[PATCH 3/9] compositor-drm: Deal with VT switch in clone mode

[Xiong Zhang]

When system do VT switch, slave output should use master
output's fb to restore mode.

Signed-off-by: Xiong Zhang <xiong.y.zhang at intel.com>
---
 src/compositor-drm.c | 38 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

diff --git a/src/compositor-drm.c b/src/compositor-drm.c
index ce85aec..1d8c983 100644
--- a/src/compositor-drm.c
+++ b/src/compositor-drm.c
@@ -2608,6 +2608,7 @@ drm_compositor_set_modes(struct drm_compositor *compositor)
 	struct drm_output *output;
 	struct drm_mode *drm_mode;
 	int ret;
+	struct drm_output *clone_output;
 
 	wl_list_for_each(output, &compositor->base.output_list, base.link) {
 		if (!output->current) {
@@ -2628,9 +2629,33 @@ drm_compositor_set_modes(struct drm_compositor *compositor)
 		if (ret < 0) {
 			weston_log(
 				"failed to set mode %dx%d for output at %d,%d: %m\n",
-				drm_mode->base.width, drm_mode->base.height, 
+				drm_mode->base.width, drm_mode->base.height,
 				output->base.x, output->base.y);
 		}
+
+		if (!output->base.is_slave) {
+			wl_list_for_each(clone_output,
+					 &output->base.clone_output_list,
+					 base.link) {
+				drm_mode = (struct drm_mode *)
+					clone_output->base.current_mode;
+				ret = drmModeSetCrtc(compositor->drm.fd,
+						     clone_output->crtc_id,
+						     output->current->fb_id,
+						     0, 0,
+						     &clone_output->connector_id,
+						     1,
+						     &drm_mode->mode_info);
+				if (ret < 0) {
+					weston_log("failed to set mode %dx%d
+						    for output at %d,%d: %m\n",
+						    drm_mode->base.width,
+						    drm_mode->base.height,
+						    clone_output->base.x,
+						    clone_output->base.y);
+				}
+			}
+		}
 	}
 }
 
@@ -2641,6 +2666,7 @@ session_notify(struct wl_listener *listener, void *data)
 	struct drm_compositor *ec = data;
 	struct drm_sprite *sprite;
 	struct drm_output *output;
+	struct drm_output *clone_output;
 
 	if (ec->base.session_active) {
 		weston_log("activating session\n");
@@ -2666,6 +2692,16 @@ session_notify(struct wl_listener *listener, void *data)
 		wl_list_for_each(output, &ec->base.output_list, base.link) {
 			output->base.repaint_needed = 0;
 			drmModeSetCursor(ec->drm.fd, output->crtc_id, 0, 0, 0);
+
+			if (!output->base.is_slave) {
+				wl_list_for_each(clone_output,
+						 &output->base.clone_output_list,
+						 base.link) {
+					drmModeSetCursor(ec->drm.fd,
+							 clone_output->crtc_id,
+							 0, 0, 0);
+				}
+			}
 		}
 
 		output = container_of(ec->base.output_list.next,
-- 
1.8.3.2