[PATCHv2 2/8] drm/omap: add manual update detection helper

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In preparation for manually updated display support, such as DSI
command mode panels, this adds a simple helper to see if a connector
is manually updated.

Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/omapdrm/omap_connector.c | 8 ++++++++
 drivers/gpu/drm/omapdrm/omap_connector.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c
index a0d7b1d905e8..a33b51484b2d 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.c
+++ b/drivers/gpu/drm/omapdrm/omap_connector.c
@@ -57,6 +57,14 @@ bool omap_connector_get_hdmi_mode(struct drm_connector *connector)
 	return omap_connector->hdmi_mode;
 }
 
+bool omap_connector_get_manually_updated(struct drm_connector *connector)
+{
+	struct omap_connector *omap_connector = to_omap_connector(connector);
+
+	return !!(omap_connector->dssdev->caps &
+		  OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE);
+}
+
 static enum drm_connector_status omap_connector_detect(
 		struct drm_connector *connector, bool force)
 {
diff --git a/drivers/gpu/drm/omapdrm/omap_connector.h b/drivers/gpu/drm/omapdrm/omap_connector.h
index 98bbc779b302..652136d167f5 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.h
+++ b/drivers/gpu/drm/omapdrm/omap_connector.h
@@ -33,5 +33,6 @@ struct drm_connector *omap_connector_init(struct drm_device *dev,
 struct drm_encoder *omap_connector_attached_encoder(
 		struct drm_connector *connector);
 bool omap_connector_get_hdmi_mode(struct drm_connector *connector);
+bool omap_connector_get_manually_updated(struct drm_connector *connector);
 
 #endif /* __OMAPDRM_CONNECTOR_H__ */
-- 
2.15.1

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