wifi: mt76: mt7915: add support for MT7981

Add support for the MediaTek MT7981 SoC which is similar to the MT7986
but with a newer IP cores and only 2x ARM Cortex-A53 instead of 4x.
Unlike MT7986 the MT7981 can only connect a single wireless frontend,
usually MT7976 is used for DBDC.
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76_connac.h

@@ -197,11 +197,21 @@ static inline bool is_mt7916(struct mt76_dev *dev)
 	return mt76_chip(dev) == 0x7906;
 }
 
+static inline bool is_mt7981(struct mt76_dev *dev)
+{
+	return mt76_chip(dev) == 0x7981;
+}
+
 static inline bool is_mt7986(struct mt76_dev *dev)
 {
 	return mt76_chip(dev) == 0x7986;
 }
 
+static inline bool is_mt798x(struct mt76_dev *dev)
+{
+	return is_mt7981(dev) || is_mt7986(dev);
+}
+
 static inline bool is_mt7996(struct mt76_dev *dev)
 {
 	return mt76_chip(dev) == 0x7990;

drivers/net/wireless/mediatek/mt76/mt7915/Kconfig

@@ -14,12 +14,12 @@ config MT7915E
 
 	  To compile this driver as a module, choose M here.
 
-config MT7986_WMAC
-	bool "MT7986 (SoC) WMAC support"
+config MT798X_WMAC
+	bool "MT798x (SoC) WMAC support"
 	depends on MT7915E
 	depends on ARCH_MEDIATEK || COMPILE_TEST
 	select REGMAP
 	help
-	  This adds support for the built-in WMAC on MT7986 SoC device
+	  This adds support for the built-in WMAC on MT7981 and MT7986 SoC device
 	  which has the same feature set as a MT7915, but enables 6E
 	  support.

drivers/net/wireless/mediatek/mt76/mt7915/Makefile

@@ -6,5 +6,5 @@ mt7915e-y := pci.o init.o dma.o eeprom.o main.o mcu.o mac.o \
 	     debugfs.o mmio.o
 
 mt7915e-$(CONFIG_NL80211_TESTMODE) += testmode.o
-mt7915e-$(CONFIG_MT7986_WMAC) += soc.o
+mt7915e-$(CONFIG_MT798X_WMAC) += soc.o
 mt7915e-$(CONFIG_DEV_COREDUMP) += coredump.o

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

@@ -52,7 +52,7 @@ static const struct mt7915_mem_region mt7916_mem_regions[] = {
 	},
 };
 
-static const struct mt7915_mem_region mt7986_mem_regions[] = {
+static const struct mt7915_mem_region mt798x_mem_regions[] = {
 	{
 		.start = 0x00800000,
 		.len = 0x0005ffff,
@@ -92,9 +92,10 @@ mt7915_coredump_get_mem_layout(struct mt7915_dev *dev, u32 *num)
 	case 0x7915:
 		*num = ARRAY_SIZE(mt7915_mem_regions);
 		return &mt7915_mem_regions[0];
+	case 0x7981:
 	case 0x7986:
-		*num = ARRAY_SIZE(mt7986_mem_regions);
-		return &mt7986_mem_regions[0];
+		*num = ARRAY_SIZE(mt798x_mem_regions);
+		return &mt798x_mem_regions[0];
 	case 0x7916:
 		*num = ARRAY_SIZE(mt7916_mem_regions);
 		return &mt7916_mem_regions[0];

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

@@ -11,7 +11,7 @@ mt7915_init_tx_queues(struct mt7915_phy *phy, int idx, int n_desc, int ring_base
 	struct mt7915_dev *dev = phy->dev;
 
 	if (mtk_wed_device_active(&phy->dev->mt76.mmio.wed)) {
-		if (is_mt7986(&dev->mt76))
+		if (is_mt798x(&dev->mt76))
 			ring_base += MT_TXQ_ID(0) * MT_RING_SIZE;
 		else
 			ring_base = MT_WED_TX_RING_BASE;
@@ -370,7 +370,7 @@ static int mt7915_dma_enable(struct mt7915_dev *dev)
 		int ret;
 
 		wed_irq_mask |= MT_INT_TX_DONE_BAND0 | MT_INT_TX_DONE_BAND1;
-		if (!is_mt7986(&dev->mt76))
+		if (!is_mt798x(&dev->mt76))
 			mt76_wr(dev, MT_INT_WED_MASK_CSR, wed_irq_mask);
 		else
 			mt76_wr(dev, MT_INT_MASK_CSR, wed_irq_mask);
@@ -404,7 +404,7 @@ int mt7915_dma_init(struct mt7915_dev *dev, struct mt7915_phy *phy2)
 	mt7915_dma_disable(dev, true);
 
