Crtc: add set_mode() which doesn't take a fb

2 files changed, 23 insertions, 0 deletions

diff --git a/kms++/inc/kms++/crtc.h b/kms++/inc/kms++/crtc.h
index c86fc88..ea20ef8 100644
--- a/kms++/inc/kms++/crtc.h
+++ b/kms++/inc/kms++/crtc.h
@@ -18,6 +18,7 @@ public:
 
 	const std::vector<Plane*>& get_possible_planes() const { return m_possible_planes; }
 
+	int set_mode(Connector* conn, const Videomode& mode);
 	int set_mode(Connector* conn, Framebuffer& fb, const Videomode& mode);
 
 	int set_plane(Plane *plane, Framebuffer &fb,
diff --git a/kms++/src/crtc.cpp b/kms++/src/crtc.cpp
index c391f69..f94216f 100644
--- a/kms++/src/crtc.cpp
+++ b/kms++/src/crtc.cpp
@@ -58,6 +58,28 @@ void Crtc::restore_mode(Connector* conn)
 		       conns, 1, &c->mode);
 }
 
+int Crtc::set_mode(Connector* conn, const Videomode& mode)
+{
+	AtomicReq req(card());
+
+	unique_ptr<Blob> blob = mode.to_blob(card());
+
+	req.add(conn, {
+			{ "CRTC_ID", this->id() },
+		});
+
+	req.add(this, {
+			{ "ACTIVE", 1 },
+			{ "MODE_ID", blob->id() },
+		});
+
+	int r = req.commit_sync(true);
+
+	refresh();
+
+	return r;
+}
+
 int Crtc::set_mode(Connector* conn, Framebuffer& fb, const Videomode& mode)
 {
 	uint32_t conns[] = { conn->id() };