Merge branch 'for-2.6.30' into for-2.6.31
[linux-2.6] / drivers / media / dvb / b2c2 / flexcop-usb.c
1 /*
2  * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
3  * flexcop-usb.c - covers the USB part
4  * see flexcop.c for copyright information
5  */
6 #define FC_LOG_PREFIX "flexcop_usb"
7 #include "flexcop-usb.h"
8 #include "flexcop-common.h"
9
10 /* Version information */
11 #define DRIVER_VERSION "0.1"
12 #define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV USB Driver"
13 #define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>"
14
15 /* debug */
16 #ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
17 #define dprintk(level,args...) \
18         do { if ((debug & level)) printk(args); } while (0)
19
20 #define debug_dump(b, l, method) do {\
21         int i; \
22         for (i = 0; i < l; i++) \
23                 method("%02x ", b[i]); \
24         method("\n"); \
25 } while (0)
26
27 #define DEBSTATUS ""
28 #else
29 #define dprintk(level, args...)
30 #define debug_dump(b, l, method)
31 #define DEBSTATUS " (debugging is not enabled)"
32 #endif
33
34 static int debug;
35 module_param(debug, int, 0644);
36 MODULE_PARM_DESC(debug, "set debugging level (1=info,ts=2,"
37                 "ctrl=4,i2c=8,v8mem=16 (or-able))." DEBSTATUS);
38 #undef DEBSTATUS
39
40 #define deb_info(args...) dprintk(0x01, args)
41 #define deb_ts(args...) dprintk(0x02, args)
42 #define deb_ctrl(args...) dprintk(0x04, args)
43 #define deb_i2c(args...) dprintk(0x08, args)
44 #define deb_v8(args...) dprintk(0x10, args)
45
46 /* JLP 111700: we will include the 1 bit gap between the upper and lower 3 bits
47  * in the IBI address, to make the V8 code simpler.
48  * PCI ADDRESS FORMAT: 0x71C -> 0000 0111 0001 1100 (the six bits used)
49  *                  in general: 0000 0HHH 000L LL00
50  * IBI ADDRESS FORMAT:                    RHHH BLLL
51  *
52  * where R is the read(1)/write(0) bit, B is the busy bit
53  * and HHH and LLL are the two sets of three bits from the PCI address.
54  */
55 #define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) \
56         (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
57 #define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) \
58         (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
59
60 /*
61  * DKT 020228
62  * - forget about this VENDOR_BUFFER_SIZE, read and write register
63  *   deal with DWORD or 4 bytes, that should be should from now on
64  * - from now on, we don't support anything older than firm 1.00
65  *   I eliminated the write register as a 2 trip of writing hi word and lo word
66  *   and force this to write only 4 bytes at a time.
67  *   NOTE: this should work with all the firmware from 1.00 and newer
68  */
69 static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, u32 *val, u8 read)
70 {
71         struct flexcop_usb *fc_usb = fc->bus_specific;
72         u8 request = read ? B2C2_USB_READ_REG : B2C2_USB_WRITE_REG;
73         u8 request_type = (read ? USB_DIR_IN : USB_DIR_OUT) | USB_TYPE_VENDOR;
74         u8 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) |
75                 (read ? 0x80 : 0);
76
77         int len = usb_control_msg(fc_usb->udev,
78                         read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT,
79                         request,
80                         request_type, /* 0xc0 read or 0x40 write */
81                         wAddress,
82                         0,
83                         val,
84                         sizeof(u32),
85                         B2C2_WAIT_FOR_OPERATION_RDW * HZ);
86
87         if (len != sizeof(u32)) {
88                 err("error while %s dword from %d (%d).", read ? "reading" :
89                                 "writing", wAddress, wRegOffsPCI);
90                 return -EIO;
91         }
92         return 0;
93 }
94 /*
95  * DKT 010817 - add support for V8 memory read/write and flash update
96  */
97 static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb,
98                 flexcop_usb_request_t req, u8 page, u16 wAddress,
99                 u8 *pbBuffer, u32 buflen)
100 {
101         u8 request_type = USB_TYPE_VENDOR;
102         u16 wIndex;
103         int nWaitTime, pipe, len;
104         wIndex = page << 8;
105
106         switch (req) {
107         case B2C2_USB_READ_V8_MEM:
108                 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ;
109                 request_type |= USB_DIR_IN;
110                 pipe = B2C2_USB_CTRL_PIPE_IN;
111                 break;
112         case B2C2_USB_WRITE_V8_MEM:
113                 wIndex |= pbBuffer[0];
114                 request_type |= USB_DIR_OUT;
115                 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
116                 pipe = B2C2_USB_CTRL_PIPE_OUT;
117                 break;
