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-rw-r--r--services/inputflinger/reader/EventHub.cpp205
-rw-r--r--services/inputflinger/reader/include/EventHub.h19
2 files changed, 117 insertions, 107 deletions
diff --git a/services/inputflinger/reader/EventHub.cpp b/services/inputflinger/reader/EventHub.cpp
index db5032d51e..5744b83d64 100644
--- a/services/inputflinger/reader/EventHub.cpp
+++ b/services/inputflinger/reader/EventHub.cpp
@@ -52,6 +52,7 @@
#include <filesystem>
#include <regex>
+#include <utility>
#include "EventHub.h"
@@ -193,8 +194,7 @@ static nsecs_t processEventTimestamp(const struct input_event& event) {
}
/**
- * Returns the sysfs root path of the input device
- *
+ * Returns the sysfs root path of the input device.
*/
static std::optional<std::filesystem::path> getSysfsRootPath(const char* devicePath) {
std::error_code errorCode;
@@ -301,6 +301,83 @@ static std::optional<std::array<LightColor, COLOR_NUM>> getColorIndexArray(
return colors;
}
+/**
+ * Read information about batteries exposed through the sysfs path.
+ */
+static std::unordered_map<int32_t /*batteryId*/, RawBatteryInfo> readBatteryConfiguration(
+ const std::filesystem::path& sysfsRootPath) {
+ std::unordered_map<int32_t, RawBatteryInfo> batteryInfos;
+ int32_t nextBatteryId = 0;
+ // Check if device has any battery.
+ const auto& paths = findSysfsNodes(sysfsRootPath, SysfsClass::POWER_SUPPLY);
+ for (const auto& nodePath : paths) {
+ RawBatteryInfo info;
+ info.id = ++nextBatteryId;
+ info.path = nodePath;
+ info.name = nodePath.filename();
+
+ // Scan the path for all the files
+ // Refer to https://www.kernel.org/doc/Documentation/leds/leds-class.txt
+ const auto& files = allFilesInPath(nodePath);
+ for (const auto& file : files) {
+ const auto it = BATTERY_CLASSES.find(file.filename().string());
+ if (it != BATTERY_CLASSES.end()) {
+ info.flags |= it->second;
+ }
+ }
+ batteryInfos.insert_or_assign(info.id, info);
+ ALOGD("configureBatteryLocked rawBatteryId %d name %s", info.id, info.name.c_str());
+ }
+ return batteryInfos;
+}
+
+/**
+ * Read information about lights exposed through the sysfs path.
+ */
+static std::unordered_map<int32_t /*lightId*/, RawLightInfo> readLightsConfiguration(
+ const std::filesystem::path& sysfsRootPath) {
+ std::unordered_map<int32_t, RawLightInfo> lightInfos;
+ int32_t nextLightId = 0;
+ // Check if device has any lights.
+ const auto& paths = findSysfsNodes(sysfsRootPath, SysfsClass::LEDS);
+ for (const auto& nodePath : paths) {
+ RawLightInfo info;
+ info.id = ++nextLightId;
+ info.path = nodePath;
+ info.name = nodePath.filename();
+ info.maxBrightness = std::nullopt;
+ size_t nameStart = info.name.rfind(":");
+ if (nameStart != std::string::npos) {
+ // Trim the name to color name
+ info.name = info.name.substr(nameStart + 1);
+ // Set InputLightClass flag for colors
+ const auto it = LIGHT_CLASSES.find(info.name);
+ if (it != LIGHT_CLASSES.end()) {
+ info.flags |= it->second;
+ }
+ }
+ // Scan the path for all the files
+ // Refer to https://www.kernel.org/doc/Documentation/leds/leds-class.txt
+ const auto& files = allFilesInPath(nodePath);
+ for (const auto& file : files) {
+ const auto it = LIGHT_CLASSES.find(file.filename().string());
+ if (it != LIGHT_CLASSES.end()) {
+ info.flags |= it->second;
+ // If the node has maximum brightness, read it
+ if (it->second == InputLightClass::MAX_BRIGHTNESS) {
+ std::string str;
+ if (base::ReadFileToString(file, &str)) {
+ info.maxBrightness = std::stoi(str);
+ }
+ }
+ }
+ }
+ lightInfos.insert_or_assign(info.id, info);
+ ALOGD("configureLightsLocked rawLightId %d name %s", info.id, info.name.c_str());
+ }
+ return lightInfos;
+}
+
// --- Global Functions ---
ftl::Flags<InputDeviceClass> getAbsAxisUsage(int32_t axis,
@@ -357,18 +434,18 @@ ftl::Flags<InputDeviceClass> getAbsAxisUsage(int32_t axis,
// --- EventHub::Device ---
-EventHub::Device::Device(int fd, int32_t id, const std::string& path,
- const InputDeviceIdentifier& identifier)
+EventHub::Device::Device(int fd, int32_t id, std::string path, InputDeviceIdentifier identifier,
+ std::shared_ptr<const AssociatedDevice> assocDev)
: fd(fd),
id(id),
- path(path),
- identifier(identifier),
+ path(std::move(path)),
+ identifier(std::move(identifier)),
classes(0),
configuration(nullptr),
virtualKeyMap(nullptr),
ffEffectPlaying(false),
ffEffectId(-1),
- associatedDevice(nullptr),
+ associatedDevice(std::move(assocDev)),
controllerNumber(0),
enabled(true),
isVirtual(fd < 0) {}
@@ -557,75 +634,6 @@ status_t EventHub::Device::mapLed(int32_t led, int32_t* outScanCode) const {
return NAME_NOT_FOUND;
}
-// Check the sysfs path for any input device batteries, returns true if battery found.
