1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III |
4 | * flexcop-usb.c - covers the USB part |
5 | * see flexcop.c for copyright information |
6 | */ |
7 | #define FC_LOG_PREFIX "flexcop_usb" |
8 | #include "flexcop-usb.h" |
9 | #include "flexcop-common.h" |
10 | |
11 | /* Version information */ |
12 | #define DRIVER_VERSION "0.1" |
13 | #define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV USB Driver" |
14 | #define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@posteo.de>" |
15 | |
16 | /* debug */ |
17 | #ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG |
18 | #define dprintk(level, args...) \ |
19 | do { if ((debug & (level))) printk(args); } while (0) |
20 | |
21 | #define debug_dump(b, l, method) do {\ |
22 | int i; \ |
23 | for (i = 0; i < l; i++) \ |
24 | method("%02x ", b[i]); \ |
25 | method("\n"); \ |
26 | } while (0) |
27 | |
28 | #define DEBSTATUS "" |
29 | #else |
30 | #define dprintk(level, args...) no_printk(args) |
31 | #define debug_dump(b, l, method) do { } while (0) |
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 (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 | int ret; |
77 | |
78 | mutex_lock(&fc_usb->data_mutex); |
79 | if (!read) |
80 | memcpy(fc_usb->data, val, sizeof(*val)); |
81 | |
82 | ret = usb_control_msg(dev: fc_usb->udev, |
83 | pipe: read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT, |
84 | request, |
85 | requesttype: request_type, /* 0xc0 read or 0x40 write */ |
86 | value: wAddress, |
87 | index: 0, |
88 | data: fc_usb->data, |
89 | size: sizeof(u32), |
90 | B2C2_WAIT_FOR_OPERATION_RDW); |
91 | |
92 | if (ret != sizeof(u32)) { |
93 | err("error while %s dword from %d (%d)." , read ? "reading" : |
94 | "writing" , wAddress, wRegOffsPCI); |
95 | if (ret >= 0) |
96 | ret = -EIO; |
97 | } |
98 | |
99 | if (read && ret >= 0) |
100 | memcpy(val, fc_usb->data, sizeof(*val)); |
101 | mutex_unlock(lock: &fc_usb->data_mutex); |
102 | |
103 | return ret; |
104 | } |
105 | /* |
106 | * DKT 010817 - add support for V8 memory read/write and flash update |
107 | */ |
108 | static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb, |
109 | flexcop_usb_request_t req, u8 page, u16 wAddress, |
110 | u8 *pbBuffer, u32 buflen) |
111 | { |
112 | u8 request_type = USB_TYPE_VENDOR; |
113 | u16 wIndex; |
114 | int nWaitTime, pipe, ret; |
115 | wIndex = page << 8; |
116 | |
117 | if (buflen > sizeof(fc_usb->data)) { |
118 | err("Buffer size bigger than max URB control message\n" ); |
119 | return -EIO; |
120 | } |
121 | |
122 | switch (req) { |
123 | case B2C2_USB_READ_V8_MEM: |
124 | nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ; |
125 | request_type |= USB_DIR_IN; |
126 | pipe = B2C2_USB_CTRL_PIPE_IN; |
127 | break; |
128 | case B2C2_USB_WRITE_V8_MEM: |
129 | wIndex |= pbBuffer[0]; |
130 | request_type |= USB_DIR_OUT; |
131 | nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE; |
132 | pipe = B2C2_USB_CTRL_PIPE_OUT; |
133 | break; |
134 | case B2C2_USB_FLASH_BLOCK: |
135 | request_type |= USB_DIR_OUT; |
136 | nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH; |
137 | pipe = B2C2_USB_CTRL_PIPE_OUT; |
138 | break; |
139 | default: |
140 | deb_info("unsupported request for v8_mem_req %x.\n" , req); |
141 | return -EINVAL; |
142 | } |
143 | deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n" , request_type, req, |
144 | wAddress, wIndex, buflen); |
145 | |
146 | mutex_lock(&fc_usb->data_mutex); |
147 | |
148 | if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) |
