ath9k_htc: Add support for bluetooth coexistence.

Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/btcoex.c b/drivers/net/wireless/ath/ath9k/btcoex.c
index fb4ac15f3b93..6a92e57fddf0 100644
--- a/drivers/net/wireless/ath/ath9k/btcoex.c
+++ b/drivers/net/wireless/ath/ath9k/btcoex.c
@@ -168,6 +168,7 @@ EXPORT_SYMBOL(ath9k_hw_btcoex_set_weight);
 static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah)
 {
         struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+        u32  val;
 
         /*
          * Program coex mode and weight registers to
@@ -177,6 +178,12 @@ static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah)
         REG_WRITE(ah, AR_BT_COEX_WEIGHT, btcoex_hw->bt_coex_weights);
         REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex_hw->bt_coex_mode2);
 
+        if (AR_SREV_9271(ah)) {
+                val = REG_READ(ah, 0x50040);
+                val &= 0xFFFFFEFF;
+                REG_WRITE(ah, 0x50040, val);
+        }
+
         REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
         REG_RMW_FIELD(ah, AR_PCU_MISC, AR_PCU_BT_ANT_PREVENT_RX, 0);