[PATCH v3 1/2] leds: mt6360: Add LED driver for MT6360
pavel at ucw.cz
Thu Sep 10 16:25:10 EDT 2020
> > > 1. set FLED1 brightness
> > > # echo 1 > /sys/class/leds/white:flash1/flash_brightness
> > > 2. enable FLED1 strobe
> > > # echo 1 > /sys/class/leds/white:flash1/flash_strobe
> > > 3 . turn off FLED1 strobe (just used to gaurantee the strobe mode
> > > flash leds must be turned off)
> > > # echo 0 > /sys/class/leds/white:flash1/flash_strobe
> > I believe I'd preffer only exposing torch functionality in
> > /sys/class/leds. .. strobe can be supported using v4l2 APIs.
> Actually having LED flash class without strobe is pointless.
> If you looked at led_classdev_flash_register_ext() you would see that
> it fails with uninitialized strobe_set op. And V4L2 API for strobing
> flash calls strobe_set from LED flash class beneath.
> That was the idea behind LED and V4L2 flash API unification - there
> is one hardware driver needed, the V4L2 Flash layer just takes over
> control over it when needed.
I agree that one driver is enough.
But we should not need flash_strobe file in sysfs. Simply use V4L2 for
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