wireguard-linux/drivers/cpuidle/Kconfig.arm, branch jd/unified-crypt-queue

cpuidle: Refactor and move out NVIDIA Tegra20 driver into drivers/cpuidle

2020-03-13T10:31:58Z

The driver's code is refactored in a way that will make it easy to support Tegra30/114/124 SoCs by this unified driver later on. The current functionality is equal to the old Tegra20 driver, only the code's structure changed a tad. This is also a proper platform driver now. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Acked-by: Daniel Lezcano Signed-off-by: Thierry Reding

cpuidle: arm: Enable compile testing for some of drivers

2020-01-14T22:48:46Z

Some of cpuidle drivers for ARMv7 can be compile tested on this architecture because they do not depend on mach-specific bits. Enable compile testing for big.LITTLE, Kirkwood, Zynq, AT91, Exynos and mvebu cpuidle drivers. Signed-off-by: Krzysztof Kozlowski Acked-by: Daniel Lezcano Signed-off-by: Rafael J. Wysocki

cpuidle: minor Kconfig help text fixes

2019-11-29T10:49:32Z

End sentences in help text with a period (aka full stop). Signed-off-by: Randy Dunlap Signed-off-by: Rafael J. Wysocki

cpuidle: Fix Kconfig indentation

2019-11-29T10:47:35Z

Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^ /\t/' -i */Kconfig Signed-off-by: Krzysztof Kozlowski Signed-off-by: Rafael J. Wysocki

ARM: psci: cpuidle: Enable PSCI CPUidle driver

2019-08-09T16:51:39Z

Allow selection of the PSCI CPUidle in the kernel by updating the respective Kconfig entry. Remove PSCI callbacks from ARM/ARM64 generic CPU ops to prevent the PSCI idle driver from clashing with the generic ARM CPUidle driver initialization, that relies on CPU ops to initialize and enter idle states. Signed-off-by: Lorenzo Pieralisi Reviewed-by: Ulf Hansson Cc: Will Deacon Cc: Ulf Hansson Cc: Sudeep Holla Cc: Daniel Lezcano Cc: Catalin Marinas Cc: Mark Rutland Cc: "Rafael J. Wysocki" Signed-off-by: Will Deacon

ARM: psci: cpuidle: Introduce PSCI CPUidle driver

2019-08-09T16:51:39Z

PSCI firmware is the standard power management control for all ARM64 based platforms and it is also deployed on some ARM 32 bit platforms to date. Idle state entry in PSCI is currently achieved by calling arm_cpuidle_init() and arm_cpuidle_suspend() in a generic idle driver, which in turn relies on ARM/ARM64 CPUidle back-end to relay the call into PSCI firmware if PSCI is the boot method. Given that PSCI is the standard idle entry method on ARM64 systems (which means that no other CPUidle driver are expected on ARM64 platforms - so PSCI is already a generic idle driver), in order to simplify idle entry and code maintenance, it makes sense to have a PSCI specific idle driver so that idle code that it is currently living in drivers/firmware directory can be hoisted out of it and moved where it belongs, into a full-fledged PSCI driver, leaving PSCI code in drivers/firmware as a pure firmware interface, as it should be. Implement a PSCI CPUidle driver. By default it is a silent Kconfig entry which is left unselected, since it selection would clash with the generic ARM CPUidle driver that provides a PSCI based idle driver through the arm/arm64 arches back-ends CPU operations. Signed-off-by: Lorenzo Pieralisi Acked-by: Daniel Lezcano Reviewed-by: Ulf Hansson Reviewed-by: Sudeep Holla Cc: Ulf Hansson Cc: Sudeep Holla Cc: Daniel Lezcano Cc: Mark Rutland Cc: "Rafael J. Wysocki" Signed-off-by: Will Deacon

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46Z

Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

ARM: cpuidle: Support asymmetric idle definition

2017-06-23T23:51:00Z

Some hardware have clusters with different idle states. The current code does not support this and fails as it expects all the idle states to be identical. Because of this, the Mediatek mtk8173 had to create the same idle state for a big.Little system and now the Hisilicon 960 is facing the same situation. Solve this by simply assuming the multiple driver will be needed for all the platforms using the ARM generic cpuidle driver which makes sense because of the different topologies we can support with a single kernel for ARM32 or ARM64. Every CPU has its own driver, so every single CPU can specify in the DT the idle states. This simple approach allows to support the future dynamIQ system, current SMP and HMP. Tested on: - 96boards: Hikey 620 - 96boards: Hikey 960 - 96boards: dragonboard410c - Mediatek 8173 Tested-by: Leo Yan Signed-off-by: Daniel Lezcano Acked-by: Sudeep Holla Signed-off-by: Rafael J. Wysocki

ARM: cpuidle: Enable the ARM64 driver for both ARM32/ARM64

2015-03-24T09:16:11Z

ARM32 and ARM64 have the same DT definitions and the same approaches. The generic ARM cpuidle driver can be put in common for those two architectures. Signed-off-by: Daniel Lezcano Acked-by: Kevin Hilman Acked-by: Rob Herring Acked-by: Lorenzo Pieralisi Tested-by: Lorenzo Pieralisi

cpuidle: exynos: add coupled cpuidle support for exynos4210

2015-01-29T23:39:15Z

The following patch adds coupled cpuidle support for Exynos4210 to an existing cpuidle-exynos driver. As a result it enables AFTR mode to be used by default on Exynos4210 without the need to hot unplug CPU1 first. The patch is heavily based on earlier cpuidle-exynos4210 driver from Daniel Lezcano: http://www.spinics.net/lists/linux-samsung-soc/msg28134.html Changes from Daniel's code include: - porting code to current kernels - fixing it to work on my setup (by using S5P_INFORM register instead of S5P_VA_SYSRAM one on Revison 1.1 and retrying poking CPU1 out of the BOOT ROM if necessary) - fixing rare lockup caused by waiting for CPU1 to get stuck in the BOOT ROM (CPU hotplug code in arch/arm/mach-exynos/platsmp.c doesn't require this and works fine) - moving Exynos specific code to arch/arm/mach-exynos/pm.c - using cpu_boot_reg_base() helper instead of BOOT_VECTOR macro - using exynos_cpu_*() helpers instead of accessing registers directly - using arch_send_wakeup_ipi_mask() instead of dsb_sev() (this matches CPU hotplug code in arch/arm/mach-exynos/platsmp.c) - integrating separate exynos4210-cpuidle driver into existing exynos-cpuidle one Cc: Colin Cross Cc: Kukjin Kim Cc: Krzysztof Kozlowski Cc: Tomasz Figa Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Daniel Lezcano Acked-by: Kyungmin Park Signed-off-by: Kukjin Kim