1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Driver for NXP PN533 NFC Chip - USB transport layer |
4 | * |
5 | * Copyright (C) 2011 Instituto Nokia de Tecnologia |
6 | * Copyright (C) 2012-2013 Tieto Poland |
7 | */ |
8 | |
9 | #include <linux/device.h> |
10 | #include <linux/kernel.h> |
11 | #include <linux/module.h> |
12 | #include <linux/slab.h> |
13 | #include <linux/usb.h> |
14 | #include <linux/nfc.h> |
15 | #include <linux/netdevice.h> |
16 | #include <net/nfc/nfc.h> |
17 | #include "pn533.h" |
18 | |
19 | #define VERSION "0.1" |
20 | |
21 | #define PN533_VENDOR_ID 0x4CC |
22 | #define PN533_PRODUCT_ID 0x2533 |
23 | |
24 | #define SCM_VENDOR_ID 0x4E6 |
25 | #define SCL3711_PRODUCT_ID 0x5591 |
26 | |
27 | #define SONY_VENDOR_ID 0x054c |
28 | #define PASORI_PRODUCT_ID 0x02e1 |
29 | |
30 | #define ACS_VENDOR_ID 0x072f |
31 | #define ACR122U_PRODUCT_ID 0x2200 |
32 | |
33 | static const struct usb_device_id pn533_usb_table[] = { |
34 | { USB_DEVICE(PN533_VENDOR_ID, PN533_PRODUCT_ID), |
35 | .driver_info = PN533_DEVICE_STD }, |
36 | { USB_DEVICE(SCM_VENDOR_ID, SCL3711_PRODUCT_ID), |
37 | .driver_info = PN533_DEVICE_STD }, |
38 | { USB_DEVICE(SONY_VENDOR_ID, PASORI_PRODUCT_ID), |
39 | .driver_info = PN533_DEVICE_PASORI }, |
40 | { USB_DEVICE(ACS_VENDOR_ID, ACR122U_PRODUCT_ID), |
41 | .driver_info = PN533_DEVICE_ACR122U }, |
42 | { } |
43 | }; |
44 | MODULE_DEVICE_TABLE(usb, pn533_usb_table); |
45 | |
46 | struct pn533_usb_phy { |
47 | struct usb_device *udev; |
48 | struct usb_interface *interface; |
49 | |
50 | struct urb *out_urb; |
51 | struct urb *in_urb; |
52 | |
53 | struct urb *ack_urb; |
54 | u8 *ack_buffer; |
55 | |
56 | struct pn533 *priv; |
57 | }; |
58 | |
59 | static void pn533_recv_response(struct urb *urb) |
60 | { |
61 | struct pn533_usb_phy *phy = urb->context; |
62 | struct sk_buff *skb = NULL; |
63 | |
64 | if (!urb->status) { |
65 | skb = alloc_skb(size: urb->actual_length, GFP_ATOMIC); |
66 | if (!skb) { |
67 | nfc_err(&phy->udev->dev, "failed to alloc memory\n" ); |
68 | } else { |
69 | skb_put_data(skb, data: urb->transfer_buffer, |
70 | len: urb->actual_length); |
71 | } |
72 | } |
73 | |
74 | pn533_recv_frame(dev: phy->priv, skb, status: urb->status); |
75 | } |
76 | |
77 | static int pn533_submit_urb_for_response(struct pn533_usb_phy *phy, gfp_t flags) |
78 | { |
79 | phy->in_urb->complete = pn533_recv_response; |
80 | |
81 | return usb_submit_urb(urb: phy->in_urb, mem_flags: flags); |
82 | } |
83 | |
84 | static void pn533_recv_ack(struct urb *urb) |
85 | { |
86 | struct pn533_usb_phy *phy = urb->context; |
87 | struct pn533 *priv = phy->priv; |
88 | struct pn533_cmd *cmd = priv->cmd; |
89 | struct pn533_std_frame *in_frame; |
90 | int rc; |
91 | |
92 | cmd->status = urb->status; |
93 | |
94 | switch (urb->status) { |
95 | case 0: |
96 | break; /* success */ |
97 | case -ECONNRESET: |
98 | case -ENOENT: |
