mt76: mt7915: add HE-LTF into fixed rate command

Add HE-LTF control.
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c

@@ -365,12 +365,14 @@ int mt7915_init_debugfs(struct mt7915_dev *dev)
 #ifdef CONFIG_MAC80211_DEBUGFS
 /** per-station debugfs **/
 
-/* usage: <tx mode> <ldpc> <stbc> <bw> <gi> <nss> <mcs> */
 static int mt7915_sta_fixed_rate_set(void *data, u64 rate)
 {
 	struct ieee80211_sta *sta = data;
 	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
 
+	/* usage: <he ltf> <tx mode> <ldpc> <stbc> <bw> <gi> <nss> <mcs>
+	 * <tx mode>: see enum mt76_phy_type
+	 */
 	return mt7915_mcu_set_fixed_rate(msta->vif->phy->dev, sta, rate);
 }
 

drivers/net/wireless/mediatek/mt76/mt7915/mcu.c

@@ -2317,10 +2317,9 @@ int mt7915_mcu_set_fixed_rate(struct mt7915_dev *dev,
 	if (!rate) {
 		ra->field = cpu_to_le32(RATE_PARAM_AUTO);
 		goto out;
-	} else {
-		ra->field = cpu_to_le32(RATE_PARAM_FIXED);
 	}
 
+	ra->field = cpu_to_le32(RATE_PARAM_FIXED);
 	ra->phy.type = FIELD_GET(RATE_CFG_PHY_TYPE, rate);
 	ra->phy.bw = FIELD_GET(RATE_CFG_BW, rate);
 	ra->phy.nss = FIELD_GET(RATE_CFG_NSS, rate);
@@ -2333,10 +2332,12 @@ int mt7915_mcu_set_fixed_rate(struct mt7915_dev *dev,
 		ra->phy.ldpc = FIELD_GET(RATE_CFG_LDPC, rate) * 7;
 
 	/* HT/VHT - SGI: 1, LGI: 0; HE - SGI: 0, MGI: 1, LGI: 2 */
-	if (ra->phy.type > MT_PHY_TYPE_VHT)
-		ra->phy.sgi = ra->phy.mcs * 85;
-	else
-		ra->phy.sgi = ra->phy.mcs * 15;
+	if (ra->phy.type > MT_PHY_TYPE_VHT) {
+		ra->phy.he_ltf = FIELD_GET(RATE_CFG_HE_LTF, rate) * 85;
+		ra->phy.sgi = FIELD_GET(RATE_CFG_GI, rate) * 85;
+	} else {
+		ra->phy.sgi = FIELD_GET(RATE_CFG_GI, rate) * 15;
+	}
 
 out:
 	return mt76_mcu_skb_send_msg(&dev->mt76, skb,

drivers/net/wireless/mediatek/mt76/mt7915/mcu.h

@@ -948,6 +948,7 @@ struct sta_rec_ra_fixed {
 #define RATE_CFG_STBC			GENMASK(19, 16)
 #define RATE_CFG_LDPC			GENMASK(23, 20)
 #define RATE_CFG_PHY_TYPE		GENMASK(27, 24)
+#define RATE_CFG_HE_LTF			GENMASK(31, 28)
 
 struct sta_rec_bf {
 	__le16 tag;