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

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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: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guenter Roeck 2015-04-02 04:06:31 +02:00 committed by David S. Miller
parent b2eb066277
commit d198893e73
2 changed files with 36 additions and 7 deletions
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42
drivers/net/dsa/mv88e6131.c
View File

@ -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);
}

1
drivers/net/dsa/mv88e6xxx.h
View File

@ -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 */