[Intel-gfx] [PATCH v2 2/6] drm/i915: Fix watermark calculations for gen12+ MC CCS modifier

[Ville Syrjala]

From: Ville Syrjälä <ville.syrj...@linux.intel.com>

Take the gen12+ MC CCS modifier into account when calculating the
watermarks. Othwerwise we'll calculate the watermarks thinking this
Y-tiled modifier is linear.

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

v2: Split RC CCS vs. MC CCS to separate patches

Cc: sta...@vger.kernel.org
Fixes: 2dfbf9d2873a ("drm/i915/tgl: Gen-12 display can decompress surfaces 
compressed by the media engine")
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikk...@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
 drivers/gpu/drm/i915/display/skl_watermark.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c 
b/drivers/gpu/drm/i915/display/skl_watermark.c
index 6ce1213c18b3..1b8f5970cbf7 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -1711,11 +1711,13 @@ skl_compute_wm_params(const struct intel_crtc_state 
*crtc_state,
                      modifier == I915_FORMAT_MOD_Yf_TILED ||
                      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_RC_CCS ||
+                     modifier == I915_FORMAT_MOD_Y_TILED_GEN12_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_RC_CCS ||
+                        modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS;
        wp->is_planar = intel_format_info_is_yuv_semiplanar(format, modifier);
 
        wp->width = width;
-- 
2.35.1