From ca070c1097eb647e87619af5037d8a8a53a3248b Mon Sep 17 00:00:00 2001 From: Vivien Didelot Date: Fri, 2 Sep 2016 14:45:34 -0400 Subject: net: dsa: mv88e6xxx: make global2 code optional Since not every chip has a Global2 set of registers, make its support optional, in which case the related functions will return -EOPNOTSUPP. This also allows to reduce the size of the mv88e6xxx driver for devices such as home routers embedding Ethernet chips without Global2 support. It is present on most recent chips, thus enable its support by default. Signed-off-by: Vivien Didelot Signed-off-by: David S. Miller --- drivers/net/dsa/mv88e6xxx/global2.h | 58 +++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) (limited to 'drivers/net/dsa/mv88e6xxx/global2.h') diff --git a/drivers/net/dsa/mv88e6xxx/global2.h b/drivers/net/dsa/mv88e6xxx/global2.h index bee1bc9..c4bb903 100644 --- a/drivers/net/dsa/mv88e6xxx/global2.h +++ b/drivers/net/dsa/mv88e6xxx/global2.h @@ -16,6 +16,13 @@ #include "mv88e6xxx.h" +#ifdef CONFIG_NET_DSA_MV88E6XXX_GLOBAL2 + +static inline int mv88e6xxx_g2_require(struct mv88e6xxx_chip *chip) +{ + return 0; +} + int mv88e6xxx_g2_smi_phy_read(struct mv88e6xxx_chip *chip, int addr, int reg, u16 *val); int mv88e6xxx_g2_smi_phy_write(struct mv88e6xxx_chip *chip, int addr, int reg, @@ -27,4 +34,55 @@ int mv88e6xxx_g2_set_eeprom16(struct mv88e6xxx_chip *chip, struct ethtool_eeprom *eeprom, u8 *data); int mv88e6xxx_g2_setup(struct mv88e6xxx_chip *chip); +#else /* !CONFIG_NET_DSA_MV88E6XXX_GLOBAL2 */ + +static inline int mv88e6xxx_g2_require(struct mv88e6xxx_chip *chip) +{ + if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_GLOBAL2)) { + dev_err(chip->dev, "this chip requires CONFIG_NET_DSA_MV88E6XXX_GLOBAL2 enabled\n"); + return -EOPNOTSUPP; + } + + return 0; +} + +static inline int mv88e6xxx_g2_smi_phy_read(struct mv88e6xxx_chip *chip, + int addr, int reg, u16 *val) +{ + return -EOPNOTSUPP; +} + +static inline int mv88e6xxx_g2_smi_phy_write(struct mv88e6xxx_chip *chip, + int addr, int reg, u16 val) +{ + return -EOPNOTSUPP; +} + +static inline int mv88e6xxx_g2_set_switch_mac(struct mv88e6xxx_chip *chip, + u8 *addr) +{ + return -EOPNOTSUPP; +} + +static inline int mv88e6xxx_g2_get_eeprom16(struct mv88e6xxx_chip *chip, + struct ethtool_eeprom *eeprom, + u8 *data) +{ + return -EOPNOTSUPP; +} + +static inline int mv88e6xxx_g2_set_eeprom16(struct mv88e6xxx_chip *chip, + struct ethtool_eeprom *eeprom, + u8 *data) +{ + return -EOPNOTSUPP; +} + +static inline int mv88e6xxx_g2_setup(struct mv88e6xxx_chip *chip) +{ + return -EOPNOTSUPP; +} + +#endif /* CONFIG_NET_DSA_MV88E6XXX_GLOBAL2 */ + #endif /* _MV88E6XXX_GLOBAL2_H */ -- cgit v1.1