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linux/drivers/cpuidle/Kconfig.arm

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treewide: Add SPDX license identifier - Makefile/Kconfig 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 <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-19 15:07:45 +03:00
# SPDX-License-Identifier: GPL-2.0-only
cpuidle: Add Kconfig.arm and move calxeda, kirkwood and zynq Add Kconfig.arm for ARM cpuidle drivers and moves calxeda, kirkwood and zynq to Kconfig.arm. Like in the cpufreq menu, "CPU Idle" menu is added to drivers/cpuidle/Kconfig. Signed-off-by: Sahara <keun-o.park@windriver.com>
2013-07-03 12:49:55 +04:00
#
# ARM CPU Idle drivers
#
ARM: cpuidle: Enable the ARM64 driver for both ARM32/ARM64 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 <daniel.lezcano@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> Acked-by: Rob Herring <robherring2@gmail.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2015-02-02 18:32:46 +03:00
config ARM_CPUIDLE
cpuidle: cpuidle-arm: remove arm64 support Since commit 788961462f34 ("ARM: psci: cpuidle: Enable PSCI CPUidle driver") the generic ARM cpuidle driver doesn't probe anymore because arm_cpuidle_init() will always return -EOPNOTSUPP. That is, because the mentioned commit removes the only .cpu_suspend and .cpu_init_idle provider. Signed-off-by: Michael Walle <michael@walle.cc> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20220529181329.2345722-2-michael@walle.cc Signed-off-by: Will Deacon <will@kernel.org>
2022-05-29 21:13:28 +03:00
bool "Generic ARM CPU idle Driver"
depends on ARM
cpuidle: Fix Kconfig indentation 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 <krzk@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-11-21 06:19:12 +03:00
select DT_IDLE_STATES
ARM: cpuidle: Support asymmetric idle definition 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 <leo.yan@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-12 18:55:10 +03:00
select CPU_IDLE_MULTIPLE_DRIVERS
cpuidle: Fix Kconfig indentation 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 <krzk@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-11-21 06:19:12 +03:00
help
Select this to enable generic cpuidle driver for ARM.
It provides a generic idle driver whose idle states are configured
at run-time through DT nodes. The CPUidle suspend backend is
initialized by calling the CPU operations init idle hook
provided by architecture code.
ARM: cpuidle: Enable the ARM64 driver for both ARM32/ARM64 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 <daniel.lezcano@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> Acked-by: Rob Herring <robherring2@gmail.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2015-02-02 18:32:46 +03:00
ARM: psci: cpuidle: Introduce PSCI CPUidle driver 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 <lorenzo.pieralisi@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Signed-off-by: Will Deacon <will@kernel.org>
2019-08-09 14:03:10 +03:00
config ARM_PSCI_CPUIDLE
ARM: psci: cpuidle: Enable PSCI CPUidle driver 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 <lorenzo.pieralisi@arm.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Cc: Will Deacon <will@kernel.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Signed-off-by: Will Deacon <will@kernel.org>
2019-08-09 14:03:11 +03:00
bool "PSCI CPU idle Driver"
ARM: psci: cpuidle: Introduce PSCI CPUidle driver 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 <lorenzo.pieralisi@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Signed-off-by: Will Deacon <will@kernel.org>
2019-08-09 14:03:10 +03:00
depends on ARM_PSCI_FW
select DT_IDLE_STATES
select CPU_IDLE_MULTIPLE_DRIVERS
help
Select this to enable PSCI firmware based CPUidle driver for ARM.
