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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (c) 2021, The Linux Foundation. All rights reserved.
- * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
- */
- #ifndef __QCOM_LPM_H__
- #define __QCOM_LPM_H__
- #define MAX_LPM_CPUS 8
- #define MAXSAMPLES 5
- #define PRED_TIMER_ADD 100
- #define PRED_PREMATURE_CNT 3
- #define PRED_REF_STDDEV 500
- #define CLUST_SMPL_INVLD_TIME 40000
- #define MAX_CLUSTER_STATES 4
- extern bool sleep_disabled;
- extern bool prediction_disabled;
- struct qcom_cluster_node {
- struct lpm_cluster *cluster;
- struct kobject *kobj;
- int state_idx;
- struct kobj_attribute disable_attr;
- struct attribute_group *attr_group;
- struct attribute **attrs;
- };
- struct history_lpm {
- int mode[MAXSAMPLES];
- uint32_t resi[MAXSAMPLES];
- int nsamp;
- uint32_t samples_idx;
- };
- struct history_ipi {
- uint32_t interval[MAXSAMPLES];
- uint32_t current_ptr;
- ktime_t cpu_idle_resched_ts;
- };
- struct lpm_cpu {
- int cpu;
- int enable;
- int last_idx;
- struct notifier_block nb;
- struct cpuidle_driver *drv;
- struct cpuidle_device *dev;
- ktime_t next_wakeup;
- uint64_t predicted;
- uint32_t history_invalid;
- bool predict_started;
- bool htmr_wkup;
- struct hrtimer histtimer;
- struct hrtimer biastimer;
- struct history_lpm lpm_history;
- struct history_ipi ipi_history;
- ktime_t now;
- uint64_t bias;
- int64_t next_pred_time;
- uint32_t pred_type;
- bool ipi_pending;
- spinlock_t lock;
- };
- struct cluster_history {
- uint64_t residency;
- int mode;
- uint64_t entry_time;
- };
- struct lpm_cluster {
- struct device *dev;
- uint32_t samples_idx;
- bool history_invalid;
- bool htmr_wkup;
- int entry_idx;
- int nsamp;
- struct cluster_history history[MAXSAMPLES];
- struct generic_pm_domain *genpd;
- struct qcom_cluster_node *dev_node[MAX_CLUSTER_STATES];
- struct kobject *dev_kobj;
- struct notifier_block genpd_nb;
- struct work_struct work;
- struct hrtimer histtimer;
- ktime_t entry_time;
- ktime_t next_wakeup;
- ktime_t pred_wakeup;
- ktime_t now;
- ktime_t cpu_next_wakeup[MAX_LPM_CPUS];
- bool state_allowed[MAX_CLUSTER_STATES];
- struct list_head list;
- spinlock_t lock;
- bool predicted;
- bool initialized;
- };
- struct cluster_governor {
- void (*select)(struct lpm_cpu *cpu_gov);
- void (*enable)(void);
- void (*disable)(void);
- void (*reflect)(void);
- };
- DECLARE_PER_CPU(struct lpm_cpu, lpm_cpu_data);
- int qcom_cluster_lpm_governor_init(void);
- void qcom_cluster_lpm_governor_deinit(void);
- void update_cluster_select(struct lpm_cpu *cpu_gov);
- void clear_cpu_predict_history(void);
- int create_global_sysfs_nodes(void);
- int create_cluster_sysfs_nodes(struct lpm_cluster *cluster_gov);
- void register_cluster_governor_ops(struct cluster_governor *ops);
- void remove_global_sysfs_nodes(void);
- void remove_cluster_sysfs_nodes(struct lpm_cluster *cluster_gov);
- #endif /* __QCOM_LPM_H__ */
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