2 * HCI based Driver for Inside Secure microread NFC Chip
4 * Copyright (C) 2013 Intel Corporation. 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, write to the
17 * Free Software Foundation, Inc.,
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
23 #include <linux/module.h>
24 #include <linux/delay.h>
25 #include <linux/slab.h>
26 #include <linux/crc-ccitt.h>
28 #include <linux/nfc.h>
29 #include <net/nfc/nfc.h>
30 #include <net/nfc/hci.h>
31 #include <net/nfc/llc.h>
33 #include "microread.h"
35 /* Proprietary gates, events, commands and registers */
37 #define MICROREAD_GATE_ID_ADM NFC_HCI_ADMIN_GATE
38 #define MICROREAD_GATE_ID_MGT 0x01
39 #define MICROREAD_GATE_ID_OS 0x02
40 #define MICROREAD_GATE_ID_TESTRF 0x03
41 #define MICROREAD_GATE_ID_LOOPBACK NFC_HCI_LOOPBACK_GATE
42 #define MICROREAD_GATE_ID_IDT NFC_HCI_ID_MGMT_GATE
43 #define MICROREAD_GATE_ID_LMS NFC_HCI_LINK_MGMT_GATE
46 #define MICROREAD_GATE_ID_MREAD_GEN 0x10
47 #define MICROREAD_GATE_ID_MREAD_ISO_B NFC_HCI_RF_READER_B_GATE
48 #define MICROREAD_GATE_ID_MREAD_NFC_T1 0x12
49 #define MICROREAD_GATE_ID_MREAD_ISO_A NFC_HCI_RF_READER_A_GATE
50 #define MICROREAD_GATE_ID_MREAD_NFC_T3 0x14
51 #define MICROREAD_GATE_ID_MREAD_ISO_15_3 0x15
52 #define MICROREAD_GATE_ID_MREAD_ISO_15_2 0x16
53 #define MICROREAD_GATE_ID_MREAD_ISO_B_3 0x17
54 #define MICROREAD_GATE_ID_MREAD_BPRIME 0x18
55 #define MICROREAD_GATE_ID_MREAD_ISO_A_3 0x19
58 #define MICROREAD_GATE_ID_MCARD_GEN 0x20
59 #define MICROREAD_GATE_ID_MCARD_ISO_B 0x21
60 #define MICROREAD_GATE_ID_MCARD_BPRIME 0x22
61 #define MICROREAD_GATE_ID_MCARD_ISO_A 0x23
62 #define MICROREAD_GATE_ID_MCARD_NFC_T3 0x24
63 #define MICROREAD_GATE_ID_MCARD_ISO_15_3 0x25
64 #define MICROREAD_GATE_ID_MCARD_ISO_15_2 0x26
65 #define MICROREAD_GATE_ID_MCARD_ISO_B_2 0x27
66 #define MICROREAD_GATE_ID_MCARD_ISO_CUSTOM 0x28
67 #define MICROREAD_GATE_ID_SECURE_ELEMENT 0x2F
70 #define MICROREAD_GATE_ID_P2P_GEN 0x30
71 #define MICROREAD_GATE_ID_P2P_TARGET 0x31
72 #define MICROREAD_PAR_P2P_TARGET_MODE 0x01
73 #define MICROREAD_PAR_P2P_TARGET_GT 0x04
74 #define MICROREAD_GATE_ID_P2P_INITIATOR 0x32
75 #define MICROREAD_PAR_P2P_INITIATOR_GI 0x01
76 #define MICROREAD_PAR_P2P_INITIATOR_GT 0x03
78 /* Those pipes are created/opened by default in the chip */
79 #define MICROREAD_PIPE_ID_LMS 0x00
80 #define MICROREAD_PIPE_ID_ADMIN 0x01
81 #define MICROREAD_PIPE_ID_MGT 0x02
82 #define MICROREAD_PIPE_ID_OS 0x03
83 #define MICROREAD_PIPE_ID_HDS_LOOPBACK 0x04
84 #define MICROREAD_PIPE_ID_HDS_IDT 0x05
85 #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_B 0x08
86 #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_BPRIME 0x09
87 #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_A 0x0A
88 #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_15_3 0x0B
89 #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_15_2 0x0C
90 #define MICROREAD_PIPE_ID_HDS_MCARD_NFC_T3 0x0D
