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@ideasonboard.com Reviewed-by: Andrzej Hajda a.hajda@samsung.com Reviewed-by: Ville Syrjälä ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Acked-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- Documentation/gpu/todo.rst | 14 ++++++++++++++ drivers/gpu/drm/drm_edid.c | 6 ++++++ include/drm/drm_connector.h | 8 ++++++++ 3 files changed, 28 insertions(+)
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index 370ac678106e..ccf5e8e34222 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -407,6 +407,20 @@ Contact: Daniel Vetter
Level: Intermediate
+Replace drm_detect_hdmi_monitor() with drm_display_info.is_hdmi +--------------------------------------------------------------- + +Once EDID is parsed, the monitor HDMI support information is available through +drm_display_info.is_hdmi. Many drivers still call drm_detect_hdmi_monitor() to +retrieve the same information, which is less efficient. + +Audit each individual driver calling drm_detect_hdmi_monitor() and switch to +drm_display_info.is_hdmi if applicable. + +Contact: Laurent Pinchart, respective driver maintainers + +Level: Intermediate + Core refactorings =================
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 5f3bc3486fde..ad41764a4ebe 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4647,6 +4647,9 @@ EXPORT_SYMBOL(drm_av_sync_delay); * * Parse the CEA extension according to CEA-861-B. * + * Drivers that have added the modes parsed from EDID to drm_display_info + * should use &drm_display_info.is_hdmi instead of calling this function. + * * Return: True if the monitor is HDMI, false if not or unknown. */ bool drm_detect_hdmi_monitor(struct edid *edid) @@ -4881,6 +4884,8 @@ 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) @@ -4949,6 +4954,7 @@ 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 c3bd5262db9c..0df7a95ca5d9 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -434,6 +434,14 @@ struct drm_display_info { */ bool dvi_dual;
+ /** + * @is_hdmi: True if the sink is an HDMI device. + * + * This field shall be used instead of calling + * drm_detect_hdmi_monitor() when possible. + */ + bool is_hdmi; + /** * @has_hdmi_infoframe: Does the sink support the HDMI infoframe? */