59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_ARM_CPUIDLE_H
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#define __ASM_ARM_CPUIDLE_H
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#include <asm/proc-fns.h>
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#ifdef CONFIG_CPU_IDLE
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extern int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
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struct cpuidle_driver *drv, int index);
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#define __cpuidle_method_section __used __section("__cpuidle_method_of_table")
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#else
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static inline int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
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struct cpuidle_driver *drv, int index) { return -ENODEV; }
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#define __cpuidle_method_section __maybe_unused /* drop silently */
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#endif
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/* Common ARM WFI state */
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#define ARM_CPUIDLE_WFI_STATE_PWR(p) {\
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.enter = arm_cpuidle_simple_enter,\
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.exit_latency = 1,\
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.target_residency = 1,\
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.power_usage = p,\
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.name = "WFI",\
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.desc = "ARM WFI",\
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}
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/*
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* in case power_specified == 1, give a default WFI power value needed
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* by some governors
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*/
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#define ARM_CPUIDLE_WFI_STATE ARM_CPUIDLE_WFI_STATE_PWR(UINT_MAX)
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struct device_node;
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struct cpuidle_ops {
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int (*suspend)(unsigned long arg);
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int (*init)(struct device_node *, int cpu);
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};
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struct of_cpuidle_method {
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const char *method;
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const struct cpuidle_ops *ops;
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};
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#define CPUIDLE_METHOD_OF_DECLARE(name, _method, _ops) \
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static const struct of_cpuidle_method __cpuidle_method_of_table_##name \
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__cpuidle_method_section = { .method = _method, .ops = _ops }
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extern int arm_cpuidle_suspend(int index);
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extern int arm_cpuidle_init(int cpu);
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struct arm_cpuidle_irq_context { };
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#define arm_cpuidle_save_irq_context(c) (void)c
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#define arm_cpuidle_restore_irq_context(c) (void)c
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#endif
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