M doc/guix.texi => doc/guix.texi +505 -0
@@ 216,6 216,7 @@ Services
* VPN Services:: VPN daemons.
* Network File System:: NFS related services.
* Continuous Integration:: The Cuirass service.
+* Power management Services:: The TLP tool.
* Miscellaneous Services:: Other services.
Defining Services
@@ 8451,6 8452,7 @@ declaration.
* VPN Services:: VPN daemons.
* Network File System:: NFS related services.
* Continuous Integration:: The Cuirass service.
+* Power management Services:: The TLP tool.
* Miscellaneous Services:: Other services.
@end menu
@@ 13708,6 13710,509 @@ The Cuirass package to use.
@end table
@end deftp
+@node Power management Services
+@subsubsection Power management Services
+
+@cindex power management with TLP
+The @code{(gnu services pm)} module provides a Guix service definition
+for the Linux power management tool TLP.
+
+TLP enables various powersaving modes in userspace and kernel.
+Contrary to @code{upower-service}, it is not a passive,
+monitoring tool, as it will apply custom settings each time a new power
+source is detected. More information can be found at
+@uref{http://linrunner.de/en/tlp/tlp.html, TLP home page}.
+
+@deffn {Scheme Variable} tlp-service-type
+The service type for the TLP tool. Its value should be a valid
+TLP configuration (see below). For example:
+@example
+(service tlp-service-type (tlp-configuration))
+@end example
+@end deffn
+
+By default TLP does not need much configuration but most TLP parameters
+can be tweaked using @code{tlp-configuration}.
+
+Each parameter definition is preceded by its type; for example,
+@samp{boolean foo} indicates that the @code{foo} parameter
+should be specified as a boolean. Types starting with
+@code{maybe-} denote parameters that won't show up in TLP config file
+when their value is @code{'disabled}.
+
+@c The following documentation was initially generated by
+@c (generate-tlp-documentation) in (gnu services pm). Manually maintained
+@c documentation is better, so we shouldn't hesitate to edit below as
+@c needed. However if the change you want to make to this documentation
+@c can be done in an automated way, it's probably easier to change
+@c (generate-documentation) than to make it below and have to deal with
+@c the churn as TLP updates.
+
+Available @code{tlp-configuration} fields are:
+
+@deftypevr {@code{tlp-configuration} parameter} package tlp
+The TLP package.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} boolean tlp-enable?
+Set to true if you wish to enable TLP.
+
+Defaults to @samp{#t}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string tlp-default-mode
+Default mode when no power supply can be detected. Alternatives are AC
+and BAT.
+
+Defaults to @samp{"AC"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} non-negative-integer disk-idle-secs-on-ac
+Number of seconds Linux kernel has to wait after the disk goes idle,
+before syncing on AC.
+
+Defaults to @samp{0}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} non-negative-integer disk-idle-secs-on-bat
+Same as @code{disk-idle-ac} but on BAT mode.
+
+Defaults to @samp{2}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} non-negative-integer max-lost-work-secs-on-ac
+Dirty pages flushing periodicity, expressed in seconds.
+
+Defaults to @samp{15}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} non-negative-integer max-lost-work-secs-on-bat
+Same as @code{max-lost-work-secs-on-ac} but on BAT mode.
+
+Defaults to @samp{60}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-space-separated-string-list cpu-scaling-governor-on-ac
+CPU frequency scaling governor on AC mode. With intel_pstate driver,
+alternatives are powersave and performance. With acpi-cpufreq driver,
+alternatives are ondemand, powersave, performance and conservative.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-space-separated-string-list cpu-scaling-governor-on-bat
+Same as @code{cpu-scaling-governor-on-ac} but on BAT mode.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-non-negative-integer cpu-scaling-min-freq-on-ac
+Set the min available frequency for the scaling governor on AC.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-non-negative-integer cpu-scaling-max-freq-on-ac
+Set the max available frequency for the scaling governor on AC.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-non-negative-integer cpu-scaling-min-freq-on-bat
+Set the min available frequency for the scaling governor on BAT.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-non-negative-integer cpu-scaling-max-freq-on-bat
+Set the max available frequency for the scaling governor on BAT.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-non-negative-integer cpu-min-perf-on-ac
+Limit the min P-state to control the power dissipation of the CPU, in AC
+mode. Values are stated as a percentage of the available performance.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-non-negative-integer cpu-max-perf-on-ac
+Limit the max P-state to control the power dissipation of the CPU, in AC
+mode. Values are stated as a percentage of the available performance.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-non-negative-integer cpu-min-perf-on-bat
+Same as @code{cpu-min-perf-on-ac} on BAT mode.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-non-negative-integer cpu-max-perf-on-bat
+Same as @code{cpu-max-perf-on-ac} on BAT mode.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-boolean cpu-boost-on-ac?
