--- /dev/null
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -652,9 +652,22 @@ static void ath9k_init_txpower_limits(st
+ ah->curchan = curchan;
+ }
+
++void ath9k_reload_chainmask_settings(struct ath_softc *sc)
++{
++ if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT))
++ return;
++
++ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
++ setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
++ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
++ setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
++}
++
++
+ void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
+ {
+- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
++ struct ath_hw *ah = sc->sc_ah;
++ struct ath_common *common = ath9k_hw_common(ah);
+
+ hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
+ IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
+@@ -692,6 +705,17 @@ void ath9k_set_hw_capab(struct ath_softc
+ hw->sta_data_size = sizeof(struct ath_node);
+ hw->vif_data_size = sizeof(struct ath_vif);
+
++ hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1;
++ hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1;
++
++ /* single chain devices with rx diversity */
++ if (ah->caps.max_rxchains == 1 &&
++ ath9k_hw_ops(ah)->antdiv_comb_conf_get)
++ hw->wiphy->available_antennas_rx = 3;
++
++ sc->ant_rx = hw->wiphy->available_antennas_rx;
++ sc->ant_tx = hw->wiphy->available_antennas_tx;
++
+ #ifdef CONFIG_ATH9K_RATE_CONTROL
+ hw->rate_control_algorithm = "ath9k_rate_control";
+ #endif
+@@ -703,12 +727,7 @@ void ath9k_set_hw_capab(struct ath_softc
+ hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
+ &sc->sbands[IEEE80211_BAND_5GHZ];
+
+- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
+- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
+- setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
+- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
+- setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
+- }
++ ath9k_reload_chainmask_settings(sc);
+
+ SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
+ }
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -652,6 +652,7 @@ struct ath_softc {
+ struct ath_descdma txsdma;
+
+ struct ath_ant_comb ant_comb;
++ u32 ant_tx, ant_rx;
+ };
+
+ void ath9k_tasklet(unsigned long data);
+@@ -673,6 +674,7 @@ int ath9k_init_device(u16 devid, struct
+ const struct ath_bus_ops *bus_ops);
+ void ath9k_deinit_device(struct ath_softc *sc);
+ void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw);
++void ath9k_reload_chainmask_settings(struct ath_softc *sc);
+
+ void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw);
+ bool ath9k_uses_beacons(int type);
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -262,6 +262,22 @@ static bool ath_complete_reset(struct at
+ ath_start_ani(common);
+ }
+
++ if (ath9k_hw_ops(ah)->antdiv_comb_conf_get && sc->ant_rx != 3) {
++ struct ath_hw_antcomb_conf div_ant_conf;
++ u8 lna_conf;
++
++ ath9k_hw_antdiv_comb_conf_get(ah, &div_ant_conf);
++
++ if (sc->ant_rx == 1)
++ lna_conf = ATH_ANT_DIV_COMB_LNA1;
++ else
++ lna_conf = ATH_ANT_DIV_COMB_LNA2;
++ div_ant_conf.main_lna_conf = lna_conf;
++ div_ant_conf.alt_lna_conf = lna_conf;
++
++ ath9k_hw_antdiv_comb_conf_set(ah, &div_ant_conf);
++ }
++
+ ieee80211_wake_queues(sc->hw);
+
+ return true;
+@@ -2360,6 +2376,59 @@ static int ath9k_get_stats(struct ieee80
+ return 0;
+ }
+
++static u32 fill_chainmask(u32 cap, u32 new)
++{
++ u32 filled = 0;
++ int i;
++
++ for (i = 0; cap && new; i++, cap >>= 1) {
++ if (!(cap & BIT(0)))
++ continue;
++
++ if (new & BIT(0))
++ filled |= BIT(i);
++
++ new >>= 1;
++ }
++
++ return filled;
++}
++
++static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
++{
++ struct ath_softc *sc = hw->priv;
++ struct ath_hw *ah = sc->sc_ah;
++
++ if (!rx_ant || !tx_ant)
++ return -EINVAL;
++
++ sc->ant_rx = rx_ant;
++ sc->ant_tx = tx_ant;
++
++ if (ah->caps.rx_chainmask == 1)
++ return 0;
++
++ /* AR9100 runs into calibration issues if not all rx chains are enabled */
++ if (AR_SREV_9100(ah))
++ ah->rxchainmask = 0x7;
++ else
++ ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant);
++
++ ah->txchainmask = fill_chainmask(ah->caps.tx_chainmask, tx_ant);
++ ath9k_reload_chainmask_settings(sc);
++
++ return 0;
++}
++
++static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
++{
++ struct ath_softc *sc = hw->priv;
++
++ *tx_ant = sc->ant_tx;
++ *rx_ant = sc->ant_rx;
++ return 0;
++}
++
+ struct ieee80211_ops ath9k_ops = {
+ .tx = ath9k_tx,
+ .start = ath9k_start,
+@@ -2386,4 +2455,6 @@ struct ieee80211_ops ath9k_ops = {
+ .tx_frames_pending = ath9k_tx_frames_pending,
+ .tx_last_beacon = ath9k_tx_last_beacon,
+ .get_stats = ath9k_get_stats,
++ .set_antenna = ath9k_set_antenna,
++ .get_antenna = ath9k_get_antenna,
+ };
+--- a/drivers/net/wireless/ath/ath9k/recv.c
++++ b/drivers/net/wireless/ath/ath9k/recv.c
+@@ -1956,7 +1956,7 @@ int ath_rx_tasklet(struct ath_softc *sc,
+ ath_rx_ps(sc, skb);
+ spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
+
+- if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
++ if ((ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) && sc->ant_rx == 3)
+ ath_ant_comb_scan(sc, &rs);
+
+ ieee80211_rx(hw, skb);
projects / openwrt.git / blobdiff