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58 lines
1.8 KiB
Nix
58 lines
1.8 KiB
Nix
{ config, lib, pkgs, ... }:
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# This, by default, boots the phone with the modem powered down.
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# In addition, the systemd service does not, by default, start the modem.
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{
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# Shut down the modem in early boot
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mobile.quirks.u-boot.additionalCommands = ''
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# Properly shut off EG25 by pulling up PWRKEY.
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gpio set 35
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sleep 1
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gpio clear 35
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'';
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# Ensure we have systemd tagging on the modem.
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# Probably is not needed.
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services.udev.extraRules =
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let
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path = "/devices/platform/soc/1c1b000.usb/*/net/wwan0";
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in ''
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ACTION=="add", DEVPATH=="${path}", TAG+="systemd"
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ACTION=="remove", DEVPATH=="${path}", TAG+="systemd"
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''
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;
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# This service, allows the user to start the modem using a systemd service.
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# In addition, the service status always reflects the current status of the
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# modem; whether it has been turned off or on using systemd or not.
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#
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# If you want it to be disabled by default on boot, use:
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#
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# systemd.services.modem-control.wantedBy = lib.mkForce [ "sys-devices-platform-soc-1c1b000.usb-usb3-3\\x2d1-3\\x2d1:1.4-net-wwan0.device" ];
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#
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systemd.services =
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let
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dotDeviceName = "sys-devices-platform-soc-1c1b000.usb-usb3-3\\x2d1-3\\x2d1:1.4-net-wwan0.device";
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in {
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"modem-control" = {
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bindsTo = [ dotDeviceName ];
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wantedBy = [ dotDeviceName "multi-user.target" ];
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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ExecStart = pkgs.writeShellScript "start-modem" ''
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echo 'Powering modem on...'
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echo 1 > /sys/class/modem-power/modem-power/device/powered
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'';
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ExecStop = pkgs.writeShellScript "stop-modem" ''
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echo 'Powering modem off...'
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echo 0 > /sys/class/modem-power/modem-power/device/powered
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'';
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};
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};
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};
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}
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