package/kernel/mac80211/patches/543-ath9k-allow-to-disable-bands-via-platform-data.patch

   1 --- a/include/linux/ath9k_platform.h
   2 +++ b/include/linux/ath9k_platform.h
   3 @@ -34,6 +34,8 @@ struct ath9k_platform_data {
   4         bool endian_check;
   5         bool is_clk_25mhz;
   6         bool tx_gain_buffalo;
   7 +       bool disable_2ghz;
   8 +       bool disable_5ghz;
   9
  10         int (*get_mac_revision)(void);
  11         int (*external_reset)(void);
  12 --- a/drivers/net/wireless/ath/ath9k/hw.c
  13 +++ b/drivers/net/wireless/ath/ath9k/hw.c
  14 @@ -2323,17 +2323,25 @@ int ath9k_hw_fill_cap_info(struct ath_hw
  15         }
  16
  17         eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
  18 -       if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
  19 -               ath_err(common,
  20 -                       "no band has been marked as supported in EEPROM\n");
  21 -               return -EINVAL;
  22 +
  23 +       if (eeval & AR5416_OPFLAGS_11A) {
  24 +               if (ah->disable_5ghz)
  25 +                       ath_warn(common, "disabling 5GHz band\n");
  26 +               else
  27 +                       pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
  28         }
  29
  30 -       if (eeval & AR5416_OPFLAGS_11A)
  31 -               pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
  32 +       if (eeval & AR5416_OPFLAGS_11G) {
  33 +               if (ah->disable_2ghz)
  34 +                       ath_warn(common, "disabling 2GHz band\n");
  35 +               else
  36 +                       pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
  37 +       }
  38
  39 -       if (eeval & AR5416_OPFLAGS_11G)
  40 -               pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
  41 +       if ((pCap->hw_caps & (ATH9K_HW_CAP_2GHZ | ATH9K_HW_CAP_5GHZ)) == 0) {
  42 +               ath_err(common, "both bands are disabled\n");
  43 +               return -EINVAL;
  44 +       }
  45
  46         if (AR_SREV_9485(ah) ||
  47             AR_SREV_9285(ah) ||
  48 --- a/drivers/net/wireless/ath/ath9k/hw.h
  49 +++ b/drivers/net/wireless/ath/ath9k/hw.h
  50 @@ -932,6 +932,8 @@ struct ath_hw {
  51         bool is_clk_25mhz;
  52         int (*get_mac_revision)(void);
  53         int (*external_reset)(void);
  54 +       bool disable_2ghz;
  55 +       bool disable_5ghz;
  56
  57         const struct firmware *eeprom_blob;
  58  };
  59 --- a/drivers/net/wireless/ath/ath9k/init.c
  60 +++ b/drivers/net/wireless/ath/ath9k/init.c
  61 @@ -722,6 +722,8 @@ static int ath9k_init_softc(u16 devid, s
  62                 ah->is_clk_25mhz = pdata->is_clk_25mhz;
  63                 ah->get_mac_revision = pdata->get_mac_revision;
  64                 ah->external_reset = pdata->external_reset;
  65 +               ah->disable_2ghz = pdata->disable_2ghz;
  66 +               ah->disable_5ghz = pdata->disable_5ghz;
  67                 if (!pdata->endian_check)
  68                         ah->ah_flags |= AH_NO_EEP_SWAP;
  69         }