2 * HCI based Driver for NXP PN544 NFC Chip
4 * Copyright (C) 2012 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, see <http://www.gnu.org/licenses/>.
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21 #include <linux/delay.h>
22 #include <linux/slab.h>
23 #include <linux/module.h>
25 #include <linux/nfc.h>
26 #include <net/nfc/hci.h>
27 #include <net/nfc/llc.h>
31 /* Timing restrictions (ms) */
32 #define PN544_HCI_RESETVEN_TIME 30
40 #define FULL_VERSION_LEN 11
42 /* Proprietary commands */
43 #define PN544_WRITE 0x3f
44 #define PN544_TEST_SWP 0x21
46 /* Proprietary gates, events, commands and registers */
48 /* NFC_HCI_RF_READER_A_GATE additional registers and commands */
49 #define PN544_RF_READER_A_AUTO_ACTIVATION 0x10
50 #define PN544_RF_READER_A_CMD_CONTINUE_ACTIVATION 0x12
51 #define PN544_MIFARE_CMD 0x21
53 /* Commands that apply to all RF readers */
54 #define PN544_RF_READER_CMD_PRESENCE_CHECK 0x30
55 #define PN544_RF_READER_CMD_ACTIVATE_NEXT 0x32
57 /* NFC_HCI_ID_MGMT_GATE additional registers */
58 #define PN544_ID_MGMT_FULL_VERSION_SW 0x10
60 #define PN544_RF_READER_ISO15693_GATE 0x12
62 #define PN544_RF_READER_F_GATE 0x14
63 #define PN544_FELICA_ID 0x04
64 #define PN544_FELICA_RAW 0x20
66 #define PN544_RF_READER_JEWEL_GATE 0x15
67 #define PN544_JEWEL_RAW_CMD 0x23
69 #define PN544_RF_READER_NFCIP1_INITIATOR_GATE 0x30
70 #define PN544_RF_READER_NFCIP1_TARGET_GATE 0x31
72 #define PN544_SYS_MGMT_GATE 0x90
73 #define PN544_SYS_MGMT_INFO_NOTIFICATION 0x02
75 #define PN544_POLLING_LOOP_MGMT_GATE 0x94
76 #define PN544_DEP_MODE 0x01
77 #define PN544_DEP_ATR_REQ 0x02
78 #define PN544_DEP_ATR_RES 0x03
79 #define PN544_DEP_MERGE 0x0D
80 #define PN544_PL_RDPHASES 0x06
81 #define PN544_PL_EMULATION 0x07
82 #define PN544_PL_NFCT_DEACTIVATED 0x09
84 #define PN544_SWP_MGMT_GATE 0xA0
85 #define PN544_SWP_DEFAULT_MODE 0x01
87 #define PN544_NFC_WI_MGMT_GATE 0xA1
88 #define PN544_NFC_ESE_DEFAULT_MODE 0x01
90 #define PN544_HCI_EVT_SND_DATA 0x01
91 #define PN544_HCI_EVT_ACTIVATED 0x02
92 #define PN544_HCI_EVT_DEACTIVATED 0x03
93 #define PN544_HCI_EVT_RCV_DATA 0x04
94 #define PN544_HCI_EVT_CONTINUE_MI 0x05
95 #define PN544_HCI_EVT_SWITCH_MODE 0x03
97 #define PN544_HCI_CMD_ATTREQUEST 0x12
98 #define PN544_HCI_CMD_CONTINUE_ACTIVATION 0x13
100 static struct nfc_hci_gate pn544_gates[] = {
101 {NFC_HCI_ADMIN_GATE, NFC_HCI_INVALID_PIPE},
102 {NFC_HCI_LOOPBACK_GATE, NFC_HCI_INVALID_PIPE},
103 {NFC_HCI_ID_MGMT_GATE, NFC_HCI_INVALID_PIPE},
104 {NFC_HCI_LINK_MGMT_GATE, NFC_HCI_INVALID_PIPE},
105 {NFC_HCI_RF_READER_B_GATE, NFC_HCI_INVALID_PIPE},
106 {NFC_HCI_RF_READER_A_GATE, NFC_HCI_INVALID_PIPE},
107 {PN544_SYS_MGMT_GATE, NFC_HCI_INVALID_PIPE},
108 {PN544_SWP_MGMT_GATE, NFC_HCI_INVALID_PIPE},
109 {PN544_POLLING_LOOP_MGMT_GATE, NFC_HCI_INVALID_PIPE},
110 {PN544_NFC_WI_MGMT_GATE, NFC_HCI_INVALID_PIPE},
111 {PN544_RF_READER_F_GATE, NFC_HCI_INVALID_PIPE},
112 {PN544_RF_READER_JEWEL_GATE, NFC_HCI_INVALID_PIPE},
113 {PN544_RF_READER_ISO15693_GATE, NFC_HCI_INVALID_PIPE},
