[RFC PATCH 12/14] arm64: kernel: add cpu_{suspend}/{resume} build infrastructure
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2013-08-30 17:32:30
Also in:
linux-pm
On Wed, Aug 28, 2013 at 12:36:04PM +0100, Lorenzo Pieralisi wrote:
quoted hunk ↗ jump to hunk
To enable the suspend infrastructure for the ARM64 kernel the corresponding Kconfig and Makefile entries must be updated. This patch adds a menu entry for power management options and entries to enable newly added suspend/resume implementation. Makefile changes add appropriate entries to include corresponding files in the kernel image. Signed-off-by: Lorenzo Pieralisi <redacted> --- arch/arm64/Kconfig | 12 ++++++++++++ arch/arm64/kernel/Makefile | 1 + 2 files changed, 13 insertions(+)diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 5855519..827d95e 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig@@ -272,6 +272,18 @@ config SYSVIPC_COMPAT endmenu +menu "Power management options" + +source "kernel/power/Kconfig" + +config ARCH_SUSPEND_POSSIBLE + def_bool y + +config ARM_CPU_SUSPEND + def_bool y
I think we should call this ARM64_CPU_SUSPEND. The cpuidle drivers need to be modified anyway since things like set_cr(), scu_power_mode() etc. no longer apply. If a driver supports both, that's great, it can select both ARM and ARM64. Longer term, I would like a generic cpuidle driver for PSCI with DT bindings for describing the sleep states, target residency (not sure how this would look like yet). -- Catalin