package/kernel/mac80211/patches/522-ath9k_per_chain_signal_strength.patch

   1 --- a/drivers/net/wireless/ath/ath9k/mac.h
   2 +++ b/drivers/net/wireless/ath/ath9k/mac.h
   3 @@ -133,12 +133,8 @@ struct ath_rx_status {
   4         u8 rs_rate;
   5         u8 rs_antenna;
   6         u8 rs_more;
   7 -       int8_t rs_rssi_ctl0;
   8 -       int8_t rs_rssi_ctl1;
   9 -       int8_t rs_rssi_ctl2;
  10 -       int8_t rs_rssi_ext0;
  11 -       int8_t rs_rssi_ext1;
  12 -       int8_t rs_rssi_ext2;
  13 +       int8_t rs_rssi_ctl[3];
  14 +       int8_t rs_rssi_ext[3];
  15         u8 rs_isaggr;
  16         u8 rs_firstaggr;
  17         u8 rs_moreaggr;
  18 --- a/drivers/net/wireless/ath/ath9k/recv.c
  19 +++ b/drivers/net/wireless/ath/ath9k/recv.c
  20 @@ -906,6 +906,7 @@ static void ath9k_process_rssi(struct at
  21         struct ath_hw *ah = common->ah;
  22         int last_rssi;
  23         int rssi = rx_stats->rs_rssi;
  24 +       int i, j;
  25
  26         /*
  27          * RSSI is not available for subframes in an A-MPDU.
  28 @@ -924,6 +925,20 @@ static void ath9k_process_rssi(struct at
  29                 return;
  30         }
  31
  32 +       for (i = 0, j = 0; i < ARRAY_SIZE(rx_stats->rs_rssi_ctl); i++) {
  33 +               s8 rssi;
  34 +
  35 +               if (!(ah->rxchainmask & BIT(i)))
  36 +                       continue;
  37 +
  38 +               rssi = rx_stats->rs_rssi_ctl[i];
  39 +               if (rssi != ATH9K_RSSI_BAD) {
  40 +                   rxs->chains |= BIT(j);
  41 +                   rxs->chain_signal[j] = ah->noise + rssi;
  42 +               }
  43 +               j++;
  44 +       }
  45 +
  46         /*
  47          * Update Beacon RSSI, this is used by ANI.
  48          */
  49 @@ -1073,14 +1088,14 @@ static int ath_process_fft(struct ath_so
  50                 fft_sample_40.channel_type = chan_type;
  51
  52                 if (chan_type == NL80211_CHAN_HT40PLUS) {
  53 -                       lower_rssi = fix_rssi_inv_only(rs->rs_rssi_ctl0);
  54 -                       upper_rssi = fix_rssi_inv_only(rs->rs_rssi_ext0);
  55 +                       lower_rssi = fix_rssi_inv_only(rs->rs_rssi_ctl[0]);
  56 +                       upper_rssi = fix_rssi_inv_only(rs->rs_rssi_ext[0]);
  57
  58                         fft_sample_40.lower_noise = ah->noise;
  59                         fft_sample_40.upper_noise = ext_nf;
  60                 } else {
  61 -                       lower_rssi = fix_rssi_inv_only(rs->rs_rssi_ext0);
  62 -                       upper_rssi = fix_rssi_inv_only(rs->rs_rssi_ctl0);
  63 +                       lower_rssi = fix_rssi_inv_only(rs->rs_rssi_ext[0]);
  64 +                       upper_rssi = fix_rssi_inv_only(rs->rs_rssi_ctl[0]);
  65
  66                         fft_sample_40.lower_noise = ext_nf;
