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device_samsung_sm7125-common
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sm7125: Update usb impl and drop hardware samsung dependency

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tirimbino
Ruchit Marathe 2 years ago
parent 67dd23b199
commit ae3427232a
8 changed files with 985 additions and 1 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 35
      aidl/usb/Android.bp
  2. 801
      aidl/usb/Usb.cpp
  3. 87
      aidl/usb/Usb.h
  4. 15
      aidl/usb/android.hardware.usb-service.exynos9810.rc
  5. 10
      aidl/usb/android.hardware.usb-service.exynos9810.xml
  6. 35
      aidl/usb/service.cpp
  7. 2
      common.mk
  8. 1
      sepolicy/vendor/file_contexts

35
aidl/usb/Android.bp
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//
// Copyright (C) 2021 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.
//
cc_binary {
name: "android.hardware.usb-service.exynos9810",
relative_install_path: "hw",
init_rc: ["android.hardware.usb-service.exynos9810.rc"],
vintf_fragments: ["android.hardware.usb-service.exynos9810.xml"],
vendor: true,
srcs: [
"service.cpp",
"Usb.cpp",
],
shared_libs: [
"android.hardware.usb-V1-ndk",
"libbase",
"libbinder_ndk",
"libcutils",
"liblog",
"libutils",
],
}

801
aidl/usb/Usb.cpp
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/*
* Copyright (C) 2021 The Android Open Source Project
* Copyright (C) 2022 The LineageOS 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 LOG_TAG "android.hardware.usb.aidl-service"
#include <aidl/android/hardware/usb/PortRole.h>
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <android-base/strings.h>
#include <assert.h>
#include <dirent.h>
#include <pthread.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <chrono>
#include <regex>
#include <thread>
#include <unordered_map>
#include <cutils/uevent.h>
#include <sys/epoll.h>
#include <utils/Errors.h>
#include <utils/StrongPointer.h>
#include "Usb.h"
using android::base::GetProperty;
using android::base::Trim;
namespace aidl {
namespace android {
namespace hardware {
namespace usb {
constexpr char kTypecPath[] = "/sys/class/typec/";
constexpr char kDataRoleNode[] = "/data_role";
constexpr char kPowerRoleNode[] = "/power_role";
// Set by the signal handler to destroy the thread
volatile bool destroyThread;
int32_t readFile(const std::string &filename, std::string *contents) {
FILE *fp;
ssize_t read = 0;
char *line = NULL;
size_t len = 0;
fp = fopen(filename.c_str(), "r");
if (fp != NULL) {
if ((read = getline(&line, &len, fp)) != -1) {
char *pos;
if ((pos = strchr(line, '\n')) != NULL)
*pos = '\0';
*contents = line;
}
free(line);
fclose(fp);
return 0;
} else {
ALOGE("fopen failed");
}
return -1;
}
void queryVersionHelper(android::hardware::usb::Usb *usb,
std::vector<PortStatus> *currentPortStatus);
ScopedAStatus Usb::enableUsbData(const string& in_portName, bool in_enable, int64_t in_transactionId) {
std::vector<PortStatus> currentPortStatus;
bool result = true;
pthread_mutex_lock(&mLock);
if (!WriteStringToFile(in_enable ? "1" : "0", USB_DATA_PATH)) {
ALOGE("Not able to turn %s usb connection notification", in_enable ? "on" : "off");
result = false;
}
if (mCallback != NULL) {
ScopedAStatus ret = mCallback->notifyEnableUsbDataStatus(
in_portName, true, result ? Status::SUCCESS : Status::ERROR, in_transactionId);
if (!ret.isOk())
ALOGE("notifyEnableUsbDataStatus error %s", ret.getDescription().c_str());
} else {
ALOGE("Not notifying the userspace. Callback is not set");
}
pthread_mutex_unlock(&mLock);
queryVersionHelper(this, &currentPortStatus);
return ScopedAStatus::ok();
}
ScopedAStatus Usb::enableUsbDataWhileDocked(const string& in_portName, int64_t in_transactionId) {
pthread_mutex_lock(&mLock);
if (mCallback != NULL) {
ScopedAStatus ret = mCallback->notifyEnableUsbDataWhileDockedStatus(
in_portName, Status::NOT_SUPPORTED, in_transactionId);
if (!ret.isOk())
ALOGE("notifyEnableUsbDataWhileDockedStatus error %s", ret.getDescription().c_str());
} else {
