From: Claudiu Manoil <claudiu.manoil@nxp.com>
Date: Thu, 14 Nov 2019 17:03:20 +0200
Subject: net: mscc: ocelot: move resource ioremap and regmap init to common
 code

Git-commit: 259630e08c2135df6582040b20bd5bb1383964a3
Patch-mainline: v5.5-rc1
References: jsc#SLE-9263

Let's make this ioremap and regmap init code common.  It should not
be platform dependent as it should be usable by PCI devices too.
Use better names where necessary to avoid clashes.

Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
 drivers/net/ethernet/mscc/ocelot.h       |  4 +---
 drivers/net/ethernet/mscc/ocelot_board.c | 17 ++++++++++-------
 drivers/net/ethernet/mscc/ocelot_io.c    | 14 +++++---------
 3 files changed, 16 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h
index 4d8e769ccad9..b5802cea7cc4 100644
--- a/drivers/net/ethernet/mscc/ocelot.h
+++ b/drivers/net/ethernet/mscc/ocelot.h
@@ -546,9 +546,7 @@ void ocelot_port_writel(struct ocelot_port *port, u32 val, u32 reg);
 
 int ocelot_regfields_init(struct ocelot *ocelot,
 			  const struct reg_field *const regfields);
-struct regmap *ocelot_io_platform_init(struct ocelot *ocelot,
-				       struct platform_device *pdev,
-				       const char *name);
+struct regmap *ocelot_regmap_init(struct ocelot *ocelot, struct resource *res);
 
 #define ocelot_field_write(ocelot, reg, val) regmap_field_write((ocelot)->regfields[(reg)], (val))
 #define ocelot_field_read(ocelot, reg, val) regmap_field_read((ocelot)->regfields[(reg)], (val))
diff --git a/drivers/net/ethernet/mscc/ocelot_board.c b/drivers/net/ethernet/mscc/ocelot_board.c
index 811599f32910..ddb34f17fa52 100644
--- a/drivers/net/ethernet/mscc/ocelot_board.c
+++ b/drivers/net/ethernet/mscc/ocelot_board.c
@@ -268,7 +268,7 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
 		enum ocelot_target id;
 		char *name;
 		u8 optional:1;
-	} res[] = {
+	} io_target[] = {
 		{ SYS, "sys" },
 		{ REW, "rew" },
 		{ QSYS, "qsys" },
@@ -288,20 +288,23 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, ocelot);
 	ocelot->dev = &pdev->dev;
 
-	for (i = 0; i < ARRAY_SIZE(res); i++) {
+	for (i = 0; i < ARRAY_SIZE(io_target); i++) {
 		struct regmap *target;
+		struct resource *res;
+
+		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+						   io_target[i].name);
 
-		target = ocelot_io_platform_init(ocelot, pdev, res[i].name);
+		target = ocelot_regmap_init(ocelot, res);
 		if (IS_ERR(target)) {
-			if (res[i].optional) {
-				ocelot->targets[res[i].id] = NULL;
+			if (io_target[i].optional) {
+				ocelot->targets[io_target[i].id] = NULL;
 				continue;
 			}
-
 			return PTR_ERR(target);
 		}
 
-		ocelot->targets[res[i].id] = target;
+		ocelot->targets[io_target[i].id] = target;
 	}
 
 	hsio = syscon_regmap_lookup_by_compatible("mscc,ocelot-hsio");
diff --git a/drivers/net/ethernet/mscc/ocelot_io.c b/drivers/net/ethernet/mscc/ocelot_io.c
index c6db8ad31fdf..b229b1cb68ef 100644
--- a/drivers/net/ethernet/mscc/ocelot_io.c
+++ b/drivers/net/ethernet/mscc/ocelot_io.c
@@ -97,20 +97,16 @@ static struct regmap_config ocelot_regmap_config = {
 	.reg_stride	= 4,
 };
 
-struct regmap *ocelot_io_platform_init(struct ocelot *ocelot,
-				       struct platform_device *pdev,
-				       const char *name)
+struct regmap *ocelot_regmap_init(struct ocelot *ocelot, struct resource *res)
 {
-	struct resource *res;
 	void __iomem *regs;
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
 	regs = devm_ioremap_resource(ocelot->dev, res);
 	if (IS_ERR(regs))
 		return ERR_CAST(regs);
 
-	ocelot_regmap_config.name = name;
-	return devm_regmap_init_mmio(ocelot->dev, regs,
-				     &ocelot_regmap_config);
+	ocelot_regmap_config.name = res->name;
+
+	return devm_regmap_init_mmio(ocelot->dev, regs, &ocelot_regmap_config);
 }
-EXPORT_SYMBOL(ocelot_io_platform_init);
+EXPORT_SYMBOL(ocelot_regmap_init);
-- 
2.16.4