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ramips: fix MDIO/PHY handling

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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 36271
v19.07.3_mercusys_ac12_duma
Gabor Juhos 11 years ago
parent 30e5bae84a
commit 78ee80f2e8
1 changed files with 222 additions and 0 deletions
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222
target/linux/ramips/patches-3.8/0132-NET-ramips-fix-mdio-bus-support.patch
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@ -0,0 +1,222 @@
--- a/drivers/net/ethernet/ramips/ramips_main.c
+++ b/drivers/net/ethernet/ramips/ramips_main.c
@@ -28,6 +28,7 @@
#include <linux/of_device.h>
#include <linux/clk.h>
#include <linux/of_net.h>
+#include <linux/of_mdio.h>
#include "ramips_eth.h"
@@ -406,12 +407,25 @@ ramips_mdio_reset(struct mii_bus *bus)
static int
ramips_mdio_init(struct raeth_priv *re)
{
+ struct device_node *mii_np;
int err;
- int i;
+
+ mii_np = of_get_child_by_name(re->of_node, "mdio-bus");
+ if (!mii_np) {
+ dev_err(re->parent, "no %s child node found", "mdio-bus");
+ return -ENODEV;
+ }
+
+ if (!of_device_is_available(mii_np)) {
+ err = 0;
+ goto err_put_node;
+ }
re->mii_bus = mdiobus_alloc();
- if (re->mii_bus == NULL)
- return -ENOMEM;
+ if (re->mii_bus == NULL) {
+ err = -ENOMEM;
+ goto err_put_node;
+ }
re->mii_bus->name = "ramips_mdio";
re->mii_bus->read = ramips_mdio_read;
@@ -422,12 +436,7 @@ ramips_mdio_init(struct raeth_priv *re)
re->mii_bus->parent = re->parent;
snprintf(re->mii_bus->id, MII_BUS_ID_SIZE, "%s", "ramips_mdio");
- re->mii_bus->phy_mask = 0;
-
- for (i = 0; i < PHY_MAX_ADDR; i++)
- re->mii_irq[i] = PHY_POLL;
-
- err = mdiobus_register(re->mii_bus);
+ err = of_mdiobus_register(re->mii_bus, mii_np);
if (err)
goto err_free_bus;
@@ -435,13 +444,20 @@ ramips_mdio_init(struct raeth_priv *re)
err_free_bus:
kfree(re->mii_bus);
+err_put_node:
+ of_node_put(mii_np);
+ re->mii_bus = NULL;
return err;
}
static void
ramips_mdio_cleanup(struct raeth_priv *re)
{
+ if (!re->mii_bus)
+ return;
+
mdiobus_unregister(re->mii_bus);
+ of_node_put(re->mii_bus->dev.of_node);
kfree(re->mii_bus);
}
@@ -474,106 +490,86 @@ ramips_phy_link_adjust(struct net_device
}
static int
-ramips_phy_connect_multi(struct raeth_priv *re)
+ramips_phy_connect_by_node(struct raeth_priv *re, struct device_node *phy_node)
{
- struct net_device *netdev = re->netdev;
- struct phy_device *phydev = NULL;
- int phy_addr;
- int ret = 0;
-
- for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
- if (!(re->phy_mask & (1 << phy_addr)))
- continue;
-
- if (re->mii_bus->phy_map[phy_addr] == NULL)
- continue;
+ struct phy_device *phydev;
+ int phy_mode;
- RADEBUG("%s: PHY found at %s, uid=%08x\n",
- netdev->name,
- dev_name(&re->mii_bus->phy_map[phy_addr]->dev),
- re->mii_bus->phy_map[phy_addr]->phy_id);
-
- if (phydev == NULL)
- phydev = re->mii_bus->phy_map[phy_addr];
- }
-
- if (!phydev) {
- netdev_err(netdev, "no PHY found with phy_mask=%08x\n",
