vibrator PWM support
Michael 'Mickey' Lauer
mickey at openmoko.org
Sun Sep 9 12:39:08 CEST 2007
Javi Roman wrote:
> I've added PWM support for Neo1973 vibrator driver
> Nevertheless this code is not a very good solution, because it's a
> derivated code of gta01_bl.c and the final target is an abstraction of
> PWM timer code (i'm woking on that). Also the suspend code is not ended.
> On the other hand I request feedback because actually I don't know the
> good combination of prescaler+divider+counter value. The code shows
> empirical values, the vibrator works with:
echo 255 >> /sys/class/leds/gta01\:vibrator/brightness (99% duty cycle,
> full power)
echo 128 >> /sys/class/leds/gta01\:vibrator/brightness (50% duty cycle,
> medium power)
echo 0 >> /sys/class/leds/gta01\:vibrator/brightness (0% duty cycle, off power)
> Please let me know what's wrong, or some other kind of feedback.
> BTW, I wonder if it's better to create a new class driver for vibrator
> rather than led class.
Why? That would be a 100% duplicate, since the feature-set is entirely
the same. I'd rather rename the "LED class" "Indicator class" if
people have problems with the slightly misleading name.
Michael 'Mickey' Lauer | IT-Freelancer | http://www.vanille-media.de
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