->status); |
19770693 JW |
240 | return; |
241 | default: | |
242 | break; | |
243 | } | |
244 | ||
8e9e6064 | 245 | dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len); |
7a569f52 | 246 | for (i = 0; i < len; i++) { |
1338c925 | 247 | dev_dbg(sz->dev, "sz->buf_in[%d]: %x\n", |
7a569f52 JW |
248 | i, (unsigned char)sz->buf_in[i]); |
249 | switch (sz->decoder_state) { | |
250 | case PulseSpace: | |
b768d47e JW |
251 | if ((sz->buf_in[i] & SZ_PULSE_MASK) == |
252 | SZ_PULSE_MASK) { | |
7a569f52 JW |
253 | sz->decoder_state = FullPulse; |
254 | continue; | |
b768d47e JW |
255 | } else if ((sz->buf_in[i] & SZ_SPACE_MASK) |
256 | == SZ_SPACE_MASK) { | |
7a569f52 JW |
257 | sz_push_half_pulse(sz, sz->buf_in[i]); |
258 | sz->decoder_state = FullSpace; | |
259 | continue; | |
260 | } else { | |
261 | sz_push_half_pulse(sz, sz->buf_in[i]); | |
8e9e6064 | 262 | sz_push_half_space(sz, sz->buf_in[i]); |
19770693 | 263 | } |
7a569f52 JW |
264 | break; |
265 | case FullPulse: | |
266 | sz_push_full_pulse(sz, sz->buf_in[i]); | |
267 | sz->decoder_state = IgnorePulse; | |
268 | break; | |
269 | case FullSpace: | |
b768d47e | 270 | if (sz->buf_in[i] == SZ_TIMEOUT) { |
4651918a | 271 | DEFINE_IR_RAW_EVENT(rawir); |
7a569f52 JW |
272 | |
273 | rawir.pulse = false; | |
1338c925 | 274 | rawir.duration = sz->props->timeout; |
7a569f52 JW |
275 | sz->idle = true; |
276 | if (sz->timeout_enabled) | |
277 | sz_push(sz, rawir); | |
278 | ir_raw_event_handle(sz->idev); | |
279 | } else { | |
280 | sz_push_full_space(sz, sz->buf_in[i]); | |
281 | } | |
282 | sz->decoder_state = PulseSpace; | |
283 | break; | |
284 | case IgnorePulse: | |
b768d47e JW |
285 | if ((sz->buf_in[i] & SZ_SPACE_MASK) == |
286 | SZ_SPACE_MASK) { | |
7a569f52 JW |
287 | sz->decoder_state = FullSpace; |
288 | continue; | |
289 | } | |
290 | sz_push_half_space(sz, sz->buf_in[i]); | |
291 | sz->decoder_state = PulseSpace; | |
292 | break; | |
19770693 JW |
293 | } |
294 | } | |
295 | ||
296 | usb_submit_urb(urb, GFP_ATOMIC); | |
297 | ||
298 | return; | |
299 | } | |
300 | ||
8e9e6064 JW |
301 | static struct input_dev *streamzap_init_input_dev(struct streamzap_ir *sz) |
302 | { | |
303 | struct input_dev *idev; | |
304 | struct ir_dev_props *props; | |
305 | struct device *dev = sz->dev; | |
306 | int ret; | |
307 | ||
308 | idev = input_allocate_device(); | |
309 | if (!idev) { | |
310 | dev_err(dev, "remote input dev allocation failed\n"); | |
311 | goto idev_alloc_failed; | |
312 | } | |
313 | ||
314 | props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL); | |
315 | if (!props) { | |
316 | dev_err(dev, "remote ir dev props allocation failed\n"); | |
317 | goto props_alloc_failed; | |
318 | } | |
319 | ||
320 | snprintf(sz->name, sizeof(sz->name), "Streamzap PC Remote Infrared " | |
321 | "Receiver (%04x:%04x)", | |
322 | le16_to_cpu(sz->usbdev->descriptor.idVendor), | |
323 | le16_to_cpu(sz->usbdev->descriptor.idProduct)); | |
324 | ||
325 | idev->name = sz->name; | |
326 | usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys)); | |
327 | strlcat(sz->phys, "/input0", sizeof(sz->phys)); | |
