package/kernel/mac80211/patches/324-ath9k_hw-fix-spectral-scan-on-AR9285-and-newer.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Mon, 11 Jul 2016 10:34:37 +0200
   3 Subject: [PATCH] ath9k_hw: fix spectral scan on AR9285 and newer
   4
   5 The register layout of AR_PHY_SPECTRAL_SCAN has changed, only AR9280
   6 uses the old layout
   7
   8 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   9 ---
  10
  11 --- a/drivers/net/wireless/ath/ath9k/ar9002_phy.c
  12 +++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
  13 @@ -476,6 +476,7 @@ static void ar9002_hw_set_bt_ant_diversi
  14  static void ar9002_hw_spectral_scan_config(struct ath_hw *ah,
  15                                     struct ath_spec_scan *param)
  16  {
  17 +       u32 repeat_bit;
  18         u8 count;
  19
  20         if (!param->enabled) {
  21 @@ -486,12 +487,15 @@ static void ar9002_hw_spectral_scan_conf
  22         REG_SET_BIT(ah, AR_PHY_RADAR_0, AR_PHY_RADAR_0_FFT_ENA);
  23         REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN, AR_PHY_SPECTRAL_SCAN_ENABLE);
  24
  25 +       if (AR_SREV_9280(ah))
  26 +               repeat_bit = AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT;
  27 +       else
  28 +               repeat_bit = AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT_KIWI;
  29 +
  30         if (param->short_repeat)
  31 -               REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
  32 -                           AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT);
  33 +               REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN, repeat_bit);
  34         else
  35 -               REG_CLR_BIT(ah, AR_PHY_SPECTRAL_SCAN,
  36 -                           AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT);
  37 +               REG_CLR_BIT(ah, AR_PHY_SPECTRAL_SCAN, repeat_bit);
  38
  39         /* on AR92xx, the highest bit of count will make the the chip send
  40          * spectral samples endlessly. Check if this really was intended,
  41 @@ -499,15 +503,25 @@ static void ar9002_hw_spectral_scan_conf
  42          */
  43         count = param->count;
  44         if (param->endless) {
  45 -               if (AR_SREV_9271(ah))
  46 -                       count = 0;
  47 -               else
  48 +               if (AR_SREV_9280(ah))
  49                         count = 0x80;
  50 +               else
  51 +                       count = 0;
  52         } else if (count & 0x80)
  53                 count = 0x7f;
  54 +       else if (!count)
  55 +               count = 1;
  56 +
  57 +       if (AR_SREV_9280(ah)) {
  58 +               REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
  59 +                             AR_PHY_SPECTRAL_SCAN_COUNT, count);
  60 +       } else {
  61 +               REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
  62 +                             AR_PHY_SPECTRAL_SCAN_COUNT_KIWI, count);
  63 +               REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
  64 +                           AR_PHY_SPECTRAL_SCAN_PHYERR_MASK_SELECT);
  65 +       }
  66
  67 -       REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
  68 -                     AR_PHY_SPECTRAL_SCAN_COUNT, count);
  69         REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
  70                       AR_PHY_SPECTRAL_SCAN_PERIOD, param->period);
  71         REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
  72 --- a/drivers/net/wireless/ath/ath9k/ar9002_phy.h
  73 +++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.h
  74 @@ -177,8 +177,11 @@
  75  #define AR_PHY_SPECTRAL_SCAN_PERIOD_S          8
  76  #define AR_PHY_SPECTRAL_SCAN_COUNT             0x00FF0000  /* Number of reports, reg 68, bits 16-23*/
  77  #define AR_PHY_SPECTRAL_SCAN_COUNT_S           16
  78 +#define AR_PHY_SPECTRAL_SCAN_COUNT_KIWI                0x0FFF0000  /* Number of reports, reg 68, bits 16-27*/
  79 +#define AR_PHY_SPECTRAL_SCAN_COUNT_KIWI_S      16
  80  #define AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT      0x01000000  /* Short repeat, reg 68, bit 24*/
  81 -#define AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT_S    24  /* Short repeat, reg 68, bit 24*/
  82 +#define AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT_KIWI 0x10000000  /* Short repeat, reg 68, bit 28*/
  83 +#define AR_PHY_SPECTRAL_SCAN_PHYERR_MASK_SELECT        0x40000000
  84
  85  #define AR_PHY_RX_DELAY           0x9914
  86  #define AR_PHY_SEARCH_START_DELAY 0x9918