On Wed, Jul 29, 2009 at 05:05:24PM +0200, Pavel Machek wrote: > > No, I mean that the only default policy you could reasonably have in the > > kernel would be tying the backlight directly to the ALS. And that sucks. > > You need some degree of smoothing, and that's a job better left to > > userspace. > > How would that be done? Wake up userspace 100times a second so it can > read an integer and ardd it to running average? I don't think you'd need more than once a second, possibly modified by the size of the change since the last measurement. Response doesn't need to be immediate. > Is ALS device stupid sensor, or can it do some smoothing/watermarks > itself? Generally stupid. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
