2 * Driver for NXP PN533 NFC Chip - core functions
4 * Copyright (C) 2011 Instituto Nokia de Tecnologia
5 * Copyright (C) 2012-2013 Tieto Poland
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include <linux/device.h>
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/slab.h>
25 #include <linux/nfc.h>
26 #include <linux/netdevice.h>
27 #include <net/nfc/nfc.h>
32 /* How much time we spend listening for initiators */
33 #define PN533_LISTEN_TIME 2
34 /* Delay between each poll frame (ms) */
35 #define PN533_POLL_INTERVAL 10
37 /* structs for pn533 commands */
39 /* PN533_CMD_GET_FIRMWARE_VERSION */
40 struct pn533_fw_version {
47 /* PN533_CMD_RF_CONFIGURATION */
48 #define PN533_CFGITEM_RF_FIELD 0x01
49 #define PN533_CFGITEM_TIMING 0x02
50 #define PN533_CFGITEM_MAX_RETRIES 0x05
51 #define PN533_CFGITEM_PASORI 0x82
53 #define PN533_CFGITEM_RF_FIELD_AUTO_RFCA 0x2
54 #define PN533_CFGITEM_RF_FIELD_ON 0x1
55 #define PN533_CFGITEM_RF_FIELD_OFF 0x0
57 #define PN533_CONFIG_TIMING_102 0xb
58 #define PN533_CONFIG_TIMING_204 0xc
59 #define PN533_CONFIG_TIMING_409 0xd
60 #define PN533_CONFIG_TIMING_819 0xe
62 #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00
63 #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF
65 struct pn533_config_max_retries {
68 u8 mx_rty_passive_act;
71 struct pn533_config_timing {
77 /* PN533_CMD_IN_LIST_PASSIVE_TARGET */
79 /* felica commands opcode */
80 #define PN533_FELICA_OPC_SENSF_REQ 0
81 #define PN533_FELICA_OPC_SENSF_RES 1
82 /* felica SENSF_REQ parameters */
83 #define PN533_FELICA_SENSF_SC_ALL 0xFFFF
84 #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0
85 #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1
86 #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2
88 /* type B initiator_data values */
89 #define PN533_TYPE_B_AFI_ALL_FAMILIES 0
90 #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0
91 #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1
93 union pn533_cmd_poll_initdata {
106 struct pn533_poll_modulations {
110 union pn533_cmd_poll_initdata initiator_data;
115 static const struct pn533_poll_modulations poll_mod[] = {
116 [PN533_POLL_MOD_106KBPS_A] = {
123 [PN533_POLL_MOD_212KBPS_FELICA] = {
127 .initiator_data.felica = {
128 .opcode = PN533_FELICA_OPC_SENSF_REQ,
129 .sc = PN533_FELICA_SENSF_SC_ALL,
130 .rc = PN533_FELICA_SENSF_RC_SYSTEM_CODE,
136 [PN533_POLL_MOD_424KBPS_FELICA] = {
140 .initiator_data.felica = {
141 .opcode = PN533_FELICA_OPC_SENSF_REQ,
142 .sc = PN533_FELICA_SENSF_SC_ALL,
143 .rc = PN533_FELICA_SENSF_RC_SYSTEM_CODE,
149 [PN533_POLL_MOD_106KBPS_JEWEL] = {
156 [PN533_POLL_MOD_847KBPS_B] = {
160 .initiator_data.type_b = {
161 .afi = PN533_TYPE_B_AFI_ALL_FAMILIES,
163 PN533_TYPE_B_POLL_METHOD_TIMESLOT,
168 [PN533_LISTEN_MOD] = {
173 /* PN533_CMD_IN_ATR */
175 struct pn533_cmd_activate_response {
187 struct pn533_cmd_jump_dep_response {
201 /* PN533_TG_INIT_AS_TARGET */
202 #define PN533_INIT_TARGET_PASSIVE 0x1
203 #define PN533_INIT_TARGET_DEP 0x2
205 #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3
206 #define PN533_INIT_TARGET_RESP_ACTIVE 0x1
207 #define PN533_INIT_TARGET_RESP_DEP 0x4
209 /* The rule: value(high byte) + value(low byte) + checksum = 0 */
210 static inline u8 pn533_ext_checksum(u16 value)
212 return ~(u8)(((value & 0xFF00) >> 8) + (u8)(value & 0xFF)) + 1;
215 /* The rule: value + checksum = 0 */
216 static inline u8 pn533_std_checksum(u8 value)
221 /* The rule: sum(data elements) + checksum = 0 */
222 static u8 pn533_std_data_checksum(u8 *data, int datalen)
227 for (i = 0; i < datalen; i++)
230 return pn533_std_checksum(sum);
233 static void pn533_std_tx_frame_init(void *_frame, u8 cmd_code)
235 struct pn533_std_frame *frame = _frame;
238 frame->start_frame = cpu_to_be16(PN533_STD_FRAME_SOF);
239 PN533_STD_FRAME_IDENTIFIER(frame) = PN533_STD_FRAME_DIR_OUT;
240 PN533_FRAME_CMD(frame) = cmd_code;
244 static void pn533_std_tx_frame_finish(void *_frame)
246 struct pn533_std_frame *frame = _frame;
248 frame->datalen_checksum = pn533_std_checksum(frame->datalen);
250 PN533_STD_FRAME_CHECKSUM(frame) =
251 pn533_std_data_checksum(frame->data, frame->datalen);
253 PN533_STD_FRAME_POSTAMBLE(frame) = 0;
256 static void pn533_std_tx_update_payload_len(void *_frame, int len)
258 struct pn533_std_frame *frame = _frame;
260 frame->datalen += len;
263 static bool pn533_std_rx_frame_is_valid(void *_frame, struct pn533 *dev)
266 struct pn533_std_frame *stdf = _frame;
268 if (stdf->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF))
271 if (likely(!PN533_STD_IS_EXTENDED(stdf))) {
272 /* Standard frame code */
273 dev->ops->rx_header_len = PN533_STD_FRAME_HEADER_LEN;
275 checksum = pn533_std_checksum(stdf->datalen);
276 if (checksum != stdf->datalen_checksum)
279 checksum = pn533_std_data_checksum(stdf->data, stdf->datalen);
280 if (checksum != PN533_STD_FRAME_CHECKSUM(stdf))
284 struct pn533_ext_frame *eif = _frame;
286 dev->ops->rx_header_len = PN533_EXT_FRAME_HEADER_LEN;
288 checksum = pn533_ext_checksum(be16_to_cpu(eif->datalen));
289 if (checksum != eif->datalen_checksum)
292 /* check data checksum */
293 checksum = pn533_std_data_checksum(eif->data,
294 be16_to_cpu(eif->datalen));
295 if (checksum != PN533_EXT_FRAME_CHECKSUM(eif))
302 bool pn533_rx_frame_is_ack(void *_frame)
304 struct pn533_std_frame *frame = _frame;
306 if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF))
309 if (frame->datalen != 0 || frame->datalen_checksum != 0xFF)
314 EXPORT_SYMBOL_GPL(pn533_rx_frame_is_ack);
316 static inline int pn533_std_rx_frame_size(void *frame)
318 struct pn533_std_frame *f = frame;
320 /* check for Extended Information frame */
