net: tsec: fsl_mdio: add DM MDIO support

Allow the MDIO devices to be probed based on the device tree.

Signed-off-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>

diff --git a/drivers/net/fsl_mdio.c b/drivers/net/fsl_mdio.c
index 894b52ee66f412b09548a25e5dfa28e8272f8fcc..43040d4c3f89d207b060967a67e337f3d6835c5b 100644 (file)
--- a/drivers/net/fsl_mdio.c
+++ b/drivers/net/fsl_mdio.c
@@ -12,6 +12,12 @@
 #include <asm/io.h>
 #include <linux/errno.h>
 
+#ifdef CONFIG_DM_MDIO
+struct tsec_mdio_priv {
+       struct tsec_mii_mng __iomem *regs;
+};
+#endif
+
 void tsec_local_mdio_write(struct tsec_mii_mng __iomem *phyregs, int port_addr,
                int dev_addr, int regnum, int value)
 {
@@ -56,10 +62,21 @@ int tsec_local_mdio_read(struct tsec_mii_mng __iomem *phyregs, int port_addr,
        return value;
 }
 
+#if defined(CONFIG_PHYLIB)
 static int fsl_pq_mdio_reset(struct mii_dev *bus)
 {
-       struct tsec_mii_mng __iomem *regs =
-               (struct tsec_mii_mng __iomem *)bus->priv;
+       struct tsec_mii_mng __iomem *regs;
+#ifndef CONFIG_DM_MDIO
+       regs = (struct tsec_mii_mng __iomem *)bus->priv;
+#else
+       struct tsec_mdio_priv *priv;
+
+       if (!bus->priv)
+               return -EINVAL;
+
+       priv = dev_get_priv(bus->priv);
+       regs = priv->regs;
+#endif
 
        /* Reset MII (due to new addresses) */
        out_be32(&regs->miimcfg, MIIMCFG_RESET_MGMT);
@@ -71,11 +88,22 @@ static int fsl_pq_mdio_reset(struct mii_dev *bus)
 
        return 0;
 }
+#endif
 
 int tsec_phy_read(struct mii_dev *bus, int addr, int dev_addr, int regnum)
 {
-       struct tsec_mii_mng __iomem *phyregs =
-               (struct tsec_mii_mng __iomem *)bus->priv;
+       struct tsec_mii_mng __iomem *phyregs;
+#ifndef CONFIG_DM_MDIO
+       phyregs = (struct tsec_mii_mng __iomem *)bus->priv;
+#else
+       struct tsec_mdio_priv *priv;
+
+       if (!bus->priv)
+               return -EINVAL;
+
+       priv = dev_get_priv(bus->priv);
+       phyregs = priv->regs;
+#endif
 
        return tsec_local_mdio_read(phyregs, addr, dev_addr, regnum);
 }
@@ -83,14 +111,25 @@ int tsec_phy_read(struct mii_dev *bus, int addr, int dev_addr, int regnum)
 int tsec_phy_write(struct mii_dev *bus, int addr, int dev_addr, int regnum,
                        u16 value)
 {
-       struct tsec_mii_mng __iomem *phyregs =
-               (struct tsec_mii_mng __iomem *)bus->priv;
+       struct tsec_mii_mng __iomem *phyregs;
+#ifndef CONFIG_DM_MDIO
+       phyregs = (struct tsec_mii_mng __iomem *)bus->priv;
+#else
+       struct tsec_mdio_priv *priv;
+
+       if (!bus->priv)
+               return -EINVAL;
+
+       priv = dev_get_priv(bus->priv);
+       phyregs = priv->regs;
+#endif
 
        tsec_local_mdio_write(phyregs, addr, dev_addr, regnum, value);
 
        return 0;
 }
 
+#ifndef CONFIG_DM_MDIO
 int fsl_pq_mdio_init(bd_t *bis, struct fsl_pq_mdio_info *info)
 {
        struct mii_dev *bus = mdio_alloc();
@@ -109,3 +148,92 @@ int fsl_pq_mdio_init(bd_t *bis, struct fsl_pq_mdio_info *info)
 
        return mdio_register(bus);
 }
+#else /* CONFIG_DM_MDIO */
+#if defined(CONFIG_PHYLIB)
+static int tsec_mdio_read(struct udevice *dev, int addr, int devad, int reg)
+{
+       struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
+                                                NULL;
+
+       if (pdata && pdata->mii_bus)
+               return tsec_phy_read(pdata->mii_bus, addr, devad, reg);
+
+       return -1;
+}
+
+static int tsec_mdio_write(struct udevice *dev, int addr, int devad, int reg,
+                          u16 val)
+{
+       struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
+                                                NULL;
+
+       if (pdata && pdata->mii_bus)
+               return tsec_phy_write(pdata->mii_bus, addr, devad, reg, val);
+
+       return -1;
+}
+
+static int tsec_mdio_reset(struct udevice *dev)
+{
+       struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
+                                                NULL;
+
+       if (pdata && pdata->mii_bus)
+               return fsl_pq_mdio_reset(pdata->mii_bus);
+
+       return -1;
+}
+
+static const struct mdio_ops tsec_mdio_ops = {
+       .read = tsec_mdio_read,
+       .write = tsec_mdio_write,
+       .reset = tsec_mdio_reset,
+};
+
+static const struct udevice_id tsec_mdio_ids[] = {
+       { .compatible = "fsl,gianfar-tbi" },
+       { .compatible = "fsl,gianfar-mdio" },
+       { .compatible = "fsl,etsec2-tbi" },
+       { .compatible = "fsl,etsec2-mdio" },
+       { .compatible = "fsl,fman-mdio" },
+       {}
+};
+
+static int tsec_mdio_probe(struct udevice *dev)
+{
+       struct tsec_mdio_priv *priv = (dev) ? dev_get_priv(dev) : NULL;
+       struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
+                                                NULL;
+
+       if (!dev) {
+               printf("%s dev = NULL\n", __func__);
+               return -1;
+       }
+       if (!priv) {
+               printf("dev_get_priv(dev %p) = NULL\n", dev);
+               return -1;
+       }
+       priv->regs = (void *)(uintptr_t)dev_read_addr(dev);
+       debug("%s priv %p @ regs %p, pdata %p\n", __func__,
+             priv, priv->regs, pdata);
+
+       return 0;
+}
+
+static int tsec_mdio_remove(struct udevice *dev)
+{
+       return 0;
+}
+
+U_BOOT_DRIVER(tsec_mdio) = {
+       .name = "tsec_mdio",
+       .id = UCLASS_MDIO,
+       .of_match = tsec_mdio_ids,
+       .probe = tsec_mdio_probe,
+       .remove = tsec_mdio_remove,
+       .ops = &tsec_mdio_ops,
+       .priv_auto_alloc_size = sizeof(struct tsec_mdio_priv),
+       .platdata_auto_alloc_size = sizeof(struct mdio_perdev_priv),
+};
+#endif /* CONFIG_PHYLIB */
+#endif /* CONFIG_DM_MDIO */