2 * Secure Element driver for STMicroelectronics NFC NCI chip
4 * Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 #include <linux/module.h>
20 #include <linux/nfc.h>
21 #include <linux/delay.h>
22 #include <net/nfc/nci.h>
23 #include <net/nfc/nci_core.h>
27 struct st_nci_pipe_info {
36 #define ST_NCI_HOST_CONTROLLER_ID 0x00
37 #define ST_NCI_TERMINAL_HOST_ID 0x01
38 #define ST_NCI_UICC_HOST_ID 0x02
39 #define ST_NCI_ESE_HOST_ID 0xc0
42 #define ST_NCI_DEVICE_MGNT_GATE 0x01
43 #define ST_NCI_APDU_READER_GATE 0xf0
44 #define ST_NCI_CONNECTIVITY_GATE 0x41
47 #define ST_NCI_DEVICE_MGNT_PIPE 0x02
49 /* Connectivity pipe only */
50 #define ST_NCI_SE_COUNT_PIPE_UICC 0x01
51 /* Connectivity + APDU Reader pipe */
52 #define ST_NCI_SE_COUNT_PIPE_EMBEDDED 0x02
54 #define ST_NCI_SE_TO_HOT_PLUG 1000 /* msecs */
55 #define ST_NCI_SE_TO_PIPES 2000
57 #define ST_NCI_EVT_HOT_PLUG_IS_INHIBITED(x) (x->data[0] & 0x80)
59 #define NCI_HCI_APDU_PARAM_ATR 0x01
60 #define NCI_HCI_ADMIN_PARAM_SESSION_IDENTITY 0x01
61 #define NCI_HCI_ADMIN_PARAM_WHITELIST 0x03
62 #define NCI_HCI_ADMIN_PARAM_HOST_LIST 0x04
64 #define ST_NCI_EVT_SE_HARD_RESET 0x20
65 #define ST_NCI_EVT_TRANSMIT_DATA 0x10
66 #define ST_NCI_EVT_WTX_REQUEST 0x11
67 #define ST_NCI_EVT_SE_SOFT_RESET 0x11
68 #define ST_NCI_EVT_SE_END_OF_APDU_TRANSFER 0x21
69 #define ST_NCI_EVT_HOT_PLUG 0x03
71 #define ST_NCI_SE_MODE_OFF 0x00
72 #define ST_NCI_SE_MODE_ON 0x01
74 #define ST_NCI_EVT_CONNECTIVITY 0x10
75 #define ST_NCI_EVT_TRANSACTION 0x12
77 #define ST_NCI_DM_GETINFO 0x13
78 #define ST_NCI_DM_GETINFO_PIPE_LIST 0x02
79 #define ST_NCI_DM_GETINFO_PIPE_INFO 0x01
80 #define ST_NCI_DM_PIPE_CREATED 0x02
81 #define ST_NCI_DM_PIPE_OPEN 0x04
82 #define ST_NCI_DM_RF_ACTIVE 0x80
83 #define ST_NCI_DM_DISCONNECT 0x30
85 #define ST_NCI_DM_IS_PIPE_OPEN(p) \
86 ((p & 0x0f) == (ST_NCI_DM_PIPE_CREATED | ST_NCI_DM_PIPE_OPEN))
88 #define ST_NCI_ATR_DEFAULT_BWI 0x04
91 * WT = 2^BWI/10[s], convert into msecs and add a secure
92 * room by increasing by 2 this timeout
94 #define ST_NCI_BWI_TO_TIMEOUT(x) ((1 << x) * 200)
95 #define ST_NCI_ATR_GET_Y_FROM_TD(x) (x >> 4)
97 /* If TA is present bit 0 is set */
98 #define ST_NCI_ATR_TA_PRESENT(x) (x & 0x01)
99 /* If TB is present bit 1 is set */
100 #define ST_NCI_ATR_TB_PRESENT(x) (x & 0x02)
102 #define ST_NCI_NUM_DEVICES 256
104 static DECLARE_BITMAP(dev_mask, ST_NCI_NUM_DEVICES);
106 /* Here are the mandatory pipe for st_nci */
107 static struct nci_hci_gate st_nci_gates[] = {
108 {NCI_HCI_ADMIN_GATE, NCI_HCI_ADMIN_PIPE,
109 ST_NCI_HOST_CONTROLLER_ID},
110 {NCI_HCI_LINK_MGMT_GATE, NCI_HCI_LINK_MGMT_PIPE,
111 ST_NCI_HOST_CONTROLLER_ID},
112 {ST_NCI_DEVICE_MGNT_GATE, ST_NCI_DEVICE_MGNT_PIPE,
113 ST_NCI_HOST_CONTROLLER_ID},
115 {NCI_HCI_IDENTITY_MGMT_GATE, NCI_HCI_INVALID_PIPE,
116 ST_NCI_HOST_CONTROLLER_ID},
118 /* Secure element pipes are created by secure element host */
119 {ST_NCI_CONNECTIVITY_GATE, NCI_HCI_DO_NOT_OPEN_PIPE,
120 ST_NCI_HOST_CONTROLLER_ID},
121 {ST_NCI_APDU_READER_GATE, NCI_HCI_DO_NOT_OPEN_PIPE,
122 ST_NCI_HOST_CONTROLLER_ID},
125 static u8 st_nci_se_get_bwi(struct nci_dev *ndev)
129 struct st_nci_info *info = nci_get_drvdata(ndev);
131 /* Bits 8 to 5 of the first TB for T=1 encode BWI from zero to nine */
132 for (i = 1; i < ST_NCI_ESE_MAX_LENGTH; i++) {
133 td = ST_NCI_ATR_GET_Y_FROM_TD(info->se_info.atr[i]);
134 if (ST_NCI_ATR_TA_PRESENT(td))
136 if (ST_NCI_ATR_TB_PRESENT(td)) {
138 return info->se_info.atr[i] >> 4;
141 return ST_NCI_ATR_DEFAULT_BWI;
144 static void st_nci_se_get_atr(struct nci_dev *ndev)
146 struct st_nci_info *info = nci_get_drvdata(ndev);
150 r = nci_hci_get_param(ndev, ST_NCI_APDU_READER_GATE,
151 NCI_HCI_APDU_PARAM_ATR, &skb);
155 if (skb->len <= ST_NCI_ESE_MAX_LENGTH) {
156 memcpy(info->se_info.atr, skb->data, skb->len);
158 info->se_info.wt_timeout =
159 ST_NCI_BWI_TO_TIMEOUT(st_nci_se_get_bwi(ndev));
164 int st_nci_hci_load_session(struct nci_dev *ndev)
167 struct sk_buff *skb_pipe_list, *skb_pipe_info;
168 struct st_nci_pipe_info *dm_pipe_info;
169 u8 pipe_list[] = { ST_NCI_DM_GETINFO_PIPE_LIST,
170 ST_NCI_TERMINAL_HOST_ID};
171 u8 pipe_info[] = { ST_NCI_DM_GETINFO_PIPE_INFO,
172 ST_NCI_TERMINAL_HOST_ID, 0};
174 /* On ST_NCI device pipes number are dynamics
175 * If pipes are already created, hci_dev_up will fail.
176 * Doing a clear all pipe is a bad idea because:
177 * - It does useless EEPROM cycling
178 * - It might cause issue for secure elements support
179 * (such as removing connectivity or APDU reader pipe)
180 * A better approach on ST_NCI is to:
181 * - get a pipe list for each host.
182 * (eg: ST_NCI_HOST_CONTROLLER_ID for now).
183 * (TODO Later on UICC HOST and eSE HOST)
184 * - get pipe information
185 * - match retrieved pipe list in st_nci_gates
186 * ST_NCI_DEVICE_MGNT_GATE is a proprietary gate
187 * with ST_NCI_DEVICE_MGNT_PIPE.
188 * Pipe can be closed and need to be open.
190 r = nci_hci_connect_gate(ndev, ST_NCI_HOST_CONTROLLER_ID,
191 ST_NCI_DEVICE_MGNT_GATE,
192 ST_NCI_DEVICE_MGNT_PIPE);
197 r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
198 ST_NCI_DM_GETINFO, pipe_list, sizeof(pipe_list),
203 /* Complete the existing gate_pipe table */
204 for (i = 0; i < skb_pipe_list->len; i++) {
205 pipe_info[2] = skb_pipe_list->data[i];
206 r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
207 ST_NCI_DM_GETINFO, pipe_info,
208 sizeof(pipe_info), &skb_pipe_info);
214 * Match pipe ID and gate ID
215 * Output format from ST21NFC_DM_GETINFO is:
216 * - pipe state (1byte)
217 * - source hid (1byte)
218 * - source gid (1byte)
219 * - destination hid (1byte)
220 * - destination gid (1byte)
222 dm_pipe_info = (struct st_nci_pipe_info *)skb_pipe_info->data;
223 if (dm_pipe_info->dst_gate_id == ST_NCI_APDU_READER_GATE &&
224 dm_pipe_info->src_host_id != ST_NCI_ESE_HOST_ID) {
225 pr_err("Unexpected apdu_reader pipe on host %x\n",
226 dm_pipe_info->src_host_id);
227 kfree_skb(skb_pipe_info);
231 for (j = 0; (j < ARRAY_SIZE(st_nci_gates)) &&
232 (st_nci_gates[j].gate != dm_pipe_info->dst_gate_id); j++)
235 if (j < ARRAY_SIZE(st_nci_gates) &&
236 st_nci_gates[j].gate == dm_pipe_info->dst_gate_id &&
237 ST_NCI_DM_IS_PIPE_OPEN(dm_pipe_info->pipe_state)) {
238 ndev->hci_dev->init_data.gates[j].pipe = pipe_info[2];
240 ndev->hci_dev->gate2pipe[st_nci_gates[j].gate] =
242 ndev->hci_dev->pipes[pipe_info[2]].gate =
243 st_nci_gates[j].gate;
244 ndev->hci_dev->pipes[pipe_info[2]].host =
245 dm_pipe_info->src_host_id;
247 kfree_skb(skb_pipe_info);
251 * 3 gates have a well known pipe ID. Only NCI_HCI_LINK_MGMT_GATE
252 * is not yet open at this stage.
254 r = nci_hci_connect_gate(ndev, ST_NCI_HOST_CONTROLLER_ID,
255 NCI_HCI_LINK_MGMT_GATE,
256 NCI_HCI_LINK_MGMT_PIPE);
258 kfree_skb(skb_pipe_list);
261 EXPORT_SYMBOL_GPL(st_nci_hci_load_session);
263 static void st_nci_hci_admin_event_received(struct nci_dev *ndev,
264 u8 event, struct sk_buff *skb)
266 struct st_nci_info *info = nci_get_drvdata(ndev);
269 case ST_NCI_EVT_HOT_PLUG:
270 if (info->se_info.se_active) {
271 if (!ST_NCI_EVT_HOT_PLUG_IS_INHIBITED(skb)) {
272 del_timer_sync(&info->se_info.se_active_timer);
273 info->se_info.se_active = false;
274 complete(&info->se_info.req_completion);
276 mod_timer(&info->se_info.se_active_timer,
278 msecs_to_jiffies(ST_NCI_SE_TO_PIPES));
285 static int st_nci_hci_apdu_reader_event_received(struct nci_dev *ndev,
290 struct st_nci_info *info = nci_get_drvdata(ndev);
292 pr_debug("apdu reader gate event: %x\n", event);
295 case ST_NCI_EVT_TRANSMIT_DATA:
296 del_timer_sync(&info->se_info.bwi_timer);
297 info->se_info.bwi_active = false;
298 info->se_info.cb(info->se_info.cb_context,
299 skb->data, skb->len, 0);
301 case ST_NCI_EVT_WTX_REQUEST:
302 mod_timer(&info->se_info.bwi_timer, jiffies +
303 msecs_to_jiffies(info->se_info.wt_timeout));
313 * <= 0: driver handled the event, skb consumed
314 * 1: driver does not handle the event, please do standard processing
316 static int st_nci_hci_connectivity_event_received(struct nci_dev *ndev,
321 struct device *dev = &ndev->nfc_dev->dev;
322 struct nfc_evt_transaction *transaction;
324 pr_debug("connectivity gate event: %x\n", event);
327 case ST_NCI_EVT_CONNECTIVITY:
