phy-uclass.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
* Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
*/
#include <common.h>
#include <dm.h>
#include <generic-phy.h>
static inline struct phy_ops *phy_dev_ops(struct udevice *dev)
{
return (struct phy_ops *)dev->driver->ops;
}
static int generic_phy_xlate_offs_flags(struct phy *phy,
struct ofnode_phandle_args *args)
{
debug("%s(phy=%p)\n", __func__, phy);
if (args->args_count > 1) {
debug("Invaild args_count: %d\n", args->args_count);
return -EINVAL;
}
if (args->args_count)
phy->id = args->args[0];
else
phy->id = 0;
return 0;
}
int generic_phy_get_by_index(struct udevice *dev, int index,
struct phy *phy)
{
struct ofnode_phandle_args args;
struct phy_ops *ops;
struct udevice *phydev;
int i, ret;
debug("%s(dev=%p, index=%d, phy=%p)\n", __func__, dev, index, phy);
assert(phy);
phy->dev = NULL;
ret = dev_read_phandle_with_args(dev, "phys", "#phy-cells", 0, index,
&args);
if (ret) {
debug("%s: dev_read_phandle_with_args failed: err=%d\n",
__func__, ret);
return ret;
}
ret = uclass_get_device_by_ofnode(UCLASS_PHY, args.node, &phydev);
if (ret) {
debug("%s: uclass_get_device_by_ofnode failed: err=%d\n",
__func__, ret);
/* Check if args.node's parent is a PHY provider */
ret = uclass_get_device_by_ofnode(UCLASS_PHY,
ofnode_get_parent(args.node),
&phydev);
if (ret)
return ret;
/* insert phy idx at first position into args array */
for (i = args.args_count; i >= 1 ; i--)
args.args[i] = args.args[i - 1];
args.args_count++;
args.args[0] = ofnode_read_u32_default(args.node, "reg", -1);
}
phy->dev = phydev;
ops = phy_dev_ops(phydev);
if (ops->of_xlate)
ret = ops->of_xlate(phy, &args);
else
ret = generic_phy_xlate_offs_flags(phy, &args);
if (ret) {
debug("of_xlate() failed: %d\n", ret);
goto err;
}
return 0;
err:
return ret;
}
int generic_phy_get_by_name(struct udevice *dev, const char *phy_name,
struct phy *phy)
{
int index;
debug("%s(dev=%p, name=%s, phy=%p)\n", __func__, dev, phy_name, phy);
index = dev_read_stringlist_search(dev, "phy-names", phy_name);
if (index < 0) {
debug("dev_read_stringlist_search() failed: %d\n", index);
return index;
}
return generic_phy_get_by_index(dev, index, phy);
}
int generic_phy_init(struct phy *phy)
{
struct phy_ops const *ops;
if (!phy)
return 0;
ops = phy_dev_ops(phy->dev);
return ops->init ? ops->init(phy) : 0;
}
int generic_phy_reset(struct phy *phy)
{
struct phy_ops const *ops;
if (!phy)
return 0;
ops = phy_dev_ops(phy->dev);
return ops->reset ? ops->reset(phy) : 0;
}
int generic_phy_exit(struct phy *phy)
{
struct phy_ops const *ops;
if (!phy)
return 0;
ops = phy_dev_ops(phy->dev);
return ops->exit ? ops->exit(phy) : 0;
}
int generic_phy_power_on(struct phy *phy)
{
struct phy_ops const *ops;
if (!phy)
return 0;
ops = phy_dev_ops(phy->dev);
return ops->power_on ? ops->power_on(phy) : 0;
}
int generic_phy_power_off(struct phy *phy)
{
struct phy_ops const *ops;
if (!phy)
return 0;
ops = phy_dev_ops(phy->dev);
return ops->power_off ? ops->power_off(phy) : 0;
}
UCLASS_DRIVER(phy) = {
.id = UCLASS_PHY,
.name = "phy",
};