ALOGE("Not notifying the userspace. Callback is not set");
}
pthread_mutex_unlock(&mLock);
return ScopedAStatus::ok();
}
ScopedAStatus Usb::resetUsbPort(const string& in_portName, int64_t in_transactionId) {
pthread_mutex_lock(&mLock);
if (mCallback != NULL) {
ScopedAStatus ret = mCallback->notifyResetUsbPortStatus(
in_portName, Status::NOT_SUPPORTED, in_transactionId);
if (!ret.isOk())
ALOGE("notifyResetUsbPortStatus error %s", ret.getDescription().c_str());
} else {
ALOGE("Not notifying the userspace. Callback is not set");
}
pthread_mutex_unlock(&mLock);
return ScopedAStatus::ok();
}
Status queryMoistureDetectionStatus(android::hardware::usb::Usb *usb,
std::vector<PortStatus> *currentPortStatus) {
string enabled, status, path, DetectedPath;
for (int i = 0; i < currentPortStatus->size(); i++) {
(*currentPortStatus)[i].supportedContaminantProtectionModes
.push_back(ContaminantProtectionMode::NONE);
(*currentPortStatus)[i].contaminantProtectionStatus
= ContaminantProtectionStatus::NONE;
(*currentPortStatus)[i].contaminantDetectionStatus
= ContaminantDetectionStatus::DISABLED;
(*currentPortStatus)[i].supportsEnableContaminantPresenceDetection = true;
(*currentPortStatus)[i].supportsEnableContaminantPresenceProtection = false;
if (usb->mMoistureDetectionEnabled) {
if (readFile(CONTAMINANT_DETECTION_PATH, &status)) {
ALOGE("Failed to open %s", CONTAMINANT_DETECTION_PATH);
return Status::ERROR;
}
if (status == "1") {
(*currentPortStatus)[i].contaminantDetectionStatus =
ContaminantDetectionStatus::DETECTED;
(*currentPortStatus)[i].contaminantProtectionStatus =
ContaminantProtectionStatus::FORCE_SINK;
} else
(*currentPortStatus)[i].contaminantDetectionStatus =
ContaminantDetectionStatus::NOT_DETECTED;
}
ALOGI("ContaminantDetectionStatus[%d]:%hhd ContaminantProtectionStatus[%d]:%hhd",
i, (*currentPortStatus)[i].contaminantDetectionStatus,
i, (*currentPortStatus)[i].contaminantProtectionStatus);
}
return Status::SUCCESS;
}
string appendRoleNodeHelper(const string &portName, PortRole::Tag tag) {
string node(kTypecPath + portName);
switch (tag) {
case PortRole::dataRole:
return node + kDataRoleNode;
case PortRole::powerRole:
return node + kPowerRoleNode;
case PortRole::mode:
return node + "/port_type";
default:
return "";
}
}
string convertRoletoString(PortRole role) {
if (role.getTag() == PortRole::powerRole) {
if (role.get<PortRole::powerRole>() == PortPowerRole::SOURCE)
return "source";
else if (role.get<PortRole::powerRole>() == PortPowerRole::SINK)
return "sink";
} else if (role.getTag() == PortRole::dataRole) {
if (role.get<PortRole::dataRole>() == PortDataRole::HOST)
return "host";
if (role.get<PortRole::dataRole>() == PortDataRole::DEVICE)
return "device";
} else if (role.getTag() == PortRole::mode) {
if (role.get<PortRole::mode>() == PortMode::UFP)
return "sink";
if (role.get<PortRole::mode>() == PortMode::DFP)
return "source";
}
return "none";
}
void extractRole(string *roleName) {
std::size_t first, last;
first = roleName->find("[");
last = roleName->find("]");
if (first != string::npos && last != string::npos) {
*roleName = roleName->substr(first + 1, last - first - 1);
}
}
void switchToDrp(const string &portName) {
string filename = appendRoleNodeHelper(string(portName.c_str()), PortRole::mode);
FILE *fp;
if (filename != "") {
fp = fopen(filename.c_str(), "w");
if (fp != NULL) {
int ret = fputs("dual", fp);
fclose(fp);
if (ret == EOF)
ALOGE("Fatal: Error while switching back to drp");
} else {
ALOGE("Fatal: Cannot open file to switch back to drp");
}
} else {
ALOGE("Fatal: invalid node type");
}
}
bool switchMode(const string &portName, const PortRole &in_role, struct Usb *usb) {
string filename = appendRoleNodeHelper(string(portName.c_str()), in_role.getTag());
string written;
FILE *fp;
bool roleSwitch = false;
if (filename == "") {
ALOGE("Fatal: invalid node type");
return false;
}
fp = fopen(filename.c_str(), "w");
if (fp != NULL) {
// Hold the lock here to prevent loosing connected signals
// as once the file is written the partner added signal
// can arrive anytime.