91 #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_B_2 0x0E
92 #define MICROREAD_PIPE_ID_HDS_MCARD_CUSTOM 0x0F
93 #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_B 0x10
94 #define MICROREAD_PIPE_ID_HDS_MREAD_NFC_T1 0x11
95 #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_A 0x12
96 #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_15_3 0x13
97 #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_15_2 0x14
98 #define MICROREAD_PIPE_ID_HDS_MREAD_NFC_T3 0x15
99 #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_B_3 0x16
100 #define MICROREAD_PIPE_ID_HDS_MREAD_BPRIME 0x17
101 #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_A_3 0x18
102 #define MICROREAD_PIPE_ID_HDS_MREAD_GEN 0x1B
103 #define MICROREAD_PIPE_ID_HDS_STACKED_ELEMENT 0x1C
104 #define MICROREAD_PIPE_ID_HDS_INSTANCES 0x1D
105 #define MICROREAD_PIPE_ID_HDS_TESTRF 0x1E
106 #define MICROREAD_PIPE_ID_HDS_P2P_TARGET 0x1F
107 #define MICROREAD_PIPE_ID_HDS_P2P_INITIATOR 0x20
110 #define MICROREAD_EVT_MREAD_DISCOVERY_OCCURED NFC_HCI_EVT_TARGET_DISCOVERED
111 #define MICROREAD_EVT_MREAD_CARD_FOUND 0x3D
112 #define MICROREAD_EMCF_A_ATQA 0
113 #define MICROREAD_EMCF_A_SAK 2
114 #define MICROREAD_EMCF_A_LEN 3
115 #define MICROREAD_EMCF_A_UID 4
116 #define MICROREAD_EMCF_A3_ATQA 0
117 #define MICROREAD_EMCF_A3_SAK 2
118 #define MICROREAD_EMCF_A3_LEN 3
119 #define MICROREAD_EMCF_A3_UID 4
120 #define MICROREAD_EMCF_B_UID 0
121 #define MICROREAD_EMCF_T1_ATQA 0
122 #define MICROREAD_EMCF_T1_UID 4
123 #define MICROREAD_EMCF_T3_UID 0
124 #define MICROREAD_EVT_MREAD_DISCOVERY_START NFC_HCI_EVT_READER_REQUESTED
125 #define MICROREAD_EVT_MREAD_DISCOVERY_START_SOME 0x3E
126 #define MICROREAD_EVT_MREAD_DISCOVERY_STOP NFC_HCI_EVT_END_OPERATION
127 #define MICROREAD_EVT_MREAD_SIM_REQUESTS 0x3F
128 #define MICROREAD_EVT_MCARD_EXCHANGE NFC_HCI_EVT_TARGET_DISCOVERED
129 #define MICROREAD_EVT_P2P_INITIATOR_EXCHANGE_TO_RF 0x20
130 #define MICROREAD_EVT_P2P_INITIATOR_EXCHANGE_FROM_RF 0x21
131 #define MICROREAD_EVT_MCARD_FIELD_ON 0x11
132 #define MICROREAD_EVT_P2P_TARGET_ACTIVATED 0x13
133 #define MICROREAD_EVT_P2P_TARGET_DEACTIVATED 0x12
134 #define MICROREAD_EVT_MCARD_FIELD_OFF 0x14
137 #define MICROREAD_CMD_MREAD_EXCHANGE 0x10
138 #define MICROREAD_CMD_MREAD_SUBSCRIBE 0x3F
141 #define MICROREAD_ELT_ID_HDS NFC_HCI_TERMINAL_HOST_ID
142 #define MICROREAD_ELT_ID_SIM NFC_HCI_UICC_HOST_ID
143 #define MICROREAD_ELT_ID_SE1 0x03
144 #define MICROREAD_ELT_ID_SE2 0x04
145 #define MICROREAD_ELT_ID_SE3 0x05
147 static struct nfc_hci_gate microread_gates[] = {
148 {MICROREAD_GATE_ID_ADM, MICROREAD_PIPE_ID_ADMIN},
149 {MICROREAD_GATE_ID_LOOPBACK, MICROREAD_PIPE_ID_HDS_LOOPBACK},
150 {MICROREAD_GATE_ID_IDT, MICROREAD_PIPE_ID_HDS_IDT},
151 {MICROREAD_GATE_ID_LMS, MICROREAD_PIPE_ID_LMS},
152 {MICROREAD_GATE_ID_MREAD_ISO_B, MICROREAD_PIPE_ID_HDS_MREAD_ISO_B},
153 {MICROREAD_GATE_ID_MREAD_ISO_A, MICROREAD_PIPE_ID_HDS_MREAD_ISO_A},
