[PATCH 3/7] drm/edid: Allow to ignore the HDMI monitor mode

[Maxime Ripard]

Signed-off-by: Maxime Ripard <maxime.ripard at bootlin.com>
---
 drivers/gpu/drm/drm_edid.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index c0258b011bb2..2f6df10ed9f1 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -4156,6 +4156,11 @@ int drm_av_sync_delay(struct drm_connector *connector,
 }
 EXPORT_SYMBOL(drm_av_sync_delay);
 
+static bool force_dvi_monitor = false;
+module_param(force_dvi_monitor, bool, 0644);
+MODULE_PARM_DESC(force_dvi_monitor,
+		 "Ignore the EDID and always consider the monitor as DVI instead of HDMI");
+
 /**
  * drm_detect_hdmi_monitor - detect whether monitor is HDMI
  * @edid: monitor EDID information
@@ -4170,6 +4175,9 @@ bool drm_detect_hdmi_monitor(struct edid *edid)
 	int i;
 	int start_offset, end_offset;
 
+	if (force_dvi_monitor)
+		return false;
+
 	edid_ext = drm_find_cea_extension(edid);
 	if (!edid_ext)
 		return false;
-- 
git-series 0.9.1