328 | idev->phys = sz->phys; | |
329 | ||
330 | props->priv = sz; | |
331 | props->driver_type = RC_DRIVER_IR_RAW; | |
7a569f52 | 332 | props->allowed_protos = IR_TYPE_ALL; |
8e9e6064 JW |
333 | |
334 | sz->props = props; | |
335 | ||
635f76b2 PB |
336 | usb_to_input_id(sz->usbdev, &idev->id); |
337 | idev->dev.parent = sz->dev; | |
338 | ||
7a569f52 | 339 | ret = ir_input_register(idev, RC_MAP_STREAMZAP, props, DRIVER_NAME); |
8e9e6064 JW |
340 | if (ret < 0) { |
341 | dev_err(dev, "remote input device register failed\n"); | |
342 | goto irdev_failed; | |
343 | } | |
344 | ||
345 | return idev; | |
346 | ||
347 | irdev_failed: | |
348 | kfree(props); | |
349 | props_alloc_failed: | |
350 | input_free_device(idev); | |
351 | idev_alloc_failed: | |
352 | return NULL; | |
353 | } | |
354 | ||
19770693 JW |
355 | /** |
356 | * streamzap_probe | |
357 | * | |
358 | * Called by usb-core to associated with a candidate device | |
359 | * On any failure the return value is the ERROR | |
360 | * On success return 0 | |
361 | */ | |
8e9e6064 JW |
362 | static int __devinit streamzap_probe(struct usb_interface *intf, |
363 | const struct usb_device_id *id) | |
19770693 | 364 | { |
8e9e6064 | 365 | struct usb_device *usbdev = interface_to_usbdev(intf); |
19770693 | 366 | struct usb_host_interface *iface_host; |
8e9e6064 | 367 | struct streamzap_ir *sz = NULL; |
19770693 JW |
368 | char buf[63], name[128] = ""; |
369 | int retval = -ENOMEM; | |
8e9e6064 | 370 | int pipe, maxp; |
19770693 JW |
371 | |
372 | /* Allocate space for device driver specific data */ | |
8e9e6064 JW |
373 | sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL); |
374 | if (!sz) | |
19770693 JW |
375 | return -ENOMEM; |
376 | ||
8e9e6064 JW |
377 | sz->usbdev = usbdev; |
378 | sz->interface = intf; | |
19770693 JW |
379 | |
380 | /* Check to ensure endpoint information matches requirements */ | |
8e9e6064 | 381 | iface_host = intf->cur_altsetting; |
19770693 JW |
382 | |
383 | if (iface_host->desc.bNumEndpoints != 1) { | |
8e9e6064 JW |
384 | dev_err(&intf->dev, "%s: Unexpected desc.bNumEndpoints (%d)\n", |
385 | __func__, iface_host->desc.bNumEndpoints); | |
19770693 JW |
386 | retval = -ENODEV; |
387 | goto free_sz; | |
388 | } | |
389 | ||
390 | sz->endpoint = &(iface_host->endpoint[0].desc); | |
391 | if ((sz->endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) | |
392 | != USB_DIR_IN) { | |
8e9e6064 JW |
393 | dev_err(&intf->dev, "%s: endpoint doesn't match input device " |
394 | "02%02x\n", __func__, sz->endpoint->bEndpointAddress); | |
19770693 JW |
395 | retval = -ENODEV; |
396 | goto free_sz; | |
397 | } | |
398 | ||
399 | if ((sz->endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) | |
400 | != USB_ENDPOINT_XFER_INT) { | |
8e9e6064 JW |
401 | dev_err(&intf->dev, "%s: endpoint attributes don't match xfer " |
402 | "02%02x\n", __func__, sz->endpoint->bmAttributes); | |
19770693 JW |
403 | retval = -ENODEV; |
404 | goto free_sz; | |
405 | } | |
406 | ||
8e9e6064 JW |
407 | pipe = usb_rcvintpipe(usbdev, sz->endpoint->bEndpointAddress); |
408 | maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe)); | |
