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-rw-r--r--package/mac80211/patches/566-ath9k_stbc_support.patch57
1 files changed, 57 insertions, 0 deletions
diff --git a/package/mac80211/patches/566-ath9k_stbc_support.patch b/package/mac80211/patches/566-ath9k_stbc_support.patch
new file mode 100644
index 0000000000..b403377b5d
--- /dev/null
+++ b/package/mac80211/patches/566-ath9k_stbc_support.patch
@@ -0,0 +1,57 @@
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -217,6 +217,12 @@ static void setup_ht_cap(struct ath_soft
+ else
+ max_streams = 2;
+
++ if (AR_SREV_9280_10_OR_LATER(ah)) {
++ if (max_streams >= 2)
++ ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
++ ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
++ }
++
+ /* set up supported mcs set */
+ memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
+ tx_streams = count_streams(common->tx_chainmask, max_streams);
+--- a/drivers/net/wireless/ath/ath9k/mac.h
++++ b/drivers/net/wireless/ath/ath9k/mac.h
+@@ -37,6 +37,8 @@
+ AR_2040_##_index : 0) \
+ |((_series)[_index].RateFlags & ATH9K_RATESERIES_HALFGI ? \
+ AR_GI##_index : 0) \
++ |((_series)[_index].RateFlags & ATH9K_RATESERIES_STBC ? \
++ AR_STBC##_index : 0) \
+ |SM((_series)[_index].ChSel, AR_ChainSel##_index))
+
+ #define CCK_SIFS_TIME 10
+@@ -434,7 +436,10 @@ struct ar5416_desc {
+ #define AR_ChainSel3_S 17
+ #define AR_RTSCTSRate 0x0ff00000
+ #define AR_RTSCTSRate_S 20
+-#define AR_TxCtlRsvd70 0xf0000000
++#define AR_STBC0 0x10000000
++#define AR_STBC1 0x20000000
++#define AR_STBC2 0x40000000
++#define AR_STBC3 0x80000000
+
+ #define AR_TxRSSIAnt00 0x000000ff
+ #define AR_TxRSSIAnt00_S 0
+@@ -647,6 +652,7 @@ enum ath9k_rx_filter {
+ #define ATH9K_RATESERIES_RTS_CTS 0x0001
+ #define ATH9K_RATESERIES_2040 0x0002
+ #define ATH9K_RATESERIES_HALFGI 0x0004
++#define ATH9K_RATESERIES_STBC 0x0008
+
+ struct ath9k_11n_rate_series {
+ u32 Tries;
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1607,6 +1607,8 @@ static void ath_buf_set_rate(struct ath_
+ series[i].Rate = rix | 0x80;
+ series[i].PktDuration = ath_pkt_duration(sc, rix, bf,
+ is_40, is_sgi, is_sp);
++ if (rix < 8 && (tx_info->flags & IEEE80211_TX_CTL_STBC))
++ series[i].RateFlags |= ATH9K_RATESERIES_STBC;
+ continue;
+ }
+