2 * Copyright (C) 2012 Intel Corporation. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the
16 * Free Software Foundation, Inc.,
17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 #define pr_fmt(fmt) "hci: %s: " fmt, __func__
22 #include <linux/init.h>
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/nfc.h>
27 #include <net/nfc/nfc.h>
28 #include <net/nfc/hci.h>
29 #include <net/nfc/llc.h>
33 /* Largest headroom needed for outgoing HCI commands */
34 #define HCI_CMDS_HEADROOM 1
36 int nfc_hci_result_to_errno(u8 result)
41 case NFC_HCI_ANY_E_REG_PAR_UNKNOWN:
43 case NFC_HCI_ANY_E_TIMEOUT:
49 EXPORT_SYMBOL(nfc_hci_result_to_errno);
51 static void nfc_hci_msg_tx_work(struct work_struct *work)
53 struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
59 mutex_lock(&hdev->msg_tx_mutex);
60 if (hdev->shutting_down)
63 if (hdev->cmd_pending_msg) {
64 if (timer_pending(&hdev->cmd_timer) == 0) {
65 if (hdev->cmd_pending_msg->cb)
66 hdev->cmd_pending_msg->cb(hdev->
71 kfree(hdev->cmd_pending_msg);
72 hdev->cmd_pending_msg = NULL;
79 if (list_empty(&hdev->msg_tx_queue))
82 msg = list_first_entry(&hdev->msg_tx_queue, struct hci_msg, msg_l);
83 list_del(&msg->msg_l);
85 pr_debug("msg_tx_queue has a cmd to send\n");
86 while ((skb = skb_dequeue(&msg->msg_frags)) != NULL) {
87 r = nfc_llc_xmit_from_hci(hdev->llc, skb);
90 skb_queue_purge(&msg->msg_frags);
92 msg->cb(msg->cb_context, NULL, r);
101 if (msg->wait_response == false) {
106 hdev->cmd_pending_msg = msg;
107 mod_timer(&hdev->cmd_timer, jiffies +
108 msecs_to_jiffies(hdev->cmd_pending_msg->completion_delay));
111 mutex_unlock(&hdev->msg_tx_mutex);
114 static void nfc_hci_msg_rx_work(struct work_struct *work)
116 struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
119 struct hcp_message *message;
124 while ((skb = skb_dequeue(&hdev->msg_rx_queue)) != NULL) {
126 skb_pull(skb, NFC_HCI_HCP_PACKET_HEADER_LEN);
127 message = (struct hcp_message *)skb->data;
128 type = HCP_MSG_GET_TYPE(message->header);
129 instruction = HCP_MSG_GET_CMD(message->header);
130 skb_pull(skb, NFC_HCI_HCP_MESSAGE_HEADER_LEN);
132 nfc_hci_hcp_message_rx(hdev, pipe, type, instruction, skb);
136 static void __nfc_hci_cmd_completion(struct nfc_hci_dev *hdev, int err,
139 del_timer_sync(&hdev->cmd_timer);
141 if (hdev->cmd_pending_msg->cb)
142 hdev->cmd_pending_msg->cb(hdev->cmd_pending_msg->cb_context,
147 kfree(hdev->cmd_pending_msg);
148 hdev->cmd_pending_msg = NULL;
150 schedule_work(&hdev->msg_tx_work);
153 void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
156 mutex_lock(&hdev->msg_tx_mutex);
158 if (hdev->cmd_pending_msg == NULL) {
163 __nfc_hci_cmd_completion(hdev, nfc_hci_result_to_errno(result), skb);
166 mutex_unlock(&hdev->msg_tx_mutex);
169 void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
175 u32 nfc_hci_sak_to_protocol(u8 sak)
177 switch (NFC_HCI_TYPE_A_SEL_PROT(sak)) {
178 case NFC_HCI_TYPE_A_SEL_PROT_MIFARE:
179 return NFC_PROTO_MIFARE_MASK;
180 case NFC_HCI_TYPE_A_SEL_PROT_ISO14443:
181 return NFC_PROTO_ISO14443_MASK;
182 case NFC_HCI_TYPE_A_SEL_PROT_DEP:
183 return NFC_PROTO_NFC_DEP_MASK;
184 case NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP:
185 return NFC_PROTO_ISO14443_MASK | NFC_PROTO_NFC_DEP_MASK;
190 EXPORT_SYMBOL(nfc_hci_sak_to_protocol);
192 int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
194 struct nfc_target *targets;
195 struct sk_buff *atqa_skb = NULL;
