On Thu, 03 Dec 2009, Zhang Rui wrote: > For example, device /sys/class/backlight/panel0 is created the first > time a backlight_ops for this display is registered. > And create the symbol link from the backlight class device to "physical > device" (device that invokes backlight_device_register) in the backlight > class device driver, if we really need it. > Remove and recreate a link pointing to the new physical device when the > backlight mode is changed. FWIW, I agree the above solution is simple enough and quite good enough. I just have absolutely _NO_ idea whatsoever how a platform driver can ask the PCI or APCI layer "where is the video device driving the LVDS panel so that I can bind to it"... -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh -- 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
