c01055227351c2165536c143cb090ae9ba4a4454
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
);
62 int fe_connect_phy_node(struct fe_priv
*priv
, struct device_node
*phy_node
)
64 const __be32
*_port
= NULL
;
65 struct phy_device
*phydev
;
68 _port
= of_get_property(phy_node
, "reg", NULL
);
70 if (!_port
|| (be32_to_cpu(*_port
) >= 0x20)) {
71 pr_err("%s: invalid port id\n", phy_node
->name
);
74 port
= be32_to_cpu(*_port
);
75 phy_mode
= of_get_phy_mode(phy_node
);
77 dev_err(priv
->dev
, "incorrect phy-mode %d\n", phy_mode
);
78 priv
->phy
->phy_node
[port
] = NULL
;
82 phydev
= of_phy_connect(priv
->netdev
, phy_node
, fe_phy_link_adjust
,
85 dev_err(priv
->dev
, "could not connect to PHY\n");
86 priv
->phy
->phy_node
[port
] = NULL
;
87 return PTR_ERR(phydev
);
90 phydev
->supported
&= PHY_GBIT_FEATURES
;
91 phydev
->advertising
= phydev
->supported
;
92 phydev
->no_auto_carrier_off
= 1;
95 "connected port %d to PHY at %s [uid=%08x, driver=%s]\n",
96 port
, dev_name(&phydev
->mdio
.dev
), phydev
->phy_id
,
99 priv
->phy
->phy
[port
] = phydev
;
100 priv
->link
[port
] = 0;
105 static void phy_init(struct fe_priv
*priv
, struct phy_device
*phy
)
107 phy_attach(priv
->netdev
, dev_name(&phy
->mdio
.dev
), PHY_INTERFACE_MODE_MII
);
109 phy
->autoneg
= AUTONEG_ENABLE
;
112 phy
->supported
&= PHY_BASIC_FEATURES
;
113 phy
->advertising
= phy
->supported
| ADVERTISED_Autoneg
;
118 static int fe_phy_connect(struct fe_priv
*priv
)
122 for (i
= 0; i
< 8; i
++) {
123 if (priv
->phy
->phy_node
[i
]) {
124 if (!priv
->phy_dev
) {
125 priv
->phy_dev
= priv
->phy
->phy
[i
];
126 priv
->phy_flags
= FE_PHY_FLAG_PORT
;
128 } else if (priv
->mii_bus
&& mdiobus_get_phy(priv
->mii_bus
, i
)) {
129 phy_init(priv
, mdiobus_get_phy(priv
->mii_bus
, i
));
130 if (!priv
->phy_dev
) {
131 priv
->phy_dev
= mdiobus_get_phy(priv
->mii_bus
, i
);
132 priv
->phy_flags
= FE_PHY_FLAG_ATTACH
;
140 static void fe_phy_disconnect(struct fe_priv
*priv
)
145 for (i
= 0; i
< 8; i
++)
146 if (priv
->phy
->phy_fixed
[i
]) {
147 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
149 if (priv
->soc
->mdio_adjust_link
)
150 priv
->soc
->mdio_adjust_link(priv
, i
);
151 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
152 } else if (priv
->phy
->phy
[i
]) {
153 phy_disconnect(priv
->phy
->phy
[i
]);
154 } else if (priv
->mii_bus
&& mdiobus_get_phy(priv
->mii_bus
, i
)) {
155 phy_detach(mdiobus_get_phy(priv
->mii_bus
, i
));
159 static void fe_phy_start(struct fe_priv
*priv
)
164 for (i
= 0; i
< 8; i
++) {
165 if (priv
->phy
->phy_fixed
[i
]) {
166 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
168 if (priv
->soc
->mdio_adjust_link
)
169 priv
->soc
->mdio_adjust_link(priv
, i
);
170 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
171 } else if (priv
->phy
->phy
[i
]) {
172 phy_start(priv
->phy
->phy
[i
]);
177 static void fe_phy_stop(struct fe_priv
*priv
)
182 for (i
= 0; i
< 8; i
++)
183 if (priv
->phy
->phy_fixed
[i
]) {
184 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
186 if (priv
->soc
->mdio_adjust_link
)
187 priv
->soc
->mdio_adjust_link(priv
, i
);
188 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
189 } else if (priv
->phy
->phy
[i
]) {
190 phy_stop(priv
->phy
->phy
[i
]);
194 static struct fe_phy phy_ralink
= {
195 .connect
= fe_phy_connect
,
196 .disconnect
= fe_phy_disconnect
,
197 .start
= fe_phy_start
,
201 int fe_mdio_init(struct fe_priv
*priv
)
203 struct device_node
*mii_np
;
206 if (!priv
->soc
->mdio_read
|| !priv
->soc
->mdio_write
)
209 spin_lock_init(&phy_ralink
.lock
);
210 priv
->phy
= &phy_ralink
;
212 mii_np
= of_get_child_by_name(priv
->dev
->of_node
, "mdio-bus");
214 dev_err(priv
->dev
, "no %s child node found", "mdio-bus");
218 if (!of_device_is_available(mii_np
)) {
223 priv
->mii_bus
= mdiobus_alloc();
224 if (!priv
->mii_bus
) {
229 priv
->mii_bus
->name
= "mdio";
230 priv
->mii_bus
->read
= priv
->soc
->mdio_read
;
231 priv
->mii_bus
->write
= priv
->soc
->mdio_write
;
232 priv
->mii_bus
->reset
= fe_mdio_reset
;
233 priv
->mii_bus
->priv
= priv
;
234 priv
->mii_bus
->parent
= priv
->dev
;
236 snprintf(priv
->mii_bus
->id
, MII_BUS_ID_SIZE
, "%s", mii_np
->name
);
237 err
= of_mdiobus_register(priv
->mii_bus
, mii_np
);
244 kfree(priv
->mii_bus
);
247 priv
->mii_bus
= NULL
;
251 void fe_mdio_cleanup(struct fe_priv
*priv
)
256 mdiobus_unregister(priv
->mii_bus
);
257 of_node_put(priv
->mii_bus
->dev
.of_node
);
258 kfree(priv
->mii_bus
);