[PATCH v4 2/7] drm/display: hdmi-state-helper: Force modeset on colorspace change

["Jan Claußen" <jan.claussen10@web.de>]

The colorimetry signalled to the sink is part of the AVI infoframe,
which is only updated on a modeset. A change of the colorspace
property therefore never reaches the sink.

Treat a colorspace change like a change of the Broadcast RGB, output
bpc or output format, and force a modeset.

Signed-off-by: Jan Claußen <jan.claussen10@web.de>
---
 drivers/gpu/drm/display/drm_hdmi_state_helper.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index 7cdb7ca3dc12..9368e53c5945 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -925,7 +925,8 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
 
 	if (old_conn_state->hdmi.broadcast_rgb != new_conn_state->hdmi.broadcast_rgb ||
 	    old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc ||
-	    old_conn_state->hdmi.output_format != new_conn_state->hdmi.output_format) {
+	    old_conn_state->hdmi.output_format != new_conn_state->hdmi.output_format ||
+	    old_conn_state->colorspace != new_conn_state->colorspace) {
 		struct drm_crtc *crtc = new_conn_state->crtc;
 		struct drm_crtc_state *crtc_state;
 
-- 
2.56.0