iwlagn: set traffic load based on multiple factors

Current BT traffic load should based on the following conditions:

1. BT On/Off status
2. Channel announcement enable/disable
3. Curren traffic load report from uCode

Need to modify rate scale to down-grade from MIMO to SISO if detected
high BT traffic load. Also need to make sure not using chain "B" with high
BT traffic or if it is in "full concurrency" mode.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 989e4a702602..4410f820c2f3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -2823,6 +2823,7 @@ static void __iwl_down(struct iwl_priv *priv)
         iwl_clear_driver_stations(priv);
 
         /* reset BT coex data */
+        priv->bt_status = 0;
         priv->bt_traffic_load = priv->cfg->bt_init_traffic_load;
         priv->bt_sco_active = false;
         priv->bt_full_concurrent = false;
@@ -3133,6 +3134,7 @@ static void iwl_bg_restart(struct work_struct *data)
                 bool bt_sco, bt_full_concurrent;
                 u8 bt_ci_compliance;
                 u8 bt_load;
+                u8 bt_status;
 
                 mutex_lock(&priv->mutex);
                 priv->vif = NULL;
@@ -3151,6 +3153,7 @@ static void iwl_bg_restart(struct work_struct *data)
                 bt_full_concurrent = priv->bt_full_concurrent;
                 bt_ci_compliance = priv->bt_ci_compliance;
                 bt_load = priv->bt_traffic_load;
+                bt_status = priv->bt_status;
 
                 __iwl_down(priv);
 
@@ -3158,6 +3161,7 @@ static void iwl_bg_restart(struct work_struct *data)
                 priv->bt_full_concurrent = bt_full_concurrent;
                 priv->bt_ci_compliance = bt_ci_compliance;
                 priv->bt_traffic_load = bt_load;
+                priv->bt_status = bt_status;
 
                 mutex_unlock(&priv->mutex);
                 iwl_cancel_deferred_work(priv);