xref: /linux/drivers/media/usb/b2c2/flexcop-usb.c (revision 0add53713b1c07a1c71e27a20e21eb7c180b4e7b)
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@posteo.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,ctrl=4,i2c=8,v8mem=16 (or-able))." DEBSTATUS);
37 #undef DEBSTATUS
38 
39 #define deb_info(args...) dprintk(0x01, args)
40 #define deb_ts(args...) dprintk(0x02, args)
41 #define deb_ctrl(args...) dprintk(0x04, args)
42 #define deb_i2c(args...) dprintk(0x08, args)
43 #define deb_v8(args...) dprintk(0x10, args)
44 
45 /* JLP 111700: we will include the 1 bit gap between the upper and lower 3 bits
46  * in the IBI address, to make the V8 code simpler.
47  * PCI ADDRESS FORMAT: 0x71C -> 0000 0111 0001 1100 (the six bits used)
48  *                  in general: 0000 0HHH 000L LL00
49  * IBI ADDRESS FORMAT:                    RHHH BLLL
50  *
51  * where R is the read(1)/write(0) bit, B is the busy bit
52  * and HHH and LLL are the two sets of three bits from the PCI address.
53  */
54 #define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) \
55 	(((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
56 #define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) \
57 	(((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
58 
59 /*
60  * DKT 020228
61  * - forget about this VENDOR_BUFFER_SIZE, read and write register
62  *   deal with DWORD or 4 bytes, that should be should from now on
63  * - from now on, we don't support anything older than firm 1.00
64  *   I eliminated the write register as a 2 trip of writing hi word and lo word
65  *   and force this to write only 4 bytes at a time.
66  *   NOTE: this should work with all the firmware from 1.00 and newer
67  */
68 static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, u32 *val, u8 read)
69 {
70 	struct flexcop_usb *fc_usb = fc->bus_specific;
71 	u8 request = read ? B2C2_USB_READ_REG : B2C2_USB_WRITE_REG;
72 	u8 request_type = (read ? USB_DIR_IN : USB_DIR_OUT) | USB_TYPE_VENDOR;
73 	u8 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) |
74 		(read ? 0x80 : 0);
75 	int ret;
76 
77 	mutex_lock(&fc_usb->data_mutex);
78 	if (!read)
79 		memcpy(fc_usb->data, val, sizeof(*val));
80 
81 	ret = usb_control_msg(fc_usb->udev,
82 			read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT,
83 			request,
84 			request_type, /* 0xc0 read or 0x40 write */
85 			wAddress,
86 			0,
87 			fc_usb->data,
88 			sizeof(u32),
89 			B2C2_WAIT_FOR_OPERATION_RDW * HZ);
90 
91 	if (ret != sizeof(u32)) {
92 		err("error while %s dword from %d (%d).", read ? "reading" :
93 				"writing", wAddress, wRegOffsPCI);
94 		if (ret >= 0)
95 			ret = -EIO;
96 	}
97 
98 	if (read && ret >= 0)
99 		memcpy(val, fc_usb->data, sizeof(*val));
100 	mutex_unlock(&fc_usb->data_mutex);
101 
102 	return ret;
103 }
104 /*
105  * DKT 010817 - add support for V8 memory read/write and flash update
106  */
107 static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb,
108 		flexcop_usb_request_t req, u8 page, u16 wAddress,
109 		u8 *pbBuffer, u32 buflen)
110 {
111 	u8 request_type = USB_TYPE_VENDOR;
112 	u16 wIndex;
113 	int nWaitTime, pipe, ret;
114 	wIndex = page << 8;
115 
116 	if (buflen > sizeof(fc_usb->data)) {
117 		err("Buffer size bigger than max URB control message\n");
118 		return -EIO;
119 	}
120 
121 	switch (req) {
122 	case B2C2_USB_READ_V8_MEM:
123 		nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ;
124 		request_type |= USB_DIR_IN;
125 		pipe = B2C2_USB_CTRL_PIPE_IN;
126 		break;
127 	case B2C2_USB_WRITE_V8_MEM:
128 		wIndex |= pbBuffer[0];
129 		request_type |= USB_DIR_OUT;
