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/*
* Copyright (C) 2019-2020 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "level_zero/tools/source/sysman/standby/linux/os_standby_imp.h"
namespace L0 {
const std::string LinuxStandbyImp::standbyModeFile("power/rc6_enable");
ze_result_t LinuxStandbyImp::osStandbyGetProperties(zes_standby_properties_t &properties) {
properties.pNext = nullptr;
properties.type = ZES_STANDBY_TYPE_GLOBAL;
properties.onSubdevice = isSubdevice;
properties.subdeviceId = subdeviceId;
return ZE_RESULT_SUCCESS;
}
bool LinuxStandbyImp::isStandbySupported(void) {
if (ZE_RESULT_SUCCESS == pSysfsAccess->canRead(standbyModeFile)) {
return true;
} else {
return false;
}
}
ze_result_t LinuxStandbyImp::getMode(zes_standby_promo_mode_t &mode) {
int currentMode = -1;
ze_result_t result = pSysfsAccess->read(standbyModeFile, currentMode);
if (ZE_RESULT_SUCCESS != result) {
if (result == ZE_RESULT_ERROR_NOT_AVAILABLE) {
result = ZE_RESULT_ERROR_UNSUPPORTED_FEATURE;
}
return result;
}
if (standbyModeDefault == currentMode) {
mode = ZES_STANDBY_PROMO_MODE_DEFAULT;
} else if (standbyModeNever == currentMode) {
mode = ZES_STANDBY_PROMO_MODE_NEVER;
} else {
result = ZE_RESULT_ERROR_UNKNOWN;
}
return result;
}
ze_result_t LinuxStandbyImp::setMode(zes_standby_promo_mode_t mode) {
// standbyModeFile is not writable.
// Mode cannot be set from L0.
// To set the mode, user must reload
// the i915 module and set module parameter
// enable_rc6 appropriately.
return ZE_RESULT_ERROR_UNSUPPORTED_FEATURE;
}
LinuxStandbyImp::LinuxStandbyImp(OsSysman *pOsSysman, ze_bool_t onSubdevice, uint32_t subdeviceId) : isSubdevice(onSubdevice), subdeviceId(subdeviceId) {
LinuxSysmanImp *pLinuxSysmanImp = static_cast<LinuxSysmanImp *>(pOsSysman);
pSysfsAccess = &pLinuxSysmanImp->getSysfsAccess();
}
OsStandby *OsStandby::create(OsSysman *pOsSysman, ze_bool_t onSubdevice, uint32_t subdeviceId) {
LinuxStandbyImp *pLinuxStandbyImp = new LinuxStandbyImp(pOsSysman, onSubdevice, subdeviceId);
return static_cast<OsStandby *>(pLinuxStandbyImp);
}
} // namespace L0
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