330 case ST_NCI_EVT_TRANSACTION:
331 /* According to specification etsi 102 622
332 * 11.2.2.4 EVT_TRANSACTION Table 52
333 * Description Tag Length
335 * PARAMETERS 82 0 to 255
337 if (skb->len < NFC_MIN_AID_LENGTH + 2 &&
338 skb->data[0] != NFC_EVT_TRANSACTION_AID_TAG)
341 transaction = (struct nfc_evt_transaction *)devm_kzalloc(dev,
342 skb->len - 2, GFP_KERNEL);
344 transaction->aid_len = skb->data[1];
345 memcpy(transaction->aid, &skb->data[2], transaction->aid_len);
347 /* Check next byte is PARAMETERS tag (82) */
348 if (skb->data[transaction->aid_len + 2] !=
349 NFC_EVT_TRANSACTION_PARAMS_TAG)
352 transaction->params_len = skb->data[transaction->aid_len + 3];
353 memcpy(transaction->params, skb->data +
354 transaction->aid_len + 4, transaction->params_len);
356 r = nfc_se_transaction(ndev->nfc_dev, host, transaction);
365 void st_nci_hci_event_received(struct nci_dev *ndev, u8 pipe,
366 u8 event, struct sk_buff *skb)
368 u8 gate = ndev->hci_dev->pipes[pipe].gate;
369 u8 host = ndev->hci_dev->pipes[pipe].host;
372 case NCI_HCI_ADMIN_GATE:
373 st_nci_hci_admin_event_received(ndev, event, skb);
375 case ST_NCI_APDU_READER_GATE:
376 st_nci_hci_apdu_reader_event_received(ndev, event, skb);
378 case ST_NCI_CONNECTIVITY_GATE:
379 st_nci_hci_connectivity_event_received(ndev, host, event,
384 EXPORT_SYMBOL_GPL(st_nci_hci_event_received);
387 void st_nci_hci_cmd_received(struct nci_dev *ndev, u8 pipe, u8 cmd,
390 struct st_nci_info *info = nci_get_drvdata(ndev);
391 u8 gate = ndev->hci_dev->pipes[pipe].gate;
393 pr_debug("cmd: %x\n", cmd);
396 case NCI_HCI_ANY_OPEN_PIPE:
397 if (gate != ST_NCI_APDU_READER_GATE &&
398 ndev->hci_dev->pipes[pipe].host != ST_NCI_UICC_HOST_ID)
399 ndev->hci_dev->count_pipes++;
401 if (ndev->hci_dev->count_pipes ==
402 ndev->hci_dev->expected_pipes) {
403 del_timer_sync(&info->se_info.se_active_timer);
404 info->se_info.se_active = false;
405 ndev->hci_dev->count_pipes = 0;
406 complete(&info->se_info.req_completion);
411 EXPORT_SYMBOL_GPL(st_nci_hci_cmd_received);
414 * Remarks: On some early st_nci firmware, nci_nfcee_mode_set(0)
417 static int st_nci_control_se(struct nci_dev *ndev, u8 se_idx,
420 struct st_nci_info *info = nci_get_drvdata(ndev);
422 struct sk_buff *sk_host_list;
426 case ST_NCI_UICC_HOST_ID:
427 ndev->hci_dev->count_pipes = 0;
428 ndev->hci_dev->expected_pipes = ST_NCI_SE_COUNT_PIPE_UICC;
430 case ST_NCI_ESE_HOST_ID:
431 ndev->hci_dev->count_pipes = 0;
432 ndev->hci_dev->expected_pipes = ST_NCI_SE_COUNT_PIPE_EMBEDDED;
439 * Wait for an EVT_HOT_PLUG in order to
440 * retrieve a relevant host list.
442 reinit_completion(&info->se_info.req_completion);
443 r = nci_nfcee_mode_set(ndev, se_idx, NCI_NFCEE_ENABLE);
444 if (r != NCI_STATUS_OK)
447 mod_timer(&info->se_info.se_active_timer, jiffies +
448 msecs_to_jiffies(ST_NCI_SE_TO_HOT_PLUG));
449 info->se_info.se_active = true;
451 /* Ignore return value and check in any case the host_list */
452 wait_for_completion_interruptible(&info->se_info.req_completion);
454 /* There might be some "collision" after receiving a HOT_PLUG event
455 * This may cause the CLF to not answer to the next hci command.
456 * There is no possible synchronization to prevent this.
457 * Adding a small delay is the only way to solve the issue.
