diff options
| author | Rajkumar Manoharan | 2011-08-27 08:43:21 +0200 |
|---|---|---|
| committer | John W. Linville | 2011-08-29 21:33:02 +0200 |
| commit | a7be039d347743c289b7280d5de82abf7bbdf1d8 (patch) | |
| tree | 397e4ac8dab82668aec9d312801ac0114f57066c /drivers/net/wireless/ath/ath9k/hw.c | |
| parent | ath9k_hw: Set default slottime as 9us (diff) | |
| download | kernel-qcow2-linux-a7be039d347743c289b7280d5de82abf7bbdf1d8.tar.gz kernel-qcow2-linux-a7be039d347743c289b7280d5de82abf7bbdf1d8.tar.xz kernel-qcow2-linux-a7be039d347743c289b7280d5de82abf7bbdf1d8.zip | |
ath9k: Fix eifs/usec timeout for AR9287 v1.3+
For AR9287 v1.3+ chips, MAC runs at 117MHz. But the initvals
IFS parameters are loaded based on 44/88MHz clockrate. So
eifs/usec from ini should not be used for AR9287 v1.3+.
The mentioned values are tested on 2 chain HT40 mode.
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/hw.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hw.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 4ba0ee91d43a..3a16ba256ef9 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -997,8 +997,14 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah) slottime = 21; sifstime = 64; } else { - eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS)/common->clockrate; - reg = REG_READ(ah, AR_USEC); + if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) { + eifs = AR_D_GBL_IFS_EIFS_ASYNC_FIFO; + reg = AR_USEC_ASYNC_FIFO; + } else { + eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS)/ + common->clockrate; + reg = REG_READ(ah, AR_USEC); + } rx_lat = MS(reg, AR_USEC_RX_LAT); tx_lat = MS(reg, AR_USEC_TX_LAT); |