linux-kernel - [PATCH v5 10/17] drm/amd/display: Add handling for new "active color range" property

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Message-Id: <20210630151018.330354-11-wse@tuxedocomputers.com>
Date:   Wed, 30 Jun 2021 17:10:11 +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,
        emil.l.velikov@...il.com
Cc:     Werner Sembach <wse@...edocomputers.com>
Subject: [PATCH v5 10/17] drm/amd/display: Add handling for new "active color range" property

This commit implements the "active color range" drm property for the AMD
GPU driver.

Signed-off-by: Werner Sembach <wse@...edocomputers.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 33 +++++++++++++++++++
 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |  4 +++
 2 files changed, 37 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 098f3d53e681..b4acedac1ac9 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6728,6 +6728,33 @@ static int convert_dc_pixel_encoding_into_drm_color_format(
 	return 0;
 }
 
+static int convert_dc_color_space_into_drm_mode_color_range(enum dc_color_space color_space)
+{
+	if (color_space == COLOR_SPACE_SRGB ||
+	    color_space == COLOR_SPACE_XR_RGB ||
+	    color_space == COLOR_SPACE_MSREF_SCRGB ||
+	    color_space == COLOR_SPACE_2020_RGB_FULLRANGE ||
+	    color_space == COLOR_SPACE_ADOBERGB ||
+	    color_space == COLOR_SPACE_DCIP3 ||
+	    color_space == COLOR_SPACE_DOLBYVISION ||
+	    color_space == COLOR_SPACE_YCBCR601 ||
+	    color_space == COLOR_SPACE_XV_YCC_601 ||
+	    color_space == COLOR_SPACE_YCBCR709 ||
+	    color_space == COLOR_SPACE_XV_YCC_709 ||
+	    color_space == COLOR_SPACE_2020_YCBCR ||
+	    color_space == COLOR_SPACE_YCBCR709_BLACK ||
+	    color_space == COLOR_SPACE_DISPLAYNATIVE ||
+	    color_space == COLOR_SPACE_APPCTRL ||
+	    color_space == COLOR_SPACE_CUSTOMPOINTS)
+		return DRM_MODE_COLOR_RANGE_FULL;
+	if (color_space == COLOR_SPACE_SRGB_LIMITED ||
+	    color_space == COLOR_SPACE_2020_RGB_LIMITEDRANGE ||
+	    color_space == COLOR_SPACE_YCBCR601_LIMITED ||
+	    color_space == COLOR_SPACE_YCBCR709_LIMITED)
+		return DRM_MODE_COLOR_RANGE_LIMITED_16_235;
+	return DRM_MODE_COLOR_RANGE_UNSET;
+}
+
 static int dm_encoder_helper_atomic_check(struct drm_encoder *encoder,
 					  struct drm_crtc_state *crtc_state,
 					  struct drm_connector_state *conn_state)
@@ -7730,6 +7757,7 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm,
 		drm_connector_attach_max_bpc_property(&aconnector->base, 8, 16);
 		drm_connector_attach_active_bpc_property(&aconnector->base, 8, 16);
 		drm_connector_attach_active_color_format_property(&aconnector->base);
+		drm_connector_attach_active_color_range_property(&aconnector->base);
 	}
 
 	/* This defaults to the max in the range, but we want 8bpc for non-edp. */
@@ -9118,10 +9146,15 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
 				drm_connector_set_active_color_format_property(connector,
 					convert_dc_pixel_encoding_into_drm_color_format(
 						dm_new_crtc_state->stream->timing.pixel_encoding));
+				drm_connector_set_active_color_range_property(connector,
+					convert_dc_color_space_into_drm_mode_color_range(
+						dm_new_crtc_state->stream->output_color_space));
 			}
 		} else {
 			drm_connector_set_active_bpc_property(connector, 0);
 			drm_connector_set_active_color_format_property(connector, 0);
+			drm_connector_set_active_color_range_property(connector,
+								      DRM_MODE_COLOR_RANGE_UNSET);
 		}
 	}
 
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 13151d13aa73..b5d57bbbdd20 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -417,6 +417,10 @@ dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
 	if (connector->active_color_format_property)
 		drm_connector_attach_active_color_format_property(&aconnector->base);
 
+	connector->active_color_range_property = master->base.active_color_range_property;
+	if (connector->active_color_range_property)
+		drm_connector_attach_active_color_range_property(&aconnector->base);
+
 	connector->vrr_capable_property = master->base.vrr_capable_property;
 	if (connector->vrr_capable_property)
 		drm_connector_attach_vrr_capable_property(connector);
-- 
2.25.1