99 | dev_dbg(&phy->udev->dev, |
100 | "The urb has been stopped (status %d)\n" , |
101 | urb->status); |
102 | goto sched_wq; |
103 | case -ESHUTDOWN: |
104 | default: |
105 | nfc_err(&phy->udev->dev, |
106 | "Urb failure (status %d)\n" , urb->status); |
107 | goto sched_wq; |
108 | } |
109 | |
110 | in_frame = phy->in_urb->transfer_buffer; |
111 | |
112 | if (!pn533_rx_frame_is_ack(frame: in_frame)) { |
113 | nfc_err(&phy->udev->dev, "Received an invalid ack\n" ); |
114 | cmd->status = -EIO; |
115 | goto sched_wq; |
116 | } |
117 | |
118 | rc = pn533_submit_urb_for_response(phy, GFP_ATOMIC); |
119 | if (rc) { |
120 | nfc_err(&phy->udev->dev, |
121 | "usb_submit_urb failed with result %d\n" , rc); |
122 | cmd->status = rc; |
123 | goto sched_wq; |
124 | } |
125 | |
126 | return; |
127 | |
128 | sched_wq: |
129 | queue_work(wq: priv->wq, work: &priv->cmd_complete_work); |
130 | } |
131 | |
132 | static int pn533_submit_urb_for_ack(struct pn533_usb_phy *phy, gfp_t flags) |
133 | { |
134 | phy->in_urb->complete = pn533_recv_ack; |
135 | |
136 | return usb_submit_urb(urb: phy->in_urb, mem_flags: flags); |
137 | } |
138 | |
139 | static int pn533_usb_send_ack(struct pn533 *dev, gfp_t flags) |
140 | { |
141 | struct pn533_usb_phy *phy = dev->phy; |
142 | static const u8 ack[6] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00}; |
143 | /* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */ |
144 | |
145 | if (!phy->ack_buffer) { |
146 | phy->ack_buffer = kmemdup(p: ack, size: sizeof(ack), gfp: flags); |
147 | if (!phy->ack_buffer) |
148 | return -ENOMEM; |
149 | } |
150 | |
151 | phy->ack_urb->transfer_buffer = phy->ack_buffer; |
152 | phy->ack_urb->transfer_buffer_length = sizeof(ack); |
153 | return usb_submit_urb(urb: phy->ack_urb, mem_flags: flags); |
154 | } |
155 | |
156 | struct pn533_out_arg { |
157 | struct pn533_usb_phy *phy; |
158 | struct completion done; |
159 | }; |
160 | |
161 | static int pn533_usb_send_frame(struct pn533 *dev, |
162 | struct sk_buff *out) |
163 | { |
164 | struct pn533_usb_phy *phy = dev->phy; |
165 | struct pn533_out_arg arg; |
166 | void *cntx; |
167 | int rc; |
168 | |
169 | if (phy->priv == NULL) |
170 | phy->priv = dev; |
171 | |
172 | phy->out_urb->transfer_buffer = out->data; |
173 | phy->out_urb->transfer_buffer_length = out->len; |
174 | |
175 | print_hex_dump_debug("PN533 TX: " , DUMP_PREFIX_NONE, 16, 1, |
176 | out->data, out->len, false); |
177 | |
178 | arg.phy = phy; |
179 | init_completion(x: &arg.done); |
180 | cntx = phy->out_urb->context; |
181 | phy->out_urb->context = &arg; |
182 | |
183 | rc = usb_submit_urb(urb: phy->out_urb, GFP_KERNEL); |
184 | if (rc) |
185 | return rc; |
186 | |
187 | wait_for_completion(&arg.done); |
188 | phy->out_urb->context = cntx; |
189 | |
190 | if (dev->protocol_type == PN533_PROTO_REQ_RESP) { |
191 | /* request for response for sent packet directly */ |
