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nixos/thinkfan: rewrite for 1.2 update

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Thinkfan underwent some major changes and the config file
is now based on YAML. This commit contains a number of changes:

- rewrite the module to output the new format;
- add a `settings` option, following RFC 0042[1];
- add fancy type-checking for the most critical options
- use upstream systemd units (which fix the resume issue)

[1]: https://github.com/NixOS/rfcs/blob/master/rfcs/0042-config-option.md
This commit is contained in:
rnhmjoj 2021-02-02 02:13:15 +01:00
parent 32e1eb3742
commit 02b872310d
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GPG key ID: BFBAF4C975F76450
1 changed files with 163 additions and 91 deletions
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254
nixos/modules/services/hardware/thinkfan.nix
View file

@ -5,50 +5,96 @@ with lib;
let
cfg = config.services.thinkfan;
configFile = pkgs.writeText "thinkfan.conf" ''
# ATTENTION: There is only very basic sanity checking on the configuration.
# That means you can set your temperature limits as insane as you like. You
# can do anything stupid, e.g. turn off your fan when your CPU reaches 70°C.
#
# That's why this program is called THINKfan: You gotta think for yourself.
#
######################################################################
#
# IBM/Lenovo Thinkpads (thinkpad_acpi, /proc/acpi/ibm)
# ====================================================
#
# IMPORTANT:
#
# To keep your HD from overheating, you have to specify a correction value for
# the sensor that has the HD's temperature. You need to do this because
# thinkfan uses only the highest temperature it can find in the system, and
# that'll most likely never be your HD, as most HDs are already out of spec
# when they reach 55 °C.
# Correction values are applied from left to right in the same order as the
# temperatures are read from the file.
#
# For example:
# tp_thermal /proc/acpi/ibm/thermal (0, 0, 10)
# will add a fixed value of 10 °C the 3rd value read from that file. Check out
# http://www.thinkwiki.org/wiki/Thermal_Sensors to find out how much you may
# want to add to certain temperatures.
settingsFormat = pkgs.formats.yaml { };
configFile = settingsFormat.generate "thinkfan.yaml" cfg.settings;
thinkfan = pkgs.thinkfan.override { inherit (cfg) smartSupport; };
${cfg.fan}
${cfg.sensors}
# fan-speed and temperature levels
levelType = with types;
let
tuple = ts: mkOptionType {
name = "tuple";
merge = mergeOneOption;
check = xs: all id (zipListsWith (t: x: t.check x) ts xs);
description = "tuple of" + concatMapStrings (t: " (${t.description})") ts;
};
level = ints.unsigned;
special = enum [ "level auto" "level full-speed" "level disengage" ];
in
tuple [ (either level special) level level ];
# Syntax:
# (LEVEL, LOW, HIGH)
# LEVEL is the fan level to use (0-7 with thinkpad_acpi)
# LOW is the temperature at which to step down to the previous level
# HIGH is the temperature at which to step up to the next level
# All numbers are integers.
#
# sensor or fan config
sensorType = name: types.submodule {
freeformType = types.attrsOf settingsFormat.type;
options = {
type = mkOption {
type = types.enum [ "hwmon" "atasmart" "tpacpi" "nvml" ];
description = ''
The ${name} type, can be
<literal>hwmon</literal> for standard ${name}s,
${cfg.levels}
<literal>atasmart</literal> to read the temperature via
S.M.A.R.T (requires smartSupport to be enabled),
<literal>tpacpi</literal> for the legacy thinkpac_acpi driver, or
<literal>nvml</literal> for the (proprietary) nVidia driver.
'';
};
query = mkOption {
type = types.str;
description = ''
The query string used to match one or more ${name}s: can be
a fullpath to the temperature file (single ${name}) or a fullpath
to a driver directory (multiple ${name}s).
<note><para>
When multiple ${name}s match, the query can be restricted using the
<option>name</option> or <option>indices</option> options.
</para></note>
'';
};
indices = mkOption {
type = with types; nullOr (listOf ints.unsigned);
default = null;
description = ''
A list of ${name}s to pick in case multiple ${name}s match the query.
<note><para>Indices start from 0.</para></note>
'';
};
} // optionalAttrs (name == "sensor") {
correction = mkOption {
type = with types; nullOr (listOf int);
default = null;
description = ''
A list of values to be added to the temperature of each sensor,
can be used to equalize small discrepancies in temperature ratings.
'';
};
};
};
# removes NixOS special and unused attributes
sensorToConf = { type, query, ... }@args:
(filterAttrs (k: v: v != null && !(elem k ["type" "query"])) args)