It provides an idle driver that is capable of detecting and
managing idle states through the PSCI firmware interface.
cpuidle: psci: Do not suspend topology CPUs on PREEMPT_RT The runtime Power Management of CPU topology is not compatible with PREEMPT_RT: 1. Core cpuidle path disables IRQs. 2. Core cpuidle calls cpuidle-psci. 3. cpuidle-psci in __psci_enter_domain_idle_state() calls pm_runtime_put_sync_suspend() and pm_runtime_get_sync() which use spinlocks (which are sleeping on PREEMPT_RT). Deep sleep modes are not a priority of Realtime kernels because the latencies might become unpredictable. On the other hand the PSCI CPU idle power domain is a parent of other devices and power domain controllers, thus it cannot be simply skipped (e.g. on Qualcomm SM8250). Disable the idle callbacks in cpuidle-psci and mark the domain as always on. This is a trade-off between making PREEMPT_RT working and still having a proper power domain hierarchy in the system. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Adrien Thierry <athierry@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-01-25 14:34:18 +03:00
The driver has limitations when used with PREEMPT_RT:
- If the idle states are described with the non-hierarchical layout,
all idle states are still available.
- If the idle states are described with the hierarchical layout,
only the idle states defined per CPU are available, but not the ones
being shared among a group of CPUs (aka cluster idle states).
cpuidle: psci: Split into two separate build objects The combined build object for the PSCI cpuidle driver and the PSCI PM domain, is a bit messy. Therefore let's split it up by adding a new Kconfig ARM_PSCI_CPUIDLE_DOMAIN and convert into two separate objects. Reviewed-by: Lina Iyer <ilina@codeaurora.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-07-07 15:58:00 +03:00
config ARM_PSCI_CPUIDLE_DOMAIN
bool "PSCI CPU idle Domain"
depends on ARM_PSCI_CPUIDLE
depends on PM_GENERIC_DOMAINS_OF
cpuidle: Factor-out power domain related code from PSCI domain driver The generic power domain related code in PSCI domain driver is largely independent of PSCI and can be shared with RISC-V SBI domain driver hence we factor-out this code into dt_idle_genpd.c and dt_idle_genpd.h. Signed-off-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-02-10 08:49:44 +03:00
select DT_IDLE_GENPD
cpuidle: psci: Split into two separate build objects The combined build object for the PSCI cpuidle driver and the PSCI PM domain, is a bit messy. Therefore let's split it up by adding a new Kconfig ARM_PSCI_CPUIDLE_DOMAIN and convert into two separate objects. Reviewed-by: Lina Iyer <ilina@codeaurora.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-07-07 15:58:00 +03:00
default y
help
Select this to enable the PSCI based CPUidle driver to use PM domains,
which is needed to support the hierarchical DT based layout of the
idle states.
drivers: cpuidle: rename ARM big.LITTLE driver config and makefile entries Following the reorganization of CPU idle drivers configurations into an ARM specific Kconfig, the existing idle drivers Kconfig entries were renamed and moved to the Kconfig.arm file. Makefile entries were updated accordingly. This patch renames the entries in Kconfig.arm and makefile to make the newly added big.LITTLE CPUidle driver compliant with the new naming convention. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2013-09-13 19:38:41 +04:00
config ARM_BIG_LITTLE_CPUIDLE
bool "Support for ARM big.LITTLE processors"
cpuidle: arm: Enable compile testing for some of drivers 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 <krzk@kernel.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-12-29 21:09:12 +03:00
depends on ARCH_VEXPRESS_TC2_PM || ARCH_EXYNOS || COMPILE_TEST
ARM: cpuidle: Enable the ARM64 driver for both ARM32/ARM64 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 <daniel.lezcano@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> Acked-by: Rob Herring <robherring2@gmail.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2015-02-02 18:32:46 +03:00
depends on MCPM && !ARM64
drivers: cpuidle: rename ARM big.LITTLE driver config and makefile entries Following the reorganization of CPU idle drivers configurations into an ARM specific Kconfig, the existing idle drivers Kconfig entries were renamed and moved to the Kconfig.arm file. Makefile entries were updated accordingly. This patch renames the entries in Kconfig.arm and makefile to make the newly added big.LITTLE CPUidle driver compliant with the new naming convention. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2013-09-13 19:38:41 +04:00
select ARM_CPU_SUSPEND
select CPU_IDLE_MULTIPLE_DRIVERS
drivers: cpuidle: initialize big.LITTLE driver through DT With the introduction of DT based idle states, CPUidle drivers for ARM can now initialize idle states data through properties in the device tree. This patch adds code to the big.LITTLE CPUidle driver to dynamically initialize idle states data through the updated device tree source file. Cc: Chander Kashyap <k.chander@samsung.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2014-06-24 19:20:28 +04:00
select DT_IDLE_STATES
drivers: cpuidle: rename ARM big.LITTLE driver config and makefile entries Following the reorganization of CPU idle drivers configurations into an ARM specific Kconfig, the existing idle drivers Kconfig entries were renamed and moved to the Kconfig.arm file. Makefile entries were updated accordingly. This patch renames the entries in Kconfig.arm and makefile to make the newly added big.LITTLE CPUidle driver compliant with the new naming convention. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2013-09-13 19:38:41 +04:00
help
Select this option to enable CPU idle driver for big.LITTLE based
ARM systems. Driver manages CPUs coordination through MCPM and
define different C-states for little and big cores through the
multiple CPU idle drivers infrastructure.
