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authorThomas Zimmermann <tzimmermann@suse.de>2021-11-10 13:37:02 +0300
committerThomas Zimmermann <tzimmermann@suse.de>2021-11-11 14:06:58 +0300
commit84e9dfd5185285df55ae9068c89cde1a88baa7b7 (patch)
tree9a2deb563aa450092ac699ac5fec9f96eceb27ec /Documentation/gpu
parent9239f3e1807c282e3c6bced510640910e9b25c60 (diff)
downloadlinux-84e9dfd5185285df55ae9068c89cde1a88baa7b7.tar.xz
drm: Clarify semantics of struct drm_mode_config.{min, max}_{width, height}
Add additional information on the semantics of the size fields in struct drm_mode_config. Also add a TODO to review all driver for correct usage of these fields. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20211110103702.374-10-tzimmermann@suse.de
Diffstat (limited to 'Documentation/gpu')
-rw-r--r--Documentation/gpu/todo.rst15
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index 6593c4c4006e..f504d363fef5 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -452,6 +452,21 @@ Contact: Thomas Zimmermann <tzimmermann@suse.de>, Christian König, Daniel Vette
Level: Intermediate
+Review all drivers for setting struct drm_mode_config.{max_width,max_height} correctly
+--------------------------------------------------------------------------------------
+
+The values in struct drm_mode_config.{max_width,max_height} describe the
+maximum supported framebuffer size. It's the virtual screen size, but many
+drivers treat it like limitations of the physical resolution.
+
+The maximum width depends on the hardware's maximum scanline pitch. The
+maximum height depends on the amount of addressable video memory. Review all
+drivers to initialize the fields to the correct values.
+
+Contact: Thomas Zimmermann <tzimmermann@suse.de>
+
+Level: Intermediate
+
Core refactorings
=================