SCSI support: ROG Arion external drive LED control

asusd/src/aura_scsi/mod.rs

@@ -0,0 +1,45 @@
+use std::sync::Arc;
+
+use config::ScsiConfig;
+use rog_scsi::{AuraEffect, Device, Task};
+use tokio::sync::{Mutex, MutexGuard};
+
+use crate::error::RogError;
+
+pub mod config;
+pub mod trait_impls;
+
+#[derive(Clone)]
+pub struct ScsiAura {
+    device: Arc<Mutex<Device>>,
+    config: Arc<Mutex<ScsiConfig>>,
+}
+
+impl ScsiAura {
+    pub fn new(device: Arc<Mutex<Device>>, config: Arc<Mutex<ScsiConfig>>) -> Self {
+        Self { device, config }
+    }
+
+    pub async fn lock_config(&self) -> MutexGuard<ScsiConfig> {
+        self.config.lock().await
+    }
+
+    pub async fn write_effect(&self, effect: &AuraEffect) -> Result<(), RogError> {
+        let tasks: Vec<Task> = effect.into();
+        for task in &tasks {
+            self.device.lock().await.perform(task).ok();
+        }
+        Ok(())
+    }
+
+    /// Initialise the device if required. Locks the internal config so be wary
+    /// of deadlocks.
+    pub async fn do_initialization(&self) -> Result<(), RogError> {
+        let config = self.config.lock().await;
+        let mode = config.current_mode;
+        if let Some(effect) = config.modes.get(&mode) {
+            self.write_effect(effect).await?;
+        }
+        Ok(())
+    }
+}