// { "${type}" = query; };
syntaxNote = name: ''
<note><para>
This section slightly departs from the thinkfan.conf syntax.
The type and path must be specified like this:
<literal>
type = "tpacpi";
query = "/proc/acpi/ibm/${name}";
</literal>
instead of a single declaration like:
<literal>
- tpacpi: /proc/acpi/ibm/${name}
</literal>
</para></note>
'';
thinkfan = pkgs.thinkfan.override { smartSupport = cfg.smartSupport; };
in {
options = {
@ -59,76 +105,93 @@ in {
type = types.bool;
default = false;
description = ''
Whether to enable thinkfan, fan controller for IBM/Lenovo ThinkPads.
Whether to enable thinkfan, a fan control program.
<note><para>
This module targets IBM/Lenovo thinkpads by default, for
other hardware you will have configure it more carefully.
</para></note>
'';
relatedPackages = [ "thinkfan" ];
};
smartSupport = mkOption {
type = types.bool;
default = false;
description = ''
Whether to build thinkfan with SMART support to read temperatures
Whether to build thinkfan with S.M.A.R.T. support to read temperatures
directly from hard disks.
'';
};
sensors = mkOption {
type = types.lines;
default = ''
tp_thermal /proc/acpi/ibm/thermal (0,0,10)
'';
description =''
thinkfan can read temperatures from three possible sources:
/proc/acpi/ibm/thermal
Which is provided by the thinkpad_acpi kernel
module (keyword tp_thermal)
/sys/class/hwmon/*/temp*_input
Which may be provided by any hwmon drivers (keyword
hwmon)
S.M.A.R.T. (requires smartSupport to be enabled)
Which reads the temperature directly from the hard
disk using libatasmart (keyword atasmart)
Multiple sensors may be added, in which case they will be
numbered in their order of appearance.
'';
type = types.listOf (sensorType "sensor");
default = [
{ type = "tpacpi";
query = "/proc/acpi/ibm/thermal";
}
];
description = ''
List of temperature sensors thinkfan will monitor.
'' + syntaxNote "thermal";
};
fan = mkOption {
type = types.str;
default = "tp_fan /proc/acpi/ibm/fan";
description =''
Specifies the fan we want to use.
On anything other than a Thinkpad you'll probably
use some PWM control file in /sys/class/hwmon.
A sysfs fan would be specified like this:
pwm_fan /sys/class/hwmon/hwmon2/device/pwm1
'';
fans = mkOption {
type = types.listOf (sensorType "fan");
default = [
{ type = "tpacpi";
query = "/proc/acpi/ibm/fan";
}
];
description = ''
List of fans thinkfan will control.
'' + syntaxNote "fan";
};
levels = mkOption {
type = types.lines;
default = ''
(0, 0, 55)
(1, 48, 60)
(2, 50, 61)
(3, 52, 63)
(6, 56, 65)
(7, 60, 85)
(127, 80, 32767)
'';
type = types.listOf levelType;
default = [
[0 0 55]
[1 48 60]
[2 50 61]
[3 52 63]
[6 56 65]
[7 60 85]
["level auto" 80 32767]
];
description = ''
(LEVEL, LOW, HIGH)
LEVEL is the fan level to use (0-7 with thinkpad_acpi).
[LEVEL LOW HIGH]
LEVEL is the fan level to use: it can be an integer (0-7 with thinkpad_acpi),
"level auto" (to keep the default firmware behavior), "level full-speed" or
"level disengage" (to run the fan as fast as possible).
LOW is the temperature at which to step down to the previous level.
HIGH is the temperature at which to step up to the next level.
All numbers are integers.
'';
};
extraArgs = mkOption {
type = types.listOf types.str;
default = [ ];
example = [ "-b" "0" ];
description = ''
A list of extra command line arguments to pass to thinkfan.
Check the thinkfan(1) manpage for available arguments.
'';
};
settings = mkOption {
type = types.attrsOf settingsFormat.type;
default = { };
description = ''
Thinkfan settings. Use this option to configure thinkfan
settings not exposed in a NixOS option or to bypass one.
Before changing this, read the <literal>thinkfan.conf(5)</literal>
manpage and take a look at the example config file at
<link xlink:href="https://github.com/vmatare/thinkfan/blob/master/examples/thinkfan.yaml"/>
'';
};
};
@ -138,12 +201,21 @@ in {
environment.systemPackages = [ thinkfan ];
systemd.services.thinkfan = {
description = "Thinkfan";
after = [ "basic.target" ];
wantedBy = [ "multi-user.target" ];
path = [ thinkfan ];
serviceConfig.ExecStart = "${thinkfan}/bin/thinkfan -n -c ${configFile}";
services.thinkfan.settings = mapAttrs (k: v: mkDefault v) {
sensors = map sensorToConf cfg.sensors;
fans = map sensorToConf cfg.fans;
levels = cfg.levels;
};
systemd.packages = [ thinkfan ];
systemd.services = {
thinkfan.environment.THINKFAN_ARGS = escapeShellArgs ([ "-c" configFile ] ++ cfg.extraArgs);
# must be added manually, see issue #81138
thinkfan.wantedBy = [ "multi-user.target" ];
thinkfan-wakeup.wantedBy = [ "sleep.target" ];
thinkfan-sleep.wantedBy = [ "sleep.target" ];
};
boot.extraModprobeConfig = "options thinkpad_acpi experimental=1 fan_control=1";