diff mbox

[3/3] ath9k: disable ACK_CTS for SOC chips in PTA mode

Message ID 1479970402-13796-3-git-send-email-miaoqing@codeaurora.org (mailing list archive)
State Changes Requested
Delegated to: Kalle Valo
Headers show

Commit Message

Miaoqing Pan Nov. 24, 2016, 6:53 a.m. UTC 
From: Miaoqing Pan <miaoqing@codeaurora.org>

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@codeaurora.org>
---
 drivers/net/wireless/ath/ath9k/btcoex.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox

Patch

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,