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added CPU speed api and minarch frontend option

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This commit is contained in:
Shaun Inman 2023-01-30 23:08:04 -05:00
parent d9af2b88d0
commit a6847e7ab4
6 changed files with 90 additions and 26 deletions
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25
src/common/api.c
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@ -1099,26 +1099,33 @@ void POW_powerOff(void) {
}
#define BACKLIGHT_PATH "/sys/class/backlight/backlight.2/bl_power"
#define GOVERNOR_PATH "/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"
static char governor[128];
#define CPU_SPEED_SET_PATH "/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed"
#define CPU_SPEED_GET_PATH "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq"
static int previous_speed = CPU_SPEED_NORMAL;
void POW_setCPUSpeed(int speed) {
putInt(CPU_SPEED_SET_PATH, speed);
sync();
}
static void POW_enterSleep(void) {
SetRawVolume(0);
putInt(BACKLIGHT_PATH, FB_BLANK_POWERDOWN);
// save current governor (either ondemand or performance)
getFile(GOVERNOR_PATH, governor, 128);
trimTrailingNewlines(governor);
putFile(GOVERNOR_PATH, "powersave");
// TODO: not sure this is necessary
// previous_speed = getInt(CPU_SPEED_GET_PATH);
// POW_setCPUSpeed(CPU_SPEED_MENU);
sync();
}
static void POW_exitSleep(void) {
putInt(BACKLIGHT_PATH, FB_BLANK_UNBLANK);
SetVolume(GetVolume());
// restore previous governor
putFile(GOVERNOR_PATH, governor);
// TODO: not sure this is necessary
// POW_setCPUSpeed(previous_speed);
sync();
}
static void POW_waitForWake(void) {