Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Oleksij Rempel <o.rempel@pengutronix.de>
To:     "David S. Miller" <davem@davemloft.net>,
        Andrew Lunn <andrew@lunn.ch>,
        Eric Dumazet <edumazet@google.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Vladimir Oltean <olteanv@gmail.com>,
        Woojung Huh <woojung.huh@microchip.com>,
        Arun Ramadoss <arun.ramadoss@microchip.com>,
        Conor Dooley <conor+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Rob Herring <robh+dt@kernel.org>
Cc:     Oleksij Rempel <o.rempel@pengutronix.de>, kernel@pengutronix.de,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        UNGLinuxDriver@microchip.com,
        "Russell King (Oracle)" <linux@armlinux.org.uk>,
        devicetree@vger.kernel.org
Subject: [PATCH net-next v1 4/6] net: dsa: microchip: ksz9477: add Wake on PHY event support
Date:   Thu, 20 Jul 2023 15:25:54 +0200
Message-Id: <20230720132556.57562-5-o.rempel@pengutronix.de>
In-Reply-To: <20230720132556.57562-1-o.rempel@pengutronix.de>
References: <20230720132556.57562-1-o.rempel@pengutronix.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

KSZ9477 family of switches supports multiple PHY events:
- wake on Link Up
- wake on Energy Detect.
Since current UAPI can't differentiate between this PHY events, map all of them
to WAKE_PHY.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
 drivers/net/dsa/microchip/ksz9477.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
index 56c8fb9f0379a..9a531db79f832 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -88,7 +88,7 @@ void ksz9477_get_wol(struct ksz_device *dev, int port,
 	if (!(pme_conf & PME_ENABLE))
 		return;
 
-	wol->supported = WAKE_MAGIC;
+	wol->supported = WAKE_PHY | WAKE_MAGIC;
 
 	ret = ksz_pread8(dev, port, REG_PORT_PME_CTRL, &pme_ctrl);
 	if (ret)
@@ -96,6 +96,8 @@ void ksz9477_get_wol(struct ksz_device *dev, int port,
 
 	if (pme_ctrl & PME_WOL_MAGICPKT)
 		wol->wolopts |= WAKE_MAGIC;
+	if (pme_ctrl & (PME_WOL_LINKUP | PME_WOL_ENERGY))
+		wol->wolopts |= WAKE_PHY;
 }
 
 int ksz9477_set_wol(struct ksz_device *dev, int port,
@@ -104,7 +106,7 @@ int ksz9477_set_wol(struct ksz_device *dev, int port,
 	u8 pme_conf, pme_ctrl = 0;
 	int ret;
 
-	if (wol->wolopts & ~WAKE_MAGIC)
+	if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
 		return -EINVAL;
 
 	ret = ksz_read8(dev, REG_SW_PME_CTRL, &pme_conf);
@@ -120,6 +122,8 @@ int ksz9477_set_wol(struct ksz_device *dev, int port,
 
 	if (wol->wolopts & WAKE_MAGIC)
 		pme_ctrl |= PME_WOL_MAGICPKT;
+	if (wol->wolopts & WAKE_PHY)
+		pme_ctrl |= PME_WOL_LINKUP | PME_WOL_ENERGY;
 
 	return ksz_pwrite8(dev, port, REG_PORT_PME_CTRL, pme_ctrl);
 }
-- 
2.39.2