netdev - Re: [PATCH 7/9] net/ucc_geth: Rework ucc_geth driver to use OF PHY/MDIO helper functions

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Date:	Wed, 18 Mar 2009 23:07:14 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	linuxppc-dev@...abs.org, netdev@...r.kernel.org,
	afleming@...escale.com, avorontsov@...mvista.com,
	davem@...emloft.net, galak@...nel.crashing.org
Subject: Re: [PATCH 7/9] net/ucc_geth: Rework ucc_geth driver to use OF 
	PHY/MDIO helper functions

RFC, please don't apply yet.

On Wed, Mar 18, 2009 at 11:00 PM, Grant Likely
<grant.likely@...retlab.ca> wrote:
> From: Grant Likely <grant.likely@...retlab.ca>
>
> This patch simplifies the driver by making use of more common code.
>
> Signed-off-by: Grant Likely <grant.likely@...retlab.ca>
> ---
>
>  drivers/net/ucc_geth.c     |   27 ++++++---------------------
>  drivers/net/ucc_geth_mii.c |   17 +++--------------
>  2 files changed, 9 insertions(+), 35 deletions(-)
>
>
> diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
> index e879868..45bb627 100644
> --- a/drivers/net/ucc_geth.c
> +++ b/drivers/net/ucc_geth.c
> @@ -28,6 +28,7 @@
>  #include <linux/mii.h>
>  #include <linux/phy.h>
>  #include <linux/workqueue.h>
> +#include <linux/of_mdio.h>
>  #include <linux/of_platform.h>
>
>  #include <asm/uaccess.h>
> @@ -1537,35 +1538,19 @@ static int init_phy(struct net_device *dev)
>  {
>        struct ucc_geth_private *priv = netdev_priv(dev);
>        struct device_node *np = priv->node;
> -       struct device_node *phy, *mdio;
> -       const phandle *ph;
> -       char bus_name[MII_BUS_ID_SIZE];
> -       const unsigned int *id;
> +       struct device_node *phy;
>        struct phy_device *phydev;
> -       char phy_id[BUS_ID_SIZE];
>
>        priv->oldlink = 0;
>        priv->oldspeed = 0;
>        priv->oldduplex = -1;
>
> -       ph = of_get_property(np, "phy-handle", NULL);
> -       phy = of_find_node_by_phandle(*ph);
> -       mdio = of_get_parent(phy);
> -
> -       id = of_get_property(phy, "reg", NULL);
> -
> +       phy = of_parse_phandle(np, "phy-handle", 0);
> +       phydev = of_phy_connect(dev, phy, &adjust_link, 0, priv->phy_interface);
>        of_node_put(phy);
> -       of_node_put(mdio);
> -
> -       uec_mdio_bus_name(bus_name, mdio);
> -       snprintf(phy_id, sizeof(phy_id), "%s:%02x",
> -                                bus_name, *id);
> -
> -       phydev = phy_connect(dev, phy_id, &adjust_link, 0, priv->phy_interface);
> -
> -       if (IS_ERR(phydev)) {
> +       if (!phydev) {
>                printk("%s: Could not attach to PHY\n", dev->name);
> -               return PTR_ERR(phydev);
> +               return -ENODEV;
>        }
>
>        phydev->supported &= (ADVERTISED_10baseT_Half |
> diff --git a/drivers/net/ucc_geth_mii.c b/drivers/net/ucc_geth_mii.c
> index 0ada4ed..9f2492f 100644
> --- a/drivers/net/ucc_geth_mii.c
> +++ b/drivers/net/ucc_geth_mii.c
> @@ -36,6 +36,7 @@
>  #include <linux/mii.h>
>  #include <linux/phy.h>
>  #include <linux/fsl_devices.h>
> +#include <linux/of_mdio.h>
>  #include <linux/of_platform.h>
>
>  #include <asm/io.h>
> @@ -135,11 +136,10 @@ static int uec_mdio_probe(struct of_device *ofdev, const struct of_device_id *ma
>  {
>        struct device *device = &ofdev->dev;
>        struct device_node *np = ofdev->node, *tempnp = NULL;
> -       struct device_node *child = NULL;
>        struct ucc_mii_mng __iomem *regs;
>        struct mii_bus *new_bus;
>        struct resource res;
> -       int k, err = 0;
> +       int err = 0;
>
>        new_bus = mdiobus_alloc();
>        if (NULL == new_bus)
> @@ -165,17 +165,6 @@ static int uec_mdio_probe(struct of_device *ofdev, const struct of_device_id *ma
>                goto reg_map_fail;
>        }
>
> -       for (k = 0; k < 32; k++)
> -               new_bus->irq[k] = PHY_POLL;
> -
> -       while ((child = of_get_next_child(np, child)) != NULL) {
> -               int irq = irq_of_parse_and_map(child, 0);
> -               if (irq != NO_IRQ) {
> -                       const u32 *id = of_get_property(child, "reg", NULL);
> -                       new_bus->irq[*id] = irq;
> -               }
> -       }
> -
>        /* Set the base address */
>        regs = ioremap(res.start, sizeof(struct ucc_mii_mng));
>
> @@ -220,7 +209,7 @@ static int uec_mdio_probe(struct of_device *ofdev, const struct of_device_id *ma
>                }
>        }
>
> -       err = mdiobus_register(new_bus);
> +       err = of_mdiobus_register(new_bus, np);
>        if (0 != err) {
>                printk(KERN_ERR "%s: Cannot register as MDIO bus\n",
>                       new_bus->name);
>
>



-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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