ref: 6901f0c40f4c72fe730a4daab3ae30f930a5e968
dir: /sys/man/1/reform/
.TH REFORM 1 .SH NAME audio, pm, shortcuts - MNT Reform 2 support utilities .SH SYNOPSIS .B reform/audio [ .B -1 ] [ .B -D ] [ .B -m .I mountpoint ] [ .B -s .I service ] .PP .B reform/pm [ .B -D ] [ .B -m .I mountpoint ] [ .B -s .I service ] .PP .B reform/shortcuts [ .B -l .I light_step ] [ .B -v .I vol_step ] .SH DESCRIPTION These programs provide support for certain functions of MNT Reform 2 computing device. Some of them also make controlling file systems available under .BR /dev . .PP .SS Audio .I audio initializes the DAC (Digital-to-Analog Converter) on the platform and provides a standard \fIaudio\fR(3) interface to control volume and other parameters. With .I -1 only the initialization is performed and the program exits immediately. .PP The following files are provided by the program: .TP .B audioctl Shows the current status .I (on or .I off ) of the three "outputs" - .BR master , .B hp and .BR spk . Each can be enabled, disabled or toggled, by writing a single line to the same file, consisting of the output name and the desired action - .I on , .I off or .I toggle , accordingly. .IP DAC can be reinitialized by writing a single .BR reset . .TP .B volume Provides an interface for volume control (see \fIaudio\fR(3)). For ease of use, .B volume supports relative adjustments by prefixing a number with a sign. \fImaster +1\fR, for example, will increase the volume on .B master by 1%, which is 0.5dB for this particular output. For .B hp and .B spk one percent is 1dB. .IP Enhanced stereo separation can be enabled by writing .BR 3d , followed by desired percentage of the effect. .SS Power and monitoring .I pm presents a file system consisting of the following files: .TP .B battery Returns attached battery array statistics in the same manner as \fIacpi\fR(8). .TP .B cputemp Exposes the current temperature reading of the CPU. .TP .B light Provides a way to control the backlight of the built-in LCD by writing \fIlcd [-+]N\fR, where .I N is expressed in percentage, either as an absolute value (0-100) or relative to the current brightness - by prefixing with a sign. Reading .B light returns the current brightness. .TP .B pmctl Reading .B pmctl gives the System Controller firmware version string, voltage (mV) of each cell and current(mA) of the battery array. .IP Writing .I power off to .B pmctl will turn off all power rails, which is what \fIfshalt\fR(8) does after halting the file systems. .SS Shortcuts .I shortcuts enables LCD brightness and audio volume adjustment via keyboard shortcuts. .PP The program uses Rio's .I kbdtap to function: .IP .EX reform/shortcuts </dev/kbdtap >/dev/kbdtap .EE .PP .I Super+F1/F2 decreases/increases LCD brightness, .I Super+F3/F4 decreases/increases "master" volume, .I Super+Escape (un)mutes the audio. Optionally, a single step amount can be set with .I -l for LCD light level (default is 5) and .I -v for volume (default is 3). Values can be negative to essentially swap .I F1 with .IR F2 . .SH SOURCE .B /sys/src/cmd/reform .SH SEE ALSO .IR audio (3) .SH HISTORY MNT Reform 2 support first appeared in 9front (August, 2022). .SH BUGS Only 44100Hz (default) and 48000Hz sample rates are supported with .BR audio , recording is not implemented. .PP .B Light was chosen as a shorter alternative to .BR brightness . In the future it might support controlling keyboard and trackball light levels. .PP Values displayed in the .B battery file are not precise, cell capacities are hardcoded in the System Controller firmware.