1 /*
2 * (C) Copyright 2010
3 * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <miiphy.h>
10
11 #include <asm/io.h>
12
13 struct io_bb_pinset {
14 int mdio;
15 int mdc;
16 };
17
io_bb_mii_init(struct bb_miiphy_bus * bus)18 static int io_bb_mii_init(struct bb_miiphy_bus *bus)
19 {
20 return 0;
21 }
22
io_bb_mdio_active(struct bb_miiphy_bus * bus)23 static int io_bb_mdio_active(struct bb_miiphy_bus *bus)
24 {
25 struct io_bb_pinset *pins = bus->priv;
26
27 out_be32((void *)GPIO0_TCR,
28 in_be32((void *)GPIO0_TCR) | pins->mdio);
29
30 return 0;
31 }
32
io_bb_mdio_tristate(struct bb_miiphy_bus * bus)33 static int io_bb_mdio_tristate(struct bb_miiphy_bus *bus)
34 {
35 struct io_bb_pinset *pins = bus->priv;
36
37 out_be32((void *)GPIO0_TCR,
38 in_be32((void *)GPIO0_TCR) & ~pins->mdio);
39
40 return 0;
41 }
42
io_bb_set_mdio(struct bb_miiphy_bus * bus,int v)43 static int io_bb_set_mdio(struct bb_miiphy_bus *bus, int v)
44 {
45 struct io_bb_pinset *pins = bus->priv;
46
47 if (v)
48 out_be32((void *)GPIO0_OR,
49 in_be32((void *)GPIO0_OR) | pins->mdio);
50 else
51 out_be32((void *)GPIO0_OR,
52 in_be32((void *)GPIO0_OR) & ~pins->mdio);
53
54 return 0;
55 }
56
io_bb_get_mdio(struct bb_miiphy_bus * bus,int * v)57 static int io_bb_get_mdio(struct bb_miiphy_bus *bus, int *v)
58 {
59 struct io_bb_pinset *pins = bus->priv;
60
61 *v = ((in_be32((void *)GPIO0_IR) & pins->mdio) != 0);
62
63 return 0;
64 }
65
io_bb_set_mdc(struct bb_miiphy_bus * bus,int v)66 static int io_bb_set_mdc(struct bb_miiphy_bus *bus, int v)
67 {
68 struct io_bb_pinset *pins = bus->priv;
69
70 if (v)
71 out_be32((void *)GPIO0_OR,
72 in_be32((void *)GPIO0_OR) | pins->mdc);
73 else
74 out_be32((void *)GPIO0_OR,
75 in_be32((void *)GPIO0_OR) & ~pins->mdc);
76
77 return 0;
78 }
79
io_bb_delay(struct bb_miiphy_bus * bus)80 static int io_bb_delay(struct bb_miiphy_bus *bus)
81 {
82 udelay(1);
83
84 return 0;
85 }
86
87 struct io_bb_pinset io_bb_pinsets[] = {
88 {
89 .mdio = CONFIG_SYS_MDIO_PIN,
90 .mdc = CONFIG_SYS_MDC_PIN,
91 },
92 #ifdef CONFIG_SYS_GBIT_MII1_BUSNAME
93 {
94 .mdio = CONFIG_SYS_MDIO1_PIN,
95 .mdc = CONFIG_SYS_MDC1_PIN,
96 },
97 #endif
98 };
99
100 struct bb_miiphy_bus bb_miiphy_buses[] = {
101 {
102 .name = CONFIG_SYS_GBIT_MII_BUSNAME,
103 .init = io_bb_mii_init,
104 .mdio_active = io_bb_mdio_active,
105 .mdio_tristate = io_bb_mdio_tristate,
106 .set_mdio = io_bb_set_mdio,
107 .get_mdio = io_bb_get_mdio,
108 .set_mdc = io_bb_set_mdc,
109 .delay = io_bb_delay,
110 .priv = &io_bb_pinsets[0],
111 },
112 #ifdef CONFIG_SYS_GBIT_MII1_BUSNAME
113 {
114 .name = CONFIG_SYS_GBIT_MII1_BUSNAME,
115 .init = io_bb_mii_init,
116 .mdio_active = io_bb_mdio_active,
117 .mdio_tristate = io_bb_mdio_tristate,
118 .set_mdio = io_bb_set_mdio,
119 .get_mdio = io_bb_get_mdio,
120 .set_mdc = io_bb_set_mdc,
121 .delay = io_bb_delay,
122 .priv = &io_bb_pinsets[1],
123 },
124 #endif
125 };
126
127 int bb_miiphy_buses_num = sizeof(bb_miiphy_buses) /
128 sizeof(bb_miiphy_buses[0]);
129