Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
46 lines
897 B
C
46 lines
897 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Low-level idle sequences
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*/
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#include <linux/cpu.h>
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#include <linux/irqflags.h>
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#include <asm/barrier.h>
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#include <asm/cpuidle.h>
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#include <asm/cpufeature.h>
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#include <asm/sysreg.h>
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/*
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* cpu_do_idle()
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*
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* Idle the processor (wait for interrupt).
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*
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* If the CPU supports priority masking we must do additional work to
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* ensure that interrupts are not masked at the PMR (because the core will
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* not wake up if we block the wake up signal in the interrupt controller).
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*/
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void __cpuidle cpu_do_idle(void)
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{
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struct arm_cpuidle_irq_context context;
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arm_cpuidle_save_irq_context(&context);
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dsb(sy);
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wfi();
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arm_cpuidle_restore_irq_context(&context);
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}
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/*
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* This is our default idle handler.
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*/
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void __cpuidle arch_cpu_idle(void)
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{
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/*
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* This should do all the clock switching and wait for interrupt
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* tricks
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*/
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cpu_do_idle();
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}
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