-bool EventHub::AssociatedDevice::configureBatteryLocked() {
- nextBatteryId = 0;
- // Check if device has any battery.
- const auto& paths = findSysfsNodes(sysfsRootPath, SysfsClass::POWER_SUPPLY);
- for (const auto& nodePath : paths) {
- RawBatteryInfo info;
- info.id = ++nextBatteryId;
- info.path = nodePath;
- info.name = nodePath.filename();
-
- // Scan the path for all the files
- // Refer to https://www.kernel.org/doc/Documentation/leds/leds-class.txt
- const auto& files = allFilesInPath(nodePath);
- for (const auto& file : files) {
- const auto it = BATTERY_CLASSES.find(file.filename().string());
- if (it != BATTERY_CLASSES.end()) {
- info.flags |= it->second;
- }
- }
- batteryInfos.insert_or_assign(info.id, info);
- ALOGD("configureBatteryLocked rawBatteryId %d name %s", info.id, info.name.c_str());
- }
- return !batteryInfos.empty();
-}
-
-// Check the sysfs path for any input device lights, returns true if lights found.
-bool EventHub::AssociatedDevice::configureLightsLocked() {
- nextLightId = 0;
- // Check if device has any lights.
- const auto& paths = findSysfsNodes(sysfsRootPath, SysfsClass::LEDS);
- for (const auto& nodePath : paths) {
- RawLightInfo info;
- info.id = ++nextLightId;
- info.path = nodePath;
- info.name = nodePath.filename();
- info.maxBrightness = std::nullopt;
- size_t nameStart = info.name.rfind(":");
- if (nameStart != std::string::npos) {
- // Trim the name to color name
- info.name = info.name.substr(nameStart + 1);
- // Set InputLightClass flag for colors
- const auto it = LIGHT_CLASSES.find(info.name);
- if (it != LIGHT_CLASSES.end()) {
- info.flags |= it->second;
- }
- }
- // Scan the path for all the files
- // Refer to https://www.kernel.org/doc/Documentation/leds/leds-class.txt
- const auto& files = allFilesInPath(nodePath);
- for (const auto& file : files) {
- const auto it = LIGHT_CLASSES.find(file.filename().string());
- if (it != LIGHT_CLASSES.end()) {
- info.flags |= it->second;
- // If the node has maximum brightness, read it
- if (it->second == InputLightClass::MAX_BRIGHTNESS) {
- std::string str;
- if (base::ReadFileToString(file, &str)) {
- info.maxBrightness = std::stoi(str);
- }
- }
- }
- }
- lightInfos.insert_or_assign(info.id, info);
- ALOGD("configureLightsLocked rawLightId %d name %s", info.id, info.name.c_str());
- }
- return !lightInfos.empty();
-}
-
/**
* Get the capabilities for the current process.
* Crashes the system if unable to create / check / destroy the capabilities object.
@@ -1358,6 +1366,27 @@ void EventHub::assignDescriptorLocked(InputDeviceIdentifier& identifier) {
identifier.descriptor.c_str());
}
+std::shared_ptr<const EventHub::AssociatedDevice> EventHub::obtainAssociatedDeviceLocked(
+ const std::filesystem::path& devicePath) const {
+ const std::optional<std::filesystem::path> sysfsRootPathOpt =
+ getSysfsRootPath(devicePath.c_str());
+ if (!sysfsRootPathOpt) {
+ return nullptr;
+ }
+
+ const auto& path = *sysfsRootPathOpt;
+ for (const auto& [id, dev] : mDevices) {
+ if (dev->associatedDevice && dev->associatedDevice->sysfsRootPath == path) {
+ return dev->associatedDevice;
+ }
+ }
+
+ return std::make_shared<AssociatedDevice>(
+ AssociatedDevice{.sysfsRootPath = path,
+ .batteryInfos = readBatteryConfiguration(path),
+ .lightInfos = readLightsConfiguration(path)});
+}
+
void EventHub::vibrate(int32_t deviceId, const VibrationElement& element) {
std::scoped_lock _l(mLock);
Device* device = getDeviceLocked(deviceId);
@@ -2024,7 +2053,9 @@ void EventHub::openDeviceLocked(const std::string& devicePath) {
// Allocate device. (The device object takes ownership of the fd at this point.)
