116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2019
|
|
* Alex Marginean, NXP
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <miiphy.h>
|
|
#include <dm/device-internal.h>
|
|
#include <dm/uclass-internal.h>
|
|
|
|
void dm_mdio_probe_devices(void)
|
|
{
|
|
struct udevice *it;
|
|
struct uclass *uc;
|
|
|
|
uclass_get(UCLASS_MDIO, &uc);
|
|
uclass_foreach_dev(it, uc) {
|
|
device_probe(it);
|
|
}
|
|
}
|
|
|
|
static int dm_mdio_post_bind(struct udevice *dev)
|
|
{
|
|
/*
|
|
* MDIO command doesn't like spaces in names, don't allow them to keep
|
|
* it happy
|
|
*/
|
|
if (strchr(dev->name, ' ')) {
|
|
debug("\nError: MDIO device name \"%s\" has a space!\n",
|
|
dev->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Following read/write/reset functions are registered with legacy MII code.
|
|
* These are called for PHY operations by upper layers and we further call the
|
|
* DM MDIO driver functions.
|
|
*/
|
|
static int mdio_read(struct mii_dev *mii_bus, int addr, int devad, int reg)
|
|
{
|
|
struct udevice *dev = mii_bus->priv;
|
|
|
|
return mdio_get_ops(dev)->read(dev, addr, devad, reg);
|
|
}
|
|
|
|
static int mdio_write(struct mii_dev *mii_bus, int addr, int devad, int reg,
|
|
u16 val)
|
|
{
|
|
struct udevice *dev = mii_bus->priv;
|
|
|
|
return mdio_get_ops(dev)->write(dev, addr, devad, reg, val);
|
|
}
|
|
|
|
static int mdio_reset(struct mii_dev *mii_bus)
|
|
{
|
|
struct udevice *dev = mii_bus->priv;
|
|
|
|
if (mdio_get_ops(dev)->reset)
|
|
return mdio_get_ops(dev)->reset(dev);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int dm_mdio_post_probe(struct udevice *dev)
|
|
{
|
|
struct mdio_perdev_priv *pdata = dev_get_uclass_priv(dev);
|
|
|
|
pdata->mii_bus = mdio_alloc();
|
|
pdata->mii_bus->read = mdio_read;
|
|
pdata->mii_bus->write = mdio_write;
|
|
pdata->mii_bus->reset = mdio_reset;
|
|
pdata->mii_bus->priv = dev;
|
|
strncpy(pdata->mii_bus->name, dev->name, MDIO_NAME_LEN);
|
|
|
|
return mdio_register(pdata->mii_bus);
|
|
}
|
|
|
|
static int dm_mdio_pre_remove(struct udevice *dev)
|
|
{
|
|
struct mdio_perdev_priv *pdata = dev_get_uclass_priv(dev);
|
|
struct mdio_ops *ops = mdio_get_ops(dev);
|
|
|
|
if (ops->reset)
|
|
ops->reset(dev);
|
|
mdio_unregister(pdata->mii_bus);
|
|
mdio_free(pdata->mii_bus);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct phy_device *dm_mdio_phy_connect(struct udevice *dev, int addr,
|
|
struct udevice *ethdev,
|
|
phy_interface_t interface)
|
|
{
|
|
struct mdio_perdev_priv *pdata = dev_get_uclass_priv(dev);
|
|
|
|
if (device_probe(dev))
|
|
return 0;
|
|
|
|
return phy_connect(pdata->mii_bus, addr, ethdev, interface);
|
|
}
|
|
|
|
UCLASS_DRIVER(mdio) = {
|
|
.id = UCLASS_MDIO,
|
|
.name = "mdio",
|
|
.post_bind = dm_mdio_post_bind,
|
|
.post_probe = dm_mdio_post_probe,
|
|
.pre_remove = dm_mdio_pre_remove,
|
|
.per_device_auto_alloc_size = sizeof(struct mdio_perdev_priv),
|
|
};
|