[PATCH 1/3] ath9k: Update rate control for 11NA HT40 mode

[PATCH 1/3] ath9k: Update rate control for 11NA HT40 mode

[Vasanthakumar Thiagarajan]

Now the lowest rate in 11na ht40 mode is 13.5Mbps this shortens the
range when compared to 11na ht20 mode where the lowest rate is 6.5Mbps.
To improve the range, make 6.5Mbps as the lowest rate in 11na ht40 mode,
this improves the range by approximately 2dB. 11ng ht40 does not have
this issue as it also has basic rates (1, 2, 5.5 and 11).

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
---
 drivers/net/wireless/ath/ath9k/rc.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c
index a07efa2..59ad47c 100644
--- a/drivers/net/wireless/ath/ath9k/rc.c
+++ b/drivers/net/wireless/ath/ath9k/rc.c
@@ -44,7 +44,7 @@ static const struct ath_rate_table ar5416_11na_ratetable = {
 		{ VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
 			29300, 0x0c, 0x00, 108,
 			4,  7, 7, 7, 7, 0 },
-		{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
+		{ VALID_2040, VALID_2040, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
 			6400, 0x80, 0x00, 0,
 			0, 8, 24, 8, 24, 3216 },
 		{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */
@@ -463,8 +463,6 @@ static int ath_rc_valid_phyrate(u32 phy, u32 capflag, int ignore_cw)
 	if (!ignore_cw && WLAN_RC_PHY_HT(phy))
 		if (WLAN_RC_PHY_40(phy) && !(capflag & WLAN_RC_40_FLAG))
 			return 0;
-		if (!WLAN_RC_PHY_40(phy) && (capflag & WLAN_RC_40_FLAG))
-			return 0;
 	return 1;
 }
 
-- 
1.5.5.1

[PATCH 2/3] ath9k: Maintain monotonicity of PER while going across different phy

[Vasanthakumar Thiagarajan]

Monotonicity of packet error rate should be kept when moving
from one phy to another (legacy to ht, ht single stream to dual,
etc). Current code skips updating per for other phys.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
---
 drivers/net/wireless/ath/ath9k/rc.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c
index 59ad47c..16a2717 100644
--- a/drivers/net/wireless/ath/ath9k/rc.c
+++ b/drivers/net/wireless/ath/ath9k/rc.c
@@ -1041,9 +1041,6 @@ static void ath_rc_update_ht(struct ath_softc *sc,
 	/* Monotonicity is kept only for rates below the current rate. */
 	if (ath_rc_priv->per[tx_rate] < last_per) {
 		for (rate = tx_rate - 1; rate >= 0; rate--) {
-			if (rate_table->info[rate].phy !=
-			    rate_table->info[tx_rate].phy)
-				break;
 
 			if (ath_rc_priv->per[rate] >
 			    ath_rc_priv->per[rate+1]) {
-- 
1.5.5.1

[PATCH 3/3] ath9k: Remove unused ath9k_hw_intrget()

[Vasanthakumar Thiagarajan]

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
---
 drivers/net/wireless/ath/ath9k/hw.c |    5 -----
 drivers/net/wireless/ath/ath9k/hw.h |    1 -
 2 files changed, 0 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 431854c..7a0a6ae 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -3152,11 +3152,6 @@ bool ath9k_hw_getisr(struct ath_hw *ah, enum ath9k_int *masked)
 	return true;
 }
 
-enum ath9k_int ath9k_hw_intrget(struct ath_hw *ah)
-{
-	return ah->mask_reg;
-}
-
 enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints)
 {
 	u32 omask = ah->mask_reg;
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 2e196df..93a8930 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -612,7 +612,6 @@ void ath9k_hw_configpcipowersave(struct ath_hw *ah, int restore);
 /* Interrupt Handling */
 bool ath9k_hw_intrpend(struct ath_hw *ah);
 bool ath9k_hw_getisr(struct ath_hw *ah, enum ath9k_int *masked);
-enum ath9k_int ath9k_hw_intrget(struct ath_hw *ah);
 enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints);
 
 void ath9k_hw_btcoex_enable(struct ath_hw *ah);
-- 
1.5.5.1