drm/amd/display: Hook up 'content type' property for HDMI

Implements the 'content type' property for HDMI connectors.
Verified by checking the avi infoframe on a connected TV.

This also simplifies a lot of the code in that area as well, there were
a lot of temp variables doing very little and unnecessary logic
that was quite confusing.

It is not necessary to check for support in the EDID before sending a
'content type' value in the avi infoframe also.

v2:
- rebase to amd-staging-drm-next
- mark CRTC state for reset if content_type differs

Reviewed-by: Harry Wentland <harry.wentland@amd.com> (v1)
Signed-off-by: Joshua Ashton <joshua@froggi.es>
Co-developed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Melissa Wen <mwen@igalia.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -5457,6 +5457,24 @@ get_output_color_space(const struct dc_crtc_timing *dc_crtc_timing,
 	return color_space;
 }
 
+static enum display_content_type
+get_output_content_type(const struct drm_connector_state *connector_state)
+{
+	switch (connector_state->content_type) {
+	default:
+	case DRM_MODE_CONTENT_TYPE_NO_DATA:
+		return DISPLAY_CONTENT_TYPE_NO_DATA;
+	case DRM_MODE_CONTENT_TYPE_GRAPHICS:
+		return DISPLAY_CONTENT_TYPE_GRAPHICS;
+	case DRM_MODE_CONTENT_TYPE_PHOTO:
+		return DISPLAY_CONTENT_TYPE_PHOTO;
+	case DRM_MODE_CONTENT_TYPE_CINEMA:
+		return DISPLAY_CONTENT_TYPE_CINEMA;
+	case DRM_MODE_CONTENT_TYPE_GAME:
+		return DISPLAY_CONTENT_TYPE_GAME;
+	}
+}
+
 static bool adjust_colour_depth_from_display_info(
 	struct dc_crtc_timing *timing_out,
 	const struct drm_display_info *info)
@@ -5591,6 +5609,7 @@ static void fill_stream_properties_from_drm_display_mode(
 	}
 
 	stream->output_color_space = get_output_color_space(timing_out, connector_state);
+	stream->content_type = get_output_content_type(connector_state);
 }
 
 static void fill_audio_info(struct audio_info *audio_info,
@@ -6791,6 +6810,14 @@ amdgpu_dm_connector_atomic_check(struct drm_connector *conn,
 		new_crtc_state->mode_changed = true;
 	}
 
+	if (new_con_state->content_type != old_con_state->content_type) {
+		new_crtc_state = drm_atomic_get_crtc_state(state, crtc);
+		if (IS_ERR(new_crtc_state))
+			return PTR_ERR(new_crtc_state);
+
+		new_crtc_state->mode_changed = true;
+	}
+
 	if (!drm_connector_atomic_hdr_metadata_equal(old_con_state, new_con_state)) {
 		struct dc_info_packet hdr_infopacket;
 
@@ -7426,6 +7453,11 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm,
 				adev->mode_info.abm_level_property, 0);
 	}
 
+	if (connector_type == DRM_MODE_CONNECTOR_HDMIA) {
+		/* Content Type is currently only implemented for HDMI. */
+		drm_connector_attach_content_type_property(&aconnector->base);
+	}
+
 	if (connector_type == DRM_MODE_CONNECTOR_HDMIA) {
 		if (!drm_mode_create_hdmi_colorspace_property(&aconnector->base, supported_colorspaces))
 			drm_connector_attach_colorspace_property(&aconnector->base);

drivers/gpu/drm/amd/display/dc/core/dc_resource.c

@@ -3928,14 +3928,9 @@ static void set_avi_info_frame(
 	uint32_t pixel_encoding = 0;
 	enum scanning_type scan_type = SCANNING_TYPE_NODATA;
 	enum dc_aspect_ratio aspect = ASPECT_RATIO_NO_DATA;
-	bool itc = false;
-	uint8_t itc_value = 0;
-	uint8_t cn0_cn1 = 0;
-	unsigned int cn0_cn1_value = 0;
 	uint8_t *check_sum = NULL;
 	uint8_t byte_index = 0;
 	union hdmi_info_packet hdmi_info;
-	union display_content_support support = {0};
 	unsigned int vic = pipe_ctx->stream->timing.vic;
 	unsigned int rid = pipe_ctx->stream->timing.rid;
 	unsigned int fr_ind = pipe_ctx->stream->timing.fr_index;
@@ -4045,49 +4040,27 @@ static void set_avi_info_frame(
 	/* Active Format Aspect ratio - same as Picture Aspect Ratio. */
 	hdmi_info.bits.R0_R3 = ACTIVE_FORMAT_ASPECT_RATIO_SAME_AS_PICTURE;
 
-	/* TODO: un-hardcode cn0_cn1 and itc */
-
-	cn0_cn1 = 0;
-	cn0_cn1_value = 0;
-
-	itc = true;
-	itc_value = 1;
-
-	support = stream->content_support;
-
-	if (itc) {
-		if (!support.bits.valid_content_type) {
-			cn0_cn1_value = 0;
-		} else {
-			if (cn0_cn1 == DISPLAY_CONTENT_TYPE_GRAPHICS) {
-				if (support.bits.graphics_content == 1) {
-					cn0_cn1_value = 0;
-				}
-			} else if (cn0_cn1 == DISPLAY_CONTENT_TYPE_PHOTO) {
-				if (support.bits.photo_content == 1) {
-					cn0_cn1_value = 1;
-				} else {
-					cn0_cn1_value = 0;
-					itc_value = 0;
-				}
-			} else if (cn0_cn1 == DISPLAY_CONTENT_TYPE_CINEMA) {
-				if (support.bits.cinema_content == 1) {
-					cn0_cn1_value = 2;
-				} else {
-					cn0_cn1_value = 0;
-					itc_value = 0;
-				}
-			} else if (cn0_cn1 == DISPLAY_CONTENT_TYPE_GAME) {
-				if (support.bits.game_content == 1) {
-					cn0_cn1_value = 3;
-				} else {
-					cn0_cn1_value = 0;
-					itc_value = 0;
-				}
-			}
-		}
-		hdmi_info.bits.CN0_CN1 = cn0_cn1_value;
-		hdmi_info.bits.ITC = itc_value;
+	switch (stream->content_type) {
+	case DISPLAY_CONTENT_TYPE_NO_DATA:
+		hdmi_info.bits.CN0_CN1 = 0;
+		hdmi_info.bits.ITC = 0;
+		break;
+	case DISPLAY_CONTENT_TYPE_GRAPHICS:
+		hdmi_info.bits.CN0_CN1 = 0;
+		hdmi_info.bits.ITC = 1;
+		break;
+	case DISPLAY_CONTENT_TYPE_PHOTO:
+		hdmi_info.bits.CN0_CN1 = 1;
+		hdmi_info.bits.ITC = 1;
+		break;
+	case DISPLAY_CONTENT_TYPE_CINEMA:
+		hdmi_info.bits.CN0_CN1 = 2;
+		hdmi_info.bits.ITC = 1;
+		break;
+	case DISPLAY_CONTENT_TYPE_GAME:
+		hdmi_info.bits.CN0_CN1 = 3;
+		hdmi_info.bits.ITC = 1;
+		break;
 	}
 
 	if (stream->qs_bit == 1) {

drivers/gpu/drm/amd/display/dc/dc_stream.h

@@ -212,6 +212,7 @@ struct dc_stream_state {
 	struct dc_csc_transform csc_color_matrix;
 
 	enum dc_color_space output_color_space;
+	enum display_content_type content_type;
 	enum dc_dither_option dither_option;
 
 	enum view_3d_format view_format;