1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2010
4 * Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc
5 */
6
7 #include <common.h>
8 #include <miiphy.h>
9
10 #include <asm/io.h>
11
12 struct io_bb_pinset {
13 int mdio;
14 int mdc;
15 };
16
io_bb_mii_init(struct bb_miiphy_bus * bus)17 static int io_bb_mii_init(struct bb_miiphy_bus *bus)
18 {
19 return 0;
20 }
21
io_bb_mdio_active(struct bb_miiphy_bus * bus)22 static int io_bb_mdio_active(struct bb_miiphy_bus *bus)
23 {
24 struct io_bb_pinset *pins = bus->priv;
25
26 out_be32((void *)GPIO0_TCR,
27 in_be32((void *)GPIO0_TCR) | pins->mdio);
28
29 return 0;
30 }
31
io_bb_mdio_tristate(struct bb_miiphy_bus * bus)32 static int io_bb_mdio_tristate(struct bb_miiphy_bus *bus)
33 {
34 struct io_bb_pinset *pins = bus->priv;
35
36 out_be32((void *)GPIO0_TCR,
37 in_be32((void *)GPIO0_TCR) & ~pins->mdio);
38
39 return 0;
40 }
41
io_bb_set_mdio(struct bb_miiphy_bus * bus,int v)42 static int io_bb_set_mdio(struct bb_miiphy_bus *bus, int v)
43 {
44 struct io_bb_pinset *pins = bus->priv;
45
46 if (v)
47 out_be32((void *)GPIO0_OR,
48 in_be32((void *)GPIO0_OR) | pins->mdio);
49 else
50 out_be32((void *)GPIO0_OR,
51 in_be32((void *)GPIO0_OR) & ~pins->mdio);
52
53 return 0;
54 }
55
io_bb_get_mdio(struct bb_miiphy_bus * bus,int * v)56 static int io_bb_get_mdio(struct bb_miiphy_bus *bus, int *v)
57 {
58 struct io_bb_pinset *pins = bus->priv;
59
60 *v = ((in_be32((void *)GPIO0_IR) & pins->mdio) != 0);
61
62 return 0;
63 }
64
io_bb_set_mdc(struct bb_miiphy_bus * bus,int v)65 static int io_bb_set_mdc(struct bb_miiphy_bus *bus, int v)
66 {
67 struct io_bb_pinset *pins = bus->priv;
68
69 if (v)
70 out_be32((void *)GPIO0_OR,
71 in_be32((void *)GPIO0_OR) | pins->mdc);
72 else
73 out_be32((void *)GPIO0_OR,
74 in_be32((void *)GPIO0_OR) & ~pins->mdc);
75
76 return 0;
77 }
78
io_bb_delay(struct bb_miiphy_bus * bus)79 static int io_bb_delay(struct bb_miiphy_bus *bus)
80 {
81 udelay(1);
82
83 return 0;
84 }
85
86 struct io_bb_pinset io_bb_pinsets[] = {
87 {
88 .mdio = CONFIG_SYS_MDIO_PIN,
89 .mdc = CONFIG_SYS_MDC_PIN,
90 },
91 #ifdef CONFIG_SYS_GBIT_MII1_BUSNAME
92 {
93 .mdio = CONFIG_SYS_MDIO1_PIN,
94 .mdc = CONFIG_SYS_MDC1_PIN,
95 },
96 #endif
97 };
98
99 struct bb_miiphy_bus bb_miiphy_buses[] = {
100 {
101 .name = CONFIG_SYS_GBIT_MII_BUSNAME,
102 .init = io_bb_mii_init,
103 .mdio_active = io_bb_mdio_active,
104 .mdio_tristate = io_bb_mdio_tristate,
105 .set_mdio = io_bb_set_mdio,
106 .get_mdio = io_bb_get_mdio,
107 .set_mdc = io_bb_set_mdc,
108 .delay = io_bb_delay,
109 .priv = &io_bb_pinsets[0],
110 },
111 #ifdef CONFIG_SYS_GBIT_MII1_BUSNAME
112 {
113 .name = CONFIG_SYS_GBIT_MII1_BUSNAME,
114 .init = io_bb_mii_init,
115 .mdio_active = io_bb_mdio_active,
116 .mdio_tristate = io_bb_mdio_tristate,
117 .set_mdio = io_bb_set_mdio,
118 .get_mdio = io_bb_get_mdio,
119 .set_mdc = io_bb_set_mdc,
120 .delay = io_bb_delay,
121 .priv = &io_bb_pinsets[1],
122 },
123 #endif
124 };
125
126 int bb_miiphy_buses_num = sizeof(bb_miiphy_buses) /
127 sizeof(bb_miiphy_buses[0]);
128