1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Driver for NXP PN533 NFC Chip - core functions
5 * Copyright (C) 2011 Instituto Nokia de Tecnologia
6 * Copyright (C) 2012-2013 Tieto Poland
9 #include <linux/device.h>
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/slab.h>
13 #include <linux/nfc.h>
14 #include <linux/netdevice.h>
15 #include <net/nfc/nfc.h>
20 /* How much time we spend listening for initiators */
21 #define PN533_LISTEN_TIME 2
22 /* Delay between each poll frame (ms) */
23 #define PN533_POLL_INTERVAL 10
25 /* structs for pn533 commands */
27 /* PN533_CMD_GET_FIRMWARE_VERSION */
28 struct pn533_fw_version {
35 /* PN533_CMD_RF_CONFIGURATION */
36 #define PN533_CFGITEM_RF_FIELD 0x01
37 #define PN533_CFGITEM_TIMING 0x02
38 #define PN533_CFGITEM_MAX_RETRIES 0x05
39 #define PN533_CFGITEM_PASORI 0x82
41 #define PN533_CFGITEM_RF_FIELD_AUTO_RFCA 0x2
42 #define PN533_CFGITEM_RF_FIELD_ON 0x1
43 #define PN533_CFGITEM_RF_FIELD_OFF 0x0
45 #define PN533_CONFIG_TIMING_102 0xb
46 #define PN533_CONFIG_TIMING_204 0xc
47 #define PN533_CONFIG_TIMING_409 0xd
48 #define PN533_CONFIG_TIMING_819 0xe
50 #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00
51 #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF
53 struct pn533_config_max_retries {
56 u8 mx_rty_passive_act;
59 struct pn533_config_timing {
65 /* PN533_CMD_IN_LIST_PASSIVE_TARGET */
67 /* felica commands opcode */
68 #define PN533_FELICA_OPC_SENSF_REQ 0
69 #define PN533_FELICA_OPC_SENSF_RES 1
70 /* felica SENSF_REQ parameters */
71 #define PN533_FELICA_SENSF_SC_ALL 0xFFFF
72 #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0
73 #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1
74 #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2
76 /* type B initiator_data values */
77 #define PN533_TYPE_B_AFI_ALL_FAMILIES 0
78 #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0
79 #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1
81 union pn533_cmd_poll_initdata {
94 struct pn533_poll_modulations {
98 union pn533_cmd_poll_initdata initiator_data;
103 static const struct pn533_poll_modulations poll_mod[] = {
104 [PN533_POLL_MOD_106KBPS_A] = {
111 [PN533_POLL_MOD_212KBPS_FELICA] = {
115 .initiator_data.felica = {
116 .opcode = PN533_FELICA_OPC_SENSF_REQ,
117 .sc = PN533_FELICA_SENSF_SC_ALL,
118 .rc = PN533_FELICA_SENSF_RC_SYSTEM_CODE,
124 [PN533_POLL_MOD_424KBPS_FELICA] = {
128 .initiator_data.felica = {
129 .opcode = PN533_FELICA_OPC_SENSF_REQ,
130 .sc = PN533_FELICA_SENSF_SC_ALL,
131 .rc = PN533_FELICA_SENSF_RC_SYSTEM_CODE,
137 [PN533_POLL_MOD_106KBPS_JEWEL] = {
144 [PN533_POLL_MOD_847KBPS_B] = {
148 .initiator_data.type_b = {
149 .afi = PN533_TYPE_B_AFI_ALL_FAMILIES,
151 PN533_TYPE_B_POLL_METHOD_TIMESLOT,
156 [PN533_LISTEN_MOD] = {
161 /* PN533_CMD_IN_ATR */
163 struct pn533_cmd_activate_response {
175 struct pn533_cmd_jump_dep_response {
188 struct pn532_autopoll_resp {
195 /* PN532_CMD_IN_AUTOPOLL */
196 #define PN532_AUTOPOLL_POLLNR_INFINITE 0xff
197 #define PN532_AUTOPOLL_PERIOD 0x03 /* in units of 150 ms */
199 #define PN532_AUTOPOLL_TYPE_GENERIC_106 0x00
200 #define PN532_AUTOPOLL_TYPE_GENERIC_212 0x01
201 #define PN532_AUTOPOLL_TYPE_GENERIC_424 0x02
202 #define PN532_AUTOPOLL_TYPE_JEWEL 0x04
203 #define PN532_AUTOPOLL_TYPE_MIFARE 0x10
204 #define PN532_AUTOPOLL_TYPE_FELICA212 0x11
205 #define PN532_AUTOPOLL_TYPE_FELICA424 0x12
206 #define PN532_AUTOPOLL_TYPE_ISOA 0x20
207 #define PN532_AUTOPOLL_TYPE_ISOB 0x23
208 #define PN532_AUTOPOLL_TYPE_DEP_PASSIVE_106 0x40
209 #define PN532_AUTOPOLL_TYPE_DEP_PASSIVE_212 0x41
210 #define PN532_AUTOPOLL_TYPE_DEP_PASSIVE_424 0x42
211 #define PN532_AUTOPOLL_TYPE_DEP_ACTIVE_106 0x80
212 #define PN532_AUTOPOLL_TYPE_DEP_ACTIVE_212 0x81
213 #define PN532_AUTOPOLL_TYPE_DEP_ACTIVE_424 0x82
215 /* PN533_TG_INIT_AS_TARGET */
216 #define PN533_INIT_TARGET_PASSIVE 0x1
217 #define PN533_INIT_TARGET_DEP 0x2
219 #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3
220 #define PN533_INIT_TARGET_RESP_ACTIVE 0x1
221 #define PN533_INIT_TARGET_RESP_DEP 0x4
223 /* The rule: value(high byte) + value(low byte) + checksum = 0 */
224 static inline u8 pn533_ext_checksum(u16 value)
226 return ~(u8)(((value & 0xFF00) >> 8) + (u8)(value & 0xFF)) + 1;
229 /* The rule: value + checksum = 0 */
230 static inline u8 pn533_std_checksum(u8 value)
235 /* The rule: sum(data elements) + checksum = 0 */
236 static u8 pn533_std_data_checksum(u8 *data, int datalen)
241 for (i = 0; i < datalen; i++)
244 return pn533_std_checksum(sum);
247 static void pn533_std_tx_frame_init(void *_frame, u8 cmd_code)
249 struct pn533_std_frame *frame = _frame;
252 frame->start_frame = cpu_to_be16(PN533_STD_FRAME_SOF);
253 PN533_STD_FRAME_IDENTIFIER(frame) = PN533_STD_FRAME_DIR_OUT;
254 PN533_FRAME_CMD(frame) = cmd_code;
258 static void pn533_std_tx_frame_finish(void *_frame)
260 struct pn533_std_frame *frame = _frame;
262 frame->datalen_checksum = pn533_std_checksum(frame->datalen);
264 PN533_STD_FRAME_CHECKSUM(frame) =
265 pn533_std_data_checksum(frame->data, frame->datalen);
267 PN533_STD_FRAME_POSTAMBLE(frame) = 0;
270 static void pn533_std_tx_update_payload_len(void *_frame, int len)
272 struct pn533_std_frame *frame = _frame;
274 frame->datalen += len;
277 static bool pn533_std_rx_frame_is_valid(void *_frame, struct pn533 *dev)
280 struct pn533_std_frame *stdf = _frame;
282 if (stdf->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF))
285 if (likely(!PN533_STD_IS_EXTENDED(stdf))) {
286 /* Standard frame code */
287 dev->ops->rx_header_len = PN533_STD_FRAME_HEADER_LEN;
289 checksum = pn533_std_checksum(stdf->datalen);
290 if (checksum != stdf->datalen_checksum)
293 checksum = pn533_std_data_checksum(stdf->data, stdf->datalen);
294 if (checksum != PN533_STD_FRAME_CHECKSUM(stdf))
298 struct pn533_ext_frame *eif = _frame;
300 dev->ops->rx_header_len = PN533_EXT_FRAME_HEADER_LEN;
302 checksum = pn533_ext_checksum(be16_to_cpu(eif->datalen));
303 if (checksum != eif->datalen_checksum)
306 /* check data checksum */
307 checksum = pn533_std_data_checksum(eif->data,
308 be16_to_cpu(eif->datalen));
309 if (checksum != PN533_EXT_FRAME_CHECKSUM(eif))
