1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
3*4882a593Smuzhiyun * Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <dm.h>
10*4882a593Smuzhiyun #include <generic-phy.h>
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun struct sandbox_phy_priv {
15*4882a593Smuzhiyun bool initialized;
16*4882a593Smuzhiyun bool on;
17*4882a593Smuzhiyun bool broken;
18*4882a593Smuzhiyun };
19*4882a593Smuzhiyun
sandbox_phy_power_on(struct phy * phy)20*4882a593Smuzhiyun static int sandbox_phy_power_on(struct phy *phy)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun if (!priv->initialized)
25*4882a593Smuzhiyun return -EIO;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun if (priv->broken)
28*4882a593Smuzhiyun return -EIO;
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun priv->on = true;
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun return 0;
33*4882a593Smuzhiyun }
34*4882a593Smuzhiyun
sandbox_phy_power_off(struct phy * phy)35*4882a593Smuzhiyun static int sandbox_phy_power_off(struct phy *phy)
36*4882a593Smuzhiyun {
37*4882a593Smuzhiyun struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun if (!priv->initialized)
40*4882a593Smuzhiyun return -EIO;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun if (priv->broken)
43*4882a593Smuzhiyun return -EIO;
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun /*
46*4882a593Smuzhiyun * for validation purpose, let's says that power off
47*4882a593Smuzhiyun * works only for PHY 0
48*4882a593Smuzhiyun */
49*4882a593Smuzhiyun if (phy->id)
50*4882a593Smuzhiyun return -EIO;
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun priv->on = false;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun return 0;
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun
sandbox_phy_init(struct phy * phy)57*4882a593Smuzhiyun static int sandbox_phy_init(struct phy *phy)
58*4882a593Smuzhiyun {
59*4882a593Smuzhiyun struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun priv->initialized = true;
62*4882a593Smuzhiyun priv->on = true;
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun return 0;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
sandbox_phy_exit(struct phy * phy)67*4882a593Smuzhiyun static int sandbox_phy_exit(struct phy *phy)
68*4882a593Smuzhiyun {
69*4882a593Smuzhiyun struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun priv->initialized = false;
72*4882a593Smuzhiyun priv->on = false;
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun return 0;
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
sandbox_phy_probe(struct udevice * dev)77*4882a593Smuzhiyun static int sandbox_phy_probe(struct udevice *dev)
78*4882a593Smuzhiyun {
79*4882a593Smuzhiyun struct sandbox_phy_priv *priv = dev_get_priv(dev);
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun priv->initialized = false;
82*4882a593Smuzhiyun priv->on = false;
83*4882a593Smuzhiyun priv->broken = dev_read_bool(dev, "broken");
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun return 0;
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun static struct phy_ops sandbox_phy_ops = {
89*4882a593Smuzhiyun .power_on = sandbox_phy_power_on,
90*4882a593Smuzhiyun .power_off = sandbox_phy_power_off,
91*4882a593Smuzhiyun .init = sandbox_phy_init,
92*4882a593Smuzhiyun .exit = sandbox_phy_exit,
93*4882a593Smuzhiyun };
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun static const struct udevice_id sandbox_phy_ids[] = {
96*4882a593Smuzhiyun { .compatible = "sandbox,phy" },
97*4882a593Smuzhiyun { }
98*4882a593Smuzhiyun };
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun U_BOOT_DRIVER(phy_sandbox) = {
101*4882a593Smuzhiyun .name = "phy_sandbox",
102*4882a593Smuzhiyun .id = UCLASS_PHY,
103*4882a593Smuzhiyun .of_match = sandbox_phy_ids,
104*4882a593Smuzhiyun .ops = &sandbox_phy_ops,
105*4882a593Smuzhiyun .probe = sandbox_phy_probe,
106*4882a593Smuzhiyun .priv_auto_alloc_size = sizeof(struct sandbox_phy_priv),
107*4882a593Smuzhiyun };
108