1# SPDX-License-Identifier: GPL-2.0 2config FB_OLPC_DCON 3 tristate "One Laptop Per Child Display CONtroller support" 4 depends on OLPC && FB && BROKEN 5 depends on I2C 6 depends on GPIO_CS5535 && ACPI 7 select BACKLIGHT_CLASS_DEVICE 8 help 9 In order to support very low power operation, the XO laptop uses a 10 secondary Display CONtroller, or DCON. This secondary controller 11 is present in the video pipeline between the primary display 12 controller (integrate into the processor or chipset) and the LCD 13 panel. It allows the main processor/display controller to be 14 completely powered off while still retaining an image on the display. 15 This controller is only available on OLPC platforms. Unless you have 16 one of these platforms, you will want to say 'N'. 17 18