316 bool pn533_rx_frame_is_ack(void *_frame)
318 struct pn533_std_frame *frame = _frame;
320 if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF))
323 if (frame->datalen != 0 || frame->datalen_checksum != 0xFF)
328 EXPORT_SYMBOL_GPL(pn533_rx_frame_is_ack);
330 static inline int pn533_std_rx_frame_size(void *frame)
332 struct pn533_std_frame *f = frame;
334 /* check for Extended Information frame */
335 if (PN533_STD_IS_EXTENDED(f)) {
336 struct pn533_ext_frame *eif = frame;
338 return sizeof(struct pn533_ext_frame)
339 + be16_to_cpu(eif->datalen) + PN533_STD_FRAME_TAIL_LEN;
342 return sizeof(struct pn533_std_frame) + f->datalen +
343 PN533_STD_FRAME_TAIL_LEN;
346 static u8 pn533_std_get_cmd_code(void *frame)
348 struct pn533_std_frame *f = frame;
349 struct pn533_ext_frame *eif = frame;
351 if (PN533_STD_IS_EXTENDED(f))
352 return PN533_FRAME_CMD(eif);
354 return PN533_FRAME_CMD(f);
357 bool pn533_rx_frame_is_cmd_response(struct pn533 *dev, void *frame)
359 return (dev->ops->get_cmd_code(frame) ==
360 PN533_CMD_RESPONSE(dev->cmd->code));
362 EXPORT_SYMBOL_GPL(pn533_rx_frame_is_cmd_response);
365 static struct pn533_frame_ops pn533_std_frame_ops = {
366 .tx_frame_init = pn533_std_tx_frame_init,
367 .tx_frame_finish = pn533_std_tx_frame_finish,
368 .tx_update_payload_len = pn533_std_tx_update_payload_len,
369 .tx_header_len = PN533_STD_FRAME_HEADER_LEN,
370 .tx_tail_len = PN533_STD_FRAME_TAIL_LEN,
372 .rx_is_frame_valid = pn533_std_rx_frame_is_valid,
373 .rx_frame_size = pn533_std_rx_frame_size,
374 .rx_header_len = PN533_STD_FRAME_HEADER_LEN,
375 .rx_tail_len = PN533_STD_FRAME_TAIL_LEN,
377 .max_payload_len = PN533_STD_FRAME_MAX_PAYLOAD_LEN,
378 .get_cmd_code = pn533_std_get_cmd_code,
381 static void pn533_build_cmd_frame(struct pn533 *dev, u8 cmd_code,
384 /* payload is already there, just update datalen */
385 int payload_len = skb->len;
386 struct pn533_frame_ops *ops = dev->ops;
389 skb_push(skb, ops->tx_header_len);
390 skb_put(skb, ops->tx_tail_len);
392 ops->tx_frame_init(skb->data, cmd_code);
393 ops->tx_update_payload_len(skb->data, payload_len);
394 ops->tx_frame_finish(skb->data);
397 static int pn533_send_async_complete(struct pn533 *dev)
399 struct pn533_cmd *cmd = dev->cmd;
400 struct sk_buff *resp;
404 dev_dbg(dev->dev, "%s: cmd not set\n", __func__);
408 dev_kfree_skb(cmd->req);
410 status = cmd->status;
414 rc = cmd->complete_cb(dev, cmd->complete_cb_context,
420 /* when no response is set we got interrupted */
422 resp = ERR_PTR(-EINTR);
425 skb_pull(resp, dev->ops->rx_header_len);
426 skb_trim(resp, resp->len - dev->ops->rx_tail_len);
429 rc = cmd->complete_cb(dev, cmd->complete_cb_context, resp);
437 static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
439 pn533_send_async_complete_t complete_cb,
440 void *complete_cb_context)
442 struct pn533_cmd *cmd;
445 dev_dbg(dev->dev, "Sending command 0x%x\n", cmd_code);
447 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
451 cmd->code = cmd_code;
453 cmd->complete_cb = complete_cb;
454 cmd->complete_cb_context = complete_cb_context;
456 pn533_build_cmd_frame(dev, cmd_code, req);
458 mutex_lock(&dev->cmd_lock);
460 if (!dev->cmd_pending) {
462 rc = dev->phy_ops->send_frame(dev, req);
468 dev->cmd_pending = 1;
472 dev_dbg(dev->dev, "%s Queueing command 0x%x\n",
475 INIT_LIST_HEAD(&cmd->queue);
476 list_add_tail(&cmd->queue, &dev->cmd_queue);
483 mutex_unlock(&dev->cmd_lock);
487 static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code,
489 pn533_send_async_complete_t complete_cb,
490 void *complete_cb_context)
492 return __pn533_send_async(dev, cmd_code, req, complete_cb,
493 complete_cb_context);
496 static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code,
498 pn533_send_async_complete_t complete_cb,
499 void *complete_cb_context)
501 return __pn533_send_async(dev, cmd_code, req, complete_cb,
502 complete_cb_context);
506 * pn533_send_cmd_direct_async
508 * The function sends a priority cmd directly to the chip omitting the cmd
509 * queue. It's intended to be used by chaining mechanism of received responses
510 * where the host has to request every single chunk of data before scheduling
511 * next cmd from the queue.
513 static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code,
515 pn533_send_async_complete_t complete_cb,
516 void *complete_cb_context)
518 struct pn533_cmd *cmd;
521 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
525 cmd->code = cmd_code;
527 cmd->complete_cb = complete_cb;
528 cmd->complete_cb_context = complete_cb_context;
530 pn533_build_cmd_frame(dev, cmd_code, req);
533 rc = dev->phy_ops->send_frame(dev, req);
542 static void pn533_wq_cmd_complete(struct work_struct *work)
544 struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work);
547 rc = pn533_send_async_complete(dev);
548 if (rc != -EINPROGRESS)
549 queue_work(dev->wq, &dev->cmd_work);
552 static void pn533_wq_cmd(struct work_struct *work)
554 struct pn533 *dev = container_of(work, struct pn533, cmd_work);
555 struct pn533_cmd *cmd;
558 mutex_lock(&dev->cmd_lock);
560 if (list_empty(&dev->cmd_queue)) {
561 dev->cmd_pending = 0;
562 mutex_unlock(&dev->cmd_lock);
566 cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue);
568 list_del(&cmd->queue);
570 mutex_unlock(&dev->cmd_lock);
573 rc = dev->phy_ops->send_frame(dev, cmd->req);
576 dev_kfree_skb(cmd->req);
583 struct pn533_sync_cmd_response {
584 struct sk_buff *resp;
585 struct completion done;
588 static int pn533_send_sync_complete(struct pn533 *dev, void *_arg,
589 struct sk_buff *resp)
591 struct pn533_sync_cmd_response *arg = _arg;
594 complete(&arg->done);
599 /* pn533_send_cmd_sync
601 * Please note the req parameter is freed inside the function to
602 * limit a number of return value interpretations by the caller.
604 * 1. negative in case of error during TX path -> req should be freed
606 * 2. negative in case of error during RX path -> req should not be freed
607 * as it's been already freed at the beginning of RX path by
610 * 3. valid pointer in case of successful RX path
612 * A caller has to check a return value with IS_ERR macro. If the test pass,
613 * the returned pointer is valid.
