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Commit 4dd38cdb authored by Andrew Lunn's avatar Andrew Lunn Committed by David S. Miller
Browse files

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: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent eaa23765

drivers/net/dsa/mv88e6171.c

+17 −2
Original line number Diff line number Diff line
@@ -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");