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apex.h
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apex.h
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Apex kernel-userspace interface definitions.
*
* Copyright (C) 2018 Google, Inc.
*/
#ifndef __APEX_H__
#define __APEX_H__
#include <linux/ioctl.h>
/* Clock Gating ioctl. */
struct apex_gate_clock_ioctl {
/* Enter or leave clock gated state. */
u64 enable;
/* If set, enter clock gating state, regardless of custom block's
* internal idle state
*/
u64 force_idle;
};
/* Performance expectation ioctl. */
enum apex_performance_expectation {
APEX_PERFORMANCE_LOW = 0,
APEX_PERFORMANCE_MED = 1,
APEX_PERFORMANCE_HIGH = 2,
APEX_PERFORMANCE_MAX = 3,
};
struct apex_performance_expectation_ioctl {
/* Expected performance from apex. */
uint32_t performance;
};
/* Base number for all Apex-common IOCTLs */
#define APEX_IOCTL_BASE 0x7F
/* Enable/Disable clock gating. */
#define APEX_IOCTL_GATE_CLOCK \
_IOW(APEX_IOCTL_BASE, 0, struct apex_gate_clock_ioctl)
#define APEX_IOCTL_PERFORMANCE_EXPECTATION _IOW(APEX_IOCTL_BASE, 1, struct apex_performance_expectation_ioctl)
#endif /* __APEX_H__ */