iwlwifi: disable disconnected antenna for advanced bt coex

Disconnected antenna algorithm is used to find out which antennas are
disconnected. It should be disabled for devices that support advanced
bluetooth coexist.

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

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-calib.c b/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
index b4cfc3c1628547989b0bbb0d172184f459357b5d..d16bb5ede01474d9b30631b1ee769890aa257a8f 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
@@ -801,13 +801,7 @@ static void iwl_find_disconn_antenna(struct iwl_priv *priv, u32* average_sig,
         * To be safe, simply mask out any chains that we know
         * are not on the device.
         */
-       if (priv->cfg->bt_params &&
-           priv->cfg->bt_params->advanced_bt_coexist &&
-           priv->bt_full_concurrent) {
-               /* operated as 1x1 in full concurrency mode */
-               active_chains &= first_antenna(priv->hw_params.valid_rx_ant);
-       } else
-               active_chains &= priv->hw_params.valid_rx_ant;
+       active_chains &= priv->hw_params.valid_rx_ant;
 
        num_tx_chains = 0;
        for (i = 0; i < NUM_RX_CHAINS; i++) {
@@ -985,7 +979,16 @@ void iwl_chain_noise_calibration(struct iwl_priv *priv, void *stat_resp)
                return;
 
        /* Analyze signal for disconnected antenna */
-       iwl_find_disconn_antenna(priv, average_sig, data);
+       if (priv->cfg->bt_params &&
+           priv->cfg->bt_params->advanced_bt_coexist) {
+               /* Disable disconnected antenna algorithm for advanced
+                  bt coex, assuming valid antennas are connected */
+               data->active_chains = priv->hw_params.valid_rx_ant;
+               for (i = 0; i < NUM_RX_CHAINS; i++)
+                       if (!(data->active_chains & (1<<i)))
+                               data->disconn_array[i] = 1;
+       } else
+               iwl_find_disconn_antenna(priv, average_sig, data);
 
        /* Analyze noise for rx balance */
        average_noise[0] = data->chain_noise_a /