1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
4 * Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
10 #include <generic-phy.h>
13 static inline struct phy_ops *phy_dev_ops(struct udevice *dev)
15 return (struct phy_ops *)dev->driver->ops;
18 static int generic_phy_xlate_offs_flags(struct phy *phy,
19 struct ofnode_phandle_args *args)
21 debug("%s(phy=%p)\n", __func__, phy);
23 if (args->args_count > 1) {
24 debug("Invaild args_count: %d\n", args->args_count);
29 phy->id = args->args[0];
36 int generic_phy_get_by_index_nodev(ofnode node, int index, struct phy *phy)
38 struct ofnode_phandle_args args;
40 struct udevice *phydev;
43 debug("%s(node=%s, index=%d, phy=%p)\n",
44 __func__, ofnode_get_name(node), index, phy);
48 ret = ofnode_parse_phandle_with_args(node, "phys", "#phy-cells", 0,
51 debug("%s: dev_read_phandle_with_args failed: err=%d\n",
56 ret = uclass_get_device_by_ofnode(UCLASS_PHY, args.node, &phydev);
58 debug("%s: uclass_get_device_by_ofnode failed: err=%d\n",
61 /* Check if args.node's parent is a PHY provider */
62 ret = uclass_get_device_by_ofnode(UCLASS_PHY,
63 ofnode_get_parent(args.node),
68 /* insert phy idx at first position into args array */
69 for (i = args.args_count; i >= 1 ; i--)
70 args.args[i] = args.args[i - 1];
73 args.args[0] = ofnode_read_u32_default(args.node, "reg", -1);
78 ops = phy_dev_ops(phydev);
81 ret = ops->of_xlate(phy, &args);
83 ret = generic_phy_xlate_offs_flags(phy, &args);
85 debug("of_xlate() failed: %d\n", ret);
95 int generic_phy_get_by_index(struct udevice *dev, int index,
98 return generic_phy_get_by_index_nodev(dev_ofnode(dev), index, phy);
101 int generic_phy_get_by_name(struct udevice *dev, const char *phy_name,
106 debug("%s(dev=%p, name=%s, phy=%p)\n", __func__, dev, phy_name, phy);
108 index = dev_read_stringlist_search(dev, "phy-names", phy_name);
110 debug("dev_read_stringlist_search() failed: %d\n", index);
114 return generic_phy_get_by_index(dev, index, phy);
117 int generic_phy_init(struct phy *phy)
119 struct phy_ops const *ops;
121 if (!generic_phy_valid(phy))
123 ops = phy_dev_ops(phy->dev);
125 return ops->init ? ops->init(phy) : 0;
128 int generic_phy_reset(struct phy *phy)
130 struct phy_ops const *ops;
132 if (!generic_phy_valid(phy))
134 ops = phy_dev_ops(phy->dev);
136 return ops->reset ? ops->reset(phy) : 0;
139 int generic_phy_exit(struct phy *phy)
141 struct phy_ops const *ops;
143 if (!generic_phy_valid(phy))
145 ops = phy_dev_ops(phy->dev);
147 return ops->exit ? ops->exit(phy) : 0;
150 int generic_phy_power_on(struct phy *phy)
152 struct phy_ops const *ops;
154 if (!generic_phy_valid(phy))
156 ops = phy_dev_ops(phy->dev);
158 return ops->power_on ? ops->power_on(phy) : 0;
161 int generic_phy_power_off(struct phy *phy)
163 struct phy_ops const *ops;
165 if (!generic_phy_valid(phy))
167 ops = phy_dev_ops(phy->dev);
169 return ops->power_off ? ops->power_off(phy) : 0;
172 int generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk)
178 /* Return if no phy declared */
179 if (!dev_read_prop(dev, "phys", NULL))
182 count = dev_count_phandle_with_args(dev, "phys", "#phy-cells");
186 bulk->phys = devm_kcalloc(dev, count, sizeof(struct phy), GFP_KERNEL);
190 for (i = 0; i < count; i++) {
191 ret = generic_phy_get_by_index(dev, i, &bulk->phys[i]);
193 pr_err("Failed to get PHY%d for %s\n", i, dev->name);
202 int generic_phy_init_bulk(struct phy_bulk *bulk)
204 struct phy *phys = bulk->phys;
207 for (i = 0; i < bulk->count; i++) {
208 ret = generic_phy_init(&phys[i]);
210 pr_err("Can't init PHY%d\n", i);
219 generic_phy_exit(&phys[i - 1]);
224 int generic_phy_exit_bulk(struct phy_bulk *bulk)
226 struct phy *phys = bulk->phys;
229 for (i = 0; i < bulk->count; i++)
230 ret |= generic_phy_exit(&phys[i]);
235 int generic_phy_power_on_bulk(struct phy_bulk *bulk)
237 struct phy *phys = bulk->phys;
240 for (i = 0; i < bulk->count; i++) {
241 ret = generic_phy_power_on(&phys[i]);
243 pr_err("Can't power on PHY%d\n", i);
244 goto phys_poweron_err;
252 generic_phy_power_off(&phys[i - 1]);
257 int generic_phy_power_off_bulk(struct phy_bulk *bulk)
259 struct phy *phys = bulk->phys;
262 for (i = 0; i < bulk->count; i++)
263 ret |= generic_phy_power_off(&phys[i]);
268 UCLASS_DRIVER(phy) = {