linux-kernel - [PATCH] net: phy: lxt: Add suspend/resume support to LXT971 and LXT973.

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Message-Id: <cf280b7ab1f513f03d3908ac9ad194e819f170f5.1558519026.git.christophe.leroy@c-s.fr>
Date:   Wed, 22 May 2019 10:01:07 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH] net: phy: lxt: Add suspend/resume support to LXT971 and
 LXT973.

All LXT PHYs implement the standard "power down" bit 11 of
BMCR, so this patch adds support using the generic
genphy_{suspend,resume} functions.

LXT970 is left aside because all registers get cleared upon
"power down" exit.

Fixes: 0f0ca340e57b ("phy: power management support")
Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
 drivers/net/phy/lxt.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/phy/lxt.c b/drivers/net/phy/lxt.c
index 314486288119..356bd6472f49 100644
--- a/drivers/net/phy/lxt.c
+++ b/drivers/net/phy/lxt.c
@@ -262,6 +262,8 @@ static struct phy_driver lxt97x_driver[] = {
 	/* PHY_BASIC_FEATURES */
 	.ack_interrupt	= lxt971_ack_interrupt,
 	.config_intr	= lxt971_config_intr,
+	.suspend	= genphy_suspend,
+	.resume		= genphy_resume,
 }, {
 	.phy_id		= 0x00137a10,
 	.name		= "LXT973-A2",
@@ -271,6 +273,8 @@ static struct phy_driver lxt97x_driver[] = {
 	.probe		= lxt973_probe,
 	.config_aneg	= lxt973_config_aneg,
 	.read_status	= lxt973a2_read_status,
+	.suspend	= genphy_suspend,
+	.resume		= genphy_resume,
 }, {
 	.phy_id		= 0x00137a10,
 	.name		= "LXT973",
@@ -279,6 +283,8 @@ static struct phy_driver lxt97x_driver[] = {
 	.flags		= 0,
 	.probe		= lxt973_probe,
 	.config_aneg	= lxt973_config_aneg,
+	.suspend	= genphy_suspend,
+	.resume		= genphy_resume,
 } };
 
 module_phy_driver(lxt97x_driver);
-- 
2.13.3