616 static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code,
620 struct pn533_sync_cmd_response arg;
622 init_completion(&arg.done);
624 rc = pn533_send_cmd_async(dev, cmd_code, req,
625 pn533_send_sync_complete, &arg);
631 wait_for_completion(&arg.done);
636 static struct sk_buff *pn533_alloc_skb(struct pn533 *dev, unsigned int size)
640 skb = alloc_skb(dev->ops->tx_header_len +
642 dev->ops->tx_tail_len, GFP_KERNEL);
645 skb_reserve(skb, dev->ops->tx_header_len);
650 struct pn533_target_type_a {
658 #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6))
659 #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0))
660 #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8))
662 #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00
663 #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C
665 #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
666 #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2)
668 #define PN533_TYPE_A_SEL_PROT_MIFARE 0
669 #define PN533_TYPE_A_SEL_PROT_ISO14443 1
670 #define PN533_TYPE_A_SEL_PROT_DEP 2
671 #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3
673 static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a,
679 if (target_data_len < sizeof(struct pn533_target_type_a))
683 * The length check of nfcid[] and ats[] are not being performed because
684 * the values are not being used
687 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
688 ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res);
689 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res);
691 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
692 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
693 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
694 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
697 /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */
698 if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0)
701 if (type_a->nfcid_len > NFC_NFCID1_MAXSIZE)
707 static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data,
710 struct pn533_target_type_a *tgt_type_a;
712 tgt_type_a = (struct pn533_target_type_a *)tgt_data;
714 if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len))
717 switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) {
718 case PN533_TYPE_A_SEL_PROT_MIFARE:
719 nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK;
721 case PN533_TYPE_A_SEL_PROT_ISO14443:
722 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK;
724 case PN533_TYPE_A_SEL_PROT_DEP:
725 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
727 case PN533_TYPE_A_SEL_PROT_ISO14443_DEP:
728 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK |
729 NFC_PROTO_NFC_DEP_MASK;
733 nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res);
734 nfc_tgt->sel_res = tgt_type_a->sel_res;
735 nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len;
736 memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len);
741 struct pn533_target_felica {
744 u8 nfcid2[NFC_NFCID2_MAXSIZE];
750 #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01
751 #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE
753 static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica,
756 if (target_data_len < sizeof(struct pn533_target_felica))
759 if (felica->opcode != PN533_FELICA_OPC_SENSF_RES)
765 static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data,
768 struct pn533_target_felica *tgt_felica;
770 tgt_felica = (struct pn533_target_felica *)tgt_data;
772 if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len))
775 if ((tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1) &&
776 (tgt_felica->nfcid2[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2))
777 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
779 nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK;
781 memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9);
782 nfc_tgt->sensf_res_len = 9;
784 memcpy(nfc_tgt->nfcid2, tgt_felica->nfcid2, NFC_NFCID2_MAXSIZE);
785 nfc_tgt->nfcid2_len = NFC_NFCID2_MAXSIZE;
790 struct pn533_target_jewel {
795 static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel,
801 if (target_data_len < sizeof(struct pn533_target_jewel))
804 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
805 ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res);
806 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res);
808 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
809 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
810 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
811 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
817 static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data,
820 struct pn533_target_jewel *tgt_jewel;
822 tgt_jewel = (struct pn533_target_jewel *)tgt_data;
824 if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len))
827 nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK;
828 nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res);
829 nfc_tgt->nfcid1_len = 4;
830 memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len);
835 struct pn533_type_b_prot_info {
841 #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4)
842 #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0)
843 #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8
845 struct pn533_type_b_sens_res {
849 struct pn533_type_b_prot_info prot_info;
852 #define PN533_TYPE_B_OPC_SENSB_RES 0x50
854 struct pn533_target_type_b {
855 struct pn533_type_b_sens_res sensb_res;
860 static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b,
863 if (target_data_len < sizeof(struct pn533_target_type_b))
866 if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES)
869 if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) &
870 PN533_TYPE_B_PROT_TYPE_RFU_MASK)
876 static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data,
879 struct pn533_target_type_b *tgt_type_b;
881 tgt_type_b = (struct pn533_target_type_b *)tgt_data;
883 if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len))
886 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
891 static void pn533_poll_reset_mod_list(struct pn533 *dev);
892 static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata,
895 struct nfc_target nfc_tgt;
898 dev_dbg(dev->dev, "%s: modulation=%d\n",
899 __func__, dev->poll_mod_curr);
904 memset(&nfc_tgt, 0, sizeof(struct nfc_target));
906 switch (dev->poll_mod_curr) {
907 case PN533_POLL_MOD_106KBPS_A:
908 rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len);
910 case PN533_POLL_MOD_212KBPS_FELICA:
911 case PN533_POLL_MOD_424KBPS_FELICA:
912 rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len);
914 case PN533_POLL_MOD_106KBPS_JEWEL:
915 rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len);
917 case PN533_POLL_MOD_847KBPS_B:
918 rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len);
922 "Unknown current poll modulation\n");
929 if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) {
931 "The Tg found doesn't have the desired protocol\n");
936 "Target found - supported protocols: 0x%x\n",
937 nfc_tgt.supported_protocols);
939 dev->tgt_available_prots = nfc_tgt.supported_protocols;
941 pn533_poll_reset_mod_list(dev);
942 nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1);
947 static inline void pn533_poll_next_mod(struct pn533 *dev)
949 dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count;
952 static void pn533_poll_reset_mod_list(struct pn533 *dev)
954 dev->poll_mod_count = 0;
957 static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index)
959 dev->poll_mod_active[dev->poll_mod_count] =
960 (struct pn533_poll_modulations *)&poll_mod[mod_index];
961 dev->poll_mod_count++;
964 static void pn533_poll_create_mod_list(struct pn533 *dev,
965 u32 im_protocols, u32 tm_protocols)
967 pn533_poll_reset_mod_list(dev);
