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authorFlorian Fainelli <f.fainelli@gmail.com>2023-05-11 20:21:08 +0300
committerDavid S. Miller <davem@davemloft.net>2023-05-13 18:56:29 +0300
commita7e3448086d580abadccff399316c6eb5ecdedbf (patch)
tree77cd87eb14fa3dcf8a9c251226cc9dcf9fbab304 /include/linux/phy.h
parentba79e9a73284f576f336814125571432a2b3940f (diff)
downloadlinux-a7e3448086d580abadccff399316c6eb5ecdedbf.tar.xz
net: phy: Allow drivers to always call into ->suspend()
A few PHY drivers are currently attempting to not suspend the PHY when Wake-on-LAN is enabled, however that code is not currently executing at all due to an early check in phy_suspend(). This prevents PHY drivers from making an appropriate decisions and put the hardware into a low power state if desired. In order to allow the PHY drivers to opt into getting their ->suspend routine to be called, add a PHY_ALWAYS_CALL_SUSPEND bit which can be set. A boolean that tracks whether the PHY or the attached MAC has Wake-on-LAN enabled is also provided for convenience. If phydev::wol_enabled then the PHY shall not prevent its own Wake-on-LAN detection logic from working and shall not prevent the Ethernet MAC from receiving packets for matching. Reviewed-by: Simon Horman <simon.horman@corigine.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/phy.h')
-rw-r--r--include/linux/phy.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/phy.h b/include/linux/phy.h
index c5a0dc829714..e0df8b3c2bdb 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -86,6 +86,7 @@ extern const int phy_10gbit_features_array[1];
#define PHY_IS_INTERNAL 0x00000001
#define PHY_RST_AFTER_CLK_EN 0x00000002
#define PHY_POLL_CABLE_TEST 0x00000004
+#define PHY_ALWAYS_CALL_SUSPEND 0x00000008
#define MDIO_DEVICE_IS_PHY 0x80000000
/**
@@ -548,6 +549,8 @@ struct macsec_ops;
* @downshifted_rate: Set true if link speed has been downshifted.
* @is_on_sfp_module: Set true if PHY is located on an SFP module.
* @mac_managed_pm: Set true if MAC driver takes of suspending/resuming PHY
+ * @wol_enabled: Set to true if the PHY or the attached MAC have Wake-on-LAN
+ * enabled.
* @state: State of the PHY for management purposes
* @dev_flags: Device-specific flags used by the PHY driver.
*
@@ -644,6 +647,7 @@ struct phy_device {
unsigned downshifted_rate:1;
unsigned is_on_sfp_module:1;
unsigned mac_managed_pm:1;
+ unsigned wol_enabled:1;
unsigned autoneg:1;
/* The most recently read link state */