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, write to the
17 * Free Software Foundation, Inc.,
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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
43 #define FULL_VERSION_LEN 11
45 /* Proprietary commands */
46 #define PN544_WRITE 0x3f
48 /* Proprietary gates, events, commands and registers */
50 /* NFC_HCI_RF_READER_A_GATE additional registers and commands */
51 #define PN544_RF_READER_A_AUTO_ACTIVATION 0x10
52 #define PN544_RF_READER_A_CMD_CONTINUE_ACTIVATION 0x12
53 #define PN544_MIFARE_CMD 0x21
55 /* Commands that apply to all RF readers */
56 #define PN544_RF_READER_CMD_PRESENCE_CHECK 0x30
57 #define PN544_RF_READER_CMD_ACTIVATE_NEXT 0x32
59 /* NFC_HCI_ID_MGMT_GATE additional registers */
60 #define PN544_ID_MGMT_FULL_VERSION_SW 0x10
62 #define PN544_RF_READER_ISO15693_GATE 0x12
64 #define PN544_RF_READER_F_GATE 0x14
65 #define PN544_FELICA_ID 0x04
66 #define PN544_FELICA_RAW 0x20
68 #define PN544_RF_READER_JEWEL_GATE 0x15
69 #define PN544_JEWEL_RAW_CMD 0x23
71 #define PN544_RF_READER_NFCIP1_INITIATOR_GATE 0x30
72 #define PN544_RF_READER_NFCIP1_TARGET_GATE 0x31
74 #define PN544_SYS_MGMT_GATE 0x90
75 #define PN544_SYS_MGMT_INFO_NOTIFICATION 0x02
77 #define PN544_POLLING_LOOP_MGMT_GATE 0x94
78 #define PN544_DEP_MODE 0x01
79 #define PN544_DEP_ATR_REQ 0x02
80 #define PN544_DEP_ATR_RES 0x03
81 #define PN544_DEP_MERGE 0x0D
82 #define PN544_PL_RDPHASES 0x06
83 #define PN544_PL_EMULATION 0x07
84 #define PN544_PL_NFCT_DEACTIVATED 0x09
86 #define PN544_SWP_MGMT_GATE 0xA0
88 #define PN544_NFC_WI_MGMT_GATE 0xA1
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
96 #define PN544_HCI_CMD_ATTREQUEST 0x12
97 #define PN544_HCI_CMD_CONTINUE_ACTIVATION 0x13
99 static struct nfc_hci_gate pn544_gates[] = {
100 {NFC_HCI_ADMIN_GATE, NFC_HCI_INVALID_PIPE},
101 {NFC_HCI_LOOPBACK_GATE, NFC_HCI_INVALID_PIPE},
102 {NFC_HCI_ID_MGMT_GATE, NFC_HCI_INVALID_PIPE},
103 {NFC_HCI_LINK_MGMT_GATE, NFC_HCI_INVALID_PIPE},
104 {NFC_HCI_RF_READER_B_GATE, NFC_HCI_INVALID_PIPE},
105 {NFC_HCI_RF_READER_A_GATE, NFC_HCI_INVALID_PIPE},
106 {PN544_SYS_MGMT_GATE, NFC_HCI_INVALID_PIPE},
107 {PN544_SWP_MGMT_GATE, NFC_HCI_INVALID_PIPE},
108 {PN544_POLLING_LOOP_MGMT_GATE, NFC_HCI_INVALID_PIPE},
109 {PN544_NFC_WI_MGMT_GATE, NFC_HCI_INVALID_PIPE},
110 {PN544_RF_READER_F_GATE, NFC_HCI_INVALID_PIPE},
111 {PN544_RF_READER_JEWEL_GATE, NFC_HCI_INVALID_PIPE},
112 {PN544_RF_READER_ISO15693_GATE, NFC_HCI_INVALID_PIPE},
113 {PN544_RF_READER_NFCIP1_INITIATOR_GATE, NFC_HCI_INVALID_PIPE},
114 {PN544_RF_READER_NFCIP1_TARGET_GATE, NFC_HCI_INVALID_PIPE}
117 /* Largest headroom needed for outgoing custom commands */
118 #define PN544_CMDS_HEADROOM 2
120 struct pn544_hci_info {
121 struct nfc_phy_ops *phy_ops;
124 struct nfc_hci_dev *hdev;
126 enum pn544_state state;
128 struct mutex info_lock;
131 data_exchange_cb_t async_cb;
132 void *async_cb_context;
135 static int pn544_hci_open(struct nfc_hci_dev *hdev)
137 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
140 mutex_lock(&info->info_lock);
142 if (info->state != PN544_ST_COLD) {
147 r = info->phy_ops->enable(info->phy_id);
150 info->state = PN544_ST_READY;
153 mutex_unlock(&info->info_lock);
157 static void pn544_hci_close(struct nfc_hci_dev *hdev)
159 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
161 mutex_lock(&info->info_lock);
163 if (info->state == PN544_ST_COLD)
166 info->phy_ops->disable(info->phy_id);
168 info->state = PN544_ST_COLD;
171 mutex_unlock(&info->info_lock);
174 static int pn544_hci_ready(struct nfc_hci_dev *hdev)
177 static struct hw_config {
181 {{0x9f, 0x9a}, 0x00},
183 {{0x98, 0x10}, 0xbc},
185 {{0x9e, 0x71}, 0x00},
187 {{0x98, 0x09}, 0x00},
189 {{0x9e, 0xb4}, 0x00},
191 {{0x9e, 0xd9}, 0xff},
192 {{0x9e, 0xda}, 0xff},
193 {{0x9e, 0xdb}, 0x23},
194 {{0x9e, 0xdc}, 0x21},
195 {{0x9e, 0xdd}, 0x22},
196 {{0x9e, 0xde}, 0x24},
198 {{0x9c, 0x01}, 0x08},
200 {{0x9e, 0xaa}, 0x01},
202 {{0x9b, 0xd1}, 0x0d},
203 {{0x9b, 0xd2}, 0x24},
204 {{0x9b, 0xd3}, 0x0a},
205 {{0x9b, 0xd4}, 0x22},
206 {{0x9b, 0xd5}, 0x08},
207 {{0x9b, 0xd6}, 0x1e},
208 {{0x9b, 0xdd}, 0x1c},
210 {{0x9b, 0x84}, 0x13},
211 {{0x99, 0x81}, 0x7f},
212 {{0x99, 0x31}, 0x70},
214 {{0x98, 0x00}, 0x3f},
216 {{0x9f, 0x09}, 0x00},
218 {{0x9f, 0x0a}, 0x05},
220 {{0x9e, 0xd1}, 0xa1},
221 {{0x99, 0x23}, 0x00},
223 {{0x9e, 0x74}, 0x80},
225 {{0x9f, 0x28}, 0x10},
227 {{0x9f, 0x35}, 0x14},
229 {{0x9f, 0x36}, 0x60},
231 {{0x9c, 0x31}, 0x00},
233 {{0x9c, 0x32}, 0xc8},
235 {{0x9c, 0x19}, 0x40},
237 {{0x9c, 0x1a}, 0x40},
239 {{0x9c, 0x0c}, 0x00},
241 {{0x9c, 0x0d}, 0x00},
243 {{0x9c, 0x12}, 0x00},
245 {{0x9c, 0x13}, 0x00},
247 {{0x98, 0xa2}, 0x0e},
249 {{0x98, 0x93}, 0x40},
251 {{0x98, 0x7d}, 0x02},
252 {{0x98, 0x7e}, 0x00},
253 {{0x9f, 0xc8}, 0x01},
255 struct hw_config *p = hw_config;
256 int count = ARRAY_SIZE(hw_config);
257 struct sk_buff *res_skb;
263 param[1] = p->adr[0];
264 param[2] = p->adr[1];
267 r = nfc_hci_send_cmd(hdev, PN544_SYS_MGMT_GATE, PN544_WRITE,
272 if (res_skb->len != 1) {
277 if (res_skb->data[0] != p->value) {
287 param[0] = NFC_HCI_UICC_HOST_ID;
288 r = nfc_hci_set_param(hdev, NFC_HCI_ADMIN_GATE,
289 NFC_HCI_ADMIN_WHITELIST, param, 1);
294 r = nfc_hci_set_param(hdev, PN544_SYS_MGMT_GATE,
295 PN544_SYS_MGMT_INFO_NOTIFICATION, param, 1);
300 r = nfc_hci_set_param(hdev, NFC_HCI_RF_READER_A_GATE,
301 PN544_RF_READER_A_AUTO_ACTIVATION, param, 1);
305 r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
306 NFC_HCI_EVT_END_OPERATION, NULL, 0);
311 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
312 PN544_PL_NFCT_DEACTIVATED, param, 1);
317 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
318 PN544_PL_RDPHASES, param, 1);
322 r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
323 PN544_ID_MGMT_FULL_VERSION_SW, &skb);
327 if (skb->len != FULL_VERSION_LEN) {
332 print_hex_dump(KERN_DEBUG, "FULL VERSION SOFTWARE INFO: ",
333 DUMP_PREFIX_NONE, 16, 1,
334 skb->data, FULL_VERSION_LEN, false);
341 static int pn544_hci_xmit(struct nfc_hci_dev *hdev, struct sk_buff *skb)
343 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
345 return info->phy_ops->write(info->phy_id, skb);
348 static int pn544_hci_start_poll(struct nfc_hci_dev *hdev,
349 u32 im_protocols, u32 tm_protocols)
355 u8 i_mode = 0x3f; /* Enable all supported modes */
357 u8 t_merge = 0x01; /* Enable merge by default */
359 pr_info(DRIVER_DESC ": %s protocols 0x%x 0x%x\n",
360 __func__, im_protocols, tm_protocols);
362 r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
363 NFC_HCI_EVT_END_OPERATION, NULL, 0);
369 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
370 PN544_PL_EMULATION, duration, 2);
375 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
376 PN544_PL_NFCT_DEACTIVATED, &activated, 1);
380 if (im_protocols & (NFC_PROTO_ISO14443_MASK | NFC_PROTO_MIFARE_MASK |
381 NFC_PROTO_JEWEL_MASK))
382 phases |= 1; /* Type A */
383 if (im_protocols & NFC_PROTO_FELICA_MASK) {
384 phases |= (1 << 2); /* Type F 212 */
385 phases |= (1 << 3); /* Type F 424 */
388 phases |= (1 << 5); /* NFC active */
390 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
391 PN544_PL_RDPHASES, &phases, 1);
395 if ((im_protocols | tm_protocols) & NFC_PROTO_NFC_DEP_MASK) {
396 hdev->gb = nfc_get_local_general_bytes(hdev->ndev,
398 pr_debug("generate local bytes %p", hdev->gb);
399 if (hdev->gb == NULL || hdev->gb_len == 0) {
400 im_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
401 tm_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
405 if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
406 r = nfc_hci_send_event(hdev,
407 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
408 NFC_HCI_EVT_END_OPERATION, NULL, 0);
412 r = nfc_hci_set_param(hdev,
413 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
414 PN544_DEP_MODE, &i_mode, 1);
418 r = nfc_hci_set_param(hdev,
419 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
420 PN544_DEP_ATR_REQ, hdev->gb, hdev->gb_len);
424 r = nfc_hci_send_event(hdev,
425 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
426 NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
428 nfc_hci_send_event(hdev,
429 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
430 NFC_HCI_EVT_END_OPERATION, NULL, 0);
433 if (tm_protocols & NFC_PROTO_NFC_DEP_MASK) {
434 r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
435 PN544_DEP_MODE, &t_mode, 1);
439 r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
440 PN544_DEP_ATR_RES, hdev->gb, hdev->gb_len);
444 r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
445 PN544_DEP_MERGE, &t_merge, 1);
450 r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
451 NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
453 nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
454 NFC_HCI_EVT_END_OPERATION, NULL, 0);
459 static int pn544_hci_dep_link_up(struct nfc_hci_dev *hdev,
460 struct nfc_target *target, u8 comm_mode,
461 u8 *gb, size_t gb_len)
463 struct sk_buff *rgb_skb = NULL;
466 r = nfc_hci_get_param(hdev, target->hci_reader_gate,
467 PN544_DEP_ATR_RES, &rgb_skb);
471 if (rgb_skb->len == 0 || rgb_skb->len > NFC_GB_MAXSIZE) {
475 print_hex_dump(KERN_DEBUG, "remote gb: ", DUMP_PREFIX_OFFSET,
476 16, 1, rgb_skb->data, rgb_skb->len, true);
478 r = nfc_set_remote_general_bytes(hdev->ndev, rgb_skb->data,
482 r = nfc_dep_link_is_up(hdev->ndev, target->idx, comm_mode,
489 static int pn544_hci_dep_link_down(struct nfc_hci_dev *hdev)
492 return nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_INITIATOR_GATE,
493 NFC_HCI_EVT_END_OPERATION, NULL, 0);
496 static int pn544_hci_target_from_gate(struct nfc_hci_dev *hdev, u8 gate,
497 struct nfc_target *target)
500 case PN544_RF_READER_F_GATE:
501 target->supported_protocols = NFC_PROTO_FELICA_MASK;
503 case PN544_RF_READER_JEWEL_GATE:
504 target->supported_protocols = NFC_PROTO_JEWEL_MASK;
505 target->sens_res = 0x0c00;
507 case PN544_RF_READER_NFCIP1_INITIATOR_GATE:
508 target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
517 static int pn544_hci_complete_target_discovered(struct nfc_hci_dev *hdev,
519 struct nfc_target *target)
521 struct sk_buff *uid_skb;
524 if (gate == PN544_RF_READER_NFCIP1_INITIATOR_GATE)
527 if (target->supported_protocols & NFC_PROTO_NFC_DEP_MASK) {
528 r = nfc_hci_send_cmd(hdev,
529 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
530 PN544_HCI_CMD_CONTINUE_ACTIVATION, NULL, 0, NULL);
534 target->hci_reader_gate = PN544_RF_READER_NFCIP1_INITIATOR_GATE;
535 } else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
536 if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
537 target->nfcid1_len != 10)
540 r = nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
541 PN544_RF_READER_CMD_ACTIVATE_NEXT,
542 target->nfcid1, target->nfcid1_len, NULL);
543 } else if (target->supported_protocols & NFC_PROTO_FELICA_MASK) {
544 r = nfc_hci_get_param(hdev, PN544_RF_READER_F_GATE,
545 PN544_FELICA_ID, &uid_skb);
549 if (uid_skb->len != 8) {
554 r = nfc_hci_send_cmd(hdev, PN544_RF_READER_F_GATE,
555 PN544_RF_READER_CMD_ACTIVATE_NEXT,
556 uid_skb->data, uid_skb->len, NULL);
559 r = nfc_hci_send_cmd(hdev,
560 PN544_RF_READER_NFCIP1_INITIATOR_GATE,
561 PN544_HCI_CMD_CONTINUE_ACTIVATION,
566 target->hci_reader_gate = PN544_RF_READER_NFCIP1_INITIATOR_GATE;
567 target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
568 } else if (target->supported_protocols & NFC_PROTO_ISO14443_MASK) {
570 * TODO: maybe other ISO 14443 require some kind of continue
571 * activation, but for now we've seen only this one below.
