On Thu, 2010-11-11 at 06:02 +0800, Alan Stern wrote: > Rui: > > Why does CONFIG_ACPI_VIDEO depend on BACKLIGHT_CLASS_DEVICE? Doesn't > ACPI_VIDEO apply to any sort of video adapter, including plain old VGA > adapters attached to a non-LCD device? > There is an ACPI device node (an ACPI video bus device) for the VGA controller and another ACPI device node (an ACPI video output device) for the LCD display. And ACPI_VIDEO knows how to switch the backlight of this integrated LCD. :) thanks, rui -- 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