196 struct sk_buff *sak_skb = NULL;
197 struct sk_buff *uid_skb = NULL;
200 pr_debug("from gate %d\n", gate);
202 targets = kzalloc(sizeof(struct nfc_target), GFP_KERNEL);
207 case NFC_HCI_RF_READER_A_GATE:
208 r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
209 NFC_HCI_RF_READER_A_ATQA, &atqa_skb);
213 r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
214 NFC_HCI_RF_READER_A_SAK, &sak_skb);
218 if (atqa_skb->len != 2 || sak_skb->len != 1) {
223 targets->supported_protocols =
224 nfc_hci_sak_to_protocol(sak_skb->data[0]);
225 if (targets->supported_protocols == 0xffffffff) {
230 targets->sens_res = be16_to_cpu(*(u16 *)atqa_skb->data);
231 targets->sel_res = sak_skb->data[0];
233 r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
234 NFC_HCI_RF_READER_A_UID, &uid_skb);
238 if (uid_skb->len == 0 || uid_skb->len > NFC_NFCID1_MAXSIZE) {
243 memcpy(targets->nfcid1, uid_skb->data, uid_skb->len);
244 targets->nfcid1_len = uid_skb->len;
246 if (hdev->ops->complete_target_discovered) {
247 r = hdev->ops->complete_target_discovered(hdev, gate,
253 case NFC_HCI_RF_READER_B_GATE:
254 targets->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
257 if (hdev->ops->target_from_gate)
258 r = hdev->ops->target_from_gate(hdev, gate, targets);
264 if (hdev->ops->complete_target_discovered) {
265 r = hdev->ops->complete_target_discovered(hdev, gate,
273 /* if driver set the new gate, we will skip the old one */
274 if (targets->hci_reader_gate == 0x00)
275 targets->hci_reader_gate = gate;
277 r = nfc_targets_found(hdev->ndev, targets, 1);
287 EXPORT_SYMBOL(nfc_hci_target_discovered);
289 void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
293 u8 gate = nfc_hci_pipe2gate(hdev, pipe);
296 pr_err("Discarded event %x to unopened pipe %x\n", event, pipe);
301 case NFC_HCI_EVT_TARGET_DISCOVERED:
302 if (skb->len < 1) { /* no status data? */
307 if (skb->data[0] == 3) {
308 /* TODO: Multiple targets in field, none activated
309 * poll is supposedly stopped, but there is no
310 * single target to activate, so nothing to report
312 * if we need to restart poll, we must save the
313 * protocols from the initial poll and reuse here.
317 if (skb->data[0] != 0) {
322 r = nfc_hci_target_discovered(hdev, gate);
325 if (hdev->ops->event_received) {
326 hdev->ops->event_received(hdev, gate, event, skb);
337 /* TODO: There was an error dispatching the event,
338 * how to propagate up to nfc core?
343 static void nfc_hci_cmd_timeout(unsigned long data)
345 struct nfc_hci_dev *hdev = (struct nfc_hci_dev *)data;
347 schedule_work(&hdev->msg_tx_work);
350 static int hci_dev_connect_gates(struct nfc_hci_dev *hdev, u8 gate_count,
351 struct nfc_hci_gate *gates)
354 while (gate_count--) {
355 r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
356 gates->gate, gates->pipe);
365 static int hci_dev_session_init(struct nfc_hci_dev *hdev)
367 struct sk_buff *skb = NULL;
370 if (hdev->init_data.gates[0].gate != NFC_HCI_ADMIN_GATE)
373 r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
374 hdev->init_data.gates[0].gate,
375 hdev->init_data.gates[0].pipe);
379 r = nfc_hci_get_param(hdev, NFC_HCI_ADMIN_GATE,
380 NFC_HCI_ADMIN_SESSION_IDENTITY, &skb);
384 if (skb->len && skb->len == strlen(hdev->init_data.session_id))
385 if (memcmp(hdev->init_data.session_id, skb->data,
387 /* TODO ELa: restore gate<->pipe table from
389 * note: it doesn't seem possible to get the chip
390 * currently open gate/pipe table.
