1 /* This program is free software; you can redistribute it and/or modify
2 * it under the terms of the GNU General Public License as published by
3 * the Free Software Foundation; version 2 of the License
5 * Copyright (C) 2009-2015 John Crispin <blogic@openwrt.org>
6 * Copyright (C) 2009-2015 Felix Fietkau <nbd@nbd.name>
7 * Copyright (C) 2013-2015 Michael Lee <igvtee@gmail.com>
10 #include <linux/module.h>
11 #include <linux/kernel.h>
12 #include <linux/phy.h>
13 #include <linux/of_net.h>
14 #include <linux/of_mdio.h>
16 #include "mtk_eth_soc.h"
19 static int fe_mdio_reset(struct mii_bus
*bus
)
25 static void fe_phy_link_adjust(struct net_device
*dev
)
27 struct fe_priv
*priv
= netdev_priv(dev
);
31 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
32 for (i
= 0; i
< 8; i
++) {
33 if (priv
->phy
->phy_node
[i
]) {
34 struct phy_device
*phydev
= priv
->phy
->phy
[i
];
35 int status_change
= 0;
38 if (priv
->phy
->duplex
[i
] != phydev
->duplex
||
39 priv
->phy
->speed
[i
] != phydev
->speed
)
42 if (phydev
->link
!= priv
->link
[i
])
45 switch (phydev
->speed
) {
49 priv
->link
[i
] = phydev
->link
;
50 priv
->phy
->duplex
[i
] = phydev
->duplex
;
51 priv
->phy
->speed
[i
] = phydev
->speed
;
54 priv
->soc
->mdio_adjust_link
)
55 priv
->soc
->mdio_adjust_link(priv
, i
);
60 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
63 int fe_connect_phy_node(struct fe_priv
*priv
, struct device_node
*phy_node
)
65 const __be32
*_port
= NULL
;
66 struct phy_device
*phydev
;
69 _port
= of_get_property(phy_node
, "reg", NULL
);
71 if (!_port
|| (be32_to_cpu(*_port
) >= 0x20)) {
72 pr_err("%s: invalid port id\n", phy_node
->name
);
75 port
= be32_to_cpu(*_port
);
76 phy_mode
= of_get_phy_mode(phy_node
);
78 dev_err(priv
->dev
, "incorrect phy-mode %d\n", phy_mode
);
79 priv
->phy
->phy_node
[port
] = NULL
;
83 phydev
= of_phy_connect(priv
->netdev
, phy_node
, fe_phy_link_adjust
,
86 dev_err(priv
->dev
, "could not connect to PHY\n");
87 priv
->phy
->phy_node
[port
] = NULL
;
88 return PTR_ERR(phydev
);
91 phydev
->supported
&= PHY_GBIT_FEATURES
;
92 phydev
->advertising
= phydev
->supported
;
93 phydev
->no_auto_carrier_off
= 1;
96 "connected port %d to PHY at %s [uid=%08x, driver=%s]\n",
97 port
, dev_name(&phydev
->mdio
.dev
), phydev
->phy_id
,
100 priv
->phy
->phy
[port
] = phydev
;
101 priv
->link
[port
] = 0;
106 static void phy_init(struct fe_priv
*priv
, struct phy_device
*phy
)
108 phy_attach(priv
->netdev
, dev_name(&phy
->mdio
.dev
), PHY_INTERFACE_MODE_MII
);
110 phy
->autoneg
= AUTONEG_ENABLE
;
113 phy
->supported
&= PHY_BASIC_FEATURES
;
114 phy
->advertising
= phy
->supported
| ADVERTISED_Autoneg
;
119 static int fe_phy_connect(struct fe_priv
*priv
)
123 for (i
= 0; i
< 8; i
++) {
124 if (priv
->phy
->phy_node
[i
]) {
125 if (!priv
->phy_dev
) {
126 priv
->phy_dev
= priv
->phy
->phy
[i
];
