From: Fangzhi Zuo <Jerry.Zuo@amd.com>
Date: Tue, 28 Apr 2026 20:53:29 +0000 (-0400)
Subject: drm/amd/display: add HDMI 2.1 Compliance Support
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7e5760f084d06ca57e46e4dbf7ef08f03f857be8;p=thirdparty%2Flinux.git

drm/amd/display: add HDMI 2.1 Compliance Support

Add force yuv format from igt for compliance test.

Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

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 8ef40fe81013f..06b674129f4d7 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6978,18 +6978,26 @@ static void fill_stream_properties_from_drm_display_mode(
 	timing_out->v_border_bottom = 0;
 	/* TODO: un-hardcode */
 	if (drm_mode_is_420_only(info, mode_in)
-			&& stream->signal == SIGNAL_TYPE_HDMI_TYPE_A)
+			&& (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A ||
+			    stream->signal == SIGNAL_TYPE_HDMI_FRL)
+			&& aconnector
+			&& aconnector->force_yuv_pixel_format == PIXEL_ENCODING_YCBCR420)
 		timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420;
 	else if (drm_mode_is_420_also(info, mode_in)
 			&& aconnector
-			&& aconnector->force_yuv420_output)
+			&& (aconnector->force_yuv_pixel_format == PIXEL_ENCODING_YCBCR420
+			|| aconnector->force_yuv420_output))
 		timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420;
 	else if ((connector->display_info.color_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR422))
 			&& aconnector
-			&& aconnector->force_yuv422_output)
+			&& (aconnector->force_yuv_pixel_format == PIXEL_ENCODING_YCBCR422
+			|| aconnector->force_yuv422_output))
 		timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR422;
 	else if ((connector->display_info.color_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR444))
-			&& stream->signal == SIGNAL_TYPE_HDMI_TYPE_A)
+			&& (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A ||
+			    stream->signal == SIGNAL_TYPE_HDMI_FRL)
+			&& aconnector
+			&& aconnector->force_yuv_pixel_format == PIXEL_ENCODING_YCBCR444)
 		timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR444;
 	else
 		timing_out->pixel_encoding = PIXEL_ENCODING_RGB;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index e92b3bc844695..d0cad3bfe697b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -848,6 +848,7 @@ struct amdgpu_dm_connector {
 	bool fake_enable;
 	bool force_yuv420_output;
 	bool force_yuv422_output;
+	uint8_t force_yuv_pixel_format;
 	struct dsc_preferred_settings dsc_settings;
 	struct psr_caps psr_caps;
 	union dp_downstream_port_present mst_downstream_port_present;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index df6c54d84b8f0..7db38ad3f8487 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -3142,6 +3142,7 @@ static int force_yuv420_output_set(void *data, u64 val)
 	struct amdgpu_dm_connector *connector = data;
 
 	connector->force_yuv420_output = (bool)val;
+	connector->force_yuv_pixel_format = PIXEL_ENCODING_YCBCR420;
 
 	return 0;
 }
@@ -3161,6 +3162,31 @@ static int force_yuv420_output_get(void *data, u64 *val)
 DEFINE_DEBUGFS_ATTRIBUTE(force_yuv420_output_fops, force_yuv420_output_get,
 			 force_yuv420_output_set, "%llu\n");
 
+static int force_yuv422_output_set(void *data, u64 val)
+{
+      struct amdgpu_dm_connector *connector = data;
+
+      connector->force_yuv422_output = (bool)val;
+      connector->force_yuv_pixel_format = PIXEL_ENCODING_YCBCR422;
+
+      return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(force_yuv422_output_fops, NULL,
+                       force_yuv422_output_set, "%llu\n");
+
+static int force_yuv444_output_set(void *data, u64 val)
+{
+      struct amdgpu_dm_connector *connector = data;
+
+      connector->force_yuv_pixel_format = PIXEL_ENCODING_YCBCR444;
+
+      return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(force_yuv444_output_fops, NULL,
+                       force_yuv444_output_set, "%llu\n");
+
 /*
  *  Read Replay state
  */
@@ -3610,6 +3636,8 @@ static const struct {
 	const struct file_operations *fops;
 } connector_debugfs_entries[] = {
 		{"force_yuv420_output", &force_yuv420_output_fops},
+		{"force_yuv422_output", &force_yuv422_output_fops},
+		{"force_yuv444_output", &force_yuv444_output_fops},
 		{"trigger_hotplug", &trigger_hotplug_debugfs_fops},
 		{"internal_display", &internal_display_fops},
 		{"odm_combine_segments", &odm_combine_segments_fops}