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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2021-11-10 11:37:02 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2021-11-11 12:06:58 +0100 |
| commit | 84e9dfd5185285df55ae9068c89cde1a88baa7b7 (patch) | |
| tree | 9a2deb563aa450092ac699ac5fec9f96eceb27ec /Documentation/gpu | |
| parent | drm/simpledrm: Support virtual screen sizes (diff) | |
| download | linux-84e9dfd5185285df55ae9068c89cde1a88baa7b7.tar.xz linux-84e9dfd5185285df55ae9068c89cde1a88baa7b7.zip | |
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.rst | 15 |
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 ================= |