wifi: mt76: mt7996: introduce mt7996_band_valid()

Replace dbdc_support and tbtc_support with mt7996_band_valid() to
support mt7996 variants with band0/band2 dual-band support.
This changes reduces ambiguity when checking supported bands on different
variants or new chipsets, as well as during the init configurations on
DMA TX/RX queues or irq masks.
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7996/dma.c

@@ -233,13 +233,13 @@ void mt7996_dma_start(struct mt7996_dev *dev, bool reset, bool wed_reset)
 	/* enable interrupts for TX/RX rings */
 	irq_mask = MT_INT_MCU_CMD | MT_INT_RX_DONE_MCU | MT_INT_TX_DONE_MCU;
 
-	if (!dev->mphy.band_idx)
+	if (mt7996_band_valid(dev, MT_BAND0))
 		irq_mask |= MT_INT_BAND0_RX_DONE;
 
-	if (dev->dbdc_support)
+	if (mt7996_band_valid(dev, MT_BAND1))
 		irq_mask |= MT_INT_BAND1_RX_DONE;
 
-	if (dev->tbtc_support)
+	if (mt7996_band_valid(dev, MT_BAND2))
 		irq_mask |= MT_INT_BAND2_RX_DONE;
 
 	if (mtk_wed_device_active(wed) && wed_reset) {
@@ -382,7 +382,7 @@ int mt7996_dma_rro_init(struct mt7996_dev *dev)
 	if (ret)
 		return ret;
 
-	if (dev->dbdc_support) {
+	if (mt7996_band_valid(dev, MT_BAND1)) {
 		/* rx msdu page queue for band1 */
 		mdev->q_rx[MT_RXQ_MSDU_PAGE_BAND1].flags =
 			MT_WED_RRO_Q_MSDU_PG(1) | MT_QFLAG_WED_RRO_EN;
@@ -396,7 +396,7 @@ int mt7996_dma_rro_init(struct mt7996_dev *dev)
 			return ret;
 	}
 
-	if (dev->tbtc_support) {
+	if (mt7996_band_valid(dev, MT_BAND2)) {
 		/* rx msdu page queue for band2 */
 		mdev->q_rx[MT_RXQ_MSDU_PAGE_BAND2].flags =
 			MT_WED_RRO_Q_MSDU_PG(2) | MT_QFLAG_WED_RRO_EN;
@@ -516,7 +516,7 @@ int mt7996_dma_init(struct mt7996_dev *dev)
 	if (ret)
 		return ret;
 
-	if (dev->tbtc_support || dev->mphy.band_idx == MT_BAND2) {
+	if (mt7996_band_valid(dev, MT_BAND2)) {
 		/* rx data queue for band2 */
 		rx_base = MT_RXQ_RING_BASE(MT_RXQ_BAND2) + hif1_ofs;
 		ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_BAND2],
@@ -570,7 +570,7 @@ int mt7996_dma_init(struct mt7996_dev *dev)
 		if (ret)
 			return ret;
 
-		if (dev->tbtc_support || dev->mphy.band_idx == MT_BAND2) {
+		if (mt7996_band_valid(dev, MT_BAND2)) {
 			/* rx rro data queue for band2 */
 			dev->mt76.q_rx[MT_RXQ_RRO_BAND2].flags =
 				MT_WED_RRO_Q_DATA(1) | MT_QFLAG_WED_RRO_EN;

drivers/net/wireless/mediatek/mt76/mt7996/init.c

@@ -540,7 +540,8 @@ int mt7996_txbf_init(struct mt7996_dev *dev)
 {
 	int ret;
 
-	if (dev->dbdc_support) {
+	if (mt7996_band_valid(dev, MT_BAND1) ||
+	    mt7996_band_valid(dev, MT_BAND2)) {
 		ret = mt7996_mcu_set_txbf(dev, BF_MOD_EN_CTRL);
 		if (ret)
 			return ret;
@@ -563,11 +564,7 @@ static int mt7996_register_phy(struct mt7996_dev *dev, struct mt7996_phy *phy,
 	int ret;
 	struct mtk_wed_device *wed = &dev->mt76.mmio.wed;
 
-	if (band != MT_BAND1 && band != MT_BAND2)
-		return 0;
-
-	if ((band == MT_BAND1 && !dev->dbdc_support) ||
-	    (band == MT_BAND2 && !dev->tbtc_support))
+	if (!mt7996_band_valid(dev, band) || band == MT_BAND0)
 		return 0;
 
 	if (phy)
@@ -897,9 +894,6 @@ static int mt7996_init_hardware(struct mt7996_dev *dev)
 	INIT_LIST_HEAD(&dev->wed_rro.poll_list);
 	spin_lock_init(&dev->wed_rro.lock);
 
-	dev->dbdc_support = true;
-	dev->tbtc_support = true;
-
 	ret = mt7996_dma_init(dev);
 	if (ret)
 		return ret;
@@ -1331,8 +1325,6 @@ int mt7996_register_device(struct mt7996_dev *dev)
 	if (ret)
 		return ret;
 