118         case B2C2_USB_FLASH_BLOCK:
119                 request_type |= USB_DIR_OUT;
120                 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
121                 pipe = B2C2_USB_CTRL_PIPE_OUT;
122                 break;
123         default:
124                 deb_info("unsupported request for v8_mem_req %x.\n", req);
125                 return -EINVAL;
126         }
127         deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n", request_type, req,
128                         wAddress, wIndex, buflen);
129
130         len = usb_control_msg(fc_usb->udev, pipe,
131                         req,
132                         request_type,
133                         wAddress,
134                         wIndex,
135                         pbBuffer,
136                         buflen,
137                         nWaitTime * HZ);
138
139         debug_dump(pbBuffer, len, deb_v8);
140         return len == buflen ? 0 : -EIO;
141 }
142
143 #define bytes_left_to_read_on_page(paddr,buflen) \
144         ((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \
145          ? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)))
146
147 static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb,
148                 flexcop_usb_request_t req, flexcop_usb_mem_page_t page_start,
149                 u32 addr, int extended, u8 *buf, u32 len)
150 {
151         int i,ret = 0;
152         u16 wMax;
153         u32 pagechunk = 0;
154
155         switch(req) {
156         case B2C2_USB_READ_V8_MEM:
157                 wMax = USB_MEM_READ_MAX;
158                 break;
159         case B2C2_USB_WRITE_V8_MEM:
160                 wMax = USB_MEM_WRITE_MAX;
161                 break;
162         case B2C2_USB_FLASH_BLOCK:
163                 wMax = USB_FLASH_MAX;
164                 break;
165         default:
166                 return -EINVAL;
167                 break;
168         }
169         for (i = 0; i < len;) {
170                 pagechunk =
171                         wMax < bytes_left_to_read_on_page(addr, len) ?
172                                 wMax :
173                                 bytes_left_to_read_on_page(addr, len);
174                 deb_info("%x\n",
175                         (addr & V8_MEMORY_PAGE_MASK) |
176                                 (V8_MEMORY_EXTENDED*extended));
177
178                 ret = flexcop_usb_v8_memory_req(fc_usb, req,
179                         page_start + (addr / V8_MEMORY_PAGE_SIZE),
180                         (addr & V8_MEMORY_PAGE_MASK) |
181                                 (V8_MEMORY_EXTENDED*extended),
182                         &buf[i], pagechunk);
183
184                 if (ret < 0)
185                         return ret;
186                 addr += pagechunk;
187                 len -= pagechunk;
188         }
189         return 0;
190 }
191
192 static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended)
193 {
194         return flexcop_usb_memory_req(fc->bus_specific, B2C2_USB_READ_V8_MEM,
195                 V8_MEMORY_PAGE_FLASH, 0x1f010, 1,
196                 fc->dvb_adapter.proposed_mac, 6);
197 }
198
199 #if 0
200 static int flexcop_usb_utility_req(struct flexcop_usb *fc_usb, int set,
201                 flexcop_usb_utility_function_t func, u8 extra, u16 wIndex,
202                 u16 buflen, u8 *pvBuffer)
203 {
204         u16 wValue;
205         u8 request_type = (set ? USB_DIR_OUT : USB_DIR_IN) | USB_TYPE_VENDOR;
206         int nWaitTime = 2,
207             pipe = set ? B2C2_USB_CTRL_PIPE_OUT : B2C2_USB_CTRL_PIPE_IN, len;
208         wValue = (func << 8) | extra;
209
210         len = usb_control_msg(fc_usb->udev,pipe,
211                         B2C2_USB_UTILITY,
212                         request_type,
213                         wValue,
214                         wIndex,
215                         pvBuffer,
216                         buflen,
217                         nWaitTime * HZ);
218         return len == buflen ? 0 : -EIO;
219 }
220 #endif
221
222 /* usb i2c stuff */
223 static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
224                 flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
225                 u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
226 {
227         struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
228         u16 wValue, wIndex;
229         int nWaitTime,pipe,len;
230         u8 request_type = USB_TYPE_VENDOR;
231
232         switch (func) {
233         case USB_FUNC_I2C_WRITE:
234         case USB_FUNC_I2C_MULTIWRITE:
235         case USB_FUNC_I2C_REPEATWRITE:
236                 /* DKT 020208 - add this to support special case of DiSEqC */
237         case USB_FUNC_I2C_CHECKWRITE:
238                 pipe = B2C2_USB_CTRL_PIPE_OUT;
239                 nWaitTime = 2;
240                 request_type |= USB_DIR_OUT;