409 | ||
410 | if (maxp == 0) { | |
411 | dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n", | |
412 | __func__); | |
19770693 JW |
413 | retval = -ENODEV; |
414 | goto free_sz; | |
415 | } | |
416 | ||
417 | /* Allocate the USB buffer and IRQ URB */ | |
8e9e6064 JW |
418 | sz->buf_in = usb_alloc_coherent(usbdev, maxp, GFP_ATOMIC, &sz->dma_in); |
419 | if (!sz->buf_in) | |
19770693 JW |
420 | goto free_sz; |
421 | ||
422 | sz->urb_in = usb_alloc_urb(0, GFP_KERNEL); | |
8e9e6064 JW |
423 | if (!sz->urb_in) |
424 | goto free_buf_in; | |
19770693 | 425 | |
8e9e6064 JW |
426 | sz->dev = &intf->dev; |
427 | sz->buf_in_len = maxp; | |
19770693 | 428 | |
8e9e6064 JW |
429 | if (usbdev->descriptor.iManufacturer |
430 | && usb_string(usbdev, usbdev->descriptor.iManufacturer, | |
19770693 JW |
431 | buf, sizeof(buf)) > 0) |
432 | strlcpy(name, buf, sizeof(name)); | |
433 | ||
8e9e6064 JW |
434 | if (usbdev->descriptor.iProduct |
435 | && usb_string(usbdev, usbdev->descriptor.iProduct, | |
19770693 JW |
436 | buf, sizeof(buf)) > 0) |
437 | snprintf(name + strlen(name), sizeof(name) - strlen(name), | |
438 | " %s", buf); | |
439 | ||
8e9e6064 JW |
440 | sz->idev = streamzap_init_input_dev(sz); |
441 | if (!sz->idev) | |
442 | goto input_dev_fail; | |
19770693 | 443 | |
8e9e6064 JW |
444 | sz->idle = true; |
445 | sz->decoder_state = PulseSpace; | |
7a569f52 JW |
446 | /* FIXME: don't yet have a way to set this */ |
447 | sz->timeout_enabled = true; | |
1338c925 JW |
448 | sz->props->timeout = (((SZ_TIMEOUT * SZ_RESOLUTION * 1000) & |
449 | IR_MAX_DURATION) | 0x03000000); | |
8e9e6064 JW |
450 | #if 0 |
451 | /* not yet supported, depends on patches from maxim */ | |
452 | /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */ | |
b768d47e JW |
453 | sz->min_timeout = SZ_TIMEOUT * SZ_RESOLUTION * 1000; |
454 | sz->max_timeout = SZ_TIMEOUT * SZ_RESOLUTION * 1000; | |
8e9e6064 | 455 | #endif |
19770693 | 456 | |
8e9e6064 | 457 | do_gettimeofday(&sz->signal_start); |
19770693 | 458 | |
8e9e6064 JW |
459 | /* Complete final initialisations */ |
460 | usb_fill_int_urb(sz->urb_in, usbdev, pipe, sz->buf_in, | |
461 | maxp, (usb_complete_t)streamzap_callback, | |
462 | sz, sz->endpoint->bInterval); | |
463 | sz->urb_in->transfer_dma = sz->dma_in; | |
464 | sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
19770693 | 465 | |
8e9e6064 | 466 | usb_set_intfdata(intf, sz); |
19770693 | 467 | |
7a569f52 JW |
468 | if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) |
469 | dev_err(sz->dev, "urb submit failed\n"); | |
19770693 | 470 | |
8e9e6064 JW |
471 | dev_info(sz->dev, "Registered %s on usb%d:%d\n", name, |
472 | usbdev->bus->busnum, usbdev->devnum); | |
19770693 | 473 | |
7a569f52 JW |
474 | /* Load the streamzap not-quite-rc5 decoder too */ |
475 | load_rc5_sz_decode(); | |
476 | ||
8e9e6064 | 477 | return 0; |
19770693 | 478 | |
8e9e6064 | 479 | input_dev_fail: |
8e9e6064 JW |
480 | usb_free_urb(sz->urb_in); |
481 | free_buf_in: | |
482 | usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in); | |
483 | free_sz: | |
484 | kfree(sz); | |
19770693 | 485 | |
