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 #include <linux/device.h>
25 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/slab.h>
28 #include <linux/usb.h>
29 #include <linux/nfc.h>
30 #include <linux/netdevice.h>
31 #include <net/nfc/nfc.h>
35 #define PN533_VENDOR_ID 0x4CC
36 #define PN533_PRODUCT_ID 0x2533
38 #define SCM_VENDOR_ID 0x4E6
39 #define SCL3711_PRODUCT_ID 0x5591
41 #define SONY_VENDOR_ID 0x054c
42 #define PASORI_PRODUCT_ID 0x02e1
44 #define PN533_DEVICE_STD 0x1
45 #define PN533_DEVICE_PASORI 0x2
47 #define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\
48 NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\
49 NFC_PROTO_NFC_DEP_MASK |\
50 NFC_PROTO_ISO14443_B_MASK)
52 #define PN533_NO_TYPE_B_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \
53 NFC_PROTO_MIFARE_MASK | \
54 NFC_PROTO_FELICA_MASK | \
55 NFC_PROTO_ISO14443_MASK | \
56 NFC_PROTO_NFC_DEP_MASK)
58 static const struct usb_device_id pn533_table[] = {
59 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
60 .idVendor = PN533_VENDOR_ID,
61 .idProduct = PN533_PRODUCT_ID,
62 .driver_info = PN533_DEVICE_STD,
64 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
65 .idVendor = SCM_VENDOR_ID,
66 .idProduct = SCL3711_PRODUCT_ID,
67 .driver_info = PN533_DEVICE_STD,
69 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
70 .idVendor = SONY_VENDOR_ID,
71 .idProduct = PASORI_PRODUCT_ID,
72 .driver_info = PN533_DEVICE_PASORI,
76 MODULE_DEVICE_TABLE(usb, pn533_table);
78 /* How much time we spend listening for initiators */
79 #define PN533_LISTEN_TIME 2
81 /* frame definitions */
82 #define PN533_NORMAL_FRAME_MAX_LEN 262 /* 6 (PREAMBLE, SOF, LEN, LCS, TFI)
85 #define PN533_FRAME_HEADER_LEN (sizeof(struct pn533_frame) \
86 + 2) /* data[0] TFI, data[1] CC */
87 #define PN533_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/
90 * Max extended frame payload len, excluding TFI and CC
91 * which are already in PN533_FRAME_HEADER_LEN.
93 #define PN533_FRAME_MAX_PAYLOAD_LEN 263
95 #define PN533_FRAME_SIZE(f) (sizeof(struct pn533_frame) + f->datalen + \
97 #define PN533_FRAME_ACK_SIZE (sizeof(struct pn533_frame) + 1)
98 #define PN533_FRAME_CHECKSUM(f) (f->data[f->datalen])
99 #define PN533_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1])
102 #define PN533_SOF 0x00FF
104 /* frame identifier: in/out/error */
105 #define PN533_FRAME_IDENTIFIER(f) (f->data[0])
106 #define PN533_DIR_OUT 0xD4
107 #define PN533_DIR_IN 0xD5
110 #define PN533_FRAME_CMD(f) (f->data[1])
111 #define PN533_FRAME_CMD_PARAMS_PTR(f) (&f->data[2])
112 #define PN533_FRAME_CMD_PARAMS_LEN(f) (f->datalen - 2)
114 #define PN533_CMD_GET_FIRMWARE_VERSION 0x02
115 #define PN533_CMD_RF_CONFIGURATION 0x32
116 #define PN533_CMD_IN_DATA_EXCHANGE 0x40
117 #define PN533_CMD_IN_COMM_THRU 0x42
118 #define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A
119 #define PN533_CMD_IN_ATR 0x50
120 #define PN533_CMD_IN_RELEASE 0x52
121 #define PN533_CMD_IN_JUMP_FOR_DEP 0x56
123 #define PN533_CMD_TG_INIT_AS_TARGET 0x8c
124 #define PN533_CMD_TG_GET_DATA 0x86
125 #define PN533_CMD_TG_SET_DATA 0x8e
126 #define PN533_CMD_UNDEF 0xff
128 #define PN533_CMD_RESPONSE(cmd) (cmd + 1)
130 /* PN533 Return codes */
131 #define PN533_CMD_RET_MASK 0x3F
132 #define PN533_CMD_MI_MASK 0x40
133 #define PN533_CMD_RET_SUCCESS 0x00
137 typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg,
138 u8 *params, int params_len);
140 typedef int (*pn533_send_async_complete_t) (struct pn533 *dev, void *arg,
141 struct sk_buff *resp);
143 /* structs for pn533 commands */
145 /* PN533_CMD_GET_FIRMWARE_VERSION */
146 struct pn533_fw_version {
153 /* PN533_CMD_RF_CONFIGURATION */
154 #define PN533_CFGITEM_TIMING 0x02
155 #define PN533_CFGITEM_MAX_RETRIES 0x05
156 #define PN533_CFGITEM_PASORI 0x82
158 #define PN533_CONFIG_TIMING_102 0xb
159 #define PN533_CONFIG_TIMING_204 0xc
160 #define PN533_CONFIG_TIMING_409 0xd
161 #define PN533_CONFIG_TIMING_819 0xe
163 #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00
164 #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF
166 struct pn533_config_max_retries {
169 u8 mx_rty_passive_act;
172 struct pn533_config_timing {
178 /* PN533_CMD_IN_LIST_PASSIVE_TARGET */
180 /* felica commands opcode */
181 #define PN533_FELICA_OPC_SENSF_REQ 0
182 #define PN533_FELICA_OPC_SENSF_RES 1
183 /* felica SENSF_REQ parameters */
184 #define PN533_FELICA_SENSF_SC_ALL 0xFFFF
185 #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0
186 #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1
187 #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2
189 /* type B initiator_data values */
190 #define PN533_TYPE_B_AFI_ALL_FAMILIES 0
191 #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0
192 #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1
194 union pn533_cmd_poll_initdata {
207 /* Poll modulations */
209 PN533_POLL_MOD_106KBPS_A,
210 PN533_POLL_MOD_212KBPS_FELICA,
211 PN533_POLL_MOD_424KBPS_FELICA,
212 PN533_POLL_MOD_106KBPS_JEWEL,
213 PN533_POLL_MOD_847KBPS_B,
216 __PN533_POLL_MOD_AFTER_LAST,
218 #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1)
220 struct pn533_poll_modulations {
224 union pn533_cmd_poll_initdata initiator_data;
229 const struct pn533_poll_modulations poll_mod[] = {
230 [PN533_POLL_MOD_106KBPS_A] = {
237 [PN533_POLL_MOD_212KBPS_FELICA] = {
241 .initiator_data.felica = {
242 .opcode = PN533_FELICA_OPC_SENSF_REQ,
243 .sc = PN533_FELICA_SENSF_SC_ALL,
244 .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE,
250 [PN533_POLL_MOD_424KBPS_FELICA] = {
254 .initiator_data.felica = {
255 .opcode = PN533_FELICA_OPC_SENSF_REQ,
256 .sc = PN533_FELICA_SENSF_SC_ALL,
257 .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE,
263 [PN533_POLL_MOD_106KBPS_JEWEL] = {
270 [PN533_POLL_MOD_847KBPS_B] = {
274 .initiator_data.type_b = {
275 .afi = PN533_TYPE_B_AFI_ALL_FAMILIES,
277 PN533_TYPE_B_POLL_METHOD_TIMESLOT,
282 [PN533_LISTEN_MOD] = {
287 /* PN533_CMD_IN_ATR */
289 struct pn533_cmd_activate_response {
301 struct pn533_cmd_jump_dep_response {
315 /* PN533_TG_INIT_AS_TARGET */
316 #define PN533_INIT_TARGET_PASSIVE 0x1
317 #define PN533_INIT_TARGET_DEP 0x2
319 #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3
320 #define PN533_INIT_TARGET_RESP_ACTIVE 0x1
321 #define PN533_INIT_TARGET_RESP_DEP 0x4
324 struct usb_device *udev;
325 struct usb_interface *interface;
326 struct nfc_dev *nfc_dev;
329 struct pn533_frame *out_frame;
332 struct pn533_frame *in_frame;
334 struct sk_buff_head resp_q;
336 struct workqueue_struct *wq;
337 struct work_struct cmd_work;
338 struct work_struct cmd_complete_work;
339 struct work_struct poll_work;
340 struct work_struct mi_work;
341 struct work_struct tg_work;
342 struct timer_list listen_timer;
343 struct pn533_frame *wq_in_frame;
347 pn533_cmd_complete_t cmd_complete;
348 void *cmd_complete_arg;
349 void *cmd_complete_mi_arg;
350 struct mutex cmd_lock;
353 struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1];
357 u32 listen_protocols;
362 u8 tgt_available_prots;
368 struct list_head cmd_queue;
373 struct list_head queue;
374 struct pn533_frame *out_frame;
375 struct pn533_frame *in_frame;
379 struct sk_buff *resp;
380 pn533_cmd_complete_t cmd_complete;
392 /* The rule: value + checksum = 0 */
393 static inline u8 pn533_checksum(u8 value)
398 /* The rule: sum(data elements) + checksum = 0 */
399 static u8 pn533_data_checksum(u8 *data, int datalen)
404 for (i = 0; i < datalen; i++)
407 return pn533_checksum(sum);
411 * pn533_tx_frame_ack - create a ack frame
412 * @frame: The frame to be set as ack
414 * Ack is different type of standard frame. As a standard frame, it has
415 * preamble and start_frame. However the checksum of this frame must fail,
416 * i.e. datalen + datalen_checksum must NOT be zero. When the checksum test
417 * fails and datalen = 0 and datalen_checksum = 0xFF, the frame is a ack.