130 		nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
131 		pipe = B2C2_USB_CTRL_PIPE_OUT;
132 		break;
133 	case B2C2_USB_FLASH_BLOCK:
134 		request_type |= USB_DIR_OUT;
135 		nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
136 		pipe = B2C2_USB_CTRL_PIPE_OUT;
137 		break;
138 	default:
139 		deb_info("unsupported request for v8_mem_req %x.\n", req);
140 		return -EINVAL;
141 	}
142 	deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n", request_type, req,
143 			wAddress, wIndex, buflen);
144 
145 	mutex_lock(&fc_usb->data_mutex);
146 
147 	if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
148 		memcpy(fc_usb->data, pbBuffer, buflen);
149 
150 	ret = usb_control_msg(fc_usb->udev, pipe,
151 			req,
152 			request_type,
153 			wAddress,
154 			wIndex,
155 			fc_usb->data,
156 			buflen,
157 			nWaitTime * HZ);
158 	if (ret != buflen)
159 		ret = -EIO;
160 
161 	if (ret >= 0) {
162 		ret = 0;
163 		if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
164 			memcpy(pbBuffer, fc_usb->data, buflen);
165 	}
166 
167 	mutex_unlock(&fc_usb->data_mutex);
168 
169 	debug_dump(pbBuffer, ret, deb_v8);
170 	return ret;
171 }
172 
173 #define bytes_left_to_read_on_page(paddr,buflen) \
174 	((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \
175 	 ? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)))
176 
177 static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb,
178 		flexcop_usb_request_t req, flexcop_usb_mem_page_t page_start,
179 		u32 addr, int extended, u8 *buf, u32 len)
180 {
181 	int i,ret = 0;
182 	u16 wMax;
183 	u32 pagechunk = 0;
184 
185 	switch(req) {
186 	case B2C2_USB_READ_V8_MEM:
187 		wMax = USB_MEM_READ_MAX;
188 		break;
189 	case B2C2_USB_WRITE_V8_MEM:
190 		wMax = USB_MEM_WRITE_MAX;
191 		break;
192 	case B2C2_USB_FLASH_BLOCK:
193 		wMax = USB_FLASH_MAX;
194 		break;
195 	default:
196 		return -EINVAL;
197 		break;
198 	}
199 	for (i = 0; i < len;) {
200 		pagechunk =
201 			wMax < bytes_left_to_read_on_page(addr, len) ?
202 				wMax :
203 				bytes_left_to_read_on_page(addr, len);
204 		deb_info("%x\n",
205 			(addr & V8_MEMORY_PAGE_MASK) |
206 				(V8_MEMORY_EXTENDED*extended));
207 
208 		ret = flexcop_usb_v8_memory_req(fc_usb, req,
209 			page_start + (addr / V8_MEMORY_PAGE_SIZE),
210 			(addr & V8_MEMORY_PAGE_MASK) |
211 				(V8_MEMORY_EXTENDED*extended),
212 			&buf[i], pagechunk);
213 
214 		if (ret < 0)
215 			return ret;
216 		addr += pagechunk;
217 		len -= pagechunk;
218 	}
219 	return 0;
220 }
221 
222 static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended)
223 {
224 	return flexcop_usb_memory_req(fc->bus_specific, B2C2_USB_READ_V8_MEM,
225 		V8_MEMORY_PAGE_FLASH, 0x1f010, 1,
226 		fc->dvb_adapter.proposed_mac, 6);
227 }
228 
229 /* usb i2c stuff */
230 static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
231 		flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
232 		u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
233 {
234 	struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
235 	u16 wValue, wIndex;
236 	int nWaitTime, pipe, ret;
237 	u8 request_type = USB_TYPE_VENDOR;
238 
239 	if (buflen > sizeof(fc_usb->data)) {
240 		err("Buffer size bigger than max URB control message\n");
241 		return -EIO;
242 	}
243 
244 	switch (func) {
245 	case USB_FUNC_I2C_WRITE:
246 	case USB_FUNC_I2C_MULTIWRITE:
247 	case USB_FUNC_I2C_REPEATWRITE:
248 		/* DKT 020208 - add this to support special case of DiSEqC */
249 	case USB_FUNC_I2C_CHECKWRITE:
250 		pipe = B2C2_USB_CTRL_PIPE_OUT;
251 		nWaitTime = 2;
252 		request_type |= USB_DIR_OUT;
253 		break;
254 	case USB_FUNC_I2C_READ:
