From: Ville Syrjälä <ville.syrj...@linux.intel.com>
Make sure our choice of downclock mode respects the VBT
seameless DRRS min refresh rate limit.
v2: s/vrefesh/vrefresh/ (Jani)
Reviewed-by: Jani Nikula <jani.nik...@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_panel.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_panel.c
b/drivers/gpu/drm/i915/display/intel_panel.c
index 03398feb6676..d1d1b59102d6 100644
--- a/drivers/gpu/drm/i915/display/intel_panel.c
+++ b/drivers/gpu/drm/i915/display/intel_panel.c
@@ -75,13 +75,17 @@ const struct drm_display_mode *
intel_panel_downclock_mode(struct intel_connector *connector,
const struct drm_display_mode *adjusted_mode)
{
+ struct drm_i915_private *i915 = to_i915(connector->base.dev);
const struct drm_display_mode *fixed_mode, *best_mode = NULL;
- int vrefresh = drm_mode_vrefresh(adjusted_mode);
+ int min_vrefresh = i915->vbt.seamless_drrs_min_refresh_rate;
+ int max_vrefresh = drm_mode_vrefresh(adjusted_mode);
/* pick the fixed_mode with the lowest refresh rate */
list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head) {
- if (drm_mode_vrefresh(fixed_mode) < vrefresh) {
- vrefresh = drm_mode_vrefresh(fixed_mode);
+ int vrefresh = drm_mode_vrefresh(fixed_mode);
+
+ if (vrefresh >= min_vrefresh && vrefresh < max_vrefresh) {
+ max_vrefresh = vrefresh;
best_mode = fixed_mode;
}
}
--
2.35.1
