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
, int port
)
65 const __be32
*_phy_addr
= NULL
;
66 struct phy_device
*phydev
;
69 _phy_addr
= of_get_property(phy_node
, "reg", NULL
);
71 if (!_phy_addr
|| (be32_to_cpu(*_phy_addr
) >= 0x20)) {
72 pr_err("%s: invalid phy id\n", phy_node
->name
);
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
;
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
&= IS_ENABLED(CONFIG_NET_RALINK_MDIO_MT7620
) ?
114 PHY_GBIT_FEATURES
: PHY_BASIC_FEATURES
;
115 phy
->advertising
= phy
->supported
| ADVERTISED_Autoneg
;
120 static int fe_phy_connect(struct fe_priv
*priv
)
124 for (i
= 0; i
< 8; i
++) {
125 if (priv
->phy
->phy_node
[i
]) {
126 if (!priv
->phy_dev
) {
127 priv
->phy_dev
= priv
->phy
->phy
[i
];
128 priv
->phy_flags
= FE_PHY_FLAG_PORT
;
130 } else if (priv
->mii_bus
) {
131 struct phy_device
*phydev
;
133 phydev
= mdiobus_get_phy(priv
->mii_bus
, i
);
134 if (!phydev
|| phydev
->attached_dev
)
137 phy_init(priv
, phydev
);
138 if (!priv
->phy_dev
) {
139 priv
->phy_dev
= mdiobus_get_phy(priv
->mii_bus
, i
);
140 priv
->phy_flags
= FE_PHY_FLAG_ATTACH
;
148 static void fe_phy_disconnect(struct fe_priv
*priv
)
153 for (i
= 0; i
< 8; i
++)
154 if (priv
->phy
->phy_fixed
[i
]) {
155 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
157 if (priv
->soc
->mdio_adjust_link
)
158 priv
->soc
->mdio_adjust_link(priv
, i
);
159 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
160 } else if (priv
->phy
->phy
[i
]) {
161 phy_disconnect(priv
->phy
->phy
[i
]);
162 } else if (priv
->mii_bus
&& mdiobus_get_phy(priv
->mii_bus
, i
)) {
163 phy_detach(mdiobus_get_phy(priv
->mii_bus
, i
));
167 static void fe_phy_start(struct fe_priv
*priv
)
172 for (i
= 0; i
< 8; i
++) {
173 if (priv
->phy
->phy_fixed
[i
]) {
174 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
176 if (priv
->soc
->mdio_adjust_link
)
177 priv
->soc
->mdio_adjust_link(priv
, i
);
178 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
179 } else if (priv
->phy
->phy
[i
]) {
180 phy_start(priv
->phy
->phy
[i
]);
185 static void fe_phy_stop(struct fe_priv
*priv
)
190 for (i
= 0; i
< 8; i
++)
191 if (priv
->phy
->phy_fixed
[i
]) {
192 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
194 if (priv
->soc
->mdio_adjust_link
)
195 priv
->soc
->mdio_adjust_link(priv
, i
);
196 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
197 } else if (priv
->phy
->phy
[i
]) {
198 phy_stop(priv
->phy
->phy
[i
]);
202 static struct fe_phy phy_ralink
= {
203 .connect
= fe_phy_connect
,
204 .disconnect
= fe_phy_disconnect
,
205 .start
= fe_phy_start
,
209 int fe_mdio_init(struct fe_priv
*priv
)
211 struct device_node
*mii_np
;
214 if (!priv
->soc
->mdio_read
|| !priv
->soc
->mdio_write
)
217 spin_lock_init(&phy_ralink
.lock
);
218 priv
->phy
= &phy_ralink
;
220 mii_np
= of_get_child_by_name(priv
->dev
->of_node
, "mdio-bus");
222 dev_err(priv
->dev
, "no %s child node found", "mdio-bus");
226 if (!of_device_is_available(mii_np
)) {
231 priv
->mii_bus
= mdiobus_alloc();
232 if (!priv
->mii_bus
) {
237 priv
->mii_bus
->name
= "mdio";
238 priv
->mii_bus
->read
= priv
->soc
->mdio_read
;
239 priv
->mii_bus
->write
= priv
->soc
->mdio_write
;
240 priv
->mii_bus
->reset
= fe_mdio_reset
;
241 priv
->mii_bus
->priv
= priv
;
242 priv
->mii_bus
->parent
= priv
->dev
;
244 snprintf(priv
->mii_bus
->id
, MII_BUS_ID_SIZE
, "%s", mii_np
->name
);
245 err
= of_mdiobus_register(priv
->mii_bus
, mii_np
);
252 kfree(priv
->mii_bus
);
255 priv
->mii_bus
= NULL
;
259 void fe_mdio_cleanup(struct fe_priv
*priv
)
264 mdiobus_unregister(priv
->mii_bus
);
265 of_node_put(priv
->mii_bus
->dev
.of_node
);
266 kfree(priv
->mii_bus
);