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net: phy: add iterator mdiobus_for_each_phy

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Add an iterator for all PHY's on a MII bus, and phy_find_next()
as a prerequisite.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/cd112f15-401a-43d9-8525-9ff0965a68cd@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Heiner Kallweit
2025-10-25 20:49:50 +02:00
committed by Jakub Kicinski
parent cf35f4347d
commit 26888de97b
2 changed files with 19 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/net/phy/phy_device.c
+9 -7
View File
@@ -1224,22 +1224,24 @@ int phy_get_c45_ids(struct phy_device *phydev)
EXPORT_SYMBOL(phy_get_c45_ids);
/**
* phy_find_first - finds the first PHY device on the bus
* phy_find_next - finds the next PHY device on the bus
* @bus: the target MII bus
* @pos: cursor
*
* Return: next phy_device on the bus, or NULL
*/
struct phy_device *phy_find_first(struct mii_bus *bus)
struct phy_device *phy_find_next(struct mii_bus *bus, struct phy_device *pos)
{
struct phy_device *phydev;
int addr;
for (int addr = pos ? pos->mdio.addr + 1 : 0;
addr < PHY_MAX_ADDR; addr++) {
struct phy_device *phydev = mdiobus_get_phy(bus, addr);
for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
phydev = mdiobus_get_phy(bus, addr);
if (phydev)
return phydev;
}
return NULL;
}
EXPORT_SYMBOL(phy_find_first);
EXPORT_SYMBOL_GPL(phy_find_next);
/**
* phy_prepare_link - prepares the PHY layer to monitor link status
include/linux/phy.h
+10 -1
View File
@@ -1869,7 +1869,7 @@ int phy_sfp_probe(struct phy_device *phydev,
const struct sfp_upstream_ops *ops);
struct phy_device *phy_attach(struct net_device *dev, const char *bus_id,
phy_interface_t interface);
struct phy_device *phy_find_first(struct mii_bus *bus);
struct phy_device *phy_find_next(struct mii_bus *bus, struct phy_device *pos);
int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
u32 flags, phy_interface_t interface);
int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
@@ -1896,6 +1896,15 @@ bool phy_check_valid(int speed, int duplex, unsigned long *features);
int phy_restart_aneg(struct phy_device *phydev);
int phy_reset_after_clk_enable(struct phy_device *phydev);
static inline struct phy_device *phy_find_first(struct mii_bus *bus)
{
return phy_find_next(bus, NULL);
}
#define mdiobus_for_each_phy(_bus, _phydev) \
for (_phydev = phy_find_first(_bus); _phydev; \
_phydev = phy_find_next(_bus, _phydev))
#if IS_ENABLED(CONFIG_PHYLIB)
int phy_start_cable_test(struct phy_device *phydev,
struct netlink_ext_ack *extack);