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ARM: mvebu: prepare set_cpu_coherent() for future extension

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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>
This commit is contained in:
Nadav Haklai 2015-07-08 17:02:30 +02:00 committed by Gregory CLEMENT
parent d770e558e2
commit 01049a5deb
1 changed files with 17 additions and 12 deletions
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29
arch/arm/mach-mvebu/coherency.c
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@ -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;