8e9e6064 | 486 | return retval; |
19770693 JW |
487 | } |
488 | ||
489 | /** | |
490 | * streamzap_disconnect | |
491 | * | |
492 | * Called by the usb core when the device is removed from the system. | |
493 | * | |
494 | * This routine guarantees that the driver will not submit any more urbs | |
8e9e6064 | 495 | * by clearing dev->usbdev. It is also supposed to terminate any currently |
19770693 JW |
496 | * active urbs. Unfortunately, usb_bulk_msg(), used in streamzap_read(), |
497 | * does not provide any way to do this. | |
498 | */ | |
499 | static void streamzap_disconnect(struct usb_interface *interface) | |
500 | { | |
8e9e6064 JW |
501 | struct streamzap_ir *sz = usb_get_intfdata(interface); |
502 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
19770693 | 503 | |
8e9e6064 | 504 | usb_set_intfdata(interface, NULL); |
19770693 | 505 | |
8e9e6064 JW |
506 | if (!sz) |
507 | return; | |
19770693 | 508 | |
8e9e6064 JW |
509 | sz->usbdev = NULL; |
510 | ir_input_unregister(sz->idev); | |
511 | usb_kill_urb(sz->urb_in); | |
19770693 | 512 | usb_free_urb(sz->urb_in); |
8e9e6064 | 513 | usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in); |
19770693 | 514 | |
19770693 | 515 | kfree(sz); |
19770693 JW |
516 | } |
517 | ||
518 | static int streamzap_suspend(struct usb_interface *intf, pm_message_t message) | |
519 | { | |
8e9e6064 | 520 | struct streamzap_ir *sz = usb_get_intfdata(intf); |
19770693 | 521 | |
8e9e6064 | 522 | usb_kill_urb(sz->urb_in); |
19770693 | 523 | |
19770693 JW |
524 | return 0; |
525 | } | |
526 | ||
527 | static int streamzap_resume(struct usb_interface *intf) | |
528 | { | |
8e9e6064 | 529 | struct streamzap_ir *sz = usb_get_intfdata(intf); |
19770693 | 530 | |
8e9e6064 JW |
531 | if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) { |
532 | dev_err(sz->dev, "Error sumbiting urb\n"); | |
533 | return -EIO; | |
19770693 | 534 | } |
8e9e6064 | 535 | |
19770693 JW |
536 | return 0; |
537 | } | |
538 | ||
539 | /** | |
8e9e6064 | 540 | * streamzap_init |
19770693 | 541 | */ |
8e9e6064 | 542 | static int __init streamzap_init(void) |
19770693 | 543 | { |
8e9e6064 | 544 | int ret; |
19770693 JW |
545 | |
546 | /* register this driver with the USB subsystem */ | |
8e9e6064 JW |
547 | ret = usb_register(&streamzap_driver); |
548 | if (ret < 0) | |
549 | printk(KERN_ERR DRIVER_NAME ": usb register failed, " | |
550 | "result = %d\n", ret); | |
19770693 | 551 | |
8e9e6064 | 552 | return ret; |
19770693 JW |
553 | } |
554 | ||
555 | /** | |
8e9e6064 | 556 | * streamzap_exit |
19770693 | 557 | */ |
8e9e6064 | 558 | static void __exit streamzap_exit(void) |
19770693 JW |
559 | { |
560 | usb_deregister(&streamzap_driver); | |
561 | } | |
562 | ||
563 | ||
8e9e6064 JW |
564 | module_init(streamzap_init); |
565 | module_exit(streamzap_exit); | |
19770693 | 566 | |
8e9e6064 | 567 | MODULE_AUTHOR("Jarod Wilson <jarod@wilsonet.com>"); |
19770693 JW |
568 | MODULE_DESCRIPTION(DRIVER_DESC); |
569 | MODULE_LICENSE("GPL"); | |
570 | ||
571 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
572 | MODULE_PARM_DESC(debug, "Enable debugging messages"); |