[Intel-gfx] [v2] drm/i915/tgl: Add Wa_1606054188:tgl

[Matt Atwood]

On Tiger Lake we do not support source keying in the pixel formats P010,
P012, P016.

v2: Move WA to end of function. Create helper function for format
check. Less verbose debugging messaging.

Bspec: 52890
Cc: Matt Roper <matthew.d.roper at intel.com>
Cc: Manasi Navare <manasi.d.navare at intel.com>
CC: Ville Syrjälä <ville.syrjala at intel.com>
Signed-off-by: Matt Atwood <matthew.s.atwood at intel.com>
---
 drivers/gpu/drm/i915/display/intel_sprite.c | 22 +++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index 2f277d1fc6f1..6e4d73588b48 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -2070,6 +2070,18 @@ vlv_sprite_check(struct intel_crtc_state *crtc_state,
 	return 0;
 }
 
+static bool intel_format_is_p01x(int format)
+{
+	switch(format){
+		case DRM_FORMAT_P010:
+		case DRM_FORMAT_P012:
+		case DRM_FORMAT_P016:
+			return true;
+		default:
+			return false;
+	}
+}
+
 static int skl_plane_check_fb(const struct intel_crtc_state *crtc_state,
 			      const struct intel_plane_state *plane_state)
 {
@@ -2143,6 +2155,16 @@ static int skl_plane_check_fb(const struct intel_crtc_state *crtc_state,
 		return -EINVAL;
 	}
 
+	/* Wa_1606054188:tgl
+	 *
+	 * TODO: Add format RGB64i when implemented.
+	 *
+	 */
+	if(IS_GEN(dev_priv, 12) &&
+	   plane_state->ckey.flags & I915_SET_COLORKEY_SOURCE &&
+	   intel_format_is_p01x(fb->format->format))
+		DRM_DEBUG_KMS("Source color keying not supported with P01x formats\n");
+
 	return 0;
 }
 
-- 
2.21.1