pthread_mutex_lock(&usb->mPartnerLock);
usb->mPartnerUp = false;
int ret = fputs(convertRoletoString(in_role).c_str(), fp);
fclose(fp);
if (ret != EOF) {
struct timespec to;
struct timespec now;
wait_again:
clock_gettime(CLOCK_MONOTONIC, &now);
to.tv_sec = now.tv_sec + PORT_TYPE_TIMEOUT;
to.tv_nsec = now.tv_nsec;
int err = pthread_cond_timedwait(&usb->mPartnerCV, &usb->mPartnerLock, &to);
// There are no uevent signals which implies role swap timed out.
if (err == ETIMEDOUT) {
ALOGI("uevents wait timedout");
// Validity check.
} else if (!usb->mPartnerUp) {
goto wait_again;
// Role switch succeeded since usb->mPartnerUp is true.
} else {
roleSwitch = true;
}
} else {
ALOGI("Role switch failed while wrting to file");
}
pthread_mutex_unlock(&usb->mPartnerLock);
}
if (!roleSwitch)
switchToDrp(string(portName.c_str()));
return roleSwitch;
}
Usb::Usb()
: mLock(PTHREAD_MUTEX_INITIALIZER),
mRoleSwitchLock(PTHREAD_MUTEX_INITIALIZER),
mPartnerLock(PTHREAD_MUTEX_INITIALIZER),
mPartnerUp(false),
mMoistureDetectionEnabled(false)
{
pthread_condattr_t attr;
if (pthread_condattr_init(&attr)) {
ALOGE("pthread_condattr_init failed: %s", strerror(errno));
abort();
}
if (pthread_condattr_setclock(&attr, CLOCK_MONOTONIC)) {
ALOGE("pthread_condattr_setclock failed: %s", strerror(errno));
abort();
}
if (pthread_cond_init(&mPartnerCV, &attr)) {
ALOGE("pthread_cond_init failed: %s", strerror(errno));
abort();
}
if (pthread_condattr_destroy(&attr)) {
ALOGE("pthread_condattr_destroy failed: %s", strerror(errno));
abort();
}
}
ScopedAStatus Usb::switchRole(const string& in_portName,
const PortRole& in_role, int64_t in_transactionId) {
string filename = appendRoleNodeHelper(string(in_portName.c_str()), in_role.getTag());
string written;
FILE *fp;
bool roleSwitch = false;
if (filename == "") {
ALOGE("Fatal: invalid node type");
return ScopedAStatus::ok();
}
pthread_mutex_lock(&mRoleSwitchLock);
ALOGI("filename write: %s role:%s", filename.c_str(), convertRoletoString(in_role).c_str());
if (in_role.getTag() == PortRole::mode) {
roleSwitch = switchMode(in_portName, in_role, this);
} else {
fp = fopen(filename.c_str(), "w");
if (fp != NULL) {
int ret = fputs(convertRoletoString(in_role).c_str(), fp);
fclose(fp);
if ((ret != EOF) && ReadFileToString(filename, &written)) {
written = Trim(written);
extractRole(&written);
ALOGI("written: %s", written.c_str());
if (written == convertRoletoString(in_role)) {
roleSwitch = true;
} else {
ALOGE("Role switch failed");
}
} else {
ALOGE("failed to update the new role");
}
} else {
ALOGE("fopen failed");
}
}
pthread_mutex_lock(&mLock);
if (mCallback != NULL) {
ScopedAStatus ret = mCallback->notifyRoleSwitchStatus(
in_portName, in_role, roleSwitch ? Status::SUCCESS : Status::ERROR, in_transactionId);
if (!ret.isOk())
ALOGE("RoleSwitchStatus error %s", ret.getDescription().c_str());
} else {
ALOGE("Not notifying the userspace. Callback is not set");
}
pthread_mutex_unlock(&mLock);
pthread_mutex_unlock(&mRoleSwitchLock);
