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ath9k_hw: Fix concurrent tx on lower tx power

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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 <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rajkumar Manoharan 2012-10-25 17:16:52 +05:30 committed by John W. Linville
parent 844648423d
commit e75d4ed6a9
2 changed files with 6 additions and 1 deletions
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5
drivers/net/wireless/ath/ath9k/ar9003_mci.c
View File

@ -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,

2
drivers/net/wireless/ath/ath9k/reg.h
View File

@ -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