Commit b0ba512e authored by Petri Gynther's avatar Petri Gynther Committed by David S. Miller

net: bcmgenet: enable driver to work without a device tree

Modify bcmgenet driver so that it can be used on Broadcom 7xxx
MIPS-based STB platforms without a device tree.
Signed-off-by: default avatarPetri Gynther <pgynther@google.com>
Acked-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c3582a2c
......@@ -62,7 +62,6 @@ config BCM63XX_ENET
config BCMGENET
tristate "Broadcom GENET internal MAC support"
depends on OF
select MII
select PHYLIB
select FIXED_PHY if BCMGENET=y
......
......@@ -42,6 +42,7 @@
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/phy.h>
#include <linux/platform_data/bcmgenet.h>
#include <asm/unaligned.h>
......@@ -2586,8 +2587,9 @@ static const struct of_device_id bcmgenet_match[] = {
static int bcmgenet_probe(struct platform_device *pdev)
{
struct bcmgenet_platform_data *pd = pdev->dev.platform_data;
struct device_node *dn = pdev->dev.of_node;
const struct of_device_id *of_id;
const struct of_device_id *of_id = NULL;
struct bcmgenet_priv *priv;
struct net_device *dev;
const void *macaddr;
......@@ -2601,9 +2603,11 @@ static int bcmgenet_probe(struct platform_device *pdev)
return -ENOMEM;
}
if (dn) {
of_id = of_match_node(bcmgenet_match, dn);
if (!of_id)
return -EINVAL;
}
priv = netdev_priv(dev);
priv->irq0 = platform_get_irq(pdev, 0);
......@@ -2615,12 +2619,16 @@ static int bcmgenet_probe(struct platform_device *pdev)
goto err;
}
if (dn) {
macaddr = of_get_mac_address(dn);
if (!macaddr) {
dev_err(&pdev->dev, "can't find MAC address\n");
err = -EINVAL;
goto err;
}
} else {
macaddr = pd->mac_address;
}
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
priv->base = devm_ioremap_resource(&pdev->dev, r);
......@@ -2659,7 +2667,10 @@ static int bcmgenet_probe(struct platform_device *pdev)
priv->dev = dev;
priv->pdev = pdev;
if (of_id)
priv->version = (enum bcmgenet_version)of_id->data;
else
priv->version = pd->genet_version;
priv->clk = devm_clk_get(&priv->pdev->dev, "enet");
if (IS_ERR(priv->clk))
......
......@@ -23,6 +23,7 @@
#include <linux/of.h>
#include <linux/of_net.h>
#include <linux/of_mdio.h>
#include <linux/platform_data/bcmgenet.h>
#include "bcmgenet.h"
......@@ -312,6 +313,16 @@ static int bcmgenet_mii_probe(struct net_device *dev)
u32 phy_flags;
int ret;
/* Communicate the integrated PHY revision */
phy_flags = priv->gphy_rev;
/* Initialize link state variables that bcmgenet_mii_setup() uses */
priv->old_link = -1;
priv->old_speed = -1;
priv->old_duplex = -1;
priv->old_pause = -1;
if (dn) {
if (priv->phydev) {
pr_info("PHY already attached\n");
return 0;
......@@ -328,21 +339,23 @@ static int bcmgenet_mii_probe(struct net_device *dev)
priv->phy_dn = of_node_get(dn);
}
/* Communicate the integrated PHY revision */
phy_flags = priv->gphy_rev;
/* Initialize link state variables that bcmgenet_mii_setup() uses */
priv->old_link = -1;
priv->old_speed = -1;
priv->old_duplex = -1;
priv->old_pause = -1;
phydev = of_phy_connect(dev, priv->phy_dn, bcmgenet_mii_setup,
phy_flags, priv->phy_interface);
if (!phydev) {
pr_err("could not attach to PHY\n");
return -ENODEV;
}
} else {
phydev = priv->phydev;
phydev->dev_flags = phy_flags;
ret = phy_connect_direct(dev, phydev, bcmgenet_mii_setup,
priv->phy_interface);
if (ret) {
pr_err("could not attach to PHY\n");
return -ENODEV;
}
}
priv->phydev = phydev;
......@@ -438,6 +451,75 @@ static int bcmgenet_mii_of_init(struct bcmgenet_priv *priv)
return 0;
}
static int bcmgenet_mii_pd_init(struct bcmgenet_priv *priv)
{
struct device *kdev = &priv->pdev->dev;
struct bcmgenet_platform_data *pd = kdev->platform_data;
struct mii_bus *mdio = priv->mii_bus;
struct phy_device *phydev;
int ret;
if (pd->phy_interface != PHY_INTERFACE_MODE_MOCA && pd->mdio_enabled) {
/*
* Internal or external PHY with MDIO access
*/
if (pd->phy_address >= 0 && pd->phy_address < PHY_MAX_ADDR)
mdio->phy_mask = ~(1 << pd->phy_address);
else
mdio->phy_mask = 0;
ret = mdiobus_register(mdio);
if (ret) {
dev_err(kdev, "failed to register MDIO bus\n");
return ret;
}
if (pd->phy_address >= 0 && pd->phy_address < PHY_MAX_ADDR)
phydev = mdio->phy_map[pd->phy_address];
else
phydev = phy_find_first(mdio);
if (!phydev) {
dev_err(kdev, "failed to register PHY device\n");
mdiobus_unregister(mdio);
return -ENODEV;
}
} else {
/*
* MoCA port or no MDIO access.
* Use fixed PHY to represent the link layer.
*/
struct fixed_phy_status fphy_status = {
.link = 1,
.speed = pd->phy_speed,
.duplex = pd->phy_duplex,
.pause = 0,
.asym_pause = 0,
};
phydev = fixed_phy_register(PHY_POLL, &fphy_status, NULL);
if (!phydev || IS_ERR(phydev)) {
dev_err(kdev, "failed to register fixed PHY device\n");
return -ENODEV;
}
}
priv->phydev = phydev;
priv->phy_interface = pd->phy_interface;
return 0;
}
static int bcmgenet_mii_bus_init(struct bcmgenet_priv *priv)
{
struct device_node *dn = priv->pdev->dev.of_node;
if (dn)
return bcmgenet_mii_of_init(priv);
else
return bcmgenet_mii_pd_init(priv);
}
int bcmgenet_mii_init(struct net_device *dev)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
......@@ -447,7 +529,7 @@ int bcmgenet_mii_init(struct net_device *dev)
if (ret)
return ret;
ret = bcmgenet_mii_of_init(priv);
ret = bcmgenet_mii_bus_init(priv);
if (ret)
goto out_free;
......
#ifndef __LINUX_PLATFORM_DATA_BCMGENET_H__
#define __LINUX_PLATFORM_DATA_BCMGENET_H__
#include <linux/types.h>
#include <linux/if_ether.h>
#include <linux/phy.h>
struct bcmgenet_platform_data {
bool mdio_enabled;
phy_interface_t phy_interface;
int phy_address;
int phy_speed;
int phy_duplex;
u8 mac_address[ETH_ALEN];
int genet_version;
};
#endif
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