321 if (PN533_STD_IS_EXTENDED(f)) {
322 struct pn533_ext_frame *eif = frame;
324 return sizeof(struct pn533_ext_frame)
325 + be16_to_cpu(eif->datalen) + PN533_STD_FRAME_TAIL_LEN;
328 return sizeof(struct pn533_std_frame) + f->datalen +
329 PN533_STD_FRAME_TAIL_LEN;
332 static u8 pn533_std_get_cmd_code(void *frame)
334 struct pn533_std_frame *f = frame;
335 struct pn533_ext_frame *eif = frame;
337 if (PN533_STD_IS_EXTENDED(f))
338 return PN533_FRAME_CMD(eif);
340 return PN533_FRAME_CMD(f);
343 bool pn533_rx_frame_is_cmd_response(struct pn533 *dev, void *frame)
345 return (dev->ops->get_cmd_code(frame) ==
346 PN533_CMD_RESPONSE(dev->cmd->code));
348 EXPORT_SYMBOL_GPL(pn533_rx_frame_is_cmd_response);
351 static struct pn533_frame_ops pn533_std_frame_ops = {
352 .tx_frame_init = pn533_std_tx_frame_init,
353 .tx_frame_finish = pn533_std_tx_frame_finish,
354 .tx_update_payload_len = pn533_std_tx_update_payload_len,
355 .tx_header_len = PN533_STD_FRAME_HEADER_LEN,
356 .tx_tail_len = PN533_STD_FRAME_TAIL_LEN,
358 .rx_is_frame_valid = pn533_std_rx_frame_is_valid,
359 .rx_frame_size = pn533_std_rx_frame_size,
360 .rx_header_len = PN533_STD_FRAME_HEADER_LEN,
361 .rx_tail_len = PN533_STD_FRAME_TAIL_LEN,
363 .max_payload_len = PN533_STD_FRAME_MAX_PAYLOAD_LEN,
364 .get_cmd_code = pn533_std_get_cmd_code,
367 static void pn533_build_cmd_frame(struct pn533 *dev, u8 cmd_code,
370 /* payload is already there, just update datalen */
371 int payload_len = skb->len;
372 struct pn533_frame_ops *ops = dev->ops;
375 skb_push(skb, ops->tx_header_len);
376 skb_put(skb, ops->tx_tail_len);
378 ops->tx_frame_init(skb->data, cmd_code);
379 ops->tx_update_payload_len(skb->data, payload_len);
380 ops->tx_frame_finish(skb->data);
383 static int pn533_send_async_complete(struct pn533 *dev)
385 struct pn533_cmd *cmd = dev->cmd;
386 int status = cmd->status;
388 struct sk_buff *req = cmd->req;
389 struct sk_buff *resp = cmd->resp;
396 rc = cmd->complete_cb(dev, cmd->complete_cb_context,
402 skb_pull(resp, dev->ops->rx_header_len);
403 skb_trim(resp, resp->len - dev->ops->rx_tail_len);
405 rc = cmd->complete_cb(dev, cmd->complete_cb_context, resp);
413 static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
415 pn533_send_async_complete_t complete_cb,
416 void *complete_cb_context)
418 struct pn533_cmd *cmd;
421 dev_dbg(dev->dev, "Sending command 0x%x\n", cmd_code);
423 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
427 cmd->code = cmd_code;
429 cmd->complete_cb = complete_cb;
430 cmd->complete_cb_context = complete_cb_context;
432 pn533_build_cmd_frame(dev, cmd_code, req);
434 mutex_lock(&dev->cmd_lock);
436 if (!dev->cmd_pending) {
437 rc = dev->phy_ops->send_frame(dev, req);
441 dev->cmd_pending = 1;
446 dev_dbg(dev->dev, "%s Queueing command 0x%x\n",
449 INIT_LIST_HEAD(&cmd->queue);
450 list_add_tail(&cmd->queue, &dev->cmd_queue);
457 mutex_unlock(&dev->cmd_lock);
461 static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code,
463 pn533_send_async_complete_t complete_cb,
464 void *complete_cb_context)
468 rc = __pn533_send_async(dev, cmd_code, req, complete_cb,
469 complete_cb_context);
474 static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code,
476 pn533_send_async_complete_t complete_cb,
477 void *complete_cb_context)
481 rc = __pn533_send_async(dev, cmd_code, req, complete_cb,
482 complete_cb_context);
488 * pn533_send_cmd_direct_async
490 * The function sends a piority cmd directly to the chip omiting the cmd
491 * queue. It's intended to be used by chaining mechanism of received responses
492 * where the host has to request every single chunk of data before scheduling
493 * next cmd from the queue.
495 static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code,
497 pn533_send_async_complete_t complete_cb,
498 void *complete_cb_context)
500 struct pn533_cmd *cmd;
503 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
507 cmd->code = cmd_code;
509 cmd->complete_cb = complete_cb;
510 cmd->complete_cb_context = complete_cb_context;
512 pn533_build_cmd_frame(dev, cmd_code, req);
514 rc = dev->phy_ops->send_frame(dev, req);
523 static void pn533_wq_cmd_complete(struct work_struct *work)
525 struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work);
528 rc = pn533_send_async_complete(dev);
529 if (rc != -EINPROGRESS)
530 queue_work(dev->wq, &dev->cmd_work);
533 static void pn533_wq_cmd(struct work_struct *work)
535 struct pn533 *dev = container_of(work, struct pn533, cmd_work);
536 struct pn533_cmd *cmd;
539 mutex_lock(&dev->cmd_lock);
541 if (list_empty(&dev->cmd_queue)) {
542 dev->cmd_pending = 0;
543 mutex_unlock(&dev->cmd_lock);
547 cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue);
549 list_del(&cmd->queue);
551 mutex_unlock(&dev->cmd_lock);
553 rc = dev->phy_ops->send_frame(dev, cmd->req);
555 dev_kfree_skb(cmd->req);
563 struct pn533_sync_cmd_response {
564 struct sk_buff *resp;
565 struct completion done;
568 static int pn533_send_sync_complete(struct pn533 *dev, void *_arg,
569 struct sk_buff *resp)
571 struct pn533_sync_cmd_response *arg = _arg;
574 complete(&arg->done);
579 /* pn533_send_cmd_sync
581 * Please note the req parameter is freed inside the function to
582 * limit a number of return value interpretations by the caller.
584 * 1. negative in case of error during TX path -> req should be freed
586 * 2. negative in case of error during RX path -> req should not be freed
587 * as it's been already freed at the beginning of RX path by
590 * 3. valid pointer in case of succesfult RX path
592 * A caller has to check a return value with IS_ERR macro. If the test pass,
593 * the returned pointer is valid.