573 if (target->sens_res == 0x4403) /* Type 4 Mifare DESFire */
574 r = nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
575 PN544_RF_READER_A_CMD_CONTINUE_ACTIVATION,
582 #define PN544_CB_TYPE_READER_F 1
584 static void pn544_hci_data_exchange_cb(void *context, struct sk_buff *skb,
587 struct pn544_hci_info *info = context;
589 switch (info->async_cb_type) {
590 case PN544_CB_TYPE_READER_F:
593 info->async_cb(info->async_cb_context, skb, err);
602 #define MIFARE_CMD_AUTH_KEY_A 0x60
603 #define MIFARE_CMD_AUTH_KEY_B 0x61
604 #define MIFARE_CMD_HEADER 2
605 #define MIFARE_UID_LEN 4
606 #define MIFARE_KEY_LEN 6
607 #define MIFARE_CMD_LEN 12
610 * <= 0: driver handled the data exchange
611 * 1: driver doesn't especially handle, please do standard processing
613 static int pn544_hci_im_transceive(struct nfc_hci_dev *hdev,
614 struct nfc_target *target,
615 struct sk_buff *skb, data_exchange_cb_t cb,
618 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
620 pr_info(DRIVER_DESC ": %s for gate=%d\n", __func__,
621 target->hci_reader_gate);
623 switch (target->hci_reader_gate) {
624 case NFC_HCI_RF_READER_A_GATE:
625 if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
627 * It seems that pn544 is inverting key and UID for
628 * MIFARE authentication commands.
630 if (skb->len == MIFARE_CMD_LEN &&
631 (skb->data[0] == MIFARE_CMD_AUTH_KEY_A ||
632 skb->data[0] == MIFARE_CMD_AUTH_KEY_B)) {
633 u8 uid[MIFARE_UID_LEN];
634 u8 *data = skb->data + MIFARE_CMD_HEADER;
636 memcpy(uid, data + MIFARE_KEY_LEN,
638 memmove(data + MIFARE_UID_LEN, data,
640 memcpy(data, uid, MIFARE_UID_LEN);
643 return nfc_hci_send_cmd_async(hdev,
644 target->hci_reader_gate,
650 case PN544_RF_READER_F_GATE:
651 *skb_push(skb, 1) = 0;
652 *skb_push(skb, 1) = 0;
654 info->async_cb_type = PN544_CB_TYPE_READER_F;
656 info->async_cb_context = cb_context;
658 return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
659 PN544_FELICA_RAW, skb->data,
661 pn544_hci_data_exchange_cb, info);
662 case PN544_RF_READER_JEWEL_GATE:
663 return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
664 PN544_JEWEL_RAW_CMD, skb->data,
665 skb->len, cb, cb_context);
666 case PN544_RF_READER_NFCIP1_INITIATOR_GATE:
667 *skb_push(skb, 1) = 0;
669 return nfc_hci_send_event(hdev, target->hci_reader_gate,
670 PN544_HCI_EVT_SND_DATA, skb->data,
677 static int pn544_hci_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb)
681 /* Set default false for multiple information chaining */
682 *skb_push(skb, 1) = 0;
684 r = nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
685 PN544_HCI_EVT_SND_DATA, skb->data, skb->len);
692 static int pn544_hci_check_presence(struct nfc_hci_dev *hdev,
693 struct nfc_target *target)
695 pr_debug("supported protocol %d", target->supported_protocols);
696 if (target->supported_protocols & (NFC_PROTO_ISO14443_MASK |
697 NFC_PROTO_ISO14443_B_MASK)) {
698 return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
699 PN544_RF_READER_CMD_PRESENCE_CHECK,
701 } else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
702 if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
703 target->nfcid1_len != 10)
706 return nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
707 PN544_RF_READER_CMD_ACTIVATE_NEXT,
708 target->nfcid1, target->nfcid1_len, NULL);
709 } else if (target->supported_protocols & NFC_PROTO_JEWEL_MASK) {
710 return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
711 PN544_JEWEL_RAW_CMD, NULL, 0, NULL);
