From f7f793f31378d5e83276871339c2a8374b0e8657 Mon Sep 17 00:00:00 2001 From: Christophe Ricard Date: Sun, 1 Feb 2015 22:26:11 +0100 Subject: [PATCH] NFC: nci: Add NFCEE enabling and disabling support NFCEEs can be enabled or disabled by sending the NCI_OP_NFCEE_MODE_SET_CMD command to the NFCC. This patch provides an API for drivers to enable and disable e.g. their NCI discoveredd secure elements. Signed-off-by: Christophe Ricard Signed-off-by: Samuel Ortiz --- include/net/nfc/nci.h | 9 +++++++++ include/net/nfc/nci_core.h | 1 + net/nfc/nci/core.c | 21 +++++++++++++++++++++ net/nfc/nci/rsp.c | 13 +++++++++++++ 4 files changed, 44 insertions(+) diff --git a/include/net/nfc/nci.h b/include/net/nfc/nci.h index 6d99e8f79835..230f227bb319 100644 --- a/include/net/nfc/nci.h +++ b/include/net/nfc/nci.h @@ -284,6 +284,14 @@ struct nci_nfcee_discover_cmd { __u8 discovery_action; } __packed; +#define NCI_OP_NFCEE_MODE_SET_CMD nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x01) +#define NCI_NFCEE_DISABLE 0x00 +#define NCI_NFCEE_ENABLE 0x01 +struct nci_nfcee_mode_set_cmd { + __u8 nfcee_id; + __u8 nfcee_mode; +} __packed; + /* ----------------------- */ /* ---- NCI Responses ---- */ /* ----------------------- */ @@ -333,6 +341,7 @@ struct nci_nfcee_discover_rsp { __u8 num_nfcee; } __packed; +#define NCI_OP_NFCEE_MODE_SET_RSP nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x01) /* --------------------------- */ /* ---- NCI Notifications ---- */ /* --------------------------- */ diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h index 31ad795aa4b5..6cf6ee2b696d 100644 --- a/include/net/nfc/nci_core.h +++ b/include/net/nfc/nci_core.h @@ -185,6 +185,7 @@ 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); +int nci_nfcee_mode_set(struct nci_dev *ndev, u8 nfcee_id, u8 nfcee_mode); static inline struct sk_buff *nci_skb_alloc(struct nci_dev *ndev, unsigned int len, diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c index a25857548524..e5fb8c8eed94 100644 --- a/net/nfc/nci/core.c +++ b/net/nfc/nci/core.c @@ -486,6 +486,27 @@ int nci_nfcee_discover(struct nci_dev *ndev, u8 action) } EXPORT_SYMBOL(nci_nfcee_discover); +static void nci_nfcee_mode_set_req(struct nci_dev *ndev, unsigned long opt) +{ + struct nci_nfcee_mode_set_cmd *cmd = + (struct nci_nfcee_mode_set_cmd *)opt; + + nci_send_cmd(ndev, NCI_OP_NFCEE_MODE_SET_CMD, + sizeof(struct nci_nfcee_mode_set_cmd), cmd); +} + +int nci_nfcee_mode_set(struct nci_dev *ndev, u8 nfcee_id, u8 nfcee_mode) +{ + struct nci_nfcee_mode_set_cmd cmd; + + cmd.nfcee_id = nfcee_id; + cmd.nfcee_mode = nfcee_mode; + + return nci_request(ndev, nci_nfcee_mode_set_req, (unsigned long)&cmd, + msecs_to_jiffies(NCI_CMD_TIMEOUT)); +} +EXPORT_SYMBOL(nci_nfcee_mode_set); + static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev) { struct nci_dev *ndev = nfc_get_drvdata(nfc_dev); diff --git a/net/nfc/nci/rsp.c b/net/nfc/nci/rsp.c index ee094dfab2ed..0a3e98240dd6 100644 --- a/net/nfc/nci/rsp.c +++ b/net/nfc/nci/rsp.c @@ -213,6 +213,15 @@ static void nci_nfcee_discover_rsp_packet(struct nci_dev *ndev, nci_req_complete(ndev, discover_rsp->status); } +static void nci_nfcee_mode_set_rsp_packet(struct nci_dev *ndev, + struct sk_buff *skb) +{ + __u8 status = skb->data[0]; + + pr_debug("status 0x%x\n", status); + nci_req_complete(ndev, status); +} + void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb) { __u16 rsp_opcode = nci_opcode(skb->data); @@ -262,6 +271,10 @@ void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb) nci_nfcee_discover_rsp_packet(ndev, skb); break; + case NCI_OP_NFCEE_MODE_SET_RSP: + nci_nfcee_mode_set_rsp_packet(ndev, skb); + break; + default: pr_err("unknown rsp opcode 0x%x\n", rsp_opcode); break; -- 2.39.5