drm/i915/display: add intel_display_driver_early_probe()

Add intel_display_driver_early_probe() as the early probe call to
replace intel_init_display_hooks(). The latter will be "demoted" to
setting up hooks in intel_display.c only.
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/0b02311e5343527b501b44671d2188f2a1b30a7d.1681465222.git.jani.nikula@intel.com

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

@@ -8019,15 +8019,6 @@ static const struct intel_display_funcs i9xx_display_funcs = {
  */
 void intel_init_display_hooks(struct drm_i915_private *dev_priv)
 {
-	if (!HAS_DISPLAY(dev_priv))
-		return;
-
-	intel_color_init_hooks(dev_priv);
-	intel_init_cdclk_hooks(dev_priv);
-	intel_audio_hooks_init(dev_priv);
-
-	intel_dpll_init_clock_hook(dev_priv);
-
 	if (DISPLAY_VER(dev_priv) >= 9) {
 		dev_priv->display.funcs.display = &skl_display_funcs;
 	} else if (HAS_DDI(dev_priv)) {
@@ -8040,8 +8031,6 @@ void intel_init_display_hooks(struct drm_i915_private *dev_priv)
 	} else {
 		dev_priv->display.funcs.display = &i9xx_display_funcs;
 	}
-
-	intel_fdi_init_hook(dev_priv);
 }
 
 int intel_initial_commit(struct drm_device *dev)

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

@@ -32,6 +32,7 @@
 #include "intel_display_types.h"
 #include "intel_dmc.h"
 #include "intel_dp.h"
+#include "intel_dpll.h"
 #include "intel_dpll_mgr.h"
 #include "intel_fb.h"
 #include "intel_fbc.h"
@@ -169,6 +170,19 @@ static void intel_plane_possible_crtcs_init(struct drm_i915_private *dev_priv)
 	}
 }
 
+void intel_display_driver_early_probe(struct drm_i915_private *i915)
+{
+	if (!HAS_DISPLAY(i915))
+		return;
+
+	intel_color_init_hooks(i915);
+	intel_init_cdclk_hooks(i915);
+	intel_audio_hooks_init(i915);
+	intel_dpll_init_clock_hook(i915);
+	intel_init_display_hooks(i915);
+	intel_fdi_init_hook(i915);
+}
+
 /* part #1: call before irq install */
 int intel_display_driver_probe_noirq(struct drm_i915_private *i915)
 {

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

@@ -15,6 +15,7 @@ struct pci_dev;
 
 bool intel_display_driver_probe_defer(struct pci_dev *pdev);
 void intel_display_driver_init_hw(struct drm_i915_private *i915);
+void intel_display_driver_early_probe(struct drm_i915_private *i915);
 int intel_display_driver_probe_noirq(struct drm_i915_private *i915);
 int intel_display_driver_probe_nogem(struct drm_i915_private *i915);
 int intel_display_driver_probe(struct drm_i915_private *i915);

drivers/gpu/drm/i915/i915_driver.c

@@ -252,7 +252,7 @@ static int i915_driver_early_probe(struct drm_i915_private *dev_priv)
 	intel_detect_pch(dev_priv);
 
 	intel_irq_init(dev_priv);
-	intel_init_display_hooks(dev_priv);
+	intel_display_driver_early_probe(dev_priv);
 	intel_clock_gating_hooks_init(dev_priv);
 
 	intel_detect_preproduction_hw(dev_priv);