ar9170: handle otus' A-MPDU density definitions

Otus uses slightly different set of "Minimum MPDU Start Spacing" values
than the 802.11n D2.0 specifies. (the whole table is shifted by one and
therefore the 16us spacing is not officially available!)

And while we're at it, we also initialize our MAC's density register.
So, this annoying _feature_ will not break TX A-MPDU later.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ar9170/hw.h b/drivers/net/wireless/ath/ar9170/hw.h
index 95bf812d6fc..3293e0fb24f 100644
--- a/drivers/net/wireless/ath/ar9170/hw.h
+++ b/drivers/net/wireless/ath/ar9170/hw.h
@@ -207,6 +207,8 @@ enum ar9170_cmd {
 #define AR9170_MAC_REG_AC1_AC0_TXOP             (AR9170_MAC_REG_BASE + 0xB44)
 #define AR9170_MAC_REG_AC3_AC2_TXOP             (AR9170_MAC_REG_BASE + 0xB48)
 
+#define AR9170_MAC_REG_AMPDU_SET                (AR9170_MAC_REG_BASE + 0xba0)
+
 #define AR9170_MAC_REG_ACK_TABLE                (AR9170_MAC_REG_BASE + 0xC00)
 #define AR9170_MAC_REG_AMPDU_RX_THRESH          (AR9170_MAC_REG_BASE + 0xC50)