2 * Copyright (C) 2011 Instituto Nokia de Tecnologia
5 * Lauro Ramos Venancio <lauro.venancio@openbossa.org>
6 * Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the
20 * Free Software Foundation, Inc.,
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
26 #include <linux/init.h>
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/slab.h>
30 #include <linux/rfkill.h>
31 #include <linux/nfc.h>
33 #include <net/genetlink.h>
39 #define NFC_CHECK_PRES_FREQ_MS 2000
41 int nfc_devlist_generation
;
42 DEFINE_MUTEX(nfc_devlist_mutex
);
44 /* NFC device ID bitmap */
45 static DEFINE_IDA(nfc_index_ida
);
47 int nfc_fw_upload(struct nfc_dev
*dev
, const char *firmware_name
)
51 pr_debug("%s do firmware %s\n", dev_name(&dev
->dev
), firmware_name
);
53 device_lock(&dev
->dev
);
55 if (!device_is_registered(&dev
->dev
)) {
65 if (!dev
->ops
->fw_upload
) {
70 dev
->fw_upload_in_progress
= true;
71 rc
= dev
->ops
->fw_upload(dev
, firmware_name
);
73 dev
->fw_upload_in_progress
= false;
76 device_unlock(&dev
->dev
);
80 int nfc_fw_upload_done(struct nfc_dev
*dev
, const char *firmware_name
)
82 dev
->fw_upload_in_progress
= false;
84 return nfc_genl_fw_upload_done(dev
, firmware_name
);
86 EXPORT_SYMBOL(nfc_fw_upload_done
);
89 * nfc_dev_up - turn on the NFC device
91 * @dev: The nfc device to be turned on
93 * The device remains up until the nfc_dev_down function is called.
95 int nfc_dev_up(struct nfc_dev
*dev
)
99 pr_debug("dev_name=%s\n", dev_name(&dev
->dev
));
101 device_lock(&dev
->dev
);
103 if (dev
->rfkill
&& rfkill_blocked(dev
->rfkill
)) {
108 if (!device_is_registered(&dev
->dev
)) {
113 if (dev
->fw_upload_in_progress
) {
123 if (dev
->ops
->dev_up
)
124 rc
= dev
->ops
->dev_up(dev
);
129 /* We have to enable the device before discovering SEs */
130 if (dev
->ops
->discover_se
) {
131 rc
= dev
->ops
->discover_se(dev
);
133 pr_warn("SE discovery failed\n");
137 device_unlock(&dev
->dev
);
142 * nfc_dev_down - turn off the NFC device
144 * @dev: The nfc device to be turned off
146 int nfc_dev_down(struct nfc_dev
*dev
)
150 pr_debug("dev_name=%s\n", dev_name(&dev
->dev
));
152 device_lock(&dev
->dev
);
154 if (!device_is_registered(&dev
->dev
)) {
164 if (dev
->polling
|| dev
->active_target
) {
169 if (dev
->ops
->dev_down
)
170 dev
->ops
->dev_down(dev
);
175 device_unlock(&dev
->dev
);
179 static int nfc_rfkill_set_block(void *data
, bool blocked
)
181 struct nfc_dev
*dev
= data
;
183 pr_debug("%s blocked %d", dev_name(&dev
->dev
), blocked
);
193 static const struct rfkill_ops nfc_rfkill_ops
= {
194 .set_block
= nfc_rfkill_set_block
,
198 * nfc_start_poll - start polling for nfc targets
200 * @dev: The nfc device that must start polling
201 * @protocols: bitset of nfc protocols that must be used for polling
203 * The device remains polling for targets until a target is found or
204 * the nfc_stop_poll function is called.
