generic: add support for wireless offloading on MT7981

Load appropriate firmware for wireless offloading on MT7981.

Signed-off-by: Daniel Golle <[email protected]>

target/linux/generic/backport-5.15/733-v6.4-21-net-mtk_eth_soc-use-WO-firmware-for-MT7981.patch

@@ -0,0 +1,46 @@
+From f5af7931d2a2cae66d0f9dad4ba517b1b00620b3 Mon Sep 17 00:00:00 2001
+From: Daniel Golle <[email protected]>
+Date: Wed, 19 Apr 2023 19:07:23 +0100
+Subject: [PATCH] net: mtk_eth_soc: use WO firmware for MT7981
+
+In order to support wireless offloading on MT7981 we need to load the
+appropriate firmware. Recognize MT7981 and load mt7981_wo.bin.
+
+Signed-off-by: Daniel Golle <[email protected]>
+---
+ drivers/net/ethernet/mediatek/mtk_wed_mcu.c | 7 ++++++-
+ drivers/net/ethernet/mediatek/mtk_wed_wo.h  | 1 +
+ 2 files changed, 7 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
++++ b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
+@@ -326,7 +326,11 @@ mtk_wed_mcu_load_firmware(struct mtk_wed
+ 		wo->hw->index + 1);
+ 
+ 	/* load firmware */
+-	fw_name = wo->hw->index ? MT7986_FIRMWARE_WO1 : MT7986_FIRMWARE_WO0;
++	if (of_device_is_compatible(wo->hw->node, "mediatek,mt7981-wed"))
++		fw_name = MT7981_FIRMWARE_WO;
++	else
++		fw_name = wo->hw->index ? MT7986_FIRMWARE_WO1 : MT7986_FIRMWARE_WO0;
++
+ 	ret = request_firmware(&fw, fw_name, wo->hw->dev);
+ 	if (ret)
+ 		return ret;
+@@ -386,5 +390,6 @@ int mtk_wed_mcu_init(struct mtk_wed_wo *
+ 				  100, MTK_FW_DL_TIMEOUT);
+ }
+ 
++MODULE_FIRMWARE(MT7981_FIRMWARE_WO);
+ MODULE_FIRMWARE(MT7986_FIRMWARE_WO0);
+ MODULE_FIRMWARE(MT7986_FIRMWARE_WO1);
+--- a/drivers/net/ethernet/mediatek/mtk_wed_wo.h
++++ b/drivers/net/ethernet/mediatek/mtk_wed_wo.h
+@@ -88,6 +88,7 @@ enum mtk_wed_dummy_cr_idx {
+ 	MTK_WED_DUMMY_CR_WO_STATUS,
+ };
+ 
++#define MT7981_FIRMWARE_WO	"mediatek/mt7981_wo.bin"
+ #define MT7986_FIRMWARE_WO0	"mediatek/mt7986_wo_0.bin"
+ #define MT7986_FIRMWARE_WO1	"mediatek/mt7986_wo_1.bin"
+ 

target/linux/mediatek/patches-5.15/942-net-ethernet-mtk_wed-move-cpuboot-in-a-dedicated-dts.patch

@@ -77,7 +77,7 @@ Signed-off-by: Lorenzo Bianconi <[email protected]>
  	wed_w32(wo->hw->wed_dev, MTK_WED_SCR0 + 4 * MTK_WED_DUMMY_CR_FWDL,
 --- a/drivers/net/ethernet/mediatek/mtk_wed_wo.h
 +++ b/drivers/net/ethernet/mediatek/mtk_wed_wo.h
-@@ -227,7 +227,8 @@ struct mtk_wed_wo_queue {
+@@ -228,7 +228,8 @@ struct mtk_wed_wo_queue {
  
  struct mtk_wed_wo {
  	struct mtk_wed_hw *hw;