From 15a533c47f9ebb8dec8e440275136cbf9c493a1f Mon Sep 17 00:00:00 2001 From: Helmut Schaa Date: Mon, 18 Apr 2011 15:28:04 +0200 Subject: [PATCH] rt2x00: Use correct TBTT_SYNC config in AP mode This seems to fix problems with some powersaving clients since a positive value in TBTT_SYNC_CFG_TBTT_ADJUST introduces beacon skew, which is not wanted in AP mode. Also update the rest of the TBTT_SYNC config according to the legacy drivers in AP mode. Signed-off-by: Helmut Schaa Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2800lib.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index c6f5584128e..e0fa559bfa3 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -1245,6 +1245,25 @@ void rt2800_config_intf(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf, rt2800_register_read(rt2x00dev, BCN_TIME_CFG, ®); rt2x00_set_field32(®, BCN_TIME_CFG_TSF_SYNC, conf->sync); rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg); + + if (conf->sync == TSF_SYNC_AP_NONE) { + /* + * Tune beacon queue transmit parameters for AP mode + */ + rt2800_register_read(rt2x00dev, TBTT_SYNC_CFG, ®); + rt2x00_set_field32(®, TBTT_SYNC_CFG_BCN_CWMIN, 0); + rt2x00_set_field32(®, TBTT_SYNC_CFG_BCN_AIFSN, 1); + rt2x00_set_field32(®, TBTT_SYNC_CFG_BCN_EXP_WIN, 32); + rt2x00_set_field32(®, TBTT_SYNC_CFG_TBTT_ADJUST, 0); + rt2800_register_write(rt2x00dev, TBTT_SYNC_CFG, reg); + } else { + rt2800_register_read(rt2x00dev, TBTT_SYNC_CFG, ®); + rt2x00_set_field32(®, TBTT_SYNC_CFG_BCN_CWMIN, 4); + rt2x00_set_field32(®, TBTT_SYNC_CFG_BCN_AIFSN, 2); + rt2x00_set_field32(®, TBTT_SYNC_CFG_BCN_EXP_WIN, 32); + rt2x00_set_field32(®, TBTT_SYNC_CFG_TBTT_ADJUST, 16); + rt2800_register_write(rt2x00dev, TBTT_SYNC_CFG, reg); + } } if (flags & CONFIG_UPDATE_MAC) { -- 2.43.2