linux-kernel - [PATCH net-next v3 07/15] net: phy: c45: migrate to genphy_c45_write_eee

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Message-Id: <20230130080714.139492-8-o.rempel@pengutronix.de>
Date:   Mon, 30 Jan 2023 09:07:06 +0100
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Woojung Huh <woojung.huh@...rochip.com>,
        UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        Arun.Ramadoss@...rochip.com
Subject: [PATCH net-next v3 07/15] net: phy: c45: migrate to genphy_c45_write_eee_adv()

Migrate from genphy_config_eee_advert() to genphy_c45_write_eee_adv().

It should work as before except write operation to the EEE adv registers
will be done only if some EEE abilities was detected.

If some driver will have a regression, related driver should provide own
.get_features callback. See micrel.c:ksz9477_get_features() as example.

Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
---
 drivers/net/phy/phy-c45.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c
index d89627ee0ec8..3a990e0a8d51 100644
--- a/drivers/net/phy/phy-c45.c
+++ b/drivers/net/phy/phy-c45.c
@@ -262,7 +262,11 @@ int genphy_c45_an_config_aneg(struct phy_device *phydev)
 	linkmode_and(phydev->advertising, phydev->advertising,
 		     phydev->supported);
 
-	changed = genphy_config_eee_advert(phydev);
+	ret = genphy_c45_write_eee_adv(phydev, phydev->supported_eee);
+	if (ret < 0)
+		return ret;
+	else if (ret)
+		changed = true;
 
 	if (genphy_c45_baset1_able(phydev))
 		return genphy_c45_baset1_an_config_aneg(phydev);
@@ -945,6 +949,11 @@ int genphy_c45_pma_read_abilities(struct phy_device *phydev)
 		}
 	}
 
+	/* This is optional functionality. If not supported, we may get an error
+	 * which should be ignored.
+	 */
+	genphy_c45_read_eee_abilities(phydev);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(genphy_c45_pma_read_abilities);
-- 
2.30.2