149 | memcpy(fc_usb->data, pbBuffer, buflen); |
150 | |
151 | ret = usb_control_msg(dev: fc_usb->udev, pipe, |
152 | request: req, |
153 | requesttype: request_type, |
154 | value: wAddress, |
155 | index: wIndex, |
156 | data: fc_usb->data, |
157 | size: buflen, |
158 | timeout: nWaitTime); |
159 | if (ret != buflen) |
160 | ret = -EIO; |
161 | |
162 | if (ret >= 0) { |
163 | ret = 0; |
164 | if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) |
165 | memcpy(pbBuffer, fc_usb->data, buflen); |
166 | } |
167 | |
168 | mutex_unlock(lock: &fc_usb->data_mutex); |
169 | |
170 | debug_dump(pbBuffer, ret, deb_v8); |
171 | return ret; |
172 | } |
173 | |
174 | #define bytes_left_to_read_on_page(paddr, buflen) \ |
175 | ((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \ |
176 | ? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK))) |
177 | |
178 | static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb, |
179 | flexcop_usb_request_t req, flexcop_usb_mem_page_t page_start, |
180 | u32 addr, int extended, u8 *buf, u32 len) |
181 | { |
182 | int i, ret = 0; |
183 | u16 wMax; |
184 | u32 pagechunk = 0; |
185 | |
186 | switch (req) { |
187 | case B2C2_USB_READ_V8_MEM: |
188 | wMax = USB_MEM_READ_MAX; |
189 | break; |
190 | case B2C2_USB_WRITE_V8_MEM: |
191 | wMax = USB_MEM_WRITE_MAX; |
192 | break; |
193 | case B2C2_USB_FLASH_BLOCK: |
194 | wMax = USB_FLASH_MAX; |
195 | break; |
196 | default: |
197 | return -EINVAL; |
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: page_start + (addr / V8_MEMORY_PAGE_SIZE), |
210 | wAddress: (addr & V8_MEMORY_PAGE_MASK) | |
211 | (V8_MEMORY_EXTENDED*extended), |
212 | pbBuffer: &buf[i], buflen: 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_usb: fc->bus_specific, req: B2C2_USB_READ_V8_MEM, |
225 | page_start: V8_MEMORY_PAGE_FLASH, addr: 0x1f010, extended: 1, |
226 | buf: fc->dvb_adapter.proposed_mac, len: 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 = 2000; |
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 = 2000; |
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(dev: fc_usb->udev, pipe, |
278 | request: req, |
279 | requesttype: request_type, |
280 | value: wValue, |
281 | index: wIndex, |
282 | data: fc_usb->data, |
283 | size: buflen, |
284 | timeout: nWaitTime); |
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(lock: &fc_usb->data_mutex); |
296 | |
297 | return ret; |
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, wRegOffsPCI: reg, val: &val.raw, read: 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, wRegOffsPCI: reg, val: &val.raw, read: 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, req: B2C2_USB_I2C_REQUEST, |
322 | func: USB_FUNC_I2C_READ, chipaddr, addr, buf, buflen: len); |
323 | else |
324 | return flexcop_usb_i2c_req(i2c, req: B2C2_USB_I2C_REQUEST, |
325 | func: USB_FUNC_I2C_WRITE, chipaddr, addr, buf, buflen: 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 | buffer: urb->transfer_buffer + |
396 | urb->iso_frame_desc[i].offset, |
397 | buffer_length: 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(urb: fc_usb->iso_urb[i]); |
418 | usb_free_urb(urb: fc_usb->iso_urb[i]); |
419 | } |
420 | |
421 | usb_free_coherent(dev: fc_usb->udev, size: fc_usb->buffer_size, |
422 | addr: fc_usb->iso_buffer, dma: fc_usb->dma_addr); |
423 | |
424 | } |
425 | |
426 | static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb) |
427 | { |
428 | struct usb_host_interface *alt = fc_usb->uintf->cur_altsetting; |