418 * After datalen_checksum field, the postamble is placed.
420 static void pn533_tx_frame_ack(struct pn533_frame *frame)
423 frame->start_frame = cpu_to_be16(PN533_SOF);
425 frame->datalen_checksum = 0xFF;
426 /* data[0] is used as postamble */
430 static void pn533_tx_frame_init(struct pn533_frame *frame, u8 cmd)
433 frame->start_frame = cpu_to_be16(PN533_SOF);
434 PN533_FRAME_IDENTIFIER(frame) = PN533_DIR_OUT;
435 PN533_FRAME_CMD(frame) = cmd;
439 static void pn533_tx_frame_finish(struct pn533_frame *frame)
441 frame->datalen_checksum = pn533_checksum(frame->datalen);
443 PN533_FRAME_CHECKSUM(frame) =
444 pn533_data_checksum(frame->data, frame->datalen);
446 PN533_FRAME_POSTAMBLE(frame) = 0;
449 static bool pn533_rx_frame_is_valid(struct pn533_frame *frame)
453 if (frame->start_frame != cpu_to_be16(PN533_SOF))
456 checksum = pn533_checksum(frame->datalen);
457 if (checksum != frame->datalen_checksum)
460 checksum = pn533_data_checksum(frame->data, frame->datalen);
461 if (checksum != PN533_FRAME_CHECKSUM(frame))
467 static bool pn533_rx_frame_is_ack(struct pn533_frame *frame)
469 if (frame->start_frame != cpu_to_be16(PN533_SOF))
472 if (frame->datalen != 0 || frame->datalen_checksum != 0xFF)
478 static bool pn533_rx_frame_is_cmd_response(struct pn533_frame *frame, u8 cmd)
480 return (PN533_FRAME_CMD(frame) == PN533_CMD_RESPONSE(cmd));
484 static void pn533_wq_cmd_complete(struct work_struct *work)
486 struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work);
487 struct pn533_frame *in_frame;
490 in_frame = dev->wq_in_frame;
492 if (dev->wq_in_error)
493 rc = dev->cmd_complete(dev, dev->cmd_complete_arg, NULL,
496 rc = dev->cmd_complete(dev, dev->cmd_complete_arg,
497 PN533_FRAME_CMD_PARAMS_PTR(in_frame),
498 PN533_FRAME_CMD_PARAMS_LEN(in_frame));
500 if (rc != -EINPROGRESS)
501 queue_work(dev->wq, &dev->cmd_work);
504 static void pn533_recv_response(struct urb *urb)
506 struct pn533 *dev = urb->context;
507 struct pn533_frame *in_frame;
509 dev->wq_in_frame = NULL;
511 switch (urb->status) {
518 nfc_dev_dbg(&dev->interface->dev,
519 "Urb shutting down with status: %d", urb->status);
520 dev->wq_in_error = urb->status;
523 nfc_dev_err(&dev->interface->dev,
524 "Nonzero urb status received: %d", urb->status);
525 dev->wq_in_error = urb->status;
529 in_frame = dev->in_urb->transfer_buffer;
531 print_hex_dump(KERN_DEBUG, "PN533 RX: ", DUMP_PREFIX_NONE, 16, 1,
532 in_frame, PN533_FRAME_SIZE(in_frame), false);
534 if (!pn533_rx_frame_is_valid(in_frame)) {
535 nfc_dev_err(&dev->interface->dev, "Received an invalid frame");
536 dev->wq_in_error = -EIO;
540 if (!pn533_rx_frame_is_cmd_response(in_frame, dev->cmd)) {
541 nfc_dev_err(&dev->interface->dev,
542 "It it not the response to the last command");
543 dev->wq_in_error = -EIO;
547 nfc_dev_dbg(&dev->interface->dev, "Received a valid frame");
548 dev->wq_in_error = 0;
549 dev->wq_in_frame = in_frame;
552 queue_work(dev->wq, &dev->cmd_complete_work);
555 static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags)
557 dev->in_urb->complete = pn533_recv_response;
559 return usb_submit_urb(dev->in_urb, flags);
562 static void pn533_recv_ack(struct urb *urb)
564 struct pn533 *dev = urb->context;
565 struct pn533_frame *in_frame;
568 switch (urb->status) {
575 nfc_dev_dbg(&dev->interface->dev,
576 "Urb shutting down with status: %d", urb->status);
577 dev->wq_in_error = urb->status;
580 nfc_dev_err(&dev->interface->dev,
581 "Nonzero urb status received: %d", urb->status);
582 dev->wq_in_error = urb->status;
586 in_frame = dev->in_urb->transfer_buffer;
588 if (!pn533_rx_frame_is_ack(in_frame)) {
589 nfc_dev_err(&dev->interface->dev, "Received an invalid ack");
590 dev->wq_in_error = -EIO;
594 nfc_dev_dbg(&dev->interface->dev, "Received a valid ack");
596 rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC);
598 nfc_dev_err(&dev->interface->dev,
599 "usb_submit_urb failed with result %d", rc);
600 dev->wq_in_error = rc;
607 dev->wq_in_frame = NULL;
608 queue_work(dev->wq, &dev->cmd_complete_work);
611 static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags)
613 dev->in_urb->complete = pn533_recv_ack;
615 return usb_submit_urb(dev->in_urb, flags);
618 static int pn533_send_ack(struct pn533 *dev, gfp_t flags)
622 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
624 pn533_tx_frame_ack(dev->out_frame);
626 dev->out_urb->transfer_buffer = dev->out_frame;
627 dev->out_urb->transfer_buffer_length = PN533_FRAME_ACK_SIZE;
628 rc = usb_submit_urb(dev->out_urb, flags);
633 static int __pn533_send_cmd_frame_async(struct pn533 *dev,
634 struct pn533_frame *out_frame,
635 struct pn533_frame *in_frame,
637 pn533_cmd_complete_t cmd_complete,
642 nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x",
643 PN533_FRAME_CMD(out_frame));
645 dev->cmd = PN533_FRAME_CMD(out_frame);
646 dev->cmd_complete = cmd_complete;
647 dev->cmd_complete_arg = arg;
649 dev->out_urb->transfer_buffer = out_frame;
650 dev->out_urb->transfer_buffer_length =
651 PN533_FRAME_SIZE(out_frame);
653 dev->in_urb->transfer_buffer = in_frame;
654 dev->in_urb->transfer_buffer_length = in_frame_len;
656 print_hex_dump(KERN_DEBUG, "PN533 TX: ", DUMP_PREFIX_NONE, 16, 1,
657 out_frame, PN533_FRAME_SIZE(out_frame), false);
659 rc = usb_submit_urb(dev->out_urb, GFP_KERNEL);
663 rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL);
670 usb_unlink_urb(dev->out_urb);
674 static void pn533_build_cmd_frame(u8 cmd_code, struct sk_buff *skb)
676 struct pn533_frame *frame;
677 /* payload is already there, just update datalen */
678 int payload_len = skb->len;
680 skb_push(skb, PN533_FRAME_HEADER_LEN);
681 skb_put(skb, PN533_FRAME_TAIL_LEN);
683 frame = (struct pn533_frame *)skb->data;
685 pn533_tx_frame_init(frame, cmd_code);
686 frame->datalen += payload_len;
687 pn533_tx_frame_finish(frame);
690 struct pn533_send_async_complete_arg {
