linux-kernel - [PATCH net-next 4/4] net: renesas: rswitch: add mdio C22 support

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Message-Id: <20241208155236.108582-5-nikita.yoush@cogentembedded.com>
Date: Sun,  8 Dec 2024 20:52:36 +0500
From: Nikita Yushchenko <nikita.yoush@...entembedded.com>
To: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Andrew Lunn <andrew@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>
Cc: netdev@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Michael Dege <michael.dege@...esas.com>,
	Christian Mardmoeller <christian.mardmoeller@...esas.com>,
	Dennis Ostermann <dennis.ostermann@...esas.com>,
	Nikita Yushchenko <nikita.yoush@...entembedded.com>
Subject: [PATCH net-next 4/4] net: renesas: rswitch: add mdio C22 support

The generic MPSM operation added by the previous patch can be used both
for C45 and C22.

Add handlers for C22 operations.

Signed-off-by: Nikita Yushchenko <nikita.yoush@...entembedded.com>
---
 drivers/net/ethernet/renesas/rswitch.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c
index 8dc5ddfee01d..444e7576b31c 100644
--- a/drivers/net/ethernet/renesas/rswitch.c
+++ b/drivers/net/ethernet/renesas/rswitch.c
@@ -1225,6 +1225,23 @@ static int rswitch_etha_mii_write_c45(struct mii_bus *bus, int addr, int devad,
 				    MPSM_POP_WRITE, val);
 }
 
+static int rswitch_etha_mii_read_c22(struct mii_bus *bus, int phyad, int regad)
+{
+	struct rswitch_etha *etha = bus->priv;
+
+	return rswitch_etha_mpsm_op(etha, true, MPSM_MMF_C22, phyad, regad,
+				    MPSM_POP_READ_C22, 0);
+}
+
+static int rswitch_etha_mii_write_c22(struct mii_bus *bus, int phyad,
+				      int regad, u16 val)
+{
+	struct rswitch_etha *etha = bus->priv;
+
+	return rswitch_etha_mpsm_op(etha, false, MPSM_MMF_C22, phyad, regad,
+				    MPSM_POP_WRITE, val);
+}
+
 /* Call of_node_put(port) after done */
 static struct device_node *rswitch_get_port_node(struct rswitch_device *rdev)
 {
@@ -1307,6 +1324,8 @@ static int rswitch_mii_register(struct rswitch_device *rdev)
 	mii_bus->priv = rdev->etha;
 	mii_bus->read_c45 = rswitch_etha_mii_read_c45;
 	mii_bus->write_c45 = rswitch_etha_mii_write_c45;
+	mii_bus->read = rswitch_etha_mii_read_c22;
+	mii_bus->write = rswitch_etha_mii_write_c22;
 	mii_bus->parent = &rdev->priv->pdev->dev;
 
 	mdio_np = of_get_child_by_name(rdev->np_port, "mdio");
-- 
2.39.5