596 static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code,
600 struct pn533_sync_cmd_response arg;
602 init_completion(&arg.done);
604 rc = pn533_send_cmd_async(dev, cmd_code, req,
605 pn533_send_sync_complete, &arg);
611 wait_for_completion(&arg.done);
616 static struct sk_buff *pn533_alloc_skb(struct pn533 *dev, unsigned int size)
620 skb = alloc_skb(dev->ops->tx_header_len +
622 dev->ops->tx_tail_len, GFP_KERNEL);
625 skb_reserve(skb, dev->ops->tx_header_len);
630 struct pn533_target_type_a {
638 #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6))
639 #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0))
640 #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8))
642 #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00
643 #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C
645 #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
646 #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2)
648 #define PN533_TYPE_A_SEL_PROT_MIFARE 0
649 #define PN533_TYPE_A_SEL_PROT_ISO14443 1
650 #define PN533_TYPE_A_SEL_PROT_DEP 2
651 #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3
653 static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a,
659 if (target_data_len < sizeof(struct pn533_target_type_a))
663 * The length check of nfcid[] and ats[] are not being performed because
664 * the values are not being used
667 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
668 ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res);
669 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res);
671 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
672 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
673 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
674 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
677 /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */
678 if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0)
681 if (type_a->nfcid_len > NFC_NFCID1_MAXSIZE)
687 static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data,
690 struct pn533_target_type_a *tgt_type_a;
692 tgt_type_a = (struct pn533_target_type_a *)tgt_data;
694 if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len))
697 switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) {
698 case PN533_TYPE_A_SEL_PROT_MIFARE:
699 nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK;
701 case PN533_TYPE_A_SEL_PROT_ISO14443:
702 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK;
704 case PN533_TYPE_A_SEL_PROT_DEP:
705 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
707 case PN533_TYPE_A_SEL_PROT_ISO14443_DEP:
708 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK |
709 NFC_PROTO_NFC_DEP_MASK;
713 nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res);
714 nfc_tgt->sel_res = tgt_type_a->sel_res;
715 nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len;
716 memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len);
721 struct pn533_target_felica {
724 u8 nfcid2[NFC_NFCID2_MAXSIZE];
730 #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01
731 #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE
733 static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica,
736 if (target_data_len < sizeof(struct pn533_target_felica))
739 if (felica->opcode != PN533_FELICA_OPC_SENSF_RES)
745 static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data,
748 struct pn533_target_felica *tgt_felica;
750 tgt_felica = (struct pn533_target_felica *)tgt_data;
752 if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len))
755 if ((tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1) &&
756 (tgt_felica->nfcid2[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2))
757 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
759 nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK;
761 memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9);
762 nfc_tgt->sensf_res_len = 9;
764 memcpy(nfc_tgt->nfcid2, tgt_felica->nfcid2, NFC_NFCID2_MAXSIZE);
765 nfc_tgt->nfcid2_len = NFC_NFCID2_MAXSIZE;
770 struct pn533_target_jewel {
775 static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel,
781 if (target_data_len < sizeof(struct pn533_target_jewel))
784 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
785 ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res);
786 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res);
788 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
789 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
790 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
791 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
797 static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data,
800 struct pn533_target_jewel *tgt_jewel;
802 tgt_jewel = (struct pn533_target_jewel *)tgt_data;
804 if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len))
807 nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK;
808 nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res);
809 nfc_tgt->nfcid1_len = 4;
810 memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len);
815 struct pn533_type_b_prot_info {
821 #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4)
822 #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0)
823 #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8
825 struct pn533_type_b_sens_res {
829 struct pn533_type_b_prot_info prot_info;
832 #define PN533_TYPE_B_OPC_SENSB_RES 0x50
834 struct pn533_target_type_b {
835 struct pn533_type_b_sens_res sensb_res;
840 static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b,
843 if (target_data_len < sizeof(struct pn533_target_type_b))
846 if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES)
849 if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) &
850 PN533_TYPE_B_PROT_TYPE_RFU_MASK)
856 static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data,
859 struct pn533_target_type_b *tgt_type_b;
861 tgt_type_b = (struct pn533_target_type_b *)tgt_data;
863 if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len))
866 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
871 static void pn533_poll_reset_mod_list(struct pn533 *dev);
872 static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata,
875 struct nfc_target nfc_tgt;
878 dev_dbg(dev->dev, "%s: modulation=%d\n",
879 __func__, dev->poll_mod_curr);
884 memset(&nfc_tgt, 0, sizeof(struct nfc_target));
886 switch (dev->poll_mod_curr) {
887 case PN533_POLL_MOD_106KBPS_A:
888 rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len);
890 case PN533_POLL_MOD_212KBPS_FELICA:
891 case PN533_POLL_MOD_424KBPS_FELICA:
892 rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len);
894 case PN533_POLL_MOD_106KBPS_JEWEL:
895 rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len);
897 case PN533_POLL_MOD_847KBPS_B:
898 rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len);
902 "Unknown current poll modulation\n");
909 if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) {
911 "The Tg found doesn't have the desired protocol\n");
916 "Target found - supported protocols: 0x%x\n",
917 nfc_tgt.supported_protocols);
919 dev->tgt_available_prots = nfc_tgt.supported_protocols;
921 pn533_poll_reset_mod_list(dev);
922 nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1);
