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path: root/drivers/video/omap2/dss/overlay.c
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Diffstat (limited to 'drivers/video/omap2/dss/overlay.c')
-rw-r--r--drivers/video/omap2/dss/overlay.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/overlay.c b/drivers/video/omap2/dss/overlay.c
index 75642c22cac7..41a29024a8d0 100644
--- a/drivers/video/omap2/dss/overlay.c
+++ b/drivers/video/omap2/dss/overlay.c
@@ -257,6 +257,43 @@ static ssize_t overlay_global_alpha_store(struct omap_overlay *ovl,
return size;
}
+static ssize_t overlay_pre_mult_alpha_show(struct omap_overlay *ovl,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ ovl->info.pre_mult_alpha);
+}
+
+static ssize_t overlay_pre_mult_alpha_store(struct omap_overlay *ovl,
+ const char *buf, size_t size)
+{
+ int r;
+ struct omap_overlay_info info;
+
+ ovl->get_overlay_info(ovl, &info);
+
+ /* only GFX and Video2 plane support pre alpha multiplied
+ * set zero for Video1 plane
+ */
+ if (!dss_has_feature(FEAT_GLOBAL_ALPHA_VID1) &&
+ ovl->id == OMAP_DSS_VIDEO1)
+ info.pre_mult_alpha = 0;
+ else
+ info.pre_mult_alpha = simple_strtoul(buf, NULL, 10);
+
+ r = ovl->set_overlay_info(ovl, &info);
+ if (r)
+ return r;
+
+ if (ovl->manager) {
+ r = ovl->manager->apply(ovl->manager);
+ if (r)
+ return r;
+ }
+
+ return size;
+}
+
struct overlay_attribute {
struct attribute attr;
ssize_t (*show)(struct omap_overlay *, char *);
@@ -280,6 +317,9 @@ static OVERLAY_ATTR(enabled, S_IRUGO|S_IWUSR,
overlay_enabled_show, overlay_enabled_store);
static OVERLAY_ATTR(global_alpha, S_IRUGO|S_IWUSR,
overlay_global_alpha_show, overlay_global_alpha_store);
+static OVERLAY_ATTR(pre_mult_alpha, S_IRUGO|S_IWUSR,
+ overlay_pre_mult_alpha_show,
+ overlay_pre_mult_alpha_store);
static struct attribute *overlay_sysfs_attrs[] = {
&overlay_attr_name.attr,
@@ -290,6 +330,7 @@ static struct attribute *overlay_sysfs_attrs[] = {
&overlay_attr_output_size.attr,
&overlay_attr_enabled.attr,
&overlay_attr_global_alpha.attr,
+ &overlay_attr_pre_mult_alpha.attr,
NULL
};

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