459 usleep_range(3000, 5000);
461 r = nci_hci_get_param(ndev, NCI_HCI_ADMIN_GATE,
462 NCI_HCI_ADMIN_PARAM_HOST_LIST, &sk_host_list);
463 if (r != NCI_HCI_ANY_OK)
466 host_id = sk_host_list->data[sk_host_list->len - 1];
467 kfree_skb(sk_host_list);
468 if (state == ST_NCI_SE_MODE_ON && host_id == se_idx)
470 else if (state == ST_NCI_SE_MODE_OFF && host_id != se_idx)
476 int st_nci_disable_se(struct nci_dev *ndev, u32 se_idx)
480 pr_debug("st_nci_disable_se\n");
482 if (se_idx == NFC_SE_EMBEDDED) {
483 r = nci_hci_send_event(ndev, ST_NCI_APDU_READER_GATE,
484 ST_NCI_EVT_SE_END_OF_APDU_TRANSFER, NULL, 0);
491 EXPORT_SYMBOL_GPL(st_nci_disable_se);
493 int st_nci_enable_se(struct nci_dev *ndev, u32 se_idx)
497 pr_debug("st_nci_enable_se\n");
499 if (se_idx == ST_NCI_HCI_HOST_ID_ESE) {
500 r = nci_hci_send_event(ndev, ST_NCI_APDU_READER_GATE,
501 ST_NCI_EVT_SE_SOFT_RESET, NULL, 0);
508 EXPORT_SYMBOL_GPL(st_nci_enable_se);
510 static int st_nci_hci_network_init(struct nci_dev *ndev)
512 struct core_conn_create_dest_spec_params *dest_params;
513 struct dest_spec_params spec_params;
514 struct nci_conn_info *conn_info;
518 kzalloc(sizeof(struct core_conn_create_dest_spec_params) +
519 sizeof(struct dest_spec_params), GFP_KERNEL);
520 if (dest_params == NULL) {
525 dest_params->type = NCI_DESTINATION_SPECIFIC_PARAM_NFCEE_TYPE;
526 dest_params->length = sizeof(struct dest_spec_params);
527 spec_params.id = ndev->hci_dev->nfcee_id;
528 spec_params.protocol = NCI_NFCEE_INTERFACE_HCI_ACCESS;
529 memcpy(dest_params->value, &spec_params,
530 sizeof(struct dest_spec_params));
531 r = nci_core_conn_create(ndev, NCI_DESTINATION_NFCEE, 1,
532 sizeof(struct core_conn_create_dest_spec_params) +
533 sizeof(struct dest_spec_params),
535 if (r != NCI_STATUS_OK)
536 goto free_dest_params;
538 conn_info = ndev->hci_dev->conn_info;
540 goto free_dest_params;
542 ndev->hci_dev->init_data.gate_count = ARRAY_SIZE(st_nci_gates);
543 memcpy(ndev->hci_dev->init_data.gates, st_nci_gates,
544 sizeof(st_nci_gates));
547 * Session id must include the driver name + i2c bus addr
548 * persistent info to discriminate 2 identical chips
550 dev_num = find_first_zero_bit(dev_mask, ST_NCI_NUM_DEVICES);
551 if (dev_num >= ST_NCI_NUM_DEVICES) {
553 goto free_dest_params;
556 scnprintf(ndev->hci_dev->init_data.session_id,
557 sizeof(ndev->hci_dev->init_data.session_id),
558 "%s%2x", "ST21BH", dev_num);
560 r = nci_hci_dev_session_init(ndev);
561 if (r != NCI_HCI_ANY_OK)
562 goto free_dest_params;
564 r = nci_nfcee_mode_set(ndev, ndev->hci_dev->conn_info->id,
566 if (r != NCI_STATUS_OK)
567 goto free_dest_params;
576 int st_nci_discover_se(struct nci_dev *ndev)
582 pr_debug("st_nci_discover_se\n");
584 r = st_nci_hci_network_init(ndev);
588 param[0] = ST_NCI_UICC_HOST_ID;
589 param[1] = ST_NCI_HCI_HOST_ID_ESE;
590 r = nci_hci_set_param(ndev, NCI_HCI_ADMIN_GATE,
591 NCI_HCI_ADMIN_PARAM_WHITELIST,
592 param, sizeof(param));
593 if (r != NCI_HCI_ANY_OK)
596 r = st_nci_control_se(ndev, ST_NCI_UICC_HOST_ID,
598 if (r == ST_NCI_UICC_HOST_ID) {
599 nfc_add_se(ndev->nfc_dev, ST_NCI_UICC_HOST_ID, NFC_SE_UICC);
