net: dsa: Add support for switch EEPROM access

On some chips it is possible to access the switch eeprom.
Add infrastructure support for it.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 55e75e7e8d41..37856a28c8d3 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -38,6 +38,9 @@ struct dsa_chip_data {
         struct device   *host_dev;
         int             sw_addr;
 
+        /* set to size of eeprom if supported by the switch */
+        int             eeprom_len;
+
         /* Device tree node pointer for this specific switch chip
          * used during switch setup in case additional properties
          * and resources needs to be used
@@ -258,6 +261,13 @@ struct dsa_switch_driver {
         int     (*set_temp_limit)(struct dsa_switch *ds, int temp);
         int     (*get_temp_alarm)(struct dsa_switch *ds, bool *alarm);
 #endif
+
+        /* EEPROM access */
+        int     (*get_eeprom_len)(struct dsa_switch *ds);
+        int     (*get_eeprom)(struct dsa_switch *ds,
+                              struct ethtool_eeprom *eeprom, u8 *data);
+        int     (*set_eeprom)(struct dsa_switch *ds,
+                              struct ethtool_eeprom *eeprom, u8 *data);
 };
 
 void register_switch_driver(struct dsa_switch_driver *type);