From 5fd769c2bf115c23670acbc54875717b177c7e0e Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 30 Mar 2020 17:17:37 -0700 Subject: [PATCH] ACPI: video: Docs update for "acpi_backlight" kernel parameter options Update the Documentation for "acpi_backlight" by adding 2 new options (native and none). Signed-off-by: Randy Dunlap Reviewed-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- Documentation/admin-guide/kernel-parameters.txt | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 4e3885e38179..457ca22bfc4b 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -22,11 +22,13 @@ default: 0 acpi_backlight= [HW,ACPI] - acpi_backlight=vendor - acpi_backlight=video - If set to vendor, prefer vendor specific driver + { vendor | video | native | none } + If set to vendor, prefer vendor-specific driver (e.g. thinkpad_acpi, sony_acpi, etc.) instead of the ACPI video.ko driver. + If set to video, use the ACPI video.ko driver. + If set to native, use the device's native backlight mode. + If set to none, disable the ACPI backlight interface. acpi_force_32bit_fadt_addr force FADT to use 32 bit addresses rather than the