ARM: mvebu: prepare set_cpu_coherent() for future extension

This patch prepares the set_cpu_coherent() function in coherency.c to
be extended to support other SoCs than Armada XP. It will be needed on
Armada 38x to re-enable the coherency after exiting from suspend to
RAM.

This preparation simply moves the function further down in coherency.c
so that it can use coherency_type(), and uses that function to only do
the Armada XP specific work if we are on Armada XP.

Signed-off-by: Nadav Haklai <nadavh@marvell.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

diff --git a/arch/arm/mach-mvebu/coherency.c b/arch/arm/mach-mvebu/coherency.c
index e46e9ea..44eedf3 100644 (file)
--- a/arch/arm/mach-mvebu/coherency.c
+++ b/arch/arm/mach-mvebu/coherency.c
@@ -65,18 +65,6 @@ static const struct of_device_id of_coherency_table[] = {
 int ll_enable_coherency(void);
 void ll_add_cpu_to_smp_group(void);
 
-int set_cpu_coherent(void)
-{
-       if (!coherency_base) {
-               pr_warn("Can't make current CPU cache coherent.\n");
-               pr_warn("Coherency fabric is not initialized\n");
-               return 1;
-       }
-
-       ll_add_cpu_to_smp_group();
-       return ll_enable_coherency();
-}
-
 static int mvebu_hwcc_notifier(struct notifier_block *nb,
                               unsigned long event, void *__dev)
 {
@@ -206,6 +194,23 @@ static int coherency_type(void)
        return type;
 }
 
+int set_cpu_coherent(void)
+{
+       int type = coherency_type();
+
+       if (type == COHERENCY_FABRIC_TYPE_ARMADA_370_XP) {
+               if (!coherency_base) {
+                       pr_warn("Can't make current CPU cache coherent.\n");
+                       pr_warn("Coherency fabric is not initialized\n");
+                       return 1;
+               }
+               ll_add_cpu_to_smp_group();
+               return ll_enable_coherency();
+       }
+
+       return 0;
+}
+
 int coherency_available(void)
 {
        return coherency_type() != COHERENCY_FABRIC_TYPE_NONE;