+Enable CPU turbo boost feature on AC mode.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-boolean cpu-boost-on-bat?
+Same as @code{cpu-boost-on-ac?} on BAT mode.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} boolean sched-powersave-on-ac?
+Allow Linux kernel to minimize the number of CPU cores/hyper-threads
+used under light load conditions.
+
+Defaults to @samp{#f}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} boolean sched-powersave-on-bat?
+Same as @code{sched-powersave-on-ac?} but on BAT mode.
+
+Defaults to @samp{#t}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} boolean nmi-watchdog?
+Enable Linux kernel NMI watchdog.
+
+Defaults to @samp{#f}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-string phc-controls
+For Linux kernels with PHC patch applied, change CPU voltages. An
+example value would be @samp{"F:V F:V F:V F:V"}.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string energy-perf-policy-on-ac
+Set CPU performance versus energy saving policy on AC. Alternatives are
+performance, normal, powersave.
+
+Defaults to @samp{"performance"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string energy-perf-policy-on-bat
+Same as @code{energy-perf-policy-ac} but on BAT mode.
+
+Defaults to @samp{"powersave"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} space-separated-string-list disks-devices
+Hard disk devices.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} space-separated-string-list disk-apm-level-on-ac
+Hard disk advanced power management level.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} space-separated-string-list disk-apm-level-on-bat
+Same as @code{disk-apm-bat} but on BAT mode.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-space-separated-string-list disk-spindown-timeout-on-ac
+Hard disk spin down timeout. One value has to be specified for each
+declared hard disk.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-space-separated-string-list disk-spindown-timeout-on-bat
+Same as @code{disk-spindown-timeout-on-ac} but on BAT mode.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-space-separated-string-list disk-iosched
+Select IO scheduler for disk devices. One value has to be specified for
+each declared hard disk. Example alternatives are cfq, deadline and
+noop.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string sata-linkpwr-on-ac
+SATA aggressive link power management (ALPM) level. Alternatives are
+min_power, medium_power, max_performance.
+
+Defaults to @samp{"max_performance"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string sata-linkpwr-on-bat
+Same as @code{sata-linkpwr-ac} but on BAT mode.
+
+Defaults to @samp{"min_power"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-string sata-linkpwr-blacklist
+Exclude specified SATA host devices for link power management.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-on-off-boolean ahci-runtime-pm-on-ac?
+Enable Runtime Power Management for AHCI controller and disks on AC
+mode.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-on-off-boolean ahci-runtime-pm-on-bat?
+Same as @code{ahci-runtime-pm-on-ac} on BAT mode.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} non-negative-integer ahci-runtime-pm-timeout
+Seconds of inactivity before disk is suspended.
+
+Defaults to @samp{15}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string pcie-aspm-on-ac
+PCI Express Active State Power Management level. Alternatives are
+default, performance, powersave.
+
+Defaults to @samp{"performance"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string pcie-aspm-on-bat
+Same as @code{pcie-aspm-ac} but on BAT mode.
+
+Defaults to @samp{"powersave"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string radeon-power-profile-on-ac
+Radeon graphics clock speed level. Alternatives are low, mid, high,
+auto, default.
+
+Defaults to @samp{"high"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string radeon-power-profile-on-bat
+Same as @code{radeon-power-ac} but on BAT mode.
+
+Defaults to @samp{"low"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string radeon-dpm-state-on-ac
+Radeon dynamic power management method (DPM). Alternatives are battery,
+performance.
+
+Defaults to @samp{"performance"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string radeon-dpm-state-on-bat
+Same as @code{radeon-dpm-state-ac} but on BAT mode.
+
+Defaults to @samp{"battery"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string radeon-dpm-perf-level-on-ac
+Radeon DPM performance level. Alternatives are auto, low, high.
+
+Defaults to @samp{"auto"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string radeon-dpm-perf-level-on-bat
+Same as @code{radeon-dpm-perf-ac} but on BAT mode.
+
+Defaults to @samp{"auto"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} on-off-boolean wifi-pwr-on-ac?
+Wifi power saving mode.
+
+Defaults to @samp{#f}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} on-off-boolean wifi-pwr-on-bat?
