[PATCH 01/60] drm/edid: Add flag to drm_display_info to identify HDMI sinks

[Laurent Pinchart]

The drm_display_info structure contains many fields related to HDMI
sinks, but none that identifies if a sink compliant with CEA-861 (EDID)
shall be treated as an HDMI sink or a DVI sink. Add such a flag, and
populate it according to section 8.3.3 ("DVI/HDMI Device
Discrimination") of the HDMI v1.3 specification.

Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 drivers/gpu/drm/drm_edid.c  | 3 +++
 include/drm/drm_connector.h | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 82a4ceed3fcf..d2e7a5334c3f 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -4559,6 +4559,8 @@ drm_parse_hdmi_vsdb_video(struct drm_connector *connector, const u8 *db)
 	struct drm_display_info *info = &connector->display_info;
 	u8 len = cea_db_payload_len(db);
 
+	info->is_hdmi = true;
+
 	if (len >= 6)
 		info->dvi_dual = db[6] & 1;
 	if (len >= 7)
@@ -4627,6 +4629,7 @@ drm_reset_display_info(struct drm_connector *connector)
 	info->cea_rev = 0;
 	info->max_tmds_clock = 0;
 	info->dvi_dual = false;
+	info->is_hdmi = false;
 	info->has_hdmi_infoframe = false;
 	info->rgb_quant_range_selectable = false;
 	memset(&info->hdmi, 0, sizeof(info->hdmi));
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index ca745d9feaf5..e80ca0d149e5 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -426,6 +426,11 @@ struct drm_display_info {
 	 */
 	bool dvi_dual;
 
+	/**
+	 * @is_hdmi: True if the sink is an HDMI device.
+	 */
+	bool is_hdmi;
+
 	/**
 	 * @has_hdmi_infoframe: Does the sink support the HDMI infoframe?
 	 */
-- 
Regards,

Laurent Pinchart