603 /* Try to enable eSE in order to check availability */
604 r = st_nci_control_se(ndev, ST_NCI_HCI_HOST_ID_ESE,
606 if (r == ST_NCI_HCI_HOST_ID_ESE) {
607 nfc_add_se(ndev->nfc_dev, ST_NCI_HCI_HOST_ID_ESE,
610 st_nci_se_get_atr(ndev);
615 EXPORT_SYMBOL_GPL(st_nci_discover_se);
617 int st_nci_se_io(struct nci_dev *ndev, u32 se_idx,
618 u8 *apdu, size_t apdu_length,
619 se_io_cb_t cb, void *cb_context)
621 struct st_nci_info *info = nci_get_drvdata(ndev);
626 case ST_NCI_HCI_HOST_ID_ESE:
627 info->se_info.cb = cb;
628 info->se_info.cb_context = cb_context;
629 mod_timer(&info->se_info.bwi_timer, jiffies +
630 msecs_to_jiffies(info->se_info.wt_timeout));
631 info->se_info.bwi_active = true;
632 return nci_hci_send_event(ndev, ST_NCI_APDU_READER_GATE,
633 ST_NCI_EVT_TRANSMIT_DATA, apdu,
639 EXPORT_SYMBOL(st_nci_se_io);
641 static void st_nci_se_wt_timeout(unsigned long data)
644 * No answer from the secure element
645 * within the defined timeout.
646 * Let's send a reset request as recovery procedure.
647 * According to the situation, we first try to send a software reset
648 * to the secure element. If the next command is still not
649 * answering in time, we send to the CLF a secure element hardware
652 /* hardware reset managed through VCC_UICC_OUT power supply */
654 struct st_nci_info *info = (struct st_nci_info *) data;
658 info->se_info.bwi_active = false;
660 if (!info->se_info.xch_error) {
661 info->se_info.xch_error = true;
662 nci_hci_send_event(info->ndlc->ndev, ST_NCI_APDU_READER_GATE,
663 ST_NCI_EVT_SE_SOFT_RESET, NULL, 0);
665 info->se_info.xch_error = false;
666 nci_hci_send_event(info->ndlc->ndev, ST_NCI_DEVICE_MGNT_GATE,
667 ST_NCI_EVT_SE_HARD_RESET, ¶m, 1);
669 info->se_info.cb(info->se_info.cb_context, NULL, 0, -ETIME);
672 static void st_nci_se_activation_timeout(unsigned long data)
674 struct st_nci_info *info = (struct st_nci_info *) data;
678 info->se_info.se_active = false;
680 complete(&info->se_info.req_completion);
683 int st_nci_se_init(struct nci_dev *ndev)
685 struct st_nci_info *info = nci_get_drvdata(ndev);
687 init_completion(&info->se_info.req_completion);
688 /* initialize timers */
689 init_timer(&info->se_info.bwi_timer);
690 info->se_info.bwi_timer.data = (unsigned long)info;
691 info->se_info.bwi_timer.function = st_nci_se_wt_timeout;
692 info->se_info.bwi_active = false;
694 init_timer(&info->se_info.se_active_timer);
695 info->se_info.se_active_timer.data = (unsigned long)info;
696 info->se_info.se_active_timer.function =
697 st_nci_se_activation_timeout;
698 info->se_info.se_active = false;
700 info->se_info.xch_error = false;
702 info->se_info.wt_timeout =
703 ST_NCI_BWI_TO_TIMEOUT(ST_NCI_ATR_DEFAULT_BWI);
707 EXPORT_SYMBOL(st_nci_se_init);
709 void st_nci_se_deinit(struct nci_dev *ndev)
711 struct st_nci_info *info = nci_get_drvdata(ndev);
713 if (info->se_info.bwi_active)
714 del_timer_sync(&info->se_info.bwi_timer);
715 if (info->se_info.se_active)
716 del_timer_sync(&info->se_info.se_active_timer);
718 info->se_info.se_active = false;
719 info->se_info.bwi_active = false;
721 EXPORT_SYMBOL(st_nci_se_deinit);