return ScopedAStatus::ok();
}
ScopedAStatus Usb::limitPowerTransfer(const string& in_portName, bool /*in_limit*/,
int64_t in_transactionId) {
std::vector<PortStatus> currentPortStatus;
pthread_mutex_lock(&mLock);
if (mCallback != NULL && in_transactionId >= 0) {
ScopedAStatus ret = mCallback->notifyLimitPowerTransferStatus(
in_portName, false, Status::NOT_SUPPORTED, in_transactionId);
if (!ret.isOk())
ALOGE("limitPowerTransfer error %s", ret.getDescription().c_str());
} else {
ALOGE("Not notifying the userspace. Callback is not set");
}
pthread_mutex_unlock(&mLock);
return ScopedAStatus::ok();
}
Status getAccessoryConnected(const string &portName, string *accessory) {
string filename = kTypecPath + portName + "-partner/accessory_mode";
if (!ReadFileToString(filename, accessory)) {
ALOGE("getAccessoryConnected: Failed to open filesystem node: %s", filename.c_str());
return Status::ERROR;
}
*accessory = Trim(*accessory);
return Status::SUCCESS;
}
Status getCurrentRoleHelper(const string &portName, bool connected, PortRole *currentRole) {
string filename;
string roleName;
string accessory;
// Mode
if (currentRole->getTag() == PortRole::powerRole) {
filename = kTypecPath + portName + kPowerRoleNode;
currentRole->set<PortRole::powerRole>(PortPowerRole::NONE);
} else if (currentRole->getTag() == PortRole::dataRole) {
filename = kTypecPath + portName + kDataRoleNode;
currentRole->set<PortRole::dataRole>(PortDataRole::NONE);
} else if (currentRole->getTag() == PortRole::mode) {
filename = kTypecPath + portName + kDataRoleNode;
currentRole->set<PortRole::mode>(PortMode::NONE);
} else {
return Status::ERROR;
}
if (!connected)
return Status::SUCCESS;
if (currentRole->getTag() == PortRole::mode) {
if (getAccessoryConnected(portName, &accessory) != Status::SUCCESS) {
return Status::ERROR;
}
if (accessory == "analog_audio") {
currentRole->set<PortRole::mode>(PortMode::AUDIO_ACCESSORY);
return Status::SUCCESS;
} else if (accessory == "debug") {
currentRole->set<PortRole::mode>(PortMode::DEBUG_ACCESSORY);
return Status::SUCCESS;
}
}
if (!ReadFileToString(filename, &roleName)) {
ALOGE("getCurrentRole: Failed to open filesystem node: %s", filename.c_str());
return Status::ERROR;
}
roleName = Trim(roleName);
extractRole(&roleName);
if (roleName == "source") {
currentRole->set<PortRole::powerRole>(PortPowerRole::SOURCE);
} else if (roleName == "sink") {
currentRole->set<PortRole::powerRole>(PortPowerRole::SINK);
} else if (roleName == "host") {
if (currentRole->getTag() == PortRole::dataRole)
currentRole->set<PortRole::dataRole>(PortDataRole::HOST);
else
currentRole->set<PortRole::mode>(PortMode::DFP);
} else if (roleName == "device") {
if (currentRole->getTag() == PortRole::dataRole)
currentRole->set<PortRole::dataRole>(PortDataRole::DEVICE);
else
currentRole->set<PortRole::mode>(PortMode::UFP);
} else if (roleName != "none") {
/* case for none has already been addressed.
* so we check if the role isn't none.
