Rebase to flake parts #7

2026-05-08 19:12:16 -03:00
parent 1015cf4577
commit f98606dcce
23 changed files with 1060 additions and 11 deletions
@@ -0,0 +1,27 @@
+{ ... }: {
+  # T2: align with https://github.com/deqrocks/apple-bce#required-kernel-parameters (suspend stack).
+  # (Older t2linux guidance used s2idle + pcie_ports=compat; deqrocks fork expects deep + auto + pm_async=off.)
+  boot.kernelParams = [
+    "mem_sleep_default=deep"
+    "intel_iommu=on"
+    "iommu=pt"
+    "pcie_ports=auto"
+    "pm_async=off"
+    # https://wiki.t2linux.org/guides/hybrid-graphics/#enabling-the-igpu — helps some post-suspend black screens.
+    "i915.enable_guc=3"
+  ];
+
+  # Hybrid T2 Macs: prefer Intel for display/GL (saves power; avoids broken AMDGPU after resume).
+  # https://wiki.t2linux.org/guides/hybrid-graphics/
+  boot.extraModprobeConfig = ''
+    options apple-gmux force_igd=y
+  '';
+
+  # If the AMD dGPU misbehaves after S3 (Electron apps won’t start, suspend breaks), keep it unloaded.
+  # See https://github.com/deqrocks/apple-bce#notes-for-dgpu-models — drop this list if you need DRI_PRIME
+  # or external displays wired through the dGPU.
+  boot.blacklistedKernelModules = [ "amdgpu" ];
+
+  boot.kernelModules = [ "apple-bce" ];
+  boot.initrd.availableKernelModules = [ "apple-bce" ];
+}
@@ -0,0 +1,65 @@
+{ lib, pkgs, inputs, config, ... }:
+let
+  # Two-stage callPackage matches nixos-hardware apple/t2 generic.nix.
+  linuxT2GenericFromDir =
+    { lib, ... }@args:
+    { kernel, t2linuxPatchesSrc }:
+    let
+      patchNames = lib.sort lib.lessThan (
+        lib.filter (n: builtins.match "^[0-9]{4}-.*\\.patch$" n != null) (
+          lib.attrNames (builtins.readDir t2linuxPatchesSrc)
+        )
+      );
+      t2Patches = map
+        (name: {
+          inherit name;
+          patch = "${t2linuxPatchesSrc}/${name}";
+        })
+        patchNames;
+    in
+    kernel.override (
+      args
+      // {
+        pname = "linux-t2";
+        structuredExtraConfig = with lib.kernel; {
+          # In-tree staging driver disabled; we ship deqrocks/apple-bce via boot.extraModulePackages.
+          APPLE_BCE = no;
+          APPLE_GMUX = module;
+          APFS_FS = module;
+          BRCMFMAC = module;
+          BT_BCM = module;
+          BT_HCIBCM4377 = module;
+          BT_HCIUART_BCM = yes;
+          BT_HCIUART = module;
+          HID_APPLETB_BL = module;
+          HID_APPLETB_KBD = module;
+          HID_APPLE = module;
+          HID_MAGICMOUSE = module;
+          DRM_APPLETBDRM = module;
+          HID_SENSOR_ALS = module;
+          SND_PCM = module;
+          STAGING = yes;
+        };
+        kernelPatches = t2Patches ++ (args.kernelPatches or [ ]);
+        argsOverride.extraMeta = {
+          description = "The Linux kernel (with patches from the T2 Linux project)";
+          maintainers = with lib.maintainers; [ soopyc ];
+        };
+      }
+      // (args.argsOverride or { })
+    );
+
+  linuxT2Kernel = (pkgs.callPackage linuxT2GenericFromDir { }) {
+    kernel = pkgs.linux_6_19;
+    t2linuxPatchesSrc = inputs.t2linux-patches;
+  };
+in
+{
+  boot.kernelPackages = lib.mkForce (pkgs.linuxPackagesFor linuxT2Kernel);
+
+  # https://github.com/deqrocks/apple-bce (branch no-state-suspend) — BCE + suspend-oriented fixes.
+  # README also mentions companion userspace: t2-upower, t2-kbd-tb (not packaged here yet).
+  boot.extraModulePackages = [
+    (config.boot.kernelPackages.callPackage ./apple-bce.nix { })
+  ];
+}