126 lines
3.0 KiB
C
Executable File
126 lines
3.0 KiB
C
Executable File
/*
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* Copyright (c) 2016 Park Bumgyu, Samsung Electronics Co., Ltd <bumgyu.park@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Exynos ACME(A Cpufreq that Meets Every chipset) driver implementation
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*/
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#include <linux/pm_qos.h>
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#include <soc/samsung/exynos-dm.h>
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#include "exynos-ufc.h"
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struct exynos_cpufreq_dm {
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struct list_head list;
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struct exynos_dm_constraint c;
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};
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struct exynos_ufc {
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struct list_head list;
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struct exynos_ufc_info info;
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};
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typedef int (*target_fn)(struct cpufreq_policy *policy,
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unsigned int target_freq,
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unsigned int relation);
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struct exynos_cpufreq_ready_block {
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struct list_head list;
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/* callback function to update policy-dependant data */
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int (*update)(struct cpufreq_policy *policy);
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int (*get_target)(struct cpufreq_policy *policy, target_fn target);
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};
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struct exynos_cpufreq_domain {
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/* list of domain */
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struct list_head list;
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/* lock */
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struct mutex lock;
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/* dt node */
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struct device_node *dn;
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/* domain identity */
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unsigned int id;
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struct cpumask cpus;
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unsigned int cal_id;
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int dm_type;
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/* frequency scaling */
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bool enabled;
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unsigned int table_size;
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struct cpufreq_frequency_table *freq_table;
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unsigned int max_freq;
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unsigned int min_freq;
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unsigned int boot_freq;
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unsigned int resume_freq;
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unsigned int old;
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/* PM QoS class */
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unsigned int pm_qos_min_class;
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unsigned int pm_qos_max_class;
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struct pm_qos_request min_qos_req;
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struct pm_qos_request max_qos_req;
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struct pm_qos_request user_min_qos_req;
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struct pm_qos_request user_max_qos_req;
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struct pm_qos_request user_min_qos_wo_boost_req;
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struct notifier_block pm_qos_min_notifier;
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struct notifier_block pm_qos_max_notifier;
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/* for sysfs */
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int user_boost;
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unsigned int user_default_qos;
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/* freq boost */
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bool boost_supported;
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unsigned int *boost_max_freqs;
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struct cpumask online_cpus;
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/* list head of DVFS Manager constraints */
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struct list_head dm_list;
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/* list head of User cpuFreq Ctrl (UFC) */
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struct list_head ufc_list;
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bool need_awake;
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struct thermal_cooling_device *cdev;
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};
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/*
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* list head of cpufreq domain
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*/
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extern struct exynos_cpufreq_domain
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*find_domain_cpumask(const struct cpumask *mask);
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extern struct list_head *get_domain_list(void);
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extern struct exynos_cpufreq_domain *first_domain(void);
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extern struct exynos_cpufreq_domain *last_domain(void);
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extern int exynos_cpufreq_domain_count(void);
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/*
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* the time it takes on this CPU to switch between
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* two frequencies in nanoseconds
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*/
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#define TRANSITION_LATENCY 5000000
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/*
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* Exynos CPUFreq API
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*/
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extern void exynos_cpufreq_ready_list_add(struct exynos_cpufreq_ready_block *rb);
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extern unsigned int exynos_pstate_get_boost_freq(int cpu);
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#ifdef CONFIG_ARM_EXYNOS_UFC
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extern int ufc_domain_init(struct exynos_cpufreq_domain *domain);
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#else
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static inline int ufc_domain_init(struct exynos_cpufreq_domain *domain)
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{
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return 0;
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}
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#endif
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