5F61h – Local Flat Panel Support Function

This function supports local flat panel only features.

Note: Only Subfunctions 5h and 8h of the 5f61h interface are supported for the Embedded VBIOS.

5F61h, 05h – Get Configuration ID

This function is used to return the Configuration ID.

Note: This function is known as “Get Local Flat Panel Number” in the Desktop and Mobile Video BIOS. This function performs a similar purpose however, the configuration IDs have no pre-defined meaning. The Configuration ID is reported to the Intel^® EMGD.

Calling Registers:

AX = 5F61h, Local Flat Panel Support function

BH = 05h, Get Config ID Subfunction

Return Registers:

AX = Return Status (function not supported if AL != 5Fh):

= 005Fh, Function supported and successful

= 015Fh, Function supported but failed

BL = Config ID

5F61h, 08h - Set the LVDS Backlight Level

This function is used to handle the LVDS backlight level.

Note: To enable to LVDS backlight control functionality, ensure you configure the following attributes in the CED Attribute Settings page:

— Intensity (attribute #70) to your desired value.

— Inverter Frequency (attribute #71) based on your requirement.

— Backlight Method (attribute #72) to Legacy + PWM mode(1)

Calling Registers:

AX = 5F61h, Local Flat Panel Support function

BH = 08h, Set the LVDS backlight level Subfunction

BL = 0 – 255 (backlight level)

Return Registers:

AX = Return Status (function not supported if AL != 5Fh):

= 005Fh, Function supported and successful

= 015Fh, Function supported but failed