[PATCH 3/3] drm/i915/mtl: Add handling for MTL ccs modifiers

[Juha-Pekka Heikkila]

Add Tile4 ccs modifiers w/ auxbuffer handling

Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
---
 drivers/gpu/drm/i915/display/intel_fb.c       | 42 ++++++++++++++++++-
 .../drm/i915/display/skl_universal_plane.c    | 22 +++++++++-
 2 files changed, 61 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
index b240cfdb7a2c..fcb9d83a0215 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.c
+++ b/drivers/gpu/drm/i915/display/intel_fb.c
@@ -157,6 +157,32 @@ struct intel_modifier_desc {
 
 static const struct intel_modifier_desc intel_modifiers[] = {
 	{
+		.modifier = I915_FORMAT_MOD_4_TILED_MTL_MC_CCS,
+		.display_ver = { 14, 14 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_4 | INTEL_PLANE_CAP_CCS_MC,
+
+		.ccs.packed_aux_planes = BIT(1),
+		.ccs.planar_aux_planes = BIT(2) | BIT(3),
+
+		FORMAT_OVERRIDE(gen12_ccs_formats),
+	}, {
+		.modifier = I915_FORMAT_MOD_4_TILED_MTL_RC_CCS,
+		.display_ver = { 14, 14 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_4 | INTEL_PLANE_CAP_CCS_RC,
+
+		.ccs.packed_aux_planes = BIT(1),
+
+		FORMAT_OVERRIDE(gen12_ccs_formats),
+	}, {
+		.modifier = I915_FORMAT_MOD_4_TILED_MTL_RC_CCS_CC,
+		.display_ver = { 14, 14 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_4 | INTEL_PLANE_CAP_CCS_RC_CC,
+
+		.ccs.cc_planes = BIT(2),
+		.ccs.packed_aux_planes = BIT(1),
+
+		FORMAT_OVERRIDE(gen12_ccs_cc_formats),
+	}, {
 		.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,
@@ -370,6 +396,14 @@ static bool plane_has_modifier(struct drm_i915_private *i915,
 	if (!plane_caps_contain_all(plane_caps, md->plane_caps))
 		return false;
 
+	/*
+	 * Separate AuxCCS and Flat CCS modifiers to be run only on platforms
+	 * where supported.
+	 */
+	if (intel_fb_is_ccs_modifier(md->modifier) &&
+	   HAS_FLAT_CCS(i915) != !md->ccs.packed_aux_planes)
+		return false;
+
 	return true;
 }
 
@@ -489,7 +523,7 @@ static bool intel_fb_is_gen12_ccs_aux_plane(const struct drm_framebuffer *fb, in
 {
 	const struct intel_modifier_desc *md = lookup_modifier(fb->modifier);
 
-	return check_modifier_display_ver_range(md, 12, 13) &&
+	return check_modifier_display_ver_range(md, 12, 14) &&
 	       ccs_aux_plane_mask(md, fb->format) & BIT(color_plane);
 }
 
@@ -605,6 +639,9 @@ intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane)
 		if (intel_fb_is_ccs_aux_plane(fb, color_plane))
 			return 128;
 		fallthrough;
+	case I915_FORMAT_MOD_4_TILED_MTL_RC_CCS:
+	case I915_FORMAT_MOD_4_TILED_MTL_RC_CCS_CC:
+	case I915_FORMAT_MOD_4_TILED_MTL_MC_CCS:
 	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
 	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
 	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
@@ -791,6 +828,9 @@ unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
 	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
 	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
 	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
+	case I915_FORMAT_MOD_4_TILED_MTL_MC_CCS:
+	case I915_FORMAT_MOD_4_TILED_MTL_RC_CCS:
+	case I915_FORMAT_MOD_4_TILED_MTL_RC_CCS_CC:
 		return 16 * 1024;
 	case I915_FORMAT_MOD_Y_TILED_CCS:
 	case I915_FORMAT_MOD_Yf_TILED_CCS:
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 8ea0598a5a07..f6f760e59c9e 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -789,6 +789,14 @@ static u32 skl_plane_ctl_tiling(u64 fb_modifier)
 			PLANE_CTL_CLEAR_COLOR_DISABLE;
 	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC:
 		return PLANE_CTL_TILED_4 | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
+	case I915_FORMAT_MOD_4_TILED_MTL_RC_CCS:
+		return PLANE_CTL_TILED_4 |
+			PLANE_CTL_RENDER_DECOMPRESSION_ENABLE |
+			PLANE_CTL_CLEAR_COLOR_DISABLE;
+	case I915_FORMAT_MOD_4_TILED_MTL_RC_CCS_CC:
+		return PLANE_CTL_TILED_4 | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
+	case I915_FORMAT_MOD_4_TILED_MTL_MC_CCS:
+		return PLANE_CTL_TILED_4 | PLANE_CTL_MEDIA_DECOMPRESSION_ENABLE;
 	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;
@@ -2160,6 +2168,11 @@ skl_plane_disable_flip_done(struct intel_plane *plane)
 static bool skl_plane_has_rc_ccs(struct drm_i915_private *i915,
 				 enum pipe pipe, enum plane_id plane_id)
 {
+	/* Wa_14017240301 */
+	if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
+	    IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0))
+		return false;
+
 	/* Wa_22011186057 */
 	if (IS_ADLP_DISPLAY_STEP(i915, STEP_A0, STEP_B0))
 		return false;
@@ -2441,12 +2454,17 @@ 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)
-			if (DISPLAY_VER(dev_priv) >= 12)
+			if (DISPLAY_VER(dev_priv) >= 14)
+				fb->modifier = I915_FORMAT_MOD_4_TILED_MTL_RC_CCS;
+			else 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;
+			if (DISPLAY_VER(dev_priv) >= 14)
+				fb->modifier = I915_FORMAT_MOD_4_TILED_MTL_MC_CCS;
+			else
+				fb->modifier = I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS;
 		else
 			fb->modifier = I915_FORMAT_MOD_Y_TILED;
 		break;
-- 
2.25.1