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drm/i915: only set TV mode when any property changed

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If there's no real property change, don't need to set TV mode again.

Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com>
[anholt: checkpatch.pl fix]
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Zhenyu Wang 2009-03-23 19:40:57 +08:00 committed by Eric Anholt
parent 580982d399
commit ebcc8f2ead
1 changed files with 20 additions and 7 deletions
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27
drivers/gpu/drm/i915/intel_tv.c
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@ -1571,32 +1571,45 @@ intel_tv_set_property(struct drm_connector *connector, struct drm_property *prop
struct intel_output *intel_output = to_intel_output(connector);
struct intel_tv_priv *tv_priv = intel_output->dev_priv;
int ret = 0;
bool changed = false;
ret = drm_connector_property_set_value(connector, property, val);
if (ret < 0)
goto out;
if (property == dev->mode_config.tv_left_margin_property)
if (property == dev->mode_config.tv_left_margin_property &&
tv_priv->margin[TV_MARGIN_LEFT] != val) {
tv_priv->margin[TV_MARGIN_LEFT] = val;
else if (property == dev->mode_config.tv_right_margin_property)
changed = true;
} else if (property == dev->mode_config.tv_right_margin_property &&
tv_priv->margin[TV_MARGIN_RIGHT] != val) {
tv_priv->margin[TV_MARGIN_RIGHT] = val;
else if (property == dev->mode_config.tv_top_margin_property)
changed = true;
} else if (property == dev->mode_config.tv_top_margin_property &&
tv_priv->margin[TV_MARGIN_TOP] != val) {
tv_priv->margin[TV_MARGIN_TOP] = val;
else if (property == dev->mode_config.tv_bottom_margin_property)
changed = true;
} else if (property == dev->mode_config.tv_bottom_margin_property &&
tv_priv->margin[TV_MARGIN_BOTTOM] != val) {
tv_priv->margin[TV_MARGIN_BOTTOM] = val;
else if (property == dev->mode_config.tv_mode_property) {
changed = true;
} else if (property == dev->mode_config.tv_mode_property) {
if (val >= NUM_TV_MODES) {
ret = -EINVAL;
goto out;
}
if (!strcmp(tv_priv->tv_format, tv_modes[val].name))
goto out;
tv_priv->tv_format = tv_modes[val].name;
intel_tv_mode_set(&intel_output->enc, NULL, NULL);
changed = true;
} else {
ret = -EINVAL;
goto out;
}
intel_tv_mode_set(&intel_output->enc, NULL, NULL);
if (changed)
intel_tv_mode_set(&intel_output->enc, NULL, NULL);
out:
return ret;
}