mirror of
https://github.com/libretro/RetroArch.git
synced 2024-05-20 13:27:22 -04:00
109 lines
3.7 KiB
C
109 lines
3.7 KiB
C
/* RetroArch - A frontend for libretro.
|
|
* Copyright (C) 2021 - David Guillen Fandos
|
|
*
|
|
* RetroArch is free software: you can redistribute it and/or modify it under the terms
|
|
* of the GNU General Public License as published by the Free Software Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
|
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with RetroArch.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef _MISC_CPUFREQ_H
|
|
#define _MISC_CPUFREQ_H
|
|
|
|
#include <stdint.h>
|
|
|
|
RETRO_BEGIN_DECLS
|
|
|
|
#define MAX_GOV_STRLEN 32
|
|
|
|
/* Events from Frontend to the driver to drive policies */
|
|
enum cpu_scaling_event
|
|
{
|
|
CPUSCALING_EVENT_FOCUS_CORE,
|
|
CPUSCALING_EVENT_FOCUS_MENU,
|
|
CPUSCALING_EVENT_FOCUS_SCREENSAVER
|
|
};
|
|
|
|
/* Scaling mode selected by the user */
|
|
enum cpu_scaling_mode
|
|
{
|
|
CPUSCALING_MANAGED_PERFORMANCE = 0, /* Performance while running core */
|
|
CPUSCALING_MANAGED_PER_CONTEXT, /* Policies for core, menu, etc. */
|
|
CPUSCALING_MAX_PERFORMANCE, /* Performance (Max Freq) */
|
|
CPUSCALING_MIN_POWER, /* Use Powersave governor */
|
|
CPUSCALING_BALANCED, /* Uses schedutil/ondemand */
|
|
CPUSCALING_MANUAL /* Can manually tweak stuff */
|
|
};
|
|
|
|
typedef struct cpu_scaling_opts
|
|
{
|
|
/* Max/Min frequencies */
|
|
uint32_t min_freq, max_freq;
|
|
/* Options for CPUSCALING_POLICY_PER_CONTEXT */
|
|
char main_policy[MAX_GOV_STRLEN];
|
|
char menu_policy[MAX_GOV_STRLEN];
|
|
} cpu_scaling_opts_t;
|
|
|
|
typedef struct cpu_scaling_driver
|
|
{
|
|
/* Policy number in the sysfs tree */
|
|
unsigned int policy_id;
|
|
/* Which CPUs this scaling driver will affect */
|
|
char *affected_cpus;
|
|
/* Governor and available governors */
|
|
char *scaling_governor;
|
|
struct string_list *available_governors;
|
|
/* Current frequency (value might be slightly old) */
|
|
uint32_t current_frequency;
|
|
/* Max and min frequencies, for the hardware and policy */
|
|
uint32_t min_cpu_freq, max_cpu_freq;
|
|
uint32_t min_policy_freq, max_policy_freq;
|
|
/* Available frequencies table (can be NULL), ends with zero */
|
|
uint32_t *available_freqs;
|
|
} cpu_scaling_driver_t;
|
|
|
|
/* Safely free all memory used by the driver */
|
|
void cpu_scaling_driver_free(void);
|
|
|
|
/* Signal the initialization */
|
|
void cpu_scaling_driver_init(void);
|
|
|
|
/* Get a list of the available cpu scaling drivers */
|
|
cpu_scaling_driver_t **get_cpu_scaling_drivers(bool can_update);
|
|
|
|
/* Set max and min policy cpu frequency */
|
|
bool set_cpu_scaling_min_frequency(
|
|
cpu_scaling_driver_t *driver, uint32_t min_freq);
|
|
bool set_cpu_scaling_max_frequency(
|
|
cpu_scaling_driver_t *driver, uint32_t max_freq);
|
|
|
|
/* Calculate next/previous frequencies */
|
|
uint32_t get_cpu_scaling_next_frequency(cpu_scaling_driver_t *driver,
|
|
uint32_t freq, int step);
|
|
uint32_t get_cpu_scaling_next_frequency_limit(uint32_t freq, int step);
|
|
|
|
/* Set the scaling governor for this scaling driver */
|
|
bool set_cpu_scaling_governor(cpu_scaling_driver_t *driver,
|
|
const char* governor);
|
|
|
|
/* Signal certain events that are of interest of this driver */
|
|
void set_cpu_scaling_signal(enum cpu_scaling_event);
|
|
|
|
/* Set the base cpufreq policy mode */
|
|
void set_cpu_scaling_mode(enum cpu_scaling_mode mode,
|
|
const cpu_scaling_opts_t *opts);
|
|
|
|
/* Get the base cpufreq policy mode */
|
|
enum cpu_scaling_mode get_cpu_scaling_mode(cpu_scaling_opts_t *opts);
|
|
|
|
RETRO_END_DECLS
|
|
|
|
#endif
|
|
|