969 if ((im_protocols & NFC_PROTO_MIFARE_MASK) ||
970 (im_protocols & NFC_PROTO_ISO14443_MASK) ||
971 (im_protocols & NFC_PROTO_NFC_DEP_MASK))
972 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A);
974 if (im_protocols & NFC_PROTO_FELICA_MASK ||
975 im_protocols & NFC_PROTO_NFC_DEP_MASK) {
976 pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA);
977 pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA);
980 if (im_protocols & NFC_PROTO_JEWEL_MASK)
981 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL);
983 if (im_protocols & NFC_PROTO_ISO14443_B_MASK)
984 pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B);
987 pn533_poll_add_mod(dev, PN533_LISTEN_MOD);
990 static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp)
992 u8 nbtg, tg, *tgdata;
995 /* Toggle the DEP polling */
996 if (dev->poll_protocols & NFC_PROTO_NFC_DEP_MASK)
999 nbtg = resp->data[0];
1001 tgdata = &resp->data[2];
1002 tgdata_len = resp->len - 2; /* nbtg + tg */
1005 rc = pn533_target_found(dev, tg, tgdata, tgdata_len);
1007 /* We must stop the poll after a valid target found */
1015 static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev)
1017 struct sk_buff *skb;
1018 u8 *felica, *nfcid3;
1020 u8 *gbytes = dev->gb;
1021 size_t gbytes_len = dev->gb_len;
1023 u8 felica_params[18] = {0x1, 0xfe, /* DEP */
1024 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */
1025 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1026 0xff, 0xff}; /* System code */
1028 u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */
1030 0x40}; /* SEL_RES for DEP */
1032 unsigned int skb_len = 36 + /*
1033 * mode (1), mifare (6),
1034 * felica (18), nfcid3 (10), gb_len (1)
1039 skb = pn533_alloc_skb(dev, skb_len);
1043 /* DEP support only */
1044 skb_put_u8(skb, PN533_INIT_TARGET_DEP);
1047 skb_put_data(skb, mifare_params, 6);
1050 felica = skb_put_data(skb, felica_params, 18);
1051 get_random_bytes(felica + 2, 6);
1054 nfcid3 = skb_put_zero(skb, 10);
1055 memcpy(nfcid3, felica, 8);
1058 skb_put_u8(skb, gbytes_len);
1060 skb_put_data(skb, gbytes, gbytes_len);
1068 static void pn533_wq_tm_mi_recv(struct work_struct *work);
1069 static struct sk_buff *pn533_build_response(struct pn533 *dev);
1071 static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg,
1072 struct sk_buff *resp)
1074 struct sk_buff *skb;
1079 skb_queue_purge(&dev->resp_q);
1080 return PTR_ERR(resp);
1083 status = resp->data[0];
1085 ret = status & PN533_CMD_RET_MASK;
1086 mi = status & PN533_CMD_MI_MASK;
1088 skb_pull(resp, sizeof(status));
1090 if (ret != PN533_CMD_RET_SUCCESS) {
1095 skb_queue_tail(&dev->resp_q, resp);
1098 queue_work(dev->wq, &dev->mi_tm_rx_work);
1099 return -EINPROGRESS;
1102 skb = pn533_build_response(dev);
1108 return nfc_tm_data_received(dev->nfc_dev, skb);
1111 nfc_tm_deactivated(dev->nfc_dev);
1113 skb_queue_purge(&dev->resp_q);
1114 dev_kfree_skb(resp);
1119 static void pn533_wq_tm_mi_recv(struct work_struct *work)
1121 struct pn533 *dev = container_of(work, struct pn533, mi_tm_rx_work);
1122 struct sk_buff *skb;
1125 skb = pn533_alloc_skb(dev, 0);
1129 rc = pn533_send_cmd_direct_async(dev,
1130 PN533_CMD_TG_GET_DATA,
1132 pn533_tm_get_data_complete,
1139 static int pn533_tm_send_complete(struct pn533 *dev, void *arg,
1140 struct sk_buff *resp);
1141 static void pn533_wq_tm_mi_send(struct work_struct *work)
1143 struct pn533 *dev = container_of(work, struct pn533, mi_tm_tx_work);
1144 struct sk_buff *skb;
1147 /* Grab the first skb in the queue */
1148 skb = skb_dequeue(&dev->fragment_skb);
1149 if (skb == NULL) { /* No more data */
1150 /* Reset the queue for future use */
1151 skb_queue_head_init(&dev->fragment_skb);
1155 /* last entry - remove MI bit */
1156 if (skb_queue_len(&dev->fragment_skb) == 0) {
1157 rc = pn533_send_cmd_direct_async(dev, PN533_CMD_TG_SET_DATA,
1158 skb, pn533_tm_send_complete, NULL);
1160 rc = pn533_send_cmd_direct_async(dev,
1161 PN533_CMD_TG_SET_META_DATA,
1162 skb, pn533_tm_send_complete, NULL);
1164 if (rc == 0) /* success */
1168 "Error %d when trying to perform set meta data_exchange", rc);
1173 dev->phy_ops->send_ack(dev, GFP_KERNEL);
1174 queue_work(dev->wq, &dev->cmd_work);
1177 static void pn533_wq_tg_get_data(struct work_struct *work)
1179 struct pn533 *dev = container_of(work, struct pn533, tg_work);
1180 struct sk_buff *skb;
1183 skb = pn533_alloc_skb(dev, 0);
1187 rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb,
1188 pn533_tm_get_data_complete, NULL);
1194 #define ATR_REQ_GB_OFFSET 17
1195 static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp)
1197 u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb;
1201 if (resp->len < ATR_REQ_GB_OFFSET + 1)
1204 mode = resp->data[0];
1205 cmd = &resp->data[1];
1207 dev_dbg(dev->dev, "Target mode 0x%x len %d\n",
1210 if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) ==
1211 PN533_INIT_TARGET_RESP_ACTIVE)
1212 comm_mode = NFC_COMM_ACTIVE;
1214 if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */
1217 gb = cmd + ATR_REQ_GB_OFFSET;
1218 gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1);
1220 rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK,
1221 comm_mode, gb, gb_len);
1224 "Error when signaling target activation\n");
1229 queue_work(dev->wq, &dev->tg_work);
1234 static void pn533_listen_mode_timer(struct timer_list *t)
1236 struct pn533 *dev = from_timer(dev, t, listen_timer);
1238 dev_dbg(dev->dev, "Listen mode timeout\n");
1240 dev->cancel_listen = 1;
1242 pn533_poll_next_mod(dev);
1244 queue_delayed_work(dev->wq, &dev->poll_work,
1245 msecs_to_jiffies(PN533_POLL_INTERVAL));
1248 static int pn533_rf_complete(struct pn533 *dev, void *arg,
1249 struct sk_buff *resp)
1256 nfc_err(dev->dev, "RF setting error %d\n", rc);
1261 queue_delayed_work(dev->wq, &dev->poll_work,
1262 msecs_to_jiffies(PN533_POLL_INTERVAL));
1264 dev_kfree_skb(resp);
1268 static void pn533_wq_rf(struct work_struct *work)
1270 struct pn533 *dev = container_of(work, struct pn533, rf_work);
1271 struct sk_buff *skb;
1274 skb = pn533_alloc_skb(dev, 2);
1278 skb_put_u8(skb, PN533_CFGITEM_RF_FIELD);
1279 skb_put_u8(skb, PN533_CFGITEM_RF_FIELD_AUTO_RFCA);
1281 rc = pn533_send_cmd_async(dev, PN533_CMD_RF_CONFIGURATION, skb,
1282 pn533_rf_complete, NULL);
1285 nfc_err(dev->dev, "RF setting error %d\n", rc);
1289 static int pn533_poll_dep_complete(struct pn533 *dev, void *arg,
1290 struct sk_buff *resp)
1292 struct pn533_cmd_jump_dep_response *rsp;
1293 struct nfc_target nfc_target;
1298 return PTR_ERR(resp);
1300 rsp = (struct pn533_cmd_jump_dep_response *)resp->data;
1302 rc = rsp->status & PN533_CMD_RET_MASK;
1303 if (rc != PN533_CMD_RET_SUCCESS) {
1304 /* Not target found, turn radio off */
1305 queue_work(dev->wq, &dev->rf_work);
1307 dev_kfree_skb(resp);
1311 dev_dbg(dev->dev, "Creating new target");
1313 nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1314 nfc_target.nfcid1_len = 10;
1315 memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len);
1316 rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1);
1320 dev->tgt_available_prots = 0;
1321 dev->tgt_active_prot = NFC_PROTO_NFC_DEP;
1323 /* ATR_RES general bytes are located at offset 17 */
1324 target_gt_len = resp->len - 17;
1325 rc = nfc_set_remote_general_bytes(dev->nfc_dev,
1326 rsp->gt, target_gt_len);
1328 rc = nfc_dep_link_is_up(dev->nfc_dev,
1329 dev->nfc_dev->targets[0].idx,
1330 0, NFC_RF_INITIATOR);
1333 pn533_poll_reset_mod_list(dev);
1336 dev_kfree_skb(resp);
1340 #define PASSIVE_DATA_LEN 5
1341 static int pn533_poll_dep(struct nfc_dev *nfc_dev)
1343 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1344 struct sk_buff *skb;
1346 u8 *next, nfcid3[NFC_NFCID3_MAXSIZE];
1347 u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
1350 dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len);
1352 if (!dev->gb || !dev->gb_len) {
