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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>
This commit is contained in:
Madalin Bucur 2020-04-30 15:59:59 +03:00 committed by Priyanka Jain
parent 564637a360
commit 2932c5a802
1 changed files with 134 additions and 6 deletions
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140
drivers/net/fsl_mdio.c
View File

@ -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 */