feat: update kernel, add patches for backlight, etc.

kernel.nix

@@ -1,26 +1,27 @@
 { config, lib, pkgs, ... }:
 
 let
-  inherit (config.boot.loader) efi;
-
   linux_x1e_pkg = { buildLinux, ... } @ args:
     buildLinux (args // rec {
-      version = "6.10.0";
+      version = "6.12.0";
-      modDirVersion = "6.10.0-next-20240725";
+      modDirVersion = "6.12.0-rc3";
 
-      src = pkgs.fetchFromGitLab {
+      src = pkgs.fetchFromGitHub {
-        domain = "git.codelinaro.org";
+       owner = "jhovold";
-        owner = "abel.vesa";
+       repo = "linux";
-        repo = "linux";
+       # wip/x1e80100-6.12-rc3
-        rev = "x1e80100-20240725"; # "x1e80100-next";
+       rev = "84318c8e3038f579070e7c5d109d1d2311a5f437";
-        hash = "sha256-0DFmPJEFl+cQT3Li4vuptBwavRc9CQOatd8TIYht+54=";
+       hash = "sha256-kpuzjqcI4YGS+S9OvIUhm6z8xCGMA5h5+JlcHhoEETM=";
       };
       kernelPatches = (args.kernelPatches or [ ]);
 
-      extraMeta.branch = "6.10";
+      extraMeta.branch = "6.12";
     } // (args.argsOverride or { }));
 
-  linux_x1e = pkgs.callPackage linux_x1e_pkg { defconfig = "x1e_defconfig"; };
+  linux_x1e = pkgs.callPackage linux_x1e_pkg {
+    defconfig = "johan_defconfig";
+  };
+
   linuxPackages_x1e = pkgs.recurseIntoAttrs (pkgs.linuxPackagesFor linux_x1e);
 
 in {
@@ -34,42 +35,68 @@ in {
   boot = {
     kernelPackages = linuxPackages_x1e;
 
+    kernelPatches = [
+      {
+        name = "backlight";
+        patch = ./patches/backlight.patch;
+      }
+      {
+        name = "bluetooth";
+        patch = ./patches/bluetooth.patch;
+      }
+      {
+        name = "disable-type-c-dp";
+        patch = ./patches/disable-type-c-dp.patch;
+      }
+      {
+        name = "vmlinuz.efi";
+        patch = null;
+        extraStructuredConfig = with lib.kernel; {
+          EFI_ZBOOT = lib.mkForce no;
+        };
+      }
+      {
+        name = "disable-qr-code-panic-screen";
+        patch = null;
+        extraStructuredConfig = with lib.kernel; {
+          DRM_PANIC_SCREEN_QR_CODE = lib.mkForce no;
+        };
+      }
+      {
+        name = "disable-rust";
+        patch = null;
+        extraStructuredConfig = with lib.kernel; {
+          RUST = lib.mkForce no;
+        };
+      }
+    ];
+
     kernelParams = [
-      "dtb=${dtbName}"
-
-      #"initcall_debug"
-
-      #"earlycon=efifb"
-      "console=tty0"
-      #"ignore_loglevel"
-      #"keep_bootcon"
-
       "regulator_ignore_unused"
       "clk_ignore_unused"
       "pd_ignore_unused"
       "arm64.nopauth"
-      #"acpi=no"
       "efi=novamap"
-      #"efi=noruntime"
-
       "pcie_aspm.policy=powersupersave"
       "iommu.strict=0"
       "iommu.passthrough=0"
-
-      #"earlyprintk=xdbc"
-      #"usbcore.autosuspend=-1"
-      "module_blacklist=edac_core,qcom_q6v5_pas"
     ];
 
     supportedFilesystems.zfs = false;
 
     initrd = {
+      systemd = {
+        enable = true;
+        tpm2.enable = false;
+      };
+
       includeDefaultModules = false;
 
       availableKernelModules = [
         "nvme"
         "uas"
         "usb-storage"
+        "pcie-qcom"
 
