drm: Introduce "Virtual" connectors and encoders

This will allow us to attach various properties specific to virtual
monitors in the future.

Note that we don't export an EDID property for "Virtual" connectors.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index fe738f0..f3ef654 100644 (file)
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -162,6 +162,7 @@ static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
        { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
        { DRM_MODE_CONNECTOR_TV, "TV", 0 },
        { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
+       { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
 };
 
 static struct drm_prop_enum_list drm_encoder_enum_list[] =
@@ -170,6 +171,7 @@ static struct drm_prop_enum_list drm_encoder_enum_list[] =
        { DRM_MODE_ENCODER_TMDS, "TMDS" },
        { DRM_MODE_ENCODER_LVDS, "LVDS" },
        { DRM_MODE_ENCODER_TVDAC, "TV" },
+       { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
 };
 
 char *drm_get_encoder_name(struct drm_encoder *encoder)
@@ -463,8 +465,10 @@ void drm_connector_init(struct drm_device *dev,
        list_add_tail(&connector->head, &dev->mode_config.connector_list);
        dev->mode_config.num_connector++;
 
-       drm_connector_attach_property(connector,
-                                     dev->mode_config.edid_property, 0);
+       if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
+               drm_connector_attach_property(connector,
+                                             dev->mode_config.edid_property,
+                                             0);
 
        drm_connector_attach_property(connector,
                                      dev->mode_config.dpms_property, 0);

diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h
index c4961ea..d30bedf 100644 (file)
--- a/include/drm/drm_mode.h
+++ b/include/drm/drm_mode.h
@@ -120,11 +120,12 @@ struct drm_mode_crtc {
        struct drm_mode_modeinfo mode;
 };
 
-#define DRM_MODE_ENCODER_NONE  0
-#define DRM_MODE_ENCODER_DAC   1
-#define DRM_MODE_ENCODER_TMDS  2
-#define DRM_MODE_ENCODER_LVDS  3
-#define DRM_MODE_ENCODER_TVDAC 4
+#define DRM_MODE_ENCODER_NONE   0
+#define DRM_MODE_ENCODER_DAC    1
+#define DRM_MODE_ENCODER_TMDS   2
+#define DRM_MODE_ENCODER_LVDS   3
+#define DRM_MODE_ENCODER_TVDAC  4
+#define DRM_MODE_ENCODER_VIRTUAL 5
 
 struct drm_mode_get_encoder {
        __u32 encoder_id;
@@ -162,6 +163,7 @@ struct drm_mode_get_encoder {
 #define DRM_MODE_CONNECTOR_HDMIB       12
 #define DRM_MODE_CONNECTOR_TV          13
 #define DRM_MODE_CONNECTOR_eDP         14
+#define DRM_MODE_CONNECTOR_VIRTUAL      15
 
 struct drm_mode_get_connector {