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Sergey Kubushync74b2102007-08-10 20:26:18 +02001/*
2 * Intel LXT971/LXT972 PHY Driver for TI DaVinci
3 * (TMS320DM644x) based boards.
4 *
5 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
6 *
7 * --------------------------------------------------------
8 *
9 * See file CREDITS for list of people who contributed to this
10 * project.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * MA 02111-1307 USA
26 */
27
28#include <common.h>
29#include <net.h>
30#include <lxt971a.h>
31#include <asm/arch/emac_defs.h>
32
33#ifdef CONFIG_DRIVER_TI_EMAC
34
35#ifdef CONFIG_CMD_NET
36
37int lxt972_is_phy_connected(int phy_addr)
38{
39 u_int16_t id1, id2;
40
41 if (!dm644x_eth_phy_read(phy_addr, PHY_COMMON_ID1, &id1))
42 return(0);
43 if (!dm644x_eth_phy_read(phy_addr, PHY_COMMON_ID2, &id2))
44 return(0);
45
46 if ((id1 == (0x0013)) && ((id2 & 0xfff0) == 0x78e0))
47 return(1);
48
49 return(0);
50}
51
52int lxt972_get_link_speed(int phy_addr)
53{
54 u_int16_t stat1, tmp;
55 volatile emac_regs* emac = (emac_regs *)EMAC_BASE_ADDR;
56
57 if (!dm644x_eth_phy_read(phy_addr, PHY_LXT971_STAT2, &stat1))
58 return(0);
59
60 if (!(stat1 & PHY_LXT971_STAT2_LINK)) /* link up? */
61 return(0);
62
63 if (!dm644x_eth_phy_read(phy_addr, PHY_LXT971_DIG_CFG, &tmp))
64 return(0);
65
66 tmp |= PHY_LXT971_DIG_CFG_MII_DRIVE;
67
68 dm644x_eth_phy_write(phy_addr, PHY_LXT971_DIG_CFG, tmp);
69 /* Read back */
70 if (!dm644x_eth_phy_read(phy_addr, PHY_LXT971_DIG_CFG, &tmp))
71 return(0);
72
73
74 /* Speed doesn't matter, there is no setting for it in EMAC... */
75 if (stat1 & PHY_LXT971_STAT2_100BTX) {
76 if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
77 /* set DM644x EMAC for Full Duplex */
78 emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE | EMAC_MACCONTROL_FULLDUPLEX_ENABLE;
79 } else {
80 /*set DM644x EMAC for Half Duplex */
81 emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE;
82 }
83
84 return(1);
85 } else {
86 if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
87 /* set DM644x EMAC for Full Duplex */
88 emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE | EMAC_MACCONTROL_FULLDUPLEX_ENABLE;
89 } else {
90 /*set DM644x EMAC for Half Duplex */
91 emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE;
92 }
93
94 return(1);
95 }
96
97 return(0);
98}
99
100
101int lxt972_init_phy(int phy_addr)
102{
103 int ret = 1;
104
105 if (!lxt972_get_link_speed(phy_addr)) {
106 /* Try another time */
107 ret = lxt972_get_link_speed(phy_addr);
108 }
109
110 /* Disable PHY Interrupts */
111 dm644x_eth_phy_write(phy_addr, PHY_LXT971_INT_ENABLE, 0);
112
113 return(ret);
114}
115
116
117int lxt972_auto_negotiate(int phy_addr)
118{
119 u_int16_t tmp;
120
121
122 if (!dm644x_eth_phy_read(phy_addr, PHY_COMMON_CTRL, &tmp))
123 return(0);
124
125 /* Restart Auto_negotiation */
126 tmp |= PHY_COMMON_CTRL_RES_AUTO;
127 dm644x_eth_phy_write(phy_addr, PHY_COMMON_CTRL, tmp);
128
129 /*check AutoNegotiate complete */
130 udelay (10000);
131 if (!dm644x_eth_phy_read(phy_addr, PHY_COMMON_STAT, &tmp))
132 return(0);
133
134 if (!(tmp & PHY_COMMON_STAT_AN_COMP))
135 return(0);
136
137 return (lxt972_get_link_speed(phy_addr));
138}
139
140#endif /* CONFIG_CMD_NET */
141
142#endif /* CONFIG_DRIVER_ETHER */