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@xxxxxxxxxxxxxxxx>
---
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
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