target/linux/ar7/patches-2.6.30/910-cpmac_fixed_phy.patch

   1 This is a hack to make cpmac work with the external switch on a DG834 v3; it
   2 should also work on other similar routers. It has not been tested on hardware
   3 with multiple cpmac devices or with no external switch. It may be safer to
   4 move external_switch to pdata rather than trying to detect it, and to set
   5 phy_mask correctly rather than moving the phy search loop.
   6
   7 --- a/drivers/net/cpmac.c
   8 +++ b/drivers/net/cpmac.c
   9 @@ -1096,7 +1096,7 @@ static int external_switch;
  10  static int __devinit cpmac_probe(struct platform_device *pdev)
  11  {
  12         int rc, phy_id;
  13 -       char *mdio_bus_id = "0";
  14 +       char mdio_bus_id[BUS_ID_SIZE];
  15         struct resource *mem;
  16         struct cpmac_priv *priv;
  17         struct net_device *dev;
  18 @@ -1104,22 +1104,23 @@ static int __devinit cpmac_probe(struct
  19
  20         pdata = pdev->dev.platform_data;
  21
  22 -       for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
  23 -               if (!(pdata->phy_mask & (1 << phy_id)))
  24 -                       continue;
  25 -               if (!cpmac_mii->phy_map[phy_id])
  26 -                       continue;
  27 -               break;
  28 +       if (external_switch || dumb_switch) {
  29 +               strncpy(mdio_bus_id, "0", BUS_ID_SIZE); /* fixed phys bus */
  30 +               phy_id = pdev->id;
  31 +       } else {
  32 +               for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
  33 +                       if (!(pdata->phy_mask & (1 << phy_id)))
  34 +                               continue;
  35 +                       if (!cpmac_mii->phy_map[phy_id])
  36 +                               continue;
  37 +                       strncpy(mdio_bus_id, cpmac_mii->id, BUS_ID_SIZE);
  38 +                       break;
  39 +               }
  40         }
  41
  42         if (phy_id == PHY_MAX_ADDR) {
  43 -               if (external_switch || dumb_switch) {
  44 -                       mdio_bus_id = 0; /* fixed phys bus */
  45 -                       phy_id = pdev->id;
  46 -               } else {
  47 -                       dev_err(&pdev->dev, "no PHY present\n");
  48 -                       return -ENODEV;
  49 -               }
  50 +               dev_err(&pdev->dev, "no PHY present\n");
  51 +               return -ENODEV;
  52         }
  53
  54         dev = alloc_etherdev_mq(sizeof(*priv), CPMAC_QUEUES);
  55 @@ -1160,8 +1161,10 @@ static int __devinit cpmac_probe(struct
  56         priv->msg_enable = netif_msg_init(debug_level, 0xff);
  57         memcpy(dev->dev_addr, pdata->dev_addr, sizeof(dev->dev_addr));
  58
  59 -       priv->phy = phy_connect(dev, dev_name(&cpmac_mii->phy_map[phy_id]->dev),
  60 -                               &cpmac_adjust_link, 0, PHY_INTERFACE_MODE_MII);
  61 +       snprintf(priv->phy_name, BUS_ID_SIZE, PHY_ID_FMT, mdio_bus_id, phy_id);
  62 +
  63 +       priv->phy = phy_connect(dev, priv->phy_name, &cpmac_adjust_link, 0,
  64 +                                               PHY_INTERFACE_MODE_MII);
  65         if (IS_ERR(priv->phy)) {
  66                 if (netif_msg_drv(priv))
  67                         printk(KERN_ERR "%s: Could not attach to PHY\n",
  68 @@ -1235,11 +1238,11 @@ int __devinit cpmac_init(void)
  69
  70         cpmac_mii->reset(cpmac_mii);
  71
  72 -       for (i = 0; i < 300000; i++)
  73 +       for (i = 0; i < 300; i++)
  74                 if ((mask = cpmac_read(cpmac_mii->priv, CPMAC_MDIO_ALIVE)))
  75                         break;
  76                 else
  77 -                       cpu_relax();
  78 +                       msleep(10);
  79
  80         mask &= 0x7fffffff;
  81         if (mask & (mask - 1)) {
  82 @@ -1248,7 +1251,7 @@ int __devinit cpmac_init(void)
  83         }
  84
  85         cpmac_mii->phy_mask = ~(mask | 0x80000000);
  86 -       snprintf(cpmac_mii->id, MII_BUS_ID_SIZE, "0");
  87 +       snprintf(cpmac_mii->id, MII_BUS_ID_SIZE, "1");
  88
  89         res = mdiobus_register(cpmac_mii);
  90         if (res)