 	if (mtk_wed_device_active(&mdev->mmio.wed)) {
-		if (!is_mt7986(mdev)) {
+		if (!is_mt798x(mdev)) {
 			u8 wed_control_rx1 = is_mt7915(mdev) ? 1 : 2;
 
 			mt76_set(dev, MT_WFDMA_HOST_CONFIG,

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

@@ -39,6 +39,8 @@ static int mt7915_check_eeprom(struct mt7915_dev *dev)
 		return CHECK_EEPROM_ERR(is_mt7915(&dev->mt76));
 	case 0x7916:
 		return CHECK_EEPROM_ERR(is_mt7916(&dev->mt76));
+	case 0x7981:
+		return CHECK_EEPROM_ERR(is_mt7981(&dev->mt76));
 	case 0x7986:
 		return CHECK_EEPROM_ERR(is_mt7986(&dev->mt76));
 	default:
@@ -52,6 +54,9 @@ static char *mt7915_eeprom_name(struct mt7915_dev *dev)
 	case 0x7915:
 		return dev->dbdc_support ?
 		       MT7915_EEPROM_DEFAULT_DBDC : MT7915_EEPROM_DEFAULT;
+	case 0x7981:
+		/* mt7981 only supports mt7976 and only in DBDC mode */
+		return MT7981_EEPROM_MT7976_DEFAULT_DBDC;
 	case 0x7986:
 		switch (mt7915_check_adie(dev, true)) {
 		case MT7976_ONE_ADIE_DBDC:
@@ -215,7 +220,7 @@ void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev,
 					eeprom[MT_EE_WIFI_CONF + 2 + band]);
 		}
 
-		if (!is_mt7986(&dev->mt76))
+		if (!is_mt798x(&dev->mt76))
 			nss_max = 2;
 	}
 

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

@@ -740,7 +740,7 @@ void mt7915_wfsys_reset(struct mt7915_dev *dev)
 		mt76_clear(dev, MT_TOP_MISC, MT_TOP_MISC_FW_STATE);
 
 		msleep(100);
-	} else if (is_mt7986(&dev->mt76)) {
+	} else if (is_mt798x(&dev->mt76)) {
 		mt7986_wmac_disable(dev);
 		msleep(20);
 
@@ -761,7 +761,7 @@ static bool mt7915_band_config(struct mt7915_dev *dev)
 
 	dev->phy.mt76->band_idx = 0;
 
-	if (is_mt7986(&dev->mt76)) {
+	if (is_mt798x(&dev->mt76)) {
 		u32 sku = mt7915_check_adie(dev, true);
 
 		/*
@@ -1170,7 +1170,7 @@ static void mt7915_stop_hardware(struct mt7915_dev *dev)
 	mt7915_dma_cleanup(dev);
 	tasklet_disable(&dev->mt76.irq_tasklet);
 
-	if (is_mt7986(&dev->mt76))
+	if (is_mt798x(&dev->mt76))
 		mt7986_wmac_disable(dev);
 }
 

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

@@ -1594,7 +1594,7 @@ void mt7915_mac_reset_work(struct work_struct *work)
 
 	if (mtk_wed_device_active(&dev->mt76.mmio.wed)) {
 		mtk_wed_device_stop(&dev->mt76.mmio.wed);
-		if (!is_mt7986(&dev->mt76))
+		if (!is_mt798x(&dev->mt76))
 			mt76_wr(dev, MT_INT_WED_MASK_CSR, 0);
 	}
 

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

@@ -13,6 +13,9 @@
 	case 0x7915:						\
 		_fw = MT7915_##name;				\
 		break;						\
+	case 0x7981:						\
+		_fw = MT7981_##name;				\
+		break;						\
 	case 0x7986:						\
 		_fw = MT7986_##name##__VA_ARGS__;		\
 		break;						\

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

@@ -417,7 +417,7 @@ static u32 mt7915_reg_map_l1(struct mt7915_dev *dev, u32 addr)
 	u32 base = FIELD_GET(MT_HIF_REMAP_L1_BASE, addr);
 	u32 l1_remap;
 
