On Wed, 31 Aug 2022, Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> wrote: > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > On some systems the panel reports alternate modes with > different blanking periods. If the EDID reports them and VBT > doesn't tell us otherwise then I can't really see why they > should be rejected. So allow their use for the purposes of > static DRRS. > > For seamless DRRS we still require a much more exact match > of course. But that logic only kicks in when selecting the > downclock mode (or in the future when determining whether > we can do a seamless refresh rate change due to a user > modeset). > > Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/6374 > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx> > --- > drivers/gpu/drm/i915/display/intel_panel.c | 25 ++++++---------------- > 1 file changed, 6 insertions(+), 19 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c > index 237a40623dd7..cb44984bb9a2 100644 > --- a/drivers/gpu/drm/i915/display/intel_panel.c > +++ b/drivers/gpu/drm/i915/display/intel_panel.c > @@ -81,15 +81,14 @@ static bool is_alt_drrs_mode(const struct drm_display_mode *mode, > mode->clock != preferred_mode->clock; > } > > -static bool is_alt_vrr_mode(const struct drm_display_mode *mode, > - const struct drm_display_mode *preferred_mode) > +static bool is_alt_fixed_mode(const struct drm_display_mode *mode, > + const struct drm_display_mode *preferred_mode) > { > return drm_mode_match(mode, preferred_mode, > DRM_MODE_MATCH_FLAGS | > DRM_MODE_MATCH_3D_FLAGS) && > mode->hdisplay == preferred_mode->hdisplay && > - mode->vdisplay == preferred_mode->vdisplay && > - mode->clock != preferred_mode->clock; > + mode->vdisplay == preferred_mode->vdisplay; > } > > const struct drm_display_mode * > @@ -172,19 +171,7 @@ int intel_panel_compute_config(struct intel_connector *connector, > return 0; > } > > -static bool is_alt_fixed_mode(const struct drm_display_mode *mode, > - const struct drm_display_mode *preferred_mode, > - bool has_vrr) > -{ > - /* is_alt_drrs_mode() is a subset of is_alt_vrr_mode() */ > - if (has_vrr) > - return is_alt_vrr_mode(mode, preferred_mode); > - else > - return is_alt_drrs_mode(mode, preferred_mode); > -} > - > -static void intel_panel_add_edid_alt_fixed_modes(struct intel_connector *connector, > - bool has_vrr) > +static void intel_panel_add_edid_alt_fixed_modes(struct intel_connector *connector) > { > struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > const struct drm_display_mode *preferred_mode = > @@ -192,7 +179,7 @@ static void intel_panel_add_edid_alt_fixed_modes(struct intel_connector *connect > struct drm_display_mode *mode, *next; > > list_for_each_entry_safe(mode, next, &connector->base.probed_modes, head) { > - if (!is_alt_fixed_mode(mode, preferred_mode, has_vrr)) > + if (!is_alt_fixed_mode(mode, preferred_mode)) > continue; > > drm_dbg_kms(&dev_priv->drm, > @@ -255,7 +242,7 @@ void intel_panel_add_edid_fixed_modes(struct intel_connector *connector, > { > intel_panel_add_edid_preferred_mode(connector); > if (intel_panel_preferred_fixed_mode(connector) && (has_drrs || has_vrr)) > - intel_panel_add_edid_alt_fixed_modes(connector, has_vrr); > + intel_panel_add_edid_alt_fixed_modes(connector); > intel_panel_destroy_probed_modes(connector); > } -- Jani Nikula, Intel Open Source Graphics Center
