linux-kernel - [PATCH net-next v2 3/8] net: phy: Add mac_supports_eee variable for EEE support and LPI handling

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Date:   Mon, 27 Mar 2023 16:21:57 +0200
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Wei Fang <wei.fang@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        Shenwei Wang <shenwei.wang@....com>,
        Clark Wang <xiaoning.wang@....com>,
        NXP Linux Team <linux-imx@....com>,
        Amit Cohen <amcohen@...dia.com>, Gal Pressman <gal@...dia.com>,
        Alexandru Tachici <alexandru.tachici@...log.com>,
        Piergiorgio Beruto <piergiorgio.beruto@...il.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: [PATCH net-next v2 3/8] net: phy: Add mac_supports_eee variable for EEE support and LPI handling

This commit introduces a new variable, mac_supports_eee, to the PHY
layer. This variable is used to indicate if a MAC provides EEE support
or is responsible for Low Power Idle (LPI) handling. The
mac_supports_eee variable should be used in conjunction with
is_smart_eee_phy to make proper configuration decisions based on the
capabilities of both the PHY and MAC.

By adding the mac_supports_eee variable, PHY drivers and the PHYlib
framework can better coordinate EEE and LPI management between the PHY
and MAC.

Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
---
 include/linux/phy.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/phy.h b/include/linux/phy.h
index 6622b59ab5a1..573ad3fc2bf7 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -548,6 +548,7 @@ struct macsec_ops;
  * @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
  * @is_smart_eee_phy: Set true if PHY is a Smart EEE PHY
+ * @mac_supports_eee: Set true if MAC supports EEE
  * @state: State of the PHY for management purposes
  * @dev_flags: Device-specific flags used by the PHY driver.
  *
@@ -644,6 +645,7 @@ struct phy_device {
 	unsigned is_on_sfp_module:1;
 	unsigned mac_managed_pm:1;
 	unsigned is_smart_eee_phy:1;
+	unsigned mac_supports_eee:1;
 
 	unsigned autoneg:1;
 	/* The most recently read link state */
-- 
2.30.2