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1 /*
2  * This file is part of linux driver the digital TV devices equipped with B2C2 FlexcopII(b)/III
3  *
4  * flexcop-usb.c - covers the USB part.
5  *
6  * see flexcop.c for copyright information.
7  */
8 
9 #define FC_LOG_PREFIX "flexcop_usb"
10 #include "flexcop-usb.h"
11 #include "flexcop-common.h"
12 
13 /* Version information */
14 #define DRIVER_VERSION "0.1"
15 #define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV USB Driver"
16 #define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>"
17 
18 /* debug */
19 #ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
20 #define dprintk(level,args...) \
21 	    do { if ((debug & level)) { printk(args); } } while (0)
22 #define debug_dump(b,l,method) {\
23 	int i; \
24 	for (i = 0; i < l; i++) method("%02x ", b[i]); \
25 	method("\n");\
26 }
27 
28 #define DEBSTATUS ""
29 #else
30 #define dprintk(level,args...)
31 #define debug_dump(b,l,method)
32 #define DEBSTATUS " (debugging is not enabled)"
33 #endif
34 
35 static int debug;
36 module_param(debug, int, 0644);
37 MODULE_PARM_DESC(debug, "set debugging level (1=info,ts=2,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 (these are 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) (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
56 #define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
57 
58 /*
59  * DKT 020228
60  * - forget about this VENDOR_BUFFER_SIZE, read and write register
61  *   deal with DWORD or 4 bytes, that should be should from now on
62  * - from now on, we don't support anything older than firm 1.00
63  *   I eliminated the write register as a 2 trip of writing hi word and lo word
64  *   and force this to write only 4 bytes at a time.
65  *   NOTE: this should work with all the firmware from 1.00 and newer
66  */
flexcop_usb_readwrite_dw(struct flexcop_device * fc,u16 wRegOffsPCI,u32 * val,u8 read)67 static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, u32 *val, u8 read)
68 {
69 	struct flexcop_usb *fc_usb = fc->bus_specific;
70 	u8 request = read ? B2C2_USB_READ_REG : B2C2_USB_WRITE_REG;
71 	u8 request_type = (read ? USB_DIR_IN : USB_DIR_OUT) | USB_TYPE_VENDOR;
72 	u8 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) | (read ? 0x80 : 0);
73 
74 	int len = usb_control_msg(fc_usb->udev,
75 			read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT,
76 			request,
77 			request_type,  /* 0xc0 read or 0x40 write*/
78 			wAddress,
79 			0,
80 			val,
81 			sizeof(u32),
82 			B2C2_WAIT_FOR_OPERATION_RDW * HZ);
83 
84 	if (len != sizeof(u32)) {
85 		err("error while %s dword from %d (%d).",read ? "reading" : "writing",
86 			wAddress,wRegOffsPCI);
87 		return -EIO;
88 	}
89 	return 0;
90 }
91 
92 /*
93  * DKT 010817 - add support for V8 memory read/write and flash update
94  */
flexcop_usb_v8_memory_req(struct flexcop_usb * fc_usb,flexcop_usb_request_t req,u8 page,u16 wAddress,u8 * pbBuffer,u32 buflen)95 static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb,
96 		flexcop_usb_request_t req, u8 page, u16 wAddress,
97 		u8 *pbBuffer,u32 buflen)
98 {
99 //	u8 dwRequestType;
100 	u8 request_type = USB_TYPE_VENDOR;
101 	u16 wIndex;
102 	int nWaitTime,pipe,len;