206 int nfc_start_poll(struct nfc_dev
*dev
, u32 im_protocols
, u32 tm_protocols
)
210 pr_debug("dev_name %s initiator protocols 0x%x target protocols 0x%x\n",
211 dev_name(&dev
->dev
), im_protocols
, tm_protocols
);
213 if (!im_protocols
&& !tm_protocols
)
216 device_lock(&dev
->dev
);
218 if (!device_is_registered(&dev
->dev
)) {
233 rc
= dev
->ops
->start_poll(dev
, im_protocols
, tm_protocols
);
236 dev
->rf_mode
= NFC_RF_NONE
;
240 device_unlock(&dev
->dev
);
245 * nfc_stop_poll - stop polling for nfc targets
247 * @dev: The nfc device that must stop polling
249 int nfc_stop_poll(struct nfc_dev
*dev
)
253 pr_debug("dev_name=%s\n", dev_name(&dev
->dev
));
255 device_lock(&dev
->dev
);
257 if (!device_is_registered(&dev
->dev
)) {
267 dev
->ops
->stop_poll(dev
);
268 dev
->polling
= false;
269 dev
->rf_mode
= NFC_RF_NONE
;
272 device_unlock(&dev
->dev
);
276 static struct nfc_target
*nfc_find_target(struct nfc_dev
*dev
, u32 target_idx
)
280 if (dev
->n_targets
== 0)
283 for (i
= 0; i
< dev
->n_targets
; i
++) {
284 if (dev
->targets
[i
].idx
== target_idx
)
285 return &dev
->targets
[i
];
291 int nfc_dep_link_up(struct nfc_dev
*dev
, int target_index
, u8 comm_mode
)
296 struct nfc_target
*target
;
298 pr_debug("dev_name=%s comm %d\n", dev_name(&dev
->dev
), comm_mode
);
300 if (!dev
->ops
->dep_link_up
)
303 device_lock(&dev
->dev
);
305 if (!device_is_registered(&dev
->dev
)) {
310 if (dev
->dep_link_up
== true) {
315 gb
= nfc_llcp_general_bytes(dev
, &gb_len
);
316 if (gb_len
> NFC_MAX_GT_LEN
) {
321 target
= nfc_find_target(dev
, target_index
);
322 if (target
== NULL
) {
327 rc
= dev
->ops
->dep_link_up(dev
, target
, comm_mode
, gb
, gb_len
);
329 dev
->active_target
= target
;
330 dev
->rf_mode
= NFC_RF_INITIATOR
;
334 device_unlock(&dev
->dev
);
338 int nfc_dep_link_down(struct nfc_dev
*dev
)
342 pr_debug("dev_name=%s\n", dev_name(&dev
->dev
));
344 if (!dev
->ops
->dep_link_down
)
347 device_lock(&dev
->dev
);
349 if (!device_is_registered(&dev
->dev
)) {
354 if (dev
->dep_link_up
== false) {
359 rc
= dev
->ops
->dep_link_down(dev
);
361 dev
->dep_link_up
= false;
362 dev
->active_target
= NULL
;
363 dev
->rf_mode
= NFC_RF_NONE
;
364 nfc_llcp_mac_is_down(dev
);
365 nfc_genl_dep_link_down_event(dev
);
369 device_unlock(&dev
->dev
);
374 int nfc_dep_link_is_up(struct nfc_dev
*dev
, u32 target_idx
,
375 u8 comm_mode
, u8 rf_mode
)
377 dev
->dep_link_up
= true;
379 nfc_llcp_mac_is_up(dev
, target_idx
, comm_mode
, rf_mode
);
381 return nfc_genl_dep_link_up_event(dev
, target_idx
, comm_mode
, rf_mode
);
383 EXPORT_SYMBOL(nfc_dep_link_is_up
);
386 * nfc_activate_target - prepare the target for data exchange
388 * @dev: The nfc device that found the target
389 * @target_idx: index of the target that must be activated
390 * @protocol: nfc protocol that will be used for data exchange
392 int nfc_activate_target(struct nfc_dev
*dev
, u32 target_idx
, u32 protocol
)
395 struct nfc_target
*target
;
397 pr_debug("dev_name=%s target_idx=%u protocol=%u\n",
398 dev_name(&dev
->dev
), target_idx
, protocol
);
400 device_lock(&dev
->dev
);
402 if (!device_is_registered(&dev
->dev
)) {
407 if (dev
->active_target
) {
412 target
= nfc_find_target(dev
, target_idx
);
413 if (target
== NULL
) {
418 rc
= dev
->ops
->activate_target(dev
, target
, protocol
);
420 dev
->active_target
= target
;
421 dev
->rf_mode
= NFC_RF_INITIATOR
;
423 if (dev
->ops
->check_presence
&& !dev
->shutting_down
)
424 mod_timer(&dev
->check_pres_timer
, jiffies
+
425 msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS
));
429 device_unlock(&dev
->dev
);
434 * nfc_deactivate_target - deactivate a nfc target
436 * @dev: The nfc device that found the target
437 * @target_idx: index of the target that must be deactivated
439 int nfc_deactivate_target(struct nfc_dev
*dev
, u32 target_idx
)
443 pr_debug("dev_name=%s target_idx=%u\n",
444 dev_name(&dev
->dev
), target_idx
);
446 device_lock(&dev
->dev
);
448 if (!device_is_registered(&dev
->dev
)) {
453 if (dev
->active_target
== NULL
) {
458 if (dev
->active_target
->idx
!= target_idx
) {
463 if (dev
->ops
->check_presence
)
464 del_timer_sync(&dev
->check_pres_timer
);
466 dev
->ops
->deactivate_target(dev
, dev
->active_target
);
467 dev
->active_target
= NULL
;
470 device_unlock(&dev
->dev
);
475 * nfc_data_exchange - transceive data
477 * @dev: The nfc device that found the target
478 * @target_idx: index of the target
479 * @skb: data to be sent
480 * @cb: callback called when the response is received
481 * @cb_context: parameter for the callback function
483 * The user must wait for the callback before calling this function again.