927 static inline void pn533_poll_next_mod(struct pn533 *dev)
929 dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count;
932 static void pn533_poll_reset_mod_list(struct pn533 *dev)
934 dev->poll_mod_count = 0;
937 static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index)
939 dev->poll_mod_active[dev->poll_mod_count] =
940 (struct pn533_poll_modulations *)&poll_mod[mod_index];
941 dev->poll_mod_count++;
944 static void pn533_poll_create_mod_list(struct pn533 *dev,
945 u32 im_protocols, u32 tm_protocols)
947 pn533_poll_reset_mod_list(dev);
949 if ((im_protocols & NFC_PROTO_MIFARE_MASK) ||
950 (im_protocols & NFC_PROTO_ISO14443_MASK) ||
951 (im_protocols & NFC_PROTO_NFC_DEP_MASK))
952 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A);
954 if (im_protocols & NFC_PROTO_FELICA_MASK ||
955 im_protocols & NFC_PROTO_NFC_DEP_MASK) {
956 pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA);
957 pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA);
960 if (im_protocols & NFC_PROTO_JEWEL_MASK)
961 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL);
963 if (im_protocols & NFC_PROTO_ISO14443_B_MASK)
964 pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B);
967 pn533_poll_add_mod(dev, PN533_LISTEN_MOD);
970 static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp)
972 u8 nbtg, tg, *tgdata;
975 /* Toggle the DEP polling */
976 if (dev->poll_protocols & NFC_PROTO_NFC_DEP_MASK)
979 nbtg = resp->data[0];
981 tgdata = &resp->data[2];
982 tgdata_len = resp->len - 2; /* nbtg + tg */
985 rc = pn533_target_found(dev, tg, tgdata, tgdata_len);
987 /* We must stop the poll after a valid target found */
995 static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev)
998 u8 *felica, *nfcid3, *gb;
1000 u8 *gbytes = dev->gb;
1001 size_t gbytes_len = dev->gb_len;
1003 u8 felica_params[18] = {0x1, 0xfe, /* DEP */
1004 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */
1005 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1006 0xff, 0xff}; /* System code */
1008 u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */
1010 0x40}; /* SEL_RES for DEP */
1012 unsigned int skb_len = 36 + /*
1013 * mode (1), mifare (6),
1014 * felica (18), nfcid3 (10), gb_len (1)
1019 skb = pn533_alloc_skb(dev, skb_len);
1023 /* DEP support only */
1024 *skb_put(skb, 1) = PN533_INIT_TARGET_DEP;
1027 memcpy(skb_put(skb, 6), mifare_params, 6);
1030 felica = skb_put(skb, 18);
1031 memcpy(felica, felica_params, 18);
1032 get_random_bytes(felica + 2, 6);
1035 nfcid3 = skb_put(skb, 10);
1036 memset(nfcid3, 0, 10);
1037 memcpy(nfcid3, felica, 8);
1040 *skb_put(skb, 1) = gbytes_len;
1042 gb = skb_put(skb, gbytes_len);
1043 memcpy(gb, gbytes, gbytes_len);
1046 *skb_put(skb, 1) = 0;
1051 static void pn533_wq_tm_mi_recv(struct work_struct *work);
1052 static struct sk_buff *pn533_build_response(struct pn533 *dev);
1054 static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg,
1055 struct sk_buff *resp)
1057 struct sk_buff *skb;
1061 dev_dbg(dev->dev, "%s\n", __func__);
1064 skb_queue_purge(&dev->resp_q);
1065 return PTR_ERR(resp);
1068 status = resp->data[0];
1070 ret = status & PN533_CMD_RET_MASK;
1071 mi = status & PN533_CMD_MI_MASK;
1073 skb_pull(resp, sizeof(status));
1075 if (ret != PN533_CMD_RET_SUCCESS) {
1080 skb_queue_tail(&dev->resp_q, resp);
1083 queue_work(dev->wq, &dev->mi_tm_rx_work);
1084 return -EINPROGRESS;
1087 skb = pn533_build_response(dev);
1093 return nfc_tm_data_received(dev->nfc_dev, skb);
1096 nfc_tm_deactivated(dev->nfc_dev);
1098 skb_queue_purge(&dev->resp_q);
1099 dev_kfree_skb(resp);
1104 static void pn533_wq_tm_mi_recv(struct work_struct *work)
1106 struct pn533 *dev = container_of(work, struct pn533, mi_tm_rx_work);
1107 struct sk_buff *skb;
1110 dev_dbg(dev->dev, "%s\n", __func__);
1112 skb = pn533_alloc_skb(dev, 0);
1116 rc = pn533_send_cmd_direct_async(dev,
1117 PN533_CMD_TG_GET_DATA,
1119 pn533_tm_get_data_complete,
1126 static int pn533_tm_send_complete(struct pn533 *dev, void *arg,
1127 struct sk_buff *resp);
1128 static void pn533_wq_tm_mi_send(struct work_struct *work)
1130 struct pn533 *dev = container_of(work, struct pn533, mi_tm_tx_work);
1131 struct sk_buff *skb;
1134 dev_dbg(dev->dev, "%s\n", __func__);
1136 /* Grab the first skb in the queue */
1137 skb = skb_dequeue(&dev->fragment_skb);
1138 if (skb == NULL) { /* No more data */
1139 /* Reset the queue for future use */
1140 skb_queue_head_init(&dev->fragment_skb);
1144 /* last entry - remove MI bit */
1145 if (skb_queue_len(&dev->fragment_skb) == 0) {
1146 rc = pn533_send_cmd_direct_async(dev, PN533_CMD_TG_SET_DATA,
1147 skb, pn533_tm_send_complete, NULL);
1149 rc = pn533_send_cmd_direct_async(dev,
1150 PN533_CMD_TG_SET_META_DATA,
1151 skb, pn533_tm_send_complete, NULL);
1153 if (rc == 0) /* success */
1157 "Error %d when trying to perform set meta data_exchange", rc);
1162 dev->phy_ops->send_ack(dev, GFP_KERNEL);
1163 queue_work(dev->wq, &dev->cmd_work);
1166 static void pn533_wq_tg_get_data(struct work_struct *work)
1168 struct pn533 *dev = container_of(work, struct pn533, tg_work);
1169 struct sk_buff *skb;
1172 dev_dbg(dev->dev, "%s\n", __func__);
1174 skb = pn533_alloc_skb(dev, 0);
1178 rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb,
1179 pn533_tm_get_data_complete, NULL);
1185 #define ATR_REQ_GB_OFFSET 17
1186 static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp)
1188 u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb;
1192 dev_dbg(dev->dev, "%s\n", __func__);
1194 if (resp->len < ATR_REQ_GB_OFFSET + 1)
1197 mode = resp->data[0];
1198 cmd = &resp->data[1];
1200 dev_dbg(dev->dev, "Target mode 0x%x len %d\n",
1203 if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) ==
1204 PN533_INIT_TARGET_RESP_ACTIVE)
1205 comm_mode = NFC_COMM_ACTIVE;
1207 if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */
1210 gb = cmd + ATR_REQ_GB_OFFSET;
1211 gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1);
1213 rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK,
1214 comm_mode, gb, gb_len);
1217 "Error when signaling target activation\n");
1222 queue_work(dev->wq, &dev->tg_work);
1227 static void pn533_listen_mode_timer(unsigned long data)
1229 struct pn533 *dev = (struct pn533 *)data;
1231 dev_dbg(dev->dev, "Listen mode timeout\n");
1233 dev->cancel_listen = 1;
1235 pn533_poll_next_mod(dev);
1237 queue_delayed_work(dev->wq, &dev->poll_work,
1238 msecs_to_jiffies(PN533_POLL_INTERVAL));
1241 static int pn533_rf_complete(struct pn533 *dev, void *arg,
1242 struct sk_buff *resp)
1246 dev_dbg(dev->dev, "%s\n", __func__);
1251 nfc_err(dev->dev, "RF setting error %d\n", rc);
1256 queue_delayed_work(dev->wq, &dev->poll_work,
1257 msecs_to_jiffies(PN533_POLL_INTERVAL));
1259 dev_kfree_skb(resp);
1263 static void pn533_wq_rf(struct work_struct *work)
1265 struct pn533 *dev = container_of(work, struct pn533, rf_work);
1266 struct sk_buff *skb;
1269 dev_dbg(dev->dev, "%s\n", __func__);
1271 skb = pn533_alloc_skb(dev, 2);
1275 *skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD;
1276 *skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD_AUTO_RFCA;
1278 rc = pn533_send_cmd_async(dev, PN533_CMD_RF_CONFIGURATION, skb,
1279 pn533_rf_complete, NULL);
