[v2 1/8] rsi: add support for rf-kill functionality

[Amitkumar Karwar]

From: Pavani Muthyala <pavani.muthy...@redpinesignals.com>

This patch implements rfkill_poll handler. Also, necessary changes
are done in interface up and down handler to support rfkill
functionality.

Signed-off-by: Pavani Muthyala <pavani.muthy...@redpinesignals.com>
Signed-off-by: Amitkumar Karwar <amit.kar...@redpinesignals.com>
---
 drivers/net/wireless/rsi/rsi_91x_mac80211.c | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/rsi/rsi_91x_mac80211.c 
b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
index c91d6ef..193f922 100644
--- a/drivers/net/wireless/rsi/rsi_91x_mac80211.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
@@ -279,11 +279,12 @@ static int rsi_mac80211_start(struct ieee80211_hw *hw)
        struct rsi_hw *adapter = hw->priv;
        struct rsi_common *common = adapter->priv;
 
+       rsi_dbg(ERR_ZONE, "===> Interface UP <===\n");
        mutex_lock(&common->mutex);
        common->iface_down = false;
-       mutex_unlock(&common->mutex);
-
+       wiphy_rfkill_start_polling(hw->wiphy);
        rsi_send_rx_filter_frame(common, 0);
+       mutex_unlock(&common->mutex);
 
        return 0;
 }
@@ -299,8 +300,10 @@ static void rsi_mac80211_stop(struct ieee80211_hw *hw)
        struct rsi_hw *adapter = hw->priv;
        struct rsi_common *common = adapter->priv;
 
+       rsi_dbg(ERR_ZONE, "===> Interface DOWN <===\n");
        mutex_lock(&common->mutex);
        common->iface_down = true;
+       wiphy_rfkill_stop_polling(hw->wiphy);
 
        /* Block all rx frames */
        rsi_send_rx_filter_frame(common, 0xffff);
@@ -1214,6 +1217,19 @@ static void rsi_reg_notify(struct wiphy *wiphy,
        mutex_unlock(&common->mutex);
 }
 
+static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw)
+{
+       struct rsi_hw *adapter = hw->priv;
+       struct rsi_common *common = adapter->priv;
+
+       mutex_lock(&common->mutex);
+       if (common->fsm_state != FSM_MAC_INIT_DONE)
+               wiphy_rfkill_set_hw_state(hw->wiphy, true);
+       else
+               wiphy_rfkill_set_hw_state(hw->wiphy, false);
+       mutex_unlock(&common->mutex);
+}
+
 static struct ieee80211_ops mac80211_ops = {
        .tx = rsi_mac80211_tx,
        .start = rsi_mac80211_start,
@@ -1232,6 +1248,7 @@ static struct ieee80211_ops mac80211_ops = {
        .sta_remove = rsi_mac80211_sta_remove,
        .set_antenna = rsi_mac80211_set_antenna,
        .get_antenna = rsi_mac80211_get_antenna,
+       .rfkill_poll = rsi_mac80211_rfkill_poll,
 };
 
 /**
-- 
2.7.4