  67                         fft_sample_40.upper_noise = ah->noise;
  68 @@ -1116,7 +1131,7 @@ static int ath_process_fft(struct ath_so
  69                 fft_sample_20.tlv.length = __cpu_to_be16(length);
  70                 fft_sample_20.freq = __cpu_to_be16(freq);
  71
  72 -               fft_sample_20.rssi = fix_rssi_inv_only(rs->rs_rssi_ctl0);
  73 +               fft_sample_20.rssi = fix_rssi_inv_only(rs->rs_rssi_ctl[0]);
  74                 fft_sample_20.noise = ah->noise;
  75
  76                 mag_info = ((struct ath_ht20_mag_info *)radar_info) - 1;
  77 --- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
  78 +++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
  79 @@ -476,12 +476,12 @@ int ath9k_hw_process_rxdesc_edma(struct
  80
  81         /* XXX: Keycache */
  82         rxs->rs_rssi = MS(rxsp->status5, AR_RxRSSICombined);
  83 -       rxs->rs_rssi_ctl0 = MS(rxsp->status1, AR_RxRSSIAnt00);
  84 -       rxs->rs_rssi_ctl1 = MS(rxsp->status1, AR_RxRSSIAnt01);
  85 -       rxs->rs_rssi_ctl2 = MS(rxsp->status1, AR_RxRSSIAnt02);
  86 -       rxs->rs_rssi_ext0 = MS(rxsp->status5, AR_RxRSSIAnt10);
  87 -       rxs->rs_rssi_ext1 = MS(rxsp->status5, AR_RxRSSIAnt11);
  88 -       rxs->rs_rssi_ext2 = MS(rxsp->status5, AR_RxRSSIAnt12);
  89 +       rxs->rs_rssi_ctl[0] = MS(rxsp->status1, AR_RxRSSIAnt00);
  90 +       rxs->rs_rssi_ctl[1] = MS(rxsp->status1, AR_RxRSSIAnt01);
  91 +       rxs->rs_rssi_ctl[2] = MS(rxsp->status1, AR_RxRSSIAnt02);
  92 +       rxs->rs_rssi_ext[0] = MS(rxsp->status5, AR_RxRSSIAnt10);
  93 +       rxs->rs_rssi_ext[1] = MS(rxsp->status5, AR_RxRSSIAnt11);
  94 +       rxs->rs_rssi_ext[2] = MS(rxsp->status5, AR_RxRSSIAnt12);
  95
  96         if (rxsp->status11 & AR_RxKeyIdxValid)
  97                 rxs->rs_keyix = MS(rxsp->status11, AR_KeyIdx);
  98 --- a/drivers/net/wireless/ath/ath9k/mac.c
  99 +++ b/drivers/net/wireless/ath/ath9k/mac.c
 100 @@ -550,25 +550,25 @@ int ath9k_hw_rxprocdesc(struct ath_hw *a
 101
 102         if (ads.ds_rxstatus8 & AR_PostDelimCRCErr) {
 103                 rs->rs_rssi = ATH9K_RSSI_BAD;
 104 -               rs->rs_rssi_ctl0 = ATH9K_RSSI_BAD;
 105 -               rs->rs_rssi_ctl1 = ATH9K_RSSI_BAD;
 106 -               rs->rs_rssi_ctl2 = ATH9K_RSSI_BAD;
 107 -               rs->rs_rssi_ext0 = ATH9K_RSSI_BAD;
 108 -               rs->rs_rssi_ext1 = ATH9K_RSSI_BAD;
 109 -               rs->rs_rssi_ext2 = ATH9K_RSSI_BAD;
 110 +               rs->rs_rssi_ctl[0] = ATH9K_RSSI_BAD;
 111 +               rs->rs_rssi_ctl[1] = ATH9K_RSSI_BAD;
 112 +               rs->rs_rssi_ctl[2] = ATH9K_RSSI_BAD;
 113 +               rs->rs_rssi_ext[0] = ATH9K_RSSI_BAD;
 114 +               rs->rs_rssi_ext[1] = ATH9K_RSSI_BAD;
 115 +               rs->rs_rssi_ext[2] = ATH9K_RSSI_BAD;
 116         } else {