*/
return Status::UNRECOGNIZED_ROLE;
}
return Status::SUCCESS;
}
Status getTypeCPortNamesHelper(std::unordered_map<string, bool> *names) {
DIR *dp;
dp = opendir(kTypecPath);
if (dp != NULL) {
struct dirent *ep;
while ((ep = readdir(dp))) {
if (ep->d_type == DT_LNK) {
if (string::npos == string(ep->d_name).find("-partner")) {
std::unordered_map<string, bool>::const_iterator portName =
names->find(ep->d_name);
if (portName == names->end()) {
names->insert({ep->d_name, false});
}
} else {
(*names)[std::strtok(ep->d_name, "-")] = true;
}
}
}
closedir(dp);
return Status::SUCCESS;
}
ALOGE("Failed to open /sys/class/typec");
return Status::ERROR;
}
bool canSwitchRoleHelper(const string &portName) {
string filename = kTypecPath + portName + "-partner/supports_usb_power_delivery";
string supportsPD;
if (ReadFileToString(filename, &supportsPD)) {
supportsPD = Trim(supportsPD);
if (supportsPD == "yes") {
return true;
}
}
return false;
}
Status getPortStatusHelper(std::vector<PortStatus> *currentPortStatus) {
std::unordered_map<string, bool> names;
Status result = getTypeCPortNamesHelper(&names);
int i = -1;
if (result == Status::SUCCESS) {
currentPortStatus->resize(names.size());
for (std::pair<string, bool> port : names) {
i++;
ALOGI("%s", port.first.c_str());
(*currentPortStatus)[i].portName = port.first;
PortRole currentRole;
currentRole.set<PortRole::powerRole>(PortPowerRole::NONE);
if (getCurrentRoleHelper(port.first, port.second, &currentRole) == Status::SUCCESS){
(*currentPortStatus)[i].currentPowerRole = currentRole.get<PortRole::powerRole>();
} else {
ALOGE("Error while retrieving portNames");
goto done;
}
currentRole.set<PortRole::dataRole>(PortDataRole::NONE);
if (getCurrentRoleHelper(port.first, port.second, &currentRole) == Status::SUCCESS) {
(*currentPortStatus)[i].currentDataRole = currentRole.get<PortRole::dataRole>();
} else {
ALOGE("Error while retrieving current port role");
goto done;
}
currentRole.set<PortRole::mode>(PortMode::NONE);
if (getCurrentRoleHelper(port.first, port.second, &currentRole) == Status::SUCCESS) {
(*currentPortStatus)[i].currentMode = currentRole.get<PortRole::mode>();
} else {
ALOGE("Error while retrieving current data role");
goto done;
}
(*currentPortStatus)[i].canChangeMode = true;
(*currentPortStatus)[i].canChangeDataRole =
port.second ? canSwitchRoleHelper(port.first) : false;
(*currentPortStatus)[i].canChangePowerRole =
port.second ? canSwitchRoleHelper(port.first) : false;
(*currentPortStatus)[i].supportedModes.push_back(PortMode::DRP);
(*currentPortStatus)[i].usbDataStatus.push_back(UsbDataStatus::ENABLED);
ALOGI("%d:%s connected:%d canChangeMode:%d canChagedata:%d canChangePower:%d "
"usbDataEnabled:%d",
i, port.first.c_str(), port.second,
(*currentPortStatus)[i].canChangeMode,
(*currentPortStatus)[i].canChangeDataRole,
(*currentPortStatus)[i].canChangePowerRole, 0);
}
return Status::SUCCESS;
}
done:
return Status::ERROR;
}
void queryVersionHelper(android::hardware::usb::Usb *usb,
std::vector<PortStatus> *currentPortStatus) {
Status status;
pthread_mutex_lock(&usb->mLock);
status = getPortStatusHelper(currentPortStatus);
queryMoistureDetectionStatus(usb, currentPortStatus);
if (usb->mCallback != NULL) {
ScopedAStatus ret = usb->mCallback->notifyPortStatusChange(*currentPortStatus,
status);
if (!ret.isOk())
ALOGE("queryPortStatus error %s", ret.getDescription().c_str());
} else {
ALOGI("Notifying userspace skipped. Callback is NULL");
}
pthread_mutex_unlock(&usb->mLock);
}
ScopedAStatus Usb::queryPortStatus(int64_t in_transactionId) {