1282 nfc_err(dev->dev, "RF setting error %d\n", rc);
1286 static int pn533_poll_dep_complete(struct pn533 *dev, void *arg,
1287 struct sk_buff *resp)
1289 struct pn533_cmd_jump_dep_response *rsp;
1290 struct nfc_target nfc_target;
1295 return PTR_ERR(resp);
1297 rsp = (struct pn533_cmd_jump_dep_response *)resp->data;
1299 rc = rsp->status & PN533_CMD_RET_MASK;
1300 if (rc != PN533_CMD_RET_SUCCESS) {
1301 /* Not target found, turn radio off */
1302 queue_work(dev->wq, &dev->rf_work);
1304 dev_kfree_skb(resp);
1308 dev_dbg(dev->dev, "Creating new target");
1310 nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1311 nfc_target.nfcid1_len = 10;
1312 memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len);
1313 rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1);
1317 dev->tgt_available_prots = 0;
1318 dev->tgt_active_prot = NFC_PROTO_NFC_DEP;
1320 /* ATR_RES general bytes are located at offset 17 */
1321 target_gt_len = resp->len - 17;
1322 rc = nfc_set_remote_general_bytes(dev->nfc_dev,
1323 rsp->gt, target_gt_len);
1325 rc = nfc_dep_link_is_up(dev->nfc_dev,
1326 dev->nfc_dev->targets[0].idx,
1327 0, NFC_RF_INITIATOR);
1330 pn533_poll_reset_mod_list(dev);
1333 dev_kfree_skb(resp);
1337 #define PASSIVE_DATA_LEN 5
1338 static int pn533_poll_dep(struct nfc_dev *nfc_dev)
1340 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1341 struct sk_buff *skb;
1343 u8 *next, nfcid3[NFC_NFCID3_MAXSIZE];
1344 u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
1346 dev_dbg(dev->dev, "%s", __func__);
1349 dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len);
1351 if (!dev->gb || !dev->gb_len) {
1353 queue_work(dev->wq, &dev->rf_work);
1357 skb_len = 3 + dev->gb_len; /* ActPass + BR + Next */
1358 skb_len += PASSIVE_DATA_LEN;
1361 skb_len += NFC_NFCID3_MAXSIZE;
1364 get_random_bytes(nfcid3 + 2, 6);
1366 skb = pn533_alloc_skb(dev, skb_len);
1370 *skb_put(skb, 1) = 0x01; /* Active */
1371 *skb_put(skb, 1) = 0x02; /* 424 kbps */
1373 next = skb_put(skb, 1); /* Next */
1376 /* Copy passive data */
1377 memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data, PASSIVE_DATA_LEN);
1380 /* Copy NFCID3 (which is NFCID2 from SENSF_RES) */
1381 memcpy(skb_put(skb, NFC_NFCID3_MAXSIZE), nfcid3,
1382 NFC_NFCID3_MAXSIZE);
1385 memcpy(skb_put(skb, dev->gb_len), dev->gb, dev->gb_len);
1386 *next |= 4; /* We have some Gi */
1388 rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb,
1389 pn533_poll_dep_complete, NULL);
1397 static int pn533_poll_complete(struct pn533 *dev, void *arg,
1398 struct sk_buff *resp)
1400 struct pn533_poll_modulations *cur_mod;
1403 dev_dbg(dev->dev, "%s\n", __func__);
1408 nfc_err(dev->dev, "%s Poll complete error %d\n",
1411 if (rc == -ENOENT) {
1412 if (dev->poll_mod_count != 0)
1415 } else if (rc < 0) {
1417 "Error %d when running poll\n", rc);
1422 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1424 if (cur_mod->len == 0) { /* Target mode */
1425 del_timer(&dev->listen_timer);
1426 rc = pn533_init_target_complete(dev, resp);
1430 /* Initiator mode */
1431 rc = pn533_start_poll_complete(dev, resp);
1435 if (!dev->poll_mod_count) {
1436 dev_dbg(dev->dev, "Polling has been stopped\n");
1440 pn533_poll_next_mod(dev);
1441 /* Not target found, turn radio off */
1442 queue_work(dev->wq, &dev->rf_work);
1445 dev_kfree_skb(resp);
1449 nfc_err(dev->dev, "Polling operation has been stopped\n");
1451 pn533_poll_reset_mod_list(dev);
1452 dev->poll_protocols = 0;
1456 static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533 *dev,
1457 struct pn533_poll_modulations *mod)
1459 struct sk_buff *skb;
1461 skb = pn533_alloc_skb(dev, mod->len);
1465 memcpy(skb_put(skb, mod->len), &mod->data, mod->len);
1470 static int pn533_send_poll_frame(struct pn533 *dev)
1472 struct pn533_poll_modulations *mod;
1473 struct sk_buff *skb;
1477 mod = dev->poll_mod_active[dev->poll_mod_curr];
1479 dev_dbg(dev->dev, "%s mod len %d\n",
1480 __func__, mod->len);
1482 if ((dev->poll_protocols & NFC_PROTO_NFC_DEP_MASK) && dev->poll_dep) {
1484 return pn533_poll_dep(dev->nfc_dev);
1487 if (mod->len == 0) { /* Listen mode */
1488 cmd_code = PN533_CMD_TG_INIT_AS_TARGET;
1489 skb = pn533_alloc_poll_tg_frame(dev);
1490 } else { /* Polling mode */
1491 cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET;
1492 skb = pn533_alloc_poll_in_frame(dev, mod);
1496 nfc_err(dev->dev, "Failed to allocate skb\n");
1500 rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete,
1504 nfc_err(dev->dev, "Polling loop error %d\n", rc);
1510 static void pn533_wq_poll(struct work_struct *work)
1512 struct pn533 *dev = container_of(work, struct pn533, poll_work.work);
1513 struct pn533_poll_modulations *cur_mod;
1516 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1519 "%s cancel_listen %d modulation len %d\n",
1520 __func__, dev->cancel_listen, cur_mod->len);
1522 if (dev->cancel_listen == 1) {
1523 dev->cancel_listen = 0;
1524 dev->phy_ops->abort_cmd(dev, GFP_ATOMIC);
1527 rc = pn533_send_poll_frame(dev);
1531 if (cur_mod->len == 0 && dev->poll_mod_count > 1)
1532 mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ);
1535 static int pn533_start_poll(struct nfc_dev *nfc_dev,
1536 u32 im_protocols, u32 tm_protocols)
1538 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1539 struct pn533_poll_modulations *cur_mod;
1544 "%s: im protocols 0x%x tm protocols 0x%x\n",
1545 __func__, im_protocols, tm_protocols);
1547 if (dev->tgt_active_prot) {
1549 "Cannot poll with a target already activated\n");
1553 if (dev->tgt_mode) {
1555 "Cannot poll while already being activated\n");
1560 dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len);
1561 if (dev->gb == NULL)
1565 pn533_poll_create_mod_list(dev, im_protocols, tm_protocols);
1566 dev->poll_protocols = im_protocols;
1567 dev->listen_protocols = tm_protocols;
1569 /* Do not always start polling from the same modulation */
1570 get_random_bytes(&rand_mod, sizeof(rand_mod));
1571 rand_mod %= dev->poll_mod_count;
1572 dev->poll_mod_curr = rand_mod;
1574 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1576 rc = pn533_send_poll_frame(dev);
1578 /* Start listen timer */
1579 if (!rc && cur_mod->len == 0 && dev->poll_mod_count > 1)
1580 mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ);
1585 static void pn533_stop_poll(struct nfc_dev *nfc_dev)
1587 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1589 del_timer(&dev->listen_timer);
1591 if (!dev->poll_mod_count) {
1593 "Polling operation was not running\n");
1597 dev->phy_ops->abort_cmd(dev, GFP_KERNEL);
1598 flush_delayed_work(&dev->poll_work);
1599 pn533_poll_reset_mod_list(dev);
1602 static int pn533_activate_target_nfcdep(struct pn533 *dev)
1604 struct pn533_cmd_activate_response *rsp;
1607 struct sk_buff *skb;
1608 struct sk_buff *resp;
1610 dev_dbg(dev->dev, "%s\n", __func__);
1612 skb = pn533_alloc_skb(dev, sizeof(u8) * 2); /*TG + Next*/
1616 *skb_put(skb, sizeof(u8)) = 1; /* TG */
1617 *skb_put(skb, sizeof(u8)) = 0; /* Next */
1619 resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb);
1621 return PTR_ERR(resp);
1623 rsp = (struct pn533_cmd_activate_response *)resp->data;
1624 rc = rsp->status & PN533_CMD_RET_MASK;
1625 if (rc != PN533_CMD_RET_SUCCESS) {