ARM: clps711x: Add cpuidle driver Add cpuidle support for ARM Cirrus Logic CLPS711X CPUs. This CPU has an unique internal register and write to this location will put the system into the Idle State by halting the clock to the processor until an interrupt is generated. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2014-03-22 09:44:35 +04:00
config ARM_CLPS711X_CPUIDLE
bool "CPU Idle Driver for CLPS711X processors"
ARM: cpuidle: Enable the ARM64 driver for both ARM32/ARM64 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 <daniel.lezcano@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> Acked-by: Rob Herring <robherring2@gmail.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2015-02-02 18:32:46 +03:00
depends on ARCH_CLPS711X && !ARM64 || COMPILE_TEST
ARM: clps711x: Add cpuidle driver Add cpuidle support for ARM Cirrus Logic CLPS711X CPUs. This CPU has an unique internal register and write to this location will put the system into the Idle State by halting the clock to the processor until an interrupt is generated. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2014-03-22 09:44:35 +04:00
help
Select this to enable cpuidle on Cirrus Logic CLPS711X SOCs.
cpuidle: Add Kconfig.arm and move calxeda, kirkwood and zynq Add Kconfig.arm for ARM cpuidle drivers and moves calxeda, kirkwood and zynq to Kconfig.arm. Like in the cpufreq menu, "CPU Idle" menu is added to drivers/cpuidle/Kconfig. Signed-off-by: Sahara <keun-o.park@windriver.com>
2013-07-03 12:49:55 +04:00
config ARM_HIGHBANK_CPUIDLE
bool "CPU Idle Driver for Calxeda processors"
ARM: cpuidle: Enable the ARM64 driver for both ARM32/ARM64 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 <daniel.lezcano@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> Acked-by: Rob Herring <robherring2@gmail.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2015-02-02 18:32:46 +03:00
depends on ARM_PSCI && !ARM64
cpuidle: Add Kconfig.arm and move calxeda, kirkwood and zynq Add Kconfig.arm for ARM cpuidle drivers and moves calxeda, kirkwood and zynq to Kconfig.arm. Like in the cpufreq menu, "CPU Idle" menu is added to drivers/cpuidle/Kconfig. Signed-off-by: Sahara <keun-o.park@windriver.com>
2013-07-03 12:49:55 +04:00
select ARM_CPU_SUSPEND
help
Select this to enable cpuidle on Calxeda processors.
config ARM_KIRKWOOD_CPUIDLE
bool "CPU Idle Driver for Marvell Kirkwood SoCs"
cpuidle: arm: Enable compile testing for some of drivers 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 <krzk@kernel.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-12-29 21:09:12 +03:00
depends on (MACH_KIRKWOOD || COMPILE_TEST) && !ARM64
cpuidle: Add Kconfig.arm and move calxeda, kirkwood and zynq Add Kconfig.arm for ARM cpuidle drivers and moves calxeda, kirkwood and zynq to Kconfig.arm. Like in the cpufreq menu, "CPU Idle" menu is added to drivers/cpuidle/Kconfig. Signed-off-by: Sahara <keun-o.park@windriver.com>
2013-07-03 12:49:55 +04:00
help
This adds the CPU Idle driver for Marvell Kirkwood SoCs.