std::vector<PortStatus> currentPortStatus;
queryVersionHelper(this, &currentPortStatus);
pthread_mutex_lock(&mLock);
if (mCallback != NULL) {
ScopedAStatus ret = mCallback->notifyQueryPortStatus(
"all", Status::SUCCESS, in_transactionId);
if (!ret.isOk())
ALOGE("notifyQueryPortStatus error %s", ret.getDescription().c_str());
} else {
ALOGE("Not notifying the userspace. Callback is not set");
}
pthread_mutex_unlock(&mLock);
return ScopedAStatus::ok();
}
ScopedAStatus Usb::enableContaminantPresenceDetection(const string& in_portName,
bool in_enable, int64_t in_transactionId) {
std::vector<PortStatus> currentPortStatus;
std::string disable = GetProperty(DISABLE_CONTAMINANT_DETECTION, "");
if (disable != "true")
mMoistureDetectionEnabled = in_enable;
pthread_mutex_lock(&mLock);
if (mCallback != NULL) {
ScopedAStatus ret = mCallback->notifyContaminantEnabledStatus(
in_portName, false, Status::SUCCESS, in_transactionId);
if (!ret.isOk())
ALOGE("enableContaminantPresenceDetection error %s", ret.getDescription().c_str());
} else {
ALOGE("Not notifying the userspace. Callback is not set");
}
pthread_mutex_unlock(&mLock);
queryVersionHelper(this, &currentPortStatus);
return ScopedAStatus::ok();
}
struct data {
int uevent_fd;
::aidl::android::hardware::usb::Usb *usb;
};
static void uevent_event(uint32_t /*epevents*/, struct data *payload) {
char msg[UEVENT_MSG_LEN + 2];
char *cp;
int n;
n = uevent_kernel_multicast_recv(payload->uevent_fd, msg, UEVENT_MSG_LEN);
if (n <= 0)
return;
if (n >= UEVENT_MSG_LEN) /* overflow -- discard */
return;
msg[n] = '\0';
msg[n + 1] = '\0';
cp = msg;
while (*cp) {
if (std::regex_match(cp, std::regex("(add)(.*)(-partner)"))) {
ALOGI("partner added");
pthread_mutex_lock(&payload->usb->mPartnerLock);
payload->usb->mPartnerUp = true;
pthread_cond_signal(&payload->usb->mPartnerCV);
pthread_mutex_unlock(&payload->usb->mPartnerLock);
} else if (!strncmp(cp, "DEVTYPE=typec_", strlen("DEVTYPE=typec_")) ||
!strncmp(cp, "CCIC=WATER", strlen("CCIC=WATER")) ||
!strncmp(cp, "CCIC=DRY", strlen("CCIC=DRY"))) {
std::vector<PortStatus> currentPortStatus;
queryVersionHelper(payload->usb, &currentPortStatus);
// Role switch is not in progress and port is in disconnected state
if (!pthread_mutex_trylock(&payload->usb->mRoleSwitchLock)) {
for (unsigned long i = 0; i < currentPortStatus.size(); i++) {
DIR *dp =
opendir(string(kTypecPath +
string(currentPortStatus[i].portName.c_str()) +
"-partner").c_str());
if (dp == NULL) {
switchToDrp(currentPortStatus[i].portName);
} else {
closedir(dp);
}
}
pthread_mutex_unlock(&payload->usb->mRoleSwitchLock);
}
break;
} /* advance to after the next \0 */
while (*cp++) {
}
}
}
void *work(void *param) {
int epoll_fd, uevent_fd;
struct epoll_event ev;
int nevents = 0;
struct data payload;
uevent_fd = uevent_open_socket(UEVENT_MAX_EVENTS * UEVENT_MSG_LEN, true);
if (uevent_fd < 0) {
ALOGE("uevent_init: uevent_open_socket failed\n");
return NULL;
}
payload.uevent_fd = uevent_fd;
payload.usb = (::aidl::android::hardware::usb::Usb *)param;
fcntl(uevent_fd, F_SETFL, O_NONBLOCK);
ev.events = EPOLLIN;
ev.data.ptr = (void *)uevent_event;
epoll_fd = epoll_create(UEVENT_MAX_EVENTS);
if (epoll_fd == -1) {
ALOGE("epoll_create failed; errno=%d", errno);
goto error;
}
if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, uevent_fd, &ev) == -1) {
ALOGE("epoll_ctl failed; errno=%d", errno);
goto error;
}
while (!destroyThread) {
struct epoll_event events[UEVENT_MAX_EVENTS];
nevents = epoll_wait(epoll_fd, events, UEVENT_MAX_EVENTS, -1);
if (nevents == -1) {
