/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define ATRACE_TAG (ATRACE_TAG_POWER | ATRACE_TAG_HAL)
#define LOG_TAG "android.hardware.power@1.2-service.wahoo-libperfmgr"
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <android-base/strings.h>
#include <android-base/stringprintf.h>
#include <mutex>
#include <utils/Log.h>
#include <utils/Trace.h>
#include "Power.h"
#include "power-helper.h"
/* RPM runs at 19.2Mhz. Divide by 19200 for msec */
#define RPM_CLK 19200
extern struct stat_pair rpm_stat_map[];
namespace android {
namespace hardware {
namespace power {
namespace V1_2 {
namespace implementation {
using ::android::hardware::power::V1_0::Feature;
using ::android::hardware::power::V1_0::PowerStatePlatformSleepState;
using ::android::hardware::power::V1_0::Status;
using ::android::hardware::power::V1_1::PowerStateSubsystem;
using ::android::hardware::power::V1_1::PowerStateSubsystemSleepState;
using ::android::hardware::hidl_vec;
using ::android::hardware::Return;
using ::android::hardware::Void;
Power::Power() :
mHintManager(HintManager::GetFromJSON("/vendor/etc/powerhint.json")),
mInteractionHandler(mHintManager),
mVRModeOn(false),
mSustainedPerfModeOn(false),
mEncoderModeOn(false) {
mInteractionHandler.Init();
std::string state = android::base::GetProperty(kPowerHalStateProp, "");
if (state == "VIDEO_ENCODE") {
ALOGI("Initialize with VIDEO_ENCODE on");
mHintManager->DoHint("VIDEO_ENCODE");
mEncoderModeOn = true;
} else if (state == "SUSTAINED_PERFORMANCE") {
ALOGI("Initialize with SUSTAINED_PERFORMANCE on");
mHintManager->DoHint("SUSTAINED_PERFORMANCE");
mSustainedPerfModeOn = true;
} else if (state == "VR_MODE") {
ALOGI("Initialize with VR_MODE on");
mHintManager->DoHint("VR_MODE");
mVRModeOn = true;
} else if (state == "VR_SUSTAINED_PERFORMANCE") {
ALOGI("Initialize with SUSTAINED_PERFORMANCE and VR_MODE on");
mHintManager->DoHint("VR_SUSTAINED_PERFORMANCE");
mSustainedPerfModeOn = true;
mVRModeOn = true;
} else {
ALOGI("Initialize PowerHAL");
}
state = android::base::GetProperty(kPowerHalAudioProp, "");
if (state == "LOW_LATENCY") {
ALOGI("Initialize with AUDIO_LOW_LATENCY on");
mHintManager->DoHint("AUDIO_LOW_LATENCY");
}
}
// Methods from ::android::hardware::power::V1_0::IPower follow.
Return<void> Power::setInteractive(bool /* interactive */) {
return Void();
}
Return<void> Power::powerHint(PowerHint_1_0 hint, int32_t data) {
if (!isSupportedGovernor()) {
return Void();
}
switch(hint) {
case PowerHint_1_0::INTERACTION:
if (mVRModeOn || mSustainedPerfModeOn) {
ALOGV("%s: ignoring due to other active perf hints", __func__);
} else {
mInteractionHandler.Acquire(data);
}
break;
case PowerHint_1_0::VIDEO_ENCODE:
if (mVRModeOn || mSustainedPerfModeOn) {
ALOGV("%s: ignoring due to other active perf hints", __func__);
break;
}
ATRACE_BEGIN("video_encode");
if (mVRModeOn || mSustainedPerfModeOn) {
ALOGV("%s: ignoring due to other active perf hints", __func__);
} else {
if (data) {
// Hint until canceled
ATRACE_INT("video_encode_lock", 1);
mHintManager->DoHint("VIDEO_ENCODE");
ALOGD("VIDEO_ENCODE ON");
if (!android::base::SetProperty(kPowerHalStateProp, "VIDEO_ENCODE")) {
ALOGE("%s: could not set powerHAL state property to VIDEO_ENCODE", __func__);
}
mEncoderModeOn = true;
} else {
ATRACE_INT("video_encode_lock", 0);
mHintManager->EndHint("VIDEO_ENCODE");
ALOGD("VIDEO_ENCODE OFF");
if (!android::base::SetProperty(kPowerHalStateProp, "")) {
ALOGE("%s: could not clear powerHAL state property", __func__);
}
mEncoderModeOn = false;
}
}
ATRACE_END();
break;
case PowerHint_1_0::SUSTAINED_PERFORMANCE:
if (data && !mSustainedPerfModeOn) {
ALOGD("SUSTAINED_PERFORMANCE ON");
if (!mVRModeOn) { // Sustained mode only.
