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Message-ID: <20090319050043.11320.96160.stgit@localhost.localdomain>
Date: Wed, 18 Mar 2009 23:00:44 -0600
From: Grant Likely <grant.likely@...retlab.ca>
To: linuxppc-dev@...abs.org, netdev@...r.kernel.org,
afleming@...escale.com, avorontsov@...mvista.com,
davem@...emloft.net, galak@...nel.crashing.org
Subject: [PATCH 6/9] net/gianfar: Rework gianfar driver to use OF PHY/MDIO
helper functions
From: Grant Likely <grant.likely@...retlab.ca>
This patch simplifies the driver by making use of more common code.
Signed-off-by: Grant Likely <grant.likely@...retlab.ca>
---
drivers/net/gianfar.c | 94 ++++++++++++++-------------------------------
drivers/net/gianfar.h | 3 +
drivers/net/gianfar_mii.c | 52 +------------------------
3 files changed, 34 insertions(+), 115 deletions(-)
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 9831b3f..0521267 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -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>
@@ -155,17 +156,13 @@ 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];
if (!np || !of_device_is_available(np))
return -ENODEV;
@@ -228,8 +225,8 @@ 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-device", 0);
+ if (!priv->phy_node) {
u32 *fixed_link;
fixed_link = (u32 *)of_get_property(np, "fixed-link", NULL);
@@ -237,57 +234,10 @@ 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);
- of_node_put(mdio);
-
- gfar_mdio_bus_name(bus_name, 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;
@@ -661,7 +611,6 @@ 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;
@@ -670,23 +619,38 @@ 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 (priv->tbi_node) {
+ priv->tbiphy = of_phy_connect(dev, priv->tbi_node, &adjust_link,
+ 0, interface);
+ if (!priv->tbiphy) {
+ dev_err(&dev->dev, "error: Could not attach to TBI\n");
+ goto err_tbiphy;
+ }
+ }
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;
+
+ err_tbiphy:
+ if (priv->phy_node)
+ phy_disconnect(priv->phydev);
+ priv->phydev = NULL;
+ return -ENODEV;
}
/*
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index eaa8689..d3d56a9 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -775,7 +775,8 @@ 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,
diff --git a/drivers/net/gianfar_mii.c b/drivers/net/gianfar_mii.c
index f49a426..c6d77bd 100644
--- a/drivers/net/gianfar_mii.c
+++ b/drivers/net/gianfar_mii.c
@@ -35,6 +35,7 @@
#include <linux/mii.h>
#include <linux/phy.h>
#include <linux/of.h>
+#include <linux/of_mdio.h>
#include <linux/of_platform.h>
#include <asm/io.h>
@@ -152,45 +153,6 @@ static int gfar_mdio_reset(struct mii_bus *bus)
return 0;
}
-/* Allocate an array which provides irq #s for each PHY on the given bus */
-static int *create_irq_map(struct device_node *np)
-{
- int *irqs;
- int i;
- struct device_node *child = NULL;
-
- irqs = kcalloc(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL);
-
- if (!irqs)
- return NULL;
-
- for (i = 0; i < PHY_MAX_ADDR; i++)
- irqs[i] = PHY_POLL;
-
- while ((child = of_get_next_child(np, child)) != NULL) {
- int irq = irq_of_parse_and_map(child, 0);
- const u32 *id;
-
- if (irq == NO_IRQ)
- continue;
-
- id = of_get_property(child, "reg", NULL);
-
- if (!id)
- continue;
-
- if (*id < PHY_MAX_ADDR && *id >= 0)
- irqs[*id] = irq;
- else
- printk(KERN_WARNING "%s: "
- "%d is not a valid PHY address\n",
- np->full_name, *id);
- }
-
- return irqs;
-}
-
-
void gfar_mdio_bus_name(char *name, struct device_node *np)
{
const u32 *reg;
@@ -253,7 +215,7 @@ static int gfar_mdio_probe(struct of_device *ofdev,
new_bus->priv = (void __force *)regs;
- new_bus->irq = create_irq_map(np);
+ new_bus->irq = kcalloc(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL);
if (new_bus->irq == NULL) {
err = -ENOMEM;
@@ -301,15 +263,7 @@ static int gfar_mdio_probe(struct of_device *ofdev,
gfar_write(&enet_regs->tbipa, tbiaddr);
- /*
- * The TBIPHY-only buses will find PHYs at every address,
- * so we mask them all but the TBI
- */
- if (!of_device_is_compatible(np, "fsl,gianfar-mdio"))
- new_bus->phy_mask = ~(1 << tbiaddr);
-
- err = mdiobus_register(new_bus);
-
+ err = of_mdiobus_register(new_bus, np);
if (err != 0) {
printk (KERN_ERR "%s: Cannot register as MDIO bus\n",
new_bus->name);
--
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