On Thu, 31 Mar 2022, Ville Syrjala <[email protected]> wrote: > From: Ville Syrjälä <[email protected]> > > Remove the "two fixed modes only" limit and grab as many > downclock modes from the EDID as we can find. > > Signed-off-by: Ville Syrjälä <[email protected]>
Reviewed-by: Jani Nikula <[email protected]> > --- > drivers/gpu/drm/i915/display/intel_panel.c | 42 +++++++--------------- > 1 file changed, 12 insertions(+), 30 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_panel.c > b/drivers/gpu/drm/i915/display/intel_panel.c > index 5d08b2bf27ec..d359c8050fdc 100644 > --- a/drivers/gpu/drm/i915/display/intel_panel.c > +++ b/drivers/gpu/drm/i915/display/intel_panel.c > @@ -159,42 +159,24 @@ static bool is_downclock_mode(const struct > drm_display_mode *downclock_mode, > downclock_mode->clock < fixed_mode->clock; > } > > -static void intel_panel_add_edid_downclock_mode(struct intel_connector > *connector) > +static void intel_panel_add_edid_downclock_modes(struct intel_connector > *connector) > { > struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > const struct drm_display_mode *fixed_mode = > intel_panel_preferred_fixed_mode(connector); > - struct drm_display_mode *scan, *best_mode = NULL; > - int best_clock = fixed_mode->clock; > - > - list_for_each_entry(scan, &connector->base.probed_modes, head) { > - /* > - * If one mode has the same resolution with the fixed_panel > - * mode while they have the different refresh rate, it means > - * that the reduced downclock is found. In such > - * case we can set the different FPx0/1 to dynamically select > - * between low and high frequency. > - */ > - if (is_downclock_mode(scan, fixed_mode) && > - scan->clock < best_clock) { > - /* > - * The downclock is already found. But we > - * expect to find the lower downclock. > - */ > - best_clock = scan->clock; > - best_mode = scan; > - } > - } > + struct drm_display_mode *mode, *next; > > - if (!best_mode) > - return; > + list_for_each_entry_safe(mode, next, &connector->base.probed_modes, > head) { > + if (!is_downclock_mode(mode, fixed_mode)) > + continue; > > - drm_dbg_kms(&dev_priv->drm, > - "[CONNECTOR:%d:%s] using EDID downclock mode: " > DRM_MODE_FMT "\n", > - connector->base.base.id, connector->base.name, > - DRM_MODE_ARG(best_mode)); > + drm_dbg_kms(&dev_priv->drm, > + "[CONNECTOR:%d:%s] using EDID downclock mode: " > DRM_MODE_FMT "\n", > + connector->base.base.id, connector->base.name, > + DRM_MODE_ARG(mode)); > > - list_move_tail(&best_mode->head, &connector->panel.fixed_modes); > + list_move_tail(&mode->head, &connector->panel.fixed_modes); > + } > } > > static void intel_panel_add_edid_fixed_mode(struct intel_connector > *connector) > @@ -243,7 +225,7 @@ void intel_panel_add_edid_fixed_modes(struct > intel_connector *connector, bool ha > { > intel_panel_add_edid_fixed_mode(connector); > if (intel_panel_preferred_fixed_mode(connector) && has_drrs) > - intel_panel_add_edid_downclock_mode(connector); > + intel_panel_add_edid_downclock_modes(connector); > intel_panel_destroy_probed_modes(connector); > } -- Jani Nikula, Intel Open Source Graphics Center
