drm/i915: Relocate a few more pch transcoder bits

Move intel_crtc_pch_transcoder() and has_pch_trancoder() to a
more appropritate place (intel_pch_display.c).
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220221110356.5532-4-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

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

@@ -519,16 +519,6 @@ void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
 			 expected_mask);
 }
 
-enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-
-	if (HAS_PCH_LPT(dev_priv))
-		return PIPE_A;
-	else
-		return crtc->pipe;
-}
-
 void intel_enable_transcoder(const struct intel_crtc_state *new_crtc_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
@@ -9928,13 +9918,6 @@ static struct intel_connector *intel_encoder_find_connector(struct intel_encoder
 	return NULL;
 }
 
-static bool has_pch_trancoder(struct drm_i915_private *dev_priv,
-			      enum pipe pch_transcoder)
-{
-	return HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv) ||
-		(HAS_PCH_LPT_H(dev_priv) && pch_transcoder == PIPE_A);
-}
-
 static void intel_sanitize_crtc(struct intel_crtc *crtc,
 				struct drm_modeset_acquire_ctx *ctx)
 {
@@ -9989,7 +9972,7 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc,
 		 * PCH transcoders B and C would prevent enabling the south
 		 * error interrupt (see cpt_can_enable_serr_int()).
 		 */
-		if (has_pch_trancoder(dev_priv, crtc->pipe))
+		if (intel_has_pch_trancoder(dev_priv, crtc->pipe))
 			crtc->pch_fifo_underrun_disabled = true;
 	}
 }

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

@@ -565,7 +565,6 @@ void intel_enable_transcoder(const struct intel_crtc_state *new_crtc_state);
 void intel_disable_transcoder(const struct intel_crtc_state *old_crtc_state);
 void i830_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe);
 void i830_disable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe);
-enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc);
 int vlv_get_hpll_vco(struct drm_i915_private *dev_priv);
 int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
 		      const char *name, u32 reg, int ref_freq);

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

@@ -68,6 +68,7 @@
 #include "intel_lspcon.h"
 #include "intel_lvds.h"
 #include "intel_panel.h"
+#include "intel_pch_display.h"
 #include "intel_pps.h"
 #include "intel_psr.h"
 #include "intel_tc.h"

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

@@ -14,6 +14,23 @@
 #include "intel_pps.h"
 #include "intel_sdvo.h"
 
+bool intel_has_pch_trancoder(struct drm_i915_private *i915,
+			     enum pipe pch_transcoder)
+{
+	return HAS_PCH_IBX(i915) || HAS_PCH_CPT(i915) ||
+		(HAS_PCH_LPT_H(i915) && pch_transcoder == PIPE_A);
+}
+
+enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (HAS_PCH_LPT(i915))
+		return PIPE_A;
+	else
+		return crtc->pipe;
+}
+
 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
 				   enum pipe pipe, enum port port,
 				   i915_reg_t dp_reg)

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

@@ -6,12 +6,19 @@
 #ifndef _INTEL_PCH_DISPLAY_H_
 #define _INTEL_PCH_DISPLAY_H_
 
+#include <linux/types.h>
+
+enum pipe;
 struct drm_i915_private;
 struct intel_atomic_state;
 struct intel_crtc;
 struct intel_crtc_state;
 struct intel_link_m_n;
 
+bool intel_has_pch_trancoder(struct drm_i915_private *i915,
+			     enum pipe pch_transcoder);
+enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc);
+
 void ilk_pch_pre_enable(struct intel_atomic_state *state,
 			struct intel_crtc *crtc);
 void ilk_pch_enable(struct intel_atomic_state *state,