drm/i915: Nuke intel_dp_get_m_n()

As with intel_dp_set_m_n() let's get rid of the wrapper and just
call the relevant PCH vs. CPU transcoder functions directly.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220128103757.22461-3-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/display/g4x_dp.c

@@ -333,6 +333,18 @@ static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
 	return ret;
 }
 
+static void g4x_dp_get_m_n(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (crtc_state->has_pch_encoder)
+		intel_pch_transcoder_get_m_n(crtc, &crtc_state->dp_m_n);
+	else
+		intel_cpu_transcoder_get_m_n(crtc, crtc_state->cpu_transcoder,
+					     &crtc_state->dp_m_n,
+					     &crtc_state->dp_m2_n2);
+}
+
 static void intel_dp_get_config(struct intel_encoder *encoder,
 				struct intel_crtc_state *pipe_config)
 {
@@ -384,7 +396,7 @@ static void intel_dp_get_config(struct intel_encoder *encoder,
 	pipe_config->lane_count =
 		((tmp & DP_PORT_WIDTH_MASK) >> DP_PORT_WIDTH_SHIFT) + 1;
 
-	intel_dp_get_m_n(crtc, pipe_config);
+	g4x_dp_get_m_n(pipe_config);
 
 	if (port == PORT_A) {
 		if ((intel_de_read(dev_priv, DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_162MHZ)

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

@@ -3360,7 +3360,10 @@ static void intel_ddi_read_func_ctl(struct intel_encoder *encoder,
 			pipe_config->output_types |= BIT(INTEL_OUTPUT_DP);
 		pipe_config->lane_count =
 			((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
-		intel_dp_get_m_n(crtc, pipe_config);
+
+		intel_cpu_transcoder_get_m_n(crtc, cpu_transcoder,
+					     &pipe_config->dp_m_n,
+					     &pipe_config->dp_m2_n2);
 
 		if (DISPLAY_VER(dev_priv) >= 11) {
 			i915_reg_t dp_tp_ctl = dp_tp_ctl_reg(encoder, pipe_config);
@@ -3397,7 +3400,9 @@ static void intel_ddi_read_func_ctl(struct intel_encoder *encoder,
 			pipe_config->mst_master_transcoder =
 					REG_FIELD_GET(TRANS_DDI_MST_TRANSPORT_SELECT_MASK, temp);
 
-		intel_dp_get_m_n(crtc, pipe_config);
+		intel_cpu_transcoder_get_m_n(crtc, cpu_transcoder,
+					     &pipe_config->dp_m_n,
+					     &pipe_config->dp_m2_n2);
 
 		pipe_config->infoframes.enable |=
 			intel_hdmi_infoframes_enabled(encoder, pipe_config);

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

@@ -3856,8 +3856,8 @@ static void intel_get_m_n(struct drm_i915_private *i915,
 	m_n->tu = REG_FIELD_GET(TU_SIZE_MASK, intel_de_read(i915, data_m_reg)) + 1;
 }
 
-static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
-					 struct intel_link_m_n *m_n)
+void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
+				  struct intel_link_m_n *m_n)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -3868,10 +3868,10 @@ static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
 		      PCH_TRANS_LINK_M1(pipe), PCH_TRANS_LINK_N1(pipe));
 }
 
-static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
-					 enum transcoder transcoder,
-					 struct intel_link_m_n *m_n,
-					 struct intel_link_m_n *m2_n2)
+void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
+				  enum transcoder transcoder,
+				  struct intel_link_m_n *m_n,
+				  struct intel_link_m_n *m2_n2)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
 	enum pipe pipe = crtc->pipe;
@@ -3893,17 +3893,6 @@ static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
 	}
 }
 
-void intel_dp_get_m_n(struct intel_crtc *crtc,
-		      struct intel_crtc_state *pipe_config)
-{
-	if (pipe_config->has_pch_encoder)
-		intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
-	else
-		intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
-					     &pipe_config->dp_m_n,
-					     &pipe_config->dp_m2_n2);
-}
-
 void ilk_get_fdi_m_n_config(struct intel_crtc *crtc,
 			    struct intel_crtc_state *pipe_config)
 {

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

@@ -604,11 +604,15 @@ bool intel_fuzzy_clock_check(int clock1, int clock2);
 
 void intel_display_prepare_reset(struct drm_i915_private *dev_priv);
 void intel_display_finish_reset(struct drm_i915_private *dev_priv);
-void intel_dp_get_m_n(struct intel_crtc *crtc,
-		      struct intel_crtc_state *pipe_config);
 void intel_cpu_transcoder_set_m_n(const struct intel_crtc_state *crtc_state,
 				  const struct intel_link_m_n *m_n,
 				  const struct intel_link_m_n *m2_n2);
+void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
+				  enum transcoder cpu_transcoder,
+				  struct intel_link_m_n *m_n,
+				  struct intel_link_m_n *m2_n2);
+void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
+				  struct intel_link_m_n *m_n);
 void ilk_get_fdi_m_n_config(struct intel_crtc *crtc,
 			    struct intel_crtc_state *pipe_config);
 void i9xx_crtc_clock_get(struct intel_crtc *crtc,