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| author | Tomi Valkeinen <Tomi.Valkeinen@nokia.com> | 2010-05-21 09:09:18 +0200 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@nokia.com> | 2010-08-05 15:52:07 +0200 |
| commit | ffb63c95b2fa52b02b45537d18f0ca698bef5496 (patch) | |
| tree | ff1df1051e9d6353af7880150691c0e363d93fb6 /drivers/video/omap2/displays/panel-taal.c | |
| parent | OMAP: DSS2: DSI: detect unsupported update requests (diff) | |
| download | linux-ffb63c95b2fa52b02b45537d18f0ca698bef5496.tar.xz linux-ffb63c95b2fa52b02b45537d18f0ca698bef5496.zip | |
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>
Diffstat (limited to 'drivers/video/omap2/displays/panel-taal.c')
| -rw-r--r-- | drivers/video/omap2/displays/panel-taal.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c index 6848e3633ed9..e1c765d11419 100644 --- a/drivers/video/omap2/displays/panel-taal.c +++ b/drivers/video/omap2/displays/panel-taal.c @@ -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: |