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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>
This commit is contained in:
Tomi Valkeinen 2010-05-21 10:09:18 +03:00 committed by Tomi Valkeinen
parent a602771c43
commit ffb63c95b2
1 changed files with 15 additions and 0 deletions
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15
drivers/video/omap2/displays/panel-taal.c
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@ -1210,6 +1210,10 @@ static int taal_enable_te(struct omap_dss_device *dssdev, bool enable)
int r;
mutex_lock(&td->lock);
if (td->te_enabled == enable)
goto end;
dsi_bus_lock();
if (td->enabled) {
@ -1221,6 +1225,7 @@ static int taal_enable_te(struct omap_dss_device *dssdev, bool enable)
td->te_enabled = enable;
dsi_bus_unlock();
end:
mutex_unlock(&td->lock);
return 0;
@ -1251,6 +1256,10 @@ static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate)
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 @@ static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate)
td->rotate = rotate;
dsi_bus_unlock();
end:
mutex_unlock(&td->lock);
return 0;
err:
@ -1290,6 +1300,10 @@ static int taal_mirror(struct omap_dss_device *dssdev, bool enable)
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 @@ static int taal_mirror(struct omap_dss_device *dssdev, bool enable)
td->mirror = enable;
dsi_bus_unlock();
end:
mutex_unlock(&td->lock);
return 0;
err: