681 lines
16 KiB
C
681 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
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*/
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#include <net/nfc/hci.h>
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#include "st21nfca.h"
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#define ST21NFCA_NFCIP1_INITIATOR 0x00
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#define ST21NFCA_NFCIP1_REQ 0xd4
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#define ST21NFCA_NFCIP1_RES 0xd5
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#define ST21NFCA_NFCIP1_ATR_REQ 0x00
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#define ST21NFCA_NFCIP1_ATR_RES 0x01
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#define ST21NFCA_NFCIP1_PSL_REQ 0x04
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#define ST21NFCA_NFCIP1_PSL_RES 0x05
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#define ST21NFCA_NFCIP1_DEP_REQ 0x06
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#define ST21NFCA_NFCIP1_DEP_RES 0x07
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#define ST21NFCA_NFC_DEP_PFB_PNI(pfb) ((pfb) & 0x03)
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#define ST21NFCA_NFC_DEP_PFB_TYPE(pfb) ((pfb) & 0xE0)
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#define ST21NFCA_NFC_DEP_PFB_IS_TIMEOUT(pfb) \
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((pfb) & ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT)
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#define ST21NFCA_NFC_DEP_DID_BIT_SET(pfb) ((pfb) & 0x04)
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#define ST21NFCA_NFC_DEP_NAD_BIT_SET(pfb) ((pfb) & 0x08)
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#define ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT 0x10
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#define ST21NFCA_NFC_DEP_PFB_IS_TIMEOUT(pfb) \
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((pfb) & ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT)
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#define ST21NFCA_NFC_DEP_PFB_I_PDU 0x00
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#define ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU 0x40
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#define ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU 0x80
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#define ST21NFCA_ATR_REQ_MIN_SIZE 17
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#define ST21NFCA_ATR_REQ_MAX_SIZE 65
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#define ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B 0x30
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#define ST21NFCA_GB_BIT 0x02
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#define ST21NFCA_EVT_SEND_DATA 0x10
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#define ST21NFCA_EVT_FIELD_ON 0x11
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#define ST21NFCA_EVT_CARD_DEACTIVATED 0x12
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#define ST21NFCA_EVT_CARD_ACTIVATED 0x13
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#define ST21NFCA_EVT_FIELD_OFF 0x14
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#define ST21NFCA_EVT_CARD_F_BITRATE 0x16
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#define ST21NFCA_EVT_READER_F_BITRATE 0x13
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#define ST21NFCA_PSL_REQ_SEND_SPEED(brs) (brs & 0x38)
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#define ST21NFCA_PSL_REQ_RECV_SPEED(brs) (brs & 0x07)
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#define ST21NFCA_PP2LRI(pp) ((pp & 0x30) >> 4)
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#define ST21NFCA_CARD_BITRATE_212 0x01
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#define ST21NFCA_CARD_BITRATE_424 0x02
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#define ST21NFCA_DEFAULT_TIMEOUT 0x0a
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#define PROTOCOL_ERR(req) pr_err("%d: ST21NFCA Protocol error: %s\n", \
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__LINE__, req)
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struct st21nfca_atr_req {
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u8 length;
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u8 cmd0;
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u8 cmd1;
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u8 nfcid3[NFC_NFCID3_MAXSIZE];
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u8 did;
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u8 bsi;
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u8 bri;
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u8 ppi;
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u8 gbi[];
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} __packed;
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struct st21nfca_atr_res {
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u8 length;
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u8 cmd0;
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u8 cmd1;
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u8 nfcid3[NFC_NFCID3_MAXSIZE];
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u8 did;
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u8 bsi;
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u8 bri;
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u8 to;
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u8 ppi;
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u8 gbi[];
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} __packed;
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struct st21nfca_psl_req {
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u8 length;
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u8 cmd0;
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u8 cmd1;
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u8 did;
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u8 brs;
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u8 fsl;
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} __packed;
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struct st21nfca_psl_res {
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u8 length;
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u8 cmd0;
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u8 cmd1;
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u8 did;
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} __packed;
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struct st21nfca_dep_req_res {
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u8 length;
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u8 cmd0;
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u8 cmd1;
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u8 pfb;
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u8 did;
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u8 nad;
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} __packed;
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static void st21nfca_tx_work(struct work_struct *work)
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{
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struct st21nfca_hci_info *info = container_of(work,
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struct st21nfca_hci_info,
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dep_info.tx_work);
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struct nfc_dev *dev;
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struct sk_buff *skb;
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if (info) {
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dev = info->hdev->ndev;
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skb = info->dep_info.tx_pending;
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device_lock(&dev->dev);
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nfc_hci_send_cmd_async(info->hdev, ST21NFCA_RF_READER_F_GATE,
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ST21NFCA_WR_XCHG_DATA, skb->data, skb->len,
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info->async_cb, info);
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device_unlock(&dev->dev);
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kfree_skb(skb);
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}
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}
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static void st21nfca_im_send_pdu(struct st21nfca_hci_info *info,
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struct sk_buff *skb)
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{
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info->dep_info.tx_pending = skb;
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schedule_work(&info->dep_info.tx_work);
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}
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static int st21nfca_tm_send_atr_res(struct nfc_hci_dev *hdev,
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struct st21nfca_atr_req *atr_req)
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{
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struct st21nfca_atr_res *atr_res;
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struct sk_buff *skb;
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size_t gb_len;
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int r;
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
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gb_len = atr_req->length - sizeof(struct st21nfca_atr_req);
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skb = alloc_skb(atr_req->length + 1, GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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skb_put(skb, sizeof(struct st21nfca_atr_res));
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atr_res = (struct st21nfca_atr_res *)skb->data;
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memset(atr_res, 0, sizeof(struct st21nfca_atr_res));
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atr_res->length = atr_req->length + 1;
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atr_res->cmd0 = ST21NFCA_NFCIP1_RES;
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atr_res->cmd1 = ST21NFCA_NFCIP1_ATR_RES;
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memcpy(atr_res->nfcid3, atr_req->nfcid3, 6);
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atr_res->bsi = 0x00;
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atr_res->bri = 0x00;
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atr_res->to = ST21NFCA_DEFAULT_TIMEOUT;
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atr_res->ppi = ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B;
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if (gb_len) {
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skb_put(skb, gb_len);
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atr_res->ppi |= ST21NFCA_GB_BIT;
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memcpy(atr_res->gbi, atr_req->gbi, gb_len);
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r = nfc_set_remote_general_bytes(hdev->ndev, atr_res->gbi,
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gb_len);
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if (r < 0)
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return r;
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}
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info->dep_info.curr_nfc_dep_pni = 0;
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r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
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ST21NFCA_EVT_SEND_DATA, skb->data, skb->len);
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kfree_skb(skb);
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return r;
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}
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static int st21nfca_tm_recv_atr_req(struct nfc_hci_dev *hdev,
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struct sk_buff *skb)
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{
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struct st21nfca_atr_req *atr_req;
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size_t gb_len;
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int r;
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skb_trim(skb, skb->len - 1);
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if (!skb->len) {
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r = -EIO;
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goto exit;
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}
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if (skb->len < ST21NFCA_ATR_REQ_MIN_SIZE) {
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r = -EPROTO;
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goto exit;
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}
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atr_req = (struct st21nfca_atr_req *)skb->data;
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if (atr_req->length < sizeof(struct st21nfca_atr_req)) {
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r = -EPROTO;
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goto exit;
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}
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r = st21nfca_tm_send_atr_res(hdev, atr_req);
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if (r)
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goto exit;
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gb_len = skb->len - sizeof(struct st21nfca_atr_req);
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r = nfc_tm_activated(hdev->ndev, NFC_PROTO_NFC_DEP_MASK,
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NFC_COMM_PASSIVE, atr_req->gbi, gb_len);
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if (r)
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goto exit;
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r = 0;
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exit:
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return r;
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}
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static int st21nfca_tm_send_psl_res(struct nfc_hci_dev *hdev,
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struct st21nfca_psl_req *psl_req)
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{
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struct st21nfca_psl_res *psl_res;
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struct sk_buff *skb;
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u8 bitrate[2] = {0, 0};
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int r;
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skb = alloc_skb(sizeof(struct st21nfca_psl_res), GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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skb_put(skb, sizeof(struct st21nfca_psl_res));
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psl_res = (struct st21nfca_psl_res *)skb->data;
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psl_res->length = sizeof(struct st21nfca_psl_res);
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psl_res->cmd0 = ST21NFCA_NFCIP1_RES;
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psl_res->cmd1 = ST21NFCA_NFCIP1_PSL_RES;
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psl_res->did = psl_req->did;
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r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
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ST21NFCA_EVT_SEND_DATA, skb->data, skb->len);
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if (r < 0)
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goto error;
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/*
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* ST21NFCA only support P2P passive.
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* PSL_REQ BRS value != 0 has only a meaning to
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* change technology to type F.
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* We change to BITRATE 424Kbits.
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* In other case switch to BITRATE 106Kbits.
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*/
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if (ST21NFCA_PSL_REQ_SEND_SPEED(psl_req->brs) &&
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ST21NFCA_PSL_REQ_RECV_SPEED(psl_req->brs)) {
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bitrate[0] = ST21NFCA_CARD_BITRATE_424;
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bitrate[1] = ST21NFCA_CARD_BITRATE_424;
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}
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/* Send an event to change bitrate change event to card f */
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r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
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ST21NFCA_EVT_CARD_F_BITRATE, bitrate, 2);
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error:
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kfree_skb(skb);
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return r;
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}
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static int st21nfca_tm_recv_psl_req(struct nfc_hci_dev *hdev,
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struct sk_buff *skb)
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{
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struct st21nfca_psl_req *psl_req;
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int r;
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skb_trim(skb, skb->len - 1);
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if (!skb->len) {
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r = -EIO;
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goto exit;
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}
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psl_req = (struct st21nfca_psl_req *)skb->data;
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if (skb->len < sizeof(struct st21nfca_psl_req)) {
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r = -EIO;
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goto exit;
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}
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r = st21nfca_tm_send_psl_res(hdev, psl_req);
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exit:
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return r;
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}
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int st21nfca_tm_send_dep_res(struct nfc_hci_dev *hdev, struct sk_buff *skb)
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{
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int r;
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
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*(u8 *)skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni;
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*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_RES;
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*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_RES;
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*(u8 *)skb_push(skb, 1) = skb->len;
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r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
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ST21NFCA_EVT_SEND_DATA, skb->data, skb->len);
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kfree_skb(skb);
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return r;
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}
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EXPORT_SYMBOL(st21nfca_tm_send_dep_res);
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static int st21nfca_tm_recv_dep_req(struct nfc_hci_dev *hdev,
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struct sk_buff *skb)
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{
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struct st21nfca_dep_req_res *dep_req;
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u8 size;
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int r;
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
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skb_trim(skb, skb->len - 1);
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size = 4;
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dep_req = (struct st21nfca_dep_req_res *)skb->data;
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if (skb->len < size) {
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r = -EIO;
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goto exit;
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}
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if (ST21NFCA_NFC_DEP_DID_BIT_SET(dep_req->pfb))
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size++;
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if (ST21NFCA_NFC_DEP_NAD_BIT_SET(dep_req->pfb))
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size++;
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if (skb->len < size) {
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r = -EIO;
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goto exit;
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}
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/* Receiving DEP_REQ - Decoding */
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switch (ST21NFCA_NFC_DEP_PFB_TYPE(dep_req->pfb)) {
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case ST21NFCA_NFC_DEP_PFB_I_PDU:
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info->dep_info.curr_nfc_dep_pni =
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ST21NFCA_NFC_DEP_PFB_PNI(dep_req->pfb);
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break;
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case ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU:
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pr_err("Received a ACK/NACK PDU\n");
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break;
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case ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU:
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pr_err("Received a SUPERVISOR PDU\n");
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break;
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}
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skb_pull(skb, size);
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return nfc_tm_data_received(hdev->ndev, skb);
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exit:
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return r;
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}
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static int st21nfca_tm_event_send_data(struct nfc_hci_dev *hdev,
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struct sk_buff *skb)
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{
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u8 cmd0, cmd1;
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int r;
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cmd0 = skb->data[1];
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switch (cmd0) {
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case ST21NFCA_NFCIP1_REQ:
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cmd1 = skb->data[2];
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switch (cmd1) {
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case ST21NFCA_NFCIP1_ATR_REQ:
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r = st21nfca_tm_recv_atr_req(hdev, skb);
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break;
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case ST21NFCA_NFCIP1_PSL_REQ:
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r = st21nfca_tm_recv_psl_req(hdev, skb);
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break;
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case ST21NFCA_NFCIP1_DEP_REQ:
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r = st21nfca_tm_recv_dep_req(hdev, skb);
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break;
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default:
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return 1;
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}
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break;
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default:
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return 1;
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}
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return r;
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}
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/*
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* Returns:
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* <= 0: driver handled the event, skb consumed
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* 1: driver does not handle the event, please do standard processing
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*/
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int st21nfca_dep_event_received(struct nfc_hci_dev *hdev,
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u8 event, struct sk_buff *skb)
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{
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int r = 0;
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
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pr_debug("dep event: %d\n", event);
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switch (event) {
