package/mac80211/patches/531-ath9k_nf_cleanup.patch

   1 --- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
   2 +++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
   3 @@ -1497,50 +1497,25 @@ static bool ar5008_hw_ani_control_new(st
   4  static void ar5008_hw_do_getnf(struct ath_hw *ah,
   5                               int16_t nfarray[NUM_NF_READINGS])
   6  {
   7 -       struct ath_common *common = ath9k_hw_common(ah);
   8         int16_t nf;
   9
  10         nf = MS(REG_READ(ah, AR_PHY_CCA), AR_PHY_MINCCA_PWR);
  11 -       if (nf & 0x100)
  12 -               nf = 0 - ((nf ^ 0x1ff) + 1);
  13 -       ath_print(common, ATH_DBG_CALIBRATE,
  14 -                 "NF calibrated [ctl] [chain 0] is %d\n", nf);
  15 -       nfarray[0] = nf;
  16 +       nfarray[0] = sign_extend(nf, 9);
  17
  18         nf = MS(REG_READ(ah, AR_PHY_CH1_CCA), AR_PHY_CH1_MINCCA_PWR);
  19 -       if (nf & 0x100)
  20 -               nf = 0 - ((nf ^ 0x1ff) + 1);
  21 -       ath_print(common, ATH_DBG_CALIBRATE,
  22 -                 "NF calibrated [ctl] [chain 1] is %d\n", nf);
  23 -       nfarray[1] = nf;
  24 +       nfarray[1] = sign_extend(nf, 9);
  25
  26         nf = MS(REG_READ(ah, AR_PHY_CH2_CCA), AR_PHY_CH2_MINCCA_PWR);
  27 -       if (nf & 0x100)
  28 -               nf = 0 - ((nf ^ 0x1ff) + 1);
  29 -       ath_print(common, ATH_DBG_CALIBRATE,
  30 -                 "NF calibrated [ctl] [chain 2] is %d\n", nf);
  31 -       nfarray[2] = nf;
  32 +       nfarray[2] = sign_extend(nf, 9);
  33
  34         nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR);
  35 -       if (nf & 0x100)
  36 -               nf = 0 - ((nf ^ 0x1ff) + 1);
  37 -       ath_print(common, ATH_DBG_CALIBRATE,
  38 -                 "NF calibrated [ext] [chain 0] is %d\n", nf);
  39 -       nfarray[3] = nf;
  40 +       nfarray[3] = sign_extend(nf, 9);
  41
  42         nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR_PHY_CH1_EXT_MINCCA_PWR);
  43 -       if (nf & 0x100)
  44 -               nf = 0 - ((nf ^ 0x1ff) + 1);
  45 -       ath_print(common, ATH_DBG_CALIBRATE,
  46 -                 "NF calibrated [ext] [chain 1] is %d\n", nf);
  47 -       nfarray[4] = nf;
  48 +       nfarray[4] = sign_extend(nf, 9);
  49
  50         nf = MS(REG_READ(ah, AR_PHY_CH2_EXT_CCA), AR_PHY_CH2_EXT_MINCCA_PWR);
  51 -       if (nf & 0x100)
  52 -               nf = 0 - ((nf ^ 0x1ff) + 1);
  53 -       ath_print(common, ATH_DBG_CALIBRATE,
  54 -                 "NF calibrated [ext] [chain 2] is %d\n", nf);
  55 -       nfarray[5] = nf;
  56 +       nfarray[5] = sign_extend(nf, 9);
  57  }
  58
  59  static void ar5008_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
  60 --- a/drivers/net/wireless/ath/ath9k/ar9002_phy.c
  61 +++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
  62 @@ -471,47 +471,22 @@ static u32 ar9002_hw_compute_pll_control
  63  static void ar9002_hw_do_getnf(struct ath_hw *ah,
  64                               int16_t nfarray[NUM_NF_READINGS])
  65  {
