ath9k_hw: add LDPC support for AR9003

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/ar9003_mac.c

@@ -330,7 +330,8 @@ static void ar9003_hw_set11n_txdesc(struct ath_hw *ah, void *ds,
 		| (flags & ATH9K_TXDESC_EXT_ONLY ? AR_ExtOnly : 0)
 		| (flags & ATH9K_TXDESC_EXT_AND_CTL ? AR_ExtAndCtl : 0);
 
-	ads->ctl17 = SM(keyType, AR_EncrType);
+	ads->ctl17 = SM(keyType, AR_EncrType) |
+		     (flags & ATH9K_TXDESC_LDPC ? AR_LDPC : 0);
 	ads->ctl18 = 0;
 	ads->ctl19 = AR_Not_Sounding;
 

drivers/net/wireless/ath/ath9k/hw.c

@@ -2088,7 +2088,7 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
 	}
 
 	if (AR_SREV_9300_20_OR_LATER(ah)) {
-		pCap->hw_caps |= ATH9K_HW_CAP_EDMA;
+		pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_LDPC;
 		pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
 		pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
 		pCap->rx_status_len = sizeof(struct ar9003_rxs);

drivers/net/wireless/ath/ath9k/hw.h

@@ -179,6 +179,7 @@ enum ath9k_hw_caps {
 	ATH9K_HW_CAP_4KB_SPLITTRANS             = BIT(16),
 	ATH9K_HW_CAP_EDMA			= BIT(17),
 	ATH9K_HW_CAP_RAC_SUPPORTED		= BIT(18),
+	ATH9K_HW_CAP_LDPC			= BIT(19),
 };
 
 enum ath9k_capability_type {

drivers/net/wireless/ath/ath9k/mac.h

@@ -264,6 +264,7 @@ struct ath_desc {
 #define ATH9K_TXDESC_VMF		0x0100
 #define ATH9K_TXDESC_FRAG_IS_ON 	0x0200
 #define ATH9K_TXDESC_LOWRXCHAIN		0x0400
+#define ATH9K_TXDESC_LDPC		0x00010000
 
 #define ATH9K_RXDESC_INTREQ		0x0020
 
@@ -413,6 +414,7 @@ struct ar5416_desc {
 #define AR_EncrType         0x0c000000
 #define AR_EncrType_S       26
 #define AR_TxCtlRsvd61      0xf0000000
+#define AR_LDPC             0x80000000
 
 #define AR_2040_0           0x00000001
 #define AR_GI0              0x00000002