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case ST21NFCA_EVT_CARD_ACTIVATED:
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info->dep_info.curr_nfc_dep_pni = 0;
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break;
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case ST21NFCA_EVT_CARD_DEACTIVATED:
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break;
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case ST21NFCA_EVT_FIELD_ON:
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break;
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case ST21NFCA_EVT_FIELD_OFF:
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break;
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case ST21NFCA_EVT_SEND_DATA:
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r = st21nfca_tm_event_send_data(hdev, skb);
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if (r < 0)
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return r;
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return 0;
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default:
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nfc_err(&hdev->ndev->dev, "Unexpected event on card f gate\n");
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return 1;
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}
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kfree_skb(skb);
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return r;
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}
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EXPORT_SYMBOL(st21nfca_dep_event_received);
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static void st21nfca_im_send_psl_req(struct nfc_hci_dev *hdev, u8 did, u8 bsi,
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u8 bri, u8 lri)
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{
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struct sk_buff *skb;
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struct st21nfca_psl_req *psl_req;
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
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skb =
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alloc_skb(sizeof(struct st21nfca_psl_req) + 1, GFP_KERNEL);
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if (!skb)
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return;
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skb_reserve(skb, 1);
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skb_put(skb, sizeof(struct st21nfca_psl_req));
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psl_req = (struct st21nfca_psl_req *) skb->data;
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psl_req->length = sizeof(struct st21nfca_psl_req);
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psl_req->cmd0 = ST21NFCA_NFCIP1_REQ;
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psl_req->cmd1 = ST21NFCA_NFCIP1_PSL_REQ;
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psl_req->did = did;
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psl_req->brs = (0x30 & bsi << 4) | (bri & 0x03);
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psl_req->fsl = lri;
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*(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10;
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st21nfca_im_send_pdu(info, skb);
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}
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#define ST21NFCA_CB_TYPE_READER_F 1
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static void st21nfca_im_recv_atr_res_cb(void *context, struct sk_buff *skb,
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int err)
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{
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struct st21nfca_hci_info *info = context;
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struct st21nfca_atr_res *atr_res;
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int r;
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if (err != 0)
|
|
return;
|
|
|
|
if (!skb)
|
|
return;
|
|
|
|
switch (info->async_cb_type) {
|
|
case ST21NFCA_CB_TYPE_READER_F:
|
|
skb_trim(skb, skb->len - 1);
|
|
atr_res = (struct st21nfca_atr_res *)skb->data;
|
|
r = nfc_set_remote_general_bytes(info->hdev->ndev,
|
|
atr_res->gbi,
|
|
skb->len - sizeof(struct st21nfca_atr_res));
|
|
if (r < 0)
|
|
return;
|
|
|
|
if (atr_res->to >= 0x0e)
|
|
info->dep_info.to = 0x0e;
|
|
else
|
|
info->dep_info.to = atr_res->to + 1;
|
|
|
|
info->dep_info.to |= 0x10;
|
|
|
|
r = nfc_dep_link_is_up(info->hdev->ndev, info->dep_info.idx,
|
|
NFC_COMM_PASSIVE, NFC_RF_INITIATOR);
|
|
if (r < 0)
|
|
return;
|
|
|
|
info->dep_info.curr_nfc_dep_pni = 0;
|
|
if (ST21NFCA_PP2LRI(atr_res->ppi) != info->dep_info.lri)
|
|
st21nfca_im_send_psl_req(info->hdev, atr_res->did,
|
|
atr_res->bsi, atr_res->bri,
|
|
ST21NFCA_PP2LRI(atr_res->ppi));
|
|
break;
|
|
default:
|
|
kfree_skb(skb);
|
|
break;
|
|
}
|
|
}
|
|
|
|
int st21nfca_im_send_atr_req(struct nfc_hci_dev *hdev, u8 *gb, size_t gb_len)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
|
|
struct st21nfca_atr_req *atr_req;
|
|
struct nfc_target *target;
|
|
uint size;
|
|
|
|
info->dep_info.to = ST21NFCA_DEFAULT_TIMEOUT;
|
|
size = ST21NFCA_ATR_REQ_MIN_SIZE + gb_len;
|
|
if (size > ST21NFCA_ATR_REQ_MAX_SIZE) {
|
|
PROTOCOL_ERR("14.6.1.1");
|
|
return -EINVAL;
|
|
}
|
|
|
|
skb =
|
|
alloc_skb(sizeof(struct st21nfca_atr_req) + gb_len + 1, GFP_KERNEL);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
skb_reserve(skb, 1);
|
|
|
|
skb_put(skb, sizeof(struct st21nfca_atr_req));
|
|
|
|
atr_req = (struct st21nfca_atr_req *)skb->data;
|
|
memset(atr_req, 0, sizeof(struct st21nfca_atr_req));
|
|
|
|
atr_req->cmd0 = ST21NFCA_NFCIP1_REQ;
|
|
atr_req->cmd1 = ST21NFCA_NFCIP1_ATR_REQ;
|
|
memset(atr_req->nfcid3, 0, NFC_NFCID3_MAXSIZE);
|
|
target = hdev->ndev->targets;
|
|
|
|
if (target->sensf_res_len > 0)
|
|
memcpy(atr_req->nfcid3, target->sensf_res,
|
|
target->sensf_res_len);
|
|
else
|
|
get_random_bytes(atr_req->nfcid3, NFC_NFCID3_MAXSIZE);
|
|
|
|
atr_req->did = 0x0;
|
|
|
|
atr_req->bsi = 0x00;
|
|
atr_req->bri = 0x00;
|
|
atr_req->ppi = ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B;
|
|
if (gb_len) {
|
|
atr_req->ppi |= ST21NFCA_GB_BIT;
|
|
skb_put_data(skb, gb, gb_len);
|
|
}
|
|
atr_req->length = sizeof(struct st21nfca_atr_req) + hdev->gb_len;
|
|
|
|
*(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10; /* timeout */
|
|
|
|
info->async_cb_type = ST21NFCA_CB_TYPE_READER_F;
|
|
info->async_cb_context = info;
|
|
info->async_cb = st21nfca_im_recv_atr_res_cb;
|
|
info->dep_info.bri = atr_req->bri;
|
|
info->dep_info.bsi = atr_req->bsi;
|
|
info->dep_info.lri = ST21NFCA_PP2LRI(atr_req->ppi);
|
|
|
|
return nfc_hci_send_cmd_async(hdev, ST21NFCA_RF_READER_F_GATE,
|
|
ST21NFCA_WR_XCHG_DATA, skb->data,
|
|
skb->len, info->async_cb, info);
|
|
}
|
|
EXPORT_SYMBOL(st21nfca_im_send_atr_req);
|
|
|
|
static void st21nfca_im_recv_dep_res_cb(void *context, struct sk_buff *skb,
|
|
int err)
|
|
{
|
|
struct st21nfca_hci_info *info = context;
|
|
struct st21nfca_dep_req_res *dep_res;
|
|
|
|
int size;
|
|
|
|
if (err != 0)
|
|
return;
|
|
|
|
if (!skb)
|
|
return;
|
|
|
|
switch (info->async_cb_type) {
|
|
case ST21NFCA_CB_TYPE_READER_F:
|
|
dep_res = (struct st21nfca_dep_req_res *)skb->data;
|
|
|
|
size = 3;
|
|
if (skb->len < size)
|
|
goto exit;
|
|
|
|
if (ST21NFCA_NFC_DEP_DID_BIT_SET(dep_res->pfb))
|
|
size++;
|
|
if (ST21NFCA_NFC_DEP_NAD_BIT_SET(dep_res->pfb))
|
|
size++;
|
|
|
|
if (skb->len < size)
|
|
goto exit;
|
|
|
|
skb_trim(skb, skb->len - 1);
|
|
|
|
/* Receiving DEP_REQ - Decoding */
|
|
switch (ST21NFCA_NFC_DEP_PFB_TYPE(dep_res->pfb)) {
|
|
case ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU:
|
|
pr_err("Received a ACK/NACK PDU\n");
|
|
/* fall through */
|
|
case ST21NFCA_NFC_DEP_PFB_I_PDU:
|
|
info->dep_info.curr_nfc_dep_pni =
|
|
ST21NFCA_NFC_DEP_PFB_PNI(dep_res->pfb + 1);
|
|
size++;
|
|
skb_pull(skb, size);
|
|
nfc_tm_data_received(info->hdev->ndev, skb);
|
|
break;
|
|
case ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU:
|
|
pr_err("Received a SUPERVISOR PDU\n");
|
|
skb_pull(skb, size);
|
|
*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ;
|
|
*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ;
|
|
*(u8 *)skb_push(skb, 1) = skb->len;
|
|
*(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10;
|
|
|
|
st21nfca_im_send_pdu(info, skb);
|
|
break;
|
|
}
|
|
|
|
return;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
exit:
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
int st21nfca_im_send_dep_req(struct nfc_hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
|
|
|
|
info->async_cb_type = ST21NFCA_CB_TYPE_READER_F;
|
|
info->async_cb_context = info;
|
|
info->async_cb = st21nfca_im_recv_dep_res_cb;
|
|
|
|
*(u8 *)skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni;
|
|
*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ;
|
|
*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ;
|
|
*(u8 *)skb_push(skb, 1) = skb->len;
|
|
|
|
*(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10;
|
|
|
|
return nfc_hci_send_cmd_async(hdev, ST21NFCA_RF_READER_F_GATE,
|
|
ST21NFCA_WR_XCHG_DATA,
|
|
skb->data, skb->len,
|
|
info->async_cb, info);
|
|
}
|
|
EXPORT_SYMBOL(st21nfca_im_send_dep_req);
|
|
|
|
void st21nfca_dep_init(struct nfc_hci_dev *hdev)
|
|
{
|
|
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
|
|
|
|
INIT_WORK(&info->dep_info.tx_work, st21nfca_tx_work);
|
|
info->dep_info.curr_nfc_dep_pni = 0;
|
|
info->dep_info.idx = 0;
|
|
info->dep_info.to = ST21NFCA_DEFAULT_TIMEOUT;
|
|
}
|
|
EXPORT_SYMBOL(st21nfca_dep_init);
|
|
|
|
void st21nfca_dep_deinit(struct nfc_hci_dev *hdev)
|
|
{
|
|
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
|
|
|
|
cancel_work_sync(&info->dep_info.tx_work);
|
|
}
|
|
EXPORT_SYMBOL(st21nfca_dep_deinit);
|