On Thu, Sep 06, 2018 at 03:02:32PM +0300, Ville Syrjälä wrote:
On Wed, Sep 05, 2018 at 04:38:50PM -0700, Deepak Rawat wrote:
Plane damage is irrelevant when full modeset happens so clear the damage blob property(If set by user-space). With damage blob cleared damage helper iterator will return full plane src as damage clip.
Signed-off-by: Deepak Rawat drawat@vmware.com
drivers/gpu/drm/drm_atomic_helper.c | 4 ++++ include/drm/drm_damage_helper.h | 10 ++++++++++ 2 files changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index be83e2763c18..e06d2d5d582f 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -31,6 +31,7 @@ #include <drm/drm_crtc_helper.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_writeback.h> +#include <drm/drm_damage_helper.h> #include <linux/dma-fence.h>
#include "drm_crtc_helper_internal.h" @@ -88,6 +89,9 @@ drm_atomic_helper_plane_changed(struct drm_atomic_state *state, return;
crtc_state->planes_changed = true;
if (drm_atomic_crtc_needs_modeset(crtc_state))drm_plane_clear_damage(plane_state);So if we sometimes magically clear it, where do we reinitialize it with the user provided damage for the next update?
} }
diff --git a/include/drm/drm_damage_helper.h b/include/drm/drm_damage_helper.h index f1282b459a4f..1f988f7fdd72 100644 --- a/include/drm/drm_damage_helper.h +++ b/include/drm/drm_damage_helper.h @@ -71,6 +71,16 @@ drm_plane_get_damage_clips(const struct drm_plane_state *state) state->fb_damage_clips->data : NULL); }
+/**
- drm_plane_clear_damage - clears damage blob in a plane state
- @state: Plane state
- */
+static inline void drm_plane_clear_damage(struct drm_plane_state *state) +{
- drm_property_blob_put(state->fb_damage_clips);
- state->fb_damage_clips = NULL;
Ah. So you're trying to clear out the user provided damage here. That doesn't really seem like sane sematics to me. Either the user provided damage should stick always instead of just sometimes, or it should always be cleared once the update is done (ie. could clear in duplicate_state() in that case).
Read patch 2 more careful, we always reset damage when duplicating state. So it's one-shot (like fences).
But you might also want to ignore damage (and do a full upload) in other cases, like a modeset, or when you move your plane between crtc. This function here is for that.
And yes this should be explained in the kerneldoc. And _clear_damage is not a great name for what it's meant to do, that's just what it does. I think in the past I've suggested _full_damage() or something like that. -Daniel
+}
void drm_plane_enable_fb_damage_clips(struct drm_plane *plane); int drm_atomic_helper_damage_iter_init(struct drm_atomic_helper_damage_iter *iter, -- 2.17.1
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