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authorGuenter Roeck <linux@roeck-us.net>2015-03-06 22:23:51 -0800
committerDavid S. Miller <davem@davemloft.net>2015-03-07 22:34:10 -0500
commit11b3b45d69f1709aae6bb48b214064e22f0b5ef7 (patch)
treeebf2a6f9f6b76520bbcbe58d614e11e33d592adf /drivers/net/dsa
parent6f5a272c99108d9f8450c454a4baede9e7cc643f (diff)
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net: dsa: mv88e6xxx: Add EEE support
EEE configuration is similar for the various MV88E6xxx chips. Add generic support for it. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa')
-rw-r--r--drivers/net/dsa/mv88e6xxx.c51
-rw-r--r--drivers/net/dsa/mv88e6xxx.h3
2 files changed, 54 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index a83ace0803e7..c18ffc98aacc 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -649,6 +649,57 @@ int mv88e6xxx_phy_write_indirect(struct dsa_switch *ds, int addr, int regnum,
return mv88e6xxx_phy_wait(ds);
}
+int mv88e6xxx_get_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
+{
+ int reg;
+
+ reg = mv88e6xxx_phy_read_indirect(ds, port, 16);
+ if (reg < 0)
+ return -EOPNOTSUPP;
+
+ e->eee_enabled = !!(reg & 0x0200);
+ e->tx_lpi_enabled = !!(reg & 0x0100);
+
+ reg = REG_READ(REG_PORT(port), 0);
+ e->eee_active = !!(reg & 0x0040);
+
+ return 0;
+}
+
+static int mv88e6xxx_eee_enable_set(struct dsa_switch *ds, int port,
+ bool eee_enabled, bool tx_lpi_enabled)
+{
+ int reg, nreg;
+
+ reg = mv88e6xxx_phy_read_indirect(ds, port, 16);
+ if (reg < 0)
+ return reg;
+
+ nreg = reg & ~0x0300;
+ if (eee_enabled)
+ nreg |= 0x0200;
+ if (tx_lpi_enabled)
+ nreg |= 0x0100;
+
+ if (nreg != reg)
+ return mv88e6xxx_phy_write_indirect(ds, port, 16, nreg);
+
+ return 0;
+}
+
+int mv88e6xxx_set_eee(struct dsa_switch *ds, int port,
+ struct phy_device *phydev, struct ethtool_eee *e)
+{
+ int ret;
+
+ ret = mv88e6xxx_eee_enable_set(ds, port, e->eee_enabled,
+ e->tx_lpi_enabled);
+ if (ret)
+ return -EOPNOTSUPP;
+
+ return 0;
+}
+
static int __init mv88e6xxx_init(void)
{
#if IS_ENABLED(CONFIG_NET_DSA_MV88E6131)
diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h
index 72942271bb67..5fd42ced9011 100644
--- a/drivers/net/dsa/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx.h
@@ -88,6 +88,9 @@ int mv88e6xxx_eeprom_busy_wait(struct dsa_switch *ds);
int mv88e6xxx_phy_read_indirect(struct dsa_switch *ds, int addr, int regnum);
int mv88e6xxx_phy_write_indirect(struct dsa_switch *ds, int addr, int regnum,
u16 val);
+int mv88e6xxx_get_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e);
+int mv88e6xxx_set_eee(struct dsa_switch *ds, int port,
+ struct phy_device *phydev, struct ethtool_eee *e);
extern struct dsa_switch_driver mv88e6131_switch_driver;
extern struct dsa_switch_driver mv88e6123_61_65_switch_driver;