3 files changed, 13 insertions, 5 deletions
diff --git a/include/backend/drm/drm.h b/include/backend/drm/drm.h
index 3b01b64f..de5212d3 100644
--- a/include/backend/drm/drm.h
+++ b/include/backend/drm/drm.h
@@ -6,6 +6,7 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <time.h>
 #include <wayland-server.h>
 #include <wayland-util.h>
 #include <wlr/backend/drm.h>
@@ -57,6 +58,9 @@ struct wlr_drm_crtc {
 	union wlr_drm_crtc_props props;
 
 	struct wl_list connectors;
+
+	uint16_t *gamma_table;
+	size_t gamma_table_size;
 };
 
 struct wlr_drm_backend {
@@ -64,6 +68,7 @@ struct wlr_drm_backend {
 
 	struct wlr_drm_backend *parent;
 	const struct wlr_drm_interface *iface;
+	clockid_t clock;
 
 	int fd;
 
@@ -151,5 +156,7 @@ void restore_drm_outputs(struct wlr_drm_backend *drm);
 void scan_drm_connectors(struct wlr_drm_backend *state);
 int handle_drm_event(int fd, uint32_t mask, void *data);
 bool enable_drm_connector(struct wlr_output *output, bool enable);
+bool set_drm_connector_gamma(struct wlr_output *output, size_t size,
+	const uint16_t *r, const uint16_t *g, const uint16_t *b);
 
 #endif
diff --git a/include/backend/drm/iface.h b/include/backend/drm/iface.h
index ef0e7bf8..5308b136 100644
--- a/include/backend/drm/iface.h
+++ b/include/backend/drm/iface.h
@@ -28,11 +28,11 @@ struct wlr_drm_interface {
 		struct wlr_drm_crtc *crtc, int x, int y);
 	// Set the gamma lut on crtc
 	bool (*crtc_set_gamma)(struct wlr_drm_backend *drm,
-			struct wlr_drm_crtc *crtc, uint16_t *r, uint16_t *g, uint16_t *b,
-			uint32_t size);
+		struct wlr_drm_crtc *crtc, size_t size,
+		uint16_t *r, uint16_t *g, uint16_t *b);
 	// Get the gamma lut size of a crtc
-	uint32_t (*crtc_get_gamma_size)(struct wlr_drm_backend *drm,
-			struct wlr_drm_crtc *crtc);
+	size_t (*crtc_get_gamma_size)(struct wlr_drm_backend *drm,
+		struct wlr_drm_crtc *crtc);
 };
 
 extern const struct wlr_drm_interface atomic_iface;
diff --git a/include/backend/drm/properties.h b/include/backend/drm/properties.h
index 5b17e77e..321b4492 100644
--- a/include/backend/drm/properties.h
+++ b/include/backend/drm/properties.h
@@ -14,12 +14,13 @@ union wlr_drm_connector_props {
 	struct {
 		uint32_t edid;
 		uint32_t dpms;
+		uint32_t link_status; // not guaranteed to exist
 
 		// atomic-modesetting only
 
 		uint32_t crtc_id;
 	};
-	uint32_t props[3];
+	uint32_t props[4];
 };
 
 union wlr_drm_crtc_props {