netdev - [PATCH v2 net-next 08/17] net: ethernet: mtk

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Message-ID: <bb6ee94f05a6e1afa952b213e419599a6cba8529.1695032291.git.lorenzo@kernel.org>
Date: Mon, 18 Sep 2023 12:29:10 +0200
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: netdev@...r.kernel.org
Cc: lorenzo.bianconi@...hat.com,
	nbd@....name,
	john@...ozen.org,
	sean.wang@...iatek.com,
	Mark-MC.Lee@...iatek.com,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	daniel@...rotopia.org,
	linux-mediatek@...ts.infradead.org,
	sujuan.chen@...iatek.com,
	horms@...nel.org,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	devicetree@...r.kernel.org
Subject: [PATCH v2 net-next 08/17] net: ethernet: mtk_wed: make memory region optional

Make mtk_wed_wo_memory_region optionals.
This is a preliminary patch to introduce Wireless Ethernet Dispatcher
support for MT7988 SoC since MT7988 WED fw image will have a different
layout.

Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
 drivers/net/ethernet/mediatek/mtk_wed_mcu.c | 23 ++++++++++++---------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
index cc54fbd7380a..e53531252bd9 100644
--- a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
+++ b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
@@ -234,19 +234,13 @@ int mtk_wed_mcu_msg_update(struct mtk_wed_device *dev, int id, void *data,
 }
 
 static int
-mtk_wed_get_memory_region(struct mtk_wed_wo *wo,
+mtk_wed_get_memory_region(struct mtk_wed_hw *hw, int index,
 			  struct mtk_wed_wo_memory_region *region)
 {
 	struct reserved_mem *rmem;
 	struct device_node *np;
-	int index;
 
-	index = of_property_match_string(wo->hw->node, "memory-region-names",
-					 region->name);
-	if (index < 0)
-		return index;
-
-	np = of_parse_phandle(wo->hw->node, "memory-region", index);
+	np = of_parse_phandle(hw->node, "memory-region", index);
 	if (!np)
 		return -ENODEV;
 
@@ -258,7 +252,7 @@ mtk_wed_get_memory_region(struct mtk_wed_wo *wo,
 
 	region->phy_addr = rmem->base;
 	region->size = rmem->size;
-	region->addr = devm_ioremap(wo->hw->dev, region->phy_addr, region->size);
+	region->addr = devm_ioremap(hw->dev, region->phy_addr, region->size);
 
 	return !region->addr ? -EINVAL : 0;
 }
@@ -271,6 +265,9 @@ mtk_wed_mcu_run_firmware(struct mtk_wed_wo *wo, const struct firmware *fw,
 	const struct mtk_wed_fw_trailer *trailer;
 	const struct mtk_wed_fw_region *fw_region;
 
+	if (!region->phy_addr || !region->size)
+		return 0;
+
 	trailer_ptr = fw->data + fw->size - sizeof(*trailer);
 	trailer = (const struct mtk_wed_fw_trailer *)trailer_ptr;
 	region_ptr = trailer_ptr - trailer->num_region * sizeof(*fw_region);
@@ -318,7 +315,13 @@ mtk_wed_mcu_load_firmware(struct mtk_wed_wo *wo)
 
 	/* load firmware region metadata */
 	for (i = 0; i < ARRAY_SIZE(mem_region); i++) {
-		ret = mtk_wed_get_memory_region(wo, &mem_region[i]);
+		int index = of_property_match_string(wo->hw->node,
+						     "memory-region-names",
+						     mem_region[i].name);
+		if (index < 0)
+			continue;
+
+		ret = mtk_wed_get_memory_region(wo->hw, index, &mem_region[i]);
 		if (ret)
 			return ret;
 	}
-- 
2.41.0