-	if (is_mt7986(&dev->mt76))
+	if (is_mt798x(&dev->mt76))
 		return MT_CONN_INFRA_OFFSET(addr);
 
 	l1_remap = is_mt7915(&dev->mt76) ?
@@ -447,7 +447,7 @@ static u32 mt7915_reg_map_l2(struct mt7915_dev *dev, u32 addr)
 		/* use read to push write */
 		dev->bus_ops->rr(&dev->mt76, MT_HIF_REMAP_L2);
 	} else {
-		u32 ofs = is_mt7986(&dev->mt76) ? 0x400000 : 0;
+		u32 ofs = is_mt798x(&dev->mt76) ? 0x400000 : 0;
 
 		offset = FIELD_GET(MT_HIF_REMAP_L2_OFFSET_MT7916, addr);
 		base = FIELD_GET(MT_HIF_REMAP_L2_BASE_MT7916, addr);
@@ -759,7 +759,7 @@ int mt7915_mmio_wed_init(struct mt7915_dev *dev, void *pdev_ptr,
 	wed->wlan.nbuf = MT7915_HW_TOKEN_SIZE;
 	wed->wlan.tx_tbit[0] = is_mt7915(&dev->mt76) ? 4 : 30;
 	wed->wlan.tx_tbit[1] = is_mt7915(&dev->mt76) ? 5 : 31;
-	wed->wlan.txfree_tbit = is_mt7986(&dev->mt76) ? 2 : 1;
+	wed->wlan.txfree_tbit = is_mt798x(&dev->mt76) ? 2 : 1;
 	wed->wlan.token_start = MT7915_TOKEN_SIZE - wed->wlan.nbuf;
 	wed->wlan.wcid_512 = !is_mt7915(&dev->mt76);
 
@@ -769,7 +769,7 @@ int mt7915_mmio_wed_init(struct mt7915_dev *dev, void *pdev_ptr,
 	if (is_mt7915(&dev->mt76)) {
 		wed->wlan.rx_tbit[0] = 16;
 		wed->wlan.rx_tbit[1] = 17;
-	} else if (is_mt7986(&dev->mt76)) {
+	} else if (is_mt798x(&dev->mt76)) {
 		wed->wlan.rx_tbit[0] = 22;
 		wed->wlan.rx_tbit[1] = 23;
 	} else {
@@ -827,6 +827,7 @@ static int mt7915_mmio_init(struct mt76_dev *mdev,
 		dev->reg.map = mt7916_reg_map;
 		dev->reg.map_size = ARRAY_SIZE(mt7916_reg_map);
 		break;
+	case 0x7981:
 	case 0x7986:
 		dev->reg.reg_rev = mt7986_reg;
 		dev->reg.offs_rev = mt7916_offs;
@@ -1036,8 +1037,8 @@ static int __init mt7915_init(void)
 	if (ret)
 		goto error_pci;
 
-	if (IS_ENABLED(CONFIG_MT7986_WMAC)) {
-		ret = platform_driver_register(&mt7986_wmac_driver);
+	if (IS_ENABLED(CONFIG_MT798X_WMAC)) {
+		ret = platform_driver_register(&mt798x_wmac_driver);
 		if (ret)
 			goto error_wmac;
 	}
@@ -1054,8 +1055,8 @@ static int __init mt7915_init(void)
 
 static void __exit mt7915_exit(void)
 {
-	if (IS_ENABLED(CONFIG_MT7986_WMAC))
-		platform_driver_unregister(&mt7986_wmac_driver);
+	if (IS_ENABLED(CONFIG_MT798X_WMAC))
+		platform_driver_unregister(&mt798x_wmac_driver);
 
 	pci_unregister_driver(&mt7915_pci_driver);
 	pci_unregister_driver(&mt7915_hif_driver);

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

@@ -34,6 +34,10 @@
 #define MT7916_FIRMWARE_WM		"mediatek/mt7916_wm.bin"
 #define MT7916_ROM_PATCH		"mediatek/mt7916_rom_patch.bin"
 