114 {PN544_RF_READER_NFCIP1_INITIATOR_GATE, NFC_HCI_INVALID_PIPE},
115 {PN544_RF_READER_NFCIP1_TARGET_GATE, NFC_HCI_INVALID_PIPE}
118 /* Largest headroom needed for outgoing custom commands */
119 #define PN544_CMDS_HEADROOM 2
121 struct pn544_hci_info {
122 struct nfc_phy_ops *phy_ops;
125 struct nfc_hci_dev *hdev;
127 enum pn544_state state;
129 struct mutex info_lock;
132 data_exchange_cb_t async_cb;
133 void *async_cb_context;
135 fw_download_t fw_download;
138 static int pn544_hci_open(struct nfc_hci_dev *hdev)
140 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
143 mutex_lock(&info->info_lock);
145 if (info->state != PN544_ST_COLD) {
150 r = info->phy_ops->enable(info->phy_id);
153 info->state = PN544_ST_READY;
156 mutex_unlock(&info->info_lock);
160 static void pn544_hci_close(struct nfc_hci_dev *hdev)
162 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
164 mutex_lock(&info->info_lock);
166 if (info->state == PN544_ST_COLD)
169 info->phy_ops->disable(info->phy_id);
171 info->state = PN544_ST_COLD;
174 mutex_unlock(&info->info_lock);
177 static int pn544_hci_ready(struct nfc_hci_dev *hdev)
180 static struct hw_config {
184 {{0x9f, 0x9a}, 0x00},
186 {{0x98, 0x10}, 0xbc},
188 {{0x9e, 0x71}, 0x00},
190 {{0x98, 0x09}, 0x00},
192 {{0x9e, 0xb4}, 0x00},
194 {{0x9c, 0x01}, 0x08},
196 {{0x9e, 0xaa}, 0x01},
198 {{0x9b, 0xd1}, 0x17},
199 {{0x9b, 0xd2}, 0x58},
200 {{0x9b, 0xd3}, 0x10},
201 {{0x9b, 0xd4}, 0x47},
202 {{0x9b, 0xd5}, 0x0c},
203 {{0x9b, 0xd6}, 0x37},
204 {{0x9b, 0xdd}, 0x33},
206 {{0x9b, 0x84}, 0x00},
207 {{0x99, 0x81}, 0x79},
208 {{0x99, 0x31}, 0x79},
210 {{0x98, 0x00}, 0x3f},
212 {{0x9f, 0x09}, 0x02},
214 {{0x9f, 0x0a}, 0x05},
216 {{0x9e, 0xd1}, 0xa1},
217 {{0x99, 0x23}, 0x01},
219 {{0x9e, 0x74}, 0x00},
220 {{0x9e, 0x90}, 0x00},
221 {{0x9f, 0x28}, 0x10},
223 {{0x9f, 0x35}, 0x04},
225 {{0x9f, 0x36}, 0x11},
227 {{0x9c, 0x31}, 0x00},
229 {{0x9c, 0x32}, 0x00},
231 {{0x9c, 0x19}, 0x0a},
233 {{0x9c, 0x1a}, 0x0a},
235 {{0x9c, 0x0c}, 0x00},
237 {{0x9c, 0x0d}, 0x00},
239 {{0x9c, 0x12}, 0x00},
241 {{0x9c, 0x13}, 0x00},
243 {{0x98, 0xa2}, 0x09},
245 {{0x98, 0x93}, 0x00},
247 {{0x98, 0x7d}, 0x08},
248 {{0x98, 0x7e}, 0x00},
249 {{0x9f, 0xc8}, 0x00},
251 struct hw_config *p = hw_config;
252 int count = ARRAY_SIZE(hw_config);
253 struct sk_buff *res_skb;
259 param[1] = p->adr[0];
260 param[2] = p->adr[1];
263 r = nfc_hci_send_cmd(hdev, PN544_SYS_MGMT_GATE, PN544_WRITE,
268 if (res_skb->len != 1) {
273 if (res_skb->data[0] != p->value) {
283 param[0] = NFC_HCI_UICC_HOST_ID;
284 r = nfc_hci_set_param(hdev, NFC_HCI_ADMIN_GATE,
285 NFC_HCI_ADMIN_WHITELIST, param, 1);
290 r = nfc_hci_set_param(hdev, PN544_SYS_MGMT_GATE,
291 PN544_SYS_MGMT_INFO_NOTIFICATION, param, 1);
296 r = nfc_hci_set_param(hdev, NFC_HCI_RF_READER_A_GATE,
297 PN544_RF_READER_A_AUTO_ACTIVATION, param, 1);
301 r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
302 NFC_HCI_EVT_END_OPERATION, NULL, 0);
307 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
308 PN544_PL_NFCT_DEACTIVATED, param, 1);
313 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
314 PN544_PL_RDPHASES, param, 1);
318 r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
319 PN544_ID_MGMT_FULL_VERSION_SW, &skb);
323 if (skb->len != FULL_VERSION_LEN) {
328 print_hex_dump(KERN_DEBUG, "FULL VERSION SOFTWARE INFO: ",
329 DUMP_PREFIX_NONE, 16, 1,
330 skb->data, FULL_VERSION_LEN, false);
337 static int pn544_hci_xmit(struct nfc_hci_dev *hdev, struct sk_buff *skb)
339 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
341 return info->phy_ops->write(info->phy_id, skb);
344 static int pn544_hci_start_poll(struct nfc_hci_dev *hdev,
345 u32 im_protocols, u32 tm_protocols)
351 u8 i_mode = 0x3f; /* Enable all supported modes */
353 u8 t_merge = 0x01; /* Enable merge by default */
355 pr_info(DRIVER_DESC ": %s protocols 0x%x 0x%x\n",
356 __func__, im_protocols, tm_protocols);
358 r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
359 NFC_HCI_EVT_END_OPERATION, NULL, 0);
365 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
366 PN544_PL_EMULATION, duration, 2);
371 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
372 PN544_PL_NFCT_DEACTIVATED, &activated, 1);
376 if (im_protocols & (NFC_PROTO_ISO14443_MASK | NFC_PROTO_MIFARE_MASK |
377 NFC_PROTO_JEWEL_MASK))
378 phases |= 1; /* Type A */
379 if (im_protocols & NFC_PROTO_FELICA_MASK) {
380 phases |= (1 << 2); /* Type F 212 */
381 phases |= (1 << 3); /* Type F 424 */
384 phases |= (1 << 5); /* NFC active */
386 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
387 PN544_PL_RDPHASES, &phases, 1);
391 if ((im_protocols | tm_protocols) & NFC_PROTO_NFC_DEP_MASK) {
392 hdev->gb = nfc_get_local_general_bytes(hdev->ndev,
394 pr_debug("generate local bytes %p\n", hdev->gb);
395 if (hdev->gb == NULL || hdev->gb_len == 0) {
396 im_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
397 tm_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
401 if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
402 r = nfc_hci_send_event(hdev,
403 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
404 NFC_HCI_EVT_END_OPERATION, NULL, 0);
408 r = nfc_hci_set_param(hdev,
409 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
410 PN544_DEP_MODE, &i_mode, 1);
414 r = nfc_hci_set_param(hdev,
415 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
416 PN544_DEP_ATR_REQ, hdev->gb, hdev->gb_len);
420 r = nfc_hci_send_event(hdev,
421 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
422 NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
424 nfc_hci_send_event(hdev,
425 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
426 NFC_HCI_EVT_END_OPERATION, NULL, 0);
429 if (tm_protocols & NFC_PROTO_NFC_DEP_MASK) {
430 r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
431 PN544_DEP_MODE, &t_mode, 1);
435 r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
436 PN544_DEP_ATR_RES, hdev->gb, hdev->gb_len);
440 r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
441 PN544_DEP_MERGE, &t_merge, 1);
446 r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