+Same as @code{wifi-power-ac?} but on BAT mode.
+
+Defaults to @samp{#t}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} y-n-boolean wol-disable?
+Disable wake on LAN.
+
+Defaults to @samp{#t}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} non-negative-integer sound-power-save-on-ac
+Timeout duration in seconds before activating audio power saving on
+Intel HDA and AC97 devices. A value of 0 disables power saving.
+
+Defaults to @samp{0}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} non-negative-integer sound-power-save-on-bat
+Same as @code{sound-powersave-ac} but on BAT mode.
+
+Defaults to @samp{1}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} y-n-boolean sound-power-save-controller?
+Disable controller in powersaving mode on Intel HDA devices.
+
+Defaults to @samp{#t}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} boolean bay-poweroff-on-bat?
+Enable optical drive in UltraBay/MediaBay on BAT mode. Drive can be
+powered on again by releasing (and reinserting) the eject lever or by
+pressing the disc eject button on newer models.
+
+Defaults to @samp{#f}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string bay-device
+Name of the optical drive device to power off.
+
+Defaults to @samp{"sr0"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string runtime-pm-on-ac
+Runtime Power Management for PCI(e) bus devices. Alternatives are on
+and auto.
+
+Defaults to @samp{"on"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} string runtime-pm-on-bat
+Same as @code{runtime-pm-ac} but on BAT mode.
+
+Defaults to @samp{"auto"}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} boolean runtime-pm-all?
+Runtime Power Management for all PCI(e) bus devices, except blacklisted
+ones.
+
+Defaults to @samp{#t}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-space-separated-string-list runtime-pm-blacklist
+Exclude specified PCI(e) devices adresses from Runtime Power Management.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} space-separated-string-list runtime-pm-driver-blacklist
+Exclude PCI(e) devices assigned to the specified drivers from Runtime
+Power Management.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} boolean usb-autosuspend?
+Enable USB autosuspend feature.
+
+Defaults to @samp{#t}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-string usb-blacklist
+Exclude specified devices from USB autosuspend.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} boolean usb-blacklist-wwan?
+Exclude WWAN devices from USB autosuspend.
+
+Defaults to @samp{#t}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-string usb-whitelist
+Include specified devices into USB autosuspend, even if they are already
+excluded by the driver or via @code{usb-blacklist-wwan?}.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} maybe-boolean usb-autosuspend-disable-on-shutdown?
+Enable USB autosuspend before shutdown.
+
+Defaults to @samp{disabled}.
+
+@end deftypevr
+
+@deftypevr {@code{tlp-configuration} parameter} boolean restore-device-state-on-startup?
+Restore radio device state (bluetooth, wifi, wwan) from previous
+shutdown on system startup.
+
+Defaults to @samp{#f}.