485 int nfc_data_exchange(struct nfc_dev
*dev
, u32 target_idx
, struct sk_buff
*skb
,
486 data_exchange_cb_t cb
, void *cb_context
)
490 pr_debug("dev_name=%s target_idx=%u skb->len=%u\n",
491 dev_name(&dev
->dev
), target_idx
, skb
->len
);
493 device_lock(&dev
->dev
);
495 if (!device_is_registered(&dev
->dev
)) {
501 if (dev
->rf_mode
== NFC_RF_INITIATOR
&& dev
->active_target
!= NULL
) {
502 if (dev
->active_target
->idx
!= target_idx
) {
508 if (dev
->ops
->check_presence
)
509 del_timer_sync(&dev
->check_pres_timer
);
511 rc
= dev
->ops
->im_transceive(dev
, dev
->active_target
, skb
, cb
,
514 if (!rc
&& dev
->ops
->check_presence
&& !dev
->shutting_down
)
515 mod_timer(&dev
->check_pres_timer
, jiffies
+
516 msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS
));
517 } else if (dev
->rf_mode
== NFC_RF_TARGET
&& dev
->ops
->tm_send
!= NULL
) {
518 rc
= dev
->ops
->tm_send(dev
, skb
);
527 device_unlock(&dev
->dev
);
531 int nfc_set_remote_general_bytes(struct nfc_dev
*dev
, u8
*gb
, u8 gb_len
)
533 pr_debug("dev_name=%s gb_len=%d\n", dev_name(&dev
->dev
), gb_len
);
535 if (gb_len
> NFC_MAX_GT_LEN
)
538 return nfc_llcp_set_remote_gb(dev
, gb
, gb_len
);
540 EXPORT_SYMBOL(nfc_set_remote_general_bytes
);
542 u8
*nfc_get_local_general_bytes(struct nfc_dev
*dev
, size_t *gb_len
)
544 pr_debug("dev_name=%s\n", dev_name(&dev
->dev
));
546 return nfc_llcp_general_bytes(dev
, gb_len
);
548 EXPORT_SYMBOL(nfc_get_local_general_bytes
);
550 int nfc_tm_data_received(struct nfc_dev
*dev
, struct sk_buff
*skb
)
552 /* Only LLCP target mode for now */
553 if (dev
->dep_link_up
== false) {
558 return nfc_llcp_data_received(dev
, skb
);
560 EXPORT_SYMBOL(nfc_tm_data_received
);
562 int nfc_tm_activated(struct nfc_dev
*dev
, u32 protocol
, u8 comm_mode
,
563 u8
*gb
, size_t gb_len
)
567 device_lock(&dev
->dev
);
569 dev
->polling
= false;
572 rc
= nfc_set_remote_general_bytes(dev
, gb
, gb_len
);
577 dev
->rf_mode
= NFC_RF_TARGET
;
579 if (protocol
== NFC_PROTO_NFC_DEP_MASK
)
580 nfc_dep_link_is_up(dev
, 0, comm_mode
, NFC_RF_TARGET
);
582 rc
= nfc_genl_tm_activated(dev
, protocol
);
585 device_unlock(&dev
->dev
);
589 EXPORT_SYMBOL(nfc_tm_activated
);
591 int nfc_tm_deactivated(struct nfc_dev
*dev
)
593 dev
->dep_link_up
= false;
594 dev
->rf_mode
= NFC_RF_NONE
;
596 return nfc_genl_tm_deactivated(dev
);
598 EXPORT_SYMBOL(nfc_tm_deactivated
);
601 * nfc_alloc_send_skb - allocate a skb for data exchange responses
603 * @size: size to allocate
606 struct sk_buff
*nfc_alloc_send_skb(struct nfc_dev
