drm/i915: Add a table with a descriptor for all i915 modifiers

Add a table describing all the framebuffer modifiers used by i915 at one
place. This has the benefit of deduplicating the listing of supported
modifiers for each platform and checking the support of these modifiers
on a given plane. This also simplifies in a similar way getting some
attribute for a modifier, for instance checking if the modifier is a
CCS modifier type.

While at it drop the cursor plane filtering from skl_plane_has_rc_ccs(),
as the cursor plane is registered with DRM core elsewhere.

v1: Unchanged.
v2:
- Keep the plane caps calculation in the plane code and pass an enum
  with these caps to intel_fb_get_modifiers(). (Ville)
- Get the modifiers calling intel_fb_get_modifiers() in i9xx_plane.c as
  well.
v3:
- s/.id/.modifier/ (Ville)
- Keep modifier_desc vs. plane_cap filter conditions consistent. (Ville)
- Drop redundant cursor plane check from skl_plane_has_rc_ccs(). (Ville)
- Use from, until display version fields in modifier_desc instead of a mask. (Jani)
- Unexport struct intel_modifier_desc, separate its decl and init. (Jani)
- Remove enum pipe, plane_id forward decls from intel_fb.h, which are
  not needed after v2.
v4:
- Reuse IS_DISPLAY_VER() instead of open-coding it. (Jani)
- Preserve the current modifier order exposed to user space. (Ville)
v5: Use }, { on one line to seperate the descriptor array elements. (Jani)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> (v3)
Link: https://patchwork.freedesktop.org/patch/msgid/20211020195138.1841242-2-imre.deak@intel.com

1 files changed, 50 insertions, 128 deletions

diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 7444b88829ea..7ee2114e420b 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -163,50 +163,6 @@ static const u32 icl_hdr_plane_formats[] = {
 	DRM_FORMAT_XVYU16161616,
 };
 
-static const u64 skl_plane_format_modifiers_noccs[] = {
-	I915_FORMAT_MOD_Yf_TILED,
-	I915_FORMAT_MOD_Y_TILED,
-	I915_FORMAT_MOD_X_TILED,
-	DRM_FORMAT_MOD_LINEAR,
-	DRM_FORMAT_MOD_INVALID
-};
-
-static const u64 skl_plane_format_modifiers_ccs[] = {
-	I915_FORMAT_MOD_Yf_TILED_CCS,
-	I915_FORMAT_MOD_Y_TILED_CCS,
-	I915_FORMAT_MOD_Yf_TILED,
-	I915_FORMAT_MOD_Y_TILED,
-	I915_FORMAT_MOD_X_TILED,
-	DRM_FORMAT_MOD_LINEAR,
-	DRM_FORMAT_MOD_INVALID
-};
-
-static const u64 gen12_plane_format_modifiers_mc_ccs[] = {
-	I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS,
-	I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS,
-	I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC,
-	I915_FORMAT_MOD_Y_TILED,
-	I915_FORMAT_MOD_X_TILED,
-	DRM_FORMAT_MOD_LINEAR,
-	DRM_FORMAT_MOD_INVALID
-};
-
-static const u64 gen12_plane_format_modifiers_rc_ccs[] = {
-	I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS,
-	I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC,
-	I915_FORMAT_MOD_Y_TILED,
-	I915_FORMAT_MOD_X_TILED,
-	DRM_FORMAT_MOD_LINEAR,
-	DRM_FORMAT_MOD_INVALID
-};
-
-static const u64 adlp_step_a_plane_format_modifiers[] = {
-	I915_FORMAT_MOD_Y_TILED,
-	I915_FORMAT_MOD_X_TILED,
-	DRM_FORMAT_MOD_LINEAR,
-	DRM_FORMAT_MOD_INVALID
-};
-
 int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
 {
 	switch (format) {
@@ -1882,42 +1838,13 @@ static const u32 *icl_get_plane_formats(struct drm_i915_private *dev_priv,
 	}
 }
 
-static bool skl_plane_has_ccs(struct drm_i915_private *dev_priv,
-			      enum pipe pipe, enum plane_id plane_id)
-{
-	if (plane_id == PLANE_CURSOR)
-		return false;
-
-	if (DISPLAY_VER(dev_priv) >= 11)
-		return true;
-
-	if (IS_GEMINILAKE(dev_priv))
-		return pipe != PIPE_C;
-
-	return pipe != PIPE_C &&
-		(plane_id == PLANE_PRIMARY ||
-		 plane_id == PLANE_SPRITE0);
-}
-
 static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 					   u32 format, u64 modifier)
 {
 	struct intel_plane *plane = to_intel_plane(_plane);
 
-	switch (modifier) {
-	case DRM_FORMAT_MOD_LINEAR:
-	case I915_FORMAT_MOD_X_TILED:
-	case I915_FORMAT_MOD_Y_TILED:
-	case I915_FORMAT_MOD_Yf_TILED:
-		break;
-	case I915_FORMAT_MOD_Y_TILED_CCS:
-	case I915_FORMAT_MOD_Yf_TILED_CCS:
-		if (!plane->has_ccs)
-			return false;
-		break;
-	default:
+	if (!intel_fb_plane_supports_modifier(plane, modifier))
 		return false;
-	}
 
 	switch (format) {
 	case DRM_FORMAT_XRGB8888:
@@ -1965,45 +1892,13 @@ static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 	}
 }
 
