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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +02002/*
3 * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
4 * Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +02005 */
6
7#include <common.h>
8#include <dm.h>
9#include <generic-phy.h>
10
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020011static inline struct phy_ops *phy_dev_ops(struct udevice *dev)
12{
13 return (struct phy_ops *)dev->driver->ops;
14}
15
16static int generic_phy_xlate_offs_flags(struct phy *phy,
Simon Glass23558bb2017-05-18 20:09:47 -060017 struct ofnode_phandle_args *args)
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020018{
19 debug("%s(phy=%p)\n", __func__, phy);
20
21 if (args->args_count > 1) {
22 debug("Invaild args_count: %d\n", args->args_count);
23 return -EINVAL;
24 }
25
26 if (args->args_count)
27 phy->id = args->args[0];
28 else
29 phy->id = 0;
30
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020031 return 0;
32}
33
34int generic_phy_get_by_index(struct udevice *dev, int index,
35 struct phy *phy)
36{
Simon Glass23558bb2017-05-18 20:09:47 -060037 struct ofnode_phandle_args args;
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020038 struct phy_ops *ops;
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020039 struct udevice *phydev;
Patrice Chotarda1b2fae2018-06-27 11:55:42 +020040 int i, ret;
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020041
42 debug("%s(dev=%p, index=%d, phy=%p)\n", __func__, dev, index, phy);
43
44 assert(phy);
Patrice Chotardb9688df2017-07-18 11:38:42 +020045 phy->dev = NULL;
Simon Glass23558bb2017-05-18 20:09:47 -060046 ret = dev_read_phandle_with_args(dev, "phys", "#phy-cells", 0, index,
47 &args);
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020048 if (ret) {
Simon Glass23558bb2017-05-18 20:09:47 -060049 debug("%s: dev_read_phandle_with_args failed: err=%d\n",
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020050 __func__, ret);
51 return ret;
52 }
53
Simon Glass23558bb2017-05-18 20:09:47 -060054 ret = uclass_get_device_by_ofnode(UCLASS_PHY, args.node, &phydev);
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020055 if (ret) {
Simon Glass23558bb2017-05-18 20:09:47 -060056 debug("%s: uclass_get_device_by_ofnode failed: err=%d\n",
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020057 __func__, ret);
Patrice Chotarda1b2fae2018-06-27 11:55:42 +020058
59 /* Check if args.node's parent is a PHY provider */
60 ret = uclass_get_device_by_ofnode(UCLASS_PHY,
61 ofnode_get_parent(args.node),
62 &phydev);
63 if (ret)
64 return ret;
65
66 /* insert phy idx at first position into args array */
Marek Vasut5e50adf2018-08-07 12:24:35 +020067 for (i = args.args_count; i >= 1 ; i--)
Patrice Chotarda1b2fae2018-06-27 11:55:42 +020068 args.args[i] = args.args[i - 1];
69
70 args.args_count++;
71 args.args[0] = ofnode_read_u32_default(args.node, "reg", -1);
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +020072 }
73
74 phy->dev = phydev;
75
76 ops = phy_dev_ops(phydev);
77
78 if (ops->of_xlate)
79 ret = ops->of_xlate(phy, &args);
80 else
81 ret = generic_phy_xlate_offs_flags(phy, &args);
82 if (ret) {
83 debug("of_xlate() failed: %d\n", ret);
84 goto err;
85 }
86
87 return 0;
88
89err:
90 return ret;
91}
92
93int generic_phy_get_by_name(struct udevice *dev, const char *phy_name,
94 struct phy *phy)
95{
96 int index;
97
98 debug("%s(dev=%p, name=%s, phy=%p)\n", __func__, dev, phy_name, phy);
99
Simon Glass23558bb2017-05-18 20:09:47 -0600100 index = dev_read_stringlist_search(dev, "phy-names", phy_name);
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +0200101 if (index < 0) {
Simon Glass23558bb2017-05-18 20:09:47 -0600102 debug("dev_read_stringlist_search() failed: %d\n", index);
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +0200103 return index;
104 }
105
106 return generic_phy_get_by_index(dev, index, phy);
107}
108
109int generic_phy_init(struct phy *phy)
110{
Jean-Jacques Hiblot4e184292019-10-01 14:03:26 +0200111 struct phy_ops const *ops;
112
113 if (!phy)
114 return 0;
115 ops = phy_dev_ops(phy->dev);
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +0200116
117 return ops->init ? ops->init(phy) : 0;
118}
119
120int generic_phy_reset(struct phy *phy)
121{
Jean-Jacques Hiblot4e184292019-10-01 14:03:26 +0200122 struct phy_ops const *ops;
123
124 if (!phy)
125 return 0;
126 ops = phy_dev_ops(phy->dev);
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +0200127
128 return ops->reset ? ops->reset(phy) : 0;
129}
130
131int generic_phy_exit(struct phy *phy)
132{
Jean-Jacques Hiblot4e184292019-10-01 14:03:26 +0200133 struct phy_ops const *ops;
134
135 if (!phy)
136 return 0;
137 ops = phy_dev_ops(phy->dev);
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +0200138
139 return ops->exit ? ops->exit(phy) : 0;
140}
141
142int generic_phy_power_on(struct phy *phy)
143{
Jean-Jacques Hiblot4e184292019-10-01 14:03:26 +0200144 struct phy_ops const *ops;
145
146 if (!phy)
147 return 0;
148 ops = phy_dev_ops(phy->dev);
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +0200149
150 return ops->power_on ? ops->power_on(phy) : 0;
151}
152
153int generic_phy_power_off(struct phy *phy)
154{
Jean-Jacques Hiblot4e184292019-10-01 14:03:26 +0200155 struct phy_ops const *ops;
156
157 if (!phy)
158 return 0;
159 ops = phy_dev_ops(phy->dev);
Jean-Jacques Hiblot72e50162017-04-24 11:51:27 +0200160
161 return ops->power_off ? ops->power_off(phy) : 0;
162}
163
164UCLASS_DRIVER(phy) = {
165 .id = UCLASS_PHY,
166 .name = "phy",
167};