Re: [PATCH] LED control

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On Sat, 14 Mar 2009 12:59:23 +0100
Jean-Francois Moine <moinejf@xxxxxxx> wrote:

> +	    <entry><constant>V4L2_CID_LEDS</constant></entry>
> +	    <entry>integer</entry>
> +	    <entry>Switch on or off the LEDs or illuminators of the device.
> +In the control value, each LED may be coded in one bit (0: off, 1: on) or in
> +many bits (light intensity).</entry>
> +	  </row>
> +	  <row>

The idea of having some sort of control over the LEDs is interesting, but we
should have a better way of controlling it. If the LED may have more than one
bit, maybe the better would be to create more than one CID entry. Something like:

V4L2_CID_LED_POWER	- for showing that the camera is being used
V4L2_CID_LED_LIGHT	- for normal white light
V4L2_CID_LED_INFRARED	- for dark light, using infrared
...

This way a driver can enumberate what kind of leds are available, and get the
power intensity range for each individual one.

Cheers,
Mauro
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