diff options
| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2013-11-07 18:37:14 +0000 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2014-03-10 13:38:37 +0800 |
| commit | 8c2e5de7bd8d0d9756bfe63f93dc98a72c60e4a9 (patch) | |
| tree | 493d2ca0a1a4f7c0d1941f3771241f330c95fd7c | |
| parent | 9bbf6e3e9c2a9c6eef7892c03cd9d56562be9148 (diff) | |
arm64: kernel: add PM build infrastructure
This patch adds the required makefile and kconfig entries to enable PM
for arm64 systems.
The kernel relies on the cpu_{suspend}/{resume} infrastructure to
properly save the context for a CPU and put it to sleep, hence this
patch adds the config option required to enable cpu_{suspend}/{resume}
API.
In order to rely on the CPU PM implementation for saving and restoring
of CPU subsystems like GIC and PMU, the arch Kconfig must be also
augmented to select the CONFIG_CPU_PM option when SUSPEND or CPU_IDLE
kernel implementations are selected.
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Conflicts:
arch/arm64/Kconfig
arch/arm64/kernel/Makefile
| -rw-r--r-- | arch/arm64/Kconfig | 6 | ||||
| -rw-r--r-- | arch/arm64/kernel/Makefile | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 199aba1ecb8b..b196eda2abad 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -11,6 +11,7 @@ config ARM64 select ARM_GIC select CLONE_BACKWARDS select COMMON_CLK + select CPU_PM if (SUSPEND || CPU_IDLE) select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS_BROADCAST if SMP select GENERIC_IOMAP @@ -364,6 +365,11 @@ menu "Power management options" source "kernel/power/Kconfig" source "drivers/cpufreq/Kconfig" +config ARCH_SUSPEND_POSSIBLE + def_bool y + +config ARM64_CPU_SUSPEND + def_bool PM_SLEEP endmenu diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 2d145e38ad49..c6172392b20d 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -19,6 +19,7 @@ arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o arm64-obj-$(CONFIG_HAVE_HW_BREAKPOINT)+= hw_breakpoint.o arm64-obj-$(CONFIG_EARLY_PRINTK) += early_printk.o arm64-obj-$(CONFIG_ARM_CPU_TOPOLOGY) += topology.o +arm64-obj-$(CONFIG_ARM64_CPU_SUSPEND) += sleep.o suspend.o obj-y += $(arm64-obj-y) vdso/ obj-m += $(arm64-obj-m) |