1 files changed, 83 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_encoder.c b/drivers/gpu/drm/i915/display/intel_encoder.c
new file mode 100644
index 000000000000..21d638535497
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_encoder.c
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2024 Intel Corporation
+ */
+
+#include <linux/workqueue.h>
+
+#include "i915_drv.h"
+
+#include "intel_display_types.h"
+#include "intel_encoder.h"
+
+static void intel_encoder_link_check_work_fn(struct work_struct *work)
+{
+	struct intel_encoder *encoder =
+		container_of(work, typeof(*encoder), link_check_work.work);
+
+	encoder->link_check(encoder);
+}
+
+void intel_encoder_link_check_init(struct intel_encoder *encoder,
+				   void (*callback)(struct intel_encoder *encoder))
+{
+	INIT_DELAYED_WORK(&encoder->link_check_work, intel_encoder_link_check_work_fn);
+	encoder->link_check = callback;
+}
+
+void intel_encoder_link_check_flush_work(struct intel_encoder *encoder)
+{
+	cancel_delayed_work_sync(&encoder->link_check_work);
+}
+
+void intel_encoder_link_check_queue_work(struct intel_encoder *encoder, int delay_ms)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+
+	mod_delayed_work(i915->unordered_wq,
+			 &encoder->link_check_work, msecs_to_jiffies(delay_ms));
+}
+
+void intel_encoder_suspend_all(struct intel_display *display)
+{
+	struct intel_encoder *encoder;
+
+	if (!HAS_DISPLAY(display))
+		return;
+
+	/*
+	 * TODO: check and remove holding the modeset locks if none of
+	 * the encoders depends on this.
+	 */
+	drm_modeset_lock_all(display->drm);
+	for_each_intel_encoder(display->drm, encoder)
+		if (encoder->suspend)
+			encoder->suspend(encoder);
+	drm_modeset_unlock_all(display->drm);
+
+	for_each_intel_encoder(display->drm, encoder)
+		if (encoder->suspend_complete)
+			encoder->suspend_complete(encoder);
+}
+
+void intel_encoder_shutdown_all(struct intel_display *display)
+{
+	struct intel_encoder *encoder;
+
+	if (!HAS_DISPLAY(display))
+		return;
+
+	/*
+	 * TODO: check and remove holding the modeset locks if none of
+	 * the encoders depends on this.
+	 */
+	drm_modeset_lock_all(display->drm);
+	for_each_intel_encoder(display->drm, encoder)
+		if (encoder->shutdown)
+			encoder->shutdown(encoder);
+	drm_modeset_unlock_all(display->drm);
+
+	for_each_intel_encoder(display->drm, encoder)
+		if (encoder->shutdown_complete)
+			encoder->shutdown_complete(encoder);
+}