config ARM_ZYNQ_CPUIDLE
bool "CPU Idle Driver for Xilinx Zynq processors"
cpuidle: arm: Enable compile testing for some of drivers 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 <krzk@kernel.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-12-29 21:09:12 +03:00
depends on (ARCH_ZYNQ || COMPILE_TEST) && !ARM64
cpuidle: Add Kconfig.arm and move calxeda, kirkwood and zynq Add Kconfig.arm for ARM cpuidle drivers and moves calxeda, kirkwood and zynq to Kconfig.arm. Like in the cpufreq menu, "CPU Idle" menu is added to drivers/cpuidle/Kconfig. Signed-off-by: Sahara <keun-o.park@windriver.com>
2013-07-03 12:49:55 +04:00
help
ARM: ux500: cpuidle: Move ux500 cpuidle driver to drivers/cpuidle There is no more dependency with arch/arm headers, so we can safely move the driver to the drivers/cpuidle directory. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-10 18:02:04 +04:00
Select this to enable cpuidle on Xilinx Zynq processors.
config ARM_U8500_CPUIDLE
bool "Cpu Idle Driver for the ST-E u8500 processors"
ARM: cpuidle: Enable the ARM64 driver for both ARM32/ARM64 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 <daniel.lezcano@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> Acked-by: Rob Herring <robherring2@gmail.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2015-02-02 18:32:46 +03:00
depends on ARCH_U8500 && !ARM64
ARM: ux500: cpuidle: Move ux500 cpuidle driver to drivers/cpuidle There is no more dependency with arch/arm headers, so we can safely move the driver to the drivers/cpuidle directory. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-10 18:02:04 +04:00
help
cpuidle: minor Kconfig help text fixes End sentences in help text with a period (aka full stop). Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-11-29 01:38:03 +03:00
Select this to enable cpuidle for ST-E u8500 processors.
ARM: ux500: cpuidle: Move ux500 cpuidle driver to drivers/cpuidle There is no more dependency with arch/arm headers, so we can safely move the driver to the drivers/cpuidle directory. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-10 18:02:04 +04:00
ARM: at91: cpuidle: Move driver to drivers/cpuidle As the cpuidle driver code has no more the dependency with the pm code, the 'standby' callback being passed as a parameter to the device's platform data, we can move the cpuidle driver in the drivers/cpuidle directory. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Conflicts: drivers/cpuidle/Kconfig.arm drivers/cpuidle/Makefile
2013-09-26 19:34:24 +04:00
config ARM_AT91_CPUIDLE
bool "Cpu Idle Driver for the AT91 processors"
default y
cpuidle: arm: Enable compile testing for some of drivers 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 <krzk@kernel.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-12-29 21:09:12 +03:00
depends on (ARCH_AT91 || COMPILE_TEST) && !ARM64
ARM: SoC drivers for v3.12 This branch contains ARM SoC related driver updates for v3.12. The only thing this cycle are core PM updates and CPUidle support for ARM's TC2 big.LITTLE development platform. Conflicts: One cleanup/reorg conflict with a new entry in drivers/cpuidle/Makefile. Append the new entry after the existing ones. A follow up patch for v3.12-rc will make the new entry conform to the cleanup/reorg. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJSLjatAAoJEFk3GJrT+8Zl32sP/Aw2iEXd/5DUvcp6y/qZoAjO oLhCPviEnQCpz4smFFySBLvvKyVyA7oOMet8nelIJhwHCTNMBpJZHIfcvpIP5uBY 6LLpFUw4m7TqOISwpVXlwc/3CuG76QCrITLJmButq6tHF4udHeAur+pAnNHoaoys O5arRMLvl5C4rREeiZctTv5JARICCxIcHpweQdtt+MZ03yG78fEfSB9XxvyOlhh0 OJnGcqU07fIXw9kT/9KAnR3Ql7JJsdzlXqLq6/wFWPe5a1KtgxHNXPbtWaxl8JWW cPSQci+n9iWgxKzoQTGyQO6sfkDHcol3izMeCScMwlx05SMPwofXpYitaPHLF1cy PtJosSMVQvJPrHyGlY4vhD9mtCIcyOmlwSlZ6dOf7oqXMhT9CPJe2UD/8JZWgXBi imY/vpU8mgZT315rQmc/Khg721VNKcSuIvP6xUS9PuaSMUrPSCJFbbkckHGnzdC7 XVFCui9gFxa7vMN+CzrZRqfZnjJ7ujuiFDauMzltu0iBiPNXkAfyoqbxMqUP1HJ5 