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From: Michael Grzeschik <m.grzeschik@pengutronix.de>
To: netdev@vger.kernel.org
Cc: andrew@lunn.ch, f.fainelli@gmail.com, davem@davemloft.net,
	kernel@pengutronix.de, matthias.schiffer@ew.tq-group.com,
	woojung.huh@microchip.com, UNGLinuxDriver@microchip.com
Subject: [PATCH v5 2/6] net: dsa: microchip: ksz8795: move cpu_select_interface to extra function
Date: Mon,  7 Dec 2020 13:56:23 +0100	[thread overview]
Message-ID: <20201207125627.30843-3-m.grzeschik@pengutronix.de> (raw)
In-Reply-To: <20201207125627.30843-1-m.grzeschik@pengutronix.de>

This patch moves the cpu interface selection code to a individual
function specific for ksz8795. It will make it simpler to customize the
code path for different switches supported by this driver.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>

---
v1 -> v5: - extracted this from previous bigger patch
---
 drivers/net/dsa/microchip/ksz8795.c | 92 ++++++++++++++++-------------
 1 file changed, 50 insertions(+), 42 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index 1d12597a1c8a4..53cb41087a594 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -911,10 +911,58 @@ static void ksz8_port_mirror_del(struct dsa_switch *ds, int port,
 			     PORT_MIRROR_SNIFFER, false);
 }
 
+static void ksz8795_cpu_interface_select(struct ksz_device *dev, int port)
+{
+	struct ksz_port *p = &dev->ports[port];
+	u8 data8;
+
+	if (!p->interface && dev->compat_interface) {
+		dev_warn(dev->dev,
+			 "Using legacy switch \"phy-mode\" property, because it is missing on port %d node. "
+			 "Please update your device tree.\n",
+			 port);
+		p->interface = dev->compat_interface;
+	}
+
+	/* Configure MII interface for proper network communication. */
+	ksz_read8(dev, REG_PORT_5_CTRL_6, &data8);
+	data8 &= ~PORT_INTERFACE_TYPE;
+	data8 &= ~PORT_GMII_1GPS_MODE;
+	switch (p->interface) {
+	case PHY_INTERFACE_MODE_MII:
+		p->phydev.speed = SPEED_100;
+		break;
+	case PHY_INTERFACE_MODE_RMII:
+		data8 |= PORT_INTERFACE_RMII;
+		p->phydev.speed = SPEED_100;
+		break;
+	case PHY_INTERFACE_MODE_GMII:
+		data8 |= PORT_GMII_1GPS_MODE;
+		data8 |= PORT_INTERFACE_GMII;
+		p->phydev.speed = SPEED_1000;
+		break;
+	default:
+		data8 &= ~PORT_RGMII_ID_IN_ENABLE;
+		data8 &= ~PORT_RGMII_ID_OUT_ENABLE;
+		if (p->interface == PHY_INTERFACE_MODE_RGMII_ID ||
+		    p->interface == PHY_INTERFACE_MODE_RGMII_RXID)
+			data8 |= PORT_RGMII_ID_IN_ENABLE;
+		if (p->interface == PHY_INTERFACE_MODE_RGMII_ID ||
+		    p->interface == PHY_INTERFACE_MODE_RGMII_TXID)
+			data8 |= PORT_RGMII_ID_OUT_ENABLE;
+		data8 |= PORT_GMII_1GPS_MODE;
+		data8 |= PORT_INTERFACE_RGMII;
+		p->phydev.speed = SPEED_1000;
+		break;
+	}
+	ksz_write8(dev, REG_PORT_5_CTRL_6, data8);
+	p->phydev.duplex = 1;
+}
+
 static void ksz8_port_setup(struct ksz_device *dev, int port, bool cpu_port)
 {
 	struct ksz_port *p = &dev->ports[port];
-	u8 data8, member;
+	u8 member;
 
