fs_enet: MDIO on GPIO support
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>
diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c
index a5baaf5..fb7c477 100644
--- a/drivers/net/fs_enet/fs_enet-main.c
+++ b/drivers/net/fs_enet/fs_enet-main.c
@@ -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 @@
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 @@
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);