Re: [PATCH] input: extend EV_LED



Pavel Machek <pavel@xxxxxx> wrote:

Hi!

I do not know the LED subsystem in detail, but I do not
know
any possibility to access the i8042 from different
subsystem
than the input subsystem.

What do you think and recommend?

I think you need to use leds framework for what you are
trying to do.

I'm actually not sure if led framework can do that. It was
designed
for leds on gpios, and handles blinking itself.

But he could export two leds :-).

Hi,

what do you mean about two leds? The first one would be
off/0.5Hz and the other off/1Hz?

I read in linux/Documentation/led-class.txt the following:

| Some leds can be programmed to flash in hardware. As this
isn't a generic
| LED device property, this should be exported as a device
specific sysfs
| attribute rather than part of the class if this
functionality is required.

Does it mean that neither the input subsystem nor the led
subsystem is designed for hardware acelerated blinking leds?
Is there any usual way what attribute a hw accelerated
blinking LED_MAIL should export?

NMarci

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