[PATCH mt76 06/14] wifi: mt76: mt7996: Introduce the capability to reset MT7992 WED device

[Lorenzo Bianconi]

From: Rex Lu <rex.lu at mediatek.com>

This is a preliminary patch to enable WED support for MT7992 Kite
chipset supported by MT7996 driver.

Co-developed-by: Sujuan Chen <sujuan.chen at mediatek.com>
Signed-off-by: Sujuan Chen <sujuan.chen at mediatek.com>
Co-developed-by: Benjamin Lin <benjamin-jw.lin at mediatek.com>
Signed-off-by: Benjamin Lin <benjamin-jw.lin at mediatek.com>
Signed-off-by: Rex Lu <rex.lu at mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo at kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7996/init.c   |  6 ++---
 drivers/net/wireless/mediatek/mt76/mt7996/mac.c    | 30 ++++++++++++++++++++++
 drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h |  1 +
 3 files changed, 34 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/init.c b/drivers/net/wireless/mediatek/mt76/mt7996/init.c
index 543572328d65ff75ab654f41ff85b22ed0f34beb..8dc2e9155cba66cb51ba992c31da3e4273207f44 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/init.c
@@ -726,9 +726,9 @@ void mt7996_wfsys_reset(struct mt7996_dev *dev)
 	msleep(20);
 }
 
-#ifdef CONFIG_NET_MEDIATEK_SOC_WED
-static void mt7996_rro_hw_init(struct mt7996_dev *dev)
+void mt7996_rro_hw_init(struct mt7996_dev *dev)
 {
+#ifdef CONFIG_NET_MEDIATEK_SOC_WED
 	struct mtk_wed_device *wed = &dev->mt76.mmio.wed;
 	u32 reg = MT_RRO_ADDR_ELEM_SEG_ADDR0;
 	int i;
@@ -808,8 +808,8 @@ static void mt7996_rro_hw_init(struct mt7996_dev *dev)
 	/* interrupt enable */
 	mt76_wr(dev, MT_RRO_HOST_INT_ENA,
 		MT_RRO_HOST_INT_ENA_HOST_RRO_DONE_ENA);
-}
 #endif
+}
 
 static int mt7996_wed_rro_init(struct mt7996_dev *dev)
 {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
index d6531b74be1f15467c06e385d0efabad806db6b8..2ca10588b7a67be8a6d72b81c63322ec38cca257 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
@@ -1847,6 +1847,32 @@ mt7996_mac_restart(struct mt7996_dev *dev)
 	if (ret)
 		goto out;
 
+	if (mtk_wed_device_active(&dev->mt76.mmio.wed) && dev->has_rro) {
+		u32 wed_irq_mask = dev->mt76.mmio.irqmask |
+				   MT_INT_RRO_RX_DONE |
+				   MT_INT_TX_DONE_BAND2;
+
+		mt7996_rro_hw_init(dev);
+		mt76_for_each_q_rx(&dev->mt76, i) {
+			if (mt76_queue_is_wed_rro_ind(&dev->mt76.q_rx[i]) ||
+			    mt76_queue_is_wed_rro_msdu_pg(&dev->mt76.q_rx[i]))
+				mt76_queue_rx_reset(dev, i);
+		}
+
+		mt76_wr(dev, MT_INT_MASK_CSR, wed_irq_mask);
+		mtk_wed_device_start_hw_rro(&dev->mt76.mmio.wed, wed_irq_mask,
+					    false);
+		mt7996_irq_enable(dev, wed_irq_mask);
+		mt7996_irq_disable(dev, 0);
+	}
+
+	if (mtk_wed_device_active(&dev->mt76.mmio.wed_hif2)) {
+		mt76_wr(dev, MT_INT_PCIE1_MASK_CSR,
+			MT_INT_TX_RX_DONE_EXT);
+		mtk_wed_device_start(&dev->mt76.mmio.wed_hif2,
+				     MT_INT_TX_RX_DONE_EXT);
+	}
+
 	/* set the necessary init items */
 	ret = mt7996_mcu_set_eeprom(dev);
 	if (ret)
@@ -2059,6 +2085,10 @@ void mt7996_mac_reset_work(struct work_struct *work)
 
 		mt76_wr(dev, MT_INT_MASK_CSR, wed_irq_mask);
 
+		if (is_mt7992(&dev->mt76) && dev->has_rro)
+			mt76_wr(dev, MT_RRO_3_0_EMU_CONF,
+				MT_RRO_3_0_EMU_CONF_EN_MASK);
+
 		mtk_wed_device_start_hw_rro(&dev->mt76.mmio.wed, wed_irq_mask,
 					    true);
 		mt7996_irq_enable(dev, wed_irq_mask);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
index d269dcf957d74757a23dc4c48ef01f5e04668119..1efcfaf32d451e12a817c9b835fcc5e49b5ccb19 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
@@ -569,6 +569,7 @@ extern struct pci_driver mt7996_hif_driver;
 
 struct mt7996_dev *mt7996_mmio_probe(struct device *pdev,
 				     void __iomem *mem_base, u32 device_id);
+void mt7996_rro_hw_init(struct mt7996_dev *dev);
 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_link *link);

-- 
2.50.1