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Improve check for kernel support for Xbox360W LED configuration

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This commit is contained in:
Cameron Gutman
2022-12-14 21:49:42 -06:00
parent fa7eb1c4b1
commit 2d7493fd1e
1 changed files with 23 additions and 11 deletions
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34
app/src/main/java/com/limelight/binding/input/driver/UsbDriverService.java
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@@ -253,24 +253,36 @@ public class UsbDriverService extends Service implements UsbDriverListener {
}
public static boolean kernelSupportsXbox360W() {
// Check if this kernel is 4.2+ to see if the xpad driver sets Xbox 360 wireless LEDs
// https://github.com/torvalds/linux/commit/75b7f05d2798ee3a1cc5bbdd54acd0e318a80396
String kernelVersion = System.getProperty("os.version");
if (kernelVersion != null) {
if (kernelVersion.startsWith("2.") || kernelVersion.startsWith("3.") ||
kernelVersion.startsWith("4.0.") || kernelVersion.startsWith("4.1.")) {
// Even if LED devices are present, the driver won't set the initial LED state.
return false;
}
}
// We know we have a kernel that should set Xbox 360 wireless LEDs, but we still don't
// know if CONFIG_JOYSTICK_XPAD_LEDS was enabled during the kernel build. To detect this,
// we will look for an xpad LED device. If we find even a single match here, that tells us
// that CONFIG_JOYSTICK_XPAD_LEDS is enabled and we can assume (based on our version check
// above) that the kernel will handle setting LEDs on the wireless controllers on its own.
//
// NB: This will be inaccurate when called without any Xbox 360 or Xbox 360 wireless gamepad
// attached, but it will be correct when it matters (when we're actually checking a real
// matching device).
File systemDir = new File("/sys/class/leds");
File[] files = systemDir.listFiles();
if (files != null) {
for (File f : files) {
if (f.getName().equals("xpad0") ||
f.getName().equals("xpad1") ||
f.getName().equals("xpad2") ||
f.getName().equals("xpad3") ||
f.getName().equals("xpad4") ||
f.getName().equals("xpad5") ||
f.getName().equals("xpad6") ||
f.getName().equals("xpad7") ||
f.getName().equals("xpad8") ||
f.getName().equals("xpad9")) {
return true;
if (f.getName().startsWith("xpad")) {
return true;
}
}
}
return false;
}