package/kernel/mac80211/patches/600-0020-rt2x00-rt2800lib-add-channel-configuration-code-for-.patch

   1 From 269f19c848a2380db03a3f207cafb88e28d71c53 Mon Sep 17 00:00:00 2001
   2 From: Gabor Juhos <juhosg@openwrt.org>
   3 Date: Sun, 24 Mar 2013 19:26:28 +0100
   4 Subject: [PATCH] rt2x00: rt2800lib: add channel configuration code for RT3883
   5
   6 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
   7 ---
   8  drivers/net/wireless/rt2x00/rt2800lib.c |   72 +++++++++++++++++++++++++++++--
   9  1 file changed, 69 insertions(+), 3 deletions(-)
  10
  11 --- a/drivers/net/wireless/rt2x00/rt2800lib.c
  12 +++ b/drivers/net/wireless/rt2x00/rt2800lib.c
  13 @@ -3429,6 +3429,36 @@ static char rt2800_txpower_to_dev(struct
  14                 return clamp_t(char, txpower, MIN_A_TXPOWER, MAX_A_TXPOWER);
  15  }
  16
  17 +static void rt3883_bbp_adjust(struct rt2x00_dev *rt2x00dev,
  18 +                             struct rf_channel *rf)
  19 +{
  20 +       u8 bbp;
  21 +
  22 +       bbp = (rf->channel > 14) ? 0x48 : 0x38;
  23 +       rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, bbp);
  24 +
  25 +       rt2800_bbp_write(rt2x00dev, 69, 0x12);
  26 +
  27 +       if (rf->channel <= 14) {
  28 +               rt2800_bbp_write(rt2x00dev, 70, 0x0a);
  29 +       } else {
  30 +               /* Disable CCK packet detection */
  31 +               rt2800_bbp_write(rt2x00dev, 70, 0x00);
  32 +       }
  33 +
  34 +       rt2800_bbp_write(rt2x00dev, 73, 0x10);
  35 +
  36 +       if (rf->channel > 14) {
  37 +               rt2800_bbp_write(rt2x00dev, 62, 0x1d);
  38 +               rt2800_bbp_write(rt2x00dev, 63, 0x1d);
  39 +               rt2800_bbp_write(rt2x00dev, 64, 0x1d);
  40 +       } else {
  41 +               rt2800_bbp_write(rt2x00dev, 62, 0x2d);
  42 +               rt2800_bbp_write(rt2x00dev, 63, 0x2d);
  43 +               rt2800_bbp_write(rt2x00dev, 64, 0x2d);
  44 +       }
  45 +}
  46 +
  47  static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
  48                                   struct ieee80211_conf *conf,
  49                                   struct rf_channel *rf,
  50 @@ -3447,6 +3477,12 @@ static void rt2800_config_channel(struct
  51                         rt2800_txpower_to_dev(rt2x00dev, rf->channel,
  52                                               info->default_power3);
  53
  54 +       switch (rt2x00dev->chip.rt) {
  55 +       case RT3883:
  56 +               rt3883_bbp_adjust(rt2x00dev, rf);
  57 +               break;
  58 +       }
  59 +
  60         switch (rt2x00dev->chip.rf) {
  61         case RF2020:
  62         case RF3020:
  63 @@ -3530,6 +3566,15 @@ static void rt2800_config_channel(struct
  64                 rt2800_bbp_write(rt2x00dev, 63, 0x37 - rt2x00dev->lna_gain);
  65                 rt2800_bbp_write(rt2x00dev, 64, 0x37 - rt2x00dev->lna_gain);
  66                 rt2800_bbp_write(rt2x00dev, 77, 0x98);
  67 +       } else if (rt2x00_rt(rt2x00dev, RT3883)) {
  68 +               rt2800_bbp_write(rt2x00dev, 62, 0x37 - rt2x00dev->lna_gain);
  69 +               rt2800_bbp_write(rt2x00dev, 63, 0x37 - rt2x00dev->lna_gain);
  70 +               rt2800_bbp_write(rt2x00dev, 64, 0x37 - rt2x00dev->lna_gain);
  71 +
  72 +               if (rt2x00dev->default_ant.rx_chain_num > 1)
  73 +                       rt2800_bbp_write(rt2x00dev, 86, 0x46);
  74 +               else
  75 +                       rt2800_bbp_write(rt2x00dev, 86, 0);
  76         } else {
  77                 rt2800_bbp_write(rt2x00dev, 62, 0x37 - rt2x00dev->lna_gain);
  78                 rt2800_bbp_write(rt2x00dev, 63, 0x37 - rt2x00dev->lna_gain);
  79 @@ -3542,6 +3587,7 @@ static void rt2800_config_channel(struct
  80                     !rt2x00_rt(rt2x00dev, RT5392)) {
  81                         if (rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
  82                                 rt2800_bbp_write(rt2x00dev, 82, 0x62);
  83 +                               rt2800_bbp_write(rt2x00dev, 82, 0x62);
  84                                 rt2800_bbp_write(rt2x00dev, 75, 0x46);
  85                         } else {
  86                                 if (rt2x00_rt(rt2x00dev, RT3593))
  87 @@ -3550,19 +3596,22 @@ static void rt2800_config_channel(struct
  88                                         rt2800_bbp_write(rt2x00dev, 82, 0x84);
  89                                 rt2800_bbp_write(rt2x00dev, 75, 0x50);
  90                         }
  91 -                       if (rt2x00_rt(rt2x00dev, RT3593))
  92 +                       if (rt2x00_rt(rt2x00dev, RT3593) ||
  93 +                           rt2x00_rt(rt2x00dev, RT3883))
  94                                 rt2800_bbp_write(rt2x00dev, 83, 0x8a);
  95                 }
  96
  97         } else {
  98                 if (rt2x00_rt(rt2x00dev, RT3572))
  99                         rt2800_bbp_write(rt2x00dev, 82, 0x94);
 100 -               else if (rt2x00_rt(rt2x00dev, RT3593))
 101 +               else if (rt2x00_rt(rt2x00dev, RT3593) ||
 102 +                        rt2x00_rt(rt2x00dev, RT3883))
 103                         rt2800_bbp_write(rt2x00dev, 82, 0x82);
 104                 else
 105                         rt2800_bbp_write(rt2x00dev, 82, 0xf2);
 106
 107 -               if (rt2x00_rt(rt2x00dev, RT3593))
 108 +               if (rt2x00_rt(rt2x00dev, RT3593) ||
 109 +                   rt2x00_rt(rt2x00dev, RT3883))
 110                         rt2800_bbp_write(rt2x00dev, 83, 0x9a);
 111
 112                 if (rt2x00_has_cap_external_lna_a(rt2x00dev))
 113 @@ -3684,6 +3733,23 @@ static void rt2800_config_channel(struct
 114
 115                 rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, reg);
 116
 117 +               usleep_range(1000, 1500);
 118 +       }
 119 +
 120 +       if (rt2x00_rt(rt2x00dev, RT3883)) {
 121 +               if (!conf_is_ht40(conf))
 122 +                       rt2800_bbp_write(rt2x00dev, 105, 0x34);
 123 +               else
 124 +                       rt2800_bbp_write(rt2x00dev, 105, 0x04);
 125 +
 126 +               /* AGC init */
 127 +               if (rf->channel <= 14)
 128 +                       reg = 0x2e + rt2x00dev->lna_gain;
 129 +               else
 130 +                       reg = 0x20 + ((rt2x00dev->lna_gain * 5) / 3);
 131 +
 132 +               rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, reg);
 133 +
 134                 usleep_range(1000, 1500);
 135         }
 136