drm/i915: Do intel_dpll_readout_hw_state() after encoder readout

The clock readout for DDI encoders needs to moved into the encoders.
To that end intel_dpll_readout_hw_state() needs to happen after
the encoder readout as otherwise it can't correctly populate
the PLL crtc_mask/active_mask bitmasks.

v2: Populate DPLL ref clocks before the encoder->get_config()
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210225161225.30746-1-ville.syrjala@linux.intel.comReviewed-by: Mika Kahola <mika.kahola@intel.com>

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

@@ -12909,6 +12909,7 @@ int intel_modeset_init_nogem(struct drm_i915_private *i915)
 
 	intel_update_czclk(i915);
 	intel_modeset_init_hw(i915);
+	intel_dpll_update_ref_clks(i915);
 
 	intel_hdcp_component_init(i915);
 
@@ -13445,8 +13446,6 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev)
 
 	readout_plane_state(dev_priv);
 
-	intel_dpll_readout_hw_state(dev_priv);
-
 	for_each_intel_encoder(dev, encoder) {
 		pipe = 0;
 
@@ -13481,6 +13480,8 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev)
 			    pipe_name(pipe));
 	}
 
+	intel_dpll_readout_hw_state(dev_priv);
+
 	drm_connector_list_iter_begin(dev, &conn_iter);
 	for_each_intel_connector_iter(connector, &conn_iter) {
 		if (connector->get_hw_state(connector)) {

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

@@ -4612,12 +4612,15 @@ static void readout_dpll_hw_state(struct drm_i915_private *i915,
 		    pll->info->name, pll->state.crtc_mask, pll->on);
 }
 
-void intel_dpll_readout_hw_state(struct drm_i915_private *i915)
+void intel_dpll_update_ref_clks(struct drm_i915_private *i915)
 {
-	int i;
-
 	if (i915->dpll.mgr && i915->dpll.mgr->update_ref_clks)
 		i915->dpll.mgr->update_ref_clks(i915);
+}
+
+void intel_dpll_readout_hw_state(struct drm_i915_private *i915)
+{
+	int i;
 
 	for (i = 0; i < i915->dpll.num_shared_dpll; i++)
 		readout_dpll_hw_state(i915, &i915->dpll.shared_dplls[i]);

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

@@ -410,6 +410,7 @@ void intel_enable_shared_dpll(const struct intel_crtc_state *crtc_state);
 void intel_disable_shared_dpll(const struct intel_crtc_state *crtc_state);
 void intel_shared_dpll_swap_state(struct intel_atomic_state *state);
 void intel_shared_dpll_init(struct drm_device *dev);
+void intel_dpll_update_ref_clks(struct drm_i915_private *dev_priv);
 void intel_dpll_readout_hw_state(struct drm_i915_private *dev_priv);
 void intel_dpll_sanitize_state(struct drm_i915_private *dev_priv);