From: Miaoqing Pan <miaoqing@xxxxxxxxxxxxxx> If the ACK_CTS is enabled, MAC will send an ACK or CTS in response to a received frame, but it is a interfering packet for the BT(or other) in the PTA cycle, which will sufficient corrupt the received packets. Only disable it for SOC chips in PTA(slotted) mode. Signed-off-by: Miaoqing Pan <miaoqing@xxxxxxxxxxxxxx> --- drivers/net/wireless/ath/ath9k/btcoex.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/btcoex.c b/drivers/net/wireless/ath/ath9k/btcoex.c index 6d15dd3..7e24640 100644 --- a/drivers/net/wireless/ath/ath9k/btcoex.c +++ b/drivers/net/wireless/ath/ath9k/btcoex.c @@ -290,6 +290,7 @@ static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah) struct ath_btcoex_hw *btcoex = &ah->btcoex_hw; u32 val; int i; + int coex_mode = MS(btcoex->bt_coex_mode, AR_BT_MODE); /* * Program coex mode and weight registers to @@ -319,7 +320,11 @@ static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah) REG_WRITE(ah, 0x50040, val); } - REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1); + if (AR_SREV_SOC(ah) && (coex_mode == ATH_BT_COEX_MODE_SLOTTED)) + REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 0); + else + 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); ath9k_hw_gpio_request_out(ah, btcoex->wlanactive_gpio, -- 1.9.1