1627 "Target activation failed (error 0x%x)\n", rc);
1628 dev_kfree_skb(resp);
1632 /* ATR_RES general bytes are located at offset 16 */
1633 gt_len = resp->len - 16;
1634 rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len);
1636 dev_kfree_skb(resp);
1640 static int pn533_activate_target(struct nfc_dev *nfc_dev,
1641 struct nfc_target *target, u32 protocol)
1643 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1646 dev_dbg(dev->dev, "%s: protocol=%u\n", __func__, protocol);
1648 if (dev->poll_mod_count) {
1650 "Cannot activate while polling\n");
1654 if (dev->tgt_active_prot) {
1656 "There is already an active target\n");
1660 if (!dev->tgt_available_prots) {
1662 "There is no available target to activate\n");
1666 if (!(dev->tgt_available_prots & (1 << protocol))) {
1668 "Target doesn't support requested proto %u\n",
1673 if (protocol == NFC_PROTO_NFC_DEP) {
1674 rc = pn533_activate_target_nfcdep(dev);
1677 "Activating target with DEP failed %d\n", rc);
1682 dev->tgt_active_prot = protocol;
1683 dev->tgt_available_prots = 0;
1688 static int pn533_deactivate_target_complete(struct pn533 *dev, void *arg,
1689 struct sk_buff *resp)
1693 dev_dbg(dev->dev, "%s\n", __func__);
1698 nfc_err(dev->dev, "Target release error %d\n", rc);
1703 rc = resp->data[0] & PN533_CMD_RET_MASK;
1704 if (rc != PN533_CMD_RET_SUCCESS)
1706 "Error 0x%x when releasing the target\n", rc);
1708 dev_kfree_skb(resp);
1712 static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
1713 struct nfc_target *target, u8 mode)
1715 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1716 struct sk_buff *skb;
1719 dev_dbg(dev->dev, "%s\n", __func__);
1721 if (!dev->tgt_active_prot) {
1722 nfc_err(dev->dev, "There is no active target\n");
1726 dev->tgt_active_prot = 0;
1727 skb_queue_purge(&dev->resp_q);
1729 skb = pn533_alloc_skb(dev, sizeof(u8));
1733 *skb_put(skb, 1) = 1; /* TG*/
1735 rc = pn533_send_cmd_async(dev, PN533_CMD_IN_RELEASE, skb,
1736 pn533_deactivate_target_complete, NULL);
1739 nfc_err(dev->dev, "Target release error %d\n", rc);
1744 static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg,
1745 struct sk_buff *resp)
1747 struct pn533_cmd_jump_dep_response *rsp;
1750 u8 active = *(u8 *)arg;
1755 return PTR_ERR(resp);
1757 if (dev->tgt_available_prots &&
1758 !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) {
1760 "The target does not support DEP\n");
1765 rsp = (struct pn533_cmd_jump_dep_response *)resp->data;
1767 rc = rsp->status & PN533_CMD_RET_MASK;
1768 if (rc != PN533_CMD_RET_SUCCESS) {
1770 "Bringing DEP link up failed (error 0x%x)\n", rc);
1774 if (!dev->tgt_available_prots) {
1775 struct nfc_target nfc_target;
1777 dev_dbg(dev->dev, "Creating new target\n");
1779 nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1780 nfc_target.nfcid1_len = 10;
1781 memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len);
1782 rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1);
1786 dev->tgt_available_prots = 0;
1789 dev->tgt_active_prot = NFC_PROTO_NFC_DEP;
1791 /* ATR_RES general bytes are located at offset 17 */
1792 target_gt_len = resp->len - 17;
1793 rc = nfc_set_remote_general_bytes(dev->nfc_dev,
1794 rsp->gt, target_gt_len);
1796 rc = nfc_dep_link_is_up(dev->nfc_dev,
1797 dev->nfc_dev->targets[0].idx,
1798 !active, NFC_RF_INITIATOR);
1801 dev_kfree_skb(resp);
1805 static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf);
1806 static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
1807 u8 comm_mode, u8 *gb, size_t gb_len)
1809 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1810 struct sk_buff *skb;
1812 u8 *next, *arg, nfcid3[NFC_NFCID3_MAXSIZE];
1813 u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
1815 dev_dbg(dev->dev, "%s\n", __func__);
1817 if (dev->poll_mod_count) {
1819 "Cannot bring the DEP link up while polling\n");
1823 if (dev->tgt_active_prot) {
1825 "There is already an active target\n");
1829 skb_len = 3 + gb_len; /* ActPass + BR + Next */
1830 skb_len += PASSIVE_DATA_LEN;
1833 skb_len += NFC_NFCID3_MAXSIZE;
1834 if (target && !target->nfcid2_len) {
1837 get_random_bytes(nfcid3 + 2, 6);
1840 skb = pn533_alloc_skb(dev, skb_len);
1844 *skb_put(skb, 1) = !comm_mode; /* ActPass */
1845 *skb_put(skb, 1) = 0x02; /* 424 kbps */
1847 next = skb_put(skb, 1); /* Next */
1850 /* Copy passive data */
1851 memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data, PASSIVE_DATA_LEN);
1854 /* Copy NFCID3 (which is NFCID2 from SENSF_RES) */
1855 if (target && target->nfcid2_len)
1856 memcpy(skb_put(skb, NFC_NFCID3_MAXSIZE), target->nfcid2,
1857 target->nfcid2_len);
1859 memcpy(skb_put(skb, NFC_NFCID3_MAXSIZE), nfcid3,
1860 NFC_NFCID3_MAXSIZE);
1863 if (gb != NULL && gb_len > 0) {
1864 memcpy(skb_put(skb, gb_len), gb, gb_len);
1865 *next |= 4; /* We have some Gi */
1870 arg = kmalloc(sizeof(*arg), GFP_KERNEL);
1878 pn533_rf_field(dev->nfc_dev, 0);
1880 rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb,
1881 pn533_in_dep_link_up_complete, arg);
1891 static int pn533_dep_link_down(struct nfc_dev *nfc_dev)
1893 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1895 dev_dbg(dev->dev, "%s\n", __func__);
1897 pn533_poll_reset_mod_list(dev);
1899 if (dev->tgt_mode || dev->tgt_active_prot)
1900 dev->phy_ops->abort_cmd(dev, GFP_KERNEL);
1902 dev->tgt_active_prot = 0;
1905 skb_queue_purge(&dev->resp_q);
1910 struct pn533_data_exchange_arg {
1911 data_exchange_cb_t cb;
1915 static struct sk_buff *pn533_build_response(struct pn533 *dev)
1917 struct sk_buff *skb, *tmp, *t;
1918 unsigned int skb_len = 0, tmp_len = 0;
1920 dev_dbg(dev->dev, "%s\n", __func__);
1922 if (skb_queue_empty(&dev->resp_q))
1925 if (skb_queue_len(&dev->resp_q) == 1) {
1926 skb = skb_dequeue(&dev->resp_q);
1930 skb_queue_walk_safe(&dev->resp_q, tmp, t)
1931 skb_len += tmp->len;
1933 dev_dbg(dev->dev, "%s total length %d\n",
1936 skb = alloc_skb(skb_len, GFP_KERNEL);
1940 skb_put(skb, skb_len);
1942 skb_queue_walk_safe(&dev->resp_q, tmp, t) {
1943 memcpy(skb->data + tmp_len, tmp->data, tmp->len);
1944 tmp_len += tmp->len;
1948 skb_queue_purge(&dev->resp_q);
1953 static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg,
1954 struct sk_buff *resp)
1956 struct pn533_data_exchange_arg *arg = _arg;
1957 struct sk_buff *skb;
1961 dev_dbg(dev->dev, "%s\n", __func__);
1968 status = resp->data[0];
1969 ret = status & PN533_CMD_RET_MASK;
1970 mi = status & PN533_CMD_MI_MASK;
1972 skb_pull(resp, sizeof(status));
1974 if (ret != PN533_CMD_RET_SUCCESS) {
1976 "Exchanging data failed (error 0x%x)\n", ret);
1981 skb_queue_tail(&dev->resp_q, resp);
1984 dev->cmd_complete_mi_arg = arg;
1985 queue_work(dev->wq, &dev->mi_rx_work);
1986 return -EINPROGRESS;
1989 /* Prepare for the next round */
1990 if (skb_queue_len(&dev->fragment_skb) > 0) {
1991 dev->cmd_complete_dep_arg = arg;
1992 queue_work(dev->wq, &dev->mi_tx_work);
1994 return -EINPROGRESS;
1997 skb = pn533_build_response(dev);
2003 arg->cb(arg->cb_context, skb, 0);
2008 dev_kfree_skb(resp);
2010 skb_queue_purge(&dev->resp_q);
2011 arg->cb(arg->cb_context, NULL, rc);
2017 * Receive an incoming pn533 frame. skb contains only header and payload.
2018 * If skb == NULL, it is a notification that the link below is dead.