154 {MICROREAD_GATE_ID_MREAD_ISO_A_3, MICROREAD_PIPE_ID_HDS_MREAD_ISO_A_3},
155 {MICROREAD_GATE_ID_MGT, MICROREAD_PIPE_ID_MGT},
156 {MICROREAD_GATE_ID_OS, MICROREAD_PIPE_ID_OS},
157 {MICROREAD_GATE_ID_MREAD_NFC_T1, MICROREAD_PIPE_ID_HDS_MREAD_NFC_T1},
158 {MICROREAD_GATE_ID_MREAD_NFC_T3, MICROREAD_PIPE_ID_HDS_MREAD_NFC_T3},
159 {MICROREAD_GATE_ID_P2P_TARGET, MICROREAD_PIPE_ID_HDS_P2P_TARGET},
160 {MICROREAD_GATE_ID_P2P_INITIATOR, MICROREAD_PIPE_ID_HDS_P2P_INITIATOR}
163 /* Largest headroom needed for outgoing custom commands */
164 #define MICROREAD_CMDS_HEADROOM 2
165 #define MICROREAD_CMD_TAILROOM 2
167 struct microread_info {
168 struct nfc_phy_ops *phy_ops;
171 struct nfc_hci_dev *hdev;
174 data_exchange_cb_t async_cb;
175 void *async_cb_context;
178 static int microread_open(struct nfc_hci_dev *hdev)
180 struct microread_info *info = nfc_hci_get_clientdata(hdev);
182 return info->phy_ops->enable(info->phy_id);
185 static void microread_close(struct nfc_hci_dev *hdev)
187 struct microread_info *info = nfc_hci_get_clientdata(hdev);
189 info->phy_ops->disable(info->phy_id);
192 static int microread_hci_ready(struct nfc_hci_dev *hdev)
198 r = nfc_hci_send_cmd(hdev, MICROREAD_GATE_ID_MREAD_ISO_A,
199 MICROREAD_CMD_MREAD_SUBSCRIBE, param, 1, NULL);
203 r = nfc_hci_send_cmd(hdev, MICROREAD_GATE_ID_MREAD_ISO_A_3,
204 MICROREAD_CMD_MREAD_SUBSCRIBE, NULL, 0, NULL);
211 r = nfc_hci_send_cmd(hdev, MICROREAD_GATE_ID_MREAD_ISO_B,
212 MICROREAD_CMD_MREAD_SUBSCRIBE, param, 3, NULL);
216 r = nfc_hci_send_cmd(hdev, MICROREAD_GATE_ID_MREAD_NFC_T1,
217 MICROREAD_CMD_MREAD_SUBSCRIBE, NULL, 0, NULL);
225 r = nfc_hci_send_cmd(hdev, MICROREAD_GATE_ID_MREAD_NFC_T3,
226 MICROREAD_CMD_MREAD_SUBSCRIBE, param, 4, NULL);
231 static int microread_xmit(struct nfc_hci_dev *hdev, struct sk_buff *skb)
233 struct microread_info *info = nfc_hci_get_clientdata(hdev);
235 return info->phy_ops->write(info->phy_id, skb);
238 static int microread_start_poll(struct nfc_hci_dev *hdev,
239 u32 im_protocols, u32 tm_protocols)
249 if (im_protocols & NFC_PROTO_ISO14443_MASK)
250 param[0] |= (1 << 2);
252 if (im_protocols & NFC_PROTO_ISO14443_B_MASK)
255 if (im_protocols & NFC_PROTO_MIFARE_MASK)
258 if (im_protocols & NFC_PROTO_JEWEL_MASK)
259 param[0] |= (1 << 1);
261 if (im_protocols & NFC_PROTO_FELICA_MASK)
262 param[0] |= (1 << 5);
264 if (im_protocols & NFC_PROTO_NFC_DEP_MASK)
265 param[1] |= (1 << 1);
267 if ((im_protocols | tm_protocols) & NFC_PROTO_NFC_DEP_MASK) {
268 hdev->gb = nfc_get_local_general_bytes(hdev->ndev,
270 if (hdev->gb == NULL || hdev->gb_len == 0) {
271 im_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
272 tm_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
276 r = nfc_hci_send_event(hdev, MICROREAD_GATE_ID_MREAD_ISO_A,
277 MICROREAD_EVT_MREAD_DISCOVERY_STOP, NULL, 0);
282 r = nfc_hci_set_param(hdev, MICROREAD_GATE_ID_P2P_TARGET,