  66 -       struct ath_common *common = ath9k_hw_common(ah);
  67         int16_t nf;
  68
  69         nf = MS(REG_READ(ah, AR_PHY_CCA), AR9280_PHY_MINCCA_PWR);
  70 -
  71 -       if (nf & 0x100)
  72 -               nf = 0 - ((nf ^ 0x1ff) + 1);
  73 -       ath_print(common, ATH_DBG_CALIBRATE,
  74 -                 "NF calibrated [ctl] [chain 0] is %d\n", nf);
  75 -
  76 -       nfarray[0] = nf;
  77 -
  78 -       if (!AR_SREV_9285(ah) && !AR_SREV_9271(ah)) {
  79 -               nf = MS(REG_READ(ah, AR_PHY_CH1_CCA),
  80 -                               AR9280_PHY_CH1_MINCCA_PWR);
  81 -
  82 -               if (nf & 0x100)
  83 -                       nf = 0 - ((nf ^ 0x1ff) + 1);
  84 -               ath_print(common, ATH_DBG_CALIBRATE,
  85 -                         "NF calibrated [ctl] [chain 1] is %d\n", nf);
  86 -               nfarray[1] = nf;
  87 -       }
  88 +       nfarray[0] = sign_extend(nf, 9);
  89
  90         nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR9280_PHY_EXT_MINCCA_PWR);
  91 -       if (nf & 0x100)
  92 -               nf = 0 - ((nf ^ 0x1ff) + 1);
  93 -       ath_print(common, ATH_DBG_CALIBRATE,
  94 -                 "NF calibrated [ext] [chain 0] is %d\n", nf);
  95 -
  96 -       nfarray[3] = nf;
  97 -
  98 -       if (!AR_SREV_9285(ah) && !AR_SREV_9271(ah)) {
  99 -               nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA),
 100 -                               AR9280_PHY_CH1_EXT_MINCCA_PWR);
 101 -
 102 -               if (nf & 0x100)
 103 -                       nf = 0 - ((nf ^ 0x1ff) + 1);
 104 -               ath_print(common, ATH_DBG_CALIBRATE,
 105 -                         "NF calibrated [ext] [chain 1] is %d\n", nf);
 106 -               nfarray[4] = nf;
 107 -       }
 108 +       nfarray[3] = sign_extend(nf, 9);
 109 +
 110 +       if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
 111 +               return;
 112 +
 113 +       nf = MS(REG_READ(ah, AR_PHY_CH1_CCA), AR9280_PHY_CH1_MINCCA_PWR);
 114 +       nfarray[1] = sign_extend(nf, 9);
 115 +
 116 +       nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR9280_PHY_CH1_EXT_MINCCA_PWR);
 117 +       nfarray[4] = sign_extend(nf, 9);
 118  }
 119
 120  static void ar9002_hw_set_nf_limits(struct ath_hw *ah)
 121 --- a/drivers/net/wireless/ath/ath9k/calib.c
 122 +++ b/drivers/net/wireless/ath/ath9k/calib.c
 123 @@ -182,6 +182,10 @@ static void ath9k_hw_nf_sanitize(struct
 124                 if (!nf[i])
 125                         continue;
 126
 127 +               ath_print(common, ATH_DBG_CALIBRATE,
 128 +                         "NF calibrated [%s] [chain %d] is %d\n",
 129 +                         (i > 3 ? "ext" : "ctl"), i % 3, nf[i]);
 130 +
 131                 if (nf[i] > limit->max) {
 132                         ath_print(common, ATH_DBG_CALIBRATE,
 133                                   "NF[%d] (%d) > MAX (%d), correcting to MAX",
 134 --- a/drivers/net/wireless/ath/ath9k/hw.h
 135 +++ b/drivers/net/wireless/ath/ath9k/hw.h