 117                 rs->rs_rssi = MS(ads.ds_rxstatus4, AR_RxRSSICombined);
 118 -               rs->rs_rssi_ctl0 = MS(ads.ds_rxstatus0,
 119 +               rs->rs_rssi_ctl[0] = MS(ads.ds_rxstatus0,
 120                                                 AR_RxRSSIAnt00);
 121 -               rs->rs_rssi_ctl1 = MS(ads.ds_rxstatus0,
 122 +               rs->rs_rssi_ctl[1] = MS(ads.ds_rxstatus0,
 123                                                 AR_RxRSSIAnt01);
 124 -               rs->rs_rssi_ctl2 = MS(ads.ds_rxstatus0,
 125 +               rs->rs_rssi_ctl[2] = MS(ads.ds_rxstatus0,
 126                                                 AR_RxRSSIAnt02);
 127 -               rs->rs_rssi_ext0 = MS(ads.ds_rxstatus4,
 128 +               rs->rs_rssi_ext[0] = MS(ads.ds_rxstatus4,
 129                                                 AR_RxRSSIAnt10);
 130 -               rs->rs_rssi_ext1 = MS(ads.ds_rxstatus4,
 131 +               rs->rs_rssi_ext[1] = MS(ads.ds_rxstatus4,
 132                                                 AR_RxRSSIAnt11);
 133 -               rs->rs_rssi_ext2 = MS(ads.ds_rxstatus4,
 134 +               rs->rs_rssi_ext[2] = MS(ads.ds_rxstatus4,
 135                                                 AR_RxRSSIAnt12);
 136         }
 137         if (ads.ds_rxstatus8 & AR_RxKeyIdxValid)
 138 --- a/drivers/net/wireless/ath/ath9k/dfs.c
 139 +++ b/drivers/net/wireless/ath/ath9k/dfs.c
 140 @@ -158,8 +158,8 @@ void ath9k_dfs_process_phyerr(struct ath
 141                 return;
 142         }
 143
 144 -       ard.rssi = rs->rs_rssi_ctl0;
 145 -       ard.ext_rssi = rs->rs_rssi_ext0;
 146 +       ard.rssi = rs->rs_rssi_ctl[0];
 147 +       ard.ext_rssi = rs->rs_rssi_ext[0];
 148
 149         /*
 150          * hardware stores this as 8 bit signed value.
 151 --- a/drivers/net/wireless/ath/ath9k/antenna.c
 152 +++ b/drivers/net/wireless/ath/ath9k/antenna.c
 153 @@ -724,14 +724,14 @@ void ath_ant_comb_scan(struct ath_softc
 154         struct ath_ant_comb *antcomb = &sc->ant_comb;
 155         int alt_ratio = 0, alt_rssi_avg = 0, main_rssi_avg = 0, curr_alt_set;
 156         int curr_main_set;
 157 -       int main_rssi = rs->rs_rssi_ctl0;
 158 -       int alt_rssi = rs->rs_rssi_ctl1;
 159 +       int main_rssi = rs->rs_rssi_ctl[0];
 160 +       int alt_rssi = rs->rs_rssi_ctl[1];
 161         int rx_ant_conf,  main_ant_conf;
 162         bool short_scan = false, ret;
 163
 164 -       rx_ant_conf = (rs->rs_rssi_ctl2 >> ATH_ANT_RX_CURRENT_SHIFT) &
 165 +       rx_ant_conf = (rs->rs_rssi_ctl[2] >> ATH_ANT_RX_CURRENT_SHIFT) &
 166                        ATH_ANT_RX_MASK;
 167 -       main_ant_conf = (rs->rs_rssi_ctl2 >> ATH_ANT_RX_MAIN_SHIFT) &
 168 +       main_ant_conf = (rs->rs_rssi_ctl[2] >> ATH_ANT_RX_MAIN_SHIFT) &
 169                          ATH_ANT_RX_MASK;
 170
 171         if (alt_rssi >= antcomb->low_rssi_thresh) {