+
+@end deftypevr
+
@node Miscellaneous Services
@subsubsection Miscellaneous Services
M gnu/local.mk => gnu/local.mk +2 -0
@@ 10,6 10,7 @@
# Copyright © 2016, 2017 Ricardo Wurmus <rekado@elephly.net>
# Copyright © 2016 Ben Woodcroft <donttrustben@gmail.com>
# Copyright © 2017 Clément Lassieur <clement@lassieur.org>
+# Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
#
# This file is part of GNU Guix.
#
@@ 422,6 423,7 @@ GNU_SYSTEM_MODULES = \
%D%/services/nfs.scm \
%D%/services/shepherd.scm \
%D%/services/herd.scm \
+ %D%/services/pm.scm \
%D%/services/sddm.scm \
%D%/services/spice.scm \
%D%/services/ssh.scm \
A gnu/services/pm.scm => gnu/services/pm.scm +404 -0
@@ 0,0 1,404 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software: you can redistribute it and/or modify
+;;; it under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation, either version 3 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu services pm)
+ #:use-module (guix gexp)
+ #:use-module (guix packages)
+ #:use-module (guix records)
+ #:use-module (gnu packages linux)
+ #:use-module (gnu services)
+ #:use-module (gnu services base)
+ #:use-module (gnu services configuration)
+ #:use-module (gnu services shepherd)
+ #:use-module (gnu system shadow)
+ #:export (tlp-service-type
+ tlp-configuration))
+
+(define (uglify-field-name field-name)
+ (let ((str (symbol->string field-name)))
+ (string-join (string-split
+ (string-upcase
+ (if (string-suffix? "?" str)
+ (substring str 0 (1- (string-length str)))
+ str))
+ #\-)
+ "_")))
+
+(define (serialize-field field-name val)
+ (format #t "~a=~a\n" (uglify-field-name field-name) val))
+
+(define (serialize-boolean field-name val)
+ (serialize-field field-name (if val "1" "0")))
+(define-maybe boolean)
+
+(define (serialize-string field-name val)
+ (serialize-field field-name val))
+(define-maybe string)
+
+(define (space-separated-string-list? val)
+ (and (list? val)
+ (and-map (lambda (x)
+ (and (string? x) (not (string-index x #\space))))
+ val)))
+(define (serialize-space-separated-string-list field-name val)
+ (serialize-field field-name
+ (format #f "~s"
+ (string-join val " "))))
+(define-maybe space-separated-string-list)
+
+(define (non-negative-integer? val)
+ (and (exact-integer? val) (not (negative? val))))
+(define (serialize-non-negative-integer field-name val)
+ (serialize-field field-name val))
+(define-maybe non-negative-integer)
+
+(define (on-off-boolean? val)
+ (boolean? val))
+(define (serialize-on-off-boolean field-name val)
+ (serialize-field field-name (if val "on" "off")))
+(define-maybe on-off-boolean)
+
+(define (y-n-boolean? val)
+ (boolean? val))
+(define (serialize-y-n-boolean field-name val)
+ (serialize-field field-name (if val "Y" "N")))
+
+(define-configuration tlp-configuration
+ (tlp
+ (package tlp)
+ "The TLP package.")
+
+ (tlp-enable?
+ (boolean #t)
+ "Set to true if you wish to enable TLP.")
+
+ (tlp-default-mode
+ (string "AC")
+ "Default mode when no power supply can be detected. Alternatives are
+AC and BAT.")
+
+ (disk-idle-secs-on-ac
+ (non-negative-integer 0)
+ "Number of seconds Linux kernel has to wait after the disk goes idle,
+before syncing on AC.")
+
+ (disk-idle-secs-on-bat
+ (non-negative-integer 2)
+ "Same as @code{disk-idle-ac} but on BAT mode.")
+
+ (max-lost-work-secs-on-ac
+ (non-negative-integer 15)
+ "Dirty pages flushing periodicity, expressed in seconds.")
+
+ (max-lost-work-secs-on-bat
+ (non-negative-integer 60)
+ "Same as @code{max-lost-work-secs-on-ac} but on BAT mode.")
+
+ (cpu-scaling-governor-on-ac
+ (maybe-space-separated-string-list 'disabled)
+ "CPU frequency scaling governor on AC mode. With intel_pstate
+driver, alternatives are powersave and performance. With acpi-cpufreq driver,
+alternatives are ondemand, powersave, performance and conservative.")
+
+ (cpu-scaling-governor-on-bat
+ (maybe-space-separated-string-list 'disabled)
+ "Same as @code{cpu-scaling-governor-on-ac} but on BAT mode.")
+
+ (cpu-scaling-min-freq-on-ac
+ (maybe-non-negative-integer 'disabled)
+ "Set the min available frequency for the scaling governor on AC.")
+
+ (cpu-scaling-max-freq-on-ac
+ (maybe-non-negative-integer 'disabled)
+ "Set the max available frequency for the scaling governor on AC.")
+
+ (cpu-scaling-min-freq-on-bat
+ (maybe-non-negative-integer 'disabled)
+ "Set the min available frequency for the scaling governor on BAT.")
+
+ (cpu-scaling-max-freq-on-bat
+ (maybe-non-negative-integer 'disabled)
+ "Set the max available frequency for the scaling governor on BAT.")
+
+ (cpu-min-perf-on-ac
+ (maybe-non-negative-integer 'disabled)
+ "Limit the min P-state to control the power dissipation of the CPU,
+in AC mode. Values are stated as a percentage of the available performance.")
+
+ (cpu-max-perf-on-ac
+ (maybe-non-negative-integer 'disabled)
+ "Limit the max P-state to control the power dissipation of the CPU,
+in AC mode. Values are stated as a percentage of the available performance.")
+
+ (cpu-min-perf-on-bat
+ (maybe-non-negative-integer 'disabled)
+ "Same as @code{cpu-min-perf-on-ac} on BAT mode.")
+
+ (cpu-max-perf-on-bat
+ (maybe-non-negative-integer 'disabled)
+ "Same as @code{cpu-max-perf-on-ac} on BAT mode.")
+
+ (cpu-boost-on-ac?
