package/mac80211/patches/570-ath9k-add-external_reset-callback-to-ath9k_platfom_d.patch

   1 diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
   2 index 323b6ab..5d373fc 100644
   3 --- a/drivers/net/wireless/ath/ath9k/hw.c
   4 +++ b/drivers/net/wireless/ath/ath9k/hw.c
   5 @@ -1161,6 +1161,41 @@ static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
   6                         rst_flags |= AR_RTC_RC_MAC_COLD;
   7         }
   8
   9 +       if (AR_SREV_9330(ah)) {
  10 +               int npend = 0;
  11 +               int i;
  12 +
  13 +               /* AR9330 WAR:
  14 +                * call external reset function to reset WMAC if:
  15 +                * - doing a cold reset
  16 +                * - we have pending frames in the TX queues
  17 +                */
  18 +
  19 +               for (i = 0; i < AR_NUM_QCU; i++) {
  20 +                       npend = ath9k_hw_numtxpending(ah, i);
  21 +                       if (npend)
  22 +                               break;
  23 +               }
  24 +
  25 +               if (ah->external_reset &&
  26 +                   (npend || type == ATH9K_RESET_COLD)) {
  27 +                       int reset_err = 0;
  28 +
  29 +                       ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET,
  30 +                               "reset MAC via external reset\n");
  31 +
  32 +                       reset_err = ah->external_reset();
  33 +                       if (reset_err) {
  34 +                               ath_err(ath9k_hw_common(ah),
  35 +                                       "External reset failed, err=%d\n",
  36 +                                       reset_err);
  37 +                               return false;
  38 +                       }
  39 +
  40 +                       REG_WRITE(ah, AR_RTC_RESET, 1);
  41 +               }
  42 +       }
  43 +
  44         REG_WRITE(ah, AR_RTC_RC, rst_flags);
  45
  46         REGWRITE_BUFFER_FLUSH(ah);
  47 diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
  48 index 8d9ac49..f29a806 100644
  49 --- a/drivers/net/wireless/ath/ath9k/hw.h
  50 +++ b/drivers/net/wireless/ath/ath9k/hw.h
  51 @@ -864,6 +864,7 @@ struct ath_hw {
  52
  53         bool is_clk_25mhz;
  54         int (*get_mac_revision)(void);
  55 +       int (*external_reset)(void);
  56  };
  57
  58  struct ath_bus_ops {
  59 diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
  60 index 5ffabb9..f517649 100644
  61 --- a/drivers/net/wireless/ath/ath9k/init.c
  62 +++ b/drivers/net/wireless/ath/ath9k/init.c
  63 @@ -576,6 +576,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
  64                 sc->sc_ah->led_pin = pdata->led_pin;
  65                 ah->is_clk_25mhz = pdata->is_clk_25mhz;
  66                 ah->get_mac_revision = pdata->get_mac_revision;
  67 +               ah->external_reset = pdata->external_reset;
  68         }
  69
  70         common = ath9k_hw_common(ah);
  71 diff --git a/include/linux/ath9k_platform.h b/include/linux/ath9k_platform.h
  72 index c207607..6e3f54f 100644
  73 --- a/include/linux/ath9k_platform.h
  74 +++ b/include/linux/ath9k_platform.h
  75 @@ -31,6 +31,7 @@ struct ath9k_platform_data {
  76
  77         bool is_clk_25mhz;
  78         int (*get_mac_revision)(void);
  79 +       int (*external_reset)(void);
  80  };
  81
  82  #endif /* _LINUX_ATH9K_PLATFORM_H */