ACPI video: if no ACPI backlight support, use vendor drivers

[linux-2.6-omap-h63xx.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index c86c074597129a5b4434b0e35c432a0a28636b11..dd5013f974d8263b937ace38e5e0424bb4aa0617 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -198,6 +198,18 @@ and is between 256 and 4096 characters. It is defined in the file
                        that require a timer override, but don't have
                        HPET
 
+       acpi_backlight= [HW,ACPI]
+                       acpi_backlight=vendor
+                       acpi_backlight=video
+                       If set to vendor, prefer vendor specific driver
+                       (e.g. thinkpad_acpi, sony_acpi, etc.) instead
+                       of the ACPI video.ko driver.
+
+       acpi_display_output=    [HW,ACPI]
+                       acpi_display_output=vendor
+                       acpi_display_output=video
+                       See above.
+
        acpi.debug_layer=       [HW,ACPI]
                        Format: <int>
                        Each bit of the <int> indicates an ACPI debug layer,