[PATCH v2 net-next 02/11] net: mscc: ocelot: filter out ocelot SoC specific PCS config from common path

[Vladimir Oltean <olteanv@gmail.com>]

From: Claudiu Manoil <claudiu.manoil@nxp.com>

The adjust_link routine should be generic enough to be (re)used by
any SoC that integrates a switch core compatible with the Ocelot
core switch driver.  Currently all configurations are generic except
for the PCS settings that are SoC specific.  Move these out to the
Ocelot SoC/board instance.

Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
---
Changes in v2:
Fixed an overzealous removal of EXPORT_SYMBOL(ocelot_chip_init) that
caused a build error.

 drivers/net/ethernet/mscc/ocelot.c       | 19 ++--------------
 drivers/net/ethernet/mscc/ocelot.h       |  8 ++++++-
 drivers/net/ethernet/mscc/ocelot_board.c | 29 +++++++++++++++++++++++-
 drivers/net/ethernet/mscc/ocelot_regs.c  |  3 ++-
 4 files changed, 39 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 3e7a2796c37d..2b6792ab0eda 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -455,23 +455,8 @@ static void ocelot_adjust_link(struct ocelot *ocelot, int port,
 	ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67),
 			   DEV_MAC_HDX_CFG);
 
-	/* Disable HDX fast control */
-	ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS,
-			   DEV_PORT_MISC);
-
-	/* SGMII only for now */
-	ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA,
-			   PCS1G_MODE_CFG);
-	ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
-
-	/* Enable PCS */
-	ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
-
-	/* No aneg on SGMII */
-	ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG);
-
-	/* No loopback */
-	ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG);
+	if (ocelot->ops->pcs_init)
+		ocelot->ops->pcs_init(ocelot, port);
 
 	/* Set Max Length and maximum tags allowed */
 	ocelot_port_writel(ocelot_port, VLAN_ETH_FRAME_LEN,
diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h
index b5802cea7cc4..7e28434c22c1 100644
--- a/drivers/net/ethernet/mscc/ocelot.h
+++ b/drivers/net/ethernet/mscc/ocelot.h
@@ -435,13 +435,19 @@ enum ocelot_tag_prefix {
 };
 
 struct ocelot_port;
+struct ocelot;
 
 struct ocelot_stat_layout {
 	u32 offset;
 	char name[ETH_GSTRING_LEN];
 };
 
+struct ocelot_ops {
+	void (*pcs_init)(struct ocelot *ocelot, int port);
+};
+
 struct ocelot {
+	const struct ocelot_ops *ops;
 	struct device *dev;
 
 	struct regmap *targets[TARGET_MAX];
@@ -553,7 +559,7 @@ struct regmap *ocelot_regmap_init(struct ocelot *ocelot, struct resource *res);
 
 int ocelot_init(struct ocelot *ocelot);
 void ocelot_deinit(struct ocelot *ocelot);
-int ocelot_chip_init(struct ocelot *ocelot);
+int ocelot_chip_init(struct ocelot *ocelot, const struct ocelot_ops *ops);
 int ocelot_probe_port(struct ocelot *ocelot, u8 port,
 		      void __iomem *regs,
 		      struct phy_device *phy);
diff --git a/drivers/net/ethernet/mscc/ocelot_board.c b/drivers/net/ethernet/mscc/ocelot_board.c
index ddb34f17fa52..de2da6d33d43 100644
--- a/drivers/net/ethernet/mscc/ocelot_board.c
+++ b/drivers/net/ethernet/mscc/ocelot_board.c
@@ -254,6 +254,33 @@ static const struct of_device_id mscc_ocelot_match[] = {
 };
 MODULE_DEVICE_TABLE(of, mscc_ocelot_match);
 
+static void ocelot_port_pcs_init(struct ocelot *ocelot, int port)
+{
+	struct ocelot_port *ocelot_port = ocelot->ports[port];
+
+	/* Disable HDX fast control */
+	ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS,
+			   DEV_PORT_MISC);
+
+	/* SGMII only for now */
+	ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA,
+			   PCS1G_MODE_CFG);
+	ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
+
+	/* Enable PCS */
+	ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
+
+	/* No aneg on SGMII */
+	ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG);
+
+	/* No loopback */
+	ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG);
+}
+
+static const struct ocelot_ops ocelot_ops = {
+	.pcs_init		= ocelot_port_pcs_init,
+};
+
 static int mscc_ocelot_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
@@ -315,7 +342,7 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
 
 	ocelot->targets[HSIO] = hsio;
 
-	err = ocelot_chip_init(ocelot);
+	err = ocelot_chip_init(ocelot, &ocelot_ops);
 	if (err)
 		return err;
 
diff --git a/drivers/net/ethernet/mscc/ocelot_regs.c b/drivers/net/ethernet/mscc/ocelot_regs.c
index e59977d20400..b88b5899b227 100644
--- a/drivers/net/ethernet/mscc/ocelot_regs.c
+++ b/drivers/net/ethernet/mscc/ocelot_regs.c
@@ -423,7 +423,7 @@ static void ocelot_pll5_init(struct ocelot *ocelot)
 		     HSIO_PLL5G_CFG2_AMPC_SEL(0x10));
 }
 
-int ocelot_chip_init(struct ocelot *ocelot)
+int ocelot_chip_init(struct ocelot *ocelot, const struct ocelot_ops *ops)
 {
 	int ret;
 
@@ -431,6 +431,7 @@ int ocelot_chip_init(struct ocelot *ocelot)
 	ocelot->stats_layout = ocelot_stats_layout;
 	ocelot->num_stats = ARRAY_SIZE(ocelot_stats_layout);
 	ocelot->shared_queue_sz = 224 * 1024;
+	ocelot->ops = ops;
 
 	ret = ocelot_regfields_init(ocelot, ocelot_regfields);
 	if (ret)
-- 
2.17.1