ath9k: BT coex performance tuning for AR9462

Use smaller aggregation limit and increasing aggregation threshold
for osla that could improve wlan performance when there is HID profile.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.c b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
index 8b09a82..b1ced2a 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
@@ -1381,9 +1381,6 @@ u32 ar9003_mci_state(struct ath_hw *ah, u32 state_type, u32 *p_data)
        case MCI_STATE_NEED_FTP_STOMP:
                value = !(mci->config & ATH_MCI_CONFIG_DISABLE_FTP_STOMP);
                break;
-       case MCI_STATE_NEED_TUNING:
-               value = !(mci->config & ATH_MCI_CONFIG_DISABLE_TUNING);
-               break;
        default:
                break;
        }

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.h b/drivers/net/wireless/ath/ath9k/ar9003_mci.h
index f4a6a44..10282e2 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ar9003_mci.h
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.h
@@ -212,7 +212,6 @@ enum mci_state_type {
        MCI_STATE_SET_CONCUR_TX_PRI,
        MCI_STATE_RECOVER_RX,
        MCI_STATE_NEED_FTP_STOMP,
-       MCI_STATE_NEED_TUNING,
        MCI_STATE_DEBUG,
        MCI_STATE_MAX
 };

diff --git a/drivers/net/wireless/ath/ath9k/mci.c b/drivers/net/wireless/ath/ath9k/mci.c
index 7b553f6..49137f4 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/mci.c
+++ b/drivers/net/wireless/ath/ath9k/mci.c
@@ -116,42 +116,58 @@ static void ath_mci_update_scheme(struct ath_softc *sc)
        struct ath_common *common = ath9k_hw_common(sc->sc_ah);
        struct ath_btcoex *btcoex = &sc->btcoex;
        struct ath_mci_profile *mci = &btcoex->mci;
+       struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;
        struct ath_mci_profile_info *info;
        u32 num_profile = NUM_PROF(mci);
 
+       if (mci_hw->config & ATH_MCI_CONFIG_DISABLE_TUNING)
+               goto skip_tuning;
+
        if (num_profile == 1) {
                info = list_first_entry(&mci->info,
                                        struct ath_mci_profile_info,
                                        list);
-               if (mci->num_sco && info->T == 12) {
-                       mci->aggr_limit = 8;
+               if (mci->num_sco) {
+                       if (info->T == 12)
+                               mci->aggr_limit = 8;
+                       else if (info->T == 6) {
+                               mci->aggr_limit = 6;
+                               btcoex->duty_cycle = 30;
+                       }
                        ath_dbg(common, MCI,
-                               "Single SCO, aggregation limit 2 ms\n");
-               } else if ((info->type == MCI_GPM_COEX_PROFILE_BNEP) &&
-                          !info->master) {
-                       btcoex->btcoex_period = 60;
+                               "Single SCO, aggregation limit %d 1/4 ms\n",
+                               mci->aggr_limit);
+               } else if (mci->num_pan || mci->num_other_acl) {
+                       /*
+                        * For single PAN/FTP profile, allocate 35% for BT
+                        * to improve WLAN throughput.
+                        */
+                       btcoex->duty_cycle = 35;
+                       btcoex->btcoex_period = 53;
                        ath_dbg(common, MCI,
-                               "Single slave PAN/FTP, bt period 60 ms\n");
-               } else if ((info->type == MCI_GPM_COEX_PROFILE_HID) &&
-                        (info->T > 0 && info->T < 50) &&
-                        (info->A > 1 || info->W > 1)) {
+                               "Single PAN/FTP bt period %d ms dutycycle %d\n",
+                               btcoex->duty_cycle, btcoex->btcoex_period);
+               } else if (mci->num_hid) {
                        btcoex->duty_cycle = 30;
-                       mci->aggr_limit = 8;
+                       mci->aggr_limit = 6;
                        ath_dbg(common, MCI,
                                "Multiple attempt/timeout single HID "
-                               "aggregation limit 2 ms dutycycle 30%%\n");
+                               "aggregation limit 1.5 ms dutycycle 30%%\n");
                }
-       } else if ((num_profile == 2) && (mci->num_hid == 2)) {
-               btcoex->duty_cycle = 30;
-               mci->aggr_limit = 8;
-               ath_dbg(common, MCI,
-                       "Two HIDs aggregation limit 2 ms dutycycle 30%%\n");
-       } else if (num_profile > 3) {
+       } else if (num_profile == 2) {
+               if (mci->num_hid == 2)
+                       btcoex->duty_cycle = 30;
                mci->aggr_limit = 6;
                ath_dbg(common, MCI,
-                       "Three or more profiles aggregation limit 1.5 ms\n");
+                       "Two BT profiles aggr limit 1.5 ms dutycycle %d%%\n",
+                       btcoex->duty_cycle);
+       } else if (num_profile >= 3) {
+               mci->aggr_limit = 4;
+               ath_dbg(common, MCI,
+                       "Three or more profiles aggregation limit 1 ms\n");
        }
 
+skip_tuning:
        if (IS_CHAN_2GHZ(sc->sc_ah->curchan)) {
                if (IS_CHAN_HT(sc->sc_ah->curchan))
                        ath_mci_adjust_aggr_limit(btcoex);