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Commit | Line | Data |
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99f83c9c MD |
1 | /* |
2 | * keyspan_remote: USB driver for the Keyspan DMR | |
3 | * | |
4 | * Copyright (C) 2005 Zymeta Corporation - Michael Downey (downey@zymeta.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License as | |
8 | * published by the Free Software Foundation, version 2. | |
9 | * | |
10 | * This driver has been put together with the support of Innosys, Inc. | |
11 | * and Keyspan, Inc the manufacturers of the Keyspan USB DMR product. | |
12 | */ | |
13 | ||
99f83c9c MD |
14 | #include <linux/kernel.h> |
15 | #include <linux/errno.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/moduleparam.h> | |
ae0dadcf | 20 | #include <linux/usb/input.h> |
99f83c9c MD |
21 | |
22 | #define DRIVER_VERSION "v0.1" | |
23 | #define DRIVER_AUTHOR "Michael Downey <downey@zymeta.com>" | |
24 | #define DRIVER_DESC "Driver for the USB Keyspan remote control." | |
25 | #define DRIVER_LICENSE "GPL" | |
26 | ||
27 | /* Parameters that can be passed to the driver. */ | |
28 | static int debug; | |
29 | module_param(debug, int, 0444); | |
30 | MODULE_PARM_DESC(debug, "Enable extra debug messages and information"); | |
31 | ||
32 | /* Vendor and product ids */ | |
33 | #define USB_KEYSPAN_VENDOR_ID 0x06CD | |
34 | #define USB_KEYSPAN_PRODUCT_UIA11 0x0202 | |
35 | ||
36 | /* Defines for converting the data from the remote. */ | |
37 | #define ZERO 0x18 | |
38 | #define ZERO_MASK 0x1F /* 5 bits for a 0 */ | |
39 | #define ONE 0x3C | |
40 | #define ONE_MASK 0x3F /* 6 bits for a 1 */ | |
41 | #define SYNC 0x3F80 | |
42 | #define SYNC_MASK 0x3FFF /* 14 bits for a SYNC sequence */ | |
43 | #define STOP 0x00 | |
44 | #define STOP_MASK 0x1F /* 5 bits for the STOP sequence */ | |
45 | #define GAP 0xFF | |
46 | ||
47 | #define RECV_SIZE 8 /* The UIA-11 type have a 8 byte limit. */ | |
48 | ||
49 | /* table of devices that work with this driver */ | |
50 | static struct usb_device_id keyspan_table[] = { | |
51 | { USB_DEVICE(USB_KEYSPAN_VENDOR_ID, USB_KEYSPAN_PRODUCT_UIA11) }, | |
52 | { } /* Terminating entry */ | |
53 | }; | |
54 | ||
55 | /* Structure to store all the real stuff that a remote sends to us. */ | |
56 | struct keyspan_message { | |
57 | u16 system; | |
58 | u8 button; | |
59 | u8 toggle; | |
60 | }; | |
61 | ||
62 | /* Structure used for all the bit testing magic needed to be done. */ | |
63 | struct bit_tester { | |
64 | u32 tester; | |
65 | int len; | |
66 | int pos; | |
67 | int bits_left; | |
68 | u8 buffer[32]; | |
69 | }; | |
70 | ||
71 | /* Structure to hold all of our driver specific stuff */ | |
72 | struct usb_keyspan { | |
73 | char name[128]; | |
74 | char phys[64]; | |
75 | struct usb_device* udev; | |
c5b7c7c3 | 76 | struct input_dev *input; |
99f83c9c MD |
77 | struct usb_interface* interface; |
78 | struct usb_endpoint_descriptor* in_endpoint; | |
79 | struct urb* irq_urb; | |
80 | int open; | |
81 | dma_addr_t in_dma; | |
82 | unsigned char* in_buffer; | |
83 | ||
84 | /* variables used to parse messages from remote. */ | |
85 | struct bit_tester data; | |
86 | int stage; | |
87 | int toggle; | |
88 | }; | |
89 | ||
90 | /* | |
91 | * Table that maps the 31 possible keycodes to input keys. | |
92 | * Currently there are 15 and 17 button models so RESERVED codes | |
93 | * are blank areas in the mapping. | |
94 | */ | |
4c4c9432 | 95 | static const int keyspan_key_table[] = { |
99f83c9c MD |