- re->phy_mask);
- return -ENODEV;
+ phy_mode = of_get_phy_mode(re->of_node);
+ if (phy_mode < 0) {
+ dev_err(re->parent, "incorrect phy-mode\n");
+ return -EINVAL;
}
- re->phy_dev = phy_connect(netdev, dev_name(&phydev->dev),
- ramips_phy_link_adjust, 0, re->phy_if_mode);
-
- if (IS_ERR(re->phy_dev)) {
- netdev_err(netdev, "could not connect to PHY at %s\n",
- dev_name(&phydev->dev));
+ phydev = of_phy_connect(re->netdev, phy_node, ramips_phy_link_adjust,
+ 0, phy_mode);
+ if (IS_ERR(phydev)) {
+ dev_err(re->parent, "could not connect to PHY\n");
return PTR_ERR(re->phy_dev);
}
phydev->supported &= PHY_GBIT_FEATURES;
phydev->advertising = phydev->supported;
- RADEBUG("%s: connected to PHY at %s [uid=%08x, driver=%s]\n",
- netdev->name, dev_name(&phydev->dev),
- phydev->phy_id, phydev->drv->name);
+ dev_info(re->parent,
+ "connected to PHY at %s [uid=%08x, driver=%s]\n",
+ dev_name(&phydev->dev), phydev->phy_id,
+ phydev->drv->name);
+ re->phy_dev = phydev;
re->link = 0;
re->speed = 0;
re->duplex = -1;
re->rx_fc = 0;
re->tx_fc = 0;
- return ret;
+ return 0;
}
static int
-ramips_phy_connect_fixed(struct raeth_priv *re)
+ramips_phy_connect_fixed(struct raeth_priv *re, const __be32 *link, int size)
{
- if (!re->speed) {
- const __be32 *link;
- int size;
-
- link = of_get_property(re->of_node,
- "ralink,fixed-link", &size);
- if (!link || size != (4 * sizeof(*link)))
- return -ENOENT;
-
- re->speed = be32_to_cpup(link++);
- re->duplex = be32_to_cpup(link++);
- re->tx_fc = be32_to_cpup(link++);
- re->rx_fc = be32_to_cpup(link++);
+ if (size != (4 * sizeof(*link))) {
+ dev_err(re->parent, "invalid fixed-link property\n");
+ return -EINVAL;
}
+ re->speed = be32_to_cpup(link++);
+ re->duplex = be32_to_cpup(link++);
+ re->tx_fc = be32_to_cpup(link++);
+ re->rx_fc = be32_to_cpup(link++);
+
switch (re->speed) {
case SPEED_10:
case SPEED_100:
case SPEED_1000:
break;
default:
- netdev_err(re->netdev, "invalid speed specified\n");
+ dev_err(re->parent, "invalid link speed: %d\n", re->speed);
return -EINVAL;
}
- pr_info("%s: using fixed link parameters\n", re->netdev->name);
+ dev_info(re->parent, "using fixed link parameters\n");
return 0;
}
static int
ramips_phy_connect(struct raeth_priv *re)
{
- const __be32 *mask;
-
- mask = of_get_property(re->of_node, "ralink,phy-mask", NULL);
- re->phy_if_mode = of_get_phy_mode(re->of_node);
-
- if (!re->phy_if_mode || !mask)
- return ramips_phy_connect_fixed(re);
-
- re->phy_mask = be32_to_cpup(mask);
- return ramips_phy_connect_multi(re);
+ struct device_node *phy_node;
+ const __be32 *p32;
+ int size;
+
+ phy_node = of_parse_phandle(re->of_node, "phy-handle", 0);
+ if (phy_node)
+ return ramips_phy_connect_by_node(re, phy_node);
+
+ p32 = of_get_property(re->of_node, "ralink,fixed-link", &size);
+ if (p32)
+ return ramips_phy_connect_fixed(re, p32, size);
+ dev_err(re->parent, "unable to get connection type\n");
+ return -EINVAL;
}
static void
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