mHintManager->DoHint("SUSTAINED_PERFORMANCE");
if (!android::base::SetProperty(kPowerHalStateProp, "SUSTAINED_PERFORMANCE")) {
ALOGE("%s: could not set powerHAL state property to SUSTAINED_PERFORMANCE", __func__);
}
} else { // Sustained + VR mode.
mHintManager->EndHint("VR_MODE");
mHintManager->DoHint("VR_SUSTAINED_PERFORMANCE");
if (!android::base::SetProperty(kPowerHalStateProp, "VR_SUSTAINED_PERFORMANCE")) {
ALOGE("%s: could not set powerHAL state property to VR_SUSTAINED_PERFORMANCE", __func__);
}
}
mSustainedPerfModeOn = true;
} else if (!data && mSustainedPerfModeOn) {
ALOGD("SUSTAINED_PERFORMANCE OFF");
mHintManager->EndHint("VR_SUSTAINED_PERFORMANCE");
mHintManager->EndHint("SUSTAINED_PERFORMANCE");
if (mVRModeOn) { // Switch back to VR Mode.
mHintManager->DoHint("VR_MODE");
if (!android::base::SetProperty(kPowerHalStateProp, "VR_MODE")) {
ALOGE("%s: could not set powerHAL state property to VR_MODE", __func__);
}
} else {
if (!android::base::SetProperty(kPowerHalStateProp, "")) {
ALOGE("%s: could not clear powerHAL state property", __func__);
}
}
mSustainedPerfModeOn = false;
}
break;
case PowerHint_1_0::VR_MODE:
if (data && !mVRModeOn) {
ALOGD("VR_MODE ON");
if (!mSustainedPerfModeOn) { // VR mode only.
mHintManager->DoHint("VR_MODE");
if (!android::base::SetProperty(kPowerHalStateProp, "VR_MODE")) {
ALOGE("%s: could not set powerHAL state property to VR_MODE", __func__);
}
} else { // Sustained + VR mode.
mHintManager->EndHint("SUSTAINED_PERFORMANCE");
mHintManager->DoHint("VR_SUSTAINED_PERFORMANCE");
if (!android::base::SetProperty(kPowerHalStateProp, "VR_SUSTAINED_PERFORMANCE")) {
ALOGE("%s: could not set powerHAL state property to VR_SUSTAINED_PERFORMANCE", __func__);
}
}
mVRModeOn = true;
} else if (!data && mVRModeOn) {
ALOGD("VR_MODE OFF");
mHintManager->EndHint("VR_SUSTAINED_PERFORMANCE");
mHintManager->EndHint("VR_MODE");
if (mSustainedPerfModeOn) { // Switch back to sustained Mode.
