NFC: Initial Secure Element API

Each NFC adapter can have several links to different secure elements and
that property needs to be exported by the drivers.
A secure element link can be enabled and disabled, and card emulation will
be handled by the currently active one. Otherwise card emulation will be
host implemented.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/include/uapi/linux/nfc.h b/include/uapi/linux/nfc.h
index 0e63cee8d810..80e4ecd8c04c 100644
--- a/include/uapi/linux/nfc.h
+++ b/include/uapi/linux/nfc.h
@@ -67,6 +67,11 @@
  *      subsequent CONNECT and CC messages.
  *      If one of the passed parameters is wrong none is set and -EINVAL is
  *      returned.
+ * @NFC_CMD_ENABLE_SE: Enable the physical link to a specific secure element.
+ *      Once enabled a secure element will handle card emulation mode, i.e.
+ *      starting a poll from a device which has a secure element enabled means
+ *      we want to do SE based card emulation.
+ * @NFC_CMD_DISABLE_SE: Disable the physical link to a specific secure element.
  */
 enum nfc_commands {
         NFC_CMD_UNSPEC,
@@ -86,6 +91,8 @@ enum nfc_commands {
         NFC_EVENT_TM_DEACTIVATED,
         NFC_CMD_LLC_GET_PARAMS,
         NFC_CMD_LLC_SET_PARAMS,
+        NFC_CMD_ENABLE_SE,
+        NFC_CMD_DISABLE_SE,
 /* private: internal use only */
         __NFC_CMD_AFTER_LAST
 };
@@ -114,6 +121,7 @@ enum nfc_commands {
  * @NFC_ATTR_LLC_PARAM_LTO: Link TimeOut parameter
  * @NFC_ATTR_LLC_PARAM_RW: Receive Window size parameter
  * @NFC_ATTR_LLC_PARAM_MIUX: MIU eXtension parameter
+ * @NFC_ATTR_SE: Available Secure Elements
  */
 enum nfc_attrs {
         NFC_ATTR_UNSPEC,
@@ -134,6 +142,7 @@ enum nfc_attrs {
         NFC_ATTR_LLC_PARAM_LTO,
         NFC_ATTR_LLC_PARAM_RW,
         NFC_ATTR_LLC_PARAM_MIUX,
+        NFC_ATTR_SE,
 /* private: internal use only */
         __NFC_ATTR_AFTER_LAST
 };
@@ -172,6 +181,11 @@ enum nfc_attrs {
 #define NFC_PROTO_NFC_DEP_MASK    (1 << NFC_PROTO_NFC_DEP)
 #define NFC_PROTO_ISO14443_B_MASK (1 << NFC_PROTO_ISO14443_B)
 
+/* NFC Secure Elements */
+#define NFC_SE_NONE     0x0
+#define NFC_SE_UICC     0x1
+#define NFC_SE_EMBEDDED 0x2
+
 struct sockaddr_nfc {
         sa_family_t sa_family;
         __u32 dev_idx;