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drm/i915: Tighten DRRS capability reporting

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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: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221003113249.16213-6-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2022-10-03 14:32:48 +03:00
parent 9519c86523
commit d1af925ba0
1 changed files with 17 additions and 2 deletions
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19
drivers/gpu/drm/i915/display/intel_panel.c
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@ -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;