ath9k_hw: Remove BTCOEX initvals

The MAX_TXPWR table for BTCOEX is not needed for AR9462.
Programming these values to the HW results in undesirable
behavior - for example, large number of delimiter/data
underruns are seen in AES-CCMP mode. Also, registers like
AR_PCU_MISC_MODE2 return 0xdeadbeef after the BTCOEX_MAX
power table is programmed to the HW, and frames being transmitted
end up being looped back to the RX engine, an example being beacon
frames in IBSS mode.

Remove this table for now - this fixes CCMP performance and general
IBSS usage.

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

3 files changed, 0 insertions, 20 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_hw.c b/drivers/net/wireless/ath/ath9k/ar9003_hw.c
index 0f56e322dd3b..a0e3394b10dc 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_hw.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_hw.c
@@ -305,11 +305,6 @@ static void ar9003_hw_init_mode_regs(struct ath_hw *ah)
                                 ar9462_common_rx_gain_table_2p0,
                                 ARRAY_SIZE(ar9462_common_rx_gain_table_2p0), 2);
 
-                INIT_INI_ARRAY(&ah->ini_BTCOEX_MAX_TXPWR,
-                                ar9462_2p0_BTCOEX_MAX_TXPWR_table,
-                                ARRAY_SIZE(ar9462_2p0_BTCOEX_MAX_TXPWR_table),
-                                2);
-
                 /* Awake -> Sleep Setting */
                 INIT_INI_ARRAY(&ah->iniPcieSerdes,
                                 PCIE_PLL_ON_CREQ_DIS_L1_2P0,
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index 04d12252731c..4c9bc9f14f79 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -683,9 +683,6 @@ static int ar9003_hw_process_ini(struct ath_hw *ah,
 
         REG_WRITE_ARRAY(&ah->iniAdditional, 1, regWrites);
 
-        if (AR_SREV_9462(ah))
-                ar9003_hw_prog_ini(ah, &ah->ini_BTCOEX_MAX_TXPWR, 1);
-
         if (chan->channel == 2484)
                 ar9003_hw_prog_ini(ah, &ah->ini_japan2484, 1);
 
diff --git a/drivers/net/wireless/ath/ath9k/ar9462_2p0_initvals.h b/drivers/net/wireless/ath/ath9k/ar9462_2p0_initvals.h
index b6ba1e8149be..b39870ce3f2e 100644
--- a/drivers/net/wireless/ath/ath9k/ar9462_2p0_initvals.h
+++ b/drivers/net/wireless/ath/ath9k/ar9462_2p0_initvals.h
@@ -1448,16 +1448,4 @@ static const u32 ar9462_common_mixed_rx_gain_table_2p0[][2] = {
         {0x0000b1fc, 0x00000196},
 };
 
-static const u32 ar9462_2p0_BTCOEX_MAX_TXPWR_table[][2] = {
-        /* Addr      allmodes  */
-        {0x000018c0, 0x10101010},
-        {0x000018c4, 0x10101010},
-        {0x000018c8, 0x10101010},
-        {0x000018cc, 0x10101010},
-        {0x000018d0, 0x10101010},
-        {0x000018d4, 0x10101010},
-        {0x000018d8, 0x10101010},
-        {0x000018dc, 0x10101010},
-};
-
 #endif /* INITVALS_9462_2P0_H */