feat(Grand Unified Controller): add unified controller driver

Makefile

@@ -115,6 +115,10 @@ setup: /usr/share/dbus-1/system.d/$(DBUS_NAME).conf ## Install dbus policies
 		/usr/share/dbus-1/system.d/$(DBUS_NAME).conf
 	sudo systemctl reload dbus
 
+.PHONY: example
+example:
+	CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUNNER='sudo -E' cargo run --example unified_gamepad
+
 ##@ Distribution
 
 .PHONY: dist

examples/unified_gamepad/main.rs

@@ -0,0 +1,44 @@
+use std::{env, fs, thread::sleep, time::Duration};
+
+use inputplumber::drivers::grand_unified_controller::driver::Driver;
+
+const SEARCH_PATH: &str = "/sys/bus/hid/devices";
+
+fn main() {
+    // Look for a Unified Controller
+    let paths = fs::read_dir(SEARCH_PATH).expect("Unable to read HID devices");
+
+    println!("Searching for Unified Controller");
+    let mut device_sys_path = None;
+    for path in paths {
+        let path = path.unwrap();
+        let mut file_path = path.path().into_os_string();
+        file_path.push("/uevent");
+        println!("{file_path:?}");
+
+        let data = fs::read_to_string(file_path).unwrap();
+        println!("{data}");
+        if data.contains("InputPlumber Unified Gamepad") {
+            device_sys_path = Some(path);
+            break;
+        }
+    }
+
+    // Get the hidraw name of the device
+    let device_sys_path = device_sys_path.expect("Unable to find Unified Controller");
+    let mut hid_sys_path = device_sys_path.path().into_os_string();
+    hid_sys_path.push("/hidraw");
+    let paths = fs::read_dir(hid_sys_path).expect("Unable to read HID device info");
+    let device_name = paths.into_iter().next().unwrap().unwrap().file_name();
+
+    println!("Found Unified Controller device: {device_name:?}");
+    println!("Starting Unified Controller driver!");
+
+    let path = format!("/dev/{}", device_name.to_string_lossy());
+    let mut driver = Driver::new(path).expect("Failed to create driver instance");
+
+    loop {
+        let events = driver.poll().expect("Failed to poll device");
+        sleep(Duration::from_millis(1));
+    }
+}