241                 break;
242         case USB_FUNC_I2C_READ:
243         case USB_FUNC_I2C_REPEATREAD:
244                 pipe = B2C2_USB_CTRL_PIPE_IN;
245                 nWaitTime = 2;
246                 request_type |= USB_DIR_IN;
247                 break;
248         default:
249                 deb_info("unsupported function for i2c_req %x\n", func);
250                 return -EINVAL;
251         }
252         wValue = (func << 8) | (i2c->port << 4);
253         wIndex = (chipaddr << 8 ) | addr;
254
255         deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",
256                         func, request_type, req,
257                         wValue & 0xff, wValue >> 8,
258                         wIndex & 0xff, wIndex >> 8);
259
260         len = usb_control_msg(fc_usb->udev,pipe,
261                         req,
262                         request_type,
263                         wValue,
264                         wIndex,
265                         buf,
266                         buflen,
267                         nWaitTime * HZ);
268         return len == buflen ? 0 : -EREMOTEIO;
269 }
270
271 /* actual bus specific access functions,
272    make sure prototype are/will be equal to pci */
273 static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc,
274         flexcop_ibi_register reg)
275 {
276         flexcop_ibi_value val;
277         val.raw = 0;
278         flexcop_usb_readwrite_dw(fc, reg, &val.raw, 1);
279         return val;
280 }
281
282 static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc,
283                 flexcop_ibi_register reg, flexcop_ibi_value val)
284 {
285         return flexcop_usb_readwrite_dw(fc, reg, &val.raw, 0);
286 }
287
288 static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
289                 flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
290 {
291         if (op == FC_READ)
292                 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
293                                 USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
294         else
295                 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
296                                 USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
297 }
298
299 static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb,
300         u8 *buffer, int buffer_length)
301 {
302         u8 *b;
303         int l;
304
305         deb_ts("tmp_buffer_length=%d, buffer_length=%d\n",
306                 fc_usb->tmp_buffer_length, buffer_length);
307
308         if (fc_usb->tmp_buffer_length > 0) {
309                 memcpy(fc_usb->tmp_buffer+fc_usb->tmp_buffer_length, buffer,
310                                 buffer_length);
311                 fc_usb->tmp_buffer_length += buffer_length;
312                 b = fc_usb->tmp_buffer;
313                 l = fc_usb->tmp_buffer_length;
314         } else {
315                 b=buffer;
316                 l=buffer_length;
317         }
318
319         while (l >= 190) {
320                 if (*b == 0xff) {
321                         switch (*(b+1) & 0x03) {
322                         case 0x01: /* media packet */
323                                 if (*(b+2) == 0x47)
324                                         flexcop_pass_dmx_packets(
325                                                         fc_usb->fc_dev, b+2, 1);
326                                 else
327                                         deb_ts(
328                                         "not ts packet %02x %02x %02x %02x \n",
329                                                 *(b+2), *(b+3),
330                                                 *(b+4), *(b+5));
331                                 b += 190;
332                                 l -= 190;
333                                 break;
334                         default:
335                                 deb_ts("wrong packet type\n");
336                                 l = 0;
337                                 break;
338                         }
339                 } else {
340                         deb_ts("wrong header\n");
341                         l = 0;
342                 }
343         }
344
345         if (l>0)
346                 memcpy(fc_usb->tmp_buffer, b, l);
347         fc_usb->tmp_buffer_length = l;
348 }
349
350 static void flexcop_usb_urb_complete(struct urb *urb)
351 {
352         struct flexcop_usb *fc_usb = urb->context;
353         int i;
354
355         if (urb->actual_length > 0)
356                 deb_ts("urb completed, bufsize: %d actlen; %d\n",
357                         urb->transfer_buffer_length, urb->actual_length);
358
359         for (i = 0; i < urb->number_of_packets; i++) {
360                 if (urb->iso_frame_desc[i].status < 0) {
