diff options
| author | Vivien Didelot <vivien.didelot@savoirfairelinux.com> | 2016-11-04 03:23:33 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-04 14:40:00 -0400 |
| commit | 7f1ae07b51e8b617922b2b73850361eafa17a684 (patch) | |
| tree | 54d9b6ab21965a003b5fd47704bff7383bf40c9b /drivers/net/dsa/mv88e6xxx/port.c | |
| parent | 08ef7f1022e85539d5e3ce925e1fab60b205ae39 (diff) | |
net: dsa: mv88e6xxx: add port duplex setter
Similarly to port's link, add setter to force port's half duplex, full
duplex or let normal duplex detection occurs.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
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 | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c index 09e25f975b25..17b54441b0e9 100644 --- a/drivers/net/dsa/mv88e6xxx/port.c +++ b/drivers/net/dsa/mv88e6xxx/port.c @@ -71,6 +71,42 @@ int mv88e6xxx_port_set_link(struct mv88e6xxx_chip *chip, int port, int link) return 0; } +int mv88e6xxx_port_set_duplex(struct mv88e6xxx_chip *chip, int port, int dup) +{ + u16 reg; + int err; + + err = mv88e6xxx_port_read(chip, port, PORT_PCS_CTRL, ®); + if (err) + return err; + + reg &= ~(PORT_PCS_CTRL_FORCE_DUPLEX | PORT_PCS_CTRL_DUPLEX_FULL); + + switch (dup) { + case DUPLEX_HALF: + reg |= PORT_PCS_CTRL_FORCE_DUPLEX; + break; + case DUPLEX_FULL: + reg |= PORT_PCS_CTRL_FORCE_DUPLEX | PORT_PCS_CTRL_DUPLEX_FULL; + break; + case DUPLEX_UNFORCED: + /* normal duplex detection */ + break; + default: + return -EINVAL; + } + + err = mv88e6xxx_port_write(chip, port, PORT_PCS_CTRL, reg); + if (err) + return err; + + netdev_dbg(chip->ds->ports[port].netdev, "%s %s duplex\n", + reg & PORT_PCS_CTRL_FORCE_DUPLEX ? "Force" : "Unforce", + reg & PORT_PCS_CTRL_DUPLEX_FULL ? "full" : "half"); + + return 0; +} + /* Offset 0x04: Port Control Register */ static const char * const mv88e6xxx_port_state_names[] = { |