if (errno == EINTR)
continue;
ALOGE("usb epoll_wait failed; errno=%d", errno);
break;
}
for (int n = 0; n < nevents; ++n) {
if (events[n].data.ptr)
(*(void (*)(int, struct data *payload))events[n].data.ptr)(events[n].events,
&payload);
}
}
ALOGI("exiting worker thread");
error:
close(uevent_fd);
if (epoll_fd >= 0)
close(epoll_fd);
return NULL;
}
void sighandler(int sig) {
if (sig == SIGUSR1) {
destroyThread = true;
ALOGI("destroy set");
return;
}
signal(SIGUSR1, sighandler);
}
ScopedAStatus Usb::setCallback(
const shared_ptr<IUsbCallback>& in_callback) {
pthread_mutex_lock(&mLock);
if ((mCallback == NULL && in_callback == NULL) ||
(mCallback != NULL && in_callback != NULL)) {
mCallback = in_callback;
pthread_mutex_unlock(&mLock);
return ScopedAStatus::ok();
}
mCallback = in_callback;
ALOGI("registering callback");
if (mCallback == NULL) {
if (!pthread_kill(mPoll, SIGUSR1)) {
pthread_join(mPoll, NULL);
ALOGI("pthread destroyed");
}
pthread_mutex_unlock(&mLock);
return ScopedAStatus::ok();
}
destroyThread = false;
signal(SIGUSR1, sighandler);
/*
* Create a background thread if the old callback value is NULL
* and being updated with a new value.
*/
if (pthread_create(&mPoll, NULL, work, this)) {
ALOGE("pthread creation failed %d", errno);
mCallback = NULL;
}
pthread_mutex_unlock(&mLock);
return ScopedAStatus::ok();
}
} // namespace usb
} // namespace hardware
} // namespace android
} // aidl

87
aidl/usb/Usb.h
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@ -0,0 +1,87 @@
/*
* Copyright (C) 2021 The Android Open Source Project
* Copyright (C) 2022 The LineageOS 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.
*/
#pragma once
#include <android-base/file.h>
#include <aidl/android/hardware/usb/BnUsb.h>
#include <aidl/android/hardware/usb/BnUsbCallback.h>
#include <utils/Log.h>
#define UEVENT_MSG_LEN 2048
#define UEVENT_MAX_EVENTS 64
// The type-c stack waits for 4.5 - 5.5 secs before declaring a port non-pd.
// The -partner directory would not be created until this is done.
// Having a margin of ~3 secs for the directory and other related bookeeping
// structures created and uvent fired.
#define PORT_TYPE_TIMEOUT 8
#define USB_DATA_PATH "/sys/devices/virtual/usb_notify/usb_control/usb_data_enabled"
#define CONTAMINANT_DETECTION_PATH "/sys/devices/virtual/sec/ccic/water"
#define DISABLE_CONTAMINANT_DETECTION "vendor.usb.contaminantdisable"
namespace aidl {
namespace android {
namespace hardware {
namespace usb {
using ::aidl::android::hardware::usb::IUsbCallback;
using ::aidl::android::hardware::usb::PortRole;
using ::android::base::ReadFileToString;
using ::android::base::WriteStringToFile;
using ::android::sp;
using ::ndk::ScopedAStatus;
using ::std::shared_ptr;
using ::std::string;
struct Usb : public BnUsb {
Usb();
ScopedAStatus enableContaminantPresenceDetection(const std::string& in_portName,
bool in_enable, int64_t in_transactionId) override;
ScopedAStatus queryPortStatus(int64_t in_transactionId) override;
ScopedAStatus setCallback(const shared_ptr<IUsbCallback>& in_callback) override;
ScopedAStatus switchRole(const string& in_portName, const PortRole& in_role,
int64_t in_transactionId) override;
ScopedAStatus enableUsbData(const string& in_portName, bool in_enable,
int64_t in_transactionId) override;
ScopedAStatus enableUsbDataWhileDocked(const string& in_portName,
int64_t in_transactionId) override;
ScopedAStatus limitPowerTransfer(const std::string& in_portName, bool in_limit,
int64_t in_transactionId)override;
ScopedAStatus resetUsbPort(const std::string& in_portName,
