diff options
| author |   Andrew Lunn <andrew@lunn.ch> | 2018-08-09 15:38:37 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-08-09 11:08:19 -0700 |
| commit | 54186b91bde1711080d0b23ce25f0bee5a058fc9 (patch) | |
| tree | ae6b23679f30ff4f141c42b77d76e1557d9463f0 /drivers/net/dsa/mv88e6xxx/port.c | |
| parent | Merge branch 'mlxsw-Various-updates' (diff) | |
| download | linux-dev-54186b91bde1711080d0b23ce25f0bee5a058fc9.tar.xz linux-dev-54186b91bde1711080d0b23ce25f0bee5a058fc9.zip | |
net: dsa: mv88e6xxx: Add support to enabling pause
The 6185 can enable/disable 802.3z pause be setting the MyPause bit in
the port status register. Add an op to support this.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/port.c')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/port.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c index 429d0ebcd5b1..c0701deaca6a 100644 --- a/drivers/net/dsa/mv88e6xxx/port.c +++ b/drivers/net/dsa/mv88e6xxx/port.c @@ -36,6 +36,29 @@ int mv88e6xxx_port_write(struct mv88e6xxx_chip *chip, int port, int reg, return mv88e6xxx_write(chip, addr, reg, val); } +/* Offset 0x00: MAC (or PCS or Physical) Status Register + * + * For most devices, this is read only. However the 6185 has the MyPause + * bit read/write. + */ +int mv88e6185_port_set_pause(struct mv88e6xxx_chip *chip, int port, + int pause) +{ + u16 reg; + int err; + + err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_STS, ®); + if (err) + return err; + + if (pause) + reg |= MV88E6XXX_PORT_STS_MY_PAUSE; + else + reg &= ~MV88E6XXX_PORT_STS_MY_PAUSE; + + return mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_STS, reg); +} + /* Offset 0x01: MAC (or PCS or Physical) Control Register * * Link, Duplex and Flow Control have one force bit, one value bit. |