[Intel-gfx] [PATCH v2 2/4] drm/i915/dg2: Add support for DG2 render and media compression

[Imre Deak]

From: Matt Roper <matthew.d.roper at intel.com>

Add support for DG2 render and media compression, for the description of
buffer layouts see the previous patch adding the corresponding
frame buffer modifiers.

v2:
  Display version fix [Imre]
v3:
  Split out modifier addition to separate patch.

Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
cc: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
Signed-off-by: Mika Kahola <mika.kahola at intel.com>
cc: Anshuman Gupta <anshuman.gupta at intel.com>
Signed-off-by: Juha-Pekka Heikkilä <juha-pekka.heikkila at intel.com>
Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
Signed-off-by: Imre Deak <imre.deak at intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220404133846.131401-3-imre.deak@intel.com
---
 drivers/gpu/drm/i915/display/intel_fb.c       | 13 ++++++++++
 .../drm/i915/display/skl_universal_plane.c    | 26 ++++++++++++++++---
 2 files changed, 35 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
index e9ad142ac40fa..447003a91160e 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.c
+++ b/drivers/gpu/drm/i915/display/intel_fb.c
@@ -141,6 +141,14 @@ struct intel_modifier_desc {
 
 static const struct intel_modifier_desc intel_modifiers[] = {
 	{
+		.modifier = I915_FORMAT_MOD_4_TILED_DG2_MC_CCS,
+		.display_ver = { 13, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_4 | INTEL_PLANE_CAP_CCS_MC,
+	}, {
+		.modifier = I915_FORMAT_MOD_4_TILED_DG2_RC_CCS,
+		.display_ver = { 13, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_4 | INTEL_PLANE_CAP_CCS_RC,
+	}, {
 		.modifier = I915_FORMAT_MOD_4_TILED,
 		.display_ver = { 13, 13 },
 		.plane_caps = INTEL_PLANE_CAP_TILING_4,
@@ -550,6 +558,8 @@ intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane)
 			return 128;
 		else
 			return 512;
+	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS:
+	case I915_FORMAT_MOD_4_TILED_DG2_MC_CCS:
 	case I915_FORMAT_MOD_4_TILED:
 		/*
 		 * Each 4K tile consists of 64B(8*8) subtiles, with
@@ -752,6 +762,9 @@ unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
 	case I915_FORMAT_MOD_4_TILED:
 	case I915_FORMAT_MOD_Yf_TILED:
 		return 1 * 1024 * 1024;
+	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS:
+	case I915_FORMAT_MOD_4_TILED_DG2_MC_CCS:
+		return 16 * 1024;
 	default:
 		MISSING_CASE(fb->modifier);
 		return 0;
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index c57fca1fe6788..b939c503bc6ff 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -773,6 +773,14 @@ static u32 skl_plane_ctl_tiling(u64 fb_modifier)
 		return PLANE_CTL_TILED_Y;
 	case I915_FORMAT_MOD_4_TILED:
 		return PLANE_CTL_TILED_4;
+	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS:
+		return PLANE_CTL_TILED_4 |
+			PLANE_CTL_RENDER_DECOMPRESSION_ENABLE |
+			PLANE_CTL_CLEAR_COLOR_DISABLE;
+	case I915_FORMAT_MOD_4_TILED_DG2_MC_CCS:
+		return PLANE_CTL_TILED_4 |
+			PLANE_CTL_MEDIA_DECOMPRESSION_ENABLE |
+			PLANE_CTL_CLEAR_COLOR_DISABLE;
 	case I915_FORMAT_MOD_Y_TILED_CCS:
 	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
 		return PLANE_CTL_TILED_Y | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
@@ -2168,6 +2176,10 @@ static bool gen12_plane_has_mc_ccs(struct drm_i915_private *i915,
 	if (IS_ADLP_DISPLAY_STEP(i915, STEP_A0, STEP_B0))
 		return false;
 
+	/* Wa_14013215631 */
+	if (IS_DG2_DISPLAY_STEP(i915, STEP_A0, STEP_C0))
+		return false;
+
 	return plane_id < PLANE_SPRITE4;
 }
 
@@ -2415,9 +2427,10 @@ skl_get_initial_plane_config(struct intel_crtc *crtc,
 	case PLANE_CTL_TILED_Y:
 		plane_config->tiling = I915_TILING_Y;
 		if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
-			fb->modifier = DISPLAY_VER(dev_priv) >= 12 ?
-				I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS :
-				I915_FORMAT_MOD_Y_TILED_CCS;
+			if (DISPLAY_VER(dev_priv) >= 12)
+				fb->modifier = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS;
+			else
+				fb->modifier = I915_FORMAT_MOD_Y_TILED_CCS;
 		else if (val & PLANE_CTL_MEDIA_DECOMPRESSION_ENABLE)
 			fb->modifier = I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS;
 		else
@@ -2425,7 +2438,12 @@ skl_get_initial_plane_config(struct intel_crtc *crtc,
 		break;
 	case PLANE_CTL_TILED_YF: /* aka PLANE_CTL_TILED_4 on XE_LPD+ */
 		if (HAS_4TILE(dev_priv)) {
-			fb->modifier = I915_FORMAT_MOD_4_TILED;
+			if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
+				fb->modifier = I915_FORMAT_MOD_4_TILED_DG2_RC_CCS;
+			else if (val & PLANE_CTL_MEDIA_DECOMPRESSION_ENABLE)
+				fb->modifier = I915_FORMAT_MOD_4_TILED_DG2_MC_CCS;
+			else
+				fb->modifier = I915_FORMAT_MOD_4_TILED;
 		} else {
 			if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
 				fb->modifier = I915_FORMAT_MOD_Yf_TILED_CCS;
-- 
2.30.2