drm/i915: Fix watermark calculations for DG2 CCS modifiers

Take the DG2 CCS modifiers into account when calculating the
watermarks. Othwerwise we'll calculate the watermarks thinking these
tile-4 modifiers are linear.

The rc_surface part is actually a nop since that is not used
for any glk+ platform.

Cc: stable@vger.kernel.org
Fixes: 4c3afa72138c ("drm/i915/dg2: Add support for DG2 render and media compression")
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221003111544.8007-5-ville.syrjala@linux.intel.com
(cherry picked from commit f25d9f81a8e09ace4f04106995550bae1f522143)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
index 3676662..a120d49 100644 (file)
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -1713,13 +1713,17 @@ skl_compute_wm_params(const struct intel_crtc_state *crtc_state,
                      modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
                      modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
                      modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS ||
-                     modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC;
+                     modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC ||
+                     modifier == I915_FORMAT_MOD_4_TILED_DG2_RC_CCS ||
+                     modifier == I915_FORMAT_MOD_4_TILED_DG2_MC_CCS;
        wp->x_tiled = modifier == I915_FORMAT_MOD_X_TILED;
        wp->rc_surface = modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
                         modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
                         modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
                         modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS ||
-                        modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC;
+                        modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC ||
+                        modifier == I915_FORMAT_MOD_4_TILED_DG2_RC_CCS ||
+                        modifier == I915_FORMAT_MOD_4_TILED_DG2_MC_CCS;
        wp->is_planar = intel_format_info_is_yuv_semiplanar(format, modifier);
 
        wp->width = width;