391 * It is only possible to obtain the supported
396 * For now, always do a full initialization */
399 r = nfc_hci_disconnect_all_gates(hdev);
403 r = hci_dev_connect_gates(hdev, hdev->init_data.gate_count,
404 hdev->init_data.gates);
408 r = nfc_hci_set_param(hdev, NFC_HCI_ADMIN_GATE,
409 NFC_HCI_ADMIN_SESSION_IDENTITY,
410 hdev->init_data.session_id,
411 strlen(hdev->init_data.session_id));
416 nfc_hci_disconnect_all_gates(hdev);
424 static int hci_dev_version(struct nfc_hci_dev *hdev)
429 r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
430 NFC_HCI_ID_MGMT_VERSION_SW, &skb);
431 if (r == -EOPNOTSUPP) {
432 pr_info("Software/Hardware info not available\n");
443 hdev->sw_romlib = (skb->data[0] & 0xf0) >> 4;
444 hdev->sw_patch = skb->data[0] & 0x0f;
445 hdev->sw_flashlib_major = skb->data[1];
446 hdev->sw_flashlib_minor = skb->data[2];
450 r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
451 NFC_HCI_ID_MGMT_VERSION_HW, &skb);
460 hdev->hw_derivative = (skb->data[0] & 0xe0) >> 5;
461 hdev->hw_version = skb->data[0] & 0x1f;
462 hdev->hw_mpw = (skb->data[1] & 0xc0) >> 6;
463 hdev->hw_software = skb->data[1] & 0x3f;
464 hdev->hw_bsid = skb->data[2];
468 pr_info("SOFTWARE INFO:\n");
469 pr_info("RomLib : %d\n", hdev->sw_romlib);
470 pr_info("Patch : %d\n", hdev->sw_patch);
471 pr_info("FlashLib Major : %d\n", hdev->sw_flashlib_major);
472 pr_info("FlashLib Minor : %d\n", hdev->sw_flashlib_minor);
473 pr_info("HARDWARE INFO:\n");
474 pr_info("Derivative : %d\n", hdev->hw_derivative);
475 pr_info("HW Version : %d\n", hdev->hw_version);
476 pr_info("#MPW : %d\n", hdev->hw_mpw);
477 pr_info("Software : %d\n", hdev->hw_software);
478 pr_info("BSID Version : %d\n", hdev->hw_bsid);
483 static int hci_dev_up(struct nfc_dev *nfc_dev)
485 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
488 if (hdev->ops->open) {
489 r = hdev->ops->open(hdev);
494 r = nfc_llc_start(hdev->llc);
498 r = hci_dev_session_init(hdev);
502 r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
503 NFC_HCI_EVT_END_OPERATION, NULL, 0);
507 if (hdev->ops->hci_ready) {
508 r = hdev->ops->hci_ready(hdev);
513 r = hci_dev_version(hdev);
520 nfc_llc_stop(hdev->llc);
523 if (hdev->ops->close)
524 hdev->ops->close(hdev);
529 static int hci_dev_down(struct nfc_dev *nfc_dev)
531 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
533 nfc_llc_stop(hdev->llc);
535 if (hdev->ops->close)
536 hdev->ops->close(hdev);
538 memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
543 static int hci_start_poll(struct nfc_dev *nfc_dev,
544 u32 im_protocols, u32 tm_protocols)
546 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
548 if (hdev->ops->start_poll)
549 return hdev->ops->start_poll(hdev, im_protocols, tm_protocols);
551 return nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
552 NFC_HCI_EVT_READER_REQUESTED,
556 static void hci_stop_poll(struct nfc_dev *nfc_dev)
558 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
560 nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
561 NFC_HCI_EVT_END_OPERATION, NULL, 0);
564 static int hci_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
565 __u8 comm_mode, __u8 *gb, size_t gb_len)
567 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
569 if (hdev->ops->dep_link_up)
570 return hdev->ops->dep_link_up(hdev, target, comm_mode,
576 static int hci_dep_link_down(struct nfc_dev *nfc_dev)
578 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
580 if (hdev->ops->dep_link_down)
581 return hdev->ops->dep_link_down(hdev);
586 static int hci_activate_target(struct nfc_dev *nfc_dev,
587 struct nfc_target *target, u32 protocol)
592 static void hci_deactivate_target(struct nfc_dev *nfc_dev,
593 struct nfc_target *target)
597 #define HCI_CB_TYPE_TRANSCEIVE 1
599 static void hci_transceive_cb(void *context, struct sk_buff *skb, int err)
601 struct nfc_hci_dev *hdev = context;
603 switch (hdev->async_cb_type) {
604 case HCI_CB_TYPE_TRANSCEIVE:
606 * TODO: Check RF Error indicator to make sure data is valid.
607 * It seems that HCI cmd can complete without error, but data
608 * can be invalid if an RF error occured? Ignore for now.
611 skb_trim(skb, skb->len - 1); /* RF Err ind */
613 hdev->async_cb(hdev->async_cb_context, skb, err);
622 static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
623 struct sk_buff *skb, data_exchange_cb_t cb,
626 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
629 pr_debug("target_idx=%d\n", target->idx);
631 switch (target->hci_reader_gate) {
632 case NFC_HCI_RF_READER_A_GATE:
633 case NFC_HCI_RF_READER_B_GATE:
634 if (hdev->ops->im_transceive) {
635 r = hdev->ops->im_transceive(hdev, target, skb, cb,
637 if (r <= 0) /* handled */
641 *skb_push(skb, 1) = 0; /* CTR, see spec:10.2.2.1 */
643 hdev->async_cb_type = HCI_CB_TYPE_TRANSCEIVE;
645 hdev->async_cb_context = cb_context;
647 r = nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
648 NFC_HCI_WR_XCHG_DATA, skb->data,
649 skb->len, hci_transceive_cb, hdev);
652 if (hdev->ops->im_transceive) {
653 r = hdev->ops->im_transceive(hdev, target, skb, cb,
668 static int hci_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
670 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
672 if (hdev->ops->tm_send)
673 return hdev->ops->tm_send(hdev, skb);
678 static int hci_check_presence(struct nfc_dev *nfc_dev,
679 struct nfc_target *target)
681 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
683 if (hdev->ops->check_presence)
684 return hdev->ops->check_presence(hdev, target);
689 static void nfc_hci_failure(struct nfc_hci_dev *hdev, int err)
691 mutex_lock(&hdev->msg_tx_mutex);
693 if (hdev->cmd_pending_msg == NULL) {
694 nfc_driver_failure(hdev->ndev, err);
698 __nfc_hci_cmd_completion(hdev, err, NULL);
701 mutex_unlock(&hdev->msg_tx_mutex);
704 static void nfc_hci_llc_failure(struct nfc_hci_dev *hdev, int err)
706 nfc_hci_failure(hdev, err);
709 static void nfc_hci_recv_from_llc(struct nfc_hci_dev *hdev, struct sk_buff *skb)
711 struct hcp_packet *packet;
714 struct sk_buff *hcp_skb;
716 struct sk_buff *frag_skb;
719 packet = (struct hcp_packet *)skb->data;
720 if ((packet->header & ~NFC_HCI_FRAGMENT) == 0) {
721 skb_queue_tail(&hdev->rx_hcp_frags, skb);
725 /* it's the last fragment. Does it need re-aggregation? */
726 if (skb_queue_len(&hdev->rx_hcp_frags)) {
727 pipe = packet->header & NFC_HCI_FRAGMENT;
728 skb_queue_tail(&hdev->rx_hcp_frags, skb);
731 skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) {
732 msg_len += (frag_skb->len -
733 NFC_HCI_HCP_PACKET_HEADER_LEN);
736 hcp_skb = nfc_alloc_recv_skb(NFC_HCI_HCP_PACKET_HEADER_LEN +
737 msg_len, GFP_KERNEL);
738 if (hcp_skb == NULL) {
739 nfc_hci_failure(hdev, -ENOMEM);
743 *skb_put(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN) = pipe;
745 skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) {
746 msg_len = frag_skb->len - NFC_HCI_HCP_PACKET_HEADER_LEN;
747 memcpy(skb_put(hcp_skb, msg_len),
748 frag_skb->data + NFC_HCI_HCP_PACKET_HEADER_LEN,
752 skb_queue_purge(&hdev->rx_hcp_frags);
754 packet->header &= NFC_HCI_FRAGMENT;
758 /* if this is a response, dispatch immediately to
759 * unblock waiting cmd context. Otherwise, enqueue to dispatch
760 * in separate context where handler can also execute command.
