v4.19.13 snapshot.
diff --git a/drivers/crypto/ccree/cc_pm.c b/drivers/crypto/ccree/cc_pm.c
new file mode 100644
index 0000000..d990f47
--- /dev/null
+++ b/drivers/crypto/ccree/cc_pm.c
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
+
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
+#include "cc_driver.h"
+#include "cc_buffer_mgr.h"
+#include "cc_request_mgr.h"
+#include "cc_sram_mgr.h"
+#include "cc_ivgen.h"
+#include "cc_hash.h"
+#include "cc_pm.h"
+
+#define POWER_DOWN_ENABLE 0x01
+#define POWER_DOWN_DISABLE 0x00
+
+const struct dev_pm_ops ccree_pm = {
+ SET_RUNTIME_PM_OPS(cc_pm_suspend, cc_pm_resume, NULL)
+};
+
+int cc_pm_suspend(struct device *dev)
+{
+ struct cc_drvdata *drvdata = dev_get_drvdata(dev);
+ int rc;
+
+ dev_dbg(dev, "set HOST_POWER_DOWN_EN\n");
+ cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_ENABLE);
+ rc = cc_suspend_req_queue(drvdata);
+ if (rc) {
+ dev_err(dev, "cc_suspend_req_queue (%x)\n", rc);
+ return rc;
+ }
+ fini_cc_regs(drvdata);
+ cc_clk_off(drvdata);
+ return 0;
+}
+
+int cc_pm_resume(struct device *dev)
+{
+ int rc;
+ struct cc_drvdata *drvdata = dev_get_drvdata(dev);
+
+ dev_dbg(dev, "unset HOST_POWER_DOWN_EN\n");
+ cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_DISABLE);
+
+ rc = cc_clk_on(drvdata);
+ if (rc) {
+ dev_err(dev, "failed getting clock back on. We're toast.\n");
+ return rc;
+ }
+
+ rc = init_cc_regs(drvdata, false);
+ if (rc) {
+ dev_err(dev, "init_cc_regs (%x)\n", rc);
+ return rc;
+ }
+
+ rc = cc_resume_req_queue(drvdata);
+ if (rc) {
+ dev_err(dev, "cc_resume_req_queue (%x)\n", rc);
+ return rc;
+ }
+
+ /* must be after the queue resuming as it uses the HW queue*/
+ cc_init_hash_sram(drvdata);
+
+ cc_init_iv_sram(drvdata);
+ return 0;
+}
+
+int cc_pm_get(struct device *dev)
+{
+ int rc = 0;
+ struct cc_drvdata *drvdata = dev_get_drvdata(dev);
+
+ if (cc_req_queue_suspended(drvdata))
+ rc = pm_runtime_get_sync(dev);
+ else
+ pm_runtime_get_noresume(dev);
+
+ return rc;
+}
+
+int cc_pm_put_suspend(struct device *dev)
+{
+ int rc = 0;
+ struct cc_drvdata *drvdata = dev_get_drvdata(dev);
+
+ if (!cc_req_queue_suspended(drvdata)) {
+ pm_runtime_mark_last_busy(dev);
+ rc = pm_runtime_put_autosuspend(dev);
+ } else {
+ /* Something wrong happens*/
+ dev_err(dev, "request to suspend already suspended queue");
+ rc = -EBUSY;
+ }
+ return rc;
+}
+
+int cc_pm_init(struct cc_drvdata *drvdata)
+{
+ int rc = 0;
+ struct device *dev = drvdata_to_dev(drvdata);
+
+ /* must be before the enabling to avoid resdundent suspending */
+ pm_runtime_set_autosuspend_delay(dev, CC_SUSPEND_TIMEOUT);
+ pm_runtime_use_autosuspend(dev);
+ /* activate the PM module */
+ rc = pm_runtime_set_active(dev);
+ if (rc)
+ return rc;
+ /* enable the PM module*/
+ pm_runtime_enable(dev);
+
+ return rc;
+}
+
+void cc_pm_fini(struct cc_drvdata *drvdata)
+{
+ pm_runtime_disable(drvdata_to_dev(drvdata));
+}