Guennadi Liakhovetski <g.liakhovetski@xxxxxx> writes: >> Let me be even more precise about a usecase : >> - a user takes a picture with his smartphone >> - the same user then uses his phone to call his girlfriend >> - the girlfriend has a lot of things to say, it lasts for 1 hour >> In that case, the sensor _has_ to be switched off. > > Nice example, thanks! Ok, of course, we must not leave the poor girl with > her boyfriend's flat battery:-) Dear, of course not, imagine what she would do to him ! :) > I think we can put the camera to a low-power state in streamoff. But - not > power it off! This has to be done from system's PM functions. That means, from a sensor POV, through icd->stop_capture(). For my single mt9m111, it's fine by me, as the mt9m111 does have a powersave mode. Yet I'm wondering if there are sensors without that capability, with only one control (ie. one GPIO line) to switch them on and off ... > What was there on linux-pm about managing power of single devices?... Reference ? Cheers. -- Robert -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
