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gpioled: document the invmode hint in gpioled(4)

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Signed-off-by: Stéphane Rochoy <stephane.rochoy@stormshield.eu>
Sponsored-by: Stormshield
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1805
This commit is contained in:
Stéphane Rochoy
2025-08-12 11:29:05 +02:00
committed by Warner Losh
parent 9ae3c3010a
commit 6a5c193a1a
1 changed files with 14 additions and 1 deletions
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share/man/man4/gpioled.4
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@@ -70,7 +70,20 @@ Which pin on the GPIO interface to map to this instance.
Please note that this mask should only ever have one bit set
(any other bits - i.e., pins - will be ignored).
.It Va hint.gpioled.%d.invert
If set to 1, the pin will be set to 0 to light the LED, and 1 to clear it.
Use pin inversion. If set to 1, the pin will be set to 0 to light the LED, and 1
to clear it.
.It Va hint.gpioled.%d.invmode
Whether or not to use hardware support when pin inversion is requested. Must be
one of:
.Bl -tag
.It Va auto
Use hardware pin inversion if available, else fallback to software pin
inversion. This is the default.
.It Va hw
Use hardware pin inversion.
.It Va sw
Use software pin inversion.
.El
.It Va hint.gpioled.%d.state
The initial state of the LED when the driver takes control over it.
If set to 1 or 0, the LED will be on or off correspondingly.