127 priv
->phy_flags
= FE_PHY_FLAG_PORT
;
129 } else if (priv
->mii_bus
&& mdiobus_get_phy(priv
->mii_bus
, i
)) {
130 phy_init(priv
, mdiobus_get_phy(priv
->mii_bus
, i
));
131 if (!priv
->phy_dev
) {
132 priv
->phy_dev
= mdiobus_get_phy(priv
->mii_bus
, i
);
133 priv
->phy_flags
= FE_PHY_FLAG_ATTACH
;
141 static void fe_phy_disconnect(struct fe_priv
*priv
)
146 for (i
= 0; i
< 8; i
++)
147 if (priv
->phy
->phy_fixed
[i
]) {
148 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
150 if (priv
->soc
->mdio_adjust_link
)
151 priv
->soc
->mdio_adjust_link(priv
, i
);
152 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
153 } else if (priv
->phy
->phy
[i
]) {
154 phy_disconnect(priv
->phy
->phy
[i
]);
155 } else if (priv
->mii_bus
&& mdiobus_get_phy(priv
->mii_bus
, i
)) {
156 phy_detach(mdiobus_get_phy(priv
->mii_bus
, i
));
160 static void fe_phy_start(struct fe_priv
*priv
)
165 for (i
= 0; i
< 8; i
++) {
166 if (priv
->phy
->phy_fixed
[i
]) {
167 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
169 if (priv
->soc
->mdio_adjust_link
)
170 priv
->soc
->mdio_adjust_link(priv
, i
);
171 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
172 } else if (priv
->phy
->phy
[i
]) {
173 phy_start(priv
->phy
->phy
[i
]);
178 static void fe_phy_stop(struct fe_priv
*priv
)
183 for (i
= 0; i
< 8; i
++)
184 if (priv
->phy
->phy_fixed
[i
]) {
185 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
187 if (priv
->soc
->mdio_adjust_link
)
188 priv
->soc
->mdio_adjust_link(priv
, i
);
189 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
190 } else if (priv
->phy
->phy
[i
]) {
191 phy_stop(priv
->phy
->phy
[i
]);
195 static struct fe_phy phy_ralink
= {
196 .connect
= fe_phy_connect
,
197 .disconnect
= fe_phy_disconnect
,
198 .start
= fe_phy_start
,
202 int fe_mdio_init(struct fe_priv
*priv
)
204 struct device_node
*mii_np
;
207 if (!priv
->soc
->mdio_read
|| !priv
->soc
->mdio_write
)
210 spin_lock_init(&phy_ralink
.lock
);
211 priv
->phy
= &phy_ralink
;
213 mii_np
= of_get_child_by_name(priv
->dev
->of_node
, "mdio-bus");
215 dev_err(priv
->dev
, "no %s child node found", "mdio-bus");
219 if (!of_device_is_available(mii_np
)) {
224 priv
->mii_bus
= mdiobus_alloc();
225 if (!priv
->mii_bus
) {
230 priv
->mii_bus
->name
= "mdio";
231 priv
->mii_bus
->read
= priv
->soc
->mdio_read
;
232 priv
->mii_bus
->write
= priv
->soc
->mdio_write
;
233 priv
->mii_bus
->reset
= fe_mdio_reset
;
234 priv
->mii_bus
->priv
= priv
;
235 priv
->mii_bus
->parent
= priv
->dev
;
237 snprintf(priv
->mii_bus
->id
, MII_BUS_ID_SIZE
, "%s", mii_np
->name
);
238 err
= of_mdiobus_register(priv
->mii_bus
, mii_np
);
245 kfree(priv
->mii_bus
);
248 priv
->mii_bus
= NULL
;
252 void fe_mdio_cleanup(struct fe_priv
*priv
)
257 mdiobus_unregister(priv
->mii_bus
);
258 of_node_put(priv
->mii_bus
->dev
.of_node
);
259 kfree(priv
->mii_bus
);