phy/fixed.c: rework to not duplicate PHY layer functionality

With that patch fixed.c now fully emulates MDIO bus, thus no need
to duplicate PHY layer functionality. That, in turn, drastically
simplifies the code, and drops down line count.

As an additional bonus, now there is no need to register MDIO bus
for each PHY, all emulated PHYs placed on the platform fixed MDIO bus.
There is also no more need to pre-allocate PHYs via .config option,
this is all now handled dynamically.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 22 insertions, 29 deletions

diff --git a/include/linux/phy_fixed.h b/include/linux/phy_fixed.h
index 04ba70d49fb..509d8f5f984 100644
--- a/include/linux/phy_fixed.h
+++ b/include/linux/phy_fixed.h
@@ -1,38 +1,31 @@
 #ifndef __PHY_FIXED_H
 #define __PHY_FIXED_H
 
-#define MII_REGS_NUM    29
-
-/* max number of virtual phy stuff */
-#define MAX_PHY_AMNT    10
-/*
-    The idea is to emulate normal phy behavior by responding with
-    pre-defined values to mii BMCR read, so that read_status hook could
-    take all the needed info.
-*/
-
 struct fixed_phy_status {
-        u8 link;
-        u16 speed;
-        u8 duplex;
+        int link;
+        int speed;
+        int duplex;
+        int pause;
+        int asym_pause;
 };
 
-/*-----------------------------------------------------------------------------
- *  Private information hoder for mii_bus
- *-----------------------------------------------------------------------------*/
-struct fixed_info {
-        u16 *regs;
-        u8 regs_num;
-        struct fixed_phy_status phy_status;
-        struct phy_device *phydev;      /* pointer to the container */
-        /* link & speed cb */
-        int (*link_update) (struct net_device *, struct fixed_phy_status *);
+#ifdef CONFIG_FIXED_PHY
+extern int fixed_phy_add(unsigned int irq, int phy_id,
+                         struct fixed_phy_status *status);
+#else
+static inline int fixed_phy_add(unsigned int irq, int phy_id,
+                                struct fixed_phy_status *status)
+{
+        return -ENODEV;
+}
+#endif /* CONFIG_FIXED_PHY */
 
-};
-
-
-int fixed_mdio_set_link_update(struct phy_device *,
-       int (*link_update) (struct net_device *, struct fixed_phy_status *));
-struct fixed_info *fixed_mdio_get_phydev (int phydev_ind);
+/*
+ * This function issued only by fixed_phy-aware drivers, no need
+ * protect it with #ifdef
+ */
+extern int fixed_phy_set_link_update(struct phy_device *phydev,
+                        int (*link_update)(struct net_device *,
+                                           struct fixed_phy_status *));
 
 #endif /* __PHY_FIXED_H */