429 | u16 frame_size; |
430 | int bufsize, i, j, ret; |
431 | int buffer_offset = 0; |
432 | |
433 | frame_size = usb_endpoint_maxp(epd: &alt->endpoint[0].desc); |
434 | bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO * frame_size; |
435 | |
436 | deb_ts("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n" , |
437 | B2C2_USB_NUM_ISO_URB, |
438 | B2C2_USB_FRAMES_PER_ISO, frame_size, bufsize); |
439 | |
440 | fc_usb->iso_buffer = usb_alloc_coherent(dev: fc_usb->udev, |
441 | size: bufsize, GFP_KERNEL, dma: &fc_usb->dma_addr); |
442 | if (fc_usb->iso_buffer == NULL) |
443 | return -ENOMEM; |
444 | |
445 | memset(fc_usb->iso_buffer, 0, bufsize); |
446 | fc_usb->buffer_size = bufsize; |
447 | |
448 | /* creating iso urbs */ |
449 | for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) { |
450 | fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO, |
451 | GFP_ATOMIC); |
452 | if (fc_usb->iso_urb[i] == NULL) { |
453 | ret = -ENOMEM; |
454 | goto urb_error; |
455 | } |
456 | } |
457 | |
458 | /* initialising and submitting iso urbs */ |
459 | for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) { |
460 | int frame_offset = 0; |
461 | struct urb *urb = fc_usb->iso_urb[i]; |
462 | deb_ts("initializing and submitting urb no. %d (buf_offset: %d).\n" , |
463 | i, buffer_offset); |
464 | |
465 | urb->dev = fc_usb->udev; |
466 | urb->context = fc_usb; |
467 | urb->complete = flexcop_usb_urb_complete; |
468 | urb->pipe = B2C2_USB_DATA_PIPE; |
469 | urb->transfer_flags = URB_ISO_ASAP; |
470 | urb->interval = 1; |
471 | urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO; |
472 | urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO; |
473 | urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset; |
474 | |
475 | buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO; |
476 | for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) { |
477 | deb_ts("urb no: %d, frame: %d, frame_offset: %d\n" , |
478 | i, j, frame_offset); |
479 | urb->iso_frame_desc[j].offset = frame_offset; |
480 | urb->iso_frame_desc[j].length = frame_size; |
481 | frame_offset += frame_size; |
482 | } |
483 | |
484 | if ((ret = usb_submit_urb(urb: fc_usb->iso_urb[i],GFP_ATOMIC))) { |
485 | err("submitting urb %d failed with %d." , i, ret); |
486 | goto urb_error; |
487 | } |
488 | deb_ts("submitted urb no. %d.\n" , i); |
489 | } |
490 | |
491 | /* SRAM */ |
492 | flexcop_sram_set_dest(fc_usb->fc_dev, FC_SRAM_DEST_MEDIA | |
493 | FC_SRAM_DEST_NET | FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI, |
494 | FC_SRAM_DEST_TARGET_WAN_USB); |
495 | flexcop_wan_set_speed(fc_usb->fc_dev, FC_WAN_SPEED_8MBITS); |
496 | flexcop_sram_ctrl(fc_usb->fc_dev, 1, 1, 1); |
497 | return 0; |
498 | |
499 | urb_error: |
500 | flexcop_usb_transfer_exit(fc_usb); |
501 | return ret; |
502 | } |
503 | |
504 | static int flexcop_usb_init(struct flexcop_usb *fc_usb) |
505 | { |
506 | struct usb_host_interface *alt; |
507 | int ret; |
508 | |
509 | /* use the alternate setting with the largest buffer */ |
510 | ret = usb_set_interface(dev: fc_usb->udev, ifnum: 0, alternate: 1); |
511 | if (ret) { |
512 | err("set interface failed." ); |
513 | return ret; |
514 | } |
515 | |
516 | alt = fc_usb->uintf->cur_altsetting; |
517 | |
518 | if (alt->desc.bNumEndpoints < 1) |
519 | return -ENODEV; |
520 | if (!usb_endpoint_is_isoc_in(epd: &alt->endpoint[0].desc)) |
521 | return -ENODEV; |
522 | |
523 | switch (fc_usb->udev->speed) { |
