ath9k_hw: Fix async fifo for AR9287

Async fifo is now enabled only for versions 1.3 and above.
Enable it in the appropriate place, in the reset routine,
instead of process_ini().

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

5 files changed, 55 insertions, 44 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar5008_phy.c b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
index b2c17c98bb38..96018d53f48e 100644
--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
@@ -742,17 +742,6 @@ static int ar5008_hw_process_ini(struct ath_hw *ah,
                 return -EINVAL;
         }
 
-        if (AR_SREV_9287_12_OR_LATER(ah)) {
-                /* Enable ASYNC FIFO */
-                REG_SET_BIT(ah, AR_MAC_PCU_ASYNC_FIFO_REG3,
-                                AR_MAC_PCU_ASYNC_FIFO_REG3_DATAPATH_SEL);
-                REG_SET_BIT(ah, AR_PHY_MODE, AR_PHY_MODE_ASYNCFIFO);
-                REG_CLR_BIT(ah, AR_MAC_PCU_ASYNC_FIFO_REG3,
-                                AR_MAC_PCU_ASYNC_FIFO_REG3_SOFT_RESET);
-                REG_SET_BIT(ah, AR_MAC_PCU_ASYNC_FIFO_REG3,
-                                AR_MAC_PCU_ASYNC_FIFO_REG3_SOFT_RESET);
-        }
-
         /*
          * Set correct baseband to analog shift setting to
          * access analog chips.
diff --git a/drivers/net/wireless/ath/ath9k/ar9002_hw.c b/drivers/net/wireless/ath/ath9k/ar9002_hw.c
index 748449cd5872..7ba9dd68cc05 100644
--- a/drivers/net/wireless/ath/ath9k/ar9002_hw.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_hw.c
@@ -18,6 +18,7 @@
 #include "ar5008_initvals.h"
 #include "ar9001_initvals.h"
 #include "ar9002_initvals.h"
+#include "ar9002_phy.h"
 
 /* General hardware code for the A5008/AR9001/AR9002 hadware families */
 
@@ -565,18 +566,29 @@ int ar9002_hw_rf_claim(struct ath_hw *ah)
         return 0;
 }
 
+void ar9002_hw_enable_async_fifo(struct ath_hw *ah)
+{
+        if (AR_SREV_9287_13_OR_LATER(ah)) {
+                REG_SET_BIT(ah, AR_MAC_PCU_ASYNC_FIFO_REG3,
+                                AR_MAC_PCU_ASYNC_FIFO_REG3_DATAPATH_SEL);
+                REG_SET_BIT(ah, AR_PHY_MODE, AR_PHY_MODE_ASYNCFIFO);
+                REG_CLR_BIT(ah, AR_MAC_PCU_ASYNC_FIFO_REG3,
+                                AR_MAC_PCU_ASYNC_FIFO_REG3_SOFT_RESET);
+                REG_SET_BIT(ah, AR_MAC_PCU_ASYNC_FIFO_REG3,
+                                AR_MAC_PCU_ASYNC_FIFO_REG3_SOFT_RESET);
+        }
+}
+
 /*
- * Enable ASYNC FIFO
- *
  * 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_enable_async_fifo(struct ath_hw *ah)
+void ar9002_hw_update_async_fifo(struct ath_hw *ah)
 {
-        if (AR_SREV_9287_12_OR_LATER(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,
@@ -600,9 +612,9 @@ void ar9002_hw_enable_async_fifo(struct ath_hw *ah)
  */
 void ar9002_hw_enable_wep_aggregation(struct ath_hw *ah)
 {
-        if (AR_SREV_9287_12_OR_LATER(ah)) {
+        if (AR_SREV_9287_13_OR_LATER(ah)) {
                 REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
-                                AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
+                            AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
         }
 }
 
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index df277e467b87..b0e42b0374c2 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1298,6 +1298,9 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
         if (AR_SREV_9280_10_OR_LATER(ah))
                 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
 
+        if (!AR_SREV_9300_20_OR_LATER(ah))
+                ar9002_hw_enable_async_fifo(ah);
+
         r = ath9k_hw_process_ini(ah, chan);
         if (r)
                 return r;
@@ -1370,7 +1373,7 @@ 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_enable_async_fifo(ah);
+                ar9002_hw_update_async_fifo(ah);
                 ar9002_hw_enable_wep_aggregation(ah);
         }
 
