package/mac80211/patches/582-ath9k_antenna_control.patch

   1 --- a/drivers/net/wireless/ath/ath9k/init.c
   2 +++ b/drivers/net/wireless/ath/ath9k/init.c
   3 @@ -652,9 +652,22 @@ static void ath9k_init_txpower_limits(st
   4         ah->curchan = curchan;
   5  }
   6
   7 +void ath9k_reload_chainmask_settings(struct ath_softc *sc)
   8 +{
   9 +       if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT))
  10 +               return;
  11 +
  12 +       if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
  13 +               setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
  14 +       if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
  15 +               setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
  16 +}
  17 +
  18 +
  19  void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
  20  {
  21 -       struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  22 +       struct ath_hw *ah = sc->sc_ah;
  23 +       struct ath_common *common = ath9k_hw_common(ah);
  24
  25         hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
  26                 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
  27 @@ -692,6 +705,16 @@ void ath9k_set_hw_capab(struct ath_softc
  28         hw->sta_data_size = sizeof(struct ath_node);
  29         hw->vif_data_size = sizeof(struct ath_vif);
  30
  31 +       hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1;
  32 +       hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1;
  33 +
  34 +       /* single chain devices with rx diversity */
  35 +       if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
  36 +               hw->wiphy->available_antennas_rx = BIT(0) | BIT(1);
  37 +
  38 +       sc->ant_rx = hw->wiphy->available_antennas_rx;
  39 +       sc->ant_tx = hw->wiphy->available_antennas_tx;
  40 +
  41  #ifdef CONFIG_ATH9K_RATE_CONTROL
  42         hw->rate_control_algorithm = "ath9k_rate_control";
  43  #endif
  44 @@ -703,12 +726,7 @@ void ath9k_set_hw_capab(struct ath_softc
  45                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
  46                         &sc->sbands[IEEE80211_BAND_5GHZ];
  47
  48 -       if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
  49 -               if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
  50 -                       setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
  51 -               if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
  52 -                       setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
  53 -       }
  54 +       ath9k_reload_chainmask_settings(sc);
  55
  56         SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
  57  }
  58 --- a/drivers/net/wireless/ath/ath9k/ath9k.h
  59 +++ b/drivers/net/wireless/ath/ath9k/ath9k.h
  60 @@ -652,6 +652,7 @@ struct ath_softc {
  61         struct ath_descdma txsdma;
  62
  63         struct ath_ant_comb ant_comb;
  64 +       u8 ant_tx, ant_rx;
  65  };
  66
  67  void ath9k_tasklet(unsigned long data);
  68 @@ -673,6 +674,7 @@ int ath9k_init_device(u16 devid, struct
  69                     const struct ath_bus_ops *bus_ops);
  70  void ath9k_deinit_device(struct ath_softc *sc);
  71  void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw);
  72 +void ath9k_reload_chainmask_settings(struct ath_softc *sc);
  73
  74  void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw);
  75  bool ath9k_uses_beacons(int type);
  76 --- a/drivers/net/wireless/ath/ath9k/main.c
  77 +++ b/drivers/net/wireless/ath/ath9k/main.c
  78 @@ -262,6 +262,22 @@ static bool ath_complete_reset(struct at
  79                         ath_start_ani(common);
  80         }
  81
  82 +       if (ath9k_hw_ops(ah)->antdiv_comb_conf_get && sc->ant_rx != 3) {
  83 +               struct ath_hw_antcomb_conf div_ant_conf;
  84 +               u8 lna_conf;
  85 +
  86 +               ath9k_hw_antdiv_comb_conf_get(ah, &div_ant_conf);
  87 +
  88 +               if (sc->ant_rx == 1)
  89 +                       lna_conf = ATH_ANT_DIV_COMB_LNA1;
  90 +               else
  91 +                       lna_conf = ATH_ANT_DIV_COMB_LNA2;
  92 +               div_ant_conf.main_lna_conf = lna_conf;
  93 +               div_ant_conf.alt_lna_conf = lna_conf;
  94 +
  95 +               ath9k_hw_antdiv_comb_conf_set(ah, &div_ant_conf);
  96 +       }
  97 +
  98         ieee80211_wake_queues(sc->hw);
  99
 100         return true;
 101 @@ -2360,6 +2376,59 @@ static int ath9k_get_stats(struct ieee80
 102         return 0;
 103  }
 104
 105 +static u32 fill_chainmask(u32 cap, u32 new)
 106 +{
 107 +       u32 filled = 0;
 108 +       int i;
 109 +
 110 +       for (i = 0; cap && new; i++, cap >>= 1) {
 111 +               if (!(cap & BIT(0)))
 112 +                       continue;
 113 +
 114 +               if (new & BIT(0))
 115 +                       filled |= BIT(i);
 116 +
 117 +               new >>= 1;
 118 +       }
 119 +
 120 +       return filled;
 121 +}
 122 +
 123 +static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
 124 +{
 125 +       struct ath_softc *sc = hw->priv;
 126 +       struct ath_hw *ah = sc->sc_ah;
 127 +
 128 +       if (!rx_ant || !tx_ant)
 129 +               return -EINVAL;
 130 +
 131 +       sc->ant_rx = rx_ant;
 132 +       sc->ant_tx = tx_ant;
 133 +
 134 +       if (ah->caps.rx_chainmask == 1)
 135 +               return 0;
 136 +
 137 +       /* AR9100 runs into calibration issues if not all rx chains are enabled */
 138 +       if (AR_SREV_9100(ah))
 139 +               ah->rxchainmask = 0x7;
 140 +       else
 141 +               ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant);
 142 +
 143 +       ah->txchainmask = fill_chainmask(ah->caps.tx_chainmask, tx_ant);
 144 +       ath9k_reload_chainmask_settings(sc);
 145 +
 146 +       return 0;
 147 +}
 148 +
 149 +static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
 150 +{
 151 +       struct ath_softc *sc = hw->priv;
 152 +
 153 +       *tx_ant = sc->ant_tx;
 154 +       *rx_ant = sc->ant_rx;
 155 +       return 0;
 156 +}
 157 +
 158  struct ieee80211_ops ath9k_ops = {
 159         .tx                 = ath9k_tx,
 160         .start              = ath9k_start,
 161 @@ -2386,4 +2455,6 @@ struct ieee80211_ops ath9k_ops = {
 162         .tx_frames_pending  = ath9k_tx_frames_pending,
 163         .tx_last_beacon     = ath9k_tx_last_beacon,
 164         .get_stats          = ath9k_get_stats,
 165 +       .set_antenna        = ath9k_set_antenna,
 166 +       .get_antenna        = ath9k_get_antenna,
 167  };
 168 --- a/drivers/net/wireless/ath/ath9k/recv.c
 169 +++ b/drivers/net/wireless/ath/ath9k/recv.c
 170 @@ -1956,7 +1956,7 @@ int ath_rx_tasklet(struct ath_softc *sc,
 171                         ath_rx_ps(sc, skb);
 172                 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
 173
 174 -               if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
 175 +               if ((ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) && sc->ant_rx == 3)
 176                         ath_ant_comb_scan(sc, &rs);
 177
 178                 ieee80211_rx(hw, skb);