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Subject[PATCH v2 net 2/2] net: dsa: mv88e6xxx: read cmode on mv88e6320/21 serdes only ports
Date
On the mv88e6320 and 6321 switch family, port 0/1 are serdes only ports.
Modified the mv88e6352_get_port4_serdes_cmode function to pass a port
number since the register set of the 6352 is equal on the 6320/21.

Signed-off-by: Steffen Bätz <steffen@innosonix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Fabio Estevam <festevam@gmail.com>

Changes since v1:
- Collected Reviewed-by tags from Andrew and Fabio
---
drivers/net/dsa/mv88e6xxx/chip.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index bd58190853c7..6780e8c36b1f 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -637,12 +637,12 @@ static void mv88e6351_phylink_get_caps(struct mv88e6xxx_chip *chip, int port,
MAC_1000FD;
}

-static int mv88e6352_get_port4_serdes_cmode(struct mv88e6xxx_chip *chip)
+static int mv88e63xx_get_port_serdes_cmode(struct mv88e6xxx_chip *chip, int port)
{
u16 reg, val;
int err;

- err = mv88e6xxx_port_read(chip, 4, MV88E6XXX_PORT_STS, &reg);
+ err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_STS, &reg);
if (err)
return err;

@@ -651,16 +651,16 @@ static int mv88e6352_get_port4_serdes_cmode(struct mv88e6xxx_chip *chip)
return 0xf;

val = reg & ~MV88E6XXX_PORT_STS_PHY_DETECT;
- err = mv88e6xxx_port_write(chip, 4, MV88E6XXX_PORT_STS, val);
+ err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_STS, val);
if (err)
return err;

- err = mv88e6xxx_port_read(chip, 4, MV88E6XXX_PORT_STS, &val);
+ err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_STS, &val);
if (err)
return err;

/* Restore PHY_DETECT value */
- err = mv88e6xxx_port_write(chip, 4, MV88E6XXX_PORT_STS, reg);
+ err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_STS, reg);
if (err)
return err;

@@ -688,7 +688,7 @@ static void mv88e6352_phylink_get_caps(struct mv88e6xxx_chip *chip, int port,
if (err <= 0)
return;

- cmode = mv88e6352_get_port4_serdes_cmode(chip);
+ cmode = mv88e63xx_get_port_serdes_cmode(chip, port);
if (cmode < 0)
dev_err(chip->dev, "p%d: failed to read serdes cmode\n",
port);
@@ -701,12 +701,23 @@ static void mv88e632x_phylink_get_caps(struct mv88e6xxx_chip *chip, int port,
struct phylink_config *config)
{
unsigned long *supported = config->supported_interfaces;
+ int cmode;

/* Translate the default cmode */
mv88e6xxx_translate_cmode(chip->ports[port].cmode, supported);

config->mac_capabilities = MAC_SYM_PAUSE | MAC_10 | MAC_100 |
MAC_1000FD;
+
+ /* Port 0/1 are serdes only ports */
+ if (port == 0 || port == 1) {
+ cmode = mv88e63xx_get_port_serdes_cmode(chip, port);
+ if (cmode < 0)
+ dev_err(chip->dev, "p%d: failed to read serdes cmode\n",
+ port);
+ else
+ mv88e6xxx_translate_cmode(cmode, supported);
+ }
}

static void mv88e6341_phylink_get_caps(struct mv88e6xxx_chip *chip, int port,
--
2.34.1

--


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