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authorMatt Roper <matthew.d.roper@intel.com>2014-05-29 19:06:52 +0400
committerDaniel Vetter <daniel.vetter@ffwll.ch>2014-06-05 10:52:43 +0400
commit7daf8d54c17c6dae0c949aa37cbc6bb5604a4b2e (patch)
tree27179d70121515fd555d258aef290d59023c4cdb /include/drm
parent7f994f3fc4f44365a953dbcac55131b7160750ea (diff)
downloadlinux-7daf8d54c17c6dae0c949aa37cbc6bb5604a4b2e.tar.xz
drm/plane-helper: Add drm_plane_helper_check_update() (v3)
Pull the parameter checking from drm_primary_helper_update() out into its own function; drivers that provide their own setplane() implementations rather than using the helper may still want to share this parameter checking logic. A few of the checks here were also updated based on suggestions by Ville Syrjälä. v3: - s/primary_helper/plane_helper/ --- this checking logic may be useful for other types of planes as well. - Fix visibility check (need to dereference visibility pointer) v2: - Pass src/dest/clip rects and min/max scaling down to helper to avoid duplication of effort between helper and drivers (suggested by Ville). - Allow caller to specify whether the primary plane should be updatable while the crtc is disabled. Cc: dri-devel@lists.freedesktop.org Reviewed-by: Chon Ming Lee <chon.ming.lee@intel.com> Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Acked-by: Dave Airlie <airlied@gmail.com> [danvet: Include header properly and fixup declaration mismatch to make this compile.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/drm_plane_helper.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/drm/drm_plane_helper.h b/include/drm/drm_plane_helper.h
index c5e7ab9503c8..52e6870534b2 100644
--- a/include/drm/drm_plane_helper.h
+++ b/include/drm/drm_plane_helper.h
@@ -24,6 +24,17 @@
#ifndef DRM_PLANE_HELPER_H
#define DRM_PLANE_HELPER_H
+#include <drm/drm_rect.h>
+
+/*
+ * Drivers that don't allow primary plane scaling may pass this macro in place
+ * of the min/max scale parameters of the update checker function.
+ *
+ * Due to src being in 16.16 fixed point and dest being in integer pixels,
+ * 1<<16 represents no scaling.
+ */
+#define DRM_PLANE_HELPER_NO_SCALING (1<<16)
+
/**
* DOC: plane helpers
*
@@ -31,6 +42,17 @@
* planes.
*/
+extern int drm_plane_helper_check_update(struct drm_plane *plane,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_rect *src,
+ struct drm_rect *dest,
+ const struct drm_rect *clip,
+ int min_scale,
+ int max_scale,
+ bool can_position,
+ bool can_update_disabled,
+ bool *visible);
extern int drm_primary_helper_update(struct drm_plane *plane,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,