Subject: [PATCH 4/6] of: add API for changing parameters of fixed link

From: Stas Sergeev <[email-masked]>
Date: Thu, 26 Mar 2015 19:02:25 +0300

-=-=-=-=-=-=-=-=-=# Don't remove this line #=-=-=-=-=-=-=-=-=-
Signed-off-by: Stas Sergeev <[email-masked]>
---
 drivers/of/of_mdio.c    |   72
+++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/of_mdio.h |   17 +++++++++++
 2 files changed, 89 insertions(+)

diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index b3dc1e6..ade2426 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -251,6 +251,69 @@ struct phy_device *of_phy_attach(struct net_device
*dev,
 EXPORT_SYMBOL(of_phy_attach);
 
 #if defined(CONFIG_FIXED_PHY)
+struct fixed_link_data {
+    struct fixed_phy_status status;
+    struct fixed_phy_status changed;
+};
+
+static int of_phy_fixed_link_update(struct phy_device *phy,
+          struct fixed_phy_status *status)
+{
+    struct fixed_link_data *priv = phy->priv;
+
+    if (priv->changed.link) {
+        status->link = priv->status.link;
+        priv->changed.link = 0;
+    }
+    if (priv->changed.speed) {
+        status->speed = priv->status.speed;
+        priv->changed.speed = 0;
+    }
+    if (priv->changed.duplex) {
+        status->duplex = priv->status.duplex;
+        priv->changed.duplex = 0;
+    }
+    if (priv->changed.pause) {
+        status->pause = priv->status.pause;
+        priv->changed.pause = 0;
+    }
+    if (priv->changed.asym_pause) {
+        status->asym_pause = priv->status.asym_pause;
+        priv->changed.asym_pause = 0;
+    }
+    return 0;
+}
+
+int of_phy_fixed_link_set_link(struct phy_device *phy, int link)
+{
+    struct fixed_link_data *priv = phy->priv;
+
+    priv->status.link = link;
+    priv->changed.link = 1;
+    return 0;
+}
+EXPORT_SYMBOL(of_phy_fixed_link_set_link);
+
+int of_phy_fixed_link_set_speed(struct phy_device *phy, int speed)
+{
+    struct fixed_link_data *priv = phy->priv;
+
+    priv->status.speed = speed;
+    priv->changed.speed = 1;
+    return 0;
+}
+EXPORT_SYMBOL(of_phy_fixed_link_set_speed);
+
+int of_phy_fixed_link_set_duplex(struct phy_device *phy, int duplex)
+{
+    struct fixed_link_data *priv = phy->priv;
+
+    priv->status.duplex = duplex;
+    priv->changed.duplex = 1;
+    return 0;
+}
+EXPORT_SYMBOL(of_phy_fixed_link_set_duplex);
+
 /*
  * of_phy_is_fixed_link() and of_phy_register_fixed_link() must
  * support two DT bindings:
@@ -287,6 +350,7 @@ int of_phy_register_fixed_link(struct device_node *np)
     const __be32 *fixed_link_prop;
     int len;
     struct phy_device *phy;
+    struct fixed_link_data *priv;
 
     /* New binding */
     fixed_link_node = of_get_child_by_name(np, "fixed-link");
@@ -320,6 +384,14 @@ int of_phy_register_fixed_link(struct device_node *np)
         }
     }
 
+    priv = kmalloc(sizeof(*priv), GFP_KERNEL);
+    if (!priv) {
+        fixed_phy_unregister(phy);
+        return -ENOMEM;
+    }
+    memset(&priv->changed, 0, sizeof(priv->changed));
+    phy->priv = priv;
+    fixed_phy_set_link_update(phy, of_phy_fixed_link_update);
     return 0;
 }
 EXPORT_SYMBOL(of_phy_register_fixed_link);
diff --git a/include/linux/of_mdio.h b/include/linux/of_mdio.h
index d449018..677adac 100644
--- a/include/linux/of_mdio.h
+++ b/include/linux/of_mdio.h
@@ -65,6 +65,9 @@ static inline struct mii_bus *of_mdio_find_bus(struct
device_node *mdio_np)
 #if defined(CONFIG_OF) && defined(CONFIG_FIXED_PHY)
 extern int of_phy_register_fixed_link(struct device_node *np);
 extern bool of_phy_is_fixed_link(struct device_node *np);
+extern int of_phy_fixed_link_set_link(struct phy_device *phy, int link);
+extern int of_phy_fixed_link_set_speed(struct phy_device *phy, int speed);
+extern int of_phy_fixed_link_set_duplex(struct phy_device *phy, int
duplex);
 #else
 static inline int of_phy_register_fixed_link(struct device_node *np)
 {
@@ -74,6 +77,20 @@ static inline bool of_phy_is_fixed_link(struct
device_node *np)
 {
     return false;
 }
+static inline int of_phy_fixed_link_set_link(struct phy_device *phy,
int link)
+{
+    return -ENOSYS;
+}
+static inline int of_phy_fixed_link_set_speed(struct phy_device *phy,
+                          int speed)
+{
+    return -ENOSYS;
+}
+static inline int of_phy_fixed_link_set_duplex(struct phy_device *phy,
+                           int duplex)
+{
+    return -ENOSYS;
+}
 #endif

-- 
1.7.9.5