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> DRM_ENUM_NAME_FN(drm_get_vrr_mode_name, drm_vrr_mode_enum_list) > > @@ -2593,6 +2594,11 @@ EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); > * - Game - set display to game mode if display supports it, > * regardless of CRTC state > * - Off - set display to VRR disabled mode, regardless of CRTC state > + * - Media - a "media" VRR mode that only supports a select number of > + * common media refresh rates as fixed targets, but does so with > + * possibly better display-side processing. In the HDMI display > + * protocol, this is QMS (Quick Media Switching), though the mode > + * enum itself is vendor-agnostic > * > * VRR Limiter/Target Properties > * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h > index 4801bb2769e1..41f272afbb1e 100644 > --- a/include/drm/drm_connector.h > +++ b/include/drm/drm_connector.h > @@ -829,6 +829,8 @@ enum vrr_display_mode { > VRR_DISPLAY_MODE_GAME = 0, > /** @VRR_DISPLAY_MODE_OFF: Turn off VRR on the display */ > VRR_DISPLAY_MODE_OFF, > + /** @VRR_DISPLAY_MODE_MEDIA: Protocol-agnostic fixed rate media mode */ > + VRR_DISPLAY_MODE_MEDIA, > /** @VRR_DISPLAY_MODE_COUNT: Sentinel, not a valid mode, keep last */ > VRR_DISPLAY_MODE_COUNT > }; > @@ -1241,6 +1243,12 @@ struct drm_connector_hdmi_state { > * deliberately not requested by the helper. > */ > bool scrambler_needed; > + > + /** > + * @qms_tfr_byte: Target frame rate byte for HDMI QMS, or 0 if QMS is > + * not in use. > + */ > + u8 qms_tfr_byte; > }; > > /** > @@ -2270,6 +2278,12 @@ struct drm_connector_hdmi { > */ > bool scrambler_enabled; > > + /** > + * @qms_supported: Whether the connector supports HDMI Quick Media > + * Switching (QMS) on the source side, irrespective of display support. > + */ > + bool qms_supported; I'm not really understanding why a source-side capability is being captured at the connector level. The way I envisioned this is that source-side Media-VRR support can be determined by whether the driver attaches the CRTC frame limit properties. The ability to maintain an arbitrary fixed refresh rate (implied by attaching the properties) should be the only QMS-specific requirement the source needs to support. Thanks, Vidith > + > /** > * @scdc_work: Work item currently used to monitor sink-side scrambling > * status and retry setup if the sink resets it. > > -- > 2.56.0 > >