mHintManager->DoHint("SUSTAINED_PERFORMANCE");
if (!android::base::SetProperty(kPowerHalStateProp, "SUSTAINED_PERFORMANCE")) {
ALOGE("%s: could not set powerHAL state property to SUSTAINED_PERFORMANCE", __func__);
}
} else {
if (!android::base::SetProperty(kPowerHalStateProp, "")) {
ALOGE("%s: could not clear powerHAL state property", __func__);
}
}
mVRModeOn = false;
}
break;
case PowerHint_1_0::LAUNCH:
ATRACE_BEGIN("launch");
if (mVRModeOn || mSustainedPerfModeOn) {
ALOGV("%s: ignoring due to other active perf hints", __func__);
} else {
if (data) {
// Hint until canceled
ATRACE_INT("launch_lock", 1);
mHintManager->DoHint("LAUNCH");
ALOGD("LAUNCH ON");
} else {
ATRACE_INT("launch_lock", 0);
mHintManager->EndHint("LAUNCH");
ALOGD("LAUNCH OFF");
}
}
ATRACE_END();
break;
default:
break;
}
return Void();
}
Return<void> Power::setFeature(Feature /*feature*/, bool /*activate*/) {
//Nothing to do
return Void();
}
Return<void> Power::getPlatformLowPowerStats(getPlatformLowPowerStats_cb _hidl_cb) {
hidl_vec<PowerStatePlatformSleepState> states;
uint64_t stats[MAX_PLATFORM_STATS * MAX_RPM_PARAMS] = {0};
uint64_t *values;
struct PowerStatePlatformSleepState *state;
int ret;
states.resize(PLATFORM_SLEEP_MODES_COUNT);
ret = extract_platform_stats(stats);
if (ret != 0) {
states.resize(0);
goto done;
}
/* Update statistics for XO_shutdown */
state = &states[RPM_MODE_XO];
state->name = "XO_shutdown";
values = stats + (RPM_MODE_XO * MAX_RPM_PARAMS);
state->residencyInMsecSinceBoot = values[1];
state->totalTransitions = values[0];
state->supportedOnlyInSuspend = false;
state->voters.resize(XO_VOTERS);
for(size_t i = 0; i < XO_VOTERS; i++) {
int voter = static_cast<int>(i + XO_VOTERS_START);
state->voters[i].name = rpm_stat_map[voter].label;
values = stats + (voter * MAX_RPM_PARAMS);
state->voters[i].totalTimeInMsecVotedForSinceBoot = values[0] / RPM_CLK;
state->voters[i].totalNumberOfTimesVotedSinceBoot = values[1];
}
/* Update statistics for VMIN state */
state = &states[RPM_MODE_VMIN];
state->name = "VMIN";
values = stats + (RPM_MODE_VMIN * MAX_RPM_PARAMS);
state->residencyInMsecSinceBoot = values[1];
state->totalTransitions = values[0];
state->supportedOnlyInSuspend = false;
state->voters.resize(VMIN_VOTERS);
//Note: No filling of state voters since VMIN_VOTERS = 0
done:
_hidl_cb(states, Status::SUCCESS);
return Void();
}
static int get_wlan_low_power_stats(struct PowerStateSubsystem *subsystem) {
uint64_t stats[WLAN_POWER_PARAMS_COUNT] = {0};
struct PowerStateSubsystemSleepState *state;
subsystem->name = "wlan";
if (extract_wlan_stats(stats) != 0) {
subsystem->states.resize(0);
return -1;
}
subsystem->states.resize(WLAN_STATES_COUNT);
/* Update statistics for Active State */
state = &subsystem->states[WLAN_STATE_ACTIVE];
state->name = "Active";
state->residencyInMsecSinceBoot = stats[CUMULATIVE_TOTAL_ON_TIME_MS];
state->totalTransitions = stats[DEEP_SLEEP_ENTER_COUNTER];
state->lastEntryTimestampMs = 0; //FIXME need a new value from Qcom
state->supportedOnlyInSuspend = false;
/* Update statistics for Deep-Sleep state */
state = &subsystem->states[WLAN_STATE_DEEP_SLEEP];
state->name = "Deep-Sleep";
state->residencyInMsecSinceBoot = stats[CUMULATIVE_SLEEP_TIME_MS];
state->totalTransitions = stats[DEEP_SLEEP_ENTER_COUNTER];
state->lastEntryTimestampMs = stats[LAST_DEEP_SLEEP_ENTER_TSTAMP_MS];
state->supportedOnlyInSuspend = false;
return 0;
}
enum easel_state {
EASEL_OFF = 0,
EASEL_ON,
EASEL_SUSPENDED,
NUM_EASEL_STATES
};
// Get low power stats for easel subsystem
static int get_easel_low_power_stats(struct PowerStateSubsystem *subsystem) {
// This implementation is a workaround to provide minimal visibility into
// Easel state behavior until canonical low power stats are supported.
