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drm: add drm_property_change_is_valid
Move code from drm_mode_connector_property_set_ioctl to a new function, so we can reuse this code when we add crtc properties. Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com> Reviewed-by: Rob Clark <rob.clark@linaro.org> Tested-by: Rob Clark <rob.clark@linaro.org> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -3074,6 +3074,24 @@ int drm_mode_connector_update_edid_property(struct drm_connector *connector,
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}
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EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
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static bool drm_property_change_is_valid(struct drm_property *property,
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__u64 value)
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{
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if (property->flags & DRM_MODE_PROP_IMMUTABLE)
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return false;
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if (property->flags & DRM_MODE_PROP_RANGE) {
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if (value < property->values[0] || value > property->values[1])
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return false;
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return true;
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} else {
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int i;
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for (i = 0; i < property->num_values; i++)
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if (property->values[i] == value)
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return true;
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return false;
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}
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}
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int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
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void *data, struct drm_file *file_priv)
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{
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@ -3110,28 +3128,9 @@ int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
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}
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property = obj_to_property(obj);
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if (property->flags & DRM_MODE_PROP_IMMUTABLE)
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if (!drm_property_change_is_valid(property, out_resp->value))
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goto out;
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if (property->flags & DRM_MODE_PROP_RANGE) {
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if (out_resp->value < property->values[0])
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goto out;
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if (out_resp->value > property->values[1])
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goto out;
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} else {
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int found = 0;
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for (i = 0; i < property->num_values; i++) {
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if (property->values[i] == out_resp->value) {
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found = 1;
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break;
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}
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}
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if (!found) {
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goto out;
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}
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}
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/* Do DPMS ourselves */
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if (property == connector->dev->mode_config.dpms_property) {
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if (connector->funcs->dpms)
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