UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

dsa: mv88e6xxx: Handle eeprom-length property 

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2016-05-10 23:27:25 +02:00 committed by David S. Miller
parent ff04955c2f
commit f8cd8753de
2 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/dsa/mv88e6xxx.c
View File

@ -869,6 +869,16 @@ 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)
{
@ -3610,6 +3620,7 @@ 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,
@ -3631,9 +3642,11 @@ 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);
@ -3676,6 +3689,10 @@ 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",

3
drivers/net/dsa/mv88e6xxx.h
View File

@ -602,6 +602,9 @@ 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 {