From: Ville Syrjälä Date: Wed, 4 May 2022 15:04:40 +0000 (+0300) Subject: drm/i915: Respect VBT seamless DRRS min refresh rate X-Git-Tag: v5.19-rc1~153^2~7^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=949665a6e237a6fd49ff207e3876d71b20b7e9f2;p=thirdparty%2Fkernel%2Flinux.git drm/i915: Respect VBT seamless DRRS min refresh rate 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 Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20220504150440.13748-10-ville.syrjala@linux.intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c index 03398feb66766..d1d1b59102d69 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; } }