2020 void pn533_recv_frame(struct pn533 *dev, struct sk_buff *skb, int status)
2025 dev->cmd->status = status;
2028 dev_dbg(dev->dev, "%s: Error received: %d\n", __func__, status);
2033 pr_err("NULL Frame -> link is dead\n");
2037 if (pn533_rx_frame_is_ack(skb->data)) {
2038 dev_dbg(dev->dev, "%s: Received ACK frame\n", __func__);
2043 print_hex_dump_debug("PN533 RX: ", DUMP_PREFIX_NONE, 16, 1, skb->data,
2044 dev->ops->rx_frame_size(skb->data), false);
2046 if (!dev->ops->rx_is_frame_valid(skb->data, dev)) {
2047 nfc_err(dev->dev, "Received an invalid frame\n");
2048 dev->cmd->status = -EIO;
2049 } else if (!pn533_rx_frame_is_cmd_response(dev, skb->data)) {
2050 nfc_err(dev->dev, "It it not the response to the last command\n");
2051 dev->cmd->status = -EIO;
2054 dev->cmd->resp = skb;
2057 queue_work(dev->wq, &dev->cmd_complete_work);
2059 EXPORT_SYMBOL(pn533_recv_frame);
2061 /* Split the Tx skb into small chunks */
2062 static int pn533_fill_fragment_skbs(struct pn533 *dev, struct sk_buff *skb)
2064 struct sk_buff *frag;
2068 /* Remaining size */
2069 if (skb->len > PN533_CMD_DATAFRAME_MAXLEN)
2070 frag_size = PN533_CMD_DATAFRAME_MAXLEN;
2072 frag_size = skb->len;
2074 /* Allocate and reserve */
2075 frag = pn533_alloc_skb(dev, frag_size);
2077 skb_queue_purge(&dev->fragment_skb);
2081 if (!dev->tgt_mode) {
2082 /* Reserve the TG/MI byte */
2083 skb_reserve(frag, 1);
2086 if (frag_size == PN533_CMD_DATAFRAME_MAXLEN)
2087 *skb_push(frag, sizeof(u8)) =
2088 (PN533_CMD_MI_MASK | 1);
2090 *skb_push(frag, sizeof(u8)) = 1; /* TG */
2093 memcpy(skb_put(frag, frag_size), skb->data, frag_size);
2095 /* Reduce the size of incoming buffer */
2096 skb_pull(skb, frag_size);
2098 /* Add this to skb_queue */
2099 skb_queue_tail(&dev->fragment_skb, frag);
2101 } while (skb->len > 0);
2105 return skb_queue_len(&dev->fragment_skb);
2108 static int pn533_transceive(struct nfc_dev *nfc_dev,
2109 struct nfc_target *target, struct sk_buff *skb,
2110 data_exchange_cb_t cb, void *cb_context)
2112 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2113 struct pn533_data_exchange_arg *arg = NULL;
2116 dev_dbg(dev->dev, "%s\n", __func__);
2118 if (!dev->tgt_active_prot) {
2120 "Can't exchange data if there is no active target\n");
2125 arg = kmalloc(sizeof(*arg), GFP_KERNEL);
2132 arg->cb_context = cb_context;
2134 switch (dev->device_type) {
2135 case PN533_DEVICE_PASORI:
2136 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
2137 rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU,
2139 pn533_data_exchange_complete,
2146 if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
2147 rc = pn533_fill_fragment_skbs(dev, skb);
2151 skb = skb_dequeue(&dev->fragment_skb);
2157 *skb_push(skb, sizeof(u8)) = 1; /* TG */
2160 rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE,
2161 skb, pn533_data_exchange_complete,
2167 if (rc < 0) /* rc from send_async */
2178 static int pn533_tm_send_complete(struct pn533 *dev, void *arg,
2179 struct sk_buff *resp)
2183 dev_dbg(dev->dev, "%s\n", __func__);
2186 return PTR_ERR(resp);
2188 status = resp->data[0];
2190 /* Prepare for the next round */
2191 if (skb_queue_len(&dev->fragment_skb) > 0) {
2192 queue_work(dev->wq, &dev->mi_tm_tx_work);
2193 return -EINPROGRESS;
2195 dev_kfree_skb(resp);
2198 nfc_tm_deactivated(dev->nfc_dev);
2205 queue_work(dev->wq, &dev->tg_work);
2210 static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
2212 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2215 dev_dbg(dev->dev, "%s\n", __func__);
2217 /* let's split in multiple chunks if size's too big */
2218 if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
2219 rc = pn533_fill_fragment_skbs(dev, skb);
2223 /* get the first skb */
2224 skb = skb_dequeue(&dev->fragment_skb);
2230 rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_META_DATA, skb,
2231 pn533_tm_send_complete, NULL);
2234 rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb,
2235 pn533_tm_send_complete, NULL);
2241 skb_queue_purge(&dev->fragment_skb);
2247 static void pn533_wq_mi_recv(struct work_struct *work)
2249 struct pn533 *dev = container_of(work, struct pn533, mi_rx_work);
2250 struct sk_buff *skb;
2253 dev_dbg(dev->dev, "%s\n", __func__);
2255 skb = pn533_alloc_skb(dev, PN533_CMD_DATAEXCH_HEAD_LEN);
2259 switch (dev->device_type) {
2260 case PN533_DEVICE_PASORI:
2261 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
2262 rc = pn533_send_cmd_direct_async(dev,
2263 PN533_CMD_IN_COMM_THRU,
2265 pn533_data_exchange_complete,
2266 dev->cmd_complete_mi_arg);
2271 *skb_put(skb, sizeof(u8)) = 1; /*TG*/
2273 rc = pn533_send_cmd_direct_async(dev,
2274 PN533_CMD_IN_DATA_EXCHANGE,
2276 pn533_data_exchange_complete,
2277 dev->cmd_complete_mi_arg);
2282 if (rc == 0) /* success */
2286 "Error %d when trying to perform data_exchange\n", rc);
2289 kfree(dev->cmd_complete_mi_arg);
2292 dev->phy_ops->send_ack(dev, GFP_KERNEL);
2293 queue_work(dev->wq, &dev->cmd_work);
2296 static void pn533_wq_mi_send(struct work_struct *work)
2298 struct pn533 *dev = container_of(work, struct pn533, mi_tx_work);
2299 struct sk_buff *skb;
2302 dev_dbg(dev->dev, "%s\n", __func__);
2304 /* Grab the first skb in the queue */
2305 skb = skb_dequeue(&dev->fragment_skb);
2307 if (skb == NULL) { /* No more data */
2308 /* Reset the queue for future use */
2309 skb_queue_head_init(&dev->fragment_skb);
2313 switch (dev->device_type) {
2314 case PN533_DEVICE_PASORI:
2315 if (dev->tgt_active_prot != NFC_PROTO_FELICA) {
2320 rc = pn533_send_cmd_direct_async(dev, PN533_CMD_IN_COMM_THRU,
2322 pn533_data_exchange_complete,
2323 dev->cmd_complete_dep_arg);
2328 /* Still some fragments? */
2329 rc = pn533_send_cmd_direct_async(dev,
2330 PN533_CMD_IN_DATA_EXCHANGE,
2332 pn533_data_exchange_complete,
2333 dev->cmd_complete_dep_arg);
2338 if (rc == 0) /* success */
2342 "Error %d when trying to perform data_exchange\n", rc);
2345 kfree(dev->cmd_complete_dep_arg);
2348 dev->phy_ops->send_ack(dev, GFP_KERNEL);
2349 queue_work(dev->wq, &dev->cmd_work);
2352 static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata,
2355 struct sk_buff *skb;
2356 struct sk_buff *resp;
2359 dev_dbg(dev->dev, "%s\n", __func__);
2361 skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */
2363 skb = pn533_alloc_skb(dev, skb_len);
2367 *skb_put(skb, sizeof(cfgitem)) = cfgitem;
2368 memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len);
2370 resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb);
