drm/i915/debugfs: switch crtc debugfs to struct intel_crtc

Convert the crtc debugfs code to use struct intel_crtc instead of struct
drm_crtc.

v2: Fix build for CONFIG_DRM_I915_DEBUG_VBLANK_EVADE=y (kernel test robot)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320124429.786985-1-jani.nikula@intel.com

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

@@ -212,7 +212,7 @@ static void intel_crtc_destroy(struct drm_crtc *_crtc)
 
 static int intel_crtc_late_register(struct drm_crtc *crtc)
 {
-	intel_crtc_debugfs_add(crtc);
+	intel_crtc_debugfs_add(to_intel_crtc(crtc));
 	return 0;
 }
 

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

@@ -542,10 +542,10 @@ static const struct file_operations crtc_updates_fops = {
 	.write = crtc_updates_write
 };
 
-static void crtc_updates_add(struct drm_crtc *crtc)
+static void crtc_updates_add(struct intel_crtc *crtc)
 {
-	debugfs_create_file("i915_update_info", 0644, crtc->debugfs_entry,
-			    to_intel_crtc(crtc), &crtc_updates_fops);
+	debugfs_create_file("i915_update_info", 0644, crtc->base.debugfs_entry,
+			    crtc, &crtc_updates_fops);
 }
 
 #else
@@ -555,7 +555,7 @@ static void crtc_updates_info(struct seq_file *m,
 {
 }
 
-static void crtc_updates_add(struct drm_crtc *crtc)
+static void crtc_updates_add(struct intel_crtc *crtc)
 {
 }
 #endif
@@ -1366,7 +1366,7 @@ static const struct file_operations i915_dsc_bpc_fops = {
  */
 static int i915_current_bpc_show(struct seq_file *m, void *data)
 {
-	struct intel_crtc *crtc = to_intel_crtc(m->private);
+	struct intel_crtc *crtc = m->private;
 	struct intel_crtc_state *crtc_state;
 	int ret;
 
@@ -1440,15 +1440,17 @@ void intel_connector_debugfs_add(struct intel_connector *intel_connector)
  *
  * Failure to add debugfs entries should generally be ignored.
  */
-void intel_crtc_debugfs_add(struct drm_crtc *crtc)
+void intel_crtc_debugfs_add(struct intel_crtc *crtc)
 {
-	if (!crtc->debugfs_entry)
+	struct dentry *root = crtc->base.debugfs_entry;
+
+	if (!root)
 		return;
 
 	crtc_updates_add(crtc);
-	intel_drrs_crtc_debugfs_add(to_intel_crtc(crtc));
-	intel_fbc_crtc_debugfs_add(to_intel_crtc(crtc));
+	intel_drrs_crtc_debugfs_add(crtc);
+	intel_fbc_crtc_debugfs_add(crtc);
 
-	debugfs_create_file("i915_current_bpc", 0444, crtc->debugfs_entry, crtc,
+	debugfs_create_file("i915_current_bpc", 0444, root, crtc,
 			    &i915_current_bpc_fops);
 }

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

@@ -6,18 +6,18 @@
 #ifndef __INTEL_DISPLAY_DEBUGFS_H__
 #define __INTEL_DISPLAY_DEBUGFS_H__
 
-struct drm_crtc;
 struct drm_i915_private;
 struct intel_connector;
+struct intel_crtc;
 
 #ifdef CONFIG_DEBUG_FS
 void intel_display_debugfs_register(struct drm_i915_private *i915);
 void intel_connector_debugfs_add(struct intel_connector *connector);
-void intel_crtc_debugfs_add(struct drm_crtc *crtc);
+void intel_crtc_debugfs_add(struct intel_crtc *crtc);
 #else
 static inline void intel_display_debugfs_register(struct drm_i915_private *i915) {}
 static inline void intel_connector_debugfs_add(struct intel_connector *connector) {}
-static inline void intel_crtc_debugfs_add(struct drm_crtc *crtc) {}
+static inline void intel_crtc_debugfs_add(struct intel_crtc *crtc) {}
 #endif
 
 #endif /* __INTEL_DISPLAY_DEBUGFS_H__ */