1354 queue_work(dev->wq, &dev->rf_work);
1358 skb_len = 3 + dev->gb_len; /* ActPass + BR + Next */
1359 skb_len += PASSIVE_DATA_LEN;
1362 skb_len += NFC_NFCID3_MAXSIZE;
1365 get_random_bytes(nfcid3 + 2, 6);
1367 skb = pn533_alloc_skb(dev, skb_len);
1371 skb_put_u8(skb, 0x01); /* Active */
1372 skb_put_u8(skb, 0x02); /* 424 kbps */
1374 next = skb_put(skb, 1); /* Next */
1377 /* Copy passive data */
1378 skb_put_data(skb, passive_data, PASSIVE_DATA_LEN);
1381 /* Copy NFCID3 (which is NFCID2 from SENSF_RES) */
1382 skb_put_data(skb, nfcid3, NFC_NFCID3_MAXSIZE);
1385 skb_put_data(skb, 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_autopoll_complete(struct pn533 *dev, void *arg,
1398 struct sk_buff *resp)
1400 struct pn532_autopoll_resp *apr;
1401 struct nfc_target nfc_tgt;
1408 nfc_err(dev->dev, "%s autopoll 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 autopoll\n", rc);
1422 nbtg = resp->data[0];
1423 if ((nbtg > 2) || (nbtg <= 0))
1426 apr = (struct pn532_autopoll_resp *)&resp->data[1];
1428 memset(&nfc_tgt, 0, sizeof(struct nfc_target));
1429 switch (apr->type) {
1430 case PN532_AUTOPOLL_TYPE_ISOA:
1431 dev_dbg(dev->dev, "ISOA\n");
1432 rc = pn533_target_found_type_a(&nfc_tgt, apr->tgdata,
1435 case PN532_AUTOPOLL_TYPE_FELICA212:
1436 case PN532_AUTOPOLL_TYPE_FELICA424:
1437 dev_dbg(dev->dev, "FELICA\n");
1438 rc = pn533_target_found_felica(&nfc_tgt, apr->tgdata,
1441 case PN532_AUTOPOLL_TYPE_JEWEL:
1442 dev_dbg(dev->dev, "JEWEL\n");
1443 rc = pn533_target_found_jewel(&nfc_tgt, apr->tgdata,
1446 case PN532_AUTOPOLL_TYPE_ISOB:
1447 dev_dbg(dev->dev, "ISOB\n");
1448 rc = pn533_target_found_type_b(&nfc_tgt, apr->tgdata,
1451 case PN532_AUTOPOLL_TYPE_MIFARE:
1452 dev_dbg(dev->dev, "Mifare\n");
1453 rc = pn533_target_found_type_a(&nfc_tgt, apr->tgdata,
1458 "Unknown current poll modulation\n");
1465 if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) {
1467 "The Tg found doesn't have the desired protocol\n");
1472 dev->tgt_available_prots = nfc_tgt.supported_protocols;
1473 apr = (struct pn532_autopoll_resp *)
1474 (apr->tgdata + (apr->ln - 1));
1477 pn533_poll_reset_mod_list(dev);
1478 nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1);
1481 dev_kfree_skb(resp);
1485 nfc_err(dev->dev, "autopoll operation has been stopped\n");
1487 pn533_poll_reset_mod_list(dev);
1488 dev->poll_protocols = 0;
1492 static int pn533_poll_complete(struct pn533 *dev, void *arg,
1493 struct sk_buff *resp)
1495 struct pn533_poll_modulations *cur_mod;
1501 nfc_err(dev->dev, "%s Poll complete error %d\n",
1504 if (rc == -ENOENT) {
1505 if (dev->poll_mod_count != 0)
1508 } else if (rc < 0) {
1510 "Error %d when running poll\n", rc);
1515 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1517 if (cur_mod->len == 0) { /* Target mode */
1518 del_timer(&dev->listen_timer);
1519 rc = pn533_init_target_complete(dev, resp);
1523 /* Initiator mode */
1524 rc = pn533_start_poll_complete(dev, resp);
1528 if (!dev->poll_mod_count) {
1529 dev_dbg(dev->dev, "Polling has been stopped\n");
1533 pn533_poll_next_mod(dev);
1534 /* Not target found, turn radio off */
1535 queue_work(dev->wq, &dev->rf_work);
1538 dev_kfree_skb(resp);
1542 nfc_err(dev->dev, "Polling operation has been stopped\n");
1544 pn533_poll_reset_mod_list(dev);
1545 dev->poll_protocols = 0;
1549 static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533 *dev,
1550 struct pn533_poll_modulations *mod)
1552 struct sk_buff *skb;
1554 skb = pn533_alloc_skb(dev, mod->len);
1558 skb_put_data(skb, &mod->data, mod->len);
1563 static int pn533_send_poll_frame(struct pn533 *dev)
1565 struct pn533_poll_modulations *mod;
1566 struct sk_buff *skb;
1570 mod = dev->poll_mod_active[dev->poll_mod_curr];
1572 dev_dbg(dev->dev, "%s mod len %d\n",
1573 __func__, mod->len);
1575 if ((dev->poll_protocols & NFC_PROTO_NFC_DEP_MASK) && dev->poll_dep) {
1577 return pn533_poll_dep(dev->nfc_dev);
1580 if (mod->len == 0) { /* Listen mode */
1581 cmd_code = PN533_CMD_TG_INIT_AS_TARGET;
1582 skb = pn533_alloc_poll_tg_frame(dev);
1583 } else { /* Polling mode */
1584 cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET;
1585 skb = pn533_alloc_poll_in_frame(dev, mod);
1589 nfc_err(dev->dev, "Failed to allocate skb\n");
1593 rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete,
1597 nfc_err(dev->dev, "Polling loop error %d\n", rc);
1603 static void pn533_wq_poll(struct work_struct *work)
1605 struct pn533 *dev = container_of(work, struct pn533, poll_work.work);
1606 struct pn533_poll_modulations *cur_mod;
1609 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1612 "%s cancel_listen %d modulation len %d\n",
1613 __func__, dev->cancel_listen, cur_mod->len);
1615 if (dev->cancel_listen == 1) {
1616 dev->cancel_listen = 0;
1617 dev->phy_ops->abort_cmd(dev, GFP_ATOMIC);
1620 rc = pn533_send_poll_frame(dev);
1624 if (cur_mod->len == 0 && dev->poll_mod_count > 1)
1625 mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ);
1628 static int pn533_start_poll(struct nfc_dev *nfc_dev,
1629 u32 im_protocols, u32 tm_protocols)
1631 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1632 struct pn533_poll_modulations *cur_mod;
1633 struct sk_buff *skb;
1638 "%s: im protocols 0x%x tm protocols 0x%x\n",
1639 __func__, im_protocols, tm_protocols);
1641 if (dev->tgt_active_prot) {
1643 "Cannot poll with a target already activated\n");
1647 if (dev->tgt_mode) {
1649 "Cannot poll while already being activated\n");
1654 dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len);
1655 if (dev->gb == NULL)
1659 dev->poll_protocols = im_protocols;
1660 dev->listen_protocols = tm_protocols;
1661 if (dev->device_type == PN533_DEVICE_PN532_AUTOPOLL) {
1662 skb = pn533_alloc_skb(dev, 4 + 6);
1666 *((u8 *)skb_put(skb, sizeof(u8))) =
1667 PN532_AUTOPOLL_POLLNR_INFINITE;
1668 *((u8 *)skb_put(skb, sizeof(u8))) = PN532_AUTOPOLL_PERIOD;
1670 if ((im_protocols & NFC_PROTO_MIFARE_MASK) &&
1671 (im_protocols & NFC_PROTO_ISO14443_MASK) &&
1672 (im_protocols & NFC_PROTO_NFC_DEP_MASK))
1673 *((u8 *)skb_put(skb, sizeof(u8))) =
1674 PN532_AUTOPOLL_TYPE_GENERIC_106;
1676 if (im_protocols & NFC_PROTO_MIFARE_MASK)
1677 *((u8 *)skb_put(skb, sizeof(u8))) =
1678 PN532_AUTOPOLL_TYPE_MIFARE;
1680 if (im_protocols & NFC_PROTO_ISO14443_MASK)
1681 *((u8 *)skb_put(skb, sizeof(u8))) =
1682 PN532_AUTOPOLL_TYPE_ISOA;
1684 if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
1685 *((u8 *)skb_put(skb, sizeof(u8))) =
1686 PN532_AUTOPOLL_TYPE_DEP_PASSIVE_106;
1687 *((u8 *)skb_put(skb, sizeof(u8))) =
1688 PN532_AUTOPOLL_TYPE_DEP_PASSIVE_212;
1689 *((u8 *)skb_put(skb, sizeof(u8))) =
1690 PN532_AUTOPOLL_TYPE_DEP_PASSIVE_424;
1694 if (im_protocols & NFC_PROTO_FELICA_MASK ||
1695 im_protocols & NFC_PROTO_NFC_DEP_MASK) {
1696 *((u8 *)skb_put(skb, sizeof(u8))) =
1697 PN532_AUTOPOLL_TYPE_FELICA212;
1698 *((u8 *)skb_put(skb, sizeof(u8))) =
1699 PN532_AUTOPOLL_TYPE_FELICA424;
1702 if (im_protocols & NFC_PROTO_JEWEL_MASK)
1703 *((u8 *)skb_put(skb, sizeof(u8))) =
1704 PN532_AUTOPOLL_TYPE_JEWEL;
1706 if (im_protocols & NFC_PROTO_ISO14443_B_MASK)
1707 *((u8 *)skb_put(skb, sizeof(u8))) =
1708 PN532_AUTOPOLL_TYPE_ISOB;
1711 *((u8 *)skb_put(skb, sizeof(u8))) =
1712 PN532_AUTOPOLL_TYPE_DEP_ACTIVE_106;
1714 rc = pn533_send_cmd_async(dev, PN533_CMD_IN_AUTOPOLL, skb,
1715 pn533_autopoll_complete, NULL);
1720 dev->poll_mod_count++;
1725 pn533_poll_create_mod_list(dev, im_protocols, tm_protocols);
1727 /* Do not always start polling from the same modulation */
1728 get_random_bytes(&rand_mod, sizeof(rand_mod));
1729 rand_mod %= dev->poll_mod_count;
1730 dev->poll_mod_curr = rand_mod;
1732 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1734 rc = pn533_send_poll_frame(dev);
1736 /* Start listen timer */
1737 if (!rc && cur_mod->len == 0 && dev->poll_mod_count > 1)
