mirror of
https://github.com/NixOS/nixos-hardware.git
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98 lines
3.3 KiB
Nix
98 lines
3.3 KiB
Nix
# Hardware profile for the Darter Pro 6 laptop by System76.
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#
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# https://system76.com/laptops/darter
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#
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# Regarding kernel modules, darp6 needs system76-acpi-dkms, not system76-dkms:
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#
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# [1] https://github.com/pop-os/system76-dkms/issues/39
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# jackpot51> system76-acpi-dkms is the correct driver to use on the darp6
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#
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# system76-io-dkms also appears to be loaded on darp6 with Pop!_OS, and
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# system76-dkms does not, and in fact refuses to load.
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{ config, lib, options, pkgs, ... }:
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let
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cfg = config.hardware.system76.darp6;
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# Allow silencing the warning about these options if either is defined.
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soundSettingsDefined =
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options.hardware.system76.darp6.soundVendorId.isDefined ||
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options.hardware.system76.darp6.soundSubsystemId.isDefined;
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# We neeed both options non-null to be able to apply the headset fixup though.
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soundSettingsAvailable =
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soundSettingsDefined &&
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(cfg.soundVendorId != null && cfg.soundSubsystemId != null);
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in
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{
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imports = [
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../.
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../../common/pc/laptop
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../../common/pc/laptop/ssd
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];
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options.hardware.system76.darp6 = {
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soundVendorId = lib.mkOption {
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type = with lib.types; nullOr (strMatching "0x[0-9a-f]{8}");
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description = ''
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The vendor ID of the sound card PCI device, for applying the headset fixup.
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This should be set to the value of the following file on your Darter Pro:
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/sys/class/sound/hwC0D0/vendor_id
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If this option has the default null value, then the headset fixup will
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not be applied.
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'';
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};
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soundSubsystemId = lib.mkOption {
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type = with lib.types; nullOr (strMatching "0x[0-9a-f]{8}");
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description = ''
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The subsystem ID of the sound card PCI device, for applying the headset fixup.
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This should be set to the value of the following file on your Darter Pro:
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/sys/class/sound/hwC0D0/subsystem_id
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If this option has the default null value, then the headset fixup will
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not be applied.
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'';
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};
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};
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config = lib.mkMerge [
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{
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warnings = lib.optional (!soundSettingsDefined) ''
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For full Darter Pro support, set the options:
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- hardware.system76.darp76.soundVendorId
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- hardware.system76.darp76.soundSubsystemId
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You can copy these values directly from:
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- /sys/class/sound/hwC0D0/vendor_id
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- /sys/class/sound/hwC0D0/subsystem_id
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The headset audio fixup will not be applied without these values.
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Set these options to null to silence this warning.
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'';
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}
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# Apply the headset fixup patch from system76-driver, if the necessary
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# options have been provided.
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#
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# See occurrences of "darp" in:
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# https://github.com/pop-os/system76-driver/blob/master/system76driver/actions.py
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# https://github.com/pop-os/system76-driver/blob/master/system76driver/products.py
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(lib.mkIf soundSettingsAvailable {
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boot.extraModprobeConfig = ''
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options snd-hda-intel model=headset-mode-no-hp-mic patch=system76-audio-patch
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'';
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hardware.firmware = [
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(pkgs.writeTextFile {
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name = "system76-audio-patch";
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destination = "/lib/firmware/system76-audio-patch";
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text = ''
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[codec]
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${cfg.soundVendorId} ${cfg.soundSubsystemId} 0
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[pincfg]
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0x1a 0x01a1913c
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'';
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})
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];
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})
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];
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}
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