103 
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 //			dwRequestType = (u8) RTYPE_READ_V8_MEMORY;
111 			pipe = B2C2_USB_CTRL_PIPE_IN;
112 		break;
113 		case B2C2_USB_WRITE_V8_MEM:
114 			wIndex |= pbBuffer[0];
115 			request_type |= USB_DIR_OUT;
116 			nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
117 //			dwRequestType = (u8) RTYPE_WRITE_V8_MEMORY;
118 			pipe = B2C2_USB_CTRL_PIPE_OUT;
119 		break;
120 		case B2C2_USB_FLASH_BLOCK:
121 			request_type |= USB_DIR_OUT;
122 			nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
123 //			dwRequestType = (u8) RTYPE_WRITE_V8_FLASH;
124 			pipe = B2C2_USB_CTRL_PIPE_OUT;
125 		break;
126 		default:
127 			deb_info("unsupported request for v8_mem_req %x.\n",req);
128 		return -EINVAL;
129 	}
130 	deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n",request_type,req,
131 			wAddress,wIndex,buflen);
132 
133 	len = usb_control_msg(fc_usb->udev,pipe,
134 			req,
135 			request_type,
136 			wAddress,
137 			wIndex,
138 			pbBuffer,
139 			buflen,
140 			nWaitTime * HZ);
141 
142 	debug_dump(pbBuffer,len,deb_v8);
143 
144 	return len == buflen ? 0 : -EIO;
145 }
146 
147 #define bytes_left_to_read_on_page(paddr,buflen) \
148 			((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \
149 			? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)))
150 
flexcop_usb_memory_req(struct flexcop_usb * fc_usb,flexcop_usb_request_t req,flexcop_usb_mem_page_t page_start,u32 addr,int extended,u8 * buf,u32 len)151 static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb,flexcop_usb_request_t req,
152 		flexcop_usb_mem_page_t page_start, u32 addr, int extended, u8 *buf, u32 len)
153 {
154 	int i,ret = 0;
155 	u16 wMax;
156 	u32 pagechunk = 0;
157 
158 	switch(req) {
159 		case B2C2_USB_READ_V8_MEM:  wMax = USB_MEM_READ_MAX; break;
160 		case B2C2_USB_WRITE_V8_MEM:	wMax = USB_MEM_WRITE_MAX; break;
161 		case B2C2_USB_FLASH_BLOCK:  wMax = USB_FLASH_MAX; break;
162 		default:
163 			return -EINVAL;
164 		break;
165 	}
166 	for (i = 0; i < len;) {
167 		pagechunk = wMax < bytes_left_to_read_on_page(addr,len) ? wMax : bytes_left_to_read_on_page(addr,len);
168 		deb_info("%x\n",(addr & V8_MEMORY_PAGE_MASK) | (V8_MEMORY_EXTENDED*extended));
169 		if ((ret = flexcop_usb_v8_memory_req(fc_usb,req,
170 				page_start + (addr / V8_MEMORY_PAGE_SIZE), /* actual page */
171 				(addr & V8_MEMORY_PAGE_MASK) | (V8_MEMORY_EXTENDED*extended),
172 				&buf[i],pagechunk)) < 0)
173 			return ret;
174 
175 		addr += pagechunk;
176 		len -= pagechunk;
177 	}
178 	return 0;
179 }
180 
flexcop_usb_get_mac_addr(struct flexcop_device * fc,int extended)181 static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended)
182 {
183 	return flexcop_usb_memory_req(fc->bus_specific,B2C2_USB_READ_V8_MEM,
184 			V8_MEMORY_PAGE_FLASH,0x1f010,1,fc->dvb_adapter.proposed_mac,6);
185 }
186 
187 #if 0
188 static int flexcop_usb_utility_req(struct flexcop_usb *fc_usb, int set,
189 		flexcop_usb_utility_function_t func, u8 extra, u16 wIndex,
190 		u16 buflen, u8 *pvBuffer)
191 {
192 	u16 wValue;
193 	u8 request_type = (set ? USB_DIR_OUT : USB_DIR_IN) | USB_TYPE_VENDOR;
194 //	u8 dwRequestType = (u8) RTYPE_GENERIC,
195 	int nWaitTime = 2,