691 pn533_send_async_complete_t complete_cb;
692 void *complete_cb_context;
693 struct sk_buff *resp;
697 static int pn533_send_async_complete(struct pn533 *dev, void *_arg, u8 *params,
700 struct pn533_send_async_complete_arg *arg = _arg;
702 struct sk_buff *req = arg->req;
703 struct sk_buff *resp = arg->resp;
705 struct pn533_frame *frame = (struct pn533_frame *)resp->data;
710 if (params_len < 0) {
711 nfc_dev_err(&dev->interface->dev,
712 "Error %d when starting as a target",
715 arg->complete_cb(dev, arg->complete_cb_context,
716 ERR_PTR(params_len));
722 skb_put(resp, PN533_FRAME_SIZE(frame));
723 skb_pull(resp, PN533_FRAME_HEADER_LEN);
724 skb_trim(resp, resp->len - PN533_FRAME_TAIL_LEN);
726 rc = arg->complete_cb(dev, arg->complete_cb_context, resp);
733 static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
734 struct sk_buff *req, struct sk_buff *resp,
736 pn533_send_async_complete_t complete_cb,
737 void *complete_cb_context)
739 struct pn533_cmd *cmd;
740 struct pn533_send_async_complete_arg *arg;
743 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
745 arg = kzalloc(sizeof(arg), GFP_KERNEL);
749 arg->complete_cb = complete_cb;
750 arg->complete_cb_context = complete_cb_context;
754 pn533_build_cmd_frame(cmd_code, req);
756 mutex_lock(&dev->cmd_lock);
758 if (!dev->cmd_pending) {
759 rc = __pn533_send_cmd_frame_async(dev,
760 (struct pn533_frame *)req->data,
761 (struct pn533_frame *)resp->data,
762 resp_len, pn533_send_async_complete,
767 dev->cmd_pending = 1;
771 nfc_dev_dbg(&dev->interface->dev, "%s Queueing command", __func__);
773 cmd = kzalloc(sizeof(struct pn533_cmd), GFP_KERNEL);
779 INIT_LIST_HEAD(&cmd->queue);
780 cmd->cmd_code = cmd_code;
785 list_add_tail(&cmd->queue, &dev->cmd_queue);
792 mutex_unlock(&dev->cmd_lock);
796 static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code,
798 pn533_send_async_complete_t complete_cb,
799 void *complete_cb_context)
801 struct sk_buff *resp;
803 int resp_len = PN533_FRAME_HEADER_LEN +
804 PN533_FRAME_MAX_PAYLOAD_LEN +
805 PN533_FRAME_TAIL_LEN;
807 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
809 resp = nfc_alloc_recv_skb(resp_len, GFP_KERNEL);
813 rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb,
814 complete_cb_context);
821 static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code,
823 pn533_send_async_complete_t complete_cb,
824 void *complete_cb_context)
826 struct sk_buff *resp;
829 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
831 resp = alloc_skb(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL);
835 rc = __pn533_send_async(dev, cmd_code, req, resp,
836 PN533_NORMAL_FRAME_MAX_LEN,
837 complete_cb, complete_cb_context);
845 * pn533_send_cmd_direct_async
847 * The function sends a piority cmd directly to the chip omiting the cmd
848 * queue. It's intended to be used by chaining mechanism of received responses
849 * where the host has to request every single chunk of data before scheduling
850 * next cmd from the queue.
852 static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code,
854 pn533_send_async_complete_t complete_cb,
855 void *complete_cb_context)
857 struct pn533_send_async_complete_arg *arg;
858 struct sk_buff *resp;
860 int resp_len = PN533_FRAME_HEADER_LEN +
861 PN533_FRAME_MAX_PAYLOAD_LEN +
862 PN533_FRAME_TAIL_LEN;
864 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
866 resp = alloc_skb(resp_len, GFP_KERNEL);
870 arg = kzalloc(sizeof(arg), GFP_KERNEL);
876 arg->complete_cb = complete_cb;
877 arg->complete_cb_context = complete_cb_context;
881 pn533_build_cmd_frame(cmd_code, req);
883 rc = __pn533_send_cmd_frame_async(dev, (struct pn533_frame *)req->data,
884 (struct pn533_frame *)resp->data,
885 resp_len, pn533_send_async_complete,
895 static void pn533_wq_cmd(struct work_struct *work)
897 struct pn533 *dev = container_of(work, struct pn533, cmd_work);
898 struct pn533_cmd *cmd;
900 mutex_lock(&dev->cmd_lock);
902 if (list_empty(&dev->cmd_queue)) {
903 dev->cmd_pending = 0;
904 mutex_unlock(&dev->cmd_lock);
908 cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue);
910 list_del(&cmd->queue);
912 mutex_unlock(&dev->cmd_lock);
914 if (cmd->cmd_code != PN533_CMD_UNDEF)
915 __pn533_send_cmd_frame_async(dev,
916 (struct pn533_frame *)cmd->req->data,
917 (struct pn533_frame *)cmd->resp->data,
918 PN533_NORMAL_FRAME_MAX_LEN,
919 pn533_send_async_complete,
922 __pn533_send_cmd_frame_async(dev, cmd->out_frame, cmd->in_frame,
924 cmd->cmd_complete, cmd->arg);
929 static int pn533_send_cmd_frame_async(struct pn533 *dev,
930 struct pn533_frame *out_frame,
931 struct pn533_frame *in_frame,
933 pn533_cmd_complete_t cmd_complete,
936 struct pn533_cmd *cmd;
939 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
941 mutex_lock(&dev->cmd_lock);
943 if (!dev->cmd_pending) {
944 rc = __pn533_send_cmd_frame_async(dev, out_frame, in_frame,
945 in_frame_len, cmd_complete,
948 dev->cmd_pending = 1;
953 nfc_dev_dbg(&dev->interface->dev, "%s Queueing command", __func__);
955 cmd = kzalloc(sizeof(struct pn533_cmd), GFP_KERNEL);
961 INIT_LIST_HEAD(&cmd->queue);
962 cmd->out_frame = out_frame;
963 cmd->in_frame = in_frame;
964 cmd->in_frame_len = in_frame_len;
965 cmd->cmd_code = PN533_CMD_UNDEF;
966 cmd->cmd_complete = cmd_complete;
969 list_add_tail(&cmd->queue, &dev->cmd_queue);
972 mutex_unlock(&dev->cmd_lock);
977 struct pn533_sync_cmd_response {
978 struct sk_buff *resp;
979 struct completion done;
982 static int pn533_send_sync_complete(struct pn533 *dev, void *_arg,
983 struct sk_buff *resp)
985 struct pn533_sync_cmd_response *arg = _arg;
987 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
990 complete(&arg->done);
995 /* pn533_send_cmd_sync
997 * Please note the req parameter is freed inside the function to
998 * limit a number of return value interpretations by the caller.
