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net: phy: Add is_on_sfp_module flag and phy_on_sfp helper

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Add a flag and helper function to indicate that a PHY device is part of
an SFP module, which is set on attach. This can be used by PHY drivers
to handle SFP-specific quirks or behavior.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Robert Hancock 2021-02-16 16:54:53 -06:00 committed by David S. Miller
parent 3afd021899
commit b834489bce
2 changed files with 13 additions and 0 deletions
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2
drivers/net/phy/phy_device.c
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@ -1377,6 +1377,8 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
if (phydev->sfp_bus_attached)
dev->sfp_bus = phydev->sfp_bus;
else if (dev->sfp_bus)
phydev->is_on_sfp_module = true;
}
/* Some Ethernet drivers try to connect to a PHY device before

11
include/linux/phy.h
View file

@ -492,6 +492,7 @@ struct macsec_ops;
* @sysfs_links: Internal boolean tracking sysfs symbolic links setup/removal.
* @loopback_enabled: Set true if this PHY has been loopbacked successfully.
* @downshifted_rate: Set true if link speed has been downshifted.
* @is_on_sfp_module: Set true if PHY is located on an SFP module.
* @state: State of the PHY for management purposes
* @dev_flags: Device-specific flags used by the PHY driver.
* @irq: IRQ number of the PHY's interrupt (-1 if none)
@ -565,6 +566,7 @@ struct phy_device {
unsigned sysfs_links:1;
unsigned loopback_enabled:1;
unsigned downshifted_rate:1;
unsigned is_on_sfp_module:1;
unsigned autoneg:1;
/* The most recently read link state */
@ -1296,6 +1298,15 @@ static inline bool phy_is_internal(struct phy_device *phydev)
return phydev->is_internal;
}
/**
* phy_on_sfp - Convenience function for testing if a PHY is on an SFP module
* @phydev: the phy_device struct
*/
static inline bool phy_on_sfp(struct phy_device *phydev)
{
return phydev->is_on_sfp_module;
}
/**
* phy_interface_mode_is_rgmii - Convenience function for testing if a
* PHY interface mode is RGMII (all variants)