196 		pipe = set ? B2C2_USB_CTRL_PIPE_OUT : B2C2_USB_CTRL_PIPE_IN,
197 		len;
198 
199 	wValue = (func << 8) | extra;
200 
201 	len = usb_control_msg(fc_usb->udev,pipe,
202 			B2C2_USB_UTILITY,
203 			request_type,
204 			wValue,
205 			wIndex,
206 			pvBuffer,
207 			buflen,
208 			nWaitTime * HZ);
209 	return len == buflen ? 0 : -EIO;
210 }
211 #endif
212 
213 /* usb i2c stuff */
flexcop_usb_i2c_req(struct flexcop_i2c_adapter * i2c,flexcop_usb_request_t req,flexcop_usb_i2c_function_t func,u8 chipaddr,u8 addr,u8 * buf,u8 buflen)214 static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
215 		flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
216 		u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
217 {
218 	struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
219 	u16 wValue, wIndex;
220 	int nWaitTime,pipe,len;
221 //	u8 dwRequestType;
222 	u8 request_type = USB_TYPE_VENDOR;
223 
224 	switch (func) {
225 		case USB_FUNC_I2C_WRITE:
226 		case USB_FUNC_I2C_MULTIWRITE:
227 		case USB_FUNC_I2C_REPEATWRITE:
228 		/* DKT 020208 - add this to support special case of DiSEqC */
229 		case USB_FUNC_I2C_CHECKWRITE:
230 			pipe = B2C2_USB_CTRL_PIPE_OUT;
231 			nWaitTime = 2;
232 //			dwRequestType = (u8) RTYPE_GENERIC;
233 			request_type |= USB_DIR_OUT;
234 		break;
235 		case USB_FUNC_I2C_READ:
236 		case USB_FUNC_I2C_REPEATREAD:
237 			pipe = B2C2_USB_CTRL_PIPE_IN;
238 			nWaitTime = 2;
239 //			dwRequestType = (u8) RTYPE_GENERIC;
240 			request_type |= USB_DIR_IN;
241 		break;
242 		default:
243 			deb_info("unsupported function for i2c_req %x\n",func);
244 			return -EINVAL;
245 	}
246 	wValue = (func << 8) | (i2c->port << 4);
247 	wIndex = (chipaddr << 8 ) | addr;
248 
249 	deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",func,request_type,req,
250 		wValue & 0xff, wValue >> 8, wIndex & 0xff, wIndex >> 8);
251 
252 	len = usb_control_msg(fc_usb->udev,pipe,
253 			req,
254 			request_type,
255 			wValue,
256 			wIndex,
257 			buf,
258 			buflen,
259 			nWaitTime * HZ);
260 
261 	return len == buflen ? 0 : -EREMOTEIO;
262 }
263 
264 /* actual bus specific access functions, make sure prototype are/will be equal to pci */
flexcop_usb_read_ibi_reg(struct flexcop_device * fc,flexcop_ibi_register reg)265 static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register reg)
266 {
267 	flexcop_ibi_value val;
268 	val.raw = 0;
269 	flexcop_usb_readwrite_dw(fc,reg, &val.raw, 1);
270 	return val;
271 }
272 
flexcop_usb_write_ibi_reg(struct flexcop_device * fc,flexcop_ibi_register reg,flexcop_ibi_value val)273 static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register reg, flexcop_ibi_value val)
274 {
275 	return flexcop_usb_readwrite_dw(fc,reg, &val.raw, 0);
276 }
277 
flexcop_usb_i2c_request(struct flexcop_i2c_adapter * i2c,flexcop_access_op_t op,u8 chipaddr,u8 addr,u8 * buf,u16 len)278 static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
279 	flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
280 {
281 	if (op == FC_READ)
282 		return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
283 			USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
284 	else
285 		return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
286 			USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
287 }
288 
flexcop_usb_process_frame(struct flexcop_usb * fc_usb,u8 * buffer,int buffer_length)289 static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb, u8 *buffer, int buffer_length)
290 {
291 	u8 *b;
292 	int l;
293 
294 	deb_ts("tmp_buffer_length=%d, buffer_length=%d\n", fc_usb->tmp_buffer_length, buffer_length);
295 
296 	if (fc_usb->tmp_buffer_length > 0) {
297 		memcpy(fc_usb->tmp_buffer+fc_usb->tmp_buffer_length, buffer, buffer_length);
298 		fc_usb->tmp_buffer_length += buffer_length;
299 		b = fc_usb->tmp_buffer;
300 		l = fc_usb->tmp_buffer_length;
301 	} else {
302 		b=buffer;
303 		l=buffer_length;
304 	}
305 
306 	while (l >= 190) {
307 		if (*b == 0xff)
308 			switch (*(b+1) & 0x03) {
309 				case 0x01: /* media packet */
310 					if ( *(b+2) == 0x47 )
311 						flexcop_pass_dmx_packets(fc_usb->fc_dev, b+2, 1);
312 					else
313 						deb_ts("not ts packet %02x %02x %02x %02x \n", *(b+2), *(b+3), *(b+4), *(b+5) );
314 
315 					b += 190;
316 					l -= 190;
317 				break;
318 				default:
319 					deb_ts("wrong packet type\n");
320 					l = 0;
321 				break;
322 			}
323 		else {
324 			deb_ts("wrong header\n");
325 			l = 0;
326 		}
327 	}
328 
329 	if (l>0)
330 		memcpy(fc_usb->tmp_buffer, b, l);
331 	fc_usb->tmp_buffer_length = l;
332 }
333 
flexcop_usb_urb_complete(struct urb * urb)334 static void flexcop_usb_urb_complete(struct urb *urb)
335 {
336 	struct flexcop_usb *fc_usb = urb->context;
337 	int i;
338 
339 	if (urb->actual_length > 0)
340 		deb_ts("urb completed, bufsize: %d actlen; %d\n",urb->transfer_buffer_length, urb->actual_length);
341 
342 	for (i = 0; i < urb->number_of_packets; i++) {
343 		if (urb->iso_frame_desc[i].status < 0) {
344 			err("iso frame descriptor %d has an error: %d\n",i,urb->iso_frame_desc[i].status);
345 		} else
346 			if (urb->iso_frame_desc[i].actual_length > 0) {
347 				deb_ts("passed %d bytes to the demux\n",urb->iso_frame_desc[i].actual_length);
348 
349 				flexcop_usb_process_frame(fc_usb,
350 					urb->transfer_buffer + urb->iso_frame_desc[i].offset,
351 					urb->iso_frame_desc[i].actual_length);
352 		}
353 		urb->iso_frame_desc[i].status = 0;
354 		urb->iso_frame_desc[i].actual_length = 0;
355 	}
356 
357 	usb_submit_urb(urb,GFP_ATOMIC);
358 }
359 
flexcop_usb_stream_control(struct flexcop_device * fc,int onoff)360 static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff)
361 {
362 	/* submit/kill iso packets */
363 	return 0;
364 }
365 
flexcop_usb_transfer_exit(struct flexcop_usb * fc_usb)366 static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb)
367 {
368 	int i;
369 	for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
370 		if (fc_usb->iso_urb[i] != NULL) {
371 			deb_ts("unlinking/killing urb no. %d\n",i);
372 			usb_kill_urb(fc_usb->iso_urb[i]);
373 			usb_free_urb(fc_usb->iso_urb[i]);
374 		}
375 
376 	if (fc_usb->iso_buffer != NULL)
377 		pci_free_consistent(NULL,fc_usb->buffer_size, fc_usb->iso_buffer, fc_usb->dma_addr);
378 }
379 
flexcop_usb_transfer_init(struct flexcop_usb * fc_usb)380 static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb)
381 {
382 	u16 frame_size = le16_to_cpu(fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
