From e55e506862c8c2bc37520fc72a16093f9a2a23fc Mon Sep 17 00:00:00 2001
From: Alfred Wingate <parona@protonmail.com>
Date: Mon, 23 Sep 2024 14:35:35 +0300
Subject: [PATCH] Allow disabling linking to libdrm_amdgpu

Notably users on Gentoo may choose to disable building libdrm with amdgpu support leading to a build
failure.

Signed-off-by: Alfred Wingate <parona@protonmail.com>
--- a/coolercontrold/Cargo.toml
+++ b/coolercontrold/Cargo.toml
@@ -17,6 +17,7 @@ license = "GPL-3.0-or-later"
 [features]
 default = []
 io_uring = ["dep:tokio-uring"]
+libdrm_amdgpu = []
 
 [dependencies]
 log = "0.4.27"
--- a/coolercontrold/src/repositories/gpu/amd.rs
+++ b/coolercontrold/src/repositories/gpu/amd.rs
@@ -37,7 +37,9 @@ use crate::repositories::hwmon::{devices, fans, freqs, power, temps};
 use crate::repositories::repository::DeviceLock;
 use anyhow::{anyhow, Context, Result};
 use heck::ToTitleCase;
+#[cfg(feature = "libdrm_amdgpu")]
 use libdrm_amdgpu_sys::LibDrmAmdgpu;
+#[cfg(feature = "libdrm_amdgpu")]
 use libdrm_amdgpu_sys::AMDGPU::GPU_INFO;
 use log::{debug, error, info, trace, warn};
 use regex::Regex;
@@ -145,7 +147,11 @@ impl GpuAMD {
                     debug!("Could not get RDNA3/4 fan curve info: {err}");
                 })
                 .ok();
+            #[cfg(feature = "libdrm_amdgpu")]
             let drm_device_name = Self::get_drm_device_name(&path).await;
+            #[cfg(not(feature = "libdrm_amdgpu"))]
+            // https://github.com/Umio-Yasuno/libdrm-amdgpu-sys-rs/blob/c10593dd00ad822d71e284424455023a3ad6a20c/amdgpu/mod.rs#L14
+            let drm_device_name = Some(String::from("AMD Radeon Graphics"));
             let pci_device_names = devices::get_device_pci_names(&path).await;
             let model = devices::get_device_model_name(&path)
                 .await
@@ -187,6 +193,7 @@ impl GpuAMD {
         }
     }
 
+    #[cfg(feature = "libdrm_amdgpu")]
     async fn get_drm_device_name(base_path: &Path) -> Option<String> {
         let drm_amdgpu = LibDrmAmdgpu::new().ok()?;
         let slot_name = devices::get_pci_slot_name(base_path).await?;
-- 
2.49.0