192 | rc = pn533_submit_urb_for_response(phy, GFP_KERNEL); |
193 | if (rc) |
194 | goto error; |
195 | } else if (dev->protocol_type == PN533_PROTO_REQ_ACK_RESP) { |
196 | /* request for ACK if that's the case */ |
197 | rc = pn533_submit_urb_for_ack(phy, GFP_KERNEL); |
198 | if (rc) |
199 | goto error; |
200 | } |
201 | |
202 | return 0; |
203 | |
204 | error: |
205 | usb_unlink_urb(urb: phy->out_urb); |
206 | return rc; |
207 | } |
208 | |
209 | static void pn533_usb_abort_cmd(struct pn533 *dev, gfp_t flags) |
210 | { |
211 | struct pn533_usb_phy *phy = dev->phy; |
212 | |
213 | /* ACR122U does not support any command which aborts last |
214 | * issued command i.e. as ACK for standard PN533. Additionally, |
215 | * it behaves stange, sending broken or incorrect responses, |
216 | * when we cancel urb before the chip will send response. |
217 | */ |
218 | if (dev->device_type == PN533_DEVICE_ACR122U) |
219 | return; |
220 | |
221 | /* An ack will cancel the last issued command */ |
222 | pn533_usb_send_ack(dev, flags); |
223 | |
224 | /* cancel the urb request */ |
225 | usb_kill_urb(urb: phy->in_urb); |
226 | } |
227 | |
228 | /* ACR122 specific structs and functions */ |
229 | |
230 | /* ACS ACR122 pn533 frame definitions */ |
231 | #define (sizeof(struct pn533_acr122_tx_frame) \ |
232 | + 2) |
233 | #define PN533_ACR122_TX_FRAME_TAIL_LEN 0 |
234 | #define (sizeof(struct pn533_acr122_rx_frame) \ |
235 | + 2) |
236 | #define PN533_ACR122_RX_FRAME_TAIL_LEN 2 |
237 | #define PN533_ACR122_FRAME_MAX_PAYLOAD_LEN PN533_STD_FRAME_MAX_PAYLOAD_LEN |
238 | |
239 | /* CCID messages types */ |
240 | #define PN533_ACR122_PC_TO_RDR_ICCPOWERON 0x62 |
241 | #define PN533_ACR122_PC_TO_RDR_ESCAPE 0x6B |
242 | |
243 | #define PN533_ACR122_RDR_TO_PC_ESCAPE 0x83 |
244 | |
245 | |
246 | struct pn533_acr122_ccid_hdr { |
247 | u8 type; |
248 | u32 datalen; |
249 | u8 slot; |
250 | u8 seq; |
251 | |
252 | /* |
253 | * 3 msg specific bytes or status, error and 1 specific |
254 | * byte for reposnse msg |
255 | */ |
256 | u8 params[3]; |
257 | u8 data[]; /* payload */ |
258 | } __packed; |
259 | |
260 | struct pn533_acr122_apdu_hdr { |
261 | u8 class; |
262 | u8 ins; |
263 | u8 p1; |
264 | u8 p2; |
265 | } __packed; |
266 | |
267 | struct pn533_acr122_tx_frame { |
268 | struct pn533_acr122_ccid_hdr ccid; |
269 | struct pn533_acr122_apdu_hdr apdu; |
270 | u8 datalen; |
271 | u8 data[]; /* pn533 frame: TFI ... */ |
272 | } __packed; |
273 | |
274 | struct pn533_acr122_rx_frame { |
275 | struct pn533_acr122_ccid_hdr ccid; |
276 | u8 data[]; /* pn533 frame : TFI ... */ |
277 | } __packed; |
278 | |
279 | static void pn533_acr122_tx_frame_init(void *_frame, u8 cmd_code) |
280 | { |
281 | struct pn533_acr122_tx_frame *frame = _frame; |
282 | |
283 | frame->ccid.type = PN533_ACR122_PC_TO_RDR_ESCAPE; |
284 | /* sizeof(apdu_hdr) + sizeof(datalen) */ |
285 | frame->ccid.datalen = sizeof(frame->apdu) + 1; |