255 	case USB_FUNC_I2C_REPEATREAD:
256 		pipe = B2C2_USB_CTRL_PIPE_IN;
257 		nWaitTime = 2;
258 		request_type |= USB_DIR_IN;
259 		break;
260 	default:
261 		deb_info("unsupported function for i2c_req %x\n", func);
262 		return -EINVAL;
263 	}
264 	wValue = (func << 8) | (i2c->port << 4);
265 	wIndex = (chipaddr << 8 ) | addr;
266 
267 	deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",
268 			func, request_type, req,
269 			wValue & 0xff, wValue >> 8,
270 			wIndex & 0xff, wIndex >> 8);
271 
272 	mutex_lock(&fc_usb->data_mutex);
273 
274 	if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
275 		memcpy(fc_usb->data, buf, buflen);
276 
277 	ret = usb_control_msg(fc_usb->udev, pipe,
278 			req,
279 			request_type,
280 			wValue,
281 			wIndex,
282 			fc_usb->data,
283 			buflen,
284 			nWaitTime * HZ);
285 
286 	if (ret != buflen)
287 		ret = -EIO;
288 
289 	if (ret >= 0) {
290 		ret = 0;
291 		if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
292 			memcpy(buf, fc_usb->data, buflen);
293 	}
294 
295 	mutex_unlock(&fc_usb->data_mutex);
296 
297 	return 0;
298 }
299 
300 /* actual bus specific access functions,
301    make sure prototype are/will be equal to pci */
302 static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc,
303 	flexcop_ibi_register reg)
304 {
305 	flexcop_ibi_value val;
306 	val.raw = 0;
307 	flexcop_usb_readwrite_dw(fc, reg, &val.raw, 1);
308 	return val;
309 }
310 
311 static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc,
312 		flexcop_ibi_register reg, flexcop_ibi_value val)
313 {
314 	return flexcop_usb_readwrite_dw(fc, reg, &val.raw, 0);
315 }
316 
317 static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
318 		flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
319 {
320 	if (op == FC_READ)
321 		return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
322 				USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
323 	else
324 		return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
325 				USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
326 }
327 
328 static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb,
329 	u8 *buffer, int buffer_length)
330 {
331 	u8 *b;
332 	int l;
333 
334 	deb_ts("tmp_buffer_length=%d, buffer_length=%d\n",
335 		fc_usb->tmp_buffer_length, buffer_length);
336 
337 	if (fc_usb->tmp_buffer_length > 0) {
338 		memcpy(fc_usb->tmp_buffer+fc_usb->tmp_buffer_length, buffer,
339 				buffer_length);
340 		fc_usb->tmp_buffer_length += buffer_length;
341 		b = fc_usb->tmp_buffer;
342 		l = fc_usb->tmp_buffer_length;
343 	} else {
344 		b=buffer;
345 		l=buffer_length;
346 	}
347 
348 	while (l >= 190) {
349 		if (*b == 0xff) {
350 			switch (*(b+1) & 0x03) {
351 			case 0x01: /* media packet */
352 				if (*(b+2) == 0x47)
353 					flexcop_pass_dmx_packets(
354 							fc_usb->fc_dev, b+2, 1);
355 				else
356 					deb_ts("not ts packet %*ph\n", 4, b+2);
357 				b += 190;
358 				l -= 190;
359 				break;
360 			default:
361 				deb_ts("wrong packet type\n");
362 				l = 0;
363 				break;
364 			}
365 		} else {
366 			deb_ts("wrong header\n");
367 			l = 0;
368 		}
369 	}
370 
371 	if (l>0)
372 		memcpy(fc_usb->tmp_buffer, b, l);
373 	fc_usb->tmp_buffer_length = l;
374 }
375 
376 static void flexcop_usb_urb_complete(struct urb *urb)
377 {
378 	struct flexcop_usb *fc_usb = urb->context;
379 	int i;
380 
381 	if (urb->actual_length > 0)
382 		deb_ts("urb completed, bufsize: %d actlen; %d\n",
383 			urb->transfer_buffer_length, urb->actual_length);
384 
385 	for (i = 0; i < urb->number_of_packets; i++) {
386 		if (urb->iso_frame_desc[i].status < 0) {