96 | KEY_RESERVED, /* 0 is just a place holder. */ |
97 | KEY_RESERVED, | |
98 | KEY_STOP, | |
99 | KEY_PLAYCD, | |
100 | KEY_RESERVED, | |
101 | KEY_PREVIOUSSONG, | |
102 | KEY_REWIND, | |
103 | KEY_FORWARD, | |
104 | KEY_NEXTSONG, | |
105 | KEY_RESERVED, | |
106 | KEY_RESERVED, | |
107 | KEY_RESERVED, | |
108 | KEY_PAUSE, | |
109 | KEY_VOLUMEUP, | |
110 | KEY_RESERVED, | |
111 | KEY_RESERVED, | |
112 | KEY_RESERVED, | |
113 | KEY_VOLUMEDOWN, | |
114 | KEY_RESERVED, | |
115 | KEY_UP, | |
116 | KEY_RESERVED, | |
117 | KEY_MUTE, | |
118 | KEY_LEFT, | |
119 | KEY_ENTER, | |
120 | KEY_RIGHT, | |
121 | KEY_RESERVED, | |
122 | KEY_RESERVED, | |
123 | KEY_DOWN, | |
124 | KEY_RESERVED, | |
125 | KEY_KPASTERISK, | |
126 | KEY_RESERVED, | |
127 | KEY_MENU | |
128 | }; | |
129 | ||
130 | static struct usb_driver keyspan_driver; | |
131 | ||
132 | /* | |
133 | * Debug routine that prints out what we've received from the remote. | |
134 | */ | |
135 | static void keyspan_print(struct usb_keyspan* dev) /*unsigned char* data)*/ | |
136 | { | |
c5b7c7c3 | 137 | char codes[4 * RECV_SIZE]; |
99f83c9c MD |
138 | int i; |
139 | ||
c5b7c7c3 DT |
140 | for (i = 0; i < RECV_SIZE; i++) |
141 | snprintf(codes + i * 3, 4, "%02x ", dev->in_buffer[i]); | |
99f83c9c MD |
142 | |
143 | dev_info(&dev->udev->dev, "%s\n", codes); | |
144 | } | |
145 | ||
146 | /* | |
147 | * Routine that manages the bit_tester structure. It makes sure that there are | |
148 | * at least bits_needed bits loaded into the tester. | |
149 | */ | |
150 | static int keyspan_load_tester(struct usb_keyspan* dev, int bits_needed) | |
151 | { | |
152 | if (dev->data.bits_left >= bits_needed) | |
c5b7c7c3 | 153 | return 0; |
99f83c9c MD |
154 | |
155 | /* | |
156 | * Somehow we've missed the last message. The message will be repeated | |
157 | * though so it's not too big a deal | |
158 | */ | |
159 | if (dev->data.pos >= dev->data.len) { | |
654f3118 GKH |
160 | dev_dbg(&dev->udev->dev, |
161 | "%s - Error ran out of data. pos: %d, len: %d\n", | |
99f83c9c | 162 | __FUNCTION__, dev->data.pos, dev->data.len); |
c5b7c7c3 | 163 | return -1; |
99f83c9c MD |
164 | } |
165 | ||
166 | /* Load as much as we can into the tester. */ | |
167 | while ((dev->data.bits_left + 7 < (sizeof(dev->data.tester) * 8)) && | |
168 | (dev->data.pos < dev->data.len)) { | |
169 | dev->data.tester += (dev->data.buffer[dev->data.pos++] << dev->data.bits_left); | |
170 | dev->data.bits_left += 8; | |
171 | } | |
172 | ||
c5b7c7c3 | 173 | return 0; |
99f83c9c MD |
174 | } |
175 | ||
176 | /* | |
177 | * Routine that handles all the logic needed to parse out the message from the remote. | |
178 | */ | |
7d12e780 | 179 | static void keyspan_check_data(struct usb_keyspan *remote) |
99f83c9c MD |
180 | { |
181 | int i; | |
182 | int found = 0; | |
183 | struct keyspan_message message; | |
184 | ||
185 | switch(remote->stage) { | |
186 | case 0: | |
187 | /* | |
188 | * In stage 0 we want to find the start of a message. The remote sends a 0xFF as filler. | |
189 | * So the first byte that isn't a FF should be the start of a new message. | |
190 | */ | |
191 | for (i = 0; i < RECV_SIZE && remote->in_buffer[i] == GAP; ++i); | |
192 | ||
193 | if (i < RECV_SIZE) { | |
194 | memcpy(remote->data.buffer, remote->in_buffer, RECV_SIZE); | |
195 | remote->data.len = RECV_SIZE; | |
196 | remote->data.pos = 0; | |
197 | remote->data.tester = 0; | |
198 | remote->data.bits_left = 0; | |
199 | remote->stage = 1; | |
200 | } | |
201 | break; | |
202 | ||
