Commit d1af925b authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Tighten DRRS capability reporting 



Only report DRRS capability for the connector if its fixed_modes
list contains at least two modes capable of seamless DRRS switch
between them.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221003113249.16213-6-ville.syrjala@linux.intel.com


Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
parent 9519c865

drivers/gpu/drm/i915/display/intel_panel.c

+17 −2
Original line number Diff line number Diff line
@@ -147,10 +147,25 @@ int intel_panel_get_modes(struct intel_connector *connector) 
	return num_modes;

}



static bool has_drrs_modes(struct intel_connector *connector)

{

	const struct drm_display_mode *mode1;



	list_for_each_entry(mode1, &connector->panel.fixed_modes, head) {

		const struct drm_display_mode *mode2 = mode1;



		list_for_each_entry_continue(mode2, &connector->panel.fixed_modes, head) {

			if (is_alt_drrs_mode(mode1, mode2))

				return true;

		}

	}



	return false;

}



enum drrs_type intel_panel_drrs_type(struct intel_connector *connector)

{

	if (list_empty(&connector->panel.fixed_modes) ||

	    list_is_singular(&connector->panel.fixed_modes))

	if (!has_drrs_modes(connector))

		return DRRS_TYPE_NONE;



	return connector->panel.vbt.drrs_type;