286 | frame->ccid.slot = 0; |
287 | frame->ccid.seq = 0; |
288 | frame->ccid.params[0] = 0; |
289 | frame->ccid.params[1] = 0; |
290 | frame->ccid.params[2] = 0; |
291 | |
292 | frame->data[0] = PN533_STD_FRAME_DIR_OUT; |
293 | frame->data[1] = cmd_code; |
294 | frame->datalen = 2; /* data[0] + data[1] */ |
295 | |
296 | frame->apdu.class = 0xFF; |
297 | frame->apdu.ins = 0; |
298 | frame->apdu.p1 = 0; |
299 | frame->apdu.p2 = 0; |
300 | } |
301 | |
302 | static void pn533_acr122_tx_frame_finish(void *_frame) |
303 | { |
304 | struct pn533_acr122_tx_frame *frame = _frame; |
305 | |
306 | frame->ccid.datalen += frame->datalen; |
307 | } |
308 | |
309 | static void pn533_acr122_tx_update_payload_len(void *_frame, int len) |
310 | { |
311 | struct pn533_acr122_tx_frame *frame = _frame; |
312 | |
313 | frame->datalen += len; |
314 | } |
315 | |
316 | static bool pn533_acr122_is_rx_frame_valid(void *_frame, struct pn533 *dev) |
317 | { |
318 | struct pn533_acr122_rx_frame *frame = _frame; |
319 | |
320 | if (frame->ccid.type != 0x83) |
321 | return false; |
322 | |
323 | if (!frame->ccid.datalen) |
324 | return false; |
325 | |
326 | if (frame->data[frame->ccid.datalen - 2] == 0x63) |
327 | return false; |
328 | |
329 | return true; |
330 | } |
331 | |
332 | static int pn533_acr122_rx_frame_size(void *frame) |
333 | { |
334 | struct pn533_acr122_rx_frame *f = frame; |
335 | |
336 | /* f->ccid.datalen already includes tail length */ |
337 | return sizeof(struct pn533_acr122_rx_frame) + f->ccid.datalen; |
338 | } |
339 | |
340 | static u8 pn533_acr122_get_cmd_code(void *frame) |
341 | { |
342 | struct pn533_acr122_rx_frame *f = frame; |
343 | |
344 | return PN533_FRAME_CMD(f); |
345 | } |
346 | |
347 | static struct pn533_frame_ops pn533_acr122_frame_ops = { |
348 | .tx_frame_init = pn533_acr122_tx_frame_init, |
349 | .tx_frame_finish = pn533_acr122_tx_frame_finish, |
350 | .tx_update_payload_len = pn533_acr122_tx_update_payload_len, |
351 | .tx_header_len = PN533_ACR122_TX_FRAME_HEADER_LEN, |
352 | .tx_tail_len = PN533_ACR122_TX_FRAME_TAIL_LEN, |
353 | |
354 | .rx_is_frame_valid = pn533_acr122_is_rx_frame_valid, |
355 | .rx_header_len = PN533_ACR122_RX_FRAME_HEADER_LEN, |
356 | .rx_tail_len = PN533_ACR122_RX_FRAME_TAIL_LEN, |
357 | .rx_frame_size = pn533_acr122_rx_frame_size, |
358 | |
359 | .max_payload_len = PN533_ACR122_FRAME_MAX_PAYLOAD_LEN, |
360 | .get_cmd_code = pn533_acr122_get_cmd_code, |
361 | }; |
362 | |
363 | struct pn533_acr122_poweron_rdr_arg { |
364 | int rc; |
365 | struct completion done; |
366 | }; |
367 | |
368 | static void pn533_acr122_poweron_rdr_resp(struct urb *urb) |
369 | { |
370 | struct pn533_acr122_poweron_rdr_arg *arg = urb->context; |
371 | |
372 | print_hex_dump_debug("ACR122 RX: " , DUMP_PREFIX_NONE, 16, 1, |
373 | urb->transfer_buffer, urb->transfer_buffer_length, |
374 | false); |
375 | |
376 | arg->rc = urb->status; |