int32_t deviceId = mNextDeviceId++;
- std::unique_ptr<Device> device = std::make_unique<Device>(fd, deviceId, devicePath, identifier);
+ std::unique_ptr<Device> device =
+ std::make_unique<Device>(fd, deviceId, devicePath, identifier,
+ obtainAssociatedDeviceLocked(devicePath));
ALOGV("add device %d: %s\n", deviceId, devicePath.c_str());
ALOGV(" bus: %04x\n"
@@ -2042,24 +2073,6 @@ void EventHub::openDeviceLocked(const std::string& devicePath) {
// Load the configuration file for the device.
device->loadConfigurationLocked();
- // Check the sysfs root path
- const std::optional<std::filesystem::path> sysfsRootPath = getSysfsRootPath(devicePath.c_str());
- if (sysfsRootPath.has_value()) {
- std::shared_ptr<AssociatedDevice> associatedDevice;
- for (const auto& [id, dev] : mDevices) {
- if (dev->associatedDevice && dev->associatedDevice->sysfsRootPath == *sysfsRootPath) {
- associatedDevice = dev->associatedDevice;
- }
- }
- if (!associatedDevice) {
- associatedDevice = std::make_shared<AssociatedDevice>(sysfsRootPath.value());
- associatedDevice->configureBatteryLocked();
- associatedDevice->configureLightsLocked();
- }
-
- device->associatedDevice = associatedDevice;
- }
-
// Figure out the kinds of events the device reports.
device->readDeviceBitMask(EVIOCGBIT(EV_KEY, 0), device->keyBitmask);
device->readDeviceBitMask(EVIOCGBIT(EV_ABS, 0), device->absBitmask);
@@ -2337,7 +2350,7 @@ void EventHub::createVirtualKeyboardLocked() {
std::unique_ptr<Device> device =
std::make_unique<Device>(-1, ReservedInputDeviceId::VIRTUAL_KEYBOARD_ID, "<virtual>",
- identifier);
+ identifier, nullptr /*associatedDevice*/);
device->classes = InputDeviceClass::KEYBOARD | InputDeviceClass::ALPHAKEY |
InputDeviceClass::DPAD | InputDeviceClass::VIRTUAL;
device->loadKeyMapLocked();
diff --git a/services/inputflinger/reader/include/EventHub.h b/services/inputflinger/reader/include/EventHub.h
index 7d4196a05c..60460b4105 100644
--- a/services/inputflinger/reader/include/EventHub.h
+++ b/services/inputflinger/reader/include/EventHub.h
@@ -537,18 +537,13 @@ public:
~EventHub() override;
private:
+ // Holds information about the sysfs device associated with the Device.
struct AssociatedDevice {
// The sysfs root path of the misc device.
std::filesystem::path sysfsRootPath;
- int32_t nextBatteryId;
- int32_t nextLightId;
- std::unordered_map<int32_t, RawBatteryInfo> batteryInfos;
- std::unordered_map<int32_t, RawLightInfo> lightInfos;
- explicit AssociatedDevice(std::filesystem::path sysfsRootPath)
- : sysfsRootPath(sysfsRootPath), nextBatteryId(0), nextLightId(0) {}
- bool configureBatteryLocked();
- bool configureLightsLocked();
+ std::unordered_map<int32_t /*batteryId*/, RawBatteryInfo> batteryInfos;
+ std::unordered_map<int32_t /*lightId*/, RawLightInfo> lightInfos;
};
struct Device {
@@ -582,12 +577,12 @@ private:
// A shared_ptr of a device associated with the input device.
// The input devices that have the same sysfs path have the same associated device.
- std::shared_ptr<AssociatedDevice> associatedDevice;
+ const std::shared_ptr<const AssociatedDevice> associatedDevice;
int32_t controllerNumber;
- Device(int fd, int32_t id, const std::string& path,
- const InputDeviceIdentifier& identifier);
+ Device(int fd, int32_t id, std::string path, InputDeviceIdentifier identifier,
+ std::shared_ptr<const AssociatedDevice> assocDev);
~Device();
void close();
@@ -632,6 +627,8 @@ private:
void createVirtualKeyboardLocked() REQUIRES(mLock);
void addDeviceLocked(std::unique_ptr<Device> device) REQUIRES(mLock);
void assignDescriptorLocked(InputDeviceIdentifier& identifier) REQUIRES(mLock);
+ std::shared_ptr<const AssociatedDevice> obtainAssociatedDeviceLocked(
+ const std::filesystem::path& devicePath) const REQUIRES(mLock);
void closeDeviceByPathLocked(const std::string& devicePath) REQUIRES(mLock);
void closeVideoDeviceByPathLocked(const std::string& devicePath) REQUIRES(mLock);
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-21 09:50:20 +0000