Teach backlight(9) to send brightness changes to devd(8), so one does
not need to poll for changes with backlight(8).
Output format:
!system=brightness subsystem=backlight0 type=change notify=42
Details
Details
- build a kernel
- run cat /var/run/devd.seqpacket.pipe | grep brightness
- change the background brightness using backlight(8)
Diff Detail
Diff Detail
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Event Timeline
| sys/dev/backlight/backlight.c | ||
|---|---|---|
| 88 | So why not use device_get_nameunit(sc->dev) here? | |
| sys/dev/backlight/backlight.c | ||
|---|---|---|
| 88 |
It's weird. When I change it to devctl_notify("brightness", device_get_nameunit(sc->dev),
"change", notify_buf);I get drmn0 and not backlight0 as value for subsystem. !system=brightness subsystem=drmn0 type=change notify=19 | |