// It takes an "external observer" snapshot of the current Easel state every
// time it is called, and synthesizes an artificial sleep state that will
// behave similarly to real stats if Easel gets "wedged" in the "on" state.
static std::mutex statsLock;
static uint64_t totalOnSnapshotCount = 0;
static uint64_t totalNotOnSnapshotCount = 0;
unsigned long currentState;
struct PowerStateSubsystemSleepState *state;
subsystem->name = "Easel";
if (get_easel_state(¤tState) != 0) {
subsystem->states.resize(0);
return -1;
}
if (currentState >= NUM_EASEL_STATES) {
ALOGE("%s: unrecognized Easel state(%lu)", __func__, currentState);
return -1;
}
subsystem->states.resize(1);
// Since we are storing stats locally but can have multiple parallel
// callers, locking is required to ensure stats are not corrupted.
std::lock_guard<std::mutex> lk(statsLock);
// Update statistics for synthetic sleep state. We combine OFF and
// SUSPENDED to act as a composite "not on" state so the numbers will behave
// like a real sleep state.
if ((currentState == EASEL_OFF) || (currentState == EASEL_SUSPENDED)) {
totalNotOnSnapshotCount++;
} else {
totalOnSnapshotCount++;
}
// Update statistics for synthetic sleep state, where
// totalTransitions = cumulative count of Easel state0 (as seen by PowerHAL)
// residencyInMsecsSinceBoot = cumulative count of Easel state1 (as seen by
// PowerHAL)
// lastEntryTimestampMs = cumulative count of Easel state2 (as seen by
// PowerHAL)
state = &subsystem->states[0];
state->name = "SyntheticSleep";
state->totalTransitions = totalOnSnapshotCount;
state->residencyInMsecSinceBoot = totalNotOnSnapshotCount;
state->lastEntryTimestampMs = 0; // No added value for the workaround
state->supportedOnlyInSuspend = false;
return 0;
}
// Methods from ::android::hardware::power::V1_1::IPower follow.
Return<void> Power::getSubsystemLowPowerStats(getSubsystemLowPowerStats_cb _hidl_cb) {
hidl_vec<PowerStateSubsystem> subsystems;
subsystems.resize(SUBSYSTEM_COUNT);
// Get WLAN subsystem low power stats.
if (get_wlan_low_power_stats(&subsystems[SUBSYSTEM_WLAN]) != 0) {
ALOGE("%s: failed to process wlan stats", __func__);
}
// Get Easel subsystem low power stats.
if (get_easel_low_power_stats(&subsystems[SUBSYSTEM_EASEL]) != 0) {
ALOGE("%s: failed to process Easel stats", __func__);
}
_hidl_cb(subsystems, Status::SUCCESS);
return Void();
}
bool Power::isSupportedGovernor() {
std::string buf;
if (android::base::ReadFileToString("/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor", &buf)) {
buf = android::base::Trim(buf);
}
// Only support EAS 1.2, legacy EAS
if (buf == "schedutil" || buf == "sched") {
return true;
} else {
LOG(ERROR) << "Governor not supported by powerHAL, skipping";
return false;
}
}
Return<void> Power::powerHintAsync(PowerHint_1_0 hint, int32_t data) {
// just call the normal power hint in this oneway function
return powerHint(hint, data);
}
// Methods from ::android::hardware::power::V1_2::IPower follow.