pdU84vuEVjsUdWt9ivJs6I6cqIwroeji9HZzZnWkWyoDgtAjxhDFVXydqlhrZsuJ O3uErP8fjRtloFa2iLDZfawPpHDFsY4F+Nm09rZLO7RE4ELlYlQGfYEwuIh+kZ16 nLPE/V5DYrBVyNGDouKx =FvQD -----END PGP SIGNATURE----- Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver update from Kevin Hilman: "This contains the ARM SoC related driver updates for v3.12. The only thing this cycle are core PM updates and CPUidle support for ARM's TC2 big.LITTLE development platform" * tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: cpuidle: big.LITTLE: vexpress-TC2 CPU idle driver ARM: vexpress: tc2: disable GIC CPU IF in tc2_pm_suspend drivers: irq-chip: irq-gic: introduce gic_cpu_if_down()
2013-09-10 03:08:13 +04:00
help
cpuidle: minor Kconfig help text fixes End sentences in help text with a period (aka full stop). Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-11-29 01:38:03 +03:00
Select this to enable cpuidle for AT91 processors.
ARM: EXYNOS: Move the driver to drivers/cpuidle directory Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 01:57:35 +04:00
config ARM_EXYNOS_CPUIDLE
bool "Cpu Idle Driver for the Exynos processors"
cpuidle: arm: Enable compile testing for some of drivers 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 <krzk@kernel.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-12-29 21:09:12 +03:00
depends on (ARCH_EXYNOS || COMPILE_TEST) && !ARM64
cpuidle: exynos: add coupled cpuidle support for exynos4210 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 <ccross@google.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-01-24 08:05:50 +03:00
select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
ARM: EXYNOS: Move the driver to drivers/cpuidle directory Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 01:57:35 +04:00
help
cpuidle: minor Kconfig help text fixes End sentences in help text with a period (aka full stop). Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-11-29 01:38:03 +03:00
Select this to enable cpuidle for Exynos processors.
cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7 This driver will be able to manage the cpuidle for more SoCs than just Armada 370 and XP. It will also support Armada 38x and potentially other SoC of the Marvell Armada EBU family. To take this into account, this patch renames the driver and its symbols. It also changes the driver name from cpuidle-armada-370-xp to cpuidle-armada-xp, because separate platform drivers will be registered for the other SoC types. This change must be done simultaneously in the cpuidle driver and in the PMSU code in order to remain bisectable. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lkml.kernel.org/r/1406120453-29291-12-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-07-23 17:00:48 +04:00
config ARM_MVEBU_V7_CPUIDLE
bool "CPU Idle Driver for mvebu v7 family processors"
cpuidle: arm: Enable compile testing for some of drivers 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 <krzk@kernel.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-12-29 21:09:12 +03:00
depends on (ARCH_MVEBU || COMPILE_TEST) && !ARM64
cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7 This driver will be able to manage the cpuidle for more SoCs than just Armada 370 and XP. It will also support Armada 38x and potentially other SoC of the Marvell Armada EBU family. To take this into account, this patch renames the driver and its symbols. It also changes the driver name from cpuidle-armada-370-xp to cpuidle-armada-xp, because separate platform drivers will be registered for the other SoC types. This change must be done simultaneously in the cpuidle driver and in the PMSU code in order to remain bisectable. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lkml.kernel.org/r/1406120453-29291-12-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-07-23 17:00:48 +04:00
help
Select this to enable cpuidle on Armada 370, 38x and XP processors.
