wifi: mt76: connac: add firmware support for mt7992

Support firmware download and enable related AFE PLL for mt7992 chipsets.
This is a preliminary patch for mt7992 chipsets support.

Co-developed-by: Benjamin Lin <benjamin-jw.lin@mediatek.com>
Signed-off-by: Benjamin Lin <benjamin-jw.lin@mediatek.com>
Co-developed-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Author: StanleyYP Wang

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

@@ -222,6 +222,11 @@ static inline bool is_mt7996(struct mt76_dev *dev)
 	return mt76_chip(dev) == 0x7990;
 }
 
+static inline bool is_mt7992(struct mt76_dev *dev)
+{
+	return mt76_chip(dev) == 0x7992;
+}
+
 static inline bool is_mt7622(struct mt76_dev *dev)
 {
 	if (!IS_ENABLED(CONFIG_MT7622_WMAC))

drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c

@@ -67,7 +67,8 @@ int mt76_connac_mcu_init_download(struct mt76_dev *dev, u32 addr, u32 len,
 	if ((!is_connac_v1(dev) && addr == MCU_PATCH_ADDRESS) ||
 	    (is_mt7921(dev) && addr == 0x900000) ||
 	    (is_mt7925(dev) && addr == 0x900000) ||
-	    (is_mt7996(dev) && addr == 0x900000))
+	    (is_mt7996(dev) && addr == 0x900000) ||
+	    (is_mt7992(dev) && addr == 0x900000))
 		cmd = MCU_CMD(PATCH_START_REQ);
 	else
 		cmd = MCU_CMD(TARGET_ADDRESS_LEN_REQ);

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

@@ -888,6 +888,10 @@ static int mt7996_init_hardware(struct mt7996_dev *dev)
 	int ret, idx;
 
 	mt76_wr(dev, MT_INT_SOURCE_CSR, ~0);
+	if (is_mt7992(&dev->mt76)) {
+		mt76_rmw(dev, MT_AFE_CTL_BAND_PLL_03(MT_BAND0), MT_AFE_CTL_BAND_PLL_03_MSB_EN, 0);
+		mt76_rmw(dev, MT_AFE_CTL_BAND_PLL_03(MT_BAND1), MT_AFE_CTL_BAND_PLL_03_MSB_EN, 0);
+	}
 
 	INIT_WORK(&dev->init_work, mt7996_init_work);
 	INIT_WORK(&dev->wed_rro.work, mt7996_wed_rro_work);

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

@@ -10,6 +10,20 @@
 #include "mac.h"
 #include "eeprom.h"
 
+#define fw_name(_dev, name, ...)	({			\
+	char *_fw;						\
+	switch (mt76_chip(&(_dev)->mt76)) {			\
+	case 0x7992:						\
+		_fw = MT7992_##name;				\
+		break;						\
+	case 0x7990:						\
+	default:						\
+		_fw = MT7996_##name;				\
+		break;						\
+	}							\
+	_fw;							\
+})
+
 struct mt7996_patch_hdr {
 	char build_date[16];
 	char platform[4];
@@ -2639,7 +2653,7 @@ static int mt7996_load_patch(struct mt7996_dev *dev)
 		return -EAGAIN;
 	}
 
-	ret = request_firmware(&fw, MT7996_ROM_PATCH, dev->mt76.dev);
+	ret = request_firmware(&fw, fw_name(dev, ROM_PATCH), dev->mt76.dev);
 	if (ret)
 		goto out;
 
@@ -2802,17 +2816,17 @@ static int mt7996_load_ram(struct mt7996_dev *dev)
 {
 	int ret;
 
-	ret = __mt7996_load_ram(dev, "WM", MT7996_FIRMWARE_WM,
+	ret = __mt7996_load_ram(dev, "WM", fw_name(dev, FIRMWARE_WM),
 				MT7996_RAM_TYPE_WM);
 	if (ret)
 		return ret;
 
-	ret = __mt7996_load_ram(dev, "DSP", MT7996_FIRMWARE_DSP,
+	ret = __mt7996_load_ram(dev, "DSP", fw_name(dev, FIRMWARE_DSP),
 				MT7996_RAM_TYPE_DSP);
 	if (ret)
 		return ret;
 
-	return __mt7996_load_ram(dev, "WA", MT7996_FIRMWARE_WA,
+	return __mt7996_load_ram(dev, "WA", fw_name(dev, FIRMWARE_WA),
 				 MT7996_RAM_TYPE_WA);
 }
 

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

@@ -33,6 +33,11 @@
 #define MT7996_FIRMWARE_DSP		"mediatek/mt7996/mt7996_dsp.bin"
 #define MT7996_ROM_PATCH		"mediatek/mt7996/mt7996_rom_patch.bin"
 
+#define MT7992_FIRMWARE_WA		"mediatek/mt7996/mt7992_wa.bin"
+#define MT7992_FIRMWARE_WM		"mediatek/mt7996/mt7992_wm.bin"
+#define MT7992_FIRMWARE_DSP		"mediatek/mt7996/mt7992_dsp.bin"
+#define MT7992_ROM_PATCH		"mediatek/mt7996/mt7992_rom_patch.bin"
+
 #define MT7996_EEPROM_DEFAULT		"mediatek/mt7996/mt7996_eeprom.bin"
 #define MT7996_EEPROM_SIZE		7680
 #define MT7996_EEPROM_BLOCK_SIZE	16

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

@@ -244,3 +244,7 @@ MODULE_FIRMWARE(MT7996_FIRMWARE_WA);
 MODULE_FIRMWARE(MT7996_FIRMWARE_WM);
 MODULE_FIRMWARE(MT7996_FIRMWARE_DSP);
 MODULE_FIRMWARE(MT7996_ROM_PATCH);
+MODULE_FIRMWARE(MT7992_FIRMWARE_WA);
+MODULE_FIRMWARE(MT7992_FIRMWARE_WM);
+MODULE_FIRMWARE(MT7992_FIRMWARE_DSP);
+MODULE_FIRMWARE(MT7992_ROM_PATCH);

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

@@ -683,4 +683,11 @@ enum base_rev {
 #define MT_MCU_WM_EXCP_LR_CTRL			MT_MCU_WM_EXCP(0x200)
 #define MT_MCU_WM_EXCP_LR_LOG			MT_MCU_WM_EXCP(0x204)
 
+/* CONN AFE CTL CON */
+#define MT_AFE_CTL_BASE				0x18043000
+#define MT_AFE_CTL_BAND(_band, ofs)		(MT_AFE_CTL_BASE + \
+						 ((_band) * 0x1000) + (ofs))
+#define MT_AFE_CTL_BAND_PLL_03(_band)		MT_AFE_CTL_BAND(_band, 0x2c)
+#define MT_AFE_CTL_BAND_PLL_03_MSB_EN		BIT(1)
+
 #endif