drm/i915/fdi: move intel_fdi_link_freq() to intel_fdi.[ch]

There's no performance reason to have it as static inline; move it out
of intel_display_types.h to reduce clutter and dependency on i915_drv.h.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/8c9bb23d92878deb1ecc75427ec6648bd3505816.1629281426.git.jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_display_types.h

@@ -2040,15 +2040,6 @@ static inline u32 i9xx_dpll_compute_fp(struct dpll *dpll)
 	return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
 }
 
-static inline u32 intel_fdi_link_freq(struct drm_i915_private *dev_priv,
-				      const struct intel_crtc_state *pipe_config)
-{
-	if (HAS_DDI(dev_priv))
-		return pipe_config->port_clock; /* SPLL */
-	else
-		return dev_priv->fdi_pll_freq;
-}
-
 static inline bool is_ccs_modifier(u64 modifier)
 {
 	return modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||

drivers/gpu/drm/i915/display/intel_fdi.c

@@ -95,6 +95,15 @@ static int ilk_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
 	}
 }
 
+u32 intel_fdi_link_freq(struct drm_i915_private *i915,
+			const struct intel_crtc_state *pipe_config)
+{
+	if (HAS_DDI(i915))
+		return pipe_config->port_clock; /* SPLL */
+	else
+		return i915->fdi_pll_freq;
+}
+
 int ilk_fdi_compute_config(struct intel_crtc *crtc,
 			   struct intel_crtc_state *pipe_config)
 {

drivers/gpu/drm/i915/display/intel_fdi.h

@@ -6,12 +6,16 @@
 #ifndef _INTEL_FDI_H_
 #define _INTEL_FDI_H_
 
+#include <linux/types.h>
+
 struct drm_i915_private;
 struct intel_crtc;
 struct intel_crtc_state;
 struct intel_encoder;
 
 #define I915_DISPLAY_CONFIG_RETRY 1
+u32 intel_fdi_link_freq(struct drm_i915_private *i915,
+			const struct intel_crtc_state *pipe_config);
 int ilk_fdi_compute_config(struct intel_crtc *intel_crtc,
 			   struct intel_crtc_state *pipe_config);
 void intel_fdi_normal_train(struct intel_crtc *crtc);