Commit d198893e authored by Guenter Roeck's avatar Guenter Roeck Committed by David S. Miller
Browse files

net: dsa: mv88e6131: Determine and use number of switch ports 



Determine and use number of switch ports from chip ID instead of always
using the maximum, and return error when an attempt is made to access a
non-existing port.

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b2eb0662

drivers/net/dsa/mv88e6131.c

+35 −7
Original line number Diff line number Diff line
@@ -44,12 +44,13 @@ static char *mv88e6131_probe(struct device *host_dev, int sw_addr) 


static int mv88e6131_switch_reset(struct dsa_switch *ds)

{

	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);

	int i;

	int ret;

	unsigned long timeout;



	/* Set all ports to the disabled state. */

	for (i = 0; i < 11; i++) {

	for (i = 0; i < ps->num_ports; i++) {

		ret = REG_READ(REG_PORT(i), 0x04);

		REG_WRITE(REG_PORT(i), 0x04, ret & 0xfffc);

	}
@@ -255,6 +256,7 @@ static int mv88e6131_setup_port(struct dsa_switch *ds, int p) 


static int mv88e6131_setup(struct dsa_switch *ds)

{

	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);

	int i;

	int ret;
@@ -264,6 +266,21 @@ static int mv88e6131_setup(struct dsa_switch *ds) 


	mv88e6xxx_ppu_state_init(ds);



	switch (ps->id) {

	case ID_6085:

		ps->num_ports = 10;

		break;

	case ID_6095:

		ps->num_ports = 11;

		break;

	case ID_6131:

	case ID_6131_B2:

		ps->num_ports = 8;

		break;

	default:

		return -ENODEV;

	}



	ret = mv88e6131_switch_reset(ds);

	if (ret < 0)

		return ret;
@@ -274,7 +291,7 @@ static int mv88e6131_setup(struct dsa_switch *ds) 
	if (ret < 0)

		return ret;



	for (i = 0; i < 11; i++) {

	for (i = 0; i < ps->num_ports; i++) {

		ret = mv88e6131_setup_port(ds, i);

		if (ret < 0)

			return ret;
@@ -283,17 +300,24 @@ static int mv88e6131_setup(struct dsa_switch *ds) 
	return 0;

}



static int mv88e6131_port_to_phy_addr(int port)

static int mv88e6131_port_to_phy_addr(struct dsa_switch *ds, int port)

{

	if (port >= 0 && port <= 11)

	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);



	if (port >= 0 && port < ps->num_ports)

		return port;

	return -1;



	return -EINVAL;

}



static int

mv88e6131_phy_read(struct dsa_switch *ds, int port, int regnum)

{

	int addr = mv88e6131_port_to_phy_addr(port);

	int addr = mv88e6131_port_to_phy_addr(ds, port);



	if (addr < 0)

		return addr;



	return mv88e6xxx_phy_read_ppu(ds, addr, regnum);

}
@@ -301,7 +325,11 @@ static int 
mv88e6131_phy_write(struct dsa_switch *ds,

			      int port, int regnum, u16 val)

{

	int addr = mv88e6131_port_to_phy_addr(port);

	int addr = mv88e6131_port_to_phy_addr(ds, port);



	if (addr < 0)

		return addr;



	return mv88e6xxx_phy_write_ppu(ds, addr, regnum, val);

}

drivers/net/dsa/mv88e6xxx.h

+1 −0
Original line number Diff line number Diff line
@@ -109,6 +109,7 @@ struct mv88e6xxx_priv_state { 
	struct mutex eeprom_mutex;



	int		id; /* switch product id */

	int		num_ports;	/* number of switch ports */



	/* hw bridging */