soc: fsl: guts: add a central fsl_guts_read() function

Add a central fsl_guts_read() function which will take into account the
endianness that was already determined. No point is duplicating the
if-else statement each time we need to read a DCFG register.

Signed-off-by: Ioana Ciornei <[email protected]>
Signed-off-by: Vladimir Oltean <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Christophe Leroy (CS GROUP) <[email protected]>

drivers/soc/fsl/guts.c

@@ -111,6 +111,14 @@ static struct fsl_soc_guts {
 	bool little_endian;
 } soc;
 
+static unsigned int fsl_guts_read(const void __iomem *reg)
+{
+	if (soc.little_endian)
+		return ioread32(reg);
+
+	return ioread32be(reg);
+}
+
 static const struct fsl_soc_die_attr *fsl_soc_die_match(
 	u32 svr, const struct fsl_soc_die_attr *matches)
 {
@@ -209,10 +217,7 @@ static int __init fsl_guts_init(void)
 	}
 
 	soc.little_endian = of_property_read_bool(np, "little-endian");
-	if (soc.little_endian)
-		svr = ioread32(&soc.dcfg_ccsr->svr);
-	else
-		svr = ioread32be(&soc.dcfg_ccsr->svr);
+	svr = fsl_guts_read(&soc.dcfg_ccsr->svr);
 	of_node_put(np);
 
 	/* Register soc device */