aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/video/omap2/dss/manager.c
diff options
context:
space:
mode:
authorTomi Valkeinen <tomi.valkeinen@nokia.com>2010-06-09 15:09:30 +0300
committerTomi Valkeinen <tomi.valkeinen@nokia.com>2010-08-03 15:18:45 +0300
commit8cab90fdb4c71f9a92c09c015aee42ff2149b317 (patch)
tree76d367e62d5bc784f10a74c62da45376f8723580 /drivers/video/omap2/dss/manager.c
parent75c7d59daf502a4eb040e181120fb83b4a8c0719 (diff)
OMAP: DSS2: Fix update area calculations with multiple scaled overlays
When there are multiple scaled overlays simply checking whether the update area intersects any of them in order is not enough. If eg. VID1 starts out completely outside the update area but VID2 causes the update area to increase in such a way that VID1 now falls partially within the increased update area VID1 should be rechecked and the update area possibly increased even further to fully encompass VID1. So simply keep looping over the overlays until such time that none of the overlays caused the update area to change. Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Diffstat (limited to 'drivers/video/omap2/dss/manager.c')
-rw-r--r--drivers/video/omap2/dss/manager.c141
1 files changed, 78 insertions, 63 deletions
diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
index 7e1ec5af6c70..a1d84ef65904 100644
--- a/drivers/video/omap2/dss/manager.c
+++ b/drivers/video/omap2/dss/manager.c
@@ -972,6 +972,7 @@ void dss_setup_partial_planes(struct omap_dss_device *dssdev,
int i;
u16 x, y, w, h;
unsigned long flags;
+ bool area_changed;
x = *xi;
y = *yi;
@@ -992,70 +993,84 @@ void dss_setup_partial_planes(struct omap_dss_device *dssdev,
spin_lock_irqsave(&dss_cache.lock, flags);
- /* We need to show the whole overlay if it is scaled. So look for
- * those, and make the update area larger if found.
- * Also mark the overlay cache dirty */
- for (i = 0; i < num_ovls; ++i) {
- unsigned x1, y1, x2, y2;
- unsigned outw, outh;
-
- oc = &dss_cache.overlay_cache[i];
-
- if (oc->channel != mgr->id)
- continue;
-
- oc->dirty = true;
-
- if (!oc->enabled)
- continue;
-
- if (!dispc_is_overlay_scaled(oc))
- continue;
-
- outw = oc->out_width == 0 ? oc->width : oc->out_width;
- outh = oc->out_height == 0 ? oc->height : oc->out_height;
-
- /* is the overlay outside the update region? */
- if (!rectangle_intersects(x, y, w, h,
- oc->pos_x, oc->pos_y,
- outw, outh))
- continue;
-
- /* if the overlay totally inside the update region? */
- if (rectangle_subset(oc->pos_x, oc->pos_y, outw, outh,
- x, y, w, h))
- continue;
-
- if (x > oc->pos_x)
- x1 = oc->pos_x;
- else
- x1 = x;
-
- if (y > oc->pos_y)
- y1 = oc->pos_y;
- else
- y1 = y;
-
- if ((x + w) < (oc->pos_x + outw))
- x2 = oc->pos_x + outw;
- else
- x2 = x + w;
-
- if ((y + h) < (oc->pos_y + outh))
- y2 = oc->pos_y + outh;
- else
- y2 = y + h;
-
- x = x1;
- y = y1;
- w = x2 - x1;
- h = y2 - y1;
-
- make_even(&x, &w);
-
- DSSDBG("changing upd area due to ovl(%d) scaling %d,%d %dx%d\n",
+ /*
+ * Execute the outer loop until the inner loop has completed
+ * once without increasing the update area. This will ensure that
+ * all scaled overlays end up completely within the update area.
+ */
+ do {
+ area_changed = false;
+
+ /* We need to show the whole overlay if it is scaled. So look
+ * for those, and make the update area larger if found.
+ * Also mark the overlay cache dirty */
+ for (i = 0; i < num_ovls; ++i) {
+ unsigned x1, y1, x2, y2;
+ unsigned outw, outh;
+
+ oc = &dss_cache.overlay_cache[i];
+
+ if (oc->channel != mgr->id)
+ continue;
+
+ oc->dirty = true;
+
+ if (!oc->enabled)
+ continue;
+
+ if (!dispc_is_overlay_scaled(oc))
+ continue;
+
+ outw = oc->out_width == 0 ?
+ oc->width : oc->out_width;
+ outh = oc->out_height == 0 ?
+ oc->height : oc->out_height;
+
+ /* is the overlay outside the update region? */
+ if (!rectangle_intersects(x, y, w, h,
+ oc->pos_x, oc->pos_y,
+ outw, outh))
+ continue;
+
+ /* if the overlay totally inside the update region? */
+ if (rectangle_subset(oc->pos_x, oc->pos_y, outw, outh,
+ x, y, w, h))
+ continue;
+
+ if (x > oc->pos_x)
+ x1 = oc->pos_x;
+ else
+ x1 = x;
+
+ if (y > oc->pos_y)
+ y1 = oc->pos_y;
+ else
+ y1 = y;
+
+ if ((x + w) < (oc->pos_x + outw))
+ x2 = oc->pos_x + outw;
+ else
+ x2 = x + w;
+
+ if ((y + h) < (oc->pos_y + outh))
+ y2 = oc->pos_y + outh;
+ else
+ y2 = y + h;
+
+ x = x1;
+ y = y1;
+ w = x2 - x1;
+ h = y2 - y1;
+
+ make_even(&x, &w);
+
+ DSSDBG("changing upd area due to ovl(%d) "
+ "scaling %d,%d %dx%d\n",
i, x, y, w, h);
- }
+
+ area_changed = true;
+ }
+ } while (area_changed);
mc = &dss_cache.manager_cache[mgr->id];
mc->do_manual_update = true;

Privacy Policy