drm/i915/fbc: Rewrite the FBC tiling check a bit

Write the tiling check in a nicer form. No functional
changes due to Y-tile scanout being a gen9+ feature.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210702204603.596-2-ville.syrjala@linux.intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index e4d412d395c3474c31e2f402f9bac790aec13617..c4552e8395a065b889bbbcb804cea69892fd7efb 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -675,11 +675,9 @@ static bool tiling_is_valid(struct drm_i915_private *dev_priv,
 {
        switch (modifier) {
        case DRM_FORMAT_MOD_LINEAR:
-               if (DISPLAY_VER(dev_priv) >= 9)
-                       return true;
-               return false;
-       case I915_FORMAT_MOD_X_TILED:
        case I915_FORMAT_MOD_Y_TILED:
+               return DISPLAY_VER(dev_priv) >= 9;
+       case I915_FORMAT_MOD_X_TILED:
                return true;
        default:
                return false;