cpuidle: Refactor and move out NVIDIA Tegra20 driver into drivers/cpuidle 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 <pdeschrijver@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
2020-02-25 01:40:52 +03:00
config ARM_TEGRA_CPUIDLE
bool "CPU Idle Driver for NVIDIA Tegra SoCs"
cpuidle: tegra: Enable compile testing Enable compile testing of tegra-cpuidle driver. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-09-12 23:29:06 +03:00
depends on (ARCH_TEGRA || COMPILE_TEST) && !ARM64 && MMU
cpuidle: add ARCH_SUSPEND_POSSIBLE dependencies Some ARMv4 processors don't support suspend, which leads to a build failure with the tegra and qualcomm cpuidle driver: WARNING: unmet direct dependencies detected for ARM_CPU_SUSPEND Depends on [n]: ARCH_SUSPEND_POSSIBLE [=n] Selected by [y]: - ARM_TEGRA_CPUIDLE [=y] && CPU_IDLE [=y] && (ARM [=y] || ARM64) && (ARCH_TEGRA [=n] || COMPILE_TEST [=y]) && !ARM64 && MMU [=y] arch/arm/kernel/sleep.o: in function `__cpu_suspend': (.text+0x68): undefined reference to `cpu_sa110_suspend_size' (.text+0x68): undefined reference to `cpu_fa526_suspend_size' Add an explicit dependency to make randconfig builds avoid this combination. Fixes: faae6c9f2e68 ("cpuidle: tegra: Enable compile testing") Fixes: a871be6b8eee ("cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver") Link: https://lore.kernel.org/all/20211013160125.772873-1-arnd@kernel.org/ Cc: All applicable <stable@vger.kernel.org> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-02-06 22:33:06 +03:00
depends on ARCH_SUSPEND_POSSIBLE
cpuidle: Refactor and move out NVIDIA Tegra20 driver into drivers/cpuidle 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 <pdeschrijver@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
2020-02-25 01:40:52 +03:00
select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
select ARM_CPU_SUSPEND
help
Select this to enable cpuidle for NVIDIA Tegra20/30/114/124 SoCs.
cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver The Qualcomm SPM cpuidle driver seems to be the last driver still using the generic ARM CPUidle infrastructure. Converting it actually allows us to simplify the driver, and we end up being able to remove more lines than adding new ones: - We can parse the CPUidle states in the device tree directly with dt_idle_states (and don't need to duplicate that functionality into the spm driver). - Each "saw" device managed by the SPM driver now directly registers its own cpuidle driver, removing the need for any global (per cpu) state. The device tree binding is the same, so the driver stays compatible with all old device trees. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Lina Iyer <ilina@codeaurora.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-04-16 11:58:21 +03:00
config ARM_QCOM_SPM_CPUIDLE
bool "CPU Idle Driver for Qualcomm Subsystem Power Manager (SPM)"
cpuidle: Fix ARM_QCOM_SPM_CPUIDLE configuration When CONFIG_ARM_QCOM_SPM_CPUIDLE is y and CONFIG_MMU is not set, compiling errors are encountered as follows: drivers/cpuidle/cpuidle-qcom-spm.o: In function `spm_dev_probe': cpuidle-qcom-spm.c:(.text+0x140): undefined reference to `cpu_resume_arm' cpuidle-qcom-spm.c:(.text+0x148): undefined reference to `cpu_resume_arm' Note that cpu_resume_arm is defined when MMU is set. So, add dependency on MMU in ARM_QCOM_SPM_CPUIDLE configuration. Fixes: a871be6b8eee ("cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: He Ying <heying24@huawei.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20210406123328.92904-1-heying24@huawei.com
2021-04-06 15:33:28 +03:00
depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64 && MMU
cpuidle: add ARCH_SUSPEND_POSSIBLE dependencies Some ARMv4 processors don't support suspend, which leads to a build failure with the tegra and qualcomm cpuidle driver: WARNING: unmet direct dependencies detected for ARM_CPU_SUSPEND Depends on [n]: ARCH_SUSPEND_POSSIBLE [=n] Selected by [y]: - ARM_TEGRA_CPUIDLE [=y] && CPU_IDLE [=y] && (ARM [=y] || ARM64) && (ARCH_TEGRA [=n] || COMPILE_TEST [=y]) && !ARM64 && MMU [=y] arch/arm/kernel/sleep.o: in function `__cpu_suspend': (.text+0x68): undefined reference to `cpu_sa110_suspend_size' (.text+0x68): undefined reference to `cpu_fa526_suspend_size' Add an explicit dependency to make randconfig builds avoid this combination. Fixes: faae6c9f2e68 ("cpuidle: tegra: Enable compile testing") Fixes: a871be6b8eee ("cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver") Link: https://lore.kernel.org/all/20211013160125.772873-1-arnd@kernel.org/ Cc: All applicable <stable@vger.kernel.org> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-02-06 22:33:06 +03:00
