@@ -879,6 +879,16 @@ error:
return ret;
}
+static int mv88e6xxx_get_eeprom_len(struct dsa_switch *ds)
+{
+ struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+
+ if (mv88e6xxx_has(ps, MV88E6XXX_FLAG_EEPROM))
+ return ps->eeprom_len;
+
+ return 0;
+}
+
static int mv88e6xxx_get_eeprom(struct dsa_switch *ds,
struct ethtool_eeprom *eeprom, u8 *data)
{
@@ -3596,6 +3606,7 @@ struct dsa_switch_driver mv88e6xxx_switch_driver = {
.set_temp_limit = mv88e6xxx_set_temp_limit,
.get_temp_alarm = mv88e6xxx_get_temp_alarm,
#endif
+ .get_eeprom_len = mv88e6xxx_get_eeprom_len,
.get_eeprom = mv88e6xxx_get_eeprom,
.set_eeprom = mv88e6xxx_set_eeprom,
.get_regs_len = mv88e6xxx_get_regs_len,
@@ -3617,9 +3628,11 @@ struct dsa_switch_driver mv88e6xxx_switch_driver = {
int mv88e6xxx_probe(struct mdio_device *mdiodev)
{
struct device *dev = &mdiodev->dev;
+ struct device_node *np = dev->of_node;
struct mv88e6xxx_priv_state *ps;
int id, prod_num, rev;
struct dsa_switch *ds;
+ u32 eeprom_len;
int err;
ds = devm_kzalloc(dev, sizeof(*ds) + sizeof(*ps), GFP_KERNEL);
@@ -3662,6 +3675,10 @@ int mv88e6xxx_probe(struct mdio_device *mdiodev)
}
}
+ if (mv88e6xxx_has(ps, MV88E6XXX_FLAG_EEPROM) &&
+ !of_property_read_u32(np, "eeprom-length", &eeprom_len))
+ ps->eeprom_len = eeprom_len;
+
dev_set_drvdata(dev, ds);
dev_info(dev, "switch 0x%x probed: %s, revision %u\n",
@@ -590,6 +590,9 @@ struct mv88e6xxx_priv_state {
* switch soft reset.
*/
struct gpio_desc *reset;
+
+ /* set to size of eeprom if supported by the switch */
+ int eeprom_len;
};
enum stat_type {
A switch can export an attached EEPROM using the standard ethtool API. However the switch itself cannot determine the size of the EEPROM, and multiple sizes are allowed. Thus a device tree property is supported to indicate the length of the EEPROM. Parse this property during device probe, and implement a callback function to retrieve it. Signed-off-by: Andrew Lunn <andrew@lunn.ch> --- drivers/net/dsa/mv88e6xxx.c | 17 +++++++++++++++++ drivers/net/dsa/mv88e6xxx.h | 3 +++ 2 files changed, 20 insertions(+)