361                         err("iso frame descriptor %d has an error: %d\n", i,
362                                 urb->iso_frame_desc[i].status);
363                 } else
364                         if (urb->iso_frame_desc[i].actual_length > 0) {
365                                 deb_ts("passed %d bytes to the demux\n",
366                                         urb->iso_frame_desc[i].actual_length);
367
368                                 flexcop_usb_process_frame(fc_usb,
369                                         urb->transfer_buffer +
370                                                 urb->iso_frame_desc[i].offset,
371                                         urb->iso_frame_desc[i].actual_length);
372                         }
373                 urb->iso_frame_desc[i].status = 0;
374                 urb->iso_frame_desc[i].actual_length = 0;
375         }
376         usb_submit_urb(urb,GFP_ATOMIC);
377 }
378
379 static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff)
380 {
381         /* submit/kill iso packets */
382         return 0;
383 }
384
385 static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb)
386 {
387         int i;
388         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
389                 if (fc_usb->iso_urb[i] != NULL) {
390                         deb_ts("unlinking/killing urb no. %d\n",i);
391                         usb_kill_urb(fc_usb->iso_urb[i]);
392                         usb_free_urb(fc_usb->iso_urb[i]);
393                 }
394
395         if (fc_usb->iso_buffer != NULL)
396                 pci_free_consistent(NULL,
397                         fc_usb->buffer_size, fc_usb->iso_buffer,
398                         fc_usb->dma_addr);
399 }
400
401 static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb)
402 {
403         u16 frame_size = le16_to_cpu(
404                 fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
405         int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO *
406                 frame_size, i, j, ret;
407         int buffer_offset = 0;
408
409         deb_ts("creating %d iso-urbs with %d frames "
410                         "each of %d bytes size = %d.\n", B2C2_USB_NUM_ISO_URB,
411                         B2C2_USB_FRAMES_PER_ISO, frame_size, bufsize);
412
413         fc_usb->iso_buffer = pci_alloc_consistent(NULL,
414                         bufsize, &fc_usb->dma_addr);
415         if (fc_usb->iso_buffer == NULL)
416                 return -ENOMEM;
417
418         memset(fc_usb->iso_buffer, 0, bufsize);
419         fc_usb->buffer_size = bufsize;
420
421         /* creating iso urbs */
422         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
423                 fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,
424                         GFP_ATOMIC);
425                 if (fc_usb->iso_urb[i] == NULL) {
426                         ret = -ENOMEM;
427                         goto urb_error;
428                 }
429         }
430
431         /* initialising and submitting iso urbs */
432         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
433                 int frame_offset = 0;
434                 struct urb *urb = fc_usb->iso_urb[i];
435                 deb_ts("initializing and submitting urb no. %d "
436                         "(buf_offset: %d).\n", i, buffer_offset);
437
438                 urb->dev = fc_usb->udev;
439                 urb->context = fc_usb;
440                 urb->complete = flexcop_usb_urb_complete;
441                 urb->pipe = B2C2_USB_DATA_PIPE;
442                 urb->transfer_flags = URB_ISO_ASAP;
443                 urb->interval = 1;
444                 urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
445                 urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
446                 urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset;
447
448                 buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
449                 for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
450                         deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",
451                                         i, j, frame_offset);
452                         urb->iso_frame_desc[j].offset = frame_offset;
453                         urb->iso_frame_desc[j].length = frame_size;
454                         frame_offset += frame_size;
455                 }
456
457                 if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) {
458                         err("submitting urb %d failed with %d.", i, ret);
459                         goto urb_error;
460                 }
461                 deb_ts("submitted urb no. %d.\n",i);
462         }
463
464         /* SRAM */
465         flexcop_sram_set_dest(fc_usb->fc_dev, FC_SRAM_DEST_MEDIA |