712 } else if (target->supported_protocols & NFC_PROTO_FELICA_MASK) {
713 return nfc_hci_send_cmd(hdev, PN544_RF_READER_F_GATE,
714 PN544_FELICA_RAW, NULL, 0, NULL);
715 } else if (target->supported_protocols & NFC_PROTO_NFC_DEP_MASK) {
716 return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
717 PN544_HCI_CMD_ATTREQUEST,
726 * <= 0: driver handled the event, skb consumed
727 * 1: driver does not handle the event, please do standard processing
729 static int pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 gate, u8 event,
732 struct sk_buff *rgb_skb = NULL;
735 pr_debug("hci event %d", event);
737 case PN544_HCI_EVT_ACTIVATED:
738 if (gate == PN544_RF_READER_NFCIP1_INITIATOR_GATE) {
739 r = nfc_hci_target_discovered(hdev, gate);
740 } else if (gate == PN544_RF_READER_NFCIP1_TARGET_GATE) {
741 r = nfc_hci_get_param(hdev, gate, PN544_DEP_ATR_REQ,
746 r = nfc_tm_activated(hdev->ndev, NFC_PROTO_NFC_DEP_MASK,
747 NFC_COMM_PASSIVE, rgb_skb->data,
755 case PN544_HCI_EVT_DEACTIVATED:
756 r = nfc_hci_send_event(hdev, gate, NFC_HCI_EVT_END_OPERATION,
759 case PN544_HCI_EVT_RCV_DATA:
765 if (skb->data[0] != 0) {
766 pr_debug("data0 %d", skb->data[0]);
772 return nfc_tm_data_received(hdev->ndev, skb);
783 static struct nfc_hci_ops pn544_hci_ops = {
784 .open = pn544_hci_open,
785 .close = pn544_hci_close,
786 .hci_ready = pn544_hci_ready,
787 .xmit = pn544_hci_xmit,
788 .start_poll = pn544_hci_start_poll,
789 .dep_link_up = pn544_hci_dep_link_up,
790 .dep_link_down = pn544_hci_dep_link_down,
791 .target_from_gate = pn544_hci_target_from_gate,
792 .complete_target_discovered = pn544_hci_complete_target_discovered,
793 .im_transceive = pn544_hci_im_transceive,
794 .tm_send = pn544_hci_tm_send,
795 .check_presence = pn544_hci_check_presence,
796 .event_received = pn544_hci_event_received,
799 int pn544_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name,
800 int phy_headroom, int phy_tailroom, int phy_payload,
801 struct nfc_hci_dev **hdev)
803 struct pn544_hci_info *info;
805 struct nfc_hci_init_data init_data;
808 info = kzalloc(sizeof(struct pn544_hci_info), GFP_KERNEL);
810 pr_err("Cannot allocate memory for pn544_hci_info.\n");
815 info->phy_ops = phy_ops;
816 info->phy_id = phy_id;
817 info->state = PN544_ST_COLD;
818 mutex_init(&info->info_lock);
820 init_data.gate_count = ARRAY_SIZE(pn544_gates);
822 memcpy(init_data.gates, pn544_gates, sizeof(pn544_gates));
825 * TODO: Session id must include the driver name + some bus addr
826 * persistent info to discriminate 2 identical chips
828 strcpy(init_data.session_id, "ID544HCI");
830 protocols = NFC_PROTO_JEWEL_MASK |
831 NFC_PROTO_MIFARE_MASK |
832 NFC_PROTO_FELICA_MASK |
833 NFC_PROTO_ISO14443_MASK |
834 NFC_PROTO_ISO14443_B_MASK |
835 NFC_PROTO_NFC_DEP_MASK;
837 se = NFC_SE_UICC | NFC_SE_EMBEDDED;
839 info->hdev = nfc_hci_allocate_device(&pn544_hci_ops, &init_data, 0,
840 protocols, se, llc_name,
841 phy_headroom + PN544_CMDS_HEADROOM,
842 phy_tailroom, phy_payload);
844 pr_err("Cannot allocate nfc hdev.\n");
849 nfc_hci_set_clientdata(info->hdev, info);
851 r = nfc_hci_register_device(info->hdev);
860 nfc_hci_free_device(info->hdev);
868 EXPORT_SYMBOL(pn544_hci_probe);
870 void pn544_hci_remove(struct nfc_hci_dev *hdev)
872 struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
874 nfc_hci_unregister_device(hdev);
875 nfc_hci_free_device(hdev);
878 EXPORT_SYMBOL(pn544_hci_remove);
880 MODULE_LICENSE("GPL");
881 MODULE_DESCRIPTION(DRIVER_DESC);