1738 mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ);
1743 static void pn533_stop_poll(struct nfc_dev *nfc_dev)
1745 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1747 del_timer(&dev->listen_timer);
1749 if (!dev->poll_mod_count) {
1751 "Polling operation was not running\n");
1755 dev->phy_ops->abort_cmd(dev, GFP_KERNEL);
1756 flush_delayed_work(&dev->poll_work);
1757 pn533_poll_reset_mod_list(dev);
1760 static int pn533_activate_target_nfcdep(struct pn533 *dev)
1762 struct pn533_cmd_activate_response *rsp;
1765 struct sk_buff *skb;
1766 struct sk_buff *resp;
1768 skb = pn533_alloc_skb(dev, sizeof(u8) * 2); /*TG + Next*/
1772 skb_put_u8(skb, 1); /* TG */
1773 skb_put_u8(skb, 0); /* Next */
1775 resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb);
1777 return PTR_ERR(resp);
1779 rsp = (struct pn533_cmd_activate_response *)resp->data;
1780 rc = rsp->status & PN533_CMD_RET_MASK;
1781 if (rc != PN533_CMD_RET_SUCCESS) {
1783 "Target activation failed (error 0x%x)\n", rc);
1784 dev_kfree_skb(resp);
1788 /* ATR_RES general bytes are located at offset 16 */
1789 gt_len = resp->len - 16;
1790 rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len);
1792 dev_kfree_skb(resp);
1796 static int pn533_activate_target(struct nfc_dev *nfc_dev,
1797 struct nfc_target *target, u32 protocol)
1799 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1802 dev_dbg(dev->dev, "%s: protocol=%u\n", __func__, protocol);
1804 if (dev->poll_mod_count) {
1806 "Cannot activate while polling\n");
1810 if (dev->tgt_active_prot) {
1812 "There is already an active target\n");
1816 if (!dev->tgt_available_prots) {
1818 "There is no available target to activate\n");
1822 if (!(dev->tgt_available_prots & (1 << protocol))) {
1824 "Target doesn't support requested proto %u\n",
1829 if (protocol == NFC_PROTO_NFC_DEP) {
1830 rc = pn533_activate_target_nfcdep(dev);
1833 "Activating target with DEP failed %d\n", rc);
1838 dev->tgt_active_prot = protocol;
1839 dev->tgt_available_prots = 0;
1844 static int pn533_deactivate_target_complete(struct pn533 *dev, void *arg,
1845 struct sk_buff *resp)
1852 nfc_err(dev->dev, "Target release error %d\n", rc);
1857 rc = resp->data[0] & PN533_CMD_RET_MASK;
1858 if (rc != PN533_CMD_RET_SUCCESS)
1860 "Error 0x%x when releasing the target\n", rc);
1862 dev_kfree_skb(resp);
1866 static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
1867 struct nfc_target *target, u8 mode)
1869 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1870 struct sk_buff *skb;
1873 if (!dev->tgt_active_prot) {
1874 nfc_err(dev->dev, "There is no active target\n");
1878 dev->tgt_active_prot = 0;
1879 skb_queue_purge(&dev->resp_q);
1881 skb = pn533_alloc_skb(dev, sizeof(u8));
1885 skb_put_u8(skb, 1); /* TG*/
1887 rc = pn533_send_cmd_async(dev, PN533_CMD_IN_RELEASE, skb,
1888 pn533_deactivate_target_complete, NULL);
1891 nfc_err(dev->dev, "Target release error %d\n", rc);
1896 static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg,
1897 struct sk_buff *resp)
1899 struct pn533_cmd_jump_dep_response *rsp;
1902 u8 active = *(u8 *)arg;
1907 return PTR_ERR(resp);
1909 if (dev->tgt_available_prots &&
1910 !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) {
1912 "The target does not support DEP\n");
1917 rsp = (struct pn533_cmd_jump_dep_response *)resp->data;
1919 rc = rsp->status & PN533_CMD_RET_MASK;
1920 if (rc != PN533_CMD_RET_SUCCESS) {
1922 "Bringing DEP link up failed (error 0x%x)\n", rc);
1926 if (!dev->tgt_available_prots) {
1927 struct nfc_target nfc_target;
1929 dev_dbg(dev->dev, "Creating new target\n");
1931 nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1932 nfc_target.nfcid1_len = 10;
1933 memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len);
1934 rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1);
1938 dev->tgt_available_prots = 0;
1941 dev->tgt_active_prot = NFC_PROTO_NFC_DEP;
1943 /* ATR_RES general bytes are located at offset 17 */
1944 target_gt_len = resp->len - 17;
1945 rc = nfc_set_remote_general_bytes(dev->nfc_dev,
1946 rsp->gt, target_gt_len);
1948 rc = nfc_dep_link_is_up(dev->nfc_dev,
1949 dev->nfc_dev->targets[0].idx,
1950 !active, NFC_RF_INITIATOR);
1953 dev_kfree_skb(resp);
1957 static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf);
1958 static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
1959 u8 comm_mode, u8 *gb, size_t gb_len)
1961 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1962 struct sk_buff *skb;
1964 u8 *next, *arg, nfcid3[NFC_NFCID3_MAXSIZE];
1965 u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
1967 if (dev->poll_mod_count) {
1969 "Cannot bring the DEP link up while polling\n");
1973 if (dev->tgt_active_prot) {
1975 "There is already an active target\n");
1979 skb_len = 3 + gb_len; /* ActPass + BR + Next */
1980 skb_len += PASSIVE_DATA_LEN;
1983 skb_len += NFC_NFCID3_MAXSIZE;
1984 if (target && !target->nfcid2_len) {
1987 get_random_bytes(nfcid3 + 2, 6);
1990 skb = pn533_alloc_skb(dev, skb_len);
1994 skb_put_u8(skb, !comm_mode); /* ActPass */
1995 skb_put_u8(skb, 0x02); /* 424 kbps */
1997 next = skb_put(skb, 1); /* Next */
2000 /* Copy passive data */
2001 skb_put_data(skb, passive_data, PASSIVE_DATA_LEN);
2004 /* Copy NFCID3 (which is NFCID2 from SENSF_RES) */
2005 if (target && target->nfcid2_len)
2006 memcpy(skb_put(skb, NFC_NFCID3_MAXSIZE), target->nfcid2,
2007 target->nfcid2_len);
2009 skb_put_data(skb, nfcid3, NFC_NFCID3_MAXSIZE);
2012 if (gb != NULL && gb_len > 0) {
2013 skb_put_data(skb, gb, gb_len);
2014 *next |= 4; /* We have some Gi */
2019 arg = kmalloc(sizeof(*arg), GFP_KERNEL);
2027 pn533_rf_field(dev->nfc_dev, 0);
2029 rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb,
2030 pn533_in_dep_link_up_complete, arg);
2040 static int pn533_dep_link_down(struct nfc_dev *nfc_dev)
2042 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2044 pn533_poll_reset_mod_list(dev);
2046 if (dev->tgt_mode || dev->tgt_active_prot)
2047 dev->phy_ops->abort_cmd(dev, GFP_KERNEL);
2049 dev->tgt_active_prot = 0;
2052 skb_queue_purge(&dev->resp_q);
2057 struct pn533_data_exchange_arg {
2058 data_exchange_cb_t cb;
2062 static struct sk_buff *pn533_build_response(struct pn533 *dev)
2064 struct sk_buff *skb, *tmp, *t;
2065 unsigned int skb_len = 0, tmp_len = 0;
2067 if (skb_queue_empty(&dev->resp_q))
2070 if (skb_queue_len(&dev->resp_q) == 1) {
2071 skb = skb_dequeue(&dev->resp_q);
2075 skb_queue_walk_safe(&dev->resp_q, tmp, t)
2076 skb_len += tmp->len;
2078 dev_dbg(dev->dev, "%s total length %d\n",
2081 skb = alloc_skb(skb_len, GFP_KERNEL);
2085 skb_put(skb, skb_len);
2087 skb_queue_walk_safe(&dev->resp_q, tmp, t) {
2088 memcpy(skb->data + tmp_len, tmp->data, tmp->len);
2089 tmp_len += tmp->len;
2093 skb_queue_purge(&dev->resp_q);
2098 static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg,
2099 struct sk_buff *resp)
2101 struct pn533_data_exchange_arg *arg = _arg;
2102 struct sk_buff *skb;
2111 status = resp->data[0];
2112 ret = status & PN533_CMD_RET_MASK;
2113 mi = status & PN533_CMD_MI_MASK;
2115 skb_pull(resp, sizeof(status));
2117 if (ret != PN533_CMD_RET_SUCCESS) {
2119 "Exchanging data failed (error 0x%x)\n", ret);
2124 skb_queue_tail(&dev->resp_q, resp);
2127 dev->cmd_complete_mi_arg = arg;
2128 queue_work(dev->wq, &dev->mi_rx_work);
2129 return -EINPROGRESS;
2132 /* Prepare for the next round */
2133 if (skb_queue_len(&dev->fragment_skb) > 0) {
2134 dev->cmd_complete_dep_arg = arg;
2135 queue_work(dev->wq, &dev->mi_tx_work);
2137 return -EINPROGRESS;
2140 skb = pn533_build_response(dev);
2146 arg->cb(arg->cb_context, skb, 0);
2151 dev_kfree_skb(resp);
2153 skb_queue_purge(&dev->resp_q);
2154 arg->cb(arg->cb_context, NULL, rc);
2160 * Receive an incoming pn533 frame. skb contains only header and payload.
2161 * If skb == NULL, it is a notification that the link below is dead.
