Commit fe192a49 authored by Grant Likely's avatar Grant Likely Committed by David S. Miller

net: Rework gianfar driver to use of_mdio infrastructure.

This patch simplifies the driver by making use of more common code.

Tested on Freescale MPC8349emitxgp eval board
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Acked-by: default avatarAndy Fleming <afleming@freescale.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 324931ba
......@@ -75,6 +75,7 @@
#include <linux/if_vlan.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/of_mdio.h>
#include <linux/of_platform.h>
#include <linux/ip.h>
#include <linux/tcp.h>
......@@ -168,17 +169,13 @@ static inline int gfar_uses_fcb(struct gfar_private *priv)
static int gfar_of_init(struct net_device *dev)
{
struct device_node *phy, *mdio;
const unsigned int *id;
const char *model;
const char *ctype;
const void *mac_addr;
const phandle *ph;
u64 addr, size;
int err = 0;
struct gfar_private *priv = netdev_priv(dev);
struct device_node *np = priv->node;
char bus_name[MII_BUS_ID_SIZE];
const u32 *stash;
const u32 *stash_len;
const u32 *stash_idx;
......@@ -264,8 +261,8 @@ static int gfar_of_init(struct net_device *dev)
if (of_get_property(np, "fsl,magic-packet", NULL))
priv->device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET;
ph = of_get_property(np, "phy-handle", NULL);
if (ph == NULL) {
priv->phy_node = of_parse_phandle(np, "phy-handle", 0);
if (!priv->phy_node) {
u32 *fixed_link;
fixed_link = (u32 *)of_get_property(np, "fixed-link", NULL);
......@@ -273,57 +270,10 @@ static int gfar_of_init(struct net_device *dev)
err = -ENODEV;
goto err_out;
}
snprintf(priv->phy_bus_id, sizeof(priv->phy_bus_id),
PHY_ID_FMT, "0", fixed_link[0]);
} else {
phy = of_find_node_by_phandle(*ph);
if (phy == NULL) {
err = -ENODEV;
goto err_out;
}
mdio = of_get_parent(phy);
id = of_get_property(phy, "reg", NULL);
of_node_put(phy);
fsl_pq_mdio_bus_name(bus_name, mdio);
of_node_put(mdio);
snprintf(priv->phy_bus_id, sizeof(priv->phy_bus_id), "%s:%02x",
bus_name, *id);
}
/* Find the TBI PHY. If it's not there, we don't support SGMII */
ph = of_get_property(np, "tbi-handle", NULL);
if (ph) {
struct device_node *tbi = of_find_node_by_phandle(*ph);
struct of_device *ofdev;
struct mii_bus *bus;
if (!tbi)
return 0;
mdio = of_get_parent(tbi);
if (!mdio)
return 0;
ofdev = of_find_device_by_node(mdio);
of_node_put(mdio);
id = of_get_property(tbi, "reg", NULL);
if (!id)
return 0;
of_node_put(tbi);
bus = dev_get_drvdata(&ofdev->dev);
priv->tbiphy = bus->phy_map[*id];
}
priv->tbi_node = of_parse_phandle(np, "tbi-handle", 0);
return 0;
......@@ -529,6 +479,10 @@ static int gfar_probe(struct of_device *ofdev,
register_fail:
iounmap(priv->regs);
regs_fail:
if (priv->phy_node)
of_node_put(priv->phy_node);
if (priv->tbi_node)
of_node_put(priv->tbi_node);
free_netdev(dev);
return err;
}
......@@ -537,6 +491,11 @@ static int gfar_remove(struct of_device *ofdev)
{
struct gfar_private *priv = dev_get_drvdata(&ofdev->dev);
if (priv->phy_node)
of_node_put(priv->phy_node);
if (priv->tbi_node)
of_node_put(priv->tbi_node);
dev_set_drvdata(&ofdev->dev, NULL);
iounmap(priv->regs);
......@@ -690,7 +649,6 @@ static int init_phy(struct net_device *dev)
uint gigabit_support =
priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT ?
SUPPORTED_1000baseT_Full : 0;
struct phy_device *phydev;
phy_interface_t interface;
priv->oldlink = 0;
......@@ -699,21 +657,21 @@ static int init_phy(struct net_device *dev)
interface = gfar_get_interface(dev);
phydev = phy_connect(dev, priv->phy_bus_id, &adjust_link, 0, interface);
if (priv->phy_node) {
priv->phydev = of_phy_connect(dev, priv->phy_node, &adjust_link,
0, interface);
if (!priv->phydev) {
dev_err(&dev->dev, "error: Could not attach to PHY\n");
return -ENODEV;
}
}
if (interface == PHY_INTERFACE_MODE_SGMII)
gfar_configure_serdes(dev);
if (IS_ERR(phydev)) {
printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
return PTR_ERR(phydev);
}
/* Remove any features not supported by the controller */
phydev->supported &= (GFAR_SUPPORTED | gigabit_support);
phydev->advertising = phydev->supported;
priv->phydev = phydev;
priv->phydev->supported &= (GFAR_SUPPORTED | gigabit_support);
priv->phydev->advertising = priv->phydev->supported;
return 0;
}
......@@ -730,10 +688,17 @@ static int init_phy(struct net_device *dev)
static void gfar_configure_serdes(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
struct phy_device *tbiphy;
if (!priv->tbi_node) {
dev_warn(&dev->dev, "error: SGMII mode requires that the "
"device tree specify a tbi-handle\n");
return;
}
if (!priv->tbiphy) {
printk(KERN_WARNING "SGMII mode requires that the device "
"tree specify a tbi-handle\n");
tbiphy = of_phy_find_device(priv->tbi_node);
if (!tbiphy) {
dev_err(&dev->dev, "error: Could not get TBI device\n");
return;
}
......@@ -743,17 +708,17 @@ static void gfar_configure_serdes(struct net_device *dev)
* everything for us? Resetting it takes the link down and requires
* several seconds for it to come back.
*/
if (phy_read(priv->tbiphy, MII_BMSR) & BMSR_LSTATUS)
if (phy_read(tbiphy, MII_BMSR) & BMSR_LSTATUS)
return;
/* Single clk mode, mii mode off(for serdes communication) */
phy_write(priv->tbiphy, MII_TBICON, TBICON_CLK_SELECT);
phy_write(tbiphy, MII_TBICON, TBICON_CLK_SELECT);
phy_write(priv->tbiphy, MII_ADVERTISE,
phy_write(tbiphy, MII_ADVERTISE,
ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE |
ADVERTISE_1000XPSE_ASYM);
phy_write(priv->tbiphy, MII_BMCR, BMCR_ANENABLE |
phy_write(tbiphy, MII_BMCR, BMCR_ANENABLE |
BMCR_ANRESTART | BMCR_FULLDPLX | BMCR_SPEED1000);
}
......
......@@ -779,7 +779,8 @@ struct gfar_private {
spinlock_t bflock;
phy_interface_t interface;
char phy_bus_id[BUS_ID_SIZE];
struct device_node *phy_node;
struct device_node *tbi_node;
u32 device_flags;
unsigned char rx_csum_enable:1,
extended_hash:1,
......@@ -793,7 +794,6 @@ struct gfar_private {
/* PHY stuff */
struct phy_device *phydev;
struct phy_device *tbiphy;
struct mii_bus *mii_bus;
int oldspeed;
int oldduplex;
......
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