[Intel-gfx] [PATCH 05/11] drm/edid: Only parse VRR range for continuous frequency displays

Ville Syrjala
2022-08-26T21:36:03Z

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Since we only use the parsed vrefresh range to determine
if VRR should be supported we should only accept continuous
frequency displays here.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
drivers/gpu/drm/drm_edid.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 856d304a1354..b459fdf12b58 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -6064,7 +6064,10 @@ static void drm_get_vrr_range(struct drm_connector *connector,
.drm_edid = drm_edid,
};

- if (!version_greater(drm_edid, 1, 1))
+ if (!version_greater(drm_edid, 1, 3))
+ return;
+
+ if (!(drm_edid->edid->features & DRM_EDID_FEATURE_CONTINUOUS_FREQ))
return;

drm_for_each_detailed_block(drm_edid, get_vrr_range, &closure);
--
2.35.1