1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
4 * Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
5 */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <generic-phy.h>
10
11 struct sandbox_phy_priv {
12 bool initialized;
13 bool on;
14 bool broken;
15 };
16
sandbox_phy_power_on(struct phy * phy)17 static int sandbox_phy_power_on(struct phy *phy)
18 {
19 struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
20
21 if (!priv->initialized)
22 return -EIO;
23
24 if (priv->broken)
25 return -EIO;
26
27 priv->on = true;
28
29 return 0;
30 }
31
sandbox_phy_power_off(struct phy * phy)32 static int sandbox_phy_power_off(struct phy *phy)
33 {
34 struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
35
36 if (!priv->initialized)
37 return -EIO;
38
39 if (priv->broken)
40 return -EIO;
41
42 /*
43 * for validation purpose, let's says that power off
44 * works only for PHY 0
45 */
46 if (phy->id)
47 return -EIO;
48
49 priv->on = false;
50
51 return 0;
52 }
53
sandbox_phy_init(struct phy * phy)54 static int sandbox_phy_init(struct phy *phy)
55 {
56 struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
57
58 priv->initialized = true;
59 priv->on = true;
60
61 return 0;
62 }
63
sandbox_phy_exit(struct phy * phy)64 static int sandbox_phy_exit(struct phy *phy)
65 {
66 struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
67
68 priv->initialized = false;
69 priv->on = false;
70
71 return 0;
72 }
73
sandbox_phy_probe(struct udevice * dev)74 static int sandbox_phy_probe(struct udevice *dev)
75 {
76 struct sandbox_phy_priv *priv = dev_get_priv(dev);
77
78 priv->initialized = false;
79 priv->on = false;
80 priv->broken = dev_read_bool(dev, "broken");
81
82 return 0;
83 }
84
85 static struct phy_ops sandbox_phy_ops = {
86 .power_on = sandbox_phy_power_on,
87 .power_off = sandbox_phy_power_off,
88 .init = sandbox_phy_init,
89 .exit = sandbox_phy_exit,
90 };
91
92 static const struct udevice_id sandbox_phy_ids[] = {
93 { .compatible = "sandbox,phy" },
94 { }
95 };
96
97 U_BOOT_DRIVER(phy_sandbox) = {
98 .name = "phy_sandbox",
99 .id = UCLASS_PHY,
100 .of_match = sandbox_phy_ids,
101 .ops = &sandbox_phy_ops,
102 .probe = sandbox_phy_probe,
103 .priv_auto_alloc_size = sizeof(struct sandbox_phy_priv),
104 };
105