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fs_enet: MDIO on GPIO support

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Port the fs_enet driver to support the MDIO on GPIO driver for PHY access
in addition to the mii-bitbang driver.

Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Laurent Pinchart 2008-05-26 11:53:45 +02:00 committed by Jeff Garzik
parent a5edeccb1a
commit d8b35fac8c
1 changed files with 22 additions and 13 deletions
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35
drivers/net/fs_enet/fs_enet-main.c
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@ -43,6 +43,7 @@
#include <asm/uaccess.h>
#ifdef CONFIG_PPC_CPM_NEW_BINDING
#include <linux/of_gpio.h>
#include <asm/of_platform.h>
#endif
@ -1172,8 +1173,7 @@ static int __devinit find_phy(struct device_node *np,
struct fs_platform_info *fpi)
{
struct device_node *phynode, *mdionode;
struct resource res;
int ret = 0, len;
int ret = 0, len, bus_id;
const u32 *data;
data = of_get_property(np, "fixed-link", NULL);
@ -1190,19 +1190,28 @@ static int __devinit find_phy(struct device_node *np,
if (!phynode)
return -EINVAL;
mdionode = of_get_parent(phynode);
if (!mdionode)
goto out_put_phy;
ret = of_address_to_resource(mdionode, 0, &res);
if (ret)
goto out_put_mdio;
data = of_get_property(phynode, "reg", &len);
if (!data || len != 4)
goto out_put_mdio;
if (!data || len != 4) {
ret = -EINVAL;
goto out_put_phy;
}
snprintf(fpi->bus_id, 16, "%x:%02x", res.start, *data);
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);