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NFC: nci: Add NFCEE discover support

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NFCEEs (NFC Execution Environment) have to be explicitly
discovered by sending the NCI_OP_NFCEE_DISCOVER_CMD
command. The NFCC will respond to this command by telling
us how many NFCEEs are connected to it. Then the NFCC sends
a notification command for each and every NFCEE connected.
Here we implement support for sending
NCI_OP_NFCEE_DISCOVER_CMD command, receiving the response
and the potential notifications.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Christophe Ricard
2015-02-01 22:26:10 +01:00
committed by Samuel Ortiz
parent 8277f6937a
commit af9c8aa67d
4 changed files with 72 additions and 0 deletions
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30
net/nfc/nci/ntf.c
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@@ -713,6 +713,33 @@ static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
nci_req_complete(ndev, NCI_STATUS_OK);
}
static void nci_nfcee_discover_ntf_packet(struct nci_dev *ndev,
struct sk_buff *skb)
{
u8 status = NCI_STATUS_OK;
struct nci_conn_info *conn_info;
struct nci_nfcee_discover_ntf *nfcee_ntf =
(struct nci_nfcee_discover_ntf *)skb->data;
pr_debug("\n");
conn_info = devm_kzalloc(&ndev->nfc_dev->dev,
sizeof(struct nci_conn_info), GFP_KERNEL);
if (!conn_info) {
status = NCI_STATUS_REJECTED;
goto exit;
}
conn_info->id = nfcee_ntf->nfcee_id;
conn_info->conn_id = NCI_INVALID_CONN_ID;
INIT_LIST_HEAD(&conn_info->list);
list_add(&conn_info->list, &ndev->conn_info_list);
exit:
nci_req_complete(ndev, status);
}
void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
{
__u16 ntf_opcode = nci_opcode(skb->data);
@@ -751,6 +778,9 @@ void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
nci_rf_deactivate_ntf_packet(ndev, skb);
break;
case NCI_OP_NFCEE_DISCOVER_NTF:
nci_nfcee_discover_ntf_packet(ndev, skb);
break;
default:
pr_err("unknown ntf opcode 0x%x\n", ntf_opcode);
break;