From e75d4ed6a9565fcccd579316b0fd933d2191f513 Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Thu, 25 Oct 2012 17:16:52 +0530 Subject: [PATCH] ath9k_hw: Fix concurrent tx on lower tx power Whenever WLAN receives scheduling msg from BT, it reduces tx power based on RSSI level. And then BT starts simultaneous transmission along with WLAN. Sometimes HW MAC compares tx power that is used prior to power reduction which is causing BT transmission to defer. Signed-off-by: Rajkumar Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_mci.c | 5 ++++- drivers/net/wireless/ath/ath9k/reg.h | 2 ++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.c b/drivers/net/wireless/ath/ath9k/ar9003_mci.c index b04fa4622822..42b4412d6794 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c @@ -881,9 +881,12 @@ int ar9003_mci_reset(struct ath_hw *ah, bool en_int, bool is_2g, REG_RMW_FIELD(ah, AR_BTCOEX_CTRL3, AR_BTCOEX_CTRL3_CONT_INFO_TIMEOUT, 20); - REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_RX_DEWEIGHT, 1); + REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_RX_DEWEIGHT, 0); REG_RMW_FIELD(ah, AR_PCU_MISC, AR_PCU_BT_ANT_PREVENT_RX, 0); + /* Set the time out to 3.125ms (5 BT slots) */ + REG_RMW_FIELD(ah, AR_BTCOEX_WL_LNA, AR_BTCOEX_WL_LNA_TIMEOUT, 0x3D090); + /* concurrent tx priority */ if (mci->config & ATH_MCI_CONFIG_CONCUR_TX) { REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h index e9dec138b913..ad3c82c09177 100644 --- a/drivers/net/wireless/ath/ath9k/reg.h +++ b/drivers/net/wireless/ath/ath9k/reg.h @@ -2311,6 +2311,8 @@ enum { #define AR_BTCOEX_MAX_TXPWR(_x) (0x18c0 + ((_x) << 2)) #define AR_BTCOEX_WL_LNA 0x1940 #define AR_BTCOEX_RFGAIN_CTRL 0x1944 +#define AR_BTCOEX_WL_LNA_TIMEOUT 0x003FFFFF +#define AR_BTCOEX_WL_LNA_TIMEOUT_S 0 #define AR_BTCOEX_CTRL2 0x1948 #define AR_BTCOEX_CTRL2_TXPWR_THRESH 0x0007F800 -- 2.20.1