linux-kernel - [PATCH v2 7/7] drm/i915/display: Add handling for new "active color format" property

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Date:   Tue,  8 Jun 2021 19:43:20 +0200
From:   Werner Sembach <wse@...edocomputers.com>
To:     harry.wentland@....com, sunpeng.li@....com,
        alexander.deucher@....com, christian.koenig@....com,
        airlied@...ux.ie, daniel@...ll.ch,
        maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
        tzimmermann@...e.de, jani.nikula@...ux.intel.com,
        joonas.lahtinen@...ux.intel.com, rodrigo.vivi@...el.com,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org
Cc:     Werner Sembach <wse@...edocomputers.com>
Subject: [PATCH v2 7/7] drm/i915/display: Add handling for new "active color format" property

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

Signed-off-by: Werner Sembach <wse@...edocomputers.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 20 +++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_dp.c      |  2 ++
 drivers/gpu/drm/i915/display/intel_dp_mst.c  |  1 +
 drivers/gpu/drm/i915/display/intel_hdmi.c    |  1 +
 4 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 50c11b8770a7..e3e98c959cb4 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -10158,6 +10158,21 @@ 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;
@@ -10465,9 +10480,12 @@ static int intel_atomic_commit(struct drm_device *dev,
 		if (crtc) {
 			struct intel_crtc_state *new_crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
 			new_conn_state->active_bpc = new_crtc_state->pipe_bpp / 3;
+			new_conn_state->active_color_format = convert_intel_output_format_into_drm_color_format(new_crtc_state->output_format);
 		}
-		else
+		else {
 			new_conn_state->active_bpc = 0;
+			new_conn_state->active_color_format = 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 67826ba976ed..7d58bc7972d0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -4674,10 +4674,12 @@ 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 5a1869dc2210..9143adccb5d0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -847,6 +847,7 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
 	if (connector->max_bpc_property) {
 		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);
 	}
 
 	return connector;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 8af78b27b6ce..0b57d924987e 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2466,6 +2466,7 @@ 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