drm/i915/dg2: Add support for DG2 clear color compression

Add support for the DG2 specific render compression with clear color
framebuffer format.

DG2 onwards discrete gfx has support for new flat CCS mapping,
which brings in display feature in to avoid Aux walk for compressed
surface. This support build on top of Flat CCS support added in XEHPSDV.
FLAT CCS surface base address should be 64k aligned,
Compressed displayable surfaces must use tile4 format.

HAS: 1407880786
B.Spec : 7655
B.Spec : 53902

v2: Merge all bits required for the support of functionality into this
    patch from the patch adding the corresponding modifier.

Cc: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Juha-Pekka Heikkilä <juha-pekka.heikkila@intel.com>
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Acked-by: Anshuman Gupta <anshuman.gupta@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220411143405.1073845-5-imre.deak@intel.com

1 files changed, 31 insertions, 9 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
index 4d4d01963f15..e94923e9dbb1 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.c
+++ b/drivers/gpu/drm/i915/display/intel_fb.c
@@ -107,6 +107,21 @@ static const struct drm_format_info gen12_ccs_cc_formats[] = {
 	  .hsub = 1, .vsub = 1, .has_alpha = true },
 };
 
+static const struct drm_format_info gen12_flat_ccs_cc_formats[] = {
+	{ .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2,
+	  .char_per_block = { 4, 0 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, },
+	{ .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2,
+	  .char_per_block = { 4, 0 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, },
+	{ .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2,
+	  .char_per_block = { 4, 0 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, .has_alpha = true },
+	{ .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2,
+	  .char_per_block = { 4, 0 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, .has_alpha = true },
+};
+
 struct intel_modifier_desc {
 	u64 modifier;
 	struct {
@@ -145,6 +160,14 @@ static const struct intel_modifier_desc intel_modifiers[] = {
 		.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_CC,
+		.display_ver = { 13, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_4 | INTEL_PLANE_CAP_CCS_RC_CC,
+
+		.ccs.cc_planes = BIT(1),
+
+		FORMAT_OVERRIDE(gen12_flat_ccs_cc_formats),
+	}, {
 		.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,
@@ -393,17 +416,13 @@ bool intel_fb_plane_supports_modifier(struct intel_plane *plane, u64 modifier)
 static bool format_is_yuv_semiplanar(const struct intel_modifier_desc *md,
 				     const struct drm_format_info *info)
 {
-	int yuv_planes;
-
 	if (!info->is_yuv)
 		return false;
 
-	if (plane_caps_contain_any(md->plane_caps, INTEL_PLANE_CAP_CCS_MASK))
-		yuv_planes = 4;
+	if (hweight8(md->ccs.planar_aux_planes) == 2)
+		return info->num_planes == 4;
 	else
-		yuv_planes = 2;
-
-	return info->num_planes == yuv_planes;
+		return info->num_planes == 2;
 }
 
 /**
@@ -528,12 +547,13 @@ static unsigned int gen12_ccs_aux_stride(struct intel_framebuffer *fb, int ccs_p
 
 int skl_main_to_aux_plane(const struct drm_framebuffer *fb, int main_plane)
 {
+	const struct intel_modifier_desc *md = lookup_modifier(fb->modifier);
 	struct drm_i915_private *i915 = to_i915(fb->dev);
 
-	if (intel_fb_is_ccs_modifier(fb->modifier))
+	if (md->ccs.packed_aux_planes | md->ccs.planar_aux_planes)
 		return main_to_ccs_plane(fb, main_plane);
 	else if (DISPLAY_VER(i915) < 11 &&
-		 intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier))
+		 format_is_yuv_semiplanar(md, fb->format))
 		return 1;
 	else
 		return 0;
@@ -559,6 +579,7 @@ intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane)
 		else
 			return 512;
 	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS:
+	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC:
 	case I915_FORMAT_MOD_4_TILED_DG2_MC_CCS:
 	case I915_FORMAT_MOD_4_TILED:
 		/*
@@ -763,6 +784,7 @@ unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
 	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_RC_CCS_CC:
 	case I915_FORMAT_MOD_4_TILED_DG2_MC_CCS:
 		return 16 * 1024;
 	default: