ar9170: add get_survey callback in order to get channel noise

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Christian Lamparter <chunkeey@googlemail.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ar9170/main.c b/drivers/net/wireless/ath/ar9170/main.c
index 5e2c51433967..c67b05f3bcbd 100644
--- a/drivers/net/wireless/ath/ar9170/main.c
+++ b/drivers/net/wireless/ath/ar9170/main.c
@@ -1905,6 +1905,24 @@ static int ar9170_get_stats(struct ieee80211_hw *hw,
         return 0;
 }
 
+static int ar9170_get_survey(struct ieee80211_hw *hw, int idx,
+                                struct survey_info *survey)
+{
+        struct ar9170 *ar = hw->priv;
+        struct ieee80211_conf *conf = &hw->conf;
+
+        if (idx != 0)
+                return -ENOENT;
+
+        /* TODO: update noise value, e.g. call ar9170_set_channel */
+
+        survey->channel = conf->channel;
+        survey->filled = SURVEY_INFO_NOISE_DBM;
+        survey->noise = ar->noise[0];
+
+        return 0;
+}
+
 static int ar9170_conf_tx(struct ieee80211_hw *hw, u16 queue,
                           const struct ieee80211_tx_queue_params *param)
 {
@@ -1957,6 +1975,7 @@ static const struct ieee80211_ops ar9170_ops = {
         .get_tsf                = ar9170_op_get_tsf,
         .set_key                = ar9170_set_key,
         .get_stats              = ar9170_get_stats,
+        .get_survey             = ar9170_get_survey,
         .ampdu_action           = ar9170_ampdu_action,
 };