OMAP: DSS2: Taal: Optimize enable_te, rotate, mirror when value unchanged
Skip any further processing of taal_enable_te(), taal_rotate(), and
taal_mirror() if value remains unchanged.
Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c
index 6848e36..e1c765d 100644
--- a/drivers/video/omap2/displays/panel-taal.c
+++ b/drivers/video/omap2/displays/panel-taal.c
@@ -1210,6 +1210,10 @@
int r;
mutex_lock(&td->lock);
+
+ if (td->te_enabled == enable)
+ goto end;
+
dsi_bus_lock();
if (td->enabled) {
@@ -1221,6 +1225,7 @@
td->te_enabled = enable;
dsi_bus_unlock();
+end:
mutex_unlock(&td->lock);
return 0;
@@ -1251,6 +1256,10 @@
dev_dbg(&dssdev->dev, "rotate %d\n", rotate);
mutex_lock(&td->lock);
+
+ if (td->rotate == rotate)
+ goto end;
+
dsi_bus_lock();
if (td->enabled) {
@@ -1262,6 +1271,7 @@
td->rotate = rotate;
dsi_bus_unlock();
+end:
mutex_unlock(&td->lock);
return 0;
err:
@@ -1290,6 +1300,10 @@
dev_dbg(&dssdev->dev, "mirror %d\n", enable);
mutex_lock(&td->lock);
+
+ if (td->mirror == enable)
+ goto end;
+
dsi_bus_lock();
if (td->enabled) {
r = taal_set_addr_mode(td->rotate, enable);
@@ -1300,6 +1314,7 @@
td->mirror = enable;
dsi_bus_unlock();
+end:
mutex_unlock(&td->lock);
return 0;
err: