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
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
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