203 | case 1: | |
204 | /* | |
205 | * Stage 1 we should have 16 bytes and should be able to detect a | |
206 | * SYNC. The SYNC is 14 bits, 7 0's and then 7 1's. | |
207 | */ | |
208 | memcpy(remote->data.buffer + remote->data.len, remote->in_buffer, RECV_SIZE); | |
209 | remote->data.len += RECV_SIZE; | |
210 | ||
211 | found = 0; | |
212 | while ((remote->data.bits_left >= 14 || remote->data.pos < remote->data.len) && !found) { | |
213 | for (i = 0; i < 8; ++i) { | |
214 | if (keyspan_load_tester(remote, 14) != 0) { | |
215 | remote->stage = 0; | |
216 | return; | |
217 | } | |
218 | ||
219 | if ((remote->data.tester & SYNC_MASK) == SYNC) { | |
220 | remote->data.tester = remote->data.tester >> 14; | |
221 | remote->data.bits_left -= 14; | |
222 | found = 1; | |
223 | break; | |
224 | } else { | |
225 | remote->data.tester = remote->data.tester >> 1; | |
226 | --remote->data.bits_left; | |
227 | } | |
228 | } | |
229 | } | |
230 | ||
231 | if (!found) { | |
232 | remote->stage = 0; | |
233 | remote->data.len = 0; | |
234 | } else { | |
235 | remote->stage = 2; | |
236 | } | |
237 | break; | |
238 | ||
239 | case 2: | |
240 | /* | |
241 | * Stage 2 we should have 24 bytes which will be enough for a full | |
242 | * message. We need to parse out the system code, button code, | |
243 | * toggle code, and stop. | |
244 | */ | |
245 | memcpy(remote->data.buffer + remote->data.len, remote->in_buffer, RECV_SIZE); | |
246 | remote->data.len += RECV_SIZE; | |
247 | ||
248 | message.system = 0; | |
249 | for (i = 0; i < 9; i++) { | |
250 | keyspan_load_tester(remote, 6); | |
251 | ||
252 | if ((remote->data.tester & ZERO_MASK) == ZERO) { | |
253 | message.system = message.system << 1; | |
254 | remote->data.tester = remote->data.tester >> 5; | |
255 | remote->data.bits_left -= 5; | |
256 | } else if ((remote->data.tester & ONE_MASK) == ONE) { | |
257 | message.system = (message.system << 1) + 1; | |
258 | remote->data.tester = remote->data.tester >> 6; | |
259 | remote->data.bits_left -= 6; | |
260 | } else { | |
261 | err("%s - Unknown sequence found in system data.\n", __FUNCTION__); | |
262 | remote->stage = 0; | |
263 | return; | |
264 | } | |
265 | } | |
266 | ||
267 | message.button = 0; | |
268 | for (i = 0; i < 5; i++) { | |
269 | keyspan_load_tester(remote, 6); | |
270 | ||
271 | if ((remote->data.tester & ZERO_MASK) == ZERO) { | |
272 | message.button = message.button << 1; | |
273 | remote->data.tester = remote->data.tester >> 5; | |
274 | remote->data.bits_left -= 5; | |
275 | } else if ((remote->data.tester & ONE_MASK) == ONE) { | |
276 | message.button = (message.button << 1) + 1; | |
277 | remote->data.tester = remote->data.tester >> 6; | |
278 | remote->data.bits_left -= 6; | |
279 | } else { | |
280 | err("%s - Unknown sequence found in button data.\n", __FUNCTION__); | |
281 | remote->stage = 0; | |
282 | return; | |
283 | } | |
284 | } | |
285 | ||
286 | keyspan_load_tester(remote, 6); | |
287 | if ((remote->data.tester & ZERO_MASK) == ZERO) { | |
288 | message.toggle = 0; | |
289 | remote->data.tester = remote->data.tester >> 5; | |
290 | remote->data.bits_left -= 5; | |
291 | } else if ((remote->data.tester & ONE_MASK) == ONE) { | |
292 | message.toggle = 1; | |
293 | remote->data.tester = remote->data.tester >> 6; | |
294 | remote->data.bits_left -= 6; | |
295 | } else { | |
296 | err("%s - Error in message, invalid toggle.\n", __FUNCTION__); | |
01e89506 MD |
297 | remote->stage = 0; |
298 | return; | |
99f83c9c MD |
299 | } |
