add stmac read mac form eeprom

hc

2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/net/wireless/mediatek/mt76/eeprom.c
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@@ -1,17 +1,6 @@
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+// SPDX-License-Identifier: ISC
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 /*
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  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
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- *
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- * Permission to use, copy, modify, and/or distribute this software for any
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- * purpose with or without fee is hereby granted, provided that the above
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- * copyright notice and this permission notice appear in all copies.
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- *
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- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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  */
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 #include <linux/of.h>
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 #include <linux/of_net.h>
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@@ -75,6 +64,21 @@
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 		goto out_put_node;
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 	}
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+	if (of_property_read_bool(dev->dev->of_node, "big-endian")) {
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+		u8 *data = (u8 *)dev->eeprom.data;
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+		int i;
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+
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+		/* convert eeprom data in Little Endian */
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+		for (i = 0; i < round_down(len, 2); i += 2)
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+			put_unaligned_le16(get_unaligned_be16(&data[i]),
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+					   &data[i]);
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+	}
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+
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+#ifdef CONFIG_NL80211_TESTMODE
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+	dev->test.mtd_name = devm_kstrdup(dev->dev, part, GFP_KERNEL);
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+	dev->test.mtd_offset = offset;
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+#endif
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+
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 out_put_node:
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 	of_node_put(np);
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 	return ret;
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@@ -88,14 +92,12 @@
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 {
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 #ifdef CONFIG_OF
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 	struct device_node *np = dev->dev->of_node;
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-	const u8 *mac;
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+	const u8 *mac = NULL;
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-	if (!np)
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-		return;
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-
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-	mac = of_get_mac_address(np);
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-	if (mac)
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-		memcpy(dev->macaddr, mac, ETH_ALEN);
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+	if (np)
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+		mac = of_get_mac_address(np);
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+	if (!IS_ERR_OR_NULL(mac))
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+		ether_addr_copy(dev->macaddr, mac);
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 #endif
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 	if (!is_valid_ether_addr(dev->macaddr)) {