-static bool gen12_plane_supports_mc_ccs(struct drm_i915_private *dev_priv,
-					enum plane_id plane_id)
-{
-	/* Wa_14010477008:tgl[a0..c0],rkl[all],dg1[all] */
-	if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv) ||
-	    IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_D0))
-		return false;
-
-	/* Wa_22011186057 */
-	if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
-		return false;
-
-	return plane_id < PLANE_SPRITE4;
-}
-
 static bool gen12_plane_format_mod_supported(struct drm_plane *_plane,
 					     u32 format, u64 modifier)
 {
-	struct drm_i915_private *dev_priv = to_i915(_plane->dev);
 	struct intel_plane *plane = to_intel_plane(_plane);
 
-	switch (modifier) {
-	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
-		if (!gen12_plane_supports_mc_ccs(dev_priv, plane->id))
-			return false;
-		fallthrough;
-	case DRM_FORMAT_MOD_LINEAR:
-	case I915_FORMAT_MOD_X_TILED:
-	case I915_FORMAT_MOD_Y_TILED:
-		break;
-	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
-	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
-		/* Wa_22011186057 */
-		if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
-			return false;
-		break;
-	default:
+	if (!intel_fb_plane_supports_modifier(plane, modifier))
 		return false;
-	}
 
 	switch (format) {
 	case DRM_FORMAT_XRGB8888:
@@ -2051,18 +1946,6 @@ static bool gen12_plane_format_mod_supported(struct drm_plane *_plane,
 	}
 }
 
-static const u64 *gen12_get_plane_modifiers(struct drm_i915_private *dev_priv,
-					    enum plane_id plane_id)
-{
-	/* Wa_22011186057 */
-	if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
-		return adlp_step_a_plane_format_modifiers;
-	else if (gen12_plane_supports_mc_ccs(dev_priv, plane_id))
-		return gen12_plane_format_modifiers_mc_ccs;
-	else
-		return gen12_plane_format_modifiers_rc_ccs;
-}
-
 static const struct drm_plane_funcs skl_plane_funcs = {
 	.update_plane = drm_atomic_helper_update_plane,
 	.disable_plane = drm_atomic_helper_disable_plane,
@@ -2103,6 +1986,39 @@ skl_plane_disable_flip_done(struct intel_plane *plane)
 	spin_unlock_irq(&i915->irq_lock);
 }
 
+static bool skl_plane_has_rc_ccs(struct drm_i915_private *i915,
+				 enum pipe pipe, enum plane_id plane_id)
+{
+	/* Wa_22011186057 */
+	if (IS_ADLP_DISPLAY_STEP(i915, STEP_A0, STEP_B0))
+		return false;
+
+	if (DISPLAY_VER(i915) >= 11)
+		return true;
+
+	if (IS_GEMINILAKE(i915))
+		return pipe != PIPE_C;
+
+	return pipe != PIPE_C &&
+		(plane_id == PLANE_PRIMARY ||
+		 plane_id == PLANE_SPRITE0);
+}
+
+static bool gen12_plane_has_mc_ccs(struct drm_i915_private *i915,
+				   enum plane_id plane_id)
+{
+	/* Wa_14010477008:tgl[a0..c0],rkl[all],dg1[all] */
+	if (IS_DG1(i915) || IS_ROCKETLAKE(i915) ||
+	    IS_TGL_DISPLAY_STEP(i915, STEP_A0, STEP_D0))
+		return false;
+
+	/* Wa_22011186057 */
+	if (IS_ADLP_DISPLAY_STEP(i915, STEP_A0, STEP_B0))
+		return false;
+
+	return plane_id < PLANE_SPRITE4;
+}
+
 struct intel_plane *
 skl_universal_plane_create(struct drm_i915_private *dev_priv,
 			   enum pipe pipe, enum plane_id plane_id)
@@ -2110,6 +2026,7 @@ skl_universal_plane_create(struct drm_i915_private *dev_priv,
 	const struct drm_plane_funcs *plane_funcs;
 	struct intel_plane *plane;
 	enum drm_plane_type plane_type;
+	enum intel_plane_caps plane_caps;
 	unsigned int supported_rotations;
 	unsigned int supported_csc;
 	const u64 *modifiers;
@@ -2171,29 +2088,34 @@ skl_universal_plane_create(struct drm_i915_private *dev_priv,
 		formats = skl_get_plane_formats(dev_priv, pipe,
 						plane_id, &num_formats);
 
-	plane->has_ccs = skl_plane_has_ccs(dev_priv, pipe, plane_id);
-	if (DISPLAY_VER(dev_priv) >= 12) {
-		modifiers = gen12_get_plane_modifiers(dev_priv, plane_id);
+	if (DISPLAY_VER(dev_priv) >= 12)
 		plane_funcs = &gen12_plane_funcs;
-	} else {
-		if (plane->has_ccs)
-			modifiers = skl_plane_format_modifiers_ccs;
-		else
-			modifiers = skl_plane_format_modifiers_noccs;
+	else
 		plane_funcs = &skl_plane_funcs;
-	}
 
 	if (plane_id == PLANE_PRIMARY)
 		plane_type = DRM_PLANE_TYPE_PRIMARY;
 	else
 		plane_type = DRM_PLANE_TYPE_OVERLAY;
 
+	plane_caps = PLANE_HAS_TILING;
+	if (skl_plane_has_rc_ccs(dev_priv, pipe, plane_id))
+		plane_caps |= PLANE_HAS_CCS_RC;
+
+	if (gen12_plane_has_mc_ccs(dev_priv, plane_id))
+		plane_caps |= PLANE_HAS_CCS_MC;
+
+	modifiers = intel_fb_plane_get_modifiers(dev_priv, plane_caps);
+
 	ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
 				       0, plane_funcs,
 				       formats, num_formats, modifiers,
 				       plane_type,
 				       "plane %d%c", plane_id + 1,
 				       pipe_name(pipe));
+
+	kfree(modifiers);
+
 	if (ret)
 		goto fail;