diff options
| author | Xuanqiang Luo <luoxuanqiang@kylinos.cn> | 2026-08-11 23:13:42 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-08-13 17:29:53 -0700 |
| commit | ebb16fca011ce08fa710cec42ee43a33bf331893 (patch) | |
| tree | 36d4d49698ec358a78ef5a140c43d782af593113 | |
| parent | 3da8c3c8b8fa99505624b65ef590482f48e766b6 (diff) | |
net: phy: add PHY package locking helpers
The PHY package API provides private data shared by all PHYs in a
package. Drivers are responsible for synchronizing access to this data,
but the API does not provide a lock for that purpose.
Add phy_package_lock() and phy_package_unlock() for drivers to serialize
access to package-private data, including its initialization.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Link: https://patch.msgid.link/20260811151345.73582-2-xuanqiang.luo@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/phy/phy_package.c | 23 | ||||
| -rw-r--r-- | drivers/net/phy/phylib.h | 2 |
2 files changed, 25 insertions, 0 deletions
diff --git a/drivers/net/phy/phy_package.c b/drivers/net/phy/phy_package.c index 16ae8d1c1f89..735806c5bea8 100644 --- a/drivers/net/phy/phy_package.c +++ b/drivers/net/phy/phy_package.c @@ -52,6 +52,29 @@ void *phy_package_get_priv(struct phy_device *phydev) } EXPORT_SYMBOL_GPL(phy_package_get_priv); +/** + * phy_package_lock - acquire the PHY package lock + * @phydev: PHY device that has joined the package + * + * Use this to serialize access to package-private data. Release the lock + * with phy_package_unlock(). + */ +void phy_package_lock(struct phy_device *phydev) +{ + mutex_lock(&phydev->mdio.bus->shared_lock); +} +EXPORT_SYMBOL_GPL(phy_package_lock); + +/** + * phy_package_unlock - release the PHY package lock + * @phydev: PHY device that has joined the package + */ +void phy_package_unlock(struct phy_device *phydev) +{ + mutex_unlock(&phydev->mdio.bus->shared_lock); +} +EXPORT_SYMBOL_GPL(phy_package_unlock); + static int phy_package_address(struct phy_device *phydev, unsigned int addr_offset) { diff --git a/drivers/net/phy/phylib.h b/drivers/net/phy/phylib.h index 0fba245f9745..c6e26ac6b28f 100644 --- a/drivers/net/phy/phylib.h +++ b/drivers/net/phy/phylib.h @@ -12,6 +12,8 @@ struct mii_bus; struct device_node *phy_package_get_node(struct phy_device *phydev); void *phy_package_get_priv(struct phy_device *phydev); +void phy_package_lock(struct phy_device *phydev); +void phy_package_unlock(struct phy_device *phydev); int __phy_package_read(struct phy_device *phydev, unsigned int addr_offset, u32 regnum); int __phy_package_write(struct phy_device *phydev, unsigned int addr_offset, |