drm: introduce generation counter to interface.

Idea being if you want to add new crtc/output/encoder dynamically later,
you just increase the generation counter and userspace should re-read
all the resources

1 files changed, 7 insertions, 0 deletions

diff --git a/shared-core/drm.h b/shared-core/drm.h
index 132c7746..40653b4b 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -1033,6 +1033,7 @@ struct drm_mode_card_res {
 	int count_encoders;
 	int min_width, max_width;
 	int min_height, max_height;
+	uint32_t generation;
 };
 
 struct drm_mode_crtc {
@@ -1043,6 +1044,8 @@ struct drm_mode_crtc {
 
 	int x, y; /**< Position on the frameuffer */
 
+	uint32_t generation;
+
 	int count_connectors;
 	unsigned int connectors; /**< Connectors that are connected */
 
@@ -1055,6 +1058,8 @@ struct drm_mode_crtc {
 
 struct drm_mode_get_encoder {
 
+	uint32_t generation;
+
 	uint32_t encoder_type;
 	uint32_t encoder_id;
 
@@ -1085,6 +1090,8 @@ struct drm_mode_get_connector {
 	unsigned int connector_type;
 	unsigned int connector_type_id;
 
+	uint32_t generation;
+
 	unsigned int connection;
 	unsigned int mm_width, mm_height; /**< HxW in millimeters */
 	unsigned int subpixel;