NFC: nci: Add NFCEE discover support

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>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
index 5e508741f208..31ad795aa4b5 100644
--- a/include/net/nfc/nci_core.h
+++ b/include/net/nfc/nci_core.h
@@ -100,6 +100,8 @@ struct nci_conn_info {
         struct sk_buff *rx_skb;
 };
 
+#define NCI_INVALID_CONN_ID 0x80
+
 /* NCI Core structures */
 struct nci_dev {
         struct nfc_dev          *nfc_dev;
@@ -182,6 +184,8 @@ void nci_unregister_device(struct nci_dev *ndev);
 int nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb);
 int nci_set_config(struct nci_dev *ndev, __u8 id, size_t len, __u8 *val);
 
+int nci_nfcee_discover(struct nci_dev *ndev, u8 action);
+
 static inline struct sk_buff *nci_skb_alloc(struct nci_dev *ndev,
                                             unsigned int len,
                                             gfp_t how)