1 files changed, 94 insertions, 0 deletions
diff --git a/drivers/accel/amdxdna/amdxdna_pm.c b/drivers/accel/amdxdna/amdxdna_pm.c
new file mode 100644
index 000000000000..fa38e65d617c
--- /dev/null
+++ b/drivers/accel/amdxdna/amdxdna_pm.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025, Advanced Micro Devices, Inc.
+ */
+
+#include <drm/amdxdna_accel.h>
+#include <drm/drm_drv.h>
+#include <linux/pm_runtime.h>
+
+#include "amdxdna_pm.h"
+
+#define AMDXDNA_AUTOSUSPEND_DELAY	5000 /* milliseconds */
+
+int amdxdna_pm_suspend(struct device *dev)
+{
+	struct amdxdna_dev *xdna = to_xdna_dev(dev_get_drvdata(dev));
+	int ret = -EOPNOTSUPP;
+	bool rpm;
+
+	if (xdna->dev_info->ops->suspend) {
+		rpm = xdna->rpm_on;
+		xdna->rpm_on = false;
+		ret = xdna->dev_info->ops->suspend(xdna);
+		xdna->rpm_on = rpm;
+	}
+
+	XDNA_DBG(xdna, "Suspend done ret %d", ret);
+	return ret;
+}
+
+int amdxdna_pm_resume(struct device *dev)
+{
+	struct amdxdna_dev *xdna = to_xdna_dev(dev_get_drvdata(dev));
+	int ret = -EOPNOTSUPP;
+	bool rpm;
+
+	if (xdna->dev_info->ops->resume) {
+		rpm = xdna->rpm_on;
+		xdna->rpm_on = false;
+		ret = xdna->dev_info->ops->resume(xdna);
+		xdna->rpm_on = rpm;
+	}
+
+	XDNA_DBG(xdna, "Resume done ret %d", ret);
+	return ret;
+}
+
+int amdxdna_pm_resume_get(struct amdxdna_dev *xdna)
+{
+	struct device *dev = xdna->ddev.dev;
+	int ret;
+
+	if (!xdna->rpm_on)
+		return 0;
+
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret) {
+		XDNA_ERR(xdna, "Resume failed: %d", ret);
+		pm_runtime_set_suspended(dev);
+	}
+
+	return ret;
+}
+
+void amdxdna_pm_suspend_put(struct amdxdna_dev *xdna)
+{
+	struct device *dev = xdna->ddev.dev;
+
+	if (!xdna->rpm_on)
+		return;
+
+	pm_runtime_put_autosuspend(dev);
+}
+
+void amdxdna_pm_init(struct amdxdna_dev *xdna)
+{
+	struct device *dev = xdna->ddev.dev;
+
+	pm_runtime_set_active(dev);
+	pm_runtime_set_autosuspend_delay(dev, AMDXDNA_AUTOSUSPEND_DELAY);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_allow(dev);
+	pm_runtime_put_autosuspend(dev);
+	xdna->rpm_on = true;
+}
+
+void amdxdna_pm_fini(struct amdxdna_dev *xdna)
+{
+	struct device *dev = xdna->ddev.dev;
+
+	xdna->rpm_on = false;
+	pm_runtime_get_noresume(dev);
+	pm_runtime_forbid(dev);
+}