283 MICROREAD_PAR_P2P_TARGET_MODE, &mode, 1);
287 if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
288 r = nfc_hci_set_param(hdev, MICROREAD_GATE_ID_P2P_INITIATOR,
289 MICROREAD_PAR_P2P_INITIATOR_GI,
290 hdev->gb, hdev->gb_len);
295 if (tm_protocols & NFC_PROTO_NFC_DEP_MASK) {
296 r = nfc_hci_set_param(hdev, MICROREAD_GATE_ID_P2P_TARGET,
297 MICROREAD_PAR_P2P_TARGET_GT,
298 hdev->gb, hdev->gb_len);
303 r = nfc_hci_set_param(hdev, MICROREAD_GATE_ID_P2P_TARGET,
304 MICROREAD_PAR_P2P_TARGET_MODE, &mode, 1);
309 return nfc_hci_send_event(hdev, MICROREAD_GATE_ID_MREAD_ISO_A,
310 MICROREAD_EVT_MREAD_DISCOVERY_START_SOME,
314 static int microread_dep_link_up(struct nfc_hci_dev *hdev,
315 struct nfc_target *target, u8 comm_mode,
316 u8 *gb, size_t gb_len)
318 struct sk_buff *rgb_skb = NULL;
321 r = nfc_hci_get_param(hdev, target->hci_reader_gate,
322 MICROREAD_PAR_P2P_INITIATOR_GT, &rgb_skb);
326 if (rgb_skb->len == 0 || rgb_skb->len > NFC_GB_MAXSIZE) {
331 r = nfc_set_remote_general_bytes(hdev->ndev, rgb_skb->data,
334 r = nfc_dep_link_is_up(hdev->ndev, target->idx, comm_mode,
342 static int microread_dep_link_down(struct nfc_hci_dev *hdev)
344 return nfc_hci_send_event(hdev, MICROREAD_GATE_ID_P2P_INITIATOR,
345 MICROREAD_EVT_MREAD_DISCOVERY_STOP, NULL, 0);
348 static int microread_target_from_gate(struct nfc_hci_dev *hdev, u8 gate,
349 struct nfc_target *target)
352 case MICROREAD_GATE_ID_P2P_INITIATOR:
353 target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
362 static int microread_complete_target_discovered(struct nfc_hci_dev *hdev,
364 struct nfc_target *target)
369 #define MICROREAD_CB_TYPE_READER_ALL 1
371 static void microread_im_transceive_cb(void *context, struct sk_buff *skb,
374 struct microread_info *info = context;
376 switch (info->async_cb_type) {
377 case MICROREAD_CB_TYPE_READER_ALL:
382 info->async_cb(info->async_cb_context, NULL,
387 if (skb->data[skb->len - 1] != 0) {
388 err = nfc_hci_result_to_errno(
389 skb->data[skb->len - 1]);
391 info->async_cb(info->async_cb_context, NULL,
396 skb_trim(skb, skb->len - 1); /* RF Error ind. */
398 info->async_cb(info->async_cb_context, skb, err);
409 * <= 0: driver handled the data exchange
410 * 1: driver doesn't especially handle, please do standard processing
412 static int microread_im_transceive(struct nfc_hci_dev *hdev,
413 struct nfc_target *target,
414 struct sk_buff *skb, data_exchange_cb_t cb,
417 struct microread_info *info = nfc_hci_get_clientdata(hdev);
421 pr_info("data exchange to gate 0x%x\n", target->hci_reader_gate);
423 if (target->hci_reader_gate == MICROREAD_GATE_ID_P2P_INITIATOR) {
424 *skb_push(skb, 1) = 0;
426 return nfc_hci_send_event(hdev, target->hci_reader_gate,
427 MICROREAD_EVT_P2P_INITIATOR_EXCHANGE_TO_RF,
428 skb->data, skb->len);
431 switch (target->hci_reader_gate) {
432 case MICROREAD_GATE_ID_MREAD_ISO_A:
435 case MICROREAD_GATE_ID_MREAD_ISO_A_3:
438 case MICROREAD_GATE_ID_MREAD_ISO_B:
