iwlwifi: consider BT for power management

Check the BT PSPoll flag when fill PM command to uCode

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

drivers/net/wireless/iwlwifi/iwl-6000.c

@@ -549,6 +549,7 @@ static struct iwl_bt_params iwl6000_bt_params = {
 	.agg_time_limit = BT_AGG_THRESHOLD_DEF,
 	.bt_init_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_NONE,
 	.bt_prio_boost = IWLAGN_BT_PRIO_BOOST_DEFAULT,
+	.bt_sco_disable = true,
 };
 
 struct iwl_cfg iwl6000g2a_2agn_cfg = {

drivers/net/wireless/iwlwifi/iwl-agn-lib.c

@@ -1829,6 +1829,10 @@ void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 	} else {
 		bt_cmd.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 					IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
+		if (priv->cfg->bt_params &&
+		    priv->cfg->bt_params->bt_sco_disable)
+			bt_cmd.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
+
 		if (priv->bt_ch_announce)
 			bt_cmd.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 		IWL_DEBUG_INFO(priv, "BT coex flag: 0X%x\n", bt_cmd.flags);

drivers/net/wireless/iwlwifi/iwl-core.h

@@ -334,6 +334,7 @@ struct iwl_base_params {
  * @agg_time_limit: maximum number of uSec in aggregation
  * @ampdu_factor: Maximum A-MPDU length factor
  * @ampdu_density: Minimum A-MPDU spacing
+ * @bt_sco_disable: uCode should not response to BT in SCO/ESCO mode
 */
 struct iwl_bt_params {
 	bool advanced_bt_coexist;
@@ -343,6 +344,7 @@ struct iwl_bt_params {
 	u16 agg_time_limit;
 	u8 ampdu_factor;
 	u8 ampdu_density;
+	bool bt_sco_disable;
 };
 /*
  * @use_rts_for_aggregation: use rts/cts protection for HT traffic

drivers/net/wireless/iwlwifi/iwl-power.c

@@ -163,6 +163,15 @@ static void iwl_static_sleep_cmd(struct iwl_priv *priv,
 	else
 		cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
 
+	if (priv->cfg->bt_params &&
+	    priv->cfg->bt_params->advanced_bt_coexist) {
+		if (!priv->cfg->bt_params->bt_sco_disable)
+			cmd->flags |= IWL_POWER_BT_SCO_ENA;
+		else
+			cmd->flags &= ~IWL_POWER_BT_SCO_ENA;
+	}
+
+
 	slp_itrvl = le32_to_cpu(cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]);
 	if (slp_itrvl > IWL_CONN_MAX_LISTEN_INTERVAL)
 		cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1] =
@@ -236,6 +245,14 @@ static void iwl_power_fill_sleep_cmd(struct iwl_priv *priv,
 	if (priv->power_data.pci_pm)
 		cmd->flags |= IWL_POWER_PCI_PM_MSK;
 
+	if (priv->cfg->bt_params &&
+	    priv->cfg->bt_params->advanced_bt_coexist) {
+		if (!priv->cfg->bt_params->bt_sco_disable)
+			cmd->flags |= IWL_POWER_BT_SCO_ENA;
+		else
+			cmd->flags &= ~IWL_POWER_BT_SCO_ENA;
+	}
+
 	cmd->rx_data_timeout = cpu_to_le32(1000 * dynps_ms);
 	cmd->tx_data_timeout = cpu_to_le32(1000 * dynps_ms);