int64_t in_transactionId)override;
shared_ptr<IUsbCallback> mCallback;
// Protects mCallback variable
pthread_mutex_t mLock;
// Protects roleSwitch operation
pthread_mutex_t mRoleSwitchLock;
// Threads waiting for the partner to come back wait here
pthread_cond_t mPartnerCV;
// lock protecting mPartnerCV
pthread_mutex_t mPartnerLock;
// Variable to signal partner coming back online after type switch
bool mPartnerUp;
bool mMoistureDetectionEnabled;
private:
pthread_t mPoll;
};
} // namespace usb
} // namespace hardware
} // namespace android
} // aidl

15
aidl/usb/android.hardware.usb-service.exynos9810.rc
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@ -0,0 +1,15 @@
service vendor.usb_default /vendor/bin/hw/android.hardware.usb-service.exynos9810
class hal
user system
group system
on post-fs
chown root system /sys/class/typec/port0/power_role
chown root system /sys/class/typec/port0/data_role
chown root system /sys/class/typec/port0/port_type
chown root system /sys/devices/virtual/sec/ccic/water
chown root system /sys/devices/virtual/usb_notify/usb_control/usb_data_enabled
chmod 664 /sys/class/typec/port0/power_role
chmod 664 /sys/class/typec/port0/data_role
chmod 664 /sys/class/typec/port0/port_type
chmod 664 /sys/devices/virtual/usb_notify/usb_control/usb_data_enabled

10
aidl/usb/android.hardware.usb-service.exynos9810.xml
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@ -0,0 +1,10 @@
<manifest version="1.0" type="device">
<hal format="aidl">
<name>android.hardware.usb</name>
<version>1</version>
<interface>
<name>IUsb</name>
<instance>default</instance>
</interface>
</hal>
</manifest>

35
aidl/usb/service.cpp
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@ -0,0 +1,35 @@
/*
* Copyright (C) 2021 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.
*/
#include <android-base/logging.h>
#include <android/binder_manager.h>
#include <android/binder_process.h>
#include "Usb.h"
using ::aidl::android::hardware::usb::Usb;
int main() {
ABinderProcess_setThreadPoolMaxThreadCount(0);
std::shared_ptr<Usb> usb = ndk::SharedRefBase::make<Usb>();
const std::string instance = std::string() + Usb::descriptor + "/default";
binder_status_t status = AServiceManager_addService(usb->asBinder().get(), instance.c_str());
CHECK(status == STATUS_OK);
ABinderProcess_joinThreadPool();
return -1; // Should never be reached
}

2
common.mk
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@ -389,7 +389,7 @@ PRODUCT_PACKAGES += \
# USB
PRODUCT_PACKAGES += \
android.hardware.usb@1.3-service-qti
android.hardware.usb@1.3-service.exynos9810
# Vibrator
PRODUCT_PACKAGES += \

1
sepolicy/vendor/file_contexts vendored
Unescape View File

@ -68,6 +68,7 @@
/(vendor|system/vendor)/bin/hw/android\.hardware\.light(@[0-9].[0-9])?-service\.exynos9810 u:object_r:hal_light_default_exec:s0
/(vendor|system/vendor)/bin/hw/android\.hardware\.vibrator(@[0-9].[0-9])?-service\.exynos9810 u:object_r:hal_vibrator_default_exec:s0
/(vendor|system/vendor)/bin/hw/android\.hardware\.power(@[0-9]\.[0-9])?-service\.exynos9810-libperfmgr u:object_r:hal_power_default_exec:s0
/(vendor|system/vendor)/bin/hw/android\.hardware\.usb@[0-9]\.[0-9]-service\.exynos9810 u:object_r:hal_usb_default_exec:s0
/(vendor|system/vendor)/bin/hw/android\.hardware\.sensors-service(\.exynos9810-multihal)? u:object_r:hal_sensors_default_exec:s0
/(vendor|system/vendor)/bin/hw/android\.hardware\.memtrack-service.exynos9810 u:object_r:hal_memtrack_default_exec:s0

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