ath9k_hw: remove ar9287 v1.3+ specific hardcoded register hacks

Now that the clock rate is initialized properly and SIFS, EIFS, USEC,
slot time and ACK timeout are properly calculated by the generic code,
the 'async FIFO' register hacks are no longer necessary.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/ar9002_hw.c

@@ -499,45 +499,6 @@ void ar9002_hw_enable_async_fifo(struct ath_hw *ah)
 	}
 }
 
-/*
- * If Async FIFO is enabled, the following counters change as MAC now runs
- * at 117 Mhz instead of 88/44MHz when async FIFO is disabled.
- *
- * The values below tested for ht40 2 chain.
- * Overwrite the delay/timeouts initialized in process ini.
- */
-void ar9002_hw_update_async_fifo(struct ath_hw *ah)
-{
-	if (AR_SREV_9287_13_OR_LATER(ah)) {
-		REG_WRITE(ah, AR_D_GBL_IFS_SIFS,
-			  AR_D_GBL_IFS_SIFS_ASYNC_FIFO_DUR);
-		REG_WRITE(ah, AR_D_GBL_IFS_SLOT,
-			  AR_D_GBL_IFS_SLOT_ASYNC_FIFO_DUR);
-		REG_WRITE(ah, AR_D_GBL_IFS_EIFS,
-			  AR_D_GBL_IFS_EIFS_ASYNC_FIFO_DUR);
-
-		REG_WRITE(ah, AR_TIME_OUT, AR_TIME_OUT_ACK_CTS_ASYNC_FIFO_DUR);
-		REG_WRITE(ah, AR_USEC, AR_USEC_ASYNC_FIFO_DUR);
-
-		REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
-			    AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
-		REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
-			      AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
-	}
-}
-
-/*
- * We don't enable WEP aggregation on mac80211 but we keep this
- * around for HAL unification purposes.
- */
-void ar9002_hw_enable_wep_aggregation(struct ath_hw *ah)
-{
-	if (AR_SREV_9287_13_OR_LATER(ah)) {
-		REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
-			    AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
-	}
-}
-
 /* Sets up the AR5008/AR9001/AR9002 hardware familiy callbacks */
 void ar9002_hw_attach_ops(struct ath_hw *ah)
 {

drivers/net/wireless/ath/ath9k/hw.c

@@ -1631,9 +1631,13 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 
 	ath9k_hw_init_global_settings(ah);
 
-	if (!AR_SREV_9300_20_OR_LATER(ah)) {
-		ar9002_hw_update_async_fifo(ah);
-		ar9002_hw_enable_wep_aggregation(ah);
+	if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
+		REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
+			    AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
+		REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
+			      AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
+		REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
+			    AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
 	}
 
 	REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);

drivers/net/wireless/ath/ath9k/hw.h

@@ -985,8 +985,6 @@ void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
 void ar9002_hw_cck_chan14_spread(struct ath_hw *ah);
 int ar9002_hw_rf_claim(struct ath_hw *ah);
 void ar9002_hw_enable_async_fifo(struct ath_hw *ah);
-void ar9002_hw_update_async_fifo(struct ath_hw *ah);
-void ar9002_hw_enable_wep_aggregation(struct ath_hw *ah);
 
 /*
  * Code specific to AR9003, we stuff these here to avoid callbacks

drivers/net/wireless/ath/ath9k/reg.h

@@ -600,7 +600,6 @@
 
 #define AR_D_GBL_IFS_SIFS         0x1030
 #define AR_D_GBL_IFS_SIFS_M       0x0000FFFF
-#define AR_D_GBL_IFS_SIFS_ASYNC_FIFO_DUR 0x000003AB
 #define AR_D_GBL_IFS_SIFS_RESV0   0xFFFFFFFF
 
 #define AR_D_TXBLK_BASE            0x1038
@@ -616,12 +615,10 @@
 #define AR_D_GBL_IFS_SLOT         0x1070
 #define AR_D_GBL_IFS_SLOT_M       0x0000FFFF
 #define AR_D_GBL_IFS_SLOT_RESV0   0xFFFF0000
-#define AR_D_GBL_IFS_SLOT_ASYNC_FIFO_DUR   0x00000420
 
 #define AR_D_GBL_IFS_EIFS         0x10b0
 #define AR_D_GBL_IFS_EIFS_M       0x0000FFFF
 #define AR_D_GBL_IFS_EIFS_RESV0   0xFFFF0000
-#define AR_D_GBL_IFS_EIFS_ASYNC_FIFO_DUR   0x0000A5EB
 
 #define AR_D_GBL_IFS_MISC        0x10f0
 #define AR_D_GBL_IFS_MISC_LFSR_SLICE_SEL        0x00000007
@@ -1477,7 +1474,6 @@ enum {
 #define AR_TIME_OUT_ACK_S    0
 #define AR_TIME_OUT_CTS      0x3FFF0000
 #define AR_TIME_OUT_CTS_S    16
-#define AR_TIME_OUT_ACK_CTS_ASYNC_FIFO_DUR    0x16001D56
 
 #define AR_RSSI_THR          0x8018
 #define AR_RSSI_THR_MASK     0x000000FF
@@ -1493,7 +1489,6 @@ enum {
 #define AR_USEC_TX_LAT_S     14
 #define AR_USEC_RX_LAT       0x1F800000
 #define AR_USEC_RX_LAT_S     23
-#define AR_USEC_ASYNC_FIFO_DUR    0x12e00074
 
 #define AR_RESET_TSF        0x8020
 #define AR_RESET_TSF_ONCE   0x01000000