387 			err("iso frame descriptor %d has an error: %d\n", i,
388 				urb->iso_frame_desc[i].status);
389 		} else
390 			if (urb->iso_frame_desc[i].actual_length > 0) {
391 				deb_ts("passed %d bytes to the demux\n",
392 					urb->iso_frame_desc[i].actual_length);
393 
394 				flexcop_usb_process_frame(fc_usb,
395 					urb->transfer_buffer +
396 						urb->iso_frame_desc[i].offset,
397 					urb->iso_frame_desc[i].actual_length);
398 			}
399 		urb->iso_frame_desc[i].status = 0;
400 		urb->iso_frame_desc[i].actual_length = 0;
401 	}
402 	usb_submit_urb(urb,GFP_ATOMIC);
403 }
404 
405 static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff)
406 {
407 	/* submit/kill iso packets */
408 	return 0;
409 }
410 
411 static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb)
412 {
413 	int i;
414 	for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
415 		if (fc_usb->iso_urb[i] != NULL) {
416 			deb_ts("unlinking/killing urb no. %d\n",i);
417 			usb_kill_urb(fc_usb->iso_urb[i]);
418 			usb_free_urb(fc_usb->iso_urb[i]);
419 		}
420 
421 	if (fc_usb->iso_buffer != NULL)
422 		usb_free_coherent(fc_usb->udev,
423 			fc_usb->buffer_size, fc_usb->iso_buffer,
424 			fc_usb->dma_addr);
425 }
426 
427 static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb)
428 {
429 	u16 frame_size = le16_to_cpu(
430 		fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
431 	int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO *
432 		frame_size, i, j, ret;
433 	int buffer_offset = 0;
434 
435 	deb_ts("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
436 	       B2C2_USB_NUM_ISO_URB,
437 			B2C2_USB_FRAMES_PER_ISO, frame_size, bufsize);
438 
439 	fc_usb->iso_buffer = usb_alloc_coherent(fc_usb->udev,
440 			bufsize, GFP_KERNEL, &fc_usb->dma_addr);
441 	if (fc_usb->iso_buffer == NULL)
442 		return -ENOMEM;
443 
444 	memset(fc_usb->iso_buffer, 0, bufsize);
445 	fc_usb->buffer_size = bufsize;
446 
447 	/* creating iso urbs */
448 	for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
449 		fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,
450 			GFP_ATOMIC);
451 		if (fc_usb->iso_urb[i] == NULL) {
452 			ret = -ENOMEM;
453 			goto urb_error;
454 		}
455 	}
456 
457 	/* initialising and submitting iso urbs */
458 	for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
459 		int frame_offset = 0;
460 		struct urb *urb = fc_usb->iso_urb[i];
461 		deb_ts("initializing and submitting urb no. %d (buf_offset: %d).\n",
462 		       i, buffer_offset);
463 
464 		urb->dev = fc_usb->udev;
465 		urb->context = fc_usb;
466 		urb->complete = flexcop_usb_urb_complete;
467 		urb->pipe = B2C2_USB_DATA_PIPE;
468 		urb->transfer_flags = URB_ISO_ASAP;
469 		urb->interval = 1;
470 		urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
471 		urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
472 		urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset;
473 
474 		buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
475 		for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
476 			deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",
477 					i, j, frame_offset);
478 			urb->iso_frame_desc[j].offset = frame_offset;
479 			urb->iso_frame_desc[j].length = frame_size;
480 			frame_offset += frame_size;
481 		}
482 
483 		if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) {
484 			err("submitting urb %d failed with %d.", i, ret);
485 			goto urb_error;
486 		}
487 		deb_ts("submitted urb no. %d.\n",i);
488 	}
489 
490 	/* SRAM */
491 	flexcop_sram_set_dest(fc_usb->fc_dev, FC_SRAM_DEST_MEDIA |
492 			FC_SRAM_DEST_NET | FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI,
