diff options
| author | Andrew Lunn <andrew@lunn.ch> | 2018-08-09 15:38:41 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-08-09 11:08:20 -0700 |
| commit | 07ffbd74d1786d13a4f3a6bc01400ea59e8b19c0 (patch) | |
| tree | ec91b8129811e3e997a270b801dde49f5209f7fb /drivers/net/dsa/mv88e6xxx/serdes.c | |
| parent | a8c01c0d941d2f220a5a31ded77a67d89ddec3b0 (diff) | |
| download | blackbird-op-linux-07ffbd74d1786d13a4f3a6bc01400ea59e8b19c0.tar.gz blackbird-op-linux-07ffbd74d1786d13a4f3a6bc01400ea59e8b19c0.zip | |
net: dsa: mv88e6xxx: 6390 vs 6390X SERDES support
The 6390 has two SERDES interfaces, used by ports 9 and 10. The 6390X
has eight SERDES interfaces. These allow ports 9 and 10 to do 10G. Or
if lower speeds are used, some of the SERDES interfaces can be used by
ports 2-8 for 1000Base-X.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/serdes.c')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/serdes.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c index a218870971fe..c534749fb1b6 100644 --- a/drivers/net/dsa/mv88e6xxx/serdes.c +++ b/drivers/net/dsa/mv88e6xxx/serdes.c @@ -174,11 +174,41 @@ int mv88e6352_serdes_get_stats(struct mv88e6xxx_chip *chip, int port, return ARRAY_SIZE(mv88e6352_serdes_hw_stats); } +/* Return the SERDES lane address a port is using. Only Ports 9 and 10 + * have SERDES lanes. Returns -ENODEV if a port does not have a lane. + */ +static int mv88e6390_serdes_get_lane(struct mv88e6xxx_chip *chip, int port) +{ + u8 cmode; + int err; + + err = mv88e6xxx_port_get_cmode(chip, port, &cmode); + if (err) + return err; + + switch (port) { + case 9: + if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASE_X || + cmode == MV88E6XXX_PORT_STS_CMODE_SGMII || + cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX) + return MV88E6390_PORT9_LANE0; + return -ENODEV; + case 10: + if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASE_X || + cmode == MV88E6XXX_PORT_STS_CMODE_SGMII || + cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX) + return MV88E6390_PORT10_LANE0; + return -ENODEV; + default: + return -ENODEV; + } +} + /* Return the SERDES lane address a port is using. Ports 9 and 10 can * use multiple lanes. If so, return the first lane the port uses. * Returns -ENODEV if a port does not have a lane. */ -static int mv88e6390_serdes_get_lane(struct mv88e6xxx_chip *chip, int port) +static int mv88e6390x_serdes_get_lane(struct mv88e6xxx_chip *chip, int port) { u8 cmode_port9, cmode_port10, cmode_port; int err; @@ -351,6 +381,25 @@ int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on) return lane; switch (port) { + case 9 ... 10: + return mv88e6390_serdes_power_lane(chip, port, lane, on); + } + + return 0; +} + +int mv88e6390x_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on) +{ + int lane; + + lane = mv88e6390x_serdes_get_lane(chip, port); + if (lane == -ENODEV) + return 0; + + if (lane < 0) + return lane; + + switch (port) { case 2 ... 4: case 5 ... 7: case 9 ... 10: |