447 NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
449 nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
450 NFC_HCI_EVT_END_OPERATION, NULL, 0);
455 static int pn544_hci_dep_link_up(struct nfc_hci_dev *hdev,
456 struct nfc_target *target, u8 comm_mode,
457 u8 *gb, size_t gb_len)
459 struct sk_buff *rgb_skb = NULL;
462 r = nfc_hci_get_param(hdev, target->hci_reader_gate,
463 PN544_DEP_ATR_RES, &rgb_skb);
467 if (rgb_skb->len == 0 || rgb_skb->len > NFC_GB_MAXSIZE) {
471 print_hex_dump(KERN_DEBUG, "remote gb: ", DUMP_PREFIX_OFFSET,
472 16, 1, rgb_skb->data, rgb_skb->len, true);
474 r = nfc_set_remote_general_bytes(hdev->ndev, rgb_skb->data,
478 r = nfc_dep_link_is_up(hdev->ndev, target->idx, comm_mode,
485 static int pn544_hci_dep_link_down(struct nfc_hci_dev *hdev)
488 return nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_INITIATOR_GATE,
489 NFC_HCI_EVT_END_OPERATION, NULL, 0);
492 static int pn544_hci_target_from_gate(struct nfc_hci_dev *hdev, u8 gate,
493 struct nfc_target *target)
496 case PN544_RF_READER_F_GATE:
497 target->supported_protocols = NFC_PROTO_FELICA_MASK;
499 case PN544_RF_READER_JEWEL_GATE:
500 target->supported_protocols = NFC_PROTO_JEWEL_MASK;
501 target->sens_res = 0x0c00;
503 case PN544_RF_READER_NFCIP1_INITIATOR_GATE:
504 target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
513 static int pn544_hci_complete_target_discovered(struct nfc_hci_dev *hdev,
515 struct nfc_target *target)
517 struct sk_buff *uid_skb;
520 if (gate == PN544_RF_READER_NFCIP1_INITIATOR_GATE)
523 if (target->supported_protocols & NFC_PROTO_NFC_DEP_MASK) {
524 r = nfc_hci_send_cmd(hdev,
525 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
526 PN544_HCI_CMD_CONTINUE_ACTIVATION, NULL, 0, NULL);
530 target->hci_reader_gate = PN544_RF_READER_NFCIP1_INITIATOR_GATE;
531 } else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
532 if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
533 target->nfcid1_len != 10)
536 r = nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
537 PN544_RF_READER_CMD_ACTIVATE_NEXT,
538 target->nfcid1, target->nfcid1_len, NULL);
539 } else if (target->supported_protocols & NFC_PROTO_FELICA_MASK) {
540 r = nfc_hci_get_param(hdev, PN544_RF_READER_F_GATE,
541 PN544_FELICA_ID, &uid_skb);
545 if (uid_skb->len != 8) {
550 /* Type F NFC-DEP IDm has prefix 0x01FE */
551 if ((uid_skb->data[0] == 0x01) && (uid_skb->data[1] == 0xfe)) {
553 r = nfc_hci_send_cmd(hdev,
554 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
555 PN544_HCI_CMD_CONTINUE_ACTIVATION,
560 target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
561 target->hci_reader_gate =
562 PN544_RF_READER_NFCIP1_INITIATOR_GATE;
564 r = nfc_hci_send_cmd(hdev, PN544_RF_READER_F_GATE,
565 PN544_RF_READER_CMD_ACTIVATE_NEXT,
566 uid_skb->data, uid_skb->len, NULL);
569 } else if (target->supported_protocols & NFC_PROTO_ISO14443_MASK) {
571 * TODO: maybe other ISO 14443 require some kind of continue
572 * activation, but for now we've seen only this one below.