2163 void pn533_recv_frame(struct pn533 *dev, struct sk_buff *skb, int status)
2168 dev->cmd->status = status;
2171 dev_dbg(dev->dev, "%s: Error received: %d\n", __func__, status);
2176 pr_err("NULL Frame -> link is dead\n");
2180 if (pn533_rx_frame_is_ack(skb->data)) {
2181 dev_dbg(dev->dev, "%s: Received ACK frame\n", __func__);
2186 print_hex_dump_debug("PN533 RX: ", DUMP_PREFIX_NONE, 16, 1, skb->data,
2187 dev->ops->rx_frame_size(skb->data), false);
2189 if (!dev->ops->rx_is_frame_valid(skb->data, dev)) {
2190 nfc_err(dev->dev, "Received an invalid frame\n");
2191 dev->cmd->status = -EIO;
2192 } else if (!pn533_rx_frame_is_cmd_response(dev, skb->data)) {
2193 nfc_err(dev->dev, "It it not the response to the last command\n");
2194 dev->cmd->status = -EIO;
2197 dev->cmd->resp = skb;
2200 queue_work(dev->wq, &dev->cmd_complete_work);
2202 EXPORT_SYMBOL(pn533_recv_frame);
2204 /* Split the Tx skb into small chunks */
2205 static int pn533_fill_fragment_skbs(struct pn533 *dev, struct sk_buff *skb)
2207 struct sk_buff *frag;
2211 /* Remaining size */
2212 if (skb->len > PN533_CMD_DATAFRAME_MAXLEN)
2213 frag_size = PN533_CMD_DATAFRAME_MAXLEN;
2215 frag_size = skb->len;
2217 /* Allocate and reserve */
2218 frag = pn533_alloc_skb(dev, frag_size);
2220 skb_queue_purge(&dev->fragment_skb);
2224 if (!dev->tgt_mode) {
2225 /* Reserve the TG/MI byte */
2226 skb_reserve(frag, 1);
2229 if (frag_size == PN533_CMD_DATAFRAME_MAXLEN)
2230 *(u8 *)skb_push(frag, sizeof(u8)) =
2231 (PN533_CMD_MI_MASK | 1);
2233 *(u8 *)skb_push(frag, sizeof(u8)) = 1; /* TG */
2236 skb_put_data(frag, skb->data, frag_size);
2238 /* Reduce the size of incoming buffer */
2239 skb_pull(skb, frag_size);
2241 /* Add this to skb_queue */
2242 skb_queue_tail(&dev->fragment_skb, frag);
2244 } while (skb->len > 0);
2248 return skb_queue_len(&dev->fragment_skb);
2251 static int pn533_transceive(struct nfc_dev *nfc_dev,
2252 struct nfc_target *target, struct sk_buff *skb,
2253 data_exchange_cb_t cb, void *cb_context)
2255 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2256 struct pn533_data_exchange_arg *arg = NULL;
2259 if (!dev->tgt_active_prot) {
2261 "Can't exchange data if there is no active target\n");
2266 arg = kmalloc(sizeof(*arg), GFP_KERNEL);
2273 arg->cb_context = cb_context;
2275 switch (dev->device_type) {
2276 case PN533_DEVICE_PASORI:
2277 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
2278 rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU,
2280 pn533_data_exchange_complete,
2288 if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
2289 rc = pn533_fill_fragment_skbs(dev, skb);
2293 skb = skb_dequeue(&dev->fragment_skb);
2299 *(u8 *)skb_push(skb, sizeof(u8)) = 1; /* TG */
2302 rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE,
2303 skb, pn533_data_exchange_complete,
2309 if (rc < 0) /* rc from send_async */
2320 static int pn533_tm_send_complete(struct pn533 *dev, void *arg,
2321 struct sk_buff *resp)
2326 return PTR_ERR(resp);
2328 status = resp->data[0];
2330 /* Prepare for the next round */
2331 if (skb_queue_len(&dev->fragment_skb) > 0) {
2332 queue_work(dev->wq, &dev->mi_tm_tx_work);
2333 return -EINPROGRESS;
2335 dev_kfree_skb(resp);
2338 nfc_tm_deactivated(dev->nfc_dev);
2345 queue_work(dev->wq, &dev->tg_work);
2350 static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
2352 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2355 /* let's split in multiple chunks if size's too big */
2356 if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
2357 rc = pn533_fill_fragment_skbs(dev, skb);
2361 /* get the first skb */
2362 skb = skb_dequeue(&dev->fragment_skb);
2368 rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_META_DATA, skb,
2369 pn533_tm_send_complete, NULL);
2372 rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb,
2373 pn533_tm_send_complete, NULL);
2379 skb_queue_purge(&dev->fragment_skb);
2385 static void pn533_wq_mi_recv(struct work_struct *work)
2387 struct pn533 *dev = container_of(work, struct pn533, mi_rx_work);
2388 struct sk_buff *skb;
2391 skb = pn533_alloc_skb(dev, PN533_CMD_DATAEXCH_HEAD_LEN);
2395 switch (dev->device_type) {
2396 case PN533_DEVICE_PASORI:
2397 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
2398 rc = pn533_send_cmd_direct_async(dev,
2399 PN533_CMD_IN_COMM_THRU,
2401 pn533_data_exchange_complete,
2402 dev->cmd_complete_mi_arg);
2408 skb_put_u8(skb, 1); /*TG*/
2410 rc = pn533_send_cmd_direct_async(dev,
2411 PN533_CMD_IN_DATA_EXCHANGE,
2413 pn533_data_exchange_complete,
2414 dev->cmd_complete_mi_arg);
2419 if (rc == 0) /* success */
2423 "Error %d when trying to perform data_exchange\n", rc);
2426 kfree(dev->cmd_complete_mi_arg);
2429 dev->phy_ops->send_ack(dev, GFP_KERNEL);
2430 queue_work(dev->wq, &dev->cmd_work);
2433 static void pn533_wq_mi_send(struct work_struct *work)
2435 struct pn533 *dev = container_of(work, struct pn533, mi_tx_work);
2436 struct sk_buff *skb;
2439 /* Grab the first skb in the queue */
2440 skb = skb_dequeue(&dev->fragment_skb);
2442 if (skb == NULL) { /* No more data */
2443 /* Reset the queue for future use */
2444 skb_queue_head_init(&dev->fragment_skb);
2448 switch (dev->device_type) {
2449 case PN533_DEVICE_PASORI:
2450 if (dev->tgt_active_prot != NFC_PROTO_FELICA) {
2455 rc = pn533_send_cmd_direct_async(dev, PN533_CMD_IN_COMM_THRU,
2457 pn533_data_exchange_complete,
2458 dev->cmd_complete_dep_arg);
2463 /* Still some fragments? */
2464 rc = pn533_send_cmd_direct_async(dev,
2465 PN533_CMD_IN_DATA_EXCHANGE,
2467 pn533_data_exchange_complete,
2468 dev->cmd_complete_dep_arg);
2473 if (rc == 0) /* success */
2477 "Error %d when trying to perform data_exchange\n", rc);
2480 kfree(dev->cmd_complete_dep_arg);
2483 dev->phy_ops->send_ack(dev, GFP_KERNEL);
2484 queue_work(dev->wq, &dev->cmd_work);
2487 static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata,
2490 struct sk_buff *skb;
2491 struct sk_buff *resp;
2494 skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */
2496 skb = pn533_alloc_skb(dev, skb_len);
2500 skb_put_u8(skb, cfgitem);
2501 skb_put_data(skb, cfgdata, cfgdata_len);
2503 resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb);
2505 return PTR_ERR(resp);
2507 dev_kfree_skb(resp);
2511 static int pn533_get_firmware_version(struct pn533 *dev,
2512 struct pn533_fw_version *fv)
2514 struct sk_buff *skb;
2515 struct sk_buff *resp;
2517 skb = pn533_alloc_skb(dev, 0);
2521 resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb);
2523 return PTR_ERR(resp);
2525 fv->ic = resp->data[0];
2526 fv->ver = resp->data[1];
2527 fv->rev = resp->data[2];
2528 fv->support = resp->data[3];
2530 dev_kfree_skb(resp);
