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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Header file for CPUFreq ondemand governor and related code.
*
* Copyright (C) 2016, Intel Corporation
* Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
*/
#include "cpufreq_governor.h"
struct od_policy_dbs_info {
struct policy_dbs_info policy_dbs;
unsigned int freq_lo;
unsigned int freq_lo_delay_us;
unsigned int freq_hi_delay_us;
unsigned int sample_type:1;
};
static inline struct od_policy_dbs_info *to_dbs_info(struct policy_dbs_info *policy_dbs)
{
return container_of(policy_dbs, struct od_policy_dbs_info, policy_dbs);
}
struct od_dbs_tuners {
unsigned int powersave_bias;
};
#ifdef CONFIG_X86
#include <asm/cpu_device_id.h>
/*
* Not all CPUs want IO time to be accounted as busy; this depends on
* how efficient idling at a higher frequency/voltage is.
*
* Pavel Machek says this is not so for various generations of AMD and
* old Intel systems. Mike Chan (android.com) claims this is also not
* true for ARM.
*
* Because of this, select a known series of Intel CPUs (Family 6 and
* later) by default, and leave all others up to the user.
*/
static inline bool od_should_io_be_busy(void)
{
return (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
boot_cpu_data.x86_vfm >= INTEL_PENTIUM_PRO);
}
#else
static inline bool od_should_io_be_busy(void) { return false; }
#endif
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