-	ieee80211_queue_work(mt76_hw(dev), &dev->init_work);
-
 	ret = mt7996_register_phy(dev, mt7996_phy2(dev), MT_BAND1);
 	if (ret)
 		return ret;
@@ -1341,13 +1333,24 @@ int mt7996_register_device(struct mt7996_dev *dev)
 	if (ret)
 		return ret;
 
+	ieee80211_queue_work(mt76_hw(dev), &dev->init_work);
+
 	dev->recovery.hw_init_done = true;
 
 	ret = mt7996_init_debugfs(&dev->phy);
 	if (ret)
-		return ret;
+		goto error;
 
-	return mt7996_coredump_register(dev);
+	ret = mt7996_coredump_register(dev);
+	if (ret)
+		goto error;
+
+	return 0;
+
+error:
+	cancel_work_sync(&dev->init_work);
+
+	return ret;
 }
 
 void mt7996_unregister_device(struct mt7996_dev *dev)

drivers/net/wireless/mediatek/mt76/mt7996/mcu.c

@@ -2964,9 +2964,10 @@ mt7996_mcu_init_rx_airtime(struct mt7996_dev *dev)
 {
 	struct uni_header hdr = {};
 	struct sk_buff *skb;
-	int len, num;
+	int len, num, i;
 
-	num = 2 + 2 * (dev->dbdc_support + dev->tbtc_support);
+	num = 2 + 2 * (mt7996_band_valid(dev, MT_BAND1) +
+		       mt7996_band_valid(dev, MT_BAND2));
 	len = sizeof(hdr) + num * sizeof(struct vow_rx_airtime);
 	skb = mt76_mcu_msg_alloc(&dev->mt76, NULL, len);
 	if (!skb)
@@ -2974,13 +2975,10 @@ mt7996_mcu_init_rx_airtime(struct mt7996_dev *dev)
 
 	skb_put_data(skb, &hdr, sizeof(hdr));
 
-	mt7996_add_rx_airtime_tlv(skb, dev->mt76.phy.band_idx);
-
-	if (dev->dbdc_support)
-		mt7996_add_rx_airtime_tlv(skb, MT_BAND1);
-
-	if (dev->tbtc_support)
-		mt7996_add_rx_airtime_tlv(skb, MT_BAND2);
+	for (i = 0; i < __MT_MAX_BAND; i++) {
+		if (mt7996_band_valid(dev, i))
+			mt7996_add_rx_airtime_tlv(skb, i);
+	}
 
 	return mt76_mcu_skb_send_msg(&dev->mt76, skb,
 				     MCU_WM_UNI_CMD(VOW), true);

drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h

@@ -280,8 +280,6 @@ struct mt7996_dev {
 
 	u32 hw_pattern;
 
-	bool dbdc_support:1;
-	bool tbtc_support:1;
 	bool flash_mode:1;
 	bool has_eht:1;
 	bool has_rro:1;
@@ -393,6 +391,17 @@ mt7996_phy3(struct mt7996_dev *dev)
 	return __mt7996_phy(dev, MT_BAND2);
 }
 
+static inline bool
+mt7996_band_valid(struct mt7996_dev *dev, u8 band)
+{
+	/* tri-band support */
+	if (band <= MT_BAND2 &&
+	    mt76_get_field(dev, MT_PAD_GPIO, MT_PAD_GPIO_ADIE_COMB) <= 1)
+		return true;
+
+	return band == MT_BAND0 || band == MT_BAND2;
+}
+
 extern const struct ieee80211_ops mt7996_ops;
 extern struct pci_driver mt7996_pci_driver;
 extern struct pci_driver mt7996_hif_driver;
@@ -494,7 +503,8 @@ int mt7996_mcu_wed_rro_reset_sessions(struct mt7996_dev *dev, u16 id);
 
 static inline u8 mt7996_max_interface_num(struct mt7996_dev *dev)
 {
-	return MT7996_MAX_INTERFACES * (1 + dev->dbdc_support + dev->tbtc_support);
+	return MT7996_MAX_INTERFACES * (1 + mt7996_band_valid(dev, MT_BAND1) +
+					mt7996_band_valid(dev, MT_BAND2));
 }
 
 static inline u16 mt7996_wtbl_size(struct mt7996_dev *dev)

drivers/net/wireless/mediatek/mt76/mt7996/regs.h

@@ -629,6 +629,9 @@ enum base_rev {
 #define MT_TOP_MISC				MT_TOP(0xf0)
 #define MT_TOP_MISC_FW_STATE			GENMASK(2, 0)
 
+#define MT_PAD_GPIO				0x700056f0
+#define MT_PAD_GPIO_ADIE_COMB			GENMASK(16, 15)
+
 #define MT_HW_REV				0x70010204
 #define MT_HW_REV1				0x8a00