Lenovo ThinkPad Z13 Gen 2 (#844)

lenovo-thinkpad-z: remove HiDPI

* lenovo-thinkpad-z: move z13 to gen1/z13, leave generic settings

* lenovo-thinkpad-z-gen2: add z13

* Update lenovo/thinkpad/z/gen2/default.nix

* Update lenovo/thinkpad/z/gen2/default.nix

lenovo/thinkpad/z/default.nix

@@ -7,17 +7,14 @@
     ../../../common/pc/laptop
     ../../../common/pc/laptop/acpi_call.nix
     ../../../common/pc/laptop/ssd
-    ../../../common/hidpi.nix # can be dropped after nixos 23.05
   ];
-  # kernel versions prior to 5.18 won't boot
-  boot.kernelPackages = lib.mkIf (lib.versionOlder pkgs.linux.version "5.18") (lib.mkDefault pkgs.linuxPackages_latest);
 
   hardware.enableRedistributableFirmware = lib.mkDefault true;
   hardware.trackpoint.device = lib.mkDefault "TPPS/2 Elan TrackPoint";
 
   services.fprintd.enable = lib.mkDefault true;
 
-  # kernel versions below 6.0 don't contain ACPI suspend2idle drivers for the Z13s AMD hardware
+  # kernel versions below 6.0 don’t contain ACPI suspend2idle drivers for the Z-series’ AMD hardware
   # my Z13 froze after waking up from suspend/ hibernate
   services.logind.lidSwitch = lib.mkIf (lib.versionOlder pkgs.linux.version "6.00") (lib.mkDefault "lock");
 }

lenovo/thinkpad/z/gen1/default.nix

@@ -0,0 +1,8 @@
+{ lib, pkgs, ... }: {
+  imports = [
+    ../../../../lenovo/thinkpad/z
+  ];
+
+  # Kernel 5.18 is required for the Ryzen 6000 series
+  boot.kernelPackages = lib.mkIf (lib.versionOlder pkgs.linux.version "5.18") (lib.mkDefault pkgs.linuxPackages_latest);
+}

lenovo/thinkpad/z/gen1/z13/default.nix

@@ -0,0 +1,5 @@
+{
+  imports = [
+    ../../../../../lenovo/thinkpad/z/gen1
+  ];
+}

lenovo/thinkpad/z/gen2/default.nix

@@ -0,0 +1,44 @@
+{ lib, pkgs, ... }:
+
+{
+  imports = [
+    ../../../../lenovo/thinkpad/z
+  ];
+
+  # Kernel 6.4 is required for the Ryzen 7040 series
+  boot.kernelPackages = lib.mkIf (lib.versionOlder pkgs.linux.version "6.4") (lib.mkDefault pkgs.linuxPackages_latest);
+
+  systemd.services = {
+    # Modified from Arch Wiki
+    "touchpad-fix" = {
+      enable = lib.mkDefault true;
+      description = "I2C HID devices can fail to initialize so try to reload";
+      unitConfig = {
+        Type = "oneshot";
+      };
+      serviceConfig = {
+        User = "root";
+      };
+      wantedBy = [ "multi-user.target" ];
+      after = [ "multi-user.target" ];
+      script = ''
+        count=0
+        while true; do
+            ${lib.getExe pkgs.libinput} list-devices | ${lib.getExe pkgs.gnugrep} --quiet SNSL && break
+            count=$((count + 1))
+
+            if test $count -ge 5; then
+                echo "Touchpad not read after $count attempts"
+                break
+            fi
+
+            echo "Touchpad not ready; attempt $count to reload"
+            ${pkgs.kmod}/bin/rmmod i2c_hid_acpi
+            ${pkgs.kmod}/bin/modprobe i2c_hid_acpi
+
+            sleep $((2 + (count * 3)))
+        done
+      '';
+    };
+  };
+}

lenovo/thinkpad/z/gen2/z13/default.nix

@@ -0,0 +1,19 @@
+{ pkgs, lib, ...}:
+
+{
+  imports = [
+    ../../../../../lenovo/thinkpad/z/gen2
+  ];
+
+  sound.extraConfig = ''
+    pcm.!default {
+        type plug
+        slave.pcm "hw:1,0"
+    }
+
+    ctl.!default {
+        type hw
+        card 1
+    }
+  '';
+}

lenovo/thinkpad/z/z13/default.nix

@@ -1,5 +0,0 @@
-{
-  imports = [
-    ../../../../lenovo/thinkpad/z
-  ];
-}

lenovo/thinkpad/z13/default.nix

@@ -0,0 +1,10 @@
+{
+  assertions = [
+    {
+      assertion = true;
+      message = ''
+        Lenovo Z-series received a second generation so the hardware configuration has been split by generation. For the Z13 Gen 1 config, change from `lenovo-thinkpad-z13` to `lenovo-thinkpad-z13-gen1`.
+      '';
+    }
+  ];
+}