# SPDX-License-Identifier: GPL-2.0 config [31mCONFIG_FB_OLPC_DCON[0m tristate "One Laptop Per Child Display CONtroller support" depends on [31mCONFIG_OLPC[0m && [31mCONFIG_FB[0m depends on [31mCONFIG_I2C[0m depends on ([31mCONFIG_GPIO_CS5535[0m || [31mCONFIG_GPIO_CS5535[0m=n) select [31mCONFIG_BACKLIGHT_CLASS_DEVICE[0m help In order to support very low power operation, the XO laptop uses a secondary Display CONtroller, or DCON. This secondary controller is present in the video pipeline between the primary display controller (integrate into the processor or chipset) and the LCD panel. It allows the main processor/display controller to be completely powered off while still retaining an image on the display. This controller is only available on [31mCONFIG_OLPC[0m platforms. Unless you have one of these platforms, you will want to say 'N'. config [31mCONFIG_FB_OLPC_DCON_1[0m bool "OLPC XO-1 DCON support" depends on [31mCONFIG_FB_OLPC_DCON[0m && [31mCONFIG_GPIO_CS5535[0m default y help Enable support for the DCON in XO-1 model laptops. The kernel communicates with the DCON using model-specific code. If you have an XO-1 (or if you're unsure what model you have), you should say 'Y'. config [31mCONFIG_FB_OLPC_DCON_1_5[0m bool "OLPC XO-1.5 DCON support" depends on [31mCONFIG_FB_OLPC_DCON[0m && [31mCONFIG_ACPI[0m default y help Enable support for the DCON in XO-1.5 model laptops. The kernel communicates with the DCON using model-specific code. If you have an XO-1.5 (or if you're unsure what model you have), you should say 'Y'. |