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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 <dm/devres.h>
- #include <generic-phy.h>
- #include <log.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_nodev(ofnode node, int index, struct phy *phy)
- {
- struct ofnode_phandle_args args;
- struct phy_ops *ops;
- struct udevice *phydev;
- int i, ret;
- debug("%s(node=%s, index=%d, phy=%p)\n",
- __func__, ofnode_get_name(node), index, phy);
- assert(phy);
- phy->dev = NULL;
- ret = ofnode_parse_phandle_with_args(node, "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_index(struct udevice *dev, int index,
- struct phy *phy)
- {
- return generic_phy_get_by_index_nodev(dev_ofnode(dev), index, phy);
- }
- 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;
- int ret;
- if (!generic_phy_valid(phy))
- return 0;
- ops = phy_dev_ops(phy->dev);
- if (!ops->init)
- return 0;
- ret = ops->init(phy);
- if (ret)
- dev_err(phy->dev, "PHY: Failed to init %s: %d.\n",
- phy->dev->name, ret);
- return ret;
- }
- int generic_phy_reset(struct phy *phy)
- {
- struct phy_ops const *ops;
- int ret;
- if (!generic_phy_valid(phy))
- return 0;
- ops = phy_dev_ops(phy->dev);
- if (!ops->reset)
- return 0;
- ret = ops->reset(phy);
- if (ret)
- dev_err(phy->dev, "PHY: Failed to reset %s: %d.\n",
- phy->dev->name, ret);
- return ret;
- }
- int generic_phy_exit(struct phy *phy)
- {
- struct phy_ops const *ops;
- int ret;
- if (!generic_phy_valid(phy))
- return 0;
- ops = phy_dev_ops(phy->dev);
- if (!ops->exit)
- return 0;
- ret = ops->exit(phy);
- if (ret)
- dev_err(phy->dev, "PHY: Failed to exit %s: %d.\n",
- phy->dev->name, ret);
- return ret;
- }
- int generic_phy_power_on(struct phy *phy)
- {
- struct phy_ops const *ops;
- int ret;
- if (!generic_phy_valid(phy))
- return 0;
- ops = phy_dev_ops(phy->dev);
- if (!ops->power_on)
- return 0;
- ret = ops->power_on(phy);
- if (ret)
- dev_err(phy->dev, "PHY: Failed to power on %s: %d.\n",
- phy->dev->name, ret);
- return ret;
- }
- int generic_phy_power_off(struct phy *phy)
- {
- struct phy_ops const *ops;
- int ret;
- if (!generic_phy_valid(phy))
- return 0;
- ops = phy_dev_ops(phy->dev);
- if (!ops->power_off)
- return 0;
- ret = ops->power_off(phy);
- if (ret)
- dev_err(phy->dev, "PHY: Failed to power off %s: %d.\n",
- phy->dev->name, ret);
- return ret;
- }
- int generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk)
- {
- int i, ret, count;
- bulk->count = 0;
- /* Return if no phy declared */
- if (!dev_read_prop(dev, "phys", NULL))
- return 0;
- count = dev_count_phandle_with_args(dev, "phys", "#phy-cells");
- if (count < 1)
- return count;
- bulk->phys = devm_kcalloc(dev, count, sizeof(struct phy), GFP_KERNEL);
- if (!bulk->phys)
- return -ENOMEM;
- for (i = 0; i < count; i++) {
- ret = generic_phy_get_by_index(dev, i, &bulk->phys[i]);
- if (ret) {
- pr_err("Failed to get PHY%d for %s\n", i, dev->name);
- return ret;
- }
- bulk->count++;
- }
- return 0;
- }
- int generic_phy_init_bulk(struct phy_bulk *bulk)
- {
- struct phy *phys = bulk->phys;
- int i, ret;
- for (i = 0; i < bulk->count; i++) {
- ret = generic_phy_init(&phys[i]);
- if (ret) {
- pr_err("Can't init PHY%d\n", i);
- goto phys_init_err;
- }
- }
- return 0;
- phys_init_err:
- for (; i > 0; i--)
- generic_phy_exit(&phys[i - 1]);
- return ret;
- }
- int generic_phy_exit_bulk(struct phy_bulk *bulk)
- {
- struct phy *phys = bulk->phys;
- int i, ret = 0;
- for (i = 0; i < bulk->count; i++)
- ret |= generic_phy_exit(&phys[i]);
- return ret;
- }
- int generic_phy_power_on_bulk(struct phy_bulk *bulk)
- {
- struct phy *phys = bulk->phys;
- int i, ret;
- for (i = 0; i < bulk->count; i++) {
- ret = generic_phy_power_on(&phys[i]);
- if (ret) {
- pr_err("Can't power on PHY%d\n", i);
- goto phys_poweron_err;
- }
- }
- return 0;
- phys_poweron_err:
- for (; i > 0; i--)
- generic_phy_power_off(&phys[i - 1]);
- return ret;
- }
- int generic_phy_power_off_bulk(struct phy_bulk *bulk)
- {
- struct phy *phys = bulk->phys;
- int i, ret = 0;
- for (i = 0; i < bulk->count; i++)
- ret |= generic_phy_power_off(&phys[i]);
- return ret;
- }
- UCLASS_DRIVER(phy) = {
- .id = UCLASS_PHY,
- .name = "phy",
- };
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