1 files changed, 110 insertions, 2 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_drrs.c b/drivers/gpu/drm/i915/display/intel_drrs.c
index 7da4a9cbe4ba..e27408efaae2 100644
--- a/drivers/gpu/drm/i915/display/intel_drrs.c
+++ b/drivers/gpu/drm/i915/display/intel_drrs.c
@@ -284,16 +284,124 @@ void intel_drrs_flush(struct drm_i915_private *dev_priv,
 }
 
 /**
- * intel_crtc_drrs_init - Init DRRS for CRTC
+ * intel_drrs_crtc_init - Init DRRS for CRTC
  * @crtc: crtc
  *
  * This function is called only once at driver load to initialize basic
  * DRRS stuff.
  *
  */
-void intel_crtc_drrs_init(struct intel_crtc *crtc)
+void intel_drrs_crtc_init(struct intel_crtc *crtc)
 {
 	INIT_DELAYED_WORK(&crtc->drrs.work, intel_drrs_downclock_work);
 	mutex_init(&crtc->drrs.mutex);
 	crtc->drrs.cpu_transcoder = INVALID_TRANSCODER;
 }
+
+static int intel_drrs_debugfs_status_show(struct seq_file *m, void *unused)
+{
+	struct intel_crtc *crtc = m->private;
+	const struct intel_crtc_state *crtc_state;
+	int ret;
+
+	ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex);
+	if (ret)
+		return ret;
+
+	crtc_state = to_intel_crtc_state(crtc->base.state);
+
+	mutex_lock(&crtc->drrs.mutex);
+
+	seq_printf(m, "DRRS enabled: %s\n",
+		   str_yes_no(crtc_state->has_drrs));
+
+	seq_printf(m, "DRRS active: %s\n",
+		   str_yes_no(intel_drrs_is_active(crtc)));
+
+	seq_printf(m, "DRRS refresh rate: %s\n",
+		   crtc->drrs.refresh_rate == DRRS_REFRESH_RATE_LOW ?
+		   "low" : "high");
+
+	seq_printf(m, "DRRS busy frontbuffer bits: 0x%x\n",
+		   crtc->drrs.busy_frontbuffer_bits);
+
+	mutex_unlock(&crtc->drrs.mutex);
+
+	drm_modeset_unlock(&crtc->base.mutex);
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(intel_drrs_debugfs_status);
+
+static int intel_drrs_debugfs_ctl_set(void *data, u64 val)
+{
+	struct intel_crtc *crtc = data;
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state;
+	struct drm_crtc_commit *commit;
+	int ret;
+
+	ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex);
+	if (ret)
+		return ret;
+
+	crtc_state = to_intel_crtc_state(crtc->base.state);
+
+	if (!crtc_state->hw.active ||
+	    !crtc_state->has_drrs)
+		goto out;
+
+	commit = crtc_state->uapi.commit;
+	if (commit) {
+		ret = wait_for_completion_interruptible(&commit->hw_done);
+		if (ret)
+			goto out;
+	}
+
+	drm_dbg(&i915->drm,
+		"Manually %sactivating DRRS\n", val ? "" : "de");
+
+	if (val)
+		intel_drrs_activate(crtc_state);
+	else
+		intel_drrs_deactivate(crtc_state);
+
+out:
+	drm_modeset_unlock(&crtc->base.mutex);
+
+	return ret;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(intel_drrs_debugfs_ctl_fops,
+			NULL, intel_drrs_debugfs_ctl_set, "%llu\n");
+
+void intel_drrs_crtc_debugfs_add(struct intel_crtc *crtc)
+{
+	debugfs_create_file("i915_drrs_status", 0444, crtc->base.debugfs_entry,
+			    crtc, &intel_drrs_debugfs_status_fops);
+
+	debugfs_create_file("i915_drrs_ctl", 0644, crtc->base.debugfs_entry,
+			    crtc, &intel_drrs_debugfs_ctl_fops);
+}
+
+static int intel_drrs_debugfs_type_show(struct seq_file *m, void *unused)
+{
+	struct intel_connector *connector = m->private;
+
+	seq_printf(m, "DRRS type: %s\n",
+		   intel_drrs_type_str(intel_panel_drrs_type(connector)));
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(intel_drrs_debugfs_type);
+
+void intel_drrs_connector_debugfs_add(struct intel_connector *connector)
+{
+	if (intel_panel_drrs_type(connector) == DRRS_TYPE_NONE)
+		return;
+
+	debugfs_create_file("i915_drrs_type", 0444, connector->base.debugfs_entry,
+			    connector, &intel_drrs_debugfs_type_fops);
+}