1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_display_pc8.c b/drivers/gpu/drm/i915/i915_display_pc8.c
new file mode 100644
index 000000000000..2af5dbab20ef
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_display_pc8.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright 2025, Intel Corporation.
+ */
+
+#include <drm/drm_print.h>
+#include <drm/intel/display_parent_interface.h>
+
+#include "i915_display_pc8.h"
+#include "i915_drv.h"
+#include "intel_uncore.h"
+
+static void i915_display_pc8_block(struct drm_device *drm)
+{
+	struct intel_uncore *uncore = &to_i915(drm)->uncore;
+
+	/* to prevent PC8 state, just enable force_wake */
+	intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
+}
+
+static void i915_display_pc8_unblock(struct drm_device *drm)
+{
+	struct intel_uncore *uncore = &to_i915(drm)->uncore;
+
+	intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
+}
+
+const struct intel_display_pc8_interface i915_display_pc8_interface = {
+	.block = i915_display_pc8_block,
+	.unblock = i915_display_pc8_unblock,
+};