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151 lines
5.1 KiB
151 lines
5.1 KiB
/* Copyright (c) 2010-2019, The Linux Foundation. All rights reserved.
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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 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __KGSL_PWRSCALE_H
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#define __KGSL_PWRSCALE_H
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#include <linux/devfreq.h>
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#include <linux/msm_adreno_devfreq.h>
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#include "kgsl_pwrctrl.h"
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/* devfreq governor call window in usec */
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#define KGSL_GOVERNOR_CALL_INTERVAL 10000
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/* Power events to be tracked with history */
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#define KGSL_PWREVENT_STATE 0
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#define KGSL_PWREVENT_GPU_FREQ 1
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#define KGSL_PWREVENT_BUS_FREQ 2
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#define KGSL_PWREVENT_MAX 3
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/**
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* Amount of time running at a level to be considered
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* "stable" in msec
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*/
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#define STABLE_TIME 150
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struct kgsl_power_stats {
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u64 busy_time;
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u64 ram_time;
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u64 ram_wait;
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};
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struct kgsl_pwr_event {
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unsigned int data;
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ktime_t start;
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s64 duration;
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};
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struct kgsl_pwr_history {
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struct kgsl_pwr_event *events;
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unsigned int type;
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unsigned int index;
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unsigned int size;
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};
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/**
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* struct kgsl_pwrscale - Power scaling settings for a KGSL device
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* @devfreqptr - Pointer to the devfreq device
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* @bus_devfreq - Pointer to the bus devfreq device
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* @gpu_profile - GPU profile data for the devfreq device
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* @bus_profile - Bus specific data for the bus devfreq device
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* @freq_table - GPU frequencies for the DCVS algorithm
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* @last_governor - Prior devfreq governor
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* @accum_stats - Accumulated statistics for various frequency calculations
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* @enabled - Whether or not power scaling is enabled
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* @time - Last submitted sample timestamp
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* @on_time - Timestamp when gpu busy begins
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* @freq_change_time - Timestamp of last freq change
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* @devfreq_wq - Main devfreq workqueue
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* @devfreq_suspend_ws - Pass device suspension to devfreq
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* @devfreq_resume_ws - Pass device resume to devfreq
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* @devfreq_notify_ws - Notify devfreq to update sampling
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* @next_governor_call - Timestamp after which the governor may be notified of
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* a new sample
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* @history - History of power events with timestamps and durations
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* @cooling_dev - Thermal cooling device handle
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* @ctxt_aware_enable - Whether or not ctxt aware DCVS feature is enabled
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* @ctxt_aware_busy_penalty - The time in microseconds required to trigger
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* ctxt aware power level jump
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* @ctxt_aware_target_pwrlevel - pwrlevel to jump on in case of ctxt aware
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* power level jump
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*/
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struct kgsl_pwrscale {
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struct devfreq *devfreqptr;
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struct devfreq *bus_devfreq;
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struct msm_adreno_extended_profile gpu_profile;
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struct msm_busmon_extended_profile bus_profile;
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unsigned long freq_table[KGSL_MAX_PWRLEVELS];
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char last_governor[DEVFREQ_NAME_LEN];
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struct kgsl_power_stats accum_stats;
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bool enabled;
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ktime_t time;
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s64 on_time;
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s64 freq_change_time;
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struct workqueue_struct *devfreq_wq;
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struct work_struct devfreq_suspend_ws;
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struct work_struct devfreq_resume_ws;
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struct work_struct devfreq_notify_ws;
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ktime_t next_governor_call;
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struct kgsl_pwr_history history[KGSL_PWREVENT_MAX];
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struct thermal_cooling_device *cooling_dev;
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bool ctxt_aware_enable;
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unsigned int ctxt_aware_target_pwrlevel;
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unsigned int ctxt_aware_busy_penalty;
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};
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int kgsl_pwrscale_init(struct device *dev, const char *governor);
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void kgsl_pwrscale_close(struct kgsl_device *device);
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void kgsl_pwrscale_update(struct kgsl_device *device);
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void kgsl_pwrscale_update_stats(struct kgsl_device *device);
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void kgsl_pwrscale_busy(struct kgsl_device *device);
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void kgsl_pwrscale_sleep(struct kgsl_device *device);
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void kgsl_pwrscale_wake(struct kgsl_device *device);
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void kgsl_pwrscale_midframe_timer_restart(struct kgsl_device *device);
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void kgsl_pwrscale_midframe_timer_cancel(struct kgsl_device *device);
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void kgsl_pwrscale_enable(struct kgsl_device *device);
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void kgsl_pwrscale_disable(struct kgsl_device *device, bool turbo);
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int kgsl_devfreq_target(struct device *dev, unsigned long *freq, u32 flags);
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int kgsl_devfreq_get_dev_status(struct device *dev,
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struct devfreq_dev_status *stat);
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int kgsl_devfreq_get_cur_freq(struct device *dev, unsigned long *freq);
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int kgsl_busmon_target(struct device *dev, unsigned long *freq, u32 flags);
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int kgsl_busmon_get_dev_status(struct device *dev,
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struct devfreq_dev_status *stat);
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int kgsl_busmon_get_cur_freq(struct device *dev, unsigned long *freq);
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#define KGSL_PWRSCALE_INIT(_priv_data) { \
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.enabled = true, \
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.gpu_profile = { \
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.private_data = _priv_data, \
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.profile = { \
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.target = kgsl_devfreq_target, \
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.get_dev_status = kgsl_devfreq_get_dev_status, \
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.get_cur_freq = kgsl_devfreq_get_cur_freq, \
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} }, \
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.bus_profile = { \
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.private_data = _priv_data, \
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.profile = { \
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.target = kgsl_busmon_target, \
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.get_dev_status = kgsl_busmon_get_dev_status, \
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.get_cur_freq = kgsl_busmon_get_cur_freq, \
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} }, \
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.history[KGSL_PWREVENT_STATE].size = 20, \
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.history[KGSL_PWREVENT_GPU_FREQ].size = 3, \
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.history[KGSL_PWREVENT_BUS_FREQ].size = 5, \
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}
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#endif
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