diff mbox series

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

Message ID 20220826213501.31490-6-ville.syrjala@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series drm/edid: Range descriptor stuff | expand

Commit Message

Ville Syrjala Aug. 26, 2022, 9:34 p.m. UTC
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(-)

Comments

Jani Nikula Aug. 29, 2022, 8:58 a.m. UTC | #1
On Sat, 27 Aug 2022, Ville Syrjala <ville.syrjala@linux.intel.com> wrote:
> 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>

Makes sense, at least for sane EDIDs. :p

Reviewed-by: Jani Nikula <jani.nikula@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);
diff mbox series

Patch

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);