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authorThomas Zimmermann <tzimmermann@suse.de>2019-07-05 10:31:00 +0300
committerGerd Hoffmann <kraxel@redhat.com>2019-08-01 16:01:35 +0300
commit01b947afaa940327e7adf57070a4bf3d0bed9810 (patch)
tree2ec3fe68cca1208ff9dd6fa2ed33e9e85e4fd189 /include
parent87e281f88f3aa4ed401554f793685bcb2463580a (diff)
downloadlinux-01b947afaa940327e7adf57070a4bf3d0bed9810.tar.xz
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')
-rw-r--r--include/drm/drm_mode_config.h7
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