[PATCH 13/14] net: Rework fs_enet driver to use of_mdio infrastructure

Grant Likely
2009-03-31T08:27:55Z

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

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---

drivers/net/fs_enet/fs_enet-main.c | 69 ++++++------------------------------
drivers/net/fs_enet/mii-bitbang.c | 29 +--------------
drivers/net/fs_enet/mii-fec.c | 26 +-------------
include/linux/fs_enet_pd.h | 6 +--
4 files changed, 16 insertions(+), 114 deletions(-)

diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c
index b037ce9..387e0e9 100644
--- a/drivers/net/fs_enet/fs_enet-main.c
+++ b/drivers/net/fs_enet/fs_enet-main.c
@@ -36,6 +36,8 @@
#include <linux/fs.h>
#include <linux/platform_device.h>
#include <linux/phy.h>
+#include <linux/of.h>
+#include <linux/of_mdio.h>
#include <linux/of_platform.h>
#include <linux/of_gpio.h>

@@ -752,9 +754,10 @@ static int fs_init_phy(struct net_device *dev)
fep->oldlink = 0;
fep->oldspeed = 0;
fep->oldduplex = -1;
- if(fep->fpi->bus_id)
- phydev = phy_connect(dev, fep->fpi->bus_id, &fs_adjust_link, 0,
- PHY_INTERFACE_MODE_MII);
+ if(fep->fpi->phy_node)
+ phydev = of_phy_connect(dev, fep->fpi->phy_node,
+ &fs_adjust_link, 0,
+ PHY_INTERFACE_MODE_MII);
else {
printk("No phy bus ID specified in BSP code\n");
return -EINVAL;
@@ -962,57 +965,6 @@ static void cleanup_immap(void)

/**************************************************************************************/

-static int __devinit find_phy(struct device_node *np,
- struct fs_platform_info *fpi)
-{
- struct device_node *phynode, *mdionode;
- int ret = 0, len, bus_id;
- const u32 *data;
-
- data = of_get_property(np, "fixed-link", NULL);
- if (data) {
- snprintf(fpi->bus_id, 16, "%x:%02x", 0, *data);
- return 0;
- }
-
- data = of_get_property(np, "phy-handle", &len);
- if (!data || len != 4)
- return -EINVAL;
-
- phynode = of_find_node_by_phandle(*data);
- if (!phynode)
- return -EINVAL;
-
- data = of_get_property(phynode, "reg", &len);
- if (!data || len != 4) {
- ret = -EINVAL;
- goto out_put_phy;
- }
-
- mdionode = of_get_parent(phynode);
- if (!mdionode) {
- ret = -EINVAL;
- goto out_put_phy;
- }
-
- bus_id = of_get_gpio(mdionode, 0);
- if (bus_id < 0) {
- struct resource res;
- ret = of_address_to_resource(mdionode, 0, &res);
- if (ret)
- goto out_put_mdio;
- bus_id = res.start;
- }
-
- snprintf(fpi->bus_id, 16, "%x:%02x", bus_id, *data);
-
-out_put_mdio:
- of_node_put(mdionode);
-out_put_phy:
- of_node_put(phynode);
- return ret;
-}
-
#ifdef CONFIG_FS_ENET_HAS_FEC
#define IS_FEC(match) ((match)->data == &fs_fec_ops)
#else
@@ -1046,9 +998,9 @@ static int __devinit fs_enet_probe(struct of_device *ofdev,
fpi->rx_copybreak = 240;
fpi->use_napi = 1;
fpi->napi_weight = 17;
-
- ret = find_phy(ofdev->node, fpi);
- if (ret)
+ fpi->phy_node = of_parse_phandle(ofdev->node, "phy-handle", 0);
+ if ((!fpi->phy_node) && (!of_get_property(ofdev->node, "fixed-link",
+ NULL)))
goto out_free_fpi;

privsize = sizeof(*fep) +
@@ -1129,6 +1081,7 @@ out_cleanup_data:
out_free_dev:
free_netdev(ndev);
dev_set_drvdata(&ofdev->dev, NULL);
+ of_node_put(fpi->phy_node);
out_free_fpi:
kfree(fpi);
return ret;
@@ -1144,7 +1097,7 @@ static int fs_enet_remove(struct of_device *ofdev)
fep->ops->free_bd(ndev);
fep->ops->cleanup_data(ndev);
dev_set_drvdata(fep->dev, NULL);
-
+ of_node_put(fep->fpi->phy_node);
free_netdev(ndev);
return 0;
}
diff --git a/drivers/net/fs_enet/mii-bitbang.c b/drivers/net/fs_enet/mii-bitbang.c
index 49b6645..93b481b 100644
--- a/drivers/net/fs_enet/mii-bitbang.c
+++ b/drivers/net/fs_enet/mii-bitbang.c
@@ -22,6 +22,7 @@
#include <linux/mii.h>
#include <linux/platform_device.h>
#include <linux/mdio-bitbang.h>
+#include <linux/of_mdio.h>
#include <linux/of_platform.h>