493 			FC_SRAM_DEST_TARGET_WAN_USB);
494 	flexcop_wan_set_speed(fc_usb->fc_dev, FC_WAN_SPEED_8MBITS);
495 	flexcop_sram_ctrl(fc_usb->fc_dev, 1, 1, 1);
496 	return 0;
497 
498 urb_error:
499 	flexcop_usb_transfer_exit(fc_usb);
500 	return ret;
501 }
502 
503 static int flexcop_usb_init(struct flexcop_usb *fc_usb)
504 {
505 	/* use the alternate setting with the larges buffer */
506 	usb_set_interface(fc_usb->udev,0,1);
507 	switch (fc_usb->udev->speed) {
508 	case USB_SPEED_LOW:
509 		err("cannot handle USB speed because it is too slow.");
510 		return -ENODEV;
511 		break;
512 	case USB_SPEED_FULL:
513 		info("running at FULL speed.");
514 		break;
515 	case USB_SPEED_HIGH:
516 		info("running at HIGH speed.");
517 		break;
518 	case USB_SPEED_UNKNOWN: /* fall through */
519 	default:
520 		err("cannot handle USB speed because it is unknown.");
521 		return -ENODEV;
522 	}
523 	usb_set_intfdata(fc_usb->uintf, fc_usb);
524 	return 0;
525 }
526 
527 static void flexcop_usb_exit(struct flexcop_usb *fc_usb)
528 {
529 	usb_set_intfdata(fc_usb->uintf, NULL);
530 }
531 
532 static int flexcop_usb_probe(struct usb_interface *intf,
533 		const struct usb_device_id *id)
534 {
535 	struct usb_device *udev = interface_to_usbdev(intf);
536 	struct flexcop_usb *fc_usb = NULL;
537 	struct flexcop_device *fc = NULL;
538 	int ret;
539 
540 	if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
541 		err("out of memory\n");
542 		return -ENOMEM;
543 	}
544 
545 	/* general flexcop init */
546 	fc_usb = fc->bus_specific;
547 	fc_usb->fc_dev = fc;
548 	mutex_init(&fc_usb->data_mutex);
549 
550 	fc->read_ibi_reg  = flexcop_usb_read_ibi_reg;
551 	fc->write_ibi_reg = flexcop_usb_write_ibi_reg;
552 	fc->i2c_request = flexcop_usb_i2c_request;
553 	fc->get_mac_addr = flexcop_usb_get_mac_addr;
554 
555 	fc->stream_control = flexcop_usb_stream_control;
556 
557 	fc->pid_filtering = 1;
558 	fc->bus_type = FC_USB;
559 
560 	fc->dev = &udev->dev;
561 	fc->owner = THIS_MODULE;
562 
563 	/* bus specific part */
564 	fc_usb->udev = udev;
565 	fc_usb->uintf = intf;
566 	if ((ret = flexcop_usb_init(fc_usb)) != 0)
567 		goto err_kfree;
568 
569 	/* init flexcop */
570 	if ((ret = flexcop_device_initialize(fc)) != 0)
571 		goto err_usb_exit;
572 
573 	/* xfer init */
574 	if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0)
575 		goto err_fc_exit;
576 
577 	info("%s successfully initialized and connected.", DRIVER_NAME);
578 	return 0;
579 
580 err_fc_exit:
581 	flexcop_device_exit(fc);
582 err_usb_exit:
583 	flexcop_usb_exit(fc_usb);
584 err_kfree:
585 	flexcop_device_kfree(fc);
586 	return ret;
587 }
588 
589 static void flexcop_usb_disconnect(struct usb_interface *intf)
590 {
591 	struct flexcop_usb *fc_usb = usb_get_intfdata(intf);
592 	flexcop_usb_transfer_exit(fc_usb);
593 	flexcop_device_exit(fc_usb->fc_dev);
594 	flexcop_usb_exit(fc_usb);
595 	flexcop_device_kfree(fc_usb->fc_dev);
596 	info("%s successfully deinitialized and disconnected.", DRIVER_NAME);
597 }
598 
599 static const struct usb_device_id flexcop_usb_table[] = {
600 	{ USB_DEVICE(0x0af7, 0x0101) },
601 	{ }
602 };
603 MODULE_DEVICE_TABLE (usb, flexcop_usb_table);
604 
605 /* usb specific object needed to register this driver with the usb subsystem */
606 static struct usb_driver flexcop_usb_driver = {
607 	.name		= "b2c2_flexcop_usb",
608 	.probe		= flexcop_usb_probe,
609 	.disconnect = flexcop_usb_disconnect,
610 	.id_table	= flexcop_usb_table,
611 };
612 
613 module_usb_driver(flexcop_usb_driver);
614 
615 MODULE_AUTHOR(DRIVER_AUTHOR);
616 MODULE_DESCRIPTION(DRIVER_NAME);
617 MODULE_LICENSE("GPL");
618