+ (maybe-boolean 'disabled)
+ "Enable CPU turbo boost feature on AC mode.")
+
+ (cpu-boost-on-bat?
+ (maybe-boolean 'disabled)
+ "Same as @code{cpu-boost-on-ac?} on BAT mode.")
+
+ (sched-powersave-on-ac?
+ (boolean #f)
+ "Allow Linux kernel to minimize the number of CPU cores/hyper-threads
+used under light load conditions.")
+
+ (sched-powersave-on-bat?
+ (boolean #t)
+ "Same as @code{sched-powersave-on-ac?} but on BAT mode.")
+
+ (nmi-watchdog?
+ (boolean #f)
+ "Enable Linux kernel NMI watchdog.")
+
+ (phc-controls
+ (maybe-string 'disabled)
+ "For Linux kernels with PHC patch applied, change CPU voltages.
+An example value would be @samp{\"F:V F:V F:V F:V\"}.")
+
+ (energy-perf-policy-on-ac
+ (string "performance")
+ "Set CPU performance versus energy saving policy on AC. Alternatives are
+performance, normal, powersave.")
+
+ (energy-perf-policy-on-bat
+ (string "powersave")
+ "Same as @code{energy-perf-policy-ac} but on BAT mode.")
+
+ (disks-devices
+ (space-separated-string-list '("sda"))
+ "Hard disk devices.")
+
+ (disk-apm-level-on-ac
+ (space-separated-string-list '("254" "254"))
+ "Hard disk advanced power management level.")
+
+ (disk-apm-level-on-bat
+ (space-separated-string-list '("128" "128"))
+ "Same as @code{disk-apm-bat} but on BAT mode.")
+
+ (disk-spindown-timeout-on-ac
+ (maybe-space-separated-string-list 'disabled)
+ "Hard disk spin down timeout. One value has to be specified for
+each declared hard disk.")
+
+ (disk-spindown-timeout-on-bat
+ (maybe-space-separated-string-list 'disabled)
+ "Same as @code{disk-spindown-timeout-on-ac} but on BAT mode.")
+
+ (disk-iosched
+ (maybe-space-separated-string-list 'disabled)
+ "Select IO scheduler for disk devices. One value has to be specified
+for each declared hard disk. Example alternatives are cfq, deadline and noop.")
+
+ (sata-linkpwr-on-ac
+ (string "max_performance")
+ "SATA aggressive link power management (ALPM) level. Alternatives are
+min_power, medium_power, max_performance.")
+
+ (sata-linkpwr-on-bat
+ (string "min_power")
+ "Same as @code{sata-linkpwr-ac} but on BAT mode.")
+
+ (sata-linkpwr-blacklist
+ (maybe-string 'disabled)
+ "Exclude specified SATA host devices for link power management.")
+
+ (ahci-runtime-pm-on-ac?
+ (maybe-on-off-boolean 'disabled)
+ "Enable Runtime Power Management for AHCI controller and disks
+on AC mode.")
+
+ (ahci-runtime-pm-on-bat?
+ (maybe-on-off-boolean 'disabled)
+ "Same as @code{ahci-runtime-pm-on-ac} on BAT mode.")
+
+ (ahci-runtime-pm-timeout
+ (non-negative-integer 15)
+ "Seconds of inactivity before disk is suspended.")
+
+ (pcie-aspm-on-ac
+ (string "performance")
+ "PCI Express Active State Power Management level. Alternatives are
+default, performance, powersave.")
+
+ (pcie-aspm-on-bat
+ (string "powersave")
+ "Same as @code{pcie-aspm-ac} but on BAT mode.")
+
+ (radeon-power-profile-on-ac
+ (string "high")
+ "Radeon graphics clock speed level. Alternatives are
+low, mid, high, auto, default.")
+
+ (radeon-power-profile-on-bat
+ (string "low")
+ "Same as @code{radeon-power-ac} but on BAT mode.")
+
+ (radeon-dpm-state-on-ac
+ (string "performance")
+ "Radeon dynamic power management method (DPM). Alternatives are
+battery, performance.")
+
+ (radeon-dpm-state-on-bat
+ (string "battery")
+ "Same as @code{radeon-dpm-state-ac} but on BAT mode.")
+
+ (radeon-dpm-perf-level-on-ac
+ (string "auto")
+ "Radeon DPM performance level. Alternatives are
+auto, low, high.")
+
+ (radeon-dpm-perf-level-on-bat
+ (string "auto")
+ "Same as @code{radeon-dpm-perf-ac} but on BAT mode.")
