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Subject[PATCH net-next 2/5] net: dsa: mv88e6xxx: helper to setup upstream port
Date
Add a helper function to setup the upstream port of a given port.

This is the port used to reach the dedicated CPU port. This function
will be extended later to setup the global upstream port as well.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
---
drivers/net/dsa/mv88e6xxx/chip.c | 26 +++++++++++++++++++-------
1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 15475dbb738b..3dce1ab19582 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1743,6 +1743,22 @@ static int mv88e6xxx_serdes_power(struct mv88e6xxx_chip *chip, int port,
return 0;
}

+static int mv88e6xxx_setup_upstream_port(struct mv88e6xxx_chip *chip, int port)
+{
+ struct dsa_switch *ds = chip->ds;
+ int upstream_port = dsa_upstream_port(ds);
+ int err;
+
+ if (chip->info->ops->port_set_upstream_port) {
+ err = chip->info->ops->port_set_upstream_port(chip, port,
+ upstream_port);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
{
struct dsa_switch *ds = chip->ds;
@@ -1813,13 +1829,9 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
if (err)
return err;

- reg = 0;
- if (chip->info->ops->port_set_upstream_port) {
- err = chip->info->ops->port_set_upstream_port(
- chip, port, dsa_upstream_port(ds));
- if (err)
- return err;
- }
+ err = mv88e6xxx_setup_upstream_port(chip, port);
+ if (err)
+ return err;

err = mv88e6xxx_port_set_8021q_mode(chip, port,
MV88E6XXX_PORT_CTL2_8021Q_MODE_DISABLED);
--
2.15.1
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