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Date: Thu, 15 Oct 2020 15:49:16 +0300
From: Ivan Mikhaylov <i.mikhaylov@...ro.com>
To: "David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Po-Yu Chuang <ratbert@...aday-tech.com>
CC: Ivan Mikhaylov <i.mikhaylov@...ro.com>,
Joel Stanley <joel@....id.au>, <netdev@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <openbmc@...ts.ozlabs.org>
Subject: [PATCH v1 1/2] net: ftgmac100: move phy connect out from ftgmac100_setup_mdio
Split MDIO registration and PHY connect into ftgmac100_setup_mdio and
ftgmac100_mii_probe.
Signed-off-by: Ivan Mikhaylov <i.mikhaylov@...ro.com>
---
drivers/net/ethernet/faraday/ftgmac100.c | 92 ++++++++++++------------
1 file changed, 47 insertions(+), 45 deletions(-)
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index 87236206366f..6997e121824b 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -1044,11 +1044,47 @@ static void ftgmac100_adjust_link(struct net_device *netdev)
schedule_work(&priv->reset_task);
}
-static int ftgmac100_mii_probe(struct ftgmac100 *priv, phy_interface_t intf)
+static int ftgmac100_mii_probe(struct net_device *netdev)
{
- struct net_device *netdev = priv->netdev;
+ struct ftgmac100 *priv = netdev_priv(netdev);
+ struct platform_device *pdev = to_platform_device(priv->dev);
+ struct device_node *np = pdev->dev.of_node;
+ phy_interface_t phy_intf = PHY_INTERFACE_MODE_RGMII;
struct phy_device *phydev;
+ /* Get PHY mode from device-tree */
+ if (np) {
+ /* Default to RGMII. It's a gigabit part after all */
+ phy_intf = of_get_phy_mode(np, &phy_intf);
+ if (phy_intf < 0)
+ phy_intf = PHY_INTERFACE_MODE_RGMII;
+
+ /* Aspeed only supports these. I don't know about other IP
+ * block vendors so I'm going to just let them through for
+ * now. Note that this is only a warning if for some obscure
+ * reason the DT really means to lie about it or it's a newer
+ * part we don't know about.
+ *
+ * On the Aspeed SoC there are additionally straps and SCU
+ * control bits that could tell us what the interface is
+ * (or allow us to configure it while the IP block is held
+ * in reset). For now I chose to keep this driver away from
+ * those SoC specific bits and assume the device-tree is
+ * right and the SCU has been configured properly by pinmux
+ * or the firmware.
+ */
+ if (priv->is_aspeed &&
+ phy_intf != PHY_INTERFACE_MODE_RMII &&
+ phy_intf != PHY_INTERFACE_MODE_RGMII &&
+ phy_intf != PHY_INTERFACE_MODE_RGMII_ID &&
+ phy_intf != PHY_INTERFACE_MODE_RGMII_RXID &&
+ phy_intf != PHY_INTERFACE_MODE_RGMII_TXID) {
+ netdev_warn(netdev,
+ "Unsupported PHY mode %s !\n",
+ phy_modes(phy_intf));
+ }
+ }
+
phydev = phy_find_first(priv->mii_bus);
if (!phydev) {
netdev_info(netdev, "%s: no PHY found\n", netdev->name);
@@ -1056,7 +1092,7 @@ static int ftgmac100_mii_probe(struct ftgmac100 *priv, phy_interface_t intf)
}
phydev = phy_connect(netdev, phydev_name(phydev),
- &ftgmac100_adjust_link, intf);
+ &ftgmac100_adjust_link, phy_intf);
if (IS_ERR(phydev)) {
netdev_err(netdev, "%s: Could not attach to PHY\n", netdev->name);
@@ -1601,7 +1637,6 @@ static int ftgmac100_setup_mdio(struct net_device *netdev)
{
struct ftgmac100 *priv = netdev_priv(netdev);
struct platform_device *pdev = to_platform_device(priv->dev);
- phy_interface_t phy_intf = PHY_INTERFACE_MODE_RGMII;
struct device_node *np = pdev->dev.of_node;
int i, err = 0;
u32 reg;
@@ -1623,39 +1658,6 @@ static int ftgmac100_setup_mdio(struct net_device *netdev)
iowrite32(reg, priv->base + FTGMAC100_OFFSET_REVR);
}
- /* Get PHY mode from device-tree */
- if (np) {
- /* Default to RGMII. It's a gigabit part after all */
- err = of_get_phy_mode(np, &phy_intf);
- if (err)
- phy_intf = PHY_INTERFACE_MODE_RGMII;
-
- /* Aspeed only supports these. I don't know about other IP
- * block vendors so I'm going to just let them through for
- * now. Note that this is only a warning if for some obscure
- * reason the DT really means to lie about it or it's a newer
- * part we don't know about.
- *
- * On the Aspeed SoC there are additionally straps and SCU
- * control bits that could tell us what the interface is
- * (or allow us to configure it while the IP block is held
- * in reset). For now I chose to keep this driver away from
- * those SoC specific bits and assume the device-tree is
- * right and the SCU has been configured properly by pinmux
- * or the firmware.
- */
- if (priv->is_aspeed &&
- phy_intf != PHY_INTERFACE_MODE_RMII &&
- phy_intf != PHY_INTERFACE_MODE_RGMII &&
- phy_intf != PHY_INTERFACE_MODE_RGMII_ID &&
- phy_intf != PHY_INTERFACE_MODE_RGMII_RXID &&
- phy_intf != PHY_INTERFACE_MODE_RGMII_TXID) {
- netdev_warn(netdev,
- "Unsupported PHY mode %s !\n",
- phy_modes(phy_intf));
- }
- }
-
priv->mii_bus->name = "ftgmac100_mdio";
snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s-%d",
pdev->name, pdev->id);
@@ -1673,16 +1675,8 @@ static int ftgmac100_setup_mdio(struct net_device *netdev)
goto err_register_mdiobus;
}
- err = ftgmac100_mii_probe(priv, phy_intf);
- if (err) {
- dev_err(priv->dev, "MII Probe failed!\n");
- goto err_mii_probe;
- }
-
return 0;
-err_mii_probe:
- mdiobus_unregister(priv->mii_bus);
err_register_mdiobus:
mdiobus_free(priv->mii_bus);
return err;
@@ -1860,6 +1854,14 @@ static int ftgmac100_probe(struct platform_device *pdev)
err = ftgmac100_setup_mdio(netdev);
if (err)
goto err_setup_mdio;
+
+ err = ftgmac100_mii_probe(netdev);
+ if (err) {
+ dev_err(priv->dev, "MII probe failed!\n");
+ mdiobus_unregister(priv->mii_bus);
+ goto err_setup_mdio;
+ }
+
}
if (priv->is_aspeed) {
--
2.21.1
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