NFC: Extend netlink interface for LTO, RW, and MIUX parameters support

NFC_CMD_LLC_GET_PARAMS: request LTO, RW, and MIUX parameters for a device

NFC_CMD_LLC_SET_PARAMS: set one or more of LTO, RW, and MIUX parameters for
a device. LTO must be set before the link is up otherwise -EINPROGRESS is
returned. RW and MIUX can be set at anytime and will be passed in subsequent
CONNECT and CC messages. If one of the passed parameters is wrong none is
set and -EINVAL is returned.

Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/uapi/linux/nfc.h b/include/uapi/linux/nfc.h
index d908d17da56d..0e63cee8d810 100644
--- a/include/uapi/linux/nfc.h
+++ b/include/uapi/linux/nfc.h
@@ -60,6 +60,13 @@
  *      target mode.
  * @NFC_EVENT_DEVICE_DEACTIVATED: event emitted when the adapter is deactivated
  *      from target mode.
+ * @NFC_CMD_LLC_GET_PARAMS: request LTO, RW, and MIUX parameters for a device
+ * @NFC_CMD_LLC_SET_PARAMS: set one or more of LTO, RW, and MIUX parameters for
+ *      a device. LTO must be set before the link is up otherwise -EINPROGRESS
+ *      is returned. RW and MIUX can be set at anytime and will be passed in
+ *      subsequent CONNECT and CC messages.
+ *      If one of the passed parameters is wrong none is set and -EINVAL is
+ *      returned.
  */
 enum nfc_commands {
         NFC_CMD_UNSPEC,
@@ -77,6 +84,8 @@ enum nfc_commands {
         NFC_EVENT_TARGET_LOST,
         NFC_EVENT_TM_ACTIVATED,
         NFC_EVENT_TM_DEACTIVATED,
+        NFC_CMD_LLC_GET_PARAMS,
+        NFC_CMD_LLC_SET_PARAMS,
 /* private: internal use only */
         __NFC_CMD_AFTER_LAST
 };
@@ -102,6 +111,9 @@ enum nfc_commands {
  * @NFC_ATTR_RF_MODE: Initiator or target
  * @NFC_ATTR_IM_PROTOCOLS: Initiator mode protocols to poll for
  * @NFC_ATTR_TM_PROTOCOLS: Target mode protocols to listen for
+ * @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
  */
 enum nfc_attrs {
         NFC_ATTR_UNSPEC,
@@ -119,6 +131,9 @@ enum nfc_attrs {
         NFC_ATTR_DEVICE_POWERED,
         NFC_ATTR_IM_PROTOCOLS,
         NFC_ATTR_TM_PROTOCOLS,
+        NFC_ATTR_LLC_PARAM_LTO,
+        NFC_ATTR_LLC_PARAM_RW,
+        NFC_ATTR_LLC_PARAM_MIUX,
 /* private: internal use only */
         __NFC_ATTR_AFTER_LAST
 };