300 | ||
301 | keyspan_load_tester(remote, 5); | |
302 | if ((remote->data.tester & STOP_MASK) == STOP) { | |
303 | remote->data.tester = remote->data.tester >> 5; | |
304 | remote->data.bits_left -= 5; | |
305 | } else { | |
306 | err("Bad message recieved, no stop bit found.\n"); | |
307 | } | |
308 | ||
654f3118 | 309 | dev_dbg(&remote->udev->dev, |
99f83c9c MD |
310 | "%s found valid message: system: %d, button: %d, toggle: %d\n", |
311 | __FUNCTION__, message.system, message.button, message.toggle); | |
312 | ||
313 | if (message.toggle != remote->toggle) { | |
c5b7c7c3 DT |
314 | input_report_key(remote->input, keyspan_key_table[message.button], 1); |
315 | input_report_key(remote->input, keyspan_key_table[message.button], 0); | |
316 | input_sync(remote->input); | |
99f83c9c MD |
317 | remote->toggle = message.toggle; |
318 | } | |
319 | ||
320 | remote->stage = 0; | |
321 | break; | |
322 | } | |
323 | } | |
324 | ||
325 | /* | |
326 | * Routine for sending all the initialization messages to the remote. | |
327 | */ | |
328 | static int keyspan_setup(struct usb_device* dev) | |
329 | { | |
330 | int retval = 0; | |
331 | ||
332 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
333 | 0x11, 0x40, 0x5601, 0x0, NULL, 0, 0); | |
334 | if (retval) { | |
335 | dev_dbg(&dev->dev, "%s - failed to set bit rate due to error: %d\n", | |
336 | __FUNCTION__, retval); | |
337 | return(retval); | |
338 | } | |
339 | ||
340 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
341 | 0x44, 0x40, 0x0, 0x0, NULL, 0, 0); | |
342 | if (retval) { | |
343 | dev_dbg(&dev->dev, "%s - failed to set resume sensitivity due to error: %d\n", | |
344 | __FUNCTION__, retval); | |
345 | return(retval); | |
346 | } | |
347 | ||
348 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
349 | 0x22, 0x40, 0x0, 0x0, NULL, 0, 0); | |
350 | if (retval) { | |
351 | dev_dbg(&dev->dev, "%s - failed to turn receive on due to error: %d\n", | |
352 | __FUNCTION__, retval); | |
353 | return(retval); | |
354 | } | |
355 | ||
356 | dev_dbg(&dev->dev, "%s - Setup complete.\n", __FUNCTION__); | |
357 | return(retval); | |
358 | } | |
359 | ||
360 | /* | |
361 | * Routine used to handle a new message that has come in. | |
362 | */ | |
7d12e780 | 363 | static void keyspan_irq_recv(struct urb *urb) |
99f83c9c MD |
364 | { |
365 | struct usb_keyspan *dev = urb->context; | |
366 | int retval; | |
367 | ||
368 | /* Check our status in case we need to bail out early. */ | |
369 | switch (urb->status) { | |
370 | case 0: | |
371 | break; | |
372 | ||
373 | /* Device went away so don't keep trying to read from it. */ | |
374 | case -ECONNRESET: | |
375 | case -ENOENT: | |
376 | case -ESHUTDOWN: | |
377 | return; | |
378 | ||
379 | default: | |
380 | goto resubmit; | |
381 | break; | |
382 | } | |
383 | ||
384 | if (debug) | |
385 | keyspan_print(dev); | |
386 | ||
7d12e780 | 387 | keyspan_check_data(dev); |
99f83c9c MD |
388 | |
389 | resubmit: | |
390 | retval = usb_submit_urb(urb, GFP_ATOMIC); | |
391 | if (retval) | |
392 | err ("%s - usb_submit_urb failed with result: %d", __FUNCTION__, retval); | |
393 | } | |
394 | ||
395 | static int keyspan_open(struct input_dev *dev) | |
396 | { | |
397 | struct usb_keyspan *remote = dev->private; | |
398 | ||
99f83c9c | 399 | remote->irq_urb->dev = remote->udev; |
c5b7c7c3 | 400 | if (usb_submit_urb(remote->irq_urb, GFP_KERNEL)) |
99f83c9c | 401 | return -EIO; |
99f83c9c MD |
402 | |
403 | return 0; | |
404 | } | |
405 | ||