574 if (target->sens_res == 0x4403) /* Type 4 Mifare DESFire */
575 r = nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
576 PN544_RF_READER_A_CMD_CONTINUE_ACTIVATION,
583 #define PN544_CB_TYPE_READER_F 1
585 static void pn544_hci_data_exchange_cb(void *context, struct sk_buff *skb,
588 struct pn544_hci_info *info = context;
590 switch (info->async_cb_type) {
591 case PN544_CB_TYPE_READER_F:
594 info->async_cb(info->async_cb_context, skb, err);
603 #define MIFARE_CMD_AUTH_KEY_A 0x60
604 #define MIFARE_CMD_AUTH_KEY_B 0x61
605 #define MIFARE_CMD_HEADER 2
606 #define MIFARE_UID_LEN 4
607 #define MIFARE_KEY_LEN 6
608 #define MIFARE_CMD_LEN 12
611 * <= 0: driver handled the data exchange
612 * 1: driver doesn't especially handle, please do standard processing
614 static int pn544_hci_im_transceive(struct nfc_hci_dev *hdev,
615 struct nfc_target *target,
616 struct sk_buff *skb, data_exchange_cb_t cb,
619 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
621 pr_info(DRIVER_DESC ": %s for gate=%d\n", __func__,
622 target->hci_reader_gate);
624 switch (target->hci_reader_gate) {
625 case NFC_HCI_RF_READER_A_GATE:
626 if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
628 * It seems that pn544 is inverting key and UID for
629 * MIFARE authentication commands.
631 if (skb->len == MIFARE_CMD_LEN &&
632 (skb->data[0] == MIFARE_CMD_AUTH_KEY_A ||
633 skb->data[0] == MIFARE_CMD_AUTH_KEY_B)) {
634 u8 uid[MIFARE_UID_LEN];
635 u8 *data = skb->data + MIFARE_CMD_HEADER;
637 memcpy(uid, data + MIFARE_KEY_LEN,
639 memmove(data + MIFARE_UID_LEN, data,
641 memcpy(data, uid, MIFARE_UID_LEN);
644 return nfc_hci_send_cmd_async(hdev,
645 target->hci_reader_gate,
651 case PN544_RF_READER_F_GATE:
652 *skb_push(skb, 1) = 0;
653 *skb_push(skb, 1) = 0;
655 info->async_cb_type = PN544_CB_TYPE_READER_F;
657 info->async_cb_context = cb_context;
659 return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
660 PN544_FELICA_RAW, skb->data,
662 pn544_hci_data_exchange_cb, info);
663 case PN544_RF_READER_JEWEL_GATE:
664 return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
665 PN544_JEWEL_RAW_CMD, skb->data,
666 skb->len, cb, cb_context);
667 case PN544_RF_READER_NFCIP1_INITIATOR_GATE:
668 *skb_push(skb, 1) = 0;
670 return nfc_hci_send_event(hdev, target->hci_reader_gate,
671 PN544_HCI_EVT_SND_DATA, skb->data,
678 static int pn544_hci_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb)
682 /* Set default false for multiple information chaining */
683 *skb_push(skb, 1) = 0;
685 r = nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
686 PN544_HCI_EVT_SND_DATA, skb->data, skb->len);
693 static int pn544_hci_check_presence(struct nfc_hci_dev *hdev,
694 struct nfc_target *target)
696 pr_debug("supported protocol %d\b", target->supported_protocols);
697 if (target->supported_protocols & (NFC_PROTO_ISO14443_MASK |
698 NFC_PROTO_ISO14443_B_MASK)) {
699 return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
