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- // 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)
- {
- const char *dt_name;
- /* set a custom name for the MDIO device, if present in DT */
- if (ofnode_valid(dev->node)) {
- dt_name = ofnode_read_string(dev->node, "device-name");
- if (dt_name) {
- debug("renaming dev %s to %s\n", dev->name, dt_name);
- device_set_name(dev, dt_name);
- }
- }
- /*
- * 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 - 1);
- 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),
- };
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