net: dsa: mv88e6xxx: prefix Port Default VLAN macros

For implicit namespacing and clarity, prefix the common Port Default
VLAN Register macros with MV88E6XXX_PORT_DEFAULT_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/chip.c

@@ -1950,7 +1950,7 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
 	/* Default VLAN ID and priority: don't set a default VLAN
 	 * ID, and set the default packet priority to zero.
 	 */
-	return mv88e6xxx_port_write(chip, port, PORT_DEFAULT_VLAN, 0x0000);
+	return mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_DEFAULT_VLAN, 0);
 }
 
 static int mv88e6xxx_port_enable(struct dsa_switch *ds, int port,

drivers/net/dsa/mv88e6xxx/port.c

@@ -706,11 +706,12 @@ int mv88e6xxx_port_get_pvid(struct mv88e6xxx_chip *chip, int port, u16 *pvid)
 	u16 reg;
 	int err;
 
-	err = mv88e6xxx_port_read(chip, port, PORT_DEFAULT_VLAN, &reg);
+	err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_DEFAULT_VLAN,
+				  &reg);
 	if (err)
 		return err;
 
-	*pvid = reg & PORT_DEFAULT_VLAN_MASK;
+	*pvid = reg & MV88E6XXX_PORT_DEFAULT_VLAN_MASK;
 
 	return 0;
 }
@@ -720,14 +721,16 @@ int mv88e6xxx_port_set_pvid(struct mv88e6xxx_chip *chip, int port, u16 pvid)
 	u16 reg;
 	int err;
 
-	err = mv88e6xxx_port_read(chip, port, PORT_DEFAULT_VLAN, &reg);
+	err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_DEFAULT_VLAN,
+				  &reg);
 	if (err)
 		return err;
 
-	reg &= ~PORT_DEFAULT_VLAN_MASK;
-	reg |= pvid & PORT_DEFAULT_VLAN_MASK;
+	reg &= ~MV88E6XXX_PORT_DEFAULT_VLAN_MASK;
+	reg |= pvid & MV88E6XXX_PORT_DEFAULT_VLAN_MASK;
 
-	err = mv88e6xxx_port_write(chip, port, PORT_DEFAULT_VLAN, reg);
+	err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_DEFAULT_VLAN,
+				   reg);
 	if (err)
 		return err;
 

drivers/net/dsa/mv88e6xxx/port.h

@@ -150,8 +150,10 @@
 #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
+/* Offset 0x07: Default Port VLAN ID & Priority */
+#define MV88E6XXX_PORT_DEFAULT_VLAN		0x07
+#define MV88E6XXX_PORT_DEFAULT_VLAN_MASK	0x0fff
+
 #define PORT_CONTROL_2		0x08
 #define PORT_CONTROL_2_IGNORE_FCS	BIT(15)
 #define PORT_CONTROL_2_VTU_PRI_OVERRIDE	BIT(14)