377 | complete(&arg->done); |
378 | } |
379 | |
380 | static int pn533_acr122_poweron_rdr(struct pn533_usb_phy *phy) |
381 | { |
382 | /* Power on th reader (CCID cmd) */ |
383 | u8 cmd[10] = {PN533_ACR122_PC_TO_RDR_ICCPOWERON, |
384 | 0, 0, 0, 0, 0, 0, 3, 0, 0}; |
385 | char *buffer; |
386 | int transferred; |
387 | int rc; |
388 | void *cntx; |
389 | struct pn533_acr122_poweron_rdr_arg arg; |
390 | |
391 | buffer = kmemdup(p: cmd, size: sizeof(cmd), GFP_KERNEL); |
392 | if (!buffer) |
393 | return -ENOMEM; |
394 | |
395 | init_completion(x: &arg.done); |
396 | cntx = phy->in_urb->context; /* backup context */ |
397 | |
398 | phy->in_urb->complete = pn533_acr122_poweron_rdr_resp; |
399 | phy->in_urb->context = &arg; |
400 | |
401 | print_hex_dump_debug("ACR122 TX: " , DUMP_PREFIX_NONE, 16, 1, |
402 | cmd, sizeof(cmd), false); |
403 | |
404 | rc = usb_bulk_msg(usb_dev: phy->udev, pipe: phy->out_urb->pipe, data: buffer, len: sizeof(cmd), |
405 | actual_length: &transferred, timeout: 5000); |
406 | kfree(objp: buffer); |
407 | if (rc || (transferred != sizeof(cmd))) { |
408 | nfc_err(&phy->udev->dev, |
409 | "Reader power on cmd error %d\n" , rc); |
410 | return rc; |
411 | } |
412 | |
413 | rc = usb_submit_urb(urb: phy->in_urb, GFP_KERNEL); |
414 | if (rc) { |
415 | nfc_err(&phy->udev->dev, |
416 | "Can't submit reader poweron cmd response %d\n" , rc); |
417 | return rc; |
418 | } |
419 | |
420 | wait_for_completion(&arg.done); |
421 | phy->in_urb->context = cntx; /* restore context */ |
422 | |
423 | return arg.rc; |
424 | } |
425 | |
426 | static void pn533_out_complete(struct urb *urb) |
427 | { |
428 | struct pn533_out_arg *arg = urb->context; |
429 | struct pn533_usb_phy *phy = arg->phy; |
430 | |
431 | switch (urb->status) { |
432 | case 0: |
433 | break; /* success */ |
434 | case -ECONNRESET: |
435 | case -ENOENT: |
436 | dev_dbg(&phy->udev->dev, |
437 | "The urb has been stopped (status %d)\n" , |
438 | urb->status); |
439 | break; |
440 | case -ESHUTDOWN: |
441 | default: |
442 | nfc_err(&phy->udev->dev, |
443 | "Urb failure (status %d)\n" , |
444 | urb->status); |
445 | } |
446 | |
447 | complete(&arg->done); |
448 | } |
449 | |
450 | static void pn533_ack_complete(struct urb *urb) |
451 | { |
452 | struct pn533_usb_phy *phy = urb->context; |
453 | |
454 | switch (urb->status) { |
455 | case 0: |
456 | break; /* success */ |
457 | case -ECONNRESET: |
458 | case -ENOENT: |
459 | dev_dbg(&phy->udev->dev, |
460 | "The urb has been stopped (status %d)\n" , |
461 | urb->status); |
462 | break; |
463 | case -ESHUTDOWN: |
464 | default: |
465 | nfc_err(&phy->udev->dev, |
466 | "Urb failure (status %d)\n" , |
467 | urb->status); |
468 | } |
469 | } |
470 | |
471 | static const struct pn533_phy_ops usb_phy_ops = { |
472 | .send_frame = pn533_usb_send_frame, |
473 | .send_ack = pn533_usb_send_ack, |
474 | .abort_cmd = pn533_usb_abort_cmd, |
475 | }; |
476 | |
