On Mon, Nov 22, 2010 at 10:17:00AM +0000, Richard Purdie wrote: > I also want to make sure you think this patch is going to scale with > multiple GPU output machines? Thats the main reason I've held off any > patch like this as it doesn't help solve that problem as far as I can > tell. Yes, we have the device parent information and I see later in the > patch series you ensure the backlight is registered against the > connector which is good. If you have an ACPI "firmware" control that you > say should always be preferred, how do we know which connector device > that corresponds to in the multiple output case? From that point of view > this model falls apart? The ACPI device will point at the correct PCI device. Associating it with the appropriate connector is theoretically possible in the case of open drivers, but I hadn't seen it as a high priority since (in practice) there's no situations where an ACPI interface will be able to control more than one backlight. -- 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
