net: dsa: Add support for reporting switch chip temperatures

Some switches provide chip temperature data.
Add support for reporting it through the hwmon subsystem.

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

1 files changed, 16 insertions, 0 deletions

diff --git a/include/net/dsa.h b/include/net/dsa.h
index b76559293535..55e75e7e8d41 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -139,6 +139,14 @@ struct dsa_switch {
          */
         struct device           *master_dev;
 
+#ifdef CONFIG_NET_DSA_HWMON
+        /*
+         * Hardware monitoring information
+         */
+        char                    hwmon_name[IFNAMSIZ + 8];
+        struct device           *hwmon_dev;
+#endif
+
         /*
          * Slave mii_bus and devices for the individual ports.
          */
@@ -242,6 +250,14 @@ struct dsa_switch_driver {
                            struct ethtool_eee *e);
         int     (*get_eee)(struct dsa_switch *ds, int port,
                            struct ethtool_eee *e);
+
+#ifdef CONFIG_NET_DSA_HWMON
+        /* Hardware monitoring */
+        int     (*get_temp)(struct dsa_switch *ds, int *temp);
+        int     (*get_temp_limit)(struct dsa_switch *ds, int *temp);
+        int     (*set_temp_limit)(struct dsa_switch *ds, int temp);
+        int     (*get_temp_alarm)(struct dsa_switch *ds, bool *alarm);
+#endif
 };
 
 void register_switch_driver(struct dsa_switch_driver *type);