net: phy: micrel: Restore led_mode and clk_sel on resume

These bits seem to be lost after a suspend/resume cycle so just set them
again. Do this by splitting the handling of these bits into a function
that is also called on resume.

This patch fixes ethernet suspend/resume on imx6ul-14x14-evk boards.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 28 insertions, 14 deletions

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 6a5fd18f062c..b9252b8d81ff 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -268,23 +268,12 @@ out:
         return ret;
 }
 
-static int kszphy_config_init(struct phy_device *phydev)
+/* Some config bits need to be set again on resume, handle them here. */
+static int kszphy_config_reset(struct phy_device *phydev)
 {
         struct kszphy_priv *priv = phydev->priv;
-        const struct kszphy_type *type;
         int ret;
 
-        if (!priv)
-                return 0;
-
-        type = priv->type;
-
-        if (type->has_broadcast_disable)
-                kszphy_broadcast_disable(phydev);
-
-        if (type->has_nand_tree_disable)
-                kszphy_nand_tree_disable(phydev);
-
         if (priv->rmii_ref_clk_sel) {
                 ret = kszphy_rmii_clk_sel(phydev, priv->rmii_ref_clk_sel_val);
                 if (ret) {
@@ -295,11 +284,30 @@ static int kszphy_config_init(struct phy_device *phydev)
         }
 
         if (priv->led_mode >= 0)
-                kszphy_setup_led(phydev, type->led_mode_reg, priv->led_mode);
+                kszphy_setup_led(phydev, priv->type->led_mode_reg, priv->led_mode);
 
         return 0;
 }
 
+static int kszphy_config_init(struct phy_device *phydev)
+{
+        struct kszphy_priv *priv = phydev->priv;
+        const struct kszphy_type *type;
+
+        if (!priv)
+                return 0;
+
+        type = priv->type;
+
+        if (type->has_broadcast_disable)
+                kszphy_broadcast_disable(phydev);
+
+        if (type->has_nand_tree_disable)
+                kszphy_nand_tree_disable(phydev);
+
+        return kszphy_config_reset(phydev);
+}
+
 static int ksz8041_config_init(struct phy_device *phydev)
 {
         struct device_node *of_node = phydev->mdio.dev.of_node;
@@ -700,8 +708,14 @@ static int kszphy_suspend(struct phy_device *phydev)
 
 static int kszphy_resume(struct phy_device *phydev)
 {
+        int ret;
+
         genphy_resume(phydev);
 
+        ret = kszphy_config_reset(phydev);
+        if (ret)
+                return ret;
+
         /* Enable PHY Interrupts */
         if (phy_interrupt_is_valid(phydev)) {
                 phydev->interrupts = PHY_INTERRUPT_ENABLED;