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
;
67 phy_interface_t phy_mode
= PHY_INTERFACE_MODE_NA
;
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 of_get_phy_mode(phy_node
, &phy_mode
);
77 if (phy_mode
== PHY_INTERFACE_MODE_NA
) {
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 phy_set_max_speed(phydev
, SPEED_1000
);
92 linkmode_copy(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
;
114 phy_set_max_speed(phy
, IS_ENABLED(CONFIG_NET_RALINK_MDIO_MT7620
) ?
117 linkmode_copy(phy
->advertising
, phy
->supported
);
118 linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT
, phy
->advertising
);
123 static int fe_phy_connect(struct fe_priv
*priv
)
127 for (i
= 0; i
< 8; i
++) {
128 if (priv
->phy
->phy_node
[i
]) {
129 if (!priv
->phy_dev
) {
130 priv
->phy_dev
= priv
->phy
->phy
[i
];
131 priv
->phy_flags
= FE_PHY_FLAG_PORT
;
133 } else if (priv
->mii_bus
) {
134 struct phy_device
*phydev
;
136 phydev
= mdiobus_get_phy(priv
->mii_bus
, i
);
137 if (!phydev
|| phydev
->attached_dev
)
140 phy_init(priv
, phydev
);
141 if (!priv
->phy_dev
) {
142 priv
->phy_dev
= mdiobus_get_phy(priv
->mii_bus
, i
);
143 priv
->phy_flags
= FE_PHY_FLAG_ATTACH
;
151 static void fe_phy_disconnect(struct fe_priv
*priv
)
156 for (i
= 0; i
< 8; i
++)
157 if (priv
->phy
->phy_fixed
[i
]) {
158 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
160 if (priv
->soc
->mdio_adjust_link
)
161 priv
->soc
->mdio_adjust_link(priv
, i
);
162 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
163 } else if (priv
->phy
->phy
[i
]) {
164 phy_disconnect(priv
->phy
->phy
[i
]);
165 } else if (priv
->mii_bus
&& mdiobus_get_phy(priv
->mii_bus
, i
)) {
166 phy_detach(mdiobus_get_phy(priv
->mii_bus
, i
));
170 static void fe_phy_start(struct fe_priv
*priv
)
175 for (i
= 0; i
< 8; i
++) {
176 if (priv
->phy
->phy_fixed
[i
]) {
177 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
179 if (priv
->soc
->mdio_adjust_link
)
180 priv
->soc
->mdio_adjust_link(priv
, i
);
181 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
182 } else if (priv
->phy
->phy
[i
]) {
183 phy_start(priv
->phy
->phy
[i
]);
188 static void fe_phy_stop(struct fe_priv
*priv
)
193 for (i
= 0; i
< 8; i
++)
194 if (priv
->phy
->phy_fixed
[i
]) {
195 spin_lock_irqsave(&priv
->phy
->lock
, flags
);
197 if (priv
->soc
->mdio_adjust_link
)
198 priv
->soc
->mdio_adjust_link(priv
, i
);
199 spin_unlock_irqrestore(&priv
->phy
->lock
, flags
);
200 } else if (priv
->phy
->phy
[i
]) {
201 phy_stop(priv
->phy
->phy
[i
]);
205 static struct fe_phy phy_ralink
= {
206 .connect
= fe_phy_connect
,
207 .disconnect
= fe_phy_disconnect
,
208 .start
= fe_phy_start
,
212 int fe_mdio_init(struct fe_priv
*priv
)
214 struct device_node
*mii_np
;
217 if (!priv
->soc
->mdio_read
|| !priv
->soc
->mdio_write
)
220 spin_lock_init(&phy_ralink
.lock
);
221 priv
->phy
= &phy_ralink
;
223 mii_np
= of_get_child_by_name(priv
->dev
->of_node
, "mdio-bus");
225 dev_err(priv
->dev
, "no %s child node found", "mdio-bus");
230 if (!of_device_is_available(mii_np
)) {
235 priv
->mii_bus
= mdiobus_alloc();
236 if (!priv
->mii_bus
) {
241 priv
->mii_bus
->name
= "mdio";
242 priv
->mii_bus
->read
= priv
->soc
->mdio_read
;
243 priv
->mii_bus
->write
= priv
->soc
->mdio_write
;
244 priv
->mii_bus
->reset
= fe_mdio_reset
;
245 priv
->mii_bus
->priv
= priv
;
246 priv
->mii_bus
->parent
= priv
->dev
;
248 snprintf(priv
->mii_bus
->id
, MII_BUS_ID_SIZE
, "%s", mii_np
->name
);
249 err
= of_mdiobus_register(priv
->mii_bus
, mii_np
);
256 kfree(priv
->mii_bus
);
260 dev_info(priv
->dev
, "%s disabled", "mdio-bus");
261 priv
->mii_bus
= NULL
;
265 void fe_mdio_cleanup(struct fe_priv
*priv
)
270 mdiobus_unregister(priv
->mii_bus
);
271 of_node_put(priv
->mii_bus
->dev
.of_node
);
272 kfree(priv
->mii_bus
);