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| author |   Thomas Zimmermann <tzimmermann@suse.de> | 2019-07-05 09:31:00 +0200 |
|---|---|---|
| committer |   Gerd Hoffmann <kraxel@redhat.com> | 2019-08-01 15:01:35 +0200 |
| commit | 01b947afaa940327e7adf57070a4bf3d0bed9810 (patch) | |
| tree | 2ec3fe68cca1208ff9dd6fa2ed33e9e85e4fd189 /include/drm | |
| parent | drm/fb-helper: Map DRM client buffer only when required (diff) | |
| download | linux-dev-01b947afaa940327e7adf57070a4bf3d0bed9810.tar.xz linux-dev-01b947afaa940327e7adf57070a4bf3d0bed9810.zip | |
drm/fb-helper: Instanciate shadow FB if configured in device's mode_config
Generic framebuffer emulation uses a shadow buffer for framebuffers with
dirty() function. If drivers want to use the shadow FB without such a
function, they can now set prefer_shadow or prefer_shadow_fbdev in their
mode_config structures. The former flag is exported to userspace, the
latter flag is fbdev-only.
v3:
* only schedule dirty worker if fbdev uses shadow fb
* test shadow fb settings with boolean operators
* use bool for struct drm_mode_config.prefer_shadow_fbdev
* fix documentation comments
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/315834/
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_mode_config.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 759d462d028b..f57eea0481e0 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -853,6 +853,13 @@ struct drm_mode_config { uint32_t preferred_depth, prefer_shadow; /** + * @prefer_shadow_fbdev: + * + * Hint to framebuffer emulation to prefer shadow-fb rendering. + */ + bool prefer_shadow_fbdev; + + /** * @quirk_addfb_prefer_xbgr_30bpp: * * Special hack for legacy ADDFB to keep nouveau userspace happy. Should |