Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5a611ed9 authored by Sudeep Holla's avatar Sudeep Holla Committed by Rafael J. Wysocki
Browse files

arm64: add support for ACPI Low Power Idle(LPI) 



This patch adds appropriate callbacks to support ACPI Low Power Idle
(LPI) on ARM64.

Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Acked-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent c2a25c14

arch/arm64/kernel/cpuidle.c

+18 −0
Original line number Diff line number Diff line
@@ -9,6 +9,9 @@ 
 * published by the Free Software Foundation.

 */



#include <linux/acpi.h>

#include <linux/cpuidle.h>

#include <linux/cpu_pm.h>

#include <linux/of.h>

#include <linux/of_device.h>
@@ -39,3 +42,18 @@ int arm_cpuidle_suspend(int index) 


	return cpu_ops[cpu]->cpu_suspend(index);

}



#ifdef CONFIG_ACPI



#include <acpi/processor.h>



int acpi_processor_ffh_lpi_probe(unsigned int cpu)

{

	return arm_cpuidle_init(cpu);

}



int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi)

{

	return CPU_PM_CPU_IDLE_ENTER(arm_cpuidle_suspend, lpi->index);

}

#endif