Return<void> Power::powerHintAsync_1_2(PowerHint_1_2 hint, int32_t data) {
if (!isSupportedGovernor()) {
return Void();
}
switch(hint) {
case PowerHint_1_2::AUDIO_LOW_LATENCY:
ATRACE_BEGIN("audio_low_latency");
if (data) {
// Hint until canceled
ATRACE_INT("audio_low_latency_lock", 1);
mHintManager->DoHint("AUDIO_LOW_LATENCY");
ALOGD("AUDIO LOW LATENCY ON");
if (!android::base::SetProperty(kPowerHalAudioProp, "LOW_LATENCY")) {
ALOGE("%s: could not set powerHAL audio state property to LOW_LATENCY", __func__);
}
} else {
ATRACE_INT("audio_low_latency_lock", 0);
mHintManager->EndHint("AUDIO_LOW_LATENCY");
ALOGD("AUDIO LOW LATENCY OFF");
if (!android::base::SetProperty(kPowerHalAudioProp, "")) {
ALOGE("%s: could not clear powerHAL audio state property", __func__);
}
}
ATRACE_END();
break;
case PowerHint_1_2::AUDIO_STREAMING:
ATRACE_BEGIN("audio_streaming");
if (data) {
// Hint until canceled
ATRACE_INT("audio_streaming_lock", 1);
mHintManager->DoHint("AUDIO_STREAMING");
ALOGD("AUDIO STREAMING ON");
} else {
ATRACE_INT("audio_streaming_lock", 0);
mHintManager->EndHint("AUDIO_STREAMING");
ALOGD("AUDIO STREAMING OFF");
}
ATRACE_END();
break;
case PowerHint_1_2::CAMERA_LAUNCH:
ATRACE_BEGIN("camera_launch");
if (data > 0) {
ATRACE_INT("camera_launch_lock", 1);
mHintManager->DoHint("CAMERA_LAUNCH", std::chrono::milliseconds(data));
ALOGD("CAMERA LAUNCH ON: %d MS, LAUNCH ON: 2500 MS", data);
// boosts 2.5s for launching
mHintManager->DoHint("LAUNCH", std::chrono::milliseconds(2500));
} else if (data == 0) {
ATRACE_INT("camera_launch_lock", 0);
mHintManager->EndHint("CAMERA_LAUNCH");
ALOGD("CAMERA LAUNCH OFF");
} else {
ALOGE("CAMERA LAUNCH INVALID DATA: %d", data);
}
ATRACE_END();
break;
case PowerHint_1_2::CAMERA_STREAMING:
ATRACE_BEGIN("camera_streaming");
if (data > 0) {
ATRACE_INT("camera_streaming_lock", 1);
mHintManager->DoHint("CAMERA_STREAMING", std::chrono::milliseconds(data));
ALOGD("CAMERA STREAMING ON: %d MS", data);
} else if (data == 0) {
ATRACE_INT("camera_streaming_lock", 0);
mHintManager->EndHint("CAMERA_STREAMING");
ALOGD("CAMERA STREAMING OFF");
} else {
ALOGE("CAMERA STREAMING INVALID DATA: %d", data);
}
ATRACE_END();
break;
case PowerHint_1_2::CAMERA_SHOT:
ATRACE_BEGIN("camera_shot");
if (data > 0) {
ATRACE_INT("camera_shot_lock", 1);
mHintManager->DoHint("CAMERA_SHOT", std::chrono::milliseconds(data));
ALOGD("CAMERA SHOT ON: %d MS", data);
} else if (data == 0) {
ATRACE_INT("camera_shot_lock", 0);
mHintManager->EndHint("CAMERA_SHOT");
ALOGD("CAMERA SHOT OFF");
} else {
ALOGE("CAMERA SHOT INVALID DATA: %d", data);
}
ATRACE_END();
break;
default:
return powerHint(static_cast<PowerHint_1_0>(hint), data);
}
return Void();
}
constexpr const char* boolToString(bool b) {
return b ? "true" : "false";
}
Return<void> Power::debug(const hidl_handle& handle, const hidl_vec<hidl_string>&) {
if (handle != nullptr && handle->numFds >= 1) {
int fd = handle->data[0];
std::string buf(android::base::StringPrintf("HintManager Running: %s\n"
"VRMode: %s\n"
"SustainedPerformanceMode: %s\n"
"VideoEncodeMode: %s\n",
boolToString(mHintManager->IsRunning()),
boolToString(mVRModeOn),
boolToString(mSustainedPerfModeOn),
boolToString(mEncoderModeOn)));
// Dump nodes through libperfmgr
mHintManager->DumpToFd(fd);
if (!android::base::WriteStringToFd(buf, fd)) {
PLOG(ERROR) << "Failed to dump state to fd";
}
fsync(fd);
}
return Void();
}
} // namespace implementation
} // namespace V1_2
} // namespace power
} // namespace hardware
} // namespace android