[net-next PATCH v2 13/14] net: phy: Introduce fwnode_mdio_find_device()
From: Calvin Johnson <hidden>
Date: 2020-12-15 16:50:09
Also in:
linux-acpi, linux-arm-kernel, lkml
Subsystem:
ethernet phy library, networking drivers, the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Define fwnode_mdio_find_device() to get a pointer to the mdio_device from fwnode passed to the function. Signed-off-by: Calvin Johnson <redacted> --- Changes in v2: None drivers/net/mdio/of_mdio.c | 11 +---------- drivers/net/phy/phy_device.c | 23 +++++++++++++++++++++++ include/linux/phy.h | 6 ++++++ 3 files changed, 30 insertions(+), 10 deletions(-)
diff --git a/drivers/net/mdio/of_mdio.c b/drivers/net/mdio/of_mdio.c
index fa914d285271..1b561849269e 100644
--- a/drivers/net/mdio/of_mdio.c
+++ b/drivers/net/mdio/of_mdio.c@@ -300,16 +300,7 @@ EXPORT_SYMBOL(of_mdiobus_register); */ struct mdio_device *of_mdio_find_device(struct device_node *np) { - struct device *d; - - if (!np) - return NULL; - - d = bus_find_device_by_of_node(&mdio_bus_type, np); - if (!d) - return NULL; - - return to_mdio_device(d); + return fwnode_mdio_find_device(of_fwnode_handle(np)); } EXPORT_SYMBOL(of_mdio_find_device);
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 6fad89c02c5a..17d20e6d5416 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c@@ -2851,6 +2851,29 @@ static bool phy_drv_supports_irq(struct phy_driver *phydrv) return phydrv->config_intr && phydrv->handle_interrupt; } +/** + * fwnode_mdio_find_device - Given a fwnode, find the mdio_device + * @np: pointer to the mdio_device's fwnode + * + * If successful, returns a pointer to the mdio_device with the embedded + * struct device refcount incremented by one, or NULL on failure. + * The caller should call put_device() on the mdio_device after its use + */ +struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode) +{ + struct device *d; + + if (!fwnode) + return NULL; + + d = bus_find_device_by_fwnode(&mdio_bus_type, fwnode); + if (!d) + return NULL; + + return to_mdio_device(d); +} +EXPORT_SYMBOL(fwnode_mdio_find_device); + /** * fwnode_phy_find_device - Find phy_device on the mdiobus for the provided * phy_fwnode.
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 67ea4ca6f76f..5a0c290ff0f4 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h@@ -1343,6 +1343,7 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id, struct phy_c45_device_ids *c45_ids); #if IS_ENABLED(CONFIG_PHYLIB) int fwnode_get_phy_id(struct fwnode_handle *fwnode, u32 *phy_id); +struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode); struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode); struct phy_device *device_phy_find_device(struct device *dev); struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode);
@@ -1355,6 +1356,11 @@ static inline int fwnode_get_phy_id(struct fwnode_handle *fwnode, u32 *phy_id) return 0; } static inline +struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode) +{ + return 0; +} +static inline struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode) { return NULL;
--
2.17.1