2534 static int pn533_pasori_fw_reset(struct pn533 *dev)
2536 struct sk_buff *skb;
2537 struct sk_buff *resp;
2539 skb = pn533_alloc_skb(dev, sizeof(u8));
2543 skb_put_u8(skb, 0x1);
2545 resp = pn533_send_cmd_sync(dev, 0x18, skb);
2547 return PTR_ERR(resp);
2549 dev_kfree_skb(resp);
2554 static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf)
2556 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2560 rf_field |= PN533_CFGITEM_RF_FIELD_AUTO_RFCA;
2562 rc = pn533_set_configuration(dev, PN533_CFGITEM_RF_FIELD,
2563 (u8 *)&rf_field, 1);
2565 nfc_err(dev->dev, "Error on setting RF field\n");
2572 static int pn532_sam_configuration(struct nfc_dev *nfc_dev)
2574 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2575 struct sk_buff *skb;
2576 struct sk_buff *resp;
2578 skb = pn533_alloc_skb(dev, 1);
2582 skb_put_u8(skb, 0x01);
2584 resp = pn533_send_cmd_sync(dev, PN533_CMD_SAM_CONFIGURATION, skb);
2586 return PTR_ERR(resp);
2588 dev_kfree_skb(resp);
2592 static int pn533_dev_up(struct nfc_dev *nfc_dev)
2594 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2597 if (dev->phy_ops->dev_up) {
2598 rc = dev->phy_ops->dev_up(dev);
2603 if ((dev->device_type == PN533_DEVICE_PN532) ||
2604 (dev->device_type == PN533_DEVICE_PN532_AUTOPOLL)) {
2605 rc = pn532_sam_configuration(nfc_dev);
2611 return pn533_rf_field(nfc_dev, 1);
2614 static int pn533_dev_down(struct nfc_dev *nfc_dev)
2616 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2619 ret = pn533_rf_field(nfc_dev, 0);
2620 if (dev->phy_ops->dev_down && !ret)
2621 ret = dev->phy_ops->dev_down(dev);
2626 static const struct nfc_ops pn533_nfc_ops = {
2627 .dev_up = pn533_dev_up,
2628 .dev_down = pn533_dev_down,
2629 .dep_link_up = pn533_dep_link_up,
2630 .dep_link_down = pn533_dep_link_down,
2631 .start_poll = pn533_start_poll,
2632 .stop_poll = pn533_stop_poll,
2633 .activate_target = pn533_activate_target,
2634 .deactivate_target = pn533_deactivate_target,
2635 .im_transceive = pn533_transceive,
2636 .tm_send = pn533_tm_send,
2639 static int pn533_setup(struct pn533 *dev)
2641 struct pn533_config_max_retries max_retries;
2642 struct pn533_config_timing timing;
2643 u8 pasori_cfg[3] = {0x08, 0x01, 0x08};
2646 switch (dev->device_type) {
2647 case PN533_DEVICE_STD:
2648 case PN533_DEVICE_PASORI:
2649 case PN533_DEVICE_ACR122U:
2650 case PN533_DEVICE_PN532:
2651 case PN533_DEVICE_PN532_AUTOPOLL:
2652 max_retries.mx_rty_atr = 0x2;
2653 max_retries.mx_rty_psl = 0x1;
2654 max_retries.mx_rty_passive_act =
2655 PN533_CONFIG_MAX_RETRIES_NO_RETRY;
2657 timing.rfu = PN533_CONFIG_TIMING_102;
2658 timing.atr_res_timeout = PN533_CONFIG_TIMING_102;
2659 timing.dep_timeout = PN533_CONFIG_TIMING_204;
2664 nfc_err(dev->dev, "Unknown device type %d\n",
2669 rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES,
2670 (u8 *)&max_retries, sizeof(max_retries));
2673 "Error on setting MAX_RETRIES config\n");
2678 rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING,
2679 (u8 *)&timing, sizeof(timing));
2681 nfc_err(dev->dev, "Error on setting RF timings\n");
2685 switch (dev->device_type) {
2686 case PN533_DEVICE_STD:
2687 case PN533_DEVICE_PN532:
2688 case PN533_DEVICE_PN532_AUTOPOLL:
2691 case PN533_DEVICE_PASORI:
2692 pn533_pasori_fw_reset(dev);
2694 rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI,
2698 "Error while settings PASORI config\n");
2702 pn533_pasori_fw_reset(dev);
2710 int pn533_finalize_setup(struct pn533 *dev)
2713 struct pn533_fw_version fw_ver;
2716 memset(&fw_ver, 0, sizeof(fw_ver));
2718 rc = pn533_get_firmware_version(dev, &fw_ver);
2720 nfc_err(dev->dev, "Unable to get FW version\n");
2724 nfc_info(dev->dev, "NXP PN5%02X firmware ver %d.%d now attached\n",
2725 fw_ver.ic, fw_ver.ver, fw_ver.rev);
2727 rc = pn533_setup(dev);
2733 EXPORT_SYMBOL_GPL(pn533_finalize_setup);
2735 struct pn533 *pn53x_common_init(u32 device_type,
2736 enum pn533_protocol_type protocol_type,
2738 struct pn533_phy_ops *phy_ops,
2739 struct pn533_frame_ops *fops,
2744 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2746 return ERR_PTR(-ENOMEM);
2749 priv->phy_ops = phy_ops;
2754 priv->ops = &pn533_std_frame_ops;
2756 priv->protocol_type = protocol_type;
2757 priv->device_type = device_type;
2759 mutex_init(&priv->cmd_lock);
2761 INIT_WORK(&priv->cmd_work, pn533_wq_cmd);
2762 INIT_WORK(&priv->cmd_complete_work, pn533_wq_cmd_complete);
2763 INIT_WORK(&priv->mi_rx_work, pn533_wq_mi_recv);
2764 INIT_WORK(&priv->mi_tx_work, pn533_wq_mi_send);
2765 INIT_WORK(&priv->tg_work, pn533_wq_tg_get_data);
2766 INIT_WORK(&priv->mi_tm_rx_work, pn533_wq_tm_mi_recv);
2767 INIT_WORK(&priv->mi_tm_tx_work, pn533_wq_tm_mi_send);
2768 INIT_DELAYED_WORK(&priv->poll_work, pn533_wq_poll);
2769 INIT_WORK(&priv->rf_work, pn533_wq_rf);
2770 priv->wq = alloc_ordered_workqueue("pn533", 0);
2771 if (priv->wq == NULL)
2774 timer_setup(&priv->listen_timer, pn533_listen_mode_timer, 0);
2776 skb_queue_head_init(&priv->resp_q);
2777 skb_queue_head_init(&priv->fragment_skb);
2779 INIT_LIST_HEAD(&priv->cmd_queue);
2784 return ERR_PTR(-ENOMEM);
2786 EXPORT_SYMBOL_GPL(pn53x_common_init);
2788 void pn53x_common_clean(struct pn533 *priv)
2790 struct pn533_cmd *cmd, *n;
2792 /* delete the timer before cleanup the worker */
2793 del_timer_sync(&priv->listen_timer);
2795 flush_delayed_work(&priv->poll_work);
2796 destroy_workqueue(priv->wq);
2798 skb_queue_purge(&priv->resp_q);
2800 list_for_each_entry_safe(cmd, n, &priv->cmd_queue, queue) {
2801 list_del(&cmd->queue);
2807 EXPORT_SYMBOL_GPL(pn53x_common_clean);
2809 int pn532_i2c_nfc_alloc(struct pn533 *priv, u32 protocols,
2810 struct device *parent)
2812 priv->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols,
2813 priv->ops->tx_header_len +
2814 PN533_CMD_DATAEXCH_HEAD_LEN,
2815 priv->ops->tx_tail_len);
2819 nfc_set_parent_dev(priv->nfc_dev, parent);
2820 nfc_set_drvdata(priv->nfc_dev, priv);
2823 EXPORT_SYMBOL_GPL(pn532_i2c_nfc_alloc);
2825 int pn53x_register_nfc(struct pn533 *priv, u32 protocols,
2826 struct device *parent)
2830 rc = pn532_i2c_nfc_alloc(priv, protocols, parent);
2834 rc = nfc_register_device(priv->nfc_dev);
2836 nfc_free_device(priv->nfc_dev);
2840 EXPORT_SYMBOL_GPL(pn53x_register_nfc);
2842 void pn53x_unregister_nfc(struct pn533 *priv)
2844 nfc_unregister_device(priv->nfc_dev);
2845 nfc_free_device(priv->nfc_dev);
2847 EXPORT_SYMBOL_GPL(pn53x_unregister_nfc);
2849 MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>");
2850 MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
2851 MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>");
2852 MODULE_DESCRIPTION("PN533 driver ver " VERSION);
2853 MODULE_VERSION(VERSION);
2854 MODULE_LICENSE("GPL");