477 | static int pn533_usb_probe(struct usb_interface *interface, |
478 | const struct usb_device_id *id) |
479 | { |
480 | struct pn533 *priv; |
481 | struct pn533_usb_phy *phy; |
482 | struct usb_host_interface *iface_desc; |
483 | struct usb_endpoint_descriptor *endpoint; |
484 | int in_endpoint = 0; |
485 | int out_endpoint = 0; |
486 | int rc = -ENOMEM; |
487 | int i; |
488 | u32 protocols; |
489 | enum pn533_protocol_type protocol_type = PN533_PROTO_REQ_ACK_RESP; |
490 | struct pn533_frame_ops *fops = NULL; |
491 | unsigned char *in_buf; |
492 | int in_buf_len = PN533_EXT_FRAME_HEADER_LEN + |
493 | PN533_STD_FRAME_MAX_PAYLOAD_LEN + |
494 | PN533_STD_FRAME_TAIL_LEN; |
495 | |
496 | phy = devm_kzalloc(dev: &interface->dev, size: sizeof(*phy), GFP_KERNEL); |
497 | if (!phy) |
498 | return -ENOMEM; |
499 | |
500 | in_buf = kzalloc(size: in_buf_len, GFP_KERNEL); |
501 | if (!in_buf) |
502 | return -ENOMEM; |
503 | |
504 | phy->udev = usb_get_dev(interface_to_usbdev(interface)); |
505 | phy->interface = interface; |
506 | |
507 | iface_desc = interface->cur_altsetting; |
508 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
509 | endpoint = &iface_desc->endpoint[i].desc; |
510 | |
511 | if (!in_endpoint && usb_endpoint_is_bulk_in(epd: endpoint)) |
512 | in_endpoint = endpoint->bEndpointAddress; |
513 | |
514 | if (!out_endpoint && usb_endpoint_is_bulk_out(epd: endpoint)) |
515 | out_endpoint = endpoint->bEndpointAddress; |
516 | } |
517 | |
518 | if (!in_endpoint || !out_endpoint) { |
519 | nfc_err(&interface->dev, |
520 | "Could not find bulk-in or bulk-out endpoint\n" ); |
521 | rc = -ENODEV; |
522 | goto error; |
523 | } |
524 | |
525 | phy->in_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
526 | phy->out_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
527 | phy->ack_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
528 | |
529 | if (!phy->in_urb || !phy->out_urb || !phy->ack_urb) |
530 | goto error; |
531 | |
532 | usb_fill_bulk_urb(urb: phy->in_urb, dev: phy->udev, |
533 | usb_rcvbulkpipe(phy->udev, in_endpoint), |
534 | transfer_buffer: in_buf, buffer_length: in_buf_len, NULL, context: phy); |
535 | |
536 | usb_fill_bulk_urb(urb: phy->out_urb, dev: phy->udev, |
537 | usb_sndbulkpipe(phy->udev, out_endpoint), |
538 | NULL, buffer_length: 0, complete_fn: pn533_out_complete, context: phy); |
539 | usb_fill_bulk_urb(urb: phy->ack_urb, dev: phy->udev, |
540 | usb_sndbulkpipe(phy->udev, out_endpoint), |
541 | NULL, buffer_length: 0, complete_fn: pn533_ack_complete, context: phy); |
542 | |
543 | switch (id->driver_info) { |
544 | case PN533_DEVICE_STD: |
545 | protocols = PN533_ALL_PROTOCOLS; |
546 | break; |
547 | |
548 | case PN533_DEVICE_PASORI: |
549 | protocols = PN533_NO_TYPE_B_PROTOCOLS; |
550 | break; |
551 | |
552 | case PN533_DEVICE_ACR122U: |
553 | protocols = PN533_NO_TYPE_B_PROTOCOLS; |
554 | fops = &pn533_acr122_frame_ops; |
