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Subject[PATCH 1/2] [POWERPC] Add support of platforms without PHY to gianfar driver
Date

Gianfar driver is now able to work without real phy subnode,
that is necessary to cope with fixed-link situation, when
SoC is connected to the Ethernet inteface or embedded switch
without any PHY. In this case, fixed-speed property will
describe such a situation for gianfar driver.

The property is in form <duplexity speed>

Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>

---
arch/powerpc/sysdev/fsl_soc.c | 39 +++++++++++++++++++++++----------------
drivers/net/gianfar.c | 17 ++++++++++++++---
2 files changed, 37 insertions(+), 19 deletions(-)
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index cad1757..6864534 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -255,29 +255,36 @@ static int __init gfar_of_init(void)
FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;

ph = of_get_property(np, "phy-handle", NULL);
- phy = of_find_node_by_phandle(*ph);
+ if (ph == NULL) {
+ unsigned int *bus_id;

- if (phy == NULL) {
- ret = -ENODEV;
- goto unreg;
- }
+ bus_id = of_get_property(np, "fixed_speed",NULL);
+ gfar_data.bus_id = (bus_id[0]<<16) | bus_id[1];
+ } else {
+ phy = of_find_node_by_phandle(*ph);

- mdio = of_get_parent(phy);
+ if (phy == NULL) {
+ ret = -ENODEV;
+ goto unreg;
+ }
+
+ mdio = of_get_parent(phy);
+
+ id = of_get_property(phy, "reg", NULL);
+ ret = of_address_to_resource(mdio, 0, &res);
+ if (ret) {
+ of_node_put(phy);
+ of_node_put(mdio);
+ goto unreg;
+ }
+
+ gfar_data.phy_id = *id;
+ gfar_data.bus_id = res.start;

- id = of_get_property(phy, "reg", NULL);
- ret = of_address_to_resource(mdio, 0, &res);
- if (ret) {
of_node_put(phy);
of_node_put(mdio);
- goto unreg;
}

- gfar_data.phy_id = *id;
- gfar_data.bus_id = res.start;
-
- of_node_put(phy);
- of_node_put(mdio);
-
ret =
platform_device_add_data(gfar_dev, &gfar_data,
sizeof(struct
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 1b854bf..cf08ced 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -93,6 +93,7 @@
#include <linux/crc32.h>
#include <linux/mii.h>
#include <linux/phy.h>
+#include <linux/phy_fixed.h>

#include "gianfar.h"
#include "gianfar_mii.h"
@@ -445,11 +446,21 @@ static int init_phy(struct net_device *dev)
priv->oldspeed = 0;
priv->oldduplex = -1;

- snprintf(phy_id, BUS_ID_SIZE, PHY_ID_FMT, priv->einfo->bus_id, priv->einfo->phy_id);
-
interface = gfar_get_interface(dev);

- phydev = phy_connect(dev, phy_id, &adjust_link, 0, interface);
+ if (priv->einfo->phy_id) {
+ snprintf(phy_id, BUS_ID_SIZE, PHY_ID_FMT, priv->einfo->bus_id, priv->einfo->phy_id);
+ phydev = phy_connect(dev, phy_id, &adjust_link, 0, interface);
+ } else {
+ struct fixed_info *phyinfo;
+ int phy_addr = (priv->einfo->bus_id >> 16);
+
+ phyinfo = fixed_mdio_get_phydev(phy_addr-1);
+ phydev = phyinfo->phydev;
+ snprintf(phydev->dev.bus_id, BUS_ID_SIZE, PHY_ID_FMT,
+ (priv->einfo->bus_id & 0xffff) , phy_addr);
+ memset(phyinfo->regs,0xff,sizeof(phyinfo->regs[0])*phyinfo->regs_num);
+ }

if (IS_ERR(phydev)) {
printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
-
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