1000 * 1. negative in case of error during TX path -> req should be freed
1002 * 2. negative in case of error during RX path -> req should not be freed
1003 * as it's been already freed at the begining of RX path by
1004 * async_complete_cb.
1006 * 3. valid pointer in case of succesfult RX path
1008 * A caller has to check a return value with IS_ERR macro. If the test pass,
1009 * the returned pointer is valid.
1012 static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code,
1013 struct sk_buff *req)
1016 struct pn533_sync_cmd_response arg;
1018 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1020 init_completion(&arg.done);
1022 rc = pn533_send_cmd_async(dev, cmd_code, req,
1023 pn533_send_sync_complete, &arg);
1029 wait_for_completion(&arg.done);
1034 static void pn533_send_complete(struct urb *urb)
1036 struct pn533 *dev = urb->context;
1038 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1040 switch (urb->status) {
1047 nfc_dev_dbg(&dev->interface->dev,
1048 "Urb shutting down with status: %d", urb->status);
1051 nfc_dev_dbg(&dev->interface->dev,
1052 "Nonzero urb status received: %d", urb->status);
1056 static struct sk_buff *pn533_alloc_skb(unsigned int size)
1058 struct sk_buff *skb;
1060 skb = alloc_skb(PN533_FRAME_HEADER_LEN +
1062 PN533_FRAME_TAIL_LEN, GFP_KERNEL);
1065 skb_reserve(skb, PN533_FRAME_HEADER_LEN);
1070 struct pn533_target_type_a {
1078 #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6))
1079 #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0))
1080 #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8))
1082 #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00
1083 #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C
1085 #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
1086 #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2)
1088 #define PN533_TYPE_A_SEL_PROT_MIFARE 0
1089 #define PN533_TYPE_A_SEL_PROT_ISO14443 1
1090 #define PN533_TYPE_A_SEL_PROT_DEP 2
1091 #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3
1093 static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a,
1094 int target_data_len)
1099 if (target_data_len < sizeof(struct pn533_target_type_a))
1102 /* The lenght check of nfcid[] and ats[] are not being performed because
1103 the values are not being used */
1105 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
1106 ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res);
1107 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res);
1109 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
1110 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
1111 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
1112 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
1115 /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */
1116 if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0)
1122 static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data,
1125 struct pn533_target_type_a *tgt_type_a;
1127 tgt_type_a = (struct pn533_target_type_a *)tgt_data;
1129 if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len))
1132 switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) {
1133 case PN533_TYPE_A_SEL_PROT_MIFARE:
1134 nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK;
1136 case PN533_TYPE_A_SEL_PROT_ISO14443:
1137 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK;
1139 case PN533_TYPE_A_SEL_PROT_DEP:
1140 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1142 case PN533_TYPE_A_SEL_PROT_ISO14443_DEP:
1143 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK |
1144 NFC_PROTO_NFC_DEP_MASK;
1148 nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res);
1149 nfc_tgt->sel_res = tgt_type_a->sel_res;
1150 nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len;
1151 memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len);
1156 struct pn533_target_felica {
1165 #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01
1166 #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE
1168 static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica,
1169 int target_data_len)
1171 if (target_data_len < sizeof(struct pn533_target_felica))
1174 if (felica->opcode != PN533_FELICA_OPC_SENSF_RES)
1180 static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data,
1183 struct pn533_target_felica *tgt_felica;
1185 tgt_felica = (struct pn533_target_felica *)tgt_data;
1187 if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len))
1190 if (tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1 &&
1191 tgt_felica->nfcid2[1] ==
1192 PN533_FELICA_SENSF_NFCID2_DEP_B2)
1193 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1195 nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK;
1197 memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9);
1198 nfc_tgt->sensf_res_len = 9;
1203 struct pn533_target_jewel {
1208 static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel,
1209 int target_data_len)
1214 if (target_data_len < sizeof(struct pn533_target_jewel))
1217 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
1218 ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res);
1219 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res);
1221 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
1222 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
1223 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
1224 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
1230 static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data,
1233 struct pn533_target_jewel *tgt_jewel;
1235 tgt_jewel = (struct pn533_target_jewel *)tgt_data;
1237 if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len))
1240 nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK;
1241 nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res);
1242 nfc_tgt->nfcid1_len = 4;
1243 memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len);
1248 struct pn533_type_b_prot_info {
1254 #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4)
1255 #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0)
1256 #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8
1258 struct pn533_type_b_sens_res {
1262 struct pn533_type_b_prot_info prot_info;
1265 #define PN533_TYPE_B_OPC_SENSB_RES 0x50
1267 struct pn533_target_type_b {
1268 struct pn533_type_b_sens_res sensb_res;
1273 static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b,
1274 int target_data_len)
1276 if (target_data_len < sizeof(struct pn533_target_type_b))
1279 if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES)
1282 if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) &
1283 PN533_TYPE_B_PROT_TYPE_RFU_MASK)
1289 static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data,
1292 struct pn533_target_type_b *tgt_type_b;
1294 tgt_type_b = (struct pn533_target_type_b *)tgt_data;
1296 if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len))
1299 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
1304 static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata,