406 | static void keyspan_close(struct input_dev *dev) | |
407 | { | |
408 | struct usb_keyspan *remote = dev->private; | |
409 | ||
c5b7c7c3 DT |
410 | usb_kill_urb(remote->irq_urb); |
411 | } | |
412 | ||
413 | static struct usb_endpoint_descriptor *keyspan_get_in_endpoint(struct usb_host_interface *iface) | |
414 | { | |
415 | ||
416 | struct usb_endpoint_descriptor *endpoint; | |
417 | int i; | |
418 | ||
419 | for (i = 0; i < iface->desc.bNumEndpoints; ++i) { | |
420 | endpoint = &iface->endpoint[i].desc; | |
421 | ||
96723199 | 422 | if (usb_endpoint_is_int_in(endpoint)) { |
c5b7c7c3 DT |
423 | /* we found our interrupt in endpoint */ |
424 | return endpoint; | |
425 | } | |
426 | } | |
427 | ||
428 | return NULL; | |
99f83c9c MD |
429 | } |
430 | ||
431 | /* | |
432 | * Routine that sets up the driver to handle a specific USB device detected on the bus. | |
433 | */ | |
434 | static int keyspan_probe(struct usb_interface *interface, const struct usb_device_id *id) | |
435 | { | |
c5b7c7c3 | 436 | struct usb_device *udev = interface_to_usbdev(interface); |
99f83c9c | 437 | struct usb_endpoint_descriptor *endpoint; |
c5b7c7c3 DT |
438 | struct usb_keyspan *remote; |
439 | struct input_dev *input_dev; | |
440 | int i, retval; | |
99f83c9c | 441 | |
c5b7c7c3 DT |
442 | endpoint = keyspan_get_in_endpoint(interface->cur_altsetting); |
443 | if (!endpoint) | |
444 | return -ENODEV; | |
445 | ||
446 | remote = kzalloc(sizeof(*remote), GFP_KERNEL); | |
447 | input_dev = input_allocate_device(); | |
448 | if (!remote || !input_dev) { | |
449 | retval = -ENOMEM; | |
450 | goto fail1; | |
99f83c9c | 451 | } |
99f83c9c MD |
452 | |
453 | remote->udev = udev; | |
c5b7c7c3 | 454 | remote->input = input_dev; |
99f83c9c | 455 | remote->interface = interface; |
c5b7c7c3 | 456 | remote->in_endpoint = endpoint; |
99f83c9c MD |
457 | remote->toggle = -1; /* Set to -1 so we will always not match the toggle from the first remote message. */ |
458 | ||
c5b7c7c3 DT |
459 | remote->in_buffer = usb_buffer_alloc(udev, RECV_SIZE, SLAB_ATOMIC, &remote->in_dma); |
460 | if (!remote->in_buffer) { | |
461 | retval = -ENOMEM; | |
462 | goto fail1; | |
99f83c9c MD |
463 | } |
464 | ||
465 | remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL); | |
466 | if (!remote->irq_urb) { | |
99f83c9c | 467 | retval = -ENOMEM; |
c5b7c7c3 | 468 | goto fail2; |
99f83c9c MD |
469 | } |
470 | ||
c5b7c7c3 | 471 | retval = keyspan_setup(udev); |
99f83c9c | 472 | if (retval) { |
99f83c9c | 473 | retval = -ENODEV; |
c5b7c7c3 | 474 | goto fail3; |
99f83c9c MD |
475 | } |
476 | ||
c5b7c7c3 DT |
477 | if (udev->manufacturer) |
478 | strlcpy(remote->name, udev->manufacturer, sizeof(remote->name)); | |
99f83c9c | 479 | |
c5b7c7c3 DT |
480 | if (udev->product) { |
481 | if (udev->manufacturer) | |
482 | strlcat(remote->name, " ", sizeof(remote->name)); | |
483 | strlcat(remote->name, udev->product, sizeof(remote->name)); | |
99f83c9c MD |
484 | } |
485 | ||
c5b7c7c3 DT |
486 | if (!strlen(remote->name)) |
487 | snprintf(remote->name, sizeof(remote->name), | |
488 | "USB Keyspan Remote %04x:%04x", | |
489 | le16_to_cpu(udev->descriptor.idVendor), | |
490 | le16_to_cpu(udev->descriptor.idProduct)); | |
99f83c9c | 491 | |
c5b7c7c3 DT |
492 | usb_make_path(udev, remote->phys, sizeof(remote->phys)); |
493 | strlcat(remote->phys, "/input0", sizeof(remote->phys)); | |
99f83c9c | 494 | |
c5b7c7c3 DT |
495 | input_dev->name = remote->name; |
496 | input_dev->phys = remote->phys; | |
497 | usb_to_input_id(udev, &input_dev->id); | |
