This patch implements cpuidle_ops using psci. After this patch, we can use
cpuidle-arm.c with psci backend for both arm and arm64.
Signed-off-by: Jisheng Zhang <jszh...@marvell.com>
---
arch/arm/kernel/psci.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/arm/kernel/psci.c b/arch/arm/kernel/psci.c
index 7f6ff02..c5b94f5 100644
--- a/arch/arm/kernel/psci.c
+++ b/arch/arm/kernel/psci.c
@@ -13,6 +13,7 @@
* Author: Will Deacon <will.dea...@arm.com>
*/
+#include <linux/cpuidle.h>
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/of.h>
@@ -21,6 +22,7 @@
#include <uapi/linux/psci.h>
+#include <asm/cpuidle.h>
#include <asm/psci.h>
#include <asm/smp_plat.h>
@@ -47,6 +49,24 @@
*
*/
+#ifdef CONFIG_CPU_IDLE
+static int psci_cpuidle_suspend(int cpu, unsigned long arg)
+{
+ return cpu_psci_cpu_suspend(arg);
+}
+
+static int psci_cpuidle_init(struct device_node *node, int cpu)
+{
+ return cpu_psci_cpu_init_idle(cpu);
+}
+
+static struct cpuidle_ops psci_cpuidle_ops __initdata = {
+ .suspend = psci_cpuidle_suspend,
+ .init = psci_cpuidle_init,
+};
+CPUIDLE_METHOD_OF_DECLARE(psci_idle, "psci", &psci_cpuidle_ops);
+#endif
+
#ifdef CONFIG_SMP
extern void secondary_startup(void);
--
2.1.4
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