1307 struct nfc_target nfc_tgt;
1310 nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__,
1311 dev->poll_mod_curr);
1316 memset(&nfc_tgt, 0, sizeof(struct nfc_target));
1318 switch (dev->poll_mod_curr) {
1319 case PN533_POLL_MOD_106KBPS_A:
1320 rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len);
1322 case PN533_POLL_MOD_212KBPS_FELICA:
1323 case PN533_POLL_MOD_424KBPS_FELICA:
1324 rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len);
1326 case PN533_POLL_MOD_106KBPS_JEWEL:
1327 rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len);
1329 case PN533_POLL_MOD_847KBPS_B:
1330 rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len);
1333 nfc_dev_err(&dev->interface->dev,
1334 "Unknown current poll modulation");
1341 if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) {
1342 nfc_dev_dbg(&dev->interface->dev,
1343 "The Tg found doesn't have the desired protocol");
1347 nfc_dev_dbg(&dev->interface->dev,
1348 "Target found - supported protocols: 0x%x",
1349 nfc_tgt.supported_protocols);
1351 dev->tgt_available_prots = nfc_tgt.supported_protocols;
1353 nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1);
1358 static inline void pn533_poll_next_mod(struct pn533 *dev)
1360 dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count;
1363 static void pn533_poll_reset_mod_list(struct pn533 *dev)
1365 dev->poll_mod_count = 0;
1368 static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index)
1370 dev->poll_mod_active[dev->poll_mod_count] =
1371 (struct pn533_poll_modulations *)&poll_mod[mod_index];
1372 dev->poll_mod_count++;
1375 static void pn533_poll_create_mod_list(struct pn533 *dev,
1376 u32 im_protocols, u32 tm_protocols)
1378 pn533_poll_reset_mod_list(dev);
1380 if (im_protocols & NFC_PROTO_MIFARE_MASK
1381 || im_protocols & NFC_PROTO_ISO14443_MASK
1382 || im_protocols & NFC_PROTO_NFC_DEP_MASK)
1383 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A);
1385 if (im_protocols & NFC_PROTO_FELICA_MASK
1386 || im_protocols & NFC_PROTO_NFC_DEP_MASK) {
1387 pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA);
1388 pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA);
1391 if (im_protocols & NFC_PROTO_JEWEL_MASK)
1392 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL);
1394 if (im_protocols & NFC_PROTO_ISO14443_B_MASK)
1395 pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B);
1398 pn533_poll_add_mod(dev, PN533_LISTEN_MOD);
1401 static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp)
1403 u8 nbtg, tg, *tgdata;
1406 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1408 nbtg = resp->data[0];
1410 tgdata = &resp->data[2];
1411 tgdata_len = resp->len - 2; /* nbtg + tg */
1414 rc = pn533_target_found(dev, tg, tgdata, tgdata_len);
1416 /* We must stop the poll after a valid target found */
1418 pn533_poll_reset_mod_list(dev);
1426 static struct sk_buff *pn533_alloc_poll_tg_frame(u8 *gbytes, size_t gbytes_len)
1428 struct sk_buff *skb;
1429 u8 *felica, *nfcid3, *gb;
1431 u8 felica_params[18] = {0x1, 0xfe, /* DEP */
1432 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */
1433 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1434 0xff, 0xff}; /* System code */
1436 u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */
1438 0x40}; /* SEL_RES for DEP */
1440 unsigned int skb_len = 36 + /* mode (1), mifare (6),
1441 felica (18), nfcid3 (10), gb_len (1) */
1445 skb = pn533_alloc_skb(skb_len);
1449 /* DEP support only */
1450 *skb_put(skb, 1) |= PN533_INIT_TARGET_DEP;
1453 memcpy(skb_put(skb, 6), mifare_params, 6);
1456 felica = skb_put(skb, 18);
1457 memcpy(felica, felica_params, 18);
1458 get_random_bytes(felica + 2, 6);
1461 nfcid3 = skb_put(skb, 10);
1462 memset(nfcid3, 0, 10);
1463 memcpy(nfcid3, felica, 8);
1466 *skb_put(skb, 1) = gbytes_len;
1468 gb = skb_put(skb, gbytes_len);
1469 memcpy(gb, gbytes, gbytes_len);
1472 *skb_put(skb, 1) = 0;
1477 #define PN533_CMD_DATAEXCH_HEAD_LEN 1
1478 #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262
1479 static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg,
1480 struct sk_buff *resp)
1484 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1487 return PTR_ERR(resp);
1489 status = resp->data[0];
1490 skb_pull(resp, sizeof(status));
1493 nfc_tm_deactivated(dev->nfc_dev);
1495 dev_kfree_skb(resp);
1499 return nfc_tm_data_received(dev->nfc_dev, resp);
1502 static void pn533_wq_tg_get_data(struct work_struct *work)
1504 struct pn533 *dev = container_of(work, struct pn533, tg_work);
1506 struct sk_buff *skb;
1509 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1511 skb = pn533_alloc_skb(0);
1515 rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb,
1516 pn533_tm_get_data_complete, NULL);
1524 #define ATR_REQ_GB_OFFSET 17
1525 static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp)
1527 u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb;
1531 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1533 if (resp->len < ATR_REQ_GB_OFFSET + 1)
1536 mode = resp->data[0];
1537 cmd = &resp->data[1];
1539 nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n",
1542 if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) ==
1543 PN533_INIT_TARGET_RESP_ACTIVE)
1544 comm_mode = NFC_COMM_ACTIVE;
1546 if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */
1549 gb = cmd + ATR_REQ_GB_OFFSET;
1550 gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1);
1552 rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK,
1553 comm_mode, gb, gb_len);
1555 nfc_dev_err(&dev->interface->dev,
1556 "Error when signaling target activation");
1561 queue_work(dev->wq, &dev->tg_work);
1566 static void pn533_listen_mode_timer(unsigned long data)
1568 struct pn533 *dev = (struct pn533 *)data;
1570 nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout");
1572 /* An ack will cancel the last issued command (poll) */
1573 pn533_send_ack(dev, GFP_ATOMIC);
1575 dev->cancel_listen = 1;
1577 pn533_poll_next_mod(dev);
1579 queue_work(dev->wq, &dev->poll_work);
1582 static int pn533_poll_complete(struct pn533 *dev, void *arg,
1583 struct sk_buff *resp)
1585 struct pn533_poll_modulations *cur_mod;
1588 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1593 nfc_dev_err(&dev->interface->dev, "%s Poll complete error %d",
1596 if (rc == -ENOENT) {
1597 if (dev->poll_mod_count != 0)
1601 } else if (rc < 0) {
1602 nfc_dev_err(&dev->interface->dev,
1603 "Error %d when running poll", rc);
1608 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1610 if (cur_mod->len == 0) { /* Target mode */
1611 del_timer(&dev->listen_timer);
1612 rc = pn533_init_target_complete(dev, resp);
1616 /* Initiator mode */
1617 rc = pn533_start_poll_complete(dev, resp);
1621 pn533_poll_next_mod(dev);
1622 queue_work(dev->wq, &dev->poll_work);
1625 dev_kfree_skb(resp);
1629 nfc_dev_err(&dev->interface->dev, "Polling operation has been stopped");
1631 pn533_poll_reset_mod_list(dev);
1632 dev->poll_protocols = 0;
1636 static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533_poll_modulations
