Hi, Do we have support for LED controllers which can handle patterns of different kinds ? I mean, currently, if we have an LED controller such as TPIC2810 [1] which can control 8 different leds and each LED corresponds to one bit on register 0x44, we could control leds by just "playing" a wave file on the controller and create easy patterns with that. AFAICT, in linux today we would have to register each of the 8 LEDs as a different LED and have driver magic to write the proper bits on register 0x44, that seems a bit overkill, specially when we want to make patterns: instead of writing 0xff we would have to write 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 separately and have the driver cache the previous results so we don't end up switching off other LEDs. IOW, what could be handled with a single write, currently needs 8. I wonder if there's any work happening to support these slightly more inteligent LED engines. regards [1] http://www.ti.com/product/tpic2810 ps: tpic2810 is probably the simplest example, lp551, lp5523 and others have even more advanced pattern engines which can even handle RGB leds. Currently the driver loads patterns as if it was a firmware blob and registers each of R, G and B components as separate LEDs. Each component also has its own brightness controls (something tpic2810 doesn't have, it's either on or off). -- balbi
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