762 packet = (struct hcp_packet *)hcp_skb->data;
763 type = HCP_MSG_GET_TYPE(packet->message.header);
764 if (type == NFC_HCI_HCP_RESPONSE) {
765 pipe = packet->header;
766 instruction = HCP_MSG_GET_CMD(packet->message.header);
767 skb_pull(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN +
768 NFC_HCI_HCP_MESSAGE_HEADER_LEN);
769 nfc_hci_hcp_message_rx(hdev, pipe, type, instruction, hcp_skb);
771 skb_queue_tail(&hdev->msg_rx_queue, hcp_skb);
772 schedule_work(&hdev->msg_rx_work);
776 static struct nfc_ops hci_nfc_ops = {
777 .dev_up = hci_dev_up,
778 .dev_down = hci_dev_down,
779 .start_poll = hci_start_poll,
780 .stop_poll = hci_stop_poll,
781 .dep_link_up = hci_dep_link_up,
782 .dep_link_down = hci_dep_link_down,
783 .activate_target = hci_activate_target,
784 .deactivate_target = hci_deactivate_target,
785 .im_transceive = hci_transceive,
786 .tm_send = hci_tm_send,
787 .check_presence = hci_check_presence,
790 struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
791 struct nfc_hci_init_data *init_data,
793 const char *llc_name,
796 int max_link_payload)
798 struct nfc_hci_dev *hdev;
800 if (ops->xmit == NULL)
806 hdev = kzalloc(sizeof(struct nfc_hci_dev), GFP_KERNEL);
810 hdev->llc = nfc_llc_allocate(llc_name, hdev, ops->xmit,
811 nfc_hci_recv_from_llc, tx_headroom,
812 tx_tailroom, nfc_hci_llc_failure);
813 if (hdev->llc == NULL) {
818 hdev->ndev = nfc_allocate_device(&hci_nfc_ops, protocols,
819 tx_headroom + HCI_CMDS_HEADROOM,
822 nfc_llc_free(hdev->llc);
828 hdev->max_data_link_payload = max_link_payload;
829 hdev->init_data = *init_data;
831 nfc_set_drvdata(hdev->ndev, hdev);
833 memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
837 EXPORT_SYMBOL(nfc_hci_allocate_device);
839 void nfc_hci_free_device(struct nfc_hci_dev *hdev)
841 nfc_free_device(hdev->ndev);
842 nfc_llc_free(hdev->llc);
845 EXPORT_SYMBOL(nfc_hci_free_device);
847 int nfc_hci_register_device(struct nfc_hci_dev *hdev)
849 mutex_init(&hdev->msg_tx_mutex);
851 INIT_LIST_HEAD(&hdev->msg_tx_queue);
853 INIT_WORK(&hdev->msg_tx_work, nfc_hci_msg_tx_work);
855 init_timer(&hdev->cmd_timer);
856 hdev->cmd_timer.data = (unsigned long)hdev;
857 hdev->cmd_timer.function = nfc_hci_cmd_timeout;
859 skb_queue_head_init(&hdev->rx_hcp_frags);
861 INIT_WORK(&hdev->msg_rx_work, nfc_hci_msg_rx_work);
863 skb_queue_head_init(&hdev->msg_rx_queue);
865 return nfc_register_device(hdev->ndev);
867 EXPORT_SYMBOL(nfc_hci_register_device);
869 void nfc_hci_unregister_device(struct nfc_hci_dev *hdev)
871 struct hci_msg *msg, *n;
873 mutex_lock(&hdev->msg_tx_mutex);
875 if (hdev->cmd_pending_msg) {
876 if (hdev->cmd_pending_msg->cb)
877 hdev->cmd_pending_msg->cb(
878 hdev->cmd_pending_msg->cb_context,
880 kfree(hdev->cmd_pending_msg);
881 hdev->cmd_pending_msg = NULL;
884 hdev->shutting_down = true;
886 mutex_unlock(&hdev->msg_tx_mutex);
888 del_timer_sync(&hdev->cmd_timer);
889 cancel_work_sync(&hdev->msg_tx_work);
891 cancel_work_sync(&hdev->msg_rx_work);
893 nfc_unregister_device(hdev->ndev);
895 skb_queue_purge(&hdev->rx_hcp_frags);
896 skb_queue_purge(&hdev->msg_rx_queue);
898 list_for_each_entry_safe(msg, n, &hdev->msg_tx_queue, msg_l) {
899 list_del(&msg->msg_l);
900 skb_queue_purge(&msg->msg_frags);
904 EXPORT_SYMBOL(nfc_hci_unregister_device);
906 void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata)
908 hdev->clientdata = clientdata;
910 EXPORT_SYMBOL(nfc_hci_set_clientdata);
912 void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev)
914 return hdev->clientdata;
916 EXPORT_SYMBOL(nfc_hci_get_clientdata);
918 void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err)
920 nfc_hci_failure(hdev, err);
922 EXPORT_SYMBOL(nfc_hci_driver_failure);
924 void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
926 nfc_llc_rcv_from_drv(hdev->llc, skb);
928 EXPORT_SYMBOL(nfc_hci_recv_frame);
930 static int __init nfc_hci_init(void)
932 return nfc_llc_init();
935 static void __exit nfc_hci_exit(void)
940 subsys_initcall(nfc_hci_init);
941 module_exit(nfc_hci_exit);
943 MODULE_LICENSE("GPL");
944 MODULE_DESCRIPTION("NFC HCI Core");