Op 25 nov 2008, om 17:59 heeft Grazvydas Ignotas het volgende geschreven:
Hi, TWL4030 and compatibles have 2 pulse-width modulation (PWM) generators (PWM0 and PWM1). They are used for backlight control and charger LED in pandora board. I wasn't able to find any drivers for them in linux-omap tree. Is there anyone working on these? If not, what would be the proper way to expose them? May be as LED driver? I saw lcd_omap*evm.c just write to LED PWM registers over i2c to control backlight, I wonder if I should just do the same.
Regardless of what implementation you choose, it would be *great* if people used the backlight class for things like backlights. /sys/class/ backlight/<foo>/brightness is such a nice standard that lots and lots of usespace tools rely on it.
regards, Koen
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