555 | protocol_type = PN533_PROTO_REQ_RESP; |
556 | |
557 | rc = pn533_acr122_poweron_rdr(phy); |
558 | if (rc < 0) { |
559 | nfc_err(&interface->dev, |
560 | "Couldn't poweron the reader (error %d)\n" , rc); |
561 | goto error; |
562 | } |
563 | break; |
564 | |
565 | default: |
566 | nfc_err(&interface->dev, "Unknown device type %lu\n" , |
567 | id->driver_info); |
568 | rc = -EINVAL; |
569 | goto error; |
570 | } |
571 | |
572 | priv = pn53x_common_init(device_type: id->driver_info, protocol_type, |
573 | phy, phy_ops: &usb_phy_ops, fops, |
574 | dev: &phy->udev->dev); |
575 | |
576 | if (IS_ERR(ptr: priv)) { |
577 | rc = PTR_ERR(ptr: priv); |
578 | goto error; |
579 | } |
580 | |
581 | phy->priv = priv; |
582 | |
583 | rc = pn533_finalize_setup(dev: priv); |
584 | if (rc) |
585 | goto err_clean; |
586 | |
587 | usb_set_intfdata(intf: interface, data: phy); |
588 | rc = pn53x_register_nfc(priv, protocols, parent: &interface->dev); |
589 | if (rc) |
590 | goto err_clean; |
591 | |
592 | return 0; |
593 | |
594 | err_clean: |
595 | pn53x_common_clean(priv); |
596 | error: |
597 | usb_kill_urb(urb: phy->in_urb); |
598 | usb_kill_urb(urb: phy->out_urb); |
599 | usb_kill_urb(urb: phy->ack_urb); |
600 | |
601 | usb_free_urb(urb: phy->in_urb); |
602 | usb_free_urb(urb: phy->out_urb); |
603 | usb_free_urb(urb: phy->ack_urb); |
604 | usb_put_dev(dev: phy->udev); |
605 | kfree(objp: in_buf); |
606 | kfree(objp: phy->ack_buffer); |
607 | |
608 | return rc; |
609 | } |
610 | |
611 | static void pn533_usb_disconnect(struct usb_interface *interface) |
612 | { |
613 | struct pn533_usb_phy *phy = usb_get_intfdata(intf: interface); |
614 | |
615 | if (!phy) |
616 | return; |
617 | |
618 | pn53x_unregister_nfc(priv: phy->priv); |
619 | pn53x_common_clean(priv: phy->priv); |
620 | |
621 | usb_set_intfdata(intf: interface, NULL); |
622 | |
623 | usb_kill_urb(urb: phy->in_urb); |
624 | usb_kill_urb(urb: phy->out_urb); |
625 | usb_kill_urb(urb: phy->ack_urb); |
626 | |
627 | kfree(objp: phy->in_urb->transfer_buffer); |
628 | usb_free_urb(urb: phy->in_urb); |
629 | usb_free_urb(urb: phy->out_urb); |
630 | usb_free_urb(urb: phy->ack_urb); |
631 | kfree(objp: phy->ack_buffer); |
632 | |
633 | nfc_info(&interface->dev, "NXP PN533 NFC device disconnected\n" ); |
634 | } |
635 | |
636 | static struct usb_driver pn533_usb_driver = { |
637 | .name = "pn533_usb" , |
638 | .probe = pn533_usb_probe, |
639 | .disconnect = pn533_usb_disconnect, |
640 | .id_table = pn533_usb_table, |
641 | }; |
642 | |
643 | module_usb_driver(pn533_usb_driver); |
644 | |
645 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>" ); |
646 | MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>" ); |
647 | MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>" ); |
648 | MODULE_DESCRIPTION("PN533 USB driver ver " VERSION); |
649 | MODULE_VERSION(VERSION); |
650 | MODULE_LICENSE("GPL" ); |
651 | |