383 	int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO * frame_size,i,j,ret;
384 	int buffer_offset = 0;
385 
386 	deb_ts("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
387 			B2C2_USB_NUM_ISO_URB, B2C2_USB_FRAMES_PER_ISO, frame_size,bufsize);
388 
389 	fc_usb->iso_buffer = pci_alloc_consistent(NULL,bufsize,&fc_usb->dma_addr);
390 	if (fc_usb->iso_buffer == NULL)
391 		return -ENOMEM;
392 	memset(fc_usb->iso_buffer, 0, bufsize);
393 	fc_usb->buffer_size = bufsize;
394 
395 	/* creating iso urbs */
396 	for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
397 		if (!(fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,GFP_ATOMIC))) {
398 			ret = -ENOMEM;
399 			goto urb_error;
400 		}
401 	/* initialising and submitting iso urbs */
402 	for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
403 		int frame_offset = 0;
404 		struct urb *urb = fc_usb->iso_urb[i];
405 		deb_ts("initializing and submitting urb no. %d (buf_offset: %d).\n",i,buffer_offset);
406 
407 		urb->dev = fc_usb->udev;
408 		urb->context = fc_usb;
409 		urb->complete = flexcop_usb_urb_complete;
410 		urb->pipe = B2C2_USB_DATA_PIPE;
411 		urb->transfer_flags = URB_ISO_ASAP;
412 		urb->interval = 1;
413 		urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
414 		urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
415 		urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset;
416 
417 		buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
418 		for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
419 			deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",i,j,frame_offset);
420 			urb->iso_frame_desc[j].offset = frame_offset;
421 			urb->iso_frame_desc[j].length = frame_size;
422 			frame_offset += frame_size;
423 		}
424 
425 		if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) {
426 			err("submitting urb %d failed with %d.",i,ret);
427 			goto urb_error;
428 		}
429 		deb_ts("submitted urb no. %d.\n",i);
430 	}
431 
432 /* SRAM */
433 
434 	flexcop_sram_set_dest(fc_usb->fc_dev,FC_SRAM_DEST_MEDIA | FC_SRAM_DEST_NET |
435 			FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI, FC_SRAM_DEST_TARGET_WAN_USB);
436 	flexcop_wan_set_speed(fc_usb->fc_dev,FC_WAN_SPEED_8MBITS);
437 	flexcop_sram_ctrl(fc_usb->fc_dev,1,1,1);
438 
439 	return 0;
440 
441 urb_error:
442 	flexcop_usb_transfer_exit(fc_usb);
443 	return ret;
444 }
445 
flexcop_usb_init(struct flexcop_usb * fc_usb)446 static int flexcop_usb_init(struct flexcop_usb *fc_usb)
447 {
448 	/* use the alternate setting with the larges buffer */
449 	usb_set_interface(fc_usb->udev,0,1);
450 	switch (fc_usb->udev->speed) {
451 		case USB_SPEED_LOW:
452 			err("cannot handle USB speed because it is to sLOW.");
453 			return -ENODEV;
454 			break;
455 		case USB_SPEED_FULL:
456 			info("running at FULL speed.");
457 			break;
458 		case USB_SPEED_HIGH:
459 			info("running at HIGH speed.");
460 			break;
461 		case USB_SPEED_UNKNOWN: /* fall through */
462 		default:
463 			err("cannot handle USB speed because it is unkown.");
464 			return -ENODEV;
465 	}
466 	usb_set_intfdata(fc_usb->uintf, fc_usb);
467 	return 0;
468 }
469 
flexcop_usb_exit(struct flexcop_usb * fc_usb)470 static void flexcop_usb_exit(struct flexcop_usb *fc_usb)