2372 return PTR_ERR(resp);
2374 dev_kfree_skb(resp);
2378 static int pn533_get_firmware_version(struct pn533 *dev,
2379 struct pn533_fw_version *fv)
2381 struct sk_buff *skb;
2382 struct sk_buff *resp;
2384 skb = pn533_alloc_skb(dev, 0);
2388 resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb);
2390 return PTR_ERR(resp);
2392 fv->ic = resp->data[0];
2393 fv->ver = resp->data[1];
2394 fv->rev = resp->data[2];
2395 fv->support = resp->data[3];
2397 dev_kfree_skb(resp);
2401 static int pn533_pasori_fw_reset(struct pn533 *dev)
2403 struct sk_buff *skb;
2404 struct sk_buff *resp;
2406 dev_dbg(dev->dev, "%s\n", __func__);
2408 skb = pn533_alloc_skb(dev, sizeof(u8));
2412 *skb_put(skb, sizeof(u8)) = 0x1;
2414 resp = pn533_send_cmd_sync(dev, 0x18, skb);
2416 return PTR_ERR(resp);
2418 dev_kfree_skb(resp);
2423 static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf)
2425 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2429 rf_field |= PN533_CFGITEM_RF_FIELD_AUTO_RFCA;
2431 rc = pn533_set_configuration(dev, PN533_CFGITEM_RF_FIELD,
2432 (u8 *)&rf_field, 1);
2434 nfc_err(dev->dev, "Error on setting RF field\n");
2441 static int pn532_sam_configuration(struct nfc_dev *nfc_dev)
2443 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2444 struct sk_buff *skb;
2445 struct sk_buff *resp;
2447 skb = pn533_alloc_skb(dev, 1);
2451 *skb_put(skb, 1) = 0x01;
2453 resp = pn533_send_cmd_sync(dev, PN533_CMD_SAM_CONFIGURATION, skb);
2455 return PTR_ERR(resp);
2457 dev_kfree_skb(resp);
2461 static int pn533_dev_up(struct nfc_dev *nfc_dev)
2463 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2465 if (dev->device_type == PN533_DEVICE_PN532) {
2466 int rc = pn532_sam_configuration(nfc_dev);
2472 return pn533_rf_field(nfc_dev, 1);
2475 static int pn533_dev_down(struct nfc_dev *nfc_dev)
2477 return pn533_rf_field(nfc_dev, 0);
2480 static struct nfc_ops pn533_nfc_ops = {
2481 .dev_up = pn533_dev_up,
2482 .dev_down = pn533_dev_down,
2483 .dep_link_up = pn533_dep_link_up,
2484 .dep_link_down = pn533_dep_link_down,
2485 .start_poll = pn533_start_poll,
2486 .stop_poll = pn533_stop_poll,
2487 .activate_target = pn533_activate_target,
2488 .deactivate_target = pn533_deactivate_target,
2489 .im_transceive = pn533_transceive,
2490 .tm_send = pn533_tm_send,
2493 static int pn533_setup(struct pn533 *dev)
2495 struct pn533_config_max_retries max_retries;
2496 struct pn533_config_timing timing;
2497 u8 pasori_cfg[3] = {0x08, 0x01, 0x08};
2500 switch (dev->device_type) {
2501 case PN533_DEVICE_STD:
2502 case PN533_DEVICE_PASORI:
2503 case PN533_DEVICE_ACR122U:
2504 case PN533_DEVICE_PN532:
2505 max_retries.mx_rty_atr = 0x2;
2506 max_retries.mx_rty_psl = 0x1;
2507 max_retries.mx_rty_passive_act =
2508 PN533_CONFIG_MAX_RETRIES_NO_RETRY;
2510 timing.rfu = PN533_CONFIG_TIMING_102;
2511 timing.atr_res_timeout = PN533_CONFIG_TIMING_102;
2512 timing.dep_timeout = PN533_CONFIG_TIMING_204;
2517 nfc_err(dev->dev, "Unknown device type %d\n",
2522 rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES,
2523 (u8 *)&max_retries, sizeof(max_retries));
2526 "Error on setting MAX_RETRIES config\n");
2531 rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING,
2532 (u8 *)&timing, sizeof(timing));
2534 nfc_err(dev->dev, "Error on setting RF timings\n");
2538 switch (dev->device_type) {
2539 case PN533_DEVICE_STD:
2540 case PN533_DEVICE_PN532:
2543 case PN533_DEVICE_PASORI:
2544 pn533_pasori_fw_reset(dev);
2546 rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI,
2550 "Error while settings PASORI config\n");
2554 pn533_pasori_fw_reset(dev);
2562 struct pn533 *pn533_register_device(u32 device_type,
2564 enum pn533_protocol_type protocol_type,
2566 struct pn533_phy_ops *phy_ops,
2567 struct pn533_frame_ops *fops,
2569 struct device *parent)
2571 struct pn533_fw_version fw_ver;
2575 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2577 return ERR_PTR(-ENOMEM);
2580 priv->phy_ops = phy_ops;
2585 priv->ops = &pn533_std_frame_ops;
2587 priv->protocol_type = protocol_type;
2588 priv->device_type = device_type;
2590 mutex_init(&priv->cmd_lock);
2592 INIT_WORK(&priv->cmd_work, pn533_wq_cmd);
2593 INIT_WORK(&priv->cmd_complete_work, pn533_wq_cmd_complete);
2594 INIT_WORK(&priv->mi_rx_work, pn533_wq_mi_recv);
2595 INIT_WORK(&priv->mi_tx_work, pn533_wq_mi_send);
2596 INIT_WORK(&priv->tg_work, pn533_wq_tg_get_data);
2597 INIT_WORK(&priv->mi_tm_rx_work, pn533_wq_tm_mi_recv);
2598 INIT_WORK(&priv->mi_tm_tx_work, pn533_wq_tm_mi_send);
2599 INIT_DELAYED_WORK(&priv->poll_work, pn533_wq_poll);
2600 INIT_WORK(&priv->rf_work, pn533_wq_rf);
2601 priv->wq = alloc_ordered_workqueue("pn533", 0);
2602 if (priv->wq == NULL)
2605 init_timer(&priv->listen_timer);
2606 priv->listen_timer.data = (unsigned long) priv;
2607 priv->listen_timer.function = pn533_listen_mode_timer;
2609 skb_queue_head_init(&priv->resp_q);
2610 skb_queue_head_init(&priv->fragment_skb);
2612 INIT_LIST_HEAD(&priv->cmd_queue);
2614 memset(&fw_ver, 0, sizeof(fw_ver));
2615 rc = pn533_get_firmware_version(priv, &fw_ver);
2619 nfc_info(dev, "NXP PN5%02X firmware ver %d.%d now attached\n",
2620 fw_ver.ic, fw_ver.ver, fw_ver.rev);
2623 priv->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols,
2624 priv->ops->tx_header_len +
2625 PN533_CMD_DATAEXCH_HEAD_LEN,
2626 priv->ops->tx_tail_len);
2627 if (!priv->nfc_dev) {
2632 nfc_set_parent_dev(priv->nfc_dev, parent);
2633 nfc_set_drvdata(priv->nfc_dev, priv);
2635 rc = nfc_register_device(priv->nfc_dev);
2639 rc = pn533_setup(priv);
2641 goto unregister_nfc_dev;
2646 nfc_unregister_device(priv->nfc_dev);
2649 nfc_free_device(priv->nfc_dev);
2652 destroy_workqueue(priv->wq);
2657 EXPORT_SYMBOL_GPL(pn533_register_device);
2659 void pn533_unregister_device(struct pn533 *priv)
2661 struct pn533_cmd *cmd, *n;
2663 nfc_unregister_device(priv->nfc_dev);
2664 nfc_free_device(priv->nfc_dev);
2666 flush_delayed_work(&priv->poll_work);
2667 destroy_workqueue(priv->wq);
2669 skb_queue_purge(&priv->resp_q);
2671 del_timer(&priv->listen_timer);
2673 list_for_each_entry_safe(cmd, n, &priv->cmd_queue, queue) {
2674 list_del(&cmd->queue);
2680 EXPORT_SYMBOL_GPL(pn533_unregister_device);
2683 MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>");
2684 MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
2685 MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>");
2686 MODULE_DESCRIPTION("PN533 driver ver " VERSION);
2687 MODULE_VERSION(VERSION);
2688 MODULE_LICENSE("GPL");