441 case MICROREAD_GATE_ID_MREAD_NFC_T1:
444 crc = crc_ccitt(0xffff, skb->data, skb->len);
446 *skb_put(skb, 1) = crc & 0xff;
447 *skb_put(skb, 1) = crc >> 8;
449 case MICROREAD_GATE_ID_MREAD_NFC_T3:
453 pr_info("Abort im_transceive to invalid gate 0x%x\n",
454 target->hci_reader_gate);
458 *skb_push(skb, 1) = control_bits;
460 info->async_cb_type = MICROREAD_CB_TYPE_READER_ALL;
462 info->async_cb_context = cb_context;
464 return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
465 MICROREAD_CMD_MREAD_EXCHANGE,
467 microread_im_transceive_cb, info);
470 static int microread_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb)
474 r = nfc_hci_send_event(hdev, MICROREAD_GATE_ID_P2P_TARGET,
475 MICROREAD_EVT_MCARD_EXCHANGE,
476 skb->data, skb->len);
483 static void microread_target_discovered(struct nfc_hci_dev *hdev, u8 gate,
486 struct nfc_target *targets;
489 pr_info("target discovered to gate 0x%x\n", gate);
491 targets = kzalloc(sizeof(struct nfc_target), GFP_KERNEL);
492 if (targets == NULL) {
497 targets->hci_reader_gate = gate;
500 case MICROREAD_GATE_ID_MREAD_ISO_A:
501 targets->supported_protocols =
502 nfc_hci_sak_to_protocol(skb->data[MICROREAD_EMCF_A_SAK]);
504 be16_to_cpu(*(u16 *)&skb->data[MICROREAD_EMCF_A_ATQA]);
505 targets->sel_res = skb->data[MICROREAD_EMCF_A_SAK];
506 memcpy(targets->nfcid1, &skb->data[MICROREAD_EMCF_A_UID],
507 skb->data[MICROREAD_EMCF_A_LEN]);
508 targets->nfcid1_len = skb->data[MICROREAD_EMCF_A_LEN];
510 case MICROREAD_GATE_ID_MREAD_ISO_A_3:
511 targets->supported_protocols =
512 nfc_hci_sak_to_protocol(skb->data[MICROREAD_EMCF_A3_SAK]);
514 be16_to_cpu(*(u16 *)&skb->data[MICROREAD_EMCF_A3_ATQA]);
515 targets->sel_res = skb->data[MICROREAD_EMCF_A3_SAK];
516 memcpy(targets->nfcid1, &skb->data[MICROREAD_EMCF_A3_UID],
517 skb->data[MICROREAD_EMCF_A3_LEN]);
518 targets->nfcid1_len = skb->data[MICROREAD_EMCF_A3_LEN];
520 case MICROREAD_GATE_ID_MREAD_ISO_B:
521 targets->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
522 memcpy(targets->nfcid1, &skb->data[MICROREAD_EMCF_B_UID], 4);
523 targets->nfcid1_len = 4;
525 case MICROREAD_GATE_ID_MREAD_NFC_T1:
526 targets->supported_protocols = NFC_PROTO_JEWEL_MASK;
528 le16_to_cpu(*(u16 *)&skb->data[MICROREAD_EMCF_T1_ATQA]);
529 memcpy(targets->nfcid1, &skb->data[MICROREAD_EMCF_T1_UID], 4);
530 targets->nfcid1_len = 4;
532 case MICROREAD_GATE_ID_MREAD_NFC_T3:
533 targets->supported_protocols = NFC_PROTO_FELICA_MASK;
534 memcpy(targets->nfcid1, &skb->data[MICROREAD_EMCF_T3_UID], 8);
535 targets->nfcid1_len = 8;
538 pr_info("discard target discovered to gate 0x%x\n", gate);
542 r = nfc_targets_found(hdev->ndev, targets, 1);
551 pr_err("Failed to handle discovered target err=%d\n", r);
554 static int microread_event_received(struct nfc_hci_dev *hdev, u8 gate,
555 u8 event, struct sk_buff *skb)
560 pr_info("Microread received event 0x%x to gate 0x%x\n", event, gate);
