wifi: mt76: mt7996: rework set/get_tsf callabcks to support MLO

This is a preliminary patch in order to enable MLO for MT7996 driver.

Co-developed-by: Bo Jiao <Bo.Jiao@mediatek.com>
Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com>
Co-developed-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250312-b4-mt7996-mlo-p2-v1-19-015b3d6fd928@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>

3 files changed, 33 insertions, 19 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
index 6870ee189dca..a52b4e71b267 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
@@ -2732,7 +2732,7 @@ void mt7996_mac_add_twt_setup(struct ieee80211_hw *hw,
 
 		flow->sched = true;
 		flow->start_tsf = mt7996_mac_twt_sched_list_add(dev, flow);
-		curr_tsf = __mt7996_get_tsf(hw, msta->vif);
+		curr_tsf = __mt7996_get_tsf(hw, &msta->vif->deflink);
 		div_u64_rem(curr_tsf - flow->start_tsf, interval, &rem);
 		flow_tsf = curr_tsf + interval - rem;
 		twt_agrt->twt = cpu_to_le64(flow_tsf);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/main.c b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
index 40efba5bcaac..8bcb4b8e3ef5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
@@ -1336,10 +1336,10 @@ mt7996_get_stats(struct ieee80211_hw *hw,
 	return 0;
 }
 
-u64 __mt7996_get_tsf(struct ieee80211_hw *hw, struct mt7996_vif *mvif)
+u64 __mt7996_get_tsf(struct ieee80211_hw *hw, struct mt7996_vif_link *link)
 {
 	struct mt7996_dev *dev = mt7996_hw_dev(hw);
-	struct mt7996_phy *phy = mt7996_vif_link_phy(&mvif->deflink);
+	struct mt7996_phy *phy = link->phy;
 	union {
 		u64 t64;
 		u32 t32[2];
@@ -1351,8 +1351,8 @@ u64 __mt7996_get_tsf(struct ieee80211_hw *hw, struct mt7996_vif *mvif)
 
 	lockdep_assert_held(&dev->mt76.mutex);
 
-	n = mvif->deflink.mt76.omac_idx > HW_BSSID_MAX ? HW_BSSID_0
-					       : mvif->deflink.mt76.omac_idx;
+	n = link->mt76.omac_idx > HW_BSSID_MAX ? HW_BSSID_0
+					       : link->mt76.omac_idx;
 	/* TSF software read */
 	mt76_rmw(dev, MT_LPON_TCR(phy->mt76->band_idx, n), MT_LPON_TCR_SW_MODE,
 		 MT_LPON_TCR_SW_READ);
@@ -1370,7 +1370,7 @@ mt7996_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 	u64 ret;
 
 	mutex_lock(&dev->mt76.mutex);
-	ret = __mt7996_get_tsf(hw, mvif);
+	ret = __mt7996_get_tsf(hw, &mvif->deflink);
 	mutex_unlock(&dev->mt76.mutex);
 
 	return ret;
@@ -1382,26 +1382,33 @@ mt7996_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 {
 	struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
 	struct mt7996_dev *dev = mt7996_hw_dev(hw);
-	struct mt7996_phy *phy = mt7996_vif_link_phy(&mvif->deflink);
+	struct mt7996_vif_link *link;
+	struct mt7996_phy *phy;
 	union {
 		u64 t64;
 		u32 t32[2];
 	} tsf = { .t64 = timestamp, };
 	u16 n;
 
-	if (!phy)
-		return;
-
 	mutex_lock(&dev->mt76.mutex);
 
-	n = mvif->deflink.mt76.omac_idx > HW_BSSID_MAX ? HW_BSSID_0
-					       : mvif->deflink.mt76.omac_idx;
+	link = mt7996_vif_link(dev, vif, mvif->mt76.deflink_id);
+	if (!link)
+		goto unlock;
+
+	n = link->mt76.omac_idx > HW_BSSID_MAX ? HW_BSSID_0
+					       : link->mt76.omac_idx;
+	phy = link->phy;
+	if (!phy)
+		goto unlock;
+
 	mt76_wr(dev, MT_LPON_UTTR0(phy->mt76->band_idx), tsf.t32[0]);
 	mt76_wr(dev, MT_LPON_UTTR1(phy->mt76->band_idx), tsf.t32[1]);
 	/* TSF software overwrite */
 	mt76_rmw(dev, MT_LPON_TCR(phy->mt76->band_idx, n), MT_LPON_TCR_SW_MODE,
 		 MT_LPON_TCR_SW_WRITE);
 
+unlock:
 	mutex_unlock(&dev->mt76.mutex);
 }
 
@@ -1411,26 +1418,33 @@ mt7996_offset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 {
 	struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
 	struct mt7996_dev *dev = mt7996_hw_dev(hw);
-	struct mt7996_phy *phy = mt7996_vif_link_phy(&mvif->deflink);
+	struct mt7996_vif_link *link;
+	struct mt7996_phy *phy;
 	union {
 		u64 t64;
 		u32 t32[2];
 	} tsf = { .t64 = timestamp, };
 	u16 n;
 
-	if (!phy)
-		return;
-
 	mutex_lock(&dev->mt76.mutex);
 
-	n = mvif->deflink.mt76.omac_idx > HW_BSSID_MAX ? HW_BSSID_0
-					       : mvif->deflink.mt76.omac_idx;
+	link = mt7996_vif_link(dev, vif, mvif->mt76.deflink_id);
+	if (!link)
+		goto unlock;
+
+	phy = link->phy;
+	if (!phy)
+		goto unlock;
+
+	n = link->mt76.omac_idx > HW_BSSID_MAX ? HW_BSSID_0
+					       : link->mt76.omac_idx;
 	mt76_wr(dev, MT_LPON_UTTR0(phy->mt76->band_idx), tsf.t32[0]);
 	mt76_wr(dev, MT_LPON_UTTR1(phy->mt76->band_idx), tsf.t32[1]);
 	/* TSF software adjust*/
 	mt76_rmw(dev, MT_LPON_TCR(phy->mt76->band_idx, n), MT_LPON_TCR_SW_MODE,
 		 MT_LPON_TCR_SW_ADJUST);
 
+unlock:
 	mutex_unlock(&dev->mt76.mutex);
 }
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
index 124a48e2706e..815a3c68b872 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
@@ -535,7 +535,7 @@ struct mt7996_dev *mt7996_mmio_probe(struct device *pdev,
 				     void __iomem *mem_base, u32 device_id);
 void mt7996_wfsys_reset(struct mt7996_dev *dev);
 irqreturn_t mt7996_irq_handler(int irq, void *dev_instance);
-u64 __mt7996_get_tsf(struct ieee80211_hw *hw, struct mt7996_vif *mvif);
+u64 __mt7996_get_tsf(struct ieee80211_hw *hw, struct mt7996_vif_link *link);
 int mt7996_register_device(struct mt7996_dev *dev);
 void mt7996_unregister_device(struct mt7996_dev *dev);
 int mt7996_vif_link_add(struct mt76_phy *mphy, struct ieee80211_vif *vif,