1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_lt_phy.h b/drivers/gpu/drm/i915/display/intel_lt_phy.h
new file mode 100644
index 000000000000..b7911acd7dcd
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_lt_phy.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2025 Intel Corporation
+ */
+
+#ifndef __INTEL_LT_PHY_H__
+#define __INTEL_LT_PHY_H__
+
+#include <linux/types.h>
+
+struct intel_atomic_state;
+struct intel_display;
+struct intel_encoder;
+struct intel_crtc_state;
+struct intel_crtc;
+struct intel_lt_phy_pll_state;
+
+void intel_lt_phy_pll_enable(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state);
+void intel_lt_phy_pll_disable(struct intel_encoder *encoder);
+int
+intel_lt_phy_pll_calc_state(struct intel_crtc_state *crtc_state,
+			    struct intel_encoder *encoder);
+int intel_lt_phy_calc_port_clock(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state);
+void intel_lt_phy_set_signal_levels(struct intel_encoder *encoder,
+				    const struct intel_crtc_state *crtc_state);
+void intel_lt_phy_dump_hw_state(struct intel_display *display,
+				const struct intel_lt_phy_pll_state *hw_state);
+bool
+intel_lt_phy_pll_compare_hw_state(const struct intel_lt_phy_pll_state *a,
+				  const struct intel_lt_phy_pll_state *b);
+void intel_lt_phy_pll_readout_hw_state(struct intel_encoder *encoder,
+				       const struct intel_crtc_state *crtc_state,
+				       struct intel_lt_phy_pll_state *pll_state);
+void intel_lt_phy_pll_state_verify(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc);
+int
+intel_lt_phy_calculate_hdmi_state(struct intel_lt_phy_pll_state *lt_state,
+				  u32 frequency_khz);
+void intel_xe3plpd_pll_enable(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state);
+void intel_xe3plpd_pll_disable(struct intel_encoder *encoder);
+
+#define HAS_LT_PHY(display) (DISPLAY_VER(display) >= 35)
+
+#endif /* __INTEL_LT_PHY_H__ */