50 	if (!strcmp("native", acpi_video_backlight_string))  in acpi_video_parse_cmdline()
273 	 * native backlight causes a regression where backlight does not work
311 	/* The native backlight controls do not work on some older machines */
413 	/* Non win8 machines which need native backlight nevertheless */
694 static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native)  in __acpi_video_get_backlight_type()  argument
713 	if (native)  in __acpi_video_get_backlight_type()
735 	/* Chromebooks should always prefer native backlight control. */  in __acpi_video_get_backlight_type()
739 	/* On systems with ACPI video use either native or ACPI video. */  in __acpi_video_get_backlight_type()
744 		 * for win8 and native brightness ctl is available, use that.  in __acpi_video_get_backlight_type()
746 		 * The native check deliberately is inside the if acpi-video  in __acpi_video_get_backlight_type()
747 		 * block on older devices without acpi-video support native  in __acpi_video_get_backlight_type()
770 	 * a native backlight is available.  in acpi_video_backlight_use_native()
778 	 * models only have a native backlight control.  in acpi_video_backlight_use_native()