700 PN544_RF_READER_CMD_PRESENCE_CHECK,
702 } else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
703 if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
704 target->nfcid1_len != 10)
707 return nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
708 PN544_RF_READER_CMD_ACTIVATE_NEXT,
709 target->nfcid1, target->nfcid1_len, NULL);
710 } else if (target->supported_protocols & (NFC_PROTO_JEWEL_MASK |
711 NFC_PROTO_FELICA_MASK)) {
713 } else if (target->supported_protocols & NFC_PROTO_NFC_DEP_MASK) {
714 return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
715 PN544_HCI_CMD_ATTREQUEST,
724 * <= 0: driver handled the event, skb consumed
725 * 1: driver does not handle the event, please do standard processing
727 static int pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 gate, u8 event,
730 struct sk_buff *rgb_skb = NULL;
733 pr_debug("hci event %d\n", event);
735 case PN544_HCI_EVT_ACTIVATED:
736 if (gate == PN544_RF_READER_NFCIP1_INITIATOR_GATE) {
737 r = nfc_hci_target_discovered(hdev, gate);
738 } else if (gate == PN544_RF_READER_NFCIP1_TARGET_GATE) {
739 r = nfc_hci_get_param(hdev, gate, PN544_DEP_ATR_REQ,
744 r = nfc_tm_activated(hdev->ndev, NFC_PROTO_NFC_DEP_MASK,
745 NFC_COMM_PASSIVE, rgb_skb->data,
753 case PN544_HCI_EVT_DEACTIVATED:
754 r = nfc_hci_send_event(hdev, gate, NFC_HCI_EVT_END_OPERATION,
757 case PN544_HCI_EVT_RCV_DATA:
763 if (skb->data[0] != 0) {
764 pr_debug("data0 %d\n", skb->data[0]);
770 return nfc_tm_data_received(hdev->ndev, skb);
781 static int pn544_hci_fw_download(struct nfc_hci_dev *hdev,
782 const char *firmware_name)
784 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
786 if (info->fw_download == NULL)
789 return info->fw_download(info->phy_id, firmware_name, hdev->sw_romlib);
792 static int pn544_hci_discover_se(struct nfc_hci_dev *hdev)
795 u8 ese_mode = 0x01; /* Default mode */
796 struct sk_buff *res_skb;
799 r = nfc_hci_send_cmd(hdev, PN544_SYS_MGMT_GATE, PN544_TEST_SWP,
803 if (res_skb->len == 2 && res_skb->data[0] == 0x00)
804 nfc_add_se(hdev->ndev, se_idx++, NFC_SE_UICC);
809 r = nfc_hci_send_event(hdev, PN544_NFC_WI_MGMT_GATE,
810 PN544_HCI_EVT_SWITCH_MODE,
813 nfc_add_se(hdev->ndev, se_idx++, NFC_SE_EMBEDDED);
818 #define PN544_SE_MODE_OFF 0x00
819 #define PN544_SE_MODE_ON 0x01
820 static int pn544_hci_enable_se(struct nfc_hci_dev *hdev, u32 se_idx)
823 u8 enable = PN544_SE_MODE_ON;
824 static struct uicc_gatelist {
828 } uicc_gatelist[] = {
829 {0x00, {0x9e, 0xd9}, 0x23},
830 {0x00, {0x9e, 0xda}, 0x21},
831 {0x00, {0x9e, 0xdb}, 0x22},
832 {0x00, {0x9e, 0xdc}, 0x24},
834 struct uicc_gatelist *p = uicc_gatelist;
835 int count = ARRAY_SIZE(uicc_gatelist);
836 struct sk_buff *res_skb;
839 se = nfc_find_se(hdev->ndev, se_idx);
844 r = nfc_hci_send_cmd(hdev, PN544_SYS_MGMT_GATE,
845 PN544_WRITE, (u8 *)p, 4, &res_skb);
849 if (res_skb->len != 1) {
854 if (res_skb->data[0] != p->value) {