 136 @@ -853,6 +853,12 @@ static inline struct ath_hw_ops *ath9k_h
 137         return &ah->ops;
 138  }
 139
 140 +static inline int sign_extend(int val, const int nbits)
 141 +{
 142 +       int order = BIT(nbits-1);
 143 +       return (val ^ order) - order;
 144 +}
 145 +
 146  /* Initialization, Detach, Reset */
 147  const char *ath9k_hw_probe(u16 vendorid, u16 devid);
 148  void ath9k_hw_deinit(struct ath_hw *ah);
 149 --- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
 150 +++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
 151 @@ -1018,50 +1018,25 @@ static bool ar9003_hw_ani_control(struct
 152  static void ar9003_hw_do_getnf(struct ath_hw *ah,
 153                               int16_t nfarray[NUM_NF_READINGS])
 154  {
 155 -       struct ath_common *common = ath9k_hw_common(ah);
 156         int16_t nf;
 157
 158         nf = MS(REG_READ(ah, AR_PHY_CCA_0), AR_PHY_MINCCA_PWR);
 159 -       if (nf & 0x100)
 160 -               nf = 0 - ((nf ^ 0x1ff) + 1);
 161 -       ath_print(common, ATH_DBG_CALIBRATE,
 162 -                 "NF calibrated [ctl] [chain 0] is %d\n", nf);
 163 -       nfarray[0] = nf;
 164 +       nfarray[0] = sign_extend(nf, 9);
 165
 166         nf = MS(REG_READ(ah, AR_PHY_CCA_1), AR_PHY_CH1_MINCCA_PWR);
 167 -       if (nf & 0x100)
 168 -               nf = 0 - ((nf ^ 0x1ff) + 1);
 169 -       ath_print(common, ATH_DBG_CALIBRATE,
 170 -                 "NF calibrated [ctl] [chain 1] is %d\n", nf);
 171 -       nfarray[1] = nf;
 172 +       nfarray[1] = sign_extend(nf, 9);
 173
 174         nf = MS(REG_READ(ah, AR_PHY_CCA_2), AR_PHY_CH2_MINCCA_PWR);
 175 -       if (nf & 0x100)
 176 -               nf = 0 - ((nf ^ 0x1ff) + 1);
 177 -       ath_print(common, ATH_DBG_CALIBRATE,
 178 -                 "NF calibrated [ctl] [chain 2] is %d\n", nf);
 179 -       nfarray[2] = nf;
 180 +       nfarray[2] = sign_extend(nf, 9);
 181
 182         nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR);
 183 -       if (nf & 0x100)
 184 -               nf = 0 - ((nf ^ 0x1ff) + 1);
 185 -       ath_print(common, ATH_DBG_CALIBRATE,
 186 -                 "NF calibrated [ext] [chain 0] is %d\n", nf);
 187 -       nfarray[3] = nf;
 188 +       nfarray[3] = sign_extend(nf, 9);
 189
 190         nf = MS(REG_READ(ah, AR_PHY_EXT_CCA_1), AR_PHY_CH1_EXT_MINCCA_PWR);
 191 -       if (nf & 0x100)
 192 -               nf = 0 - ((nf ^ 0x1ff) + 1);
 193 -       ath_print(common, ATH_DBG_CALIBRATE,
 194 -                 "NF calibrated [ext] [chain 1] is %d\n", nf);
 195 -       nfarray[4] = nf;
 196 +       nfarray[4] = sign_extend(nf, 9);
 197
 198         nf = MS(REG_READ(ah, AR_PHY_EXT_CCA_2), AR_PHY_CH2_EXT_MINCCA_PWR);
 199 -       if (nf & 0x100)
 200 -               nf = 0 - ((nf ^ 0x1ff) + 1);
 201 -       ath_print(common, ATH_DBG_CALIBRATE,
 202 -                 "NF calibrated [ext] [chain 2] is %d\n", nf);
 203 -       nfarray[5] = nf;
 204 +       nfarray[5] = sign_extend(nf, 9);
 205  }
 206
 207  static void ar9003_hw_set_nf_limits(struct ath_hw *ah)