mirror of https://gitee.com/openkylin/linux.git
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>
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@ -1210,6 +1210,10 @@ static int taal_enable_te(struct omap_dss_device *dssdev, bool enable)
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int r;
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mutex_lock(&td->lock);
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if (td->te_enabled == enable)
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goto end;
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dsi_bus_lock();
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if (td->enabled) {
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@ -1221,6 +1225,7 @@ static int taal_enable_te(struct omap_dss_device *dssdev, bool enable)
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td->te_enabled = enable;
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dsi_bus_unlock();
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end:
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mutex_unlock(&td->lock);
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return 0;
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@ -1251,6 +1256,10 @@ static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate)
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dev_dbg(&dssdev->dev, "rotate %d\n", rotate);
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mutex_lock(&td->lock);
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if (td->rotate == rotate)
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goto end;
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dsi_bus_lock();
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if (td->enabled) {
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@ -1262,6 +1271,7 @@ static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate)
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td->rotate = rotate;
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dsi_bus_unlock();
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end:
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mutex_unlock(&td->lock);
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return 0;
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err:
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@ -1290,6 +1300,10 @@ static int taal_mirror(struct omap_dss_device *dssdev, bool enable)
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dev_dbg(&dssdev->dev, "mirror %d\n", enable);
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mutex_lock(&td->lock);
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if (td->mirror == enable)
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goto end;
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dsi_bus_lock();
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if (td->enabled) {
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r = taal_set_addr_mode(td->rotate, enable);
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@ -1300,6 +1314,7 @@ static int taal_mirror(struct omap_dss_device *dssdev, bool enable)
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td->mirror = enable;
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dsi_bus_unlock();
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end:
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mutex_unlock(&td->lock);
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return 0;
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err:
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