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