pn544.c (3943826177945c0f7e82fcf1f37797149c6d9c91) pn544.c (17936b43f0fdede23582d83a45622751409c99b9)
1/*
2 * HCI based Driver for NXP PN544 NFC Chip
3 *
4 * Copyright (C) 2012 Intel Corporation. All rights reserved.
5 *
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.

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13 * GNU General Public License for more details.
14 *
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.
19 */
20
1/*
2 * HCI based Driver for NXP PN544 NFC Chip
3 *
4 * Copyright (C) 2012 Intel Corporation. All rights reserved.
5 *
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.

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13 * GNU General Public License for more details.
14 *
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.
19 */
20
21#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
22
21#include <linux/delay.h>
22#include <linux/slab.h>
23#include <linux/module.h>
24
25#include <linux/nfc.h>
26#include <net/nfc/hci.h>
27#include <net/nfc/llc.h>
28

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386 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
387 PN544_PL_RDPHASES, &phases, 1);
388 if (r < 0)
389 return r;
390
391 if ((im_protocols | tm_protocols) & NFC_PROTO_NFC_DEP_MASK) {
392 hdev->gb = nfc_get_local_general_bytes(hdev->ndev,
393 &hdev->gb_len);
23#include <linux/delay.h>
24#include <linux/slab.h>
25#include <linux/module.h>
26
27#include <linux/nfc.h>
28#include <net/nfc/hci.h>
29#include <net/nfc/llc.h>
30

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388 r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
389 PN544_PL_RDPHASES, &phases, 1);
390 if (r < 0)
391 return r;
392
393 if ((im_protocols | tm_protocols) & NFC_PROTO_NFC_DEP_MASK) {
394 hdev->gb = nfc_get_local_general_bytes(hdev->ndev,
395 &hdev->gb_len);
394 pr_debug("generate local bytes %p", hdev->gb);
396 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;
398 }
399 }
400
401 if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
402 r = nfc_hci_send_event(hdev,

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688 kfree_skb(skb);
689
690 return r;
691}
692
693static int pn544_hci_check_presence(struct nfc_hci_dev *hdev,
694 struct nfc_target *target)
695{
397 if (hdev->gb == NULL || hdev->gb_len == 0) {
398 im_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
399 tm_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
400 }
401 }
402
403 if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
404 r = nfc_hci_send_event(hdev,

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690 kfree_skb(skb);
691
692 return r;
693}
694
695static int pn544_hci_check_presence(struct nfc_hci_dev *hdev,
696 struct nfc_target *target)
697{
696 pr_debug("supported protocol %d", target->supported_protocols);
698 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,
701 NULL, 0, NULL);
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)

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725 * 1: driver does not handle the event, please do standard processing
726 */
727static int pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 gate, u8 event,
728 struct sk_buff *skb)
729{
730 struct sk_buff *rgb_skb = NULL;
731 int r;
732
699 if (target->supported_protocols & (NFC_PROTO_ISO14443_MASK |
700 NFC_PROTO_ISO14443_B_MASK)) {
701 return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
702 PN544_RF_READER_CMD_PRESENCE_CHECK,
703 NULL, 0, NULL);
704 } else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
705 if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
706 target->nfcid1_len != 10)

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727 * 1: driver does not handle the event, please do standard processing
728 */
729static int pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 gate, u8 event,
730 struct sk_buff *skb)
731{
732 struct sk_buff *rgb_skb = NULL;
733 int r;
734
733 pr_debug("hci event %d", event);
735 pr_debug("hci event %d\n", event);
734 switch (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,
740 &rgb_skb);
741 if (r < 0)

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756 break;
757 case PN544_HCI_EVT_RCV_DATA:
758 if (skb->len < 2) {
759 r = -EPROTO;
760 goto exit;
761 }
762
763 if (skb->data[0] != 0) {
736 switch (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,
742 &rgb_skb);
743 if (r < 0)

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758 break;
759 case PN544_HCI_EVT_RCV_DATA:
760 if (skb->len < 2) {
761 r = -EPROTO;
762 goto exit;
763 }
764
765 if (skb->data[0] != 0) {
764 pr_debug("data0 %d", skb->data[0]);
766 pr_debug("data0 %d\n", skb->data[0]);
765 r = -EPROTO;
766 goto exit;
767 }
768
769 skb_pull(skb, 2);
770 return nfc_tm_data_received(hdev->ndev, skb);
771 default:
772 return 1;

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917{
918 struct pn544_hci_info *info;
919 u32 protocols;
920 struct nfc_hci_init_data init_data;
921 int r;
922
923 info = kzalloc(sizeof(struct pn544_hci_info), GFP_KERNEL);
924 if (!info) {
767 r = -EPROTO;
768 goto exit;
769 }
770
771 skb_pull(skb, 2);
772 return nfc_tm_data_received(hdev->ndev, skb);
773 default:
774 return 1;

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919{
920 struct pn544_hci_info *info;
921 u32 protocols;
922 struct nfc_hci_init_data init_data;
923 int r;
924
925 info = kzalloc(sizeof(struct pn544_hci_info), GFP_KERNEL);
926 if (!info) {
925 pr_err("Cannot allocate memory for pn544_hci_info.\n");
926 r = -ENOMEM;
927 goto err_info_alloc;
928 }
929
930 info->phy_ops = phy_ops;
931 info->phy_id = phy_id;
932 info->fw_download = fw_download;
933 info->state = PN544_ST_COLD;

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950 NFC_PROTO_ISO14443_B_MASK |
951 NFC_PROTO_NFC_DEP_MASK;
952
953 info->hdev = nfc_hci_allocate_device(&pn544_hci_ops, &init_data, 0,
954 protocols, llc_name,
955 phy_headroom + PN544_CMDS_HEADROOM,
956 phy_tailroom, phy_payload);
957 if (!info->hdev) {
927 r = -ENOMEM;
928 goto err_info_alloc;
929 }
930
931 info->phy_ops = phy_ops;
932 info->phy_id = phy_id;
933 info->fw_download = fw_download;
934 info->state = PN544_ST_COLD;

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951 NFC_PROTO_ISO14443_B_MASK |
952 NFC_PROTO_NFC_DEP_MASK;
953
954 info->hdev = nfc_hci_allocate_device(&pn544_hci_ops, &init_data, 0,
955 protocols, llc_name,
956 phy_headroom + PN544_CMDS_HEADROOM,
957 phy_tailroom, phy_payload);
958 if (!info->hdev) {
958 pr_err("Cannot allocate nfc hdev.\n");
959 pr_err("Cannot allocate nfc hdev\n");
959 r = -ENOMEM;
960 goto err_alloc_hdev;
961 }
962
963 nfc_hci_set_clientdata(info->hdev, info);
964
965 r = nfc_hci_register_device(info->hdev);
966 if (r)

--- 29 unchanged lines hidden --- 		960 r = -ENOMEM;
961 goto err_alloc_hdev;
962 }
963
964 nfc_hci_set_clientdata(info->hdev, info);
965
966 r = nfc_hci_register_device(info->hdev);
967 if (r)

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