1639 struct sk_buff *skb;
1641 skb = pn533_alloc_skb(mod->len);
1645 memcpy(skb_put(skb, mod->len), &mod->data, mod->len);
1650 static int pn533_send_poll_frame(struct pn533 *dev)
1652 struct pn533_poll_modulations *mod;
1653 struct sk_buff *skb;
1657 mod = dev->poll_mod_active[dev->poll_mod_curr];
1659 nfc_dev_dbg(&dev->interface->dev, "%s mod len %d\n",
1660 __func__, mod->len);
1662 if (mod->len == 0) { /* Listen mode */
1663 cmd_code = PN533_CMD_TG_INIT_AS_TARGET;
1664 skb = pn533_alloc_poll_tg_frame(dev->gb, dev->gb_len);
1665 } else { /* Polling mode */
1666 cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET;
1667 skb = pn533_alloc_poll_in_frame(mod);
1671 nfc_dev_err(&dev->interface->dev, "Failed to allocate skb.");
1675 rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete,
1679 nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc);
1685 static void pn533_wq_poll(struct work_struct *work)
1687 struct pn533 *dev = container_of(work, struct pn533, poll_work);
1688 struct pn533_poll_modulations *cur_mod;
1691 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1693 nfc_dev_dbg(&dev->interface->dev,
1694 "%s cancel_listen %d modulation len %d",
1695 __func__, dev->cancel_listen, cur_mod->len);
1697 if (dev->cancel_listen == 1) {
1698 dev->cancel_listen = 0;
1699 usb_kill_urb(dev->in_urb);
1702 rc = pn533_send_poll_frame(dev);
1706 if (cur_mod->len == 0 && dev->poll_mod_count > 1)
1707 mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ);
1712 static int pn533_start_poll(struct nfc_dev *nfc_dev,
1713 u32 im_protocols, u32 tm_protocols)
1715 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1717 nfc_dev_dbg(&dev->interface->dev,
1718 "%s: im protocols 0x%x tm protocols 0x%x",
1719 __func__, im_protocols, tm_protocols);
1721 if (dev->tgt_active_prot) {
1722 nfc_dev_err(&dev->interface->dev,
1723 "Cannot poll with a target already activated");
1727 if (dev->tgt_mode) {
1728 nfc_dev_err(&dev->interface->dev,
1729 "Cannot poll while already being activated");
1734 dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len);
1735 if (dev->gb == NULL)
1739 dev->poll_mod_curr = 0;
1740 pn533_poll_create_mod_list(dev, im_protocols, tm_protocols);
1741 dev->poll_protocols = im_protocols;
1742 dev->listen_protocols = tm_protocols;
1744 return pn533_send_poll_frame(dev);
1747 static void pn533_stop_poll(struct nfc_dev *nfc_dev)
1749 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1751 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1753 del_timer(&dev->listen_timer);
1755 if (!dev->poll_mod_count) {
1756 nfc_dev_dbg(&dev->interface->dev,
1757 "Polling operation was not running");
1761 /* An ack will cancel the last issued command (poll) */
1762 pn533_send_ack(dev, GFP_KERNEL);
1764 /* prevent pn533_start_poll_complete to issue a new poll meanwhile */
1765 usb_kill_urb(dev->in_urb);
1767 pn533_poll_reset_mod_list(dev);
1770 static int pn533_activate_target_nfcdep(struct pn533 *dev)
1772 struct pn533_cmd_activate_response *rsp;
1776 struct sk_buff *skb;
1777 struct sk_buff *resp;
1779 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1781 skb = pn533_alloc_skb(sizeof(u8) * 2); /*TG + Next*/
1785 *skb_put(skb, sizeof(u8)) = 1; /* TG */
1786 *skb_put(skb, sizeof(u8)) = 0; /* Next */
1788 resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb);
1790 return PTR_ERR(resp);
1792 rsp = (struct pn533_cmd_activate_response *)resp->data;
1793 rc = rsp->status & PN533_CMD_RET_MASK;
1794 if (rc != PN533_CMD_RET_SUCCESS)
1795 dev_kfree_skb(resp);
1798 /* ATR_RES general bytes are located at offset 16 */
1799 gt_len = resp->len - 16;
1800 rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len);
1802 dev_kfree_skb(resp);
1806 static int pn533_activate_target(struct nfc_dev *nfc_dev,
1807 struct nfc_target *target, u32 protocol)
1809 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1812 nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__,
1815 if (dev->poll_mod_count) {
1816 nfc_dev_err(&dev->interface->dev,
1817 "Cannot activate while polling");
1821 if (dev->tgt_active_prot) {
1822 nfc_dev_err(&dev->interface->dev,
1823 "There is already an active target");
1827 if (!dev->tgt_available_prots) {
1828 nfc_dev_err(&dev->interface->dev,
1829 "There is no available target to activate");
1833 if (!(dev->tgt_available_prots & (1 << protocol))) {
1834 nfc_dev_err(&dev->interface->dev,
1835 "Target doesn't support requested proto %u",
1840 if (protocol == NFC_PROTO_NFC_DEP) {
1841 rc = pn533_activate_target_nfcdep(dev);
1843 nfc_dev_err(&dev->interface->dev,
1844 "Activating target with DEP failed %d", rc);
1849 dev->tgt_active_prot = protocol;
1850 dev->tgt_available_prots = 0;
1855 static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
1856 struct nfc_target *target)
1858 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1860 struct sk_buff *skb;
1861 struct sk_buff *resp;
1865 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1867 if (!dev->tgt_active_prot) {
1868 nfc_dev_err(&dev->interface->dev, "There is no active target");
1872 dev->tgt_active_prot = 0;
1873 skb_queue_purge(&dev->resp_q);
1875 skb = pn533_alloc_skb(sizeof(u8));
1879 *skb_put(skb, 1) = 1; /* TG*/
1881 resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_RELEASE, skb);
1885 rc = resp->data[0] & PN533_CMD_RET_MASK;
1886 if (rc != PN533_CMD_RET_SUCCESS)
1887 nfc_dev_err(&dev->interface->dev,
1888 "Error 0x%x when releasing the target", rc);
1890 dev_kfree_skb(resp);
1895 static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg,
1896 struct sk_buff *resp)
1898 struct pn533_cmd_jump_dep_response *rsp;
1901 u8 active = *(u8 *)arg;
1906 return PTR_ERR(resp);
1908 if (dev->tgt_available_prots &&
1909 !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) {
1910 nfc_dev_err(&dev->interface->dev,
1911 "The target does not support DEP");
1916 rsp = (struct pn533_cmd_jump_dep_response *)resp->data;
1918 rc = rsp->status & PN533_CMD_RET_MASK;
1919 if (rc != PN533_CMD_RET_SUCCESS) {
1920 nfc_dev_err(&dev->interface->dev,
1921 "Bringing DEP link up failed %d", rc);
1925 if (!dev->tgt_available_prots) {
1926 struct nfc_target nfc_target;
1928 nfc_dev_dbg(&dev->interface->dev, "Creating new target");
1930 nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1931 nfc_target.nfcid1_len = 10;
1932 memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len);
1933 rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1);
1937 dev->tgt_available_prots = 0;
1940 dev->tgt_active_prot = NFC_PROTO_NFC_DEP;
1942 /* ATR_RES general bytes are located at offset 17 */
1943 target_gt_len = resp->len - 17;
1944 rc = nfc_set_remote_general_bytes(dev->nfc_dev,
1945 rsp->gt, target_gt_len);
1947 rc = nfc_dep_link_is_up(dev->nfc_dev,
1948 dev->nfc_dev->targets[0].idx,
1949 !active, NFC_RF_INITIATOR);
1952 dev_kfree_skb(resp);
1956 static int pn533_mod_to_baud(struct pn533 *dev)
1958 switch (dev->poll_mod_curr) {
1959 case PN533_POLL_MOD_106KBPS_A:
1961 case PN533_POLL_MOD_212KBPS_FELICA:
