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drm/edid: Add flag to drm_display_info to identify HDMI sinks

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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>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-4-laurent.pinchart@ideasonboard.com
This commit is contained in:
Laurent Pinchart
2020-02-26 13:24:23 +02:00
committed by Tomi Valkeinen
parent b35f90f2d4
commit a92d083d08
3 changed files with 28 additions and 0 deletions
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14
Documentation/gpu/todo.rst
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@@ -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
=================