netdev - [net-next PATCH v3 06/11] net: phy: Export some functions

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Message-Id: <20250415193323.2794214-7-sean.anderson@linux.dev>
Date: Tue, 15 Apr 2025 15:33:18 -0400
From: Sean Anderson <sean.anderson@...ux.dev>
To: netdev@...r.kernel.org,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Russell King <linux@...linux.org.uk>
Cc: upstream@...oha.com,
	Christian Marangi <ansuelsmth@...il.com>,
	linux-kernel@...r.kernel.org,
	Kory Maincent <kory.maincent@...tlin.com>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Sean Anderson <sean.anderson@...ux.dev>
Subject: [net-next PATCH v3 06/11] net: phy: Export some functions

Export a few functions so they can be used outside the phy subsystem:

get_phy_c22_id is useful when probing MDIO devices which present a
phy-like interface despite not using the Linux ethernet phy subsystem.

mdio_device_bus_match is useful when creating MDIO devices manually
(e.g. on non-devicetree platforms).

At the moment the only (future) user of these functions selects PHYLIB,
so we do not need fallbacks for when CONFIG_PHYLIB=n.

Signed-off-by: Sean Anderson <sean.anderson@...ux.dev>
---

(no changes since v1)

 drivers/net/phy/mdio_device.c | 1 +
 drivers/net/phy/phy_device.c  | 3 ++-
 include/linux/phy.h           | 1 +
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/mdio_device.c b/drivers/net/phy/mdio_device.c
index e747ee63c665..cce3f405d1a4 100644
--- a/drivers/net/phy/mdio_device.c
+++ b/drivers/net/phy/mdio_device.c
@@ -45,6 +45,7 @@ int mdio_device_bus_match(struct device *dev, const struct device_driver *drv)
 
 	return strcmp(mdiodev->modalias, drv->name) == 0;
 }
+EXPORT_SYMBOL_GPL(mdio_device_bus_match);
 
 struct mdio_device *mdio_device_create(struct mii_bus *bus, int addr)
 {
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index cc6c209fe702..7548a274bcdb 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -899,7 +899,7 @@ static int get_phy_c45_ids(struct mii_bus *bus, int addr,
  * valid, %-EIO on bus access error, or %-ENODEV if no device responds
  * or invalid ID.
  */
-static int get_phy_c22_id(struct mii_bus *bus, int addr, u32 *phy_id)
+int get_phy_c22_id(struct mii_bus *bus, int addr, u32 *phy_id)
 {
 	int phy_reg;
 
@@ -927,6 +927,7 @@ static int get_phy_c22_id(struct mii_bus *bus, int addr, u32 *phy_id)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(get_phy_c22_id);
 
 /* Extract the phy ID from the compatible string of the form
  * ethernet-phy-idAAAA.BBBB.
diff --git a/include/linux/phy.h b/include/linux/phy.h
index fb755358d965..512ed1be4ec1 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1754,6 +1754,7 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id,
 				     bool is_c45,
 				     struct phy_c45_device_ids *c45_ids);
 #if IS_ENABLED(CONFIG_PHYLIB)
+int get_phy_c22_id(struct mii_bus *bus, int addr, u32 *phy_id);
 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);
-- 
2.35.1.1320.gc452695387.dirty