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net: dsa: mv88e6171: Add support for reading the temperature

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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>
This commit is contained in:
Andrew Lunn 2014-11-15 22:24:52 +01:00 committed by David S. Miller
parent eaa237657b
commit 4dd38cdb42
1 changed files with 17 additions and 2 deletions
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19
drivers/net/dsa/mv88e6171.c
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@ -316,6 +316,8 @@ static int mv88e6171_setup(struct dsa_switch *ds)
return ret;
}
mutex_init(&ps->phy_mutex);
return 0;
}
@ -329,18 +331,28 @@ static int mv88e6171_port_to_phy_addr(int port)
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 @@ struct dsa_switch_driver mv88e6171_switch_driver = {
.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");