         "gpio-sbu-mux"
         "leds-qcom-lpg"
@@ -100,11 +127,6 @@ in {
         # fat32
         "vfat" "nls-cp437" "nls-iso8859-1"
       ];
-
-      systemd = {
-        enable = true;
-        enableTpm2 = false;
-      };
     };
   };
 }

patches/backlight.patch

@@ -0,0 +1,51 @@
+diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
+index 04d6983ca8f3..0d42b275fd66 100644
+--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
++++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
+@@ -19,6 +19,14 @@ / {
+ 	compatible = "lenovo,thinkpad-t14s", "qcom,x1e78100", "qcom,x1e80100";
+ 	chassis-type = "laptop";
+ 
++	backlight: backlight {
++		compatible = "pwm-backlight";
++		pwms = <&pmk8550_pwm 0 5000000>;
++		enable-gpios = <&pmc8380_3_gpios 4 GPIO_ACTIVE_HIGH>;
++		pinctrl-0 = <&edp_bl_en>, <&edp_bl_pwm>;
++		pinctrl-names = "default";
++	};
++
+ 	gpio-keys {
+ 		compatible = "gpio-keys";
+ 
+@@ -744,12 +752,9 @@ &mdss_dp3 {
+ 	aux-bus {
+ 		panel {
+ 			compatible = "edp-panel";
+-			enable-gpios = <&pmc8380_3_gpios 4 GPIO_ACTIVE_HIGH>;
++			backlight = <&backlight>;
+ 			power-supply = <&vreg_edp_3p3>;
+ 
+-			pinctrl-0 = <&edp_bl_en>;
+-			pinctrl-names = "default";
+-
+ 			port {
+ 				edp_panel_in: endpoint {
+ 					remote-endpoint = <&mdss_dp3_out>;
+@@ -849,6 +854,17 @@ rtmr0_1p15_reg_en: rtmr0-1p15-reg-en-state {
+ 	};
+ };
+ 
++&pmk8550_pwm {
++	status = "okay";
++};
++
++&pmk8550_gpios {
++	edp_bl_pwm: edp-bl-pwm-state {
++		pins = "gpio5";
++		function = "func3";
++	};
++};
++
+ &qupv3_0 {
+ 	status = "okay";
+ };

patches/bluetooth.patch

@@ -0,0 +1,48 @@
+diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
+index 04d6983ca8f3..0bb3ca93cfaa 100644
+--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
++++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
+@@ -19,6 +19,11 @@ / {
+ 	compatible = "lenovo,thinkpad-t14s", "qcom,x1e78100", "qcom,x1e80100";
+ 	chassis-type = "laptop";
+ 
++	aliases {
++		serial0 = &uart21;
++		serial1 = &uart14;
++	};
++
+ 	gpio-keys {
+ 		compatible = "gpio-keys";
+ 
+@@ -1013,6 +1018,31 @@ wcd_default: wcd-reset-n-active-state {
+ 		bias-disable;
+ 		output-low;
+ 	};
++
++	bt_en_default: bt-en-sleep {
++		pins = "gpio116";
++		function = "gpio";
++		output-low;
++		bias-disable;
++		qcom,drive-strength = <16>;
++	};
++};
++
++&uart14 {
++	status = "okay";
++
++	bluetooth: bt_wcn7850 {
++		compatible = "qcom,wcn7850-bt";
++		pinctrl-names = "default";
++		pinctrl-0 = <&bt_en_default>;
++		enable-gpios = <&tlmm 116 GPIO_ACTIVE_HIGH>;
++		max-speed = <3200000>;
++	};
++};
++
++&uart21 {
++	compatible = "qcom,geni-debug-uart";
++	status = "okay";
+ };
+ 
+ &usb_1_ss0_hsphy {

patches/disable-type-c-dp.patch

@@ -0,0 +1,27 @@
+diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
+index 04d6983ca8f3..998cb8920dbc 100644
+--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
++++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
+@@ -719,22 +719,6 @@ &mdss {
+ 	status = "okay";
+ };
+ 
+-&mdss_dp0 {
+-	status = "okay";
+-};
+-
+-&mdss_dp0_out {
+-	data-lanes = <0 1 2 3>;
+-};
+-
+-&mdss_dp1 {
+-	status = "okay";
+-};
+-
+-&mdss_dp1_out {
+-	data-lanes = <0 1 2 3>;
+-};
+-
+ &mdss_dp3 {
+ 	compatible = "qcom,x1e80100-dp";
+ 	/delete-property/ #sound-dai-cells;

scripts/make-image.sh

@@ -5,7 +5,7 @@ efi_part_label=i_t14sg6_efi
 nix_part_label=i_t14sg6_nix
 boot_size=256M
 
-fallocate -l4G ${file}
+fallocate -l14G ${file}
 
 parted ${file} mklabel gpt
 parted ${file} mkpart ${efi_part_label} fat32 0% ${boot_size}
@@ -23,7 +23,7 @@ mkdir /mnt/boot
 mount ${drive}p1 /mnt/boot
 
 mkdir -p /mnt/etc/nixos
-cp -r pkgs *.nix /mnt/etc/nixos/
+cp -r patches pkgs *.nix /mnt/etc/nixos/
 nixos-install --root /mnt --no-root-password
 
 umount -R /mnt