diff options
| author | Oleksij Rempel <o.rempel@pengutronix.de> | 2022-10-03 09:51:59 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-10-04 03:33:57 +0300 |
| commit | 5e82147de1cbd758bb280908daa39d95ed467538 (patch) | |
| tree | ef736552209fe3f6d34b180cde829cb921161f63 /drivers | |
| parent | cfaa202a73eafaf91a3d0a86b5e5df006562f5c0 (diff) | |
| download | linux-5e82147de1cbd758bb280908daa39d95ed467538.tar.xz | |
net: mdiobus: search for PSE nodes by parsing PHY nodes.
Some PHYs can be linked with PSE (Power Sourcing Equipment), so search
for related nodes and attach it to the phydev.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/mdio/fwnode_mdio.c | 37 | ||||
| -rw-r--r-- | drivers/net/phy/phy_device.c | 2 |
2 files changed, 37 insertions, 2 deletions
diff --git a/drivers/net/mdio/fwnode_mdio.c b/drivers/net/mdio/fwnode_mdio.c index 7ff7349a27a2..689e728345ce 100644 --- a/drivers/net/mdio/fwnode_mdio.c +++ b/drivers/net/mdio/fwnode_mdio.c @@ -10,10 +10,31 @@ #include <linux/fwnode_mdio.h> #include <linux/of.h> #include <linux/phy.h> +#include <linux/pse-pd/pse.h> MODULE_AUTHOR("Calvin Johnson <calvin.johnson@oss.nxp.com>"); MODULE_LICENSE("GPL"); +static struct pse_control * +fwnode_find_pse_control(struct fwnode_handle *fwnode) +{ + struct pse_control *psec; + struct device_node *np; + + if (!IS_ENABLED(CONFIG_PSE_CONTROLLER)) + return NULL; + + np = to_of_node(fwnode); + if (!np) + return NULL; + + psec = of_pse_control_get(np); + if (PTR_ERR(psec) == -ENOENT) + return NULL; + + return psec; +} + static struct mii_timestamper * fwnode_find_mii_timestamper(struct fwnode_handle *fwnode) { @@ -91,14 +112,21 @@ int fwnode_mdiobus_register_phy(struct mii_bus *bus, struct fwnode_handle *child, u32 addr) { struct mii_timestamper *mii_ts = NULL; + struct pse_control *psec = NULL; struct phy_device *phy; bool is_c45 = false; u32 phy_id; int rc; + psec = fwnode_find_pse_control(child); + if (IS_ERR(psec)) + return PTR_ERR(psec); + mii_ts = fwnode_find_mii_timestamper(child); - if (IS_ERR(mii_ts)) - return PTR_ERR(mii_ts); + if (IS_ERR(mii_ts)) { + rc = PTR_ERR(mii_ts); + goto clean_pse; + } rc = fwnode_property_match_string(child, "compatible", "ethernet-phy-ieee802.3-c45"); @@ -134,18 +162,23 @@ int fwnode_mdiobus_register_phy(struct mii_bus *bus, goto clean_phy; } + phy->psec = psec; + /* phy->mii_ts may already be defined by the PHY driver. A * mii_timestamper probed via the device tree will still have * precedence. */ if (mii_ts) phy->mii_ts = mii_ts; + return 0; clean_phy: phy_device_free(phy); clean_mii_ts: unregister_mii_timestamper(mii_ts); +clean_pse: + pse_control_put(psec); return rc; } diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index a4f5f151014a..57849ac0384e 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -26,6 +26,7 @@ #include <linux/netdevice.h> #include <linux/phy.h> #include <linux/phy_led_triggers.h> +#include <linux/pse-pd/pse.h> #include <linux/property.h> #include <linux/sfp.h> #include <linux/skbuff.h> @@ -991,6 +992,7 @@ EXPORT_SYMBOL(phy_device_register); void phy_device_remove(struct phy_device *phydev) { unregister_mii_timestamper(phydev->mii_ts); + pse_control_put(phydev->psec); device_del(&phydev->mdio.dev); |