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net: dsa: mv88e6xxx: add port mask helper 

Add a mv88e6xxx_port_mask() helper to get the bitmask of ports in a
switch chip, that will be used in several features.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2017-03-11 16:12:47 -05:00 committed by David S. Miller
parent 0f230ca940
commit 4d294af2cd
2 changed files with 6 additions and 1 deletions
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5
drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
View File

@ -944,6 +944,11 @@ static inline unsigned int mv88e6xxx_num_ports(struct mv88e6xxx_chip *chip)
return chip->info->num_ports;
}
static inline u16 mv88e6xxx_port_mask(struct mv88e6xxx_chip *chip)
{
return GENMASK(mv88e6xxx_num_ports(chip) - 1, 0);
}
int mv88e6xxx_read(struct mv88e6xxx_chip *chip, int addr, int reg, u16 *val);
int mv88e6xxx_write(struct mv88e6xxx_chip *chip, int addr, int reg, u16 val);
int mv88e6xxx_update(struct mv88e6xxx_chip *chip, int addr, int reg,

2
drivers/net/dsa/mv88e6xxx/port.c
View File

@ -539,7 +539,7 @@ int mv88e6351_port_set_egress_unknowns(struct mv88e6xxx_chip *chip, int port,
int mv88e6xxx_port_set_vlan_map(struct mv88e6xxx_chip *chip, int port, u16 map)
{
const u16 mask = GENMASK(mv88e6xxx_num_ports(chip) - 1, 0);
const u16 mask = mv88e6xxx_port_mask(chip);
u16 reg;
int err;