524 | case USB_SPEED_LOW: |
525 | err("cannot handle USB speed because it is too slow." ); |
526 | return -ENODEV; |
527 | break; |
528 | case USB_SPEED_FULL: |
529 | info("running at FULL speed." ); |
530 | break; |
531 | case USB_SPEED_HIGH: |
532 | info("running at HIGH speed." ); |
533 | break; |
534 | case USB_SPEED_UNKNOWN: |
535 | default: |
536 | err("cannot handle USB speed because it is unknown." ); |
537 | return -ENODEV; |
538 | } |
539 | usb_set_intfdata(intf: fc_usb->uintf, data: fc_usb); |
540 | return 0; |
541 | } |
542 | |
543 | static void flexcop_usb_exit(struct flexcop_usb *fc_usb) |
544 | { |
545 | usb_set_intfdata(intf: fc_usb->uintf, NULL); |
546 | } |
547 | |
548 | static int flexcop_usb_probe(struct usb_interface *intf, |
549 | const struct usb_device_id *id) |
550 | { |
551 | struct usb_device *udev = interface_to_usbdev(intf); |
552 | struct flexcop_usb *fc_usb = NULL; |
553 | struct flexcop_device *fc = NULL; |
554 | int ret; |
555 | |
556 | if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) { |
557 | err("out of memory\n" ); |
558 | return -ENOMEM; |
559 | } |
560 | |
561 | /* general flexcop init */ |
562 | fc_usb = fc->bus_specific; |
563 | fc_usb->fc_dev = fc; |
564 | mutex_init(&fc_usb->data_mutex); |
565 | |
566 | fc->read_ibi_reg = flexcop_usb_read_ibi_reg; |
567 | fc->write_ibi_reg = flexcop_usb_write_ibi_reg; |
568 | fc->i2c_request = flexcop_usb_i2c_request; |
569 | fc->get_mac_addr = flexcop_usb_get_mac_addr; |
570 | |
571 | fc->stream_control = flexcop_usb_stream_control; |
572 | |
573 | fc->pid_filtering = 1; |
574 | fc->bus_type = FC_USB; |
575 | |
576 | fc->dev = &udev->dev; |
577 | fc->owner = THIS_MODULE; |
578 | |
579 | /* bus specific part */ |
580 | fc_usb->udev = udev; |
581 | fc_usb->uintf = intf; |
582 | if ((ret = flexcop_usb_init(fc_usb)) != 0) |
583 | goto err_kfree; |
584 | |
585 | /* init flexcop */ |
586 | if ((ret = flexcop_device_initialize(fc)) != 0) |
587 | goto err_usb_exit; |
588 | |
589 | /* xfer init */ |
590 | if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0) |
591 | goto err_fc_exit; |
592 | |
593 | info("%s successfully initialized and connected." , DRIVER_NAME); |
594 | return 0; |
595 | |
596 | err_fc_exit: |
597 | flexcop_device_exit(fc); |
598 | err_usb_exit: |
599 | flexcop_usb_exit(fc_usb); |
600 | err_kfree: |
601 | flexcop_device_kfree(fc); |
602 | return ret; |
603 | } |
604 | |
605 | static void flexcop_usb_disconnect(struct usb_interface *intf) |
606 | { |
607 | struct flexcop_usb *fc_usb = usb_get_intfdata(intf); |
608 | flexcop_usb_transfer_exit(fc_usb); |
609 | flexcop_device_exit(fc_usb->fc_dev); |
610 | flexcop_usb_exit(fc_usb); |
611 | flexcop_device_kfree(fc_usb->fc_dev); |
612 | info("%s successfully deinitialized and disconnected." , DRIVER_NAME); |
613 | } |
614 | |
615 | static const struct usb_device_id flexcop_usb_table[] = { |
616 | { USB_DEVICE(0x0af7, 0x0101) }, |
617 | { } |
618 | }; |
619 | MODULE_DEVICE_TABLE (usb, flexcop_usb_table); |
620 | |
621 | /* usb specific object needed to register this driver with the usb subsystem */ |
622 | static struct usb_driver flexcop_usb_driver = { |
623 | .name = "b2c2_flexcop_usb" , |
624 | .probe = flexcop_usb_probe, |
625 | .disconnect = flexcop_usb_disconnect, |
626 | .id_table = flexcop_usb_table, |
627 | }; |
628 | |
629 | module_usb_driver(flexcop_usb_driver); |
630 | |
631 | MODULE_AUTHOR(DRIVER_AUTHOR); |
632 | MODULE_DESCRIPTION(DRIVER_NAME); |
633 | MODULE_LICENSE("GPL" ); |
634 | |