lenovo/thinkpad/p14s: align with Thinkpad T14 configs

lenovo/thinkpad/p14s/amd/default.nix

@@ -0,0 +1,12 @@
+{ lib, pkgs, ... }:
+
+{
+  imports = [
+    ../.
+    ../../../../common/cpu/amd
+    ../../../../common/gpu/amd
+  ];
+
+  # For support of newer AMD GPUs, backlight and internal microphone
+  boot.kernelPackages = lib.mkIf (lib.versionOlder pkgs.linux.version "5.8") pkgs.linuxPackages_latest;
+}

lenovo/thinkpad/p14s/amd/gen2/default.nix

@@ -1,9 +1,7 @@
 { lib, pkgs, config, ... }:
 {
   imports = [
-    ../../../../../common/pc/laptop/acpi_call.nix
-    ../../../../../common/cpu/amd
-    ../../../../../common/gpu/amd
+    ../.
   ];
 
   # For suspending to RAM, set Config -> Power -> Sleep State to "Linux" in EFI.

lenovo/thinkpad/p14s/default.nix

@@ -0,0 +1,22 @@
+{ lib, pkgs, ... }:
+
+{
+  # P14s is a rebadged T14 with slight internal differences.
+  # This may change for future models, so we duplicate the T14 hierarchy here.
+
+  imports = [
+    ../.
+    ../../../common/pc/laptop/acpi_call.nix
+    ../../../common/pc/laptop/ssd
+  ];
+
+  # Force use of the amdgpu driver for backlight control on kernel versions where the
+  # native backlight driver is not already preferred. This is preferred over the
+  # "vendor" setting, in this case the thinkpad_acpi driver.
+  # See https://hansdegoede.livejournal.com/27130.html
+  # See https://lore.kernel.org/linux-acpi/20221105145258.12700-1-hdegoede@redhat.com/
+  boot.kernelParams = lib.mkIf (lib.versionOlder pkgs.linux.version "6.2") [ "acpi_backlight=native" ];
+
+  # see https://github.com/NixOS/nixpkgs/issues/69289
+  boot.kernelPackages = lib.mkIf (lib.versionOlder pkgs.linux.version "5.2") pkgs.linuxPackages_latest;
+}