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 116d1c80aa21..88bf2fca3736 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -911,6 +911,7 @@ 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);
 
 /*
diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index a7371a080491..3e3ccef438db 100644
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -760,32 +760,33 @@
 #define AR_SREV_REVISION2                     0x00000F00
 #define AR_SREV_REVISION2_S                   8
 
-#define AR_SREV_VERSION_5416_PCI               0xD
-#define AR_SREV_VERSION_5416_PCIE              0xC
-#define AR_SREV_REVISION_5416_10               0
-#define AR_SREV_REVISION_5416_20               1
-#define AR_SREV_REVISION_5416_22               2
-#define AR_SREV_VERSION_9100                  0x14
-#define AR_SREV_VERSION_9160                  0x40
-#define AR_SREV_REVISION_9160_10              0
-#define AR_SREV_REVISION_9160_11              1
-#define AR_SREV_VERSION_9280                0x80
-#define AR_SREV_REVISION_9280_10            0
-#define AR_SREV_REVISION_9280_20            1
-#define AR_SREV_REVISION_9280_21            2
-#define AR_SREV_VERSION_9285                  0xC0
-#define AR_SREV_REVISION_9285_10              0
-#define AR_SREV_REVISION_9285_11              1
-#define AR_SREV_REVISION_9285_12              2
-#define AR_SREV_VERSION_9287                  0x180
-#define AR_SREV_REVISION_9287_10              0
-#define AR_SREV_REVISION_9287_11              1
-#define AR_SREV_REVISION_9287_12              2
-#define AR_SREV_VERSION_9271                    0x140
-#define AR_SREV_REVISION_9271_10                0
-#define AR_SREV_REVISION_9271_11                1
-#define AR_SREV_VERSION_9300                  0x1c0
-#define AR_SREV_REVISION_9300_20              2 /* 2.0 and 2.1 */
+#define AR_SREV_VERSION_5416_PCI        0xD
+#define AR_SREV_VERSION_5416_PCIE       0xC
+#define AR_SREV_REVISION_5416_10        0
+#define AR_SREV_REVISION_5416_20        1
+#define AR_SREV_REVISION_5416_22        2
+#define AR_SREV_VERSION_9100            0x14
+#define AR_SREV_VERSION_9160            0x40
+#define AR_SREV_REVISION_9160_10        0
+#define AR_SREV_REVISION_9160_11        1
+#define AR_SREV_VERSION_9280            0x80
+#define AR_SREV_REVISION_9280_10        0
+#define AR_SREV_REVISION_9280_20        1
+#define AR_SREV_REVISION_9280_21        2
+#define AR_SREV_VERSION_9285            0xC0
+#define AR_SREV_REVISION_9285_10        0
+#define AR_SREV_REVISION_9285_11        1
+#define AR_SREV_REVISION_9285_12        2
+#define AR_SREV_VERSION_9287            0x180
+#define AR_SREV_REVISION_9287_10        0
+#define AR_SREV_REVISION_9287_11        1
+#define AR_SREV_REVISION_9287_12        2
+#define AR_SREV_REVISION_9287_13        3
+#define AR_SREV_VERSION_9271            0x140
+#define AR_SREV_REVISION_9271_10        0
+#define AR_SREV_REVISION_9271_11        1
+#define AR_SREV_VERSION_9300            0x1c0
+#define AR_SREV_REVISION_9300_20        2 /* 2.0 and 2.1 */
 
 #define AR_SREV_5416(_ah) \
         (((_ah)->hw_version.macVersion == AR_SREV_VERSION_5416_PCI) || \
@@ -863,6 +864,11 @@
         (((_ah)->hw_version.macVersion > AR_SREV_VERSION_9287) || \
          (((_ah)->hw_version.macVersion == AR_SREV_VERSION_9287) && \
           ((_ah)->hw_version.macRev >= AR_SREV_REVISION_9287_12)))
+#define AR_SREV_9287_13_OR_LATER(_ah) \
+        (((_ah)->hw_version.macVersion > AR_SREV_VERSION_9287) || \
+         (((_ah)->hw_version.macVersion == AR_SREV_VERSION_9287) && \
+          ((_ah)->hw_version.macRev >= AR_SREV_REVISION_9287_13)))
+
 #define AR_SREV_9271(_ah) \
     (((_ah))->hw_version.macVersion == AR_SREV_VERSION_9271)
 #define AR_SREV_9271_10(_ah) \