net: dsa: mv88e6xxx: prefix Port Based VLAN macros

For implicit namespacing and clarity, prefix the common Port Based VLAN
Register macros with MV88E6XXX_PORT_BASE_VLAN.

Document the register and prefer ordered hex masks values for all
Marvell 16-bit registers.
Signed-off-by: NVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/dsa/mv88e6xxx/port.c

@@ -615,14 +615,14 @@ int mv88e6xxx_port_set_vlan_map(struct mv88e6xxx_chip *chip, int port, u16 map)
 	u16 reg;
 	int err;
 
-	err = mv88e6xxx_port_read(chip, port, PORT_BASE_VLAN, &reg);
+	err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_BASE_VLAN, &reg);
 	if (err)
 		return err;
 
 	reg &= ~mask;
 	reg |= map & mask;
 
-	err = mv88e6xxx_port_write(chip, port, PORT_BASE_VLAN, reg);
+	err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_BASE_VLAN, reg);
 	if (err)
 		return err;
 
@@ -638,7 +638,7 @@ int mv88e6xxx_port_get_fid(struct mv88e6xxx_chip *chip, int port, u16 *fid)
 	int err;
 
 	/* Port's default FID lower 4 bits are located in reg 0x06, offset 12 */
-	err = mv88e6xxx_port_read(chip, port, PORT_BASE_VLAN, &reg);
+	err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_BASE_VLAN, &reg);
 	if (err)
 		return err;
 
@@ -667,14 +667,14 @@ int mv88e6xxx_port_set_fid(struct mv88e6xxx_chip *chip, int port, u16 fid)
 		return -EINVAL;
 
 	/* Port's default FID lower 4 bits are located in reg 0x06, offset 12 */
-	err = mv88e6xxx_port_read(chip, port, PORT_BASE_VLAN, &reg);
+	err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_BASE_VLAN, &reg);
 	if (err)
 		return err;
 
 	reg &= 0x0fff;
 	reg |= (fid & 0x000f) << 12;
 
-	err = mv88e6xxx_port_write(chip, port, PORT_BASE_VLAN, reg);
+	err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_BASE_VLAN, reg);
 	if (err)
 		return err;
 

drivers/net/dsa/mv88e6xxx/port.h

@@ -146,8 +146,10 @@
 #define MV88E6XXX_PORT_CTL1_MESSAGE_PORT	0x8000
 #define MV88E6XXX_PORT_CTL1_FID_11_4_MASK	0x00ff
 
-#define PORT_BASE_VLAN		0x06
-#define PORT_BASE_VLAN_FID_3_0_MASK	(0xf << 12)
+/* Offset 0x06: Port Based VLAN Map */
+#define MV88E6XXX_PORT_BASE_VLAN		0x06
+#define MV88E6XXX_PORT_BASE_VLAN_FID_3_0_MASK	0xf000
+
 #define PORT_DEFAULT_VLAN	0x07
 #define PORT_DEFAULT_VLAN_MASK	0xfff
 #define PORT_CONTROL_2		0x08