[PATCH v4 08/17] drm/i915/display: Add handling for new "active color format" property

[Werner Sembach]

This commit implements the "active color format" drm property for the Intel
GPU driver.

Signed-off-by: Werner Sembach <wse@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_display.c | 22 +++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_dp.c      |  2 ++
 drivers/gpu/drm/i915/display/intel_dp_mst.c  |  5 +++++
 drivers/gpu/drm/i915/display/intel_hdmi.c    |  1 +
 4 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 4b00d2f3b3c8..57bec7f452d8 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -10609,6 +10609,21 @@ static void intel_atomic_prepare_plane_clear_colors(struct intel_atomic_state *s
 	}
 }
 
+static int convert_intel_output_format_into_drm_color_format(enum intel_output_format output_format)
+{
+	switch (output_format) {
+	case INTEL_OUTPUT_FORMAT_RGB:
+		return DRM_COLOR_FORMAT_RGB444;
+	case INTEL_OUTPUT_FORMAT_YCBCR420:
+		return DRM_COLOR_FORMAT_YCRCB420;
+	case INTEL_OUTPUT_FORMAT_YCBCR444:
+		return DRM_COLOR_FORMAT_YCRCB444;
+	default:
+		break;
+	}
+	return 0;
+}
+
 static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 {
 	struct drm_device *dev = state->base.dev;
@@ -10920,8 +10935,13 @@ static int intel_atomic_commit(struct drm_device *dev,
 
 			drm_connector_set_active_bpc_property(connector,
 				new_crtc_state->pipe_bpp / 3);
-		} else
+			drm_connector_set_active_color_format_property(connector,
+				convert_intel_output_format_into_drm_color_format(
+					new_crtc_state->output_format));
+		} else {
 			drm_connector_set_active_bpc_property(connector, 0);
+			drm_connector_set_active_color_format_property(connector, 0);
+		}
 	}
 
 	drm_atomic_state_get(&state->base);
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 2d7b5318ae7b..9204bc14590a 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -4691,9 +4691,11 @@ intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connect
 	if (HAS_GMCH(dev_priv)) {
 		drm_connector_attach_max_bpc_property(connector, 6, 10);
 		drm_connector_attach_active_bpc_property(connector, 6, 10);
+		drm_connector_attach_active_color_format_property(connector);
 	} else if (DISPLAY_VER(dev_priv) >= 5) {
 		drm_connector_attach_max_bpc_property(connector, 6, 12);
 		drm_connector_attach_active_bpc_property(connector, 6, 12);
+		drm_connector_attach_active_color_format_property(connector);
 	}
 
 	/* Register HDMI colorspace for case of lspcon */
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 16bfc59570a5..3e4237df3360 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -856,6 +856,11 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
 	if (connector->active_bpc_property)
 		drm_connector_attach_active_bpc_property(connector, 6, 12);
 
+	connector->active_color_format_property =
+		intel_dp->attached_connector->base.active_color_format_property;
+	if (connector->active_color_format_property)
+		drm_connector_attach_active_color_format_property(connector);
+
 	return connector;
 
 err:
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 9160e21ac9d6..367aba57b55f 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2516,6 +2516,7 @@ intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *c
 	if (!HAS_GMCH(dev_priv)) {
 		drm_connector_attach_max_bpc_property(connector, 8, 12);
 		drm_connector_attach_active_bpc_property(connector, 8, 12);
+		drm_connector_attach_active_color_format_property(connector);
 	}
 }
 
-- 
2.25.1