#include "fs_enet.h"
@@ -149,31 +150,12 @@ static int __devinit fs_mii_bitbang_init(struct mii_bus *bus,
return 0;
}

-static void __devinit add_phy(struct mii_bus *bus, struct device_node *np)
-{
- const u32 *data;
- int len, id, irq;
-
- data = of_get_property(np, "reg", &len);
- if (!data || len != 4)
- return;
-
- id = *data;
- bus->phy_mask &= ~(1 << id);
-
- irq = of_irq_to_resource(np, 0, NULL);
- if (irq != NO_IRQ)
- bus->irq[id] = irq;
-}
-
static int __devinit fs_enet_mdio_probe(struct of_device *ofdev,
const struct of_device_id *match)
{
- struct device_node *np = NULL;
struct mii_bus *new_bus;
struct bb_info *bitbang;
int ret = -ENOMEM;
- int i;

bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL);
if (!bitbang)
@@ -196,17 +178,10 @@ static int __devinit fs_enet_mdio_probe(struct of_device *ofdev,
if (!new_bus->irq)
goto out_unmap_regs;

- for (i = 0; i < PHY_MAX_ADDR; i++)
- new_bus->irq[i] = -1;
-
- while ((np = of_get_next_child(ofdev->node, np)))
- if (!strcmp(np->type, "ethernet-phy"))
- add_phy(new_bus, np);
-
new_bus->parent = &ofdev->dev;
dev_set_drvdata(&ofdev->dev, new_bus);

- ret = mdiobus_register(new_bus);
+ ret = of_mdiobus_register(new_bus, ofdev->node);
if (ret)
goto out_free_irqs;

diff --git a/drivers/net/fs_enet/mii-fec.c b/drivers/net/fs_enet/mii-fec.c
index 28077cc..bdc3160 100644
--- a/drivers/net/fs_enet/mii-fec.c
+++ b/drivers/net/fs_enet/mii-fec.c
@@ -102,23 +102,6 @@ static int fs_enet_fec_mii_reset(struct mii_bus *bus)
return 0;
}

-static void __devinit add_phy(struct mii_bus *bus, struct device_node *np)
-{
- const u32 *data;
- int len, id, irq;
-
- data = of_get_property(np, "reg", &len);
- if (!data || len != 4)
- return;
-
- id = *data;
- bus->phy_mask &= ~(1 << id);
-
- irq = of_irq_to_resource(np, 0, NULL);
- if (irq != NO_IRQ)
- bus->irq[id] = irq;
-}
-
static int __devinit fs_enet_mdio_probe(struct of_device *ofdev,
const struct of_device_id *match)
{
@@ -165,17 +148,10 @@ static int __devinit fs_enet_mdio_probe(struct of_device *ofdev,
if (!new_bus->irq)
goto out_unmap_regs;

- for (i = 0; i < PHY_MAX_ADDR; i++)
- new_bus->irq[i] = -1;
-
- while ((np = of_get_next_child(ofdev->node, np)))
- if (!strcmp(np->type, "ethernet-phy"))
- add_phy(new_bus, np);
-
new_bus->parent = &ofdev->dev;
dev_set_drvdata(&ofdev->dev, new_bus);

- ret = mdiobus_register(new_bus);
+ ret = of_mdiobus_register(new_bus, ofdev->node);
if (ret)
goto out_free_irqs;

diff --git a/include/linux/fs_enet_pd.h b/include/linux/fs_enet_pd.h
index 8300cab..51b7934 100644
--- a/include/linux/fs_enet_pd.h
+++ b/include/linux/fs_enet_pd.h
@@ -17,6 +17,7 @@
#define FS_ENET_PD_H

#include <linux/string.h>
+#include <linux/of_mdio.h>
#include <asm/types.h>

#define FS_ENET_NAME "fs_enet"
@@ -130,10 +131,7 @@ struct fs_platform_info {

u32 device_flags;

- int phy_addr; /* the phy address (-1 no phy) */
- char bus_id[16];
- int phy_irq; /* the phy irq (if it exists) */
-
+ struct device_node *phy_node;
const struct fs_mii_bus_info *bus_info;

int rx_ring, tx_ring; /* number of buffers on rx */