efi/gop: Allow automatically choosing the best mode
Add the ability to automatically pick the highest resolution video mode
(defined as the product of vertical and horizontal resolution) by using
a command-line argument of the form
video=efifb:auto
If there are multiple modes with the highest resolution, pick one with
the highest color depth.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Link: https://lore.kernel.org/r/20200328160601.378299-2-nivedita@alum.mit.edu
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
diff --git a/Documentation/fb/efifb.rst b/Documentation/fb/efifb.rst
index eca3846..5195505 100644
--- a/Documentation/fb/efifb.rst
+++ b/Documentation/fb/efifb.rst
@@ -57,4 +57,10 @@
"rgb" or "bgr" to match specifically those pixel formats, or a number
for a mode with matching bits per pixel.
+auto
+ The EFI stub will choose the mode with the highest resolution (product
+ of horizontal and vertical resolution). If there are multiple modes
+ with the highest resolution, it will choose one with the highest color
+ depth.
+
Edgar Hucek <gimli@dark-green.com>
