arm64: add support for ACPI Low Power Idle(LPI) (5a611ed9) · Commits · 戴 / test

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

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