54 lines
1.6 KiB
Diff
54 lines
1.6 KiB
Diff
From c6af53f038aa32cec12e8a305ba07c7ef168f1b0 Mon Sep 17 00:00:00 2001
|
|
From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
|
|
Date: Tue, 4 Jan 2022 12:07:00 +0000
|
|
Subject: [PATCH 2/3] net: mdio: add helpers to extract clause 45 regad and
|
|
devad fields
|
|
|
|
Add a couple of helpers and definitions to extract the clause 45 regad
|
|
and devad fields from the regnum passed into MDIO drivers.
|
|
|
|
Tested-by: Daniel Golle <daniel@makrotopia.org>
|
|
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
|
|
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
|
|
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
---
|
|
include/linux/mdio.h | 12 ++++++++++++
|
|
1 file changed, 12 insertions(+)
|
|
|
|
--- a/include/linux/mdio.h
|
|
+++ b/include/linux/mdio.h
|
|
@@ -7,6 +7,7 @@
|
|
#define __LINUX_MDIO_H__
|
|
|
|
#include <uapi/linux/mdio.h>
|
|
+#include <linux/bitfield.h>
|
|
#include <linux/mod_devicetable.h>
|
|
|
|
/* Or MII_ADDR_C45 into regnum for read/write on mii_bus to enable the 21 bit
|
|
@@ -14,6 +15,7 @@
|
|
*/
|
|
#define MII_ADDR_C45 (1<<30)
|
|
#define MII_DEVADDR_C45_SHIFT 16
|
|
+#define MII_DEVADDR_C45_MASK GENMASK(20, 16)
|
|
#define MII_REGADDR_C45_MASK GENMASK(15, 0)
|
|
|
|
struct gpio_desc;
|
|
@@ -355,6 +357,16 @@ static inline u32 mdiobus_c45_addr(int d
|
|
return MII_ADDR_C45 | devad << MII_DEVADDR_C45_SHIFT | regnum;
|
|
}
|
|
|
|
+static inline u16 mdiobus_c45_regad(u32 regnum)
|
|
+{
|
|
+ return FIELD_GET(MII_REGADDR_C45_MASK, regnum);
|
|
+}
|
|
+
|
|
+static inline u16 mdiobus_c45_devad(u32 regnum)
|
|
+{
|
|
+ return FIELD_GET(MII_DEVADDR_C45_MASK, regnum);
|
|
+}
|
|
+
|
|
static inline int __mdiobus_c45_read(struct mii_bus *bus, int prtad, int devad,
|
|
u16 regnum)
|
|
{
|