864 return nfc_hci_set_param(hdev, PN544_SWP_MGMT_GATE,
865 PN544_SWP_DEFAULT_MODE, &enable, 1);
866 case NFC_SE_EMBEDDED:
867 return nfc_hci_set_param(hdev, PN544_NFC_WI_MGMT_GATE,
868 PN544_NFC_ESE_DEFAULT_MODE, &enable, 1);
875 static int pn544_hci_disable_se(struct nfc_hci_dev *hdev, u32 se_idx)
878 u8 disable = PN544_SE_MODE_OFF;
880 se = nfc_find_se(hdev->ndev, se_idx);
884 return nfc_hci_set_param(hdev, PN544_SWP_MGMT_GATE,
885 PN544_SWP_DEFAULT_MODE, &disable, 1);
886 case NFC_SE_EMBEDDED:
887 return nfc_hci_set_param(hdev, PN544_NFC_WI_MGMT_GATE,
888 PN544_NFC_ESE_DEFAULT_MODE, &disable, 1);
894 static struct nfc_hci_ops pn544_hci_ops = {
895 .open = pn544_hci_open,
896 .close = pn544_hci_close,
897 .hci_ready = pn544_hci_ready,
898 .xmit = pn544_hci_xmit,
899 .start_poll = pn544_hci_start_poll,
900 .dep_link_up = pn544_hci_dep_link_up,
901 .dep_link_down = pn544_hci_dep_link_down,
902 .target_from_gate = pn544_hci_target_from_gate,
903 .complete_target_discovered = pn544_hci_complete_target_discovered,
904 .im_transceive = pn544_hci_im_transceive,
905 .tm_send = pn544_hci_tm_send,
906 .check_presence = pn544_hci_check_presence,
907 .event_received = pn544_hci_event_received,
908 .fw_download = pn544_hci_fw_download,
909 .discover_se = pn544_hci_discover_se,
910 .enable_se = pn544_hci_enable_se,
911 .disable_se = pn544_hci_disable_se,
914 int pn544_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name,
915 int phy_headroom, int phy_tailroom, int phy_payload,
916 fw_download_t fw_download, struct nfc_hci_dev **hdev)
918 struct pn544_hci_info *info;
920 struct nfc_hci_init_data init_data;
923 info = kzalloc(sizeof(struct pn544_hci_info), GFP_KERNEL);
929 info->phy_ops = phy_ops;
930 info->phy_id = phy_id;
931 info->fw_download = fw_download;
932 info->state = PN544_ST_COLD;
933 mutex_init(&info->info_lock);
935 init_data.gate_count = ARRAY_SIZE(pn544_gates);
937 memcpy(init_data.gates, pn544_gates, sizeof(pn544_gates));
940 * TODO: Session id must include the driver name + some bus addr
941 * persistent info to discriminate 2 identical chips
943 strcpy(init_data.session_id, "ID544HCI");
945 protocols = NFC_PROTO_JEWEL_MASK |
946 NFC_PROTO_MIFARE_MASK |
947 NFC_PROTO_FELICA_MASK |
948 NFC_PROTO_ISO14443_MASK |
949 NFC_PROTO_ISO14443_B_MASK |
950 NFC_PROTO_NFC_DEP_MASK;
952 info->hdev = nfc_hci_allocate_device(&pn544_hci_ops, &init_data, 0,
954 phy_headroom + PN544_CMDS_HEADROOM,
955 phy_tailroom, phy_payload);
957 pr_err("Cannot allocate nfc hdev\n");
962 nfc_hci_set_clientdata(info->hdev, info);
964 r = nfc_hci_register_device(info->hdev);
973 nfc_hci_free_device(info->hdev);
981 EXPORT_SYMBOL(pn544_hci_probe);
983 void pn544_hci_remove(struct nfc_hci_dev *hdev)
985 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
987 nfc_hci_unregister_device(hdev);
988 nfc_hci_free_device(hdev);
991 EXPORT_SYMBOL(pn544_hci_remove);
993 MODULE_LICENSE("GPL");
994 MODULE_DESCRIPTION(DRIVER_DESC);