net: dsa: mv88e6171: Add support for reading the temperature
This chip also has a temperature sensor which can be read using the
common code. In order to use it, add the needed mutex protection for
accessing registers via the shared code.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/dsa/mv88e6171.c b/drivers/net/dsa/mv88e6171.c
index 537eeed..ed4c797 100644
--- a/drivers/net/dsa/mv88e6171.c
+++ b/drivers/net/dsa/mv88e6171.c
@@ -316,6 +316,8 @@
return ret;
}
+ mutex_init(&ps->phy_mutex);
+
return 0;
}
@@ -329,18 +331,28 @@
static int
mv88e6171_phy_read(struct dsa_switch *ds, int port, int regnum)
{
+ struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int addr = mv88e6171_port_to_phy_addr(port);
+ int ret;
- return mv88e6xxx_phy_read(ds, addr, regnum);
+ mutex_lock(&ps->phy_mutex);
+ ret = mv88e6xxx_phy_read(ds, addr, regnum);
+ mutex_unlock(&ps->phy_mutex);
+ return ret;
}
static int
mv88e6171_phy_write(struct dsa_switch *ds,
int port, int regnum, u16 val)
{
+ struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int addr = mv88e6171_port_to_phy_addr(port);
+ int ret;
- return mv88e6xxx_phy_write(ds, addr, regnum, val);
+ mutex_lock(&ps->phy_mutex);
+ ret = mv88e6xxx_phy_write(ds, addr, regnum, val);
+ mutex_unlock(&ps->phy_mutex);
+ return ret;
}
static struct mv88e6xxx_hw_stat mv88e6171_hw_stats[] = {
@@ -408,6 +420,9 @@
.get_strings = mv88e6171_get_strings,
.get_ethtool_stats = mv88e6171_get_ethtool_stats,
.get_sset_count = mv88e6171_get_sset_count,
+#ifdef CONFIG_NET_DSA_HWMON
+ .get_temp = mv88e6xxx_get_temp,
+#endif
};
MODULE_ALIAS("platform:mv88e6171");