+#define MT7981_FIRMWARE_WA		"mediatek/mt7981_wa.bin"
+#define MT7981_FIRMWARE_WM		"mediatek/mt7981_wm.bin"
+#define MT7981_ROM_PATCH		"mediatek/mt7981_rom_patch.bin"
+
 #define MT7986_FIRMWARE_WA		"mediatek/mt7986_wa.bin"
 #define MT7986_FIRMWARE_WM		"mediatek/mt7986_wm.bin"
 #define MT7986_FIRMWARE_WM_MT7975	"mediatek/mt7986_wm_mt7975.bin"
@@ -43,6 +47,9 @@
 #define MT7915_EEPROM_DEFAULT		"mediatek/mt7915_eeprom.bin"
 #define MT7915_EEPROM_DEFAULT_DBDC	"mediatek/mt7915_eeprom_dbdc.bin"
 #define MT7916_EEPROM_DEFAULT		"mediatek/mt7916_eeprom.bin"
+
+#define MT7981_EEPROM_MT7976_DEFAULT_DBDC	"mediatek/mt7981_eeprom_mt7976_dbdc.bin"
+
 #define MT7986_EEPROM_MT7975_DEFAULT		"mediatek/mt7986_eeprom_mt7975.bin"
 #define MT7986_EEPROM_MT7975_DUAL_DEFAULT	"mediatek/mt7986_eeprom_mt7975_dual.bin"
 #define MT7986_EEPROM_MT7976_DEFAULT		"mediatek/mt7986_eeprom_mt7976.bin"
@@ -359,8 +366,7 @@ mt7915_ext_phy(struct mt7915_dev *dev)
 static inline u32 mt7915_check_adie(struct mt7915_dev *dev, bool sku)
 {
 	u32 mask = sku ? MT_CONNINFRA_SKU_MASK : MT_ADIE_TYPE_MASK;
-
-	if (!is_mt7986(&dev->mt76))
+	if (!is_mt798x(&dev->mt76))
 		return 0;
 
 	return mt76_rr(dev, MT_CONNINFRA_SKU_DEC_ADDR) & mask;
@@ -370,9 +376,9 @@ extern const struct ieee80211_ops mt7915_ops;
 extern const struct mt76_testmode_ops mt7915_testmode_ops;
 extern struct pci_driver mt7915_pci_driver;
 extern struct pci_driver mt7915_hif_driver;
-extern struct platform_driver mt7986_wmac_driver;
+extern struct platform_driver mt798x_wmac_driver;
 
-#ifdef CONFIG_MT7986_WMAC
+#ifdef CONFIG_MT798X_WMAC
 int mt7986_wmac_enable(struct mt7915_dev *dev);
 void mt7986_wmac_disable(struct mt7915_dev *dev);
 #else

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

@@ -874,7 +874,12 @@ enum offs_rev {
 #define MT_AFE_RG_WBG_EN_WPLL_UP_MASK	BIT(20)
 #define MT_AFE_RG_WBG_EN_PLL_UP_MASK	(MT_AFE_RG_WBG_EN_BPLL_UP_MASK | \
 					 MT_AFE_RG_WBG_EN_WPLL_UP_MASK)
-#define MT_AFE_RG_WBG_EN_TXCAL_MASK	GENMASK(21, 17)
+#define MT_AFE_RG_WBG_EN_TXCAL_WF4	BIT(29)
+#define MT_AFE_RG_WBG_EN_TXCAL_BT	BIT(21)
+#define MT_AFE_RG_WBG_EN_TXCAL_WF3	BIT(20)
+#define MT_AFE_RG_WBG_EN_TXCAL_WF2	BIT(19)
+#define MT_AFE_RG_WBG_EN_TXCAL_WF1	BIT(18)
+#define MT_AFE_RG_WBG_EN_TXCAL_WF0	BIT(17)
 
 #define MT_ADIE_SLP_CTRL_BASE(_band)	(0x18005000 + ((_band) << 19))
 #define MT_ADIE_SLP_CTRL(_band, ofs)	(MT_ADIE_SLP_CTRL_BASE(_band) + (ofs))
@@ -1099,6 +1104,12 @@ enum offs_rev {
 #define MT_TOP_MCU_EMI_BASE		MT_TOP(0x1c4)
 #define MT_TOP_MCU_EMI_BASE_MASK	GENMASK(19, 0)
 
+#define MT_TOP_WF_AP_PERI_BASE		MT_TOP(0x1c8)
+#define MT_TOP_WF_AP_PERI_BASE_MASK	GENMASK(19, 0)
+
+#define MT_TOP_EFUSE_BASE		MT_TOP(0x1cc)
+#define MT_TOP_EFUSE_BASE_MASK		GENMASK(19, 0)
+
 #define MT_TOP_CONN_INFRA_WAKEUP	MT_TOP(0x1a0)
 #define MT_TOP_CONN_INFRA_WAKEUP_MASK	BIT(0)