466                         FC_SRAM_DEST_NET | FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI,
467                         FC_SRAM_DEST_TARGET_WAN_USB);
468         flexcop_wan_set_speed(fc_usb->fc_dev, FC_WAN_SPEED_8MBITS);
469         flexcop_sram_ctrl(fc_usb->fc_dev, 1, 1, 1);
470         return 0;
471
472 urb_error:
473         flexcop_usb_transfer_exit(fc_usb);
474         return ret;
475 }
476
477 static int flexcop_usb_init(struct flexcop_usb *fc_usb)
478 {
479         /* use the alternate setting with the larges buffer */
480         usb_set_interface(fc_usb->udev,0,1);
481         switch (fc_usb->udev->speed) {
482         case USB_SPEED_LOW:
483                 err("cannot handle USB speed because it is too slow.");
484                 return -ENODEV;
485                 break;
486         case USB_SPEED_FULL:
487                 info("running at FULL speed.");
488                 break;
489         case USB_SPEED_HIGH:
490                 info("running at HIGH speed.");
491                 break;
492         case USB_SPEED_UNKNOWN: /* fall through */
493         default:
494                 err("cannot handle USB speed because it is unknown.");
495                 return -ENODEV;
496         }
497         usb_set_intfdata(fc_usb->uintf, fc_usb);
498         return 0;
499 }
500
501 static void flexcop_usb_exit(struct flexcop_usb *fc_usb)
502 {
503         usb_set_intfdata(fc_usb->uintf, NULL);
504 }
505
506 static int flexcop_usb_probe(struct usb_interface *intf,
507                 const struct usb_device_id *id)
508 {
509         struct usb_device *udev = interface_to_usbdev(intf);
510         struct flexcop_usb *fc_usb = NULL;
511         struct flexcop_device *fc = NULL;
512         int ret;
513
514         if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
515                 err("out of memory\n");
516                 return -ENOMEM;
517         }
518
519         /* general flexcop init */
520         fc_usb = fc->bus_specific;
521         fc_usb->fc_dev = fc;
522
523         fc->read_ibi_reg  = flexcop_usb_read_ibi_reg;
524         fc->write_ibi_reg = flexcop_usb_write_ibi_reg;
525         fc->i2c_request = flexcop_usb_i2c_request;
526         fc->get_mac_addr = flexcop_usb_get_mac_addr;
527
528         fc->stream_control = flexcop_usb_stream_control;
529
530         fc->pid_filtering = 1;
531         fc->bus_type = FC_USB;
532
533         fc->dev = &udev->dev;
534         fc->owner = THIS_MODULE;
535
536         /* bus specific part */
537         fc_usb->udev = udev;
538         fc_usb->uintf = intf;
539         if ((ret = flexcop_usb_init(fc_usb)) != 0)
540                 goto err_kfree;
541
542         /* init flexcop */
543         if ((ret = flexcop_device_initialize(fc)) != 0)
544                 goto err_usb_exit;
545
546         /* xfer init */
547         if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0)
548                 goto err_fc_exit;
549
550         info("%s successfully initialized and connected.", DRIVER_NAME);
551         return 0;
552
553 err_fc_exit:
554         flexcop_device_exit(fc);
555 err_usb_exit:
556         flexcop_usb_exit(fc_usb);
557 err_kfree:
558         flexcop_device_kfree(fc);
559         return ret;
560 }
561
562 static void flexcop_usb_disconnect(struct usb_interface *intf)
563 {
564         struct flexcop_usb *fc_usb = usb_get_intfdata(intf);
565         flexcop_usb_transfer_exit(fc_usb);
566         flexcop_device_exit(fc_usb->fc_dev);
567         flexcop_usb_exit(fc_usb);
568         flexcop_device_kfree(fc_usb->fc_dev);
569         info("%s successfully deinitialized and disconnected.", DRIVER_NAME);
570 }
571
572 static struct usb_device_id flexcop_usb_table [] = {
573         { USB_DEVICE(0x0af7, 0x0101) },
574         { }
575 };
576 MODULE_DEVICE_TABLE (usb, flexcop_usb_table);
577
578 /* usb specific object needed to register this driver with the usb subsystem */
579 static struct usb_driver flexcop_usb_driver = {
580         .name           = "b2c2_flexcop_usb",
581         .probe          = flexcop_usb_probe,
582         .disconnect = flexcop_usb_disconnect,
583         .id_table       = flexcop_usb_table,
584 };
585
586 /* module stuff */
587 static int __init flexcop_usb_module_init(void)
588 {
589         int result;
590         if ((result = usb_register(&flexcop_usb_driver))) {
591                 err("usb_register failed. (%d)", result);
592                 return result;
593         }
594         return 0;
595 }
596
597 static void __exit flexcop_usb_module_exit(void)
598 {
599         /* deregister this driver from the USB subsystem */
600         usb_deregister(&flexcop_usb_driver);
601 }
602
603 module_init(flexcop_usb_module_init);
604 module_exit(flexcop_usb_module_exit);
605
606 MODULE_AUTHOR(DRIVER_AUTHOR);
607 MODULE_DESCRIPTION(DRIVER_NAME);
608 MODULE_LICENSE("GPL");