ath6kl: Set optimal listen intvl,bmiss,scan params while going to wow suspend

* In order to save the target power in WOW suspend state,
  configure the best optimal values for the below parameters,
     - listen interval.
     - beacon miss interval.
     - scan parameters.

  Default values for above attributes are reverted in
  wow resume operation.

* The default listen interval is set before the host issue
  connect request.

* New function is added to configure beacon miss count.

kvalo: minor changes to fix open parenthesis alignment

Signed-off-by: Raja Mani <rmani@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

1 files changed, 58 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index 8d6bb323bb74..baa3895b1643 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -423,6 +423,7 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
         struct ath6kl_vif *vif = netdev_priv(dev);
         int status;
         u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE;
+        u16 interval;
 
         ath6kl_cfg80211_sscan_disable(vif);
 
@@ -577,6 +578,20 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
                    vif->grp_crypto_len, vif->ch_hint);
 
         vif->reconnect_flag = 0;
+
+        if (vif->nw_type == INFRA_NETWORK) {
+                interval = max(vif->listen_intvl_t,
+                               (u16) ATH6KL_MAX_WOW_LISTEN_INTL);
+                status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
+                                                       interval,
+                                                       0);
+                if (status) {
+                        ath6kl_err("couldn't set listen intervel\n");
+                        up(&ar->sem);
+                        return status;
+                }
+        }
+
         status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
                                         vif->dot11_auth_mode, vif->auth_mode,
                                         vif->prwise_crypto,
@@ -1911,7 +1926,7 @@ static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
         struct ath6kl_vif *vif;
         int ret, left;
         u32 filter = 0;
-        u16 i;
+        u16 i, bmiss_time;
         u8 index = 0;
         __be32 ips[MAX_IP_ADDRS];
 
@@ -1950,6 +1965,30 @@ static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
 
         netif_stop_queue(vif->ndev);
 
+        if (vif->nw_type != AP_NETWORK) {
+                ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
+                                                    ATH6KL_MAX_WOW_LISTEN_INTL,
+                                                    0);
+                if (ret)
+                        return ret;
+
+                /* Set listen interval x 15 times as bmiss time */
+                bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
+                if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
+                        bmiss_time = ATH6KL_MAX_BMISS_TIME;
+
+                ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
+                                               bmiss_time, 0);
+                if (ret)
+                        return ret;
+
+                ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
+                                                0xFFFF, 0, 0xFFFF, 0, 0, 0,
+                                                0, 0, 0, 0);
+                if (ret)
+                        return ret;
+        }
+
         ar->state = ATH6KL_STATE_SUSPENDING;
 
         /* Setup own IP addr for ARP agent. */
@@ -2041,6 +2080,23 @@ static int ath6kl_wow_resume(struct ath6kl *ar)
                 return ret;
         }
 
+        if (vif->nw_type != AP_NETWORK) {
+                ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
+                                                0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
+                if (ret)
+                        return ret;
+
+                ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
+                                                    vif->listen_intvl_t, 0);
+                if (ret)
+                        return ret;
+
+                ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
+                                               vif->bmiss_time_t, 0);
+                if (ret)
+                        return ret;
+        }
+
         ar->state = ATH6KL_STATE_ON;
 
         netif_wake_queue(vif->ndev);
@@ -3034,6 +3090,7 @@ struct net_device *ath6kl_interface_add(struct ath6kl *ar, char *name,
         vif->fw_vif_idx = fw_vif_idx;
         vif->nw_type = vif->next_mode = nw_type;
         vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL;
+        vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME;
 
         memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
         if (fw_vif_idx != 0)