1963 case PN533_POLL_MOD_424KBPS_FELICA:
1970 #define PASSIVE_DATA_LEN 5
1971 static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
1972 u8 comm_mode, u8 *gb, size_t gb_len)
1974 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1975 struct sk_buff *skb;
1976 int rc, baud, skb_len;
1979 u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
1981 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1983 if (dev->poll_mod_count) {
1984 nfc_dev_err(&dev->interface->dev,
1985 "Cannot bring the DEP link up while polling");
1989 if (dev->tgt_active_prot) {
1990 nfc_dev_err(&dev->interface->dev,
1991 "There is already an active target");
1995 baud = pn533_mod_to_baud(dev);
1997 nfc_dev_err(&dev->interface->dev,
1998 "Invalid curr modulation %d", dev->poll_mod_curr);
2002 skb_len = 3 + gb_len; /* ActPass + BR + Next */
2003 if (comm_mode == NFC_COMM_PASSIVE)
2004 skb_len += PASSIVE_DATA_LEN;
2006 skb = pn533_alloc_skb(skb_len);
2010 *skb_put(skb, 1) = !comm_mode; /* ActPass */
2011 *skb_put(skb, 1) = baud; /* Baud rate */
2013 next = skb_put(skb, 1); /* Next */
2016 if (comm_mode == NFC_COMM_PASSIVE && baud > 0) {
2017 memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data,
2022 if (gb != NULL && gb_len > 0) {
2023 memcpy(skb_put(skb, gb_len), gb, gb_len);
2024 *next |= 4; /* We have some Gi */
2029 arg = kmalloc(sizeof(*arg), GFP_KERNEL);
2037 rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb,
2038 pn533_in_dep_link_up_complete, arg);
2048 static int pn533_dep_link_down(struct nfc_dev *nfc_dev)
2050 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2052 pn533_poll_reset_mod_list(dev);
2054 if (dev->tgt_mode || dev->tgt_active_prot) {
2055 pn533_send_ack(dev, GFP_KERNEL);
2056 usb_kill_urb(dev->in_urb);
2059 dev->tgt_active_prot = 0;
2062 skb_queue_purge(&dev->resp_q);
2067 struct pn533_data_exchange_arg {
2068 data_exchange_cb_t cb;
2072 static struct sk_buff *pn533_build_response(struct pn533 *dev)
2074 struct sk_buff *skb, *tmp, *t;
2075 unsigned int skb_len = 0, tmp_len = 0;
2077 nfc_dev_dbg(&dev->interface->dev, "%s\n", __func__);
2079 if (skb_queue_empty(&dev->resp_q))
2082 if (skb_queue_len(&dev->resp_q) == 1) {
2083 skb = skb_dequeue(&dev->resp_q);
2087 skb_queue_walk_safe(&dev->resp_q, tmp, t)
2088 skb_len += tmp->len;
2090 nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n",
2093 skb = alloc_skb(skb_len, GFP_KERNEL);
2097 skb_put(skb, skb_len);
2099 skb_queue_walk_safe(&dev->resp_q, tmp, t) {
2100 memcpy(skb->data + tmp_len, tmp->data, tmp->len);
2101 tmp_len += tmp->len;
2105 skb_queue_purge(&dev->resp_q);
2110 static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg,
2111 struct sk_buff *resp)
2113 struct pn533_data_exchange_arg *arg = _arg;
2114 struct sk_buff *skb;
2118 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2125 status = resp->data[0];
2126 ret = status & PN533_CMD_RET_MASK;
2127 mi = status & PN533_CMD_MI_MASK;
2129 skb_pull(resp, sizeof(status));
2131 if (ret != PN533_CMD_RET_SUCCESS) {
2132 nfc_dev_err(&dev->interface->dev,
2133 "PN533 reported error %d when exchanging data",
2139 skb_queue_tail(&dev->resp_q, resp);
2142 dev->cmd_complete_mi_arg = arg;
2143 queue_work(dev->wq, &dev->mi_work);
2144 return -EINPROGRESS;
2147 skb = pn533_build_response(dev);
2151 arg->cb(arg->cb_context, skb, 0);
2156 dev_kfree_skb(resp);
2158 skb_queue_purge(&dev->resp_q);
2159 arg->cb(arg->cb_context, NULL, rc);
2164 static int pn533_transceive(struct nfc_dev *nfc_dev,
2165 struct nfc_target *target, struct sk_buff *skb,
2166 data_exchange_cb_t cb, void *cb_context)
2168 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2169 struct pn533_data_exchange_arg *arg = NULL;
2172 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2174 if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
2175 /* TODO: Implement support to multi-part data exchange */
2176 nfc_dev_err(&dev->interface->dev,
2177 "Data length greater than the max allowed: %d",
2178 PN533_CMD_DATAEXCH_DATA_MAXLEN);
2183 if (!dev->tgt_active_prot) {
2184 nfc_dev_err(&dev->interface->dev,
2185 "Can't exchange data if there is no active target");
2190 arg = kmalloc(sizeof(*arg), GFP_KERNEL);
2197 arg->cb_context = cb_context;
2199 switch (dev->device_type) {
2200 case PN533_DEVICE_PASORI:
2201 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
2202 rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU,
2204 pn533_data_exchange_complete,
2210 *skb_push(skb, sizeof(u8)) = 1; /*TG*/
2212 rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE,
2213 skb, pn533_data_exchange_complete,
2219 if (rc < 0) /* rc from send_async */
2230 static int pn533_tm_send_complete(struct pn533 *dev, void *arg,
2231 struct sk_buff *resp)
2235 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2238 return PTR_ERR(resp);
2240 status = resp->data[0];
2242 dev_kfree_skb(resp);
2245 nfc_tm_deactivated(dev->nfc_dev);
2252 queue_work(dev->wq, &dev->tg_work);
2257 static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
2259 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2262 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2264 if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
2265 nfc_dev_err(&dev->interface->dev,
2266 "Data length greater than the max allowed: %d",
2267 PN533_CMD_DATAEXCH_DATA_MAXLEN);
2271 rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb,
2272 pn533_tm_send_complete, NULL);
2279 static void pn533_wq_mi_recv(struct work_struct *work)
2281 struct pn533 *dev = container_of(work, struct pn533, mi_work);
2283 struct sk_buff *skb;
2286 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2288 skb = pn533_alloc_skb(PN533_CMD_DATAEXCH_HEAD_LEN);
2292 switch (dev->device_type) {
2293 case PN533_DEVICE_PASORI:
2294 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
2295 rc = pn533_send_cmd_direct_async(dev,
2296 PN533_CMD_IN_COMM_THRU,
2298 pn533_data_exchange_complete,
2299 dev->cmd_complete_mi_arg);
2304 *skb_put(skb, sizeof(u8)) = 1; /*TG*/
2306 rc = pn533_send_cmd_direct_async(dev,
2307 PN533_CMD_IN_DATA_EXCHANGE,
2309 pn533_data_exchange_complete,
2310 dev->cmd_complete_mi_arg);
2315 if (rc == 0) /* success */
2318 nfc_dev_err(&dev->interface->dev,
2319 "Error %d when trying to perform data_exchange", rc);
2322 kfree(dev->cmd_complete_arg);
2325 pn533_send_ack(dev, GFP_KERNEL);
2326 queue_work(dev->wq, &dev->cmd_work);
2329 static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata,
2332 struct sk_buff *skb;
2333 struct sk_buff *resp;
2337 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2339 skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */
2341 skb = pn533_alloc_skb(skb_len);
2345 *skb_put(skb, sizeof(cfgitem)) = cfgitem;
2346 memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len);
2348 resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb);
2350 return PTR_ERR(resp);
2352 dev_kfree_skb(resp);
2356 static int pn533_get_firmware_version(struct pn533 *dev,
2357 struct pn533_fw_version *fv)
2359 struct sk_buff *skb;