471 {
472 	usb_set_intfdata(fc_usb->uintf, NULL);
473 }
474 
flexcop_usb_probe(struct usb_interface * intf,const struct usb_device_id * id)475 static int flexcop_usb_probe(struct usb_interface *intf,
476 		const struct usb_device_id *id)
477 {
478 	struct usb_device *udev = interface_to_usbdev(intf);
479 	struct flexcop_usb *fc_usb = NULL;
480 	struct flexcop_device *fc = NULL;
481 	int ret;
482 
483 	if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
484 		err("out of memory\n");
485 		return -ENOMEM;
486 	}
487 
488 /* general flexcop init */
489 	fc_usb = fc->bus_specific;
490 	fc_usb->fc_dev = fc;
491 
492 	fc->read_ibi_reg  = flexcop_usb_read_ibi_reg;
493 	fc->write_ibi_reg = flexcop_usb_write_ibi_reg;
494 	fc->i2c_request = flexcop_usb_i2c_request;
495 	fc->get_mac_addr = flexcop_usb_get_mac_addr;
496 
497 	fc->stream_control = flexcop_usb_stream_control;
498 
499 	fc->pid_filtering = 1;
500 	fc->bus_type = FC_USB;
501 
502 	fc->dev = &udev->dev;
503 	fc->owner = THIS_MODULE;
504 
505 /* bus specific part */
506 	fc_usb->udev = udev;
507 	fc_usb->uintf = intf;
508 	if ((ret = flexcop_usb_init(fc_usb)) != 0)
509 		goto err_kfree;
510 
511 /* init flexcop */
512 	if ((ret = flexcop_device_initialize(fc)) != 0)
513 		goto err_usb_exit;
514 
515 /* xfer init */
516 	if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0)
517 		goto err_fc_exit;
518 
519 	info("%s successfully initialized and connected.",DRIVER_NAME);
520 	return 0;
521 
522 err_fc_exit:
523 	flexcop_device_exit(fc);
524 err_usb_exit:
525 	flexcop_usb_exit(fc_usb);
526 err_kfree:
527 	flexcop_device_kfree(fc);
528 	return ret;
529 }
530 
flexcop_usb_disconnect(struct usb_interface * intf)531 static void flexcop_usb_disconnect(struct usb_interface *intf)
532 {
533 	struct flexcop_usb *fc_usb = usb_get_intfdata(intf);
534 	flexcop_usb_transfer_exit(fc_usb);
535 	flexcop_device_exit(fc_usb->fc_dev);
536 	flexcop_usb_exit(fc_usb);
537 	flexcop_device_kfree(fc_usb->fc_dev);
538 	info("%s successfully deinitialized and disconnected.",DRIVER_NAME);
539 }
540 
541 static struct usb_device_id flexcop_usb_table [] = {
542 	    { USB_DEVICE(0x0af7, 0x0101) },
543 	    { }
544 };
545 MODULE_DEVICE_TABLE (usb, flexcop_usb_table);
546 
547 /* usb specific object needed to register this driver with the usb subsystem */
548 static struct usb_driver flexcop_usb_driver = {
549 	.name		= "b2c2_flexcop_usb",
550 	.probe		= flexcop_usb_probe,
551 	.disconnect = flexcop_usb_disconnect,
552 	.id_table	= flexcop_usb_table,
553 };
554 
555 /* module stuff */
flexcop_usb_module_init(void)556 static int __init flexcop_usb_module_init(void)
557 {
558 	int result;
559 	if ((result = usb_register(&flexcop_usb_driver))) {
560 		err("usb_register failed. (%d)",result);
561 		return result;
562 	}
563 
564 	return 0;
565 }
566 
flexcop_usb_module_exit(void)567 static void __exit flexcop_usb_module_exit(void)
568 {
569 	/* deregister this driver from the USB subsystem */
570 	usb_deregister(&flexcop_usb_driver);
571 }
572 
573 module_init(flexcop_usb_module_init);
574 module_exit(flexcop_usb_module_exit);
575 
576 MODULE_AUTHOR(DRIVER_AUTHOR);
577 MODULE_DESCRIPTION(DRIVER_NAME);
578 MODULE_LICENSE("GPL");
579