cpmac: convert to new Fixed PHY infrastructure

This patch converts cpmac to the new Fixed PHY infrastructure, though it
doesn't fix all the problems with that driver. I didn't even bother to
test this patch to compile, because cpmac driver is broken in several ways:

1. This driver won't compile by itself because lack of its header describing
   platform data;
2. It assumes that fixed PHYs should be created by the ethernet driver.
   It is wrong assumption: fixed PHYs creation is platform code authority,
   driver must blindly accept bus_id and phy_id platform data variables
   instead.

Also, it seem that that driver doesn't have actual in-tree users, so
nothing to fix further.

The main purpose of that patch is to get rid of the following Kconfig
warning:

scripts/kconfig/conf -s arch/powerpc/Kconfig
drivers/net/Kconfig:1713:warning: 'select' used by config symbol
'CPMAC' refers to undefined symbol 'FIXED_MII_100_FDX'

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 18 insertions, 37 deletions

diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c
index 6ccebb830ff9..c85194f2cd2d 100644
--- a/drivers/net/cpmac.c
+++ b/drivers/net/cpmac.c
@@ -845,15 +845,6 @@ static void cpmac_adjust_link(struct net_device *dev)
         spin_unlock(&priv->lock);
 }
 
-static int cpmac_link_update(struct net_device *dev,
-                             struct fixed_phy_status *status)
-{
-        status->link = 1;
-        status->speed = 100;
-        status->duplex = 1;
-        return 0;
-}
-
 static int cpmac_open(struct net_device *dev)
 {
         int i, size, res;
@@ -996,11 +987,11 @@ static int external_switch;
 static int __devinit cpmac_probe(struct platform_device *pdev)
 {
         int rc, phy_id, i;
+        int mdio_bus_id = cpmac_mii.id;
         struct resource *mem;
         struct cpmac_priv *priv;
         struct net_device *dev;
         struct plat_cpmac_data *pdata;
-        struct fixed_info *fixed_phy;
         DECLARE_MAC_BUF(mac);
 
         pdata = pdev->dev.platform_data;
@@ -1014,9 +1005,23 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
         }
 
         if (phy_id == PHY_MAX_ADDR) {
-                if (external_switch || dumb_switch)
+                if (external_switch || dumb_switch) {
+                        struct fixed_phy_status status = {};
+
+                        mdio_bus_id = 0;
+
+                        /*
+                         * FIXME: this should be in the platform code!
+                         * Since there is not platform code at all (that is,
+                         * no mainline users of that driver), place it here
+                         * for now.
+                         */
                         phy_id = 0;
-                else {
+                        status.link = 1;
+                        status.duplex = 1;
+                        status.speed = 100;
+                        fixed_phy_add(PHY_POLL, phy_id, &status);
+                } else {
                         printk(KERN_ERR "cpmac: no PHY present\n");
                         return -ENODEV;
                 }
@@ -1060,32 +1065,8 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
         priv->msg_enable = netif_msg_init(debug_level, 0xff);
         memcpy(dev->dev_addr, pdata->dev_addr, sizeof(dev->dev_addr));
 
-        if (phy_id == 31) {
-                snprintf(priv->phy_name, BUS_ID_SIZE, PHY_ID_FMT, cpmac_mii.id,
-                         phy_id);
-        } else {
-                /* Let's try to get a free fixed phy... */
-                for (i = 0; i < MAX_PHY_AMNT; i++) {
-                        fixed_phy = fixed_mdio_get_phydev(i);
-                        if (!fixed_phy)
-                                continue;
-                        if (!fixed_phy->phydev->attached_dev) {
-                                strncpy(priv->phy_name,
-                                        fixed_phy->phydev->dev.bus_id,
-                                        BUS_ID_SIZE);
-                                fixed_mdio_set_link_update(fixed_phy->phydev,
-                                                           &cpmac_link_update);
-                                goto phy_found;
-                        }
-                }
-                if (netif_msg_drv(priv))
-                        printk(KERN_ERR "%s: Could not find fixed PHY\n",
-                               dev->name);
-                rc = -ENODEV;
-                goto fail;
-        }
+        snprintf(priv->phy_name, BUS_ID_SIZE, PHY_ID_FMT, mdio_bus_id, phy_id);
 
-phy_found:
         priv->phy = phy_connect(dev, priv->phy_name, &cpmac_adjust_link, 0,
                                 PHY_INTERFACE_MODE_MII);
         if (IS_ERR(priv->phy)) {