498 | input_dev->cdev.dev = &interface->dev; | |
99f83c9c | 499 | |
c5b7c7c3 DT |
500 | input_dev->evbit[0] = BIT(EV_KEY); /* We will only report KEY events. */ |
501 | for (i = 0; i < ARRAY_SIZE(keyspan_key_table); i++) | |
502 | if (keyspan_key_table[i] != KEY_RESERVED) | |
503 | set_bit(keyspan_key_table[i], input_dev->keybit); | |
504 | ||
505 | input_dev->private = remote; | |
506 | input_dev->open = keyspan_open; | |
507 | input_dev->close = keyspan_close; | |
99f83c9c MD |
508 | |
509 | /* | |
510 | * Initialize the URB to access the device. The urb gets sent to the device in keyspan_open() | |
511 | */ | |
512 | usb_fill_int_urb(remote->irq_urb, | |
513 | remote->udev, usb_rcvintpipe(remote->udev, remote->in_endpoint->bEndpointAddress), | |
514 | remote->in_buffer, RECV_SIZE, keyspan_irq_recv, remote, | |
515 | remote->in_endpoint->bInterval); | |
516 | remote->irq_urb->transfer_dma = remote->in_dma; | |
517 | remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
518 | ||
519 | /* we can register the device now, as it is ready */ | |
c5b7c7c3 | 520 | input_register_device(remote->input); |
99f83c9c MD |
521 | |
522 | /* save our data pointer in this interface device */ | |
523 | usb_set_intfdata(interface, remote); | |
524 | ||
99f83c9c MD |
525 | return 0; |
526 | ||
c5b7c7c3 DT |
527 | fail3: usb_free_urb(remote->irq_urb); |
528 | fail2: usb_buffer_free(udev, RECV_SIZE, remote->in_buffer, remote->in_dma); | |
529 | fail1: kfree(remote); | |
530 | input_free_device(input_dev); | |
99f83c9c MD |
531 | |
532 | return retval; | |
533 | } | |
534 | ||
535 | /* | |
536 | * Routine called when a device is disconnected from the USB. | |
537 | */ | |
538 | static void keyspan_disconnect(struct usb_interface *interface) | |
539 | { | |
540 | struct usb_keyspan *remote; | |
541 | ||
99f83c9c MD |
542 | remote = usb_get_intfdata(interface); |
543 | usb_set_intfdata(interface, NULL); | |
544 | ||
545 | if (remote) { /* We have a valid driver structure so clean up everything we allocated. */ | |
c5b7c7c3 | 546 | input_unregister_device(remote->input); |
99f83c9c MD |
547 | usb_kill_urb(remote->irq_urb); |
548 | usb_free_urb(remote->irq_urb); | |
c5b7c7c3 | 549 | usb_buffer_free(remote->udev, RECV_SIZE, remote->in_buffer, remote->in_dma); |
99f83c9c MD |
550 | kfree(remote); |
551 | } | |
99f83c9c MD |
552 | } |
553 | ||
554 | /* | |
555 | * Standard driver set up sections | |
556 | */ | |
557 | static struct usb_driver keyspan_driver = | |
558 | { | |
99f83c9c MD |
559 | .name = "keyspan_remote", |
560 | .probe = keyspan_probe, | |
561 | .disconnect = keyspan_disconnect, | |
562 | .id_table = keyspan_table | |
563 | }; | |
564 | ||
565 | static int __init usb_keyspan_init(void) | |
566 | { | |
567 | int result; | |
568 | ||
569 | /* register this driver with the USB subsystem */ | |
570 | result = usb_register(&keyspan_driver); | |
571 | if (result) | |
572 | err("usb_register failed. Error number %d\n", result); | |
573 | ||
574 | return result; | |
575 | } | |
576 | ||
577 | static void __exit usb_keyspan_exit(void) | |
578 | { | |
579 | /* deregister this driver with the USB subsystem */ | |
580 | usb_deregister(&keyspan_driver); | |
581 | } | |
582 | ||
583 | module_init(usb_keyspan_init); | |
584 | module_exit(usb_keyspan_exit); | |
585 | ||
586 | MODULE_DEVICE_TABLE(usb, keyspan_table); | |
587 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
588 | MODULE_DESCRIPTION(DRIVER_DESC); | |
589 | MODULE_LICENSE(DRIVER_LICENSE); |