git.openwrt.org Git - openwrt/staging/hauke.git/blob

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Sat, 14 May 2016 14:51:02 +0200
   3 Subject: [PATCH] Revert "ath9k: interpret requested txpower in EIRP
   4  domain"
   5
   6 This reverts commit 71f5137bf010c6faffab50c0ec15374c59c4a411.
   7 ---
   8
   9 --- a/drivers/net/wireless/ath/ath9k/hw.c
  10 +++ b/drivers/net/wireless/ath/ath9k/hw.c
  11 @@ -2976,7 +2976,8 @@ void ath9k_hw_apply_txpower(struct ath_h
  12  {
  13         struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
  14         struct ieee80211_channel *channel;
  15 -       int chan_pwr, new_pwr;
  16 +       int chan_pwr, new_pwr, max_gain;
  17 +       int ant_gain, ant_reduction = 0;
  18         u16 ctl = NO_CTL;
  19
  20         if (!chan)
  21 @@ -2988,9 +2989,14 @@ void ath9k_hw_apply_txpower(struct ath_h
  22         channel = chan->chan;
  23         chan_pwr = min_t(int, channel->max_power * 2, MAX_COMBINED_POWER);
  24         new_pwr = min_t(int, chan_pwr, reg->power_limit);
  25 +       max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
  26 +
  27 +       ant_gain = get_antenna_gain(ah, chan);
  28 +       if (ant_gain > max_gain)
  29 +               ant_reduction = ant_gain - max_gain;
  30
  31         ah->eep_ops->set_txpower(ah, chan, ctl,
  32 -                                get_antenna_gain(ah, chan), new_pwr, test);
  33 +                                ant_reduction, new_pwr, test);
  34  }
  35
  36  void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)