563 case MICROREAD_EVT_MREAD_CARD_FOUND:
564 microread_target_discovered(hdev, gate, skb);
567 case MICROREAD_EVT_P2P_INITIATOR_EXCHANGE_FROM_RF:
573 if (skb->data[skb->len - 1]) {
578 skb_trim(skb, skb->len - 1);
580 r = nfc_tm_data_received(hdev->ndev, skb);
583 case MICROREAD_EVT_MCARD_FIELD_ON:
584 case MICROREAD_EVT_MCARD_FIELD_OFF:
588 case MICROREAD_EVT_P2P_TARGET_ACTIVATED:
589 r = nfc_tm_activated(hdev->ndev, NFC_PROTO_NFC_DEP_MASK,
590 NFC_COMM_PASSIVE, skb->data,
596 case MICROREAD_EVT_MCARD_EXCHANGE:
602 if (skb->data[skb->len-1]) {
607 skb_trim(skb, skb->len - 1);
609 r = nfc_tm_data_received(hdev->ndev, skb);
612 case MICROREAD_EVT_P2P_TARGET_DEACTIVATED:
616 r = nfc_hci_set_param(hdev, MICROREAD_GATE_ID_P2P_TARGET,
617 MICROREAD_PAR_P2P_TARGET_MODE, &mode, 1);
621 r = nfc_hci_send_event(hdev, gate,
622 MICROREAD_EVT_MREAD_DISCOVERY_STOP, NULL,
633 static struct nfc_hci_ops microread_hci_ops = {
634 .open = microread_open,
635 .close = microread_close,
636 .hci_ready = microread_hci_ready,
637 .xmit = microread_xmit,
638 .start_poll = microread_start_poll,
639 .dep_link_up = microread_dep_link_up,
640 .dep_link_down = microread_dep_link_down,
641 .target_from_gate = microread_target_from_gate,
642 .complete_target_discovered = microread_complete_target_discovered,
643 .im_transceive = microread_im_transceive,
644 .tm_send = microread_tm_send,
645 .check_presence = NULL,
646 .event_received = microread_event_received,
649 int microread_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name,
650 int phy_headroom, int phy_tailroom, int phy_payload,
651 struct nfc_hci_dev **hdev)
653 struct microread_info *info;
654 unsigned long quirks = 0;
656 struct nfc_hci_init_data init_data;
659 info = kzalloc(sizeof(struct microread_info), GFP_KERNEL);
665 info->phy_ops = phy_ops;
666 info->phy_id = phy_id;
668 init_data.gate_count = ARRAY_SIZE(microread_gates);
669 memcpy(init_data.gates, microread_gates, sizeof(microread_gates));
671 strcpy(init_data.session_id, "MICROREA");
673 set_bit(NFC_HCI_QUIRK_SHORT_CLEAR, &quirks);
675 protocols = NFC_PROTO_JEWEL_MASK |
676 NFC_PROTO_MIFARE_MASK |
677 NFC_PROTO_FELICA_MASK |
678 NFC_PROTO_ISO14443_MASK |
679 NFC_PROTO_ISO14443_B_MASK |
680 NFC_PROTO_NFC_DEP_MASK;
682 info->hdev = nfc_hci_allocate_device(µread_hci_ops, &init_data,
683 quirks, protocols, llc_name,
685 MICROREAD_CMDS_HEADROOM,
687 MICROREAD_CMD_TAILROOM,
690 pr_err("Cannot allocate nfc hdev\n");
695 nfc_hci_set_clientdata(info->hdev, info);
697 r = nfc_hci_register_device(info->hdev);
706 nfc_hci_free_device(info->hdev);
714 EXPORT_SYMBOL(microread_probe);
716 void microread_remove(struct nfc_hci_dev *hdev)
718 struct microread_info *info = nfc_hci_get_clientdata(hdev);
720 nfc_hci_unregister_device(hdev);
721 nfc_hci_free_device(hdev);
724 EXPORT_SYMBOL(microread_remove);
726 MODULE_LICENSE("GPL");
727 MODULE_DESCRIPTION(DRIVER_DESC);