2360 struct sk_buff *resp;
2362 skb = pn533_alloc_skb(0);
2366 resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb);
2368 return PTR_ERR(resp);
2370 fv->ic = resp->data[0];
2371 fv->ver = resp->data[1];
2372 fv->rev = resp->data[2];
2373 fv->support = resp->data[3];
2375 dev_kfree_skb(resp);
2379 static int pn533_fw_reset(struct pn533 *dev)
2381 struct sk_buff *skb;
2382 struct sk_buff *resp;
2384 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2386 skb = pn533_alloc_skb(sizeof(u8));
2390 *skb_put(skb, sizeof(u8)) = 0x1;
2392 resp = pn533_send_cmd_sync(dev, 0x18, skb);
2394 return PTR_ERR(resp);
2396 dev_kfree_skb(resp);
2401 static struct nfc_ops pn533_nfc_ops = {
2404 .dep_link_up = pn533_dep_link_up,
2405 .dep_link_down = pn533_dep_link_down,
2406 .start_poll = pn533_start_poll,
2407 .stop_poll = pn533_stop_poll,
2408 .activate_target = pn533_activate_target,
2409 .deactivate_target = pn533_deactivate_target,
2410 .im_transceive = pn533_transceive,
2411 .tm_send = pn533_tm_send,
2414 static int pn533_setup(struct pn533 *dev)
2416 struct pn533_config_max_retries max_retries;
2417 struct pn533_config_timing timing;
2418 u8 pasori_cfg[3] = {0x08, 0x01, 0x08};
2421 switch (dev->device_type) {
2422 case PN533_DEVICE_STD:
2423 max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS;
2424 max_retries.mx_rty_psl = 2;
2425 max_retries.mx_rty_passive_act =
2426 PN533_CONFIG_MAX_RETRIES_NO_RETRY;
2428 timing.rfu = PN533_CONFIG_TIMING_102;
2429 timing.atr_res_timeout = PN533_CONFIG_TIMING_204;
2430 timing.dep_timeout = PN533_CONFIG_TIMING_409;
2434 case PN533_DEVICE_PASORI:
2435 max_retries.mx_rty_atr = 0x2;
2436 max_retries.mx_rty_psl = 0x1;
2437 max_retries.mx_rty_passive_act =
2438 PN533_CONFIG_MAX_RETRIES_NO_RETRY;
2440 timing.rfu = PN533_CONFIG_TIMING_102;
2441 timing.atr_res_timeout = PN533_CONFIG_TIMING_102;
2442 timing.dep_timeout = PN533_CONFIG_TIMING_204;
2447 nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
2452 rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES,
2453 (u8 *)&max_retries, sizeof(max_retries));
2455 nfc_dev_err(&dev->interface->dev,
2456 "Error on setting MAX_RETRIES config");
2461 rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING,
2462 (u8 *)&timing, sizeof(timing));
2464 nfc_dev_err(&dev->interface->dev,
2465 "Error on setting RF timings");
2469 switch (dev->device_type) {
2470 case PN533_DEVICE_STD:
2473 case PN533_DEVICE_PASORI:
2474 pn533_fw_reset(dev);
2476 rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI,
2479 nfc_dev_err(&dev->interface->dev,
2480 "Error while settings PASORI config");
2484 pn533_fw_reset(dev);
2492 static int pn533_probe(struct usb_interface *interface,
2493 const struct usb_device_id *id)
2495 struct pn533_fw_version fw_ver;
2497 struct usb_host_interface *iface_desc;
2498 struct usb_endpoint_descriptor *endpoint;
2499 int in_endpoint = 0;
2500 int out_endpoint = 0;
2505 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2509 dev->udev = usb_get_dev(interface_to_usbdev(interface));
2510 dev->interface = interface;
2511 mutex_init(&dev->cmd_lock);
2513 iface_desc = interface->cur_altsetting;
2514 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
2515 endpoint = &iface_desc->endpoint[i].desc;
2517 if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint))
2518 in_endpoint = endpoint->bEndpointAddress;
2520 if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint))
2521 out_endpoint = endpoint->bEndpointAddress;
2524 if (!in_endpoint || !out_endpoint) {
2525 nfc_dev_err(&interface->dev,
2526 "Could not find bulk-in or bulk-out endpoint");
2531 dev->in_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL);
2532 dev->in_urb = usb_alloc_urb(0, GFP_KERNEL);
2533 dev->out_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL);
2534 dev->out_urb = usb_alloc_urb(0, GFP_KERNEL);
2536 if (!dev->in_frame || !dev->out_frame ||
2537 !dev->in_urb || !dev->out_urb)
2540 usb_fill_bulk_urb(dev->in_urb, dev->udev,
2541 usb_rcvbulkpipe(dev->udev, in_endpoint),
2542 NULL, 0, NULL, dev);
2543 usb_fill_bulk_urb(dev->out_urb, dev->udev,
2544 usb_sndbulkpipe(dev->udev, out_endpoint),
2546 pn533_send_complete, dev);
2548 INIT_WORK(&dev->cmd_work, pn533_wq_cmd);
2549 INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete);
2550 INIT_WORK(&dev->mi_work, pn533_wq_mi_recv);
2551 INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data);
2552 INIT_WORK(&dev->poll_work, pn533_wq_poll);
2553 dev->wq = alloc_ordered_workqueue("pn533", 0);
2554 if (dev->wq == NULL)
2557 init_timer(&dev->listen_timer);
2558 dev->listen_timer.data = (unsigned long) dev;
2559 dev->listen_timer.function = pn533_listen_mode_timer;
2561 skb_queue_head_init(&dev->resp_q);
2563 INIT_LIST_HEAD(&dev->cmd_queue);
2565 usb_set_intfdata(interface, dev);
2567 memset(&fw_ver, 0, sizeof(fw_ver));
2568 rc = pn533_get_firmware_version(dev, &fw_ver);
2572 nfc_dev_info(&dev->interface->dev,
2573 "NXP PN533 firmware ver %d.%d now attached",
2574 fw_ver.ver, fw_ver.rev);
2576 dev->device_type = id->driver_info;
2577 switch (dev->device_type) {
2578 case PN533_DEVICE_STD:
2579 protocols = PN533_ALL_PROTOCOLS;
2582 case PN533_DEVICE_PASORI:
2583 protocols = PN533_NO_TYPE_B_PROTOCOLS;
2587 nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
2593 dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols,
2594 PN533_FRAME_HEADER_LEN +
2595 PN533_CMD_DATAEXCH_HEAD_LEN,
2596 PN533_FRAME_TAIL_LEN);
2600 nfc_set_parent_dev(dev->nfc_dev, &interface->dev);
2601 nfc_set_drvdata(dev->nfc_dev, dev);
2603 rc = nfc_register_device(dev->nfc_dev);
2607 rc = pn533_setup(dev);
2609 goto unregister_nfc_dev;
2614 nfc_unregister_device(dev->nfc_dev);
2617 nfc_free_device(dev->nfc_dev);
2620 destroy_workqueue(dev->wq);
2622 kfree(dev->in_frame);
2623 usb_free_urb(dev->in_urb);
2624 kfree(dev->out_frame);
2625 usb_free_urb(dev->out_urb);
2630 static void pn533_disconnect(struct usb_interface *interface)
2633 struct pn533_cmd *cmd, *n;
2635 dev = usb_get_intfdata(interface);
2636 usb_set_intfdata(interface, NULL);
2638 nfc_unregister_device(dev->nfc_dev);
2639 nfc_free_device(dev->nfc_dev);
2641 usb_kill_urb(dev->in_urb);
2642 usb_kill_urb(dev->out_urb);
2644 destroy_workqueue(dev->wq);
2646 skb_queue_purge(&dev->resp_q);
2648 del_timer(&dev->listen_timer);
2650 list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) {
2651 list_del(&cmd->queue);
2655 kfree(dev->in_frame);
2656 usb_free_urb(dev->in_urb);
2657 kfree(dev->out_frame);
2658 usb_free_urb(dev->out_urb);
2661 nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected");
2664 static struct usb_driver pn533_driver = {
2666 .probe = pn533_probe,
2667 .disconnect = pn533_disconnect,
2668 .id_table = pn533_table,
2671 module_usb_driver(pn533_driver);
2673 MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>,"
2674 " Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
2675 MODULE_DESCRIPTION("PN533 usb driver ver " VERSION);
2676 MODULE_VERSION(VERSION);
2677 MODULE_LICENSE("GPL");