155 lines
4.1 KiB
C++
155 lines
4.1 KiB
C++
/*
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* SPDX-FileCopyrightText: The LineageOS Project
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define LOG_TAG "UdfpsHandler.xiaomi_sm8350"
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#include <aidl/android/hardware/biometrics/fingerprint/BnFingerprint.h>
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#include <android-base/logging.h>
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#include <android-base/unique_fd.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <fstream>
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#include <mutex>
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#include <thread>
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#include "UdfpsHandler.h"
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// Fingerprint hwmodule commands
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#define COMMAND_NIT 10
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#define PARAM_NIT_UDFPS 1
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#define PARAM_NIT_NONE 0
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#define COMMAND_FOD_PRESS_STATUS 1
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#define PARAM_FOD_PRESSED 1
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#define PARAM_FOD_RELEASED 0
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// Touchscreen and HBM
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#define FOD_HBM_PATH "/sys/devices/platform/soc/soc:qcom,dsi-display-primary/fod_hbm"
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#define FOD_UI_PATH "/sys/devices/platform/soc/soc:qcom,dsi-display-primary/fod_ui"
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#define FOD_HBM_OFF 0
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#define FOD_HBM_ON 1
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using ::aidl::android::hardware::biometrics::fingerprint::AcquiredInfo;
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template <typename T>
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static void set(const std::string& path, const T& value) {
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std::ofstream file(path);
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file << value;
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}
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static bool readBool(int fd) {
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char c;
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int rc;
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rc = lseek(fd, 0, SEEK_SET);
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if (rc) {
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LOG(ERROR) << "failed to seek fd, err: " << rc;
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return false;
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}
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rc = read(fd, &c, sizeof(char));
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if (rc != 1) {
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LOG(ERROR) << "failed to read bool from fd, err: " << rc;
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return false;
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}
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return c != '0';
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}
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class XiaomiUdfpsHandler : public UdfpsHandler {
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public:
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void init(fingerprint_device_t* device) {
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mDevice = device;
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std::thread([this]() {
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android::base::unique_fd fd(open(FOD_UI_PATH, O_RDONLY));
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if (fd < 0) {
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LOG(ERROR) << "failed to open " << FOD_UI_PATH << " , err: " << fd;
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return;
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}
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struct pollfd fodUiPoll = {
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.fd = fd.get(),
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.events = POLLERR | POLLPRI,
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.revents = 0,
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};
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while (true) {
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int rc = poll(&fodUiPoll, 1, -1);
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if (rc < 0) {
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LOG(ERROR) << "failed to poll " << FOD_UI_PATH << ", err: " << rc;
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continue;
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}
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if (fodUiPoll.revents & (POLLERR | POLLPRI)) {
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bool nitState = readBool(fd.get());
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mDevice->extCmd(mDevice, COMMAND_NIT,
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nitState ? PARAM_NIT_UDFPS : PARAM_NIT_NONE);
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}
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}
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}).detach();
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}
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void onFingerDown(uint32_t /*x*/, uint32_t /*y*/, float /*minor*/, float /*major*/) {
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if (mAuthSuccess) return;
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set(FOD_HBM_PATH, FOD_HBM_ON);
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mDevice->extCmd(mDevice, COMMAND_FOD_PRESS_STATUS, PARAM_FOD_PRESSED);
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}
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void onFingerUp() {
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set(FOD_HBM_PATH, FOD_HBM_OFF);
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mDevice->extCmd(mDevice, COMMAND_FOD_PRESS_STATUS, PARAM_FOD_RELEASED);
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}
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void onAcquired(int32_t result, int32_t /*vendorCode*/) {
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switch (static_cast<AcquiredInfo>(result)) {
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case AcquiredInfo::GOOD:
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case AcquiredInfo::PARTIAL:
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case AcquiredInfo::INSUFFICIENT:
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case AcquiredInfo::SENSOR_DIRTY:
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case AcquiredInfo::TOO_SLOW:
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case AcquiredInfo::TOO_FAST:
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case AcquiredInfo::TOO_DARK:
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case AcquiredInfo::TOO_BRIGHT:
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case AcquiredInfo::IMMOBILE:
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case AcquiredInfo::LIFT_TOO_SOON:
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onFingerUp();
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break;
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default:
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break;
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}
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}
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void onAuthenticationSucceeded() {
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mAuthSuccess = true;
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onFingerUp();
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std::thread([this]() {
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std::this_thread::sleep_for(std::chrono::milliseconds(500));
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mAuthSuccess = false;
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}).detach();
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}
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void onAuthenticationFailed() { onFingerUp(); }
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private:
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fingerprint_device_t* mDevice;
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bool mAuthSuccess = false;
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};
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static UdfpsHandler* create() {
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return new XiaomiUdfpsHandler();
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}
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static void destroy(UdfpsHandler* handler) {
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delete handler;
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}
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extern "C" UdfpsHandlerFactory UDFPS_HANDLER_FACTORY = {
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.create = create,
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.destroy = destroy,
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};
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