1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/skl_prefill.h b/drivers/gpu/drm/i915/display/skl_prefill.h
new file mode 100644
index 000000000000..028ee19b64ce
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/skl_prefill.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#ifndef __SKL_PREFILL_H__
+#define __SKL_PREFILL_H__
+
+#include <linux/types.h>
+
+struct intel_crtc_state;
+
+struct skl_prefill_ctx {
+	/* .16 scanlines */
+	struct {
+		unsigned int fixed;
+		unsigned int wm0;
+		unsigned int scaler_1st;
+		unsigned int scaler_2nd;
+		unsigned int dsc;
+		unsigned int full;
+	} prefill;
+
+	/* .16 adjustment factors */
+	struct {
+		unsigned int cdclk;
+		unsigned int scaler_1st;
+		unsigned int scaler_2nd;
+	} adj;
+};
+
+void skl_prefill_init_worst(struct skl_prefill_ctx *ctx,
+			    const struct intel_crtc_state *crtc_state);
+void skl_prefill_init(struct skl_prefill_ctx *ctx,
+		      const struct intel_crtc_state *crtc_state);
+
+bool skl_prefill_vblank_too_short(const struct skl_prefill_ctx *ctx,
+				  const struct intel_crtc_state *crtc_state,
+				  unsigned int latency_us);
+int skl_prefill_min_guardband(const struct skl_prefill_ctx *ctx,
+			      const struct intel_crtc_state *crtc_state,
+			      unsigned int latency_us);
+int skl_prefill_min_cdclk(const struct skl_prefill_ctx *ctx,
+			  const struct intel_crtc_state *crtc_state);
+
+#endif /* __SKL_PREFILL_H__ */