*dev
, struct sock
*sk
,
607 unsigned int flags
, unsigned int size
,
611 unsigned int total_size
;
614 dev
->tx_headroom
+ dev
->tx_tailroom
+ NFC_HEADER_SIZE
;
616 skb
= sock_alloc_send_skb(sk
, total_size
, flags
& MSG_DONTWAIT
, err
);
618 skb_reserve(skb
, dev
->tx_headroom
+ NFC_HEADER_SIZE
);
624 * nfc_alloc_recv_skb - allocate a skb for data exchange responses
626 * @size: size to allocate
629 struct sk_buff
*nfc_alloc_recv_skb(unsigned int size
, gfp_t gfp
)
632 unsigned int total_size
;
634 total_size
= size
+ 1;
635 skb
= alloc_skb(total_size
, gfp
);
642 EXPORT_SYMBOL(nfc_alloc_recv_skb
);
645 * nfc_targets_found - inform that targets were found
647 * @dev: The nfc device that found the targets
648 * @targets: array of nfc targets found
649 * @ntargets: targets array size
651 * The device driver must call this function when one or many nfc targets
652 * are found. After calling this function, the device driver must stop
653 * polling for targets.
654 * NOTE: This function can be called with targets=NULL and n_targets=0 to
655 * notify a driver error, meaning that the polling operation cannot complete.
656 * IMPORTANT: this function must not be called from an atomic context.
657 * In addition, it must also not be called from a context that would prevent
658 * the NFC Core to call other nfc ops entry point concurrently.
660 int nfc_targets_found(struct nfc_dev
*dev
,
661 struct nfc_target
*targets
, int n_targets
)
665 pr_debug("dev_name=%s n_targets=%d\n", dev_name(&dev
->dev
), n_targets
);
667 for (i
= 0; i
< n_targets
; i
++)
668 targets
[i
].idx
= dev
->target_next_idx
++;
670 device_lock(&dev
->dev
);
672 if (dev
->polling
== false) {
673 device_unlock(&dev
->dev
);
677 dev
->polling
= false;
679 dev
->targets_generation
++;
685 dev
->targets
= kmemdup(targets
,
686 n_targets
* sizeof(struct nfc_target
),
691 device_unlock(&dev
->dev
);
696 dev
->n_targets
= n_targets
;
697 device_unlock(&dev
->dev
);
699 nfc_genl_targets_found(dev
);
703 EXPORT_SYMBOL(nfc_targets_found
);
706 * nfc_target_lost - inform that an activated target went out of field
708 * @dev: The nfc device that had the activated target in field
709 * @target_idx: the nfc index of the target
711 * The device driver must call this function when the activated target
712 * goes out of the field.
713 * IMPORTANT: this function must not be called from an atomic context.
714 * In addition, it must also not be called from a context that would prevent
715 * the NFC Core to call other nfc ops entry point concurrently.
717 int nfc_target_lost(struct nfc_dev
*dev
, u32 target_idx
)
719 struct nfc_target
*tg
;
722 pr_debug("dev_name %s n_target %d\n", dev_name(&dev
->dev
), target_idx
);
724 device_lock(&dev
->dev
);
726 for (i
= 0; i
< dev
->n_targets
; i
++) {
727 tg
= &dev
->targets
[i
];
728 if (tg
->idx
== target_idx
)
732 if (i
== dev
->n_targets
) {
733 device_unlock(&dev
->dev
);
737 dev
->targets_generation
++;
739 dev
->active_target
= NULL
;
741 if (dev
->n_targets
) {
742 memcpy(&dev
->targets
[i
], &dev
->targets
[i
+ 1],
743 (dev
->n_targets
- i
) * sizeof(struct nfc_target
));
749 device_unlock(&dev
->dev
);
751 nfc_genl_target_lost(dev
, target_idx
);
755 EXPORT_SYMBOL(nfc_target_lost
);
757 inline void nfc_driver_failure(struct nfc_dev
*dev
, int err
)
759 nfc_targets_found(dev
, NULL
, 0);
761 EXPORT_SYMBOL(nfc_driver_failure
);
763 int nfc_add_se(struct nfc_dev
*dev
, u32 se_idx
, u16 type
)
765 struct nfc_se
*se
, *n
;
767 pr_debug("%s se index %d\n", dev_name(&dev
->dev
), se_idx
);
769 list_for_each_entry_safe(se
, n
, &dev
->secure_elements
, list
)
770 if (se
->idx
== se_idx
)
773 se
= kzalloc(sizeof(struct nfc_se
), GFP_KERNEL
);
779 se
->state
= NFC_SE_DISABLED
;
780 INIT_LIST_HEAD(&se
->list
);
782 list_add(&se
->list
, &dev
->secure_elements
);
786 EXPORT_SYMBOL(nfc_add_se
);
788 int nfc_remove_se(struct nfc_dev
*dev
, u32 se_idx
)
790 struct nfc_se
*se
, *n
;
792 pr_debug("%s se index %d\n", dev_name(&dev
->dev
), se_idx
);
794 list_for_each_entry_safe(se
, n
, &dev
->secure_elements
, list
)
795 if (se
->idx
== se_idx
) {
804 EXPORT_SYMBOL(nfc_remove_se
);
806 static void nfc_release(struct device
*d
)
808 struct nfc_dev
*dev
= to_nfc_dev(d
);
810 pr_debug("dev_name=%s\n", dev_name(&dev
->dev
));
812 nfc_genl_data_exit(&dev
->genl_data
);
817 static void nfc_check_pres_work(struct work_struct
*work
)
819 struct nfc_dev
*dev
= container_of(work
, struct nfc_dev
,
823 device_lock(&dev
->dev
);
825 if (dev
->active_target
&& timer_pending(&dev
->check_pres_timer
) == 0) {
826 rc
= dev
->ops
->check_presence(dev
, dev
->active_target
);
827 if (rc
== -EOPNOTSUPP
)
830 u32 active_target_idx
= dev
->active_target
->idx
;
831 device_unlock(&dev
->dev
);
832 nfc_target_lost(dev
, active_target_idx
);
836 if (!dev
->shutting_down
)
837 mod_timer(&dev
->check_pres_timer
, jiffies
+
838 msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS
));
842 device_unlock(&dev
->dev
);
845 static void nfc_check_pres_timeout(unsigned long data
)
847 struct nfc_dev
*dev
= (struct nfc_dev
*)data
;
849 schedule_work(&dev
->check_pres_work
);
852 struct class nfc_class
= {
854 .dev_release
= nfc_release
,
856 EXPORT_SYMBOL(nfc_class
);
858 static int match_idx(struct device
*d
, const void *data
)
860 struct nfc_dev
*dev
= to_nfc_dev(d
);
861 const unsigned int *idx
= data
;
863 return dev
->idx
== *idx
;
866 struct nfc_dev
*nfc_get_device(unsigned int idx
)
870 d
= class_find_device(&nfc_class
, NULL
, &idx
, match_idx
);
874 return to_nfc_dev(d
);
878 * nfc_allocate_device - allocate a new nfc device
880 * @ops: device operations
881 * @supported_protocols: NFC protocols supported by the device
883 struct nfc_dev
*nfc_allocate_device(struct nfc_ops
*ops
,
884 u32 supported_protocols
,
885 int tx_headroom
, int tx_tailroom
)
889 if (!ops
->start_poll
|| !ops
->stop_poll
|| !ops
->activate_target
||
890 !ops
->deactivate_target
|| !ops
->im_transceive
