Create and attach the 'link bpc' DRM property for every HDMI connector
that's created through drmm_connector_hdmi_init.
Then, set the connector state's link_bpc member in the HDMI atomic check
state helper to the connector state's HDMI output bpc.
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
---
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 2 ++
drivers/gpu/drm/drm_connector.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index 9f3b696aceeb..b670bcdbd3c6 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -887,6 +887,8 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
struct drm_crtc *crtc = new_conn_state->crtc;
struct drm_crtc_state *crtc_state;
+ new_conn_state->link_bpc = new_conn_state->hdmi.output_bpc;
+
crtc_state = drm_atomic_get_crtc_state(state, crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 85557106218b..2a2e56bf062d 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -693,6 +693,10 @@ int drmm_connector_hdmi_init(struct drm_device *dev,
drm_connector_attach_max_bpc_property(connector, 8, max_bpc);
connector->max_bpc = max_bpc;
+ ret = drm_connector_attach_link_bpc_property(connector, max_bpc);
+ if (ret)
+ return ret;
+
if (max_bpc > 8)
drm_connector_attach_hdr_output_metadata_property(connector);
--
2.53.0