 	/* enable broadcast storm limit */
 	ksz_port_cfg(dev, port, P_BCAST_STORM_CTRL, PORT_BROADCAST_STORM, true);
@@ -931,47 +979,7 @@ static void ksz8_port_setup(struct ksz_device *dev, int port, bool cpu_port)
 	ksz_port_cfg(dev, port, P_PRIO_CTRL, PORT_802_1P_ENABLE, true);
 
 	if (cpu_port) {
-		if (!p->interface && dev->compat_interface) {
-			dev_warn(dev->dev,
-				 "Using legacy switch \"phy-mode\" property, because it is missing on port %d node. "
-				 "Please update your device tree.\n",
-				 port);
-			p->interface = dev->compat_interface;
-		}
-
-		/* Configure MII interface for proper network communication. */
-		ksz_read8(dev, REG_PORT_5_CTRL_6, &data8);
-		data8 &= ~PORT_INTERFACE_TYPE;
-		data8 &= ~PORT_GMII_1GPS_MODE;
-		switch (p->interface) {
-		case PHY_INTERFACE_MODE_MII:
-			p->phydev.speed = SPEED_100;
-			break;
-		case PHY_INTERFACE_MODE_RMII:
-			data8 |= PORT_INTERFACE_RMII;
-			p->phydev.speed = SPEED_100;
-			break;
-		case PHY_INTERFACE_MODE_GMII:
-			data8 |= PORT_GMII_1GPS_MODE;
-			data8 |= PORT_INTERFACE_GMII;
-			p->phydev.speed = SPEED_1000;
-			break;
-		default:
-			data8 &= ~PORT_RGMII_ID_IN_ENABLE;
-			data8 &= ~PORT_RGMII_ID_OUT_ENABLE;
-			if (p->interface == PHY_INTERFACE_MODE_RGMII_ID ||
-			    p->interface == PHY_INTERFACE_MODE_RGMII_RXID)
-				data8 |= PORT_RGMII_ID_IN_ENABLE;
-			if (p->interface == PHY_INTERFACE_MODE_RGMII_ID ||
-			    p->interface == PHY_INTERFACE_MODE_RGMII_TXID)
-				data8 |= PORT_RGMII_ID_OUT_ENABLE;
-			data8 |= PORT_GMII_1GPS_MODE;
-			data8 |= PORT_INTERFACE_RGMII;
-			p->phydev.speed = SPEED_1000;
-			break;
-		}
-		ksz_write8(dev, REG_PORT_5_CTRL_6, data8);
-		p->phydev.duplex = 1;
+		ksz8795_cpu_interface_select(dev, port);
 
 		member = dev->port_mask;
 	} else {
-- 
2.29.2


  parent reply	other threads:[~2020-12-07 12:57 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-07 12:56 [PATCH v5 0/6] microchip: add support for ksz88x3 driver family Michael Grzeschik
2020-12-07 12:56 ` [PATCH v5 1/6] net: dsa: microchip: ksz8795: change drivers prefix to be generic Michael Grzeschik
2020-12-07 12:56 ` Michael Grzeschik [this message]
2020-12-07 12:56 ` [PATCH v5 3/6] net: dsa: microchip: ksz8795: move register offsets and shifts to separate struct Michael Grzeschik
2020-12-07 14:11   ` kernel test robot
2020-12-07 14:11     ` kernel test robot
2020-12-07 15:01   ` David Miller
2020-12-07 20:02   ` Tristram.Ha
2020-12-07 21:44     ` Michael Grzeschik
2020-12-15 16:31       ` Michael Grzeschik
2020-12-11  4:21   ` kernel test robot
2020-12-11  4:21     ` kernel test robot
2020-12-07 12:56 ` [PATCH v5 4/6] net: dsa: microchip: ksz8795: add support for ksz88xx chips Michael Grzeschik
2020-12-16  6:33   ` Tristram.Ha
2021-02-01 18:37     ` Michael Grzeschik
2020-12-07 12:56 ` [PATCH v5 5/6] net: dsa: microchip: Add Microchip KSZ8863 SPI based driver support Michael Grzeschik
2020-12-07 12:56 ` [PATCH v5 6/6] dt-bindings: net: dsa: document additional Microchip KSZ8863/8873 switch Michael Grzeschik

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