107 lines
3.0 KiB
C++
107 lines
3.0 KiB
C++
/*
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* Copyright (C) 2020 The LineageOS Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <aidl/android/hardware/power/BnPower.h>
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#include <android-base/file.h>
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#include <android-base/logging.h>
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#include <linux/input.h>
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namespace {
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int open_ts_input() {
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int fd = -1;
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DIR* dir = opendir("/dev/input");
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if (dir != NULL) {
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struct dirent* ent;
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while ((ent = readdir(dir)) != NULL) {
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if (ent->d_type == DT_CHR) {
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char absolute_path[PATH_MAX] = {0};
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char name[80] = {0};
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strcpy(absolute_path, "/dev/input/");
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strcat(absolute_path, ent->d_name);
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fd = open(absolute_path, O_RDWR);
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if (ioctl(fd, EVIOCGNAME(sizeof(name) - 1), &name) > 0) {
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if (strcmp(name, "atmel_mxt_ts") == 0 || strcmp(name, "fts_ts") == 0 ||
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strcmp(name, "fts") == 0 || strcmp(name, "ft5x46") == 0 ||
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strcmp(name, "synaptics_dsx") == 0 ||
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strcmp(name, "NVTCapacitiveTouchScreen") == 0)
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break;
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}
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close(fd);
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fd = -1;
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}
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}
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closedir(dir);
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}
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return fd;
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}
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} // anonymous namespace
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace power {
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namespace impl {
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static constexpr int kInputEventWakeupModeOff = 4;
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static constexpr int kInputEventWakeupModeOn = 5;
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using ::aidl::android::hardware::power::Mode;
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bool isDeviceSpecificModeSupported(Mode type, bool* _aidl_return) {
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switch (type) {
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case Mode::DOUBLE_TAP_TO_WAKE:
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*_aidl_return = true;
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return true;
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default:
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return false;
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}
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}
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bool setDeviceSpecificMode(Mode type, bool enabled) {
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switch (type) {
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case Mode::DOUBLE_TAP_TO_WAKE: {
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int fd = open_ts_input();
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if (fd == -1) {
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LOG(WARNING)
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<< "DT2W won't work because no supported touchscreen input devices were found";
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return false;
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}
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struct input_event ev;
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ev.type = EV_SYN;
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ev.code = SYN_CONFIG;
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ev.value = enabled ? kInputEventWakeupModeOn : kInputEventWakeupModeOff;
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write(fd, &ev, sizeof(ev));
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close(fd);
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}
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return true;
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default:
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return false;
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}
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}
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} // namespace impl
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} // namespace power
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} // namespace hardware
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} // namespace android
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} // namespace aidl
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