+
+ (wifi-pwr-on-ac?
+ (on-off-boolean #f)
+ "Wifi power saving mode.")
+
+ (wifi-pwr-on-bat?
+ (on-off-boolean #t)
+ "Same as @code{wifi-power-ac?} but on BAT mode.")
+
+ (wol-disable?
+ (y-n-boolean #t)
+ "Disable wake on LAN.")
+
+ (sound-power-save-on-ac
+ (non-negative-integer 0)
+ "Timeout duration in seconds before activating audio power saving
+ on Intel HDA and AC97 devices. A value of 0 disables power saving.")
+
+ (sound-power-save-on-bat
+ (non-negative-integer 1)
+ "Same as @code{sound-powersave-ac} but on BAT mode.")
+
+ (sound-power-save-controller?
+ (y-n-boolean #t)
+ "Disable controller in powersaving mode on Intel HDA devices.")
+
+ (bay-poweroff-on-bat?
+ (boolean #f)
+ "Enable optical drive in UltraBay/MediaBay on BAT mode.
+Drive can be powered on again by releasing (and reinserting) the eject lever
+or by pressing the disc eject button on newer models.")
+
+ (bay-device
+ (string "sr0")
+ "Name of the optical drive device to power off.")
+
+ (runtime-pm-on-ac
+ (string "on")
+ "Runtime Power Management for PCI(e) bus devices. Alternatives are
+on and auto.")
+
+ (runtime-pm-on-bat
+ (string "auto")
+ "Same as @code{runtime-pm-ac} but on BAT mode.")
+
+ (runtime-pm-all?
+ (boolean #t)
+ "Runtime Power Management for all PCI(e) bus devices, except
+blacklisted ones.")
+
+ (runtime-pm-blacklist
+ (maybe-space-separated-string-list 'disabled)
+ "Exclude specified PCI(e) devices adresses from Runtime Power Management.")
+
+ (runtime-pm-driver-blacklist
+ (space-separated-string-list '("radeon" "nouveau"))
+ "Exclude PCI(e) devices assigned to the specified drivers from
+Runtime Power Management.")
+
+ (usb-autosuspend?
+ (boolean #t)
+ "Enable USB autosuspend feature.")
+
+ (usb-blacklist
+ (maybe-string 'disabled)
+ "Exclude specified devices from USB autosuspend.")
+
+ (usb-blacklist-wwan?
+ (boolean #t)
+ "Exclude WWAN devices from USB autosuspend.")
+
+ (usb-whitelist
+ (maybe-string 'disabled)
+ "Include specified devices into USB autosuspend, even if they are
+already excluded by the driver or via @code{usb-blacklist-wwan?}.")
+
+ (usb-autosuspend-disable-on-shutdown?
+ (maybe-boolean 'disabled)
+ "Enable USB autosuspend before shutdown.")
+
+ (restore-device-state-on-startup?
+ (boolean #f)
+ "Restore radio device state (bluetooth, wifi, wwan) from previous
+shutdown on system startup."))
+
+
+(define (tlp-shepherd-service config)
+ (let* ((tlp-bin (file-append
+ (tlp-configuration-tlp config) "/bin/tlp"))
+ (tlp-action (lambda args
+ #~(lambda _
+ (zero? (system* #$tlp-bin #$@args))))))
+ (list (shepherd-service
+ (documentation "Run TLP script.")
+ (provision '(tlp))
+ (requirement '(user-processes))
+ (start (tlp-action "init" "start"))
+ (stop (tlp-action "init" "stop"))))))
+
+(define (tlp-activation config)
+ (let* ((config-str (with-output-to-string
+ (lambda ()
+ (serialize-configuration
+ config
+ tlp-configuration-fields))))
+ (config-file (plain-file "tlp" config-str)))
+ (with-imported-modules '((guix build utils))
+ #~(begin
+ (use-modules (guix build utils))
+ (copy-file #$config-file "/etc/tlp")))))
+
+(define tlp-service-type
+ (service-type
+ (name 'tlp)
+ (extensions
+ (list
+ (service-extension shepherd-root-service-type
+ tlp-shepherd-service)
+ (service-extension udev-service-type
+ (compose list tlp-configuration-tlp))
+ (service-extension activation-service-type
+ tlp-activation)))))
+
+(define (generate-tlp-documentation)
+ (generate-documentation
+ `((tlp-configuration ,tlp-configuration-fields))
+ 'tlp-configuration))