NFC: Set the NFC device RF mode appropriately

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

3 files changed, 12 insertions, 5 deletions

diff --git a/include/linux/nfc.h b/include/linux/nfc.h
index d124e9273fcb..f4e6dd915b1c 100644
--- a/include/linux/nfc.h
+++ b/include/linux/nfc.h
@@ -146,6 +146,7 @@ enum nfc_attrs {
 /* NFC RF modes */
 #define NFC_RF_INITIATOR 0
 #define NFC_RF_TARGET    1
+#define NFC_RF_NONE      2
 
 /* NFC protocols masks used in bitsets */
 #define NFC_PROTO_JEWEL_MASK    (1 << NFC_PROTO_JEWEL)
diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h
index 41573b4bd78a..a6a7b49a3e2d 100644
--- a/include/net/nfc/nfc.h
+++ b/include/net/nfc/nfc.h
@@ -100,10 +100,10 @@ struct nfc_dev {
         int targets_generation;
         struct device dev;
         bool dev_up;
+        u8 rf_mode;
         bool polling;
         struct nfc_target *active_target;
         bool dep_link_up;
-        u32 dep_rf_mode;
         struct nfc_genl_data genl_data;
         u32 supported_protocols;
 
diff --git a/net/nfc/core.c b/net/nfc/core.c
index 17f147430b7c..722a0c76c669 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -144,8 +144,10 @@ int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols)
         }
 
         rc = dev->ops->start_poll(dev, im_protocols, tm_protocols);
-        if (!rc)
+        if (!rc) {
                 dev->polling = true;
+                dev->rf_mode = NFC_RF_NONE;
+        }
 
 error:
         device_unlock(&dev->dev);
@@ -235,8 +237,10 @@ int nfc_dep_link_up(struct nfc_dev *dev, int target_index, u8 comm_mode)
         }
 
         rc = dev->ops->dep_link_up(dev, target, comm_mode, gb, gb_len);
-        if (!rc)
+        if (!rc) {
                 dev->active_target = target;
+                dev->rf_mode = NFC_RF_INITIATOR;
+        }
 
 error:
         device_unlock(&dev->dev);
@@ -264,7 +268,7 @@ int nfc_dep_link_down(struct nfc_dev *dev)
                 goto error;
         }
 
-        if (dev->dep_rf_mode == NFC_RF_TARGET) {
+        if (dev->rf_mode == NFC_RF_TARGET) {
                 rc = -EOPNOTSUPP;
                 goto error;
         }
@@ -286,7 +290,6 @@ int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx,
                        u8 comm_mode, u8 rf_mode)
 {
         dev->dep_link_up = true;
-        dev->dep_rf_mode = rf_mode;
 
         nfc_llcp_mac_is_up(dev, target_idx, comm_mode, rf_mode);
 
@@ -330,6 +333,7 @@ int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol)
         rc = dev->ops->activate_target(dev, target, protocol);
         if (!rc) {
                 dev->active_target = target;
+                dev->rf_mode = NFC_RF_INITIATOR;
 
                 if (dev->ops->check_presence)
                         mod_timer(&dev->check_pres_timer, jiffies +
@@ -470,6 +474,8 @@ int nfc_tm_activated(struct nfc_dev *dev, u32 protocol, u8 comm_mode,
                         goto out;
         }
 
+        dev->rf_mode = NFC_RF_TARGET;
+
         if (protocol == NFC_PROTO_NFC_DEP_MASK)
                 nfc_dep_link_is_up(dev, 0, comm_mode, NFC_RF_TARGET);