drm/i915: Don't pass crtc_state to intel_dp_set_link_params()

Decouple intel_dp_set_link_params() from struct intel_crtc_state. This
will be useful for implementing DP upfront link training.

v2:
* Rebased on atomic state changes (Manasi)
Reviewed-by: NDurgadoss R <durgadoss.r@intel.com>
Signed-off-by: NAnder Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: NManasi Navare <manasi.d.navare@intel.com>
Signed-off-by: NRodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/i915/intel_ddi.c

@@ -1639,7 +1639,10 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder,
 
 		intel_prepare_dp_ddi_buffers(intel_encoder);
 
-		intel_dp_set_link_params(intel_dp, crtc->config);
+		intel_dp_set_link_params(intel_dp, crtc->config->port_clock,
+					 crtc->config->lane_count,
+					 intel_crtc_has_type(crtc->config,
+							     INTEL_OUTPUT_DP_MST));
 
 		intel_ddi_init_dp_buf_reg(intel_encoder);
 

drivers/gpu/drm/i915/intel_dp.c

@@ -1641,11 +1641,12 @@ intel_dp_compute_config(struct intel_encoder *encoder,
 }
 
 void intel_dp_set_link_params(struct intel_dp *intel_dp,
-			      const struct intel_crtc_state *pipe_config)
+			      int link_rate, uint8_t lane_count,
+			      bool link_mst)
 {
-	intel_dp->link_rate = pipe_config->port_clock;
-	intel_dp->lane_count = pipe_config->lane_count;
-	intel_dp->link_mst = intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DP_MST);
+	intel_dp->link_rate = link_rate;
+	intel_dp->lane_count = lane_count;
+	intel_dp->link_mst = link_mst;
 }
 
 static void intel_dp_prepare(struct intel_encoder *encoder,
@@ -1658,7 +1659,10 @@ static void intel_dp_prepare(struct intel_encoder *encoder,
 	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 	const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
 
-	intel_dp_set_link_params(intel_dp, pipe_config);
+	intel_dp_set_link_params(intel_dp, pipe_config->port_clock,
+				 pipe_config->lane_count,
+				 intel_crtc_has_type(pipe_config,
+						     INTEL_OUTPUT_DP_MST));
 
 	/*
 	 * There are four kinds of DP registers:

drivers/gpu/drm/i915/intel_dp_mst.c

@@ -153,8 +153,10 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
 		intel_ddi_clk_select(&intel_dig_port->base, pipe_config);
 
 		intel_prepare_dp_ddi_buffers(&intel_dig_port->base);
-
-		intel_dp_set_link_params(intel_dp, pipe_config);
+		intel_dp_set_link_params(intel_dp,
+					 pipe_config->port_clock,
+					 pipe_config->lane_count,
+					 true);
 
 		intel_ddi_init_dp_buf_reg(&intel_dig_port->base);
 

drivers/gpu/drm/i915/intel_drv.h

@@ -1383,7 +1383,8 @@ bool intel_dp_init(struct drm_device *dev, i915_reg_t output_reg, enum port port
 bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 			     struct intel_connector *intel_connector);
 void intel_dp_set_link_params(struct intel_dp *intel_dp,
-			      const struct intel_crtc_state *pipe_config);
+			      int link_rate, uint8_t lane_count,
+			      bool link_mst);
 void intel_dp_start_link_train(struct intel_dp *intel_dp);
 void intel_dp_stop_link_train(struct intel_dp *intel_dp);
 void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);