depends on ARCH_SUSPEND_POSSIBLE
cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver The Qualcomm SPM cpuidle driver seems to be the last driver still using the generic ARM CPUidle infrastructure. Converting it actually allows us to simplify the driver, and we end up being able to remove more lines than adding new ones: - We can parse the CPUidle states in the device tree directly with dt_idle_states (and don't need to duplicate that functionality into the spm driver). - Each "saw" device managed by the SPM driver now directly registers its own cpuidle driver, removing the need for any global (per cpu) state. The device tree binding is the same, so the driver stays compatible with all old device trees. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Lina Iyer <ilina@codeaurora.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-04-16 11:58:21 +03:00
select ARM_CPU_SUSPEND
select CPU_IDLE_MULTIPLE_DRIVERS
select DT_IDLE_STATES
select QCOM_SCM
cpuidle: qcom_spm: Detach state machine from main SPM handling In commit a871be6b8eee ("cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver") the SPM driver has been converted to a generic CPUidle driver: that was mainly made to simplify the driver and that was a great accomplishment; Though, at that time, this driver was only applicable to ARM 32-bit SoCs, lacking logic about the handling of newer generation SAW. In preparation for the enablement of SPM features on AArch64/ARM64, split the cpuidle-qcom-spm driver in two: the CPUIdle related state machine (currently used only on ARM SoCs) stays there, while the SPM communication handling lands back in soc/qcom/spm.c and also making sure to not discard the simplifications that were introduced in the aforementioned commit. Since now the "two drivers" are split, the SCM dependency in the main SPM handling is gone and for this reason it was also possible to move the SPM initialization early: this will also make sure that whenever the SAW CPUIdle driver is getting initialized, the SPM driver will be ready to do the job. Please note that the anticipation of the SPM initialization was also done to optimize the boot times on platforms that have their CPU/L2 idle states managed by other means (such as PSCI), while needing SAW initialization for other purposes, like AVS control. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org> Reviewed-by: Stephan Gerhold <stephan@gerhold.net> Tested-by: Stephan Gerhold <stephan@gerhold.net> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20210729155609.608159-2-angelogioacchino.delregno@somainline.org
2021-07-29 18:56:05 +03:00
select QCOM_SPM
cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver The Qualcomm SPM cpuidle driver seems to be the last driver still using the generic ARM CPUidle infrastructure. Converting it actually allows us to simplify the driver, and we end up being able to remove more lines than adding new ones: - We can parse the CPUidle states in the device tree directly with dt_idle_states (and don't need to duplicate that functionality into the spm driver). - Each "saw" device managed by the SPM driver now directly registers its own cpuidle driver, removing the need for any global (per cpu) state. The device tree binding is the same, so the driver stays compatible with all old device trees. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Lina Iyer <ilina@codeaurora.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-04-16 11:58:21 +03:00
help
Select this to enable cpuidle for Qualcomm processors.
The Subsystem Power Manager (SPM) controls low power modes for the
CPU and L2 cores. It interface with various system drivers to put
the cores in low power modes.
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