On Wed, Mar 11, 2009 at 09:42:55AM +0800, Zhang Rui wrote: > The index value returned by _BQC is the index in the PCTG package. > if the _BCL package is in a reversed order, we can not use this index to > get the value in device->brightness->levels[]. > For example, if the current brightness is 0x64, _BQC returns 0 in this > case, but we can not translate this to value 0x14, we need a flag to > tell us that _BCL is reversed. > > But in the non-indexed case, _BQC always returns a percentage that can > be used directly by ACPI video driver, i.e. we don't need to parse > device->brightness->levels to get the real value. so we don't need to > check the device->brightness->flags._BCL_reversed bit. Ah, of course. Sorry, I should have got that. Thanks for the explanation! Acked-by: Matthew Garrett <mjg@xxxxxxxxxx> -- 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
