drm/i915: Move DRRS debugfs next to the implementation

Move the DRRS debugfs stuff next to the actual implementation
so that it's easier to deal with the whole.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221003113249.16213-2-ville.syrjala@linux.intel.com

1 files changed, 106 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_drrs.c b/drivers/gpu/drm/i915/display/intel_drrs.c
index 7da4a9cbe4ba..030a3566538a 100644
--- a/drivers/gpu/drm/i915/display/intel_drrs.c
+++ b/drivers/gpu/drm/i915/display/intel_drrs.c
@@ -297,3 +297,109 @@ void intel_crtc_drrs_init(struct intel_crtc *crtc)
 	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 drm_i915_private *i915 = m->private;
+	struct drm_connector_list_iter conn_iter;
+	struct intel_connector *connector;
+	struct intel_crtc *crtc;
+
+	drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		seq_printf(m, "[CONNECTOR:%d:%s] DRRS type: %s\n",
+			   connector->base.base.id, connector->base.name,
+			   intel_drrs_type_str(intel_panel_drrs_type(connector)));
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	seq_puts(m, "\n");
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		seq_printf(m, "[CRTC:%d:%s]:\n",
+			   crtc->base.base.id, crtc->base.name);
+
+		mutex_lock(&crtc->drrs.mutex);
+
+		/* DRRS Supported */
+		seq_printf(m, "\tDRRS Enabled: %s\n",
+			   str_yes_no(crtc_state->has_drrs));
+
+		seq_printf(m, "\tDRRS Active: %s\n",
+			   str_yes_no(intel_drrs_is_active(crtc)));
+
+		seq_printf(m, "\tBusy_frontbuffer_bits: 0x%X\n",
+			   crtc->drrs.busy_frontbuffer_bits);
+
+		seq_printf(m, "\tDRRS refresh rate: %s\n",
+			   crtc->drrs.refresh_rate == DRRS_REFRESH_RATE_LOW ?
+			   "low" : "high");
+
+		mutex_unlock(&crtc->drrs.mutex);
+	}
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(intel_drrs_debugfs_status);
+
+static int intel_drrs_debugfs_ctl_set(void *data, u64 val)
+{
+	struct drm_i915_private *i915 = data;
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		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);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(intel_drrs_debugfs_ctl_fops,
+			NULL, intel_drrs_debugfs_ctl_set, "%llu\n");
+
+void intel_drrs_debugfs_register(struct drm_i915_private *i915)
+{
+	struct drm_minor *minor = i915->drm.primary;
+
+	debugfs_create_file("i915_drrs_status", 0444, minor->debugfs_root,
+			    i915, &intel_drrs_debugfs_status_fops);
+
+	debugfs_create_file("i915_drrs_ctl", 0644, minor->debugfs_root,
+			    i915, &intel_drrs_debugfs_ctl_fops);
+}