)
893 if (!supported_protocols
)
896 dev
= kzalloc(sizeof(struct nfc_dev
), GFP_KERNEL
);
901 dev
->supported_protocols
= supported_protocols
;
902 dev
->tx_headroom
= tx_headroom
;
903 dev
->tx_tailroom
= tx_tailroom
;
904 INIT_LIST_HEAD(&dev
->secure_elements
);
906 nfc_genl_data_init(&dev
->genl_data
);
908 dev
->rf_mode
= NFC_RF_NONE
;
910 /* first generation must not be 0 */
911 dev
->targets_generation
= 1;
913 if (ops
->check_presence
) {
914 init_timer(&dev
->check_pres_timer
);
915 dev
->check_pres_timer
.data
= (unsigned long)dev
;
916 dev
->check_pres_timer
.function
= nfc_check_pres_timeout
;
918 INIT_WORK(&dev
->check_pres_work
, nfc_check_pres_work
);
923 EXPORT_SYMBOL(nfc_allocate_device
);
926 * nfc_register_device - register a nfc device in the nfc subsystem
928 * @dev: The nfc device to register
930 int nfc_register_device(struct nfc_dev
*dev
)
934 pr_debug("dev_name=%s\n", dev_name(&dev
->dev
));
936 dev
->idx
= ida_simple_get(&nfc_index_ida
, 0, 0, GFP_KERNEL
);
940 dev
->dev
.class = &nfc_class
;
941 dev_set_name(&dev
->dev
, "nfc%d", dev
->idx
);
942 device_initialize(&dev
->dev
);
944 mutex_lock(&nfc_devlist_mutex
);
945 nfc_devlist_generation
++;
946 rc
= device_add(&dev
->dev
);
947 mutex_unlock(&nfc_devlist_mutex
);
952 rc
= nfc_llcp_register_device(dev
);
954 pr_err("Could not register llcp device\n");
956 rc
= nfc_genl_device_added(dev
);
958 pr_debug("The userspace won't be notified that the device %s was added\n",
959 dev_name(&dev
->dev
));
961 dev
->rfkill
= rfkill_alloc(dev_name(&dev
->dev
), &dev
->dev
,
962 RFKILL_TYPE_NFC
, &nfc_rfkill_ops
, dev
);
964 if (rfkill_register(dev
->rfkill
) < 0) {
965 rfkill_destroy(dev
->rfkill
);
972 EXPORT_SYMBOL(nfc_register_device
);
975 * nfc_unregister_device - unregister a nfc device in the nfc subsystem
977 * @dev: The nfc device to unregister
979 void nfc_unregister_device(struct nfc_dev
*dev
)
983 pr_debug("dev_name=%s\n", dev_name(&dev
->dev
));
988 rfkill_unregister(dev
->rfkill
);
989 rfkill_destroy(dev
->rfkill
);
992 if (dev
->ops
->check_presence
) {
993 device_lock(&dev
->dev
);
994 dev
->shutting_down
= true;
995 device_unlock(&dev
->dev
);
996 del_timer_sync(&dev
->check_pres_timer
);
997 cancel_work_sync(&dev
->check_pres_work
);
1000 rc
= nfc_genl_device_removed(dev
);
1002 pr_debug("The userspace won't be notified that the device %s "
1003 "was removed\n", dev_name(&dev
->dev
));
1005 nfc_llcp_unregister_device(dev
);
1007 mutex_lock(&nfc_devlist_mutex
);
1008 nfc_devlist_generation
++;
1009 device_del(&dev
->dev
);
1010 mutex_unlock(&nfc_devlist_mutex
);
1012 ida_simple_remove(&nfc_index_ida
, id
);
1014 EXPORT_SYMBOL(nfc_unregister_device
);
1016 static int __init
nfc_init(void)
1020 pr_info("NFC Core ver %s\n", VERSION
);
1022 rc
= class_register(&nfc_class
);
1026 rc
= nfc_genl_init();
1030 /* the first generation must not be 0 */
1031 nfc_devlist_generation
= 1;
1033 rc
= rawsock_init();
1037 rc
= nfc_llcp_init();
1054 class_unregister(&nfc_class
);
1058 static void __exit
nfc_exit(void)
1064 class_unregister(&nfc_class
);
1067 subsys_initcall(nfc_init
);
1068 module_exit(nfc_exit
);
1070 MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>");
1071 MODULE_DESCRIPTION("NFC Core ver " VERSION
);
1072 MODULE_VERSION(VERSION
);
1073 MODULE_LICENSE("GPL");
1074 MODULE_ALIAS_NETPROTO(PF_NFC
);
1075 MODULE_ALIAS_GENL_FAMILY(NFC_GENL_NAME
);