[OpenWrt-Devel] [PATCH 1/3] b53: add b53_mac_array_to_u64() utility function

[Alexandru Ardelean]

From: Alexandru Ardelean <ardeleanalex at gmail.com>

Converts an MAC array of u8 to a u64 value.

Signed-off-by: Alexandru Ardelean <ardeleanalex at gmail.com>
---
 target/linux/generic/files/drivers/net/phy/b53/b53_regs.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/target/linux/generic/files/drivers/net/phy/b53/b53_regs.h b/target/linux/generic/files/drivers/net/phy/b53/b53_regs.h
index ba50915..4379c58 100644
--- a/target/linux/generic/files/drivers/net/phy/b53/b53_regs.h
+++ b/target/linux/generic/files/drivers/net/phy/b53/b53_regs.h
@@ -20,6 +20,16 @@
 #ifndef __B53_REGS_H
 #define __B53_REGS_H
 
+/* Utility function for converting u8 arrays into u64 values to be written with b53_write */
+static inline u64 b53_mac_array_to_u64(const u8 *u8_arr) {
+	u64 mac = (*(const u64 *)u8_arr);
+#ifdef __BIG_ENDIAN
+	return (mac >> 16);
+#else
+	return (mac << 16);
+#endif
+}
+
 /* Management Port (SMP) Page offsets */
 #define B53_CTRL_PAGE			0x00 /* Control */
 #define B53_STAT_PAGE			0x01 /* Status */
-- 
2.1.2
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